diff options
259 files changed, 8698 insertions, 2634 deletions
diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt index ff86fdc..cdd7b48 100644 --- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt +++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt @@ -169,4 +169,5 @@ ti,tsc2003 I2C Touch-Screen Controller ti,tmp102 Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface ti,tmp103 Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface ti,tmp275 Digital Temperature Sensor +winbond,w83793 Winbond/Nuvoton H/W Monitor winbond,wpct301 i2c trusted platform module (TPM) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index c7f120a..3da87e1 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -80,6 +80,7 @@ config ARCH_HAS_DMA_SET_COHERENT_MASK config PPC bool default y + select BUILDTIME_EXTABLE_SORT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select BINFMT_ELF @@ -163,6 +164,7 @@ config PPC select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE select HAVE_ARCH_HARDENED_USERCOPY select HAVE_KERNEL_GZIP + select HAVE_CC_STACKPROTECTOR config GENERIC_CSUM def_bool CPU_LITTLE_ENDIAN @@ -396,6 +398,14 @@ config MPROFILE_KERNEL depends on PPC64 && CPU_LITTLE_ENDIAN def_bool !DISABLE_MPROFILE_KERNEL +config USE_THIN_ARCHIVES + bool "Build the kernel using thin archives" + default n + select THIN_ARCHIVES + help + Build the kernel using thin archives. + If you're unsure say N. + config IOMMU_HELPER def_bool PPC64 @@ -456,6 +466,19 @@ config KEXEC interface is strongly in flux, so no good recommendation can be made. +config KEXEC_FILE + bool "kexec file based system call" + select KEXEC_CORE + select BUILD_BIN2C + depends on PPC64 + depends on CRYPTO=y + depends on CRYPTO_SHA256=y + help + This is a new version of the kexec system call. This call is + file based and takes in file descriptors as system call arguments + for kernel and initramfs as opposed to a list of segments as is the + case for the older kexec call. + config RELOCATABLE bool "Build a relocatable kernel" depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE)) @@ -479,6 +502,15 @@ config RELOCATABLE setting can still be useful to bootwrappers that need to know the load address of the kernel (eg. u-boot/mkimage). +config RELOCATABLE_TEST + bool "Test relocatable kernel" + depends on (PPC64 && RELOCATABLE) + default n + help + This runs the relocatable kernel at the address it was initially + loaded at, which tends to be non-zero and therefore test the + relocation code. + config CRASH_DUMP bool "Build a kdump crash kernel" depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) @@ -490,7 +522,7 @@ config CRASH_DUMP config FA_DUMP bool "Firmware-assisted dump" - depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC + depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC_CORE help A robust mechanism to get reliable kernel crash dump with assistance from firmware. This approach does not use kexec, @@ -549,6 +581,13 @@ config ARCH_SPARSEMEM_DEFAULT config SYS_SUPPORTS_HUGETLBFS bool +config ILLEGAL_POINTER_VALUE + hex + # This is roughly half way between the top of user space and the bottom + # of kernel space, which seems about as good as we can get. + default 0x5deadbeef0000000 if PPC64 + default 0 + source "mm/Kconfig" config ARCH_MEMORY_PROBE diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 63292f6..949258d 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -354,4 +354,20 @@ config FAIL_IOMMU If you are unsure, say N. +config PPC_PTDUMP + bool "Export kernel pagetable layout to userspace via debugfs" + depends on DEBUG_KERNEL + select DEBUG_FS + help + This option exports the state of the kernel pagetables to a + debugfs file. This is only useful for kernel developers who are + working in architecture specific areas of the kernel - probably + not a good idea to enable this feature in a production kernel. + + If you are unsure, say N. + +config PPC_HTDUMP + def_bool y + depends on PPC_PTDUMP && PPC_BOOK3S + endmenu diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 617dece..31286fa 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -23,7 +23,7 @@ CROSS32AR := $(CROSS32_COMPILE)ar ifeq ($(HAS_BIARCH),y) ifeq ($(CROSS32_COMPILE),) CROSS32CC := $(CC) -m32 -CROSS32AR := GNUTARGET=elf32-powerpc $(AR) +KBUILD_ARFLAGS += --target=elf32-powerpc endif endif @@ -85,7 +85,7 @@ ifeq ($(HAS_BIARCH),y) override AS += -a$(BITS) override LD += -m elf$(BITS)$(LDEMULATION) override CC += -m$(BITS) -override AR := GNUTARGET=elf$(BITS)-$(GNUTARGET) $(AR) +KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET) endif LDFLAGS_vmlinux-y := -Bstatic @@ -121,6 +121,7 @@ CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) ifeq ($(CONFIG_PPC_BOOK3S_64),y) CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) +CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power4 else CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 endif @@ -249,6 +250,7 @@ core-y += arch/powerpc/kernel/ \ core-$(CONFIG_XMON) += arch/powerpc/xmon/ core-$(CONFIG_KVM) += arch/powerpc/kvm/ core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ +core-$(CONFIG_KEXEC_FILE) += arch/powerpc/purgatory/ drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ @@ -275,16 +277,16 @@ zImage: relocs_check endif $(BOOT_TARGETS1): vmlinux - $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@) $(BOOT_TARGETS2): vmlinux - $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@) bootwrapper_install: - $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@) %.dtb: scripts - $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@) # Used to create 'merged defconfigs' # To use it $(call) it with the first argument as the base defconfig diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 9d47f2e..e82f333 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -172,10 +172,6 @@ $(addprefix $(obj)/,$(libfdt) $(libfdtheader)): $(obj)/%: $(srctree)/scripts/dtc $(obj)/empty.c: $(Q)touch $@ -$(obj)/zImage.lds: $(obj)/%: $(srctree)/$(src)/%.S - $(CROSS32CC) $(cpp_flags) -E -Wp,-MD,$(depfile) -P -Upowerpc \ - -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< - $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds : $(obj)/%: $(srctree)/$(src)/%.S $(Q)cp $< $@ @@ -357,17 +353,17 @@ $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz # Don't put the ramdisk on the pattern rule; when its missing make will try # the pattern rule with less dependencies that also matches (even with the # hard dependency listed). -$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) +$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) FORCE $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz) -$(addprefix $(obj)/, $(sort $(filter zImage.%, $(image-y)))): vmlinux $(wrapperbits) +$(addprefix $(obj)/, $(sort $(filter zImage.%, $(image-y)))): vmlinux $(wrapperbits) FORCE $(call if_changed,wrap,$(subst $(obj)/zImage.,,$@)) # dtbImage% - a dtbImage is a zImage with an embedded device tree blob -$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(obj)/%.dtb +$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(obj)/%.dtb FORCE $(call if_changed,wrap,$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) -$(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/%.dtb +$(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/%.dtb FORCE $(call if_changed,wrap,$*,,$(obj)/$*.dtb) # This cannot be in the root of $(src) as the zImage rule always adds a $(obj) @@ -375,31 +371,31 @@ $(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/%.dtb $(obj)/vmlinux.strip: vmlinux $(STRIP) -s -R .comment $< -o $@ -$(obj)/uImage: vmlinux $(wrapperbits) +$(obj)/uImage: vmlinux $(wrapperbits) FORCE $(call if_changed,wrap,uboot) -$(obj)/uImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/uImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,uboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) -$(obj)/uImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/uImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,uboot-$*,,$(obj)/$*.dtb) -$(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) -$(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb) -$(obj)/simpleImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/simpleImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) -$(obj)/simpleImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/simpleImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb) -$(obj)/treeImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/treeImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) -$(obj)/treeImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) +$(obj)/treeImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE $(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb) # Rule to build device tree blobs diff --git a/arch/powerpc/boot/dts/fsl/t1023rdb.dts b/arch/powerpc/boot/dts/fsl/t1023rdb.dts index 2975762..5ba6fbf 100644 --- a/arch/powerpc/boot/dts/fsl/t1023rdb.dts +++ b/arch/powerpc/boot/dts/fsl/t1023rdb.dts @@ -41,6 +41,27 @@ #size-cells = <2>; interrupt-parent = <&mpic>; + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + bman_fbpr: bman-fbpr { + size = <0 0x1000000>; + alignment = <0 0x1000000>; + }; + + qman_fqd: qman-fqd { + size = <0 0x400000>; + alignment = <0 0x400000>; + }; + + qman_pfdr: qman-pfdr { + size = <0 0x2000000>; + alignment = <0 0x2000000>; + }; + }; + ifc: localbus@ffe124000 { reg = <0xf 0xfe124000 0 0x2000>; ranges = <0 0 0xf 0xe8000000 0x08000000 @@ -72,6 +93,14 @@ ranges = <0x00000000 0xf 0x00000000 0x01072000>; }; + bportals: bman-portals@ff4000000 { + ranges = <0x0 0xf 0xf4000000 0x2000000>; + }; + + qportals: qman-portals@ff6000000 { + ranges = <0x0 0xf 0xf6000000 0x2000000>; + }; + soc: soc@ffe000000 { ranges = <0x00000000 0xf 0xfe000000 0x1000000>; reg = <0xf 0xfe000000 0 0x00001000>; diff --git a/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi b/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi index 6e0b489..da2894c 100644 --- a/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi @@ -34,6 +34,21 @@ #include <dt-bindings/thermal/thermal.h> +&bman_fbpr { + compatible = "fsl,bman-fbpr"; + alloc-ranges = <0 0 0x10000 0>; +}; + +&qman_fqd { + compatible = "fsl,qman-fqd"; + alloc-ranges = <0 0 0x10000 0>; +}; + +&qman_pfdr { + compatible = "fsl,qman-pfdr"; + alloc-ranges = <0 0 0x10000 0>; +}; + &ifc { #address-cells = <2>; #size-cells = <1>; @@ -180,6 +195,92 @@ }; }; +&bportals { + #address-cells = <0x1>; + #size-cells = <0x1>; + compatible = "simple-bus"; + + bman-portal@0 { + cell-index = <0x0>; + compatible = "fsl,bman-portal"; + reg = <0x0 0x4000>, <0x1000000 0x1000>; + interrupts = <105 2 0 0>; + }; + bman-portal@4000 { + cell-index = <0x1>; + compatible = "fsl,bman-portal"; + reg = <0x4000 0x4000>, <0x1001000 0x1000>; + interrupts = <107 2 0 0>; + }; + bman-portal@8000 { + cell-index = <2>; + compatible = "fsl,bman-portal"; + reg = <0x8000 0x4000>, <0x1002000 0x1000>; + interrupts = <109 2 0 0>; + }; + bman-portal@c000 { + cell-index = <0x3>; + compatible = "fsl,bman-portal"; + reg = <0xc000 0x4000>, <0x1003000 0x1000>; + interrupts = <111 2 0 0>; + }; + bman-portal@10000 { + cell-index = <0x4>; + compatible = "fsl,bman-portal"; + reg = <0x10000 0x4000>, <0x1004000 0x1000>; + interrupts = <113 2 0 0>; + }; + bman-portal@14000 { + cell-index = <0x5>; + compatible = "fsl,bman-portal"; + reg = <0x14000 0x4000>, <0x1005000 0x1000>; + interrupts = <115 2 0 0>; + }; +}; + +&qportals { + #address-cells = <0x1>; + #size-cells = <0x1>; + compatible = "simple-bus"; + + qportal0: qman-portal@0 { + compatible = "fsl,qman-portal"; + reg = <0x0 0x4000>, <0x1000000 0x1000>; + interrupts = <104 0x2 0 0>; + cell-index = <0x0>; + }; + qportal1: qman-portal@4000 { + compatible = "fsl,qman-portal"; + reg = <0x4000 0x4000>, <0x1001000 0x1000>; + interrupts = <106 0x2 0 0>; + cell-index = <0x1>; + }; + qportal2: qman-portal@8000 { + compatible = "fsl,qman-portal"; + reg = <0x8000 0x4000>, <0x1002000 0x1000>; + interrupts = <108 0x2 0 0>; + cell-index = <0x2>; + }; + qportal3: qman-portal@c000 { + compatible = "fsl,qman-portal"; + reg = <0xc000 0x4000>, <0x1003000 0x1000>; + interrupts = <110 0x2 0 0>; + cell-index = <0x3>; + }; + qportal4: qman-portal@10000 { + compatible = "fsl,qman-portal"; + reg = <0x10000 0x4000>, <0x1004000 0x1000>; + interrupts = <112 0x2 0 0>; + cell-index = <0x4>; + }; + qportal5: qman-portal@14000 { + compatible = "fsl,qman-portal"; + reg = <0x14000 0x4000>, <0x1005000 0x1000>; + interrupts = <114 0x2 0 0>; + cell-index = <0x5>; + }; +}; + &soc { #address-cells = <1>; #size-cells = <1>; @@ -413,6 +514,8 @@ }; /include/ "qoriq-sec5.0-0.dtsi" +/include/ "qoriq-qman3.dtsi" +/include/ "qoriq-bman1.dtsi" /include/ "qoriq-fman3l-0.dtsi" /include/ "qoriq-fman3-0-10g-0-best-effort.dtsi" diff --git a/arch/powerpc/boot/dts/fsl/t1024qds.dts b/arch/powerpc/boot/dts/fsl/t1024qds.dts index 772143d..d6858b7 100644 --- a/arch/powerpc/boot/dts/fsl/t1024qds.dts +++ b/arch/powerpc/boot/dts/fsl/t1024qds.dts @@ -41,6 +41,27 @@ #size-cells = <2>; interrupt-parent = <&mpic>; + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + bman_fbpr: bman-fbpr { + size = <0 0x1000000>; + alignment = <0 0x1000000>; + }; + + qman_fqd: qman-fqd { + size = <0 0x400000>; + alignment = <0 0x400000>; + }; + + qman_pfdr: qman-pfdr { + size = <0 0x2000000>; + alignment = <0 0x2000000>; + }; + }; + ifc: localbus@ffe124000 { reg = <0xf 0xfe124000 0 0x2000>; ranges = <0 0 0xf 0xe8000000 0x08000000 @@ -80,6 +101,14 @@ ranges = <0x00000000 0xf 0x00000000 0x01072000>; }; + bportals: bman-portals@ff4000000 { + ranges = <0x0 0xf 0xf4000000 0x2000000>; + }; + + qportals: qman-portals@ff6000000 { + ranges = <0x0 0xf 0xf6000000 0x2000000>; + }; + soc: soc@ffe000000 { ranges = <0x00000000 0xf 0xfe000000 0x1000000>; reg = <0xf 0xfe000000 0 0x00001000>; diff --git a/arch/powerpc/boot/dts/fsl/t1024rdb.dts b/arch/powerpc/boot/dts/fsl/t1024rdb.dts index 302cdd2..73a6453 100644 --- a/arch/powerpc/boot/dts/fsl/t1024rdb.dts +++ b/arch/powerpc/boot/dts/fsl/t1024rdb.dts @@ -41,6 +41,31 @@ #size-cells = <2>; interrupt-parent = <&mpic>; + aliases { + sg_2500_aqr105_phy4 = &sg_2500_aqr105_phy4; + }; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + bman_fbpr: bman-fbpr { + size = <0 0x1000000>; + alignment = <0 0x1000000>; + }; + + qman_fqd: qman-fqd { + size = <0 0x400000>; + alignment = <0 0x400000>; + }; + + qman_pfdr: qman-pfdr { + size = <0 0x2000000>; + alignment = <0 0x2000000>; + }; + }; + ifc: localbus@ffe124000 { reg = <0xf 0xfe124000 0 0x2000>; ranges = <0 0 0xf 0xe8000000 0x08000000 @@ -82,6 +107,14 @@ ranges = <0x00000000 0xf 0x00000000 0x01072000>; }; + bportals: bman-portals@ff4000000 { + ranges = <0x0 0xf 0xf4000000 0x2000000>; + }; + + qportals: qman-portals@ff6000000 { + ranges = <0x0 0xf 0xf6000000 0x2000000>; + }; + soc: soc@ffe000000 { ranges = <0x00000000 0xf 0xfe000000 0x1000000>; reg = <0xf 0xfe000000 0 0x00001000>; diff --git a/arch/powerpc/boot/dts/fsl/t1042d4rdb.dts b/arch/powerpc/boot/dts/fsl/t1042d4rdb.dts index 2a5a90d..fcd2aeb 100644 --- a/arch/powerpc/boot/dts/fsl/t1042d4rdb.dts +++ b/arch/powerpc/boot/dts/fsl/t1042d4rdb.dts @@ -48,6 +48,58 @@ "fsl,deepsleep-cpld"; }; }; + + soc: soc@ffe000000 { + fman0: fman@400000 { + ethernet@e0000 { + phy-handle = <&phy_sgmii_0>; + phy-connection-type = "sgmii"; + }; + + ethernet@e2000 { + phy-handle = <&phy_sgmii_1>; + phy-connection-type = "sgmii"; + }; + + ethernet@e4000 { + phy-handle = <&phy_sgmii_2>; + phy-connection-type = "sgmii"; + }; + + ethernet@e6000 { + phy-handle = <&phy_rgmii_0>; + phy-connection-type = "rgmii"; + }; + + ethernet@e8000 { + phy-handle = <&phy_rgmii_1>; + phy-connection-type = "rgmii"; + }; + + mdio0: mdio@fc000 { + phy_sgmii_0: ethernet-phy@02 { + reg = <0x02>; + }; + + phy_sgmii_1: ethernet-phy@03 { + reg = <0x03>; + }; + + phy_sgmii_2: ethernet-phy@01 { + reg = <0x01>; + }; + + phy_rgmii_0: ethernet-phy@04 { + reg = <0x04>; + }; + + phy_rgmii_1: ethernet-phy@05 { + reg = <0x05>; + }; + }; + }; + }; + }; #include "t1042si-post.dtsi" diff --git a/arch/powerpc/boot/dts/fsl/t4240rdb.dts b/arch/powerpc/boot/dts/fsl/t4240rdb.dts index cc0a264..8166c66 100644 --- a/arch/powerpc/boot/dts/fsl/t4240rdb.dts +++ b/arch/powerpc/boot/dts/fsl/t4240rdb.dts @@ -125,6 +125,10 @@ }; i2c@118000 { + hwmon@2f { + compatible = "winbond,w83793"; + reg = <0x2f>; + }; eeprom@52 { compatible = "at24,24c256"; reg = <0x52>; diff --git a/arch/powerpc/boot/ps3-head.S b/arch/powerpc/boot/ps3-head.S index b6fcbaf..3dc44b0 100644 --- a/arch/powerpc/boot/ps3-head.S +++ b/arch/powerpc/boot/ps3-head.S @@ -57,11 +57,6 @@ __system_reset_overlay: bctr 1: - /* Save the value at addr zero for a null pointer write check later. */ - - li r4, 0 - lwz r3, 0(r4) - /* Primary delays then goes to _zimage_start in wrapper. */ or 31, 31, 31 /* db16cyc */ diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c index 4ec2d86..a05558a 100644 --- a/arch/powerpc/boot/ps3.c +++ b/arch/powerpc/boot/ps3.c @@ -119,13 +119,12 @@ void ps3_copy_vectors(void) flush_cache((void *)0x100, 512); } -void platform_init(unsigned long null_check) +void platform_init(void) { const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */ void *chosen; unsigned long ft_addr; u64 rm_size; - unsigned long val; console_ops.write = ps3_console_write; platform_ops.exit = ps3_exit; @@ -153,11 +152,6 @@ void platform_init(unsigned long null_check) printf(" flat tree at 0x%lx\n\r", ft_addr); - val = *(unsigned long *)0; - - if (val != null_check) - printf("null check failed: %lx != %lx\n\r", val, null_check); - ((kernel_entry_t)0)(ft_addr, 0, NULL); ps3_exit(); diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index 404b3aa..76fe3cc 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -181,6 +181,28 @@ case "$elfformat" in elf32-powerpc) format=elf32ppc ;; esac +ld_version() +{ + # Poached from scripts/ld-version.sh, but we don't want to call that because + # this script (wrapper) is distributed separately from the kernel source. + # Extract linker version number from stdin and turn into single number. + awk '{ + gsub(".*\\)", ""); + gsub(".*version ", ""); + gsub("-.*", ""); + split($1,a, "."); + print a[1]*100000000 + a[2]*1000000 + a[3]*10000; + exit + }' +} + +# Do not include PT_INTERP segment when linking pie. Non-pie linking +# just ignores this option. +LD_VERSION=$(${CROSS}ld --version | ld_version) +LD_NO_DL_MIN_VERSION=$(echo 2.26 | ld_version) +if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VERSION" ] ; then + nodl="--no-dynamic-linker" +fi platformo=$object/"$platform".o lds=$object/zImage.lds @@ -446,7 +468,7 @@ if [ "$platform" != "miboot" ]; then text_start="-Ttext $link_address" fi #link everything - ${CROSS}ld -m $format -T $lds $text_start $pie -o "$ofile" \ + ${CROSS}ld -m $format -T $lds $text_start $pie $nodl -o "$ofile" \ $platformo $tmp $object/wrapper.a rm $tmp fi diff --git a/arch/powerpc/configs/amigaone_defconfig b/arch/powerpc/configs/amigaone_defconfig index 8b83ce8..8d3e3c4 100644 --- a/arch/powerpc/configs/amigaone_defconfig +++ b/arch/powerpc/configs/amigaone_defconfig @@ -45,12 +45,6 @@ CONFIG_PARPORT_PC_FIFO=y CONFIG_BLK_DEV_FD=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -# CONFIG_IDEPCI_PCIBUS_ORDER is not set -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_SIIMAGE=y -CONFIG_BLK_DEV_VIA82CXXX=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y @@ -61,6 +55,10 @@ CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_SYM53C8XX_2=y CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0 # CONFIG_SCSI_SYM53C8XX_MMIO is not set +CONFIG_ATA=y +CONFIG_PATA_SIL680=y +CONFIG_PATA_VIA=y +CONFIG_ATA_GENERIC=y CONFIG_NETDEVICES=y CONFIG_VORTEX=y CONFIG_8139CP=y diff --git a/arch/powerpc/configs/cell_defconfig b/arch/powerpc/configs/cell_defconfig index 7b6f30d..2d7fcbe 100644 --- a/arch/powerpc/configs/cell_defconfig +++ b/arch/powerpc/configs/cell_defconfig @@ -108,16 +108,15 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=131072 -CONFIG_IDE=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_AEC62XX=y -CONFIG_BLK_DEV_SIIMAGE=y CONFIG_BLK_DEV_SD=y CONFIG_BLK_DEV_SR=m CONFIG_CHR_DEV_SG=y CONFIG_ATA=y CONFIG_SATA_PROMISE=y +CONFIG_PATA_ARTOP=y CONFIG_PATA_PDC2027X=m +CONFIG_PATA_SIL680=y +CONFIG_ATA_GENERIC=y CONFIG_MD=y CONFIG_BLK_DEV_MD=m CONFIG_MD_LINEAR=m diff --git a/arch/powerpc/configs/chrp32_defconfig b/arch/powerpc/configs/chrp32_defconfig index ac9a50d..1f6f90c 100644 --- a/arch/powerpc/configs/chrp32_defconfig +++ b/arch/powerpc/configs/chrp32_defconfig @@ -42,12 +42,6 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_BLK_DEV_FD=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_SL82C105=y -CONFIG_BLK_DEV_VIA82CXXX=y -CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y CONFIG_BLK_DEV_SR=y @@ -56,6 +50,10 @@ CONFIG_CHR_DEV_SG=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_SYM53C8XX_2=y CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0 +CONFIG_ATA=y +CONFIG_PATA_VIA=y +CONFIG_PATA_WINBOND=y +CONFIG_ATA_GENERIC=y CONFIG_NETDEVICES=y CONFIG_PCNET32=y CONFIG_NET_TULIP=y diff --git a/arch/powerpc/configs/fsl-emb-nonhw.config b/arch/powerpc/configs/fsl-emb-nonhw.config index 1a61e81..cc49c95 100644 --- a/arch/powerpc/configs/fsl-emb-nonhw.config +++ b/arch/powerpc/configs/fsl-emb-nonhw.config @@ -44,6 +44,7 @@ CONFIG_FORCE_MAX_ZONEORDER=13 CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_FRAME_WARN=1024 CONFIG_FTL=y +CONFIG_GPIO_GENERIC_PLATFORM=y CONFIG_HFS_FS=m CONFIG_HFSPLUS_FS=m CONFIG_HIGH_RES_TIMERS=y @@ -104,8 +105,13 @@ CONFIG_PACKET=y CONFIG_PARTITION_ADVANCED=y CONFIG_PERF_EVENTS=y CONFIG_POSIX_MQUEUE=y +CONFIG_POWER_SUPPLY=y +CONFIG_POWER_RESET=y +CONFIG_POWER_RESET_GPIO=y +CONFIG_POWER_RESET_GPIO_RESTART=y CONFIG_QNX4FS_FS=m CONFIG_RCU_TRACE=y +CONFIG_RESET_CONTROLLER=y CONFIG_ROOT_NFS=y CONFIG_SYSV_FS=m CONFIG_SYSVIPC=y diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig index 3b2511c..e18f2e0 100644 --- a/arch/powerpc/configs/g5_defconfig +++ b/arch/powerpc/configs/g5_defconfig @@ -60,10 +60,6 @@ CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 CONFIG_CDROM_PKTCDVD=m -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_BLK_DEV_IDE_PMAC=y -CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y CONFIG_BLK_DEV_SR=y @@ -73,6 +69,7 @@ CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_SPI_ATTRS=y CONFIG_ATA=y CONFIG_SATA_SVW=y +CONFIG_PATA_MACIO=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=y diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig index 27abfab..c401817 100644 --- a/arch/powerpc/configs/maple_defconfig +++ b/arch/powerpc/configs/maple_defconfig @@ -39,16 +39,15 @@ CONFIG_IP_PNP_DHCP=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=8192 -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_IDE_TASK_IOCTL=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_AMD74XX=y # CONFIG_SCSI_PROC_FS is not set CONFIG_BLK_DEV_SD=y +CONFIG_BLK_DEV_SR=y +CONFIG_BLK_DEV_SR_VENDOR=y CONFIG_CHR_DEV_SG=y CONFIG_SCSI_IPR=y CONFIG_ATA=y +CONFIG_PATA_AMD=y +CONFIG_ATA_GENERIC=y CONFIG_NETDEVICES=y CONFIG_AMD8111_ETH=y CONFIG_TIGON3=y diff --git a/arch/powerpc/configs/pasemi_defconfig b/arch/powerpc/configs/pasemi_defconfig index 76f4edd..5553c5c 100644 --- a/arch/powerpc/configs/pasemi_defconfig +++ b/arch/powerpc/configs/pasemi_defconfig @@ -58,9 +58,6 @@ CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=16384 CONFIG_EEPROM_LEGACY=y -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_IDE_TASK_IOCTL=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y CONFIG_CHR_DEV_OSST=y diff --git a/arch/powerpc/configs/pmac32_defconfig b/arch/powerpc/configs/pmac32_defconfig index e5a674d..fc1e7a7 100644 --- a/arch/powerpc/configs/pmac32_defconfig +++ b/arch/powerpc/configs/pmac32_defconfig @@ -117,15 +117,6 @@ CONFIG_CONNECTOR=y CONFIG_MAC_FLOPPY=m CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECS=m -CONFIG_BLK_DEV_IDECD=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_PDC202XX_NEW=y -CONFIG_BLK_DEV_SL82C105=y -CONFIG_BLK_DEV_IDE_PMAC=y -CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y -CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y CONFIG_BLK_DEV_SR=y @@ -140,6 +131,12 @@ CONFIG_SCSI_SYM53C8XX_2=y CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0 CONFIG_SCSI_MESH=y CONFIG_SCSI_MAC53C94=y +CONFIG_ATA=y +CONFIG_PATA_MACIO=y +CONFIG_PATA_PDC2027X=y +CONFIG_PATA_WINBOND=y +CONFIG_PATA_PCMCIA=m +CONFIG_ATA_GENERIC=y CONFIG_MD=y CONFIG_BLK_DEV_MD=m CONFIG_MD_LINEAR=m diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig index d98b6eb..e4d53fe 100644 --- a/arch/powerpc/configs/powernv_defconfig +++ b/arch/powerpc/configs/powernv_defconfig @@ -49,6 +49,7 @@ CONFIG_BINFMT_MISC=m CONFIG_PPC_TRANSACTIONAL_MEM=y CONFIG_HOTPLUG_CPU=y CONFIG_KEXEC=y +CONFIG_KEXEC_FILE=y CONFIG_IRQ_ALL_CPUS=y CONFIG_NUMA=y CONFIG_MEMORY_HOTPLUG=y @@ -241,10 +242,6 @@ CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y -CONFIG_REISERFS_FS=m -CONFIG_REISERFS_FS_XATTR=y -CONFIG_REISERFS_FS_POSIX_ACL=y -CONFIG_REISERFS_FS_SECURITY=y CONFIG_JFS_FS=m CONFIG_JFS_POSIX_ACL=y CONFIG_JFS_SECURITY=y @@ -300,7 +297,10 @@ CONFIG_CRYPTO_TEST=m CONFIG_CRYPTO_CCM=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPT_CRC32C_VPMSUM=m +CONFIG_CRYPTO_MD5_PPC=m CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_TGR192=m CONFIG_CRYPTO_WP512=m CONFIG_CRYPTO_ANUBIS=m @@ -308,6 +308,7 @@ CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_SALSA20=m +CONFIG_CRYPTO_SHA1_PPC=m CONFIG_CRYPTO_SERPENT=m CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig index 58a98d4..0396126 100644 --- a/arch/powerpc/configs/ppc64_defconfig +++ b/arch/powerpc/configs/ppc64_defconfig @@ -46,6 +46,7 @@ CONFIG_HZ_100=y CONFIG_BINFMT_MISC=m CONFIG_PPC_TRANSACTIONAL_MEM=y CONFIG_KEXEC=y +CONFIG_KEXEC_FILE=y CONFIG_CRASH_DUMP=y CONFIG_IRQ_ALL_CPUS=y CONFIG_MEMORY_HOTREMOVE=y @@ -85,12 +86,6 @@ CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 CONFIG_VIRTIO_BLK=m -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_AMD74XX=y -CONFIG_BLK_DEV_IDE_PMAC=y -CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=m CONFIG_BLK_DEV_SR=y @@ -120,6 +115,9 @@ CONFIG_SATA_AHCI=y CONFIG_SATA_SIL24=y CONFIG_SATA_MV=y CONFIG_SATA_SVW=y +CONFIG_PATA_AMD=y +CONFIG_PATA_MACIO=y +CONFIG_ATA_GENERIC=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=y @@ -335,7 +333,10 @@ CONFIG_PPC_EARLY_DEBUG=y CONFIG_CRYPTO_TEST=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPT_CRC32C_VPMSUM=m +CONFIG_CRYPTO_MD5_PPC=m CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_TGR192=m CONFIG_CRYPTO_WP512=m CONFIG_CRYPTO_ANUBIS=m @@ -343,6 +344,7 @@ CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_SALSA20=m +CONFIG_CRYPTO_SHA1_PPC=m CONFIG_CRYPTO_SERPENT=m CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m diff --git a/arch/powerpc/configs/ppc64e_defconfig b/arch/powerpc/configs/ppc64e_defconfig index fd2edd6..11a3473 100644 --- a/arch/powerpc/configs/ppc64e_defconfig +++ b/arch/powerpc/configs/ppc64e_defconfig @@ -59,10 +59,6 @@ CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_AMD74XX=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y CONFIG_BLK_DEV_SR=y @@ -79,6 +75,8 @@ CONFIG_SCSI_DEBUG=m CONFIG_ATA=y CONFIG_SATA_SIL24=y CONFIG_SATA_SVW=y +CONFIG_PATA_AMD=y +CONFIG_ATA_GENERIC=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=y diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig index 8fbf498..3ce91a3 100644 --- a/arch/powerpc/configs/ppc6xx_defconfig +++ b/arch/powerpc/configs/ppc6xx_defconfig @@ -378,13 +378,6 @@ CONFIG_EEPROM_AT24=m CONFIG_EEPROM_LEGACY=m CONFIG_EEPROM_MAX6875=m CONFIG_EEPROM_93CX6=m -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=m -CONFIG_IDE_TASK_IOCTL=y -# CONFIG_IDEPCI_PCIBUS_ORDER is not set -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_IDE_PMAC=y -CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y CONFIG_RAID_ATTRS=m CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=m @@ -411,13 +404,14 @@ CONFIG_ATA=y CONFIG_SATA_FSL=m CONFIG_PDC_ADMA=m CONFIG_ATA_PIIX=m +CONFIG_PATA_MACIO=y CONFIG_PATA_MPC52xx=m CONFIG_PATA_OPTIDMA=m CONFIG_PATA_SCH=m CONFIG_PATA_VIA=m CONFIG_PATA_PLATFORM=m CONFIG_PATA_OF_PLATFORM=m -CONFIG_ATA_GENERIC=m +CONFIG_ATA_GENERIC=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=m diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig index 8a3bc01..5a06bdd 100644 --- a/arch/powerpc/configs/pseries_defconfig +++ b/arch/powerpc/configs/pseries_defconfig @@ -52,6 +52,7 @@ CONFIG_HZ_100=y CONFIG_BINFMT_MISC=m CONFIG_PPC_TRANSACTIONAL_MEM=y CONFIG_KEXEC=y +CONFIG_KEXEC_FILE=y CONFIG_IRQ_ALL_CPUS=y CONFIG_MEMORY_HOTPLUG=y CONFIG_MEMORY_HOTREMOVE=y @@ -92,10 +93,6 @@ CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 CONFIG_VIRTIO_BLK=m -CONFIG_IDE=y -CONFIG_BLK_DEV_IDECD=y -CONFIG_BLK_DEV_GENERIC=y -CONFIG_BLK_DEV_AMD74XX=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=m CONFIG_BLK_DEV_SR=y @@ -122,7 +119,8 @@ CONFIG_SCSI_DH_RDAC=m CONFIG_SCSI_DH_ALUA=m CONFIG_ATA=y CONFIG_SATA_AHCI=y -# CONFIG_ATA_SFF is not set +CONFIG_PATA_AMD=y +CONFIG_ATA_GENERIC=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=y @@ -244,10 +242,6 @@ CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y -CONFIG_REISERFS_FS=m -CONFIG_REISERFS_FS_XATTR=y -CONFIG_REISERFS_FS_POSIX_ACL=y -CONFIG_REISERFS_FS_SECURITY=y CONFIG_JFS_FS=m CONFIG_JFS_POSIX_ACL=y CONFIG_JFS_SECURITY=y @@ -302,7 +296,10 @@ CONFIG_XMON=y CONFIG_CRYPTO_TEST=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPT_CRC32C_VPMSUM=m +CONFIG_CRYPTO_MD5_PPC=m CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_TGR192=m CONFIG_CRYPTO_WP512=m CONFIG_CRYPTO_ANUBIS=m @@ -310,6 +307,7 @@ CONFIG_CRYPTO_BLOWFISH=m CONFIG_CRYPTO_CAST6=m CONFIG_CRYPTO_KHAZAD=m CONFIG_CRYPTO_SALSA20=m +CONFIG_CRYPTO_SHA1_PPC=m CONFIG_CRYPTO_SERPENT=m CONFIG_CRYPTO_TEA=m CONFIG_CRYPTO_TWOFISH=m diff --git a/arch/powerpc/configs/storcenter_defconfig b/arch/powerpc/configs/storcenter_defconfig index e9122b1..74bca2e 100644 --- a/arch/powerpc/configs/storcenter_defconfig +++ b/arch/powerpc/configs/storcenter_defconfig @@ -36,12 +36,11 @@ CONFIG_NFTL_RW=y CONFIG_MTD_CFI=y CONFIG_MTD_CFI_AMDSTD=y CONFIG_MTD_PHYSMAP=y -CONFIG_IDE=y -CONFIG_BLK_DEV_VIA82CXXX=y -CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_BLK_DEV_SR=y CONFIG_SCSI_SPI_ATTRS=y +CONFIG_ATA=y +CONFIG_PATA_VIA=y CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=y diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h index e0baba1..8159256 100644 --- a/arch/powerpc/include/asm/asm-prototypes.h +++ b/arch/powerpc/include/asm/asm-prototypes.h @@ -13,7 +13,6 @@ */ #include <linux/threads.h> -#include <linux/kprobes.h> #include <asm/cacheflush.h> #include <asm/checksum.h> #include <asm/uaccess.h> diff --git a/arch/powerpc/include/asm/book3s/32/pgalloc.h b/arch/powerpc/include/asm/book3s/32/pgalloc.h index 8e21bb4..d310546 100644 --- a/arch/powerpc/include/asm/book3s/32/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/32/pgalloc.h @@ -2,14 +2,42 @@ #define _ASM_POWERPC_BOOK3S_32_PGALLOC_H #include <linux/threads.h> +#include <linux/slab.h> -/* For 32-bit, all levels of page tables are just drawn from get_free_page() */ -#define MAX_PGTABLE_INDEX_SIZE 0 +/* + * Functions that deal with pagetables that could be at any level of + * the table need to be passed an "index_size" so they know how to + * handle allocation. For PTE pages (which are linked to a struct + * page for now, and drawn from the main get_free_pages() pool), the + * allocation size will be (2^index_size * sizeof(pointer)) and + * allocations are drawn from the kmem_cache in PGT_CACHE(index_size). + * + * The maximum index size needs to be big enough to allow any + * pagetable sizes we need, but small enough to fit in the low bits of + * any page table pointer. In other words all pagetables, even tiny + * ones, must be aligned to allow at least enough low 0 bits to + * contain this value. This value is also used as a mask, so it must + * be one less than a power of two. + */ +#define MAX_PGTABLE_INDEX_SIZE 0xf extern void __bad_pte(pmd_t *pmd); -extern pgd_t *pgd_alloc(struct mm_struct *mm); -extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); +extern struct kmem_cache *pgtable_cache[]; +#define PGT_CACHE(shift) ({ \ + BUG_ON(!(shift)); \ + pgtable_cache[(shift) - 1]; \ + }) + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE), GFP_KERNEL); +} + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd); +} /* * We don't have any real pmd's, and this code never triggers because @@ -68,8 +96,12 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) static inline void pgtable_free(void *table, unsigned index_size) { - BUG_ON(index_size); /* 32-bit doesn't use this */ - free_page((unsigned long)table); + if (!index_size) { + free_page((unsigned long)table); + } else { + BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE); + kmem_cache_free(PGT_CACHE(index_size), table); + } } #define check_pgt_cache() do { } while (0) diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 6b8b2d5..0122236 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -8,6 +8,23 @@ /* And here we include common definitions */ #include <asm/pte-common.h> +#define PTE_INDEX_SIZE PTE_SHIFT +#define PMD_INDEX_SIZE 0 +#define PUD_INDEX_SIZE 0 +#define PGD_INDEX_SIZE (32 - PGDIR_SHIFT) + +#define PMD_CACHE_INDEX PMD_INDEX_SIZE + +#ifndef __ASSEMBLY__ +#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_INDEX_SIZE) +#define PMD_TABLE_SIZE 0 +#define PUD_TABLE_SIZE 0 +#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) +#endif /* __ASSEMBLY__ */ + +#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) +#define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) + /* * The normal case is that PTEs are 32-bits and we have a 1-page * 1024-entry pgdir pointing to 1-page 1024-entry PTE pages. -- paulus @@ -19,14 +36,10 @@ * -Matt */ /* PGDIR_SHIFT determines what a top-level page table entry can map */ -#define PGDIR_SHIFT (PAGE_SHIFT + PTE_SHIFT) +#define PGDIR_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) #define PGDIR_SIZE (1UL << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) -#define PTRS_PER_PTE (1 << PTE_SHIFT) -#define PTRS_PER_PMD 1 -#define PTRS_PER_PGD (1 << (32 - PGDIR_SHIFT)) - #define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE) /* * This is the bottom of the PKMAP area with HIGHMEM or an arbitrary @@ -82,12 +95,8 @@ extern unsigned long ioremap_bot; -/* - * entries per page directory level: our page-table tree is two-level, so - * we don't really have any PMD directory. - */ -#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_SHIFT) -#define PGD_TABLE_SIZE (sizeof(pgd_t) << (32 - PGDIR_SHIFT)) +/* Bits to mask out from a PGD to get to the PUD page */ +#define PGD_MASKED_BITS 0 #define pte_ERROR(e) \ pr_err("%s:%d: bad pte %llx.\n", __FILE__, __LINE__, \ @@ -224,7 +233,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, static inline void __ptep_set_access_flags(struct mm_struct *mm, - pte_t *ptep, pte_t entry) + pte_t *ptep, pte_t entry, + unsigned long address) { unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); @@ -283,15 +293,6 @@ static inline void __ptep_set_access_flags(struct mm_struct *mm, #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 3 }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val << 3 }) -#ifndef CONFIG_PPC_4K_PAGES -void pgtable_cache_init(void); -#else -/* - * No page table caches to initialise - */ -#define pgtable_cache_init() do { } while (0) -#endif - extern int get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep, pmd_t **pmdp); diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h index 1af837c..1c64bc6 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -16,9 +16,6 @@ #define H_PUD_TABLE_SIZE (sizeof(pud_t) << H_PUD_INDEX_SIZE) #define H_PGD_TABLE_SIZE (sizeof(pgd_t) << H_PGD_INDEX_SIZE) -/* With 4k base page size, hugepage PTEs go at the PMD level */ -#define MIN_HUGEPTE_SHIFT PMD_SHIFT - /* PTE flags to conserve for HPTE identification */ #define _PAGE_HPTEFLAGS (H_PAGE_BUSY | H_PAGE_HASHPTE | \ H_PAGE_F_SECOND | H_PAGE_F_GIX) diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h index 5aae4f5..f3dd21e 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -6,9 +6,6 @@ #define H_PUD_INDEX_SIZE 5 #define H_PGD_INDEX_SIZE 12 -/* With 4k base page size, hugepage PTEs go at the PMD level */ -#define MIN_HUGEPTE_SHIFT PAGE_SHIFT - #define H_PAGE_COMBO 0x00001000 /* this is a combo 4k page */ #define H_PAGE_4K_PFN 0x00002000 /* PFN is for a single 4k page */ /* diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h b/arch/powerpc/include/asm/book3s/64/hugetlb.h index c45189a..c62f14d 100644 --- a/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h +++ b/arch/powerpc/include/asm/book3s/64/hugetlb.h @@ -1,5 +1,5 @@ -#ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_RADIX_H -#define _ASM_POWERPC_BOOK3S_64_HUGETLB_RADIX_H +#ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_H +#define _ASM_POWERPC_BOOK3S_64_HUGETLB_H /* * For radix we want generic code to handle hugetlb. But then if we want * both hash and radix to be enabled together we need to workaround the @@ -21,9 +21,33 @@ static inline int hstate_get_psize(struct hstate *hstate) return MMU_PAGE_2M; else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) return MMU_PAGE_1G; + else if (shift == mmu_psize_defs[MMU_PAGE_16M].shift) + return MMU_PAGE_16M; + else if (shift == mmu_psize_defs[MMU_PAGE_16G].shift) + return MMU_PAGE_16G; else { WARN(1, "Wrong huge page shift\n"); return mmu_virtual_psize; } } + +#define arch_make_huge_pte arch_make_huge_pte +static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, + struct page *page, int writable) +{ + unsigned long page_shift; + + if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) + return entry; + + page_shift = huge_page_shift(hstate_vma(vma)); + /* + * We don't support 1G hugetlb pages yet. + */ + VM_WARN_ON(page_shift == mmu_psize_defs[MMU_PAGE_1G].shift); + if (page_shift == mmu_psize_defs[MMU_PAGE_2M].shift) + return __pte(pte_val(entry) | _PAGE_LARGE); + else + return entry; +} #endif diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 0ebfbc8..5905f0f 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -26,6 +26,11 @@ #define _RPAGE_SW1 0x00800 #define _RPAGE_SW2 0x00400 #define _RPAGE_SW3 0x00200 +#define _RPAGE_RSV1 0x1000000000000000UL +#define _RPAGE_RSV2 0x0800000000000000UL +#define _RPAGE_RSV3 0x0400000000000000UL +#define _RPAGE_RSV4 0x0200000000000000UL + #ifdef CONFIG_MEM_SOFT_DIRTY #define _PAGE_SOFT_DIRTY _RPAGE_SW3 /* software: software dirty tracking */ #else @@ -33,6 +38,11 @@ #endif #define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */ +/* + * For P9 DD1 only, we need to track whether the pte's huge. + */ +#define _PAGE_LARGE _RPAGE_RSV1 + #define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */ #define _PAGE_PRESENT (1ul << 63) /* pte contains a translation */ @@ -568,10 +578,11 @@ static inline bool check_pte_access(unsigned long access, unsigned long ptev) */ static inline void __ptep_set_access_flags(struct mm_struct *mm, - pte_t *ptep, pte_t entry) + pte_t *ptep, pte_t entry, + unsigned long address) { if (radix_enabled()) - return radix__ptep_set_access_flags(mm, ptep, entry); + return radix__ptep_set_access_flags(mm, ptep, entry, address); return hash__ptep_set_access_flags(ptep, entry); } @@ -789,9 +800,6 @@ extern struct page *pgd_page(pgd_t pgd); #define pgd_ERROR(e) \ pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) -void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); -void pgtable_cache_init(void); - static inline int map_kernel_page(unsigned long ea, unsigned long pa, unsigned long flags) { diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 2a46dea..b4d1302 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -140,19 +140,20 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm, unsigned long new_pte; old_pte = __radix_pte_update(ptep, ~0, 0); - asm volatile("ptesync" : : : "memory"); /* * new value of pte */ new_pte = (old_pte | set) & ~clr; - /* - * For now let's do heavy pid flush - * radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize); + * If we are trying to clear the pte, we can skip + * the below sequence and batch the tlb flush. The + * tlb flush batching is done by mmu gather code */ - radix__flush_tlb_mm(mm); - - __radix_pte_update(ptep, 0, new_pte); + if (new_pte) { + asm volatile("ptesync" : : : "memory"); + radix__flush_tlb_pte_p9_dd1(old_pte, mm, addr); + __radix_pte_update(ptep, 0, new_pte); + } } else old_pte = __radix_pte_update(ptep, clr, set); asm volatile("ptesync" : : : "memory"); @@ -167,7 +168,8 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm, * function doesn't need to invalidate tlb. */ static inline void radix__ptep_set_access_flags(struct mm_struct *mm, - pte_t *ptep, pte_t entry) + pte_t *ptep, pte_t entry, + unsigned long address) { unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | @@ -183,13 +185,7 @@ static inline void radix__ptep_set_access_flags(struct mm_struct *mm, * new value of pte */ new_pte = old_pte | set; - - /* - * For now let's do heavy pid flush - * radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize); - */ - radix__flush_tlb_mm(mm); - + radix__flush_tlb_pte_p9_dd1(old_pte, mm, address); __radix_pte_update(ptep, 0, new_pte); } else __radix_pte_update(ptep, 0, set); @@ -243,6 +239,8 @@ static inline int radix__pmd_trans_huge(pmd_t pmd) static inline pmd_t radix__pmd_mkhuge(pmd_t pmd) { + if (cpu_has_feature(CPU_FTR_POWER9_DD1)) + return __pmd(pmd_val(pmd) | _PAGE_PTE | _PAGE_LARGE); return __pmd(pmd_val(pmd) | _PAGE_PTE); } static inline void radix__pmdp_huge_split_prepare(struct vm_area_struct *vma, diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h index a9e19cb..cc7fbde 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h @@ -42,4 +42,6 @@ extern void radix__flush_tlb_lpid_va(unsigned long lpid, unsigned long gpa, unsigned long page_size); extern void radix__flush_tlb_lpid(unsigned long lpid); extern void radix__flush_tlb_all(void); +extern void radix__flush_tlb_pte_p9_dd1(unsigned long old_pte, struct mm_struct *mm, + unsigned long address); #endif diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h index ffbafbf..7657aa8 100644 --- a/arch/powerpc/include/asm/cache.h +++ b/arch/powerpc/include/asm/cache.h @@ -20,12 +20,15 @@ #endif #else /* CONFIG_PPC64 */ #define L1_CACHE_SHIFT 7 +#define IFETCH_ALIGN_SHIFT 4 /* POWER8,9 */ #endif #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) #define SMP_CACHE_BYTES L1_CACHE_BYTES +#define IFETCH_ALIGN_BYTES (1 << IFETCH_ALIGN_SHIFT) + #if defined(__powerpc64__) && !defined(__ASSEMBLY__) struct ppc64_caches { u32 dsize; /* L1 d-cache size */ diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h index 44efe73..fc46b66 100644 --- a/arch/powerpc/include/asm/cmpxchg.h +++ b/arch/powerpc/include/asm/cmpxchg.h @@ -7,6 +7,71 @@ #include <asm/asm-compat.h> #include <linux/bug.h> +#ifdef __BIG_ENDIAN +#define BITOFF_CAL(size, off) ((sizeof(u32) - size - off) * BITS_PER_BYTE) +#else +#define BITOFF_CAL(size, off) (off * BITS_PER_BYTE) +#endif + +#define XCHG_GEN(type, sfx, cl) \ +static inline u32 __xchg_##type##sfx(volatile void *p, u32 val) \ +{ \ + unsigned int prev, prev_mask, tmp, bitoff, off; \ + \ + off = (unsigned long)p % sizeof(u32); \ + bitoff = BITOFF_CAL(sizeof(type), off); \ + p -= off; \ + val <<= bitoff; \ + prev_mask = (u32)(type)-1 << bitoff; \ + \ + __asm__ __volatile__( \ +"1: lwarx %0,0,%3\n" \ +" andc %1,%0,%5\n" \ +" or %1,%1,%4\n" \ + PPC405_ERR77(0,%3) \ +" stwcx. %1,0,%3\n" \ +" bne- 1b\n" \ + : "=&r" (prev), "=&r" (tmp), "+m" (*(u32*)p) \ + : "r" (p), "r" (val), "r" (prev_mask) \ + : "cc", cl); \ + \ + return prev >> bitoff; \ +} + +#define CMPXCHG_GEN(type, sfx, br, br2, cl) \ +static inline \ +u32 __cmpxchg_##type##sfx(volatile void *p, u32 old, u32 new) \ +{ \ + unsigned int prev, prev_mask, tmp, bitoff, off; \ + \ + off = (unsigned long)p % sizeof(u32); \ + bitoff = BITOFF_CAL(sizeof(type), off); \ + p -= off; \ + old <<= bitoff; \ + new <<= bitoff; \ + prev_mask = (u32)(type)-1 << bitoff; \ + \ + __asm__ __volatile__( \ + br \ +"1: lwarx %0,0,%3\n" \ +" and %1,%0,%6\n" \ +" cmpw 0,%1,%4\n" \ +" bne- 2f\n" \ +" andc %1,%0,%6\n" \ +" or %1,%1,%5\n" \ + PPC405_ERR77(0,%3) \ +" stwcx. %1,0,%3\n" \ +" bne- 1b\n" \ + br2 \ + "\n" \ +"2:" \ + : "=&r" (prev), "=&r" (tmp), "+m" (*(u32*)p) \ + : "r" (p), "r" (old), "r" (new), "r" (prev_mask) \ + : "cc", cl); \ + \ + return prev >> bitoff; \ +} + /* * Atomic exchange * @@ -14,6 +79,11 @@ * the previous value stored there. */ +XCHG_GEN(u8, _local, "memory"); +XCHG_GEN(u8, _relaxed, "cc"); +XCHG_GEN(u16, _local, "memory"); +XCHG_GEN(u16, _relaxed, "cc"); + static __always_inline unsigned long __xchg_u32_local(volatile void *p, unsigned long val) { @@ -85,9 +155,13 @@ __xchg_u64_relaxed(u64 *p, unsigned long val) #endif static __always_inline unsigned long -__xchg_local(volatile void *ptr, unsigned long x, unsigned int size) +__xchg_local(void *ptr, unsigned long x, unsigned int size) { switch (size) { + case 1: + return __xchg_u8_local(ptr, x); + case 2: + return __xchg_u16_local(ptr, x); case 4: return __xchg_u32_local(ptr, x); #ifdef CONFIG_PPC64 @@ -103,6 +177,10 @@ static __always_inline unsigned long __xchg_relaxed(void *ptr, unsigned long x, unsigned int size) { switch (size) { + case 1: + return __xchg_u8_relaxed(ptr, x); + case 2: + return __xchg_u16_relaxed(ptr, x); case 4: return __xchg_u32_relaxed(ptr, x); #ifdef CONFIG_PPC64 @@ -131,6 +209,15 @@ __xchg_relaxed(void *ptr, unsigned long x, unsigned int size) * and return the old value of *p. */ +CMPXCHG_GEN(u8, , PPC_ATOMIC_ENTRY_BARRIER, PPC_ATOMIC_EXIT_BARRIER, "memory"); +CMPXCHG_GEN(u8, _local, , , "memory"); +CMPXCHG_GEN(u8, _acquire, , PPC_ACQUIRE_BARRIER, "memory"); +CMPXCHG_GEN(u8, _relaxed, , , "cc"); +CMPXCHG_GEN(u16, , PPC_ATOMIC_ENTRY_BARRIER, PPC_ATOMIC_EXIT_BARRIER, "memory"); +CMPXCHG_GEN(u16, _local, , , "memory"); +CMPXCHG_GEN(u16, _acquire, , PPC_ACQUIRE_BARRIER, "memory"); +CMPXCHG_GEN(u16, _relaxed, , , "cc"); + static __always_inline unsigned long __cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new) { @@ -316,6 +403,10 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, unsigned int size) { switch (size) { + case 1: + return __cmpxchg_u8(ptr, old, new); + case 2: + return __cmpxchg_u16(ptr, old, new); case 4: return __cmpxchg_u32(ptr, old, new); #ifdef CONFIG_PPC64 @@ -328,10 +419,14 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, } static __always_inline unsigned long -__cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new, +__cmpxchg_local(void *ptr, unsigned long old, unsigned long new, unsigned int size) { switch (size) { + case 1: + return __cmpxchg_u8_local(ptr, old, new); + case 2: + return __cmpxchg_u16_local(ptr, old, new); case 4: return __cmpxchg_u32_local(ptr, old, new); #ifdef CONFIG_PPC64 @@ -348,6 +443,10 @@ __cmpxchg_relaxed(void *ptr, unsigned long old, unsigned long new, unsigned int size) { switch (size) { + case 1: + return __cmpxchg_u8_relaxed(ptr, old, new); + case 2: + return __cmpxchg_u16_relaxed(ptr, old, new); case 4: return __cmpxchg_u32_relaxed(ptr, old, new); #ifdef CONFIG_PPC64 @@ -364,6 +463,10 @@ __cmpxchg_acquire(void *ptr, unsigned long old, unsigned long new, unsigned int size) { switch (size) { + case 1: + return __cmpxchg_u8_acquire(ptr, old, new); + case 2: + return __cmpxchg_u16_acquire(ptr, old, new); case 4: return __cmpxchg_u32_acquire(ptr, old, new); #ifdef CONFIG_PPC64 diff --git a/arch/powerpc/include/asm/debug.h b/arch/powerpc/include/asm/debug.h index a954e49..86308f1 100644 --- a/arch/powerpc/include/asm/debug.h +++ b/arch/powerpc/include/asm/debug.h @@ -10,7 +10,7 @@ struct pt_regs; extern struct dentry *powerpc_debugfs_root; -#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC) +#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE) extern int (*__debugger)(struct pt_regs *regs); extern int (*__debugger_ipi)(struct pt_regs *regs); diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h index 2a9cf84..eaada6c 100644 --- a/arch/powerpc/include/asm/futex.h +++ b/arch/powerpc/include/asm/futex.h @@ -23,10 +23,8 @@ "4: li %1,%3\n" \ "b 3b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - ".align 3\n" \ - PPC_LONG "1b,4b,2b,4b\n" \ - ".previous" \ + EX_TABLE(1b, 4b) \ + EX_TABLE(2b, 4b) \ : "=&r" (oldval), "=&r" (ret) \ : "b" (uaddr), "i" (-EFAULT), "r" (oparg) \ : "cr0", "memory") @@ -104,11 +102,9 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, "3: .section .fixup,\"ax\"\n\ 4: li %0,%6\n\ b 3b\n\ - .previous\n\ - .section __ex_table,\"a\"\n\ - .align 3\n\ - " PPC_LONG "1b,4b,2b,4b\n\ - .previous" \ + .previous\n" + EX_TABLE(1b, 4b) + EX_TABLE(2b, 4b) : "+r" (ret), "=&r" (prev), "+m" (*uaddr) : "r" (uaddr), "r" (oldval), "r" (newval), "i" (-EFAULT) : "cc", "memory"); diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h index ab90c2f..fca7033 100644 --- a/arch/powerpc/include/asm/head-64.h +++ b/arch/powerpc/include/asm/head-64.h @@ -95,12 +95,12 @@ end_##sname: #define __FIXED_SECTION_ENTRY_BEGIN(sname, name, __align) \ USE_FIXED_SECTION(sname); \ - .align __align; \ + .balign __align; \ .global name; \ name: #define FIXED_SECTION_ENTRY_BEGIN(sname, name) \ - __FIXED_SECTION_ENTRY_BEGIN(sname, name, 0) + __FIXED_SECTION_ENTRY_BEGIN(sname, name, IFETCH_ALIGN_BYTES) #define FIXED_SECTION_ENTRY_BEGIN_LOCATION(sname, name, start) \ USE_FIXED_SECTION(sname); \ @@ -203,9 +203,9 @@ name: #define EXC_VIRT_END(name, start, end) \ FIXED_SECTION_ENTRY_END_LOCATION(virt_vectors, exc_virt_##start##_##name, end) -#define EXC_COMMON_BEGIN(name) \ +#define EXC_COMMON_BEGIN(name) \ USE_TEXT_SECTION(); \ - .align 7; \ + .balign IFETCH_ALIGN_BYTES; \ .global name; \ DEFINE_FIXED_SYMBOL(name); \ name: diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index c5517f4..ede2151 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -9,7 +9,7 @@ extern struct kmem_cache *hugepte_cache; #ifdef CONFIG_PPC_BOOK3S_64 -#include <asm/book3s/64/hugetlb-radix.h> +#include <asm/book3s/64/hugetlb.h> /* * This should work for other subarchs too. But right now we use the * new format only for 64bit book3s @@ -51,12 +51,20 @@ static inline void __local_flush_hugetlb_page(struct vm_area_struct *vma, static inline pte_t *hugepd_page(hugepd_t hpd) { BUG_ON(!hugepd_ok(hpd)); +#ifdef CONFIG_PPC_8xx + return (pte_t *)__va(hpd.pd & ~(_PMD_PAGE_MASK | _PMD_PRESENT_MASK)); +#else return (pte_t *)((hpd.pd & ~HUGEPD_SHIFT_MASK) | PD_HUGE); +#endif } static inline unsigned int hugepd_shift(hugepd_t hpd) { +#ifdef CONFIG_PPC_8xx + return ((hpd.pd & _PMD_PAGE_MASK) >> 1) + 17; +#else return hpd.pd & HUGEPD_SHIFT_MASK; +#endif } #endif /* CONFIG_PPC_BOOK3S_64 */ @@ -99,7 +107,15 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea, pte_t pte); +#ifdef CONFIG_PPC_8xx +static inline void flush_hugetlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + flush_tlb_page(vma, vmaddr); +} +#else void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +#endif void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, unsigned long floor, @@ -205,7 +221,8 @@ static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, * are reserved early in the boot process by memblock instead of via * the .dts as on IBM platforms. */ -#if defined(CONFIG_HUGETLB_PAGE) && defined(CONFIG_PPC_FSL_BOOK3E) +#if defined(CONFIG_HUGETLB_PAGE) && (defined(CONFIG_PPC_FSL_BOOK3E) || \ + defined(CONFIG_PPC_8xx)) extern void __init reserve_hugetlb_gpages(void); #else static inline void reserve_hugetlb_gpages(void) diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 708edeb..77ff1ba 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -275,7 +275,9 @@ #define H_COP 0x304 #define H_GET_MPP_X 0x314 #define H_SET_MODE 0x31C -#define MAX_HCALL_OPCODE H_SET_MODE +#define H_CLEAR_HPT 0x358 +#define H_SIGNAL_SYS_RESET 0x380 +#define MAX_HCALL_OPCODE H_SIGNAL_SYS_RESET /* H_VIOCTL functions */ #define H_GET_VIOA_DUMP_SIZE 0x01 @@ -306,6 +308,11 @@ #define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE 3 #define H_SET_MODE_RESOURCE_LE 4 +/* Values for argument to H_SIGNAL_SYS_RESET */ +#define H_SIGNAL_SYS_RESET_ALL -1 +#define H_SIGNAL_SYS_RESET_ALL_OTHERS -2 +/* >= 0 values are CPU number */ + #ifndef __ASSEMBLY__ /** @@ -412,27 +419,6 @@ static inline unsigned int get_longbusy_msecs(int longbusy_rc) } } -#ifdef CONFIG_PPC_PSERIES -extern int CMO_PrPSP; -extern int CMO_SecPSP; -extern unsigned long CMO_PageSize; - -static inline int cmo_get_primary_psp(void) -{ - return CMO_PrPSP; -} - -static inline int cmo_get_secondary_psp(void) -{ - return CMO_SecPSP; -} - -static inline unsigned long cmo_get_page_size(void) -{ - return CMO_PageSize; -} -#endif /* CONFIG_PPC_PSERIES */ - #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_HVCALL_H */ diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index f6fda84..5ed2924 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -33,6 +33,7 @@ extern struct pci_dev *isa_bridge_pcidev; #include <asm/synch.h> #include <asm/delay.h> #include <asm/mmu.h> +#include <asm/ppc_asm.h> #include <asm-generic/iomap.h> @@ -458,13 +459,10 @@ static inline unsigned int name(unsigned int port) \ "5: li %0,-1\n" \ " b 4b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 2\n" \ - " .long 0b,5b\n" \ - " .long 1b,5b\n" \ - " .long 2b,5b\n" \ - " .long 3b,5b\n" \ - ".previous" \ + EX_TABLE(0b, 5b) \ + EX_TABLE(1b, 5b) \ + EX_TABLE(2b, 5b) \ + EX_TABLE(3b, 5b) \ : "=&r" (x) \ : "r" (port + _IO_BASE) \ : "memory"); \ @@ -479,11 +477,8 @@ static inline void name(unsigned int val, unsigned int port) \ "0:" op " %0,0,%1\n" \ "1: sync\n" \ "2:\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 2\n" \ - " .long 0b,2b\n" \ - " .long 1b,2b\n" \ - ".previous" \ + EX_TABLE(0b, 2b) \ + EX_TABLE(1b, 2b) \ : : "r" (val), "r" (port + _IO_BASE) \ : "memory"); \ } diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h index a46f5f4..6c3b715 100644 --- a/arch/powerpc/include/asm/kexec.h +++ b/arch/powerpc/include/asm/kexec.h @@ -53,7 +53,7 @@ typedef void (*crash_shutdown_t)(void); -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE /* * This function is responsible for capturing register states if coming @@ -91,7 +91,17 @@ static inline bool kdump_in_progress(void) return crashing_cpu >= 0; } -#else /* !CONFIG_KEXEC */ +#ifdef CONFIG_KEXEC_FILE +extern struct kexec_file_ops kexec_elf64_ops; + +int setup_purgatory(struct kimage *image, const void *slave_code, + const void *fdt, unsigned long kernel_load_addr, + unsigned long fdt_load_addr); +int setup_new_fdt(void *fdt, unsigned long initrd_load_addr, + unsigned long initrd_len, const char *cmdline); +#endif /* CONFIG_KEXEC_FILE */ + +#else /* !CONFIG_KEXEC_CORE */ static inline void crash_kexec_secondary(struct pt_regs *regs) { } static inline int overlaps_crashkernel(unsigned long start, unsigned long size) @@ -116,7 +126,7 @@ static inline bool kdump_in_progress(void) return false; } -#endif /* CONFIG_KEXEC */ +#endif /* CONFIG_KEXEC_CORE */ #endif /* ! __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_KEXEC_H */ diff --git a/arch/powerpc/include/asm/kprobes.h b/arch/powerpc/include/asm/kprobes.h index 2c9759bd..97b8c1f 100644 --- a/arch/powerpc/include/asm/kprobes.h +++ b/arch/powerpc/include/asm/kprobes.h @@ -32,6 +32,7 @@ #include <asm/probes.h> #include <asm/code-patching.h> +#ifdef CONFIG_KPROBES #define __ARCH_WANT_KPROBES_INSN_SLOT struct pt_regs; @@ -127,5 +128,11 @@ struct kprobe_ctlblk { extern int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *data); extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); +extern int kprobe_handler(struct pt_regs *regs); +extern int kprobe_post_handler(struct pt_regs *regs); +#else +static inline int kprobe_handler(struct pt_regs *regs) { return 0; } +static inline int kprobe_post_handler(struct pt_regs *regs) { return 0; } +#endif /* CONFIG_KPROBES */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_KPROBES_H */ diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index e02cbc6..5011b69 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -183,7 +183,7 @@ struct machdep_calls { */ void (*machine_shutdown)(void); -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE void (*kexec_cpu_down)(int crash_shutdown, int secondary); /* Called to do what every setup is needed on image and the @@ -198,7 +198,7 @@ struct machdep_calls { * no return. */ void (*machine_kexec)(struct kimage *image); -#endif /* CONFIG_KEXEC */ +#endif /* CONFIG_KEXEC_CORE */ #ifdef CONFIG_SUSPEND /* These are called to disable and enable, respectively, IRQs when diff --git a/arch/powerpc/include/asm/mmu-8xx.h b/arch/powerpc/include/asm/mmu-8xx.h index 3e0e492..798b5bf 100644 --- a/arch/powerpc/include/asm/mmu-8xx.h +++ b/arch/powerpc/include/asm/mmu-8xx.h @@ -172,6 +172,41 @@ typedef struct { #define PHYS_IMMR_BASE (mfspr(SPRN_IMMR) & 0xfff80000) #define VIRT_IMMR_BASE (__fix_to_virt(FIX_IMMR_BASE)) + +/* Page size definitions, common between 32 and 64-bit + * + * shift : is the "PAGE_SHIFT" value for that page size + * penc : is the pte encoding mask + * + */ +struct mmu_psize_def { + unsigned int shift; /* number of bits */ + unsigned int enc; /* PTE encoding */ + unsigned int ind; /* Corresponding indirect page size shift */ + unsigned int flags; +#define MMU_PAGE_SIZE_DIRECT 0x1 /* Supported as a direct size */ +#define MMU_PAGE_SIZE_INDIRECT 0x2 /* Supported as an indirect size */ +}; + +extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT]; + +static inline int shift_to_mmu_psize(unsigned int shift) +{ + int psize; + + for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) + if (mmu_psize_defs[psize].shift == shift) + return psize; + return -1; +} + +static inline unsigned int mmu_psize_to_shift(unsigned int mmu_psize) +{ + if (mmu_psize_defs[mmu_psize].shift) + return mmu_psize_defs[mmu_psize].shift; + BUG(); +} + #endif /* !__ASSEMBLY__ */ #if defined(CONFIG_PPC_4K_PAGES) diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 8d14993..a34c764 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -275,19 +275,20 @@ static inline bool early_radix_enabled(void) #define MMU_PAGE_64K 2 #define MMU_PAGE_64K_AP 3 /* "Admixed pages" (hash64 only) */ #define MMU_PAGE_256K 4 -#define MMU_PAGE_1M 5 -#define MMU_PAGE_2M 6 -#define MMU_PAGE_4M 7 -#define MMU_PAGE_8M 8 -#define MMU_PAGE_16M 9 -#define MMU_PAGE_64M 10 -#define MMU_PAGE_256M 11 -#define MMU_PAGE_1G 12 -#define MMU_PAGE_16G 13 -#define MMU_PAGE_64G 14 +#define MMU_PAGE_512K 5 +#define MMU_PAGE_1M 6 +#define MMU_PAGE_2M 7 +#define MMU_PAGE_4M 8 +#define MMU_PAGE_8M 9 +#define MMU_PAGE_16M 10 +#define MMU_PAGE_64M 11 +#define MMU_PAGE_256M 12 +#define MMU_PAGE_1G 13 +#define MMU_PAGE_16G 14 +#define MMU_PAGE_64G 15 /* N.B. we need to change the type of hpte_page_sizes if this gets to be > 16 */ -#define MMU_PAGE_COUNT 15 +#define MMU_PAGE_COUNT 16 #ifdef CONFIG_PPC_BOOK3S_64 #include <asm/book3s/64/mmu.h> diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 5c45114..b9e3f0a 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -19,16 +19,18 @@ extern void destroy_context(struct mm_struct *mm); struct mm_iommu_table_group_mem_t; extern int isolate_lru_page(struct page *page); /* from internal.h */ -extern bool mm_iommu_preregistered(void); -extern long mm_iommu_get(unsigned long ua, unsigned long entries, +extern bool mm_iommu_preregistered(struct mm_struct *mm); +extern long mm_iommu_get(struct mm_struct *mm, + unsigned long ua, unsigned long entries, struct mm_iommu_table_group_mem_t **pmem); -extern long mm_iommu_put(struct mm_iommu_table_group_mem_t *mem); -extern void mm_iommu_init(mm_context_t *ctx); -extern void mm_iommu_cleanup(mm_context_t *ctx); -extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup(unsigned long ua, - unsigned long size); -extern struct mm_iommu_table_group_mem_t *mm_iommu_find(unsigned long ua, - unsigned long entries); +extern long mm_iommu_put(struct mm_struct *mm, + struct mm_iommu_table_group_mem_t *mem); +extern void mm_iommu_init(struct mm_struct *mm); +extern void mm_iommu_cleanup(struct mm_struct *mm); +extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup(struct mm_struct *mm, + unsigned long ua, unsigned long size); +extern struct mm_iommu_table_group_mem_t *mm_iommu_find(struct mm_struct *mm, + unsigned long ua, unsigned long entries); extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem, unsigned long ua, unsigned long *hpa); extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem); diff --git a/arch/powerpc/include/asm/module.h b/arch/powerpc/include/asm/module.h index cd4ffd8..cc12c61 100644 --- a/arch/powerpc/include/asm/module.h +++ b/arch/powerpc/include/asm/module.h @@ -90,10 +90,6 @@ static inline int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sec } #endif -struct exception_table_entry; -void sort_ex_table(struct exception_table_entry *start, - struct exception_table_entry *finish); - #if defined(CONFIG_MODVERSIONS) && defined(CONFIG_PPC64) #define ARCH_RELOCATES_KCRCTAB #define reloc_start PHYSICAL_START diff --git a/arch/powerpc/include/asm/nohash/32/pgalloc.h b/arch/powerpc/include/asm/nohash/32/pgalloc.h index 76d6b9e..6331392 100644 --- a/arch/powerpc/include/asm/nohash/32/pgalloc.h +++ b/arch/powerpc/include/asm/nohash/32/pgalloc.h @@ -2,14 +2,42 @@ #define _ASM_POWERPC_PGALLOC_32_H #include <linux/threads.h> +#include <linux/slab.h> -/* For 32-bit, all levels of page tables are just drawn from get_free_page() */ -#define MAX_PGTABLE_INDEX_SIZE 0 +/* + * Functions that deal with pagetables that could be at any level of + * the table need to be passed an "index_size" so they know how to + * handle allocation. For PTE pages (which are linked to a struct + * page for now, and drawn from the main get_free_pages() pool), the + * allocation size will be (2^index_size * sizeof(pointer)) and + * allocations are drawn from the kmem_cache in PGT_CACHE(index_size). + * + * The maximum index size needs to be big enough to allow any + * pagetable sizes we need, but small enough to fit in the low bits of + * any page table pointer. In other words all pagetables, even tiny + * ones, must be aligned to allow at least enough low 0 bits to + * contain this value. This value is also used as a mask, so it must + * be one less than a power of two. + */ +#define MAX_PGTABLE_INDEX_SIZE 0xf extern void __bad_pte(pmd_t *pmd); -extern pgd_t *pgd_alloc(struct mm_struct *mm); -extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); +extern struct kmem_cache *pgtable_cache[]; +#define PGT_CACHE(shift) ({ \ + BUG_ON(!(shift)); \ + pgtable_cache[(shift) - 1]; \ + }) + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE), GFP_KERNEL); +} + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd); +} /* * We don't have any real pmd's, and this code never triggers because @@ -68,8 +96,12 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) static inline void pgtable_free(void *table, unsigned index_size) { - BUG_ON(index_size); /* 32-bit doesn't use this */ - free_page((unsigned long)table); + if (!index_size) { + free_page((unsigned long)table); + } else { + BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE); + kmem_cache_free(PGT_CACHE(index_size), table); + } } #define check_pgt_cache() do { } while (0) diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index c219ef7..ba9921b 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -16,6 +16,23 @@ extern int icache_44x_need_flush; #endif /* __ASSEMBLY__ */ +#define PTE_INDEX_SIZE PTE_SHIFT +#define PMD_INDEX_SIZE 0 +#define PUD_INDEX_SIZE 0 +#define PGD_INDEX_SIZE (32 - PGDIR_SHIFT) + +#define PMD_CACHE_INDEX PMD_INDEX_SIZE + +#ifndef __ASSEMBLY__ +#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_INDEX_SIZE) +#define PMD_TABLE_SIZE 0 +#define PUD_TABLE_SIZE 0 +#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) +#endif /* __ASSEMBLY__ */ + +#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) +#define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) + /* * The normal case is that PTEs are 32-bits and we have a 1-page * 1024-entry pgdir pointing to 1-page 1024-entry PTE pages. -- paulus @@ -27,22 +44,12 @@ extern int icache_44x_need_flush; * -Matt */ /* PGDIR_SHIFT determines what a top-level page table entry can map */ -#define PGDIR_SHIFT (PAGE_SHIFT + PTE_SHIFT) +#define PGDIR_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) #define PGDIR_SIZE (1UL << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) -/* - * entries per page directory level: our page-table tree is two-level, so - * we don't really have any PMD directory. - */ -#ifndef __ASSEMBLY__ -#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_SHIFT) -#define PGD_TABLE_SIZE (sizeof(pgd_t) << (32 - PGDIR_SHIFT)) -#endif /* __ASSEMBLY__ */ - -#define PTRS_PER_PTE (1 << PTE_SHIFT) -#define PTRS_PER_PMD 1 -#define PTRS_PER_PGD (1 << (32 - PGDIR_SHIFT)) +/* Bits to mask out from a PGD to get to the PUD page */ +#define PGD_MASKED_BITS 0 #define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE) #define FIRST_USER_ADDRESS 0UL @@ -268,7 +275,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, static inline void __ptep_set_access_flags(struct mm_struct *mm, - pte_t *ptep, pte_t entry) + pte_t *ptep, pte_t entry, + unsigned long address) { unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); @@ -328,15 +336,6 @@ static inline void __ptep_set_access_flags(struct mm_struct *mm, #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 3 }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val << 3 }) -#ifndef CONFIG_PPC_4K_PAGES -void pgtable_cache_init(void); -#else -/* - * No page table caches to initialise - */ -#define pgtable_cache_init() do { } while (0) -#endif - extern int get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep, pmd_t **pmdp); diff --git a/arch/powerpc/include/asm/nohash/32/pte-8xx.h b/arch/powerpc/include/asm/nohash/32/pte-8xx.h index 3742b19..b4df273 100644 --- a/arch/powerpc/include/asm/nohash/32/pte-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/pte-8xx.h @@ -49,6 +49,7 @@ #define _PMD_BAD 0x0ff0 #define _PMD_PAGE_MASK 0x000c #define _PMD_PAGE_8M 0x000c +#define _PMD_PAGE_512K 0x0004 /* Until my rework is finished, 8xx still needs atomic PTE updates */ #define PTE_ATOMIC_UPDATES 1 diff --git a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h b/arch/powerpc/include/asm/nohash/64/pgtable-4k.h index fc7d517..d0db987 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable-4k.h @@ -27,9 +27,6 @@ #define PMD_SIZE (1UL << PMD_SHIFT) #define PMD_MASK (~(PMD_SIZE-1)) -/* With 4k base page size, hugepage PTEs go at the PMD level */ -#define MIN_HUGEPTE_SHIFT PMD_SHIFT - /* PUD_SHIFT determines what a third-level page table entry can map */ #define PUD_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE) #define PUD_SIZE (1UL << PUD_SHIFT) diff --git a/arch/powerpc/include/asm/nohash/64/pgtable-64k.h b/arch/powerpc/include/asm/nohash/64/pgtable-64k.h index 9083245..55b28ef 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable-64k.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable-64k.h @@ -31,9 +31,6 @@ #define PTRS_PER_PMD (1 << PMD_INDEX_SIZE) #define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) -/* With 4k base page size, hugepage PTEs go at the PMD level */ -#define MIN_HUGEPTE_SHIFT PAGE_SHIFT - /* PMD_SHIFT determines what a second-level page table entry can map */ #define PMD_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) #define PMD_SIZE (1UL << PMD_SHIFT) diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index 653a183..c7f927e 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -26,15 +26,11 @@ #else #define PMD_CACHE_INDEX PMD_INDEX_SIZE #endif + /* * Define the address range of the kernel non-linear virtual area */ - -#ifdef CONFIG_PPC_BOOK3E #define KERN_VIRT_START ASM_CONST(0x8000000000000000) -#else -#define KERN_VIRT_START ASM_CONST(0xD000000000000000) -#endif #define KERN_VIRT_SIZE ASM_CONST(0x0000100000000000) /* @@ -43,11 +39,7 @@ * (we keep a quarter for the virtual memmap) */ #define VMALLOC_START KERN_VIRT_START -#ifdef CONFIG_PPC_BOOK3E #define VMALLOC_SIZE (KERN_VIRT_SIZE >> 2) -#else -#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1) -#endif #define VMALLOC_END (VMALLOC_START + VMALLOC_SIZE) /* @@ -85,12 +77,8 @@ * Defines the address of the vmemap area, in its own region on * hash table CPUs and after the vmalloc space on Book3E */ -#ifdef CONFIG_PPC_BOOK3E #define VMEMMAP_BASE VMALLOC_END #define VMEMMAP_END KERN_IO_START -#else -#define VMEMMAP_BASE (VMEMMAP_REGION_ID << REGION_SHIFT) -#endif #define vmemmap ((struct page *)VMEMMAP_BASE) @@ -301,7 +289,8 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, * function doesn't need to flush the hash entry */ static inline void __ptep_set_access_flags(struct mm_struct *mm, - pte_t *ptep, pte_t entry) + pte_t *ptep, pte_t entry, + unsigned long address) { unsigned long bits = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); @@ -358,8 +347,6 @@ static inline void __ptep_set_access_flags(struct mm_struct *mm, #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) }) #define __swp_entry_to_pte(x) __pte((x).val) -void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); -void pgtable_cache_init(void); extern int map_kernel_page(unsigned long ea, unsigned long pa, unsigned long flags); extern int __meminit vmemmap_create_mapping(unsigned long start, diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index 1263c22..1728497 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -226,7 +226,11 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, #ifdef CONFIG_HUGETLB_PAGE static inline int hugepd_ok(hugepd_t hpd) { +#ifdef CONFIG_PPC_8xx + return ((hpd.pd & 0x4) != 0); +#else return (hpd.pd > 0); +#endif } static inline int pmd_huge(pmd_t pmd) diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index 9bd87f2..dd01212 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -78,6 +78,8 @@ static inline pte_t *find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea, unsigned long vmalloc_to_phys(void *vmalloc_addr); +void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); +void pgtable_cache_init(void); #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_PGTABLE_H */ diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h index 1b39424..0bcc75e 100644 --- a/arch/powerpc/include/asm/plpar_wrappers.h +++ b/arch/powerpc/include/asm/plpar_wrappers.h @@ -93,38 +93,6 @@ static inline long register_dtl(unsigned long cpu, unsigned long vpa) return vpa_call(H_VPA_REG_DTL, cpu, vpa); } -static inline long plpar_page_set_loaned(unsigned long vpa) -{ - unsigned long cmo_page_sz = cmo_get_page_size(); - long rc = 0; - int i; - - for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz) - rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0); - - for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz) - plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, - vpa + i - cmo_page_sz, 0); - - return rc; -} - -static inline long plpar_page_set_active(unsigned long vpa) -{ - unsigned long cmo_page_sz = cmo_get_page_size(); - long rc = 0; - int i; - - for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz) - rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0); - - for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz) - plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, - vpa + i - cmo_page_sz, 0); - - return rc; -} - extern void vpa_init(int cpu); static inline long plpar_pte_enter(unsigned long flags, @@ -340,4 +308,9 @@ static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawr return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0); } +static inline long plapr_signal_sys_reset(long cpu) +{ + return plpar_hcall_norets(H_SIGNAL_SYS_RESET, cpu); +} + #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */ diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h index 0f73de0..7262880 100644 --- a/arch/powerpc/include/asm/ppc-pci.h +++ b/arch/powerpc/include/asm/ppc-pci.h @@ -53,7 +53,7 @@ void eeh_addr_cache_rmv_dev(struct pci_dev *dev); struct eeh_dev *eeh_addr_cache_get_dev(unsigned long addr); void eeh_slot_error_detail(struct eeh_pe *pe, int severity); int eeh_pci_enable(struct eeh_pe *pe, int function); -int eeh_reset_pe(struct eeh_pe *); +int eeh_pe_reset_full(struct eeh_pe *pe); void eeh_save_bars(struct eeh_dev *edev); int rtas_write_config(struct pci_dn *, int where, int size, u32 val); int rtas_read_config(struct pci_dn *, int where, int size, u32 *val); diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index c73750b..025833b 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -10,9 +10,7 @@ #include <asm/ppc-opcode.h> #include <asm/firmware.h> -#ifndef __ASSEMBLY__ -#error __FILE__ should only be used in assembler files -#else +#ifdef __ASSEMBLY__ #define SZL (BITS_PER_LONG/8) @@ -265,10 +263,14 @@ n: * latter is for those that incdentially must be excluded from probing * and allows them to be linked at more optimal location within text. */ +#ifdef CONFIG_KPROBES #define _ASM_NOKPROBE_SYMBOL(entry) \ .pushsection "_kprobe_blacklist","aw"; \ PPC_LONG (entry) ; \ .popsection +#else +#define _ASM_NOKPROBE_SYMBOL(entry) +#endif #define FUNC_START(name) _GLOBAL(name) #define FUNC_END(name) @@ -779,5 +781,17 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601) .long 0xa6037b7d; /* mtsrr1 r11 */ \ .long 0x2400004c /* rfid */ #endif /* !CONFIG_PPC_BOOK3E */ + #endif /* __ASSEMBLY__ */ + +/* + * Helper macro for exception table entries + */ +#define EX_TABLE(_fault, _target) \ + stringify_in_c(.section __ex_table,"a";)\ + stringify_in_c(.balign 4;) \ + stringify_in_c(.long (_fault) - . ;) \ + stringify_in_c(.long (_target) - . ;) \ + stringify_in_c(.previous) + #endif /* _ASM_POWERPC_PPC_ASM_H */ diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index dac83fc..1ba8144 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -312,8 +312,6 @@ struct thread_struct { unsigned long mmcr2; unsigned mmcr0; unsigned used_ebb; - unsigned long lmrr; - unsigned long lmser; #endif }; diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index 7f436ba..5e57705 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -159,11 +159,5 @@ struct of_drconf_cell { /* Option Vector 6: IBM PAPR hints */ #define OV6_LINUX 0x02 /* Linux is our OS */ -/* - * The architecture vector has an array of PVR mask/value pairs, - * followed by # option vectors - 1, followed by the option vectors. - */ -extern unsigned char ibm_architecture_vec[]; - #endif /* __KERNEL__ */ #endif /* _POWERPC_PROM_H */ diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 04aa1ee..0d4531a 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -295,8 +295,6 @@ #define SPRN_HRMOR 0x139 /* Real mode offset register */ #define SPRN_HSRR0 0x13A /* Hypervisor Save/Restore 0 */ #define SPRN_HSRR1 0x13B /* Hypervisor Save/Restore 1 */ -#define SPRN_LMRR 0x32D /* Load Monitor Region Register */ -#define SPRN_LMSER 0x32E /* Load Monitor Section Enable Register */ #define SPRN_ASDR 0x330 /* Access segment descriptor register */ #define SPRN_IC 0x350 /* Virtual Instruction Count */ #define SPRN_VTB 0x351 /* Virtual Time Base */ @@ -308,7 +306,6 @@ #define SPRN_PMCR 0x374 /* Power Management Control Register */ /* HFSCR and FSCR bit numbers are the same */ -#define FSCR_LM_LG 11 /* Enable Load Monitor Registers */ #define FSCR_MSGP_LG 10 /* Enable MSGP */ #define FSCR_TAR_LG 8 /* Enable Target Address Register */ #define FSCR_EBB_LG 7 /* Enable Event Based Branching */ @@ -319,12 +316,10 @@ #define FSCR_VECVSX_LG 1 /* Enable VMX/VSX */ #define FSCR_FP_LG 0 /* Enable Floating Point */ #define SPRN_FSCR 0x099 /* Facility Status & Control Register */ -#define FSCR_LM __MASK(FSCR_LM_LG) #define FSCR_TAR __MASK(FSCR_TAR_LG) #define FSCR_EBB __MASK(FSCR_EBB_LG) #define FSCR_DSCR __MASK(FSCR_DSCR_LG) #define SPRN_HFSCR 0xbe /* HV=1 Facility Status & Control Register */ -#define HFSCR_LM __MASK(FSCR_LM_LG) #define HFSCR_MSGP __MASK(FSCR_MSGP_LG) #define HFSCR_TAR __MASK(FSCR_TAR_LG) #define HFSCR_EBB __MASK(FSCR_EBB_LG) diff --git a/arch/powerpc/include/asm/reg_8xx.h b/arch/powerpc/include/asm/reg_8xx.h index 0197e12..1f16361 100644 --- a/arch/powerpc/include/asm/reg_8xx.h +++ b/arch/powerpc/include/asm/reg_8xx.h @@ -4,7 +4,7 @@ #ifndef _ASM_POWERPC_REG_8xx_H #define _ASM_POWERPC_REG_8xx_H -#include <asm/mmu-8xx.h> +#include <asm/mmu.h> /* Cache control on the MPC8xx is provided through some additional * special purpose registers. diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index 0d02c11..32db16d 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -176,7 +176,7 @@ static inline void set_hard_smp_processor_id(int cpu, int phys) #endif /* !CONFIG_SMP */ #endif /* !CONFIG_PPC64 */ -#if defined(CONFIG_PPC64) && (defined(CONFIG_SMP) || defined(CONFIG_KEXEC)) +#if defined(CONFIG_PPC64) && (defined(CONFIG_SMP) || defined(CONFIG_KEXEC_CORE)) extern void smp_release_cpus(void); #else static inline void smp_release_cpus(void) { }; diff --git a/arch/powerpc/include/asm/stackprotector.h b/arch/powerpc/include/asm/stackprotector.h new file mode 100644 index 0000000..6720190 --- /dev/null +++ b/arch/powerpc/include/asm/stackprotector.h @@ -0,0 +1,40 @@ +/* + * GCC stack protector support. + * + * Stack protector works by putting predefined pattern at the start of + * the stack frame and verifying that it hasn't been overwritten when + * returning from the function. The pattern is called stack canary + * and gcc expects it to be defined by a global variable called + * "__stack_chk_guard" on PPC. This unfortunately means that on SMP + * we cannot have a different canary value per task. + */ + +#ifndef _ASM_STACKPROTECTOR_H +#define _ASM_STACKPROTECTOR_H + +#include <linux/random.h> +#include <linux/version.h> +#include <asm/reg.h> + +extern unsigned long __stack_chk_guard; + +/* + * Initialize the stackprotector canary value. + * + * NOTE: this must only be called from functions that never return, + * and it must always be inlined. + */ +static __always_inline void boot_init_stack_canary(void) +{ + unsigned long canary; + + /* Try to get a semi random initial value. */ + get_random_bytes(&canary, sizeof(canary)); + canary ^= mftb(); + canary ^= LINUX_VERSION_CODE; + + current->stack_canary = canary; + __stack_chk_guard = current->stack_canary; +} + +#endif /* _ASM_STACKPROTECTOR_H */ diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h index 2fc5d4d..4b369d8 100644 --- a/arch/powerpc/include/asm/systbl.h +++ b/arch/powerpc/include/asm/systbl.h @@ -386,3 +386,4 @@ SYSCALL(mlock2) SYSCALL(copy_file_range) COMPAT_SYS_SPU(preadv2) COMPAT_SYS_SPU(pwritev2) +SYSCALL(kexec_file_load) diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index c266227..a15d84d 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -7,6 +7,7 @@ #include <linux/sched.h> #include <linux/errno.h> #include <asm/asm-compat.h> +#include <asm/ppc_asm.h> #include <asm/processor.h> #include <asm/page.h> @@ -63,23 +64,30 @@ __access_ok((__force unsigned long)(addr), (size), get_fs())) /* - * The exception table consists of pairs of addresses: the first is the - * address of an instruction that is allowed to fault, and the second is + * The exception table consists of pairs of relative addresses: the first is + * the address of an instruction that is allowed to fault, and the second is * the address at which the program should continue. No registers are - * modified, so it is entirely up to the continuation code to figure out - * what to do. + * modified, so it is entirely up to the continuation code to figure out what + * to do. * - * All the routines below use bits of fixup code that are out of line - * with the main instruction path. This means when everything is well, - * we don't even have to jump over them. Further, they do not intrude - * on our cache or tlb entries. + * All the routines below use bits of fixup code that are out of line with the + * main instruction path. This means when everything is well, we don't even + * have to jump over them. Further, they do not intrude on our cache or tlb + * entries. */ +#define ARCH_HAS_RELATIVE_EXTABLE + struct exception_table_entry { - unsigned long insn; - unsigned long fixup; + int insn; + int fixup; }; +static inline unsigned long extable_fixup(const struct exception_table_entry *x) +{ + return (unsigned long)&x->fixup + x->fixup; +} + /* * These are the main single-value transfer routines. They automatically * use the right size if we just have the right pointer type. @@ -132,10 +140,7 @@ extern long __put_user_bad(void); "3: li %0,%3\n" \ " b 2b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,3b\n" \ - ".previous" \ + EX_TABLE(1b, 3b) \ : "=r" (err) \ : "r" (x), "b" (addr), "i" (-EFAULT), "0" (err)) @@ -152,11 +157,8 @@ extern long __put_user_bad(void); "4: li %0,%3\n" \ " b 3b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,4b\n" \ - PPC_LONG "2b,4b\n" \ - ".previous" \ + EX_TABLE(1b, 4b) \ + EX_TABLE(2b, 4b) \ : "=r" (err) \ : "r" (x), "b" (addr), "i" (-EFAULT), "0" (err)) #endif /* __powerpc64__ */ @@ -215,10 +217,7 @@ extern long __get_user_bad(void); " li %1,0\n" \ " b 2b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,3b\n" \ - ".previous" \ + EX_TABLE(1b, 3b) \ : "=r" (err), "=r" (x) \ : "b" (addr), "i" (-EFAULT), "0" (err)) @@ -237,11 +236,8 @@ extern long __get_user_bad(void); " li %1+1,0\n" \ " b 3b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,4b\n" \ - PPC_LONG "2b,4b\n" \ - ".previous" \ + EX_TABLE(1b, 4b) \ + EX_TABLE(2b, 4b) \ : "=r" (err), "=&r" (x) \ : "b" (addr), "i" (-EFAULT), "0" (err)) #endif /* __powerpc64__ */ diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index e8cdfec..eb1acee 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -12,7 +12,7 @@ #include <uapi/asm/unistd.h> -#define NR_syscalls 382 +#define NR_syscalls 383 #define __NR__exit __NR_exit diff --git a/arch/powerpc/include/asm/word-at-a-time.h b/arch/powerpc/include/asm/word-at-a-time.h index 4afe66a..f3f4710 100644 --- a/arch/powerpc/include/asm/word-at-a-time.h +++ b/arch/powerpc/include/asm/word-at-a-time.h @@ -7,6 +7,7 @@ #include <linux/kernel.h> #include <asm/asm-compat.h> +#include <asm/ppc_asm.h> #ifdef __BIG_ENDIAN__ @@ -193,10 +194,7 @@ static inline unsigned long load_unaligned_zeropad(const void *addr) #endif "b 2b\n" ".previous\n" - ".section __ex_table,\"a\"\n\t" - PPC_LONG_ALIGN "\n\t" - PPC_LONG "1b,3b\n" - ".previous" + EX_TABLE(1b, 3b) : [tmp] "=&b" (tmp), [offset] "=&r" (offset), [ret] "=&r" (ret) : [addr] "b" (addr), "m" (*(unsigned long *)addr)); diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h index e9f5f41..2f26335 100644 --- a/arch/powerpc/include/uapi/asm/unistd.h +++ b/arch/powerpc/include/uapi/asm/unistd.h @@ -392,5 +392,6 @@ #define __NR_copy_file_range 379 #define __NR_preadv2 380 #define __NR_pwritev2 381 +#define __NR_kexec_file_load 382 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */ diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 1925341..a3a6047 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -19,6 +19,10 @@ CFLAGS_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_prom.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) +# -fstack-protector triggers protection checks in this code, +# but it is being used too early to link to meaningful stack_chk logic. +CFLAGS_prom_init.o += $(call cc-option, -fno-stack-protector) + ifdef CONFIG_FUNCTION_TRACER # Do not trace early boot code CFLAGS_REMOVE_cputable.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) @@ -58,8 +62,6 @@ obj-$(CONFIG_PPC_RTAS) += rtas.o rtas-rtc.o $(rtaspci-y-y) obj-$(CONFIG_PPC_RTAS_DAEMON) += rtasd.o obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o obj-$(CONFIG_RTAS_PROC) += rtas-proc.o -obj-$(CONFIG_IBMVIO) += vio.o -obj-$(CONFIG_IBMEBUS) += ibmebus.o obj-$(CONFIG_EEH) += eeh.o eeh_pe.o eeh_dev.o eeh_cache.o \ eeh_driver.o eeh_event.o eeh_sysfs.o obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o @@ -107,8 +109,9 @@ pci64-$(CONFIG_PPC64) += pci_dn.o pci-hotplug.o isa-bridge.o obj-$(CONFIG_PCI) += pci_$(BITS).o $(pci64-y) \ pci-common.o pci_of_scan.o obj-$(CONFIG_PCI_MSI) += msi.o -obj-$(CONFIG_KEXEC) += machine_kexec.o crash.o \ +obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o crash.o \ machine_kexec_$(BITS).o +obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file_$(BITS).o kexec_elf_$(BITS).o obj-$(CONFIG_AUDIT) += audit.o obj64-$(CONFIG_AUDIT) += compat_audit.o @@ -128,7 +131,7 @@ obj64-$(CONFIG_PPC_TRANSACTIONAL_MEM) += tm.o obj-$(CONFIG_PPC64) += $(obj64-y) obj-$(CONFIG_PPC32) += $(obj32-y) -ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC),) +ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC_CORE),) obj-y += ppc_save_regs.o endif diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 195a9fc..0601e6a 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -91,6 +91,9 @@ int main(void) DEFINE(TI_livepatch_sp, offsetof(struct thread_info, livepatch_sp)); #endif +#ifdef CONFIG_CC_STACKPROTECTOR + DEFINE(TSK_STACK_CANARY, offsetof(struct task_struct, stack_canary)); +#endif DEFINE(KSP, offsetof(struct thread_struct, ksp)); DEFINE(PT_REGS, offsetof(struct thread_struct, regs)); #ifdef CONFIG_BOOKE diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index f3e1f5d..9171886 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -96,6 +96,7 @@ _GLOBAL(__setup_cpu_power9) mtlr r11 beqlr li r0,0 + mtspr SPRN_PSSCR,r0 mtspr SPRN_LPID,r0 mfspr r3,SPRN_LPCR LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE) @@ -116,6 +117,7 @@ _GLOBAL(__restore_cpu_power9) mtlr r11 beqlr li r0,0 + mtspr SPRN_PSSCR,r0 mtspr SPRN_LPID,r0 mfspr r3,SPRN_LPCR LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE) diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index f257316..8180bfd 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -372,7 +372,7 @@ static int eeh_phb_check_failure(struct eeh_pe *pe) /* Find the PHB PE */ phb_pe = eeh_phb_pe_get(pe->phb); if (!phb_pe) { - pr_warn("%s Can't find PE for PHB#%d\n", + pr_warn("%s Can't find PE for PHB#%x\n", __func__, pe->phb->global_number); return -EEXIST; } @@ -664,7 +664,7 @@ int eeh_pci_enable(struct eeh_pe *pe, int function) rc = eeh_ops->set_option(pe, function); if (rc) pr_warn("%s: Unexpected state change %d on " - "PHB#%d-PE#%x, err=%d\n", + "PHB#%x-PE#%x, err=%d\n", __func__, function, pe->phb->global_number, pe->addr, rc); @@ -808,76 +808,67 @@ static void *eeh_set_dev_freset(void *data, void *flag) } /** - * eeh_reset_pe_once - Assert the pci #RST line for 1/4 second + * eeh_pe_reset_full - Complete a full reset process on the indicated PE * @pe: EEH PE * - * Assert the PCI #RST line for 1/4 second. + * This function executes a full reset procedure on a PE, including setting + * the appropriate flags, performing a fundamental or hot reset, and then + * deactivating the reset status. It is designed to be used within the EEH + * subsystem, as opposed to eeh_pe_reset which is exported to drivers and + * only performs a single operation at a time. + * + * This function will attempt to reset a PE three times before failing. */ -static void eeh_reset_pe_once(struct eeh_pe *pe) +int eeh_pe_reset_full(struct eeh_pe *pe) { + int active_flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE); + int reset_state = (EEH_PE_RESET | EEH_PE_CFG_BLOCKED); + int type = EEH_RESET_HOT; unsigned int freset = 0; + int i, state, ret; - /* Determine type of EEH reset required for - * Partitionable Endpoint, a hot-reset (1) - * or a fundamental reset (3). - * A fundamental reset required by any device under - * Partitionable Endpoint trumps hot-reset. + /* + * Determine the type of reset to perform - hot or fundamental. + * Hot reset is the default operation, unless any device under the + * PE requires a fundamental reset. */ eeh_pe_dev_traverse(pe, eeh_set_dev_freset, &freset); if (freset) - eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL); - else - eeh_ops->reset(pe, EEH_RESET_HOT); - - eeh_ops->reset(pe, EEH_RESET_DEACTIVATE); -} - -/** - * eeh_reset_pe - Reset the indicated PE - * @pe: EEH PE - * - * This routine should be called to reset indicated device, including - * PE. A PE might include multiple PCI devices and sometimes PCI bridges - * might be involved as well. - */ -int eeh_reset_pe(struct eeh_pe *pe) -{ - int flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE); - int i, state, ret; + type = EEH_RESET_FUNDAMENTAL; - /* Mark as reset and block config space */ - eeh_pe_state_mark(pe, EEH_PE_RESET | EEH_PE_CFG_BLOCKED); + /* Mark the PE as in reset state and block config space accesses */ + eeh_pe_state_mark(pe, reset_state); - /* Take three shots at resetting the bus */ + /* Make three attempts at resetting the bus */ for (i = 0; i < 3; i++) { - eeh_reset_pe_once(pe); + ret = eeh_pe_reset(pe, type); + if (ret) + break; - /* - * EEH_PE_ISOLATED is expected to be removed after - * BAR restore. - */ + ret = eeh_pe_reset(pe, EEH_RESET_DEACTIVATE); + if (ret) + break; + + /* Wait until the PE is in a functioning state */ state = eeh_ops->wait_state(pe, PCI_BUS_RESET_WAIT_MSEC); - if ((state & flags) == flags) { - ret = 0; - goto out; - } + if ((state & active_flags) == active_flags) + break; if (state < 0) { - pr_warn("%s: Unrecoverable slot failure on PHB#%d-PE#%x", + pr_warn("%s: Unrecoverable slot failure on PHB#%x-PE#%x", __func__, pe->phb->global_number, pe->addr); ret = -ENOTRECOVERABLE; - goto out; + break; } - /* We might run out of credits */ + /* Set error in case this is our last attempt */ ret = -EIO; pr_warn("%s: Failure %d resetting PHB#%x-PE#%x\n (%d)\n", __func__, state, pe->phb->global_number, pe->addr, (i + 1)); } -out: - eeh_pe_state_clear(pe, EEH_PE_RESET | EEH_PE_CFG_BLOCKED); + eeh_pe_state_clear(pe, reset_state); return ret; } @@ -1601,6 +1592,7 @@ static int eeh_pe_reenable_devices(struct eeh_pe *pe) return eeh_unfreeze_pe(pe, true); } + /** * eeh_pe_reset - Issue PE reset according to specified type * @pe: EEH PE diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index 5c31369..d88573b 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -588,7 +588,7 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe) eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL); /* Issue reset */ - ret = eeh_reset_pe(pe); + ret = eeh_pe_reset_full(pe); if (ret) { eeh_pe_state_clear(pe, EEH_PE_RECOVERING); return ret; @@ -659,7 +659,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus, * config accesses. So we prefer to block them. However, controlled * PCI config accesses initiated from EEH itself are allowed. */ - rc = eeh_reset_pe(pe); + rc = eeh_pe_reset_full(pe); if (rc) return rc; @@ -734,7 +734,7 @@ static void eeh_handle_normal_event(struct eeh_pe *pe) frozen_bus = eeh_pe_bus_get(pe); if (!frozen_bus) { - pr_err("%s: Cannot find PCI bus for PHB#%d-PE#%x\n", + pr_err("%s: Cannot find PCI bus for PHB#%x-PE#%x\n", __func__, pe->phb->global_number, pe->addr); return; } @@ -878,7 +878,7 @@ excess_failures: * are due to poorly seated PCI cards. Only 10% or so are * due to actual, failed cards. */ - pr_err("EEH: PHB#%d-PE#%x has failed %d times in the\n" + pr_err("EEH: PHB#%x-PE#%x has failed %d times in the\n" "last hour and has been permanently disabled.\n" "Please try reseating or replacing it.\n", pe->phb->global_number, pe->addr, @@ -886,7 +886,7 @@ excess_failures: goto perm_error; hard_fail: - pr_err("EEH: Unable to recover from failure from PHB#%d-PE#%x.\n" + pr_err("EEH: Unable to recover from failure from PHB#%x-PE#%x.\n" "Please try reseating or replacing it\n", pe->phb->global_number, pe->addr); @@ -1000,7 +1000,7 @@ static void eeh_handle_special_event(void) bus = eeh_pe_bus_get(phb_pe); if (!bus) { pr_err("%s: Cannot find PCI bus for " - "PHB#%d-PE#%x\n", + "PHB#%x-PE#%x\n", __func__, pe->phb->global_number, pe->addr); diff --git a/arch/powerpc/kernel/eeh_event.c b/arch/powerpc/kernel/eeh_event.c index 82e7327..accbf8b 100644 --- a/arch/powerpc/kernel/eeh_event.c +++ b/arch/powerpc/kernel/eeh_event.c @@ -75,11 +75,11 @@ static int eeh_event_handler(void * dummy) if (pe) { eeh_pe_state_mark(pe, EEH_PE_RECOVERING); if (pe->type & EEH_PE_PHB) - pr_info("EEH: Detected error on PHB#%d\n", + pr_info("EEH: Detected error on PHB#%x\n", pe->phb->global_number); else pr_info("EEH: Detected PCI bus error on " - "PHB#%d-PE#%x\n", + "PHB#%x-PE#%x\n", pe->phb->global_number, pe->addr); eeh_handle_event(pe); eeh_pe_state_clear(pe, EEH_PE_RECOVERING); diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index de7d091..cc4b206 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -104,7 +104,7 @@ int eeh_phb_pe_create(struct pci_controller *phb) /* Put it into the list */ list_add_tail(&pe->child, &eeh_phb_pe); - pr_debug("EEH: Add PE for PHB#%d\n", phb->global_number); + pr_debug("EEH: Add PE for PHB#%x\n", phb->global_number); return 0; } @@ -333,7 +333,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev) /* Check if the PE number is valid */ if (!eeh_has_flag(EEH_VALID_PE_ZERO) && !edev->pe_config_addr) { - pr_err("%s: Invalid PE#0 for edev 0x%x on PHB#%d\n", + pr_err("%s: Invalid PE#0 for edev 0x%x on PHB#%x\n", __func__, edev->config_addr, edev->phb->global_number); return -EINVAL; } diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 3841d74..5742dbd 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -674,7 +674,11 @@ BEGIN_FTR_SECTION mtspr SPRN_SPEFSCR,r0 /* restore SPEFSCR reg */ END_FTR_SECTION_IFSET(CPU_FTR_SPE) #endif /* CONFIG_SPE */ - +#if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP) + lwz r0,TSK_STACK_CANARY(r2) + lis r4,__stack_chk_guard@ha + stw r0,__stack_chk_guard@l(r4) +#endif lwz r0,_CCR(r1) mtcrf 0xFF,r0 /* r3-r12 are destroyed -- Cort */ diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 38a1f96..45b453e 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -923,10 +923,10 @@ kernel_dbg_exc: PROLOG_ADDITION_NONE) EXCEPTION_COMMON(0x340) addi r3,r1,STACK_FRAME_OVERHEAD - bl .save_nvgprs + bl save_nvgprs INTS_RESTORE_HARD - bl .unknown_exception - b .ret_from_except + bl unknown_exception + b ret_from_except /* * An interrupt came in while soft-disabled; We mark paca->irq_happened diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 1ba82ea..d39d611 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1408,7 +1408,7 @@ USE_TEXT_SECTION() /* * Hash table stuff */ - .align 7 + .balign IFETCH_ALIGN_BYTES do_hash_page: #ifdef CONFIG_PPC_STD_MMU_64 andis. r0,r4,0xa410 /* weird error? */ diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c index a95639b..5c9f50c 100644 --- a/arch/powerpc/kernel/ftrace.c +++ b/arch/powerpc/kernel/ftrace.c @@ -47,13 +47,11 @@ ftrace_modify_code(unsigned long ip, unsigned int old, unsigned int new) unsigned int replaced; /* - * Note: Due to modules and __init, code can - * disappear and change, we need to protect against faulting - * as well as code changing. We do this by using the - * probe_kernel_* functions. - * - * No real locking needed, this code is run through - * kstop_machine, or before SMP starts. + * Note: + * We are paranoid about modifying text, as if a bug was to happen, it + * could cause us to read or write to someplace that could cause harm. + * Carefully read and modify the code with probe_kernel_*(), and make + * sure what we read is what we expected it to be before modifying it. */ /* read the text we want to modify */ diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 04c546e..1dc5eae 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -107,12 +107,19 @@ __secondary_hold_acknowledge: * crash_kernel region. The loader is responsible for * observing the alignment requirement. */ + +#ifdef CONFIG_RELOCATABLE_TEST +#define RUN_AT_LOAD_DEFAULT 1 /* Test relocation, do not copy to 0 */ +#else +#define RUN_AT_LOAD_DEFAULT 0x72756e30 /* "run0" -- relocate to 0 by default */ +#endif + /* Do not move this variable as kexec-tools knows about it. */ . = 0x5c .globl __run_at_load __run_at_load: DEFINE_FIXED_SYMBOL(__run_at_load) - .long 0x72756e30 /* "run0" -- relocate to 0 by default */ + .long RUN_AT_LOAD_DEFAULT #endif . = 0x60 @@ -153,7 +160,7 @@ __secondary_hold: cmpdi 0,r12,0 beq 100b -#if defined(CONFIG_SMP) || defined(CONFIG_KEXEC) +#if defined(CONFIG_SMP) || defined(CONFIG_KEXEC_CORE) #ifdef CONFIG_PPC_BOOK3E tovirt(r12,r12) #endif @@ -214,9 +221,9 @@ booting_thread_hwid: */ _GLOBAL(book3e_start_thread) LOAD_REG_IMMEDIATE(r5, MSR_KERNEL) - cmpi 0, r3, 0 + cmpwi r3, 0 beq 10f - cmpi 0, r3, 1 + cmpwi r3, 1 beq 11f /* If the thread id is invalid, just exit. */ b 13f @@ -241,9 +248,9 @@ _GLOBAL(book3e_start_thread) * r3 = the thread physical id */ _GLOBAL(book3e_stop_thread) - cmpi 0, r3, 0 + cmpwi r3, 0 beq 10f - cmpi 0, r3, 1 + cmpwi r3, 1 beq 10f /* If the thread id is invalid, just exit. */ b 13f diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index fb133a1..1a9c99d 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -73,6 +73,9 @@ #define RPN_PATTERN 0x00f0 #endif +#define PAGE_SHIFT_512K 19 +#define PAGE_SHIFT_8M 23 + __HEAD _ENTRY(_stext); _ENTRY(_start); @@ -322,7 +325,7 @@ SystemCall: #endif InstructionTLBMiss: -#if defined(CONFIG_8xx_CPU6) || defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) +#if defined(CONFIG_8xx_CPU6) || defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) || defined (CONFIG_HUGETLB_PAGE) mtspr SPRN_SPRG_SCRATCH2, r3 #endif EXCEPTION_PROLOG_0 @@ -332,10 +335,12 @@ InstructionTLBMiss: */ mfspr r10, SPRN_SRR0 /* Get effective address of fault */ INVALIDATE_ADJACENT_PAGES_CPU15(r11, r10) -#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) /* Only modules will cause ITLB Misses as we always * pin the first 8MB of kernel memory */ +#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) || defined (CONFIG_HUGETLB_PAGE) mfcr r3 +#endif +#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) IS_KERNEL(r11, r10) #endif mfspr r11, SPRN_M_TW /* Get level 1 table */ @@ -343,7 +348,6 @@ InstructionTLBMiss: BRANCH_UNLESS_KERNEL(3f) lis r11, (swapper_pg_dir-PAGE_OFFSET)@ha 3: - mtcr r3 #endif /* Insert level 1 index */ rlwimi r11, r10, 32 - ((PAGE_SHIFT - 2) << 1), (PAGE_SHIFT - 2) << 1, 29 @@ -351,14 +355,25 @@ InstructionTLBMiss: /* Extract level 2 index */ rlwinm r10, r10, 32 - (PAGE_SHIFT - 2), 32 - PAGE_SHIFT, 29 +#ifdef CONFIG_HUGETLB_PAGE + mtcr r11 + bt- 28, 10f /* bit 28 = Large page (8M) */ + bt- 29, 20f /* bit 29 = Large page (8M or 512k) */ +#endif rlwimi r10, r11, 0, 0, 32 - PAGE_SHIFT - 1 /* Add level 2 base */ lwz r10, 0(r10) /* Get the pte */ - +4: +#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) || defined (CONFIG_HUGETLB_PAGE) + mtcr r3 +#endif /* Insert the APG into the TWC from the Linux PTE. */ rlwimi r11, r10, 0, 25, 26 /* Load the MI_TWC with the attributes for this "segment." */ MTSPR_CPU6(SPRN_MI_TWC, r11, r3) /* Set segment attributes */ +#if defined (CONFIG_HUGETLB_PAGE) && defined (CONFIG_PPC_4K_PAGES) + rlwimi r10, r11, 1, MI_SPS16K +#endif #ifdef CONFIG_SWAP rlwinm r11, r10, 32-5, _PAGE_PRESENT and r11, r11, r10 @@ -371,16 +386,45 @@ InstructionTLBMiss: * set. All other Linux PTE bits control the behavior * of the MMU. */ +#if defined (CONFIG_HUGETLB_PAGE) && defined (CONFIG_PPC_4K_PAGES) + rlwimi r10, r11, 0, 0x0ff0 /* Set 24-27, clear 20-23 */ +#else rlwimi r10, r11, 0, 0x0ff8 /* Set 24-27, clear 20-23,28 */ +#endif MTSPR_CPU6(SPRN_MI_RPN, r10, r3) /* Update TLB entry */ /* Restore registers */ -#if defined(CONFIG_8xx_CPU6) || defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) +#if defined(CONFIG_8xx_CPU6) || defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC) || defined (CONFIG_HUGETLB_PAGE) mfspr r3, SPRN_SPRG_SCRATCH2 #endif EXCEPTION_EPILOG_0 rfi +#ifdef CONFIG_HUGETLB_PAGE +10: /* 8M pages */ +#ifdef CONFIG_PPC_16K_PAGES + /* Extract level 2 index */ + rlwinm r10, r10, 32 - (PAGE_SHIFT_8M - PAGE_SHIFT), 32 + PAGE_SHIFT_8M - (PAGE_SHIFT << 1), 29 + /* Add level 2 base */ + rlwimi r10, r11, 0, 0, 32 + PAGE_SHIFT_8M - (PAGE_SHIFT << 1) - 1 +#else + /* Level 2 base */ + rlwinm r10, r11, 0, ~HUGEPD_SHIFT_MASK +#endif + lwz r10, 0(r10) /* Get the pte */ + rlwinm r11, r11, 0, 0xf + b 4b + +20: /* 512k pages */ + /* Extract level 2 index */ + rlwinm r10, r10, 32 - (PAGE_SHIFT_512K - PAGE_SHIFT), 32 + PAGE_SHIFT_512K - (PAGE_SHIFT << 1), 29 + /* Add level 2 base */ + rlwimi r10, r11, 0, 0, 32 + PAGE_SHIFT_512K - (PAGE_SHIFT << 1) - 1 + lwz r10, 0(r10) /* Get the pte */ + rlwinm r11, r11, 0, 0xf + b 4b +#endif + . = 0x1200 DataStoreTLBMiss: mtspr SPRN_SPRG_SCRATCH2, r3 @@ -407,7 +451,6 @@ _ENTRY(DTLBMiss_jmp) #endif blt cr7, DTLBMissLinear 3: - mtcr r3 mfspr r10, SPRN_MD_EPN /* Insert level 1 index */ @@ -418,8 +461,15 @@ _ENTRY(DTLBMiss_jmp) */ /* Extract level 2 index */ rlwinm r10, r10, 32 - (PAGE_SHIFT - 2), 32 - PAGE_SHIFT, 29 +#ifdef CONFIG_HUGETLB_PAGE + mtcr r11 + bt- 28, 10f /* bit 28 = Large page (8M) */ + bt- 29, 20f /* bit 29 = Large page (8M or 512k) */ +#endif rlwimi r10, r11, 0, 0, 32 - PAGE_SHIFT - 1 /* Add level 2 base */ lwz r10, 0(r10) /* Get the pte */ +4: + mtcr r3 /* Insert the Guarded flag and APG into the TWC from the Linux PTE. * It is bit 26-27 of both the Linux PTE and the TWC (at least @@ -434,6 +484,11 @@ _ENTRY(DTLBMiss_jmp) rlwimi r11, r10, 32-5, 30, 30 MTSPR_CPU6(SPRN_MD_TWC, r11, r3) + /* In 4k pages mode, SPS (bit 28) in RPN must match PS[1] (bit 29) + * In 16k pages mode, SPS is always 1 */ +#if defined (CONFIG_HUGETLB_PAGE) && defined (CONFIG_PPC_4K_PAGES) + rlwimi r10, r11, 1, MD_SPS16K +#endif /* Both _PAGE_ACCESSED and _PAGE_PRESENT has to be set. * We also need to know if the insn is a load/store, so: * Clear _PAGE_PRESENT and load that which will @@ -455,7 +510,11 @@ _ENTRY(DTLBMiss_jmp) * of the MMU. */ li r11, RPN_PATTERN +#if defined (CONFIG_HUGETLB_PAGE) && defined (CONFIG_PPC_4K_PAGES) + rlwimi r10, r11, 0, 24, 27 /* Set 24-27 */ +#else rlwimi r10, r11, 0, 24, 28 /* Set 24-27, clear 28 */ +#endif rlwimi r10, r11, 0, 20, 20 /* clear 20 */ MTSPR_CPU6(SPRN_MD_RPN, r10, r3) /* Update TLB entry */ @@ -465,6 +524,30 @@ _ENTRY(DTLBMiss_jmp) EXCEPTION_EPILOG_0 rfi +#ifdef CONFIG_HUGETLB_PAGE +10: /* 8M pages */ + /* Extract level 2 index */ +#ifdef CONFIG_PPC_16K_PAGES + rlwinm r10, r10, 32 - (PAGE_SHIFT_8M - PAGE_SHIFT), 32 + PAGE_SHIFT_8M - (PAGE_SHIFT << 1), 29 + /* Add level 2 base */ + rlwimi r10, r11, 0, 0, 32 + PAGE_SHIFT_8M - (PAGE_SHIFT << 1) - 1 +#else + /* Level 2 base */ + rlwinm r10, r11, 0, ~HUGEPD_SHIFT_MASK +#endif + lwz r10, 0(r10) /* Get the pte */ + rlwinm r11, r11, 0, 0xf + b 4b + +20: /* 512k pages */ + /* Extract level 2 index */ + rlwinm r10, r10, 32 - (PAGE_SHIFT_512K - PAGE_SHIFT), 32 + PAGE_SHIFT_512K - (PAGE_SHIFT << 1), 29 + /* Add level 2 base */ + rlwimi r10, r11, 0, 0, 32 + PAGE_SHIFT_512K - (PAGE_SHIFT << 1) - 1 + lwz r10, 0(r10) /* Get the pte */ + rlwinm r11, r11, 0, 0xf + b 4b +#endif /* This is an instruction TLB error on the MPC8xx. This could be due * to many reasons, such as executing guarded memory or illegal instruction @@ -586,6 +669,9 @@ _ENTRY(FixupDAR_cmp) /* Insert level 1 index */ 3: rlwimi r11, r10, 32 - ((PAGE_SHIFT - 2) << 1), (PAGE_SHIFT - 2) << 1, 29 lwz r11, (swapper_pg_dir-PAGE_OFFSET)@l(r11) /* Get the level 1 entry */ + mtcr r11 + bt 28,200f /* bit 28 = Large page (8M) */ + bt 29,202f /* bit 29 = Large page (8M or 512K) */ rlwinm r11, r11,0,0,19 /* Extract page descriptor page address */ /* Insert level 2 index */ rlwimi r11, r10, 32 - (PAGE_SHIFT - 2), 32 - PAGE_SHIFT, 29 @@ -611,6 +697,27 @@ _ENTRY(FixupDAR_cmp) 141: mfspr r10,SPRN_SPRG_SCRATCH2 b DARFixed /* Nope, go back to normal TLB processing */ + /* concat physical page address(r11) and page offset(r10) */ +200: +#ifdef CONFIG_PPC_16K_PAGES + rlwinm r11, r11, 0, 0, 32 + PAGE_SHIFT_8M - (PAGE_SHIFT << 1) - 1 + rlwimi r11, r10, 32 - (PAGE_SHIFT_8M - 2), 32 + PAGE_SHIFT_8M - (PAGE_SHIFT << 1), 29 +#else + rlwinm r11, r10, 0, ~HUGEPD_SHIFT_MASK +#endif + lwz r11, 0(r11) /* Get the pte */ + /* concat physical page address(r11) and page offset(r10) */ + rlwimi r11, r10, 0, 32 - PAGE_SHIFT_8M, 31 + b 201b + +202: + rlwinm r11, r11, 0, 0, 32 + PAGE_SHIFT_512K - (PAGE_SHIFT << 1) - 1 + rlwimi r11, r10, 32 - (PAGE_SHIFT_512K - 2), 32 + PAGE_SHIFT_512K - (PAGE_SHIFT << 1), 29 + lwz r11, 0(r11) /* Get the pte */ + /* concat physical page address(r11) and page offset(r10) */ + rlwimi r11, r10, 0, 32 - PAGE_SHIFT_512K, 31 + b 201b + 144: mfspr r10, SPRN_DSISR rlwinm r10, r10,0,7,5 /* Clear store bit for buggy dcbst insn */ mtspr SPRN_DSISR, r10 diff --git a/arch/powerpc/kernel/kexec_elf_64.c b/arch/powerpc/kernel/kexec_elf_64.c new file mode 100644 index 0000000..6acffd3 --- /dev/null +++ b/arch/powerpc/kernel/kexec_elf_64.c @@ -0,0 +1,663 @@ +/* + * Load ELF vmlinux file for the kexec_file_load syscall. + * + * Copyright (C) 2004 Adam Litke (agl@us.ibm.com) + * Copyright (C) 2004 IBM Corp. + * Copyright (C) 2005 R Sharada (sharada@in.ibm.com) + * Copyright (C) 2006 Mohan Kumar M (mohan@in.ibm.com) + * Copyright (C) 2016 IBM Corporation + * + * Based on kexec-tools' kexec-elf-exec.c and kexec-elf-ppc64.c. + * Heavily modified for the kernel by + * Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation (version 2 of the License). + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define pr_fmt(fmt) "kexec_elf: " fmt + +#include <linux/elf.h> +#include <linux/kexec.h> +#include <linux/libfdt.h> +#include <linux/module.h> +#include <linux/of_fdt.h> +#include <linux/slab.h> +#include <linux/types.h> + +#define PURGATORY_STACK_SIZE (16 * 1024) + +#define elf_addr_to_cpu elf64_to_cpu + +#ifndef Elf_Rel +#define Elf_Rel Elf64_Rel +#endif /* Elf_Rel */ + +struct elf_info { + /* + * Where the ELF binary contents are kept. + * Memory managed by the user of the struct. + */ + const char *buffer; + + const struct elfhdr *ehdr; + const struct elf_phdr *proghdrs; + struct elf_shdr *sechdrs; +}; + +static inline bool elf_is_elf_file(const struct elfhdr *ehdr) +{ + return memcmp(ehdr->e_ident, ELFMAG, SELFMAG) == 0; +} + +static uint64_t elf64_to_cpu(const struct elfhdr *ehdr, uint64_t value) +{ + if (ehdr->e_ident[EI_DATA] == ELFDATA2LSB) + value = le64_to_cpu(value); + else if (ehdr->e_ident[EI_DATA] == ELFDATA2MSB) + value = be64_to_cpu(value); + + return value; +} + +static uint16_t elf16_to_cpu(const struct elfhdr *ehdr, uint16_t value) +{ + if (ehdr->e_ident[EI_DATA] == ELFDATA2LSB) + value = le16_to_cpu(value); + else if (ehdr->e_ident[EI_DATA] == ELFDATA2MSB) + value = be16_to_cpu(value); + + return value; +} + +static uint32_t elf32_to_cpu(const struct elfhdr *ehdr, uint32_t value) +{ + if (ehdr->e_ident[EI_DATA] == ELFDATA2LSB) + value = le32_to_cpu(value); + else if (ehdr->e_ident[EI_DATA] == ELFDATA2MSB) + value = be32_to_cpu(value); + + return value; +} + +/** + * elf_is_ehdr_sane - check that it is safe to use the ELF header + * @buf_len: size of the buffer in which the ELF file is loaded. + */ +static bool elf_is_ehdr_sane(const struct elfhdr *ehdr, size_t buf_len) +{ + if (ehdr->e_phnum > 0 && ehdr->e_phentsize != sizeof(struct elf_phdr)) { + pr_debug("Bad program header size.\n"); + return false; + } else if (ehdr->e_shnum > 0 && + ehdr->e_shentsize != sizeof(struct elf_shdr)) { + pr_debug("Bad section header size.\n"); + return false; + } else if (ehdr->e_ident[EI_VERSION] != EV_CURRENT || + ehdr->e_version != EV_CURRENT) { + pr_debug("Unknown ELF version.\n"); + return false; + } + + if (ehdr->e_phoff > 0 && ehdr->e_phnum > 0) { + size_t phdr_size; + + /* + * e_phnum is at most 65535 so calculating the size of the + * program header cannot overflow. + */ + phdr_size = sizeof(struct elf_phdr) * ehdr->e_phnum; + + /* Sanity check the program header table location. */ + if (ehdr->e_phoff + phdr_size < ehdr->e_phoff) { + pr_debug("Program headers at invalid location.\n"); + return false; + } else if (ehdr->e_phoff + phdr_size > buf_len) { + pr_debug("Program headers truncated.\n"); + return false; + } + } + + if (ehdr->e_shoff > 0 && ehdr->e_shnum > 0) { + size_t shdr_size; + + /* + * e_shnum is at most 65536 so calculating + * the size of the section header cannot overflow. + */ + shdr_size = sizeof(struct elf_shdr) * ehdr->e_shnum; + + /* Sanity check the section header table location. */ + if (ehdr->e_shoff + shdr_size < ehdr->e_shoff) { + pr_debug("Section headers at invalid location.\n"); + return false; + } else if (ehdr->e_shoff + shdr_size > buf_len) { + pr_debug("Section headers truncated.\n"); + return false; + } + } + + return true; +} + +static int elf_read_ehdr(const char *buf, size_t len, struct elfhdr *ehdr) +{ + struct elfhdr *buf_ehdr; + + if (len < sizeof(*buf_ehdr)) { + pr_debug("Buffer is too small to hold ELF header.\n"); + return -ENOEXEC; + } + + memset(ehdr, 0, sizeof(*ehdr)); + memcpy(ehdr->e_ident, buf, sizeof(ehdr->e_ident)); + if (!elf_is_elf_file(ehdr)) { + pr_debug("No ELF header magic.\n"); + return -ENOEXEC; + } + + if (ehdr->e_ident[EI_CLASS] != ELF_CLASS) { + pr_debug("Not a supported ELF class.\n"); + return -ENOEXEC; + } else if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB && + ehdr->e_ident[EI_DATA] != ELFDATA2MSB) { + pr_debug("Not a supported ELF data format.\n"); + return -ENOEXEC; + } + + buf_ehdr = (struct elfhdr *) buf; + if (elf16_to_cpu(ehdr, buf_ehdr->e_ehsize) != sizeof(*buf_ehdr)) { + pr_debug("Bad ELF header size.\n"); + return -ENOEXEC; + } + + ehdr->e_type = elf16_to_cpu(ehdr, buf_ehdr->e_type); + ehdr->e_machine = elf16_to_cpu(ehdr, buf_ehdr->e_machine); + ehdr->e_version = elf32_to_cpu(ehdr, buf_ehdr->e_version); + ehdr->e_entry = elf_addr_to_cpu(ehdr, buf_ehdr->e_entry); + ehdr->e_phoff = elf_addr_to_cpu(ehdr, buf_ehdr->e_phoff); + ehdr->e_shoff = elf_addr_to_cpu(ehdr, buf_ehdr->e_shoff); + ehdr->e_flags = elf32_to_cpu(ehdr, buf_ehdr->e_flags); + ehdr->e_phentsize = elf16_to_cpu(ehdr, buf_ehdr->e_phentsize); + ehdr->e_phnum = elf16_to_cpu(ehdr, buf_ehdr->e_phnum); + ehdr->e_shentsize = elf16_to_cpu(ehdr, buf_ehdr->e_shentsize); + ehdr->e_shnum = elf16_to_cpu(ehdr, buf_ehdr->e_shnum); + ehdr->e_shstrndx = elf16_to_cpu(ehdr, buf_ehdr->e_shstrndx); + + return elf_is_ehdr_sane(ehdr, len) ? 0 : -ENOEXEC; +} + +/** + * elf_is_phdr_sane - check that it is safe to use the program header + * @buf_len: size of the buffer in which the ELF file is loaded. + */ +static bool elf_is_phdr_sane(const struct elf_phdr *phdr, size_t buf_len) +{ + + if (phdr->p_offset + phdr->p_filesz < phdr->p_offset) { + pr_debug("ELF segment location wraps around.\n"); + return false; + } else if (phdr->p_offset + phdr->p_filesz > buf_len) { + pr_debug("ELF segment not in file.\n"); + return false; + } else if (phdr->p_paddr + phdr->p_memsz < phdr->p_paddr) { + pr_debug("ELF segment address wraps around.\n"); + return false; + } + + return true; +} + +static int elf_read_phdr(const char *buf, size_t len, struct elf_info *elf_info, + int idx) +{ + /* Override the const in proghdrs, we are the ones doing the loading. */ + struct elf_phdr *phdr = (struct elf_phdr *) &elf_info->proghdrs[idx]; + const char *pbuf; + struct elf_phdr *buf_phdr; + + pbuf = buf + elf_info->ehdr->e_phoff + (idx * sizeof(*buf_phdr)); + buf_phdr = (struct elf_phdr *) pbuf; + + phdr->p_type = elf32_to_cpu(elf_info->ehdr, buf_phdr->p_type); + phdr->p_offset = elf_addr_to_cpu(elf_info->ehdr, buf_phdr->p_offset); + phdr->p_paddr = elf_addr_to_cpu(elf_info->ehdr, buf_phdr->p_paddr); + phdr->p_vaddr = elf_addr_to_cpu(elf_info->ehdr, buf_phdr->p_vaddr); + phdr->p_flags = elf32_to_cpu(elf_info->ehdr, buf_phdr->p_flags); + + /* + * The following fields have a type equivalent to Elf_Addr + * both in 32 bit and 64 bit ELF. + */ + phdr->p_filesz = elf_addr_to_cpu(elf_info->ehdr, buf_phdr->p_filesz); + phdr->p_memsz = elf_addr_to_cpu(elf_info->ehdr, buf_phdr->p_memsz); + phdr->p_align = elf_addr_to_cpu(elf_info->ehdr, buf_phdr->p_align); + + return elf_is_phdr_sane(phdr, len) ? 0 : -ENOEXEC; +} + +/** + * elf_read_phdrs - read the program headers from the buffer + * + * This function assumes that the program header table was checked for sanity. + * Use elf_is_ehdr_sane() if it wasn't. + */ +static int elf_read_phdrs(const char *buf, size_t len, + struct elf_info *elf_info) +{ + size_t phdr_size, i; + const struct elfhdr *ehdr = elf_info->ehdr; + + /* + * e_phnum is at most 65535 so calculating the size of the + * program header cannot overflow. + */ + phdr_size = sizeof(struct elf_phdr) * ehdr->e_phnum; + + elf_info->proghdrs = kzalloc(phdr_size, GFP_KERNEL); + if (!elf_info->proghdrs) + return -ENOMEM; + + for (i = 0; i < ehdr->e_phnum; i++) { + int ret; + + ret = elf_read_phdr(buf, len, elf_info, i); + if (ret) { + kfree(elf_info->proghdrs); + elf_info->proghdrs = NULL; + return ret; + } + } + + return 0; +} + +/** + * elf_is_shdr_sane - check that it is safe to use the section header + * @buf_len: size of the buffer in which the ELF file is loaded. + */ +static bool elf_is_shdr_sane(const struct elf_shdr *shdr, size_t buf_len) +{ + bool size_ok; + + /* SHT_NULL headers have undefined values, so we can't check them. */ + if (shdr->sh_type == SHT_NULL) + return true; + + /* Now verify sh_entsize */ + switch (shdr->sh_type) { + case SHT_SYMTAB: + size_ok = shdr->sh_entsize == sizeof(Elf_Sym); + break; + case SHT_RELA: + size_ok = shdr->sh_entsize == sizeof(Elf_Rela); + break; + case SHT_DYNAMIC: + size_ok = shdr->sh_entsize == sizeof(Elf_Dyn); + break; + case SHT_REL: + size_ok = shdr->sh_entsize == sizeof(Elf_Rel); + break; + case SHT_NOTE: + case SHT_PROGBITS: + case SHT_HASH: + case SHT_NOBITS: + default: + /* + * This is a section whose entsize requirements + * I don't care about. If I don't know about + * the section I can't care about it's entsize + * requirements. + */ + size_ok = true; + break; + } + + if (!size_ok) { + pr_debug("ELF section with wrong entry size.\n"); + return false; + } else if (shdr->sh_addr + shdr->sh_size < shdr->sh_addr) { + pr_debug("ELF section address wraps around.\n"); + return false; + } + + if (shdr->sh_type != SHT_NOBITS) { + if (shdr->sh_offset + shdr->sh_size < shdr->sh_offset) { + pr_debug("ELF section location wraps around.\n"); + return false; + } else if (shdr->sh_offset + shdr->sh_size > buf_len) { + pr_debug("ELF section not in file.\n"); + return false; + } + } + + return true; +} + +static int elf_read_shdr(const char *buf, size_t len, struct elf_info *elf_info, + int idx) +{ + struct elf_shdr *shdr = &elf_info->sechdrs[idx]; + const struct elfhdr *ehdr = elf_info->ehdr; + const char *sbuf; + struct elf_shdr *buf_shdr; + + sbuf = buf + ehdr->e_shoff + idx * sizeof(*buf_shdr); + buf_shdr = (struct elf_shdr *) sbuf; + + shdr->sh_name = elf32_to_cpu(ehdr, buf_shdr->sh_name); + shdr->sh_type = elf32_to_cpu(ehdr, buf_shdr->sh_type); + shdr->sh_addr = elf_addr_to_cpu(ehdr, buf_shdr->sh_addr); + shdr->sh_offset = elf_addr_to_cpu(ehdr, buf_shdr->sh_offset); + shdr->sh_link = elf32_to_cpu(ehdr, buf_shdr->sh_link); + shdr->sh_info = elf32_to_cpu(ehdr, buf_shdr->sh_info); + + /* + * The following fields have a type equivalent to Elf_Addr + * both in 32 bit and 64 bit ELF. + */ + shdr->sh_flags = elf_addr_to_cpu(ehdr, buf_shdr->sh_flags); + shdr->sh_size = elf_addr_to_cpu(ehdr, buf_shdr->sh_size); + shdr->sh_addralign = elf_addr_to_cpu(ehdr, buf_shdr->sh_addralign); + shdr->sh_entsize = elf_addr_to_cpu(ehdr, buf_shdr->sh_entsize); + + return elf_is_shdr_sane(shdr, len) ? 0 : -ENOEXEC; +} + +/** + * elf_read_shdrs - read the section headers from the buffer + * + * This function assumes that the section header table was checked for sanity. + * Use elf_is_ehdr_sane() if it wasn't. + */ +static int elf_read_shdrs(const char *buf, size_t len, + struct elf_info *elf_info) +{ + size_t shdr_size, i; + + /* + * e_shnum is at most 65536 so calculating + * the size of the section header cannot overflow. + */ + shdr_size = sizeof(struct elf_shdr) * elf_info->ehdr->e_shnum; + + elf_info->sechdrs = kzalloc(shdr_size, GFP_KERNEL); + if (!elf_info->sechdrs) + return -ENOMEM; + + for (i = 0; i < elf_info->ehdr->e_shnum; i++) { + int ret; + + ret = elf_read_shdr(buf, len, elf_info, i); + if (ret) { + kfree(elf_info->sechdrs); + elf_info->sechdrs = NULL; + return ret; + } + } + + return 0; +} + +/** + * elf_read_from_buffer - read ELF file and sets up ELF header and ELF info + * @buf: Buffer to read ELF file from. + * @len: Size of @buf. + * @ehdr: Pointer to existing struct which will be populated. + * @elf_info: Pointer to existing struct which will be populated. + * + * This function allows reading ELF files with different byte order than + * the kernel, byte-swapping the fields as needed. + * + * Return: + * On success returns 0, and the caller should call elf_free_info(elf_info) to + * free the memory allocated for the section and program headers. + */ +int elf_read_from_buffer(const char *buf, size_t len, struct elfhdr *ehdr, + struct elf_info *elf_info) +{ + int ret; + + ret = elf_read_ehdr(buf, len, ehdr); + if (ret) + return ret; + + elf_info->buffer = buf; + elf_info->ehdr = ehdr; + if (ehdr->e_phoff > 0 && ehdr->e_phnum > 0) { + ret = elf_read_phdrs(buf, len, elf_info); + if (ret) + return ret; + } + if (ehdr->e_shoff > 0 && ehdr->e_shnum > 0) { + ret = elf_read_shdrs(buf, len, elf_info); + if (ret) { + kfree(elf_info->proghdrs); + return ret; + } + } + + return 0; +} + +/** + * elf_free_info - free memory allocated by elf_read_from_buffer + */ +void elf_free_info(struct elf_info *elf_info) +{ + kfree(elf_info->proghdrs); + kfree(elf_info->sechdrs); + memset(elf_info, 0, sizeof(*elf_info)); +} +/** + * build_elf_exec_info - read ELF executable and check that we can use it + */ +static int build_elf_exec_info(const char *buf, size_t len, struct elfhdr *ehdr, + struct elf_info *elf_info) +{ + int i; + int ret; + + ret = elf_read_from_buffer(buf, len, ehdr, elf_info); + if (ret) + return ret; + + /* Big endian vmlinux has type ET_DYN. */ + if (ehdr->e_type != ET_EXEC && ehdr->e_type != ET_DYN) { + pr_err("Not an ELF executable.\n"); + goto error; + } else if (!elf_info->proghdrs) { + pr_err("No ELF program header.\n"); + goto error; + } + + for (i = 0; i < ehdr->e_phnum; i++) { + /* + * Kexec does not support loading interpreters. + * In addition this check keeps us from attempting + * to kexec ordinay executables. + */ + if (elf_info->proghdrs[i].p_type == PT_INTERP) { + pr_err("Requires an ELF interpreter.\n"); + goto error; + } + } + + return 0; +error: + elf_free_info(elf_info); + return -ENOEXEC; +} + +static int elf64_probe(const char *buf, unsigned long len) +{ + struct elfhdr ehdr; + struct elf_info elf_info; + int ret; + + ret = build_elf_exec_info(buf, len, &ehdr, &elf_info); + if (ret) + return ret; + + elf_free_info(&elf_info); + + return elf_check_arch(&ehdr) ? 0 : -ENOEXEC; +} + +/** + * elf_exec_load - load ELF executable image + * @lowest_load_addr: On return, will be the address where the first PT_LOAD + * section will be loaded in memory. + * + * Return: + * 0 on success, negative value on failure. + */ +static int elf_exec_load(struct kimage *image, struct elfhdr *ehdr, + struct elf_info *elf_info, + unsigned long *lowest_load_addr) +{ + unsigned long base = 0, lowest_addr = UINT_MAX; + int ret; + size_t i; + struct kexec_buf kbuf = { .image = image, .buf_max = ppc64_rma_size, + .top_down = false }; + + /* Read in the PT_LOAD segments. */ + for (i = 0; i < ehdr->e_phnum; i++) { + unsigned long load_addr; + size_t size; + const struct elf_phdr *phdr; + + phdr = &elf_info->proghdrs[i]; + if (phdr->p_type != PT_LOAD) + continue; + + size = phdr->p_filesz; + if (size > phdr->p_memsz) + size = phdr->p_memsz; + + kbuf.buffer = (void *) elf_info->buffer + phdr->p_offset; + kbuf.bufsz = size; + kbuf.memsz = phdr->p_memsz; + kbuf.buf_align = phdr->p_align; + kbuf.buf_min = phdr->p_paddr + base; + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out; + load_addr = kbuf.mem; + + if (load_addr < lowest_addr) + lowest_addr = load_addr; + } + + /* Update entry point to reflect new load address. */ + ehdr->e_entry += base; + + *lowest_load_addr = lowest_addr; + ret = 0; + out: + return ret; +} + +static void *elf64_load(struct kimage *image, char *kernel_buf, + unsigned long kernel_len, char *initrd, + unsigned long initrd_len, char *cmdline, + unsigned long cmdline_len) +{ + int ret; + unsigned int fdt_size; + unsigned long kernel_load_addr, purgatory_load_addr; + unsigned long initrd_load_addr = 0, fdt_load_addr; + void *fdt; + const void *slave_code; + struct elfhdr ehdr; + struct elf_info elf_info; + struct kexec_buf kbuf = { .image = image, .buf_min = 0, + .buf_max = ppc64_rma_size }; + + ret = build_elf_exec_info(kernel_buf, kernel_len, &ehdr, &elf_info); + if (ret) + goto out; + + ret = elf_exec_load(image, &ehdr, &elf_info, &kernel_load_addr); + if (ret) + goto out; + + pr_debug("Loaded the kernel at 0x%lx\n", kernel_load_addr); + + ret = kexec_load_purgatory(image, 0, ppc64_rma_size, true, + &purgatory_load_addr); + if (ret) { + pr_err("Loading purgatory failed.\n"); + goto out; + } + + pr_debug("Loaded purgatory at 0x%lx\n", purgatory_load_addr); + + if (initrd != NULL) { + kbuf.buffer = initrd; + kbuf.bufsz = kbuf.memsz = initrd_len; + kbuf.buf_align = PAGE_SIZE; + kbuf.top_down = false; + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out; + initrd_load_addr = kbuf.mem; + + pr_debug("Loaded initrd at 0x%lx\n", initrd_load_addr); + } + + fdt_size = fdt_totalsize(initial_boot_params) * 2; + fdt = kmalloc(fdt_size, GFP_KERNEL); + if (!fdt) { + pr_err("Not enough memory for the device tree.\n"); + ret = -ENOMEM; + goto out; + } + ret = fdt_open_into(initial_boot_params, fdt, fdt_size); + if (ret < 0) { + pr_err("Error setting up the new device tree.\n"); + ret = -EINVAL; + goto out; + } + + ret = setup_new_fdt(fdt, initrd_load_addr, initrd_len, cmdline); + if (ret) + goto out; + + fdt_pack(fdt); + + kbuf.buffer = fdt; + kbuf.bufsz = kbuf.memsz = fdt_size; + kbuf.buf_align = PAGE_SIZE; + kbuf.top_down = true; + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out; + fdt_load_addr = kbuf.mem; + + pr_debug("Loaded device tree at 0x%lx\n", fdt_load_addr); + + slave_code = elf_info.buffer + elf_info.proghdrs[0].p_offset; + ret = setup_purgatory(image, slave_code, fdt, kernel_load_addr, + fdt_load_addr); + if (ret) + pr_err("Error setting up the purgatory.\n"); + +out: + elf_free_info(&elf_info); + + /* Make kimage_file_post_load_cleanup free the fdt buffer for us. */ + return ret ? ERR_PTR(ret) : fdt; +} + +struct kexec_file_ops kexec_elf64_ops = { + .probe = elf64_probe, + .load = elf64_load, +}; diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c index e785cc9..ad108b8 100644 --- a/arch/powerpc/kernel/kprobes.c +++ b/arch/powerpc/kernel/kprobes.c @@ -140,13 +140,16 @@ void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri, regs->link = (unsigned long)kretprobe_trampoline; } -static int __kprobes kprobe_handler(struct pt_regs *regs) +int __kprobes kprobe_handler(struct pt_regs *regs) { struct kprobe *p; int ret = 0; unsigned int *addr = (unsigned int *)regs->nip; struct kprobe_ctlblk *kcb; + if (user_mode(regs)) + return 0; + /* * We don't want to be preempted for the entire * duration of kprobe processing @@ -359,12 +362,12 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p, * single-stepped a copy of the instruction. The address of this * copy is p->ainsn.insn. */ -static int __kprobes post_kprobe_handler(struct pt_regs *regs) +int __kprobes kprobe_post_handler(struct pt_regs *regs) { struct kprobe *cur = kprobe_running(); struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); - if (!cur) + if (!cur || user_mode(regs)) return 0; /* make sure we got here for instruction we have a kprobe on */ @@ -449,7 +452,7 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr) * zero, try to fix up. */ if ((entry = search_exception_tables(regs->nip)) != NULL) { - regs->nip = entry->fixup; + regs->nip = extable_fixup(entry); return 1; } @@ -470,25 +473,7 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr) int __kprobes kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *data) { - struct die_args *args = (struct die_args *)data; - int ret = NOTIFY_DONE; - - if (args->regs && user_mode(args->regs)) - return ret; - - switch (val) { - case DIE_BPT: - if (kprobe_handler(args->regs)) - ret = NOTIFY_STOP; - break; - case DIE_SSTEP: - if (post_kprobe_handler(args->regs)) - ret = NOTIFY_STOP; - break; - default: - break; - } - return ret; + return NOTIFY_DONE; } unsigned long arch_deref_entry_point(void *entry) diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index a205fa3..5c12e21 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c @@ -310,7 +310,7 @@ void default_machine_kexec(struct kimage *image) if (!kdump_in_progress()) kexec_prepare_cpus(); - pr_debug("kexec: Starting switchover sequence.\n"); + printk("kexec: Starting switchover sequence.\n"); /* switch to a staticly allocated stack. Based on irq stack code. * We setup preempt_count to avoid using VMX in memcpy. diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c new file mode 100644 index 0000000..7abc8a7 --- /dev/null +++ b/arch/powerpc/kernel/machine_kexec_file_64.c @@ -0,0 +1,338 @@ +/* + * ppc64 code to implement the kexec_file_load syscall + * + * Copyright (C) 2004 Adam Litke (agl@us.ibm.com) + * Copyright (C) 2004 IBM Corp. + * Copyright (C) 2004,2005 Milton D Miller II, IBM Corporation + * Copyright (C) 2005 R Sharada (sharada@in.ibm.com) + * Copyright (C) 2006 Mohan Kumar M (mohan@in.ibm.com) + * Copyright (C) 2016 IBM Corporation + * + * Based on kexec-tools' kexec-elf-ppc64.c, fs2dt.c. + * Heavily modified for the kernel by + * Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation (version 2 of the License). + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/slab.h> +#include <linux/kexec.h> +#include <linux/memblock.h> +#include <linux/of_fdt.h> +#include <linux/libfdt.h> + +#define SLAVE_CODE_SIZE 256 + +static struct kexec_file_ops *kexec_file_loaders[] = { + &kexec_elf64_ops, +}; + +int arch_kexec_kernel_image_probe(struct kimage *image, void *buf, + unsigned long buf_len) +{ + int i, ret = -ENOEXEC; + struct kexec_file_ops *fops; + + /* We don't support crash kernels yet. */ + if (image->type == KEXEC_TYPE_CRASH) + return -ENOTSUPP; + + for (i = 0; i < ARRAY_SIZE(kexec_file_loaders); i++) { + fops = kexec_file_loaders[i]; + if (!fops || !fops->probe) + continue; + + ret = fops->probe(buf, buf_len); + if (!ret) { + image->fops = fops; + return ret; + } + } + + return ret; +} + +void *arch_kexec_kernel_image_load(struct kimage *image) +{ + if (!image->fops || !image->fops->load) + return ERR_PTR(-ENOEXEC); + + return image->fops->load(image, image->kernel_buf, + image->kernel_buf_len, image->initrd_buf, + image->initrd_buf_len, image->cmdline_buf, + image->cmdline_buf_len); +} + +int arch_kimage_file_post_load_cleanup(struct kimage *image) +{ + if (!image->fops || !image->fops->cleanup) + return 0; + + return image->fops->cleanup(image->image_loader_data); +} + +/** + * arch_kexec_walk_mem - call func(data) for each unreserved memory block + * @kbuf: Context info for the search. Also passed to @func. + * @func: Function to call for each memory block. + * + * This function is used by kexec_add_buffer and kexec_locate_mem_hole + * to find unreserved memory to load kexec segments into. + * + * Return: The memory walk will stop when func returns a non-zero value + * and that value will be returned. If all free regions are visited without + * func returning non-zero, then zero will be returned. + */ +int arch_kexec_walk_mem(struct kexec_buf *kbuf, int (*func)(u64, u64, void *)) +{ + int ret = 0; + u64 i; + phys_addr_t mstart, mend; + + if (kbuf->top_down) { + for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0, + &mstart, &mend, NULL) { + /* + * In memblock, end points to the first byte after the + * range while in kexec, end points to the last byte + * in the range. + */ + ret = func(mstart, mend - 1, kbuf); + if (ret) + break; + } + } else { + for_each_free_mem_range(i, NUMA_NO_NODE, 0, &mstart, &mend, + NULL) { + /* + * In memblock, end points to the first byte after the + * range while in kexec, end points to the last byte + * in the range. + */ + ret = func(mstart, mend - 1, kbuf); + if (ret) + break; + } + } + + return ret; +} + +/** + * setup_purgatory - initialize the purgatory's global variables + * @image: kexec image. + * @slave_code: Slave code for the purgatory. + * @fdt: Flattened device tree for the next kernel. + * @kernel_load_addr: Address where the kernel is loaded. + * @fdt_load_addr: Address where the flattened device tree is loaded. + * + * Return: 0 on success, or negative errno on error. + */ +int setup_purgatory(struct kimage *image, const void *slave_code, + const void *fdt, unsigned long kernel_load_addr, + unsigned long fdt_load_addr) +{ + unsigned int *slave_code_buf, master_entry; + int ret; + + slave_code_buf = kmalloc(SLAVE_CODE_SIZE, GFP_KERNEL); + if (!slave_code_buf) + return -ENOMEM; + + /* Get the slave code from the new kernel and put it in purgatory. */ + ret = kexec_purgatory_get_set_symbol(image, "purgatory_start", + slave_code_buf, SLAVE_CODE_SIZE, + true); + if (ret) { + kfree(slave_code_buf); + return ret; + } + + master_entry = slave_code_buf[0]; + memcpy(slave_code_buf, slave_code, SLAVE_CODE_SIZE); + slave_code_buf[0] = master_entry; + ret = kexec_purgatory_get_set_symbol(image, "purgatory_start", + slave_code_buf, SLAVE_CODE_SIZE, + false); + kfree(slave_code_buf); + + ret = kexec_purgatory_get_set_symbol(image, "kernel", &kernel_load_addr, + sizeof(kernel_load_addr), false); + if (ret) + return ret; + ret = kexec_purgatory_get_set_symbol(image, "dt_offset", &fdt_load_addr, + sizeof(fdt_load_addr), false); + if (ret) + return ret; + + return 0; +} + +/** + * delete_fdt_mem_rsv - delete memory reservation with given address and size + * + * Return: 0 on success, or negative errno on error. + */ +static int delete_fdt_mem_rsv(void *fdt, unsigned long start, unsigned long size) +{ + int i, ret, num_rsvs = fdt_num_mem_rsv(fdt); + + for (i = 0; i < num_rsvs; i++) { + uint64_t rsv_start, rsv_size; + + ret = fdt_get_mem_rsv(fdt, i, &rsv_start, &rsv_size); + if (ret) { + pr_err("Malformed device tree.\n"); + return -EINVAL; + } + + if (rsv_start == start && rsv_size == size) { + ret = fdt_del_mem_rsv(fdt, i); + if (ret) { + pr_err("Error deleting device tree reservation.\n"); + return -EINVAL; + } + + return 0; + } + } + + return -ENOENT; +} + +/* + * setup_new_fdt - modify /chosen and memory reservation for the next kernel + * @fdt: Flattened device tree for the next kernel. + * @initrd_load_addr: Address where the next initrd will be loaded. + * @initrd_len: Size of the next initrd, or 0 if there will be none. + * @cmdline: Command line for the next kernel, or NULL if there will + * be none. + * + * Return: 0 on success, or negative errno on error. + */ +int setup_new_fdt(void *fdt, unsigned long initrd_load_addr, + unsigned long initrd_len, const char *cmdline) +{ + int ret, chosen_node; + const void *prop; + + /* Remove memory reservation for the current device tree. */ + ret = delete_fdt_mem_rsv(fdt, __pa(initial_boot_params), + fdt_totalsize(initial_boot_params)); + if (ret == 0) + pr_debug("Removed old device tree reservation.\n"); + else if (ret != -ENOENT) + return ret; + + chosen_node = fdt_path_offset(fdt, "/chosen"); + if (chosen_node == -FDT_ERR_NOTFOUND) { + chosen_node = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), + "chosen"); + if (chosen_node < 0) { + pr_err("Error creating /chosen.\n"); + return -EINVAL; + } + } else if (chosen_node < 0) { + pr_err("Malformed device tree: error reading /chosen.\n"); + return -EINVAL; + } + + /* Did we boot using an initrd? */ + prop = fdt_getprop(fdt, chosen_node, "linux,initrd-start", NULL); + if (prop) { + uint64_t tmp_start, tmp_end, tmp_size; + + tmp_start = fdt64_to_cpu(*((const fdt64_t *) prop)); + + prop = fdt_getprop(fdt, chosen_node, "linux,initrd-end", NULL); + if (!prop) { + pr_err("Malformed device tree.\n"); + return -EINVAL; + } + tmp_end = fdt64_to_cpu(*((const fdt64_t *) prop)); + + /* + * kexec reserves exact initrd size, while firmware may + * reserve a multiple of PAGE_SIZE, so check for both. + */ + tmp_size = tmp_end - tmp_start; + ret = delete_fdt_mem_rsv(fdt, tmp_start, tmp_size); + if (ret == -ENOENT) + ret = delete_fdt_mem_rsv(fdt, tmp_start, + round_up(tmp_size, PAGE_SIZE)); + if (ret == 0) + pr_debug("Removed old initrd reservation.\n"); + else if (ret != -ENOENT) + return ret; + + /* If there's no new initrd, delete the old initrd's info. */ + if (initrd_len == 0) { + ret = fdt_delprop(fdt, chosen_node, + "linux,initrd-start"); + if (ret) { + pr_err("Error deleting linux,initrd-start.\n"); + return -EINVAL; + } + + ret = fdt_delprop(fdt, chosen_node, "linux,initrd-end"); + if (ret) { + pr_err("Error deleting linux,initrd-end.\n"); + return -EINVAL; + } + } + } + + if (initrd_len) { + ret = fdt_setprop_u64(fdt, chosen_node, + "linux,initrd-start", + initrd_load_addr); + if (ret < 0) { + pr_err("Error setting up the new device tree.\n"); + return -EINVAL; + } + + /* initrd-end is the first address after the initrd image. */ + ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-end", + initrd_load_addr + initrd_len); + if (ret < 0) { + pr_err("Error setting up the new device tree.\n"); + return -EINVAL; + } + + ret = fdt_add_mem_rsv(fdt, initrd_load_addr, initrd_len); + if (ret) { + pr_err("Error reserving initrd memory: %s\n", + fdt_strerror(ret)); + return -EINVAL; + } + } + + if (cmdline != NULL) { + ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline); + if (ret < 0) { + pr_err("Error setting up the new device tree.\n"); + return -EINVAL; + } + } else { + ret = fdt_delprop(fdt, chosen_node, "bootargs"); + if (ret && ret != -FDT_ERR_NOTFOUND) { + pr_err("Error deleting bootargs.\n"); + return -EINVAL; + } + } + + ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0); + if (ret) { + pr_err("Error setting up the new device tree.\n"); + return -EINVAL; + } + + return 0; +} diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c index 5e7ece0..c6923ff 100644 --- a/arch/powerpc/kernel/mce.c +++ b/arch/powerpc/kernel/mce.c @@ -72,7 +72,6 @@ void save_mce_event(struct pt_regs *regs, long handled, struct mce_error_info *mce_err, uint64_t nip, uint64_t addr) { - uint64_t srr1; int index = __this_cpu_inc_return(mce_nest_count) - 1; struct machine_check_event *mce = this_cpu_ptr(&mce_event[index]); @@ -99,8 +98,6 @@ void save_mce_event(struct pt_regs *regs, long handled, mce->disposition = MCE_DISPOSITION_NOT_RECOVERED; mce->severity = MCE_SEV_ERROR_SYNC; - srr1 = regs->msr; - /* * Populate the mce error_type and type-specific error_type. */ diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 93cf7a5..1863324 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -614,7 +614,7 @@ _GLOBAL(start_secondary_resume) _GLOBAL(__main) blr -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE /* * Must be relocatable PIC code callable as a C function. */ diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 4f17867..32be2a8 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -478,7 +478,7 @@ _GLOBAL(kexec_wait) addi r5,r5,kexec_flag-1b 99: HMT_LOW -#ifdef CONFIG_KEXEC /* use no memory without kexec */ +#ifdef CONFIG_KEXEC_CORE /* use no memory without kexec */ lwz r4,0(r5) cmpwi 0,r4,0 beq 99b @@ -503,7 +503,7 @@ kexec_flag: .long 0 -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE #ifdef CONFIG_PPC_BOOK3E /* * BOOK3E has no real MMU mode, so we have to setup the initial TLB @@ -716,4 +716,4 @@ _GLOBAL(kexec_sequence) mtlr 4 li r5,0 blr /* image->start(physid, image->start, 0); */ -#endif /* CONFIG_KEXEC */ +#endif /* CONFIG_KEXEC_CORE */ diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c index 183368e..bb18071 100644 --- a/arch/powerpc/kernel/module_64.c +++ b/arch/powerpc/kernel/module_64.c @@ -652,6 +652,11 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, *location = value - (unsigned long)location; break; + case R_PPC64_REL32: + /* 32 bits relative (used by relative exception tables) */ + *(u32 *)location = value - (unsigned long)location; + break; + case R_PPC64_TOCSAVE: /* * Marker reloc indicates we don't have to save r2. diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c index b60a67d..34aeac5 100644 --- a/arch/powerpc/kernel/of_platform.c +++ b/arch/powerpc/kernel/of_platform.c @@ -114,11 +114,6 @@ static struct platform_driver of_pci_phb_driver = { }, }; -static __init int of_pci_phb_init(void) -{ - return platform_driver_register(&of_pci_phb_driver); -} - -device_initcall(of_pci_phb_init); +builtin_platform_driver(of_pci_phb_driver); #endif /* CONFIG_PPC_OF_PLATFORM_PCI */ diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 49a680d..04885ce 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -64,6 +64,12 @@ #include <linux/kprobes.h> #include <linux/kdebug.h> +#ifdef CONFIG_CC_STACKPROTECTOR +#include <linux/stackprotector.h> +unsigned long __stack_chk_guard __read_mostly; +EXPORT_SYMBOL(__stack_chk_guard); +#endif + /* Transactional Memory debug */ #ifdef TM_DEBUG_SW #define TM_DEBUG(x...) printk(KERN_INFO x) @@ -1051,14 +1057,6 @@ static inline void save_sprs(struct thread_struct *t) */ t->tar = mfspr(SPRN_TAR); } - - if (cpu_has_feature(CPU_FTR_ARCH_300)) { - /* Conditionally save Load Monitor registers, if enabled */ - if (t->fscr & FSCR_LM) { - t->lmrr = mfspr(SPRN_LMRR); - t->lmser = mfspr(SPRN_LMSER); - } - } #endif } @@ -1094,16 +1092,6 @@ static inline void restore_sprs(struct thread_struct *old_thread, if (old_thread->tar != new_thread->tar) mtspr(SPRN_TAR, new_thread->tar); } - - if (cpu_has_feature(CPU_FTR_ARCH_300)) { - /* Conditionally restore Load Monitor registers, if enabled */ - if (new_thread->fscr & FSCR_LM) { - if (old_thread->lmrr != new_thread->lmrr) - mtspr(SPRN_LMRR, new_thread->lmrr); - if (old_thread->lmser != new_thread->lmser) - mtspr(SPRN_LMSER, new_thread->lmser); - } - } #endif } diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index b0245be..f5d399e 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -156,21 +156,22 @@ static struct ibm_pa_feature { unsigned char pabit; /* bit number (big-endian) */ unsigned char invert; /* if 1, pa bit set => clear feature */ } ibm_pa_features[] __initdata = { - {0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0, 0}, - {0, 0, PPC_FEATURE_HAS_FPU, 0, 0, 1, 0}, - {CPU_FTR_CTRL, 0, 0, 0, 0, 3, 0}, - {CPU_FTR_NOEXECUTE, 0, 0, 0, 0, 6, 0}, - {CPU_FTR_NODSISRALIGN, 0, 0, 0, 1, 1, 1}, - {0, MMU_FTR_CI_LARGE_PAGE, 0, 0, 1, 2, 0}, - {CPU_FTR_REAL_LE, 0, PPC_FEATURE_TRUE_LE, 0, 5, 0, 0}, + { .pabyte = 0, .pabit = 0, .cpu_user_ftrs = PPC_FEATURE_HAS_MMU }, + { .pabyte = 0, .pabit = 1, .cpu_user_ftrs = PPC_FEATURE_HAS_FPU }, + { .pabyte = 0, .pabit = 3, .cpu_features = CPU_FTR_CTRL }, + { .pabyte = 0, .pabit = 6, .cpu_features = CPU_FTR_NOEXECUTE }, + { .pabyte = 1, .pabit = 2, .mmu_features = MMU_FTR_CI_LARGE_PAGE }, + { .pabyte = 40, .pabit = 0, .mmu_features = MMU_FTR_TYPE_RADIX }, + { .pabyte = 1, .pabit = 1, .invert = 1, .cpu_features = CPU_FTR_NODSISRALIGN }, + { .pabyte = 5, .pabit = 0, .cpu_features = CPU_FTR_REAL_LE, + .cpu_user_ftrs = PPC_FEATURE_TRUE_LE }, /* * If the kernel doesn't support TM (ie CONFIG_PPC_TRANSACTIONAL_MEM=n), * we don't want to turn on TM here, so we use the *_COMP versions * which are 0 if the kernel doesn't support TM. */ - {CPU_FTR_TM_COMP, 0, 0, - PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0}, - {0, MMU_FTR_TYPE_RADIX, 0, 0, 40, 0, 0}, + { .pabyte = 22, .pabit = 0, .cpu_features = CPU_FTR_TM_COMP, + .cpu_user_ftrs2 = PPC_FEATURE2_HTM_COMP | PPC_FEATURE2_HTM_NOSC_COMP }, }; static void __init scan_features(unsigned long node, const unsigned char *ftrs, @@ -427,7 +428,7 @@ static int __init early_init_dt_scan_chosen_ppc(unsigned long node, tce_alloc_end = *lprop; #endif -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE lprop = of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL); if (lprop) crashk_res.start = *lprop; diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 88ac964..ec47a93 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -461,14 +461,14 @@ static int __init prom_next_node(phandle *nodep) } } -static int inline prom_getprop(phandle node, const char *pname, +static inline int prom_getprop(phandle node, const char *pname, void *value, size_t valuelen) { return call_prom("getprop", 4, 1, node, ADDR(pname), (u32)(unsigned long) value, (u32) valuelen); } -static int inline prom_getproplen(phandle node, const char *pname) +static inline int prom_getproplen(phandle node, const char *pname) { return call_prom("getproplen", 2, 1, node, ADDR(pname)); } @@ -635,13 +635,7 @@ static void __init early_cmdline_parse(void) * * See prom.h for the definition of the bits specified in the * architecture vector. - * - * Because the description vector contains a mix of byte and word - * values, we declare it as an unsigned char array, and use this - * macro to put word values in. */ -#define W(x) ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \ - ((x) >> 8) & 0xff, (x) & 0xff /* Firmware expects the value to be n - 1, where n is the # of vectors */ #define NUM_VECTORS(n) ((n) - 1) @@ -652,92 +646,205 @@ static void __init early_cmdline_parse(void) */ #define VECTOR_LENGTH(n) (1 + (n) - 2) -unsigned char ibm_architecture_vec[] = { - W(0xfffe0000), W(0x003a0000), /* POWER5/POWER5+ */ - W(0xffff0000), W(0x003e0000), /* POWER6 */ - W(0xffff0000), W(0x003f0000), /* POWER7 */ - W(0xffff0000), W(0x004b0000), /* POWER8E */ - W(0xffff0000), W(0x004c0000), /* POWER8NVL */ - W(0xffff0000), W(0x004d0000), /* POWER8 */ - W(0xffffffff), W(0x0f000004), /* all 2.07-compliant */ - W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */ - W(0xffffffff), W(0x0f000002), /* all 2.05-compliant */ - W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */ - NUM_VECTORS(6), /* 6 option vectors */ - - /* option vector 1: processor architectures supported */ - VECTOR_LENGTH(2), /* length */ - 0, /* don't ignore, don't halt */ - OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 | - OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07, +struct option_vector1 { + u8 byte1; + u8 arch_versions; +} __packed; + +struct option_vector2 { + u8 byte1; + __be16 reserved; + __be32 real_base; + __be32 real_size; + __be32 virt_base; + __be32 virt_size; + __be32 load_base; + __be32 min_rma; + __be32 min_load; + u8 min_rma_percent; + u8 max_pft_size; +} __packed; + +struct option_vector3 { + u8 byte1; + u8 byte2; +} __packed; + +struct option_vector4 { + u8 byte1; + u8 min_vp_cap; +} __packed; + +struct option_vector5 { + u8 byte1; + u8 byte2; + u8 byte3; + u8 cmo; + u8 associativity; + u8 bin_opts; + u8 micro_checkpoint; + u8 reserved0; + __be32 max_cpus; + __be16 papr_level; + __be16 reserved1; + u8 platform_facilities; + u8 reserved2; + __be16 reserved3; + u8 subprocessors; +} __packed; + +struct option_vector6 { + u8 reserved; + u8 secondary_pteg; + u8 os_name; +} __packed; + +struct ibm_arch_vec { + struct { u32 mask, val; } pvrs[10]; + + u8 num_vectors; + + u8 vec1_len; + struct option_vector1 vec1; + + u8 vec2_len; + struct option_vector2 vec2; + + u8 vec3_len; + struct option_vector3 vec3; + + u8 vec4_len; + struct option_vector4 vec4; + + u8 vec5_len; + struct option_vector5 vec5; + + u8 vec6_len; + struct option_vector6 vec6; +} __packed; + +struct ibm_arch_vec __cacheline_aligned ibm_architecture_vec = { + .pvrs = { + { + .mask = cpu_to_be32(0xfffe0000), /* POWER5/POWER5+ */ + .val = cpu_to_be32(0x003a0000), + }, + { + .mask = cpu_to_be32(0xffff0000), /* POWER6 */ + .val = cpu_to_be32(0x003e0000), + }, + { + .mask = cpu_to_be32(0xffff0000), /* POWER7 */ + .val = cpu_to_be32(0x003f0000), + }, + { + .mask = cpu_to_be32(0xffff0000), /* POWER8E */ + .val = cpu_to_be32(0x004b0000), + }, + { + .mask = cpu_to_be32(0xffff0000), /* POWER8NVL */ + .val = cpu_to_be32(0x004c0000), + }, + { + .mask = cpu_to_be32(0xffff0000), /* POWER8 */ + .val = cpu_to_be32(0x004d0000), + }, + { + .mask = cpu_to_be32(0xffffffff), /* all 2.07-compliant */ + .val = cpu_to_be32(0x0f000004), + }, + { + .mask = cpu_to_be32(0xffffffff), /* all 2.06-compliant */ + .val = cpu_to_be32(0x0f000003), + }, + { + .mask = cpu_to_be32(0xffffffff), /* all 2.05-compliant */ + .val = cpu_to_be32(0x0f000002), + }, + { + .mask = cpu_to_be32(0xfffffffe), /* all 2.04-compliant and earlier */ + .val = cpu_to_be32(0x0f000001), + }, + }, + + .num_vectors = NUM_VECTORS(6), + .vec1_len = VECTOR_LENGTH(sizeof(struct option_vector1)), + .vec1 = { + .byte1 = 0, + .arch_versions = OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 | + OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07, + }, + + .vec2_len = VECTOR_LENGTH(sizeof(struct option_vector2)), /* option vector 2: Open Firmware options supported */ - VECTOR_LENGTH(33), /* length */ - OV2_REAL_MODE, - 0, 0, - W(0xffffffff), /* real_base */ - W(0xffffffff), /* real_size */ - W(0xffffffff), /* virt_base */ - W(0xffffffff), /* virt_size */ - W(0xffffffff), /* load_base */ - W(256), /* 256MB min RMA */ - W(0xffffffff), /* full client load */ - 0, /* min RMA percentage of total RAM */ - 48, /* max log_2(hash table size) */ + .vec2 = { + .byte1 = OV2_REAL_MODE, + .reserved = 0, + .real_base = cpu_to_be32(0xffffffff), + .real_size = cpu_to_be32(0xffffffff), + .virt_base = cpu_to_be32(0xffffffff), + .virt_size = cpu_to_be32(0xffffffff), + .load_base = cpu_to_be32(0xffffffff), + .min_rma = cpu_to_be32(256), /* 256MB min RMA */ + .min_load = cpu_to_be32(0xffffffff), /* full client load */ + .min_rma_percent = 0, /* min RMA percentage of total RAM */ + .max_pft_size = 48, /* max log_2(hash table size) */ + }, + .vec3_len = VECTOR_LENGTH(sizeof(struct option_vector3)), /* option vector 3: processor options supported */ - VECTOR_LENGTH(2), /* length */ - 0, /* don't ignore, don't halt */ - OV3_FP | OV3_VMX | OV3_DFP, + .vec3 = { + .byte1 = 0, /* don't ignore, don't halt */ + .byte2 = OV3_FP | OV3_VMX | OV3_DFP, + }, + .vec4_len = VECTOR_LENGTH(sizeof(struct option_vector4)), /* option vector 4: IBM PAPR implementation */ - VECTOR_LENGTH(2), /* length */ - 0, /* don't halt */ - OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */ + .vec4 = { + .byte1 = 0, /* don't halt */ + .min_vp_cap = OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */ + }, + .vec5_len = VECTOR_LENGTH(sizeof(struct option_vector5)), /* option vector 5: PAPR/OF options */ - VECTOR_LENGTH(21), /* length */ - 0, /* don't ignore, don't halt */ - OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) | - OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) | + .vec5 = { + .byte1 = 0, /* don't ignore, don't halt */ + .byte2 = OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) | + OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) | #ifdef CONFIG_PCI_MSI - /* PCIe/MSI support. Without MSI full PCIe is not supported */ - OV5_FEAT(OV5_MSI), + /* PCIe/MSI support. Without MSI full PCIe is not supported */ + OV5_FEAT(OV5_MSI), #else - 0, + 0, #endif - 0, + .byte3 = 0, + .cmo = #ifdef CONFIG_PPC_SMLPAR - OV5_FEAT(OV5_CMO) | OV5_FEAT(OV5_XCMO), + OV5_FEAT(OV5_CMO) | OV5_FEAT(OV5_XCMO), #else - 0, + 0, #endif - OV5_FEAT(OV5_TYPE1_AFFINITY) | OV5_FEAT(OV5_PRRN), - 0, - 0, - 0, - /* WARNING: The offset of the "number of cores" field below - * must match by the macro below. Update the definition if - * the structure layout changes. - */ -#define IBM_ARCH_VEC_NRCORES_OFFSET 133 - W(NR_CPUS), /* number of cores supported */ - 0, - 0, - 0, - 0, - OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | - OV5_FEAT(OV5_PFO_HW_842), /* Byte 17 */ - 0, /* Byte 18 */ - 0, /* Byte 19 */ - 0, /* Byte 20 */ - OV5_FEAT(OV5_SUB_PROCESSORS), /* Byte 21 */ + .associativity = OV5_FEAT(OV5_TYPE1_AFFINITY) | OV5_FEAT(OV5_PRRN), + .bin_opts = 0, + .micro_checkpoint = 0, + .reserved0 = 0, + .max_cpus = cpu_to_be32(NR_CPUS), /* number of cores supported */ + .papr_level = 0, + .reserved1 = 0, + .platform_facilities = OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | OV5_FEAT(OV5_PFO_HW_842), + .reserved2 = 0, + .reserved3 = 0, + .subprocessors = 1, + }, /* option vector 6: IBM PAPR hints */ - VECTOR_LENGTH(3), /* length */ - 0, - 0, - OV6_LINUX, + .vec6_len = VECTOR_LENGTH(sizeof(struct option_vector6)), + .vec6 = { + .reserved = 0, + .secondary_pteg = 0, + .os_name = OV6_LINUX, + }, }; /* Old method - ELF header with PT_NOTE sections only works on BE */ @@ -873,7 +980,6 @@ static void __init prom_send_capabilities(void) ihandle root; prom_arg_t ret; u32 cores; - unsigned char *ptcores; root = call_prom("open", 1, 1, ADDR("/")); if (root != 0) { @@ -884,37 +990,18 @@ static void __init prom_send_capabilities(void) * divide NR_CPUS. */ - /* The core value may start at an odd address. If such a word - * access is made at a cache line boundary, this leads to an - * exception which may not be handled at this time. - * Forcing a per byte access to avoid exception. - */ - ptcores = &ibm_architecture_vec[IBM_ARCH_VEC_NRCORES_OFFSET]; - cores = 0; - cores |= ptcores[0] << 24; - cores |= ptcores[1] << 16; - cores |= ptcores[2] << 8; - cores |= ptcores[3]; - if (cores != NR_CPUS) { - prom_printf("WARNING ! " - "ibm_architecture_vec structure inconsistent: %lu!\n", - cores); - } else { - cores = DIV_ROUND_UP(NR_CPUS, prom_count_smt_threads()); - prom_printf("Max number of cores passed to firmware: %lu (NR_CPUS = %lu)\n", - cores, NR_CPUS); - ptcores[0] = (cores >> 24) & 0xff; - ptcores[1] = (cores >> 16) & 0xff; - ptcores[2] = (cores >> 8) & 0xff; - ptcores[3] = cores & 0xff; - } + cores = DIV_ROUND_UP(NR_CPUS, prom_count_smt_threads()); + prom_printf("Max number of cores passed to firmware: %lu (NR_CPUS = %lu)\n", + cores, NR_CPUS); + + ibm_architecture_vec.vec5.max_cpus = cpu_to_be32(cores); /* try calling the ibm,client-architecture-support method */ prom_printf("Calling ibm,client-architecture-support..."); if (call_prom_ret("call-method", 3, 2, &ret, ADDR("ibm,client-architecture-support"), root, - ADDR(ibm_architecture_vec)) == 0) { + ADDR(&ibm_architecture_vec)) == 0) { /* the call exists... */ if (ret) prom_printf("\nWARNING: ibm,client-architecture" diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 270ee30..f516ac5 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -915,7 +915,7 @@ void __init setup_arch(char **cmdline_p) init_mm.context.pte_frag = NULL; #endif #ifdef CONFIG_SPAPR_TCE_IOMMU - mm_iommu_init(&init_mm.context); + mm_iommu_init(&init_mm); #endif irqstack_early_init(); exc_lvl_early_init(); diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 8d586cf..6824157e 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -354,7 +354,7 @@ void early_setup_secondary(void) #endif /* CONFIG_SMP */ -#if defined(CONFIG_SMP) || defined(CONFIG_KEXEC) +#if defined(CONFIG_SMP) || defined(CONFIG_KEXEC_CORE) static bool use_spinloop(void) { if (!IS_ENABLED(CONFIG_PPC_BOOK3E)) @@ -399,7 +399,7 @@ void smp_release_cpus(void) DBG(" <- smp_release_cpus()\n"); } -#endif /* CONFIG_SMP || CONFIG_KEXEC */ +#endif /* CONFIG_SMP || CONFIG_KEXEC_CORE */ /* * Initialize some remaining members of the ppc64_caches and systemcfg diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 9c6f3fd..893bd7f 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -193,7 +193,7 @@ int smp_request_message_ipi(int virq, int msg) if (msg < 0 || msg > PPC_MSG_DEBUGGER_BREAK) { return -EINVAL; } -#if !defined(CONFIG_DEBUGGER) && !defined(CONFIG_KEXEC) +#if !defined(CONFIG_DEBUGGER) && !defined(CONFIG_KEXEC_CORE) if (msg == PPC_MSG_DEBUGGER_BREAK) { return 1; } @@ -325,7 +325,7 @@ void tick_broadcast(const struct cpumask *mask) } #endif -#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC) +#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE) void smp_send_debugger_break(void) { int cpu; @@ -340,7 +340,7 @@ void smp_send_debugger_break(void) } #endif -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *)) { crash_ipi_function_ptr = crash_ipi_callback; diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 023a462..4239aaf 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -64,8 +64,9 @@ #include <asm/asm-prototypes.h> #include <asm/hmi.h> #include <sysdev/fsl_pci.h> +#include <asm/kprobes.h> -#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC) +#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE) int (*__debugger)(struct pt_regs *regs) __read_mostly; int (*__debugger_ipi)(struct pt_regs *regs) __read_mostly; int (*__debugger_bpt)(struct pt_regs *regs) __read_mostly; @@ -122,9 +123,6 @@ static unsigned long oops_begin(struct pt_regs *regs) int cpu; unsigned long flags; - if (debugger(regs)) - return 1; - oops_enter(); /* racy, but better than risking deadlock. */ @@ -150,14 +148,15 @@ static void oops_end(unsigned long flags, struct pt_regs *regs, int signr) { bust_spinlocks(0); - die_owner = -1; add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE); die_nest_count--; oops_exit(); printk("\n"); - if (!die_nest_count) + if (!die_nest_count) { /* Nest count reaches zero, release the lock. */ + die_owner = -1; arch_spin_unlock(&die_lock); + } raw_local_irq_restore(flags); crash_fadump(regs, "die oops"); @@ -227,8 +226,12 @@ NOKPROBE_SYMBOL(__die); void die(const char *str, struct pt_regs *regs, long err) { - unsigned long flags = oops_begin(regs); + unsigned long flags; + if (debugger(regs)) + return; + + flags = oops_begin(regs); if (__die(str, regs, err)) err = 0; oops_end(flags, regs, err); @@ -365,7 +368,7 @@ static inline int check_io_access(struct pt_regs *regs) (*nip & 0x100)? "OUT to": "IN from", regs->gpr[rb] - _IO_BASE, nip); regs->msr |= MSR_RI; - regs->nip = entry->fixup; + regs->nip = extable_fixup(entry); return 1; } } @@ -824,6 +827,9 @@ void single_step_exception(struct pt_regs *regs) clear_single_step(regs); + if (kprobe_post_handler(regs)) + return; + if (notify_die(DIE_SSTEP, "single_step", regs, 5, 5, SIGTRAP) == NOTIFY_STOP) goto bail; @@ -1177,6 +1183,9 @@ void program_check_exception(struct pt_regs *regs) if (debugger_bpt(regs)) goto bail; + if (kprobe_handler(regs)) + goto bail; + /* trap exception */ if (notify_die(DIE_BPT, "breakpoint", regs, 5, 5, SIGTRAP) == NOTIFY_STOP) @@ -1430,7 +1439,6 @@ void facility_unavailable_exception(struct pt_regs *regs) [FSCR_TM_LG] = "TM", [FSCR_EBB_LG] = "EBB", [FSCR_TAR_LG] = "TAR", - [FSCR_LM_LG] = "LM", }; char *facility = "unknown"; u64 value; @@ -1488,14 +1496,6 @@ void facility_unavailable_exception(struct pt_regs *regs) emulate_single_step(regs); } return; - } else if ((status == FSCR_LM_LG) && cpu_has_feature(CPU_FTR_ARCH_300)) { - /* - * This process has touched LM, so turn it on forever - * for this process - */ - current->thread.fscr |= FSCR_LM; - mtspr(SPRN_FSCR, current->thread.fscr); - return; } if (status == FSCR_TM_LG) { @@ -1519,7 +1519,8 @@ void facility_unavailable_exception(struct pt_regs *regs) return; } - if ((status < ARRAY_SIZE(facility_strings)) && + if ((hv || status >= 2) && + (status < ARRAY_SIZE(facility_strings)) && facility_strings[status]) facility = facility_strings[status]; @@ -1527,9 +1528,8 @@ void facility_unavailable_exception(struct pt_regs *regs) if (!arch_irq_disabled_regs(regs)) local_irq_enable(); - pr_err_ratelimited( - "%sFacility '%s' unavailable, exception at 0x%lx, MSR=%lx\n", - hv ? "Hypervisor " : "", facility, regs->nip, regs->msr); + pr_err_ratelimited("%sFacility '%s' unavailable (%d), exception at 0x%lx, MSR=%lx\n", + hv ? "Hypervisor " : "", facility, status, regs->nip, regs->msr); out: if (user_mode(regs)) { @@ -1754,6 +1754,9 @@ void DebugException(struct pt_regs *regs, unsigned long debug_status) return; } + if (kprobe_post_handler(regs)) + return; + if (notify_die(DIE_SSTEP, "block_step", regs, 5, 5, SIGTRAP) == NOTIFY_STOP) { return; @@ -1768,6 +1771,9 @@ void DebugException(struct pt_regs *regs, unsigned long debug_status) /* Clear the instruction completion event */ mtspr(SPRN_DBSR, DBSR_IC); + if (kprobe_post_handler(regs)) + return; + if (notify_die(DIE_SSTEP, "single_step", regs, 5, 5, SIGTRAP) == NOTIFY_STOP) { return; diff --git a/arch/powerpc/lib/checksum_32.S b/arch/powerpc/lib/checksum_32.S index ea29a5d..9a671c7 100644 --- a/arch/powerpc/lib/checksum_32.S +++ b/arch/powerpc/lib/checksum_32.S @@ -103,17 +103,14 @@ EXPORT_SYMBOL(__csum_partial) adde r12,r12,r10 #define CSUM_COPY_16_BYTES_EXCODE(n) \ -.section __ex_table,"a"; \ - .align 2; \ - .long 8 ## n ## 0b,src_error; \ - .long 8 ## n ## 1b,src_error; \ - .long 8 ## n ## 2b,src_error; \ - .long 8 ## n ## 3b,src_error; \ - .long 8 ## n ## 4b,dst_error; \ - .long 8 ## n ## 5b,dst_error; \ - .long 8 ## n ## 6b,dst_error; \ - .long 8 ## n ## 7b,dst_error; \ - .text + EX_TABLE(8 ## n ## 0b, src_error); \ + EX_TABLE(8 ## n ## 1b, src_error); \ + EX_TABLE(8 ## n ## 2b, src_error); \ + EX_TABLE(8 ## n ## 3b, src_error); \ + EX_TABLE(8 ## n ## 4b, dst_error); \ + EX_TABLE(8 ## n ## 5b, dst_error); \ + EX_TABLE(8 ## n ## 6b, dst_error); \ + EX_TABLE(8 ## n ## 7b, dst_error); .text .stabs "arch/powerpc/lib/",N_SO,0,0,0f @@ -263,14 +260,11 @@ dst_error: stw r0,0(r8) blr - .section __ex_table,"a" - .align 2 - .long 70b,src_error - .long 71b,dst_error - .long 72b,src_error - .long 73b,dst_error - .long 54b,dst_error - .text + EX_TABLE(70b, src_error); + EX_TABLE(71b, dst_error); + EX_TABLE(72b, src_error); + EX_TABLE(73b, dst_error); + EX_TABLE(54b, dst_error); /* * this stuff handles faults in the cacheline loop and branches to either @@ -291,12 +285,11 @@ dst_error: #endif #endif - .section __ex_table,"a" - .align 2 - .long 30b,src_error - .long 31b,dst_error - .long 40b,src_error - .long 41b,dst_error - .long 50b,src_error - .long 51b,dst_error + EX_TABLE(30b, src_error); + EX_TABLE(31b, dst_error); + EX_TABLE(40b, src_error); + EX_TABLE(41b, dst_error); + EX_TABLE(50b, src_error); + EX_TABLE(51b, dst_error); + EXPORT_SYMBOL(csum_partial_copy_generic) diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S index fd91766..d0d311e 100644 --- a/arch/powerpc/lib/checksum_64.S +++ b/arch/powerpc/lib/checksum_64.S @@ -182,34 +182,22 @@ EXPORT_SYMBOL(__csum_partial) .macro srcnr 100: - .section __ex_table,"a" - .align 3 - .llong 100b,.Lsrc_error_nr - .previous + EX_TABLE(100b,.Lsrc_error_nr) .endm .macro source 150: - .section __ex_table,"a" - .align 3 - .llong 150b,.Lsrc_error - .previous + EX_TABLE(150b,.Lsrc_error) .endm .macro dstnr 200: - .section __ex_table,"a" - .align 3 - .llong 200b,.Ldest_error_nr - .previous + EX_TABLE(200b,.Ldest_error_nr) .endm .macro dest 250: - .section __ex_table,"a" - .align 3 - .llong 250b,.Ldest_error - .previous + EX_TABLE(250b,.Ldest_error) .endm /* diff --git a/arch/powerpc/lib/copy_32.S b/arch/powerpc/lib/copy_32.S index 40cce33..ff0d894 100644 --- a/arch/powerpc/lib/copy_32.S +++ b/arch/powerpc/lib/copy_32.S @@ -49,17 +49,14 @@ 9 ## n ## 1: \ addi r5,r5,-(16 * n); \ b 105f; \ -.section __ex_table,"a"; \ - .align 2; \ - .long 8 ## n ## 0b,9 ## n ## 0b; \ - .long 8 ## n ## 1b,9 ## n ## 0b; \ - .long 8 ## n ## 2b,9 ## n ## 0b; \ - .long 8 ## n ## 3b,9 ## n ## 0b; \ - .long 8 ## n ## 4b,9 ## n ## 1b; \ - .long 8 ## n ## 5b,9 ## n ## 1b; \ - .long 8 ## n ## 6b,9 ## n ## 1b; \ - .long 8 ## n ## 7b,9 ## n ## 1b; \ - .text + EX_TABLE(8 ## n ## 0b,9 ## n ## 0b); \ + EX_TABLE(8 ## n ## 1b,9 ## n ## 0b); \ + EX_TABLE(8 ## n ## 2b,9 ## n ## 0b); \ + EX_TABLE(8 ## n ## 3b,9 ## n ## 0b); \ + EX_TABLE(8 ## n ## 4b,9 ## n ## 1b); \ + EX_TABLE(8 ## n ## 5b,9 ## n ## 1b); \ + EX_TABLE(8 ## n ## 6b,9 ## n ## 1b); \ + EX_TABLE(8 ## n ## 7b,9 ## n ## 1b) .text .stabs "arch/powerpc/lib/",N_SO,0,0,0f @@ -323,13 +320,10 @@ _GLOBAL(__copy_tofrom_user) 73: stwu r9,4(r6) bdnz 72b - .section __ex_table,"a" - .align 2 - .long 70b,100f - .long 71b,101f - .long 72b,102f - .long 73b,103f - .text + EX_TABLE(70b,100f) + EX_TABLE(71b,101f) + EX_TABLE(72b,102f) + EX_TABLE(73b,103f) 58: srwi. r0,r5,LG_CACHELINE_BYTES /* # complete cachelines */ clrlwi r5,r5,32-LG_CACHELINE_BYTES @@ -364,10 +358,7 @@ _GLOBAL(__copy_tofrom_user) 53: dcbt r3,r4 54: dcbz r11,r6 - .section __ex_table,"a" - .align 2 - .long 54b,105f - .text + EX_TABLE(54b,105f) /* the main body of the cacheline loop */ COPY_16_BYTES_WITHEX(0) #if L1_CACHE_BYTES >= 32 @@ -500,15 +491,13 @@ _GLOBAL(__copy_tofrom_user) bdnz 114b 120: blr - .section __ex_table,"a" - .align 2 - .long 30b,108b - .long 31b,109b - .long 40b,110b - .long 41b,111b - .long 130b,132b - .long 131b,120b - .long 112b,120b - .long 114b,120b - .text + EX_TABLE(30b,108b) + EX_TABLE(31b,109b) + EX_TABLE(40b,110b) + EX_TABLE(41b,111b) + EX_TABLE(130b,132b) + EX_TABLE(131b,120b) + EX_TABLE(112b,120b) + EX_TABLE(114b,120b) + EXPORT_SYMBOL(__copy_tofrom_user) diff --git a/arch/powerpc/lib/copyuser_64.S b/arch/powerpc/lib/copyuser_64.S index 60386b2..aee6e24 100644 --- a/arch/powerpc/lib/copyuser_64.S +++ b/arch/powerpc/lib/copyuser_64.S @@ -394,70 +394,66 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) 192: blr /* #bytes not copied in r3 */ - .section __ex_table,"a" - .align 3 - .llong 20b,120b - .llong 220b,320b - .llong 21b,121b - .llong 221b,321b - .llong 70b,170b - .llong 270b,370b - .llong 22b,122b - .llong 222b,322b - .llong 71b,171b - .llong 271b,371b - .llong 72b,172b - .llong 272b,372b - .llong 244b,344b - .llong 245b,345b - .llong 23b,123b - .llong 73b,173b - .llong 44b,144b - .llong 74b,174b - .llong 45b,145b - .llong 75b,175b - .llong 24b,124b - .llong 25b,125b - .llong 26b,126b - .llong 27b,127b - .llong 28b,128b - .llong 29b,129b - .llong 30b,130b - .llong 31b,131b - .llong 32b,132b - .llong 76b,176b - .llong 33b,133b - .llong 77b,177b - .llong 78b,178b - .llong 79b,179b - .llong 80b,180b - .llong 34b,134b - .llong 94b,194b - .llong 95b,195b - .llong 96b,196b - .llong 35b,135b - .llong 81b,181b - .llong 36b,136b - .llong 82b,182b - .llong 37b,137b - .llong 83b,183b - .llong 38b,138b - .llong 39b,139b - .llong 84b,184b - .llong 85b,185b - .llong 40b,140b - .llong 86b,186b - .llong 41b,141b - .llong 87b,187b - .llong 42b,142b - .llong 88b,188b - .llong 43b,143b - .llong 89b,189b - .llong 90b,190b - .llong 91b,191b - .llong 92b,192b - - .text + EX_TABLE(20b,120b) + EX_TABLE(220b,320b) + EX_TABLE(21b,121b) + EX_TABLE(221b,321b) + EX_TABLE(70b,170b) + EX_TABLE(270b,370b) + EX_TABLE(22b,122b) + EX_TABLE(222b,322b) + EX_TABLE(71b,171b) + EX_TABLE(271b,371b) + EX_TABLE(72b,172b) + EX_TABLE(272b,372b) + EX_TABLE(244b,344b) + EX_TABLE(245b,345b) + EX_TABLE(23b,123b) + EX_TABLE(73b,173b) + EX_TABLE(44b,144b) + EX_TABLE(74b,174b) + EX_TABLE(45b,145b) + EX_TABLE(75b,175b) + EX_TABLE(24b,124b) + EX_TABLE(25b,125b) + EX_TABLE(26b,126b) + EX_TABLE(27b,127b) + EX_TABLE(28b,128b) + EX_TABLE(29b,129b) + EX_TABLE(30b,130b) + EX_TABLE(31b,131b) + EX_TABLE(32b,132b) + EX_TABLE(76b,176b) + EX_TABLE(33b,133b) + EX_TABLE(77b,177b) + EX_TABLE(78b,178b) + EX_TABLE(79b,179b) + EX_TABLE(80b,180b) + EX_TABLE(34b,134b) + EX_TABLE(94b,194b) + EX_TABLE(95b,195b) + EX_TABLE(96b,196b) + EX_TABLE(35b,135b) + EX_TABLE(81b,181b) + EX_TABLE(36b,136b) + EX_TABLE(82b,182b) + EX_TABLE(37b,137b) + EX_TABLE(83b,183b) + EX_TABLE(38b,138b) + EX_TABLE(39b,139b) + EX_TABLE(84b,184b) + EX_TABLE(85b,185b) + EX_TABLE(40b,140b) + EX_TABLE(86b,186b) + EX_TABLE(41b,141b) + EX_TABLE(87b,187b) + EX_TABLE(42b,142b) + EX_TABLE(88b,188b) + EX_TABLE(43b,143b) + EX_TABLE(89b,189b) + EX_TABLE(90b,190b) + EX_TABLE(91b,191b) + EX_TABLE(92b,192b) /* * Routine to copy a whole page of data, optimized for POWER4. @@ -598,78 +594,77 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) li r5,4096 b .Ldst_aligned - .section __ex_table,"a" - .align 3 - .llong 20b,100b - .llong 21b,100b - .llong 22b,100b - .llong 23b,100b - .llong 24b,100b - .llong 25b,100b - .llong 26b,100b - .llong 27b,100b - .llong 28b,100b - .llong 29b,100b - .llong 30b,100b - .llong 31b,100b - .llong 32b,100b - .llong 33b,100b - .llong 34b,100b - .llong 35b,100b - .llong 36b,100b - .llong 37b,100b - .llong 38b,100b - .llong 39b,100b - .llong 40b,100b - .llong 41b,100b - .llong 42b,100b - .llong 43b,100b - .llong 44b,100b - .llong 45b,100b - .llong 46b,100b - .llong 47b,100b - .llong 48b,100b - .llong 49b,100b - .llong 50b,100b - .llong 51b,100b - .llong 52b,100b - .llong 53b,100b - .llong 54b,100b - .llong 55b,100b - .llong 56b,100b - .llong 57b,100b - .llong 58b,100b - .llong 59b,100b - .llong 60b,100b - .llong 61b,100b - .llong 62b,100b - .llong 63b,100b - .llong 64b,100b - .llong 65b,100b - .llong 66b,100b - .llong 67b,100b - .llong 68b,100b - .llong 69b,100b - .llong 70b,100b - .llong 71b,100b - .llong 72b,100b - .llong 73b,100b - .llong 74b,100b - .llong 75b,100b - .llong 76b,100b - .llong 77b,100b - .llong 78b,100b - .llong 79b,100b - .llong 80b,100b - .llong 81b,100b - .llong 82b,100b - .llong 83b,100b - .llong 84b,100b - .llong 85b,100b - .llong 86b,100b - .llong 87b,100b - .llong 88b,100b - .llong 89b,100b - .llong 90b,100b - .llong 91b,100b + EX_TABLE(20b,100b) + EX_TABLE(21b,100b) + EX_TABLE(22b,100b) + EX_TABLE(23b,100b) + EX_TABLE(24b,100b) + EX_TABLE(25b,100b) + EX_TABLE(26b,100b) + EX_TABLE(27b,100b) + EX_TABLE(28b,100b) + EX_TABLE(29b,100b) + EX_TABLE(30b,100b) + EX_TABLE(31b,100b) + EX_TABLE(32b,100b) + EX_TABLE(33b,100b) + EX_TABLE(34b,100b) + EX_TABLE(35b,100b) + EX_TABLE(36b,100b) + EX_TABLE(37b,100b) + EX_TABLE(38b,100b) + EX_TABLE(39b,100b) + EX_TABLE(40b,100b) + EX_TABLE(41b,100b) + EX_TABLE(42b,100b) + EX_TABLE(43b,100b) + EX_TABLE(44b,100b) + EX_TABLE(45b,100b) + EX_TABLE(46b,100b) + EX_TABLE(47b,100b) + EX_TABLE(48b,100b) + EX_TABLE(49b,100b) + EX_TABLE(50b,100b) + EX_TABLE(51b,100b) + EX_TABLE(52b,100b) + EX_TABLE(53b,100b) + EX_TABLE(54b,100b) + EX_TABLE(55b,100b) + EX_TABLE(56b,100b) + EX_TABLE(57b,100b) + EX_TABLE(58b,100b) + EX_TABLE(59b,100b) + EX_TABLE(60b,100b) + EX_TABLE(61b,100b) + EX_TABLE(62b,100b) + EX_TABLE(63b,100b) + EX_TABLE(64b,100b) + EX_TABLE(65b,100b) + EX_TABLE(66b,100b) + EX_TABLE(67b,100b) + EX_TABLE(68b,100b) + EX_TABLE(69b,100b) + EX_TABLE(70b,100b) + EX_TABLE(71b,100b) + EX_TABLE(72b,100b) + EX_TABLE(73b,100b) + EX_TABLE(74b,100b) + EX_TABLE(75b,100b) + EX_TABLE(76b,100b) + EX_TABLE(77b,100b) + EX_TABLE(78b,100b) + EX_TABLE(79b,100b) + EX_TABLE(80b,100b) + EX_TABLE(81b,100b) + EX_TABLE(82b,100b) + EX_TABLE(83b,100b) + EX_TABLE(84b,100b) + EX_TABLE(85b,100b) + EX_TABLE(86b,100b) + EX_TABLE(87b,100b) + EX_TABLE(88b,100b) + EX_TABLE(89b,100b) + EX_TABLE(90b,100b) + EX_TABLE(91b,100b) + EXPORT_SYMBOL(__copy_tofrom_user) diff --git a/arch/powerpc/lib/copyuser_power7.S b/arch/powerpc/lib/copyuser_power7.S index da0c568..a24b403 100644 --- a/arch/powerpc/lib/copyuser_power7.S +++ b/arch/powerpc/lib/copyuser_power7.S @@ -29,35 +29,23 @@ .macro err1 100: - .section __ex_table,"a" - .align 3 - .llong 100b,.Ldo_err1 - .previous + EX_TABLE(100b,.Ldo_err1) .endm .macro err2 200: - .section __ex_table,"a" - .align 3 - .llong 200b,.Ldo_err2 - .previous + EX_TABLE(200b,.Ldo_err2) .endm #ifdef CONFIG_ALTIVEC .macro err3 300: - .section __ex_table,"a" - .align 3 - .llong 300b,.Ldo_err3 - .previous + EX_TABLE(300b,.Ldo_err3) .endm .macro err4 400: - .section __ex_table,"a" - .align 3 - .llong 400b,.Ldo_err4 - .previous + EX_TABLE(400b,.Ldo_err4) .endm diff --git a/arch/powerpc/lib/ldstfp.S b/arch/powerpc/lib/ldstfp.S index 5d0cdbf..a58777c 100644 --- a/arch/powerpc/lib/ldstfp.S +++ b/arch/powerpc/lib/ldstfp.S @@ -21,18 +21,12 @@ #define STKFRM (PPC_MIN_STKFRM + 16) - .macro extab instr,handler - .section __ex_table,"a" - PPC_LONG \instr,\handler - .previous - .endm - .macro inst32 op reg = 0 .rept 32 20: \op reg,0,r4 b 3f - extab 20b,99f + EX_TABLE(20b,99f) reg = reg + 1 .endr .endm @@ -100,7 +94,7 @@ _GLOBAL(do_lfs) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) /* Load FP reg N from double at *p. N is in r3, p in r4. */ _GLOBAL(do_lfd) @@ -127,7 +121,7 @@ _GLOBAL(do_lfd) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) /* Store FP reg N to float at *p. N is in r3, p in r4. */ _GLOBAL(do_stfs) @@ -154,7 +148,7 @@ _GLOBAL(do_stfs) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) /* Store FP reg N to double at *p. N is in r3, p in r4. */ _GLOBAL(do_stfd) @@ -181,7 +175,7 @@ _GLOBAL(do_stfd) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) #ifdef CONFIG_ALTIVEC /* Get the contents of vrN into v0; N is in r3. */ @@ -248,7 +242,7 @@ _GLOBAL(do_lvx) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) /* Store vector reg N to *p. N is in r3, p in r4. */ _GLOBAL(do_stvx) @@ -276,7 +270,7 @@ _GLOBAL(do_stvx) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) #endif /* CONFIG_ALTIVEC */ #ifdef CONFIG_VSX @@ -344,7 +338,7 @@ _GLOBAL(do_lxvd2x) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) /* Store VSX reg N to vector doubleword *p. N is in r3, p in r4. */ _GLOBAL(do_stxvd2x) @@ -372,7 +366,7 @@ _GLOBAL(do_stxvd2x) mr r3,r9 addi r1,r1,STKFRM blr - extab 2b,3b + EX_TABLE(2b,3b) #endif /* CONFIG_VSX */ diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index 3362299..9c78a9c 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -15,6 +15,7 @@ #include <asm/sstep.h> #include <asm/processor.h> #include <asm/uaccess.h> +#include <asm/cpu_has_feature.h> #include <asm/cputable.h> extern char system_call_common[]; @@ -493,10 +494,7 @@ static int __kprobes do_vsx_store(int rn, int (*func)(int, unsigned long), "3: li %0,%4\n" \ " b 2b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,3b\n" \ - ".previous" \ + EX_TABLE(1b, 3b) \ : "=r" (err), "=r" (cr) \ : "r" (x), "r" (addr), "i" (-EFAULT), "0" (err)) @@ -508,10 +506,7 @@ static int __kprobes do_vsx_store(int rn, int (*func)(int, unsigned long), "3: li %0,%3\n" \ " b 2b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,3b\n" \ - ".previous" \ + EX_TABLE(1b, 3b) \ : "=r" (err), "=r" (x) \ : "r" (addr), "i" (-EFAULT), "0" (err)) @@ -523,10 +518,7 @@ static int __kprobes do_vsx_store(int rn, int (*func)(int, unsigned long), "3: li %0,%3\n" \ " b 2b\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,3b\n" \ - ".previous" \ + EX_TABLE(1b, 3b) \ : "=r" (err) \ : "r" (addr), "i" (-EFAULT), "0" (err)) diff --git a/arch/powerpc/lib/string.S b/arch/powerpc/lib/string.S index d13e076..a787776 100644 --- a/arch/powerpc/lib/string.S +++ b/arch/powerpc/lib/string.S @@ -13,8 +13,6 @@ #include <asm/ppc_asm.h> #include <asm/export.h> - .section __ex_table,"a" - PPC_LONG_ALIGN .text /* This clears out any unused part of the destination buffer, @@ -125,10 +123,9 @@ _GLOBAL(__clear_user) 92: mfctr r3 blr - .section __ex_table,"a" - PPC_LONG 11b,90b - PPC_LONG 1b,91b - PPC_LONG 8b,92b - .text + EX_TABLE(11b, 90b) + EX_TABLE(1b, 91b) + EX_TABLE(8b, 92b) + EXPORT_SYMBOL(__clear_user) #endif diff --git a/arch/powerpc/lib/string_64.S b/arch/powerpc/lib/string_64.S index 57ace35..c100f4d 100644 --- a/arch/powerpc/lib/string_64.S +++ b/arch/powerpc/lib/string_64.S @@ -19,6 +19,7 @@ */ #include <asm/ppc_asm.h> +#include <asm/linkage.h> #include <asm/asm-offsets.h> #include <asm/export.h> @@ -41,26 +42,17 @@ PPC64_CACHES: .macro err1 100: - .section __ex_table,"a" - .align 3 - .llong 100b,.Ldo_err1 - .previous + EX_TABLE(100b,.Ldo_err1) .endm .macro err2 200: - .section __ex_table,"a" - .align 3 - .llong 200b,.Ldo_err2 - .previous + EX_TABLE(200b,.Ldo_err2) .endm .macro err3 300: - .section __ex_table,"a" - .align 3 - .llong 300b,.Ldo_err3 - .previous + EX_TABLE(300b,.Ldo_err3) .endm .Ldo_err1: diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index 1a4e570..7414034 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -7,7 +7,8 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) obj-y := fault.o mem.o pgtable.o mmap.o \ - init_$(BITS).o pgtable_$(BITS).o + init_$(BITS).o pgtable_$(BITS).o \ + init-common.o obj-$(CONFIG_PPC_MMU_NOHASH) += mmu_context_nohash.o tlb_nohash.o \ tlb_nohash_low.o obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(BITS)e.o @@ -42,3 +43,5 @@ obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o obj-$(CONFIG_HIGHMEM) += highmem.o obj-$(CONFIG_PPC_COPRO_BASE) += copro_fault.o obj-$(CONFIG_SPAPR_TCE_IOMMU) += mmu_context_iommu.o +obj-$(CONFIG_PPC_PTDUMP) += dump_linuxpagetables.o +obj-$(CONFIG_PPC_HTDUMP) += dump_hashpagetable.o diff --git a/arch/powerpc/mm/copro_fault.c b/arch/powerpc/mm/copro_fault.c index 362954f..aaa7ec6 100644 --- a/arch/powerpc/mm/copro_fault.c +++ b/arch/powerpc/mm/copro_fault.c @@ -134,6 +134,9 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb) pr_debug("%s: invalid region access at %016llx\n", __func__, ea); return 1; } + /* Bad address */ + if (!vsid) + return 1; vsid = (vsid << slb_vsid_shift(ssize)) | vsidkey; diff --git a/arch/powerpc/mm/dump_hashpagetable.c b/arch/powerpc/mm/dump_hashpagetable.c new file mode 100644 index 0000000..d979709 --- /dev/null +++ b/arch/powerpc/mm/dump_hashpagetable.c @@ -0,0 +1,551 @@ +/* + * Copyright 2016, Rashmica Gupta, IBM Corp. + * + * This traverses the kernel virtual memory and dumps the pages that are in + * the hash pagetable, along with their flags to + * /sys/kernel/debug/kernel_hash_pagetable. + * + * If radix is enabled then there is no hash page table and so no debugfs file + * is generated. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 + * of the License. + */ +#include <linux/debugfs.h> +#include <linux/fs.h> +#include <linux/io.h> +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/seq_file.h> +#include <asm/fixmap.h> +#include <asm/pgtable.h> +#include <linux/const.h> +#include <asm/page.h> +#include <asm/pgalloc.h> +#include <asm/plpar_wrappers.h> +#include <linux/memblock.h> +#include <asm/firmware.h> + +struct pg_state { + struct seq_file *seq; + const struct addr_marker *marker; + unsigned long start_address; + unsigned int level; + u64 current_flags; +}; + +struct addr_marker { + unsigned long start_address; + const char *name; +}; + +static struct addr_marker address_markers[] = { + { 0, "Start of kernel VM" }, + { 0, "vmalloc() Area" }, + { 0, "vmalloc() End" }, + { 0, "isa I/O start" }, + { 0, "isa I/O end" }, + { 0, "phb I/O start" }, + { 0, "phb I/O end" }, + { 0, "I/O remap start" }, + { 0, "I/O remap end" }, + { 0, "vmemmap start" }, + { -1, NULL }, +}; + +struct flag_info { + u64 mask; + u64 val; + const char *set; + const char *clear; + bool is_val; + int shift; +}; + +static const struct flag_info v_flag_array[] = { + { + .mask = SLB_VSID_B, + .val = SLB_VSID_B_256M, + .set = "ssize: 256M", + .clear = "ssize: 1T ", + }, { + .mask = HPTE_V_SECONDARY, + .val = HPTE_V_SECONDARY, + .set = "secondary", + .clear = "primary ", + }, { + .mask = HPTE_V_VALID, + .val = HPTE_V_VALID, + .set = "valid ", + .clear = "invalid", + }, { + .mask = HPTE_V_BOLTED, + .val = HPTE_V_BOLTED, + .set = "bolted", + .clear = "", + } +}; + +static const struct flag_info r_flag_array[] = { + { + .mask = HPTE_R_PP0 | HPTE_R_PP, + .val = PP_RWXX, + .set = "prot:RW--", + }, { + .mask = HPTE_R_PP0 | HPTE_R_PP, + .val = PP_RWRX, + .set = "prot:RWR-", + }, { + .mask = HPTE_R_PP0 | HPTE_R_PP, + .val = PP_RWRW, + .set = "prot:RWRW", + }, { + .mask = HPTE_R_PP0 | HPTE_R_PP, + .val = PP_RXRX, + .set = "prot:R-R-", + }, { + .mask = HPTE_R_PP0 | HPTE_R_PP, + .val = PP_RXXX, + .set = "prot:R---", + }, { + .mask = HPTE_R_KEY_HI | HPTE_R_KEY_LO, + .val = HPTE_R_KEY_HI | HPTE_R_KEY_LO, + .set = "key", + .clear = "", + .is_val = true, + }, { + .mask = HPTE_R_R, + .val = HPTE_R_R, + .set = "ref", + .clear = " ", + }, { + .mask = HPTE_R_C, + .val = HPTE_R_C, + .set = "changed", + .clear = " ", + }, { + .mask = HPTE_R_N, + .val = HPTE_R_N, + .set = "no execute", + }, { + .mask = HPTE_R_WIMG, + .val = HPTE_R_W, + .set = "writethru", + }, { + .mask = HPTE_R_WIMG, + .val = HPTE_R_I, + .set = "no cache", + }, { + .mask = HPTE_R_WIMG, + .val = HPTE_R_G, + .set = "guarded", + } +}; + +static int calculate_pagesize(struct pg_state *st, int ps, char s[]) +{ + static const char units[] = "BKMGTPE"; + const char *unit = units; + + while (ps > 9 && unit[1]) { + ps -= 10; + unit++; + } + seq_printf(st->seq, " %s_ps: %i%c\t", s, 1<<ps, *unit); + return ps; +} + +static void dump_flag_info(struct pg_state *st, const struct flag_info + *flag, u64 pte, int num) +{ + unsigned int i; + + for (i = 0; i < num; i++, flag++) { + const char *s = NULL; + u64 val; + + /* flag not defined so don't check it */ + if (flag->mask == 0) + continue; + /* Some 'flags' are actually values */ + if (flag->is_val) { + val = pte & flag->val; + if (flag->shift) + val = val >> flag->shift; + seq_printf(st->seq, " %s:%llx", flag->set, val); + } else { + if ((pte & flag->mask) == flag->val) + s = flag->set; + else + s = flag->clear; + if (s) + seq_printf(st->seq, " %s", s); + } + } +} + +static void dump_hpte_info(struct pg_state *st, unsigned long ea, u64 v, u64 r, + unsigned long rpn, int bps, int aps, unsigned long lp) +{ + int aps_index; + + while (ea >= st->marker[1].start_address) { + st->marker++; + seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); + } + seq_printf(st->seq, "0x%lx:\t", ea); + seq_printf(st->seq, "AVPN:%llx\t", HPTE_V_AVPN_VAL(v)); + dump_flag_info(st, v_flag_array, v, ARRAY_SIZE(v_flag_array)); + seq_printf(st->seq, " rpn: %lx\t", rpn); + dump_flag_info(st, r_flag_array, r, ARRAY_SIZE(r_flag_array)); + + calculate_pagesize(st, bps, "base"); + aps_index = calculate_pagesize(st, aps, "actual"); + if (aps_index != 2) + seq_printf(st->seq, "LP enc: %lx", lp); + seq_puts(st->seq, "\n"); +} + + +static int native_find(unsigned long ea, int psize, bool primary, u64 *v, u64 + *r) +{ + struct hash_pte *hptep; + unsigned long hash, vsid, vpn, hpte_group, want_v, hpte_v; + int i, ssize = mmu_kernel_ssize; + unsigned long shift = mmu_psize_defs[psize].shift; + + /* calculate hash */ + vsid = get_kernel_vsid(ea, ssize); + vpn = hpt_vpn(ea, vsid, ssize); + hash = hpt_hash(vpn, shift, ssize); + want_v = hpte_encode_avpn(vpn, psize, ssize); + + /* to check in the secondary hash table, we invert the hash */ + if (!primary) + hash = ~hash; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; + for (i = 0; i < HPTES_PER_GROUP; i++) { + hptep = htab_address + hpte_group; + hpte_v = be64_to_cpu(hptep->v); + + if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) { + /* HPTE matches */ + *v = be64_to_cpu(hptep->v); + *r = be64_to_cpu(hptep->r); + return 0; + } + ++hpte_group; + } + return -1; +} + +#ifdef CONFIG_PPC_PSERIES +static int pseries_find(unsigned long ea, int psize, bool primary, u64 *v, u64 *r) +{ + struct hash_pte ptes[4]; + unsigned long vsid, vpn, hash, hpte_group, want_v; + int i, j, ssize = mmu_kernel_ssize; + long lpar_rc = 0; + unsigned long shift = mmu_psize_defs[psize].shift; + + /* calculate hash */ + vsid = get_kernel_vsid(ea, ssize); + vpn = hpt_vpn(ea, vsid, ssize); + hash = hpt_hash(vpn, shift, ssize); + want_v = hpte_encode_avpn(vpn, psize, ssize); + + /* to check in the secondary hash table, we invert the hash */ + if (!primary) + hash = ~hash; + hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + /* see if we can find an entry in the hpte with this hash */ + for (i = 0; i < HPTES_PER_GROUP; i += 4, hpte_group += 4) { + lpar_rc = plpar_pte_read_4(0, hpte_group, (void *)ptes); + + if (lpar_rc != H_SUCCESS) + continue; + for (j = 0; j < 4; j++) { + if (HPTE_V_COMPARE(ptes[j].v, want_v) && + (ptes[j].v & HPTE_V_VALID)) { + /* HPTE matches */ + *v = ptes[j].v; + *r = ptes[j].r; + return 0; + } + } + } + return -1; +} +#endif + +static void decode_r(int bps, unsigned long r, unsigned long *rpn, int *aps, + unsigned long *lp_bits) +{ + struct mmu_psize_def entry; + unsigned long arpn, mask, lp; + int penc = -2, idx = 0, shift; + + /*. + * The LP field has 8 bits. Depending on the actual page size, some of + * these bits are concatenated with the APRN to get the RPN. The rest + * of the bits in the LP field is the LP value and is an encoding for + * the base page size and the actual page size. + * + * - find the mmu entry for our base page size + * - go through all page encodings and use the associated mask to + * find an encoding that matches our encoding in the LP field. + */ + arpn = (r & HPTE_R_RPN) >> HPTE_R_RPN_SHIFT; + lp = arpn & 0xff; + + entry = mmu_psize_defs[bps]; + while (idx < MMU_PAGE_COUNT) { + penc = entry.penc[idx]; + if ((penc != -1) && (mmu_psize_defs[idx].shift)) { + shift = mmu_psize_defs[idx].shift - HPTE_R_RPN_SHIFT; + mask = (0x1 << (shift)) - 1; + if ((lp & mask) == penc) { + *aps = mmu_psize_to_shift(idx); + *lp_bits = lp & mask; + *rpn = arpn >> shift; + return; + } + } + idx++; + } +} + +static int base_hpte_find(unsigned long ea, int psize, bool primary, u64 *v, + u64 *r) +{ +#ifdef CONFIG_PPC_PSERIES + if (firmware_has_feature(FW_FEATURE_LPAR)) + return pseries_find(ea, psize, primary, v, r); +#endif + return native_find(ea, psize, primary, v, r); +} + +static unsigned long hpte_find(struct pg_state *st, unsigned long ea, int psize) +{ + unsigned long slot; + u64 v = 0, r = 0; + unsigned long rpn, lp_bits; + int base_psize = 0, actual_psize = 0; + + if (ea <= PAGE_OFFSET) + return -1; + + /* Look in primary table */ + slot = base_hpte_find(ea, psize, true, &v, &r); + + /* Look in secondary table */ + if (slot == -1) + slot = base_hpte_find(ea, psize, true, &v, &r); + + /* No entry found */ + if (slot == -1) + return -1; + + /* + * We found an entry in the hash page table: + * - check that this has the same base page + * - find the actual page size + * - find the RPN + */ + base_psize = mmu_psize_to_shift(psize); + + if ((v & HPTE_V_LARGE) == HPTE_V_LARGE) { + decode_r(psize, r, &rpn, &actual_psize, &lp_bits); + } else { + /* 4K actual page size */ + actual_psize = 12; + rpn = (r & HPTE_R_RPN) >> HPTE_R_RPN_SHIFT; + /* In this case there are no LP bits */ + lp_bits = -1; + } + /* + * We didn't find a matching encoding, so the PTE we found isn't for + * this address. + */ + if (actual_psize == -1) + return -1; + + dump_hpte_info(st, ea, v, r, rpn, base_psize, actual_psize, lp_bits); + return 0; +} + +static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start) +{ + pte_t *pte = pte_offset_kernel(pmd, 0); + unsigned long addr, pteval, psize; + int i, status; + + for (i = 0; i < PTRS_PER_PTE; i++, pte++) { + addr = start + i * PAGE_SIZE; + pteval = pte_val(*pte); + + if (addr < VMALLOC_END) + psize = mmu_vmalloc_psize; + else + psize = mmu_io_psize; +#ifdef CONFIG_PPC_64K_PAGES + /* check for secret 4K mappings */ + if (((pteval & H_PAGE_COMBO) == H_PAGE_COMBO) || + ((pteval & H_PAGE_4K_PFN) == H_PAGE_4K_PFN)) + psize = mmu_io_psize; +#endif + /* check for hashpte */ + status = hpte_find(st, addr, psize); + + if (((pteval & H_PAGE_HASHPTE) != H_PAGE_HASHPTE) + && (status != -1)) { + /* found a hpte that is not in the linux page tables */ + seq_printf(st->seq, "page probably bolted before linux" + " pagetables were set: addr:%lx, pteval:%lx\n", + addr, pteval); + } + } +} + +static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start) +{ + pmd_t *pmd = pmd_offset(pud, 0); + unsigned long addr; + unsigned int i; + + for (i = 0; i < PTRS_PER_PMD; i++, pmd++) { + addr = start + i * PMD_SIZE; + if (!pmd_none(*pmd)) + /* pmd exists */ + walk_pte(st, pmd, addr); + } +} + +static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start) +{ + pud_t *pud = pud_offset(pgd, 0); + unsigned long addr; + unsigned int i; + + for (i = 0; i < PTRS_PER_PUD; i++, pud++) { + addr = start + i * PUD_SIZE; + if (!pud_none(*pud)) + /* pud exists */ + walk_pmd(st, pud, addr); + } +} + +static void walk_pagetables(struct pg_state *st) +{ + pgd_t *pgd = pgd_offset_k(0UL); + unsigned int i; + unsigned long addr; + + /* + * Traverse the linux pagetable structure and dump pages that are in + * the hash pagetable. + */ + for (i = 0; i < PTRS_PER_PGD; i++, pgd++) { + addr = KERN_VIRT_START + i * PGDIR_SIZE; + if (!pgd_none(*pgd)) + /* pgd exists */ + walk_pud(st, pgd, addr); + } +} + + +static void walk_linearmapping(struct pg_state *st) +{ + unsigned long addr; + + /* + * Traverse the linear mapping section of virtual memory and dump pages + * that are in the hash pagetable. + */ + unsigned long psize = 1 << mmu_psize_defs[mmu_linear_psize].shift; + + for (addr = PAGE_OFFSET; addr < PAGE_OFFSET + + memblock_phys_mem_size(); addr += psize) + hpte_find(st, addr, mmu_linear_psize); +} + +static void walk_vmemmap(struct pg_state *st) +{ +#ifdef CONFIG_SPARSEMEM_VMEMMAP + struct vmemmap_backing *ptr = vmemmap_list; + + /* + * Traverse the vmemmaped memory and dump pages that are in the hash + * pagetable. + */ + while (ptr->list) { + hpte_find(st, ptr->virt_addr, mmu_vmemmap_psize); + ptr = ptr->list; + } + seq_puts(st->seq, "---[ vmemmap end ]---\n"); +#endif +} + +static void populate_markers(void) +{ + address_markers[0].start_address = PAGE_OFFSET; + address_markers[1].start_address = VMALLOC_START; + address_markers[2].start_address = VMALLOC_END; + address_markers[3].start_address = ISA_IO_BASE; + address_markers[4].start_address = ISA_IO_END; + address_markers[5].start_address = PHB_IO_BASE; + address_markers[6].start_address = PHB_IO_END; + address_markers[7].start_address = IOREMAP_BASE; + address_markers[8].start_address = IOREMAP_END; +#ifdef CONFIG_PPC_STD_MMU_64 + address_markers[9].start_address = H_VMEMMAP_BASE; +#else + address_markers[9].start_address = VMEMMAP_BASE; +#endif +} + +static int ptdump_show(struct seq_file *m, void *v) +{ + struct pg_state st = { + .seq = m, + .start_address = PAGE_OFFSET, + .marker = address_markers, + }; + /* + * Traverse the 0xc, 0xd and 0xf areas of the kernel virtual memory and + * dump pages that are in the hash pagetable. + */ + walk_linearmapping(&st); + walk_pagetables(&st); + walk_vmemmap(&st); + return 0; +} + +static int ptdump_open(struct inode *inode, struct file *file) +{ + return single_open(file, ptdump_show, NULL); +} + +static const struct file_operations ptdump_fops = { + .open = ptdump_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int ptdump_init(void) +{ + struct dentry *debugfs_file; + + if (!radix_enabled()) { + populate_markers(); + debugfs_file = debugfs_create_file("kernel_hash_pagetable", + 0400, NULL, NULL, &ptdump_fops); + return debugfs_file ? 0 : -ENOMEM; + } + return 0; +} +device_initcall(ptdump_init); diff --git a/arch/powerpc/mm/dump_linuxpagetables.c b/arch/powerpc/mm/dump_linuxpagetables.c new file mode 100644 index 0000000..49abaf4 --- /dev/null +++ b/arch/powerpc/mm/dump_linuxpagetables.c @@ -0,0 +1,442 @@ +/* + * Copyright 2016, Rashmica Gupta, IBM Corp. + * + * This traverses the kernel pagetables and dumps the + * information about the used sections of memory to + * /sys/kernel/debug/kernel_pagetables. + * + * Derived from the arm64 implementation: + * Copyright (c) 2014, The Linux Foundation, Laura Abbott. + * (C) Copyright 2008 Intel Corporation, Arjan van de Ven. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 + * of the License. + */ +#include <linux/debugfs.h> +#include <linux/fs.h> +#include <linux/io.h> +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/seq_file.h> +#include <asm/fixmap.h> +#include <asm/pgtable.h> +#include <linux/const.h> +#include <asm/page.h> +#include <asm/pgalloc.h> + +/* + * To visualise what is happening, + * + * - PTRS_PER_P** = how many entries there are in the corresponding P** + * - P**_SHIFT = how many bits of the address we use to index into the + * corresponding P** + * - P**_SIZE is how much memory we can access through the table - not the + * size of the table itself. + * P**={PGD, PUD, PMD, PTE} + * + * + * Each entry of the PGD points to a PUD. Each entry of a PUD points to a + * PMD. Each entry of a PMD points to a PTE. And every PTE entry points to + * a page. + * + * In the case where there are only 3 levels, the PUD is folded into the + * PGD: every PUD has only one entry which points to the PMD. + * + * The page dumper groups page table entries of the same type into a single + * description. It uses pg_state to track the range information while + * iterating over the PTE entries. When the continuity is broken it then + * dumps out a description of the range - ie PTEs that are virtually contiguous + * with the same PTE flags are chunked together. This is to make it clear how + * different areas of the kernel virtual memory are used. + * + */ +struct pg_state { + struct seq_file *seq; + const struct addr_marker *marker; + unsigned long start_address; + unsigned int level; + u64 current_flags; +}; + +struct addr_marker { + unsigned long start_address; + const char *name; +}; + +static struct addr_marker address_markers[] = { + { 0, "Start of kernel VM" }, + { 0, "vmalloc() Area" }, + { 0, "vmalloc() End" }, + { 0, "isa I/O start" }, + { 0, "isa I/O end" }, + { 0, "phb I/O start" }, + { 0, "phb I/O end" }, + { 0, "I/O remap start" }, + { 0, "I/O remap end" }, + { 0, "vmemmap start" }, + { -1, NULL }, +}; + +struct flag_info { + u64 mask; + u64 val; + const char *set; + const char *clear; + bool is_val; + int shift; +}; + +static const struct flag_info flag_array[] = { + { +#ifdef CONFIG_PPC_STD_MMU_64 + .mask = _PAGE_PRIVILEGED, + .val = 0, +#else + .mask = _PAGE_USER, + .val = _PAGE_USER, +#endif + .set = "user", + .clear = " ", + }, { + .mask = _PAGE_RW, + .val = _PAGE_RW, + .set = "rw", + .clear = "ro", + }, { + .mask = _PAGE_EXEC, + .val = _PAGE_EXEC, + .set = " X ", + .clear = " ", + }, { + .mask = _PAGE_PTE, + .val = _PAGE_PTE, + .set = "pte", + .clear = " ", + }, { + .mask = _PAGE_PRESENT, + .val = _PAGE_PRESENT, + .set = "present", + .clear = " ", + }, { +#ifdef CONFIG_PPC_STD_MMU_64 + .mask = H_PAGE_HASHPTE, + .val = H_PAGE_HASHPTE, +#else + .mask = _PAGE_HASHPTE, + .val = _PAGE_HASHPTE, +#endif + .set = "hpte", + .clear = " ", + }, { +#ifndef CONFIG_PPC_STD_MMU_64 + .mask = _PAGE_GUARDED, + .val = _PAGE_GUARDED, + .set = "guarded", + .clear = " ", + }, { +#endif + .mask = _PAGE_DIRTY, + .val = _PAGE_DIRTY, + .set = "dirty", + .clear = " ", + }, { + .mask = _PAGE_ACCESSED, + .val = _PAGE_ACCESSED, + .set = "accessed", + .clear = " ", + }, { +#ifndef CONFIG_PPC_STD_MMU_64 + .mask = _PAGE_WRITETHRU, + .val = _PAGE_WRITETHRU, + .set = "write through", + .clear = " ", + }, { +#endif + .mask = _PAGE_NO_CACHE, + .val = _PAGE_NO_CACHE, + .set = "no cache", + .clear = " ", + }, { +#ifdef CONFIG_PPC_BOOK3S_64 + .mask = H_PAGE_BUSY, + .val = H_PAGE_BUSY, + .set = "busy", + }, { +#ifdef CONFIG_PPC_64K_PAGES + .mask = H_PAGE_COMBO, + .val = H_PAGE_COMBO, + .set = "combo", + }, { + .mask = H_PAGE_4K_PFN, + .val = H_PAGE_4K_PFN, + .set = "4K_pfn", + }, { +#endif + .mask = H_PAGE_F_GIX, + .val = H_PAGE_F_GIX, + .set = "f_gix", + .is_val = true, + .shift = H_PAGE_F_GIX_SHIFT, + }, { + .mask = H_PAGE_F_SECOND, + .val = H_PAGE_F_SECOND, + .set = "f_second", + }, { +#endif + .mask = _PAGE_SPECIAL, + .val = _PAGE_SPECIAL, + .set = "special", + } +}; + +struct pgtable_level { + const struct flag_info *flag; + size_t num; + u64 mask; +}; + +static struct pgtable_level pg_level[] = { + { + }, { /* pgd */ + .flag = flag_array, + .num = ARRAY_SIZE(flag_array), + }, { /* pud */ + .flag = flag_array, + .num = ARRAY_SIZE(flag_array), + }, { /* pmd */ + .flag = flag_array, + .num = ARRAY_SIZE(flag_array), + }, { /* pte */ + .flag = flag_array, + .num = ARRAY_SIZE(flag_array), + }, +}; + +static void dump_flag_info(struct pg_state *st, const struct flag_info + *flag, u64 pte, int num) +{ + unsigned int i; + + for (i = 0; i < num; i++, flag++) { + const char *s = NULL; + u64 val; + + /* flag not defined so don't check it */ + if (flag->mask == 0) + continue; + /* Some 'flags' are actually values */ + if (flag->is_val) { + val = pte & flag->val; + if (flag->shift) + val = val >> flag->shift; + seq_printf(st->seq, " %s:%llx", flag->set, val); + } else { + if ((pte & flag->mask) == flag->val) + s = flag->set; + else + s = flag->clear; + if (s) + seq_printf(st->seq, " %s", s); + } + st->current_flags &= ~flag->mask; + } + if (st->current_flags != 0) + seq_printf(st->seq, " unknown flags:%llx", st->current_flags); +} + +static void dump_addr(struct pg_state *st, unsigned long addr) +{ + static const char units[] = "KMGTPE"; + const char *unit = units; + unsigned long delta; + + seq_printf(st->seq, "0x%016lx-0x%016lx ", st->start_address, addr-1); + delta = (addr - st->start_address) >> 10; + /* Work out what appropriate unit to use */ + while (!(delta & 1023) && unit[1]) { + delta >>= 10; + unit++; + } + seq_printf(st->seq, "%9lu%c", delta, *unit); + +} + +static void note_page(struct pg_state *st, unsigned long addr, + unsigned int level, u64 val) +{ + u64 flag = val & pg_level[level].mask; + /* At first no level is set */ + if (!st->level) { + st->level = level; + st->current_flags = flag; + st->start_address = addr; + seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); + /* + * Dump the section of virtual memory when: + * - the PTE flags from one entry to the next differs. + * - we change levels in the tree. + * - the address is in a different section of memory and is thus + * used for a different purpose, regardless of the flags. + */ + } else if (flag != st->current_flags || level != st->level || + addr >= st->marker[1].start_address) { + + /* Check the PTE flags */ + if (st->current_flags) { + dump_addr(st, addr); + + /* Dump all the flags */ + if (pg_level[st->level].flag) + dump_flag_info(st, pg_level[st->level].flag, + st->current_flags, + pg_level[st->level].num); + + seq_puts(st->seq, "\n"); + } + + /* + * Address indicates we have passed the end of the + * current section of virtual memory + */ + while (addr >= st->marker[1].start_address) { + st->marker++; + seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); + } + st->start_address = addr; + st->current_flags = flag; + st->level = level; + } +} + +static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start) +{ + pte_t *pte = pte_offset_kernel(pmd, 0); + unsigned long addr; + unsigned int i; + + for (i = 0; i < PTRS_PER_PTE; i++, pte++) { + addr = start + i * PAGE_SIZE; + note_page(st, addr, 4, pte_val(*pte)); + + } +} + +static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start) +{ + pmd_t *pmd = pmd_offset(pud, 0); + unsigned long addr; + unsigned int i; + + for (i = 0; i < PTRS_PER_PMD; i++, pmd++) { + addr = start + i * PMD_SIZE; + if (!pmd_none(*pmd)) + /* pmd exists */ + walk_pte(st, pmd, addr); + else + note_page(st, addr, 3, pmd_val(*pmd)); + } +} + +static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start) +{ + pud_t *pud = pud_offset(pgd, 0); + unsigned long addr; + unsigned int i; + + for (i = 0; i < PTRS_PER_PUD; i++, pud++) { + addr = start + i * PUD_SIZE; + if (!pud_none(*pud)) + /* pud exists */ + walk_pmd(st, pud, addr); + else + note_page(st, addr, 2, pud_val(*pud)); + } +} + +static void walk_pagetables(struct pg_state *st) +{ + pgd_t *pgd = pgd_offset_k(0UL); + unsigned int i; + unsigned long addr; + + /* + * Traverse the linux pagetable structure and dump pages that are in + * the hash pagetable. + */ + for (i = 0; i < PTRS_PER_PGD; i++, pgd++) { + addr = KERN_VIRT_START + i * PGDIR_SIZE; + if (!pgd_none(*pgd)) + /* pgd exists */ + walk_pud(st, pgd, addr); + else + note_page(st, addr, 1, pgd_val(*pgd)); + } +} + +static void populate_markers(void) +{ + address_markers[0].start_address = PAGE_OFFSET; + address_markers[1].start_address = VMALLOC_START; + address_markers[2].start_address = VMALLOC_END; + address_markers[3].start_address = ISA_IO_BASE; + address_markers[4].start_address = ISA_IO_END; + address_markers[5].start_address = PHB_IO_BASE; + address_markers[6].start_address = PHB_IO_END; + address_markers[7].start_address = IOREMAP_BASE; + address_markers[8].start_address = IOREMAP_END; +#ifdef CONFIG_PPC_STD_MMU_64 + address_markers[9].start_address = H_VMEMMAP_BASE; +#else + address_markers[9].start_address = VMEMMAP_BASE; +#endif +} + +static int ptdump_show(struct seq_file *m, void *v) +{ + struct pg_state st = { + .seq = m, + .start_address = KERN_VIRT_START, + .marker = address_markers, + }; + /* Traverse kernel page tables */ + walk_pagetables(&st); + note_page(&st, 0, 0, 0); + return 0; +} + + +static int ptdump_open(struct inode *inode, struct file *file) +{ + return single_open(file, ptdump_show, NULL); +} + +static const struct file_operations ptdump_fops = { + .open = ptdump_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void build_pgtable_complete_mask(void) +{ + unsigned int i, j; + + for (i = 0; i < ARRAY_SIZE(pg_level); i++) + if (pg_level[i].flag) + for (j = 0; j < pg_level[i].num; j++) + pg_level[i].mask |= pg_level[i].flag[j].mask; +} + +static int ptdump_init(void) +{ + struct dentry *debugfs_file; + + populate_markers(); + build_pgtable_complete_mask(); + debugfs_file = debugfs_create_file("kernel_pagetables", 0400, NULL, + NULL, &ptdump_fops); + return debugfs_file ? 0 : -ENOMEM; +} +device_initcall(ptdump_init); diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index d0b137d..6fd30ac 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -391,6 +391,20 @@ good_area: if (is_exec) { /* + * An execution fault + no execute ? + * + * On CPUs that don't have CPU_FTR_COHERENT_ICACHE we + * deliberately create NX mappings, and use the fault to do the + * cache flush. This is usually handled in hash_page_do_lazy_icache() + * but we could end up here if that races with a concurrent PTE + * update. In that case we need to fall through here to the VMA + * check below. + */ + if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE) && + (regs->msr & SRR1_ISI_N_OR_G)) + goto bad_area; + + /* * Allow execution from readable areas if the MMU does not * provide separate controls over reading and executing. * @@ -404,6 +418,7 @@ good_area: (cpu_has_feature(CPU_FTR_NOEXECUTE) || !(vma->vm_flags & (VM_READ | VM_WRITE)))) goto bad_area; + #ifdef CONFIG_PPC_STD_MMU /* * protfault should only happen due to us @@ -512,7 +527,7 @@ void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig) /* Are we prepared to handle this fault? */ if ((entry = search_exception_tables(regs->nip)) != NULL) { - regs->nip = entry->fixup; + regs->nip = extable_fixup(entry); return; } diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index ad9fd52..cc33260 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -123,8 +123,9 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize) va |= ssize << 8; sllp = get_sllp_encoding(apsize); va |= sllp << 5; - asm volatile(".long 0x7c000224 | (%0 << 11) | (0 << 21)" - : : "r"(va) : "memory"); + asm volatile(ASM_FTR_IFSET("tlbiel %0", "tlbiel %0,0", %1) + : : "r" (va), "i" (CPU_FTR_ARCH_206) + : "memory"); break; default: /* We need 14 to 14 + i bits of va */ @@ -141,8 +142,9 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize) */ va |= (vpn & 0xfe); va |= 1; /* L */ - asm volatile(".long 0x7c000224 | (%0 << 11) | (1 << 21)" - : : "r"(va) : "memory"); + asm volatile(ASM_FTR_IFSET("tlbiel %0", "tlbiel %0,1", %1) + : : "r" (va), "i" (CPU_FTR_ARCH_206) + : "memory"); break; } diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index a5d3ecd..289df38 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -26,6 +26,8 @@ #ifdef CONFIG_HUGETLB_PAGE #define PAGE_SHIFT_64K 16 +#define PAGE_SHIFT_512K 19 +#define PAGE_SHIFT_8M 23 #define PAGE_SHIFT_16M 24 #define PAGE_SHIFT_16G 34 @@ -38,7 +40,7 @@ unsigned int HPAGE_SHIFT; * implementations may have more than one gpage size, so we need multiple * arrays */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) #define MAX_NUMBER_GPAGES 128 struct psize_gpages { u64 gpage_list[MAX_NUMBER_GPAGES]; @@ -64,14 +66,16 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, { struct kmem_cache *cachep; pte_t *new; - -#ifdef CONFIG_PPC_FSL_BOOK3E int i; - int num_hugepd = 1 << (pshift - pdshift); - cachep = hugepte_cache; -#else - cachep = PGT_CACHE(pdshift - pshift); -#endif + int num_hugepd; + + if (pshift >= pdshift) { + cachep = hugepte_cache; + num_hugepd = 1 << (pshift - pdshift); + } else { + cachep = PGT_CACHE(pdshift - pshift); + num_hugepd = 1; + } new = kmem_cache_zalloc(cachep, GFP_KERNEL); @@ -89,7 +93,7 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, smp_wmb(); spin_lock(&mm->page_table_lock); -#ifdef CONFIG_PPC_FSL_BOOK3E + /* * We have multiple higher-level entries that point to the same * actual pte location. Fill in each as we go and backtrack on error. @@ -100,8 +104,18 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, if (unlikely(!hugepd_none(*hpdp))) break; else +#ifdef CONFIG_PPC_BOOK3S_64 + hpdp->pd = __pa(new) | + (shift_to_mmu_psize(pshift) << 2); +#elif defined(CONFIG_PPC_8xx) + hpdp->pd = __pa(new) | + (pshift == PAGE_SHIFT_8M ? _PMD_PAGE_8M : + _PMD_PAGE_512K) | + _PMD_PRESENT; +#else /* We use the old format for PPC_FSL_BOOK3E */ hpdp->pd = ((unsigned long)new & ~PD_HUGE) | pshift; +#endif } /* If we bailed from the for loop early, an error occurred, clean up */ if (i < num_hugepd) { @@ -109,17 +123,6 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, hpdp->pd = 0; kmem_cache_free(cachep, new); } -#else - if (!hugepd_none(*hpdp)) - kmem_cache_free(cachep, new); - else { -#ifdef CONFIG_PPC_BOOK3S_64 - hpdp->pd = __pa(new) | (shift_to_mmu_psize(pshift) << 2); -#else - hpdp->pd = ((unsigned long)new & ~PD_HUGE) | pshift; -#endif - } -#endif spin_unlock(&mm->page_table_lock); return 0; } @@ -128,7 +131,7 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, * These macros define how to determine which level of the page table holds * the hpdp. */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) #define HUGEPD_PGD_SHIFT PGDIR_SHIFT #define HUGEPD_PUD_SHIFT PUD_SHIFT #else @@ -136,7 +139,6 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, #define HUGEPD_PUD_SHIFT PMD_SHIFT #endif -#ifdef CONFIG_PPC_BOOK3S_64 /* * At this point we do the placement change only for BOOK3S 64. This would * possibly work on other subarchs. @@ -153,6 +155,7 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz addr &= ~(sz-1); pg = pgd_offset(mm, addr); +#ifdef CONFIG_PPC_BOOK3S_64 if (pshift == PGDIR_SHIFT) /* 16GB huge page */ return (pte_t *) pg; @@ -178,32 +181,7 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz hpdp = (hugepd_t *)pm; } } - if (!hpdp) - return NULL; - - BUG_ON(!hugepd_none(*hpdp) && !hugepd_ok(*hpdp)); - - if (hugepd_none(*hpdp) && __hugepte_alloc(mm, hpdp, addr, pdshift, pshift)) - return NULL; - - return hugepte_offset(*hpdp, addr, pdshift); -} - #else - -pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz) -{ - pgd_t *pg; - pud_t *pu; - pmd_t *pm; - hugepd_t *hpdp = NULL; - unsigned pshift = __ffs(sz); - unsigned pdshift = PGDIR_SHIFT; - - addr &= ~(sz-1); - - pg = pgd_offset(mm, addr); - if (pshift >= HUGEPD_PGD_SHIFT) { hpdp = (hugepd_t *)pg; } else { @@ -217,7 +195,7 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz hpdp = (hugepd_t *)pm; } } - +#endif if (!hpdp) return NULL; @@ -228,9 +206,8 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz return hugepte_offset(*hpdp, addr, pdshift); } -#endif -#ifdef CONFIG_PPC_FSL_BOOK3E +#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) /* Build list of addresses of gigantic pages. This function is used in early * boot before the buddy allocator is setup. */ @@ -310,7 +287,11 @@ static int __init do_gpage_early_setup(char *param, char *val, npages = 0; if (npages > MAX_NUMBER_GPAGES) { pr_warn("MMU: %lu pages requested for page " +#ifdef CONFIG_PHYS_ADDR_T_64BIT "size %llu KB, limiting to " +#else + "size %u KB, limiting to " +#endif __stringify(MAX_NUMBER_GPAGES) "\n", npages, size / 1024); npages = MAX_NUMBER_GPAGES; @@ -392,7 +373,7 @@ int alloc_bootmem_huge_page(struct hstate *hstate) } #endif -#ifdef CONFIG_PPC_FSL_BOOK3E +#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) #define HUGEPD_FREELIST_SIZE \ ((PAGE_SIZE - sizeof(struct hugepd_freelist)) / sizeof(pte_t)) @@ -442,6 +423,8 @@ static void hugepd_free(struct mmu_gather *tlb, void *hugepte) } put_cpu_var(hugepd_freelist_cur); } +#else +static inline void hugepd_free(struct mmu_gather *tlb, void *hugepte) {} #endif static void free_hugepd_range(struct mmu_gather *tlb, hugepd_t *hpdp, int pdshift, @@ -453,13 +436,11 @@ static void free_hugepd_range(struct mmu_gather *tlb, hugepd_t *hpdp, int pdshif unsigned long pdmask = ~((1UL << pdshift) - 1); unsigned int num_hugepd = 1; + unsigned int shift = hugepd_shift(*hpdp); -#ifdef CONFIG_PPC_FSL_BOOK3E /* Note: On fsl the hpdp may be the first of several */ - num_hugepd = (1 << (hugepd_shift(*hpdp) - pdshift)); -#else - unsigned int shift = hugepd_shift(*hpdp); -#endif + if (shift > pdshift) + num_hugepd = 1 << (shift - pdshift); start &= pdmask; if (start < floor) @@ -475,11 +456,10 @@ static void free_hugepd_range(struct mmu_gather *tlb, hugepd_t *hpdp, int pdshif for (i = 0; i < num_hugepd; i++, hpdp++) hpdp->pd = 0; -#ifdef CONFIG_PPC_FSL_BOOK3E - hugepd_free(tlb, hugepte); -#else - pgtable_free_tlb(tlb, hugepte, pdshift - shift); -#endif + if (shift >= pdshift) + hugepd_free(tlb, hugepte); + else + pgtable_free_tlb(tlb, hugepte, pdshift - shift); } static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud, @@ -492,6 +472,8 @@ static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud, start = addr; do { + unsigned long more; + pmd = pmd_offset(pud, addr); next = pmd_addr_end(addr, end); if (!is_hugepd(__hugepd(pmd_val(*pmd)))) { @@ -502,15 +484,16 @@ static void hugetlb_free_pmd_range(struct mmu_gather *tlb, pud_t *pud, WARN_ON(!pmd_none_or_clear_bad(pmd)); continue; } -#ifdef CONFIG_PPC_FSL_BOOK3E /* * Increment next by the size of the huge mapping since * there may be more than one entry at this level for a * single hugepage, but all of them point to * the same kmem cache that holds the hugepte. */ - next = addr + (1 << hugepd_shift(*(hugepd_t *)pmd)); -#endif + more = addr + (1 << hugepd_shift(*(hugepd_t *)pmd)); + if (more > next) + next = more; + free_hugepd_range(tlb, (hugepd_t *)pmd, PMD_SHIFT, addr, next, floor, ceiling); } while (addr = next, addr != end); @@ -550,15 +533,17 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd, hugetlb_free_pmd_range(tlb, pud, addr, next, floor, ceiling); } else { -#ifdef CONFIG_PPC_FSL_BOOK3E + unsigned long more; /* * Increment next by the size of the huge mapping since * there may be more than one entry at this level for a * single hugepage, but all of them point to * the same kmem cache that holds the hugepte. */ - next = addr + (1 << hugepd_shift(*(hugepd_t *)pud)); -#endif + more = addr + (1 << hugepd_shift(*(hugepd_t *)pud)); + if (more > next) + next = more; + free_hugepd_range(tlb, (hugepd_t *)pud, PUD_SHIFT, addr, next, floor, ceiling); } @@ -615,15 +600,17 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, continue; hugetlb_free_pud_range(tlb, pgd, addr, next, floor, ceiling); } else { -#ifdef CONFIG_PPC_FSL_BOOK3E + unsigned long more; /* * Increment next by the size of the huge mapping since * there may be more than one entry at the pgd level * for a single hugepage, but all of them point to the * same kmem cache that holds the hugepte. */ - next = addr + (1 << hugepd_shift(*(hugepd_t *)pgd)); -#endif + more = addr + (1 << hugepd_shift(*(hugepd_t *)pgd)); + if (more > next) + next = more; + free_hugepd_range(tlb, (hugepd_t *)pgd, PGDIR_SHIFT, addr, next, floor, ceiling); } @@ -753,12 +740,13 @@ static int __init add_huge_page_size(unsigned long long size) /* Check that it is a page size supported by the hardware and * that it fits within pagetable and slice limits. */ -#ifdef CONFIG_PPC_FSL_BOOK3E - if ((size < PAGE_SIZE) || !is_power_of_4(size)) + if (size <= PAGE_SIZE) return -EINVAL; -#else - if (!is_power_of_2(size) - || (shift > SLICE_HIGH_SHIFT) || (shift <= PAGE_SHIFT)) +#if defined(CONFIG_PPC_FSL_BOOK3E) + if (!is_power_of_4(size)) + return -EINVAL; +#elif !defined(CONFIG_PPC_8xx) + if (!is_power_of_2(size) || (shift > SLICE_HIGH_SHIFT)) return -EINVAL; #endif @@ -791,53 +779,15 @@ static int __init hugepage_setup_sz(char *str) } __setup("hugepagesz=", hugepage_setup_sz); -#ifdef CONFIG_PPC_FSL_BOOK3E struct kmem_cache *hugepte_cache; static int __init hugetlbpage_init(void) { int psize; - for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) { - unsigned shift; - - if (!mmu_psize_defs[psize].shift) - continue; - - shift = mmu_psize_to_shift(psize); - - /* Don't treat normal page sizes as huge... */ - if (shift != PAGE_SHIFT) - if (add_huge_page_size(1ULL << shift) < 0) - continue; - } - - /* - * Create a kmem cache for hugeptes. The bottom bits in the pte have - * size information encoded in them, so align them to allow this - */ - hugepte_cache = kmem_cache_create("hugepte-cache", sizeof(pte_t), - HUGEPD_SHIFT_MASK + 1, 0, NULL); - if (hugepte_cache == NULL) - panic("%s: Unable to create kmem cache for hugeptes\n", - __func__); - - /* Default hpage size = 4M */ - if (mmu_psize_defs[MMU_PAGE_4M].shift) - HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_4M].shift; - else - panic("%s: Unable to set default huge page size\n", __func__); - - - return 0; -} -#else -static int __init hugetlbpage_init(void) -{ - int psize; - +#if !defined(CONFIG_PPC_FSL_BOOK3E) && !defined(CONFIG_PPC_8xx) if (!radix_enabled() && !mmu_has_feature(MMU_FTR_16M_PAGE)) return -ENODEV; - +#endif for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) { unsigned shift; unsigned pdshift; @@ -850,9 +800,9 @@ static int __init hugetlbpage_init(void) if (add_huge_page_size(1ULL << shift) < 0) continue; - if (shift < PMD_SHIFT) + if (shift < HUGEPD_PUD_SHIFT) pdshift = PMD_SHIFT; - else if (shift < PUD_SHIFT) + else if (shift < HUGEPD_PGD_SHIFT) pdshift = PUD_SHIFT; else pdshift = PGDIR_SHIFT; @@ -860,14 +810,38 @@ static int __init hugetlbpage_init(void) * if we have pdshift and shift value same, we don't * use pgt cache for hugepd. */ - if (pdshift != shift) { + if (pdshift > shift) { pgtable_cache_add(pdshift - shift, NULL); if (!PGT_CACHE(pdshift - shift)) panic("hugetlbpage_init(): could not create " "pgtable cache for %d bit pagesize\n", shift); } +#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) + else if (!hugepte_cache) { + /* + * Create a kmem cache for hugeptes. The bottom bits in + * the pte have size information encoded in them, so + * align them to allow this + */ + hugepte_cache = kmem_cache_create("hugepte-cache", + sizeof(pte_t), + HUGEPD_SHIFT_MASK + 1, + 0, NULL); + if (hugepte_cache == NULL) + panic("%s: Unable to create kmem cache " + "for hugeptes\n", __func__); + + } +#endif } +#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) + /* Default hpage size = 4M on FSL_BOOK3E and 512k on 8xx */ + if (mmu_psize_defs[MMU_PAGE_4M].shift) + HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_4M].shift; + else if (mmu_psize_defs[MMU_PAGE_512K].shift) + HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_512K].shift; +#else /* Set default large page size. Currently, we pick 16M or 1M * depending on what is available */ @@ -877,11 +851,13 @@ static int __init hugetlbpage_init(void) HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_1M].shift; else if (mmu_psize_defs[MMU_PAGE_2M].shift) HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift; - +#endif + else + panic("%s: Unable to set default huge page size\n", __func__); return 0; } -#endif + arch_initcall(hugetlbpage_init); void flush_dcache_icache_hugepage(struct page *page) diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c new file mode 100644 index 0000000..a175cd8 --- /dev/null +++ b/arch/powerpc/mm/init-common.c @@ -0,0 +1,107 @@ +/* + * PowerPC version + * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) + * + * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) + * and Cort Dougan (PReP) (cort@cs.nmt.edu) + * Copyright (C) 1996 Paul Mackerras + * + * Derived from "arch/i386/mm/init.c" + * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds + * + * Dave Engebretsen <engebret@us.ibm.com> + * Rework for PPC64 port. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#undef DEBUG + +#include <linux/string.h> +#include <asm/pgalloc.h> +#include <asm/pgtable.h> + +static void pgd_ctor(void *addr) +{ + memset(addr, 0, PGD_TABLE_SIZE); +} + +static void pud_ctor(void *addr) +{ + memset(addr, 0, PUD_TABLE_SIZE); +} + +static void pmd_ctor(void *addr) +{ + memset(addr, 0, PMD_TABLE_SIZE); +} + +struct kmem_cache *pgtable_cache[MAX_PGTABLE_INDEX_SIZE]; + +/* + * Create a kmem_cache() for pagetables. This is not used for PTE + * pages - they're linked to struct page, come from the normal free + * pages pool and have a different entry size (see real_pte_t) to + * everything else. Caches created by this function are used for all + * the higher level pagetables, and for hugepage pagetables. + */ +void pgtable_cache_add(unsigned shift, void (*ctor)(void *)) +{ + char *name; + unsigned long table_size = sizeof(void *) << shift; + unsigned long align = table_size; + + /* When batching pgtable pointers for RCU freeing, we store + * the index size in the low bits. Table alignment must be + * big enough to fit it. + * + * Likewise, hugeapge pagetable pointers contain a (different) + * shift value in the low bits. All tables must be aligned so + * as to leave enough 0 bits in the address to contain it. */ + unsigned long minalign = max(MAX_PGTABLE_INDEX_SIZE + 1, + HUGEPD_SHIFT_MASK + 1); + struct kmem_cache *new; + + /* It would be nice if this was a BUILD_BUG_ON(), but at the + * moment, gcc doesn't seem to recognize is_power_of_2 as a + * constant expression, so so much for that. */ + BUG_ON(!is_power_of_2(minalign)); + BUG_ON((shift < 1) || (shift > MAX_PGTABLE_INDEX_SIZE)); + + if (PGT_CACHE(shift)) + return; /* Already have a cache of this size */ + + align = max_t(unsigned long, align, minalign); + name = kasprintf(GFP_KERNEL, "pgtable-2^%d", shift); + new = kmem_cache_create(name, table_size, align, 0, ctor); + kfree(name); + pgtable_cache[shift - 1] = new; + pr_debug("Allocated pgtable cache for order %d\n", shift); +} + + +void pgtable_cache_init(void) +{ + pgtable_cache_add(PGD_INDEX_SIZE, pgd_ctor); + + if (PMD_INDEX_SIZE && !PGT_CACHE(PMD_INDEX_SIZE)) + pgtable_cache_add(PMD_CACHE_INDEX, pmd_ctor); + /* + * In all current configs, when the PUD index exists it's the + * same size as either the pgd or pmd index except with THP enabled + * on book3s 64 + */ + if (PUD_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE)) + pgtable_cache_add(PUD_INDEX_SIZE, pud_ctor); + + if (!PGT_CACHE(PGD_INDEX_SIZE)) + panic("Couldn't allocate pgd cache"); + if (PMD_INDEX_SIZE && !PGT_CACHE(PMD_INDEX_SIZE)) + panic("Couldn't allocate pmd pgtable caches"); + if (PUD_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE)) + panic("Couldn't allocate pud pgtable caches"); +} diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 16ada1e..a000c35 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -80,83 +80,6 @@ EXPORT_SYMBOL_GPL(memstart_addr); phys_addr_t kernstart_addr; EXPORT_SYMBOL_GPL(kernstart_addr); -static void pgd_ctor(void *addr) -{ - memset(addr, 0, PGD_TABLE_SIZE); -} - -static void pud_ctor(void *addr) -{ - memset(addr, 0, PUD_TABLE_SIZE); -} - -static void pmd_ctor(void *addr) -{ - memset(addr, 0, PMD_TABLE_SIZE); -} - -struct kmem_cache *pgtable_cache[MAX_PGTABLE_INDEX_SIZE]; - -/* - * Create a kmem_cache() for pagetables. This is not used for PTE - * pages - they're linked to struct page, come from the normal free - * pages pool and have a different entry size (see real_pte_t) to - * everything else. Caches created by this function are used for all - * the higher level pagetables, and for hugepage pagetables. - */ -void pgtable_cache_add(unsigned shift, void (*ctor)(void *)) -{ - char *name; - unsigned long table_size = sizeof(void *) << shift; - unsigned long align = table_size; - - /* When batching pgtable pointers for RCU freeing, we store - * the index size in the low bits. Table alignment must be - * big enough to fit it. - * - * Likewise, hugeapge pagetable pointers contain a (different) - * shift value in the low bits. All tables must be aligned so - * as to leave enough 0 bits in the address to contain it. */ - unsigned long minalign = max(MAX_PGTABLE_INDEX_SIZE + 1, - HUGEPD_SHIFT_MASK + 1); - struct kmem_cache *new; - - /* It would be nice if this was a BUILD_BUG_ON(), but at the - * moment, gcc doesn't seem to recognize is_power_of_2 as a - * constant expression, so so much for that. */ - BUG_ON(!is_power_of_2(minalign)); - BUG_ON((shift < 1) || (shift > MAX_PGTABLE_INDEX_SIZE)); - - if (PGT_CACHE(shift)) - return; /* Already have a cache of this size */ - - align = max_t(unsigned long, align, minalign); - name = kasprintf(GFP_KERNEL, "pgtable-2^%d", shift); - new = kmem_cache_create(name, table_size, align, 0, ctor); - kfree(name); - pgtable_cache[shift - 1] = new; - pr_debug("Allocated pgtable cache for order %d\n", shift); -} - - -void pgtable_cache_init(void) -{ - pgtable_cache_add(PGD_INDEX_SIZE, pgd_ctor); - pgtable_cache_add(PMD_CACHE_INDEX, pmd_ctor); - /* - * In all current configs, when the PUD index exists it's the - * same size as either the pgd or pmd index except with THP enabled - * on book3s 64 - */ - if (PUD_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE)) - pgtable_cache_add(PUD_INDEX_SIZE, pud_ctor); - - if (!PGT_CACHE(PGD_INDEX_SIZE) || !PGT_CACHE(PMD_CACHE_INDEX)) - panic("Couldn't allocate pgtable caches"); - if (PUD_INDEX_SIZE && !PGT_CACHE(PUD_INDEX_SIZE)) - panic("Couldn't allocate pud pgtable caches"); -} - #ifdef CONFIG_SPARSEMEM_VMEMMAP /* * Given an address within the vmemmap, determine the pfn of the page that diff --git a/arch/powerpc/mm/mmu_context_book3s64.c b/arch/powerpc/mm/mmu_context_book3s64.c index b114f8b..73bf6e1 100644 --- a/arch/powerpc/mm/mmu_context_book3s64.c +++ b/arch/powerpc/mm/mmu_context_book3s64.c @@ -115,7 +115,7 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) mm->context.pte_frag = NULL; #endif #ifdef CONFIG_SPAPR_TCE_IOMMU - mm_iommu_init(&mm->context); + mm_iommu_init(mm); #endif return 0; } @@ -156,13 +156,11 @@ static inline void destroy_pagetable_page(struct mm_struct *mm) } #endif - void destroy_context(struct mm_struct *mm) { #ifdef CONFIG_SPAPR_TCE_IOMMU - mm_iommu_cleanup(&mm->context); + WARN_ON_ONCE(!list_empty(&mm->context.iommu_group_mem_list)); #endif - #ifdef CONFIG_PPC_ICSWX drop_cop(mm->context.acop, mm); kfree(mm->context.cop_lockp); diff --git a/arch/powerpc/mm/mmu_context_iommu.c b/arch/powerpc/mm/mmu_context_iommu.c index e0f1c33..104bad0 100644 --- a/arch/powerpc/mm/mmu_context_iommu.c +++ b/arch/powerpc/mm/mmu_context_iommu.c @@ -56,7 +56,7 @@ static long mm_iommu_adjust_locked_vm(struct mm_struct *mm, } pr_debug("[%d] RLIMIT_MEMLOCK HASH64 %c%ld %ld/%ld\n", - current->pid, + current ? current->pid : 0, incr ? '+' : '-', npages << PAGE_SHIFT, mm->locked_vm << PAGE_SHIFT, @@ -66,12 +66,9 @@ static long mm_iommu_adjust_locked_vm(struct mm_struct *mm, return ret; } -bool mm_iommu_preregistered(void) +bool mm_iommu_preregistered(struct mm_struct *mm) { - if (!current || !current->mm) - return false; - - return !list_empty(¤t->mm->context.iommu_group_mem_list); + return !list_empty(&mm->context.iommu_group_mem_list); } EXPORT_SYMBOL_GPL(mm_iommu_preregistered); @@ -124,19 +121,16 @@ static int mm_iommu_move_page_from_cma(struct page *page) return 0; } -long mm_iommu_get(unsigned long ua, unsigned long entries, +long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, struct mm_iommu_table_group_mem_t **pmem) { struct mm_iommu_table_group_mem_t *mem; long i, j, ret = 0, locked_entries = 0; struct page *page = NULL; - if (!current || !current->mm) - return -ESRCH; /* process exited */ - mutex_lock(&mem_list_mutex); - list_for_each_entry_rcu(mem, ¤t->mm->context.iommu_group_mem_list, + list_for_each_entry_rcu(mem, &mm->context.iommu_group_mem_list, next) { if ((mem->ua == ua) && (mem->entries == entries)) { ++mem->used; @@ -154,7 +148,7 @@ long mm_iommu_get(unsigned long ua, unsigned long entries, } - ret = mm_iommu_adjust_locked_vm(current->mm, entries, true); + ret = mm_iommu_adjust_locked_vm(mm, entries, true); if (ret) goto unlock_exit; @@ -215,11 +209,11 @@ populate: mem->entries = entries; *pmem = mem; - list_add_rcu(&mem->next, ¤t->mm->context.iommu_group_mem_list); + list_add_rcu(&mem->next, &mm->context.iommu_group_mem_list); unlock_exit: if (locked_entries && ret) - mm_iommu_adjust_locked_vm(current->mm, locked_entries, false); + mm_iommu_adjust_locked_vm(mm, locked_entries, false); mutex_unlock(&mem_list_mutex); @@ -264,17 +258,13 @@ static void mm_iommu_free(struct rcu_head *head) static void mm_iommu_release(struct mm_iommu_table_group_mem_t *mem) { list_del_rcu(&mem->next); - mm_iommu_adjust_locked_vm(current->mm, mem->entries, false); call_rcu(&mem->rcu, mm_iommu_free); } -long mm_iommu_put(struct mm_iommu_table_group_mem_t *mem) +long mm_iommu_put(struct mm_struct *mm, struct mm_iommu_table_group_mem_t *mem) { long ret = 0; - if (!current || !current->mm) - return -ESRCH; /* process exited */ - mutex_lock(&mem_list_mutex); if (mem->used == 0) { @@ -297,6 +287,8 @@ long mm_iommu_put(struct mm_iommu_table_group_mem_t *mem) /* @mapped became 0 so now mappings are disabled, release the region */ mm_iommu_release(mem); + mm_iommu_adjust_locked_vm(mm, mem->entries, false); + unlock_exit: mutex_unlock(&mem_list_mutex); @@ -304,14 +296,12 @@ unlock_exit: } EXPORT_SYMBOL_GPL(mm_iommu_put); -struct mm_iommu_table_group_mem_t *mm_iommu_lookup(unsigned long ua, - unsigned long size) +struct mm_iommu_table_group_mem_t *mm_iommu_lookup(struct mm_struct *mm, + unsigned long ua, unsigned long size) { struct mm_iommu_table_group_mem_t *mem, *ret = NULL; - list_for_each_entry_rcu(mem, - ¤t->mm->context.iommu_group_mem_list, - next) { + list_for_each_entry_rcu(mem, &mm->context.iommu_group_mem_list, next) { if ((mem->ua <= ua) && (ua + size <= mem->ua + (mem->entries << PAGE_SHIFT))) { @@ -324,14 +314,12 @@ struct mm_iommu_table_group_mem_t *mm_iommu_lookup(unsigned long ua, } EXPORT_SYMBOL_GPL(mm_iommu_lookup); -struct mm_iommu_table_group_mem_t *mm_iommu_find(unsigned long ua, - unsigned long entries) +struct mm_iommu_table_group_mem_t *mm_iommu_find(struct mm_struct *mm, + unsigned long ua, unsigned long entries) { struct mm_iommu_table_group_mem_t *mem, *ret = NULL; - list_for_each_entry_rcu(mem, - ¤t->mm->context.iommu_group_mem_list, - next) { + list_for_each_entry_rcu(mem, &mm->context.iommu_group_mem_list, next) { if ((mem->ua == ua) && (mem->entries == entries)) { ret = mem; break; @@ -373,17 +361,7 @@ void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem) } EXPORT_SYMBOL_GPL(mm_iommu_mapped_dec); -void mm_iommu_init(mm_context_t *ctx) +void mm_iommu_init(struct mm_struct *mm) { - INIT_LIST_HEAD_RCU(&ctx->iommu_group_mem_list); -} - -void mm_iommu_cleanup(mm_context_t *ctx) -{ - struct mm_iommu_table_group_mem_t *mem, *tmp; - - list_for_each_entry_safe(mem, tmp, &ctx->iommu_group_mem_list, next) { - list_del_rcu(&mem->next); - mm_iommu_do_free(mem); - } + INIT_LIST_HEAD_RCU(&mm->context.iommu_group_mem_list); } diff --git a/arch/powerpc/mm/pgtable-book3s64.c b/arch/powerpc/mm/pgtable-book3s64.c index f4f437c..ebf9782 100644 --- a/arch/powerpc/mm/pgtable-book3s64.c +++ b/arch/powerpc/mm/pgtable-book3s64.c @@ -35,7 +35,8 @@ int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address, #endif changed = !pmd_same(*(pmdp), entry); if (changed) { - __ptep_set_access_flags(vma->vm_mm, pmdp_ptep(pmdp), pmd_pte(entry)); + __ptep_set_access_flags(vma->vm_mm, pmdp_ptep(pmdp), + pmd_pte(entry), address); flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE); } return changed; diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 8d941c6..cfa53cc 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -159,7 +159,7 @@ redo: * Allocate Partition table and process table for the * host. */ - BUILD_BUG_ON_MSG((PRTB_SIZE_SHIFT > 23), "Process table size too large."); + BUILD_BUG_ON_MSG((PRTB_SIZE_SHIFT > 36), "Process table size too large."); process_tb = early_alloc_pgtable(1UL << PRTB_SIZE_SHIFT); /* * Fill in the process table. @@ -240,7 +240,7 @@ static int __init radix_dt_scan_page_sizes(unsigned long node, /* top 3 bit is AP encoding */ shift = be32_to_cpu(prop[0]) & ~(0xe << 28); ap = be32_to_cpu(prop[0]) >> 29; - pr_info("Page size sift = %d AP=0x%x\n", shift, ap); + pr_info("Page size shift = %d AP=0x%x\n", shift, ap); idx = get_idx_from_shift(shift); if (idx < 0) @@ -312,6 +312,38 @@ static void update_hid_for_radix(void) cpu_relax(); } +static void radix_init_amor(void) +{ + /* + * In HV mode, we init AMOR (Authority Mask Override Register) so that + * the hypervisor and guest can setup IAMR (Instruction Authority Mask + * Register), enable key 0 and set it to 1. + * + * AMOR = 0b1100 .... 0000 (Mask for key 0 is 11) + */ + mtspr(SPRN_AMOR, (3ul << 62)); +} + +static void radix_init_iamr(void) +{ + unsigned long iamr; + + /* + * The IAMR should set to 0 on DD1. + */ + if (cpu_has_feature(CPU_FTR_POWER9_DD1)) + iamr = 0; + else + iamr = (1ul << 62); + + /* + * Radix always uses key0 of the IAMR to determine if an access is + * allowed. We set bit 0 (IBM bit 1) of key0, to prevent instruction + * fetch. + */ + mtspr(SPRN_IAMR, iamr); +} + void __init radix__early_init_mmu(void) { unsigned long lpcr; @@ -368,10 +400,12 @@ void __init radix__early_init_mmu(void) lpcr = mfspr(SPRN_LPCR); mtspr(SPRN_LPCR, lpcr | LPCR_UPRT | LPCR_HR); radix_init_partition_table(); + radix_init_amor(); } memblock_set_current_limit(MEMBLOCK_ALLOC_ANYWHERE); + radix_init_iamr(); radix_init_pgtable(); } @@ -391,7 +425,9 @@ void radix__early_init_mmu_secondary(void) mtspr(SPRN_PTCR, __pa(partition_tb) | (PATB_SIZE_SHIFT - 12)); + radix_init_amor(); } + radix_init_iamr(); } void radix__mmu_cleanup_all(void) diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 911fdfb..cb39c8b 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -224,7 +224,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, if (changed) { if (!is_vm_hugetlb_page(vma)) assert_pte_locked(vma->vm_mm, address); - __ptep_set_access_flags(vma->vm_mm, ptep, entry); + __ptep_set_access_flags(vma->vm_mm, ptep, entry, address); flush_tlb_page(vma, address); } return changed; diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 0ae0572..a65c0b4 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -42,43 +42,6 @@ EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */ extern char etext[], _stext[], _sinittext[], _einittext[]; -#define PGDIR_ORDER (32 + PGD_T_LOG2 - PGDIR_SHIFT) - -#ifndef CONFIG_PPC_4K_PAGES -static struct kmem_cache *pgtable_cache; - -void pgtable_cache_init(void) -{ - pgtable_cache = kmem_cache_create("PGDIR cache", 1 << PGDIR_ORDER, - 1 << PGDIR_ORDER, 0, NULL); - if (pgtable_cache == NULL) - panic("Couldn't allocate pgtable caches"); -} -#endif - -pgd_t *pgd_alloc(struct mm_struct *mm) -{ - pgd_t *ret; - - /* pgdir take page or two with 4K pages and a page fraction otherwise */ -#ifndef CONFIG_PPC_4K_PAGES - ret = kmem_cache_alloc(pgtable_cache, GFP_KERNEL | __GFP_ZERO); -#else - ret = (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, - PGDIR_ORDER - PAGE_SHIFT); -#endif - return ret; -} - -void pgd_free(struct mm_struct *mm, pgd_t *pgd) -{ -#ifndef CONFIG_PPC_4K_PAGES - kmem_cache_free(pgtable_cache, (void *)pgd); -#else - free_pages((unsigned long)pgd, PGDIR_ORDER - PAGE_SHIFT); -#endif -} - __ref pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { pte_t *pte; diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c index 3493cf4..61b7911 100644 --- a/arch/powerpc/mm/tlb-radix.c +++ b/arch/powerpc/mm/tlb-radix.c @@ -428,3 +428,21 @@ void radix__flush_tlb_all(void) : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(0) : "memory"); asm volatile("eieio; tlbsync; ptesync": : :"memory"); } + +void radix__flush_tlb_pte_p9_dd1(unsigned long old_pte, struct mm_struct *mm, + unsigned long address) +{ + /* + * We track page size in pte only for DD1, So we can + * call this only on DD1. + */ + if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) { + VM_WARN_ON(1); + return; + } + + if (old_pte & _PAGE_LARGE) + radix__flush_tlb_page_psize(mm, address, MMU_PAGE_2M); + else + radix__flush_tlb_page_psize(mm, address, mmu_virtual_psize); +} diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index 050badc..ba28fcb 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -53,7 +53,7 @@ * other sizes not listed here. The .ind field is only used on MMUs that have * indirect page table entries. */ -#ifdef CONFIG_PPC_BOOK3E_MMU +#if defined(CONFIG_PPC_BOOK3E_MMU) || defined(CONFIG_PPC_8xx) #ifdef CONFIG_PPC_FSL_BOOK3E struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { [MMU_PAGE_4K] = { @@ -85,6 +85,25 @@ struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { .enc = BOOK3E_PAGESZ_1GB, }, }; +#elif defined(CONFIG_PPC_8xx) +struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { + /* we only manage 4k and 16k pages as normal pages */ +#ifdef CONFIG_PPC_4K_PAGES + [MMU_PAGE_4K] = { + .shift = 12, + }, +#else + [MMU_PAGE_16K] = { + .shift = 14, + }, +#endif + [MMU_PAGE_512K] = { + .shift = 19, + }, + [MMU_PAGE_8M] = { + .shift = 23, + }, +}; #else struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { [MMU_PAGE_4K] = { diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c index 6143c99..50e598c 100644 --- a/arch/powerpc/perf/isa207-common.c +++ b/arch/powerpc/perf/isa207-common.c @@ -12,6 +12,40 @@ */ #include "isa207-common.h" +PMU_FORMAT_ATTR(event, "config:0-49"); +PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); +PMU_FORMAT_ATTR(mark, "config:8"); +PMU_FORMAT_ATTR(combine, "config:11"); +PMU_FORMAT_ATTR(unit, "config:12-15"); +PMU_FORMAT_ATTR(pmc, "config:16-19"); +PMU_FORMAT_ATTR(cache_sel, "config:20-23"); +PMU_FORMAT_ATTR(sample_mode, "config:24-28"); +PMU_FORMAT_ATTR(thresh_sel, "config:29-31"); +PMU_FORMAT_ATTR(thresh_stop, "config:32-35"); +PMU_FORMAT_ATTR(thresh_start, "config:36-39"); +PMU_FORMAT_ATTR(thresh_cmp, "config:40-49"); + +struct attribute *isa207_pmu_format_attr[] = { + &format_attr_event.attr, + &format_attr_pmcxsel.attr, + &format_attr_mark.attr, + &format_attr_combine.attr, + &format_attr_unit.attr, + &format_attr_pmc.attr, + &format_attr_cache_sel.attr, + &format_attr_sample_mode.attr, + &format_attr_thresh_sel.attr, + &format_attr_thresh_stop.attr, + &format_attr_thresh_start.attr, + &format_attr_thresh_cmp.attr, + NULL, +}; + +struct attribute_group isa207_pmu_format_group = { + .name = "format", + .attrs = isa207_pmu_format_attr, +}; + static inline bool event_is_fab_match(u64 event) { /* Only check pmc, unit and pmcxsel, ignore the edge bit (0) */ @@ -21,6 +55,48 @@ static inline bool event_is_fab_match(u64 event) return (event == 0x30056 || event == 0x4f052); } +static bool is_event_valid(u64 event) +{ + u64 valid_mask = EVENT_VALID_MASK; + + if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + valid_mask = p9_EVENT_VALID_MASK; + + return !(event & ~valid_mask); +} + +static u64 mmcra_sdar_mode(u64 event) +{ + if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + return p9_SDAR_MODE(event) << MMCRA_SDAR_MODE_SHIFT; + + return MMCRA_SDAR_MODE_TLB; +} + +static u64 thresh_cmp_val(u64 value) +{ + if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + return value << p9_MMCRA_THR_CMP_SHIFT; + + return value << MMCRA_THR_CMP_SHIFT; +} + +static unsigned long combine_from_event(u64 event) +{ + if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + return p9_EVENT_COMBINE(event); + + return EVENT_COMBINE(event); +} + +static unsigned long combine_shift(unsigned long pmc) +{ + if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + return p9_MMCR1_COMBINE_SHIFT(pmc); + + return MMCR1_COMBINE_SHIFT(pmc); +} + int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp) { unsigned int unit, pmc, cache, ebb; @@ -28,7 +104,7 @@ int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp) mask = value = 0; - if (event & ~EVENT_VALID_MASK) + if (!is_event_valid(event)) return -1; pmc = (event >> EVENT_PMC_SHIFT) & EVENT_PMC_MASK; @@ -155,15 +231,13 @@ int isa207_compute_mmcr(u64 event[], int n_ev, pmc_inuse |= 1 << pmc; } - /* In continuous sampling mode, update SDAR on TLB miss */ - mmcra = MMCRA_SDAR_MODE_TLB; - mmcr1 = mmcr2 = 0; + mmcra = mmcr1 = mmcr2 = 0; /* Second pass: assign PMCs, set all MMCR1 fields */ for (i = 0; i < n_ev; ++i) { pmc = (event[i] >> EVENT_PMC_SHIFT) & EVENT_PMC_MASK; unit = (event[i] >> EVENT_UNIT_SHIFT) & EVENT_UNIT_MASK; - combine = (event[i] >> EVENT_COMBINE_SHIFT) & EVENT_COMBINE_MASK; + combine = combine_from_event(event[i]); psel = event[i] & EVENT_PSEL_MASK; if (!pmc) { @@ -177,10 +251,13 @@ int isa207_compute_mmcr(u64 event[], int n_ev, if (pmc <= 4) { mmcr1 |= unit << MMCR1_UNIT_SHIFT(pmc); - mmcr1 |= combine << MMCR1_COMBINE_SHIFT(pmc); + mmcr1 |= combine << combine_shift(pmc); mmcr1 |= psel << MMCR1_PMCSEL_SHIFT(pmc); } + /* In continuous sampling mode, update SDAR on TLB miss */ + mmcra |= mmcra_sdar_mode(event[i]); + if (event[i] & EVENT_IS_L1) { cache = event[i] >> EVENT_CACHE_SEL_SHIFT; mmcr1 |= (cache & 1) << MMCR1_IC_QUAL_SHIFT; @@ -211,7 +288,7 @@ int isa207_compute_mmcr(u64 event[], int n_ev, val = (event[i] >> EVENT_THR_SEL_SHIFT) & EVENT_THR_SEL_MASK; mmcra |= val << MMCRA_THR_SEL_SHIFT; val = (event[i] >> EVENT_THR_CMP_SHIFT) & EVENT_THR_CMP_MASK; - mmcra |= val << MMCRA_THR_CMP_SHIFT; + mmcra |= thresh_cmp_val(val); } if (event[i] & EVENT_WANTS_BHRB) { diff --git a/arch/powerpc/perf/isa207-common.h b/arch/powerpc/perf/isa207-common.h index 4d0a4e5..90495f1 100644 --- a/arch/powerpc/perf/isa207-common.h +++ b/arch/powerpc/perf/isa207-common.h @@ -107,6 +107,7 @@ #define EVENT_UNIT_MASK 0xf #define EVENT_COMBINE_SHIFT 11 /* Combine bit */ #define EVENT_COMBINE_MASK 0x1 +#define EVENT_COMBINE(v) (((v) >> EVENT_COMBINE_SHIFT) & EVENT_COMBINE_MASK) #define EVENT_MARKED_SHIFT 8 /* Marked bit */ #define EVENT_MARKED_MASK 0x1 #define EVENT_IS_MARKED (EVENT_MARKED_MASK << EVENT_MARKED_SHIFT) @@ -134,6 +135,26 @@ PERF_SAMPLE_BRANCH_KERNEL |\ PERF_SAMPLE_BRANCH_HV) +/* Contants to support power9 raw encoding format */ +#define p9_EVENT_COMBINE_SHIFT 10 /* Combine bit */ +#define p9_EVENT_COMBINE_MASK 0x3ull +#define p9_EVENT_COMBINE(v) (((v) >> p9_EVENT_COMBINE_SHIFT) & p9_EVENT_COMBINE_MASK) +#define p9_SDAR_MODE_SHIFT 50 +#define p9_SDAR_MODE_MASK 0x3ull +#define p9_SDAR_MODE(v) (((v) >> p9_SDAR_MODE_SHIFT) & p9_SDAR_MODE_MASK) + +#define p9_EVENT_VALID_MASK \ + ((p9_SDAR_MODE_MASK << p9_SDAR_MODE_SHIFT | \ + (EVENT_THRESH_MASK << EVENT_THRESH_SHIFT) | \ + (EVENT_SAMPLE_MASK << EVENT_SAMPLE_SHIFT) | \ + (EVENT_CACHE_SEL_MASK << EVENT_CACHE_SEL_SHIFT) | \ + (EVENT_PMC_MASK << EVENT_PMC_SHIFT) | \ + (EVENT_UNIT_MASK << EVENT_UNIT_SHIFT) | \ + (p9_EVENT_COMBINE_MASK << p9_EVENT_COMBINE_SHIFT) | \ + (EVENT_MARKED_MASK << EVENT_MARKED_SHIFT) | \ + EVENT_LINUX_MASK | \ + EVENT_PSEL_MASK)) + /* * Layout of constraint bits: * @@ -210,15 +231,22 @@ #define MMCR1_DC_QUAL_SHIFT 47 #define MMCR1_IC_QUAL_SHIFT 46 +/* MMCR1 Combine bits macro for power9 */ +#define p9_MMCR1_COMBINE_SHIFT(pmc) (38 - ((pmc - 1) * 2)) + /* Bits in MMCRA for PowerISA v2.07 */ #define MMCRA_SAMP_MODE_SHIFT 1 #define MMCRA_SAMP_ELIG_SHIFT 4 #define MMCRA_THR_CTL_SHIFT 8 #define MMCRA_THR_SEL_SHIFT 16 #define MMCRA_THR_CMP_SHIFT 32 -#define MMCRA_SDAR_MODE_TLB (1ull << 42) +#define MMCRA_SDAR_MODE_SHIFT 42 +#define MMCRA_SDAR_MODE_TLB (1ull << MMCRA_SDAR_MODE_SHIFT) #define MMCRA_IFM_SHIFT 30 +/* MMCR1 Threshold Compare bit constant for power9 */ +#define p9_MMCRA_THR_CMP_SHIFT 45 + /* Bits in MMCR2 for PowerISA v2.07 */ #define MMCR2_FCS(pmc) (1ull << (63 - (((pmc) - 1) * 9))) #define MMCR2_FCP(pmc) (1ull << (62 - (((pmc) - 1) * 9))) diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index ab830d1..d071863 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -30,6 +30,9 @@ enum { #define POWER8_MMCRA_IFM2 0x0000000080000000UL #define POWER8_MMCRA_IFM3 0x00000000C0000000UL +/* PowerISA v2.07 format attribute structure*/ +extern struct attribute_group isa207_pmu_format_group; + /* Table of alternatives, sorted by column 0 */ static const unsigned int event_alternatives[][MAX_ALT] = { { PM_MRK_ST_CMPL, PM_MRK_ST_CMPL_ALT }, @@ -175,42 +178,8 @@ static struct attribute_group power8_pmu_events_group = { .attrs = power8_events_attr, }; -PMU_FORMAT_ATTR(event, "config:0-49"); -PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); -PMU_FORMAT_ATTR(mark, "config:8"); -PMU_FORMAT_ATTR(combine, "config:11"); -PMU_FORMAT_ATTR(unit, "config:12-15"); -PMU_FORMAT_ATTR(pmc, "config:16-19"); -PMU_FORMAT_ATTR(cache_sel, "config:20-23"); -PMU_FORMAT_ATTR(sample_mode, "config:24-28"); -PMU_FORMAT_ATTR(thresh_sel, "config:29-31"); -PMU_FORMAT_ATTR(thresh_stop, "config:32-35"); -PMU_FORMAT_ATTR(thresh_start, "config:36-39"); -PMU_FORMAT_ATTR(thresh_cmp, "config:40-49"); - -static struct attribute *power8_pmu_format_attr[] = { - &format_attr_event.attr, - &format_attr_pmcxsel.attr, - &format_attr_mark.attr, - &format_attr_combine.attr, - &format_attr_unit.attr, - &format_attr_pmc.attr, - &format_attr_cache_sel.attr, - &format_attr_sample_mode.attr, - &format_attr_thresh_sel.attr, - &format_attr_thresh_stop.attr, - &format_attr_thresh_start.attr, - &format_attr_thresh_cmp.attr, - NULL, -}; - -static struct attribute_group power8_pmu_format_group = { - .name = "format", - .attrs = power8_pmu_format_attr, -}; - static const struct attribute_group *power8_pmu_attr_groups[] = { - &power8_pmu_format_group, + &isa207_pmu_format_group, &power8_pmu_events_group, NULL, }; diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c index 8e9a819..346010e 100644 --- a/arch/powerpc/perf/power9-pmu.c +++ b/arch/powerpc/perf/power9-pmu.c @@ -16,6 +16,78 @@ #include "isa207-common.h" /* + * Raw event encoding for Power9: + * + * 60 56 52 48 44 40 36 32 + * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | + * | | [ ] [ ] [ thresh_cmp ] [ thresh_ctl ] + * | | | | | + * | | *- IFM (Linux) | thresh start/stop OR FAB match -* + * | *- BHRB (Linux) *sm + * *- EBB (Linux) + * + * 28 24 20 16 12 8 4 0 + * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | + * [ ] [ sample ] [cache] [ pmc ] [unit ] [] m [ pmcxsel ] + * | | | | | + * | | | | *- mark + * | | *- L1/L2/L3 cache_sel | + * | | | + * | *- sampling mode for marked events *- combine + * | + * *- thresh_sel + * + * Below uses IBM bit numbering. + * + * MMCR1[x:y] = unit (PMCxUNIT) + * MMCR1[24] = pmc1combine[0] + * MMCR1[25] = pmc1combine[1] + * MMCR1[26] = pmc2combine[0] + * MMCR1[27] = pmc2combine[1] + * MMCR1[28] = pmc3combine[0] + * MMCR1[29] = pmc3combine[1] + * MMCR1[30] = pmc4combine[0] + * MMCR1[31] = pmc4combine[1] + * + * if pmc == 3 and unit == 0 and pmcxsel[0:6] == 0b0101011 + * # PM_MRK_FAB_RSP_MATCH + * MMCR1[20:27] = thresh_ctl (FAB_CRESP_MATCH / FAB_TYPE_MATCH) + * else if pmc == 4 and unit == 0xf and pmcxsel[0:6] == 0b0101001 + * # PM_MRK_FAB_RSP_MATCH_CYC + * MMCR1[20:27] = thresh_ctl (FAB_CRESP_MATCH / FAB_TYPE_MATCH) + * else + * MMCRA[48:55] = thresh_ctl (THRESH START/END) + * + * if thresh_sel: + * MMCRA[45:47] = thresh_sel + * + * if thresh_cmp: + * MMCRA[9:11] = thresh_cmp[0:2] + * MMCRA[12:18] = thresh_cmp[3:9] + * + * if unit == 6 or unit == 7 + * MMCRC[53:55] = cache_sel[1:3] (L2EVENT_SEL) + * else if unit == 8 or unit == 9: + * if cache_sel[0] == 0: # L3 bank + * MMCRC[47:49] = cache_sel[1:3] (L3EVENT_SEL0) + * else if cache_sel[0] == 1: + * MMCRC[50:51] = cache_sel[2:3] (L3EVENT_SEL1) + * else if cache_sel[1]: # L1 event + * MMCR1[16] = cache_sel[2] +Â * MMCR1[17] = cache_sel[3] + * + * if mark: + * MMCRA[63] = 1 (SAMPLE_ENABLE) + * MMCRA[57:59] = sample[0:2] (RAND_SAMP_ELIG) +Â * MMCRA[61:62] = sample[3:4] (RAND_SAMP_MODE) + * + * if EBB and BHRB: + * MMCRA[32:33] = IFM + * + * MMCRA[SDAR_MODE] = sm + */ + +/* * Some power9 event codes. */ #define EVENT(_name, _code) _name = _code, @@ -31,6 +103,9 @@ enum { #define POWER9_MMCRA_IFM2 0x0000000080000000UL #define POWER9_MMCRA_IFM3 0x00000000C0000000UL +/* PowerISA v2.07 format attribute structure*/ +extern struct attribute_group isa207_pmu_format_group; + GENERIC_EVENT_ATTR(cpu-cycles, PM_CYC); GENERIC_EVENT_ATTR(stalled-cycles-frontend, PM_ICT_NOSLOT_CYC); GENERIC_EVENT_ATTR(stalled-cycles-backend, PM_CMPLU_STALL); @@ -90,10 +165,16 @@ static struct attribute_group power9_pmu_events_group = { .attrs = power9_events_attr, }; -PMU_FORMAT_ATTR(event, "config:0-49"); +static const struct attribute_group *power9_isa207_pmu_attr_groups[] = { + &isa207_pmu_format_group, + &power9_pmu_events_group, + NULL, +}; + +PMU_FORMAT_ATTR(event, "config:0-51"); PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); PMU_FORMAT_ATTR(mark, "config:8"); -PMU_FORMAT_ATTR(combine, "config:11"); +PMU_FORMAT_ATTR(combine, "config:10-11"); PMU_FORMAT_ATTR(unit, "config:12-15"); PMU_FORMAT_ATTR(pmc, "config:16-19"); PMU_FORMAT_ATTR(cache_sel, "config:20-23"); @@ -102,6 +183,7 @@ PMU_FORMAT_ATTR(thresh_sel, "config:29-31"); PMU_FORMAT_ATTR(thresh_stop, "config:32-35"); PMU_FORMAT_ATTR(thresh_start, "config:36-39"); PMU_FORMAT_ATTR(thresh_cmp, "config:40-49"); +PMU_FORMAT_ATTR(sdar_mode, "config:50-51"); static struct attribute *power9_pmu_format_attr[] = { &format_attr_event.attr, @@ -116,6 +198,7 @@ static struct attribute *power9_pmu_format_attr[] = { &format_attr_thresh_stop.attr, &format_attr_thresh_start.attr, &format_attr_thresh_cmp.attr, + &format_attr_sdar_mode.attr, NULL, }; @@ -291,6 +374,24 @@ static int power9_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { #undef C +static struct power_pmu power9_isa207_pmu = { + .name = "POWER9", + .n_counter = MAX_PMU_COUNTERS, + .add_fields = ISA207_ADD_FIELDS, + .test_adder = ISA207_TEST_ADDER, + .compute_mmcr = isa207_compute_mmcr, + .config_bhrb = power9_config_bhrb, + .bhrb_filter_map = power9_bhrb_filter_map, + .get_constraint = isa207_get_constraint, + .disable_pmc = isa207_disable_pmc, + .flags = PPMU_HAS_SIER | PPMU_ARCH_207S, + .n_generic = ARRAY_SIZE(power9_generic_events), + .generic_events = power9_generic_events, + .cache_events = &power9_cache_events, + .attr_groups = power9_isa207_pmu_attr_groups, + .bhrb_nr = 32, +}; + static struct power_pmu power9_pmu = { .name = "POWER9", .n_counter = MAX_PMU_COUNTERS, @@ -311,14 +412,19 @@ static struct power_pmu power9_pmu = { static int __init init_power9_pmu(void) { - int rc; + int rc = 0; /* Comes from cpu_specs[] */ if (!cur_cpu_spec->oprofile_cpu_type || strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power9")) return -ENODEV; - rc = register_power_pmu(&power9_pmu); + if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { + rc = register_power_pmu(&power9_isa207_pmu); + } else { + rc = register_power_pmu(&power9_pmu); + } + if (rc) return rc; diff --git a/arch/powerpc/platforms/40x/Kconfig b/arch/powerpc/platforms/40x/Kconfig index 1d7c1b1..abc2450 100644 --- a/arch/powerpc/platforms/40x/Kconfig +++ b/arch/powerpc/platforms/40x/Kconfig @@ -103,18 +103,18 @@ config 405GP bool select IBM405_ERR77 select IBM405_ERR51 - select IBM_EMAC_ZMII + select IBM_EMAC_ZMII if IBM_EMAC config 405EX bool - select IBM_EMAC_EMAC4 - select IBM_EMAC_RGMII + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_RGMII if IBM_EMAC config 405EZ bool - select IBM_EMAC_NO_FLOW_CTRL - select IBM_EMAC_MAL_CLR_ICINTSTAT - select IBM_EMAC_MAL_COMMON_ERR + select IBM_EMAC_NO_FLOW_CTRL if IBM_EMAC + select IBM_EMAC_MAL_CLR_ICINTSTAT if IBM_EMAC + select IBM_EMAC_MAL_COMMON_ERR if IBM_EMAC config XILINX_VIRTEX bool diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index 25b8d64..9b0afe9 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -26,7 +26,7 @@ config BLUESTONE select PCI_MSI select PPC4xx_MSI select PPC4xx_PCI_EXPRESS - select IBM_EMAC_RGMII + select IBM_EMAC_RGMII if IBM_EMAC help This option enables support for the APM APM821xx Evaluation board. @@ -125,8 +125,8 @@ config CANYONLANDS select PPC4xx_PCI_EXPRESS select PCI_MSI select PPC4xx_MSI - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC help This option enables support for the AMCC PPC460EX evaluation board. @@ -138,8 +138,8 @@ config GLACIER select 460EX # Odd since it uses 460GT but the effects are the same select PCI select PPC4xx_PCI_EXPRESS - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC help This option enables support for the AMCC PPC460GT evaluation board. @@ -164,7 +164,7 @@ config EIGER select 460SX select PCI select PPC4xx_PCI_EXPRESS - select IBM_EMAC_RGMII + select IBM_EMAC_RGMII if IBM_EMAC help This option enables support for the AMCC PPC460SX evaluation board. @@ -213,7 +213,7 @@ config AKEBONO select NETDEVICES select ETHERNET select NET_VENDOR_IBM - select IBM_EMAC_EMAC4 + select IBM_EMAC_EMAC4 if IBM_EMAC select USB if USB_SUPPORT select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD @@ -291,54 +291,54 @@ config 440EP bool select PPC_FPU select IBM440EP_ERR42 - select IBM_EMAC_ZMII + select IBM_EMAC_ZMII if IBM_EMAC config 440EPX bool select PPC_FPU - select IBM_EMAC_EMAC4 - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC select USB_EHCI_BIG_ENDIAN_MMIO select USB_EHCI_BIG_ENDIAN_DESC config 440GRX bool - select IBM_EMAC_EMAC4 - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC config 440GP bool - select IBM_EMAC_ZMII + select IBM_EMAC_ZMII if IBM_EMAC config 440GX bool - select IBM_EMAC_EMAC4 - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII #test only - select IBM_EMAC_TAH #test only + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC #test only + select IBM_EMAC_TAH if IBM_EMAC #test only config 440SP bool config 440SPe bool - select IBM_EMAC_EMAC4 + select IBM_EMAC_EMAC4 if IBM_EMAC config 460EX bool select PPC_FPU - select IBM_EMAC_EMAC4 - select IBM_EMAC_TAH + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_TAH if IBM_EMAC config 460SX bool select PPC_FPU - select IBM_EMAC_EMAC4 - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII - select IBM_EMAC_TAH + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC + select IBM_EMAC_TAH if IBM_EMAC config 476FPE bool @@ -347,8 +347,8 @@ config 476FPE config APM821xx bool select PPC_FPU - select IBM_EMAC_EMAC4 - select IBM_EMAC_TAH + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_TAH if IBM_EMAC config 476FPE_ERR46 depends on 476FPE diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c index 24717d0..08f92f6 100644 --- a/arch/powerpc/platforms/83xx/suspend.c +++ b/arch/powerpc/platforms/83xx/suspend.c @@ -441,8 +441,4 @@ static struct platform_driver pmc_driver = { .remove = pmc_remove }; -static int pmc_init(void) -{ - return platform_driver_register(&pmc_driver); -} -device_initcall(pmc_init); +builtin_platform_driver(pmc_driver); diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 9dc1d28..47b389d 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -253,6 +253,8 @@ endif # PPC32 config PPC_QEMU_E500 bool "QEMU generic e500 platform" select DEFAULT_UIMAGE + select E500 + select PPC_E500MC if PPC64 help This option enables support for running as a QEMU guest using QEMU's generic e500 machine. This is not required if you're diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c index 1179115..3803b0a 100644 --- a/arch/powerpc/platforms/85xx/corenet_generic.c +++ b/arch/powerpc/platforms/85xx/corenet_generic.c @@ -220,7 +220,7 @@ define_machine(corenet_generic) { * * Likewise, problems have been seen with kexec when coreint is enabled. */ -#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_KEXEC) +#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_KEXEC_CORE) .get_irq = mpic_get_irq, #else .get_irq = mpic_get_coreint_irq, diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index fe9f19e..a83a6d2 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -349,13 +349,13 @@ struct smp_ops_t smp_85xx_ops = { .cpu_disable = generic_cpu_disable, .cpu_die = generic_cpu_die, #endif -#if defined(CONFIG_KEXEC) && !defined(CONFIG_PPC64) +#if defined(CONFIG_KEXEC_CORE) && !defined(CONFIG_PPC64) .give_timebase = smp_generic_give_timebase, .take_timebase = smp_generic_take_timebase, #endif }; -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE #ifdef CONFIG_PPC32 atomic_t kexec_down_cpus = ATOMIC_INIT(0); @@ -458,7 +458,7 @@ static void mpc85xx_smp_machine_kexec(struct kimage *image) default_machine_kexec(image); } -#endif /* CONFIG_KEXEC */ +#endif /* CONFIG_KEXEC_CORE */ static void smp_85xx_basic_setup(int cpu_nr) { @@ -512,7 +512,7 @@ void __init mpc85xx_smp_init(void) #endif smp_ops = &smp_85xx_ops; -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE ppc_md.kexec_cpu_down = mpc85xx_smp_kexec_cpu_down; ppc_md.machine_kexec = mpc85xx_smp_machine_kexec; #endif diff --git a/arch/powerpc/platforms/8xx/Kconfig b/arch/powerpc/platforms/8xx/Kconfig index 564d99b..80cbcb0 100644 --- a/arch/powerpc/platforms/8xx/Kconfig +++ b/arch/powerpc/platforms/8xx/Kconfig @@ -130,6 +130,7 @@ config 8xx_CPU6 config 8xx_CPU15 bool "CPU15 Silicon Errata" + depends on !HUGETLB_PAGE default y help This enables a workaround for erratum CPU15 on MPC8xx chips. diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index fbdae83..7e3a2eb 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -168,17 +168,6 @@ config MPIC_BROKEN_REGREAD well, but enabling it uses about 8KB of memory to keep copies of the register contents in software. -config IBMVIO - depends on PPC_PSERIES - bool - default y - -config IBMEBUS - depends on PPC_PSERIES - bool "Support for GX bus based adapters" - help - Bus device driver for GX bus based adapters. - config EEH bool depends on (PPC_POWERNV || PPC_PSERIES) && PCI diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index ca2da30..6e89e5a 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -34,6 +34,7 @@ config PPC_8xx select FSL_SOC select 8xx select PPC_LIB_RHEAP + select SYS_SUPPORTS_HUGETLBFS config 40x bool "AMCC 40x" diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index d9088f0..a4522f0 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -17,10 +17,10 @@ config PPC_CELL_NATIVE select PPC_CELL_COMMON select MPIC select PPC_IO_WORKAROUNDS - select IBM_EMAC_EMAC4 - select IBM_EMAC_RGMII - select IBM_EMAC_ZMII #test only - select IBM_EMAC_TAH #test only + select IBM_EMAC_EMAC4 if IBM_EMAC + select IBM_EMAC_RGMII if IBM_EMAC + select IBM_EMAC_ZMII if IBM_EMAC #test only + select IBM_EMAC_TAH if IBM_EMAC #test only default n config PPC_IBM_CELL_BLADE @@ -46,7 +46,6 @@ config SPU_FS default m depends on PPC_CELL select SPU_BASE - select MEMORY_HOTPLUG help The SPU file system is used to access Synergistic Processing Units on machines implementing the Broadband Processor diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index e84d8fb..96c2b8a 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -676,7 +676,7 @@ static ssize_t spu_stat_show(struct device *dev, static DEVICE_ATTR(stat, 0444, spu_stat_show, NULL); -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE struct crash_spu_info { struct spu *spu; diff --git a/arch/powerpc/platforms/embedded6xx/holly.c b/arch/powerpc/platforms/embedded6xx/holly.c index dfd3100..0409714 100644 --- a/arch/powerpc/platforms/embedded6xx/holly.c +++ b/arch/powerpc/platforms/embedded6xx/holly.c @@ -263,7 +263,7 @@ static int ppc750_machine_check_exception(struct pt_regs *regs) if ((entry = search_exception_tables(regs->nip)) != NULL) { tsi108_clear_pci_cfg_error(); regs->msr |= MSR_RI; - regs->nip = entry->fixup; + regs->nip = extable_fixup(entry); return 1; } return 0; diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c index f97bab8..9de100e 100644 --- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c +++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c @@ -174,7 +174,7 @@ static int mpc7448_machine_check_exception(struct pt_regs *regs) if ((entry = search_exception_tables(regs->nip)) != NULL) { tsi108_clear_pci_cfg_error(); regs->msr |= MSR_RI; - regs->nip = entry->fixup; + regs->nip = extable_fixup(entry); return 1; } return 0; diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c index c8c217b..f627c9f 100644 --- a/arch/powerpc/platforms/powermac/low_i2c.c +++ b/arch/powerpc/platforms/powermac/low_i2c.c @@ -90,6 +90,7 @@ struct pmac_i2c_bus int opened; int polled; /* open mode */ struct platform_device *platform_dev; + struct lock_class_key lock_key; /* ops */ int (*open)(struct pmac_i2c_bus *bus); @@ -587,6 +588,7 @@ static void __init kw_i2c_add(struct pmac_i2c_host_kw *host, bus->close = kw_i2c_close; bus->xfer = kw_i2c_xfer; mutex_init(&bus->mutex); + lockdep_set_class(&bus->mutex, &bus->lock_key); if (controller == busnode) bus->flags = pmac_i2c_multibus; list_add(&bus->link, &pmac_i2c_busses); @@ -815,6 +817,7 @@ static void __init pmu_i2c_probe(void) bus->hostdata = bus + 1; bus->xfer = pmu_i2c_xfer; mutex_init(&bus->mutex); + lockdep_set_class(&bus->mutex, &bus->lock_key); bus->flags = pmac_i2c_multibus; list_add(&bus->link, &pmac_i2c_busses); @@ -938,6 +941,7 @@ static void __init smu_i2c_probe(void) bus->hostdata = bus + 1; bus->xfer = smu_i2c_xfer; mutex_init(&bus->mutex); + lockdep_set_class(&bus->mutex, &bus->lock_key); bus->flags = 0; list_add(&bus->link, &pmac_i2c_busses); diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 2354ea5..6fb5522 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -393,7 +393,7 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data) /* Create PE */ ret = eeh_add_to_parent_pe(edev); if (ret) { - pr_warn("%s: Can't add PCI dev %04x:%02x:%02x.%01x to parent PE (%d)\n", + pr_warn("%s: Can't add PCI dev %04x:%02x:%02x.%01x to parent PE (%x)\n", __func__, hose->global_number, pdn->busno, PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn), ret); return NULL; @@ -1097,7 +1097,7 @@ static int pnv_eeh_reset(struct eeh_pe *pe, int option) bus = eeh_pe_bus_get(pe); if (!bus) { - pr_err("%s: Cannot find PCI bus for PHB#%d-PE#%x\n", + pr_err("%s: Cannot find PCI bus for PHB#%x-PE#%x\n", __func__, pe->phb->global_number, pe->addr); return -EIO; } diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index aec85e7..73b155f 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -263,7 +263,7 @@ static int pnv_npu_dma_set_bypass(struct pnv_ioda_pe *npe) /* Enable the bypass window */ top = roundup_pow_of_two(top); - dev_info(&npe->pdev->dev, "Enabling bypass for PE %d\n", + dev_info(&npe->pdev->dev, "Enabling bypass for PE %x\n", npe->pe_number); rc = opal_pci_map_pe_dma_window_real(phb->opal_id, npe->pe_number, npe->pe_number, diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index b3b8930..2822935 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -632,21 +632,11 @@ static void __init opal_dump_region_init(void) "rc = %d\n", rc); } -static void opal_pdev_init(struct device_node *opal_node, - const char *compatible) +static void opal_pdev_init(const char *compatible) { struct device_node *np; - for_each_child_of_node(opal_node, np) - if (of_device_is_compatible(np, compatible)) - of_platform_device_create(np, NULL, NULL); -} - -static void opal_i2c_create_devs(void) -{ - struct device_node *np; - - for_each_compatible_node(np, NULL, "ibm,opal-i2c") + for_each_compatible_node(np, NULL, compatible) of_platform_device_create(np, NULL, NULL); } @@ -718,7 +708,7 @@ static int __init opal_init(void) opal_hmi_handler_init(); /* Create i2c platform devices */ - opal_i2c_create_devs(); + opal_pdev_init("ibm,opal-i2c"); /* Setup a heatbeat thread if requested by OPAL */ opal_init_heartbeat(); @@ -753,12 +743,12 @@ static int __init opal_init(void) } /* Initialize platform devices: IPMI backend, PRD & flash interface */ - opal_pdev_init(opal_node, "ibm,opal-ipmi"); - opal_pdev_init(opal_node, "ibm,opal-flash"); - opal_pdev_init(opal_node, "ibm,opal-prd"); + opal_pdev_init("ibm,opal-ipmi"); + opal_pdev_init("ibm,opal-flash"); + opal_pdev_init("ibm,opal-prd"); /* Initialise platform device: oppanel interface */ - opal_pdev_init(opal_node, "ibm,opal-oppanel"); + opal_pdev_init("ibm,opal-oppanel"); /* Initialise OPAL kmsg dumper for flushing console on panic */ opal_kmsg_init(); diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index d4b33dd..b07680c 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -83,7 +83,7 @@ void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, PCI_SLOT(pe->rid), PCI_FUNC(pe->rid)); #endif /* CONFIG_PCI_IOV*/ - printk("%spci %s: [PE# %.3d] %pV", + printk("%spci %s: [PE# %.2x] %pV", level, pfix, pe->pe_number, &vaf); va_end(args); @@ -145,8 +145,8 @@ static struct pnv_ioda_pe *pnv_ioda_init_pe(struct pnv_phb *phb, int pe_no) */ rc = opal_pci_eeh_freeze_clear(phb->opal_id, pe_no, OPAL_EEH_ACTION_CLEAR_FREEZE_ALL); - if (rc != OPAL_SUCCESS) - pr_warn("%s: Error %lld unfreezing PHB#%d-PE#%d\n", + if (rc != OPAL_SUCCESS && rc != OPAL_UNSUPPORTED) + pr_warn("%s: Error %lld unfreezing PHB#%x-PE#%x\n", __func__, rc, phb->hose->global_number, pe_no); return &phb->ioda.pe_array[pe_no]; @@ -155,13 +155,13 @@ static struct pnv_ioda_pe *pnv_ioda_init_pe(struct pnv_phb *phb, int pe_no) static void pnv_ioda_reserve_pe(struct pnv_phb *phb, int pe_no) { if (!(pe_no >= 0 && pe_no < phb->ioda.total_pe_num)) { - pr_warn("%s: Invalid PE %d on PHB#%x\n", + pr_warn("%s: Invalid PE %x on PHB#%x\n", __func__, pe_no, phb->hose->global_number); return; } if (test_and_set_bit(pe_no, phb->ioda.pe_alloc)) - pr_debug("%s: PE %d was reserved on PHB#%x\n", + pr_debug("%s: PE %x was reserved on PHB#%x\n", __func__, pe_no, phb->hose->global_number); pnv_ioda_init_pe(phb, pe_no); @@ -229,7 +229,7 @@ static int pnv_ioda2_init_m64(struct pnv_phb *phb) else if (phb->ioda.reserved_pe_idx == (phb->ioda.total_pe_num - 1)) r->end -= (2 * phb->ioda.m64_segsize); else - pr_warn(" Cannot strip M64 segment for reserved PE#%d\n", + pr_warn(" Cannot strip M64 segment for reserved PE#%x\n", phb->ioda.reserved_pe_idx); return 0; @@ -291,7 +291,7 @@ static int pnv_ioda1_init_m64(struct pnv_phb *phb) OPAL_M64_WINDOW_TYPE, index, base, 0, PNV_IODA1_M64_SEGS * segsz); if (rc != OPAL_SUCCESS) { - pr_warn(" Error %lld setting M64 PHB#%d-BAR#%d\n", + pr_warn(" Error %lld setting M64 PHB#%x-BAR#%d\n", rc, phb->hose->global_number, index); goto fail; } @@ -300,7 +300,7 @@ static int pnv_ioda1_init_m64(struct pnv_phb *phb) OPAL_M64_WINDOW_TYPE, index, OPAL_ENABLE_M64_SPLIT); if (rc != OPAL_SUCCESS) { - pr_warn(" Error %lld enabling M64 PHB#%d-BAR#%d\n", + pr_warn(" Error %lld enabling M64 PHB#%x-BAR#%d\n", rc, phb->hose->global_number, index); goto fail; } @@ -316,7 +316,7 @@ static int pnv_ioda1_init_m64(struct pnv_phb *phb) else if (phb->ioda.reserved_pe_idx == (phb->ioda.total_pe_num - 1)) r->end -= (2 * phb->ioda.m64_segsize); else - WARN(1, "Wrong reserved PE#%d on PHB#%d\n", + WARN(1, "Wrong reserved PE#%x on PHB#%x\n", phb->ioda.reserved_pe_idx, phb->hose->global_number); return 0; @@ -414,7 +414,7 @@ static struct pnv_ioda_pe *pnv_ioda_pick_m64_pe(struct pci_bus *bus, bool all) pe->pe_number / PNV_IODA1_M64_SEGS, pe->pe_number % PNV_IODA1_M64_SEGS); if (rc != OPAL_SUCCESS) - pr_warn("%s: Error %lld mapping M64 for PHB#%d-PE#%d\n", + pr_warn("%s: Error %lld mapping M64 for PHB#%x-PE#%x\n", __func__, rc, phb->hose->global_number, pe->pe_number); } @@ -941,14 +941,14 @@ static int pnv_ioda_configure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe) pe->mve_number = pe->pe_number; rc = opal_pci_set_mve(phb->opal_id, pe->mve_number, pe->pe_number); if (rc != OPAL_SUCCESS) { - pe_err(pe, "OPAL error %ld setting up MVE %d\n", + pe_err(pe, "OPAL error %ld setting up MVE %x\n", rc, pe->mve_number); pe->mve_number = -1; } else { rc = opal_pci_set_mve_enable(phb->opal_id, pe->mve_number, OPAL_ENABLE_MVE); if (rc) { - pe_err(pe, "OPAL error %ld enabling MVE %d\n", + pe_err(pe, "OPAL error %ld enabling MVE %x\n", rc, pe->mve_number); pe->mve_number = -1; } @@ -1159,10 +1159,10 @@ static struct pnv_ioda_pe *pnv_ioda_setup_bus_PE(struct pci_bus *bus, bool all) pe->rid = bus->busn_res.start << 8; if (all) - pe_info(pe, "Secondary bus %d..%d associated with PE#%d\n", + pe_info(pe, "Secondary bus %d..%d associated with PE#%x\n", bus->busn_res.start, bus->busn_res.end, pe->pe_number); else - pe_info(pe, "Secondary bus %d associated with PE#%d\n", + pe_info(pe, "Secondary bus %d associated with PE#%x\n", bus->busn_res.start, pe->pe_number); if (pnv_ioda_configure_pe(phb, pe)) { @@ -1213,7 +1213,7 @@ static struct pnv_ioda_pe *pnv_ioda_setup_npu_PE(struct pci_dev *npu_pdev) * peer NPU. */ dev_info(&npu_pdev->dev, - "Associating to existing PE %d\n", pe_num); + "Associating to existing PE %x\n", pe_num); pci_dev_get(npu_pdev); npu_pdn = pci_get_pdn(npu_pdev); rid = npu_pdev->bus->number << 8 | npu_pdn->devfn; @@ -1539,7 +1539,7 @@ static void pnv_ioda_setup_vf_PE(struct pci_dev *pdev, u16 num_vfs) pe->rid = (pci_iov_virtfn_bus(pdev, vf_index) << 8) | pci_iov_virtfn_devfn(pdev, vf_index); - pe_info(pe, "VF %04d:%02d:%02d.%d associated with PE#%d\n", + pe_info(pe, "VF %04d:%02d:%02d.%d associated with PE#%x\n", hose->global_number, pdev->bus->number, PCI_SLOT(pci_iov_virtfn_devfn(pdev, vf_index)), PCI_FUNC(pci_iov_virtfn_devfn(pdev, vf_index)), pe_num); @@ -2844,7 +2844,7 @@ static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev, pnv_set_msi_irq_chip(phb, virq); pr_devel("%s: %s-bit MSI on hwirq %x (xive #%d)," - " address=%x_%08x data=%x PE# %d\n", + " address=%x_%08x data=%x PE# %x\n", pci_name(dev), is_64 ? "64" : "32", hwirq, xive_num, msg->address_hi, msg->address_lo, data, pe->pe_number); @@ -2993,7 +2993,7 @@ static void pnv_ioda_setup_pe_res(struct pnv_ioda_pe *pe, rc = opal_pci_map_pe_mmio_window(phb->opal_id, pe->pe_number, OPAL_IO_WINDOW_TYPE, 0, index); if (rc != OPAL_SUCCESS) { - pr_err("%s: Error %lld mapping IO segment#%d to PE#%d\n", + pr_err("%s: Error %lld mapping IO segment#%d to PE#%x\n", __func__, rc, index, pe->pe_number); break; } @@ -3017,7 +3017,7 @@ static void pnv_ioda_setup_pe_res(struct pnv_ioda_pe *pe, rc = opal_pci_map_pe_mmio_window(phb->opal_id, pe->pe_number, OPAL_M32_WINDOW_TYPE, 0, index); if (rc != OPAL_SUCCESS) { - pr_err("%s: Error %lld mapping M32 segment#%d to PE#%d", + pr_err("%s: Error %lld mapping M32 segment#%d to PE#%x", __func__, rc, index, pe->pe_number); break; } @@ -3281,7 +3281,7 @@ static void pnv_pci_setup_bridge(struct pci_bus *bus, unsigned long type) pnv_pci_ioda2_setup_dma_pe(phb, pe); break; default: - pr_warn("%s: No DMA for PHB#%d (type %d)\n", + pr_warn("%s: No DMA for PHB#%x (type %d)\n", __func__, phb->hose->global_number, phb->type); } } diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index db7b802..c6d554f 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -234,7 +234,7 @@ static void pnv_pci_dump_p7ioc_diag_data(struct pci_controller *hose, int i; data = (struct OpalIoP7IOCPhbErrorData *)common; - pr_info("P7IOC PHB#%d Diag-data (Version: %d)\n", + pr_info("P7IOC PHB#%x Diag-data (Version: %d)\n", hose->global_number, be32_to_cpu(common->version)); if (data->brdgCtl) @@ -326,7 +326,7 @@ static void pnv_pci_dump_phb3_diag_data(struct pci_controller *hose, int i; data = (struct OpalIoPhb3ErrorData*)common; - pr_info("PHB3 PHB#%d Diag-data (Version: %d)\n", + pr_info("PHB3 PHB#%x Diag-data (Version: %d)\n", hose->global_number, be32_to_cpu(common->version)); if (data->brdgCtl) pr_info("brdgCtl: %08x\n", @@ -516,7 +516,7 @@ static void pnv_pci_config_check_eeh(struct pci_dn *pdn) } } - pr_devel(" -> EEH check, bdfn=%04x PE#%d fstate=%x\n", + pr_devel(" -> EEH check, bdfn=%04x PE#%x fstate=%x\n", (pdn->busno << 8) | (pdn->devfn), pe_no, fstate); /* Clear the frozen state if applicable */ diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index efe8b6b..d50c7d9 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -174,7 +174,7 @@ static void pnv_shutdown(void) opal_shutdown(); } -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE static void pnv_kexec_wait_secondaries_down(void) { int my_cpu, i, notified = -1; @@ -245,7 +245,7 @@ static void pnv_kexec_cpu_down(int crash_shutdown, int secondary) opal_reinit_cpus(OPAL_REINIT_CPUS_HILE_BE); } } -#endif /* CONFIG_KEXEC */ +#endif /* CONFIG_KEXEC_CORE */ #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE static unsigned long pnv_memory_block_size(void) @@ -311,7 +311,7 @@ define_machine(powernv) { .machine_shutdown = pnv_shutdown, .power_save = NULL, .calibrate_decr = generic_calibrate_decr, -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE .kexec_cpu_down = pnv_kexec_cpu_down, #endif #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE diff --git a/arch/powerpc/platforms/ps3/setup.c b/arch/powerpc/platforms/ps3/setup.c index 3a487e7..6244bc8 100644 --- a/arch/powerpc/platforms/ps3/setup.c +++ b/arch/powerpc/platforms/ps3/setup.c @@ -250,7 +250,7 @@ static int __init ps3_probe(void) return 1; } -#if defined(CONFIG_KEXEC) +#if defined(CONFIG_KEXEC_CORE) static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) { int cpu = smp_processor_id(); @@ -276,7 +276,7 @@ define_machine(ps3) { .progress = ps3_progress, .restart = ps3_restart, .halt = ps3_halt, -#if defined(CONFIG_KEXEC) +#if defined(CONFIG_KEXEC_CORE) .kexec_cpu_down = ps3_kexec_cpu_down, #endif }; diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index bec90fb..e1c280a 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -127,3 +127,14 @@ config HV_PERF_CTRS systems. 24x7 is available on Power 8 systems. If unsure, select Y. + +config IBMVIO + depends on PPC_PSERIES + bool + default y + +config IBMEBUS + depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN + bool "Support for GX bus based adapters" + help + Bus device driver for GX bus based adapters. diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index fedc2ccf0..8f4ba08 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -8,7 +8,7 @@ obj-y := lpar.o hvCall.o nvram.o reconfig.o \ pci.o pci_dlpar.o eeh_pseries.o msi.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_SCANLOG) += scanlog.o -obj-$(CONFIG_KEXEC) += kexec.o +obj-$(CONFIG_KEXEC_CORE) += kexec.o obj-$(CONFIG_PSERIES_ENERGY) += pseries_energy.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug-cpu.o @@ -21,6 +21,8 @@ obj-$(CONFIG_CMM) += cmm.o obj-$(CONFIG_DTL) += dtl.o obj-$(CONFIG_IO_EVENT_IRQ) += io_event_irq.o obj-$(CONFIG_LPARCFG) += lparcfg.o +obj-$(CONFIG_IBMVIO) += vio.o +obj-$(CONFIG_IBMEBUS) += ibmebus.o ifeq ($(CONFIG_PPC_PSERIES),y) obj-$(CONFIG_SUSPEND) += suspend.o diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c index 66e7227..9723288 100644 --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -41,6 +41,8 @@ #include <linux/memory.h> #include <asm/plpar_wrappers.h> +#include "pseries.h" + #define CMM_DRIVER_VERSION "1.0.0" #define CMM_DEFAULT_DELAY 1 #define CMM_HOTPLUG_DELAY 5 @@ -109,6 +111,38 @@ static int hotplug_occurred; /* protected by the hotplug mutex */ static struct task_struct *cmm_thread_ptr; +static long plpar_page_set_loaned(unsigned long vpa) +{ + unsigned long cmo_page_sz = cmo_get_page_size(); + long rc = 0; + int i; + + for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz) + rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0); + + for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz) + plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, + vpa + i - cmo_page_sz, 0); + + return rc; +} + +static long plpar_page_set_active(unsigned long vpa) +{ + unsigned long cmo_page_sz = cmo_get_page_size(); + long rc = 0; + int i; + + for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz) + rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0); + + for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz) + plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, + vpa + i - cmo_page_sz, 0); + + return rc; +} + /** * cmm_alloc_pages - Allocate pages and mark them as loaned * @nr: number of pages to allocate diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index 423e450..76caa4a 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -418,84 +418,136 @@ void queue_hotplug_event(struct pseries_hp_errorlog *hp_errlog, } } -static ssize_t dlpar_store(struct class *class, struct class_attribute *attr, - const char *buf, size_t count) +static int dlpar_parse_resource(char **cmd, struct pseries_hp_errorlog *hp_elog) { - struct pseries_hp_errorlog *hp_elog; - struct completion hotplug_done; - const char *arg; - int rc; + char *arg; - hp_elog = kzalloc(sizeof(*hp_elog), GFP_KERNEL); - if (!hp_elog) { - rc = -ENOMEM; - goto dlpar_store_out; - } + arg = strsep(cmd, " "); + if (!arg) + return -EINVAL; - /* Parse out the request from the user, this will be in the form - * <resource> <action> <id_type> <id> - */ - arg = buf; - if (!strncmp(arg, "memory", 6)) { + if (sysfs_streq(arg, "memory")) { hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_MEM; - arg += strlen("memory "); - } else if (!strncmp(arg, "cpu", 3)) { + } else if (sysfs_streq(arg, "cpu")) { hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_CPU; - arg += strlen("cpu "); } else { - pr_err("Invalid resource specified: \"%s\"\n", buf); - rc = -EINVAL; - goto dlpar_store_out; + pr_err("Invalid resource specified.\n"); + return -EINVAL; } - if (!strncmp(arg, "add", 3)) { + return 0; +} + +static int dlpar_parse_action(char **cmd, struct pseries_hp_errorlog *hp_elog) +{ + char *arg; + + arg = strsep(cmd, " "); + if (!arg) + return -EINVAL; + + if (sysfs_streq(arg, "add")) { hp_elog->action = PSERIES_HP_ELOG_ACTION_ADD; - arg += strlen("add "); - } else if (!strncmp(arg, "remove", 6)) { + } else if (sysfs_streq(arg, "remove")) { hp_elog->action = PSERIES_HP_ELOG_ACTION_REMOVE; - arg += strlen("remove "); } else { - pr_err("Invalid action specified: \"%s\"\n", buf); - rc = -EINVAL; - goto dlpar_store_out; + pr_err("Invalid action specified.\n"); + return -EINVAL; } - if (!strncmp(arg, "index", 5)) { - u32 index; + return 0; +} +static int dlpar_parse_id_type(char **cmd, struct pseries_hp_errorlog *hp_elog) +{ + char *arg; + u32 count, index; + + arg = strsep(cmd, " "); + if (!arg) + return -EINVAL; + + if (sysfs_streq(arg, "index")) { hp_elog->id_type = PSERIES_HP_ELOG_ID_DRC_INDEX; - arg += strlen("index "); + arg = strsep(cmd, " "); + if (!arg) { + pr_err("No DRC Index specified.\n"); + return -EINVAL; + } + if (kstrtou32(arg, 0, &index)) { - rc = -EINVAL; - pr_err("Invalid drc_index specified: \"%s\"\n", buf); - goto dlpar_store_out; + pr_err("Invalid DRC Index specified.\n"); + return -EINVAL; } hp_elog->_drc_u.drc_index = cpu_to_be32(index); - } else if (!strncmp(arg, "count", 5)) { - u32 count; - + } else if (sysfs_streq(arg, "count")) { hp_elog->id_type = PSERIES_HP_ELOG_ID_DRC_COUNT; - arg += strlen("count "); + arg = strsep(cmd, " "); + if (!arg) { + pr_err("No DRC count specified.\n"); + return -EINVAL; + } + if (kstrtou32(arg, 0, &count)) { - rc = -EINVAL; - pr_err("Invalid count specified: \"%s\"\n", buf); - goto dlpar_store_out; + pr_err("Invalid DRC count specified.\n"); + return -EINVAL; } hp_elog->_drc_u.drc_count = cpu_to_be32(count); } else { - pr_err("Invalid id_type specified: \"%s\"\n", buf); - rc = -EINVAL; - goto dlpar_store_out; + pr_err("Invalid id_type specified.\n"); + return -EINVAL; + } + + return 0; +} + +static ssize_t dlpar_store(struct class *class, struct class_attribute *attr, + const char *buf, size_t count) +{ + struct pseries_hp_errorlog *hp_elog; + struct completion hotplug_done; + char *argbuf; + char *args; + int rc; + + args = argbuf = kstrdup(buf, GFP_KERNEL); + hp_elog = kzalloc(sizeof(*hp_elog), GFP_KERNEL); + if (!hp_elog || !argbuf) { + pr_info("Could not allocate resources for DLPAR operation\n"); + kfree(argbuf); + kfree(hp_elog); + return -ENOMEM; } + /* + * Parse out the request from the user, this will be in the form: + * <resource> <action> <id_type> <id> + */ + rc = dlpar_parse_resource(&args, hp_elog); + if (rc) + goto dlpar_store_out; + + rc = dlpar_parse_action(&args, hp_elog); + if (rc) + goto dlpar_store_out; + + rc = dlpar_parse_id_type(&args, hp_elog); + if (rc) + goto dlpar_store_out; + init_completion(&hotplug_done); queue_hotplug_event(hp_elog, &hotplug_done, &rc); wait_for_completion(&hotplug_done); dlpar_store_out: + kfree(argbuf); kfree(hp_elog); + + if (rc) + pr_err("Could not handle DLPAR request \"%s\"\n", buf); + return rc ? rc : count; } diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 1c428f0..1eef46d 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -270,7 +270,7 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data) eeh_add_flag(EEH_ENABLED); eeh_add_to_parent_pe(edev); - pr_debug("%s: EEH enabled on %02x:%02x.%01x PHB#%d-PE#%x\n", + pr_debug("%s: EEH enabled on %02x:%02x.%01x PHB#%x-PE#%x\n", __func__, pdn->busno, PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn), pe.phb->global_number, pe.addr); @@ -371,7 +371,7 @@ static int pseries_eeh_get_pe_addr(struct eeh_pe *pe) pe->config_addr, BUID_HI(pe->phb->buid), BUID_LO(pe->phb->buid), 0); if (ret) { - pr_warn("%s: Failed to get address for PHB#%d-PE#%x\n", + pr_warn("%s: Failed to get address for PHB#%x-PE#%x\n", __func__, pe->phb->global_number, pe->config_addr); return 0; } @@ -384,7 +384,7 @@ static int pseries_eeh_get_pe_addr(struct eeh_pe *pe) pe->config_addr, BUID_HI(pe->phb->buid), BUID_LO(pe->phb->buid), 0); if (ret) { - pr_warn("%s: Failed to get address for PHB#%d-PE#%x\n", + pr_warn("%s: Failed to get address for PHB#%x-PE#%x\n", __func__, pe->phb->global_number, pe->config_addr); return 0; } @@ -653,7 +653,7 @@ static int pseries_eeh_configure_bridge(struct eeh_pe *pe) rtas_busy_delay(ret); } - pr_warn("%s: Unable to configure bridge PHB#%d-PE#%x (%d)\n", + pr_warn("%s: Unable to configure bridge PHB#%x-PE#%x (%d)\n", __func__, pe->phb->global_number, pe->addr, ret); return ret; } diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 76ec104..2617f9f 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -472,12 +472,15 @@ static int dlpar_memory_remove_by_count(u32 lmbs_to_remove, /* Validate that there are enough LMBs to satisfy the request */ for (i = 0; i < num_lmbs; i++) { - if (lmbs[i].flags & DRCONF_MEM_ASSIGNED) + if (lmb_is_removable(&lmbs[i])) lmbs_available++; } - if (lmbs_available < lmbs_to_remove) + if (lmbs_available < lmbs_to_remove) { + pr_info("Not enough LMBs available (%d of %d) to satisfy request\n", + lmbs_available, lmbs_to_remove); return -EINVAL; + } for (i = 0; i < num_lmbs && lmbs_removed < lmbs_to_remove; i++) { rc = dlpar_remove_lmb(&lmbs[i]); diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c index 6ca9a2f..614c285 100644 --- a/arch/powerpc/kernel/ibmebus.c +++ b/arch/powerpc/platforms/pseries/ibmebus.c @@ -180,6 +180,7 @@ static int ibmebus_create_device(struct device_node *dn) static int ibmebus_create_devices(const struct of_device_id *matches) { struct device_node *root, *child; + struct device *dev; int ret = 0; root = of_find_node_by_path("/"); @@ -188,9 +189,12 @@ static int ibmebus_create_devices(const struct of_device_id *matches) if (!of_match_node(matches, child)) continue; - if (bus_find_device(&ibmebus_bus_type, NULL, child, - ibmebus_match_node)) + dev = bus_find_device(&ibmebus_bus_type, NULL, child, + ibmebus_match_node); + if (dev) { + put_device(dev); continue; + } ret = ibmebus_create_device(child); if (ret) { @@ -262,6 +266,7 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus, const char *buf, size_t count) { struct device_node *dn = NULL; + struct device *dev; char *path; ssize_t rc = 0; @@ -269,8 +274,10 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus, if (!path) return -ENOMEM; - if (bus_find_device(&ibmebus_bus_type, NULL, path, - ibmebus_match_path)) { + dev = bus_find_device(&ibmebus_bus_type, NULL, path, + ibmebus_match_path); + if (dev) { + put_device(dev); printk(KERN_WARNING "%s: %s has already been probed\n", __func__, path); rc = -EEXIST; @@ -307,6 +314,7 @@ static ssize_t ibmebus_store_remove(struct bus_type *bus, if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path, ibmebus_match_path))) { of_device_unregister(to_platform_device(dev)); + put_device(dev); kfree(path); return count; @@ -415,303 +423,6 @@ static struct device_attribute ibmebus_bus_device_attrs[] = { __ATTR_NULL }; -#ifdef CONFIG_PM_SLEEP -static int ibmebus_bus_legacy_suspend(struct device *dev, pm_message_t mesg) -{ - struct platform_device *of_dev = to_platform_device(dev); - struct platform_driver *drv = to_platform_driver(dev->driver); - int ret = 0; - - if (dev->driver && drv->suspend) - ret = drv->suspend(of_dev, mesg); - return ret; -} - -static int ibmebus_bus_legacy_resume(struct device *dev) -{ - struct platform_device *of_dev = to_platform_device(dev); - struct platform_driver *drv = to_platform_driver(dev->driver); - int ret = 0; - - if (dev->driver && drv->resume) - ret = drv->resume(of_dev); - return ret; -} - -static int ibmebus_bus_pm_prepare(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (drv && drv->pm && drv->pm->prepare) - ret = drv->pm->prepare(dev); - - return ret; -} - -static void ibmebus_bus_pm_complete(struct device *dev) -{ - struct device_driver *drv = dev->driver; - - if (drv && drv->pm && drv->pm->complete) - drv->pm->complete(dev); -} - -#ifdef CONFIG_SUSPEND - -static int ibmebus_bus_pm_suspend(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->suspend) - ret = drv->pm->suspend(dev); - } else { - ret = ibmebus_bus_legacy_suspend(dev, PMSG_SUSPEND); - } - - return ret; -} - -static int ibmebus_bus_pm_suspend_noirq(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->suspend_noirq) - ret = drv->pm->suspend_noirq(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_resume(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->resume) - ret = drv->pm->resume(dev); - } else { - ret = ibmebus_bus_legacy_resume(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_resume_noirq(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->resume_noirq) - ret = drv->pm->resume_noirq(dev); - } - - return ret; -} - -#else /* !CONFIG_SUSPEND */ - -#define ibmebus_bus_pm_suspend NULL -#define ibmebus_bus_pm_resume NULL -#define ibmebus_bus_pm_suspend_noirq NULL -#define ibmebus_bus_pm_resume_noirq NULL - -#endif /* !CONFIG_SUSPEND */ - -#ifdef CONFIG_HIBERNATE_CALLBACKS - -static int ibmebus_bus_pm_freeze(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->freeze) - ret = drv->pm->freeze(dev); - } else { - ret = ibmebus_bus_legacy_suspend(dev, PMSG_FREEZE); - } - - return ret; -} - -static int ibmebus_bus_pm_freeze_noirq(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->freeze_noirq) - ret = drv->pm->freeze_noirq(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_thaw(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->thaw) - ret = drv->pm->thaw(dev); - } else { - ret = ibmebus_bus_legacy_resume(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_thaw_noirq(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->thaw_noirq) - ret = drv->pm->thaw_noirq(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_poweroff(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->poweroff) - ret = drv->pm->poweroff(dev); - } else { - ret = ibmebus_bus_legacy_suspend(dev, PMSG_HIBERNATE); - } - - return ret; -} - -static int ibmebus_bus_pm_poweroff_noirq(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->poweroff_noirq) - ret = drv->pm->poweroff_noirq(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_restore(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->restore) - ret = drv->pm->restore(dev); - } else { - ret = ibmebus_bus_legacy_resume(dev); - } - - return ret; -} - -static int ibmebus_bus_pm_restore_noirq(struct device *dev) -{ - struct device_driver *drv = dev->driver; - int ret = 0; - - if (!drv) - return 0; - - if (drv->pm) { - if (drv->pm->restore_noirq) - ret = drv->pm->restore_noirq(dev); - } - - return ret; -} - -#else /* !CONFIG_HIBERNATE_CALLBACKS */ - -#define ibmebus_bus_pm_freeze NULL -#define ibmebus_bus_pm_thaw NULL -#define ibmebus_bus_pm_poweroff NULL -#define ibmebus_bus_pm_restore NULL -#define ibmebus_bus_pm_freeze_noirq NULL -#define ibmebus_bus_pm_thaw_noirq NULL -#define ibmebus_bus_pm_poweroff_noirq NULL -#define ibmebus_bus_pm_restore_noirq NULL - -#endif /* !CONFIG_HIBERNATE_CALLBACKS */ - -static struct dev_pm_ops ibmebus_bus_dev_pm_ops = { - .prepare = ibmebus_bus_pm_prepare, - .complete = ibmebus_bus_pm_complete, - .suspend = ibmebus_bus_pm_suspend, - .resume = ibmebus_bus_pm_resume, - .freeze = ibmebus_bus_pm_freeze, - .thaw = ibmebus_bus_pm_thaw, - .poweroff = ibmebus_bus_pm_poweroff, - .restore = ibmebus_bus_pm_restore, - .suspend_noirq = ibmebus_bus_pm_suspend_noirq, - .resume_noirq = ibmebus_bus_pm_resume_noirq, - .freeze_noirq = ibmebus_bus_pm_freeze_noirq, - .thaw_noirq = ibmebus_bus_pm_thaw_noirq, - .poweroff_noirq = ibmebus_bus_pm_poweroff_noirq, - .restore_noirq = ibmebus_bus_pm_restore_noirq, -}; - -#define IBMEBUS_BUS_PM_OPS_PTR (&ibmebus_bus_dev_pm_ops) - -#else /* !CONFIG_PM_SLEEP */ - -#define IBMEBUS_BUS_PM_OPS_PTR NULL - -#endif /* !CONFIG_PM_SLEEP */ - struct bus_type ibmebus_bus_type = { .name = "ibmebus", .uevent = of_device_uevent_modalias, @@ -721,7 +432,6 @@ struct bus_type ibmebus_bus_type = { .remove = ibmebus_bus_device_remove, .shutdown = ibmebus_bus_device_shutdown, .dev_attrs = ibmebus_bus_device_attrs, - .pm = IBMEBUS_BUS_PM_OPS_PTR, }; EXPORT_SYMBOL(ibmebus_bus_type); diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index a78da51..5dc1c3c 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -221,7 +221,7 @@ static long pSeries_lpar_hpte_remove(unsigned long hpte_group) return -1; } -static void pSeries_lpar_hptab_clear(void) +static void manual_hpte_clear_all(void) { unsigned long size_bytes = 1UL << ppc64_pft_size; unsigned long hpte_count = size_bytes >> 4; @@ -249,6 +249,26 @@ static void pSeries_lpar_hptab_clear(void) &(ptes[j].pteh), &(ptes[j].ptel)); } } +} + +static int hcall_hpte_clear_all(void) +{ + int rc; + + do { + rc = plpar_hcall_norets(H_CLEAR_HPT); + } while (rc == H_CONTINUE); + + return rc; +} + +static void pseries_hpte_clear_all(void) +{ + int rc; + + rc = hcall_hpte_clear_all(); + if (rc != H_SUCCESS) + manual_hpte_clear_all(); #ifdef __LITTLE_ENDIAN__ /* @@ -598,7 +618,7 @@ void __init hpte_init_pseries(void) mmu_hash_ops.hpte_remove = pSeries_lpar_hpte_remove; mmu_hash_ops.hpte_removebolted = pSeries_lpar_hpte_removebolted; mmu_hash_ops.flush_hash_range = pSeries_lpar_flush_hash_range; - mmu_hash_ops.hpte_clear_all = pSeries_lpar_hptab_clear; + mmu_hash_ops.hpte_clear_all = pseries_hpte_clear_all; mmu_hash_ops.hugepage_invalidate = pSeries_lpar_hugepage_invalidate; } diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c index afa05a2..e639797 100644 --- a/arch/powerpc/platforms/pseries/lparcfg.c +++ b/arch/powerpc/platforms/pseries/lparcfg.c @@ -37,6 +37,7 @@ #include <asm/mmu.h> #include <asm/machdep.h> +#include "pseries.h" /* * This isn't a module but we expose that to userspace diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h index b1be7b7..1361a9d 100644 --- a/arch/powerpc/platforms/pseries/pseries.h +++ b/arch/powerpc/platforms/pseries/pseries.h @@ -79,4 +79,23 @@ extern struct pci_controller_ops pseries_pci_controller_ops; unsigned long pseries_memory_block_size(void); +extern int CMO_PrPSP; +extern int CMO_SecPSP; +extern unsigned long CMO_PageSize; + +static inline int cmo_get_primary_psp(void) +{ + return CMO_PrPSP; +} + +static inline int cmo_get_secondary_psp(void) +{ + return CMO_SecPSP; +} + +static inline unsigned long cmo_get_page_size(void) +{ + return CMO_PageSize; +} + #endif /* _PSERIES_PSERIES_H */ diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 97aa3f3..7736352 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -367,7 +367,7 @@ void pseries_disable_reloc_on_exc(void) } EXPORT_SYMBOL(pseries_disable_reloc_on_exc); -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE static void pSeries_machine_kexec(struct kimage *image) { if (firmware_has_feature(FW_FEATURE_SET_MODE)) @@ -725,7 +725,7 @@ define_machine(pseries) { .progress = rtas_progress, .system_reset_exception = pSeries_system_reset_exception, .machine_check_exception = pSeries_machine_check_exception, -#ifdef CONFIG_KEXEC +#ifdef CONFIG_KEXEC_CORE .machine_kexec = pSeries_machine_kexec, .kexec_cpu_down = pseries_kexec_cpu_down, #endif diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/platforms/pseries/vio.c index b3813dd..2c8fb3e 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/platforms/pseries/vio.c @@ -1648,6 +1648,9 @@ static struct vio_dev *vio_find_name(const char *name) /** * vio_find_node - find an already-registered vio_dev * @vnode: device_node of the virtual device we're looking for + * + * Takes a reference to the embedded struct device which needs to be dropped + * after use. */ struct vio_dev *vio_find_node(struct device_node *vnode) { diff --git a/arch/powerpc/purgatory/.gitignore b/arch/powerpc/purgatory/.gitignore new file mode 100644 index 0000000..e9e66f1 --- /dev/null +++ b/arch/powerpc/purgatory/.gitignore @@ -0,0 +1,2 @@ +kexec-purgatory.c +purgatory.ro diff --git a/arch/powerpc/purgatory/Makefile b/arch/powerpc/purgatory/Makefile new file mode 100644 index 0000000..ac8793c --- /dev/null +++ b/arch/powerpc/purgatory/Makefile @@ -0,0 +1,15 @@ +targets += trampoline.o purgatory.ro kexec-purgatory.c + +LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined + +$(obj)/purgatory.ro: $(obj)/trampoline.o FORCE + $(call if_changed,ld) + +CMD_BIN2C = $(objtree)/scripts/basic/bin2c +quiet_cmd_bin2c = BIN2C $@ + cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@ + +$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE + $(call if_changed,bin2c) + +obj-y += kexec-purgatory.o diff --git a/arch/powerpc/purgatory/trampoline.S b/arch/powerpc/purgatory/trampoline.S new file mode 100644 index 0000000..f9760cc --- /dev/null +++ b/arch/powerpc/purgatory/trampoline.S @@ -0,0 +1,128 @@ +/* + * kexec trampoline + * + * Based on code taken from kexec-tools and kexec-lite. + * + * Copyright (C) 2004 - 2005, Milton D Miller II, IBM Corporation + * Copyright (C) 2006, Mohan Kumar M, IBM Corporation + * Copyright (C) 2013, Anton Blanchard, IBM Corporation + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License as published by the Free + * Software Foundation (version 2 of the License). + */ + +#if defined(__LITTLE_ENDIAN__) +#define STWX_BE stwbrx +#define LWZX_BE lwbrx +#elif defined(__BIG_ENDIAN__) +#define STWX_BE stwx +#define LWZX_BE lwzx +#else +#error no endianness defined! +#endif + + .machine ppc64 + .balign 256 + .globl purgatory_start +purgatory_start: + b master + + /* ABI: possible run_at_load flag at 0x5c */ + .org purgatory_start + 0x5c + .globl run_at_load +run_at_load: + .long 0 + .size run_at_load, . - run_at_load + + /* ABI: slaves start at 60 with r3=phys */ + .org purgatory_start + 0x60 +slave: + b . + /* ABI: end of copied region */ + .org purgatory_start + 0x100 + .size purgatory_start, . - purgatory_start + +/* + * The above 0x100 bytes at purgatory_start are replaced with the + * code from the kernel (or next stage) by setup_purgatory(). + */ + +master: + or %r1,%r1,%r1 /* low priority to let other threads catchup */ + isync + mr %r17,%r3 /* save cpu id to r17 */ + mr %r15,%r4 /* save physical address in reg15 */ + + or %r3,%r3,%r3 /* ok now to high priority, lets boot */ + lis %r6,0x1 + mtctr %r6 /* delay a bit for slaves to catch up */ + bdnz . /* before we overwrite 0-100 again */ + + bl 0f /* Work out where we're running */ +0: mflr %r18 + + /* load device-tree address */ + ld %r3, (dt_offset - 0b)(%r18) + mr %r16,%r3 /* save dt address in reg16 */ + li %r4,20 + LWZX_BE %r6,%r3,%r4 /* fetch __be32 version number at byte 20 */ + cmpwi %r0,%r6,2 /* v2 or later? */ + blt 1f + li %r4,28 + STWX_BE %r17,%r3,%r4 /* Store my cpu as __be32 at byte 28 */ +1: + /* load the kernel address */ + ld %r4,(kernel - 0b)(%r18) + + /* load the run_at_load flag */ + /* possibly patched by kexec */ + ld %r6,(run_at_load - 0b)(%r18) + /* and patch it into the kernel */ + stw %r6,(0x5c)(%r4) + + mr %r3,%r16 /* restore dt address */ + + li %r5,0 /* r5 will be 0 for kernel */ + + mfmsr %r11 + andi. %r10,%r11,1 /* test MSR_LE */ + bne .Little_endian + + mtctr %r4 /* prepare branch to */ + bctr /* start kernel */ + +.Little_endian: + mtsrr0 %r4 /* prepare branch to */ + + clrrdi %r11,%r11,1 /* clear MSR_LE */ + mtsrr1 %r11 + + rfid /* update MSR and start kernel */ + + + .balign 8 + .globl kernel +kernel: + .llong 0x0 + .size kernel, . - kernel + + .balign 8 + .globl dt_offset +dt_offset: + .llong 0x0 + .size dt_offset, . - dt_offset + + + .data + .balign 8 +.globl sha256_digest +sha256_digest: + .skip 32 + .size sha256_digest, . - sha256_digest + + .balign 8 +.globl sha_regions +sha_regions: + .skip 8 * 2 * 16 + .size sha_regions, . - sha_regions diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c index 424b67f..5340a48 100644 --- a/arch/powerpc/sysdev/fsl_lbc.c +++ b/arch/powerpc/sysdev/fsl_lbc.c @@ -31,7 +31,7 @@ #include <asm/prom.h> #include <asm/fsl_lbc.h> -static spinlock_t fsl_lbc_lock = __SPIN_LOCK_UNLOCKED(fsl_lbc_lock); +static DEFINE_SPINLOCK(fsl_lbc_lock); struct fsl_lbc_ctrl *fsl_lbc_ctrl_dev; EXPORT_SYMBOL(fsl_lbc_ctrl_dev); diff --git a/arch/powerpc/sysdev/fsl_pmc.c b/arch/powerpc/sysdev/fsl_pmc.c index 1d6fd7c..232225e 100644 --- a/arch/powerpc/sysdev/fsl_pmc.c +++ b/arch/powerpc/sysdev/fsl_pmc.c @@ -85,8 +85,4 @@ static struct platform_driver pmc_driver = { .probe = pmc_probe, }; -static int __init pmc_init(void) -{ - return platform_driver_register(&pmc_driver); -} -device_initcall(pmc_init); +builtin_platform_driver(pmc_driver); diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 3cc7cac..1c41c51 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -80,10 +80,8 @@ "3: li %1,-1\n" \ " li %0,%3\n" \ " b 2b\n" \ - ".section __ex_table,\"a\"\n" \ - PPC_LONG_ALIGN "\n" \ - PPC_LONG "1b,3b\n" \ - ".text" \ + ".previous\n" \ + EX_TABLE(1b, 3b) \ : "=r" (err), "=r" (x) \ : "b" (addr), "i" (-EFAULT), "0" (err)) @@ -113,7 +111,7 @@ int fsl_rio_mcheck_exception(struct pt_regs *regs) out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); regs->msr |= MSR_RI; - regs->nip = entry->fixup; + regs->nip = extable_fixup(entry); return 1; } } diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index d93056e..19101f9 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -77,13 +77,10 @@ phys_addr_t get_immrbase(void) EXPORT_SYMBOL(get_immrbase); -static u32 sysfreq = -1; - u32 fsl_get_sys_freq(void) { + static u32 sysfreq = -1; struct device_node *soc; - const u32 *prop; - int size; if (sysfreq != -1) return sysfreq; @@ -92,12 +89,9 @@ u32 fsl_get_sys_freq(void) if (!soc) return -1; - prop = of_get_property(soc, "clock-frequency", &size); - if (!prop || size != sizeof(*prop) || *prop == 0) - prop = of_get_property(soc, "bus-frequency", &size); - - if (prop && size == sizeof(*prop)) - sysfreq = *prop; + of_property_read_u32(soc, "clock-frequency", &sysfreq); + if (sysfreq == -1 || !sysfreq) + of_property_read_u32(soc, "bus-frequency", &sysfreq); of_node_put(soc); return sysfreq; @@ -106,23 +100,17 @@ EXPORT_SYMBOL(fsl_get_sys_freq); #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx) -static u32 brgfreq = -1; - u32 get_brgfreq(void) { + static u32 brgfreq = -1; struct device_node *node; - const unsigned int *prop; - int size; if (brgfreq != -1) return brgfreq; node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); if (node) { - prop = of_get_property(node, "clock-frequency", &size); - if (prop && size == 4) - brgfreq = *prop; - + of_property_read_u32(node, "clock-frequency", &brgfreq); of_node_put(node); return brgfreq; } @@ -135,15 +123,11 @@ u32 get_brgfreq(void) node = of_find_node_by_type(NULL, "qe"); if (node) { - prop = of_get_property(node, "brg-frequency", &size); - if (prop && size == 4) - brgfreq = *prop; - - if (brgfreq == -1 || brgfreq == 0) { - prop = of_get_property(node, "bus-frequency", &size); - if (prop && size == 4) - brgfreq = *prop / 2; - } + of_property_read_u32(node, "brg-frequency", &brgfreq); + if (brgfreq == -1 || !brgfreq) + if (!of_property_read_u32(node, "bus-frequency", + &brgfreq)) + brgfreq /= 2; of_node_put(node); } @@ -152,10 +136,9 @@ u32 get_brgfreq(void) EXPORT_SYMBOL(get_brgfreq); -static u32 fs_baudrate = -1; - u32 get_baudrate(void) { + static u32 fs_baudrate = -1; struct device_node *node; if (fs_baudrate != -1) @@ -163,12 +146,7 @@ u32 get_baudrate(void) node = of_find_node_by_type(NULL, "serial"); if (node) { - int size; - const unsigned int *prop = of_get_property(node, - "current-speed", &size); - - if (prop) - fs_baudrate = *prop; + of_property_read_u32(node, "current-speed", &fs_baudrate); of_node_put(node); } diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c index 57c971b..53a16aa 100644 --- a/arch/powerpc/sysdev/tsi108_pci.c +++ b/arch/powerpc/sysdev/tsi108_pci.c @@ -137,10 +137,8 @@ void tsi108_clear_pci_error(u32 pci_cfg_base) ".section .fixup,\"ax\"\n" \ "3: li %0,-1\n" \ " b 2b\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 2\n" \ - " .long 1b,3b\n" \ - ".text" \ + ".previous\n" \ + EX_TABLE(1b, 3b) \ : "=r"(x) : "r"(addr)) int diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 7605455..9c0e17c 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -10,6 +10,8 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ + +#include <linux/kernel.h> #include <linux/errno.h> #include <linux/sched.h> #include <linux/smp.h> @@ -225,6 +227,7 @@ Commands:\n\ #endif "\ dr dump stream of raw bytes\n\ + dt dump the tracing buffers (uses printk)\n\ e print exception information\n\ f flush cache\n\ la lookup symbol+offset of specified address\n\ @@ -2364,6 +2367,9 @@ dump(void) dump_log_buf(); } else if (c == 'o') { dump_opal_msglog(); + } else if (c == 't') { + ftrace_dump(DUMP_ALL); + tracing_on(); } else if (c == 'r') { scanhex(&ndump); if (ndump == 0) diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 650830e..3741461 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -631,9 +631,9 @@ static int determine_backup_region(u64 start, u64 end, void *arg) int crash_load_segments(struct kimage *image) { - unsigned long src_start, src_sz, elf_sz; - void *elf_addr; int ret; + struct kexec_buf kbuf = { .image = image, .buf_min = 0, + .buf_max = ULONG_MAX, .top_down = false }; /* * Determine and load a segment for backup area. First 640K RAM @@ -647,43 +647,44 @@ int crash_load_segments(struct kimage *image) if (ret < 0) return ret; - src_start = image->arch.backup_src_start; - src_sz = image->arch.backup_src_sz; - /* Add backup segment. */ - if (src_sz) { + if (image->arch.backup_src_sz) { + kbuf.buffer = &crash_zero_bytes; + kbuf.bufsz = sizeof(crash_zero_bytes); + kbuf.memsz = image->arch.backup_src_sz; + kbuf.buf_align = PAGE_SIZE; /* * Ideally there is no source for backup segment. This is * copied in purgatory after crash. Just add a zero filled * segment for now to make sure checksum logic works fine. */ - ret = kexec_add_buffer(image, (char *)&crash_zero_bytes, - sizeof(crash_zero_bytes), src_sz, - PAGE_SIZE, 0, -1, 0, - &image->arch.backup_load_addr); + ret = kexec_add_buffer(&kbuf); if (ret) return ret; + image->arch.backup_load_addr = kbuf.mem; pr_debug("Loaded backup region at 0x%lx backup_start=0x%lx memsz=0x%lx\n", - image->arch.backup_load_addr, src_start, src_sz); + image->arch.backup_load_addr, + image->arch.backup_src_start, kbuf.memsz); } /* Prepare elf headers and add a segment */ - ret = prepare_elf_headers(image, &elf_addr, &elf_sz); + ret = prepare_elf_headers(image, &kbuf.buffer, &kbuf.bufsz); if (ret) return ret; - image->arch.elf_headers = elf_addr; - image->arch.elf_headers_sz = elf_sz; + image->arch.elf_headers = kbuf.buffer; + image->arch.elf_headers_sz = kbuf.bufsz; - ret = kexec_add_buffer(image, (char *)elf_addr, elf_sz, elf_sz, - ELF_CORE_HEADER_ALIGN, 0, -1, 0, - &image->arch.elf_load_addr); + kbuf.memsz = kbuf.bufsz; + kbuf.buf_align = ELF_CORE_HEADER_ALIGN; + ret = kexec_add_buffer(&kbuf); if (ret) { vfree((void *)image->arch.elf_headers); return ret; } + image->arch.elf_load_addr = kbuf.mem; pr_debug("Loaded ELF headers at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - image->arch.elf_load_addr, elf_sz, elf_sz); + image->arch.elf_load_addr, kbuf.bufsz, kbuf.bufsz); return ret; } diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 3407b14..d0a814a 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -331,17 +331,17 @@ static void *bzImage64_load(struct kimage *image, char *kernel, struct setup_header *header; int setup_sects, kern16_size, ret = 0; - unsigned long setup_header_size, params_cmdline_sz, params_misc_sz; + unsigned long setup_header_size, params_cmdline_sz; struct boot_params *params; unsigned long bootparam_load_addr, kernel_load_addr, initrd_load_addr; unsigned long purgatory_load_addr; - unsigned long kernel_bufsz, kernel_memsz, kernel_align; - char *kernel_buf; struct bzimage64_data *ldata; struct kexec_entry64_regs regs64; void *stack; unsigned int setup_hdr_offset = offsetof(struct boot_params, hdr); unsigned int efi_map_offset, efi_map_sz, efi_setup_data_offset; + struct kexec_buf kbuf = { .image = image, .buf_max = ULONG_MAX, + .top_down = true }; header = (struct setup_header *)(kernel + setup_hdr_offset); setup_sects = header->setup_sects; @@ -402,11 +402,11 @@ static void *bzImage64_load(struct kimage *image, char *kernel, params_cmdline_sz = sizeof(struct boot_params) + cmdline_len + MAX_ELFCOREHDR_STR_LEN; params_cmdline_sz = ALIGN(params_cmdline_sz, 16); - params_misc_sz = params_cmdline_sz + efi_map_sz + + kbuf.bufsz = params_cmdline_sz + efi_map_sz + sizeof(struct setup_data) + sizeof(struct efi_setup_data); - params = kzalloc(params_misc_sz, GFP_KERNEL); + params = kzalloc(kbuf.bufsz, GFP_KERNEL); if (!params) return ERR_PTR(-ENOMEM); efi_map_offset = params_cmdline_sz; @@ -418,37 +418,41 @@ static void *bzImage64_load(struct kimage *image, char *kernel, /* Is there a limit on setup header size? */ memcpy(¶ms->hdr, (kernel + setup_hdr_offset), setup_header_size); - ret = kexec_add_buffer(image, (char *)params, params_misc_sz, - params_misc_sz, 16, MIN_BOOTPARAM_ADDR, - ULONG_MAX, 1, &bootparam_load_addr); + kbuf.buffer = params; + kbuf.memsz = kbuf.bufsz; + kbuf.buf_align = 16; + kbuf.buf_min = MIN_BOOTPARAM_ADDR; + ret = kexec_add_buffer(&kbuf); if (ret) goto out_free_params; + bootparam_load_addr = kbuf.mem; pr_debug("Loaded boot_param, command line and misc at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - bootparam_load_addr, params_misc_sz, params_misc_sz); + bootparam_load_addr, kbuf.bufsz, kbuf.bufsz); /* Load kernel */ - kernel_buf = kernel + kern16_size; - kernel_bufsz = kernel_len - kern16_size; - kernel_memsz = PAGE_ALIGN(header->init_size); - kernel_align = header->kernel_alignment; - - ret = kexec_add_buffer(image, kernel_buf, - kernel_bufsz, kernel_memsz, kernel_align, - MIN_KERNEL_LOAD_ADDR, ULONG_MAX, 1, - &kernel_load_addr); + kbuf.buffer = kernel + kern16_size; + kbuf.bufsz = kernel_len - kern16_size; + kbuf.memsz = PAGE_ALIGN(header->init_size); + kbuf.buf_align = header->kernel_alignment; + kbuf.buf_min = MIN_KERNEL_LOAD_ADDR; + ret = kexec_add_buffer(&kbuf); if (ret) goto out_free_params; + kernel_load_addr = kbuf.mem; pr_debug("Loaded 64bit kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - kernel_load_addr, kernel_memsz, kernel_memsz); + kernel_load_addr, kbuf.bufsz, kbuf.memsz); /* Load initrd high */ if (initrd) { - ret = kexec_add_buffer(image, initrd, initrd_len, initrd_len, - PAGE_SIZE, MIN_INITRD_LOAD_ADDR, - ULONG_MAX, 1, &initrd_load_addr); + kbuf.buffer = initrd; + kbuf.bufsz = kbuf.memsz = initrd_len; + kbuf.buf_align = PAGE_SIZE; + kbuf.buf_min = MIN_INITRD_LOAD_ADDR; + ret = kexec_add_buffer(&kbuf); if (ret) goto out_free_params; + initrd_load_addr = kbuf.mem; pr_debug("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n", initrd_load_addr, initrd_len, initrd_len); diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig index d28690f..5d80810 100644 --- a/drivers/macintosh/Kconfig +++ b/drivers/macintosh/Kconfig @@ -102,7 +102,6 @@ config ADB_PMU_LED_DISK bool "Use front LED as DISK LED by default" depends on ADB_PMU_LED depends on LEDS_CLASS - depends on IDE_GD_ATA select LEDS_TRIGGERS select LEDS_TRIGGER_DISK help diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index 2e5233b..1b35e33 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -9,18 +9,119 @@ #include <linux/pci.h> #include <linux/slab.h> -#include <linux/anon_inodes.h> #include <linux/file.h> #include <misc/cxl.h> -#include <linux/fs.h> #include <asm/pnv-pci.h> #include <linux/msi.h> +#include <linux/module.h> +#include <linux/mount.h> #include "cxl.h" +/* + * Since we want to track memory mappings to be able to force-unmap + * when the AFU is no longer reachable, we need an inode. For devices + * opened through the cxl user API, this is not a problem, but a + * userland process can also get a cxl fd through the cxl_get_fd() + * API, which is used by the cxlflash driver. + * + * Therefore we implement our own simple pseudo-filesystem and inode + * allocator. We don't use the anonymous inode, as we need the + * meta-data associated with it (address_space) and it is shared by + * other drivers/processes, so it could lead to cxl unmapping VMAs + * from random processes. + */ + +#define CXL_PSEUDO_FS_MAGIC 0x1697697f + +static int cxl_fs_cnt; +static struct vfsmount *cxl_vfs_mount; + +static const struct dentry_operations cxl_fs_dops = { + .d_dname = simple_dname, +}; + +static struct dentry *cxl_fs_mount(struct file_system_type *fs_type, int flags, + const char *dev_name, void *data) +{ + return mount_pseudo(fs_type, "cxl:", NULL, &cxl_fs_dops, + CXL_PSEUDO_FS_MAGIC); +} + +static struct file_system_type cxl_fs_type = { + .name = "cxl", + .owner = THIS_MODULE, + .mount = cxl_fs_mount, + .kill_sb = kill_anon_super, +}; + + +void cxl_release_mapping(struct cxl_context *ctx) +{ + if (ctx->kernelapi && ctx->mapping) + simple_release_fs(&cxl_vfs_mount, &cxl_fs_cnt); +} + +static struct file *cxl_getfile(const char *name, + const struct file_operations *fops, + void *priv, int flags) +{ + struct qstr this; + struct path path; + struct file *file; + struct inode *inode = NULL; + int rc; + + /* strongly inspired by anon_inode_getfile() */ + + if (fops->owner && !try_module_get(fops->owner)) + return ERR_PTR(-ENOENT); + + rc = simple_pin_fs(&cxl_fs_type, &cxl_vfs_mount, &cxl_fs_cnt); + if (rc < 0) { + pr_err("Cannot mount cxl pseudo filesystem: %d\n", rc); + file = ERR_PTR(rc); + goto err_module; + } + + inode = alloc_anon_inode(cxl_vfs_mount->mnt_sb); + if (IS_ERR(inode)) { + file = ERR_CAST(inode); + goto err_fs; + } + + file = ERR_PTR(-ENOMEM); + this.name = name; + this.len = strlen(name); + this.hash = 0; + path.dentry = d_alloc_pseudo(cxl_vfs_mount->mnt_sb, &this); + if (!path.dentry) + goto err_inode; + + path.mnt = mntget(cxl_vfs_mount); + d_instantiate(path.dentry, inode); + + file = alloc_file(&path, OPEN_FMODE(flags), fops); + if (IS_ERR(file)) + goto err_dput; + file->f_flags = flags & (O_ACCMODE | O_NONBLOCK); + file->private_data = priv; + + return file; + +err_dput: + path_put(&path); +err_inode: + iput(inode); +err_fs: + simple_release_fs(&cxl_vfs_mount, &cxl_fs_cnt); +err_module: + module_put(fops->owner); + return file; +} + struct cxl_context *cxl_dev_context_init(struct pci_dev *dev) { - struct address_space *mapping; struct cxl_afu *afu; struct cxl_context *ctx; int rc; @@ -30,38 +131,20 @@ struct cxl_context *cxl_dev_context_init(struct pci_dev *dev) return ERR_CAST(afu); ctx = cxl_context_alloc(); - if (IS_ERR(ctx)) { - rc = PTR_ERR(ctx); - goto err_dev; - } + if (!ctx) + return ERR_PTR(-ENOMEM); ctx->kernelapi = true; - /* - * Make our own address space since we won't have one from the - * filesystem like the user api has, and even if we do associate a file - * with this context we don't want to use the global anonymous inode's - * address space as that can invalidate unrelated users: - */ - mapping = kmalloc(sizeof(struct address_space), GFP_KERNEL); - if (!mapping) { - rc = -ENOMEM; - goto err_ctx; - } - address_space_init_once(mapping); - /* Make it a slave context. We can promote it later? */ - rc = cxl_context_init(ctx, afu, false, mapping); + rc = cxl_context_init(ctx, afu, false); if (rc) - goto err_mapping; + goto err_ctx; return ctx; -err_mapping: - kfree(mapping); err_ctx: kfree(ctx); -err_dev: return ERR_PTR(rc); } EXPORT_SYMBOL_GPL(cxl_dev_context_init); @@ -340,6 +423,11 @@ struct file *cxl_get_fd(struct cxl_context *ctx, struct file_operations *fops, { struct file *file; int rc, flags, fdtmp; + char *name = NULL; + + /* only allow one per context */ + if (ctx->mapping) + return ERR_PTR(-EEXIST); flags = O_RDWR | O_CLOEXEC; @@ -363,12 +451,13 @@ struct file *cxl_get_fd(struct cxl_context *ctx, struct file_operations *fops, } else /* use default ops */ fops = (struct file_operations *)&afu_fops; - file = anon_inode_getfile("cxl", fops, ctx, flags); + name = kasprintf(GFP_KERNEL, "cxl:%d", ctx->pe); + file = cxl_getfile(name, fops, ctx, flags); + kfree(name); if (IS_ERR(file)) goto err_fd; - file->f_mapping = ctx->mapping; - + cxl_context_set_mapping(ctx, file->f_mapping); *fd = fdtmp; return file; @@ -541,7 +630,7 @@ int _cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) if (remaining > 0) { new_ctx = cxl_dev_context_init(pdev); - if (!new_ctx) { + if (IS_ERR(new_ctx)) { pr_warn("%s: Failed to allocate enough contexts for MSIs\n", pci_name(pdev)); return -ENOSPC; } diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c index 5d36dcc..3907387 100644 --- a/drivers/misc/cxl/context.c +++ b/drivers/misc/cxl/context.c @@ -34,8 +34,7 @@ struct cxl_context *cxl_context_alloc(void) /* * Initialises a CXL context. */ -int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master, - struct address_space *mapping) +int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master) { int i; @@ -44,7 +43,7 @@ int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master, ctx->master = master; ctx->pid = ctx->glpid = NULL; /* Set in start work ioctl */ mutex_init(&ctx->mapping_lock); - ctx->mapping = mapping; + ctx->mapping = NULL; /* * Allocate the segment table before we put it in the IDR so that we @@ -114,6 +113,14 @@ int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master, return 0; } +void cxl_context_set_mapping(struct cxl_context *ctx, + struct address_space *mapping) +{ + mutex_lock(&ctx->mapping_lock); + ctx->mapping = mapping; + mutex_unlock(&ctx->mapping_lock); +} + static int cxl_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct cxl_context *ctx = vma->vm_file->private_data; @@ -299,8 +306,6 @@ static void reclaim_ctx(struct rcu_head *rcu) if (ctx->ff_page) __free_page(ctx->ff_page); ctx->sstp = NULL; - if (ctx->kernelapi) - kfree(ctx->mapping); kfree(ctx->irq_bitmap); @@ -312,6 +317,8 @@ static void reclaim_ctx(struct rcu_head *rcu) void cxl_context_free(struct cxl_context *ctx) { + if (ctx->kernelapi && ctx->mapping) + cxl_release_mapping(ctx); mutex_lock(&ctx->afu->contexts_lock); idr_remove(&ctx->afu->contexts_idr, ctx->pe); mutex_unlock(&ctx->afu->contexts_lock); diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index a144073..b24d767 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -817,8 +817,9 @@ void cxl_dump_debug_buffer(void *addr, size_t size); void init_cxl_native(void); struct cxl_context *cxl_context_alloc(void); -int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master, - struct address_space *mapping); +int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master); +void cxl_context_set_mapping(struct cxl_context *ctx, + struct address_space *mapping); void cxl_context_free(struct cxl_context *ctx); int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma); unsigned int cxl_map_irq(struct cxl *adapter, irq_hw_number_t hwirq, @@ -877,6 +878,7 @@ void cxl_native_err_irq_dump_regs(struct cxl *adapter); void cxl_stop_trace(struct cxl *cxl); int cxl_pci_vphb_add(struct cxl_afu *afu); void cxl_pci_vphb_remove(struct cxl_afu *afu); +void cxl_release_mapping(struct cxl_context *ctx); extern struct pci_driver cxl_pci_driver; extern struct platform_driver cxl_of_driver; diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c index ec7b8a0..9c06ac8 100644 --- a/drivers/misc/cxl/debugfs.c +++ b/drivers/misc/cxl/debugfs.c @@ -43,12 +43,14 @@ static int debugfs_io_u64_set(void *data, u64 val) out_be64((u64 __iomem *)data, val); return 0; } -DEFINE_SIMPLE_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set, "0x%016llx\n"); +DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set, + "0x%016llx\n"); static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode, struct dentry *parent, u64 __iomem *value) { - return debugfs_create_file(name, mode, parent, (void __force *)value, &fops_io_x64); + return debugfs_create_file_unsafe(name, mode, parent, + (void __force *)value, &fops_io_x64); } void cxl_debugfs_add_adapter_psl_regs(struct cxl *adapter, struct dentry *dir) diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c index 77080cc..859959f 100644 --- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -86,9 +86,12 @@ static int __afu_open(struct inode *inode, struct file *file, bool master) goto err_put_afu; } - if ((rc = cxl_context_init(ctx, afu, master, inode->i_mapping))) + rc = cxl_context_init(ctx, afu, master); + if (rc) goto err_put_afu; + cxl_context_set_mapping(ctx, inode->i_mapping); + pr_devel("afu_open pe: %i\n", ctx->pe); file->private_data = ctx; cxl_ctx_get(); diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c index 3e102cd..e04bc4d 100644 --- a/drivers/misc/cxl/guest.c +++ b/drivers/misc/cxl/guest.c @@ -887,7 +887,7 @@ static void afu_handle_errstate(struct work_struct *work) afu_guest->previous_state == H_STATE_PERM_UNAVAILABLE) return; - if (afu_guest->handle_err == true) + if (afu_guest->handle_err) schedule_delayed_work(&afu_guest->work_err, msecs_to_jiffies(3000)); } diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c index dec60f5..1a402bb 100644 --- a/drivers/misc/cxl/irq.c +++ b/drivers/misc/cxl/irq.c @@ -104,7 +104,7 @@ irqreturn_t cxl_irq(int irq, struct cxl_context *ctx, struct cxl_irq_info *irq_i } else { spin_lock(&ctx->lock); ctx->afu_err = irq_info->afu_err; - ctx->pending_afu_err = 1; + ctx->pending_afu_err = true; spin_unlock(&ctx->lock); wake_up_all(&ctx->wq); diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index a217a74..09505f4 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -10,7 +10,6 @@ #include <linux/spinlock.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/sched.h> #include <linux/mutex.h> #include <linux/mm.h> #include <linux/uaccess.h> @@ -54,7 +53,7 @@ static int afu_control(struct cxl_afu *afu, u64 command, u64 clear, AFU_Cntl | command); cpu_relax(); AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); - }; + } if (AFU_Cntl & CXL_AFU_Cntl_An_RA) { /* @@ -167,7 +166,7 @@ int cxl_psl_purge(struct cxl_afu *afu) cpu_relax(); } PSL_CNTL = cxl_p1n_read(afu, CXL_PSL_SCNTL_An); - }; + } end = local_clock(); pr_devel("PSL purged in %lld ns\n", end - start); @@ -931,9 +930,18 @@ static irqreturn_t native_irq_multiplexed(int irq, void *data) struct cxl_afu *afu = data; struct cxl_context *ctx; struct cxl_irq_info irq_info; - int ph = cxl_p2n_read(afu, CXL_PSL_PEHandle_An) & 0xffff; - int ret; - + u64 phreg = cxl_p2n_read(afu, CXL_PSL_PEHandle_An); + int ph, ret; + + /* check if eeh kicked in while the interrupt was in flight */ + if (unlikely(phreg == ~0ULL)) { + dev_warn(&afu->dev, + "Ignoring slice interrupt(%d) due to fenced card", + irq); + return IRQ_HANDLED; + } + /* Mask the pe-handle from register value */ + ph = phreg & 0xffff; if ((ret = native_get_irq_info(afu, &irq_info))) { WARN(1, "Unable to get CXL IRQ Info: %i\n", ret); return fail_psl_irq(afu, &irq_info); diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index e96be9c..80a87ab 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -1921,7 +1921,7 @@ static pci_ers_result_t cxl_pci_slot_reset(struct pci_dev *pdev) goto err; ctx = cxl_dev_context_init(afu_dev); - if (!ctx) + if (IS_ERR(ctx)) goto err; afu_dev->dev.archdata.cxl_ctx = ctx; diff --git a/drivers/misc/cxl/phb.c b/drivers/misc/cxl/phb.c index 0935d44..6ec69ad 100644 --- a/drivers/misc/cxl/phb.c +++ b/drivers/misc/cxl/phb.c @@ -20,7 +20,7 @@ bool _cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu * in the virtual phb, we'll need a default context to attach them to. */ ctx = cxl_dev_context_init(dev); - if (!ctx) + if (IS_ERR(ctx)) return false; dev->dev.archdata.cxl_ctx = ctx; diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index dc67f39..c614ff7 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -257,8 +257,13 @@ static int dlpar_add_phb(char *drc_name, struct device_node *dn) static int dlpar_add_vio_slot(char *drc_name, struct device_node *dn) { - if (vio_find_node(dn)) + struct vio_dev *vio_dev; + + vio_dev = vio_find_node(dn); + if (vio_dev) { + put_device(&vio_dev->dev); return -EINVAL; + } if (!vio_register_device_node(dn)) { printk(KERN_ERR @@ -334,6 +339,9 @@ static int dlpar_remove_vio_slot(char *drc_name, struct device_node *dn) return -EINVAL; vio_unregister_device(vio_dev); + + put_device(&vio_dev->dev); + return 0; } diff --git a/drivers/soc/fsl/qbman/bman.c b/drivers/soc/fsl/qbman/bman.c index ffa48fd..a3d6d7c 100644 --- a/drivers/soc/fsl/qbman/bman.c +++ b/drivers/soc/fsl/qbman/bman.c @@ -167,12 +167,12 @@ struct bm_portal { /* Cache-inhibited register access. */ static inline u32 bm_in(struct bm_portal *p, u32 offset) { - return __raw_readl(p->addr.ci + offset); + return be32_to_cpu(__raw_readl(p->addr.ci + offset)); } static inline void bm_out(struct bm_portal *p, u32 offset, u32 val) { - __raw_writel(val, p->addr.ci + offset); + __raw_writel(cpu_to_be32(val), p->addr.ci + offset); } /* Cache Enabled Portal Access */ @@ -188,7 +188,7 @@ static inline void bm_cl_touch_ro(struct bm_portal *p, u32 offset) static inline u32 bm_ce_in(struct bm_portal *p, u32 offset) { - return __raw_readl(p->addr.ce + offset); + return be32_to_cpu(__raw_readl(p->addr.ce + offset)); } struct bman_portal { @@ -391,7 +391,7 @@ static void bm_rcr_finish(struct bm_portal *portal) i = bm_in(portal, BM_REG_RCR_PI_CINH) & (BM_RCR_SIZE - 1); if (i != rcr_ptr2idx(rcr->cursor)) - pr_crit("losing uncommited RCR entries\n"); + pr_crit("losing uncommitted RCR entries\n"); i = bm_in(portal, BM_REG_RCR_CI_CINH) & (BM_RCR_SIZE - 1); if (i != rcr->ci) diff --git a/drivers/soc/fsl/qbman/bman_ccsr.c b/drivers/soc/fsl/qbman/bman_ccsr.c index 9deb052..a8e8389 100644 --- a/drivers/soc/fsl/qbman/bman_ccsr.c +++ b/drivers/soc/fsl/qbman/bman_ccsr.c @@ -181,8 +181,7 @@ static int fsl_bman_probe(struct platform_device *pdev) node->full_name); return -ENXIO; } - bm_ccsr_start = devm_ioremap(dev, res->start, - res->end - res->start + 1); + bm_ccsr_start = devm_ioremap(dev, res->start, resource_size(res)); if (!bm_ccsr_start) return -ENXIO; diff --git a/drivers/soc/fsl/qbman/bman_portal.c b/drivers/soc/fsl/qbman/bman_portal.c index 986f646..8354d4d 100644 --- a/drivers/soc/fsl/qbman/bman_portal.c +++ b/drivers/soc/fsl/qbman/bman_portal.c @@ -126,15 +126,19 @@ static int bman_portal_probe(struct platform_device *pdev) pcfg->irq = irq; va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0); - if (!va) + if (!va) { + dev_err(dev, "ioremap::CE failed\n"); goto err_ioremap1; + } pcfg->addr_virt[DPAA_PORTAL_CE] = va; va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]), _PAGE_GUARDED | _PAGE_NO_CACHE); - if (!va) + if (!va) { + dev_err(dev, "ioremap::CI failed\n"); goto err_ioremap2; + } pcfg->addr_virt[DPAA_PORTAL_CI] = va; @@ -150,8 +154,10 @@ static int bman_portal_probe(struct platform_device *pdev) spin_unlock(&bman_lock); pcfg->cpu = cpu; - if (!init_pcfg(pcfg)) - goto err_ioremap2; + if (!init_pcfg(pcfg)) { + dev_err(dev, "portal init failed\n"); + goto err_portal_init; + } /* clear irq affinity if assigned cpu is offline */ if (!cpu_online(cpu)) @@ -159,10 +165,11 @@ static int bman_portal_probe(struct platform_device *pdev) return 0; +err_portal_init: + iounmap(pcfg->addr_virt[DPAA_PORTAL_CI]); err_ioremap2: iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]); err_ioremap1: - dev_err(dev, "ioremap failed\n"); return -ENXIO; } diff --git a/drivers/soc/fsl/qbman/dpaa_sys.h b/drivers/soc/fsl/qbman/dpaa_sys.h index b63fd72..2eaf318 100644 --- a/drivers/soc/fsl/qbman/dpaa_sys.h +++ b/drivers/soc/fsl/qbman/dpaa_sys.h @@ -38,6 +38,7 @@ #include <linux/kthread.h> #include <linux/vmalloc.h> #include <linux/platform_device.h> +#include <linux/of.h> #include <linux/of_reserved_mem.h> #include <linux/prefetch.h> #include <linux/genalloc.h> diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c index 119054b..6f509f6 100644 --- a/drivers/soc/fsl/qbman/qman.c +++ b/drivers/soc/fsl/qbman/qman.c @@ -140,10 +140,10 @@ enum qm_mr_cmode { /* matches QCSP_CFG::MM */ struct qm_eqcr_entry { u8 _ncw_verb; /* writes to this are non-coherent */ u8 dca; - u16 seqnum; - u32 orp; /* 24-bit */ - u32 fqid; /* 24-bit */ - u32 tag; + __be16 seqnum; + u8 __reserved[4]; + __be32 fqid; /* 24-bit */ + __be32 tag; struct qm_fd fd; u8 __reserved3[32]; } __packed; @@ -183,41 +183,22 @@ struct qm_mr { }; /* MC (Management Command) command */ -/* "Query FQ" */ -struct qm_mcc_queryfq { +/* "FQ" command layout */ +struct qm_mcc_fq { u8 _ncw_verb; u8 __reserved1[3]; - u32 fqid; /* 24-bit */ + __be32 fqid; /* 24-bit */ u8 __reserved2[56]; } __packed; -/* "Alter FQ State Commands " */ -struct qm_mcc_alterfq { - u8 _ncw_verb; - u8 __reserved1[3]; - u32 fqid; /* 24-bit */ - u8 __reserved2; - u8 count; /* number of consecutive FQID */ - u8 __reserved3[10]; - u32 context_b; /* frame queue context b */ - u8 __reserved4[40]; -} __packed; -/* "Query CGR" */ -struct qm_mcc_querycgr { +/* "CGR" command layout */ +struct qm_mcc_cgr { u8 _ncw_verb; u8 __reserved1[30]; u8 cgid; u8 __reserved2[32]; }; -struct qm_mcc_querywq { - u8 _ncw_verb; - u8 __reserved; - /* select channel if verb != QUERYWQ_DEDICATED */ - u16 channel_wq; /* ignores wq (3 lsbits): _res[0-2] */ - u8 __reserved2[60]; -} __packed; - #define QM_MCC_VERB_VBIT 0x80 #define QM_MCC_VERB_MASK 0x7f /* where the verb contains; */ #define QM_MCC_VERB_INITFQ_PARKED 0x40 @@ -243,12 +224,9 @@ union qm_mc_command { u8 __reserved[63]; }; struct qm_mcc_initfq initfq; - struct qm_mcc_queryfq queryfq; - struct qm_mcc_alterfq alterfq; struct qm_mcc_initcgr initcgr; - struct qm_mcc_querycgr querycgr; - struct qm_mcc_querywq querywq; - struct qm_mcc_queryfq_np queryfq_np; + struct qm_mcc_fq fq; + struct qm_mcc_cgr cgr; }; /* MC (Management Command) result */ @@ -343,12 +321,12 @@ struct qm_portal { /* Cache-inhibited register access. */ static inline u32 qm_in(struct qm_portal *p, u32 offset) { - return __raw_readl(p->addr.ci + offset); + return be32_to_cpu(__raw_readl(p->addr.ci + offset)); } static inline void qm_out(struct qm_portal *p, u32 offset, u32 val) { - __raw_writel(val, p->addr.ci + offset); + __raw_writel(cpu_to_be32(val), p->addr.ci + offset); } /* Cache Enabled Portal Access */ @@ -364,7 +342,7 @@ static inline void qm_cl_touch_ro(struct qm_portal *p, u32 offset) static inline u32 qm_ce_in(struct qm_portal *p, u32 offset) { - return __raw_readl(p->addr.ce + offset); + return be32_to_cpu(__raw_readl(p->addr.ce + offset)); } /* --- EQCR API --- */ @@ -443,7 +421,7 @@ static inline void qm_eqcr_finish(struct qm_portal *portal) DPAA_ASSERT(!eqcr->busy); if (pi != eqcr_ptr2idx(eqcr->cursor)) - pr_crit("losing uncommited EQCR entries\n"); + pr_crit("losing uncommitted EQCR entries\n"); if (ci != eqcr->ci) pr_crit("missing existing EQCR completions\n"); if (eqcr->ci != eqcr_ptr2idx(eqcr->cursor)) @@ -492,8 +470,7 @@ static inline struct qm_eqcr_entry *qm_eqcr_start_stash(struct qm_portal static inline void eqcr_commit_checks(struct qm_eqcr *eqcr) { DPAA_ASSERT(eqcr->busy); - DPAA_ASSERT(eqcr->cursor->orp == (eqcr->cursor->orp & 0x00ffffff)); - DPAA_ASSERT(eqcr->cursor->fqid == (eqcr->cursor->fqid & 0x00ffffff)); + DPAA_ASSERT(!(be32_to_cpu(eqcr->cursor->fqid) & ~QM_FQID_MASK)); DPAA_ASSERT(eqcr->available >= 1); } @@ -962,8 +939,6 @@ struct qman_portal { u32 sdqcr; /* probing time config params for cpu-affine portals */ const struct qm_portal_config *config; - /* needed for providing a non-NULL device to dma_map_***() */ - struct platform_device *pdev; /* 2-element array. cgrs[0] is mask, cgrs[1] is snapshot. */ struct qman_cgrs *cgrs; /* linked-list of CSCN handlers. */ @@ -1133,7 +1108,6 @@ static int qman_create_portal(struct qman_portal *portal, const struct qman_cgrs *cgrs) { struct qm_portal *p; - char buf[16]; int ret; u32 isdr; @@ -1196,15 +1170,6 @@ static int qman_create_portal(struct qman_portal *portal, portal->sdqcr = QM_SDQCR_SOURCE_CHANNELS | QM_SDQCR_COUNT_UPTO3 | QM_SDQCR_DEDICATED_PRECEDENCE | QM_SDQCR_TYPE_PRIO_QOS | QM_SDQCR_TOKEN_SET(0xab) | QM_SDQCR_CHANNELS_DEDICATED; - sprintf(buf, "qportal-%d", c->channel); - portal->pdev = platform_device_alloc(buf, -1); - if (!portal->pdev) - goto fail_devalloc; - if (dma_set_mask(&portal->pdev->dev, DMA_BIT_MASK(40))) - goto fail_devadd; - ret = platform_device_add(portal->pdev); - if (ret) - goto fail_devadd; isdr = 0xffffffff; qm_out(p, QM_REG_ISDR, isdr); portal->irq_sources = 0; @@ -1239,8 +1204,8 @@ static int qman_create_portal(struct qman_portal *portal, /* special handling, drain just in case it's a few FQRNIs */ const union qm_mr_entry *e = qm_mr_current(p); - dev_err(c->dev, "MR dirty, VB 0x%x, rc 0x%x\n, addr 0x%x", - e->verb, e->ern.rc, e->ern.fd.addr_lo); + dev_err(c->dev, "MR dirty, VB 0x%x, rc 0x%x, addr 0x%llx\n", + e->verb, e->ern.rc, qm_fd_addr_get64(&e->ern.fd)); goto fail_dqrr_mr_empty; } /* Success */ @@ -1256,10 +1221,6 @@ fail_eqcr_empty: fail_affinity: free_irq(c->irq, portal); fail_irq: - platform_device_del(portal->pdev); -fail_devadd: - platform_device_put(portal->pdev); -fail_devalloc: kfree(portal->cgrs); fail_cgrs: qm_mc_finish(p); @@ -1321,9 +1282,6 @@ static void qman_destroy_portal(struct qman_portal *qm) qm_dqrr_finish(&qm->p); qm_eqcr_finish(&qm->p); - platform_device_del(qm->pdev); - platform_device_put(qm->pdev); - qm->config = NULL; } @@ -1428,7 +1386,7 @@ static void qm_mr_process_task(struct work_struct *work) case QM_MR_VERB_FQRN: case QM_MR_VERB_FQRL: /* Lookup in the retirement table */ - fq = fqid_to_fq(msg->fq.fqid); + fq = fqid_to_fq(qm_fqid_get(&msg->fq)); if (WARN_ON(!fq)) break; fq_state_change(p, fq, msg, verb); @@ -1437,7 +1395,7 @@ static void qm_mr_process_task(struct work_struct *work) break; case QM_MR_VERB_FQPN: /* Parked */ - fq = tag_to_fq(msg->fq.contextB); + fq = tag_to_fq(be32_to_cpu(msg->fq.context_b)); fq_state_change(p, fq, msg, verb); if (fq->cb.fqs) fq->cb.fqs(p, fq, msg); @@ -1451,7 +1409,7 @@ static void qm_mr_process_task(struct work_struct *work) } } else { /* Its a software ERN */ - fq = tag_to_fq(msg->ern.tag); + fq = tag_to_fq(be32_to_cpu(msg->ern.tag)); fq->cb.ern(p, fq, msg); } num++; @@ -1536,7 +1494,7 @@ static inline unsigned int __poll_portal_fast(struct qman_portal *p, if (dq->stat & QM_DQRR_STAT_UNSCHEDULED) { /* - * VDQCR: don't trust contextB as the FQ may have + * VDQCR: don't trust context_b as the FQ may have * been configured for h/w consumption and we're * draining it post-retirement. */ @@ -1562,8 +1520,8 @@ static inline unsigned int __poll_portal_fast(struct qman_portal *p, if (dq->stat & QM_DQRR_STAT_DQCR_EXPIRED) clear_vdqcr(p, fq); } else { - /* SDQCR: contextB points to the FQ */ - fq = tag_to_fq(dq->contextB); + /* SDQCR: context_b points to the FQ */ + fq = tag_to_fq(be32_to_cpu(dq->context_b)); /* Now let the callback do its stuff */ res = fq->cb.dqrr(p, fq, dq); /* @@ -1780,9 +1738,9 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts) if (fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)) return -EINVAL; #endif - if (opts && (opts->we_mask & QM_INITFQ_WE_OAC)) { + if (opts && (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_OAC)) { /* And can't be set at the same time as TDTHRESH */ - if (opts->we_mask & QM_INITFQ_WE_TDTHRESH) + if (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_TDTHRESH) return -EINVAL; } /* Issue an INITFQ_[PARKED|SCHED] management command */ @@ -1796,37 +1754,49 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts) mcc = qm_mc_start(&p->p); if (opts) mcc->initfq = *opts; - mcc->initfq.fqid = fq->fqid; + qm_fqid_set(&mcc->fq, fq->fqid); mcc->initfq.count = 0; /* - * If the FQ does *not* have the TO_DCPORTAL flag, contextB is set as a + * If the FQ does *not* have the TO_DCPORTAL flag, context_b is set as a * demux pointer. Otherwise, the caller-provided value is allowed to * stand, don't overwrite it. */ if (fq_isclear(fq, QMAN_FQ_FLAG_TO_DCPORTAL)) { dma_addr_t phys_fq; - mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTB; - mcc->initfq.fqd.context_b = fq_to_tag(fq); + mcc->initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CONTEXTB); + mcc->initfq.fqd.context_b = cpu_to_be32(fq_to_tag(fq)); /* * and the physical address - NB, if the user wasn't trying to * set CONTEXTA, clear the stashing settings. */ - if (!(mcc->initfq.we_mask & QM_INITFQ_WE_CONTEXTA)) { - mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTA; + if (!(be16_to_cpu(mcc->initfq.we_mask) & + QM_INITFQ_WE_CONTEXTA)) { + mcc->initfq.we_mask |= + cpu_to_be16(QM_INITFQ_WE_CONTEXTA); memset(&mcc->initfq.fqd.context_a, 0, sizeof(mcc->initfq.fqd.context_a)); } else { - phys_fq = dma_map_single(&p->pdev->dev, fq, sizeof(*fq), - DMA_TO_DEVICE); + struct qman_portal *p = qman_dma_portal; + + phys_fq = dma_map_single(p->config->dev, fq, + sizeof(*fq), DMA_TO_DEVICE); + if (dma_mapping_error(p->config->dev, phys_fq)) { + dev_err(p->config->dev, "dma_mapping failed\n"); + ret = -EIO; + goto out; + } + qm_fqd_stashing_set64(&mcc->initfq.fqd, phys_fq); } } if (flags & QMAN_INITFQ_FLAG_LOCAL) { int wq = 0; - if (!(mcc->initfq.we_mask & QM_INITFQ_WE_DESTWQ)) { - mcc->initfq.we_mask |= QM_INITFQ_WE_DESTWQ; + if (!(be16_to_cpu(mcc->initfq.we_mask) & + QM_INITFQ_WE_DESTWQ)) { + mcc->initfq.we_mask |= + cpu_to_be16(QM_INITFQ_WE_DESTWQ); wq = 4; } qm_fqd_set_destwq(&mcc->initfq.fqd, p->config->channel, wq); @@ -1845,13 +1815,13 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts) goto out; } if (opts) { - if (opts->we_mask & QM_INITFQ_WE_FQCTRL) { - if (opts->fqd.fq_ctrl & QM_FQCTRL_CGE) + if (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_FQCTRL) { + if (be16_to_cpu(opts->fqd.fq_ctrl) & QM_FQCTRL_CGE) fq_set(fq, QMAN_FQ_STATE_CGR_EN); else fq_clear(fq, QMAN_FQ_STATE_CGR_EN); } - if (opts->we_mask & QM_INITFQ_WE_CGID) + if (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_CGID) fq->cgr_groupid = opts->fqd.cgid; } fq->state = (flags & QMAN_INITFQ_FLAG_SCHED) ? @@ -1884,7 +1854,7 @@ int qman_schedule_fq(struct qman_fq *fq) goto out; } mcc = qm_mc_start(&p->p); - mcc->alterfq.fqid = fq->fqid; + qm_fqid_set(&mcc->fq, fq->fqid); qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_SCHED); if (!qm_mc_result_timeout(&p->p, &mcr)) { dev_err(p->config->dev, "ALTER_SCHED timeout\n"); @@ -1927,7 +1897,7 @@ int qman_retire_fq(struct qman_fq *fq, u32 *flags) goto out; } mcc = qm_mc_start(&p->p); - mcc->alterfq.fqid = fq->fqid; + qm_fqid_set(&mcc->fq, fq->fqid); qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_RETIRE); if (!qm_mc_result_timeout(&p->p, &mcr)) { dev_crit(p->config->dev, "ALTER_RETIRE timeout\n"); @@ -1970,8 +1940,8 @@ int qman_retire_fq(struct qman_fq *fq, u32 *flags) msg.verb = QM_MR_VERB_FQRNI; msg.fq.fqs = mcr->alterfq.fqs; - msg.fq.fqid = fq->fqid; - msg.fq.contextB = fq_to_tag(fq); + qm_fqid_set(&msg.fq, fq->fqid); + msg.fq.context_b = cpu_to_be32(fq_to_tag(fq)); fq->cb.fqs(p, fq, &msg); } } else if (res == QM_MCR_RESULT_PENDING) { @@ -2006,7 +1976,7 @@ int qman_oos_fq(struct qman_fq *fq) goto out; } mcc = qm_mc_start(&p->p); - mcc->alterfq.fqid = fq->fqid; + qm_fqid_set(&mcc->fq, fq->fqid); qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_OOS); if (!qm_mc_result_timeout(&p->p, &mcr)) { ret = -ETIMEDOUT; @@ -2032,7 +2002,7 @@ int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd) int ret = 0; mcc = qm_mc_start(&p->p); - mcc->queryfq.fqid = fq->fqid; + qm_fqid_set(&mcc->fq, fq->fqid); qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ); if (!qm_mc_result_timeout(&p->p, &mcr)) { ret = -ETIMEDOUT; @@ -2058,7 +2028,7 @@ static int qman_query_fq_np(struct qman_fq *fq, int ret = 0; mcc = qm_mc_start(&p->p); - mcc->queryfq.fqid = fq->fqid; + qm_fqid_set(&mcc->fq, fq->fqid); qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP); if (!qm_mc_result_timeout(&p->p, &mcr)) { ret = -ETIMEDOUT; @@ -2086,7 +2056,7 @@ static int qman_query_cgr(struct qman_cgr *cgr, int ret = 0; mcc = qm_mc_start(&p->p); - mcc->querycgr.cgid = cgr->cgrid; + mcc->cgr.cgid = cgr->cgrid; qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCGR); if (!qm_mc_result_timeout(&p->p, &mcr)) { ret = -ETIMEDOUT; @@ -2239,8 +2209,8 @@ int qman_enqueue(struct qman_fq *fq, const struct qm_fd *fd) if (unlikely(!eq)) goto out; - eq->fqid = fq->fqid; - eq->tag = fq_to_tag(fq); + qm_fqid_set(eq, fq->fqid); + eq->tag = cpu_to_be32(fq_to_tag(fq)); eq->fd = *fd; qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE); @@ -2282,7 +2252,24 @@ out: } #define PORTAL_IDX(n) (n->config->channel - QM_CHANNEL_SWPORTAL0) -#define TARG_MASK(n) (BIT(31) >> PORTAL_IDX(n)) + +/* congestion state change notification target update control */ +static void qm_cgr_cscn_targ_set(struct __qm_mc_cgr *cgr, int pi, u32 val) +{ + if (qman_ip_rev >= QMAN_REV30) + cgr->cscn_targ_upd_ctrl = cpu_to_be16(pi | + QM_CGR_TARG_UDP_CTRL_WRITE_BIT); + else + cgr->cscn_targ = cpu_to_be32(val | QM_CGR_TARG_PORTAL(pi)); +} + +static void qm_cgr_cscn_targ_clear(struct __qm_mc_cgr *cgr, int pi, u32 val) +{ + if (qman_ip_rev >= QMAN_REV30) + cgr->cscn_targ_upd_ctrl = cpu_to_be16(pi); + else + cgr->cscn_targ = cpu_to_be32(val & ~QM_CGR_TARG_PORTAL(pi)); +} static u8 qman_cgr_cpus[CGR_NUM]; @@ -2305,7 +2292,6 @@ int qman_create_cgr(struct qman_cgr *cgr, u32 flags, struct qm_mcc_initcgr *opts) { struct qm_mcr_querycgr cgr_state; - struct qm_mcc_initcgr local_opts = {}; int ret; struct qman_portal *p; @@ -2327,22 +2313,18 @@ int qman_create_cgr(struct qman_cgr *cgr, u32 flags, spin_lock(&p->cgr_lock); if (opts) { + struct qm_mcc_initcgr local_opts = *opts; + ret = qman_query_cgr(cgr, &cgr_state); if (ret) goto out; - if (opts) - local_opts = *opts; - if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) - local_opts.cgr.cscn_targ_upd_ctrl = - QM_CGR_TARG_UDP_CTRL_WRITE_BIT | PORTAL_IDX(p); - else - /* Overwrite TARG */ - local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ | - TARG_MASK(p); - local_opts.we_mask |= QM_CGR_WE_CSCN_TARG; + + qm_cgr_cscn_targ_set(&local_opts.cgr, PORTAL_IDX(p), + be32_to_cpu(cgr_state.cgr.cscn_targ)); + local_opts.we_mask |= cpu_to_be16(QM_CGR_WE_CSCN_TARG); /* send init if flags indicate so */ - if (opts && (flags & QMAN_CGR_FLAG_USE_INIT)) + if (flags & QMAN_CGR_FLAG_USE_INIT) ret = qm_modify_cgr(cgr, QMAN_CGR_FLAG_USE_INIT, &local_opts); else @@ -2405,13 +2387,11 @@ int qman_delete_cgr(struct qman_cgr *cgr) list_add(&cgr->node, &p->cgr_cbs); goto release_lock; } - /* Overwrite TARG */ - local_opts.we_mask = QM_CGR_WE_CSCN_TARG; - if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) - local_opts.cgr.cscn_targ_upd_ctrl = PORTAL_IDX(p); - else - local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ & - ~(TARG_MASK(p)); + + local_opts.we_mask = cpu_to_be16(QM_CGR_WE_CSCN_TARG); + qm_cgr_cscn_targ_clear(&local_opts.cgr, PORTAL_IDX(p), + be32_to_cpu(cgr_state.cgr.cscn_targ)); + ret = qm_modify_cgr(cgr, 0, &local_opts); if (ret) /* add back to the list */ @@ -2501,7 +2481,7 @@ static int _qm_dqrr_consume_and_match(struct qm_portal *p, u32 fqid, int s, } while (wait && !dqrr); while (dqrr) { - if (dqrr->fqid == fqid && (dqrr->stat & s)) + if (qm_fqid_get(dqrr) == fqid && (dqrr->stat & s)) found = 1; qm_dqrr_cdc_consume_1ptr(p, dqrr, 0); qm_dqrr_pvb_update(p); @@ -2537,7 +2517,7 @@ static int qman_shutdown_fq(u32 fqid) dev = p->config->dev; /* Determine the state of the FQID */ mcc = qm_mc_start(&p->p); - mcc->queryfq_np.fqid = fqid; + qm_fqid_set(&mcc->fq, fqid); qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP); if (!qm_mc_result_timeout(&p->p, &mcr)) { dev_err(dev, "QUERYFQ_NP timeout\n"); @@ -2552,7 +2532,7 @@ static int qman_shutdown_fq(u32 fqid) /* Query which channel the FQ is using */ mcc = qm_mc_start(&p->p); - mcc->queryfq.fqid = fqid; + qm_fqid_set(&mcc->fq, fqid); qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ); if (!qm_mc_result_timeout(&p->p, &mcr)) { dev_err(dev, "QUERYFQ timeout\n"); @@ -2572,7 +2552,7 @@ static int qman_shutdown_fq(u32 fqid) case QM_MCR_NP_STATE_PARKED: orl_empty = 0; mcc = qm_mc_start(&p->p); - mcc->alterfq.fqid = fqid; + qm_fqid_set(&mcc->fq, fqid); qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_RETIRE); if (!qm_mc_result_timeout(&p->p, &mcr)) { dev_err(dev, "QUERYFQ_NP timeout\n"); @@ -2667,7 +2647,7 @@ static int qman_shutdown_fq(u32 fqid) cpu_relax(); } mcc = qm_mc_start(&p->p); - mcc->alterfq.fqid = fqid; + qm_fqid_set(&mcc->fq, fqid); qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_OOS); if (!qm_mc_result_timeout(&p->p, &mcr)) { ret = -ETIMEDOUT; @@ -2687,7 +2667,7 @@ static int qman_shutdown_fq(u32 fqid) case QM_MCR_NP_STATE_RETIRED: /* Send OOS Command */ mcc = qm_mc_start(&p->p); - mcc->alterfq.fqid = fqid; + qm_fqid_set(&mcc->fq, fqid); qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_OOS); if (!qm_mc_result_timeout(&p->p, &mcr)) { ret = -ETIMEDOUT; @@ -2722,6 +2702,7 @@ const struct qm_portal_config *qman_get_qm_portal_config( { return portal->config; } +EXPORT_SYMBOL(qman_get_qm_portal_config); struct gen_pool *qm_fqalloc; /* FQID allocator */ struct gen_pool *qm_qpalloc; /* pool-channel allocator */ @@ -2789,15 +2770,18 @@ static int qpool_cleanup(u32 qp) struct qm_mcr_queryfq_np np; err = qman_query_fq_np(&fq, &np); - if (err) + if (err == -ERANGE) /* FQID range exceeded, found no problems */ return 0; + else if (WARN_ON(err)) + return err; + if ((np.state & QM_MCR_NP_STATE_MASK) != QM_MCR_NP_STATE_OOS) { struct qm_fqd fqd; err = qman_query_fq(&fq, &fqd); if (WARN_ON(err)) - return 0; + return err; if (qm_fqd_get_chan(&fqd) == qp) { /* The channel is the FQ's target, clean it */ err = qman_shutdown_fq(fq.fqid); @@ -2836,7 +2820,7 @@ static int cgr_cleanup(u32 cgrid) * error, looking for non-OOS FQDs whose CGR is the CGR being released */ struct qman_fq fq = { - .fqid = 1 + .fqid = QM_FQID_RANGE_START }; int err; @@ -2844,16 +2828,19 @@ static int cgr_cleanup(u32 cgrid) struct qm_mcr_queryfq_np np; err = qman_query_fq_np(&fq, &np); - if (err) + if (err == -ERANGE) /* FQID range exceeded, found no problems */ return 0; + else if (WARN_ON(err)) + return err; + if ((np.state & QM_MCR_NP_STATE_MASK) != QM_MCR_NP_STATE_OOS) { struct qm_fqd fqd; err = qman_query_fq(&fq, &fqd); if (WARN_ON(err)) - return 0; - if ((fqd.fq_ctrl & QM_FQCTRL_CGE) && + return err; + if (be16_to_cpu(fqd.fq_ctrl) & QM_FQCTRL_CGE && fqd.cgid == cgrid) { pr_err("CRGID 0x%x is being used by FQID 0x%x, CGR will be leaked\n", cgrid, fq.fqid); diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c index 0cace9e..f4e6e70 100644 --- a/drivers/soc/fsl/qbman/qman_ccsr.c +++ b/drivers/soc/fsl/qbman/qman_ccsr.c @@ -444,6 +444,9 @@ static int zero_priv_mem(struct device *dev, struct device_node *node, /* map as cacheable, non-guarded */ void __iomem *tmpp = ioremap_prot(addr, sz, 0); + if (!tmpp) + return -ENOMEM; + memset_io(tmpp, 0, sz); flush_dcache_range((unsigned long)tmpp, (unsigned long)tmpp + sz); diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index d068e48..adbaa30 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -30,6 +30,9 @@ #include "qman_priv.h" +struct qman_portal *qman_dma_portal; +EXPORT_SYMBOL(qman_dma_portal); + /* Enable portal interupts (as opposed to polling mode) */ #define CONFIG_FSL_DPA_PIRQ_SLOW 1 #define CONFIG_FSL_DPA_PIRQ_FAST 1 @@ -150,6 +153,10 @@ static struct qman_portal *init_pcfg(struct qm_portal_config *pcfg) /* all assigned portals are initialized now */ qman_init_cgr_all(); } + + if (!qman_dma_portal) + qman_dma_portal = p; + spin_unlock(&qman_lock); dev_info(pcfg->dev, "Portal initialised, cpu %d\n", pcfg->cpu); @@ -217,9 +224,9 @@ static int qman_portal_probe(struct platform_device *pdev) struct device_node *node = dev->of_node; struct qm_portal_config *pcfg; struct resource *addr_phys[2]; - const u32 *channel; void __iomem *va; - int irq, len, cpu; + int irq, cpu, err; + u32 val; pcfg = devm_kmalloc(dev, sizeof(*pcfg), GFP_KERNEL); if (!pcfg) @@ -243,13 +250,13 @@ static int qman_portal_probe(struct platform_device *pdev) return -ENXIO; } - channel = of_get_property(node, "cell-index", &len); - if (!channel || (len != 4)) { + err = of_property_read_u32(node, "cell-index", &val); + if (err) { dev_err(dev, "Can't get %s property 'cell-index'\n", node->full_name); - return -ENXIO; + return err; } - pcfg->channel = *channel; + pcfg->channel = val; pcfg->cpu = -1; irq = platform_get_irq(pdev, 0); if (irq <= 0) { @@ -259,15 +266,19 @@ static int qman_portal_probe(struct platform_device *pdev) pcfg->irq = irq; va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0); - if (!va) + if (!va) { + dev_err(dev, "ioremap::CE failed\n"); goto err_ioremap1; + } pcfg->addr_virt[DPAA_PORTAL_CE] = va; va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]), _PAGE_GUARDED | _PAGE_NO_CACHE); - if (!va) + if (!va) { + dev_err(dev, "ioremap::CI failed\n"); goto err_ioremap2; + } pcfg->addr_virt[DPAA_PORTAL_CI] = va; @@ -285,8 +296,15 @@ static int qman_portal_probe(struct platform_device *pdev) spin_unlock(&qman_lock); pcfg->cpu = cpu; - if (!init_pcfg(pcfg)) - goto err_ioremap2; + if (dma_set_mask(dev, DMA_BIT_MASK(40))) { + dev_err(dev, "dma_set_mask() failed\n"); + goto err_portal_init; + } + + if (!init_pcfg(pcfg)) { + dev_err(dev, "portal init failed\n"); + goto err_portal_init; + } /* clear irq affinity if assigned cpu is offline */ if (!cpu_online(cpu)) @@ -294,10 +312,11 @@ static int qman_portal_probe(struct platform_device *pdev) return 0; +err_portal_init: + iounmap(pcfg->addr_virt[DPAA_PORTAL_CI]); err_ioremap2: iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]); err_ioremap1: - dev_err(dev, "ioremap failed\n"); return -ENXIO; } diff --git a/drivers/soc/fsl/qbman/qman_priv.h b/drivers/soc/fsl/qbman/qman_priv.h index 5cf821e..53685b5 100644 --- a/drivers/soc/fsl/qbman/qman_priv.h +++ b/drivers/soc/fsl/qbman/qman_priv.h @@ -73,29 +73,23 @@ struct qm_mcr_querycgr { struct __qm_mc_cgr cgr; /* CGR fields */ u8 __reserved2[6]; u8 i_bcnt_hi; /* high 8-bits of 40-bit "Instant" */ - u32 i_bcnt_lo; /* low 32-bits of 40-bit */ + __be32 i_bcnt_lo; /* low 32-bits of 40-bit */ u8 __reserved3[3]; u8 a_bcnt_hi; /* high 8-bits of 40-bit "Average" */ - u32 a_bcnt_lo; /* low 32-bits of 40-bit */ - u32 cscn_targ_swp[4]; + __be32 a_bcnt_lo; /* low 32-bits of 40-bit */ + __be32 cscn_targ_swp[4]; } __packed; static inline u64 qm_mcr_querycgr_i_get64(const struct qm_mcr_querycgr *q) { - return ((u64)q->i_bcnt_hi << 32) | (u64)q->i_bcnt_lo; + return ((u64)q->i_bcnt_hi << 32) | be32_to_cpu(q->i_bcnt_lo); } static inline u64 qm_mcr_querycgr_a_get64(const struct qm_mcr_querycgr *q) { - return ((u64)q->a_bcnt_hi << 32) | (u64)q->a_bcnt_lo; + return ((u64)q->a_bcnt_hi << 32) | be32_to_cpu(q->a_bcnt_lo); } /* "Query FQ Non-Programmable Fields" */ -struct qm_mcc_queryfq_np { - u8 _ncw_verb; - u8 __reserved1[3]; - u32 fqid; /* 24-bit */ - u8 __reserved2[56]; -} __packed; struct qm_mcr_queryfq_np { u8 verb; @@ -367,5 +361,6 @@ int qman_alloc_fq_table(u32 num_fqids); #define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI) extern struct qman_portal *affine_portals[NR_CPUS]; +extern struct qman_portal *qman_dma_portal; const struct qm_portal_config *qman_get_qm_portal_config( struct qman_portal *portal); diff --git a/drivers/soc/fsl/qbman/qman_test_api.c b/drivers/soc/fsl/qbman/qman_test_api.c index 6880ff1..2895d06 100644 --- a/drivers/soc/fsl/qbman/qman_test_api.c +++ b/drivers/soc/fsl/qbman/qman_test_api.c @@ -65,7 +65,7 @@ static void fd_init(struct qm_fd *fd) { qm_fd_addr_set64(fd, 0xabdeadbeefLLU); qm_fd_set_contig_big(fd, 0x0000ffff); - fd->cmd = 0xfeedf00d; + fd->cmd = cpu_to_be32(0xfeedf00d); } static void fd_inc(struct qm_fd *fd) @@ -86,26 +86,19 @@ static void fd_inc(struct qm_fd *fd) len--; qm_fd_set_param(fd, fmt, off, len); - fd->cmd++; + fd->cmd = cpu_to_be32(be32_to_cpu(fd->cmd) + 1); } /* The only part of the 'fd' we can't memcmp() is the ppid */ -static int fd_cmp(const struct qm_fd *a, const struct qm_fd *b) +static bool fd_neq(const struct qm_fd *a, const struct qm_fd *b) { - int r = (qm_fd_addr_get64(a) == qm_fd_addr_get64(b)) ? 0 : -1; + bool neq = qm_fd_addr_get64(a) != qm_fd_addr_get64(b); - if (!r) { - enum qm_fd_format fmt_a, fmt_b; + neq |= qm_fd_get_format(a) != qm_fd_get_format(b); + neq |= a->cfg != b->cfg; + neq |= a->cmd != b->cmd; - fmt_a = qm_fd_get_format(a); - fmt_b = qm_fd_get_format(b); - r = fmt_a - fmt_b; - } - if (!r) - r = a->cfg - b->cfg; - if (!r) - r = a->cmd - b->cmd; - return r; + return neq; } /* test */ @@ -217,12 +210,12 @@ static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p, struct qman_fq *fq, const struct qm_dqrr_entry *dq) { - if (WARN_ON(fd_cmp(&fd_dq, &dq->fd))) { + if (WARN_ON(fd_neq(&fd_dq, &dq->fd))) { pr_err("BADNESS: dequeued frame doesn't match;\n"); return qman_cb_dqrr_consume; } fd_inc(&fd_dq); - if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_cmp(&fd_dq, &fd)) { + if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_neq(&fd_dq, &fd)) { sdqcr_complete = 1; wake_up(&waitqueue); } diff --git a/drivers/soc/fsl/qbman/qman_test_stash.c b/drivers/soc/fsl/qbman/qman_test_stash.c index 43cf66b..e87b654 100644 --- a/drivers/soc/fsl/qbman/qman_test_stash.c +++ b/drivers/soc/fsl/qbman/qman_test_stash.c @@ -175,7 +175,7 @@ static DEFINE_PER_CPU(struct hp_cpu, hp_cpus); /* links together the hp_cpu structs, in first-come first-serve order. */ static LIST_HEAD(hp_cpu_list); -static spinlock_t hp_lock = __SPIN_LOCK_UNLOCKED(hp_lock); +static DEFINE_SPINLOCK(hp_lock); static unsigned int hp_cpu_list_length; @@ -191,6 +191,9 @@ static void *__frame_ptr; static u32 *frame_ptr; static dma_addr_t frame_dma; +/* needed for dma_map*() */ +static const struct qm_portal_config *pcfg; + /* the main function waits on this */ static DECLARE_WAIT_QUEUE_HEAD(queue); @@ -210,16 +213,14 @@ static int allocate_frame_data(void) { u32 lfsr = HP_FIRST_WORD; int loop; - struct platform_device *pdev = platform_device_alloc("foobar", -1); - if (!pdev) { - pr_crit("platform_device_alloc() failed"); - return -EIO; - } - if (platform_device_add(pdev)) { - pr_crit("platform_device_add() failed"); + if (!qman_dma_portal) { + pr_crit("portal not available\n"); return -EIO; } + + pcfg = qman_get_qm_portal_config(qman_dma_portal); + __frame_ptr = kmalloc(4 * HP_NUM_WORDS, GFP_KERNEL); if (!__frame_ptr) return -ENOMEM; @@ -229,15 +230,22 @@ static int allocate_frame_data(void) frame_ptr[loop] = lfsr; lfsr = do_lfsr(lfsr); } - frame_dma = dma_map_single(&pdev->dev, frame_ptr, 4 * HP_NUM_WORDS, + + frame_dma = dma_map_single(pcfg->dev, frame_ptr, 4 * HP_NUM_WORDS, DMA_BIDIRECTIONAL); - platform_device_del(pdev); - platform_device_put(pdev); + if (dma_mapping_error(pcfg->dev, frame_dma)) { + pr_crit("dma mapping failure\n"); + kfree(__frame_ptr); + return -EIO; + } + return 0; } static void deallocate_frame_data(void) { + dma_unmap_single(pcfg->dev, frame_dma, 4 * HP_NUM_WORDS, + DMA_BIDIRECTIONAL); kfree(__frame_ptr); } @@ -249,7 +257,8 @@ static inline int process_frame_data(struct hp_handler *handler, int loop; if (qm_fd_addr_get64(fd) != handler->addr) { - pr_crit("bad frame address"); + pr_crit("bad frame address, [%llX != %llX]\n", + qm_fd_addr_get64(fd), handler->addr); return -EIO; } for (loop = 0; loop < HP_NUM_WORDS; loop++, p++) { @@ -397,8 +406,9 @@ static int init_handler(void *h) goto failed; } memset(&opts, 0, sizeof(opts)); - opts.we_mask = QM_INITFQ_WE_FQCTRL | QM_INITFQ_WE_CONTEXTA; - opts.fqd.fq_ctrl = QM_FQCTRL_CTXASTASHING; + opts.we_mask = cpu_to_be16(QM_INITFQ_WE_FQCTRL | + QM_INITFQ_WE_CONTEXTA); + opts.fqd.fq_ctrl = cpu_to_be16(QM_FQCTRL_CTXASTASHING); qm_fqd_set_stashing(&opts.fqd, 0, STASH_DATA_CL, STASH_CTX_CL); err = qman_init_fq(&handler->rx, QMAN_INITFQ_FLAG_SCHED | QMAN_INITFQ_FLAG_LOCAL, &opts); diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index 2707a82..ade168f 100644 --- a/drivers/soc/fsl/qe/qe.c +++ b/drivers/soc/fsl/qe/qe.c @@ -717,9 +717,5 @@ static struct platform_driver qe_driver = { .resume = qe_resume, }; -static int __init qe_drv_init(void) -{ - return platform_driver_register(&qe_driver); -} -device_initcall(qe_drv_init); +builtin_platform_driver(qe_driver); #endif /* defined(CONFIG_SUSPEND) && defined(CONFIG_PPC_85xx) */ diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index 80378dd..c882357 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -31,49 +31,49 @@ static void tce_iommu_detach_group(void *iommu_data, struct iommu_group *iommu_group); -static long try_increment_locked_vm(long npages) +static long try_increment_locked_vm(struct mm_struct *mm, long npages) { long ret = 0, locked, lock_limit; - if (!current || !current->mm) - return -ESRCH; /* process exited */ + if (WARN_ON_ONCE(!mm)) + return -EPERM; if (!npages) return 0; - down_write(¤t->mm->mmap_sem); - locked = current->mm->locked_vm + npages; + down_write(&mm->mmap_sem); + locked = mm->locked_vm + npages; lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT; if (locked > lock_limit && !capable(CAP_IPC_LOCK)) ret = -ENOMEM; else - current->mm->locked_vm += npages; + mm->locked_vm += npages; pr_debug("[%d] RLIMIT_MEMLOCK +%ld %ld/%ld%s\n", current->pid, npages << PAGE_SHIFT, - current->mm->locked_vm << PAGE_SHIFT, + mm->locked_vm << PAGE_SHIFT, rlimit(RLIMIT_MEMLOCK), ret ? " - exceeded" : ""); - up_write(¤t->mm->mmap_sem); + up_write(&mm->mmap_sem); return ret; } -static void decrement_locked_vm(long npages) +static void decrement_locked_vm(struct mm_struct *mm, long npages) { - if (!current || !current->mm || !npages) - return; /* process exited */ + if (!mm || !npages) + return; - down_write(¤t->mm->mmap_sem); - if (WARN_ON_ONCE(npages > current->mm->locked_vm)) - npages = current->mm->locked_vm; - current->mm->locked_vm -= npages; + down_write(&mm->mmap_sem); + if (WARN_ON_ONCE(npages > mm->locked_vm)) + npages = mm->locked_vm; + mm->locked_vm -= npages; pr_debug("[%d] RLIMIT_MEMLOCK -%ld %ld/%ld\n", current->pid, npages << PAGE_SHIFT, - current->mm->locked_vm << PAGE_SHIFT, + mm->locked_vm << PAGE_SHIFT, rlimit(RLIMIT_MEMLOCK)); - up_write(¤t->mm->mmap_sem); + up_write(&mm->mmap_sem); } /* @@ -89,6 +89,15 @@ struct tce_iommu_group { }; /* + * A container needs to remember which preregistered region it has + * referenced to do proper cleanup at the userspace process exit. + */ +struct tce_iommu_prereg { + struct list_head next; + struct mm_iommu_table_group_mem_t *mem; +}; + +/* * The container descriptor supports only a single group per container. * Required by the API as the container is not supplied with the IOMMU group * at the moment of initialization. @@ -97,24 +106,68 @@ struct tce_container { struct mutex lock; bool enabled; bool v2; + bool def_window_pending; unsigned long locked_pages; + struct mm_struct *mm; struct iommu_table *tables[IOMMU_TABLE_GROUP_MAX_TABLES]; struct list_head group_list; + struct list_head prereg_list; }; +static long tce_iommu_mm_set(struct tce_container *container) +{ + if (container->mm) { + if (container->mm == current->mm) + return 0; + return -EPERM; + } + BUG_ON(!current->mm); + container->mm = current->mm; + atomic_inc(&container->mm->mm_count); + + return 0; +} + +static long tce_iommu_prereg_free(struct tce_container *container, + struct tce_iommu_prereg *tcemem) +{ + long ret; + + ret = mm_iommu_put(container->mm, tcemem->mem); + if (ret) + return ret; + + list_del(&tcemem->next); + kfree(tcemem); + + return 0; +} + static long tce_iommu_unregister_pages(struct tce_container *container, __u64 vaddr, __u64 size) { struct mm_iommu_table_group_mem_t *mem; + struct tce_iommu_prereg *tcemem; + bool found = false; if ((vaddr & ~PAGE_MASK) || (size & ~PAGE_MASK)) return -EINVAL; - mem = mm_iommu_find(vaddr, size >> PAGE_SHIFT); + mem = mm_iommu_find(container->mm, vaddr, size >> PAGE_SHIFT); if (!mem) return -ENOENT; - return mm_iommu_put(mem); + list_for_each_entry(tcemem, &container->prereg_list, next) { + if (tcemem->mem == mem) { + found = true; + break; + } + } + + if (!found) + return -ENOENT; + + return tce_iommu_prereg_free(container, tcemem); } static long tce_iommu_register_pages(struct tce_container *container, @@ -122,22 +175,36 @@ static long tce_iommu_register_pages(struct tce_container *container, { long ret = 0; struct mm_iommu_table_group_mem_t *mem = NULL; + struct tce_iommu_prereg *tcemem; unsigned long entries = size >> PAGE_SHIFT; if ((vaddr & ~PAGE_MASK) || (size & ~PAGE_MASK) || ((vaddr + size) < vaddr)) return -EINVAL; - ret = mm_iommu_get(vaddr, entries, &mem); + mem = mm_iommu_find(container->mm, vaddr, entries); + if (mem) { + list_for_each_entry(tcemem, &container->prereg_list, next) { + if (tcemem->mem == mem) + return -EBUSY; + } + } + + ret = mm_iommu_get(container->mm, vaddr, entries, &mem); if (ret) return ret; + tcemem = kzalloc(sizeof(*tcemem), GFP_KERNEL); + tcemem->mem = mem; + list_add(&tcemem->next, &container->prereg_list); + container->enabled = true; return 0; } -static long tce_iommu_userspace_view_alloc(struct iommu_table *tbl) +static long tce_iommu_userspace_view_alloc(struct iommu_table *tbl, + struct mm_struct *mm) { unsigned long cb = _ALIGN_UP(sizeof(tbl->it_userspace[0]) * tbl->it_size, PAGE_SIZE); @@ -146,13 +213,13 @@ static long tce_iommu_userspace_view_alloc(struct iommu_table *tbl) BUG_ON(tbl->it_userspace); - ret = try_increment_locked_vm(cb >> PAGE_SHIFT); + ret = try_increment_locked_vm(mm, cb >> PAGE_SHIFT); if (ret) return ret; uas = vzalloc(cb); if (!uas) { - decrement_locked_vm(cb >> PAGE_SHIFT); + decrement_locked_vm(mm, cb >> PAGE_SHIFT); return -ENOMEM; } tbl->it_userspace = uas; @@ -160,7 +227,8 @@ static long tce_iommu_userspace_view_alloc(struct iommu_table *tbl) return 0; } -static void tce_iommu_userspace_view_free(struct iommu_table *tbl) +static void tce_iommu_userspace_view_free(struct iommu_table *tbl, + struct mm_struct *mm) { unsigned long cb = _ALIGN_UP(sizeof(tbl->it_userspace[0]) * tbl->it_size, PAGE_SIZE); @@ -170,7 +238,7 @@ static void tce_iommu_userspace_view_free(struct iommu_table *tbl) vfree(tbl->it_userspace); tbl->it_userspace = NULL; - decrement_locked_vm(cb >> PAGE_SHIFT); + decrement_locked_vm(mm, cb >> PAGE_SHIFT); } static bool tce_page_is_contained(struct page *page, unsigned page_shift) @@ -230,9 +298,6 @@ static int tce_iommu_enable(struct tce_container *container) struct iommu_table_group *table_group; struct tce_iommu_group *tcegrp; - if (!current->mm) - return -ESRCH; /* process exited */ - if (container->enabled) return -EBUSY; @@ -277,8 +342,12 @@ static int tce_iommu_enable(struct tce_container *container) if (!table_group->tce32_size) return -EPERM; + ret = tce_iommu_mm_set(container); + if (ret) + return ret; + locked = table_group->tce32_size >> PAGE_SHIFT; - ret = try_increment_locked_vm(locked); + ret = try_increment_locked_vm(container->mm, locked); if (ret) return ret; @@ -296,10 +365,8 @@ static void tce_iommu_disable(struct tce_container *container) container->enabled = false; - if (!current->mm) - return; - - decrement_locked_vm(container->locked_pages); + BUG_ON(!container->mm); + decrement_locked_vm(container->mm, container->locked_pages); } static void *tce_iommu_open(unsigned long arg) @@ -317,6 +384,7 @@ static void *tce_iommu_open(unsigned long arg) mutex_init(&container->lock); INIT_LIST_HEAD_RCU(&container->group_list); + INIT_LIST_HEAD_RCU(&container->prereg_list); container->v2 = arg == VFIO_SPAPR_TCE_v2_IOMMU; @@ -326,7 +394,8 @@ static void *tce_iommu_open(unsigned long arg) static int tce_iommu_clear(struct tce_container *container, struct iommu_table *tbl, unsigned long entry, unsigned long pages); -static void tce_iommu_free_table(struct iommu_table *tbl); +static void tce_iommu_free_table(struct tce_container *container, + struct iommu_table *tbl); static void tce_iommu_release(void *iommu_data) { @@ -351,10 +420,20 @@ static void tce_iommu_release(void *iommu_data) continue; tce_iommu_clear(container, tbl, tbl->it_offset, tbl->it_size); - tce_iommu_free_table(tbl); + tce_iommu_free_table(container, tbl); + } + + while (!list_empty(&container->prereg_list)) { + struct tce_iommu_prereg *tcemem; + + tcemem = list_first_entry(&container->prereg_list, + struct tce_iommu_prereg, next); + WARN_ON_ONCE(tce_iommu_prereg_free(container, tcemem)); } tce_iommu_disable(container); + if (container->mm) + mmdrop(container->mm); mutex_destroy(&container->lock); kfree(container); @@ -369,13 +448,14 @@ static void tce_iommu_unuse_page(struct tce_container *container, put_page(page); } -static int tce_iommu_prereg_ua_to_hpa(unsigned long tce, unsigned long size, +static int tce_iommu_prereg_ua_to_hpa(struct tce_container *container, + unsigned long tce, unsigned long size, unsigned long *phpa, struct mm_iommu_table_group_mem_t **pmem) { long ret = 0; struct mm_iommu_table_group_mem_t *mem; - mem = mm_iommu_lookup(tce, size); + mem = mm_iommu_lookup(container->mm, tce, size); if (!mem) return -EINVAL; @@ -388,18 +468,18 @@ static int tce_iommu_prereg_ua_to_hpa(unsigned long tce, unsigned long size, return 0; } -static void tce_iommu_unuse_page_v2(struct iommu_table *tbl, - unsigned long entry) +static void tce_iommu_unuse_page_v2(struct tce_container *container, + struct iommu_table *tbl, unsigned long entry) { struct mm_iommu_table_group_mem_t *mem = NULL; int ret; unsigned long hpa = 0; unsigned long *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); - if (!pua || !current || !current->mm) + if (!pua) return; - ret = tce_iommu_prereg_ua_to_hpa(*pua, IOMMU_PAGE_SIZE(tbl), + ret = tce_iommu_prereg_ua_to_hpa(container, *pua, IOMMU_PAGE_SIZE(tbl), &hpa, &mem); if (ret) pr_debug("%s: tce %lx at #%lx was not cached, ret=%d\n", @@ -429,7 +509,7 @@ static int tce_iommu_clear(struct tce_container *container, continue; if (container->v2) { - tce_iommu_unuse_page_v2(tbl, entry); + tce_iommu_unuse_page_v2(container, tbl, entry); continue; } @@ -509,13 +589,19 @@ static long tce_iommu_build_v2(struct tce_container *container, unsigned long hpa; enum dma_data_direction dirtmp; + if (!tbl->it_userspace) { + ret = tce_iommu_userspace_view_alloc(tbl, container->mm); + if (ret) + return ret; + } + for (i = 0; i < pages; ++i) { struct mm_iommu_table_group_mem_t *mem = NULL; unsigned long *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry + i); - ret = tce_iommu_prereg_ua_to_hpa(tce, IOMMU_PAGE_SIZE(tbl), - &hpa, &mem); + ret = tce_iommu_prereg_ua_to_hpa(container, + tce, IOMMU_PAGE_SIZE(tbl), &hpa, &mem); if (ret) break; @@ -536,7 +622,7 @@ static long tce_iommu_build_v2(struct tce_container *container, ret = iommu_tce_xchg(tbl, entry + i, &hpa, &dirtmp); if (ret) { /* dirtmp cannot be DMA_NONE here */ - tce_iommu_unuse_page_v2(tbl, entry + i); + tce_iommu_unuse_page_v2(container, tbl, entry + i); pr_err("iommu_tce: %s failed ioba=%lx, tce=%lx, ret=%ld\n", __func__, entry << tbl->it_page_shift, tce, ret); @@ -544,7 +630,7 @@ static long tce_iommu_build_v2(struct tce_container *container, } if (dirtmp != DMA_NONE) - tce_iommu_unuse_page_v2(tbl, entry + i); + tce_iommu_unuse_page_v2(container, tbl, entry + i); *pua = tce; @@ -572,7 +658,7 @@ static long tce_iommu_create_table(struct tce_container *container, if (!table_size) return -EINVAL; - ret = try_increment_locked_vm(table_size >> PAGE_SHIFT); + ret = try_increment_locked_vm(container->mm, table_size >> PAGE_SHIFT); if (ret) return ret; @@ -582,25 +668,17 @@ static long tce_iommu_create_table(struct tce_container *container, WARN_ON(!ret && !(*ptbl)->it_ops->free); WARN_ON(!ret && ((*ptbl)->it_allocated_size != table_size)); - if (!ret && container->v2) { - ret = tce_iommu_userspace_view_alloc(*ptbl); - if (ret) - (*ptbl)->it_ops->free(*ptbl); - } - - if (ret) - decrement_locked_vm(table_size >> PAGE_SHIFT); - return ret; } -static void tce_iommu_free_table(struct iommu_table *tbl) +static void tce_iommu_free_table(struct tce_container *container, + struct iommu_table *tbl) { unsigned long pages = tbl->it_allocated_size >> PAGE_SHIFT; - tce_iommu_userspace_view_free(tbl); + tce_iommu_userspace_view_free(tbl, container->mm); tbl->it_ops->free(tbl); - decrement_locked_vm(pages); + decrement_locked_vm(container->mm, pages); } static long tce_iommu_create_window(struct tce_container *container, @@ -663,7 +741,7 @@ unset_exit: table_group = iommu_group_get_iommudata(tcegrp->grp); table_group->ops->unset_window(table_group, num); } - tce_iommu_free_table(tbl); + tce_iommu_free_table(container, tbl); return ret; } @@ -701,12 +779,41 @@ static long tce_iommu_remove_window(struct tce_container *container, /* Free table */ tce_iommu_clear(container, tbl, tbl->it_offset, tbl->it_size); - tce_iommu_free_table(tbl); + tce_iommu_free_table(container, tbl); container->tables[num] = NULL; return 0; } +static long tce_iommu_create_default_window(struct tce_container *container) +{ + long ret; + __u64 start_addr = 0; + struct tce_iommu_group *tcegrp; + struct iommu_table_group *table_group; + + if (!container->def_window_pending) + return 0; + + if (!tce_groups_attached(container)) + return -ENODEV; + + tcegrp = list_first_entry(&container->group_list, + struct tce_iommu_group, next); + table_group = iommu_group_get_iommudata(tcegrp->grp); + if (!table_group) + return -ENODEV; + + ret = tce_iommu_create_window(container, IOMMU_PAGE_SHIFT_4K, + table_group->tce32_size, 1, &start_addr); + WARN_ON_ONCE(!ret && start_addr); + + if (!ret) + container->def_window_pending = false; + + return ret; +} + static long tce_iommu_ioctl(void *iommu_data, unsigned int cmd, unsigned long arg) { @@ -727,7 +834,17 @@ static long tce_iommu_ioctl(void *iommu_data, } return (ret < 0) ? 0 : ret; + } + + /* + * Sanity check to prevent one userspace from manipulating + * another userspace mm. + */ + BUG_ON(!container); + if (container->mm && container->mm != current->mm) + return -EPERM; + switch (cmd) { case VFIO_IOMMU_SPAPR_TCE_GET_INFO: { struct vfio_iommu_spapr_tce_info info; struct tce_iommu_group *tcegrp; @@ -797,6 +914,10 @@ static long tce_iommu_ioctl(void *iommu_data, VFIO_DMA_MAP_FLAG_WRITE)) return -EINVAL; + ret = tce_iommu_create_default_window(container); + if (ret) + return ret; + num = tce_iommu_find_table(container, param.iova, &tbl); if (num < 0) return -ENXIO; @@ -860,6 +981,10 @@ static long tce_iommu_ioctl(void *iommu_data, if (param.flags) return -EINVAL; + ret = tce_iommu_create_default_window(container); + if (ret) + return ret; + num = tce_iommu_find_table(container, param.iova, &tbl); if (num < 0) return -ENXIO; @@ -888,6 +1013,10 @@ static long tce_iommu_ioctl(void *iommu_data, minsz = offsetofend(struct vfio_iommu_spapr_register_memory, size); + ret = tce_iommu_mm_set(container); + if (ret) + return ret; + if (copy_from_user(¶m, (void __user *)arg, minsz)) return -EFAULT; @@ -911,6 +1040,9 @@ static long tce_iommu_ioctl(void *iommu_data, if (!container->v2) break; + if (!container->mm) + return -EPERM; + minsz = offsetofend(struct vfio_iommu_spapr_register_memory, size); @@ -969,6 +1101,10 @@ static long tce_iommu_ioctl(void *iommu_data, if (!container->v2) break; + ret = tce_iommu_mm_set(container); + if (ret) + return ret; + if (!tce_groups_attached(container)) return -ENXIO; @@ -986,6 +1122,10 @@ static long tce_iommu_ioctl(void *iommu_data, mutex_lock(&container->lock); + ret = tce_iommu_create_default_window(container); + if (ret) + return ret; + ret = tce_iommu_create_window(container, create.page_shift, create.window_size, create.levels, &create.start_addr); @@ -1003,6 +1143,10 @@ static long tce_iommu_ioctl(void *iommu_data, if (!container->v2) break; + ret = tce_iommu_mm_set(container); + if (ret) + return ret; + if (!tce_groups_attached(container)) return -ENXIO; @@ -1018,6 +1162,11 @@ static long tce_iommu_ioctl(void *iommu_data, if (remove.flags) return -EINVAL; + if (container->def_window_pending && !remove.start_addr) { + container->def_window_pending = false; + return 0; + } + mutex_lock(&container->lock); ret = tce_iommu_remove_window(container, remove.start_addr); @@ -1043,7 +1192,7 @@ static void tce_iommu_release_ownership(struct tce_container *container, continue; tce_iommu_clear(container, tbl, tbl->it_offset, tbl->it_size); - tce_iommu_userspace_view_free(tbl); + tce_iommu_userspace_view_free(tbl, container->mm); if (tbl->it_map) iommu_release_ownership(tbl); @@ -1062,10 +1211,7 @@ static int tce_iommu_take_ownership(struct tce_container *container, if (!tbl || !tbl->it_map) continue; - rc = tce_iommu_userspace_view_alloc(tbl); - if (!rc) - rc = iommu_take_ownership(tbl); - + rc = iommu_take_ownership(tbl); if (rc) { for (j = 0; j < i; ++j) iommu_release_ownership( @@ -1100,9 +1246,6 @@ static void tce_iommu_release_ownership_ddw(struct tce_container *container, static long tce_iommu_take_ownership_ddw(struct tce_container *container, struct iommu_table_group *table_group) { - long i, ret = 0; - struct iommu_table *tbl = NULL; - if (!table_group->ops->create_table || !table_group->ops->set_window || !table_group->ops->release_ownership) { WARN_ON_ONCE(1); @@ -1111,47 +1254,7 @@ static long tce_iommu_take_ownership_ddw(struct tce_container *container, table_group->ops->take_ownership(table_group); - /* - * If it the first group attached, check if there is - * a default DMA window and create one if none as - * the userspace expects it to exist. - */ - if (!tce_groups_attached(container) && !container->tables[0]) { - ret = tce_iommu_create_table(container, - table_group, - 0, /* window number */ - IOMMU_PAGE_SHIFT_4K, - table_group->tce32_size, - 1, /* default levels */ - &tbl); - if (ret) - goto release_exit; - else - container->tables[0] = tbl; - } - - /* Set all windows to the new group */ - for (i = 0; i < IOMMU_TABLE_GROUP_MAX_TABLES; ++i) { - tbl = container->tables[i]; - - if (!tbl) - continue; - - /* Set the default window to a new group */ - ret = table_group->ops->set_window(table_group, i, tbl); - if (ret) - goto release_exit; - } - return 0; - -release_exit: - for (i = 0; i < IOMMU_TABLE_GROUP_MAX_TABLES; ++i) - table_group->ops->unset_window(table_group, i); - - table_group->ops->release_ownership(table_group); - - return ret; } static int tce_iommu_attach_group(void *iommu_data, @@ -1203,10 +1306,13 @@ static int tce_iommu_attach_group(void *iommu_data, } if (!table_group->ops || !table_group->ops->take_ownership || - !table_group->ops->release_ownership) + !table_group->ops->release_ownership) { ret = tce_iommu_take_ownership(container, table_group); - else + } else { ret = tce_iommu_take_ownership_ddw(container, table_group); + if (!tce_groups_attached(container) && !container->tables[0]) + container->def_window_pending = true; + } if (!ret) { tcegrp->grp = iommu_group; diff --git a/include/linux/kexec.h b/include/linux/kexec.h index d743777..d419d0e 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -148,7 +148,36 @@ struct kexec_file_ops { kexec_verify_sig_t *verify_sig; #endif }; -#endif + +/** + * struct kexec_buf - parameters for finding a place for a buffer in memory + * @image: kexec image in which memory to search. + * @buffer: Contents which will be copied to the allocated memory. + * @bufsz: Size of @buffer. + * @mem: On return will have address of the buffer in memory. + * @memsz: Size for the buffer in memory. + * @buf_align: Minimum alignment needed. + * @buf_min: The buffer can't be placed below this address. + * @buf_max: The buffer can't be placed above this address. + * @top_down: Allocate from top of memory. + */ +struct kexec_buf { + struct kimage *image; + void *buffer; + unsigned long bufsz; + unsigned long mem; + unsigned long memsz; + unsigned long buf_align; + unsigned long buf_min; + unsigned long buf_max; + bool top_down; +}; + +int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf, + int (*func)(u64, u64, void *)); +extern int kexec_add_buffer(struct kexec_buf *kbuf); +int kexec_locate_mem_hole(struct kexec_buf *kbuf); +#endif /* CONFIG_KEXEC_FILE */ struct kimage { kimage_entry_t head; @@ -212,11 +241,6 @@ extern asmlinkage long sys_kexec_load(unsigned long entry, struct kexec_segment __user *segments, unsigned long flags); extern int kernel_kexec(void); -extern int kexec_add_buffer(struct kimage *image, char *buffer, - unsigned long bufsz, unsigned long memsz, - unsigned long buf_align, unsigned long buf_min, - unsigned long buf_max, bool top_down, - unsigned long *load_addr); extern struct page *kimage_alloc_control_pages(struct kimage *image, unsigned int order); extern int kexec_load_purgatory(struct kimage *image, unsigned long min, diff --git a/include/soc/fsl/qman.h b/include/soc/fsl/qman.h index 37f3eb0..3d4df74 100644 --- a/include/soc/fsl/qman.h +++ b/include/soc/fsl/qman.h @@ -244,11 +244,11 @@ static inline int qm_sg_entry_get_off(const struct qm_sg_entry *sg) struct qm_dqrr_entry { u8 verb; u8 stat; - u16 seqnum; /* 15-bit */ + __be16 seqnum; /* 15-bit */ u8 tok; u8 __reserved2[3]; - u32 fqid; /* 24-bit */ - u32 contextB; + __be32 fqid; /* 24-bit */ + __be32 context_b; struct qm_fd fd; u8 __reserved4[32]; } __packed; @@ -262,6 +262,11 @@ struct qm_dqrr_entry { #define QM_DQRR_STAT_UNSCHEDULED 0x02 /* Unscheduled dequeue */ #define QM_DQRR_STAT_DQCR_EXPIRED 0x01 /* VDQCR or PDQCR expired*/ +/* 'fqid' is a 24-bit field in every h/w descriptor */ +#define QM_FQID_MASK GENMASK(23, 0) +#define qm_fqid_set(p, v) ((p)->fqid = cpu_to_be32((v) & QM_FQID_MASK)) +#define qm_fqid_get(p) (be32_to_cpu((p)->fqid) & QM_FQID_MASK) + /* "ERN Message Response" */ /* "FQ State Change Notification" */ union qm_mr_entry { @@ -272,12 +277,11 @@ union qm_mr_entry { struct { u8 verb; u8 dca; - u16 seqnum; + __be16 seqnum; u8 rc; /* Rej Code: 8-bit */ - u8 orp_hi; /* ORP: 24-bit */ - u16 orp_lo; - u32 fqid; /* 24-bit */ - u32 tag; + u8 __reserved[3]; + __be32 fqid; /* 24-bit */ + __be32 tag; struct qm_fd fd; u8 __reserved1[32]; } __packed ern; @@ -285,8 +289,8 @@ union qm_mr_entry { u8 verb; u8 fqs; /* Frame Queue Status */ u8 __reserved1[6]; - u32 fqid; /* 24-bit */ - u32 contextB; + __be32 fqid; /* 24-bit */ + __be32 context_b; u8 __reserved2[48]; } __packed fq; /* FQRN/FQRNI/FQRL/FQPN */ }; @@ -405,13 +409,13 @@ static inline u64 qm_fqd_context_a_get64(const struct qm_fqd *fqd) static inline void qm_fqd_stashing_set64(struct qm_fqd *fqd, u64 addr) { - fqd->context_a.context_hi = upper_32_bits(addr); - fqd->context_a.context_lo = lower_32_bits(addr); + fqd->context_a.context_hi = cpu_to_be16(upper_32_bits(addr)); + fqd->context_a.context_lo = cpu_to_be32(lower_32_bits(addr)); } static inline void qm_fqd_context_a_set64(struct qm_fqd *fqd, u64 addr) { - fqd->context_a.hi = cpu_to_be16(upper_32_bits(addr)); + fqd->context_a.hi = cpu_to_be32(upper_32_bits(addr)); fqd->context_a.lo = cpu_to_be32(lower_32_bits(addr)); } @@ -521,7 +525,7 @@ static inline int qm_fqd_get_wq(const struct qm_fqd *fqd) */ struct qm_cgr_wr_parm { /* MA[24-31], Mn[19-23], SA[12-18], Sn[6-11], Pn[0-5] */ - u32 word; + __be32 word; }; /* * This struct represents the 13-bit "CS_THRES" CGR field. In the corresponding @@ -532,7 +536,7 @@ struct qm_cgr_wr_parm { */ struct qm_cgr_cs_thres { /* _res[13-15], TA[5-12], Tn[0-4] */ - u16 word; + __be16 word; }; /* * This identical structure of CGR fields is present in the "Init/Modify CGR" @@ -549,10 +553,10 @@ struct __qm_mc_cgr { u8 cscn_en; /* boolean, use QM_CGR_EN */ union { struct { - u16 cscn_targ_upd_ctrl; /* use QM_CSCN_TARG_UDP_ */ - u16 cscn_targ_dcp_low; /* CSCN_TARG_DCP low-16bits */ + __be16 cscn_targ_upd_ctrl; /* use QM_CGR_TARG_UDP_* */ + __be16 cscn_targ_dcp_low; }; - u32 cscn_targ; /* use QM_CGR_TARG_* */ + __be32 cscn_targ; /* use QM_CGR_TARG_* */ }; u8 cstd_en; /* boolean, use QM_CGR_EN */ u8 cs; /* boolean, only used in query response */ @@ -568,7 +572,9 @@ struct __qm_mc_cgr { /* Convert CGR thresholds to/from "cs_thres" format */ static inline u64 qm_cgr_cs_thres_get64(const struct qm_cgr_cs_thres *th) { - return ((th->word >> 5) & 0xff) << (th->word & 0x1f); + int thres = be16_to_cpu(th->word); + + return ((thres >> 5) & 0xff) << (thres & 0x1f); } static inline int qm_cgr_cs_thres_set64(struct qm_cgr_cs_thres *th, u64 val, @@ -584,23 +590,23 @@ static inline int qm_cgr_cs_thres_set64(struct qm_cgr_cs_thres *th, u64 val, if (roundup && oddbit) val++; } - th->word = ((val & 0xff) << 5) | (e & 0x1f); + th->word = cpu_to_be16(((val & 0xff) << 5) | (e & 0x1f)); return 0; } /* "Initialize FQ" */ struct qm_mcc_initfq { u8 __reserved1[2]; - u16 we_mask; /* Write Enable Mask */ - u32 fqid; /* 24-bit */ - u16 count; /* Initialises 'count+1' FQDs */ + __be16 we_mask; /* Write Enable Mask */ + __be32 fqid; /* 24-bit */ + __be16 count; /* Initialises 'count+1' FQDs */ struct qm_fqd fqd; /* the FQD fields go here */ u8 __reserved2[30]; } __packed; /* "Initialize/Modify CGR" */ struct qm_mcc_initcgr { u8 __reserve1[2]; - u16 we_mask; /* Write Enable Mask */ + __be16 we_mask; /* Write Enable Mask */ struct __qm_mc_cgr cgr; /* CGR fields */ u8 __reserved2[2]; u8 cgid; @@ -654,7 +660,7 @@ struct qman_cgr; /* * This enum, and the callback type that returns it, are used when handling * dequeued frames via DQRR. Note that for "null" callbacks registered with the - * portal object (for handling dequeues that do not demux because contextB is + * portal object (for handling dequeues that do not demux because context_b is * NULL), the return value *MUST* be qman_cb_dqrr_consume. */ enum qman_cb_dqrr_result { @@ -859,11 +865,11 @@ void qman_p_static_dequeue_add(struct qman_portal *p, u32 pools); * qman_fq" for more info). NO_MODIFY is only intended for enqueuing to * pre-existing frame-queues that aren't to be otherwise interfered with, it * prevents all other modifications to the frame queue. The TO_DCPORTAL flag - * causes the driver to honour any contextB modifications requested in the + * causes the driver to honour any context_b modifications requested in the * qm_init_fq() API, as this indicates the frame queue will be consumed by a * direct-connect portal (PME, CAAM, or Fman). When frame queues are consumed by - * software portals, the contextB field is controlled by the driver and can't be - * modified by the caller. + * software portals, the context_b field is controlled by the driver and can't + * be modified by the caller. */ int qman_create_fq(u32 fqid, u32 flags, struct qman_fq *fq); diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 037c321..0c2df7f 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -428,25 +428,65 @@ static int locate_mem_hole_callback(u64 start, u64 end, void *arg) return locate_mem_hole_bottom_up(start, end, kbuf); } -/* - * Helper function for placing a buffer in a kexec segment. This assumes - * that kexec_mutex is held. +/** + * arch_kexec_walk_mem - call func(data) on free memory regions + * @kbuf: Context info for the search. Also passed to @func. + * @func: Function to call for each memory region. + * + * Return: The memory walk will stop when func returns a non-zero value + * and that value will be returned. If all free regions are visited without + * func returning non-zero, then zero will be returned. + */ +int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf, + int (*func)(u64, u64, void *)) +{ + if (kbuf->image->type == KEXEC_TYPE_CRASH) + return walk_iomem_res_desc(crashk_res.desc, + IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY, + crashk_res.start, crashk_res.end, + kbuf, func); + else + return walk_system_ram_res(0, ULONG_MAX, kbuf, func); +} + +/** + * kexec_locate_mem_hole - find free memory for the purgatory or the next kernel + * @kbuf: Parameters for the memory search. + * + * On success, kbuf->mem will have the start address of the memory region found. + * + * Return: 0 on success, negative errno on error. */ -int kexec_add_buffer(struct kimage *image, char *buffer, unsigned long bufsz, - unsigned long memsz, unsigned long buf_align, - unsigned long buf_min, unsigned long buf_max, - bool top_down, unsigned long *load_addr) +int kexec_locate_mem_hole(struct kexec_buf *kbuf) +{ + int ret; + + ret = arch_kexec_walk_mem(kbuf, locate_mem_hole_callback); + + return ret == 1 ? 0 : -EADDRNOTAVAIL; +} + +/** + * kexec_add_buffer - place a buffer in a kexec segment + * @kbuf: Buffer contents and memory parameters. + * + * This function assumes that kexec_mutex is held. + * On successful return, @kbuf->mem will have the physical address of + * the buffer in memory. + * + * Return: 0 on success, negative errno on error. + */ +int kexec_add_buffer(struct kexec_buf *kbuf) { struct kexec_segment *ksegment; - struct kexec_buf buf, *kbuf; int ret; /* Currently adding segment this way is allowed only in file mode */ - if (!image->file_mode) + if (!kbuf->image->file_mode) return -EINVAL; - if (image->nr_segments >= KEXEC_SEGMENT_MAX) + if (kbuf->image->nr_segments >= KEXEC_SEGMENT_MAX) return -EINVAL; /* @@ -456,45 +496,27 @@ int kexec_add_buffer(struct kimage *image, char *buffer, unsigned long bufsz, * logic goes through list of segments to make sure there are * no destination overlaps. */ - if (!list_empty(&image->control_pages)) { + if (!list_empty(&kbuf->image->control_pages)) { WARN_ON(1); return -EINVAL; } - memset(&buf, 0, sizeof(struct kexec_buf)); - kbuf = &buf; - kbuf->image = image; - kbuf->buffer = buffer; - kbuf->bufsz = bufsz; - - kbuf->memsz = ALIGN(memsz, PAGE_SIZE); - kbuf->buf_align = max(buf_align, PAGE_SIZE); - kbuf->buf_min = buf_min; - kbuf->buf_max = buf_max; - kbuf->top_down = top_down; + /* Ensure minimum alignment needed for segments. */ + kbuf->memsz = ALIGN(kbuf->memsz, PAGE_SIZE); + kbuf->buf_align = max(kbuf->buf_align, PAGE_SIZE); /* Walk the RAM ranges and allocate a suitable range for the buffer */ - if (image->type == KEXEC_TYPE_CRASH) - ret = walk_iomem_res_desc(crashk_res.desc, - IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY, - crashk_res.start, crashk_res.end, kbuf, - locate_mem_hole_callback); - else - ret = walk_system_ram_res(0, -1, kbuf, - locate_mem_hole_callback); - if (ret != 1) { - /* A suitable memory range could not be found for buffer */ - return -EADDRNOTAVAIL; - } + ret = kexec_locate_mem_hole(kbuf); + if (ret) + return ret; /* Found a suitable memory range */ - ksegment = &image->segment[image->nr_segments]; + ksegment = &kbuf->image->segment[kbuf->image->nr_segments]; ksegment->kbuf = kbuf->buffer; ksegment->bufsz = kbuf->bufsz; ksegment->mem = kbuf->mem; ksegment->memsz = kbuf->memsz; - image->nr_segments++; - *load_addr = ksegment->mem; + kbuf->image->nr_segments++; return 0; } @@ -616,13 +638,15 @@ static int __kexec_load_purgatory(struct kimage *image, unsigned long min, unsigned long max, int top_down) { struct purgatory_info *pi = &image->purgatory_info; - unsigned long align, buf_align, bss_align, buf_sz, bss_sz, bss_pad; - unsigned long memsz, entry, load_addr, curr_load_addr, bss_addr, offset; + unsigned long align, bss_align, bss_sz, bss_pad; + unsigned long entry, load_addr, curr_load_addr, bss_addr, offset; unsigned char *buf_addr, *src; int i, ret = 0, entry_sidx = -1; const Elf_Shdr *sechdrs_c; Elf_Shdr *sechdrs = NULL; - void *purgatory_buf = NULL; + struct kexec_buf kbuf = { .image = image, .bufsz = 0, .buf_align = 1, + .buf_min = min, .buf_max = max, + .top_down = top_down }; /* * sechdrs_c points to section headers in purgatory and are read @@ -688,9 +712,7 @@ static int __kexec_load_purgatory(struct kimage *image, unsigned long min, } /* Determine how much memory is needed to load relocatable object. */ - buf_align = 1; bss_align = 1; - buf_sz = 0; bss_sz = 0; for (i = 0; i < pi->ehdr->e_shnum; i++) { @@ -699,10 +721,10 @@ static int __kexec_load_purgatory(struct kimage *image, unsigned long min, align = sechdrs[i].sh_addralign; if (sechdrs[i].sh_type != SHT_NOBITS) { - if (buf_align < align) - buf_align = align; - buf_sz = ALIGN(buf_sz, align); - buf_sz += sechdrs[i].sh_size; + if (kbuf.buf_align < align) + kbuf.buf_align = align; + kbuf.bufsz = ALIGN(kbuf.bufsz, align); + kbuf.bufsz += sechdrs[i].sh_size; } else { /* bss section */ if (bss_align < align) @@ -714,32 +736,31 @@ static int __kexec_load_purgatory(struct kimage *image, unsigned long min, /* Determine the bss padding required to align bss properly */ bss_pad = 0; - if (buf_sz & (bss_align - 1)) - bss_pad = bss_align - (buf_sz & (bss_align - 1)); + if (kbuf.bufsz & (bss_align - 1)) + bss_pad = bss_align - (kbuf.bufsz & (bss_align - 1)); - memsz = buf_sz + bss_pad + bss_sz; + kbuf.memsz = kbuf.bufsz + bss_pad + bss_sz; /* Allocate buffer for purgatory */ - purgatory_buf = vzalloc(buf_sz); - if (!purgatory_buf) { + kbuf.buffer = vzalloc(kbuf.bufsz); + if (!kbuf.buffer) { ret = -ENOMEM; goto out; } - if (buf_align < bss_align) - buf_align = bss_align; + if (kbuf.buf_align < bss_align) + kbuf.buf_align = bss_align; /* Add buffer to segment list */ - ret = kexec_add_buffer(image, purgatory_buf, buf_sz, memsz, - buf_align, min, max, top_down, - &pi->purgatory_load_addr); + ret = kexec_add_buffer(&kbuf); if (ret) goto out; + pi->purgatory_load_addr = kbuf.mem; /* Load SHF_ALLOC sections */ - buf_addr = purgatory_buf; + buf_addr = kbuf.buffer; load_addr = curr_load_addr = pi->purgatory_load_addr; - bss_addr = load_addr + buf_sz + bss_pad; + bss_addr = load_addr + kbuf.bufsz + bss_pad; for (i = 0; i < pi->ehdr->e_shnum; i++) { if (!(sechdrs[i].sh_flags & SHF_ALLOC)) @@ -785,11 +806,11 @@ static int __kexec_load_purgatory(struct kimage *image, unsigned long min, * Used later to identify which section is purgatory and skip it * from checksumming. */ - pi->purgatory_buf = purgatory_buf; + pi->purgatory_buf = kbuf.buffer; return ret; out: vfree(sechdrs); - vfree(purgatory_buf); + vfree(kbuf.buffer); return ret; } diff --git a/kernel/kexec_internal.h b/kernel/kexec_internal.h index 0a52315..4cef7e4 100644 --- a/kernel/kexec_internal.h +++ b/kernel/kexec_internal.h @@ -20,22 +20,6 @@ struct kexec_sha_region { unsigned long len; }; -/* - * Keeps track of buffer parameters as provided by caller for requesting - * memory placement of buffer. - */ -struct kexec_buf { - struct kimage *image; - char *buffer; - unsigned long bufsz; - unsigned long mem; - unsigned long memsz; - unsigned long buf_align; - unsigned long buf_min; - unsigned long buf_max; - bool top_down; /* allocate from top of memory hole */ -}; - void kimage_file_post_load_cleanup(struct kimage *image); #else /* CONFIG_KEXEC_FILE */ static inline void kimage_file_post_load_cleanup(struct kimage *image) { } diff --git a/scripts/sortextable.c b/scripts/sortextable.c index f453b7c..365a907 100644 --- a/scripts/sortextable.c +++ b/scripts/sortextable.c @@ -316,6 +316,8 @@ do_file(char const *const fname) case EM_S390: case EM_AARCH64: case EM_PARISC: + case EM_PPC: + case EM_PPC64: custom_sort = sort_relative_table; break; case EM_ARCOMPACT: diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile index db54a33..c2c4211 100644 --- a/tools/testing/selftests/powerpc/Makefile +++ b/tools/testing/selftests/powerpc/Makefile @@ -8,7 +8,7 @@ ifeq ($(ARCH),powerpc) GIT_VERSION = $(shell git describe --always --long --dirty || echo "unknown") -CFLAGS := -std=gnu99 -Wall -O2 -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CURDIR) $(CFLAGS) +CFLAGS := -std=gnu99 -Wall -O2 -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CURDIR)/include $(CFLAGS) export CFLAGS @@ -26,7 +26,8 @@ SUB_DIRS = alignment \ syscalls \ tm \ vphn \ - math + math \ + ptrace endif diff --git a/tools/testing/selftests/powerpc/benchmarks/.gitignore b/tools/testing/selftests/powerpc/benchmarks/.gitignore index bce49eb..04dc1e6 100644 --- a/tools/testing/selftests/powerpc/benchmarks/.gitignore +++ b/tools/testing/selftests/powerpc/benchmarks/.gitignore @@ -1,4 +1,5 @@ gettimeofday context_switch mmap_bench -futex_bench
\ No newline at end of file +futex_bench +null_syscall diff --git a/tools/testing/selftests/powerpc/benchmarks/Makefile b/tools/testing/selftests/powerpc/benchmarks/Makefile index a9adfb7..545077f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/Makefile +++ b/tools/testing/selftests/powerpc/benchmarks/Makefile @@ -1,4 +1,4 @@ -TEST_PROGS := gettimeofday context_switch mmap_bench futex_bench +TEST_PROGS := gettimeofday context_switch mmap_bench futex_bench null_syscall CFLAGS += -O2 diff --git a/tools/testing/selftests/powerpc/benchmarks/context_switch.c b/tools/testing/selftests/powerpc/benchmarks/context_switch.c index a36883a..778f5fb 100644 --- a/tools/testing/selftests/powerpc/benchmarks/context_switch.c +++ b/tools/testing/selftests/powerpc/benchmarks/context_switch.c @@ -28,7 +28,7 @@ #ifdef __powerpc__ #include <altivec.h> #endif -#include "../utils.h" +#include "utils.h" static unsigned int timeout = 30; diff --git a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c new file mode 100644 index 0000000..ecc14d6 --- /dev/null +++ b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c @@ -0,0 +1,157 @@ +/* + * Test null syscall performance + * + * Copyright (C) 2009-2015 Anton Blanchard, IBM + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#define NR_LOOPS 10000000 + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <time.h> +#include <sys/types.h> +#include <sys/time.h> +#include <signal.h> + +static volatile int soak_done; +unsigned long long clock_frequency; +unsigned long long timebase_frequency; +double timebase_multiplier; + +static inline unsigned long long mftb(void) +{ + unsigned long low; + + asm volatile("mftb %0" : "=r" (low)); + + return low; +} + +static void sigalrm_handler(int unused) +{ + soak_done = 1; +} + +/* + * Use a timer instead of busy looping on clock_gettime() so we don't + * pollute profiles with glibc and VDSO hits. + */ +static void cpu_soak_usecs(unsigned long usecs) +{ + struct itimerval val; + + memset(&val, 0, sizeof(val)); + val.it_value.tv_usec = usecs; + + signal(SIGALRM, sigalrm_handler); + setitimer(ITIMER_REAL, &val, NULL); + + while (1) { + if (soak_done) + break; + } + + signal(SIGALRM, SIG_DFL); +} + +/* + * This only works with recent kernels where cpufreq modifies + * /proc/cpuinfo dynamically. + */ +static void get_proc_frequency(void) +{ + FILE *f; + char line[128]; + char *p, *end; + unsigned long v; + double d; + char *override; + + /* Try to get out of low power/low frequency mode */ + cpu_soak_usecs(0.25 * 1000000); + + f = fopen("/proc/cpuinfo", "r"); + if (f == NULL) + return; + + timebase_frequency = 0; + + while (fgets(line, sizeof(line), f) != NULL) { + if (strncmp(line, "timebase", 8) == 0) { + p = strchr(line, ':'); + if (p != NULL) { + v = strtoull(p + 1, &end, 0); + if (end != p + 1) + timebase_frequency = v; + } + } + + if (((strncmp(line, "clock", 5) == 0) || + (strncmp(line, "cpu MHz", 7) == 0))) { + p = strchr(line, ':'); + if (p != NULL) { + d = strtod(p + 1, &end); + if (end != p + 1) { + /* Find fastest clock frequency */ + if ((d * 1000000ULL) > clock_frequency) + clock_frequency = d * 1000000ULL; + } + } + } + } + + fclose(f); + + override = getenv("FREQUENCY"); + if (override) + clock_frequency = strtoull(override, NULL, 10); + + if (timebase_frequency) + timebase_multiplier = (double)clock_frequency + / timebase_frequency; + else + timebase_multiplier = 1; +} + +static void do_null_syscall(unsigned long nr) +{ + unsigned long i; + + for (i = 0; i < nr; i++) + getppid(); +} + +#define TIME(A, STR) \ + +int main(void) +{ + unsigned long tb_start, tb_now; + struct timespec tv_start, tv_now; + unsigned long long elapsed_ns, elapsed_tb; + + get_proc_frequency(); + + clock_gettime(CLOCK_MONOTONIC, &tv_start); + tb_start = mftb(); + + do_null_syscall(NR_LOOPS); + + clock_gettime(CLOCK_MONOTONIC, &tv_now); + tb_now = mftb(); + + elapsed_ns = (tv_now.tv_sec - tv_start.tv_sec) * 1000000000ULL + + (tv_now.tv_nsec - tv_start.tv_nsec); + elapsed_tb = tb_now - tb_start; + + printf("%10.2f ns %10.2f cycles\n", (float)elapsed_ns / NR_LOOPS, + (float)elapsed_tb * timebase_multiplier / NR_LOOPS); + + return 0; +} diff --git a/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h b/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h index 50ae7d2..80d34a9 100644 --- a/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h +++ b/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h @@ -25,6 +25,8 @@ #define PPC_MTOCRF(A, B) mtocrf A, B +#define EX_TABLE(x, y) + FUNC_START(enter_vmx_usercopy) li r3,1 blr diff --git a/tools/testing/selftests/powerpc/copyloops/validate.c b/tools/testing/selftests/powerpc/copyloops/validate.c index 1750ff5..7fb436f 100644 --- a/tools/testing/selftests/powerpc/copyloops/validate.c +++ b/tools/testing/selftests/powerpc/copyloops/validate.c @@ -3,7 +3,7 @@ #include <stdlib.h> #include <stdbool.h> -#include "../utils.h" +#include "utils.h" #define MAX_LEN 8192 #define MAX_OFFSET 16 diff --git a/tools/testing/selftests/powerpc/dscr/dscr.h b/tools/testing/selftests/powerpc/dscr/dscr.h index a36af1b..18ea223b 100644 --- a/tools/testing/selftests/powerpc/dscr/dscr.h +++ b/tools/testing/selftests/powerpc/dscr/dscr.h @@ -28,8 +28,6 @@ #include "utils.h" -#define SPRN_DSCR 0x11 /* Privilege state SPR */ -#define SPRN_DSCR_USR 0x03 /* Problem state SPR */ #define THREADS 100 /* Max threads */ #define COUNT 100 /* Max iterations */ #define DSCR_MAX 16 /* Max DSCR value */ @@ -48,14 +46,14 @@ inline unsigned long get_dscr(void) { unsigned long ret; - asm volatile("mfspr %0,%1" : "=r" (ret): "i" (SPRN_DSCR)); + asm volatile("mfspr %0,%1" : "=r" (ret) : "i" (SPRN_DSCR_PRIV)); return ret; } inline void set_dscr(unsigned long val) { - asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR)); + asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR_PRIV)); } /* Problem state DSCR access */ @@ -63,14 +61,14 @@ inline unsigned long get_dscr_usr(void) { unsigned long ret; - asm volatile("mfspr %0,%1" : "=r" (ret): "i" (SPRN_DSCR_USR)); + asm volatile("mfspr %0,%1" : "=r" (ret) : "i" (SPRN_DSCR)); return ret; } inline void set_dscr_usr(unsigned long val) { - asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR_USR)); + asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR)); } /* Default DSCR access */ diff --git a/tools/testing/selftests/powerpc/basic_asm.h b/tools/testing/selftests/powerpc/include/basic_asm.h index 3349a07..12eaddf 100644 --- a/tools/testing/selftests/powerpc/basic_asm.h +++ b/tools/testing/selftests/powerpc/include/basic_asm.h @@ -4,12 +4,12 @@ #include <ppc-asm.h> #include <asm/unistd.h> -#define LOAD_REG_IMMEDIATE(reg,expr) \ - lis reg,(expr)@highest; \ - ori reg,reg,(expr)@higher; \ - rldicr reg,reg,32,31; \ - oris reg,reg,(expr)@high; \ - ori reg,reg,(expr)@l; +#define LOAD_REG_IMMEDIATE(reg, expr) \ + lis reg, (expr)@highest; \ + ori reg, reg, (expr)@higher; \ + rldicr reg, reg, 32, 31; \ + oris reg, reg, (expr)@high; \ + ori reg, reg, (expr)@l; /* * Note: These macros assume that variables being stored on the stack are @@ -20,7 +20,8 @@ #define STACK_FRAME_MIN_SIZE 32 #define STACK_FRAME_TOC_POS 24 #define __STACK_FRAME_PARAM(_param) (32 + ((_param)*8)) -#define __STACK_FRAME_LOCAL(_num_params,_var_num) ((STACK_FRAME_PARAM(_num_params)) + ((_var_num)*8)) +#define __STACK_FRAME_LOCAL(_num_params, _var_num) \ + ((STACK_FRAME_PARAM(_num_params)) + ((_var_num)*8)) #else #define STACK_FRAME_MIN_SIZE 112 #define STACK_FRAME_TOC_POS 40 @@ -30,14 +31,16 @@ * Caveat: if a function passed more than 8 doublewords, the caller will have * made more space... which would render the 112 incorrect. */ -#define __STACK_FRAME_LOCAL(_num_params,_var_num) (112 + ((_var_num)*8)) +#define __STACK_FRAME_LOCAL(_num_params, _var_num) \ + (112 + ((_var_num)*8)) #endif /* Parameter x saved to the stack */ #define STACK_FRAME_PARAM(var) __STACK_FRAME_PARAM(var) /* Local variable x saved to the stack after x parameters */ -#define STACK_FRAME_LOCAL(num_params,var) __STACK_FRAME_LOCAL(num_params,var) +#define STACK_FRAME_LOCAL(num_params, var) \ + __STACK_FRAME_LOCAL(num_params, var) #define STACK_FRAME_LR_POS 16 #define STACK_FRAME_CR_POS 8 @@ -53,18 +56,18 @@ */ #define PUSH_BASIC_STACK(_extra) \ mflr r0; \ - std r0,STACK_FRAME_LR_POS(%r1); \ - stdu %r1,-(_extra + STACK_FRAME_MIN_SIZE)(%r1); \ + std r0, STACK_FRAME_LR_POS(%r1); \ + stdu %r1, -(_extra + STACK_FRAME_MIN_SIZE)(%r1); \ mfcr r0; \ - stw r0,STACK_FRAME_CR_POS(%r1); \ - std %r2,STACK_FRAME_TOC_POS(%r1); + stw r0, STACK_FRAME_CR_POS(%r1); \ + std %r2, STACK_FRAME_TOC_POS(%r1); #define POP_BASIC_STACK(_extra) \ - ld %r2,STACK_FRAME_TOC_POS(%r1); \ - lwz r0,STACK_FRAME_CR_POS(%r1); \ + ld %r2, STACK_FRAME_TOC_POS(%r1); \ + lwz r0, STACK_FRAME_CR_POS(%r1); \ mtcr r0; \ - addi %r1,%r1,(_extra + STACK_FRAME_MIN_SIZE); \ - ld r0,STACK_FRAME_LR_POS(%r1); \ + addi %r1, %r1, (_extra + STACK_FRAME_MIN_SIZE); \ + ld r0, STACK_FRAME_LR_POS(%r1); \ mtlr r0; #endif /* _SELFTESTS_POWERPC_BASIC_ASM_H */ diff --git a/tools/testing/selftests/powerpc/fpu_asm.h b/tools/testing/selftests/powerpc/include/fpu_asm.h index 6a387d2..6a387d2 100644 --- a/tools/testing/selftests/powerpc/fpu_asm.h +++ b/tools/testing/selftests/powerpc/include/fpu_asm.h diff --git a/tools/testing/selftests/powerpc/gpr_asm.h b/tools/testing/selftests/powerpc/include/gpr_asm.h index f6f3885..f6f3885 100644 --- a/tools/testing/selftests/powerpc/gpr_asm.h +++ b/tools/testing/selftests/powerpc/include/gpr_asm.h diff --git a/tools/testing/selftests/powerpc/instructions.h b/tools/testing/selftests/powerpc/include/instructions.h index 0fb0bd3..0fb0bd3 100644 --- a/tools/testing/selftests/powerpc/instructions.h +++ b/tools/testing/selftests/powerpc/include/instructions.h diff --git a/tools/testing/selftests/powerpc/include/reg.h b/tools/testing/selftests/powerpc/include/reg.h new file mode 100644 index 0000000..4afdebc --- /dev/null +++ b/tools/testing/selftests/powerpc/include/reg.h @@ -0,0 +1,145 @@ +/* + * Copyright 2014, Michael Ellerman, IBM Corp. + * Licensed under GPLv2. + */ + +#ifndef _SELFTESTS_POWERPC_REG_H +#define _SELFTESTS_POWERPC_REG_H + +#define __stringify_1(x) #x +#define __stringify(x) __stringify_1(x) + +#define mfspr(rn) ({unsigned long rval; \ + asm volatile("mfspr %0," _str(rn) \ + : "=r" (rval)); rval; }) +#define mtspr(rn, v) asm volatile("mtspr " _str(rn) ",%0" : \ + : "r" ((unsigned long)(v)) \ + : "memory") + +#define mb() asm volatile("sync" : : : "memory"); + +#define SPRN_MMCR2 769 +#define SPRN_MMCRA 770 +#define SPRN_MMCR0 779 +#define MMCR0_PMAO 0x00000080 +#define MMCR0_PMAE 0x04000000 +#define MMCR0_FC 0x80000000 +#define SPRN_EBBHR 804 +#define SPRN_EBBRR 805 +#define SPRN_BESCR 806 /* Branch event status & control register */ +#define SPRN_BESCRS 800 /* Branch event status & control set (1 bits set to 1) */ +#define SPRN_BESCRSU 801 /* Branch event status & control set upper */ +#define SPRN_BESCRR 802 /* Branch event status & control REset (1 bits set to 0) */ +#define SPRN_BESCRRU 803 /* Branch event status & control REset upper */ + +#define BESCR_PMEO 0x1 /* PMU Event-based exception Occurred */ +#define BESCR_PME (0x1ul << 32) /* PMU Event-based exception Enable */ + +#define SPRN_PMC1 771 +#define SPRN_PMC2 772 +#define SPRN_PMC3 773 +#define SPRN_PMC4 774 +#define SPRN_PMC5 775 +#define SPRN_PMC6 776 + +#define SPRN_SIAR 780 +#define SPRN_SDAR 781 +#define SPRN_SIER 768 + +#define SPRN_TEXASR 0x82 /* Transaction Exception and Status Register */ +#define SPRN_TFIAR 0x81 /* Transaction Failure Inst Addr */ +#define SPRN_TFHAR 0x80 /* Transaction Failure Handler Addr */ +#define SPRN_TAR 0x32f /* Target Address Register */ + +#define SPRN_DSCR_PRIV 0x11 /* Privilege State DSCR */ +#define SPRN_DSCR 0x03 /* Data Stream Control Register */ +#define SPRN_PPR 896 /* Program Priority Register */ + +/* TEXASR register bits */ +#define TEXASR_FC 0xFE00000000000000 +#define TEXASR_FP 0x0100000000000000 +#define TEXASR_DA 0x0080000000000000 +#define TEXASR_NO 0x0040000000000000 +#define TEXASR_FO 0x0020000000000000 +#define TEXASR_SIC 0x0010000000000000 +#define TEXASR_NTC 0x0008000000000000 +#define TEXASR_TC 0x0004000000000000 +#define TEXASR_TIC 0x0002000000000000 +#define TEXASR_IC 0x0001000000000000 +#define TEXASR_IFC 0x0000800000000000 +#define TEXASR_ABT 0x0000000100000000 +#define TEXASR_SPD 0x0000000080000000 +#define TEXASR_HV 0x0000000020000000 +#define TEXASR_PR 0x0000000010000000 +#define TEXASR_FS 0x0000000008000000 +#define TEXASR_TE 0x0000000004000000 +#define TEXASR_ROT 0x0000000002000000 + +/* Vector Instructions */ +#define VSX_XX1(xs, ra, rb) (((xs) & 0x1f) << 21 | ((ra) << 16) | \ + ((rb) << 11) | (((xs) >> 5))) +#define STXVD2X(xs, ra, rb) .long (0x7c000798 | VSX_XX1((xs), (ra), (rb))) +#define LXVD2X(xs, ra, rb) .long (0x7c000698 | VSX_XX1((xs), (ra), (rb))) + +#define ASM_LOAD_GPR_IMMED(_asm_symbol_name_immed) \ + "li 14, %[" #_asm_symbol_name_immed "];" \ + "li 15, %[" #_asm_symbol_name_immed "];" \ + "li 16, %[" #_asm_symbol_name_immed "];" \ + "li 17, %[" #_asm_symbol_name_immed "];" \ + "li 18, %[" #_asm_symbol_name_immed "];" \ + "li 19, %[" #_asm_symbol_name_immed "];" \ + "li 20, %[" #_asm_symbol_name_immed "];" \ + "li 21, %[" #_asm_symbol_name_immed "];" \ + "li 22, %[" #_asm_symbol_name_immed "];" \ + "li 23, %[" #_asm_symbol_name_immed "];" \ + "li 24, %[" #_asm_symbol_name_immed "];" \ + "li 25, %[" #_asm_symbol_name_immed "];" \ + "li 26, %[" #_asm_symbol_name_immed "];" \ + "li 27, %[" #_asm_symbol_name_immed "];" \ + "li 28, %[" #_asm_symbol_name_immed "];" \ + "li 29, %[" #_asm_symbol_name_immed "];" \ + "li 30, %[" #_asm_symbol_name_immed "];" \ + "li 31, %[" #_asm_symbol_name_immed "];" + +#define ASM_LOAD_FPR_SINGLE_PRECISION(_asm_symbol_name_addr) \ + "lfs 0, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 1, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 2, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 3, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 4, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 5, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 6, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 7, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 8, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 9, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 10, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 11, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 12, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 13, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 14, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 15, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 16, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 17, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 18, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 19, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 20, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 21, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 22, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 23, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 24, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 25, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 26, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 27, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 28, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 29, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 30, 0(%[" #_asm_symbol_name_addr "]);" \ + "lfs 31, 0(%[" #_asm_symbol_name_addr "]);" + +#ifndef __ASSEMBLER__ +void store_gpr(unsigned long *addr); +void load_gpr(unsigned long *addr); +void load_fpr_single_precision(float *addr); +void store_fpr_single_precision(float *addr); +#endif /* end of __ASSEMBLER__ */ + +#endif /* _SELFTESTS_POWERPC_REG_H */ diff --git a/tools/testing/selftests/powerpc/subunit.h b/tools/testing/selftests/powerpc/include/subunit.h index 9c6c4e9..9c6c4e9 100644 --- a/tools/testing/selftests/powerpc/subunit.h +++ b/tools/testing/selftests/powerpc/include/subunit.h diff --git a/tools/testing/selftests/powerpc/utils.h b/tools/testing/selftests/powerpc/include/utils.h index 53405e8..53405e8 100644 --- a/tools/testing/selftests/powerpc/utils.h +++ b/tools/testing/selftests/powerpc/include/utils.h diff --git a/tools/testing/selftests/powerpc/vmx_asm.h b/tools/testing/selftests/powerpc/include/vmx_asm.h index 2eaaeca..2eaaeca 100644 --- a/tools/testing/selftests/powerpc/vmx_asm.h +++ b/tools/testing/selftests/powerpc/include/vmx_asm.h diff --git a/tools/testing/selftests/powerpc/vsx_asm.h b/tools/testing/selftests/powerpc/include/vsx_asm.h index d828bfb..d828bfb 100644 --- a/tools/testing/selftests/powerpc/vsx_asm.h +++ b/tools/testing/selftests/powerpc/include/vsx_asm.h diff --git a/tools/testing/selftests/powerpc/lib/reg.S b/tools/testing/selftests/powerpc/lib/reg.S new file mode 100644 index 0000000..0dc44f0d --- /dev/null +++ b/tools/testing/selftests/powerpc/lib/reg.S @@ -0,0 +1,397 @@ +/* + * test helper assembly functions + * + * Copyright (C) 2016 Simon Guo, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <ppc-asm.h> +#include "reg.h" + + +/* Non volatile GPR - unsigned long buf[18] */ +FUNC_START(load_gpr) + ld 14, 0*8(3) + ld 15, 1*8(3) + ld 16, 2*8(3) + ld 17, 3*8(3) + ld 18, 4*8(3) + ld 19, 5*8(3) + ld 20, 6*8(3) + ld 21, 7*8(3) + ld 22, 8*8(3) + ld 23, 9*8(3) + ld 24, 10*8(3) + ld 25, 11*8(3) + ld 26, 12*8(3) + ld 27, 13*8(3) + ld 28, 14*8(3) + ld 29, 15*8(3) + ld 30, 16*8(3) + ld 31, 17*8(3) + blr +FUNC_END(load_gpr) + +FUNC_START(store_gpr) + std 14, 0*8(3) + std 15, 1*8(3) + std 16, 2*8(3) + std 17, 3*8(3) + std 18, 4*8(3) + std 19, 5*8(3) + std 20, 6*8(3) + std 21, 7*8(3) + std 22, 8*8(3) + std 23, 9*8(3) + std 24, 10*8(3) + std 25, 11*8(3) + std 26, 12*8(3) + std 27, 13*8(3) + std 28, 14*8(3) + std 29, 15*8(3) + std 30, 16*8(3) + std 31, 17*8(3) + blr +FUNC_END(store_gpr) + +/* Single Precision Float - float buf[32] */ +FUNC_START(load_fpr_single_precision) + lfs 0, 0*4(3) + lfs 1, 1*4(3) + lfs 2, 2*4(3) + lfs 3, 3*4(3) + lfs 4, 4*4(3) + lfs 5, 5*4(3) + lfs 6, 6*4(3) + lfs 7, 7*4(3) + lfs 8, 8*4(3) + lfs 9, 9*4(3) + lfs 10, 10*4(3) + lfs 11, 11*4(3) + lfs 12, 12*4(3) + lfs 13, 13*4(3) + lfs 14, 14*4(3) + lfs 15, 15*4(3) + lfs 16, 16*4(3) + lfs 17, 17*4(3) + lfs 18, 18*4(3) + lfs 19, 19*4(3) + lfs 20, 20*4(3) + lfs 21, 21*4(3) + lfs 22, 22*4(3) + lfs 23, 23*4(3) + lfs 24, 24*4(3) + lfs 25, 25*4(3) + lfs 26, 26*4(3) + lfs 27, 27*4(3) + lfs 28, 28*4(3) + lfs 29, 29*4(3) + lfs 30, 30*4(3) + lfs 31, 31*4(3) + blr +FUNC_END(load_fpr_single_precision) + +/* Single Precision Float - float buf[32] */ +FUNC_START(store_fpr_single_precision) + stfs 0, 0*4(3) + stfs 1, 1*4(3) + stfs 2, 2*4(3) + stfs 3, 3*4(3) + stfs 4, 4*4(3) + stfs 5, 5*4(3) + stfs 6, 6*4(3) + stfs 7, 7*4(3) + stfs 8, 8*4(3) + stfs 9, 9*4(3) + stfs 10, 10*4(3) + stfs 11, 11*4(3) + stfs 12, 12*4(3) + stfs 13, 13*4(3) + stfs 14, 14*4(3) + stfs 15, 15*4(3) + stfs 16, 16*4(3) + stfs 17, 17*4(3) + stfs 18, 18*4(3) + stfs 19, 19*4(3) + stfs 20, 20*4(3) + stfs 21, 21*4(3) + stfs 22, 22*4(3) + stfs 23, 23*4(3) + stfs 24, 24*4(3) + stfs 25, 25*4(3) + stfs 26, 26*4(3) + stfs 27, 27*4(3) + stfs 28, 28*4(3) + stfs 29, 29*4(3) + stfs 30, 30*4(3) + stfs 31, 31*4(3) + blr +FUNC_END(store_fpr_single_precision) + +/* VMX/VSX registers - unsigned long buf[128] */ +FUNC_START(loadvsx) + lis 4, 0 + LXVD2X (0,(4),(3)) + addi 4, 4, 16 + LXVD2X (1,(4),(3)) + addi 4, 4, 16 + LXVD2X (2,(4),(3)) + addi 4, 4, 16 + LXVD2X (3,(4),(3)) + addi 4, 4, 16 + LXVD2X (4,(4),(3)) + addi 4, 4, 16 + LXVD2X (5,(4),(3)) + addi 4, 4, 16 + LXVD2X (6,(4),(3)) + addi 4, 4, 16 + LXVD2X (7,(4),(3)) + addi 4, 4, 16 + LXVD2X (8,(4),(3)) + addi 4, 4, 16 + LXVD2X (9,(4),(3)) + addi 4, 4, 16 + LXVD2X (10,(4),(3)) + addi 4, 4, 16 + LXVD2X (11,(4),(3)) + addi 4, 4, 16 + LXVD2X (12,(4),(3)) + addi 4, 4, 16 + LXVD2X (13,(4),(3)) + addi 4, 4, 16 + LXVD2X (14,(4),(3)) + addi 4, 4, 16 + LXVD2X (15,(4),(3)) + addi 4, 4, 16 + LXVD2X (16,(4),(3)) + addi 4, 4, 16 + LXVD2X (17,(4),(3)) + addi 4, 4, 16 + LXVD2X (18,(4),(3)) + addi 4, 4, 16 + LXVD2X (19,(4),(3)) + addi 4, 4, 16 + LXVD2X (20,(4),(3)) + addi 4, 4, 16 + LXVD2X (21,(4),(3)) + addi 4, 4, 16 + LXVD2X (22,(4),(3)) + addi 4, 4, 16 + LXVD2X (23,(4),(3)) + addi 4, 4, 16 + LXVD2X (24,(4),(3)) + addi 4, 4, 16 + LXVD2X (25,(4),(3)) + addi 4, 4, 16 + LXVD2X (26,(4),(3)) + addi 4, 4, 16 + LXVD2X (27,(4),(3)) + addi 4, 4, 16 + LXVD2X (28,(4),(3)) + addi 4, 4, 16 + LXVD2X (29,(4),(3)) + addi 4, 4, 16 + LXVD2X (30,(4),(3)) + addi 4, 4, 16 + LXVD2X (31,(4),(3)) + addi 4, 4, 16 + LXVD2X (32,(4),(3)) + addi 4, 4, 16 + LXVD2X (33,(4),(3)) + addi 4, 4, 16 + LXVD2X (34,(4),(3)) + addi 4, 4, 16 + LXVD2X (35,(4),(3)) + addi 4, 4, 16 + LXVD2X (36,(4),(3)) + addi 4, 4, 16 + LXVD2X (37,(4),(3)) + addi 4, 4, 16 + LXVD2X (38,(4),(3)) + addi 4, 4, 16 + LXVD2X (39,(4),(3)) + addi 4, 4, 16 + LXVD2X (40,(4),(3)) + addi 4, 4, 16 + LXVD2X (41,(4),(3)) + addi 4, 4, 16 + LXVD2X (42,(4),(3)) + addi 4, 4, 16 + LXVD2X (43,(4),(3)) + addi 4, 4, 16 + LXVD2X (44,(4),(3)) + addi 4, 4, 16 + LXVD2X (45,(4),(3)) + addi 4, 4, 16 + LXVD2X (46,(4),(3)) + addi 4, 4, 16 + LXVD2X (47,(4),(3)) + addi 4, 4, 16 + LXVD2X (48,(4),(3)) + addi 4, 4, 16 + LXVD2X (49,(4),(3)) + addi 4, 4, 16 + LXVD2X (50,(4),(3)) + addi 4, 4, 16 + LXVD2X (51,(4),(3)) + addi 4, 4, 16 + LXVD2X (52,(4),(3)) + addi 4, 4, 16 + LXVD2X (53,(4),(3)) + addi 4, 4, 16 + LXVD2X (54,(4),(3)) + addi 4, 4, 16 + LXVD2X (55,(4),(3)) + addi 4, 4, 16 + LXVD2X (56,(4),(3)) + addi 4, 4, 16 + LXVD2X (57,(4),(3)) + addi 4, 4, 16 + LXVD2X (58,(4),(3)) + addi 4, 4, 16 + LXVD2X (59,(4),(3)) + addi 4, 4, 16 + LXVD2X (60,(4),(3)) + addi 4, 4, 16 + LXVD2X (61,(4),(3)) + addi 4, 4, 16 + LXVD2X (62,(4),(3)) + addi 4, 4, 16 + LXVD2X (63,(4),(3)) + blr +FUNC_END(loadvsx) + +FUNC_START(storevsx) + lis 4, 0 + STXVD2X (0,(4),(3)) + addi 4, 4, 16 + STXVD2X (1,(4),(3)) + addi 4, 4, 16 + STXVD2X (2,(4),(3)) + addi 4, 4, 16 + STXVD2X (3,(4),(3)) + addi 4, 4, 16 + STXVD2X (4,(4),(3)) + addi 4, 4, 16 + STXVD2X (5,(4),(3)) + addi 4, 4, 16 + STXVD2X (6,(4),(3)) + addi 4, 4, 16 + STXVD2X (7,(4),(3)) + addi 4, 4, 16 + STXVD2X (8,(4),(3)) + addi 4, 4, 16 + STXVD2X (9,(4),(3)) + addi 4, 4, 16 + STXVD2X (10,(4),(3)) + addi 4, 4, 16 + STXVD2X (11,(4),(3)) + addi 4, 4, 16 + STXVD2X (12,(4),(3)) + addi 4, 4, 16 + STXVD2X (13,(4),(3)) + addi 4, 4, 16 + STXVD2X (14,(4),(3)) + addi 4, 4, 16 + STXVD2X (15,(4),(3)) + addi 4, 4, 16 + STXVD2X (16,(4),(3)) + addi 4, 4, 16 + STXVD2X (17,(4),(3)) + addi 4, 4, 16 + STXVD2X (18,(4),(3)) + addi 4, 4, 16 + STXVD2X (19,(4),(3)) + addi 4, 4, 16 + STXVD2X (20,(4),(3)) + addi 4, 4, 16 + STXVD2X (21,(4),(3)) + addi 4, 4, 16 + STXVD2X (22,(4),(3)) + addi 4, 4, 16 + STXVD2X (23,(4),(3)) + addi 4, 4, 16 + STXVD2X (24,(4),(3)) + addi 4, 4, 16 + STXVD2X (25,(4),(3)) + addi 4, 4, 16 + STXVD2X (26,(4),(3)) + addi 4, 4, 16 + STXVD2X (27,(4),(3)) + addi 4, 4, 16 + STXVD2X (28,(4),(3)) + addi 4, 4, 16 + STXVD2X (29,(4),(3)) + addi 4, 4, 16 + STXVD2X (30,(4),(3)) + addi 4, 4, 16 + STXVD2X (31,(4),(3)) + addi 4, 4, 16 + STXVD2X (32,(4),(3)) + addi 4, 4, 16 + STXVD2X (33,(4),(3)) + addi 4, 4, 16 + STXVD2X (34,(4),(3)) + addi 4, 4, 16 + STXVD2X (35,(4),(3)) + addi 4, 4, 16 + STXVD2X (36,(4),(3)) + addi 4, 4, 16 + STXVD2X (37,(4),(3)) + addi 4, 4, 16 + STXVD2X (38,(4),(3)) + addi 4, 4, 16 + STXVD2X (39,(4),(3)) + addi 4, 4, 16 + STXVD2X (40,(4),(3)) + addi 4, 4, 16 + STXVD2X (41,(4),(3)) + addi 4, 4, 16 + STXVD2X (42,(4),(3)) + addi 4, 4, 16 + STXVD2X (43,(4),(3)) + addi 4, 4, 16 + STXVD2X (44,(4),(3)) + addi 4, 4, 16 + STXVD2X (45,(4),(3)) + addi 4, 4, 16 + STXVD2X (46,(4),(3)) + addi 4, 4, 16 + STXVD2X (47,(4),(3)) + addi 4, 4, 16 + STXVD2X (48,(4),(3)) + addi 4, 4, 16 + STXVD2X (49,(4),(3)) + addi 4, 4, 16 + STXVD2X (50,(4),(3)) + addi 4, 4, 16 + STXVD2X (51,(4),(3)) + addi 4, 4, 16 + STXVD2X (52,(4),(3)) + addi 4, 4, 16 + STXVD2X (53,(4),(3)) + addi 4, 4, 16 + STXVD2X (54,(4),(3)) + addi 4, 4, 16 + STXVD2X (55,(4),(3)) + addi 4, 4, 16 + STXVD2X (56,(4),(3)) + addi 4, 4, 16 + STXVD2X (57,(4),(3)) + addi 4, 4, 16 + STXVD2X (58,(4),(3)) + addi 4, 4, 16 + STXVD2X (59,(4),(3)) + addi 4, 4, 16 + STXVD2X (60,(4),(3)) + addi 4, 4, 16 + STXVD2X (61,(4),(3)) + addi 4, 4, 16 + STXVD2X (62,(4),(3)) + addi 4, 4, 16 + STXVD2X (63,(4),(3)) + blr +FUNC_END(storevsx) diff --git a/tools/testing/selftests/powerpc/math/fpu_asm.S b/tools/testing/selftests/powerpc/math/fpu_asm.S index 241f067..8a04bb1 100644 --- a/tools/testing/selftests/powerpc/math/fpu_asm.S +++ b/tools/testing/selftests/powerpc/math/fpu_asm.S @@ -7,8 +7,8 @@ * 2 of the License, or (at your option) any later version. */ -#include "../basic_asm.h" -#include "../fpu_asm.h" +#include "basic_asm.h" +#include "fpu_asm.h" FUNC_START(check_fpu) mr r4,r3 diff --git a/tools/testing/selftests/powerpc/math/vmx_asm.S b/tools/testing/selftests/powerpc/math/vmx_asm.S index fd74da4..cb1e5ae 100644 --- a/tools/testing/selftests/powerpc/math/vmx_asm.S +++ b/tools/testing/selftests/powerpc/math/vmx_asm.S @@ -7,8 +7,8 @@ * 2 of the License, or (at your option) any later version. */ -#include "../basic_asm.h" -#include "../vmx_asm.h" +#include "basic_asm.h" +#include "vmx_asm.h" # Should be safe from C, only touches r4, r5 and v0,v1,v2 FUNC_START(check_vmx) diff --git a/tools/testing/selftests/powerpc/math/vsx_asm.S b/tools/testing/selftests/powerpc/math/vsx_asm.S index a110dd8..8f431f6 100644 --- a/tools/testing/selftests/powerpc/math/vsx_asm.S +++ b/tools/testing/selftests/powerpc/math/vsx_asm.S @@ -7,8 +7,8 @@ * 2 of the License, or (at your option) any later version. */ -#include "../basic_asm.h" -#include "../vsx_asm.h" +#include "basic_asm.h" +#include "vsx_asm.h" #long check_vsx(vector int *r3); #This function wraps storeing VSX regs to the end of an array and a diff --git a/tools/testing/selftests/powerpc/pmu/ebb/.gitignore b/tools/testing/selftests/powerpc/pmu/ebb/.gitignore index 44b7df1..42bddbe 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/.gitignore +++ b/tools/testing/selftests/powerpc/pmu/ebb/.gitignore @@ -20,5 +20,3 @@ back_to_back_ebbs_test lost_exception_test no_handler_test cycles_with_mmcr2_test -ebb_lmr -ebb_lmr_regs
\ No newline at end of file diff --git a/tools/testing/selftests/powerpc/pmu/ebb/Makefile b/tools/testing/selftests/powerpc/pmu/ebb/Makefile index 6b0453e..8d2279c4 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/Makefile +++ b/tools/testing/selftests/powerpc/pmu/ebb/Makefile @@ -14,7 +14,7 @@ TEST_PROGS := reg_access_test event_attributes_test cycles_test \ fork_cleanup_test ebb_on_child_test \ ebb_on_willing_child_test back_to_back_ebbs_test \ lost_exception_test no_handler_test \ - cycles_with_mmcr2_test ebb_lmr ebb_lmr_regs + cycles_with_mmcr2_test all: $(TEST_PROGS) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c deleted file mode 100644 index c47ebd5..0000000 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Copyright 2016, Jack Miller, IBM Corp. - * Licensed under GPLv2. - */ - -#include <stdlib.h> -#include <stdio.h> - -#include "ebb.h" -#include "ebb_lmr.h" - -#define SIZE (32 * 1024 * 1024) /* 32M */ -#define LM_SIZE 0 /* Smallest encoding, 32M */ - -#define SECTIONS 64 /* 1 per bit in LMSER */ -#define SECTION_SIZE (SIZE / SECTIONS) -#define SECTION_LONGS (SECTION_SIZE / sizeof(long)) - -static unsigned long *test_mem; - -static int lmr_count = 0; - -void ebb_lmr_handler(void) -{ - lmr_count++; -} - -void ldmx_full_section(unsigned long *mem, int section) -{ - unsigned long *ptr; - int i; - - for (i = 0; i < SECTION_LONGS; i++) { - ptr = &mem[(SECTION_LONGS * section) + i]; - ldmx((unsigned long) &ptr); - ebb_lmr_reset(); - } -} - -unsigned long section_masks[] = { - 0x8000000000000000, - 0xFF00000000000000, - 0x0000000F70000000, - 0x8000000000000001, - 0xF0F0F0F0F0F0F0F0, - 0x0F0F0F0F0F0F0F0F, - 0x0 -}; - -int ebb_lmr_section_test(unsigned long *mem) -{ - unsigned long *mask = section_masks; - int i; - - for (; *mask; mask++) { - mtspr(SPRN_LMSER, *mask); - printf("Testing mask 0x%016lx\n", mfspr(SPRN_LMSER)); - - for (i = 0; i < 64; i++) { - lmr_count = 0; - ldmx_full_section(mem, i); - if (*mask & (1UL << (63 - i))) - FAIL_IF(lmr_count != SECTION_LONGS); - else - FAIL_IF(lmr_count); - } - } - - return 0; -} - -int ebb_lmr(void) -{ - int i; - - SKIP_IF(!lmr_is_supported()); - - setup_ebb_handler(ebb_lmr_handler); - - ebb_global_enable(); - - FAIL_IF(posix_memalign((void **)&test_mem, SIZE, SIZE) != 0); - - mtspr(SPRN_LMSER, 0); - - FAIL_IF(mfspr(SPRN_LMSER) != 0); - - mtspr(SPRN_LMRR, ((unsigned long)test_mem | LM_SIZE)); - - FAIL_IF(mfspr(SPRN_LMRR) != ((unsigned long)test_mem | LM_SIZE)); - - /* Read every single byte to ensure we get no false positives */ - for (i = 0; i < SECTIONS; i++) - ldmx_full_section(test_mem, i); - - FAIL_IF(lmr_count != 0); - - /* Turn on the first section */ - - mtspr(SPRN_LMSER, (1UL << 63)); - FAIL_IF(mfspr(SPRN_LMSER) != (1UL << 63)); - - /* Enable LM (BESCR) */ - - mtspr(SPRN_BESCR, mfspr(SPRN_BESCR) | BESCR_LME); - FAIL_IF(!(mfspr(SPRN_BESCR) & BESCR_LME)); - - ldmx((unsigned long)&test_mem); - - FAIL_IF(lmr_count != 1); // exactly one exception - FAIL_IF(mfspr(SPRN_BESCR) & BESCR_LME); // LM now disabled - FAIL_IF(!(mfspr(SPRN_BESCR) & BESCR_LMEO)); // occurred bit set - - printf("Simple LMR EBB OK\n"); - - /* This shouldn't cause an EBB since it's been disabled */ - ldmx((unsigned long)&test_mem); - FAIL_IF(lmr_count != 1); - - printf("LMR disable on EBB OK\n"); - - ebb_lmr_reset(); - - /* This should cause an EBB or reset is broken */ - ldmx((unsigned long)&test_mem); - FAIL_IF(lmr_count != 2); - - printf("LMR reset EBB OK\n"); - - ebb_lmr_reset(); - - return ebb_lmr_section_test(test_mem); -} - -int main(void) -{ - int ret = test_harness(ebb_lmr, "ebb_lmr"); - - if (test_mem) - free(test_mem); - - return ret; -} diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h deleted file mode 100644 index ef50abd..0000000 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h +++ /dev/null @@ -1,39 +0,0 @@ -#ifndef _SELFTESTS_POWERPC_PMU_EBB_LMR_H -#define _SELFTESTS_POWERPC_PMU_EBB_LMR_H - -#include "reg.h" - -#ifndef PPC_FEATURE2_ARCH_3_00 -#define PPC_FEATURE2_ARCH_3_00 0x00800000 -#endif - -#define lmr_is_supported() have_hwcap2(PPC_FEATURE2_ARCH_3_00) - -static inline void ebb_lmr_reset(void) -{ - unsigned long bescr = mfspr(SPRN_BESCR); - bescr &= ~(BESCR_LMEO); - bescr |= BESCR_LME; - mtspr(SPRN_BESCR, bescr); -} - -#define LDMX(t, a, b)\ - (0x7c00026a | \ - (((t) & 0x1f) << 21) | \ - (((a) & 0x1f) << 16) | \ - (((b) & 0x1f) << 11)) - -static inline unsigned long ldmx(unsigned long address) -{ - unsigned long ret; - - asm volatile ("mr 9, %1\r\n" - ".long " __stringify(LDMX(9, 0, 9)) "\r\n" - "mr %0, 9\r\n":"=r"(ret) - :"r"(address) - :"r9"); - - return ret; -} - -#endif diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c deleted file mode 100644 index aff4241..0000000 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright 2016, Jack Miller, IBM Corp. - * Licensed under GPLv2. - */ - -#include <stdlib.h> -#include <stdio.h> -#include <unistd.h> - -#include "ebb.h" -#include "ebb_lmr.h" - -#define CHECKS 10000 - -int ebb_lmr_regs(void) -{ - int i; - - SKIP_IF(!lmr_is_supported()); - - ebb_global_enable(); - - for (i = 0; i < CHECKS; i++) { - mtspr(SPRN_LMRR, i << 25); // skip size and rsvd bits - mtspr(SPRN_LMSER, i); - - FAIL_IF(mfspr(SPRN_LMRR) != (i << 25)); - FAIL_IF(mfspr(SPRN_LMSER) != i); - } - - return 0; -} - -int main(void) -{ - return test_harness(ebb_lmr_regs, "ebb_lmr_regs"); -} diff --git a/tools/testing/selftests/powerpc/pmu/lib.c b/tools/testing/selftests/powerpc/pmu/lib.c index 8b992fa..5bf5dd4 100644 --- a/tools/testing/selftests/powerpc/pmu/lib.c +++ b/tools/testing/selftests/powerpc/pmu/lib.c @@ -193,9 +193,9 @@ bool require_paranoia_below(int level) long current; char *end, buf[16]; FILE *f; - int rc; + bool rc; - rc = -1; + rc = false; f = fopen(PARANOID_PATH, "r"); if (!f) { @@ -218,7 +218,7 @@ bool require_paranoia_below(int level) if (current >= level) goto out_close; - rc = 0; + rc = true; out_close: fclose(f); out: diff --git a/tools/testing/selftests/powerpc/primitives/asm/firmware.h b/tools/testing/selftests/powerpc/primitives/asm/firmware.h new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/asm/firmware.h diff --git a/tools/testing/selftests/powerpc/primitives/asm/ppc_asm.h b/tools/testing/selftests/powerpc/primitives/asm/ppc_asm.h new file mode 120000 index 0000000..66c81932 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/asm/ppc_asm.h @@ -0,0 +1 @@ +../../../../../../arch/powerpc/include/asm/ppc_asm.h
\ No newline at end of file diff --git a/tools/testing/selftests/powerpc/primitives/asm/processor.h b/tools/testing/selftests/powerpc/primitives/asm/processor.h new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/asm/processor.h diff --git a/tools/testing/selftests/powerpc/primitives/linux/stringify.h b/tools/testing/selftests/powerpc/primitives/linux/stringify.h new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/linux/stringify.h diff --git a/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c b/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c index 6cae061..ed3239b 100644 --- a/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c +++ b/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c @@ -73,20 +73,23 @@ extern char __stop___ex_table[]; #error implement UCONTEXT_NIA #endif -static int segv_error; +struct extbl_entry { + int insn; + int fixup; +}; static void segv_handler(int signr, siginfo_t *info, void *ptr) { ucontext_t *uc = (ucontext_t *)ptr; unsigned long addr = (unsigned long)info->si_addr; unsigned long *ip = &UCONTEXT_NIA(uc); - unsigned long *ex_p = (unsigned long *)__start___ex_table; + struct extbl_entry *entry = (struct extbl_entry *)__start___ex_table; - while (ex_p < (unsigned long *)__stop___ex_table) { + while (entry < (struct extbl_entry *)__stop___ex_table) { unsigned long insn, fixup; - insn = *ex_p++; - fixup = *ex_p++; + insn = (unsigned long)&entry->insn + entry->insn; + fixup = (unsigned long)&entry->fixup + entry->fixup; if (insn == *ip) { *ip = fixup; @@ -95,7 +98,7 @@ static void segv_handler(int signr, siginfo_t *info, void *ptr) } printf("No exception table match for NIA %lx ADDR %lx\n", *ip, addr); - segv_error++; + abort(); } static void setup_segv_handler(void) @@ -119,8 +122,10 @@ static int do_one_test(char *p, int page_offset) got = load_unaligned_zeropad(p); - if (should != got) + if (should != got) { printf("offset %u load_unaligned_zeropad returned 0x%lx, should be 0x%lx\n", page_offset, got, should); + return 1; + } return 0; } @@ -145,8 +150,6 @@ static int test_body(void) for (i = 0; i < page_size; i++) FAIL_IF(do_one_test(mem_region+i, i)); - FAIL_IF(segv_error); - return 0; } diff --git a/tools/testing/selftests/powerpc/ptrace/.gitignore b/tools/testing/selftests/powerpc/ptrace/.gitignore new file mode 100644 index 0000000..349acfa --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/.gitignore @@ -0,0 +1,10 @@ +ptrace-gpr +ptrace-tm-gpr +ptrace-tm-spd-gpr +ptrace-tar +ptrace-tm-tar +ptrace-tm-spd-tar +ptrace-vsx +ptrace-tm-vsx +ptrace-tm-spd-vsx +ptrace-tm-spr diff --git a/tools/testing/selftests/powerpc/ptrace/Makefile b/tools/testing/selftests/powerpc/ptrace/Makefile new file mode 100644 index 0000000..fe6bc60 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/Makefile @@ -0,0 +1,14 @@ +TEST_PROGS := ptrace-gpr ptrace-tm-gpr ptrace-tm-spd-gpr \ + ptrace-tar ptrace-tm-tar ptrace-tm-spd-tar ptrace-vsx ptrace-tm-vsx \ + ptrace-tm-spd-vsx ptrace-tm-spr + +include ../../lib.mk + +all: $(TEST_PROGS) + +CFLAGS += -m64 -I../../../../../usr/include -I../tm -mhtm + +$(TEST_PROGS): ../harness.c ../utils.c ../lib/reg.S ptrace.h + +clean: + rm -f $(TEST_PROGS) *.o diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c new file mode 100644 index 0000000..0b4ebcc --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c @@ -0,0 +1,123 @@ +/* + * Ptrace test for GPR/FPR registers + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "ptrace-gpr.h" +#include "reg.h" + +/* Tracer and Tracee Shared Data */ +int shm_id; +int *cptr, *pptr; + +float a = FPR_1; +float b = FPR_2; +float c = FPR_3; + +void gpr(void) +{ + unsigned long gpr_buf[18]; + float fpr_buf[32]; + + cptr = (int *)shmat(shm_id, NULL, 0); + + asm __volatile__( + ASM_LOAD_GPR_IMMED(gpr_1) + ASM_LOAD_FPR_SINGLE_PRECISION(flt_1) + : + : [gpr_1]"i"(GPR_1), [flt_1] "r" (&a) + : "memory", "r6", "r7", "r8", "r9", "r10", + "r11", "r12", "r13", "r14", "r15", "r16", "r17", + "r18", "r19", "r20", "r21", "r22", "r23", "r24", + "r25", "r26", "r27", "r28", "r29", "r30", "r31" + ); + + cptr[1] = 1; + + while (!cptr[0]) + asm volatile("" : : : "memory"); + + shmdt((void *)cptr); + store_gpr(gpr_buf); + store_fpr_single_precision(fpr_buf); + + if (validate_gpr(gpr_buf, GPR_3)) + exit(1); + + if (validate_fpr_float(fpr_buf, c)) + exit(1); + + exit(0); +} + +int trace_gpr(pid_t child) +{ + unsigned long gpr[18]; + unsigned long fpr[32]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_gpr(child, gpr)); + FAIL_IF(validate_gpr(gpr, GPR_1)); + FAIL_IF(show_fpr(child, fpr)); + FAIL_IF(validate_fpr(fpr, FPR_1_REP)); + FAIL_IF(write_gpr(child, GPR_3)); + FAIL_IF(write_fpr(child, FPR_3_REP)); + FAIL_IF(stop_trace(child)); + + return TEST_PASS; +} + +int ptrace_gpr(void) +{ + pid_t pid; + int ret, status; + + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + if (pid == 0) + gpr(); + + if (pid) { + pptr = (int *)shmat(shm_id, NULL, 0); + while (!pptr[1]) + asm volatile("" : : : "memory"); + + ret = trace_gpr(pid); + if (ret) { + kill(pid, SIGTERM); + shmdt((void *)pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + + pptr[0] = 1; + shmdt((void *)pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_gpr, "ptrace_gpr"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.h b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.h new file mode 100644 index 0000000..e30fef6 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#define GPR_1 1 +#define GPR_2 2 +#define GPR_3 3 +#define GPR_4 4 + +#define FPR_1 0.001 +#define FPR_2 0.002 +#define FPR_3 0.003 +#define FPR_4 0.004 + +#define FPR_1_REP 0x3f50624de0000000 +#define FPR_2_REP 0x3f60624de0000000 +#define FPR_3_REP 0x3f689374c0000000 +#define FPR_4_REP 0x3f70624de0000000 + +/* Buffer must have 18 elements */ +int validate_gpr(unsigned long *gpr, unsigned long val) +{ + int i, found = 1; + + for (i = 0; i < 18; i++) { + if (gpr[i] != val) { + printf("GPR[%d]: %lx Expected: %lx\n", + i+14, gpr[i], val); + found = 0; + } + } + + if (!found) + return TEST_FAIL; + return TEST_PASS; +} + +/* Buffer must have 32 elements */ +int validate_fpr(unsigned long *fpr, unsigned long val) +{ + int i, found = 1; + + for (i = 0; i < 32; i++) { + if (fpr[i] != val) { + printf("FPR[%d]: %lx Expected: %lx\n", i, fpr[i], val); + found = 0; + } + } + + if (!found) + return TEST_FAIL; + return TEST_PASS; +} + +/* Buffer must have 32 elements */ +int validate_fpr_float(float *fpr, float val) +{ + int i, found = 1; + + for (i = 0; i < 32; i++) { + if (fpr[i] != val) { + printf("FPR[%d]: %f Expected: %f\n", i, fpr[i], val); + found = 0; + } + } + + if (!found) + return TEST_FAIL; + return TEST_PASS; +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tar.c new file mode 100644 index 0000000..f9b5069 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tar.c @@ -0,0 +1,135 @@ +/* + * Ptrace test for TAR, PPR, DSCR registers + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "ptrace-tar.h" + +/* Tracer and Tracee Shared Data */ +int shm_id; +int *cptr; +int *pptr; + +void tar(void) +{ + unsigned long reg[3]; + int ret; + + cptr = (int *)shmat(shm_id, NULL, 0); + printf("%-30s TAR: %u PPR: %lx DSCR: %u\n", + user_write, TAR_1, PPR_1, DSCR_1); + + mtspr(SPRN_TAR, TAR_1); + mtspr(SPRN_PPR, PPR_1); + mtspr(SPRN_DSCR, DSCR_1); + + cptr[2] = 1; + + /* Wait on parent */ + while (!cptr[0]) + asm volatile("" : : : "memory"); + + reg[0] = mfspr(SPRN_TAR); + reg[1] = mfspr(SPRN_PPR); + reg[2] = mfspr(SPRN_DSCR); + + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + user_read, reg[0], reg[1], reg[2]); + + /* Unblock the parent now */ + cptr[1] = 1; + shmdt((int *)cptr); + + ret = validate_tar_registers(reg, TAR_2, PPR_2, DSCR_2); + if (ret) + exit(1); + exit(0); +} + +int trace_tar(pid_t child) +{ + unsigned long reg[3]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_tar_registers(child, reg)); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + ptrace_read_running, reg[0], reg[1], reg[2]); + + FAIL_IF(validate_tar_registers(reg, TAR_1, PPR_1, DSCR_1)); + FAIL_IF(stop_trace(child)); + return TEST_PASS; +} + +int trace_tar_write(pid_t child) +{ + FAIL_IF(start_trace(child)); + FAIL_IF(write_tar_registers(child, TAR_2, PPR_2, DSCR_2)); + printf("%-30s TAR: %u PPR: %lx DSCR: %u\n", + ptrace_write_running, TAR_2, PPR_2, DSCR_2); + + FAIL_IF(stop_trace(child)); + return TEST_PASS; +} + +int ptrace_tar(void) +{ + pid_t pid; + int ret, status; + + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT); + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + + if (pid == 0) + tar(); + + if (pid) { + pptr = (int *)shmat(shm_id, NULL, 0); + pptr[0] = 0; + pptr[1] = 0; + + while (!pptr[2]) + asm volatile("" : : : "memory"); + ret = trace_tar(pid); + if (ret) + return ret; + + ret = trace_tar_write(pid); + if (ret) + return ret; + + /* Unblock the child now */ + pptr[0] = 1; + + /* Wait on child */ + while (!pptr[1]) + asm volatile("" : : : "memory"); + + shmdt((int *)pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_PASS; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tar, "ptrace_tar"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tar.h b/tools/testing/selftests/powerpc/ptrace/ptrace-tar.h new file mode 100644 index 0000000..aed0aac --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tar.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#define TAR_1 10 +#define TAR_2 20 +#define TAR_3 30 +#define TAR_4 40 +#define TAR_5 50 + +#define DSCR_1 100 +#define DSCR_2 200 +#define DSCR_3 300 +#define DSCR_4 400 +#define DSCR_5 500 + +#define PPR_1 0x4000000000000 /* or 31,31,31*/ +#define PPR_2 0x8000000000000 /* or 1,1,1 */ +#define PPR_3 0xc000000000000 /* or 6,6,6 */ +#define PPR_4 0x10000000000000 /* or 2,2,2 */ + +char *user_read = "[User Read (Running)]"; +char *user_write = "[User Write (Running)]"; +char *ptrace_read_running = "[Ptrace Read (Running)]"; +char *ptrace_write_running = "[Ptrace Write (Running)]"; +char *ptrace_read_ckpt = "[Ptrace Read (Checkpointed)]"; +char *ptrace_write_ckpt = "[Ptrace Write (Checkpointed)]"; + +int validate_tar_registers(unsigned long *reg, unsigned long tar, + unsigned long ppr, unsigned long dscr) +{ + int match = 1; + + if (reg[0] != tar) + match = 0; + + if (reg[1] != ppr) + match = 0; + + if (reg[2] != dscr) + match = 0; + + if (!match) + return TEST_FAIL; + return TEST_PASS; +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c new file mode 100644 index 0000000..59206b9 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c @@ -0,0 +1,158 @@ +/* + * Ptrace test for GPR/FPR registers in TM context + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "ptrace-gpr.h" +#include "tm.h" + +/* Tracer and Tracee Shared Data */ +int shm_id; +unsigned long *cptr, *pptr; + +float a = FPR_1; +float b = FPR_2; +float c = FPR_3; + +void tm_gpr(void) +{ + unsigned long gpr_buf[18]; + unsigned long result, texasr; + float fpr_buf[32]; + + printf("Starting the child\n"); + cptr = (unsigned long *)shmat(shm_id, NULL, 0); + +trans: + cptr[1] = 0; + asm __volatile__( + ASM_LOAD_GPR_IMMED(gpr_1) + ASM_LOAD_FPR_SINGLE_PRECISION(flt_1) + "1: ;" + "tbegin.;" + "beq 2f;" + ASM_LOAD_GPR_IMMED(gpr_2) + ASM_LOAD_FPR_SINGLE_PRECISION(flt_2) + "tsuspend.;" + "li 7, 1;" + "stw 7, 0(%[cptr1]);" + "tresume.;" + "b .;" + + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + /* Transaction abort handler */ + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + : [res] "=r" (result), [texasr] "=r" (texasr) + : [gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2), + [sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "r" (&a), + [flt_2] "r" (&b), [cptr1] "r" (&cptr[1]) + : "memory", "r7", "r8", "r9", "r10", + "r11", "r12", "r13", "r14", "r15", "r16", + "r17", "r18", "r19", "r20", "r21", "r22", + "r23", "r24", "r25", "r26", "r27", "r28", + "r29", "r30", "r31" + ); + + if (result) { + if (!cptr[0]) + goto trans; + + shmdt((void *)cptr); + store_gpr(gpr_buf); + store_fpr_single_precision(fpr_buf); + + if (validate_gpr(gpr_buf, GPR_3)) + exit(1); + + if (validate_fpr_float(fpr_buf, c)) + exit(1); + + exit(0); + } + shmdt((void *)cptr); + exit(1); +} + +int trace_tm_gpr(pid_t child) +{ + unsigned long gpr[18]; + unsigned long fpr[32]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_gpr(child, gpr)); + FAIL_IF(validate_gpr(gpr, GPR_2)); + FAIL_IF(show_fpr(child, fpr)); + FAIL_IF(validate_fpr(fpr, FPR_2_REP)); + FAIL_IF(show_ckpt_fpr(child, fpr)); + FAIL_IF(validate_fpr(fpr, FPR_1_REP)); + FAIL_IF(show_ckpt_gpr(child, gpr)); + FAIL_IF(validate_gpr(gpr, GPR_1)); + FAIL_IF(write_ckpt_gpr(child, GPR_3)); + FAIL_IF(write_ckpt_fpr(child, FPR_3_REP)); + + pptr[0] = 1; + FAIL_IF(stop_trace(child)); + + return TEST_PASS; +} + +int ptrace_tm_gpr(void) +{ + pid_t pid; + int ret, status; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + if (pid == 0) + tm_gpr(); + + if (pid) { + pptr = (unsigned long *)shmat(shm_id, NULL, 0); + + while (!pptr[1]) + asm volatile("" : : : "memory"); + ret = trace_tm_gpr(pid); + if (ret) { + kill(pid, SIGTERM); + return TEST_FAIL; + } + + shmdt((void *)pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_gpr, "ptrace_tm_gpr"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c new file mode 100644 index 0000000..327fa94 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c @@ -0,0 +1,169 @@ +/* + * Ptrace test for GPR/FPR registers in TM Suspend context + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "ptrace-gpr.h" +#include "tm.h" + +/* Tracer and Tracee Shared Data */ +int shm_id; +int *cptr, *pptr; + +float a = FPR_1; +float b = FPR_2; +float c = FPR_3; +float d = FPR_4; + +__attribute__((used)) void wait_parent(void) +{ + cptr[2] = 1; + while (!cptr[1]) + asm volatile("" : : : "memory"); +} + +void tm_spd_gpr(void) +{ + unsigned long gpr_buf[18]; + unsigned long result, texasr; + float fpr_buf[32]; + + cptr = (int *)shmat(shm_id, NULL, 0); + +trans: + cptr[2] = 0; + asm __volatile__( + ASM_LOAD_GPR_IMMED(gpr_1) + ASM_LOAD_FPR_SINGLE_PRECISION(flt_1) + + "1: ;" + "tbegin.;" + "beq 2f;" + + ASM_LOAD_GPR_IMMED(gpr_2) + "tsuspend.;" + ASM_LOAD_GPR_IMMED(gpr_4) + ASM_LOAD_FPR_SINGLE_PRECISION(flt_4) + + "bl wait_parent;" + "tresume.;" + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + /* Transaction abort handler */ + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + : [res] "=r" (result), [texasr] "=r" (texasr) + : [gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2), [gpr_4]"i"(GPR_4), + [sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "r" (&a), + [flt_2] "r" (&b), [flt_4] "r" (&d) + : "memory", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" + ); + + if (result) { + if (!cptr[0]) + goto trans; + + shmdt((void *)cptr); + store_gpr(gpr_buf); + store_fpr_single_precision(fpr_buf); + + if (validate_gpr(gpr_buf, GPR_3)) + exit(1); + + if (validate_fpr_float(fpr_buf, c)) + exit(1); + exit(0); + } + shmdt((void *)cptr); + exit(1); +} + +int trace_tm_spd_gpr(pid_t child) +{ + unsigned long gpr[18]; + unsigned long fpr[32]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_gpr(child, gpr)); + FAIL_IF(validate_gpr(gpr, GPR_4)); + FAIL_IF(show_fpr(child, fpr)); + FAIL_IF(validate_fpr(fpr, FPR_4_REP)); + FAIL_IF(show_ckpt_fpr(child, fpr)); + FAIL_IF(validate_fpr(fpr, FPR_1_REP)); + FAIL_IF(show_ckpt_gpr(child, gpr)); + FAIL_IF(validate_gpr(gpr, GPR_1)); + FAIL_IF(write_ckpt_gpr(child, GPR_3)); + FAIL_IF(write_ckpt_fpr(child, FPR_3_REP)); + + pptr[0] = 1; + pptr[1] = 1; + FAIL_IF(stop_trace(child)); + return TEST_PASS; +} + +int ptrace_tm_spd_gpr(void) +{ + pid_t pid; + int ret, status; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT); + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + + if (pid == 0) + tm_spd_gpr(); + + if (pid) { + pptr = (int *)shmat(shm_id, NULL, 0); + pptr[0] = 0; + pptr[1] = 0; + + while (!pptr[2]) + asm volatile("" : : : "memory"); + ret = trace_tm_spd_gpr(pid); + if (ret) { + kill(pid, SIGTERM); + shmdt((void *)pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + + shmdt((void *)pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_spd_gpr, "ptrace_tm_spd_gpr"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c new file mode 100644 index 0000000..b3c061d --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c @@ -0,0 +1,174 @@ +/* + * Ptrace test for TAR, PPR, DSCR registers in the TM Suspend context + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "tm.h" +#include "ptrace-tar.h" + +int shm_id; +int *cptr, *pptr; + +__attribute__((used)) void wait_parent(void) +{ + cptr[2] = 1; + while (!cptr[1]) + asm volatile("" : : : "memory"); +} + +void tm_spd_tar(void) +{ + unsigned long result, texasr; + unsigned long regs[3]; + int ret; + + cptr = (int *)shmat(shm_id, NULL, 0); + +trans: + cptr[2] = 0; + asm __volatile__( + "li 4, %[tar_1];" + "mtspr %[sprn_tar], 4;" /* TAR_1 */ + "li 4, %[dscr_1];" + "mtspr %[sprn_dscr], 4;" /* DSCR_1 */ + "or 31,31,31;" /* PPR_1*/ + + "1: ;" + "tbegin.;" + "beq 2f;" + + "li 4, %[tar_2];" + "mtspr %[sprn_tar], 4;" /* TAR_2 */ + "li 4, %[dscr_2];" + "mtspr %[sprn_dscr], 4;" /* DSCR_2 */ + "or 1,1,1;" /* PPR_2 */ + + "tsuspend.;" + "li 4, %[tar_3];" + "mtspr %[sprn_tar], 4;" /* TAR_3 */ + "li 4, %[dscr_3];" + "mtspr %[sprn_dscr], 4;" /* DSCR_3 */ + "or 6,6,6;" /* PPR_3 */ + "bl wait_parent;" + "tresume.;" + + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + /* Transaction abort handler */ + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + + : [res] "=r" (result), [texasr] "=r" (texasr) + : [val] "r" (cptr[1]), [sprn_dscr]"i"(SPRN_DSCR), + [sprn_tar]"i"(SPRN_TAR), [sprn_ppr]"i"(SPRN_PPR), + [sprn_texasr]"i"(SPRN_TEXASR), [tar_1]"i"(TAR_1), + [dscr_1]"i"(DSCR_1), [tar_2]"i"(TAR_2), [dscr_2]"i"(DSCR_2), + [tar_3]"i"(TAR_3), [dscr_3]"i"(DSCR_3) + : "memory", "r0", "r1", "r3", "r4", "r5", "r6" + ); + + /* TM failed, analyse */ + if (result) { + if (!cptr[0]) + goto trans; + + regs[0] = mfspr(SPRN_TAR); + regs[1] = mfspr(SPRN_PPR); + regs[2] = mfspr(SPRN_DSCR); + + shmdt(&cptr); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + user_read, regs[0], regs[1], regs[2]); + + ret = validate_tar_registers(regs, TAR_4, PPR_4, DSCR_4); + if (ret) + exit(1); + exit(0); + } + shmdt(&cptr); + exit(1); +} + +int trace_tm_spd_tar(pid_t child) +{ + unsigned long regs[3]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_tar_registers(child, regs)); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + ptrace_read_running, regs[0], regs[1], regs[2]); + + FAIL_IF(validate_tar_registers(regs, TAR_3, PPR_3, DSCR_3)); + FAIL_IF(show_tm_checkpointed_state(child, regs)); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + ptrace_read_ckpt, regs[0], regs[1], regs[2]); + + FAIL_IF(validate_tar_registers(regs, TAR_1, PPR_1, DSCR_1)); + FAIL_IF(write_ckpt_tar_registers(child, TAR_4, PPR_4, DSCR_4)); + printf("%-30s TAR: %u PPR: %lx DSCR: %u\n", + ptrace_write_ckpt, TAR_4, PPR_4, DSCR_4); + + pptr[0] = 1; + pptr[1] = 1; + FAIL_IF(stop_trace(child)); + return TEST_PASS; +} + +int ptrace_tm_spd_tar(void) +{ + pid_t pid; + int ret, status; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT); + pid = fork(); + if (pid == 0) + tm_spd_tar(); + + pptr = (int *)shmat(shm_id, NULL, 0); + pptr[0] = 0; + pptr[1] = 0; + + if (pid) { + while (!pptr[2]) + asm volatile("" : : : "memory"); + ret = trace_tm_spd_tar(pid); + if (ret) { + kill(pid, SIGTERM); + shmdt(&pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + + shmdt(&pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_spd_tar, "ptrace_tm_spd_tar"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c new file mode 100644 index 0000000..0df3c23 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c @@ -0,0 +1,185 @@ +/* + * Ptrace test for VMX/VSX registers in the TM Suspend context + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "tm.h" +#include "ptrace-vsx.h" + +int shm_id; +int *cptr, *pptr; + +unsigned long fp_load[VEC_MAX]; +unsigned long fp_load_new[VEC_MAX]; +unsigned long fp_store[VEC_MAX]; +unsigned long fp_load_ckpt[VEC_MAX]; +unsigned long fp_load_ckpt_new[VEC_MAX]; + +__attribute__((used)) void load_vsx(void) +{ + loadvsx(fp_load, 0); +} + +__attribute__((used)) void load_vsx_new(void) +{ + loadvsx(fp_load_new, 0); +} + +__attribute__((used)) void load_vsx_ckpt(void) +{ + loadvsx(fp_load_ckpt, 0); +} + +__attribute__((used)) void wait_parent(void) +{ + cptr[2] = 1; + while (!cptr[1]) + asm volatile("" : : : "memory"); +} + +void tm_spd_vsx(void) +{ + unsigned long result, texasr; + int ret; + + cptr = (int *)shmat(shm_id, NULL, 0); + +trans: + cptr[2] = 0; + asm __volatile__( + "bl load_vsx_ckpt;" + + "1: ;" + "tbegin.;" + "beq 2f;" + + "bl load_vsx_new;" + "tsuspend.;" + "bl load_vsx;" + "bl wait_parent;" + "tresume.;" + + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + : [res] "=r" (result), [texasr] "=r" (texasr) + : [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt), + [sprn_texasr] "i" (SPRN_TEXASR) + : "memory", "r0", "r1", "r2", "r3", "r4", + "r8", "r9", "r10", "r11" + ); + + if (result) { + if (!cptr[0]) + goto trans; + shmdt((void *)cptr); + + storevsx(fp_store, 0); + ret = compare_vsx_vmx(fp_store, fp_load_ckpt_new); + if (ret) + exit(1); + exit(0); + } + shmdt((void *)cptr); + exit(1); +} + +int trace_tm_spd_vsx(pid_t child) +{ + unsigned long vsx[VSX_MAX]; + unsigned long vmx[VMX_MAX + 2][2]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_vsx(child, vsx)); + FAIL_IF(validate_vsx(vsx, fp_load)); + FAIL_IF(show_vmx(child, vmx)); + FAIL_IF(validate_vmx(vmx, fp_load)); + FAIL_IF(show_vsx_ckpt(child, vsx)); + FAIL_IF(validate_vsx(vsx, fp_load_ckpt)); + FAIL_IF(show_vmx_ckpt(child, vmx)); + FAIL_IF(validate_vmx(vmx, fp_load_ckpt)); + + memset(vsx, 0, sizeof(vsx)); + memset(vmx, 0, sizeof(vmx)); + + load_vsx_vmx(fp_load_ckpt_new, vsx, vmx); + + FAIL_IF(write_vsx_ckpt(child, vsx)); + FAIL_IF(write_vmx_ckpt(child, vmx)); + + pptr[0] = 1; + pptr[1] = 1; + FAIL_IF(stop_trace(child)); + + return TEST_PASS; +} + +int ptrace_tm_spd_vsx(void) +{ + pid_t pid; + int ret, status, i; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT); + + for (i = 0; i < 128; i++) { + fp_load[i] = 1 + rand(); + fp_load_new[i] = 1 + 2 * rand(); + fp_load_ckpt[i] = 1 + 3 * rand(); + fp_load_ckpt_new[i] = 1 + 4 * rand(); + } + + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + + if (pid == 0) + tm_spd_vsx(); + + if (pid) { + pptr = (int *)shmat(shm_id, NULL, 0); + while (!pptr[2]) + asm volatile("" : : : "memory"); + + ret = trace_tm_spd_vsx(pid); + if (ret) { + kill(pid, SIGKILL); + shmdt((void *)pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + + shmdt((void *)pptr); + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_spd_vsx, "ptrace_tm_spd_vsx"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c new file mode 100644 index 0000000..94e57cb --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spr.c @@ -0,0 +1,168 @@ +/* + * Ptrace test TM SPR registers + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "tm.h" + +/* Tracee and tracer shared data */ +struct shared { + int flag; + struct tm_spr_regs regs; +}; +unsigned long tfhar; + +int shm_id; +struct shared *cptr, *pptr; + +int shm_id1; +int *cptr1, *pptr1; + +#define TM_KVM_SCHED 0xe0000001ac000001 +int validate_tm_spr(struct tm_spr_regs *regs) +{ + FAIL_IF(regs->tm_tfhar != tfhar); + FAIL_IF((regs->tm_texasr == TM_KVM_SCHED) && (regs->tm_tfiar != 0)); + + return TEST_PASS; +} + +void tm_spr(void) +{ + unsigned long result, texasr; + int ret; + + cptr = (struct shared *)shmat(shm_id, NULL, 0); + cptr1 = (int *)shmat(shm_id1, NULL, 0); + +trans: + cptr1[0] = 0; + asm __volatile__( + "1: ;" + /* TM failover handler should follow "tbegin.;" */ + "mflr 31;" + "bl 4f;" /* $ = TFHAR - 12 */ + "4: ;" + "mflr %[tfhar];" + "mtlr 31;" + + "tbegin.;" + "beq 2f;" + + "tsuspend.;" + "li 8, 1;" + "sth 8, 0(%[cptr1]);" + "tresume.;" + "b .;" + + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + "2: ;" + + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + : [tfhar] "=r" (tfhar), [res] "=r" (result), + [texasr] "=r" (texasr), [cptr1] "=r" (cptr1) + : [sprn_texasr] "i" (SPRN_TEXASR) + : "memory", "r0", "r1", "r2", "r3", "r4", + "r8", "r9", "r10", "r11", "r31" + ); + + /* There are 2 32bit instructions before tbegin. */ + tfhar += 12; + + if (result) { + if (!cptr->flag) + goto trans; + + ret = validate_tm_spr((struct tm_spr_regs *)&cptr->regs); + shmdt((void *)cptr); + shmdt((void *)cptr1); + if (ret) + exit(1); + exit(0); + } + shmdt((void *)cptr); + shmdt((void *)cptr1); + exit(1); +} + +int trace_tm_spr(pid_t child) +{ + FAIL_IF(start_trace(child)); + FAIL_IF(show_tm_spr(child, (struct tm_spr_regs *)&pptr->regs)); + + printf("TFHAR: %lx TEXASR: %lx TFIAR: %lx\n", pptr->regs.tm_tfhar, + pptr->regs.tm_texasr, pptr->regs.tm_tfiar); + + pptr->flag = 1; + FAIL_IF(stop_trace(child)); + + return TEST_PASS; +} + +int ptrace_tm_spr(void) +{ + pid_t pid; + int ret, status; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(struct shared), 0777|IPC_CREAT); + shm_id1 = shmget(IPC_PRIVATE, sizeof(int), 0777|IPC_CREAT); + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + + if (pid == 0) + tm_spr(); + + if (pid) { + pptr = (struct shared *)shmat(shm_id, NULL, 0); + pptr1 = (int *)shmat(shm_id1, NULL, 0); + + while (!pptr1[0]) + asm volatile("" : : : "memory"); + ret = trace_tm_spr(pid); + if (ret) { + kill(pid, SIGKILL); + shmdt((void *)pptr); + shmdt((void *)pptr1); + shmctl(shm_id, IPC_RMID, NULL); + shmctl(shm_id1, IPC_RMID, NULL); + return TEST_FAIL; + } + + shmdt((void *)pptr); + shmdt((void *)pptr1); + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + shmctl(shm_id1, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_spr, "ptrace_tm_spr"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c new file mode 100644 index 0000000..48b462f --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c @@ -0,0 +1,160 @@ +/* + * Ptrace test for TAR, PPR, DSCR registers in the TM context + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "tm.h" +#include "ptrace-tar.h" + +int shm_id; +unsigned long *cptr, *pptr; + + +void tm_tar(void) +{ + unsigned long result, texasr; + unsigned long regs[3]; + int ret; + + cptr = (unsigned long *)shmat(shm_id, NULL, 0); + +trans: + cptr[1] = 0; + asm __volatile__( + "li 4, %[tar_1];" + "mtspr %[sprn_tar], 4;" /* TAR_1 */ + "li 4, %[dscr_1];" + "mtspr %[sprn_dscr], 4;" /* DSCR_1 */ + "or 31,31,31;" /* PPR_1*/ + + "1: ;" + "tbegin.;" + "beq 2f;" + + "li 4, %[tar_2];" + "mtspr %[sprn_tar], 4;" /* TAR_2 */ + "li 4, %[dscr_2];" + "mtspr %[sprn_dscr], 4;" /* DSCR_2 */ + "or 1,1,1;" /* PPR_2 */ + "tsuspend.;" + "li 0, 1;" + "stw 0, 0(%[cptr1]);" + "tresume.;" + "b .;" + + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + /* Transaction abort handler */ + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + + : [res] "=r" (result), [texasr] "=r" (texasr) + : [sprn_dscr]"i"(SPRN_DSCR), [sprn_tar]"i"(SPRN_TAR), + [sprn_ppr]"i"(SPRN_PPR), [sprn_texasr]"i"(SPRN_TEXASR), + [tar_1]"i"(TAR_1), [dscr_1]"i"(DSCR_1), [tar_2]"i"(TAR_2), + [dscr_2]"i"(DSCR_2), [cptr1] "r" (&cptr[1]) + : "memory", "r0", "r1", "r3", "r4", "r5", "r6" + ); + + /* TM failed, analyse */ + if (result) { + if (!cptr[0]) + goto trans; + + regs[0] = mfspr(SPRN_TAR); + regs[1] = mfspr(SPRN_PPR); + regs[2] = mfspr(SPRN_DSCR); + + shmdt(&cptr); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + user_read, regs[0], regs[1], regs[2]); + + ret = validate_tar_registers(regs, TAR_4, PPR_4, DSCR_4); + if (ret) + exit(1); + exit(0); + } + shmdt(&cptr); + exit(1); +} + +int trace_tm_tar(pid_t child) +{ + unsigned long regs[3]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_tar_registers(child, regs)); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + ptrace_read_running, regs[0], regs[1], regs[2]); + + FAIL_IF(validate_tar_registers(regs, TAR_2, PPR_2, DSCR_2)); + FAIL_IF(show_tm_checkpointed_state(child, regs)); + printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", + ptrace_read_ckpt, regs[0], regs[1], regs[2]); + + FAIL_IF(validate_tar_registers(regs, TAR_1, PPR_1, DSCR_1)); + FAIL_IF(write_ckpt_tar_registers(child, TAR_4, PPR_4, DSCR_4)); + printf("%-30s TAR: %u PPR: %lx DSCR: %u\n", + ptrace_write_ckpt, TAR_4, PPR_4, DSCR_4); + + pptr[0] = 1; + FAIL_IF(stop_trace(child)); + return TEST_PASS; +} + +int ptrace_tm_tar(void) +{ + pid_t pid; + int ret, status; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); + pid = fork(); + if (pid == 0) + tm_tar(); + + pptr = (unsigned long *)shmat(shm_id, NULL, 0); + pptr[0] = 0; + + if (pid) { + while (!pptr[1]) + asm volatile("" : : : "memory"); + ret = trace_tm_tar(pid); + if (ret) { + kill(pid, SIGTERM); + shmdt(&pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + shmdt(&pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_tar, "ptrace_tm_tar"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c new file mode 100644 index 0000000..b4081e2 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c @@ -0,0 +1,168 @@ +/* + * Ptrace test for VMX/VSX registers in the TM context + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "tm.h" +#include "ptrace-vsx.h" + +int shm_id; +unsigned long *cptr, *pptr; + +unsigned long fp_load[VEC_MAX]; +unsigned long fp_store[VEC_MAX]; +unsigned long fp_load_ckpt[VEC_MAX]; +unsigned long fp_load_ckpt_new[VEC_MAX]; + +__attribute__((used)) void load_vsx(void) +{ + loadvsx(fp_load, 0); +} + +__attribute__((used)) void load_vsx_ckpt(void) +{ + loadvsx(fp_load_ckpt, 0); +} + +void tm_vsx(void) +{ + unsigned long result, texasr; + int ret; + + cptr = (unsigned long *)shmat(shm_id, NULL, 0); + +trans: + cptr[1] = 0; + asm __volatile__( + "bl load_vsx_ckpt;" + + "1: ;" + "tbegin.;" + "beq 2f;" + + "bl load_vsx;" + "tsuspend.;" + "li 7, 1;" + "stw 7, 0(%[cptr1]);" + "tresume.;" + "b .;" + + "tend.;" + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + : [res] "=r" (result), [texasr] "=r" (texasr) + : [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt), + [sprn_texasr] "i" (SPRN_TEXASR), [cptr1] "r" (&cptr[1]) + : "memory", "r0", "r1", "r2", "r3", "r4", + "r7", "r8", "r9", "r10", "r11" + ); + + if (result) { + if (!cptr[0]) + goto trans; + + shmdt((void *)cptr); + storevsx(fp_store, 0); + ret = compare_vsx_vmx(fp_store, fp_load_ckpt_new); + if (ret) + exit(1); + exit(0); + } + shmdt((void *)cptr); + exit(1); +} + +int trace_tm_vsx(pid_t child) +{ + unsigned long vsx[VSX_MAX]; + unsigned long vmx[VMX_MAX + 2][2]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_vsx(child, vsx)); + FAIL_IF(validate_vsx(vsx, fp_load)); + FAIL_IF(show_vmx(child, vmx)); + FAIL_IF(validate_vmx(vmx, fp_load)); + FAIL_IF(show_vsx_ckpt(child, vsx)); + FAIL_IF(validate_vsx(vsx, fp_load_ckpt)); + FAIL_IF(show_vmx_ckpt(child, vmx)); + FAIL_IF(validate_vmx(vmx, fp_load_ckpt)); + memset(vsx, 0, sizeof(vsx)); + memset(vmx, 0, sizeof(vmx)); + + load_vsx_vmx(fp_load_ckpt_new, vsx, vmx); + + FAIL_IF(write_vsx_ckpt(child, vsx)); + FAIL_IF(write_vmx_ckpt(child, vmx)); + pptr[0] = 1; + FAIL_IF(stop_trace(child)); + return TEST_PASS; +} + +int ptrace_tm_vsx(void) +{ + pid_t pid; + int ret, status, i; + + SKIP_IF(!have_htm()); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); + + for (i = 0; i < 128; i++) { + fp_load[i] = 1 + rand(); + fp_load_ckpt[i] = 1 + 2 * rand(); + fp_load_ckpt_new[i] = 1 + 3 * rand(); + } + + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + + if (pid == 0) + tm_vsx(); + + if (pid) { + pptr = (unsigned long *)shmat(shm_id, NULL, 0); + while (!pptr[1]) + asm volatile("" : : : "memory"); + + ret = trace_tm_vsx(pid); + if (ret) { + kill(pid, SIGKILL); + shmdt((void *)pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + + shmdt((void *)pptr); + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_vsx, "ptrace_tm_vsx"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-vsx.c new file mode 100644 index 0000000..04084ee --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-vsx.c @@ -0,0 +1,117 @@ +/* + * Ptrace test for VMX/VSX registers + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include "ptrace.h" +#include "ptrace-vsx.h" + +/* Tracer and Tracee Shared Data */ +int shm_id; +int *cptr, *pptr; + +unsigned long fp_load[VEC_MAX]; +unsigned long fp_load_new[VEC_MAX]; +unsigned long fp_store[VEC_MAX]; + +void vsx(void) +{ + int ret; + + cptr = (int *)shmat(shm_id, NULL, 0); + loadvsx(fp_load, 0); + cptr[1] = 1; + + while (!cptr[0]) + asm volatile("" : : : "memory"); + shmdt((void *) cptr); + + storevsx(fp_store, 0); + ret = compare_vsx_vmx(fp_store, fp_load_new); + if (ret) + exit(1); + exit(0); +} + +int trace_vsx(pid_t child) +{ + unsigned long vsx[VSX_MAX]; + unsigned long vmx[VMX_MAX + 2][2]; + + FAIL_IF(start_trace(child)); + FAIL_IF(show_vsx(child, vsx)); + FAIL_IF(validate_vsx(vsx, fp_load)); + FAIL_IF(show_vmx(child, vmx)); + FAIL_IF(validate_vmx(vmx, fp_load)); + + memset(vsx, 0, sizeof(vsx)); + memset(vmx, 0, sizeof(vmx)); + load_vsx_vmx(fp_load_new, vsx, vmx); + + FAIL_IF(write_vsx(child, vsx)); + FAIL_IF(write_vmx(child, vmx)); + FAIL_IF(stop_trace(child)); + + return TEST_PASS; +} + +int ptrace_vsx(void) +{ + pid_t pid; + int ret, status, i; + + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); + + for (i = 0; i < VEC_MAX; i++) + fp_load[i] = i + rand(); + + for (i = 0; i < VEC_MAX; i++) + fp_load_new[i] = i + 2 * rand(); + + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + + if (pid == 0) + vsx(); + + if (pid) { + pptr = (int *)shmat(shm_id, NULL, 0); + while (!pptr[1]) + asm volatile("" : : : "memory"); + + ret = trace_vsx(pid); + if (ret) { + kill(pid, SIGTERM); + shmdt((void *)pptr); + shmctl(shm_id, IPC_RMID, NULL); + return TEST_FAIL; + } + + pptr[0] = 1; + shmdt((void *)pptr); + + ret = wait(&status); + shmctl(shm_id, IPC_RMID, NULL); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : + TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_vsx, "ptrace_vsx"); +} diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-vsx.h b/tools/testing/selftests/powerpc/ptrace/ptrace-vsx.h new file mode 100644 index 0000000..f4e4b42 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-vsx.h @@ -0,0 +1,127 @@ +/* + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#define VEC_MAX 128 +#define VSX_MAX 32 +#define VMX_MAX 32 + +/* + * unsigned long vsx[32] + * unsigned long load[128] + */ +int validate_vsx(unsigned long *vsx, unsigned long *load) +{ + int i; + + for (i = 0; i < VSX_MAX; i++) { + if (vsx[i] != load[2 * i + 1]) { + printf("vsx[%d]: %lx load[%d] %lx\n", + i, vsx[i], 2 * i + 1, load[2 * i + 1]); + return TEST_FAIL; + } + } + return TEST_PASS; +} + +/* + * unsigned long vmx[32][2] + * unsigned long load[128] + */ +int validate_vmx(unsigned long vmx[][2], unsigned long *load) +{ + int i; + + for (i = 0; i < VMX_MAX; i++) { + #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + if ((vmx[i][0] != load[64 + 2 * i]) || + (vmx[i][1] != load[65 + 2 * i])) { + printf("vmx[%d][0]: %lx load[%d] %lx\n", + i, vmx[i][0], 64 + 2 * i, + load[64 + 2 * i]); + printf("vmx[%d][1]: %lx load[%d] %lx\n", + i, vmx[i][1], 65 + 2 * i, + load[65 + 2 * i]); + return TEST_FAIL; + } + #else /* + * In LE each value pair is stored in an + * alternate manner. + */ + if ((vmx[i][0] != load[65 + 2 * i]) || + (vmx[i][1] != load[64 + 2 * i])) { + printf("vmx[%d][0]: %lx load[%d] %lx\n", + i, vmx[i][0], 65 + 2 * i, + load[65 + 2 * i]); + printf("vmx[%d][1]: %lx load[%d] %lx\n", + i, vmx[i][1], 64 + 2 * i, + load[64 + 2 * i]); + return TEST_FAIL; + } + #endif + } + return TEST_PASS; +} + +/* + * unsigned long store[128] + * unsigned long load[128] + */ +int compare_vsx_vmx(unsigned long *store, unsigned long *load) +{ + int i; + + for (i = 0; i < VSX_MAX; i++) { + if (store[1 + 2 * i] != load[1 + 2 * i]) { + printf("store[%d]: %lx load[%d] %lx\n", + 1 + 2 * i, store[i], + 1 + 2 * i, load[i]); + return TEST_FAIL; + } + } + + #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + for (i = 64; i < VEC_MAX; i++) { + if (store[i] != load[i]) { + printf("store[%d]: %lx load[%d] %lx\n", + i, store[i], i, load[i]); + return TEST_FAIL; + } + } + #else /* In LE each value pair is stored in an alternate manner */ + for (i = 64; i < VEC_MAX; i++) { + if (!(i % 2) && (store[i] != load[i+1])) { + printf("store[%d]: %lx load[%d] %lx\n", + i, store[i], i+1, load[i+1]); + return TEST_FAIL; + } + if ((i % 2) && (store[i] != load[i-1])) { + printf("here store[%d]: %lx load[%d] %lx\n", + i, store[i], i-1, load[i-1]); + return TEST_FAIL; + } + } + #endif + return TEST_PASS; +} + +void load_vsx_vmx(unsigned long *load, unsigned long *vsx, + unsigned long vmx[][2]) +{ + int i; + + for (i = 0; i < VSX_MAX; i++) + vsx[i] = load[1 + 2 * i]; + + for (i = 0; i < VMX_MAX; i++) { + vmx[i][0] = load[64 + 2 * i]; + vmx[i][1] = load[65 + 2 * i]; + } +} + +void loadvsx(void *p, int tmp); +void storevsx(void *p, int tmp); diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace.h b/tools/testing/selftests/powerpc/ptrace/ptrace.h new file mode 100644 index 0000000..19fb8252 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace.h @@ -0,0 +1,711 @@ +/* + * Ptrace interface test helper functions + * + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <inttypes.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <malloc.h> +#include <errno.h> +#include <time.h> +#include <sys/ptrace.h> +#include <sys/ioctl.h> +#include <sys/uio.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <sys/signal.h> +#include <sys/ipc.h> +#include <sys/shm.h> +#include <sys/user.h> +#include <linux/elf.h> +#include <linux/types.h> +#include <linux/auxvec.h> +#include "reg.h" +#include "utils.h" + +#define TEST_PASS 0 +#define TEST_FAIL 1 + +struct fpr_regs { + unsigned long fpr[32]; + unsigned long fpscr; +}; + +struct tm_spr_regs { + unsigned long tm_tfhar; + unsigned long tm_texasr; + unsigned long tm_tfiar; +}; + +#ifndef NT_PPC_TAR +#define NT_PPC_TAR 0x103 +#define NT_PPC_PPR 0x104 +#define NT_PPC_DSCR 0x105 +#define NT_PPC_EBB 0x106 +#define NT_PPC_PMU 0x107 +#define NT_PPC_TM_CGPR 0x108 +#define NT_PPC_TM_CFPR 0x109 +#define NT_PPC_TM_CVMX 0x10a +#define NT_PPC_TM_CVSX 0x10b +#define NT_PPC_TM_SPR 0x10c +#define NT_PPC_TM_CTAR 0x10d +#define NT_PPC_TM_CPPR 0x10e +#define NT_PPC_TM_CDSCR 0x10f +#endif + +/* Basic ptrace operations */ +int start_trace(pid_t child) +{ + int ret; + + ret = ptrace(PTRACE_ATTACH, child, NULL, NULL); + if (ret) { + perror("ptrace(PTRACE_ATTACH) failed"); + return TEST_FAIL; + } + ret = waitpid(child, NULL, 0); + if (ret != child) { + perror("waitpid() failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int stop_trace(pid_t child) +{ + int ret; + + ret = ptrace(PTRACE_DETACH, child, NULL, NULL); + if (ret) { + perror("ptrace(PTRACE_DETACH) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int cont_trace(pid_t child) +{ + int ret; + + ret = ptrace(PTRACE_CONT, child, NULL, NULL); + if (ret) { + perror("ptrace(PTRACE_CONT) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +/* TAR, PPR, DSCR */ +int show_tar_registers(pid_t child, unsigned long *out) +{ + struct iovec iov; + unsigned long *reg; + int ret; + + reg = malloc(sizeof(unsigned long)); + if (!reg) { + perror("malloc() failed"); + return TEST_FAIL; + } + iov.iov_base = (u64 *) reg; + iov.iov_len = sizeof(unsigned long); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TAR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + if (out) + out[0] = *reg; + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_PPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + if (out) + out[1] = *reg; + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_DSCR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + if (out) + out[2] = *reg; + + free(reg); + return TEST_PASS; +fail: + free(reg); + return TEST_FAIL; +} + +int write_tar_registers(pid_t child, unsigned long tar, + unsigned long ppr, unsigned long dscr) +{ + struct iovec iov; + unsigned long *reg; + int ret; + + reg = malloc(sizeof(unsigned long)); + if (!reg) { + perror("malloc() failed"); + return TEST_FAIL; + } + + iov.iov_base = (u64 *) reg; + iov.iov_len = sizeof(unsigned long); + + *reg = tar; + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TAR, &iov); + if (ret) { + perror("ptrace(PTRACE_SETREGSET) failed"); + goto fail; + } + + *reg = ppr; + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_PPR, &iov); + if (ret) { + perror("ptrace(PTRACE_SETREGSET) failed"); + goto fail; + } + + *reg = dscr; + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_DSCR, &iov); + if (ret) { + perror("ptrace(PTRACE_SETREGSET) failed"); + goto fail; + } + + free(reg); + return TEST_PASS; +fail: + free(reg); + return TEST_FAIL; +} + +int show_tm_checkpointed_state(pid_t child, unsigned long *out) +{ + struct iovec iov; + unsigned long *reg; + int ret; + + reg = malloc(sizeof(unsigned long)); + if (!reg) { + perror("malloc() failed"); + return TEST_FAIL; + } + + iov.iov_base = (u64 *) reg; + iov.iov_len = sizeof(unsigned long); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CTAR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + if (out) + out[0] = *reg; + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CPPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + if (out) + out[1] = *reg; + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CDSCR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + if (out) + out[2] = *reg; + + free(reg); + return TEST_PASS; + +fail: + free(reg); + return TEST_FAIL; +} + +int write_ckpt_tar_registers(pid_t child, unsigned long tar, + unsigned long ppr, unsigned long dscr) +{ + struct iovec iov; + unsigned long *reg; + int ret; + + reg = malloc(sizeof(unsigned long)); + if (!reg) { + perror("malloc() failed"); + return TEST_FAIL; + } + + iov.iov_base = (u64 *) reg; + iov.iov_len = sizeof(unsigned long); + + *reg = tar; + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CTAR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + + *reg = ppr; + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CPPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + + *reg = dscr; + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CDSCR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + goto fail; + } + + free(reg); + return TEST_PASS; +fail: + free(reg); + return TEST_FAIL; +} + +/* FPR */ +int show_fpr(pid_t child, unsigned long *fpr) +{ + struct fpr_regs *regs; + int ret, i; + + regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs)); + ret = ptrace(PTRACE_GETFPREGS, child, NULL, regs); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + if (fpr) { + for (i = 0; i < 32; i++) + fpr[i] = regs->fpr[i]; + } + return TEST_PASS; +} + +int write_fpr(pid_t child, unsigned long val) +{ + struct fpr_regs *regs; + int ret, i; + + regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs)); + ret = ptrace(PTRACE_GETFPREGS, child, NULL, regs); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + for (i = 0; i < 32; i++) + regs->fpr[i] = val; + + ret = ptrace(PTRACE_SETFPREGS, child, NULL, regs); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int show_ckpt_fpr(pid_t child, unsigned long *fpr) +{ + struct fpr_regs *regs; + struct iovec iov; + int ret, i; + + regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs)); + iov.iov_base = regs; + iov.iov_len = sizeof(struct fpr_regs); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CFPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + if (fpr) { + for (i = 0; i < 32; i++) + fpr[i] = regs->fpr[i]; + } + + return TEST_PASS; +} + +int write_ckpt_fpr(pid_t child, unsigned long val) +{ + struct fpr_regs *regs; + struct iovec iov; + int ret, i; + + regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs)); + iov.iov_base = regs; + iov.iov_len = sizeof(struct fpr_regs); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CFPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + for (i = 0; i < 32; i++) + regs->fpr[i] = val; + + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CFPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +/* GPR */ +int show_gpr(pid_t child, unsigned long *gpr) +{ + struct pt_regs *regs; + int ret, i; + + regs = (struct pt_regs *) malloc(sizeof(struct pt_regs)); + if (!regs) { + perror("malloc() failed"); + return TEST_FAIL; + } + + ret = ptrace(PTRACE_GETREGS, child, NULL, regs); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + if (gpr) { + for (i = 14; i < 32; i++) + gpr[i-14] = regs->gpr[i]; + } + + return TEST_PASS; +} + +int write_gpr(pid_t child, unsigned long val) +{ + struct pt_regs *regs; + int i, ret; + + regs = (struct pt_regs *) malloc(sizeof(struct pt_regs)); + if (!regs) { + perror("malloc() failed"); + return TEST_FAIL; + } + + ret = ptrace(PTRACE_GETREGS, child, NULL, regs); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + for (i = 14; i < 32; i++) + regs->gpr[i] = val; + + ret = ptrace(PTRACE_SETREGS, child, NULL, regs); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int show_ckpt_gpr(pid_t child, unsigned long *gpr) +{ + struct pt_regs *regs; + struct iovec iov; + int ret, i; + + regs = (struct pt_regs *) malloc(sizeof(struct pt_regs)); + if (!regs) { + perror("malloc() failed"); + return TEST_FAIL; + } + + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(struct pt_regs); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CGPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + if (gpr) { + for (i = 14; i < 32; i++) + gpr[i-14] = regs->gpr[i]; + } + + return TEST_PASS; +} + +int write_ckpt_gpr(pid_t child, unsigned long val) +{ + struct pt_regs *regs; + struct iovec iov; + int ret, i; + + regs = (struct pt_regs *) malloc(sizeof(struct pt_regs)); + if (!regs) { + perror("malloc() failed\n"); + return TEST_FAIL; + } + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(struct pt_regs); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CGPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + for (i = 14; i < 32; i++) + regs->gpr[i] = val; + + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CGPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +/* VMX */ +int show_vmx(pid_t child, unsigned long vmx[][2]) +{ + int ret; + + ret = ptrace(PTRACE_GETVRREGS, child, 0, vmx); + if (ret) { + perror("ptrace(PTRACE_GETVRREGS) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int show_vmx_ckpt(pid_t child, unsigned long vmx[][2]) +{ + unsigned long regs[34][2]; + struct iovec iov; + int ret; + + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(regs); + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CVMX, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET, NT_PPC_TM_CVMX) failed"); + return TEST_FAIL; + } + memcpy(vmx, regs, sizeof(regs)); + return TEST_PASS; +} + + +int write_vmx(pid_t child, unsigned long vmx[][2]) +{ + int ret; + + ret = ptrace(PTRACE_SETVRREGS, child, 0, vmx); + if (ret) { + perror("ptrace(PTRACE_SETVRREGS) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int write_vmx_ckpt(pid_t child, unsigned long vmx[][2]) +{ + unsigned long regs[34][2]; + struct iovec iov; + int ret; + + memcpy(regs, vmx, sizeof(regs)); + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(regs); + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CVMX, &iov); + if (ret) { + perror("ptrace(PTRACE_SETREGSET, NT_PPC_TM_CVMX) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +/* VSX */ +int show_vsx(pid_t child, unsigned long *vsx) +{ + int ret; + + ret = ptrace(PTRACE_GETVSRREGS, child, 0, vsx); + if (ret) { + perror("ptrace(PTRACE_GETVSRREGS) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int show_vsx_ckpt(pid_t child, unsigned long *vsx) +{ + unsigned long regs[32]; + struct iovec iov; + int ret; + + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(regs); + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CVSX, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET, NT_PPC_TM_CVSX) failed"); + return TEST_FAIL; + } + memcpy(vsx, regs, sizeof(regs)); + return TEST_PASS; +} + +int write_vsx(pid_t child, unsigned long *vsx) +{ + int ret; + + ret = ptrace(PTRACE_SETVSRREGS, child, 0, vsx); + if (ret) { + perror("ptrace(PTRACE_SETVSRREGS) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +int write_vsx_ckpt(pid_t child, unsigned long *vsx) +{ + unsigned long regs[32]; + struct iovec iov; + int ret; + + memcpy(regs, vsx, sizeof(regs)); + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(regs); + ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CVSX, &iov); + if (ret) { + perror("ptrace(PTRACE_SETREGSET, NT_PPC_TM_CVSX) failed"); + return TEST_FAIL; + } + return TEST_PASS; +} + +/* TM SPR */ +int show_tm_spr(pid_t child, struct tm_spr_regs *out) +{ + struct tm_spr_regs *regs; + struct iovec iov; + int ret; + + regs = (struct tm_spr_regs *) malloc(sizeof(struct tm_spr_regs)); + if (!regs) { + perror("malloc() failed"); + return TEST_FAIL; + } + + iov.iov_base = (u64 *) regs; + iov.iov_len = sizeof(struct tm_spr_regs); + + ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_SPR, &iov); + if (ret) { + perror("ptrace(PTRACE_GETREGSET) failed"); + return TEST_FAIL; + } + + if (out) + memcpy(out, regs, sizeof(struct tm_spr_regs)); + + return TEST_PASS; +} + + + +/* Analyse TEXASR after TM failure */ +inline unsigned long get_tfiar(void) +{ + unsigned long ret; + + asm volatile("mfspr %0,%1" : "=r" (ret) : "i" (SPRN_TFIAR)); + return ret; +} + +void analyse_texasr(unsigned long texasr) +{ + printf("TEXASR: %16lx\t", texasr); + + if (texasr & TEXASR_FP) + printf("TEXASR_FP "); + + if (texasr & TEXASR_DA) + printf("TEXASR_DA "); + + if (texasr & TEXASR_NO) + printf("TEXASR_NO "); + + if (texasr & TEXASR_FO) + printf("TEXASR_FO "); + + if (texasr & TEXASR_SIC) + printf("TEXASR_SIC "); + + if (texasr & TEXASR_NTC) + printf("TEXASR_NTC "); + + if (texasr & TEXASR_TC) + printf("TEXASR_TC "); + + if (texasr & TEXASR_TIC) + printf("TEXASR_TIC "); + + if (texasr & TEXASR_IC) + printf("TEXASR_IC "); + + if (texasr & TEXASR_IFC) + printf("TEXASR_IFC "); + + if (texasr & TEXASR_ABT) + printf("TEXASR_ABT "); + + if (texasr & TEXASR_SPD) + printf("TEXASR_SPD "); + + if (texasr & TEXASR_HV) + printf("TEXASR_HV "); + + if (texasr & TEXASR_PR) + printf("TEXASR_PR "); + + if (texasr & TEXASR_FS) + printf("TEXASR_FS "); + + if (texasr & TEXASR_TE) + printf("TEXASR_TE "); + + if (texasr & TEXASR_ROT) + printf("TEXASR_ROT "); + + printf("TFIAR :%lx\n", get_tfiar()); +} + +void store_gpr(unsigned long *addr); +void store_fpr(float *addr); diff --git a/tools/testing/selftests/powerpc/reg.h b/tools/testing/selftests/powerpc/reg.h deleted file mode 100644 index fddf368..0000000 --- a/tools/testing/selftests/powerpc/reg.h +++ /dev/null @@ -1,60 +0,0 @@ -/* - * Copyright 2014, Michael Ellerman, IBM Corp. - * Licensed under GPLv2. - */ - -#ifndef _SELFTESTS_POWERPC_REG_H -#define _SELFTESTS_POWERPC_REG_H - -#define __stringify_1(x) #x -#define __stringify(x) __stringify_1(x) - -#define mfspr(rn) ({unsigned long rval; \ - asm volatile("mfspr %0," _str(rn) \ - : "=r" (rval)); rval; }) -#define mtspr(rn, v) asm volatile("mtspr " _str(rn) ",%0" : \ - : "r" ((unsigned long)(v)) \ - : "memory") - -#define mb() asm volatile("sync" : : : "memory"); - -#define SPRN_MMCR2 769 -#define SPRN_MMCRA 770 -#define SPRN_MMCR0 779 -#define MMCR0_PMAO 0x00000080 -#define MMCR0_PMAE 0x04000000 -#define MMCR0_FC 0x80000000 -#define SPRN_EBBHR 804 -#define SPRN_EBBRR 805 -#define SPRN_BESCR 806 /* Branch event status & control register */ -#define SPRN_BESCRS 800 /* Branch event status & control set (1 bits set to 1) */ -#define SPRN_BESCRSU 801 /* Branch event status & control set upper */ -#define SPRN_BESCRR 802 /* Branch event status & control REset (1 bits set to 0) */ -#define SPRN_BESCRRU 803 /* Branch event status & control REset upper */ - -#define BESCR_PMEO 0x1 /* PMU Event-based exception Occurred */ -#define BESCR_PME (0x1ul << 32) /* PMU Event-based exception Enable */ -#define BESCR_LME (0x1ul << 34) /* Load Monitor Enable */ -#define BESCR_LMEO (0x1ul << 2) /* Load Monitor Exception Occurred */ - -#define SPRN_LMRR 813 /* Load Monitor Region Register */ -#define SPRN_LMSER 814 /* Load Monitor Section Enable Register */ - -#define SPRN_PMC1 771 -#define SPRN_PMC2 772 -#define SPRN_PMC3 773 -#define SPRN_PMC4 774 -#define SPRN_PMC5 775 -#define SPRN_PMC6 776 - -#define SPRN_SIAR 780 -#define SPRN_SDAR 781 -#define SPRN_SIER 768 - -#define SPRN_TEXASR 0x82 -#define SPRN_TFIAR 0x81 /* Transaction Failure Inst Addr */ -#define SPRN_TFHAR 0x80 /* Transaction Failure Handler Addr */ -#define TEXASR_FS 0x08000000 -#define SPRN_TAR 0x32f - -#endif /* _SELFTESTS_POWERPC_REG_H */ diff --git a/tools/testing/selftests/powerpc/signal/signal.S b/tools/testing/selftests/powerpc/signal/signal.S index 7043d52..322f2f1 100644 --- a/tools/testing/selftests/powerpc/signal/signal.S +++ b/tools/testing/selftests/powerpc/signal/signal.S @@ -7,7 +7,7 @@ * 2 of the License, or (at your option) any later version. */ -#include "../basic_asm.h" +#include "basic_asm.h" /* long signal_self(pid_t pid, int sig); */ FUNC_START(signal_self) diff --git a/tools/testing/selftests/powerpc/stringloops/memcmp.c b/tools/testing/selftests/powerpc/stringloops/memcmp.c index 17417dd..30b1222 100644 --- a/tools/testing/selftests/powerpc/stringloops/memcmp.c +++ b/tools/testing/selftests/powerpc/stringloops/memcmp.c @@ -1,7 +1,7 @@ #include <malloc.h> #include <stdlib.h> #include <string.h> -#include "../utils.h" +#include "utils.h" #define SIZE 256 #define ITERATIONS 10000 diff --git a/tools/testing/selftests/powerpc/tm/tm-signal.S b/tools/testing/selftests/powerpc/tm/tm-signal.S index 4e13e8b..506a4eb 100644 --- a/tools/testing/selftests/powerpc/tm/tm-signal.S +++ b/tools/testing/selftests/powerpc/tm/tm-signal.S @@ -7,11 +7,11 @@ * 2 of the License, or (at your option) any later version. */ -#include "../basic_asm.h" -#include "../gpr_asm.h" -#include "../fpu_asm.h" -#include "../vmx_asm.h" -#include "../vsx_asm.h" +#include "basic_asm.h" +#include "gpr_asm.h" +#include "fpu_asm.h" +#include "vmx_asm.h" +#include "vsx_asm.h" /* * Large caveat here being that the caller cannot expect the diff --git a/tools/testing/selftests/powerpc/tm/tm.h b/tools/testing/selftests/powerpc/tm/tm.h index 2c8da74..0ffff04 100644 --- a/tools/testing/selftests/powerpc/tm/tm.h +++ b/tools/testing/selftests/powerpc/tm/tm.h @@ -10,7 +10,7 @@ #include <asm/cputable.h> #include <stdbool.h> -#include "../utils.h" +#include "utils.h" static inline bool have_htm(void) { |
