diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-11 20:34:00 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-11 20:34:00 -0400 |
| commit | fd9879b9bb3258ebc27a4cc6d2d29f528f71901f (patch) | |
| tree | 48b68994f5e8083aafe116533e8143cb2bf30c85 | |
| parent | 81ae31d78239318610d7c2acb3e2610d622a5aa4 (diff) | |
| parent | d53ba6b3bba33432cc37b7101a86f8f3392c46e7 (diff) | |
| download | op-kernel-dev-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.zip op-kernel-dev-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.tar.gz | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman:
"Here's a first pull request for powerpc updates for 3.18.
The bulk of the additions are for the "cxl" driver, for IBM's Coherent
Accelerator Processor Interface (CAPI). Most of it's in drivers/misc,
which Greg & Arnd maintain, Greg said he was happy for us to take it
through our tree.
There's the usual minor cleanups and fixes, including a bit of noise
in drivers from some of those. A bunch of updates to our EEH code,
which has been getting more testing. Several nice speedups from
Anton, including 20% in clear_page().
And a bunch of updates for freescale from Scott"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits)
cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking
cxl: Add documentation for userspace APIs
cxl: Add driver to Kbuild and Makefiles
cxl: Add userspace header file
cxl: Driver code for powernv PCIe based cards for userspace access
cxl: Add base builtin support
powerpc/mm: Add hooks for cxl
powerpc/opal: Add PHB to cxl mode call
powerpc/mm: Add new hash_page_mm()
powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
cxl: Add new header for call backs and structs
powerpc/powernv: Split out set MSI IRQ chip code
powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
powerpc/msi: Improve IRQ bitmap allocator
powerpc/cell: Make spu_flush_all_slbs() generic
powerpc/cell: Move data segment faulting code out of cell platform
powerpc/cell: Move spu_handle_mm_fault() out of cell platform
powerpc/pseries: Use new defines when calling H_SET_MODE
powerpc: Update contact info in Documentation files
powerpc/perf/hv-24x7: Simplify catalog_read()
...
236 files changed, 8633 insertions, 1566 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 index e78ee79..32f3f5f 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 @@ -1,6 +1,6 @@ What: /sys/bus/event_source/devices/hv_24x7/interface/catalog Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: Provides access to the binary "24x7 catalog" provided by the hypervisor on POWER7 and 8 systems. This catalog lists events @@ -10,14 +10,14 @@ Description: What: /sys/bus/event_source/devices/hv_24x7/interface/catalog_length Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: A number equal to the length in bytes of the catalog. This is also extractable from the provided binary "catalog" sysfs entry. What: /sys/bus/event_source/devices/hv_24x7/interface/catalog_version Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: Exposes the "version" field of the 24x7 catalog. This is also extractable from the provided binary "catalog" sysfs entry. diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci index 3fa58c2..3ca4e55 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci @@ -1,6 +1,6 @@ What: /sys/bus/event_source/devices/hv_gpci/interface/collect_privileged Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: '0' if the hypervisor is configured to forbid access to event counters being accumulated by other guests and to physical @@ -9,35 +9,35 @@ Description: What: /sys/bus/event_source/devices/hv_gpci/interface/ga Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: 0 or 1. Indicates whether we have access to "GA" events (listed in arch/powerpc/perf/hv-gpci.h). What: /sys/bus/event_source/devices/hv_gpci/interface/expanded Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: 0 or 1. Indicates whether we have access to "EXPANDED" events (listed in arch/powerpc/perf/hv-gpci.h). What: /sys/bus/event_source/devices/hv_gpci/interface/lab Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: 0 or 1. Indicates whether we have access to "LAB" events (listed in arch/powerpc/perf/hv-gpci.h). What: /sys/bus/event_source/devices/hv_gpci/interface/version Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: A number indicating the version of the gpci interface that the hypervisor reports supporting. What: /sys/bus/event_source/devices/hv_gpci/interface/kernel_version Date: February 2014 -Contact: Cody P Schafer <cody@linux.vnet.ibm.com> +Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org> Description: A number indicating the latest version of the gpci interface that the kernel is aware of. diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl new file mode 100644 index 0000000..554405e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-cxl @@ -0,0 +1,129 @@ +Slave contexts (eg. /sys/class/cxl/afu0.0s): + +What: /sys/class/cxl/<afu>/irqs_max +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + Decimal value of maximum number of interrupts that can be + requested by userspace. The default on probe is the maximum + that hardware can support (eg. 2037). Write values will limit + userspace applications to that many userspace interrupts. Must + be >= irqs_min. + +What: /sys/class/cxl/<afu>/irqs_min +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the minimum number of interrupts that + userspace must request on a CXL_START_WORK ioctl. Userspace may + omit the num_interrupts field in the START_WORK IOCTL to get + this minimum automatically. + +What: /sys/class/cxl/<afu>/mmio_size +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the size of the MMIO space that may be mmaped + by userspace. + +What: /sys/class/cxl/<afu>/modes_supported +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + List of the modes this AFU supports. One per line. + Valid entries are: "dedicated_process" and "afu_directed" + +What: /sys/class/cxl/<afu>/mode +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + The current mode the AFU is using. Will be one of the modes + given in modes_supported. Writing will change the mode + provided that no user contexts are attached. + + +What: /sys/class/cxl/<afu>/prefault_mode +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + Set the mode for prefaulting in segments into the segment table + when performing the START_WORK ioctl. Possible values: + none: No prefaulting (default) + work_element_descriptor: Treat the work element + descriptor as an effective address and + prefault what it points to. + all: all segments process calling START_WORK maps. + +What: /sys/class/cxl/<afu>/reset +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: write only + Writing 1 here will reset the AFU provided there are not + contexts active on the AFU. + +What: /sys/class/cxl/<afu>/api_version +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the current version of the kernel/user API. + +What: /sys/class/cxl/<afu>/api_version_com +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the the lowest version of the userspace API + this this kernel supports. + + + +Master contexts (eg. /sys/class/cxl/afu0.0m) + +What: /sys/class/cxl/<afu>m/mmio_size +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the size of the MMIO space that may be mmaped + by userspace. This includes all slave contexts space also. + +What: /sys/class/cxl/<afu>m/pp_mmio_len +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the Per Process MMIO space length. + +What: /sys/class/cxl/<afu>m/pp_mmio_off +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Decimal value of the Per Process MMIO space offset. + + +Card info (eg. /sys/class/cxl/card0) + +What: /sys/class/cxl/<card>/caia_version +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Identifies the CAIA Version the card implements. + +What: /sys/class/cxl/<card>/psl_version +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Identifies the revision level of the PSL. + +What: /sys/class/cxl/<card>/base_image +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Identifies the revision level of the base image for devices + that support loadable PSLs. For FPGAs this field identifies + the image contained in the on-adapter flash which is loaded + during the initial program load. + +What: /sys/class/cxl/<card>/image_loaded +Date: September 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Will return "user" or "factory" depending on the image loaded + onto the card. diff --git a/Documentation/devicetree/bindings/pci/fsl,pci.txt b/Documentation/devicetree/bindings/pci/fsl,pci.txt new file mode 100644 index 0000000..d8ac4a7 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/fsl,pci.txt @@ -0,0 +1,27 @@ +* Bus Enumeration by Freescale PCI-X Agent + +Typically any Freescale PCI-X bridge hardware strapped into Agent mode +is prevented from enumerating the bus. The PrPMC form-factor requires +all mezzanines to be PCI-X Agents, but one per system may still +enumerate the bus. + +The property defined below will allow a PCI-X bridge to be used for bus +enumeration despite being strapped into Agent mode. + +Required properties: +- fsl,pci-agent-force-enum : There is no value associated with this + property. The property itself is treated as a boolean. + +Example: + + /* PCI-X bridge known to be PrPMC Monarch */ + pci0: pci@ef008000 { + fsl,pci-agent-force-enum; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci"; + device_type = "pci"; + ... + ... + }; diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt index 7e240a7..8136e1f 100644 --- a/Documentation/ioctl/ioctl-number.txt +++ b/Documentation/ioctl/ioctl-number.txt @@ -313,6 +313,7 @@ Code Seq#(hex) Include File Comments 0xB1 00-1F PPPoX <mailto:mostrows@styx.uwaterloo.ca> 0xB3 00 linux/mmc/ioctl.h 0xC0 00-0F linux/usb/iowarrior.h +0xCA 00-0F uapi/misc/cxl.h 0xCB 00-1F CBM serial IEC bus in development: <mailto:michael.klein@puffin.lb.shuttle.de> 0xCD 01 linux/reiserfs_fs.h diff --git a/Documentation/powerpc/00-INDEX b/Documentation/powerpc/00-INDEX index a68784d..6fd0e8b 100644 --- a/Documentation/powerpc/00-INDEX +++ b/Documentation/powerpc/00-INDEX @@ -11,6 +11,8 @@ bootwrapper.txt cpu_features.txt - info on how we support a variety of CPUs with minimal compile-time options. +cxl.txt + - Overview of the CXL driver. eeh-pci-error-recovery.txt - info on PCI Bus EEH Error Recovery firmware-assisted-dump.txt diff --git a/Documentation/powerpc/cxl.txt b/Documentation/powerpc/cxl.txt new file mode 100644 index 0000000..2c71ecc --- /dev/null +++ b/Documentation/powerpc/cxl.txt @@ -0,0 +1,379 @@ +Coherent Accelerator Interface (CXL) +==================================== + +Introduction +============ + + The coherent accelerator interface is designed to allow the + coherent connection of accelerators (FPGAs and other devices) to a + POWER system. These devices need to adhere to the Coherent + Accelerator Interface Architecture (CAIA). + + IBM refers to this as the Coherent Accelerator Processor Interface + or CAPI. In the kernel it's referred to by the name CXL to avoid + confusion with the ISDN CAPI subsystem. + + Coherent in this context means that the accelerator and CPUs can + both access system memory directly and with the same effective + addresses. + + +Hardware overview +================= + + POWER8 FPGA + +----------+ +---------+ + | | | | + | CPU | | AFU | + | | | | + | | | | + | | | | + +----------+ +---------+ + | PHB | | | + | +------+ | PSL | + | | CAPP |<------>| | + +---+------+ PCIE +---------+ + + The POWER8 chip has a Coherently Attached Processor Proxy (CAPP) + unit which is part of the PCIe Host Bridge (PHB). This is managed + by Linux by calls into OPAL. Linux doesn't directly program the + CAPP. + + The FPGA (or coherently attached device) consists of two parts. + The POWER Service Layer (PSL) and the Accelerator Function Unit + (AFU). The AFU is used to implement specific functionality behind + the PSL. The PSL, among other things, provides memory address + translation services to allow each AFU direct access to userspace + memory. + + The AFU is the core part of the accelerator (eg. the compression, + crypto etc function). The kernel has no knowledge of the function + of the AFU. Only userspace interacts directly with the AFU. + + The PSL provides the translation and interrupt services that the + AFU needs. This is what the kernel interacts with. For example, if + the AFU needs to read a particular effective address, it sends + that address to the PSL, the PSL then translates it, fetches the + data from memory and returns it to the AFU. If the PSL has a + translation miss, it interrupts the kernel and the kernel services + the fault. The context to which this fault is serviced is based on + who owns that acceleration function. + + +AFU Modes +========= + + There are two programming modes supported by the AFU. Dedicated + and AFU directed. AFU may support one or both modes. + + When using dedicated mode only one MMU context is supported. In + this mode, only one userspace process can use the accelerator at + time. + + When using AFU directed mode, up to 16K simultaneous contexts can + be supported. This means up to 16K simultaneous userspace + applications may use the accelerator (although specific AFUs may + support fewer). In this mode, the AFU sends a 16 bit context ID + with each of its requests. This tells the PSL which context is + associated with each operation. If the PSL can't translate an + operation, the ID can also be accessed by the kernel so it can + determine the userspace context associated with an operation. + + +MMIO space +========== + + A portion of the accelerator MMIO space can be directly mapped + from the AFU to userspace. Either the whole space can be mapped or + just a per context portion. The hardware is self describing, hence + the kernel can determine the offset and size of the per context + portion. + + +Interrupts +========== + + AFUs may generate interrupts that are destined for userspace. These + are received by the kernel as hardware interrupts and passed onto + userspace by a read syscall documented below. + + Data storage faults and error interrupts are handled by the kernel + driver. + + +Work Element Descriptor (WED) +============================= + + The WED is a 64-bit parameter passed to the AFU when a context is + started. Its format is up to the AFU hence the kernel has no + knowledge of what it represents. Typically it will be the + effective address of a work queue or status block where the AFU + and userspace can share control and status information. + + + + +User API +======== + + For AFUs operating in AFU directed mode, two character device + files will be created. /dev/cxl/afu0.0m will correspond to a + master context and /dev/cxl/afu0.0s will correspond to a slave + context. Master contexts have access to the full MMIO space an + AFU provides. Slave contexts have access to only the per process + MMIO space an AFU provides. + + For AFUs operating in dedicated process mode, the driver will + only create a single character device per AFU called + /dev/cxl/afu0.0d. This will have access to the entire MMIO space + that the AFU provides (like master contexts in AFU directed). + + The types described below are defined in include/uapi/misc/cxl.h + + The following file operations are supported on both slave and + master devices. + + +open +---- + + Opens the device and allocates a file descriptor to be used with + the rest of the API. + + A dedicated mode AFU only has one context and only allows the + device to be opened once. + + An AFU directed mode AFU can have many contexts, the device can be + opened once for each context that is available. + + When all available contexts are allocated the open call will fail + and return -ENOSPC. + + Note: IRQs need to be allocated for each context, which may limit + the number of contexts that can be created, and therefore + how many times the device can be opened. The POWER8 CAPP + supports 2040 IRQs and 3 are used by the kernel, so 2037 are + left. If 1 IRQ is needed per context, then only 2037 + contexts can be allocated. If 4 IRQs are needed per context, + then only 2037/4 = 509 contexts can be allocated. + + +ioctl +----- + + CXL_IOCTL_START_WORK: + Starts the AFU context and associates it with the current + process. Once this ioctl is successfully executed, all memory + mapped into this process is accessible to this AFU context + using the same effective addresses. No additional calls are + required to map/unmap memory. The AFU memory context will be + updated as userspace allocates and frees memory. This ioctl + returns once the AFU context is started. + + Takes a pointer to a struct cxl_ioctl_start_work: + + struct cxl_ioctl_start_work { + __u64 flags; + __u64 work_element_descriptor; + __u64 amr; + __s16 num_interrupts; + __s16 reserved1; + __s32 reserved2; + __u64 reserved3; + __u64 reserved4; + __u64 reserved5; + __u64 reserved6; + }; + + flags: + Indicates which optional fields in the structure are + valid. + + work_element_descriptor: + The Work Element Descriptor (WED) is a 64-bit argument + defined by the AFU. Typically this is an effective + address pointing to an AFU specific structure + describing what work to perform. + + amr: + Authority Mask Register (AMR), same as the powerpc + AMR. This field is only used by the kernel when the + corresponding CXL_START_WORK_AMR value is specified in + flags. If not specified the kernel will use a default + value of 0. + + num_interrupts: + Number of userspace interrupts to request. This field + is only used by the kernel when the corresponding + CXL_START_WORK_NUM_IRQS value is specified in flags. + If not specified the minimum number required by the + AFU will be allocated. The min and max number can be + obtained from sysfs. + + reserved fields: + For ABI padding and future extensions + + CXL_IOCTL_GET_PROCESS_ELEMENT: + Get the current context id, also known as the process element. + The value is returned from the kernel as a __u32. + + +mmap +---- + + An AFU may have an MMIO space to facilitate communication with the + AFU. If it does, the MMIO space can be accessed via mmap. The size + and contents of this area are specific to the particular AFU. The + size can be discovered via sysfs. + + In AFU directed mode, master contexts are allowed to map all of + the MMIO space and slave contexts are allowed to only map the per + process MMIO space associated with the context. In dedicated + process mode the entire MMIO space can always be mapped. + + This mmap call must be done after the START_WORK ioctl. + + Care should be taken when accessing MMIO space. Only 32 and 64-bit + accesses are supported by POWER8. Also, the AFU will be designed + with a specific endianness, so all MMIO accesses should consider + endianness (recommend endian(3) variants like: le64toh(), + be64toh() etc). These endian issues equally apply to shared memory + queues the WED may describe. + + +read +---- + + Reads events from the AFU. Blocks if no events are pending + (unless O_NONBLOCK is supplied). Returns -EIO in the case of an + unrecoverable error or if the card is removed. + + read() will always return an integral number of events. + + The buffer passed to read() must be at least 4K bytes. + + The result of the read will be a buffer of one or more events, + each event is of type struct cxl_event, of varying size. + + struct cxl_event { + struct cxl_event_header header; + union { + struct cxl_event_afu_interrupt irq; + struct cxl_event_data_storage fault; + struct cxl_event_afu_error afu_error; + }; + }; + + The struct cxl_event_header is defined as: + + struct cxl_event_header { + __u16 type; + __u16 size; + __u16 process_element; + __u16 reserved1; + }; + + type: + This defines the type of event. The type determines how + the rest of the event is structured. These types are + described below and defined by enum cxl_event_type. + + size: + This is the size of the event in bytes including the + struct cxl_event_header. The start of the next event can + be found at this offset from the start of the current + event. + + process_element: + Context ID of the event. + + reserved field: + For future extensions and padding. + + If the event type is CXL_EVENT_AFU_INTERRUPT then the event + structure is defined as: + + struct cxl_event_afu_interrupt { + __u16 flags; + __u16 irq; /* Raised AFU interrupt number */ + __u32 reserved1; + }; + + flags: + These flags indicate which optional fields are present + in this struct. Currently all fields are mandatory. + + irq: + The IRQ number sent by the AFU. + + reserved field: + For future extensions and padding. + + If the event type is CXL_EVENT_DATA_STORAGE then the event + structure is defined as: + + struct cxl_event_data_storage { + __u16 flags; + __u16 reserved1; + __u32 reserved2; + __u64 addr; + __u64 dsisr; + __u64 reserved3; + }; + + flags: + These flags indicate which optional fields are present in + this struct. Currently all fields are mandatory. + + address: + The address that the AFU unsuccessfully attempted to + access. Valid accesses will be handled transparently by the + kernel but invalid accesses will generate this event. + + dsisr: + This field gives information on the type of fault. It is a + copy of the DSISR from the PSL hardware when the address + fault occurred. The form of the DSISR is as defined in the + CAIA. + + reserved fields: + For future extensions + + If the event type is CXL_EVENT_AFU_ERROR then the event structure + is defined as: + + struct cxl_event_afu_error { + __u16 flags; + __u16 reserved1; + __u32 reserved2; + __u64 error; + }; + + flags: + These flags indicate which optional fields are present in + this struct. Currently all fields are Mandatory. + + error: + Error status from the AFU. Defined by the AFU. + + reserved fields: + For future extensions and padding + +Sysfs Class +=========== + + A cxl sysfs class is added under /sys/class/cxl to facilitate + enumeration and tuning of the accelerators. Its layout is + described in Documentation/ABI/testing/sysfs-class-cxl + +Udev rules +========== + + The following udev rules could be used to create a symlink to the + most logical chardev to use in any programming mode (afuX.Yd for + dedicated, afuX.Ys for afu directed), since the API is virtually + identical for each: + + SUBSYSTEM=="cxl", ATTRS{mode}=="dedicated_process", SYMLINK="cxl/%b" + SUBSYSTEM=="cxl", ATTRS{mode}=="afu_directed", \ + KERNEL=="afu[0-9]*.[0-9]*s", SYMLINK="cxl/%b" diff --git a/MAINTAINERS b/MAINTAINERS index f8d882e..1e53b32 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2761,6 +2761,18 @@ W: http://www.chelsio.com S: Supported F: drivers/net/ethernet/chelsio/cxgb4vf/ +CXL (IBM Coherent Accelerator Processor Interface CAPI) DRIVER +M: Ian Munsie <imunsie@au1.ibm.com> +M: Michael Neuling <mikey@neuling.org> +L: linuxppc-dev@lists.ozlabs.org +S: Supported +F: drivers/misc/cxl/ +F: include/misc/cxl.h +F: include/uapi/misc/cxl.h +F: Documentation/powerpc/cxl.txt +F: Documentation/powerpc/cxl.txt +F: Documentation/ABI/testing/sysfs-class-cxl + STMMAC ETHERNET DRIVER M: Giuseppe Cavallaro <peppe.cavallaro@st.com> L: netdev@vger.kernel.org diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 4bc7b62..88eace4 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -147,6 +147,7 @@ config PPC select ARCH_USE_CMPXCHG_LOCKREF if PPC64 select HAVE_ARCH_AUDITSYSCALL select ARCH_SUPPORTS_ATOMIC_RMW + select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN config GENERIC_CSUM def_bool CPU_LITTLE_ENDIAN @@ -182,7 +183,7 @@ config SCHED_OMIT_FRAME_POINTER config ARCH_MAY_HAVE_PC_FDC bool - default !PPC_PSERIES || PCI + default PCI config PPC_OF def_bool y @@ -287,6 +288,10 @@ config PPC_EMULATE_SSTEP bool default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT +config ZONE_DMA32 + bool + default y if PPC64 + source "init/Kconfig" source "kernel/Kconfig.freezer" @@ -603,6 +608,10 @@ config PPC_SUBPAGE_PROT to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page. +config PPC_COPRO_BASE + bool + default n + config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" depends on PPC64 && SMP diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 5687e29..132d9c6 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -135,6 +135,7 @@ CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) +CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8) # Altivec option not allowed with e500mc64 in GCC. ifeq ($(CONFIG_ALTIVEC),y) diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index ccc25ed..8a5bc1c 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -389,7 +389,12 @@ $(obj)/zImage: $(addprefix $(obj)/, $(image-y)) $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) @rm -f $@; ln $< $@ +# Only install the vmlinux install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) + sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" + +# Install the vmlinux and other built boot targets. +zInstall: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $^ # anything not in $(targets) diff --git a/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi b/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi index 97479f0..aecee96 100644 --- a/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/t2081si-post.dtsi @@ -410,7 +410,7 @@ /include/ "qoriq-gpio-3.dtsi" /include/ "qoriq-usb2-mph-0.dtsi" usb0: usb@210000 { - compatible = "fsl-usb2-mph-v2.4", "fsl-usb2-mph"; + compatible = "fsl-usb2-mph-v2.5", "fsl-usb2-mph"; fsl,iommu-parent = <&pamu1>; fsl,liodn-reg = <&guts 0x520>; /* USB1LIODNR */ phy_type = "utmi"; @@ -418,7 +418,7 @@ }; /include/ "qoriq-usb2-dr-0.dtsi" usb1: usb@211000 { - compatible = "fsl-usb2-dr-v2.4", "fsl-usb2-dr"; + compatible = "fsl-usb2-dr-v2.5", "fsl-usb2-dr"; fsl,iommu-parent = <&pamu1>; fsl,liodn-reg = <&guts 0x524>; /* USB1LIODNR */ dr_mode = "host"; diff --git a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi index a3d582e..7e2fc7c 100644 --- a/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/t4240si-post.dtsi @@ -498,13 +498,13 @@ /include/ "qoriq-gpio-3.dtsi" /include/ "qoriq-usb2-mph-0.dtsi" usb0: usb@210000 { - compatible = "fsl-usb2-mph-v2.4", "fsl-usb2-mph"; + compatible = "fsl-usb2-mph-v2.5", "fsl-usb2-mph"; phy_type = "utmi"; port0; }; /include/ "qoriq-usb2-dr-0.dtsi" usb1: usb@211000 { - compatible = "fsl-usb2-dr-v2.4", "fsl-usb2-dr"; + compatible = "fsl-usb2-dr-v2.5", "fsl-usb2-dr"; dr_mode = "host"; phy_type = "utmi"; }; diff --git a/arch/powerpc/boot/dts/t1040rdb.dts b/arch/powerpc/boot/dts/t1040rdb.dts new file mode 100644 index 0000000..79a0bed --- /dev/null +++ b/arch/powerpc/boot/dts/t1040rdb.dts @@ -0,0 +1,48 @@ +/* + * T1040RDB Device Tree Source + * + * Copyright 2014 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/include/ "fsl/t104xsi-pre.dtsi" +/include/ "t104xrdb.dtsi" + +/ { + model = "fsl,T1040RDB"; + compatible = "fsl,T1040RDB"; + ifc: localbus@ffe124000 { + cpld@3,0 { + compatible = "fsl,t1040rdb-cpld"; + }; + }; +}; + +/include/ "fsl/t1040si-post.dtsi" diff --git a/arch/powerpc/boot/dts/t1042rdb.dts b/arch/powerpc/boot/dts/t1042rdb.dts new file mode 100644 index 0000000..738c237 --- /dev/null +++ b/arch/powerpc/boot/dts/t1042rdb.dts @@ -0,0 +1,48 @@ +/* + * T1042RDB Device Tree Source + * + * Copyright 2014 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/include/ "fsl/t104xsi-pre.dtsi" +/include/ "t104xrdb.dtsi" + +/ { + model = "fsl,T1042RDB"; + compatible = "fsl,T1042RDB"; + ifc: localbus@ffe124000 { + cpld@3,0 { + compatible = "fsl,t1042rdb-cpld"; + }; + }; +}; + +/include/ "fsl/t1042si-post.dtsi" diff --git a/arch/powerpc/boot/dts/t1042rdb_pi.dts b/arch/powerpc/boot/dts/t1042rdb_pi.dts new file mode 100644 index 0000000..634f751 --- /dev/null +++ b/arch/powerpc/boot/dts/t1042rdb_pi.dts @@ -0,0 +1,57 @@ +/* + * T1042RDB_PI Device Tree Source + * + * Copyright 2014 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/include/ "fsl/t104xsi-pre.dtsi" +/include/ "t104xrdb.dtsi" + +/ { + model = "fsl,T1042RDB_PI"; + compatible = "fsl,T1042RDB_PI"; + ifc: localbus@ffe124000 { + cpld@3,0 { + compatible = "fsl,t1042rdb_pi-cpld"; + }; + }; + soc: soc@ffe000000 { + i2c@118000 { + rtc@68 { + compatible = "dallas,ds1337"; + reg = <0x68>; + interrupts = <0x2 0x1 0 0>; + }; + }; + }; +}; + +/include/ "fsl/t1042si-post.dtsi" diff --git a/arch/powerpc/boot/dts/t104xrdb.dtsi b/arch/powerpc/boot/dts/t104xrdb.dtsi new file mode 100644 index 0000000..1cf0f3c --- /dev/null +++ b/arch/powerpc/boot/dts/t104xrdb.dtsi @@ -0,0 +1,156 @@ +/* + * T1040RDB/T1042RDB Device Tree Source + * + * Copyright 2014 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/ { + + ifc: localbus@ffe124000 { + reg = <0xf 0xfe124000 0 0x2000>; + ranges = <0 0 0xf 0xe8000000 0x08000000 + 2 0 0xf 0xff800000 0x00010000 + 3 0 0xf 0xffdf0000 0x00008000>; + + nor@0,0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "cfi-flash"; + reg = <0x0 0x0 0x8000000>; + bank-width = <2>; + device-width = <1>; + }; + + nand@2,0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "fsl,ifc-nand"; + reg = <0x2 0x0 0x10000>; + }; + + cpld@3,0 { + reg = <3 0 0x300>; + }; + }; + + memory { + device_type = "memory"; + }; + + dcsr: dcsr@f00000000 { + ranges = <0x00000000 0xf 0x00000000 0x01072000>; + }; + + soc: soc@ffe000000 { + ranges = <0x00000000 0xf 0xfe000000 0x1000000>; + reg = <0xf 0xfe000000 0 0x00001000>; + + spi@110000 { + flash@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "micron,n25q512a"; + reg = <0>; + spi-max-frequency = <10000000>; /* input clock */ + }; + }; + + i2c@118100 { + pca9546@77 { + compatible = "nxp,pca9546"; + reg = <0x77>; + #address-cells = <1>; + #size-cells = <0>; + }; + }; + + }; + + pci0: pcie@ffe240000 { + reg = <0xf 0xfe240000 0 0x10000>; + ranges = <0x02000000 0 0xe0000000 0xc 0x00000000 0x0 0x10000000 + 0x01000000 0 0x00000000 0xf 0xf8000000 0x0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x10000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; + + pci1: pcie@ffe250000 { + reg = <0xf 0xfe250000 0 0x10000>; + ranges = <0x02000000 0x0 0xe0000000 0xc 0x10000000 0x0 0x10000000 + 0x01000000 0x0 0x00000000 0xf 0xf8010000 0x0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x10000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; + + pci2: pcie@ffe260000 { + reg = <0xf 0xfe260000 0 0x10000>; + ranges = <0x02000000 0 0xe0000000 0xc 0x20000000 0 0x10000000 + 0x01000000 0 0x00000000 0xf 0xf8020000 0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x10000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; + + pci3: pcie@ffe270000 { + reg = <0xf 0xfe270000 0 0x10000>; + ranges = <0x02000000 0 0xe0000000 0xc 0x30000000 0 0x10000000 + 0x01000000 0 0x00000000 0xf 0xf8030000 0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x10000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; +}; diff --git a/arch/powerpc/configs/cell_defconfig b/arch/powerpc/configs/cell_defconfig index 45fd06c..7a7b3c8 100644 --- a/arch/powerpc/configs/cell_defconfig +++ b/arch/powerpc/configs/cell_defconfig @@ -18,6 +18,7 @@ CONFIG_OPROFILE=m CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_BLK_DEV_BSG is not set +# CONFIG_PPC_POWERNV is not set # CONFIG_PPC_PSERIES is not set # CONFIG_PPC_PMAC is not set CONFIG_PPC_PS3=y diff --git a/arch/powerpc/configs/celleb_defconfig b/arch/powerpc/configs/celleb_defconfig index 77d7bf3..acccbfd 100644 --- a/arch/powerpc/configs/celleb_defconfig +++ b/arch/powerpc/configs/celleb_defconfig @@ -15,6 +15,7 @@ CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y +# CONFIG_PPC_POWERNV is not set # CONFIG_PPC_PSERIES is not set # CONFIG_PPC_PMAC is not set CONFIG_PPC_CELLEB=y diff --git a/arch/powerpc/configs/corenet32_smp_defconfig b/arch/powerpc/configs/corenet32_smp_defconfig index 6a3c58a..688e9e4 100644 --- a/arch/powerpc/configs/corenet32_smp_defconfig +++ b/arch/powerpc/configs/corenet32_smp_defconfig @@ -165,6 +165,8 @@ CONFIG_NFS_FS=y CONFIG_NFS_V4=y CONFIG_ROOT_NFS=y CONFIG_NFSD=m +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_CODEPAGE_850=y CONFIG_NLS_ISO8859_1=y CONFIG_NLS_UTF8=m CONFIG_MAGIC_SYSRQ=y diff --git a/arch/powerpc/configs/corenet64_smp_defconfig b/arch/powerpc/configs/corenet64_smp_defconfig index 269d6e4..6db97e4 100644 --- a/arch/powerpc/configs/corenet64_smp_defconfig +++ b/arch/powerpc/configs/corenet64_smp_defconfig @@ -50,7 +50,6 @@ CONFIG_NET_IPIP=y CONFIG_IP_MROUTE=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y -CONFIG_ARPD=y CONFIG_INET_ESP=y # CONFIG_INET_XFRM_MODE_BEET is not set # CONFIG_INET_LRO is not set @@ -60,33 +59,17 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y CONFIG_MTD=y -CONFIG_MTD_OF_PARTS=y CONFIG_MTD_CMDLINE_PARTS=y -CONFIG_MTD_CHAR=y -CONFIG_MTD_BLKDEVS=y CONFIG_MTD_BLOCK=y CONFIG_FTL=y CONFIG_MTD_CFI=y -CONFIG_MTD_GEN_PROBE=y -CONFIG_MTD_MAP_BANK_WIDTH_1=y -CONFIG_MTD_MAP_BANK_WIDTH_2=y -CONFIG_MTD_MAP_BANK_WIDTH_4=y -CONFIG_MTD_CFI_I1=y -CONFIG_MTD_CFI_I2=y CONFIG_MTD_CFI_INTELEXT=y CONFIG_MTD_CFI_AMDSTD=y CONFIG_MTD_PHYSMAP_OF=y -CONFIG_MTD_M25P80=y -CONFIG_MTD_CFI_UTIL=y -CONFIG_MTD_NAND_ECC=y CONFIG_MTD_NAND=y -CONFIG_MTD_NAND_IDS=y CONFIG_MTD_NAND_FSL_ELBC=y CONFIG_MTD_NAND_FSL_IFC=y CONFIG_MTD_UBI=y -CONFIG_MTD_UBI_WL_THRESHOLD=4096 -CONFIG_MTD_UBI_BEB_RESERVE=1 -CONFIG_PROC_DEVICETREE=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=131072 @@ -102,6 +85,7 @@ CONFIG_INPUT_FF_MEMLESS=m # CONFIG_INPUT_KEYBOARD is not set # CONFIG_INPUT_MOUSE is not set CONFIG_SERIO_LIBPS2=y +CONFIG_PPC_EPAPR_HV_BYTECHAN=y CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_MANY_PORTS=y @@ -115,7 +99,6 @@ CONFIG_SPI_GPIO=y CONFIG_SPI_FSL_SPI=y CONFIG_SPI_FSL_ESPI=y # CONFIG_HWMON is not set -CONFIG_VIDEO_OUTPUT_CONTROL=y CONFIG_USB_HID=m CONFIG_USB=y CONFIG_USB_MON=y @@ -124,14 +107,17 @@ CONFIG_USB_EHCI_FSL=y CONFIG_USB_STORAGE=y CONFIG_MMC=y CONFIG_MMC_SDHCI=y +CONFIG_EDAC=y +CONFIG_EDAC_MM_EDAC=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_DS1307=y CONFIG_RTC_DRV_DS1374=y CONFIG_RTC_DRV_DS3232=y -CONFIG_EDAC=y -CONFIG_EDAC_MM_EDAC=y CONFIG_DMADEVICES=y CONFIG_FSL_DMA=y +CONFIG_VIRT_DRIVERS=y +CONFIG_FSL_HV_MANAGER=y +CONFIG_FSL_CORENET_CF=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y CONFIG_ISO9660_FS=m @@ -144,35 +130,24 @@ CONFIG_NTFS_FS=y CONFIG_PROC_KCORE=y CONFIG_TMPFS=y CONFIG_HUGETLBFS=y -CONFIG_MISC_FILESYSTEMS=y CONFIG_JFFS2_FS=y CONFIG_JFFS2_FS_DEBUG=1 -CONFIG_JFFS2_FS_WRITEBUFFER=y -CONFIG_JFFS2_ZLIB=y -CONFIG_JFFS2_RTIME=y CONFIG_UBIFS_FS=y -CONFIG_UBIFS_FS_XATTR=y -CONFIG_UBIFS_FS_LZO=y -CONFIG_UBIFS_FS_ZLIB=y CONFIG_NFS_FS=y CONFIG_NFS_V4=y CONFIG_ROOT_NFS=y CONFIG_NFSD=m +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_CODEPAGE_850=y CONFIG_NLS_ISO8859_1=y CONFIG_NLS_UTF8=m CONFIG_CRC_T10DIF=y -CONFIG_CRC16=y -CONFIG_ZLIB_DEFLATE=y -CONFIG_LZO_COMPRESS=y -CONFIG_LZO_DECOMPRESS=y -CONFIG_CRYPTO_DEFLATE=y -CONFIG_CRYPTO_LZO=y +CONFIG_DEBUG_INFO=y CONFIG_FRAME_WARN=1024 -CONFIG_MAGIC_SYSRQ=y CONFIG_DEBUG_FS=y +CONFIG_MAGIC_SYSRQ=y CONFIG_DEBUG_SHIRQ=y CONFIG_DETECT_HUNG_TASK=y -CONFIG_DEBUG_INFO=y CONFIG_CRYPTO_NULL=y CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_MD4=y @@ -180,4 +155,3 @@ CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_SHA512=y # CONFIG_CRYPTO_ANSI_CPRNG is not set CONFIG_CRYPTO_DEV_FSL_CAAM=y -CONFIG_FSL_CORENET_CF=y diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig index 7594c5a..6fab06f 100644 --- a/arch/powerpc/configs/g5_defconfig +++ b/arch/powerpc/configs/g5_defconfig @@ -16,6 +16,7 @@ CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y +# CONFIG_PPC_POWERNV is not set # CONFIG_PPC_PSERIES is not set CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig index c8b6a9d..fbd9e41 100644 --- a/arch/powerpc/configs/maple_defconfig +++ b/arch/powerpc/configs/maple_defconfig @@ -16,6 +16,7 @@ CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y # CONFIG_BLK_DEV_BSG is not set +# CONFIG_PPC_POWERNV is not set # CONFIG_PPC_PSERIES is not set # CONFIG_PPC_PMAC is not set CONFIG_PPC_MAPLE=y diff --git a/arch/powerpc/configs/mpc85xx_defconfig b/arch/powerpc/configs/mpc85xx_defconfig index fa1bfd3..d2c4154 100644 --- a/arch/powerpc/configs/mpc85xx_defconfig +++ b/arch/powerpc/configs/mpc85xx_defconfig @@ -213,7 +213,6 @@ CONFIG_RTC_DRV_DS1307=y CONFIG_RTC_DRV_DS1374=y CONFIG_RTC_DRV_DS3232=y CONFIG_RTC_DRV_CMOS=y -CONFIG_RTC_DRV_DS1307=y CONFIG_DMADEVICES=y CONFIG_FSL_DMA=y # CONFIG_NET_DMA is not set @@ -227,6 +226,9 @@ CONFIG_UDF_FS=m CONFIG_MSDOS_FS=m CONFIG_VFAT_FS=y CONFIG_NTFS_FS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_CODEPAGE_850=y +CONFIG_NLS_ISO8859_1=y CONFIG_PROC_KCORE=y CONFIG_TMPFS=y CONFIG_HUGETLBFS=y diff --git a/arch/powerpc/configs/mpc85xx_smp_defconfig b/arch/powerpc/configs/mpc85xx_smp_defconfig index 0b452eb..8746008 100644 --- a/arch/powerpc/configs/mpc85xx_smp_defconfig +++ b/arch/powerpc/configs/mpc85xx_smp_defconfig @@ -214,7 +214,6 @@ CONFIG_RTC_DRV_DS1307=y CONFIG_RTC_DRV_DS1374=y CONFIG_RTC_DRV_DS3232=y CONFIG_RTC_DRV_CMOS=y -CONFIG_RTC_DRV_DS1307=y CONFIG_DMADEVICES=y CONFIG_FSL_DMA=y # CONFIG_NET_DMA is not set @@ -228,6 +227,9 @@ CONFIG_UDF_FS=m CONFIG_MSDOS_FS=m CONFIG_VFAT_FS=y CONFIG_NTFS_FS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_CODEPAGE_850=y +CONFIG_NLS_ISO8859_1=y CONFIG_PROC_KCORE=y CONFIG_TMPFS=y CONFIG_HUGETLBFS=y diff --git a/arch/powerpc/configs/mpc86xx_defconfig b/arch/powerpc/configs/mpc86xx_defconfig index 35595ea..fc58aa8 100644 --- a/arch/powerpc/configs/mpc86xx_defconfig +++ b/arch/powerpc/configs/mpc86xx_defconfig @@ -145,6 +145,9 @@ CONFIG_UDF_FS=m CONFIG_MSDOS_FS=m CONFIG_VFAT_FS=y CONFIG_NTFS_FS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_CODEPAGE_850=y +CONFIG_NLS_ISO8859_1=y CONFIG_PROC_KCORE=y CONFIG_TMPFS=y CONFIG_ADFS_FS=m diff --git a/arch/powerpc/configs/pasemi_defconfig b/arch/powerpc/configs/pasemi_defconfig index e5e7838..3e72c8c 100644 --- a/arch/powerpc/configs/pasemi_defconfig +++ b/arch/powerpc/configs/pasemi_defconfig @@ -14,6 +14,7 @@ CONFIG_MODULE_UNLOAD=y # CONFIG_BLK_DEV_BSG is not set CONFIG_PARTITION_ADVANCED=y CONFIG_MAC_PARTITION=y +# CONFIG_PPC_POWERNV is not set # CONFIG_PPC_PSERIES is not set # CONFIG_PPC_PMAC is not set CONFIG_PPC_PASEMI=y diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig index 3651887..20bc5e2 100644 --- a/arch/powerpc/configs/ppc64_defconfig +++ b/arch/powerpc/configs/ppc64_defconfig @@ -50,6 +50,7 @@ CONFIG_HZ_100=y CONFIG_BINFMT_MISC=m CONFIG_PPC_TRANSACTIONAL_MEM=y CONFIG_KEXEC=y +CONFIG_CRASH_DUMP=y CONFIG_IRQ_ALL_CPUS=y CONFIG_MEMORY_HOTREMOVE=y CONFIG_SCHED_SMT=y diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h index 3eb53d74..3a39283 100644 --- a/arch/powerpc/include/asm/bug.h +++ b/arch/powerpc/include/asm/bug.h @@ -133,7 +133,6 @@ extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long); extern void bad_page_fault(struct pt_regs *, unsigned long, int); extern void _exception(int, struct pt_regs *, int, unsigned long); extern void die(const char *, struct pt_regs *, long); -extern void print_backtrace(unsigned long *); #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/copro.h b/arch/powerpc/include/asm/copro.h new file mode 100644 index 0000000..ce216df --- /dev/null +++ b/arch/powerpc/include/asm/copro.h @@ -0,0 +1,29 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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. + */ + +#ifndef _ASM_POWERPC_COPRO_H +#define _ASM_POWERPC_COPRO_H + +struct copro_slb +{ + u64 esid, vsid; +}; + +int copro_handle_mm_fault(struct mm_struct *mm, unsigned long ea, + unsigned long dsisr, unsigned *flt); + +int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb); + + +#ifdef CONFIG_PPC_COPRO_BASE +void copro_flush_all_slbs(struct mm_struct *mm); +#else +static inline void copro_flush_all_slbs(struct mm_struct *mm) {} +#endif +#endif /* _ASM_POWERPC_COPRO_H */ diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 150866b..894d538 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -135,6 +135,7 @@ static inline int dma_supported(struct device *dev, u64 mask) extern int dma_set_mask(struct device *dev, u64 dma_mask); extern int __dma_set_mask(struct device *dev, u64 dma_mask); +extern u64 __dma_get_required_mask(struct device *dev); #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 9983c3d..3b260ef 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -146,6 +146,11 @@ static inline struct pci_dev *eeh_dev_to_pci_dev(struct eeh_dev *edev) return edev ? edev->pdev : NULL; } +static inline struct eeh_pe *eeh_dev_to_pe(struct eeh_dev* edev) +{ + return edev ? edev->pe : NULL; +} + /* Return values from eeh_ops::next_error */ enum { EEH_NEXT_ERR_NONE = 0, @@ -167,6 +172,7 @@ enum { #define EEH_OPT_ENABLE 1 /* EEH enable */ #define EEH_OPT_THAW_MMIO 2 /* MMIO enable */ #define EEH_OPT_THAW_DMA 3 /* DMA enable */ +#define EEH_OPT_FREEZE_PE 4 /* Freeze PE */ #define EEH_STATE_UNAVAILABLE (1 << 0) /* State unavailable */ #define EEH_STATE_NOT_SUPPORT (1 << 1) /* EEH not supported */ #define EEH_STATE_RESET_ACTIVE (1 << 2) /* Active reset */ @@ -198,6 +204,8 @@ struct eeh_ops { int (*wait_state)(struct eeh_pe *pe, int max_wait); int (*get_log)(struct eeh_pe *pe, int severity, char *drv_log, unsigned long len); int (*configure_bridge)(struct eeh_pe *pe); + int (*err_inject)(struct eeh_pe *pe, int type, int func, + unsigned long addr, unsigned long mask); int (*read_config)(struct device_node *dn, int where, int size, u32 *val); int (*write_config)(struct device_node *dn, int where, int size, u32 val); int (*next_error)(struct eeh_pe **pe); @@ -269,8 +277,7 @@ void eeh_dev_phb_init_dynamic(struct pci_controller *phb); int eeh_init(void); int __init eeh_ops_register(struct eeh_ops *ops); int __exit eeh_ops_unregister(const char *name); -unsigned long eeh_check_failure(const volatile void __iomem *token, - unsigned long val); +int eeh_check_failure(const volatile void __iomem *token); int eeh_dev_check_failure(struct eeh_dev *edev); void eeh_addr_cache_build(void); void eeh_add_device_early(struct device_node *); @@ -279,6 +286,8 @@ void eeh_add_device_late(struct pci_dev *); void eeh_add_device_tree_late(struct pci_bus *); void eeh_add_sysfs_files(struct pci_bus *); void eeh_remove_device(struct pci_dev *); +int eeh_unfreeze_pe(struct eeh_pe *pe, bool sw_state); +int eeh_pe_reset_and_recover(struct eeh_pe *pe); int eeh_dev_open(struct pci_dev *pdev); void eeh_dev_release(struct pci_dev *pdev); struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group); @@ -321,9 +330,9 @@ static inline void *eeh_dev_init(struct device_node *dn, void *data) static inline void eeh_dev_phb_init_dynamic(struct pci_controller *phb) { } -static inline unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned long val) +static inline int eeh_check_failure(const volatile void __iomem *token) { - return val; + return 0; } #define eeh_dev_check_failure(x) (0) @@ -354,7 +363,7 @@ static inline u8 eeh_readb(const volatile void __iomem *addr) { u8 val = in_8(addr); if (EEH_POSSIBLE_ERROR(val, u8)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -362,7 +371,7 @@ static inline u16 eeh_readw(const volatile void __iomem *addr) { u16 val = in_le16(addr); if (EEH_POSSIBLE_ERROR(val, u16)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -370,7 +379,7 @@ static inline u32 eeh_readl(const volatile void __iomem *addr) { u32 val = in_le32(addr); if (EEH_POSSIBLE_ERROR(val, u32)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -378,7 +387,7 @@ static inline u64 eeh_readq(const volatile void __iomem *addr) { u64 val = in_le64(addr); if (EEH_POSSIBLE_ERROR(val, u64)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -386,7 +395,7 @@ static inline u16 eeh_readw_be(const volatile void __iomem *addr) { u16 val = in_be16(addr); if (EEH_POSSIBLE_ERROR(val, u16)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -394,7 +403,7 @@ static inline u32 eeh_readl_be(const volatile void __iomem *addr) { u32 val = in_be32(addr); if (EEH_POSSIBLE_ERROR(val, u32)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -402,7 +411,7 @@ static inline u64 eeh_readq_be(const volatile void __iomem *addr) { u64 val = in_be64(addr); if (EEH_POSSIBLE_ERROR(val, u64)) - return eeh_check_failure(addr, val); + eeh_check_failure(addr); return val; } @@ -416,7 +425,7 @@ static inline void eeh_memcpy_fromio(void *dest, const * were copied. Check all four bytes. */ if (n >= 4 && EEH_POSSIBLE_ERROR(*((u32 *)(dest + n - 4)), u32)) - eeh_check_failure(src, *((u32 *)(dest + n - 4))); + eeh_check_failure(src); } /* in-string eeh macros */ @@ -425,7 +434,7 @@ static inline void eeh_readsb(const volatile void __iomem *addr, void * buf, { _insb(addr, buf, ns); if (EEH_POSSIBLE_ERROR((*(((u8*)buf)+ns-1)), u8)) - eeh_check_failure(addr, *(u8*)buf); + eeh_check_failure(addr); } static inline void eeh_readsw(const volatile void __iomem *addr, void * buf, @@ -433,7 +442,7 @@ static inline void eeh_readsw(const volatile void __iomem *addr, void * buf, { _insw(addr, buf, ns); if (EEH_POSSIBLE_ERROR((*(((u16*)buf)+ns-1)), u16)) - eeh_check_failure(addr, *(u16*)buf); + eeh_check_failure(addr); } static inline void eeh_readsl(const volatile void __iomem *addr, void * buf, @@ -441,7 +450,7 @@ static inline void eeh_readsl(const volatile void __iomem *addr, void * buf, { _insl(addr, buf, nl); if (EEH_POSSIBLE_ERROR((*(((u32*)buf)+nl-1)), u32)) - eeh_check_failure(addr, *(u32*)buf); + eeh_check_failure(addr); } #endif /* CONFIG_PPC64 */ diff --git a/arch/powerpc/include/asm/hydra.h b/arch/powerpc/include/asm/hydra.h index 5b0c98bd..1cb39c9 100644 --- a/arch/powerpc/include/asm/hydra.h +++ b/arch/powerpc/include/asm/hydra.h @@ -95,7 +95,6 @@ extern volatile struct Hydra __iomem *Hydra; #define HYDRA_INT_SPARE 19 extern int hydra_init(void); -extern void macio_adb_init(void); #endif /* __KERNEL__ */ diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h index 41f13ce..e8e3a0a 100644 --- a/arch/powerpc/include/asm/irq.h +++ b/arch/powerpc/include/asm/irq.h @@ -31,11 +31,6 @@ extern atomic_t ppc_n_lost_interrupts; extern irq_hw_number_t virq_to_hw(unsigned int virq); -/** - * irq_early_init - Init irq remapping subsystem - */ -extern void irq_early_init(void); - static __inline__ int irq_canonicalize(int irq) { return irq; diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h index 16d7e33..19c36cb 100644 --- a/arch/powerpc/include/asm/kexec.h +++ b/arch/powerpc/include/asm/kexec.h @@ -81,7 +81,6 @@ extern void default_machine_crash_shutdown(struct pt_regs *regs); extern int crash_shutdown_register(crash_shutdown_t handler); extern int crash_shutdown_unregister(crash_shutdown_t handler); -extern void machine_kexec_simple(struct kimage *image); extern void crash_kexec_secondary(struct pt_regs *regs); extern int overlaps_crashkernel(unsigned long start, unsigned long size); extern void reserve_crashkernel(void); diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 3af7216..307347f 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -328,8 +328,6 @@ extern struct machdep_calls *machine_id; extern void probe_machine(void); -extern char cmd_line[COMMAND_LINE_SIZE]; - #ifdef CONFIG_PPC_PMAC /* * Power macintoshes have either a CUDA, PMU or SMU controlling diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index d765144..aeebc94 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -190,6 +190,13 @@ static inline unsigned int mmu_psize_to_shift(unsigned int mmu_psize) #ifndef __ASSEMBLY__ +static inline int slb_vsid_shift(int ssize) +{ + if (ssize == MMU_SEGSIZE_256M) + return SLB_VSID_SHIFT; + return SLB_VSID_SHIFT_1T; +} + static inline int segment_shift(int ssize) { if (ssize == MMU_SEGSIZE_256M) @@ -317,6 +324,7 @@ extern int __hash_page_64K(unsigned long ea, unsigned long access, unsigned int local, int ssize); struct mm_struct; unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap); +extern int hash_page_mm(struct mm_struct *mm, unsigned long ea, unsigned long access, unsigned long trap); extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap); int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, pte_t *ptep, unsigned long trap, int local, int ssize, @@ -342,6 +350,8 @@ extern void hash_failure_debug(unsigned long ea, unsigned long access, extern int htab_bolt_mapping(unsigned long vstart, unsigned long vend, unsigned long pstart, unsigned long prot, int psize, int ssize); +int htab_remove_mapping(unsigned long vstart, unsigned long vend, + int psize, int ssize); extern void add_gpage(u64 addr, u64 page_size, unsigned long number_of_pages); extern void demote_segment_4k(struct mm_struct *mm, unsigned long addr); diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 86055e5..9124b0e 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -135,6 +135,7 @@ struct opal_sg_list { #define OPAL_FLASH_MANAGE 77 #define OPAL_FLASH_UPDATE 78 #define OPAL_RESYNC_TIMEBASE 79 +#define OPAL_CHECK_TOKEN 80 #define OPAL_DUMP_INIT 81 #define OPAL_DUMP_INFO 82 #define OPAL_DUMP_READ 83 @@ -146,7 +147,9 @@ struct opal_sg_list { #define OPAL_GET_PARAM 89 #define OPAL_SET_PARAM 90 #define OPAL_DUMP_RESEND 91 +#define OPAL_PCI_SET_PHB_CXL_MODE 93 #define OPAL_DUMP_INFO2 94 +#define OPAL_PCI_ERR_INJECT 96 #define OPAL_PCI_EEH_FREEZE_SET 97 #define OPAL_HANDLE_HMI 98 #define OPAL_REGISTER_DUMP_REGION 101 @@ -199,6 +202,35 @@ enum OpalPciErrorSeverity { OPAL_EEH_SEV_INF = 5 }; +enum OpalErrinjectType { + OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR = 0, + OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64 = 1, +}; + +enum OpalErrinjectFunc { + /* IOA bus specific errors */ + OPAL_ERR_INJECT_FUNC_IOA_LD_MEM_ADDR = 0, + OPAL_ERR_INJECT_FUNC_IOA_LD_MEM_DATA = 1, + OPAL_ERR_INJECT_FUNC_IOA_LD_IO_ADDR = 2, + OPAL_ERR_INJECT_FUNC_IOA_LD_IO_DATA = 3, + OPAL_ERR_INJECT_FUNC_IOA_LD_CFG_ADDR = 4, + OPAL_ERR_INJECT_FUNC_IOA_LD_CFG_DATA = 5, + OPAL_ERR_INJECT_FUNC_IOA_ST_MEM_ADDR = 6, + OPAL_ERR_INJECT_FUNC_IOA_ST_MEM_DATA = 7, + OPAL_ERR_INJECT_FUNC_IOA_ST_IO_ADDR = 8, + OPAL_ERR_INJECT_FUNC_IOA_ST_IO_DATA = 9, + OPAL_ERR_INJECT_FUNC_IOA_ST_CFG_ADDR = 10, + OPAL_ERR_INJECT_FUNC_IOA_ST_CFG_DATA = 11, + OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_ADDR = 12, + OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_DATA = 13, + OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_MASTER = 14, + OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_TARGET = 15, + OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_ADDR = 16, + OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_DATA = 17, + OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_MASTER = 18, + OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_TARGET = 19, +}; + enum OpalShpcAction { OPAL_SHPC_GET_LINK_STATE = 0, OPAL_SHPC_GET_SLOT_STATE = 1 @@ -356,9 +388,12 @@ enum OpalM64EnableAction { }; enum OpalPciResetScope { - OPAL_PHB_COMPLETE = 1, OPAL_PCI_LINK = 2, OPAL_PHB_ERROR = 3, - OPAL_PCI_HOT_RESET = 4, OPAL_PCI_FUNDAMENTAL_RESET = 5, - OPAL_PCI_IODA_TABLE_RESET = 6, + OPAL_RESET_PHB_COMPLETE = 1, + OPAL_RESET_PCI_LINK = 2, + OPAL_RESET_PHB_ERROR = 3, + OPAL_RESET_PCI_HOT = 4, + OPAL_RESET_PCI_FUNDAMENTAL = 5, + OPAL_RESET_PCI_IODA_TABLE = 6 }; enum OpalPciReinitScope { @@ -819,6 +854,8 @@ int64_t opal_pci_eeh_freeze_clear(uint64_t phb_id, uint64_t pe_number, uint64_t eeh_action_token); int64_t opal_pci_eeh_freeze_set(uint64_t phb_id, uint64_t pe_number, uint64_t eeh_action_token); +int64_t opal_pci_err_inject(uint64_t phb_id, uint32_t pe_no, uint32_t type, + uint32_t func, uint64_t addr, uint64_t mask); int64_t opal_pci_shpc(uint64_t phb_id, uint64_t shpc_action, uint8_t *state); @@ -887,6 +924,7 @@ int64_t opal_pci_next_error(uint64_t phb_id, __be64 *first_frozen_pe, __be16 *pci_error_type, __be16 *severity); int64_t opal_pci_poll(uint64_t phb_id); int64_t opal_return_cpu(void); +int64_t opal_check_token(uint64_t token); int64_t opal_reinit_cpus(uint64_t flags); int64_t opal_xscom_read(uint32_t gcid, uint64_t pcb_addr, __be64 *val); @@ -924,6 +962,7 @@ int64_t opal_sensor_read(uint32_t sensor_hndl, int token, __be32 *sensor_data); int64_t opal_handle_hmi(void); int64_t opal_register_dump_region(uint32_t id, uint64_t start, uint64_t end); int64_t opal_unregister_dump_region(uint32_t id); +int64_t opal_pci_set_phb_cxl_mode(uint64_t phb_id, uint64_t mode, uint64_t pe_number); /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h index 88693ce..d908a46 100644 --- a/arch/powerpc/include/asm/page_64.h +++ b/arch/powerpc/include/asm/page_64.h @@ -42,20 +42,40 @@ typedef unsigned long pte_basic_t; -static __inline__ void clear_page(void *addr) +static inline void clear_page(void *addr) { - unsigned long lines, line_size; - - line_size = ppc64_caches.dline_size; - lines = ppc64_caches.dlines_per_page; - - __asm__ __volatile__( + unsigned long iterations; + unsigned long onex, twox, fourx, eightx; + + iterations = ppc64_caches.dlines_per_page / 8; + + /* + * Some verisions of gcc use multiply instructions to + * calculate the offsets so lets give it a hand to + * do better. + */ + onex = ppc64_caches.dline_size; + twox = onex << 1; + fourx = onex << 2; + eightx = onex << 3; + + asm volatile( "mtctr %1 # clear_page\n\ -1: dcbz 0,%0\n\ - add %0,%0,%3\n\ + .balign 16\n\ +1: dcbz 0,%0\n\ + dcbz %3,%0\n\ + dcbz %4,%0\n\ + dcbz %5,%0\n\ + dcbz %6,%0\n\ + dcbz %7,%0\n\ + dcbz %8,%0\n\ + dcbz %9,%0\n\ + add %0,%0,%10\n\ bdnz+ 1b" - : "=r" (addr) - : "r" (lines), "0" (addr), "r" (line_size) + : "=&r" (addr) + : "r" (iterations), "0" (addr), "b" (onex), "b" (twox), + "b" (twox+onex), "b" (fourx), "b" (fourx+onex), + "b" (twox+fourx), "b" (eightx-onex), "r" (eightx) : "ctr", "memory"); } @@ -104,7 +124,6 @@ extern unsigned long slice_get_unmapped_area(unsigned long addr, extern unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr); -extern void slice_init_context(struct mm_struct *mm, unsigned int psize); extern void slice_set_user_psize(struct mm_struct *mm, unsigned int psize); extern void slice_set_range_psize(struct mm_struct *mm, unsigned long start, unsigned long len, unsigned int psize); diff --git a/arch/powerpc/include/asm/pgtable-ppc32.h b/arch/powerpc/include/asm/pgtable-ppc32.h index 47edde8..945e47a 100644 --- a/arch/powerpc/include/asm/pgtable-ppc32.h +++ b/arch/powerpc/include/asm/pgtable-ppc32.h @@ -8,8 +8,6 @@ #include <linux/threads.h> #include <asm/io.h> /* For sub-arch specific PPC_PIN_SIZE */ -extern unsigned long va_to_phys(unsigned long address); -extern pte_t *va_to_pte(unsigned long address); extern unsigned long ioremap_bot; #ifdef CONFIG_44x @@ -50,10 +48,10 @@ extern int icache_44x_need_flush; #define FIRST_USER_ADDRESS 0 #define pte_ERROR(e) \ - printk("%s:%d: bad pte %llx.\n", __FILE__, __LINE__, \ + pr_err("%s:%d: bad pte %llx.\n", __FILE__, __LINE__, \ (unsigned long long)pte_val(e)) #define pgd_ERROR(e) \ - printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) + pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) /* * This is the bottom of the PKMAP area with HIGHMEM or an arbitrary diff --git a/arch/powerpc/include/asm/pgtable-ppc64-4k.h b/arch/powerpc/include/asm/pgtable-ppc64-4k.h index 12798c9..7b93568 100644 --- a/arch/powerpc/include/asm/pgtable-ppc64-4k.h +++ b/arch/powerpc/include/asm/pgtable-ppc64-4k.h @@ -64,7 +64,7 @@ (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))) #define pud_ERROR(e) \ - printk("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e)) + pr_err("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e)) /* * On all 4K setups, remap_4k_pfn() equates to remap_pfn_range() */ diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h index 7b3d54f..ae153c4 100644 --- a/arch/powerpc/include/asm/pgtable-ppc64.h +++ b/arch/powerpc/include/asm/pgtable-ppc64.h @@ -328,11 +328,11 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry) #define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HPTEFLAGS) == 0) #define pte_ERROR(e) \ - printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) + pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) #define pmd_ERROR(e) \ - printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e)) + pr_err("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e)) #define pgd_ERROR(e) \ - printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) + pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) /* Encode and de-code a swap entry */ #define __swp_type(entry) (((entry).val >> 1) & 0x3f) diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index f60d4ea..316f9a5 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -4,6 +4,7 @@ #ifndef __ASSEMBLY__ #include <linux/mmdebug.h> +#include <linux/mmzone.h> #include <asm/processor.h> /* For TASK_SIZE */ #include <asm/mmu.h> #include <asm/page.h> @@ -248,6 +249,8 @@ extern unsigned long empty_zero_page[]; extern pgd_t swapper_pg_dir[]; +void limit_zone_pfn(enum zone_type zone, unsigned long max_pfn); +int dma_pfn_limit_to_zone(u64 pfn_limit); extern void paging_init(void); /* diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h index 12c32c5..67859ed 100644 --- a/arch/powerpc/include/asm/plpar_wrappers.h +++ b/arch/powerpc/include/asm/plpar_wrappers.h @@ -273,7 +273,7 @@ static inline long plpar_set_mode(unsigned long mflags, unsigned long resource, static inline long enable_reloc_on_exceptions(void) { /* mflags = 3: Exceptions at 0xC000000000004000 */ - return plpar_set_mode(3, 3, 0, 0); + return plpar_set_mode(3, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0); } /* @@ -284,7 +284,7 @@ static inline long enable_reloc_on_exceptions(void) * returns H_SUCCESS. */ static inline long disable_reloc_on_exceptions(void) { - return plpar_set_mode(0, 3, 0, 0); + return plpar_set_mode(0, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0); } /* @@ -297,7 +297,7 @@ static inline long disable_reloc_on_exceptions(void) { static inline long enable_big_endian_exceptions(void) { /* mflags = 0: big endian exceptions */ - return plpar_set_mode(0, 4, 0, 0); + return plpar_set_mode(0, H_SET_MODE_RESOURCE_LE, 0, 0); } /* @@ -310,17 +310,17 @@ static inline long enable_big_endian_exceptions(void) static inline long enable_little_endian_exceptions(void) { /* mflags = 1: little endian exceptions */ - return plpar_set_mode(1, 4, 0, 0); + return plpar_set_mode(1, H_SET_MODE_RESOURCE_LE, 0, 0); } static inline long plapr_set_ciabr(unsigned long ciabr) { - return plpar_set_mode(0, 1, ciabr, 0); + return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_CIABR, ciabr, 0); } static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawrx0) { - return plpar_set_mode(0, 2, dawr0, dawrx0); + return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0); } #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */ diff --git a/arch/powerpc/include/asm/pnv-pci.h b/arch/powerpc/include/asm/pnv-pci.h new file mode 100644 index 0000000..f09a22f --- /dev/null +++ b/arch/powerpc/include/asm/pnv-pci.h @@ -0,0 +1,31 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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. + */ + +#ifndef _ASM_PNV_PCI_H +#define _ASM_PNV_PCI_H + +#include <linux/pci.h> +#include <misc/cxl.h> + +int pnv_phb_to_cxl(struct pci_dev *dev); +int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq, + unsigned int virq); +int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num); +void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num); +int pnv_cxl_get_irq_count(struct pci_dev *dev); +struct device_node *pnv_pci_to_phb_node(struct pci_dev *dev); + +#ifdef CONFIG_CXL_BASE +int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, + struct pci_dev *dev, int num); +void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs, + struct pci_dev *dev); +#endif + +#endif diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index 74b79f0..7f436ba 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -76,8 +76,6 @@ void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window, unsigned long *busno, unsigned long *phys, unsigned long *size); -extern void kdump_move_device_tree(void); - extern void of_instantiate_rtc(void); extern int of_get_ibm_chip_id(struct device_node *np); diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 0c05059..fe3f948 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -947,7 +947,7 @@ * 32-bit 8xx: * - SPRG0 scratch for exception vectors * - SPRG1 scratch for exception vectors - * - SPRG2 apparently unused but initialized + * - SPRG2 scratch for exception vectors * */ #ifdef CONFIG_PPC64 @@ -1057,6 +1057,7 @@ #ifdef CONFIG_8xx #define SPRN_SPRG_SCRATCH0 SPRN_SPRG0 #define SPRN_SPRG_SCRATCH1 SPRN_SPRG1 +#define SPRN_SPRG_SCRATCH2 SPRN_SPRG2 #endif diff --git a/arch/powerpc/include/asm/rio.h b/arch/powerpc/include/asm/rio.h index b1d2dec..ec800f2 100644 --- a/arch/powerpc/include/asm/rio.h +++ b/arch/powerpc/include/asm/rio.h @@ -13,7 +13,6 @@ #ifndef ASM_PPC_RIO_H #define ASM_PPC_RIO_H -extern void platform_rio_init(void); #ifdef CONFIG_FSL_RIO extern int fsl_rio_mcheck_exception(struct pt_regs *); #else diff --git a/arch/powerpc/include/asm/spu.h b/arch/powerpc/include/asm/spu.h index 37b7ca3..a6e6e2b 100644 --- a/arch/powerpc/include/asm/spu.h +++ b/arch/powerpc/include/asm/spu.h @@ -27,6 +27,8 @@ #include <linux/workqueue.h> #include <linux/device.h> #include <linux/mutex.h> +#include <asm/reg.h> +#include <asm/copro.h> #define LS_SIZE (256 * 1024) #define LS_ADDR_MASK (LS_SIZE - 1) @@ -277,9 +279,6 @@ void spu_remove_dev_attr(struct device_attribute *attr); int spu_add_dev_attr_group(struct attribute_group *attrs); void spu_remove_dev_attr_group(struct attribute_group *attrs); -int spu_handle_mm_fault(struct mm_struct *mm, unsigned long ea, - unsigned long dsisr, unsigned *flt); - /* * Notifier blocks: * diff --git a/arch/powerpc/include/asm/sstep.h b/arch/powerpc/include/asm/sstep.h index f593b0f..d3a42cc 100644 --- a/arch/powerpc/include/asm/sstep.h +++ b/arch/powerpc/include/asm/sstep.h @@ -25,3 +25,65 @@ struct pt_regs; /* Emulate instructions that cause a transfer of control. */ extern int emulate_step(struct pt_regs *regs, unsigned int instr); + +enum instruction_type { + COMPUTE, /* arith/logical/CR op, etc. */ + LOAD, + LOAD_MULTI, + LOAD_FP, + LOAD_VMX, + LOAD_VSX, + STORE, + STORE_MULTI, + STORE_FP, + STORE_VMX, + STORE_VSX, + LARX, + STCX, + BRANCH, + MFSPR, + MTSPR, + CACHEOP, + BARRIER, + SYSCALL, + MFMSR, + MTMSR, + RFI, + INTERRUPT, + UNKNOWN +}; + +#define INSTR_TYPE_MASK 0x1f + +/* Load/store flags, ORed in with type */ +#define SIGNEXT 0x20 +#define UPDATE 0x40 /* matches bit in opcode 31 instructions */ +#define BYTEREV 0x80 + +/* Cacheop values, ORed in with type */ +#define CACHEOP_MASK 0x700 +#define DCBST 0 +#define DCBF 0x100 +#define DCBTST 0x200 +#define DCBT 0x300 +#define ICBI 0x400 + +/* Size field in type word */ +#define SIZE(n) ((n) << 8) +#define GETSIZE(w) ((w) >> 8) + +#define MKOP(t, f, s) ((t) | (f) | SIZE(s)) + +struct instruction_op { + int type; + int reg; + unsigned long val; + /* For LOAD/STORE/LARX/STCX */ + unsigned long ea; + int update_reg; + /* For MFSPR */ + int spr; +}; + +extern int analyse_instr(struct instruction_op *op, struct pt_regs *regs, + unsigned int instr); diff --git a/arch/powerpc/include/asm/tsi108.h b/arch/powerpc/include/asm/tsi108.h index f8b6079..d531d9e 100644 --- a/arch/powerpc/include/asm/tsi108.h +++ b/arch/powerpc/include/asm/tsi108.h @@ -84,10 +84,6 @@ extern u32 tsi108_pci_cfg_base; /* Exported functions */ -extern int tsi108_bridge_init(struct pci_controller *hose, uint phys_csr_base); -extern unsigned long tsi108_get_mem_size(void); -extern unsigned long tsi108_get_cpu_clk(void); -extern unsigned long tsi108_get_sdc_clk(void); extern int tsi108_direct_write_config(struct pci_bus *bus, unsigned int devfn, int offset, int len, u32 val); extern int tsi108_direct_read_config(struct pci_bus *bus, unsigned int devfn, diff --git a/arch/powerpc/include/asm/udbg.h b/arch/powerpc/include/asm/udbg.h index b51fba1..78f2675 100644 --- a/arch/powerpc/include/asm/udbg.h +++ b/arch/powerpc/include/asm/udbg.h @@ -52,7 +52,6 @@ extern void __init udbg_init_44x_as1(void); extern void __init udbg_init_40x_realmode(void); extern void __init udbg_init_cpm(void); extern void __init udbg_init_usbgecko(void); -extern void __init udbg_init_wsp(void); extern void __init udbg_init_memcons(void); extern void __init udbg_init_ehv_bc(void); extern void __init udbg_init_ps3gelic(void); diff --git a/arch/powerpc/include/asm/word-at-a-time.h b/arch/powerpc/include/asm/word-at-a-time.h index 9a5c928..5b3a903 100644 --- a/arch/powerpc/include/asm/word-at-a-time.h +++ b/arch/powerpc/include/asm/word-at-a-time.h @@ -42,32 +42,65 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct #else +#ifdef CONFIG_64BIT + +/* unused */ struct word_at_a_time { - const unsigned long one_bits, high_bits; }; -#define WORD_AT_A_TIME_CONSTANTS { REPEAT_BYTE(0x01), REPEAT_BYTE(0x80) } +#define WORD_AT_A_TIME_CONSTANTS { } -#ifdef CONFIG_64BIT +/* This will give us 0xff for a NULL char and 0x00 elsewhere */ +static inline unsigned long has_zero(unsigned long a, unsigned long *bits, const struct word_at_a_time *c) +{ + unsigned long ret; + unsigned long zero = 0; -/* Alan Modra's little-endian strlen tail for 64-bit */ -#define create_zero_mask(mask) (mask) + asm("cmpb %0,%1,%2" : "=r" (ret) : "r" (a), "r" (zero)); + *bits = ret; -static inline unsigned long find_zero(unsigned long mask) + return ret; +} + +static inline unsigned long prep_zero_mask(unsigned long a, unsigned long bits, const struct word_at_a_time *c) +{ + return bits; +} + +/* Alan Modra's little-endian strlen tail for 64-bit */ +static inline unsigned long create_zero_mask(unsigned long bits) { unsigned long leading_zero_bits; long trailing_zero_bit_mask; - asm ("addi %1,%2,-1\n\t" - "andc %1,%1,%2\n\t" - "popcntd %0,%1" - : "=r" (leading_zero_bits), "=&r" (trailing_zero_bit_mask) - : "r" (mask)); - return leading_zero_bits >> 3; + asm("addi %1,%2,-1\n\t" + "andc %1,%1,%2\n\t" + "popcntd %0,%1" + : "=r" (leading_zero_bits), "=&r" (trailing_zero_bit_mask) + : "r" (bits)); + + return leading_zero_bits; +} + +static inline unsigned long find_zero(unsigned long mask) +{ + return mask >> 3; +} + +/* This assumes that we never ask for an all 1s bitmask */ +static inline unsigned long zero_bytemask(unsigned long mask) +{ + return (1UL << mask) - 1; } #else /* 32-bit case */ +struct word_at_a_time { + const unsigned long one_bits, high_bits; +}; + +#define WORD_AT_A_TIME_CONSTANTS { REPEAT_BYTE(0x01), REPEAT_BYTE(0x80) } + /* * This is largely generic for little-endian machines, but the * optimal byte mask counting is probably going to be something @@ -96,8 +129,6 @@ static inline unsigned long find_zero(unsigned long mask) return count_masked_bytes(mask); } -#endif - /* Return nonzero if it has a zero */ static inline unsigned long has_zero(unsigned long a, unsigned long *bits, const struct word_at_a_time *c) { @@ -114,6 +145,59 @@ static inline unsigned long prep_zero_mask(unsigned long a, unsigned long bits, /* The mask we created is directly usable as a bytemask */ #define zero_bytemask(mask) (mask) +#endif /* CONFIG_64BIT */ + +#endif /* __BIG_ENDIAN__ */ + +/* + * We use load_unaligned_zero() in a selftest, which builds a userspace + * program. Some linker scripts seem to discard the .fixup section, so allow + * the test code to use a different section name. + */ +#ifndef FIXUP_SECTION +#define FIXUP_SECTION ".fixup" +#endif + +static inline unsigned long load_unaligned_zeropad(const void *addr) +{ + unsigned long ret, offset, tmp; + + asm( + "1: " PPC_LL "%[ret], 0(%[addr])\n" + "2:\n" + ".section " FIXUP_SECTION ",\"ax\"\n" + "3: " +#ifdef __powerpc64__ + "clrrdi %[tmp], %[addr], 3\n\t" + "clrlsldi %[offset], %[addr], 61, 3\n\t" + "ld %[ret], 0(%[tmp])\n\t" +#ifdef __BIG_ENDIAN__ + "sld %[ret], %[ret], %[offset]\n\t" +#else + "srd %[ret], %[ret], %[offset]\n\t" #endif +#else + "clrrwi %[tmp], %[addr], 2\n\t" + "clrlslwi %[offset], %[addr], 30, 3\n\t" + "lwz %[ret], 0(%[tmp])\n\t" +#ifdef __BIG_ENDIAN__ + "slw %[ret], %[ret], %[offset]\n\t" +#else + "srw %[ret], %[ret], %[offset]\n\t" +#endif +#endif + "b 2b\n" + ".previous\n" + ".section __ex_table,\"a\"\n\t" + PPC_LONG_ALIGN "\n\t" + PPC_LONG "1b,3b\n" + ".previous" + : [tmp] "=&b" (tmp), [offset] "=&r" (offset), [ret] "=&r" (ret) + : [addr] "b" (addr), "m" (*(unsigned long *)addr)); + + return ret; +} + +#undef FIXUP_SECTION #endif /* _ASM_WORD_AT_A_TIME_H */ diff --git a/arch/powerpc/include/asm/xics.h b/arch/powerpc/include/asm/xics.h index 282d43a..0d050ea 100644 --- a/arch/powerpc/include/asm/xics.h +++ b/arch/powerpc/include/asm/xics.h @@ -29,6 +29,7 @@ /* Native ICP */ #ifdef CONFIG_PPC_ICP_NATIVE extern int icp_native_init(void); +extern void icp_native_flush_interrupt(void); #else static inline int icp_native_init(void) { return -ENODEV; } #endif diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 670c312..502cf69 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -93,6 +93,9 @@ obj-$(CONFIG_PPC32) += entry_32.o setup_32.o obj-$(CONFIG_PPC64) += dma-iommu.o iommu.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_MODULES) += ppc_ksyms.o +ifeq ($(CONFIG_PPC32),y) +obj-$(CONFIG_MODULES) += ppc_ksyms_32.o +endif obj-$(CONFIG_BOOTX_TEXT) += btext.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_KPROBES) += kprobes.o diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c index 7a13f37..c78e6da 100644 --- a/arch/powerpc/kernel/crash_dump.c +++ b/arch/powerpc/kernel/crash_dump.c @@ -13,6 +13,7 @@ #include <linux/crash_dump.h> #include <linux/bootmem.h> +#include <linux/io.h> #include <linux/memblock.h> #include <asm/code-patching.h> #include <asm/kdump.h> diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index bd1a2ab..7359797 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -106,10 +106,14 @@ int __init swiotlb_setup_bus_notifier(void) return 0; } -void swiotlb_detect_4g(void) +void __init swiotlb_detect_4g(void) { - if ((memblock_end_of_DRAM() - 1) > 0xffffffff) + if ((memblock_end_of_DRAM() - 1) > 0xffffffff) { ppc_swiotlb_enable = 1; +#ifdef CONFIG_ZONE_DMA32 + limit_zone_pfn(ZONE_DMA32, (1ULL << 32) >> PAGE_SHIFT); +#endif + } } static int __init swiotlb_late_init(void) diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index ee78f6e..adac9dc 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -15,6 +15,7 @@ #include <asm/vio.h> #include <asm/bug.h> #include <asm/machdep.h> +#include <asm/swiotlb.h> /* * Generic direct DMA implementation @@ -25,6 +26,18 @@ * default the offset is PCI_DRAM_OFFSET. */ +static u64 __maybe_unused get_pfn_limit(struct device *dev) +{ + u64 pfn = (dev->coherent_dma_mask >> PAGE_SHIFT) + 1; + struct dev_archdata __maybe_unused *sd = &dev->archdata; + +#ifdef CONFIG_SWIOTLB + if (sd->max_direct_dma_addr && sd->dma_ops == &swiotlb_dma_ops) + pfn = min_t(u64, pfn, sd->max_direct_dma_addr >> PAGE_SHIFT); +#endif + + return pfn; +} void *dma_direct_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag, @@ -40,6 +53,26 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size, #else struct page *page; int node = dev_to_node(dev); + u64 pfn = get_pfn_limit(dev); + int zone; + + zone = dma_pfn_limit_to_zone(pfn); + if (zone < 0) { + dev_err(dev, "%s: No suitable zone for pfn %#llx\n", + __func__, pfn); + return NULL; + } + + switch (zone) { + case ZONE_DMA: + flag |= GFP_DMA; + break; +#ifdef CONFIG_ZONE_DMA32 + case ZONE_DMA32: + flag |= GFP_DMA32; + break; +#endif + }; /* ignore region specifiers */ flag &= ~(__GFP_HIGHMEM); @@ -202,6 +235,7 @@ int __dma_set_mask(struct device *dev, u64 dma_mask) *dev->dma_mask = dma_mask; return 0; } + int dma_set_mask(struct device *dev, u64 dma_mask) { if (ppc_md.dma_set_mask) @@ -210,13 +244,10 @@ int dma_set_mask(struct device *dev, u64 dma_mask) } EXPORT_SYMBOL(dma_set_mask); -u64 dma_get_required_mask(struct device *dev) +u64 __dma_get_required_mask(struct device *dev) { struct dma_map_ops *dma_ops = get_dma_ops(dev); - if (ppc_md.dma_get_required_mask) - return ppc_md.dma_get_required_mask(dev); - if (unlikely(dma_ops == NULL)) return 0; @@ -225,6 +256,14 @@ u64 dma_get_required_mask(struct device *dev) return DMA_BIT_MASK(8 * sizeof(dma_addr_t)); } + +u64 dma_get_required_mask(struct device *dev) +{ + if (ppc_md.dma_get_required_mask) + return ppc_md.dma_get_required_mask(dev); + + return __dma_get_required_mask(dev); +} EXPORT_SYMBOL_GPL(dma_get_required_mask); static int __init dma_init(void) diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 59a64f8..d543e41 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -117,7 +117,7 @@ static DEFINE_MUTEX(eeh_dev_mutex); * not dynamically alloced, so that it ends up in RMO where RTAS * can access it. */ -#define EEH_PCI_REGS_LOG_LEN 4096 +#define EEH_PCI_REGS_LOG_LEN 8192 static unsigned char pci_regs_buf[EEH_PCI_REGS_LOG_LEN]; /* @@ -148,16 +148,12 @@ static int __init eeh_setup(char *str) } __setup("eeh=", eeh_setup); -/** - * eeh_gather_pci_data - Copy assorted PCI config space registers to buff - * @edev: device to report data for - * @buf: point to buffer in which to log - * @len: amount of room in buffer - * - * This routine captures assorted PCI configuration space data, - * and puts them into a buffer for RTAS error logging. +/* + * This routine captures assorted PCI configuration space data + * for the indicated PCI device, and puts them into a buffer + * for RTAS error logging. */ -static size_t eeh_gather_pci_data(struct eeh_dev *edev, char *buf, size_t len) +static size_t eeh_dump_dev_log(struct eeh_dev *edev, char *buf, size_t len) { struct device_node *dn = eeh_dev_to_of_node(edev); u32 cfg; @@ -255,6 +251,19 @@ static size_t eeh_gather_pci_data(struct eeh_dev *edev, char *buf, size_t len) return n; } +static void *eeh_dump_pe_log(void *data, void *flag) +{ + struct eeh_pe *pe = data; + struct eeh_dev *edev, *tmp; + size_t *plen = flag; + + eeh_pe_for_each_dev(pe, edev, tmp) + *plen += eeh_dump_dev_log(edev, pci_regs_buf + *plen, + EEH_PCI_REGS_LOG_LEN - *plen); + + return NULL; +} + /** * eeh_slot_error_detail - Generate combined log including driver log and error log * @pe: EEH PE @@ -268,7 +277,6 @@ static size_t eeh_gather_pci_data(struct eeh_dev *edev, char *buf, size_t len) void eeh_slot_error_detail(struct eeh_pe *pe, int severity) { size_t loglen = 0; - struct eeh_dev *edev, *tmp; /* * When the PHB is fenced or dead, it's pointless to collect @@ -286,10 +294,7 @@ void eeh_slot_error_detail(struct eeh_pe *pe, int severity) eeh_pe_restore_bars(pe); pci_regs_buf[0] = 0; - eeh_pe_for_each_dev(pe, edev, tmp) { - loglen += eeh_gather_pci_data(edev, pci_regs_buf + loglen, - EEH_PCI_REGS_LOG_LEN - loglen); - } + eeh_pe_traverse(pe, eeh_dump_pe_log, &loglen); } eeh_ops->get_log(pe, severity, pci_regs_buf, loglen); @@ -410,7 +415,7 @@ int eeh_dev_check_failure(struct eeh_dev *edev) } dn = eeh_dev_to_of_node(edev); dev = eeh_dev_to_pci_dev(edev); - pe = edev->pe; + pe = eeh_dev_to_pe(edev); /* Access to IO BARs might get this far and still not want checking. */ if (!pe) { @@ -542,17 +547,16 @@ EXPORT_SYMBOL_GPL(eeh_dev_check_failure); /** * eeh_check_failure - Check if all 1's data is due to EEH slot freeze - * @token: I/O token, should be address in the form 0xA.... - * @val: value, should be all 1's (XXX why do we need this arg??) + * @token: I/O address * - * Check for an EEH failure at the given token address. Call this + * Check for an EEH failure at the given I/O address. Call this * routine if the result of a read was all 0xff's and you want to - * find out if this is due to an EEH slot freeze event. This routine + * find out if this is due to an EEH slot freeze event. This routine * will query firmware for the EEH status. * * Note this routine is safe to call in an interrupt context. */ -unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned long val) +int eeh_check_failure(const volatile void __iomem *token) { unsigned long addr; struct eeh_dev *edev; @@ -562,13 +566,11 @@ unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned lon edev = eeh_addr_cache_get_dev(addr); if (!edev) { eeh_stats.no_device++; - return val; + return 0; } - eeh_dev_check_failure(edev); - return val; + return eeh_dev_check_failure(edev); } - EXPORT_SYMBOL(eeh_check_failure); @@ -582,25 +584,51 @@ EXPORT_SYMBOL(eeh_check_failure); */ int eeh_pci_enable(struct eeh_pe *pe, int function) { - int rc, flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE); + int active_flag, rc; /* * pHyp doesn't allow to enable IO or DMA on unfrozen PE. * Also, it's pointless to enable them on unfrozen PE. So - * we have the check here. + * we have to check before enabling IO or DMA. */ - if (function == EEH_OPT_THAW_MMIO || - function == EEH_OPT_THAW_DMA) { + switch (function) { + case EEH_OPT_THAW_MMIO: + active_flag = EEH_STATE_MMIO_ACTIVE; + break; + case EEH_OPT_THAW_DMA: + active_flag = EEH_STATE_DMA_ACTIVE; + break; + case EEH_OPT_DISABLE: + case EEH_OPT_ENABLE: + case EEH_OPT_FREEZE_PE: + active_flag = 0; + break; + default: + pr_warn("%s: Invalid function %d\n", + __func__, function); + return -EINVAL; + } + + /* + * Check if IO or DMA has been enabled before + * enabling them. + */ + if (active_flag) { rc = eeh_ops->get_state(pe, NULL); if (rc < 0) return rc; - /* Needn't to enable or already enabled */ - if ((rc == EEH_STATE_NOT_SUPPORT) || - ((rc & flags) == flags)) + /* Needn't enable it at all */ + if (rc == EEH_STATE_NOT_SUPPORT) + return 0; + + /* It's already enabled */ + if (rc & active_flag) return 0; } + + /* Issue the request */ rc = eeh_ops->set_option(pe, function); if (rc) pr_warn("%s: Unexpected state change %d on " @@ -608,17 +636,17 @@ int eeh_pci_enable(struct eeh_pe *pe, int function) __func__, function, pe->phb->global_number, pe->addr, rc); - rc = eeh_ops->wait_state(pe, PCI_BUS_RESET_WAIT_MSEC); - if (rc <= 0) - return rc; + /* Check if the request is finished successfully */ + if (active_flag) { + rc = eeh_ops->wait_state(pe, PCI_BUS_RESET_WAIT_MSEC); + if (rc <= 0) + return rc; - if ((function == EEH_OPT_THAW_MMIO) && - (rc & EEH_STATE_MMIO_ENABLED)) - return 0; + if (rc & active_flag) + return 0; - if ((function == EEH_OPT_THAW_DMA) && - (rc & EEH_STATE_DMA_ENABLED)) - return 0; + return -EIO; + } return rc; } @@ -634,7 +662,7 @@ int eeh_pci_enable(struct eeh_pe *pe, int function) int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state) { struct eeh_dev *edev = pci_dev_to_eeh_dev(dev); - struct eeh_pe *pe = edev->pe; + struct eeh_pe *pe = eeh_dev_to_pe(edev); if (!pe) { pr_err("%s: No PE found on PCI device %s\n", @@ -645,14 +673,18 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat switch (state) { case pcie_deassert_reset: eeh_ops->reset(pe, EEH_RESET_DEACTIVATE); + eeh_pe_state_clear(pe, EEH_PE_RESET); break; case pcie_hot_reset: + eeh_pe_state_mark(pe, EEH_PE_RESET); eeh_ops->reset(pe, EEH_RESET_HOT); break; case pcie_warm_reset: + eeh_pe_state_mark(pe, EEH_PE_RESET); eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL); break; default: + eeh_pe_state_clear(pe, EEH_PE_RESET); return -EINVAL; }; @@ -1141,6 +1173,85 @@ void eeh_remove_device(struct pci_dev *dev) edev->mode &= ~EEH_DEV_SYSFS; } +int eeh_unfreeze_pe(struct eeh_pe *pe, bool sw_state) +{ + int ret; + + ret = eeh_pci_enable(pe, EEH_OPT_THAW_MMIO); + if (ret) { + pr_warn("%s: Failure %d enabling IO on PHB#%x-PE#%x\n", + __func__, ret, pe->phb->global_number, pe->addr); + return ret; + } + + ret = eeh_pci_enable(pe, EEH_OPT_THAW_DMA); + if (ret) { + pr_warn("%s: Failure %d enabling DMA on PHB#%x-PE#%x\n", + __func__, ret, pe->phb->global_number, pe->addr); + return ret; + } + + /* Clear software isolated state */ + if (sw_state && (pe->state & EEH_PE_ISOLATED)) + eeh_pe_state_clear(pe, EEH_PE_ISOLATED); + + return ret; +} + + +static struct pci_device_id eeh_reset_ids[] = { + { PCI_DEVICE(0x19a2, 0x0710) }, /* Emulex, BE */ + { PCI_DEVICE(0x10df, 0xe220) }, /* Emulex, Lancer */ + { 0 } +}; + +static int eeh_pe_change_owner(struct eeh_pe *pe) +{ + struct eeh_dev *edev, *tmp; + struct pci_dev *pdev; + struct pci_device_id *id; + int flags, ret; + + /* Check PE state */ + flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE); + ret = eeh_ops->get_state(pe, NULL); + if (ret < 0 || ret == EEH_STATE_NOT_SUPPORT) + return 0; + + /* Unfrozen PE, nothing to do */ + if ((ret & flags) == flags) + return 0; + + /* Frozen PE, check if it needs PE level reset */ + eeh_pe_for_each_dev(pe, edev, tmp) { + pdev = eeh_dev_to_pci_dev(edev); + if (!pdev) + continue; + + for (id = &eeh_reset_ids[0]; id->vendor != 0; id++) { + if (id->vendor != PCI_ANY_ID && + id->vendor != pdev->vendor) + continue; + if (id->device != PCI_ANY_ID && + id->device != pdev->device) + continue; + if (id->subvendor != PCI_ANY_ID && + id->subvendor != pdev->subsystem_vendor) + continue; + if (id->subdevice != PCI_ANY_ID && + id->subdevice != pdev->subsystem_device) + continue; + + goto reset; + } + } + + return eeh_unfreeze_pe(pe, true); + +reset: + return eeh_pe_reset_and_recover(pe); +} + /** * eeh_dev_open - Increase count of pass through devices for PE * @pdev: PCI device @@ -1153,6 +1264,7 @@ void eeh_remove_device(struct pci_dev *dev) int eeh_dev_open(struct pci_dev *pdev) { struct eeh_dev *edev; + int ret = -ENODEV; mutex_lock(&eeh_dev_mutex); @@ -1165,6 +1277,16 @@ int eeh_dev_open(struct pci_dev *pdev) if (!edev || !edev->pe) goto out; + /* + * The PE might have been put into frozen state, but we + * didn't detect that yet. The passed through PCI devices + * in frozen PE won't work properly. Clear the frozen state + * in advance. + */ + ret = eeh_pe_change_owner(edev->pe); + if (ret) + goto out; + /* Increase PE's pass through count */ atomic_inc(&edev->pe->pass_dev_cnt); mutex_unlock(&eeh_dev_mutex); @@ -1172,7 +1294,7 @@ int eeh_dev_open(struct pci_dev *pdev) return 0; out: mutex_unlock(&eeh_dev_mutex); - return -ENODEV; + return ret; } EXPORT_SYMBOL_GPL(eeh_dev_open); @@ -1202,6 +1324,7 @@ void eeh_dev_release(struct pci_dev *pdev) /* Decrease PE's pass through count */ atomic_dec(&edev->pe->pass_dev_cnt); WARN_ON(atomic_read(&edev->pe->pass_dev_cnt) < 0); + eeh_pe_change_owner(edev->pe); out: mutex_unlock(&eeh_dev_mutex); } @@ -1281,8 +1404,10 @@ int eeh_pe_set_option(struct eeh_pe *pe, int option) */ switch (option) { case EEH_OPT_ENABLE: - if (eeh_enabled()) + if (eeh_enabled()) { + ret = eeh_pe_change_owner(pe); break; + } ret = -EIO; break; case EEH_OPT_DISABLE: @@ -1294,7 +1419,7 @@ int eeh_pe_set_option(struct eeh_pe *pe, int option) break; } - ret = eeh_ops->set_option(pe, option); + ret = eeh_pci_enable(pe, option); break; default: pr_debug("%s: Option %d out of range (%d, %d)\n", @@ -1345,6 +1470,36 @@ int eeh_pe_get_state(struct eeh_pe *pe) } EXPORT_SYMBOL_GPL(eeh_pe_get_state); +static int eeh_pe_reenable_devices(struct eeh_pe *pe) +{ + struct eeh_dev *edev, *tmp; + struct pci_dev *pdev; + int ret = 0; + + /* Restore config space */ + eeh_pe_restore_bars(pe); + + /* + * Reenable PCI devices as the devices passed + * through are always enabled before the reset. + */ + eeh_pe_for_each_dev(pe, edev, tmp) { + pdev = eeh_dev_to_pci_dev(edev); + if (!pdev) + continue; + + ret = pci_reenable_device(pdev); + if (ret) { + pr_warn("%s: Failure %d reenabling %s\n", + __func__, ret, pci_name(pdev)); + return ret; + } + } + + /* The PE is still in frozen state */ + return eeh_unfreeze_pe(pe, true); +} + /** * eeh_pe_reset - Issue PE reset according to specified type * @pe: EEH PE @@ -1368,23 +1523,22 @@ int eeh_pe_reset(struct eeh_pe *pe, int option) switch (option) { case EEH_RESET_DEACTIVATE: ret = eeh_ops->reset(pe, option); + eeh_pe_state_clear(pe, EEH_PE_RESET); if (ret) break; - /* - * The PE is still in frozen state and we need to clear - * that. It's good to clear frozen state after deassert - * to avoid messy IO access during reset, which might - * cause recursive frozen PE. - */ - ret = eeh_ops->set_option(pe, EEH_OPT_THAW_MMIO); - if (!ret) - ret = eeh_ops->set_option(pe, EEH_OPT_THAW_DMA); - if (!ret) - eeh_pe_state_clear(pe, EEH_PE_ISOLATED); + ret = eeh_pe_reenable_devices(pe); break; case EEH_RESET_HOT: case EEH_RESET_FUNDAMENTAL: + /* + * Proactively freeze the PE to drop all MMIO access + * during reset, which should be banned as it's always + * cause recursive EEH error. + */ + eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); + + eeh_pe_state_mark(pe, EEH_PE_RESET); ret = eeh_ops->reset(pe, option); break; default: @@ -1413,9 +1567,6 @@ int eeh_pe_configure(struct eeh_pe *pe) if (!pe) return -ENODEV; - /* Restore config space for the affected devices */ - eeh_pe_restore_bars(pe); - return ret; } EXPORT_SYMBOL_GPL(eeh_pe_configure); diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index 6a0dcee..3fd514f 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -180,6 +180,22 @@ static bool eeh_dev_removed(struct eeh_dev *edev) return false; } +static void *eeh_dev_save_state(void *data, void *userdata) +{ + struct eeh_dev *edev = data; + struct pci_dev *pdev; + + if (!edev) + return NULL; + + pdev = eeh_dev_to_pci_dev(edev); + if (!pdev) + return NULL; + + pci_save_state(pdev); + return NULL; +} + /** * eeh_report_error - Report pci error to each device driver * @data: eeh device @@ -303,6 +319,22 @@ static void *eeh_report_reset(void *data, void *userdata) return NULL; } +static void *eeh_dev_restore_state(void *data, void *userdata) +{ + struct eeh_dev *edev = data; + struct pci_dev *pdev; + + if (!edev) + return NULL; + + pdev = eeh_dev_to_pci_dev(edev); + if (!pdev) + return NULL; + + pci_restore_state(pdev); + return NULL; +} + /** * eeh_report_resume - Tell device to resume normal operations * @data: eeh device @@ -450,38 +482,82 @@ static void *eeh_pe_detach_dev(void *data, void *userdata) static void *__eeh_clear_pe_frozen_state(void *data, void *flag) { struct eeh_pe *pe = (struct eeh_pe *)data; - int i, rc; + bool *clear_sw_state = flag; + int i, rc = 1; - for (i = 0; i < 3; i++) { - rc = eeh_pci_enable(pe, EEH_OPT_THAW_MMIO); - if (rc) - continue; - rc = eeh_pci_enable(pe, EEH_OPT_THAW_DMA); - if (!rc) - break; - } + for (i = 0; rc && i < 3; i++) + rc = eeh_unfreeze_pe(pe, clear_sw_state); - /* The PE has been isolated, clear it */ + /* Stop immediately on any errors */ if (rc) { - pr_warn("%s: Can't clear frozen PHB#%x-PE#%x (%d)\n", - __func__, pe->phb->global_number, pe->addr, rc); + pr_warn("%s: Failure %d unfreezing PHB#%x-PE#%x\n", + __func__, rc, pe->phb->global_number, pe->addr); return (void *)pe; } return NULL; } -static int eeh_clear_pe_frozen_state(struct eeh_pe *pe) +static int eeh_clear_pe_frozen_state(struct eeh_pe *pe, + bool clear_sw_state) { void *rc; - rc = eeh_pe_traverse(pe, __eeh_clear_pe_frozen_state, NULL); + rc = eeh_pe_traverse(pe, __eeh_clear_pe_frozen_state, &clear_sw_state); if (!rc) eeh_pe_state_clear(pe, EEH_PE_ISOLATED); return rc ? -EIO : 0; } +int eeh_pe_reset_and_recover(struct eeh_pe *pe) +{ + int result, ret; + + /* Bail if the PE is being recovered */ + if (pe->state & EEH_PE_RECOVERING) + return 0; + + /* Put the PE into recovery mode */ + eeh_pe_state_mark(pe, EEH_PE_RECOVERING); + + /* Save states */ + eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL); + + /* Report error */ + eeh_pe_dev_traverse(pe, eeh_report_error, &result); + + /* Issue reset */ + eeh_pe_state_mark(pe, EEH_PE_RESET); + ret = eeh_reset_pe(pe); + if (ret) { + eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_RESET); + return ret; + } + eeh_pe_state_clear(pe, EEH_PE_RESET); + + /* Unfreeze the PE */ + ret = eeh_clear_pe_frozen_state(pe, true); + if (ret) { + eeh_pe_state_clear(pe, EEH_PE_RECOVERING); + return ret; + } + + /* Notify completion of reset */ + eeh_pe_dev_traverse(pe, eeh_report_reset, &result); + + /* Restore device state */ + eeh_pe_dev_traverse(pe, eeh_dev_restore_state, NULL); + + /* Resume */ + eeh_pe_dev_traverse(pe, eeh_report_resume, NULL); + + /* Clear recovery mode */ + eeh_pe_state_clear(pe, EEH_PE_RECOVERING); + + return 0; +} + /** * eeh_reset_device - Perform actual reset of a pci slot * @pe: EEH PE @@ -540,7 +616,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus) eeh_pe_state_clear(pe, EEH_PE_RESET); /* Clear frozen state */ - rc = eeh_clear_pe_frozen_state(pe); + rc = eeh_clear_pe_frozen_state(pe, false); if (rc) return rc; diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 00e3844..53dd091 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -428,7 +428,7 @@ int eeh_rmv_from_parent_pe(struct eeh_dev *edev) } /* Remove the EEH device */ - pe = edev->pe; + pe = eeh_dev_to_pe(edev); edev->pe = NULL; list_del(&edev->list); @@ -584,6 +584,8 @@ static void *__eeh_pe_state_clear(void *data, void *flag) { struct eeh_pe *pe = (struct eeh_pe *)data; int state = *((int *)flag); + struct eeh_dev *edev, *tmp; + struct pci_dev *pdev; /* Keep the state of permanently removed PE intact */ if ((pe->freeze_count > EEH_MAX_ALLOWED_FREEZES) && @@ -592,9 +594,22 @@ static void *__eeh_pe_state_clear(void *data, void *flag) pe->state &= ~state; - /* Clear check count since last isolation */ - if (state & EEH_PE_ISOLATED) - pe->check_count = 0; + /* + * Special treatment on clearing isolated state. Clear + * check count since last isolation and put all affected + * devices to normal state. + */ + if (!(state & EEH_PE_ISOLATED)) + return NULL; + + pe->check_count = 0; + eeh_pe_for_each_dev(pe, edev, tmp) { + pdev = eeh_dev_to_pci_dev(edev); + if (!pdev) + continue; + + pdev->error_state = pci_channel_io_normal; + } return NULL; } diff --git a/arch/powerpc/kernel/eeh_sysfs.c b/arch/powerpc/kernel/eeh_sysfs.c index e2595ba..f19b1e5 100644 --- a/arch/powerpc/kernel/eeh_sysfs.c +++ b/arch/powerpc/kernel/eeh_sysfs.c @@ -54,6 +54,43 @@ EEH_SHOW_ATTR(eeh_mode, mode, "0x%x"); EEH_SHOW_ATTR(eeh_config_addr, config_addr, "0x%x"); EEH_SHOW_ATTR(eeh_pe_config_addr, pe_config_addr, "0x%x"); +static ssize_t eeh_pe_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); + int state; + + if (!edev || !edev->pe) + return -ENODEV; + + state = eeh_ops->get_state(edev->pe, NULL); + return sprintf(buf, "%0x08x %0x08x\n", + state, edev->pe->state); +} + +static ssize_t eeh_pe_state_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); + + if (!edev || !edev->pe) + return -ENODEV; + + /* Nothing to do if it's not frozen */ + if (!(edev->pe->state & EEH_PE_ISOLATED)) + return count; + + if (eeh_unfreeze_pe(edev->pe, true)) + return -EIO; + + return count; +} + +static DEVICE_ATTR_RW(eeh_pe_state); + void eeh_sysfs_add_device(struct pci_dev *pdev) { struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); @@ -68,9 +105,10 @@ void eeh_sysfs_add_device(struct pci_dev *pdev) rc += device_create_file(&pdev->dev, &dev_attr_eeh_mode); rc += device_create_file(&pdev->dev, &dev_attr_eeh_config_addr); rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); + rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_state); if (rc) - printk(KERN_WARNING "EEH: Unable to create sysfs entries\n"); + pr_warn("EEH: Unable to create sysfs entries\n"); else if (edev) edev->mode |= EEH_DEV_SYSFS; } @@ -92,6 +130,7 @@ void eeh_sysfs_remove_device(struct pci_dev *pdev) device_remove_file(&pdev->dev, &dev_attr_eeh_mode); device_remove_file(&pdev->dev, &dev_attr_eeh_config_addr); device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); + device_remove_file(&pdev->dev, &dev_attr_eeh_pe_state); if (edev) edev->mode &= ~EEH_DEV_SYSFS; diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 7ee876d..fafff8d 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -104,12 +104,15 @@ turn_on_mmu: * task's thread_struct. */ #define EXCEPTION_PROLOG \ - mtspr SPRN_SPRG_SCRATCH0,r10; \ - mtspr SPRN_SPRG_SCRATCH1,r11; \ - mfcr r10; \ + EXCEPTION_PROLOG_0; \ EXCEPTION_PROLOG_1; \ EXCEPTION_PROLOG_2 +#define EXCEPTION_PROLOG_0 \ + mtspr SPRN_SPRG_SCRATCH0,r10; \ + mtspr SPRN_SPRG_SCRATCH1,r11; \ + mfcr r10 + #define EXCEPTION_PROLOG_1 \ mfspr r11,SPRN_SRR1; /* check whether user or kernel */ \ andi. r11,r11,MSR_PR; \ @@ -145,6 +148,14 @@ turn_on_mmu: SAVE_2GPRS(7, r11) /* + * Exception exit code. + */ +#define EXCEPTION_EPILOG_0 \ + mtcr r10; \ + mfspr r10,SPRN_SPRG_SCRATCH0; \ + mfspr r11,SPRN_SPRG_SCRATCH1 + +/* * Note: code which follows this uses cr0.eq (set if from kernel), * r11, r12 (SRR0), and r9 (SRR1). * @@ -293,16 +304,8 @@ InstructionTLBMiss: #ifdef CONFIG_8xx_CPU6 stw r3, 8(r0) #endif - DO_8xx_CPU6(0x3f80, r3) - mtspr SPRN_M_TW, r10 /* Save a couple of working registers */ - mfcr r10 -#ifdef CONFIG_8xx_CPU6 - stw r10, 0(r0) - stw r11, 4(r0) -#else - mtspr SPRN_DAR, r10 - mtspr SPRN_SPRG2, r11 -#endif + EXCEPTION_PROLOG_0 + mtspr SPRN_SPRG_SCRATCH2, r10 mfspr r10, SPRN_SRR0 /* Get effective address of fault */ #ifdef CONFIG_8xx_CPU15 addi r11, r10, 0x1000 @@ -359,18 +362,11 @@ InstructionTLBMiss: mtspr SPRN_MI_RPN, r10 /* Update TLB entry */ /* Restore registers */ -#ifndef CONFIG_8xx_CPU6 - mfspr r10, SPRN_DAR - mtcr r10 - mtspr SPRN_DAR, r11 /* Tag DAR */ - mfspr r11, SPRN_SPRG2 -#else - lwz r11, 0(r0) - mtcr r11 - lwz r11, 4(r0) +#ifdef CONFIG_8xx_CPU6 lwz r3, 8(r0) #endif - mfspr r10, SPRN_M_TW + mfspr r10, SPRN_SPRG_SCRATCH2 + EXCEPTION_EPILOG_0 rfi 2: mfspr r11, SPRN_SRR1 @@ -381,19 +377,11 @@ InstructionTLBMiss: mtspr SPRN_SRR1, r11 /* Restore registers */ -#ifndef CONFIG_8xx_CPU6 - mfspr r10, SPRN_DAR - mtcr r10 - li r11, 0x00f0 - mtspr SPRN_DAR, r11 /* Tag DAR */ - mfspr r11, SPRN_SPRG2 -#else - lwz r11, 0(r0) - mtcr r11 - lwz r11, 4(r0) +#ifdef CONFIG_8xx_CPU6 lwz r3, 8(r0) #endif - mfspr r10, SPRN_M_TW + mfspr r10, SPRN_SPRG_SCRATCH2 + EXCEPTION_EPILOG_0 b InstructionAccess . = 0x1200 @@ -401,16 +389,8 @@ DataStoreTLBMiss: #ifdef CONFIG_8xx_CPU6 stw r3, 8(r0) #endif - DO_8xx_CPU6(0x3f80, r3) - mtspr SPRN_M_TW, r10 /* Save a couple of working registers */ - mfcr r10 -#ifdef CONFIG_8xx_CPU6 - stw r10, 0(r0) - stw r11, 4(r0) -#else - mtspr SPRN_DAR, r10 - mtspr SPRN_SPRG2, r11 -#endif + EXCEPTION_PROLOG_0 + mtspr SPRN_SPRG_SCRATCH2, r10 mfspr r10, SPRN_M_TWB /* Get level 1 table entry address */ /* If we are faulting a kernel address, we have to use the @@ -483,19 +463,12 @@ DataStoreTLBMiss: mtspr SPRN_MD_RPN, r10 /* Update TLB entry */ /* Restore registers */ -#ifndef CONFIG_8xx_CPU6 - mfspr r10, SPRN_DAR - mtcr r10 - mtspr SPRN_DAR, r11 /* Tag DAR */ - mfspr r11, SPRN_SPRG2 -#else - mtspr SPRN_DAR, r11 /* Tag DAR */ - lwz r11, 0(r0) - mtcr r11 - lwz r11, 4(r0) +#ifdef CONFIG_8xx_CPU6 lwz r3, 8(r0) #endif - mfspr r10, SPRN_M_TW + mtspr SPRN_DAR, r11 /* Tag DAR */ + mfspr r10, SPRN_SPRG_SCRATCH2 + EXCEPTION_EPILOG_0 rfi /* This is an instruction TLB error on the MPC8xx. This could be due @@ -507,35 +480,18 @@ InstructionTLBError: b InstructionAccess /* This is the data TLB error on the MPC8xx. This could be due to - * many reasons, including a dirty update to a pte. We can catch that - * one here, but anything else is an error. First, we track down the - * Linux pte. If it is valid, write access is allowed, but the - * page dirty bit is not set, we will set it and reload the TLB. For - * any other case, we bail out to a higher level function that can - * handle it. + * many reasons, including a dirty update to a pte. We bail out to + * a higher level function that can handle it. */ . = 0x1400 DataTLBError: -#ifdef CONFIG_8xx_CPU6 - stw r3, 8(r0) -#endif - DO_8xx_CPU6(0x3f80, r3) - mtspr SPRN_M_TW, r10 /* Save a couple of working registers */ - mfcr r10 - stw r10, 0(r0) - stw r11, 4(r0) + EXCEPTION_PROLOG_0 - mfspr r10, SPRN_DAR - cmpwi cr0, r10, 0x00f0 + mfspr r11, SPRN_DAR + cmpwi cr0, r11, 0x00f0 beq- FixupDAR /* must be a buggy dcbX, icbi insn. */ -DARFixed:/* Return from dcbx instruction bug workaround, r10 holds value of DAR */ - mfspr r10, SPRN_M_TW /* Restore registers */ - lwz r11, 0(r0) - mtcr r11 - lwz r11, 4(r0) -#ifdef CONFIG_8xx_CPU6 - lwz r3, 8(r0) -#endif +DARFixed:/* Return from dcbx instruction bug workaround */ + EXCEPTION_EPILOG_0 b DataAccess EXCEPTION(0x1500, Trap_15, unknown_exception, EXC_XFER_EE) @@ -559,11 +515,15 @@ DARFixed:/* Return from dcbx instruction bug workaround, r10 holds value of DAR /* This is the procedure to calculate the data EA for buggy dcbx,dcbi instructions * by decoding the registers used by the dcbx instruction and adding them. - * DAR is set to the calculated address and r10 also holds the EA on exit. + * DAR is set to the calculated address. */ /* define if you don't want to use self modifying code */ #define NO_SELF_MODIFYING_CODE FixupDAR:/* Entry point for dcbx workaround. */ +#ifdef CONFIG_8xx_CPU6 + stw r3, 8(r0) +#endif + mtspr SPRN_SPRG_SCRATCH2, r10 /* fetch instruction from memory. */ mfspr r10, SPRN_SRR0 andis. r11, r10, 0x8000 /* Address >= 0x80000000 */ @@ -579,16 +539,17 @@ FixupDAR:/* Entry point for dcbx workaround. */ mtspr SPRN_MD_TWC, r11 /* Load pte table base address */ mfspr r11, SPRN_MD_TWC /* ....and get the pte address */ lwz r11, 0(r11) /* Get the pte */ +#ifdef CONFIG_8xx_CPU6 + lwz r3, 8(r0) /* restore r3 from memory */ +#endif /* concat physical page address(r11) and page offset(r10) */ rlwimi r11, r10, 0, 20, 31 lwz r11,0(r11) /* Check if it really is a dcbx instruction. */ /* dcbt and dcbtst does not generate DTLB Misses/Errors, * no need to include them here */ - srwi r10, r11, 26 /* check if major OP code is 31 */ - cmpwi cr0, r10, 31 - bne- 141f - rlwinm r10, r11, 0, 21, 30 + xoris r10, r11, 0x7c00 /* check if major OP code is 31 */ + rlwinm r10, r10, 0, 21, 5 cmpwi cr0, r10, 2028 /* Is dcbz? */ beq+ 142f cmpwi cr0, r10, 940 /* Is dcbi? */ @@ -599,16 +560,13 @@ FixupDAR:/* Entry point for dcbx workaround. */ beq+ 142f cmpwi cr0, r10, 1964 /* Is icbi? */ beq+ 142f -141: mfspr r10, SPRN_DAR /* r10 must hold DAR at exit */ +141: mfspr r10,SPRN_SPRG_SCRATCH2 b DARFixed /* Nope, go back to normal TLB processing */ 144: mfspr r10, SPRN_DSISR rlwinm r10, r10,0,7,5 /* Clear store bit for buggy dcbst insn */ mtspr SPRN_DSISR, r10 142: /* continue, it was a dcbx, dcbi instruction. */ -#ifdef CONFIG_8xx_CPU6 - lwz r3, 8(r0) /* restore r3 from memory */ -#endif #ifndef NO_SELF_MODIFYING_CODE andis. r10,r11,0x1f /* test if reg RA is r0 */ li r10,modified_instr@l @@ -619,14 +577,15 @@ FixupDAR:/* Entry point for dcbx workaround. */ stw r11,0(r10) /* store add/and instruction */ dcbf 0,r10 /* flush new instr. to memory. */ icbi 0,r10 /* invalidate instr. cache line */ - lwz r11, 4(r0) /* restore r11 from memory */ - mfspr r10, SPRN_M_TW /* restore r10 from M_TW */ + mfspr r11, SPRN_SPRG_SCRATCH1 /* restore r11 */ + mfspr r10, SPRN_SPRG_SCRATCH0 /* restore r10 */ isync /* Wait until new instr is loaded from memory */ modified_instr: .space 4 /* this is where the add instr. is stored */ bne+ 143f subf r10,r0,r10 /* r10=r10-r0, only if reg RA is r0 */ 143: mtdar r10 /* store faulting EA in DAR */ + mfspr r10,SPRN_SPRG_SCRATCH2 b DARFixed /* Go back to normal TLB handling */ #else mfctr r10 @@ -680,13 +639,16 @@ modified_instr: mfdar r11 mtctr r11 /* restore ctr reg from DAR */ mtdar r10 /* save fault EA to DAR */ + mfspr r10,SPRN_SPRG_SCRATCH2 b DARFixed /* Go back to normal TLB handling */ /* special handling for r10,r11 since these are modified already */ -153: lwz r11, 4(r0) /* load r11 from memory */ - b 155f -154: mfspr r11, SPRN_M_TW /* load r10 from M_TW */ -155: add r10, r10, r11 /* add it */ +153: mfspr r11, SPRN_SPRG_SCRATCH1 /* load r11 from SPRN_SPRG_SCRATCH1 */ + add r10, r10, r11 /* add it */ + mfctr r11 /* restore r11 */ + b 151b +154: mfspr r11, SPRN_SPRG_SCRATCH0 /* load r10 from SPRN_SPRG_SCRATCH0 */ + add r10, r10, r11 /* add it */ mfctr r11 /* restore r11 */ b 151b #endif diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c index 0bb5918..1f7d84e 100644 --- a/arch/powerpc/kernel/hw_breakpoint.c +++ b/arch/powerpc/kernel/hw_breakpoint.c @@ -293,7 +293,7 @@ out: /* * Handle single-step exceptions following a DABR hit. */ -int __kprobes single_step_dabr_instruction(struct die_args *args) +static int __kprobes single_step_dabr_instruction(struct die_args *args) { struct pt_regs *regs = args->regs; struct perf_event *bp = NULL; diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c index 1114d13..ac86c53 100644 --- a/arch/powerpc/kernel/ibmebus.c +++ b/arch/powerpc/kernel/ibmebus.c @@ -55,7 +55,7 @@ static struct device ibmebus_bus_device = { /* fake "parent" device */ struct bus_type ibmebus_bus_type; /* These devices will automatically be added to the bus during init */ -static struct of_device_id __initdata ibmebus_matches[] = { +static const struct of_device_id ibmebus_matches[] __initconst = { { .compatible = "IBM,lhca" }, { .compatible = "IBM,lhea" }, {}, diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S index be05841..c0754bb 100644 --- a/arch/powerpc/kernel/idle_power7.S +++ b/arch/powerpc/kernel/idle_power7.S @@ -73,7 +73,7 @@ _GLOBAL(power7_powersave_common) /* Check if something happened while soft-disabled */ lbz r0,PACAIRQHAPPENED(r13) - cmpwi cr0,r0,0 + andi. r0,r0,~PACA_IRQ_HARD_DIS@l beq 1f cmpwi cr0,r4,0 beq 1f diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 4c5891d..8eb857f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -444,13 +444,13 @@ void migrate_irqs(void) cpumask_and(mask, data->affinity, map); if (cpumask_any(mask) >= nr_cpu_ids) { - printk("Breaking affinity for irq %i\n", irq); + pr_warn("Breaking affinity for irq %i\n", irq); cpumask_copy(mask, map); } if (chip->irq_set_affinity) chip->irq_set_affinity(data, mask, true); else if (desc->action && !(warned++)) - printk("Cannot set affinity for irq %i\n", irq); + pr_err("Cannot set affinity for irq %i\n", irq); } free_cpumask_var(mask); @@ -470,7 +470,7 @@ static inline void check_stack_overflow(void) /* check for stack overflow: is there less than 2KB free? */ if (unlikely(sp < (sizeof(struct thread_info) + 2048))) { - printk("do_IRQ: stack overflow: %ld\n", + pr_err("do_IRQ: stack overflow: %ld\n", sp - sizeof(struct thread_info)); dump_stack(); } diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c index 9362588..7b750c4 100644 --- a/arch/powerpc/kernel/legacy_serial.c +++ b/arch/powerpc/kernel/legacy_serial.c @@ -35,7 +35,7 @@ static struct legacy_serial_info { phys_addr_t taddr; } legacy_serial_infos[MAX_LEGACY_SERIAL_PORTS]; -static struct of_device_id legacy_serial_parents[] __initdata = { +static const struct of_device_id legacy_serial_parents[] __initconst = { {.type = "soc",}, {.type = "tsi-bridge",}, {.type = "opb", }, diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c index 6cff040..c94d2e0 100644 --- a/arch/powerpc/kernel/module_32.c +++ b/arch/powerpc/kernel/module_32.c @@ -15,6 +15,9 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/moduleloader.h> #include <linux/elf.h> @@ -28,12 +31,6 @@ #include <linux/sort.h> #include <asm/setup.h> -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt , ...) -#endif - /* Count how many different relocations (different symbol, different addend) */ static unsigned int count_relocs(const Elf32_Rela *rela, unsigned int num) @@ -121,8 +118,8 @@ static unsigned long get_plt_size(const Elf32_Ehdr *hdr, continue; if (sechdrs[i].sh_type == SHT_RELA) { - DEBUGP("Found relocations in section %u\n", i); - DEBUGP("Ptr: %p. Number: %u\n", + pr_debug("Found relocations in section %u\n", i); + pr_debug("Ptr: %p. Number: %u\n", (void *)hdr + sechdrs[i].sh_offset, sechdrs[i].sh_size / sizeof(Elf32_Rela)); @@ -161,7 +158,7 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr, me->arch.core_plt_section = i; } if (!me->arch.core_plt_section || !me->arch.init_plt_section) { - printk("Module doesn't contain .plt or .init.plt sections.\n"); + pr_err("Module doesn't contain .plt or .init.plt sections.\n"); return -ENOEXEC; } @@ -189,7 +186,7 @@ static uint32_t do_plt_call(void *location, { struct ppc_plt_entry *entry; - DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location); + pr_debug("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location); /* Init, or core PLT? */ if (location >= mod->module_core && location < mod->module_core + mod->core_size) @@ -208,7 +205,7 @@ static uint32_t do_plt_call(void *location, entry->jump[2] = 0x7d8903a6; /* mtctr r12 */ entry->jump[3] = 0x4e800420; /* bctr */ - DEBUGP("Initialized plt for 0x%x at %p\n", val, entry); + pr_debug("Initialized plt for 0x%x at %p\n", val, entry); return (uint32_t)entry; } @@ -224,7 +221,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, uint32_t *location; uint32_t value; - DEBUGP("Applying ADD relocate section %u to %u\n", relsec, + pr_debug("Applying ADD relocate section %u to %u\n", relsec, sechdrs[relsec].sh_info); for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) { /* This is where to make the change */ @@ -268,17 +265,17 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, sechdrs, module); /* Only replace bits 2 through 26 */ - DEBUGP("REL24 value = %08X. location = %08X\n", + pr_debug("REL24 value = %08X. location = %08X\n", value, (uint32_t)location); - DEBUGP("Location before: %08X.\n", + pr_debug("Location before: %08X.\n", *(uint32_t *)location); *(uint32_t *)location = (*(uint32_t *)location & ~0x03fffffc) | ((value - (uint32_t)location) & 0x03fffffc); - DEBUGP("Location after: %08X.\n", + pr_debug("Location after: %08X.\n", *(uint32_t *)location); - DEBUGP("ie. jump to %08X+%08X = %08X\n", + pr_debug("ie. jump to %08X+%08X = %08X\n", *(uint32_t *)location & 0x03fffffc, (uint32_t)location, (*(uint32_t *)location & 0x03fffffc) @@ -291,7 +288,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, break; default: - printk("%s: unknown ADD relocation: %u\n", + pr_err("%s: unknown ADD relocation: %u\n", module->name, ELF32_R_TYPE(rela[i].r_info)); return -ENOEXEC; diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c index d807ee6..6838451 100644 --- a/arch/powerpc/kernel/module_64.c +++ b/arch/powerpc/kernel/module_64.c @@ -15,6 +15,9 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/elf.h> #include <linux/moduleloader.h> @@ -36,11 +39,6 @@ Using a magic allocator which places modules within 32MB solves this, and makes other things simpler. Anton? --RR. */ -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt , ...) -#endif #if defined(_CALL_ELF) && _CALL_ELF == 2 #define R2_STACK_OFFSET 24 @@ -279,8 +277,8 @@ static unsigned long get_stubs_size(const Elf64_Ehdr *hdr, /* Every relocated section... */ for (i = 1; i < hdr->e_shnum; i++) { if (sechdrs[i].sh_type == SHT_RELA) { - DEBUGP("Found relocations in section %u\n", i); - DEBUGP("Ptr: %p. Number: %lu\n", + pr_debug("Found relocations in section %u\n", i); + pr_debug("Ptr: %p. Number: %Lu\n", (void *)sechdrs[i].sh_addr, sechdrs[i].sh_size / sizeof(Elf64_Rela)); @@ -304,7 +302,7 @@ static unsigned long get_stubs_size(const Elf64_Ehdr *hdr, relocs++; #endif - DEBUGP("Looks like a total of %lu stubs, max\n", relocs); + pr_debug("Looks like a total of %lu stubs, max\n", relocs); return relocs * sizeof(struct ppc64_stub_entry); } @@ -390,7 +388,7 @@ int module_frob_arch_sections(Elf64_Ehdr *hdr, } if (!me->arch.stubs_section) { - printk("%s: doesn't contain .stubs.\n", me->name); + pr_err("%s: doesn't contain .stubs.\n", me->name); return -ENOEXEC; } @@ -434,11 +432,11 @@ static inline int create_stub(Elf64_Shdr *sechdrs, /* Stub uses address relative to r2. */ reladdr = (unsigned long)entry - my_r2(sechdrs, me); if (reladdr > 0x7FFFFFFF || reladdr < -(0x80000000L)) { - printk("%s: Address %p of stub out of range of %p.\n", + pr_err("%s: Address %p of stub out of range of %p.\n", me->name, (void *)reladdr, (void *)my_r2); return 0; } - DEBUGP("Stub %p get data from reladdr %li\n", entry, reladdr); + pr_debug("Stub %p get data from reladdr %li\n", entry, reladdr); entry->jump[0] |= PPC_HA(reladdr); entry->jump[1] |= PPC_LO(reladdr); @@ -477,7 +475,7 @@ static unsigned long stub_for_addr(Elf64_Shdr *sechdrs, static int restore_r2(u32 *instruction, struct module *me) { if (*instruction != PPC_INST_NOP) { - printk("%s: Expect noop after relocate, got %08x\n", + pr_err("%s: Expect noop after relocate, got %08x\n", me->name, *instruction); return 0; } @@ -498,7 +496,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, unsigned long *location; unsigned long value; - DEBUGP("Applying ADD relocate section %u to %u\n", relsec, + pr_debug("Applying ADD relocate section %u to %u\n", relsec, sechdrs[relsec].sh_info); /* First time we're called, we can fix up .TOC. */ @@ -519,7 +517,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, sym = (Elf64_Sym *)sechdrs[symindex].sh_addr + ELF64_R_SYM(rela[i].r_info); - DEBUGP("RELOC at %p: %li-type as %s (%lu) + %li\n", + pr_debug("RELOC at %p: %li-type as %s (0x%lx) + %li\n", location, (long)ELF64_R_TYPE(rela[i].r_info), strtab + sym->st_name, (unsigned long)sym->st_value, (long)rela[i].r_addend); @@ -546,7 +544,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, /* Subtract TOC pointer */ value -= my_r2(sechdrs, me); if (value + 0x8000 > 0xffff) { - printk("%s: bad TOC16 relocation (%lu)\n", + pr_err("%s: bad TOC16 relocation (0x%lx)\n", me->name, value); return -ENOEXEC; } @@ -567,7 +565,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, /* Subtract TOC pointer */ value -= my_r2(sechdrs, me); if ((value & 3) != 0 || value + 0x8000 > 0xffff) { - printk("%s: bad TOC16_DS relocation (%lu)\n", + pr_err("%s: bad TOC16_DS relocation (0x%lx)\n", me->name, value); return -ENOEXEC; } @@ -580,7 +578,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, /* Subtract TOC pointer */ value -= my_r2(sechdrs, me); if ((value & 3) != 0) { - printk("%s: bad TOC16_LO_DS relocation (%lu)\n", + pr_err("%s: bad TOC16_LO_DS relocation (0x%lx)\n", me->name, value); return -ENOEXEC; } @@ -613,7 +611,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, /* Convert value to relative */ value -= (unsigned long)location; if (value + 0x2000000 > 0x3ffffff || (value & 3) != 0){ - printk("%s: REL24 %li out of range!\n", + pr_err("%s: REL24 %li out of range!\n", me->name, (long int)value); return -ENOEXEC; } @@ -655,7 +653,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, break; default: - printk("%s: Unknown ADD relocation: %lu\n", + pr_err("%s: Unknown ADD relocation: %lu\n", me->name, (unsigned long)ELF64_R_TYPE(rela[i].r_info)); return -ENOEXEC; diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index 28b898e..34f7c9b 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -567,7 +567,7 @@ static int __init nvram_init(void) return rc; } -void __exit nvram_cleanup(void) +static void __exit nvram_cleanup(void) { misc_deregister( &nvram_dev ); } diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c index a7b7430..f87bc1b 100644 --- a/arch/powerpc/kernel/of_platform.c +++ b/arch/powerpc/kernel/of_platform.c @@ -97,7 +97,7 @@ static int of_pci_phb_probe(struct platform_device *dev) return 0; } -static struct of_device_id of_pci_phb_ids[] = { +static const struct of_device_id of_pci_phb_ids[] = { { .type = "pci", }, { .type = "pcix", }, { .type = "pcie", }, diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index b2814e2..bd70a51 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1140,7 +1140,7 @@ static int reparent_resources(struct resource *parent, * as well. */ -void pcibios_allocate_bus_resources(struct pci_bus *bus) +static void pcibios_allocate_bus_resources(struct pci_bus *bus) { struct pci_bus *b; int i; @@ -1561,7 +1561,6 @@ EARLY_PCI_OP(write, byte, u8) EARLY_PCI_OP(write, word, u16) EARLY_PCI_OP(write, dword, u32) -extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap); int early_find_capability(struct pci_controller *hose, int bus, int devfn, int cap) { diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c index 44562aa..e6245e9 100644 --- a/arch/powerpc/kernel/pci_of_scan.c +++ b/arch/powerpc/kernel/pci_of_scan.c @@ -38,7 +38,7 @@ static u32 get_int_prop(struct device_node *np, const char *name, u32 def) * @addr0: value of 1st cell of a device tree PCI address. * @bridge: Set this flag if the address is from a bridge 'ranges' property */ -unsigned int pci_parse_of_flags(u32 addr0, int bridge) +static unsigned int pci_parse_of_flags(u32 addr0, int bridge) { unsigned int flags = 0; diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 48d17d6f..c4dfff6 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -1,207 +1,41 @@ -#include <linux/export.h> -#include <linux/threads.h> -#include <linux/smp.h> -#include <linux/sched.h> -#include <linux/elfcore.h> -#include <linux/string.h> -#include <linux/interrupt.h> -#include <linux/screen_info.h> -#include <linux/vt_kern.h> -#include <linux/nvram.h> -#include <linux/irq.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/bitops.h> +#include <linux/ftrace.h> +#include <linux/mm.h> -#include <asm/page.h> #include <asm/processor.h> -#include <asm/cacheflush.h> -#include <asm/uaccess.h> -#include <asm/io.h> -#include <linux/atomic.h> -#include <asm/checksum.h> -#include <asm/pgtable.h> -#include <asm/tlbflush.h> -#include <linux/adb.h> -#include <linux/cuda.h> -#include <linux/pmu.h> -#include <asm/prom.h> -#include <asm/pci-bridge.h> -#include <asm/irq.h> -#include <asm/pmac_feature.h> -#include <asm/dma.h> -#include <asm/machdep.h> -#include <asm/hw_irq.h> -#include <asm/nvram.h> -#include <asm/mmu_context.h> -#include <asm/backlight.h> -#include <asm/time.h> -#include <asm/cputable.h> -#include <asm/btext.h> -#include <asm/div64.h> -#include <asm/signal.h> -#include <asm/dcr.h> -#include <asm/ftrace.h> #include <asm/switch_to.h> +#include <asm/cacheflush.h> #include <asm/epapr_hcalls.h> -#ifdef CONFIG_PPC32 -extern void transfer_to_handler(void); -extern void do_IRQ(struct pt_regs *regs); -extern void machine_check_exception(struct pt_regs *regs); -extern void alignment_exception(struct pt_regs *regs); -extern void program_check_exception(struct pt_regs *regs); -extern void single_step_exception(struct pt_regs *regs); -extern int sys_sigreturn(struct pt_regs *regs); +EXPORT_SYMBOL(flush_dcache_range); +EXPORT_SYMBOL(flush_icache_range); -EXPORT_SYMBOL(clear_pages); -EXPORT_SYMBOL(ISA_DMA_THRESHOLD); -EXPORT_SYMBOL(DMA_MODE_READ); -EXPORT_SYMBOL(DMA_MODE_WRITE); +EXPORT_SYMBOL(empty_zero_page); -EXPORT_SYMBOL(transfer_to_handler); -EXPORT_SYMBOL(do_IRQ); -EXPORT_SYMBOL(machine_check_exception); -EXPORT_SYMBOL(alignment_exception); -EXPORT_SYMBOL(program_check_exception); -EXPORT_SYMBOL(single_step_exception); -EXPORT_SYMBOL(sys_sigreturn); -#endif +long long __bswapdi2(long long); +EXPORT_SYMBOL(__bswapdi2); #ifdef CONFIG_FUNCTION_TRACER EXPORT_SYMBOL(_mcount); #endif -EXPORT_SYMBOL(strcpy); -EXPORT_SYMBOL(strncpy); -EXPORT_SYMBOL(strcat); -EXPORT_SYMBOL(strlen); -EXPORT_SYMBOL(strcmp); -EXPORT_SYMBOL(strncmp); - -#ifndef CONFIG_GENERIC_CSUM -EXPORT_SYMBOL(csum_partial); -EXPORT_SYMBOL(csum_partial_copy_generic); -EXPORT_SYMBOL(ip_fast_csum); -EXPORT_SYMBOL(csum_tcpudp_magic); -#endif - -EXPORT_SYMBOL(__copy_tofrom_user); -EXPORT_SYMBOL(__clear_user); -EXPORT_SYMBOL(copy_page); - -#if defined(CONFIG_PCI) && defined(CONFIG_PPC32) -EXPORT_SYMBOL(isa_io_base); -EXPORT_SYMBOL(isa_mem_base); -EXPORT_SYMBOL(pci_dram_offset); -#endif /* CONFIG_PCI */ - -EXPORT_SYMBOL(start_thread); - #ifdef CONFIG_PPC_FPU EXPORT_SYMBOL(giveup_fpu); EXPORT_SYMBOL(load_fp_state); EXPORT_SYMBOL(store_fp_state); #endif + #ifdef CONFIG_ALTIVEC EXPORT_SYMBOL(giveup_altivec); EXPORT_SYMBOL(load_vr_state); EXPORT_SYMBOL(store_vr_state); -#endif /* CONFIG_ALTIVEC */ -#ifdef CONFIG_VSX -EXPORT_SYMBOL(giveup_vsx); -EXPORT_SYMBOL_GPL(__giveup_vsx); -#endif /* CONFIG_VSX */ -#ifdef CONFIG_SPE -EXPORT_SYMBOL(giveup_spe); -#endif /* CONFIG_SPE */ - -#ifndef CONFIG_PPC64 -EXPORT_SYMBOL(flush_instruction_cache); #endif -EXPORT_SYMBOL(flush_dcache_range); -EXPORT_SYMBOL(flush_icache_range); -#ifdef CONFIG_SMP -#ifdef CONFIG_PPC32 -EXPORT_SYMBOL(smp_hw_index); -#endif -#endif - -#ifdef CONFIG_ADB -EXPORT_SYMBOL(adb_request); -EXPORT_SYMBOL(adb_register); -EXPORT_SYMBOL(adb_unregister); -EXPORT_SYMBOL(adb_poll); -EXPORT_SYMBOL(adb_try_handler_change); -#endif /* CONFIG_ADB */ -#ifdef CONFIG_ADB_CUDA -EXPORT_SYMBOL(cuda_request); -EXPORT_SYMBOL(cuda_poll); -#endif /* CONFIG_ADB_CUDA */ -EXPORT_SYMBOL(to_tm); - -#ifdef CONFIG_PPC32 -long long __ashrdi3(long long, int); -long long __ashldi3(long long, int); -long long __lshrdi3(long long, int); -EXPORT_SYMBOL(__ashrdi3); -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__lshrdi3); -int __ucmpdi2(unsigned long long, unsigned long long); -EXPORT_SYMBOL(__ucmpdi2); -int __cmpdi2(long long, long long); -EXPORT_SYMBOL(__cmpdi2); -#endif -long long __bswapdi2(long long); -EXPORT_SYMBOL(__bswapdi2); -EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(memset); -EXPORT_SYMBOL(memmove); -EXPORT_SYMBOL(memcmp); -EXPORT_SYMBOL(memchr); - -#if defined(CONFIG_FB_VGA16_MODULE) -EXPORT_SYMBOL(screen_info); -#endif - -#ifdef CONFIG_PPC32 -EXPORT_SYMBOL(timer_interrupt); -EXPORT_SYMBOL(tb_ticks_per_jiffy); -EXPORT_SYMBOL(cacheable_memcpy); -EXPORT_SYMBOL(cacheable_memzero); -#endif - -#ifdef CONFIG_PPC32 -EXPORT_SYMBOL(switch_mmu_context); -#endif - -#ifdef CONFIG_PPC_STD_MMU_32 -extern long mol_trampoline; -EXPORT_SYMBOL(mol_trampoline); /* For MOL */ -EXPORT_SYMBOL(flush_hash_pages); /* For MOL */ -#ifdef CONFIG_SMP -extern int mmu_hash_lock; -EXPORT_SYMBOL(mmu_hash_lock); /* For MOL */ -#endif /* CONFIG_SMP */ -extern long *intercept_table; -EXPORT_SYMBOL(intercept_table); -#endif /* CONFIG_PPC_STD_MMU_32 */ -#ifdef CONFIG_PPC_DCR_NATIVE -EXPORT_SYMBOL(__mtdcr); -EXPORT_SYMBOL(__mfdcr); -#endif -EXPORT_SYMBOL(empty_zero_page); - -#ifdef CONFIG_PPC64 -EXPORT_SYMBOL(__arch_hweight8); -EXPORT_SYMBOL(__arch_hweight16); -EXPORT_SYMBOL(__arch_hweight32); -EXPORT_SYMBOL(__arch_hweight64); +#ifdef CONFIG_VSX +EXPORT_SYMBOL_GPL(__giveup_vsx); #endif -#ifdef CONFIG_PPC_BOOK3S_64 -EXPORT_SYMBOL_GPL(mmu_psize_defs); +#ifdef CONFIG_SPE +EXPORT_SYMBOL(giveup_spe); #endif #ifdef CONFIG_EPAPR_PARAVIRT diff --git a/arch/powerpc/kernel/ppc_ksyms_32.c b/arch/powerpc/kernel/ppc_ksyms_32.c new file mode 100644 index 0000000..30ddd8a --- /dev/null +++ b/arch/powerpc/kernel/ppc_ksyms_32.c @@ -0,0 +1,61 @@ +#include <linux/export.h> +#include <linux/smp.h> + +#include <asm/page.h> +#include <asm/dma.h> +#include <asm/io.h> +#include <asm/hw_irq.h> +#include <asm/time.h> +#include <asm/mmu_context.h> +#include <asm/pgtable.h> +#include <asm/dcr.h> + +EXPORT_SYMBOL(clear_pages); +EXPORT_SYMBOL(ISA_DMA_THRESHOLD); +EXPORT_SYMBOL(DMA_MODE_READ); +EXPORT_SYMBOL(DMA_MODE_WRITE); + +#if defined(CONFIG_PCI) +EXPORT_SYMBOL(isa_io_base); +EXPORT_SYMBOL(isa_mem_base); +EXPORT_SYMBOL(pci_dram_offset); +#endif + +#ifdef CONFIG_SMP +EXPORT_SYMBOL(smp_hw_index); +#endif + +long long __ashrdi3(long long, int); +long long __ashldi3(long long, int); +long long __lshrdi3(long long, int); +int __ucmpdi2(unsigned long long, unsigned long long); +int __cmpdi2(long long, long long); +EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__ashldi3); +EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(__ucmpdi2); +EXPORT_SYMBOL(__cmpdi2); + +EXPORT_SYMBOL(timer_interrupt); +EXPORT_SYMBOL(tb_ticks_per_jiffy); + +EXPORT_SYMBOL(switch_mmu_context); + +#ifdef CONFIG_PPC_STD_MMU_32 +extern long mol_trampoline; +EXPORT_SYMBOL(mol_trampoline); /* For MOL */ +EXPORT_SYMBOL(flush_hash_pages); /* For MOL */ +#ifdef CONFIG_SMP +extern int mmu_hash_lock; +EXPORT_SYMBOL(mmu_hash_lock); /* For MOL */ +#endif /* CONFIG_SMP */ +extern long *intercept_table; +EXPORT_SYMBOL(intercept_table); +#endif /* CONFIG_PPC_STD_MMU_32 */ + +#ifdef CONFIG_PPC_DCR_NATIVE +EXPORT_SYMBOL(__mtdcr); +EXPORT_SYMBOL(__mfdcr); +#endif + +EXPORT_SYMBOL(flush_instruction_cache); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index bf44ae9..aa1df89 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -228,6 +228,7 @@ void giveup_vsx(struct task_struct *tsk) giveup_altivec_maybe_transactional(tsk); __giveup_vsx(tsk); } +EXPORT_SYMBOL(giveup_vsx); void flush_vsx_to_thread(struct task_struct *tsk) { @@ -1316,6 +1317,7 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp) current->thread.tm_tfiar = 0; #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ } +EXPORT_SYMBOL(start_thread); #define PR_FP_ALL_EXCEPT (PR_FP_EXC_DIV | PR_FP_EXC_OVF | PR_FP_EXC_UND \ | PR_FP_EXC_RES | PR_FP_EXC_INV) diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 4e139f8..099f27e 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -386,8 +386,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node, return 0; } -int __init early_init_dt_scan_chosen_ppc(unsigned long node, const char *uname, - int depth, void *data) +static int __init early_init_dt_scan_chosen_ppc(unsigned long node, + const char *uname, + int depth, void *data) { const unsigned long *lprop; /* All these set by kernel, so no need to convert endian */ @@ -641,6 +642,10 @@ void __init early_init_devtree(void *params) DBG(" -> early_init_devtree(%p)\n", params); + /* Too early to BUG_ON(), do it by hand */ + if (!early_init_dt_verify(params)) + panic("BUG: Failed verifying flat device tree, bad version?"); + /* Setup flat device-tree pointer */ initial_boot_params = params; @@ -663,14 +668,12 @@ void __init early_init_devtree(void *params) * device-tree, including the platform type, initrd location and * size, TCE reserve, and more ... */ - of_scan_flat_dt(early_init_dt_scan_chosen_ppc, cmd_line); + of_scan_flat_dt(early_init_dt_scan_chosen_ppc, boot_command_line); /* Scan memory nodes and rebuild MEMBLOCKs */ of_scan_flat_dt(early_init_dt_scan_root, NULL); of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL); - /* Save command line for /proc/cmdline and then parse parameters */ - strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE); parse_early_param(); /* make sure we've parsed cmdline for mem= before this */ diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh index fe8e54b..12640f7 100644 --- a/arch/powerpc/kernel/prom_init_check.sh +++ b/arch/powerpc/kernel/prom_init_check.sh @@ -50,24 +50,14 @@ do done # ignore register save/restore funcitons - if [ "${UNDEF:0:9}" = "_restgpr_" ]; then + case $UNDEF in + _restgpr_*|_restgpr0_*|_rest32gpr_*) OK=1 - fi - if [ "${UNDEF:0:10}" = "_restgpr0_" ]; then - OK=1 - fi - if [ "${UNDEF:0:11}" = "_rest32gpr_" ]; then - OK=1 - fi - if [ "${UNDEF:0:9}" = "_savegpr_" ]; then + ;; + _savegpr_*|_savegpr0_*|_save32gpr_*) OK=1 - fi - if [ "${UNDEF:0:10}" = "_savegpr0_" ]; then - OK=1 - fi - if [ "${UNDEF:0:11}" = "_save32gpr_" ]; then - OK=1 - fi + ;; + esac if [ $OK -eq 0 ]; then ERROR=1 diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 2e3d2bf..cdb404e 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -932,7 +932,7 @@ void ptrace_triggered(struct perf_event *bp, } #endif /* CONFIG_HAVE_HW_BREAKPOINT */ -int ptrace_set_debugreg(struct task_struct *task, unsigned long addr, +static int ptrace_set_debugreg(struct task_struct *task, unsigned long addr, unsigned long data) { #ifdef CONFIG_HAVE_HW_BREAKPOINT diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c index e736387..5a2c049 100644 --- a/arch/powerpc/kernel/rtasd.c +++ b/arch/powerpc/kernel/rtasd.c @@ -286,7 +286,7 @@ static void prrn_work_fn(struct work_struct *work) static DECLARE_WORK(prrn_work, prrn_work_fn); -void prrn_schedule_update(u32 scope) +static void prrn_schedule_update(u32 scope) { flush_work(&prrn_work); prrn_update_scope = scope; diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 1b0e260..1362cd6 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -81,8 +81,6 @@ EXPORT_SYMBOL_GPL(boot_cpuid); unsigned long klimit = (unsigned long) _end; -char cmd_line[COMMAND_LINE_SIZE]; - /* * This still seems to be needed... -- paulus */ @@ -94,6 +92,9 @@ struct screen_info screen_info = { .orig_video_isVGA = 1, .orig_video_points = 16 }; +#if defined(CONFIG_FB_VGA16_MODULE) +EXPORT_SYMBOL(screen_info); +#endif /* Variables required to store legacy IO irq routing */ int of_i8042_kbd_irq; @@ -382,7 +383,7 @@ void __init check_for_initrd(void) initrd_start = initrd_end = 0; if (initrd_start) - printk("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); + pr_info("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); DBG(" <- check_for_initrd()\n"); #endif /* CONFIG_BLK_DEV_INITRD */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index ea4fda6..07831ed 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -268,7 +268,7 @@ static void __init exc_lvl_early_init(void) /* Warning, IO base is not yet inited */ void __init setup_arch(char **cmdline_p) { - *cmdline_p = cmd_line; + *cmdline_p = boot_command_line; /* so udelay does something sensible, assume <= 1000 bogomips */ loops_per_jiffy = 500000000 / HZ; diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 75d62d63..cd07d79 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -525,21 +525,31 @@ void __init setup_system(void) printk("Starting Linux PPC64 %s\n", init_utsname()->version); printk("-----------------------------------------------------\n"); - printk("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); - printk("physicalMemorySize = 0x%llx\n", memblock_phys_mem_size()); + printk("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); + printk("phys_mem_size = 0x%llx\n", memblock_phys_mem_size()); + if (ppc64_caches.dline_size != 0x80) - printk("ppc64_caches.dcache_line_size = 0x%x\n", - ppc64_caches.dline_size); + printk("dcache_line_size = 0x%x\n", ppc64_caches.dline_size); if (ppc64_caches.iline_size != 0x80) - printk("ppc64_caches.icache_line_size = 0x%x\n", - ppc64_caches.iline_size); + printk("icache_line_size = 0x%x\n", ppc64_caches.iline_size); + + printk("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features); + printk(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE); + printk(" always = 0x%016lx\n", CPU_FTRS_ALWAYS); + printk("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features, + cur_cpu_spec->cpu_user_features2); + printk("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features); + printk("firmware_features = 0x%016lx\n", powerpc_firmware_features); + #ifdef CONFIG_PPC_STD_MMU_64 if (htab_address) - printk("htab_address = 0x%p\n", htab_address); - printk("htab_hash_mask = 0x%lx\n", htab_hash_mask); -#endif /* CONFIG_PPC_STD_MMU_64 */ + printk("htab_address = 0x%p\n", htab_address); + + printk("htab_hash_mask = 0x%lx\n", htab_hash_mask); +#endif + if (PHYSICAL_START > 0) - printk("physical_start = 0x%llx\n", + printk("physical_start = 0x%llx\n", (unsigned long long)PHYSICAL_START); printk("-----------------------------------------------------\n"); @@ -657,7 +667,7 @@ void __init setup_arch(char **cmdline_p) { ppc64_boot_msg(0x12, "Setup Arch"); - *cmdline_p = cmd_line; + *cmdline_p = boot_command_line; /* * Set cache line size based on type of cpu as a default. diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index a0738af..71e186d 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -52,6 +52,7 @@ #endif #include <asm/vdso.h> #include <asm/debug.h> +#include <asm/kexec.h> #ifdef DEBUG #include <asm/udbg.h> @@ -379,8 +380,11 @@ void __init smp_prepare_cpus(unsigned int max_cpus) /* * numa_node_id() works after this. */ - set_cpu_numa_node(cpu, numa_cpu_lookup_table[cpu]); - set_cpu_numa_mem(cpu, local_memory_node(numa_cpu_lookup_table[cpu])); + if (cpu_present(cpu)) { + set_cpu_numa_node(cpu, numa_cpu_lookup_table[cpu]); + set_cpu_numa_mem(cpu, + local_memory_node(numa_cpu_lookup_table[cpu])); + } } cpumask_set_cpu(boot_cpuid, cpu_sibling_mask(boot_cpuid)); @@ -728,6 +732,9 @@ void start_secondary(void *unused) } traverse_core_siblings(cpu, true); + set_numa_node(numa_cpu_lookup_table[cpu]); + set_numa_mem(local_memory_node(numa_cpu_lookup_table[cpu])); + smp_wmb(); notify_cpu_starting(cpu); set_cpu_online(cpu, true); diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 368ab37..7505599 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -479,7 +479,7 @@ void arch_irq_work_raise(void) #endif /* CONFIG_IRQ_WORK */ -void __timer_interrupt(void) +static void __timer_interrupt(void) { struct pt_regs *regs = get_irq_regs(); u64 *next_tb = &__get_cpu_var(decrementers_next_tb); @@ -643,7 +643,7 @@ static int __init get_freq(char *name, int cells, unsigned long *val) return found; } -void start_cpu_decrementer(void) +static void start_cpu_decrementer(void) { #if defined(CONFIG_BOOKE) || defined(CONFIG_40x) /* Clear any pending timer interrupts */ @@ -1024,6 +1024,7 @@ void to_tm(int tim, struct rtc_time * tm) */ GregorianDay(tm); } +EXPORT_SYMBOL(to_tm); /* * Divide a 128-bit dividend by a 32-bit divisor, leaving a 128 bit diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 59fa2de..9f342f1 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -10,7 +10,7 @@ CFLAGS_REMOVE_code-patching.o = -pg CFLAGS_REMOVE_feature-fixups.o = -pg obj-y := string.o alloc.o \ - crtsavres.o + crtsavres.o ppc_ksyms.o obj-$(CONFIG_PPC32) += div64.o copy_32.o obj-$(CONFIG_HAS_IOMEM) += devres.o diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index 7a8a748..7ce3870 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -164,7 +164,7 @@ static long calc_offset(struct fixup_entry *entry, unsigned int *p) return (unsigned long)p - (unsigned long)entry; } -void test_basic_patching(void) +static void test_basic_patching(void) { extern unsigned int ftr_fixup_test1; extern unsigned int end_ftr_fixup_test1; diff --git a/arch/powerpc/lib/ppc_ksyms.c b/arch/powerpc/lib/ppc_ksyms.c new file mode 100644 index 0000000..f993959 --- /dev/null +++ b/arch/powerpc/lib/ppc_ksyms.c @@ -0,0 +1,39 @@ +#include <linux/string.h> +#include <linux/uaccess.h> +#include <linux/bitops.h> +#include <net/checksum.h> + +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memset); +EXPORT_SYMBOL(memmove); +EXPORT_SYMBOL(memcmp); +EXPORT_SYMBOL(memchr); +#ifdef CONFIG_PPC32 +EXPORT_SYMBOL(cacheable_memcpy); +EXPORT_SYMBOL(cacheable_memzero); +#endif + +EXPORT_SYMBOL(strcpy); +EXPORT_SYMBOL(strncpy); +EXPORT_SYMBOL(strcat); +EXPORT_SYMBOL(strlen); +EXPORT_SYMBOL(strcmp); +EXPORT_SYMBOL(strncmp); + +#ifndef CONFIG_GENERIC_CSUM +EXPORT_SYMBOL(csum_partial); +EXPORT_SYMBOL(csum_partial_copy_generic); +EXPORT_SYMBOL(ip_fast_csum); +EXPORT_SYMBOL(csum_tcpudp_magic); +#endif + +EXPORT_SYMBOL(__copy_tofrom_user); +EXPORT_SYMBOL(__clear_user); +EXPORT_SYMBOL(copy_page); + +#ifdef CONFIG_PPC64 +EXPORT_SYMBOL(__arch_hweight8); +EXPORT_SYMBOL(__arch_hweight16); +EXPORT_SYMBOL(__arch_hweight32); +EXPORT_SYMBOL(__arch_hweight64); +#endif diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index 5c09f36..54651fc 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -98,13 +98,8 @@ static unsigned long __kprobes dform_ea(unsigned int instr, struct pt_regs *regs ra = (instr >> 16) & 0x1f; ea = (signed short) instr; /* sign-extend */ - if (ra) { + if (ra) ea += regs->gpr[ra]; - if (instr & 0x04000000) { /* update forms */ - if ((instr>>26) != 47) /* stmw is not an update form */ - regs->gpr[ra] = ea; - } - } return truncate_if_32bit(regs->msr, ea); } @@ -120,11 +115,8 @@ static unsigned long __kprobes dsform_ea(unsigned int instr, struct pt_regs *reg ra = (instr >> 16) & 0x1f; ea = (signed short) (instr & ~3); /* sign-extend */ - if (ra) { + if (ra) ea += regs->gpr[ra]; - if ((instr & 3) == 1) /* update forms */ - regs->gpr[ra] = ea; - } return truncate_if_32bit(regs->msr, ea); } @@ -133,8 +125,8 @@ static unsigned long __kprobes dsform_ea(unsigned int instr, struct pt_regs *reg /* * Calculate effective address for an X-form instruction */ -static unsigned long __kprobes xform_ea(unsigned int instr, struct pt_regs *regs, - int do_update) +static unsigned long __kprobes xform_ea(unsigned int instr, + struct pt_regs *regs) { int ra, rb; unsigned long ea; @@ -142,11 +134,8 @@ static unsigned long __kprobes xform_ea(unsigned int instr, struct pt_regs *regs ra = (instr >> 16) & 0x1f; rb = (instr >> 11) & 0x1f; ea = regs->gpr[rb]; - if (ra) { + if (ra) ea += regs->gpr[ra]; - if (do_update) /* update forms */ - regs->gpr[ra] = ea; - } return truncate_if_32bit(regs->msr, ea); } @@ -611,6 +600,23 @@ static void __kprobes do_cmp_unsigned(struct pt_regs *regs, unsigned long v1, regs->ccr = (regs->ccr & ~(0xf << shift)) | (crval << shift); } +static int __kprobes trap_compare(long v1, long v2) +{ + int ret = 0; + + if (v1 < v2) + ret |= 0x10; + else if (v1 > v2) + ret |= 0x08; + else + ret |= 0x04; + if ((unsigned long)v1 < (unsigned long)v2) + ret |= 0x02; + else if ((unsigned long)v1 > (unsigned long)v2) + ret |= 0x01; + return ret; +} + /* * Elements of 32-bit rotate and mask instructions. */ @@ -627,26 +633,27 @@ static void __kprobes do_cmp_unsigned(struct pt_regs *regs, unsigned long v1, #define ROTATE(x, n) ((n) ? (((x) << (n)) | ((x) >> (8 * sizeof(long) - (n)))) : (x)) /* - * Emulate instructions that cause a transfer of control, - * loads and stores, and a few other instructions. - * Returns 1 if the step was emulated, 0 if not, - * or -1 if the instruction is one that should not be stepped, - * such as an rfid, or a mtmsrd that would clear MSR_RI. + * Decode an instruction, and execute it if that can be done just by + * modifying *regs (i.e. integer arithmetic and logical instructions, + * branches, and barrier instructions). + * Returns 1 if the instruction has been executed, or 0 if not. + * Sets *op to indicate what the instruction does. */ -int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) +int __kprobes analyse_instr(struct instruction_op *op, struct pt_regs *regs, + unsigned int instr) { unsigned int opcode, ra, rb, rd, spr, u; unsigned long int imm; unsigned long int val, val2; - unsigned long int ea; - unsigned int cr, mb, me, sh; - int err; - unsigned long old_ra, val3; + unsigned int mb, me, sh; long ival; + op->type = COMPUTE; + opcode = instr >> 26; switch (opcode) { case 16: /* bc */ + op->type = BRANCH; imm = (signed short)(instr & 0xfffc); if ((instr & 2) == 0) imm += regs->nip; @@ -659,26 +666,14 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) return 1; #ifdef CONFIG_PPC64 case 17: /* sc */ - /* - * N.B. this uses knowledge about how the syscall - * entry code works. If that is changed, this will - * need to be changed also. - */ - if (regs->gpr[0] == 0x1ebe && - cpu_has_feature(CPU_FTR_REAL_LE)) { - regs->msr ^= MSR_LE; - goto instr_done; - } - regs->gpr[9] = regs->gpr[13]; - regs->gpr[10] = MSR_KERNEL; - regs->gpr[11] = regs->nip + 4; - regs->gpr[12] = regs->msr & MSR_MASK; - regs->gpr[13] = (unsigned long) get_paca(); - regs->nip = (unsigned long) &system_call_common; - regs->msr = MSR_KERNEL; - return 1; + if ((instr & 0xfe2) == 2) + op->type = SYSCALL; + else + op->type = UNKNOWN; + return 0; #endif case 18: /* b */ + op->type = BRANCH; imm = instr & 0x03fffffc; if (imm & 0x02000000) imm -= 0x04000000; @@ -691,8 +686,16 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) return 1; case 19: switch ((instr >> 1) & 0x3ff) { + case 0: /* mcrf */ + rd = (instr >> 21) & 0x1c; + ra = (instr >> 16) & 0x1c; + val = (regs->ccr >> ra) & 0xf; + regs->ccr = (regs->ccr & ~(0xfUL << rd)) | (val << rd); + goto instr_done; + case 16: /* bclr */ case 528: /* bcctr */ + op->type = BRANCH; imm = (instr & 0x400)? regs->ctr: regs->link; regs->nip = truncate_if_32bit(regs->msr, regs->nip + 4); imm = truncate_if_32bit(regs->msr, imm); @@ -703,9 +706,13 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) return 1; case 18: /* rfid, scary */ - return -1; + if (regs->msr & MSR_PR) + goto priv; + op->type = RFI; + return 0; case 150: /* isync */ + op->type = BARRIER; isync(); goto instr_done; @@ -731,6 +738,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) case 31: switch ((instr >> 1) & 0x3ff) { case 598: /* sync */ + op->type = BARRIER; #ifdef __powerpc64__ switch ((instr >> 21) & 3) { case 1: /* lwsync */ @@ -745,6 +753,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) goto instr_done; case 854: /* eieio */ + op->type = BARRIER; eieio(); goto instr_done; } @@ -760,6 +769,17 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) rb = (instr >> 11) & 0x1f; switch (opcode) { +#ifdef __powerpc64__ + case 2: /* tdi */ + if (rd & trap_compare(regs->gpr[ra], (short) instr)) + goto trap; + goto instr_done; +#endif + case 3: /* twi */ + if (rd & trap_compare((int)regs->gpr[ra], (short) instr)) + goto trap; + goto instr_done; + case 7: /* mulli */ regs->gpr[rd] = regs->gpr[ra] * (short) instr; goto instr_done; @@ -908,35 +928,44 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) case 31: switch ((instr >> 1) & 0x3ff) { + case 4: /* tw */ + if (rd == 0x1f || + (rd & trap_compare((int)regs->gpr[ra], + (int)regs->gpr[rb]))) + goto trap; + goto instr_done; +#ifdef __powerpc64__ + case 68: /* td */ + if (rd & trap_compare(regs->gpr[ra], regs->gpr[rb])) + goto trap; + goto instr_done; +#endif case 83: /* mfmsr */ if (regs->msr & MSR_PR) - break; - regs->gpr[rd] = regs->msr & MSR_MASK; - goto instr_done; + goto priv; + op->type = MFMSR; + op->reg = rd; + return 0; case 146: /* mtmsr */ if (regs->msr & MSR_PR) - break; - imm = regs->gpr[rd]; - if ((imm & MSR_RI) == 0) - /* can't step mtmsr that would clear MSR_RI */ - return -1; - regs->msr = imm; - goto instr_done; + goto priv; + op->type = MTMSR; + op->reg = rd; + op->val = 0xffffffff & ~(MSR_ME | MSR_LE); + return 0; #ifdef CONFIG_PPC64 case 178: /* mtmsrd */ - /* only MSR_EE and MSR_RI get changed if bit 15 set */ - /* mtmsrd doesn't change MSR_HV and MSR_ME */ if (regs->msr & MSR_PR) - break; - imm = (instr & 0x10000)? 0x8002: 0xefffffffffffefffUL; - imm = (regs->msr & MSR_MASK & ~imm) - | (regs->gpr[rd] & imm); - if ((imm & MSR_RI) == 0) - /* can't step mtmsrd that would clear MSR_RI */ - return -1; - regs->msr = imm; - goto instr_done; + goto priv; + op->type = MTMSR; + op->reg = rd; + /* only MSR_EE and MSR_RI get changed if bit 15 set */ + /* mtmsrd doesn't change MSR_HV, MSR_ME or MSR_LE */ + imm = (instr & 0x10000)? 0x8002: 0xefffffffffffeffeUL; + op->val = imm; + return 0; #endif + case 19: /* mfcr */ regs->gpr[rd] = regs->ccr; regs->gpr[rd] &= 0xffffffffUL; @@ -954,33 +983,43 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) goto instr_done; case 339: /* mfspr */ - spr = (instr >> 11) & 0x3ff; + spr = ((instr >> 16) & 0x1f) | ((instr >> 6) & 0x3e0); switch (spr) { - case 0x20: /* mfxer */ + case SPRN_XER: /* mfxer */ regs->gpr[rd] = regs->xer; regs->gpr[rd] &= 0xffffffffUL; goto instr_done; - case 0x100: /* mflr */ + case SPRN_LR: /* mflr */ regs->gpr[rd] = regs->link; goto instr_done; - case 0x120: /* mfctr */ + case SPRN_CTR: /* mfctr */ regs->gpr[rd] = regs->ctr; goto instr_done; + default: + op->type = MFSPR; + op->reg = rd; + op->spr = spr; + return 0; } break; case 467: /* mtspr */ - spr = (instr >> 11) & 0x3ff; + spr = ((instr >> 16) & 0x1f) | ((instr >> 6) & 0x3e0); switch (spr) { - case 0x20: /* mtxer */ + case SPRN_XER: /* mtxer */ regs->xer = (regs->gpr[rd] & 0xffffffffUL); goto instr_done; - case 0x100: /* mtlr */ + case SPRN_LR: /* mtlr */ regs->link = regs->gpr[rd]; goto instr_done; - case 0x120: /* mtctr */ + case SPRN_CTR: /* mtctr */ regs->ctr = regs->gpr[rd]; goto instr_done; + default: + op->type = MTSPR; + op->val = regs->gpr[rd]; + op->spr = spr; + return 0; } break; @@ -1257,294 +1296,242 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) * Cache instructions */ case 54: /* dcbst */ - ea = xform_ea(instr, regs, 0); - if (!address_ok(regs, ea, 8)) - return 0; - err = 0; - __cacheop_user_asmx(ea, err, "dcbst"); - if (err) - return 0; - goto instr_done; + op->type = MKOP(CACHEOP, DCBST, 0); + op->ea = xform_ea(instr, regs); + return 0; case 86: /* dcbf */ - ea = xform_ea(instr, regs, 0); - if (!address_ok(regs, ea, 8)) - return 0; - err = 0; - __cacheop_user_asmx(ea, err, "dcbf"); - if (err) - return 0; - goto instr_done; + op->type = MKOP(CACHEOP, DCBF, 0); + op->ea = xform_ea(instr, regs); + return 0; case 246: /* dcbtst */ - if (rd == 0) { - ea = xform_ea(instr, regs, 0); - prefetchw((void *) ea); - } - goto instr_done; + op->type = MKOP(CACHEOP, DCBTST, 0); + op->ea = xform_ea(instr, regs); + op->reg = rd; + return 0; case 278: /* dcbt */ - if (rd == 0) { - ea = xform_ea(instr, regs, 0); - prefetch((void *) ea); - } - goto instr_done; + op->type = MKOP(CACHEOP, DCBTST, 0); + op->ea = xform_ea(instr, regs); + op->reg = rd; + return 0; + case 982: /* icbi */ + op->type = MKOP(CACHEOP, ICBI, 0); + op->ea = xform_ea(instr, regs); + return 0; } break; } /* - * Following cases are for loads and stores, so bail out - * if we're in little-endian mode. + * Loads and stores. */ - if (regs->msr & MSR_LE) - return 0; - - /* - * Save register RA in case it's an update form load or store - * and the access faults. - */ - old_ra = regs->gpr[ra]; + op->type = UNKNOWN; + op->update_reg = ra; + op->reg = rd; + op->val = regs->gpr[rd]; + u = (instr >> 20) & UPDATE; switch (opcode) { case 31: - u = instr & 0x40; + u = instr & UPDATE; + op->ea = xform_ea(instr, regs); switch ((instr >> 1) & 0x3ff) { case 20: /* lwarx */ - ea = xform_ea(instr, regs, 0); - if (ea & 3) - break; /* can't handle misaligned */ - err = -EFAULT; - if (!address_ok(regs, ea, 4)) - goto ldst_done; - err = 0; - __get_user_asmx(val, ea, err, "lwarx"); - if (!err) - regs->gpr[rd] = val; - goto ldst_done; + op->type = MKOP(LARX, 0, 4); + break; case 150: /* stwcx. */ - ea = xform_ea(instr, regs, 0); - if (ea & 3) - break; /* can't handle misaligned */ - err = -EFAULT; - if (!address_ok(regs, ea, 4)) - goto ldst_done; - err = 0; - __put_user_asmx(regs->gpr[rd], ea, err, "stwcx.", cr); - if (!err) - regs->ccr = (regs->ccr & 0x0fffffff) | - (cr & 0xe0000000) | - ((regs->xer >> 3) & 0x10000000); - goto ldst_done; + op->type = MKOP(STCX, 0, 4); + break; #ifdef __powerpc64__ case 84: /* ldarx */ - ea = xform_ea(instr, regs, 0); - if (ea & 7) - break; /* can't handle misaligned */ - err = -EFAULT; - if (!address_ok(regs, ea, 8)) - goto ldst_done; - err = 0; - __get_user_asmx(val, ea, err, "ldarx"); - if (!err) - regs->gpr[rd] = val; - goto ldst_done; + op->type = MKOP(LARX, 0, 8); + break; case 214: /* stdcx. */ - ea = xform_ea(instr, regs, 0); - if (ea & 7) - break; /* can't handle misaligned */ - err = -EFAULT; - if (!address_ok(regs, ea, 8)) - goto ldst_done; - err = 0; - __put_user_asmx(regs->gpr[rd], ea, err, "stdcx.", cr); - if (!err) - regs->ccr = (regs->ccr & 0x0fffffff) | - (cr & 0xe0000000) | - ((regs->xer >> 3) & 0x10000000); - goto ldst_done; + op->type = MKOP(STCX, 0, 8); + break; case 21: /* ldx */ case 53: /* ldux */ - err = read_mem(®s->gpr[rd], xform_ea(instr, regs, u), - 8, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 8); + break; #endif case 23: /* lwzx */ case 55: /* lwzux */ - err = read_mem(®s->gpr[rd], xform_ea(instr, regs, u), - 4, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 4); + break; case 87: /* lbzx */ case 119: /* lbzux */ - err = read_mem(®s->gpr[rd], xform_ea(instr, regs, u), - 1, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 1); + break; #ifdef CONFIG_ALTIVEC case 103: /* lvx */ case 359: /* lvxl */ if (!(regs->msr & MSR_VEC)) - break; - ea = xform_ea(instr, regs, 0); - err = do_vec_load(rd, do_lvx, ea, regs); - goto ldst_done; + goto vecunavail; + op->type = MKOP(LOAD_VMX, 0, 16); + break; case 231: /* stvx */ case 487: /* stvxl */ if (!(regs->msr & MSR_VEC)) - break; - ea = xform_ea(instr, regs, 0); - err = do_vec_store(rd, do_stvx, ea, regs); - goto ldst_done; + goto vecunavail; + op->type = MKOP(STORE_VMX, 0, 16); + break; #endif /* CONFIG_ALTIVEC */ #ifdef __powerpc64__ case 149: /* stdx */ case 181: /* stdux */ - val = regs->gpr[rd]; - err = write_mem(val, xform_ea(instr, regs, u), 8, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 8); + break; #endif case 151: /* stwx */ case 183: /* stwux */ - val = regs->gpr[rd]; - err = write_mem(val, xform_ea(instr, regs, u), 4, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 4); + break; case 215: /* stbx */ case 247: /* stbux */ - val = regs->gpr[rd]; - err = write_mem(val, xform_ea(instr, regs, u), 1, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 1); + break; case 279: /* lhzx */ case 311: /* lhzux */ - err = read_mem(®s->gpr[rd], xform_ea(instr, regs, u), - 2, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 2); + break; #ifdef __powerpc64__ case 341: /* lwax */ case 373: /* lwaux */ - err = read_mem(®s->gpr[rd], xform_ea(instr, regs, u), - 4, regs); - if (!err) - regs->gpr[rd] = (signed int) regs->gpr[rd]; - goto ldst_done; + op->type = MKOP(LOAD, SIGNEXT | u, 4); + break; #endif case 343: /* lhax */ case 375: /* lhaux */ - err = read_mem(®s->gpr[rd], xform_ea(instr, regs, u), - 2, regs); - if (!err) - regs->gpr[rd] = (signed short) regs->gpr[rd]; - goto ldst_done; + op->type = MKOP(LOAD, SIGNEXT | u, 2); + break; case 407: /* sthx */ case 439: /* sthux */ - val = regs->gpr[rd]; - err = write_mem(val, xform_ea(instr, regs, u), 2, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 2); + break; #ifdef __powerpc64__ case 532: /* ldbrx */ - err = read_mem(&val, xform_ea(instr, regs, 0), 8, regs); - if (!err) - regs->gpr[rd] = byterev_8(val); - goto ldst_done; + op->type = MKOP(LOAD, BYTEREV, 8); + break; #endif + case 533: /* lswx */ + op->type = MKOP(LOAD_MULTI, 0, regs->xer & 0x7f); + break; case 534: /* lwbrx */ - err = read_mem(&val, xform_ea(instr, regs, 0), 4, regs); - if (!err) - regs->gpr[rd] = byterev_4(val); - goto ldst_done; + op->type = MKOP(LOAD, BYTEREV, 4); + break; + + case 597: /* lswi */ + if (rb == 0) + rb = 32; /* # bytes to load */ + op->type = MKOP(LOAD_MULTI, 0, rb); + op->ea = 0; + if (ra) + op->ea = truncate_if_32bit(regs->msr, + regs->gpr[ra]); + break; #ifdef CONFIG_PPC_FPU case 535: /* lfsx */ case 567: /* lfsux */ if (!(regs->msr & MSR_FP)) - break; - ea = xform_ea(instr, regs, u); - err = do_fp_load(rd, do_lfs, ea, 4, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(LOAD_FP, u, 4); + break; case 599: /* lfdx */ case 631: /* lfdux */ if (!(regs->msr & MSR_FP)) - break; - ea = xform_ea(instr, regs, u); - err = do_fp_load(rd, do_lfd, ea, 8, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(LOAD_FP, u, 8); + break; case 663: /* stfsx */ case 695: /* stfsux */ if (!(regs->msr & MSR_FP)) - break; - ea = xform_ea(instr, regs, u); - err = do_fp_store(rd, do_stfs, ea, 4, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(STORE_FP, u, 4); + break; case 727: /* stfdx */ case 759: /* stfdux */ if (!(regs->msr & MSR_FP)) - break; - ea = xform_ea(instr, regs, u); - err = do_fp_store(rd, do_stfd, ea, 8, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(STORE_FP, u, 8); + break; #endif #ifdef __powerpc64__ case 660: /* stdbrx */ - val = byterev_8(regs->gpr[rd]); - err = write_mem(val, xform_ea(instr, regs, 0), 8, regs); - goto ldst_done; + op->type = MKOP(STORE, BYTEREV, 8); + op->val = byterev_8(regs->gpr[rd]); + break; #endif + case 661: /* stswx */ + op->type = MKOP(STORE_MULTI, 0, regs->xer & 0x7f); + break; + case 662: /* stwbrx */ - val = byterev_4(regs->gpr[rd]); - err = write_mem(val, xform_ea(instr, regs, 0), 4, regs); - goto ldst_done; + op->type = MKOP(STORE, BYTEREV, 4); + op->val = byterev_4(regs->gpr[rd]); + break; + + case 725: + if (rb == 0) + rb = 32; /* # bytes to store */ + op->type = MKOP(STORE_MULTI, 0, rb); + op->ea = 0; + if (ra) + op->ea = truncate_if_32bit(regs->msr, + regs->gpr[ra]); + break; case 790: /* lhbrx */ - err = read_mem(&val, xform_ea(instr, regs, 0), 2, regs); - if (!err) - regs->gpr[rd] = byterev_2(val); - goto ldst_done; + op->type = MKOP(LOAD, BYTEREV, 2); + break; case 918: /* sthbrx */ - val = byterev_2(regs->gpr[rd]); - err = write_mem(val, xform_ea(instr, regs, 0), 2, regs); - goto ldst_done; + op->type = MKOP(STORE, BYTEREV, 2); + op->val = byterev_2(regs->gpr[rd]); + break; #ifdef CONFIG_VSX case 844: /* lxvd2x */ case 876: /* lxvd2ux */ if (!(regs->msr & MSR_VSX)) - break; - rd |= (instr & 1) << 5; - ea = xform_ea(instr, regs, u); - err = do_vsx_load(rd, do_lxvd2x, ea, regs); - goto ldst_done; + goto vsxunavail; + op->reg = rd | ((instr & 1) << 5); + op->type = MKOP(LOAD_VSX, u, 16); + break; case 972: /* stxvd2x */ case 1004: /* stxvd2ux */ if (!(regs->msr & MSR_VSX)) - break; - rd |= (instr & 1) << 5; - ea = xform_ea(instr, regs, u); - err = do_vsx_store(rd, do_stxvd2x, ea, regs); - goto ldst_done; + goto vsxunavail; + op->reg = rd | ((instr & 1) << 5); + op->type = MKOP(STORE_VSX, u, 16); + break; #endif /* CONFIG_VSX */ } @@ -1552,178 +1539,123 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) case 32: /* lwz */ case 33: /* lwzu */ - err = read_mem(®s->gpr[rd], dform_ea(instr, regs), 4, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 4); + op->ea = dform_ea(instr, regs); + break; case 34: /* lbz */ case 35: /* lbzu */ - err = read_mem(®s->gpr[rd], dform_ea(instr, regs), 1, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 1); + op->ea = dform_ea(instr, regs); + break; case 36: /* stw */ - val = regs->gpr[rd]; - err = write_mem(val, dform_ea(instr, regs), 4, regs); - goto ldst_done; - case 37: /* stwu */ - val = regs->gpr[rd]; - val3 = dform_ea(instr, regs); - /* - * For PPC32 we always use stwu to change stack point with r1. So - * this emulated store may corrupt the exception frame, now we - * have to provide the exception frame trampoline, which is pushed - * below the kprobed function stack. So we only update gpr[1] but - * don't emulate the real store operation. We will do real store - * operation safely in exception return code by checking this flag. - */ - if ((ra == 1) && !(regs->msr & MSR_PR) \ - && (val3 >= (regs->gpr[1] - STACK_INT_FRAME_SIZE))) { -#ifdef CONFIG_PPC32 - /* - * Check if we will touch kernel sack overflow - */ - if (val3 - STACK_INT_FRAME_SIZE <= current->thread.ksp_limit) { - printk(KERN_CRIT "Can't kprobe this since Kernel stack overflow.\n"); - err = -EINVAL; - break; - } -#endif /* CONFIG_PPC32 */ - /* - * Check if we already set since that means we'll - * lose the previous value. - */ - WARN_ON(test_thread_flag(TIF_EMULATE_STACK_STORE)); - set_thread_flag(TIF_EMULATE_STACK_STORE); - err = 0; - } else - err = write_mem(val, val3, 4, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 4); + op->ea = dform_ea(instr, regs); + break; case 38: /* stb */ case 39: /* stbu */ - val = regs->gpr[rd]; - err = write_mem(val, dform_ea(instr, regs), 1, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 1); + op->ea = dform_ea(instr, regs); + break; case 40: /* lhz */ case 41: /* lhzu */ - err = read_mem(®s->gpr[rd], dform_ea(instr, regs), 2, regs); - goto ldst_done; + op->type = MKOP(LOAD, u, 2); + op->ea = dform_ea(instr, regs); + break; case 42: /* lha */ case 43: /* lhau */ - err = read_mem(®s->gpr[rd], dform_ea(instr, regs), 2, regs); - if (!err) - regs->gpr[rd] = (signed short) regs->gpr[rd]; - goto ldst_done; + op->type = MKOP(LOAD, SIGNEXT | u, 2); + op->ea = dform_ea(instr, regs); + break; case 44: /* sth */ case 45: /* sthu */ - val = regs->gpr[rd]; - err = write_mem(val, dform_ea(instr, regs), 2, regs); - goto ldst_done; + op->type = MKOP(STORE, u, 2); + op->ea = dform_ea(instr, regs); + break; case 46: /* lmw */ - ra = (instr >> 16) & 0x1f; if (ra >= rd) break; /* invalid form, ra in range to load */ - ea = dform_ea(instr, regs); - do { - err = read_mem(®s->gpr[rd], ea, 4, regs); - if (err) - return 0; - ea += 4; - } while (++rd < 32); - goto instr_done; + op->type = MKOP(LOAD_MULTI, 0, 4 * (32 - rd)); + op->ea = dform_ea(instr, regs); + break; case 47: /* stmw */ - ea = dform_ea(instr, regs); - do { - err = write_mem(regs->gpr[rd], ea, 4, regs); - if (err) - return 0; - ea += 4; - } while (++rd < 32); - goto instr_done; + op->type = MKOP(STORE_MULTI, 0, 4 * (32 - rd)); + op->ea = dform_ea(instr, regs); + break; #ifdef CONFIG_PPC_FPU case 48: /* lfs */ case 49: /* lfsu */ if (!(regs->msr & MSR_FP)) - break; - ea = dform_ea(instr, regs); - err = do_fp_load(rd, do_lfs, ea, 4, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(LOAD_FP, u, 4); + op->ea = dform_ea(instr, regs); + break; case 50: /* lfd */ case 51: /* lfdu */ if (!(regs->msr & MSR_FP)) - break; - ea = dform_ea(instr, regs); - err = do_fp_load(rd, do_lfd, ea, 8, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(LOAD_FP, u, 8); + op->ea = dform_ea(instr, regs); + break; case 52: /* stfs */ case 53: /* stfsu */ if (!(regs->msr & MSR_FP)) - break; - ea = dform_ea(instr, regs); - err = do_fp_store(rd, do_stfs, ea, 4, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(STORE_FP, u, 4); + op->ea = dform_ea(instr, regs); + break; case 54: /* stfd */ case 55: /* stfdu */ if (!(regs->msr & MSR_FP)) - break; - ea = dform_ea(instr, regs); - err = do_fp_store(rd, do_stfd, ea, 8, regs); - goto ldst_done; + goto fpunavail; + op->type = MKOP(STORE_FP, u, 8); + op->ea = dform_ea(instr, regs); + break; #endif #ifdef __powerpc64__ case 58: /* ld[u], lwa */ + op->ea = dsform_ea(instr, regs); switch (instr & 3) { case 0: /* ld */ - err = read_mem(®s->gpr[rd], dsform_ea(instr, regs), - 8, regs); - goto ldst_done; + op->type = MKOP(LOAD, 0, 8); + break; case 1: /* ldu */ - err = read_mem(®s->gpr[rd], dsform_ea(instr, regs), - 8, regs); - goto ldst_done; + op->type = MKOP(LOAD, UPDATE, 8); + break; case 2: /* lwa */ - err = read_mem(®s->gpr[rd], dsform_ea(instr, regs), - 4, regs); - if (!err) - regs->gpr[rd] = (signed int) regs->gpr[rd]; - goto ldst_done; + op->type = MKOP(LOAD, SIGNEXT, 4); + break; } break; case 62: /* std[u] */ - val = regs->gpr[rd]; + op->ea = dsform_ea(instr, regs); switch (instr & 3) { case 0: /* std */ - err = write_mem(val, dsform_ea(instr, regs), 8, regs); - goto ldst_done; + op->type = MKOP(STORE, 0, 8); + break; case 1: /* stdu */ - err = write_mem(val, dsform_ea(instr, regs), 8, regs); - goto ldst_done; + op->type = MKOP(STORE, UPDATE, 8); + break; } break; #endif /* __powerpc64__ */ } - err = -EINVAL; - - ldst_done: - if (err) { - regs->gpr[ra] = old_ra; - return 0; /* invoke DSI if -EFAULT? */ - } - instr_done: - regs->nip = truncate_if_32bit(regs->msr, regs->nip + 4); - return 1; + return 0; logical_done: if (instr & 1) @@ -1733,5 +1665,349 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) arith_done: if (instr & 1) set_cr0(regs, rd); - goto instr_done; + + instr_done: + regs->nip = truncate_if_32bit(regs->msr, regs->nip + 4); + return 1; + + priv: + op->type = INTERRUPT | 0x700; + op->val = SRR1_PROGPRIV; + return 0; + + trap: + op->type = INTERRUPT | 0x700; + op->val = SRR1_PROGTRAP; + return 0; + +#ifdef CONFIG_PPC_FPU + fpunavail: + op->type = INTERRUPT | 0x800; + return 0; +#endif + +#ifdef CONFIG_ALTIVEC + vecunavail: + op->type = INTERRUPT | 0xf20; + return 0; +#endif + +#ifdef CONFIG_VSX + vsxunavail: + op->type = INTERRUPT | 0xf40; + return 0; +#endif +} +EXPORT_SYMBOL_GPL(analyse_instr); + +/* + * For PPC32 we always use stwu with r1 to change the stack pointer. + * So this emulated store may corrupt the exception frame, now we + * have to provide the exception frame trampoline, which is pushed + * below the kprobed function stack. So we only update gpr[1] but + * don't emulate the real store operation. We will do real store + * operation safely in exception return code by checking this flag. + */ +static __kprobes int handle_stack_update(unsigned long ea, struct pt_regs *regs) +{ +#ifdef CONFIG_PPC32 + /* + * Check if we will touch kernel stack overflow + */ + if (ea - STACK_INT_FRAME_SIZE <= current->thread.ksp_limit) { + printk(KERN_CRIT "Can't kprobe this since kernel stack would overflow.\n"); + return -EINVAL; + } +#endif /* CONFIG_PPC32 */ + /* + * Check if we already set since that means we'll + * lose the previous value. + */ + WARN_ON(test_thread_flag(TIF_EMULATE_STACK_STORE)); + set_thread_flag(TIF_EMULATE_STACK_STORE); + return 0; +} + +static __kprobes void do_signext(unsigned long *valp, int size) +{ + switch (size) { + case 2: + *valp = (signed short) *valp; + break; + case 4: + *valp = (signed int) *valp; + break; + } +} + +static __kprobes void do_byterev(unsigned long *valp, int size) +{ + switch (size) { + case 2: + *valp = byterev_2(*valp); + break; + case 4: + *valp = byterev_4(*valp); + break; +#ifdef __powerpc64__ + case 8: + *valp = byterev_8(*valp); + break; +#endif + } +} + +/* + * Emulate instructions that cause a transfer of control, + * loads and stores, and a few other instructions. + * Returns 1 if the step was emulated, 0 if not, + * or -1 if the instruction is one that should not be stepped, + * such as an rfid, or a mtmsrd that would clear MSR_RI. + */ +int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) +{ + struct instruction_op op; + int r, err, size; + unsigned long val; + unsigned int cr; + int i, rd, nb; + + r = analyse_instr(&op, regs, instr); + if (r != 0) + return r; + + err = 0; + size = GETSIZE(op.type); + switch (op.type & INSTR_TYPE_MASK) { + case CACHEOP: + if (!address_ok(regs, op.ea, 8)) + return 0; + switch (op.type & CACHEOP_MASK) { + case DCBST: + __cacheop_user_asmx(op.ea, err, "dcbst"); + break; + case DCBF: + __cacheop_user_asmx(op.ea, err, "dcbf"); + break; + case DCBTST: + if (op.reg == 0) + prefetchw((void *) op.ea); + break; + case DCBT: + if (op.reg == 0) + prefetch((void *) op.ea); + break; + case ICBI: + __cacheop_user_asmx(op.ea, err, "icbi"); + break; + } + if (err) + return 0; + goto instr_done; + + case LARX: + if (regs->msr & MSR_LE) + return 0; + if (op.ea & (size - 1)) + break; /* can't handle misaligned */ + err = -EFAULT; + if (!address_ok(regs, op.ea, size)) + goto ldst_done; + err = 0; + switch (size) { + case 4: + __get_user_asmx(val, op.ea, err, "lwarx"); + break; + case 8: + __get_user_asmx(val, op.ea, err, "ldarx"); + break; + default: + return 0; + } + if (!err) + regs->gpr[op.reg] = val; + goto ldst_done; + + case STCX: + if (regs->msr & MSR_LE) + return 0; + if (op.ea & (size - 1)) + break; /* can't handle misaligned */ + err = -EFAULT; + if (!address_ok(regs, op.ea, size)) + goto ldst_done; + err = 0; + switch (size) { + case 4: + __put_user_asmx(op.val, op.ea, err, "stwcx.", cr); + break; + case 8: + __put_user_asmx(op.val, op.ea, err, "stdcx.", cr); + break; + default: + return 0; + } + if (!err) + regs->ccr = (regs->ccr & 0x0fffffff) | + (cr & 0xe0000000) | + ((regs->xer >> 3) & 0x10000000); + goto ldst_done; + + case LOAD: + if (regs->msr & MSR_LE) + return 0; + err = read_mem(®s->gpr[op.reg], op.ea, size, regs); + if (!err) { + if (op.type & SIGNEXT) + do_signext(®s->gpr[op.reg], size); + if (op.type & BYTEREV) + do_byterev(®s->gpr[op.reg], size); + } + goto ldst_done; + + case LOAD_FP: + if (regs->msr & MSR_LE) + return 0; + if (size == 4) + err = do_fp_load(op.reg, do_lfs, op.ea, size, regs); + else + err = do_fp_load(op.reg, do_lfd, op.ea, size, regs); + goto ldst_done; + +#ifdef CONFIG_ALTIVEC + case LOAD_VMX: + if (regs->msr & MSR_LE) + return 0; + err = do_vec_load(op.reg, do_lvx, op.ea & ~0xfUL, regs); + goto ldst_done; +#endif +#ifdef CONFIG_VSX + case LOAD_VSX: + if (regs->msr & MSR_LE) + return 0; + err = do_vsx_load(op.reg, do_lxvd2x, op.ea, regs); + goto ldst_done; +#endif + case LOAD_MULTI: + if (regs->msr & MSR_LE) + return 0; + rd = op.reg; + for (i = 0; i < size; i += 4) { + nb = size - i; + if (nb > 4) + nb = 4; + err = read_mem(®s->gpr[rd], op.ea, nb, regs); + if (err) + return 0; + if (nb < 4) /* left-justify last bytes */ + regs->gpr[rd] <<= 32 - 8 * nb; + op.ea += 4; + ++rd; + } + goto instr_done; + + case STORE: + if (regs->msr & MSR_LE) + return 0; + if ((op.type & UPDATE) && size == sizeof(long) && + op.reg == 1 && op.update_reg == 1 && + !(regs->msr & MSR_PR) && + op.ea >= regs->gpr[1] - STACK_INT_FRAME_SIZE) { + err = handle_stack_update(op.ea, regs); + goto ldst_done; + } + err = write_mem(op.val, op.ea, size, regs); + goto ldst_done; + + case STORE_FP: + if (regs->msr & MSR_LE) + return 0; + if (size == 4) + err = do_fp_store(op.reg, do_stfs, op.ea, size, regs); + else + err = do_fp_store(op.reg, do_stfd, op.ea, size, regs); + goto ldst_done; + +#ifdef CONFIG_ALTIVEC + case STORE_VMX: + if (regs->msr & MSR_LE) + return 0; + err = do_vec_store(op.reg, do_stvx, op.ea & ~0xfUL, regs); + goto ldst_done; +#endif +#ifdef CONFIG_VSX + case STORE_VSX: + if (regs->msr & MSR_LE) + return 0; + err = do_vsx_store(op.reg, do_stxvd2x, op.ea, regs); + goto ldst_done; +#endif + case STORE_MULTI: + if (regs->msr & MSR_LE) + return 0; + rd = op.reg; + for (i = 0; i < size; i += 4) { + val = regs->gpr[rd]; + nb = size - i; + if (nb > 4) + nb = 4; + else + val >>= 32 - 8 * nb; + err = write_mem(val, op.ea, nb, regs); + if (err) + return 0; + op.ea += 4; + ++rd; + } + goto instr_done; + + case MFMSR: + regs->gpr[op.reg] = regs->msr & MSR_MASK; + goto instr_done; + + case MTMSR: + val = regs->gpr[op.reg]; + if ((val & MSR_RI) == 0) + /* can't step mtmsr[d] that would clear MSR_RI */ + return -1; + /* here op.val is the mask of bits to change */ + regs->msr = (regs->msr & ~op.val) | (val & op.val); + goto instr_done; + +#ifdef CONFIG_PPC64 + case SYSCALL: /* sc */ + /* + * N.B. this uses knowledge about how the syscall + * entry code works. If that is changed, this will + * need to be changed also. + */ + if (regs->gpr[0] == 0x1ebe && + cpu_has_feature(CPU_FTR_REAL_LE)) { + regs->msr ^= MSR_LE; + goto instr_done; + } + regs->gpr[9] = regs->gpr[13]; + regs->gpr[10] = MSR_KERNEL; + regs->gpr[11] = regs->nip + 4; + regs->gpr[12] = regs->msr & MSR_MASK; + regs->gpr[13] = (unsigned long) get_paca(); + regs->nip = (unsigned long) &system_call_common; + regs->msr = MSR_KERNEL; + return 1; + + case RFI: + return -1; +#endif + } + return 0; + + ldst_done: + if (err) + return 0; + if (op.type & UPDATE) + regs->gpr[op.update_reg] = op.ea; + + instr_done: + regs->nip = truncate_if_32bit(regs->msr, regs->nip + 4); + return 1; } diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index d0130ff..325e861 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -34,3 +34,4 @@ obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += hugepage-hash64.o obj-$(CONFIG_PPC_SUBPAGE_PROT) += subpage-prot.o obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o obj-$(CONFIG_HIGHMEM) += highmem.o +obj-$(CONFIG_PPC_COPRO_BASE) += copro_fault.o diff --git a/arch/powerpc/platforms/cell/spu_fault.c b/arch/powerpc/mm/copro_fault.c index 641e727..0f9939e 100644 --- a/arch/powerpc/platforms/cell/spu_fault.c +++ b/arch/powerpc/mm/copro_fault.c @@ -1,5 +1,5 @@ /* - * SPU mm fault handler + * CoProcessor (SPU/AFU) mm fault handler * * (C) Copyright IBM Deutschland Entwicklung GmbH 2007 * @@ -23,16 +23,17 @@ #include <linux/sched.h> #include <linux/mm.h> #include <linux/export.h> - +#include <asm/reg.h> +#include <asm/copro.h> #include <asm/spu.h> -#include <asm/spu_csa.h> +#include <misc/cxl.h> /* * This ought to be kept in sync with the powerpc specific do_page_fault * function. Currently, there are a few corner cases that we haven't had * to handle fortunately. */ -int spu_handle_mm_fault(struct mm_struct *mm, unsigned long ea, +int copro_handle_mm_fault(struct mm_struct *mm, unsigned long ea, unsigned long dsisr, unsigned *flt) { struct vm_area_struct *vma; @@ -58,12 +59,12 @@ int spu_handle_mm_fault(struct mm_struct *mm, unsigned long ea, goto out_unlock; } - is_write = dsisr & MFC_DSISR_ACCESS_PUT; + is_write = dsisr & DSISR_ISSTORE; if (is_write) { if (!(vma->vm_flags & VM_WRITE)) goto out_unlock; } else { - if (dsisr & MFC_DSISR_ACCESS_DENIED) + if (dsisr & DSISR_PROTFAULT) goto out_unlock; if (!(vma->vm_flags & (VM_READ | VM_EXEC))) goto out_unlock; @@ -91,4 +92,58 @@ out_unlock: up_read(&mm->mmap_sem); return ret; } -EXPORT_SYMBOL_GPL(spu_handle_mm_fault); +EXPORT_SYMBOL_GPL(copro_handle_mm_fault); + +int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb) +{ + u64 vsid; + int psize, ssize; + + slb->esid = (ea & ESID_MASK) | SLB_ESID_V; + + switch (REGION_ID(ea)) { + case USER_REGION_ID: + pr_devel("%s: 0x%llx -- USER_REGION_ID\n", __func__, ea); + psize = get_slice_psize(mm, ea); + ssize = user_segment_size(ea); + vsid = get_vsid(mm->context.id, ea, ssize); + break; + case VMALLOC_REGION_ID: + pr_devel("%s: 0x%llx -- VMALLOC_REGION_ID\n", __func__, ea); + if (ea < VMALLOC_END) + psize = mmu_vmalloc_psize; + else + psize = mmu_io_psize; + ssize = mmu_kernel_ssize; + vsid = get_kernel_vsid(ea, mmu_kernel_ssize); + break; + case KERNEL_REGION_ID: + pr_devel("%s: 0x%llx -- KERNEL_REGION_ID\n", __func__, ea); + psize = mmu_linear_psize; + ssize = mmu_kernel_ssize; + vsid = get_kernel_vsid(ea, mmu_kernel_ssize); + break; + default: + pr_debug("%s: invalid region access at %016llx\n", __func__, ea); + return 1; + } + + vsid = (vsid << slb_vsid_shift(ssize)) | SLB_VSID_USER; + + vsid |= mmu_psize_defs[psize].sllp | + ((ssize == MMU_SEGSIZE_1T) ? SLB_VSID_B_1T : 0); + + slb->vsid = vsid; + + return 0; +} +EXPORT_SYMBOL_GPL(copro_calculate_slb); + +void copro_flush_all_slbs(struct mm_struct *mm) +{ +#ifdef CONFIG_SPU_BASE + spu_flush_all_slbs(mm); +#endif + cxl_slbia(mm); +} +EXPORT_SYMBOL_GPL(copro_flush_all_slbs); diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 51ab9e7..24b3f49 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -33,6 +33,7 @@ #include <linux/magic.h> #include <linux/ratelimit.h> #include <linux/context_tracking.h> +#include <linux/hugetlb.h> #include <asm/firmware.h> #include <asm/page.h> @@ -114,22 +115,37 @@ static int store_updates_sp(struct pt_regs *regs) #define MM_FAULT_CONTINUE -1 #define MM_FAULT_ERR(sig) (sig) -static int do_sigbus(struct pt_regs *regs, unsigned long address) +static int do_sigbus(struct pt_regs *regs, unsigned long address, + unsigned int fault) { siginfo_t info; + unsigned int lsb = 0; up_read(¤t->mm->mmap_sem); - if (user_mode(regs)) { - current->thread.trap_nr = BUS_ADRERR; - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRERR; - info.si_addr = (void __user *)address; - force_sig_info(SIGBUS, &info, current); - return MM_FAULT_RETURN; + if (!user_mode(regs)) + return MM_FAULT_ERR(SIGBUS); + + current->thread.trap_nr = BUS_ADRERR; + info.si_signo = SIGBUS; + info.si_errno = 0; + info.si_code = BUS_ADRERR; + info.si_addr = (void __user *)address; +#ifdef CONFIG_MEMORY_FAILURE + if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) { + pr_err("MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n", + current->comm, current->pid, address); + info.si_code = BUS_MCEERR_AR; } - return MM_FAULT_ERR(SIGBUS); + + if (fault & VM_FAULT_HWPOISON_LARGE) + lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault)); + if (fault & VM_FAULT_HWPOISON) + lsb = PAGE_SHIFT; +#endif + info.si_addr_lsb = lsb; + force_sig_info(SIGBUS, &info, current); + return MM_FAULT_RETURN; } static int mm_fault_error(struct pt_regs *regs, unsigned long addr, int fault) @@ -170,11 +186,8 @@ static int mm_fault_error(struct pt_regs *regs, unsigned long addr, int fault) return MM_FAULT_RETURN; } - /* Bus error. x86 handles HWPOISON here, we'll add this if/when - * we support the feature in HW - */ - if (fault & VM_FAULT_SIGBUS) - return do_sigbus(regs, addr); + if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) + return do_sigbus(regs, addr, fault); /* We don't understand the fault code, this is fatal */ BUG(); diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index afc0a82..ae4962a 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -29,6 +29,8 @@ #include <asm/kexec.h> #include <asm/ppc-opcode.h> +#include <misc/cxl.h> + #ifdef DEBUG_LOW #define DBG_LOW(fmt...) udbg_printf(fmt) #else @@ -149,9 +151,11 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize) static inline void tlbie(unsigned long vpn, int psize, int apsize, int ssize, int local) { - unsigned int use_local = local && mmu_has_feature(MMU_FTR_TLBIEL); + unsigned int use_local; int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE); + use_local = local && mmu_has_feature(MMU_FTR_TLBIEL) && !cxl_ctx_in_use(); + if (use_local) use_local = mmu_psize_defs[psize].tlbiel; if (lock_tlbie && !use_local) diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index daee7f4..d5339a3 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -51,7 +51,7 @@ #include <asm/cacheflush.h> #include <asm/cputable.h> #include <asm/sections.h> -#include <asm/spu.h> +#include <asm/copro.h> #include <asm/udbg.h> #include <asm/code-patching.h> #include <asm/fadump.h> @@ -92,12 +92,14 @@ extern unsigned long dart_tablebase; static unsigned long _SDR1; struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT]; +EXPORT_SYMBOL_GPL(mmu_psize_defs); struct hash_pte *htab_address; unsigned long htab_size_bytes; unsigned long htab_hash_mask; EXPORT_SYMBOL_GPL(htab_hash_mask); int mmu_linear_psize = MMU_PAGE_4K; +EXPORT_SYMBOL_GPL(mmu_linear_psize); int mmu_virtual_psize = MMU_PAGE_4K; int mmu_vmalloc_psize = MMU_PAGE_4K; #ifdef CONFIG_SPARSEMEM_VMEMMAP @@ -105,6 +107,7 @@ int mmu_vmemmap_psize = MMU_PAGE_4K; #endif int mmu_io_psize = MMU_PAGE_4K; int mmu_kernel_ssize = MMU_SEGSIZE_256M; +EXPORT_SYMBOL_GPL(mmu_kernel_ssize); int mmu_highuser_ssize = MMU_SEGSIZE_256M; u16 mmu_slb_size = 64; EXPORT_SYMBOL_GPL(mmu_slb_size); @@ -333,70 +336,69 @@ static int __init htab_dt_scan_page_sizes(unsigned long node, return 0; prop = of_get_flat_dt_prop(node, "ibm,segment-page-sizes", &size); - if (prop != NULL) { - pr_info("Page sizes from device-tree:\n"); - size /= 4; - cur_cpu_spec->mmu_features &= ~(MMU_FTR_16M_PAGE); - while(size > 0) { - unsigned int base_shift = be32_to_cpu(prop[0]); - unsigned int slbenc = be32_to_cpu(prop[1]); - unsigned int lpnum = be32_to_cpu(prop[2]); - struct mmu_psize_def *def; - int idx, base_idx; - - size -= 3; prop += 3; - base_idx = get_idx_from_shift(base_shift); - if (base_idx < 0) { - /* - * skip the pte encoding also - */ - prop += lpnum * 2; size -= lpnum * 2; + if (!prop) + return 0; + + pr_info("Page sizes from device-tree:\n"); + size /= 4; + cur_cpu_spec->mmu_features &= ~(MMU_FTR_16M_PAGE); + while(size > 0) { + unsigned int base_shift = be32_to_cpu(prop[0]); + unsigned int slbenc = be32_to_cpu(prop[1]); + unsigned int lpnum = be32_to_cpu(prop[2]); + struct mmu_psize_def *def; + int idx, base_idx; + + size -= 3; prop += 3; + base_idx = get_idx_from_shift(base_shift); + if (base_idx < 0) { + /* skip the pte encoding also */ + prop += lpnum * 2; size -= lpnum * 2; + continue; + } + def = &mmu_psize_defs[base_idx]; + if (base_idx == MMU_PAGE_16M) + cur_cpu_spec->mmu_features |= MMU_FTR_16M_PAGE; + + def->shift = base_shift; + if (base_shift <= 23) + def->avpnm = 0; + else + def->avpnm = (1 << (base_shift - 23)) - 1; + def->sllp = slbenc; + /* + * We don't know for sure what's up with tlbiel, so + * for now we only set it for 4K and 64K pages + */ + if (base_idx == MMU_PAGE_4K || base_idx == MMU_PAGE_64K) + def->tlbiel = 1; + else + def->tlbiel = 0; + + while (size > 0 && lpnum) { + unsigned int shift = be32_to_cpu(prop[0]); + int penc = be32_to_cpu(prop[1]); + + prop += 2; size -= 2; + lpnum--; + + idx = get_idx_from_shift(shift); + if (idx < 0) continue; - } - def = &mmu_psize_defs[base_idx]; - if (base_idx == MMU_PAGE_16M) - cur_cpu_spec->mmu_features |= MMU_FTR_16M_PAGE; - - def->shift = base_shift; - if (base_shift <= 23) - def->avpnm = 0; - else - def->avpnm = (1 << (base_shift - 23)) - 1; - def->sllp = slbenc; - /* - * We don't know for sure what's up with tlbiel, so - * for now we only set it for 4K and 64K pages - */ - if (base_idx == MMU_PAGE_4K || base_idx == MMU_PAGE_64K) - def->tlbiel = 1; - else - def->tlbiel = 0; - - while (size > 0 && lpnum) { - unsigned int shift = be32_to_cpu(prop[0]); - int penc = be32_to_cpu(prop[1]); - - prop += 2; size -= 2; - lpnum--; - - idx = get_idx_from_shift(shift); - if (idx < 0) - continue; - - if (penc == -1) - pr_err("Invalid penc for base_shift=%d " - "shift=%d\n", base_shift, shift); - - def->penc[idx] = penc; - pr_info("base_shift=%d: shift=%d, sllp=0x%04lx," - " avpnm=0x%08lx, tlbiel=%d, penc=%d\n", - base_shift, shift, def->sllp, - def->avpnm, def->tlbiel, def->penc[idx]); - } + + if (penc == -1) + pr_err("Invalid penc for base_shift=%d " + "shift=%d\n", base_shift, shift); + + def->penc[idx] = penc; + pr_info("base_shift=%d: shift=%d, sllp=0x%04lx," + " avpnm=0x%08lx, tlbiel=%d, penc=%d\n", + base_shift, shift, def->sllp, + def->avpnm, def->tlbiel, def->penc[idx]); } - return 1; } - return 0; + + return 1; } #ifdef CONFIG_HUGETLB_PAGE @@ -867,7 +869,7 @@ unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap) } #ifdef CONFIG_PPC_MM_SLICES -unsigned int get_paca_psize(unsigned long addr) +static unsigned int get_paca_psize(unsigned long addr) { u64 lpsizes; unsigned char *hpsizes; @@ -901,10 +903,8 @@ void demote_segment_4k(struct mm_struct *mm, unsigned long addr) if (get_slice_psize(mm, addr) == MMU_PAGE_4K) return; slice_set_range_psize(mm, addr, 1, MMU_PAGE_4K); -#ifdef CONFIG_SPU_BASE - spu_flush_all_slbs(mm); -#endif - if (get_paca_psize(addr) != MMU_PAGE_4K) { + copro_flush_all_slbs(mm); + if ((get_paca_psize(addr) != MMU_PAGE_4K) && (current->mm == mm)) { get_paca()->context = mm->context; slb_flush_and_rebolt(); } @@ -989,12 +989,11 @@ static void check_paca_psize(unsigned long ea, struct mm_struct *mm, * -1 - critical hash insertion error * -2 - access not permitted by subpage protection mechanism */ -int hash_page(unsigned long ea, unsigned long access, unsigned long trap) +int hash_page_mm(struct mm_struct *mm, unsigned long ea, unsigned long access, unsigned long trap) { enum ctx_state prev_state = exception_enter(); pgd_t *pgdir; unsigned long vsid; - struct mm_struct *mm; pte_t *ptep; unsigned hugeshift; const struct cpumask *tmp; @@ -1008,7 +1007,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) switch (REGION_ID(ea)) { case USER_REGION_ID: user_region = 1; - mm = current->mm; if (! mm) { DBG_LOW(" user region with no mm !\n"); rc = 1; @@ -1019,7 +1017,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) vsid = get_vsid(mm->context.id, ea, ssize); break; case VMALLOC_REGION_ID: - mm = &init_mm; vsid = get_kernel_vsid(ea, mmu_kernel_ssize); if (ea < VMALLOC_END) psize = mmu_vmalloc_psize; @@ -1104,7 +1101,8 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) WARN_ON(1); } #endif - check_paca_psize(ea, mm, psize, user_region); + if (current->mm == mm) + check_paca_psize(ea, mm, psize, user_region); goto bail; } @@ -1141,13 +1139,12 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) "to 4kB pages because of " "non-cacheable mapping\n"); psize = mmu_vmalloc_psize = MMU_PAGE_4K; -#ifdef CONFIG_SPU_BASE - spu_flush_all_slbs(mm); -#endif + copro_flush_all_slbs(mm); } } - check_paca_psize(ea, mm, psize, user_region); + if (current->mm == mm) + check_paca_psize(ea, mm, psize, user_region); #endif /* CONFIG_PPC_64K_PAGES */ #ifdef CONFIG_PPC_HAS_HASH_64K @@ -1182,6 +1179,17 @@ bail: exception_exit(prev_state); return rc; } +EXPORT_SYMBOL_GPL(hash_page_mm); + +int hash_page(unsigned long ea, unsigned long access, unsigned long trap) +{ + struct mm_struct *mm = current->mm; + + if (REGION_ID(ea) == VMALLOC_REGION_ID) + mm = &init_mm; + + return hash_page_mm(mm, ea, access, trap); +} EXPORT_SYMBOL_GPL(hash_page); void hash_preload(struct mm_struct *mm, unsigned long ea, diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index cff59f1..cad68ff 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -106,11 +106,11 @@ unsigned long __max_low_memory = MAX_LOW_MEM; void MMU_setup(void) { /* Check for nobats option (used in mapin_ram). */ - if (strstr(cmd_line, "nobats")) { + if (strstr(boot_command_line, "nobats")) { __map_without_bats = 1; } - if (strstr(cmd_line, "noltlbs")) { + if (strstr(boot_command_line, "noltlbs")) { __map_without_ltlbs = 1; } #ifdef CONFIG_DEBUG_PAGEALLOC diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 253b4b9..3481556 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -233,9 +233,6 @@ static void __meminit vmemmap_create_mapping(unsigned long start, } #ifdef CONFIG_MEMORY_HOTPLUG -extern int htab_remove_mapping(unsigned long vstart, unsigned long vend, - int psize, int ssize); - static void vmemmap_remove_mapping(unsigned long start, unsigned long page_size) { diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index e0f7a18..8ebaac7 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -260,6 +260,60 @@ static int __init mark_nonram_nosave(void) } return 0; } +#else /* CONFIG_NEED_MULTIPLE_NODES */ +static int __init mark_nonram_nosave(void) +{ + return 0; +} +#endif + +static bool zone_limits_final; + +static unsigned long max_zone_pfns[MAX_NR_ZONES] = { + [0 ... MAX_NR_ZONES - 1] = ~0UL +}; + +/* + * Restrict the specified zone and all more restrictive zones + * to be below the specified pfn. May not be called after + * paging_init(). + */ +void __init limit_zone_pfn(enum zone_type zone, unsigned long pfn_limit) +{ + int i; + + if (WARN_ON(zone_limits_final)) + return; + + for (i = zone; i >= 0; i--) { + if (max_zone_pfns[i] > pfn_limit) + max_zone_pfns[i] = pfn_limit; + } +} + +/* + * Find the least restrictive zone that is entirely below the + * specified pfn limit. Returns < 0 if no suitable zone is found. + * + * pfn_limit must be u64 because it can exceed 32 bits even on 32-bit + * systems -- the DMA limit can be higher than any possible real pfn. + */ +int dma_pfn_limit_to_zone(u64 pfn_limit) +{ + enum zone_type top_zone = ZONE_NORMAL; + int i; + +#ifdef CONFIG_HIGHMEM + top_zone = ZONE_HIGHMEM; +#endif + + for (i = top_zone; i >= 0; i--) { + if (max_zone_pfns[i] <= pfn_limit) + return i; + } + + return -EPERM; +} /* * paging_init() sets up the page tables - in fact we've already done this. @@ -268,7 +322,7 @@ void __init paging_init(void) { unsigned long long total_ram = memblock_phys_mem_size(); phys_addr_t top_of_ram = memblock_end_of_DRAM(); - unsigned long max_zone_pfns[MAX_NR_ZONES]; + enum zone_type top_zone; #ifdef CONFIG_PPC32 unsigned long v = __fix_to_virt(__end_of_fixed_addresses - 1); @@ -290,18 +344,20 @@ void __init paging_init(void) (unsigned long long)top_of_ram, total_ram); printk(KERN_DEBUG "Memory hole size: %ldMB\n", (long int)((top_of_ram - total_ram) >> 20)); - memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); + #ifdef CONFIG_HIGHMEM - max_zone_pfns[ZONE_DMA] = lowmem_end_addr >> PAGE_SHIFT; - max_zone_pfns[ZONE_HIGHMEM] = top_of_ram >> PAGE_SHIFT; + top_zone = ZONE_HIGHMEM; + limit_zone_pfn(ZONE_NORMAL, lowmem_end_addr >> PAGE_SHIFT); #else - max_zone_pfns[ZONE_DMA] = top_of_ram >> PAGE_SHIFT; + top_zone = ZONE_NORMAL; #endif + + limit_zone_pfn(top_zone, top_of_ram >> PAGE_SHIFT); + zone_limits_final = true; free_area_init_nodes(max_zone_pfns); mark_nonram_nosave(); } -#endif /* ! CONFIG_NEED_MULTIPLE_NODES */ static void __init register_page_bootmem_info(void) { diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index d7737a5..649666d 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -538,7 +538,7 @@ static int of_drconf_to_nid_single(struct of_drconf_cell *drmem, */ static int numa_setup_cpu(unsigned long lcpu) { - int nid; + int nid = -1; struct device_node *cpu; /* @@ -555,19 +555,21 @@ static int numa_setup_cpu(unsigned long lcpu) if (!cpu) { WARN_ON(1); - nid = 0; - goto out; + if (cpu_present(lcpu)) + goto out_present; + else + goto out; } nid = of_node_to_nid_single(cpu); +out_present: if (nid < 0 || !node_online(nid)) nid = first_online_node; -out: - map_cpu_to_node(lcpu, nid); + map_cpu_to_node(lcpu, nid); of_node_put(cpu); - +out: return nid; } @@ -1127,20 +1129,11 @@ void __init do_init_bootmem(void) * even before we online them, so that we can use cpu_to_{node,mem} * early in boot, cf. smp_prepare_cpus(). */ - for_each_possible_cpu(cpu) { - cpu_numa_callback(&ppc64_numa_nb, CPU_UP_PREPARE, - (void *)(unsigned long)cpu); + for_each_present_cpu(cpu) { + numa_setup_cpu((unsigned long)cpu); } } -void __init paging_init(void) -{ - unsigned long max_zone_pfns[MAX_NR_ZONES]; - memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); - max_zone_pfns[ZONE_DMA] = memblock_end_of_DRAM() >> PAGE_SHIFT; - free_area_init_nodes(max_zone_pfns); -} - static int __init early_numa(char *p) { if (!p) diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index c695943a..c90e602 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -48,7 +48,7 @@ static inline int pte_looks_normal(pte_t pte) (_PAGE_PRESENT | _PAGE_USER); } -struct page * maybe_pte_to_page(pte_t pte) +static struct page *maybe_pte_to_page(pte_t pte) { unsigned long pfn = pte_pfn(pte); struct page *page; diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 0399a67..6e450ca 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -46,9 +46,6 @@ static inline unsigned long mk_esid_data(unsigned long ea, int ssize, return (ea & slb_esid_mask(ssize)) | SLB_ESID_V | slot; } -#define slb_vsid_shift(ssize) \ - ((ssize) == MMU_SEGSIZE_256M? SLB_VSID_SHIFT: SLB_VSID_SHIFT_1T) - static inline unsigned long mk_vsid_data(unsigned long ea, int ssize, unsigned long flags) { diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index b0c75cc..8d7bda9 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -30,9 +30,11 @@ #include <linux/err.h> #include <linux/spinlock.h> #include <linux/export.h> +#include <linux/hugetlb.h> #include <asm/mman.h> #include <asm/mmu.h> -#include <asm/spu.h> +#include <asm/copro.h> +#include <asm/hugetlb.h> /* some sanity checks */ #if (PGTABLE_RANGE >> 43) > SLICE_MASK_SIZE @@ -232,9 +234,7 @@ static void slice_convert(struct mm_struct *mm, struct slice_mask mask, int psiz spin_unlock_irqrestore(&slice_convert_lock, flags); -#ifdef CONFIG_SPU_BASE - spu_flush_all_slbs(mm); -#endif + copro_flush_all_slbs(mm); } /* @@ -671,9 +671,7 @@ void slice_set_psize(struct mm_struct *mm, unsigned long address, spin_unlock_irqrestore(&slice_convert_lock, flags); -#ifdef CONFIG_SPU_BASE - spu_flush_all_slbs(mm); -#endif + copro_flush_all_slbs(mm); } void slice_set_range_psize(struct mm_struct *mm, unsigned long start, diff --git a/arch/powerpc/oprofile/backtrace.c b/arch/powerpc/oprofile/backtrace.c index f75301f..6adf55f 100644 --- a/arch/powerpc/oprofile/backtrace.c +++ b/arch/powerpc/oprofile/backtrace.c @@ -12,6 +12,7 @@ #include <asm/processor.h> #include <asm/uaccess.h> #include <asm/compat.h> +#include <asm/oprofile_impl.h> #define STACK_SP(STACK) *(STACK) diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index b7cd00b..a6995d4 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -59,9 +59,9 @@ struct cpu_hw_events { struct perf_branch_entry bhrb_entries[BHRB_MAX_ENTRIES]; }; -DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events); +static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events); -struct power_pmu *ppmu; +static struct power_pmu *ppmu; /* * Normally, to ignore kernel events we set the FCS (freeze counters @@ -124,7 +124,7 @@ static unsigned long ebb_switch_in(bool ebb, struct cpu_hw_events *cpuhw) static inline void power_pmu_bhrb_enable(struct perf_event *event) {} static inline void power_pmu_bhrb_disable(struct perf_event *event) {} -void power_pmu_flush_branch_stack(void) {} +static void power_pmu_flush_branch_stack(void) {} static inline void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) {} static void pmao_restore_workaround(bool ebb) { } #endif /* CONFIG_PPC32 */ @@ -375,7 +375,7 @@ static void power_pmu_bhrb_disable(struct perf_event *event) /* Called from ctxsw to prevent one process's branch entries to * mingle with the other process's entries during context switch. */ -void power_pmu_flush_branch_stack(void) +static void power_pmu_flush_branch_stack(void) { if (ppmu->bhrb_nr) power_pmu_bhrb_reset(); @@ -408,7 +408,7 @@ static __u64 power_pmu_bhrb_to(u64 addr) } /* Processing BHRB entries */ -void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) +static void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) { u64 val; u64 addr; @@ -1573,7 +1573,7 @@ static void power_pmu_stop(struct perf_event *event, int ef_flags) * Set the flag to make pmu::enable() not perform the * schedulability test, it will be performed at commit time */ -void power_pmu_start_txn(struct pmu *pmu) +static void power_pmu_start_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); @@ -1587,7 +1587,7 @@ void power_pmu_start_txn(struct pmu *pmu) * Clear the flag and pmu::enable() will perform the * schedulability test. */ -void power_pmu_cancel_txn(struct pmu *pmu) +static void power_pmu_cancel_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events); @@ -1600,7 +1600,7 @@ void power_pmu_cancel_txn(struct pmu *pmu) * Perform the group schedulability test as a whole * Return 0 if success */ -int power_pmu_commit_txn(struct pmu *pmu) +static int power_pmu_commit_txn(struct pmu *pmu) { struct cpu_hw_events *cpuhw; long i, n; @@ -1888,7 +1888,7 @@ ssize_t power_events_sysfs_show(struct device *dev, return sprintf(page, "event=0x%02llx\n", pmu_attr->id); } -struct pmu power_pmu = { +static struct pmu power_pmu = { .pmu_enable = power_pmu_enable, .pmu_disable = power_pmu_disable, .event_init = power_pmu_event_init, diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 70d4f74..6c8710d 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -75,86 +75,6 @@ static struct attribute_group format_group = { static struct kmem_cache *hv_page_cache; -/* - * read_offset_data - copy data from one buffer to another while treating the - * source buffer as a small view on the total avaliable - * source data. - * - * @dest: buffer to copy into - * @dest_len: length of @dest in bytes - * @requested_offset: the offset within the source data we want. Must be > 0 - * @src: buffer to copy data from - * @src_len: length of @src in bytes - * @source_offset: the offset in the sorce data that (src,src_len) refers to. - * Must be > 0 - * - * returns the number of bytes copied. - * - * The following ascii art shows the various buffer possitioning we need to - * handle, assigns some arbitrary varibles to points on the buffer, and then - * shows how we fiddle with those values to get things we care about (copy - * start in src and copy len) - * - * s = @src buffer - * d = @dest buffer - * '.' areas in d are written to. - * - * u - * x w v z - * d |.........| - * s |----------------------| - * - * u - * x w z v - * d |........------| - * s |------------------| - * - * x w u,z,v - * d |........| - * s |------------------| - * - * x,w u,v,z - * d |..................| - * s |------------------| - * - * x u - * w v z - * d |........| - * s |------------------| - * - * x z w v - * d |------| - * s |------| - * - * x = source_offset - * w = requested_offset - * z = source_offset + src_len - * v = requested_offset + dest_len - * - * w_offset_in_s = w - x = requested_offset - source_offset - * z_offset_in_s = z - x = src_len - * v_offset_in_s = v - x = request_offset + dest_len - src_len - */ -static ssize_t read_offset_data(void *dest, size_t dest_len, - loff_t requested_offset, void *src, - size_t src_len, loff_t source_offset) -{ - size_t w_offset_in_s = requested_offset - source_offset; - size_t z_offset_in_s = src_len; - size_t v_offset_in_s = requested_offset + dest_len - src_len; - size_t u_offset_in_s = min(z_offset_in_s, v_offset_in_s); - size_t copy_len = u_offset_in_s - w_offset_in_s; - - if (requested_offset < 0 || source_offset < 0) - return -EINVAL; - - if (z_offset_in_s <= w_offset_in_s) - return 0; - - memcpy(dest, src + w_offset_in_s, copy_len); - return copy_len; -} - static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096, unsigned long version, unsigned long index) @@ -183,8 +103,10 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, { unsigned long hret; ssize_t ret = 0; - size_t catalog_len = 0, catalog_page_len = 0, page_count = 0; + size_t catalog_len = 0, catalog_page_len = 0; loff_t page_offset = 0; + loff_t offset_in_page; + size_t copy_len; uint64_t catalog_version_num = 0; void *page = kmem_cache_alloc(hv_page_cache, GFP_USER); struct hv_24x7_catalog_page_0 *page_0 = page; @@ -202,7 +124,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, catalog_len = catalog_page_len * 4096; page_offset = offset / 4096; - page_count = count / 4096; + offset_in_page = offset % 4096; if (page_offset >= catalog_page_len) goto e_free; @@ -216,8 +138,13 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, } } - ret = read_offset_data(buf, count, offset, - page, 4096, page_offset * 4096); + copy_len = 4096 - offset_in_page; + if (copy_len > count) + copy_len = count; + + memcpy(buf, page+offset_in_page, copy_len); + ret = copy_len; + e_free: if (hret) pr_err("h_get_24x7_catalog_page(ver=%lld, page=%lld) failed:" @@ -225,9 +152,9 @@ e_free: catalog_version_num, page_offset, hret); kmem_cache_free(hv_page_cache, page); - pr_devel("catalog_read: offset=%lld(%lld) count=%zu(%zu) catalog_len=%zu(%zu) => %zd\n", - offset, page_offset, count, page_count, catalog_len, - catalog_page_len, ret); + pr_devel("catalog_read: offset=%lld(%lld) count=%zu " + "catalog_len=%zu(%zu) => %zd\n", offset, page_offset, + count, catalog_len, catalog_page_len, ret); return ret; } @@ -294,7 +221,7 @@ static unsigned long single_24x7_request(u8 domain, u32 offset, u16 ix, u16 lpar, u64 *res, bool success_expected) { - unsigned long ret; + unsigned long ret = -ENOMEM; /* * request_buffer and result_buffer are not required to be 4k aligned, @@ -304,7 +231,27 @@ static unsigned long single_24x7_request(u8 domain, u32 offset, u16 ix, struct reqb { struct hv_24x7_request_buffer buf; struct hv_24x7_request req; - } __packed __aligned(4096) request_buffer = { + } __packed *request_buffer; + + struct { + struct hv_24x7_data_result_buffer buf; + struct hv_24x7_result res; + struct hv_24x7_result_element elem; + __be64 result; + } __packed *result_buffer; + + BUILD_BUG_ON(sizeof(*request_buffer) > 4096); + BUILD_BUG_ON(sizeof(*result_buffer) > 4096); + + request_buffer = kmem_cache_zalloc(hv_page_cache, GFP_USER); + if (!request_buffer) + goto out; + + result_buffer = kmem_cache_zalloc(hv_page_cache, GFP_USER); + if (!result_buffer) + goto out_free_request_buffer; + + *request_buffer = (struct reqb) { .buf = { .interface_version = HV_24X7_IF_VERSION_CURRENT, .num_requests = 1, @@ -320,28 +267,27 @@ static unsigned long single_24x7_request(u8 domain, u32 offset, u16 ix, } }; - struct resb { - struct hv_24x7_data_result_buffer buf; - struct hv_24x7_result res; - struct hv_24x7_result_element elem; - __be64 result; - } __packed __aligned(4096) result_buffer = {}; - ret = plpar_hcall_norets(H_GET_24X7_DATA, - virt_to_phys(&request_buffer), sizeof(request_buffer), - virt_to_phys(&result_buffer), sizeof(result_buffer)); + virt_to_phys(request_buffer), sizeof(*request_buffer), + virt_to_phys(result_buffer), sizeof(*result_buffer)); if (ret) { if (success_expected) - pr_err_ratelimited("hcall failed: %d %#x %#x %d => 0x%lx (%ld) detail=0x%x failing ix=%x\n", - domain, offset, ix, lpar, - ret, ret, - result_buffer.buf.detailed_rc, - result_buffer.buf.failing_request_ix); - return ret; + pr_err_ratelimited("hcall failed: %d %#x %#x %d => " + "0x%lx (%ld) detail=0x%x failing ix=%x\n", + domain, offset, ix, lpar, ret, ret, + result_buffer->buf.detailed_rc, + result_buffer->buf.failing_request_ix); + goto out_free_result_buffer; } - *res = be64_to_cpu(result_buffer.result); + *res = be64_to_cpu(result_buffer->result); + +out_free_result_buffer: + kfree(result_buffer); +out_free_request_buffer: + kfree(request_buffer); +out: return ret; } diff --git a/arch/powerpc/platforms/40x/ep405.c b/arch/powerpc/platforms/40x/ep405.c index b0389bb..ddc12a1 100644 --- a/arch/powerpc/platforms/40x/ep405.c +++ b/arch/powerpc/platforms/40x/ep405.c @@ -49,7 +49,7 @@ static void __iomem *bcsr_regs; /* there's more, can't be bothered typing them tho */ -static __initdata struct of_device_id ep405_of_bus[] = { +static const struct of_device_id ep405_of_bus[] __initconst = { { .compatible = "ibm,plb3", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/40x/ppc40x_simple.c b/arch/powerpc/platforms/40x/ppc40x_simple.c index 8f3920e..b0c4637 100644 --- a/arch/powerpc/platforms/40x/ppc40x_simple.c +++ b/arch/powerpc/platforms/40x/ppc40x_simple.c @@ -24,7 +24,7 @@ #include <linux/init.h> #include <linux/of_platform.h> -static __initdata struct of_device_id ppc40x_of_bus[] = { +static const struct of_device_id ppc40x_of_bus[] __initconst = { { .compatible = "ibm,plb3", }, { .compatible = "ibm,plb4", }, { .compatible = "ibm,opb", }, diff --git a/arch/powerpc/platforms/40x/virtex.c b/arch/powerpc/platforms/40x/virtex.c index d0fc686..9aa7ae2 100644 --- a/arch/powerpc/platforms/40x/virtex.c +++ b/arch/powerpc/platforms/40x/virtex.c @@ -17,7 +17,7 @@ #include <asm/xilinx_pci.h> #include <asm/ppc4xx.h> -static struct of_device_id xilinx_of_bus_ids[] __initdata = { +static const struct of_device_id xilinx_of_bus_ids[] __initconst = { { .compatible = "xlnx,plb-v46-1.00.a", }, { .compatible = "xlnx,plb-v34-1.01.a", }, { .compatible = "xlnx,plb-v34-1.02.a", }, diff --git a/arch/powerpc/platforms/40x/walnut.c b/arch/powerpc/platforms/40x/walnut.c index 8b691df..f7ac2d0 100644 --- a/arch/powerpc/platforms/40x/walnut.c +++ b/arch/powerpc/platforms/40x/walnut.c @@ -28,7 +28,7 @@ #include <asm/pci-bridge.h> #include <asm/ppc4xx.h> -static __initdata struct of_device_id walnut_of_bus[] = { +static const struct of_device_id walnut_of_bus[] __initconst = { { .compatible = "ibm,plb3", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index 4d88f6a..82f2da2 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -215,9 +215,9 @@ config AKEBONO select NET_VENDOR_IBM select IBM_EMAC_EMAC4 select IBM_EMAC_RGMII_WOL - select USB - select USB_OHCI_HCD_PLATFORM - select USB_EHCI_HCD_PLATFORM + select USB if USB_SUPPORT + select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD + select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD select MMC_SDHCI select MMC_SDHCI_PLTFM select MMC_SDHCI_OF_476GTR diff --git a/arch/powerpc/platforms/44x/canyonlands.c b/arch/powerpc/platforms/44x/canyonlands.c index e300dd4..22ca543 100644 --- a/arch/powerpc/platforms/44x/canyonlands.c +++ b/arch/powerpc/platforms/44x/canyonlands.c @@ -33,7 +33,7 @@ #define BCSR_USB_EN 0x11 -static __initdata struct of_device_id ppc460ex_of_bus[] = { +static const struct of_device_id ppc460ex_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/44x/ebony.c b/arch/powerpc/platforms/44x/ebony.c index 6a4232b..ae89322 100644 --- a/arch/powerpc/platforms/44x/ebony.c +++ b/arch/powerpc/platforms/44x/ebony.c @@ -28,7 +28,7 @@ #include <asm/pci-bridge.h> #include <asm/ppc4xx.h> -static __initdata struct of_device_id ebony_of_bus[] = { +static const struct of_device_id ebony_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/44x/iss4xx.c b/arch/powerpc/platforms/44x/iss4xx.c index 4241bc8..c7c6758 100644 --- a/arch/powerpc/platforms/44x/iss4xx.c +++ b/arch/powerpc/platforms/44x/iss4xx.c @@ -32,7 +32,7 @@ #include <asm/mpic.h> #include <asm/mmu.h> -static __initdata struct of_device_id iss4xx_of_bus[] = { +static const struct of_device_id iss4xx_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,plb6", }, { .compatible = "ibm,opb", }, diff --git a/arch/powerpc/platforms/44x/ppc44x_simple.c b/arch/powerpc/platforms/44x/ppc44x_simple.c index 3ffb915..573c3d2 100644 --- a/arch/powerpc/platforms/44x/ppc44x_simple.c +++ b/arch/powerpc/platforms/44x/ppc44x_simple.c @@ -24,7 +24,7 @@ #include <linux/init.h> #include <linux/of_platform.h> -static __initdata struct of_device_id ppc44x_of_bus[] = { +static const struct of_device_id ppc44x_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/44x/ppc476.c b/arch/powerpc/platforms/44x/ppc476.c index 33986c1..58db9d0 100644 --- a/arch/powerpc/platforms/44x/ppc476.c +++ b/arch/powerpc/platforms/44x/ppc476.c @@ -38,7 +38,7 @@ #include <linux/pci.h> #include <linux/i2c.h> -static struct of_device_id ppc47x_of_bus[] __initdata = { +static const struct of_device_id ppc47x_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,plb6", }, { .compatible = "ibm,opb", }, diff --git a/arch/powerpc/platforms/44x/sam440ep.c b/arch/powerpc/platforms/44x/sam440ep.c index 9e09b83..3ee4a03 100644 --- a/arch/powerpc/platforms/44x/sam440ep.c +++ b/arch/powerpc/platforms/44x/sam440ep.c @@ -29,7 +29,7 @@ #include <asm/ppc4xx.h> #include <linux/i2c.h> -static __initdata struct of_device_id sam440ep_of_bus[] = { +static const struct of_device_id sam440ep_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/44x/virtex.c b/arch/powerpc/platforms/44x/virtex.c index cf96cca..ad272c1 100644 --- a/arch/powerpc/platforms/44x/virtex.c +++ b/arch/powerpc/platforms/44x/virtex.c @@ -21,7 +21,7 @@ #include <asm/ppc4xx.h> #include "44x.h" -static struct of_device_id xilinx_of_bus_ids[] __initdata = { +static const struct of_device_id xilinx_of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "xlnx,plb-v46-1.00.a", }, { .compatible = "xlnx,plb-v46-1.02.a", }, diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c index 3a10428..501333c 100644 --- a/arch/powerpc/platforms/44x/warp.c +++ b/arch/powerpc/platforms/44x/warp.c @@ -28,7 +28,7 @@ #include <asm/dma.h> -static __initdata struct of_device_id warp_of_bus[] = { +static const struct of_device_id warp_of_bus[] __initconst = { { .compatible = "ibm,plb4", }, { .compatible = "ibm,opb", }, { .compatible = "ibm,ebc", }, diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c index adb95f0..e996e00 100644 --- a/arch/powerpc/platforms/512x/mpc512x_shared.c +++ b/arch/powerpc/platforms/512x/mpc512x_shared.c @@ -337,7 +337,7 @@ void __init mpc512x_init_IRQ(void) /* * Nodes to do bus probe on, soc and localbus */ -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "fsl,mpc5121-immr", }, { .compatible = "fsl,mpc5121-localbus", }, { .compatible = "fsl,mpc5121-mbx", }, diff --git a/arch/powerpc/platforms/52xx/lite5200.c b/arch/powerpc/platforms/52xx/lite5200.c index 1843bc9..7492de3 100644 --- a/arch/powerpc/platforms/52xx/lite5200.c +++ b/arch/powerpc/platforms/52xx/lite5200.c @@ -34,13 +34,13 @@ */ /* mpc5200 device tree match tables */ -static struct of_device_id mpc5200_cdm_ids[] __initdata = { +static const struct of_device_id mpc5200_cdm_ids[] __initconst = { { .compatible = "fsl,mpc5200-cdm", }, { .compatible = "mpc5200-cdm", }, {} }; -static struct of_device_id mpc5200_gpio_ids[] __initdata = { +static const struct of_device_id mpc5200_gpio_ids[] __initconst = { { .compatible = "fsl,mpc5200-gpio", }, { .compatible = "mpc5200-gpio", }, {} diff --git a/arch/powerpc/platforms/52xx/media5200.c b/arch/powerpc/platforms/52xx/media5200.c index 070d315..32cae33 100644 --- a/arch/powerpc/platforms/52xx/media5200.c +++ b/arch/powerpc/platforms/52xx/media5200.c @@ -30,7 +30,7 @@ #include <asm/machdep.h> #include <asm/mpc52xx.h> -static struct of_device_id mpc5200_gpio_ids[] __initdata = { +static const struct of_device_id mpc5200_gpio_ids[] __initconst = { { .compatible = "fsl,mpc5200-gpio", }, { .compatible = "mpc5200-gpio", }, {} diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c index d7e94f4..2699382 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_common.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c @@ -23,12 +23,12 @@ #include <asm/mpc52xx.h> /* MPC5200 device tree match tables */ -static struct of_device_id mpc52xx_xlb_ids[] __initdata = { +static const struct of_device_id mpc52xx_xlb_ids[] __initconst = { { .compatible = "fsl,mpc5200-xlb", }, { .compatible = "mpc5200-xlb", }, {} }; -static struct of_device_id mpc52xx_bus_ids[] __initdata = { +static const struct of_device_id mpc52xx_bus_ids[] __initconst = { { .compatible = "fsl,mpc5200-immr", }, { .compatible = "fsl,mpc5200b-immr", }, { .compatible = "simple-bus", }, @@ -108,21 +108,21 @@ void __init mpc52xx_declare_of_platform_devices(void) /* * match tables used by mpc52xx_map_common_devices() */ -static struct of_device_id mpc52xx_gpt_ids[] __initdata = { +static const struct of_device_id mpc52xx_gpt_ids[] __initconst = { { .compatible = "fsl,mpc5200-gpt", }, { .compatible = "mpc5200-gpt", }, /* old */ {} }; -static struct of_device_id mpc52xx_cdm_ids[] __initdata = { +static const struct of_device_id mpc52xx_cdm_ids[] __initconst = { { .compatible = "fsl,mpc5200-cdm", }, { .compatible = "mpc5200-cdm", }, /* old */ {} }; -static const struct of_device_id mpc52xx_gpio_simple[] = { +static const struct of_device_id mpc52xx_gpio_simple[] __initconst = { { .compatible = "fsl,mpc5200-gpio", }, {} }; -static const struct of_device_id mpc52xx_gpio_wkup[] = { +static const struct of_device_id mpc52xx_gpio_wkup[] __initconst = { { .compatible = "fsl,mpc5200-gpio-wkup", }, {} }; diff --git a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c index 37f7a89..f8f0081 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_lpbfifo.c @@ -564,7 +564,7 @@ static int mpc52xx_lpbfifo_remove(struct platform_device *op) return 0; } -static struct of_device_id mpc52xx_lpbfifo_match[] = { +static const struct of_device_id mpc52xx_lpbfifo_match[] = { { .compatible = "fsl,mpc5200-lpbfifo", }, {}, }; diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c index 2898b73..2944bc8 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c @@ -119,12 +119,12 @@ /* MPC5200 device tree match tables */ -static struct of_device_id mpc52xx_pic_ids[] __initdata = { +static const struct of_device_id mpc52xx_pic_ids[] __initconst = { { .compatible = "fsl,mpc5200-pic", }, { .compatible = "mpc5200-pic", }, {} }; -static struct of_device_id mpc52xx_sdma_ids[] __initdata = { +static const struct of_device_id mpc52xx_sdma_ids[] __initconst = { { .compatible = "fsl,mpc5200-bestcomm", }, { .compatible = "mpc5200-bestcomm", }, {} diff --git a/arch/powerpc/platforms/82xx/ep8248e.c b/arch/powerpc/platforms/82xx/ep8248e.c index 79799b2..3d0c3a0 100644 --- a/arch/powerpc/platforms/82xx/ep8248e.c +++ b/arch/powerpc/platforms/82xx/ep8248e.c @@ -298,7 +298,7 @@ static void __init ep8248e_setup_arch(void) ppc_md.progress("ep8248e_setup_arch(), finish", 0); } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "fsl,ep8248e-bcsr", }, {}, diff --git a/arch/powerpc/platforms/82xx/km82xx.c b/arch/powerpc/platforms/82xx/km82xx.c index 058cc18..387b446 100644 --- a/arch/powerpc/platforms/82xx/km82xx.c +++ b/arch/powerpc/platforms/82xx/km82xx.c @@ -180,7 +180,7 @@ static void __init km82xx_setup_arch(void) ppc_md.progress("km82xx_setup_arch(), finish", 0); } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, {}, }; diff --git a/arch/powerpc/platforms/82xx/mpc8272_ads.c b/arch/powerpc/platforms/82xx/mpc8272_ads.c index 6a14cf5..d24deac 100644 --- a/arch/powerpc/platforms/82xx/mpc8272_ads.c +++ b/arch/powerpc/platforms/82xx/mpc8272_ads.c @@ -181,7 +181,7 @@ static void __init mpc8272_ads_setup_arch(void) ppc_md.progress("mpc8272_ads_setup_arch(), finish", 0); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, diff --git a/arch/powerpc/platforms/82xx/pq2fads.c b/arch/powerpc/platforms/82xx/pq2fads.c index e5f82ec..3a5164a 100644 --- a/arch/powerpc/platforms/82xx/pq2fads.c +++ b/arch/powerpc/platforms/82xx/pq2fads.c @@ -168,7 +168,7 @@ static int __init pq2fads_probe(void) return of_flat_dt_is_compatible(root, "fsl,pq2fads"); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, diff --git a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c index 7399702..463fa91e 100644 --- a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c +++ b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c @@ -214,7 +214,7 @@ static const struct i2c_device_id mcu_ids[] = { }; MODULE_DEVICE_TABLE(i2c, mcu_ids); -static struct of_device_id mcu_of_match_table[] = { +static const struct of_device_id mcu_of_match_table[] = { { .compatible = "fsl,mcu-mpc8349emitx", }, { }, }; diff --git a/arch/powerpc/platforms/83xx/misc.c b/arch/powerpc/platforms/83xx/misc.c index 125336f..ef9d01a 100644 --- a/arch/powerpc/platforms/83xx/misc.c +++ b/arch/powerpc/platforms/83xx/misc.c @@ -114,7 +114,7 @@ void __init mpc83xx_ipic_and_qe_init_IRQ(void) } #endif /* CONFIG_QUICC_ENGINE */ -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus" }, diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c index a494fa5..80aea8c 100644 --- a/arch/powerpc/platforms/83xx/mpc834x_itx.c +++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c @@ -38,7 +38,7 @@ #include "mpc83xx.h" -static struct of_device_id __initdata mpc834x_itx_ids[] = { +static const struct of_device_id mpc834x_itx_ids[] __initconst = { { .compatible = "fsl,pq2pro-localbus", }, {}, }; diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c index 4b4c081..eeb80e2 100644 --- a/arch/powerpc/platforms/83xx/suspend.c +++ b/arch/powerpc/platforms/83xx/suspend.c @@ -321,7 +321,7 @@ static const struct platform_suspend_ops mpc83xx_suspend_ops = { .end = mpc83xx_suspend_end, }; -static struct of_device_id pmc_match[]; +static const struct of_device_id pmc_match[]; static int pmc_probe(struct platform_device *ofdev) { const struct of_device_id *match; @@ -420,7 +420,7 @@ static struct pmc_type pmc_types[] = { } }; -static struct of_device_id pmc_match[] = { +static const struct of_device_id pmc_match[] = { { .compatible = "fsl,mpc8313-pmc", .data = &pmc_types[0], diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 0c1e690..f22635a 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -276,7 +276,7 @@ config CORENET_GENERIC For 64bit kernel, the following boards are supported: T208x QDS/RDB, T4240 QDS/RDB and B4 QDS The following boards are supported for both 32bit and 64bit kernel: - P5020 DS, P5040 DS and T104xQDS + P5020 DS, P5040 DS and T104xQDS/RDB endif # FSL_SOC_BOOKE diff --git a/arch/powerpc/platforms/85xx/common.c b/arch/powerpc/platforms/85xx/common.c index b564b5e..4a9ad87 100644 --- a/arch/powerpc/platforms/85xx/common.c +++ b/arch/powerpc/platforms/85xx/common.c @@ -14,7 +14,7 @@ #include "mpc85xx.h" -static struct of_device_id __initdata mpc85xx_common_ids[] = { +static const struct of_device_id mpc85xx_common_ids[] __initconst = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c index d22dd85..e56b89a 100644 --- a/arch/powerpc/platforms/85xx/corenet_generic.c +++ b/arch/powerpc/platforms/85xx/corenet_generic.c @@ -20,6 +20,7 @@ #include <asm/time.h> #include <asm/machdep.h> #include <asm/pci-bridge.h> +#include <asm/pgtable.h> #include <asm/ppc-pci.h> #include <mm/mmu_decl.h> #include <asm/prom.h> @@ -67,6 +68,16 @@ void __init corenet_gen_setup_arch(void) swiotlb_detect_4g(); +#if defined(CONFIG_FSL_PCI) && defined(CONFIG_ZONE_DMA32) + /* + * Inbound windows don't cover the full lower 4 GiB + * due to conflicts with PCICSRBAR and outbound windows, + * so limit the DMA32 zone to 2 GiB, to allow consistent + * allocations to succeed. + */ + limit_zone_pfn(ZONE_DMA32, 1UL << (31 - PAGE_SHIFT)); +#endif + pr_info("%s board\n", ppc_md.name); mpc85xx_qe_init(); @@ -129,6 +140,9 @@ static const char * const boards[] __initconst = { "fsl,B4220QDS", "fsl,T1040QDS", "fsl,T1042QDS", + "fsl,T1040RDB", + "fsl,T1042RDB", + "fsl,T1042RDB_PI", "keymile,kmcoge4", NULL }; diff --git a/arch/powerpc/platforms/85xx/ppa8548.c b/arch/powerpc/platforms/85xx/ppa8548.c index 3daff7c..12019f1 100644 --- a/arch/powerpc/platforms/85xx/ppa8548.c +++ b/arch/powerpc/platforms/85xx/ppa8548.c @@ -59,7 +59,7 @@ static void ppa8548_show_cpuinfo(struct seq_file *m) seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .type = "soc", }, { .compatible = "simple-bus", }, diff --git a/arch/powerpc/platforms/85xx/qemu_e500.c b/arch/powerpc/platforms/85xx/qemu_e500.c index 7f26732..8ad2fe6 100644 --- a/arch/powerpc/platforms/85xx/qemu_e500.c +++ b/arch/powerpc/platforms/85xx/qemu_e500.c @@ -18,6 +18,7 @@ #include <linux/kernel.h> #include <linux/of_fdt.h> #include <asm/machdep.h> +#include <asm/pgtable.h> #include <asm/time.h> #include <asm/udbg.h> #include <asm/mpic.h> @@ -44,6 +45,15 @@ static void __init qemu_e500_setup_arch(void) fsl_pci_assign_primary(); swiotlb_detect_4g(); +#if defined(CONFIG_FSL_PCI) && defined(CONFIG_ZONE_DMA32) + /* + * Inbound windows don't cover the full lower 4 GiB + * due to conflicts with PCICSRBAR and outbound windows, + * so limit the DMA32 zone to 2 GiB, to allow consistent + * allocations to succeed. + */ + limit_zone_pfn(ZONE_DMA32, 1UL << (31 - PAGE_SHIFT)); +#endif mpc85xx_smp_init(); } diff --git a/arch/powerpc/platforms/85xx/sgy_cts1000.c b/arch/powerpc/platforms/85xx/sgy_cts1000.c index bb75add..8162b04 100644 --- a/arch/powerpc/platforms/85xx/sgy_cts1000.c +++ b/arch/powerpc/platforms/85xx/sgy_cts1000.c @@ -24,7 +24,7 @@ static struct device_node *halt_node; -static struct of_device_id child_match[] = { +static const struct of_device_id child_match[] = { { .compatible = "sgy,gpio-halt", }, @@ -147,7 +147,7 @@ static int gpio_halt_remove(struct platform_device *pdev) return 0; } -static struct of_device_id gpio_halt_match[] = { +static const struct of_device_id gpio_halt_match[] = { /* We match on the gpio bus itself and scan the children since they * wont be matched against us. We know the bus wont match until it * has been registered too. */ diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c b/arch/powerpc/platforms/86xx/gef_ppc9a.c index c23f3443..bf17933 100644 --- a/arch/powerpc/platforms/86xx/gef_ppc9a.c +++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c @@ -213,7 +213,7 @@ static long __init mpc86xx_time_init(void) return 0; } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "gianfar", }, { .compatible = "fsl,mpc8641-pcie", }, diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c index 8a6ac20..8facf58 100644 --- a/arch/powerpc/platforms/86xx/gef_sbc310.c +++ b/arch/powerpc/platforms/86xx/gef_sbc310.c @@ -200,7 +200,7 @@ static long __init mpc86xx_time_init(void) return 0; } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "gianfar", }, { .compatible = "fsl,mpc8641-pcie", }, diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c b/arch/powerpc/platforms/86xx/gef_sbc610.c index 06c7263..8c9058d 100644 --- a/arch/powerpc/platforms/86xx/gef_sbc610.c +++ b/arch/powerpc/platforms/86xx/gef_sbc610.c @@ -190,7 +190,7 @@ static long __init mpc86xx_time_init(void) return 0; } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "gianfar", }, { .compatible = "fsl,mpc8641-pcie", }, diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c index d479d68..55413a5 100644 --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c @@ -85,7 +85,7 @@ static void __init mpc8610_suspend_init(void) static inline void mpc8610_suspend_init(void) { } #endif /* CONFIG_SUSPEND */ -static struct of_device_id __initdata mpc8610_ids[] = { +static const struct of_device_id mpc8610_ids[] __initconst = { { .compatible = "fsl,mpc8610-immr", }, { .compatible = "fsl,mpc8610-guts", }, { .compatible = "simple-bus", }, diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c index e8bf3fa..07ccb1b 100644 --- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c +++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c @@ -127,7 +127,7 @@ mpc86xx_time_init(void) return 0; } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "fsl,srio", }, { .compatible = "gianfar", }, diff --git a/arch/powerpc/platforms/86xx/sbc8641d.c b/arch/powerpc/platforms/86xx/sbc8641d.c index b47a8fd..6810b71 100644 --- a/arch/powerpc/platforms/86xx/sbc8641d.c +++ b/arch/powerpc/platforms/86xx/sbc8641d.c @@ -92,7 +92,7 @@ mpc86xx_time_init(void) return 0; } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, { .compatible = "gianfar", }, { .compatible = "fsl,mpc8641-pcie", }, diff --git a/arch/powerpc/platforms/8xx/adder875.c b/arch/powerpc/platforms/8xx/adder875.c index 82363e9..61cae4c 100644 --- a/arch/powerpc/platforms/8xx/adder875.c +++ b/arch/powerpc/platforms/8xx/adder875.c @@ -92,7 +92,7 @@ static int __init adder875_probe(void) return of_flat_dt_is_compatible(root, "analogue-and-micro,adder875"); } -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .compatible = "simple-bus", }, {}, }; diff --git a/arch/powerpc/platforms/8xx/ep88xc.c b/arch/powerpc/platforms/8xx/ep88xc.c index e621666..2bedeb7 100644 --- a/arch/powerpc/platforms/8xx/ep88xc.c +++ b/arch/powerpc/platforms/8xx/ep88xc.c @@ -147,7 +147,7 @@ static int __init ep88xc_probe(void) return of_flat_dt_is_compatible(root, "fsl,ep88xc"); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, diff --git a/arch/powerpc/platforms/8xx/mpc86xads_setup.c b/arch/powerpc/platforms/8xx/mpc86xads_setup.c index 6308464..78180c5 100644 --- a/arch/powerpc/platforms/8xx/mpc86xads_setup.c +++ b/arch/powerpc/platforms/8xx/mpc86xads_setup.c @@ -122,7 +122,7 @@ static int __init mpc86xads_probe(void) return of_flat_dt_is_compatible(root, "fsl,mpc866ads"); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, diff --git a/arch/powerpc/platforms/8xx/mpc885ads_setup.c b/arch/powerpc/platforms/8xx/mpc885ads_setup.c index 5921dcb..4d62bf9 100644 --- a/arch/powerpc/platforms/8xx/mpc885ads_setup.c +++ b/arch/powerpc/platforms/8xx/mpc885ads_setup.c @@ -197,7 +197,7 @@ static int __init mpc885ads_probe(void) return of_flat_dt_is_compatible(root, "fsl,mpc885ads"); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, diff --git a/arch/powerpc/platforms/8xx/tqm8xx_setup.c b/arch/powerpc/platforms/8xx/tqm8xx_setup.c index dda6078..bee47a2 100644 --- a/arch/powerpc/platforms/8xx/tqm8xx_setup.c +++ b/arch/powerpc/platforms/8xx/tqm8xx_setup.c @@ -124,7 +124,7 @@ static int __init tqm8xx_probe(void) return of_flat_dt_is_compatible(node, "tqc,tqm8xx"); } -static struct of_device_id __initdata of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .name = "soc", }, { .name = "cpm", }, { .name = "localbus", }, diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 7d9ee3d..76483e3 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -116,6 +116,12 @@ config POWER6_CPU config POWER7_CPU bool "POWER7" depends on PPC_BOOK3S_64 + select ARCH_HAS_FAST_MULTIPLIER + +config POWER8_CPU + bool "POWER8" + depends on PPC_BOOK3S_64 + select ARCH_HAS_FAST_MULTIPLIER config E5500_CPU bool "Freescale e5500" diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index 9978f59..870b6db 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -86,6 +86,7 @@ config SPU_FS_64K_LS config SPU_BASE bool default n + select PPC_COPRO_BASE config CBE_RAS bool "RAS features for bare metal Cell BE" diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile index fe053e7..2d16884 100644 --- a/arch/powerpc/platforms/cell/Makefile +++ b/arch/powerpc/platforms/cell/Makefile @@ -20,7 +20,7 @@ spu-manage-$(CONFIG_PPC_CELL_COMMON) += spu_manage.o obj-$(CONFIG_SPU_BASE) += spu_callbacks.o spu_base.o \ spu_notify.o \ - spu_syscalls.o spu_fault.o \ + spu_syscalls.o \ $(spu-priv1-y) \ $(spu-manage-y) \ spufs/ diff --git a/arch/powerpc/platforms/cell/celleb_pci.c b/arch/powerpc/platforms/cell/celleb_pci.c index 1735681..2b98a36 100644 --- a/arch/powerpc/platforms/cell/celleb_pci.c +++ b/arch/powerpc/platforms/cell/celleb_pci.c @@ -454,7 +454,7 @@ static struct celleb_phb_spec celleb_fake_pci_spec __initdata = { .setup = celleb_setup_fake_pci, }; -static struct of_device_id celleb_phb_match[] __initdata = { +static const struct of_device_id celleb_phb_match[] __initconst = { { .name = "pci-pseudo", .data = &celleb_fake_pci_spec, diff --git a/arch/powerpc/platforms/cell/celleb_setup.c b/arch/powerpc/platforms/cell/celleb_setup.c index 1d5a4d8..34e8ce2 100644 --- a/arch/powerpc/platforms/cell/celleb_setup.c +++ b/arch/powerpc/platforms/cell/celleb_setup.c @@ -102,7 +102,7 @@ static void __init celleb_setup_arch_common(void) #endif } -static struct of_device_id celleb_bus_ids[] __initdata = { +static const struct of_device_id celleb_bus_ids[] __initconst = { { .type = "scc", }, { .type = "ioif", }, /* old style */ {}, diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index 2930d1e..ffcbd24 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -76,10 +76,6 @@ static LIST_HEAD(spu_full_list); static DEFINE_SPINLOCK(spu_full_list_lock); static DEFINE_MUTEX(spu_full_list_mutex); -struct spu_slb { - u64 esid, vsid; -}; - void spu_invalidate_slbs(struct spu *spu) { struct spu_priv2 __iomem *priv2 = spu->priv2; @@ -149,7 +145,7 @@ static void spu_restart_dma(struct spu *spu) } } -static inline void spu_load_slb(struct spu *spu, int slbe, struct spu_slb *slb) +static inline void spu_load_slb(struct spu *spu, int slbe, struct copro_slb *slb) { struct spu_priv2 __iomem *priv2 = spu->priv2; @@ -167,45 +163,12 @@ static inline void spu_load_slb(struct spu *spu, int slbe, struct spu_slb *slb) static int __spu_trap_data_seg(struct spu *spu, unsigned long ea) { - struct mm_struct *mm = spu->mm; - struct spu_slb slb; - int psize; - - pr_debug("%s\n", __func__); - - slb.esid = (ea & ESID_MASK) | SLB_ESID_V; + struct copro_slb slb; + int ret; - switch(REGION_ID(ea)) { - case USER_REGION_ID: -#ifdef CONFIG_PPC_MM_SLICES - psize = get_slice_psize(mm, ea); -#else - psize = mm->context.user_psize; -#endif - slb.vsid = (get_vsid(mm->context.id, ea, MMU_SEGSIZE_256M) - << SLB_VSID_SHIFT) | SLB_VSID_USER; - break; - case VMALLOC_REGION_ID: - if (ea < VMALLOC_END) - psize = mmu_vmalloc_psize; - else - psize = mmu_io_psize; - slb.vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) - << SLB_VSID_SHIFT) | SLB_VSID_KERNEL; - break; - case KERNEL_REGION_ID: - psize = mmu_linear_psize; - slb.vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) - << SLB_VSID_SHIFT) | SLB_VSID_KERNEL; - break; - default: - /* Future: support kernel segments so that drivers - * can use SPUs. - */ - pr_debug("invalid region access at %016lx\n", ea); - return 1; - } - slb.vsid |= mmu_psize_defs[psize].sllp; + ret = copro_calculate_slb(spu->mm, ea, &slb); + if (ret) + return ret; spu_load_slb(spu, spu->slb_replace, &slb); @@ -253,7 +216,7 @@ static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr) return 0; } -static void __spu_kernel_slb(void *addr, struct spu_slb *slb) +static void __spu_kernel_slb(void *addr, struct copro_slb *slb) { unsigned long ea = (unsigned long)addr; u64 llp; @@ -272,7 +235,7 @@ static void __spu_kernel_slb(void *addr, struct spu_slb *slb) * Given an array of @nr_slbs SLB entries, @slbs, return non-zero if the * address @new_addr is present. */ -static inline int __slb_present(struct spu_slb *slbs, int nr_slbs, +static inline int __slb_present(struct copro_slb *slbs, int nr_slbs, void *new_addr) { unsigned long ea = (unsigned long)new_addr; @@ -297,7 +260,7 @@ static inline int __slb_present(struct spu_slb *slbs, int nr_slbs, void spu_setup_kernel_slbs(struct spu *spu, struct spu_lscsa *lscsa, void *code, int code_size) { - struct spu_slb slbs[4]; + struct copro_slb slbs[4]; int i, nr_slbs = 0; /* start and end addresses of both mappings */ void *addrs[] = { diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c index 8cb6260..e45894a 100644 --- a/arch/powerpc/platforms/cell/spufs/fault.c +++ b/arch/powerpc/platforms/cell/spufs/fault.c @@ -138,7 +138,7 @@ int spufs_handle_class1(struct spu_context *ctx) if (ctx->state == SPU_STATE_RUNNABLE) ctx->spu->stats.hash_flt++; - /* we must not hold the lock when entering spu_handle_mm_fault */ + /* we must not hold the lock when entering copro_handle_mm_fault */ spu_release(ctx); access = (_PAGE_PRESENT | _PAGE_USER); @@ -149,7 +149,7 @@ int spufs_handle_class1(struct spu_context *ctx) /* hashing failed, so try the actual fault handler */ if (ret) - ret = spu_handle_mm_fault(current->mm, ea, dsisr, &flt); + ret = copro_handle_mm_fault(current->mm, ea, dsisr, &flt); /* * This is nasty: we need the state_mutex for all the bookkeeping even diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index 7044fd3..5b77b19 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -258,7 +258,7 @@ static void chrp_init_early(void) struct device_node *node; const char *property; - if (strstr(cmd_line, "console=")) + if (strstr(boot_command_line, "console=")) return; /* find the boot console from /chosen/stdout */ if (!of_chosen) diff --git a/arch/powerpc/platforms/embedded6xx/gamecube.c b/arch/powerpc/platforms/embedded6xx/gamecube.c index a138e14..bd4ba5d 100644 --- a/arch/powerpc/platforms/embedded6xx/gamecube.c +++ b/arch/powerpc/platforms/embedded6xx/gamecube.c @@ -90,7 +90,7 @@ define_machine(gamecube) { }; -static struct of_device_id gamecube_of_bus[] = { +static const struct of_device_id gamecube_of_bus[] = { { .compatible = "nintendo,flipper", }, { }, }; diff --git a/arch/powerpc/platforms/embedded6xx/linkstation.c b/arch/powerpc/platforms/embedded6xx/linkstation.c index 455e7c08..168e1d8 100644 --- a/arch/powerpc/platforms/embedded6xx/linkstation.c +++ b/arch/powerpc/platforms/embedded6xx/linkstation.c @@ -21,7 +21,7 @@ #include "mpc10x.h" -static __initdata struct of_device_id of_bus_ids[] = { +static const struct of_device_id of_bus_ids[] __initconst = { { .type = "soc", }, { .compatible = "simple-bus", }, {}, diff --git a/arch/powerpc/platforms/embedded6xx/mvme5100.c b/arch/powerpc/platforms/embedded6xx/mvme5100.c index 25e3bfb..1613303 100644 --- a/arch/powerpc/platforms/embedded6xx/mvme5100.c +++ b/arch/powerpc/platforms/embedded6xx/mvme5100.c @@ -149,7 +149,7 @@ static int __init mvme5100_add_bridge(struct device_node *dev) return 0; } -static struct of_device_id mvme5100_of_bus_ids[] __initdata = { +static const struct of_device_id mvme5100_of_bus_ids[] __initconst = { { .compatible = "hawk-bridge", }, {}, }; diff --git a/arch/powerpc/platforms/embedded6xx/storcenter.c b/arch/powerpc/platforms/embedded6xx/storcenter.c index c458b60..d572833 100644 --- a/arch/powerpc/platforms/embedded6xx/storcenter.c +++ b/arch/powerpc/platforms/embedded6xx/storcenter.c @@ -24,7 +24,7 @@ #include "mpc10x.h" -static __initdata struct of_device_id storcenter_of_bus[] = { +static const struct of_device_id storcenter_of_bus[] __initconst = { { .name = "soc", }, {}, }; diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c index 6d8dadf..388e29b 100644 --- a/arch/powerpc/platforms/embedded6xx/wii.c +++ b/arch/powerpc/platforms/embedded6xx/wii.c @@ -235,7 +235,7 @@ define_machine(wii) { .machine_shutdown = wii_shutdown, }; -static struct of_device_id wii_of_bus[] = { +static const struct of_device_id wii_of_bus[] = { { .compatible = "nintendo,hollywood", }, { }, }; diff --git a/arch/powerpc/platforms/pasemi/gpio_mdio.c b/arch/powerpc/platforms/pasemi/gpio_mdio.c index 15adee5..ada3335 100644 --- a/arch/powerpc/platforms/pasemi/gpio_mdio.c +++ b/arch/powerpc/platforms/pasemi/gpio_mdio.c @@ -290,7 +290,7 @@ static int gpio_mdio_remove(struct platform_device *dev) return 0; } -static struct of_device_id gpio_mdio_match[] = +static const struct of_device_id gpio_mdio_match[] = { { .compatible = "gpio-mdio", diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c index 8c54de6d..d71b2c7 100644 --- a/arch/powerpc/platforms/pasemi/setup.c +++ b/arch/powerpc/platforms/pasemi/setup.c @@ -393,7 +393,7 @@ static inline void pasemi_pcmcia_init(void) #endif -static struct of_device_id pasemi_bus_ids[] = { +static const struct of_device_id pasemi_bus_ids[] = { /* Unfortunately needed for legacy firmwares */ { .type = "localbus", }, { .type = "sdc", }, diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index 141f8899..b127a29 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -336,7 +336,7 @@ static void __init pmac_setup_arch(void) #endif #ifdef CONFIG_ADB - if (strstr(cmd_line, "adb_sync")) { + if (strstr(boot_command_line, "adb_sync")) { extern int __adb_probe_sync; __adb_probe_sync = 1; } @@ -460,7 +460,7 @@ pmac_halt(void) static void __init pmac_init_early(void) { /* Enable early btext debug if requested */ - if (strstr(cmd_line, "btextdbg")) { + if (strstr(boot_command_line, "btextdbg")) { udbg_adb_init_early(); register_early_udbg_console(); } @@ -469,8 +469,8 @@ static void __init pmac_init_early(void) pmac_feature_init(); /* Initialize debug stuff */ - udbg_scc_init(!!strstr(cmd_line, "sccdbg")); - udbg_adb_init(!!strstr(cmd_line, "btextdbg")); + udbg_scc_init(!!strstr(boot_command_line, "sccdbg")); + udbg_adb_init(!!strstr(boot_command_line, "btextdbg")); #ifdef CONFIG_PPC64 iommu_init_early_dart(); diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c index c945bed..426814a 100644 --- a/arch/powerpc/platforms/powernv/eeh-ioda.c +++ b/arch/powerpc/platforms/powernv/eeh-ioda.c @@ -66,6 +66,54 @@ static struct notifier_block ioda_eeh_nb = { }; #ifdef CONFIG_DEBUG_FS +static ssize_t ioda_eeh_ei_write(struct file *filp, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct pci_controller *hose = filp->private_data; + struct pnv_phb *phb = hose->private_data; + struct eeh_dev *edev; + struct eeh_pe *pe; + int pe_no, type, func; + unsigned long addr, mask; + char buf[50]; + int ret; + + if (!phb->eeh_ops || !phb->eeh_ops->err_inject) + return -ENXIO; + + ret = simple_write_to_buffer(buf, sizeof(buf), ppos, user_buf, count); + if (!ret) + return -EFAULT; + + /* Retrieve parameters */ + ret = sscanf(buf, "%x:%x:%x:%lx:%lx", + &pe_no, &type, &func, &addr, &mask); + if (ret != 5) + return -EINVAL; + + /* Retrieve PE */ + edev = kzalloc(sizeof(*edev), GFP_KERNEL); + if (!edev) + return -ENOMEM; + edev->phb = hose; + edev->pe_config_addr = pe_no; + pe = eeh_pe_get(edev); + kfree(edev); + if (!pe) + return -ENODEV; + + /* Do error injection */ + ret = phb->eeh_ops->err_inject(pe, type, func, addr, mask); + return ret < 0 ? ret : count; +} + +static const struct file_operations ioda_eeh_ei_fops = { + .open = simple_open, + .llseek = no_llseek, + .write = ioda_eeh_ei_write, +}; + static int ioda_eeh_dbgfs_set(void *data, int offset, u64 val) { struct pci_controller *hose = data; @@ -152,6 +200,10 @@ static int ioda_eeh_post_init(struct pci_controller *hose) if (!phb->has_dbgfs && phb->dbgfs) { phb->has_dbgfs = 1; + debugfs_create_file("err_injct", 0200, + phb->dbgfs, hose, + &ioda_eeh_ei_fops); + debugfs_create_file("err_injct_outbound", 0600, phb->dbgfs, hose, &ioda_eeh_outb_dbgfs_ops); @@ -189,6 +241,7 @@ static int ioda_eeh_set_option(struct eeh_pe *pe, int option) { struct pci_controller *hose = pe->phb; struct pnv_phb *phb = hose->private_data; + bool freeze_pe = false; int enable, ret = 0; s64 rc; @@ -212,6 +265,10 @@ static int ioda_eeh_set_option(struct eeh_pe *pe, int option) case EEH_OPT_THAW_DMA: enable = OPAL_EEH_ACTION_CLEAR_FREEZE_DMA; break; + case EEH_OPT_FREEZE_PE: + freeze_pe = true; + enable = OPAL_EEH_ACTION_SET_FREEZE_ALL; + break; default: pr_warn("%s: Invalid option %d\n", __func__, option); @@ -219,17 +276,35 @@ static int ioda_eeh_set_option(struct eeh_pe *pe, int option) } /* If PHB supports compound PE, to handle it */ - if (phb->unfreeze_pe) { - ret = phb->unfreeze_pe(phb, pe->addr, enable); + if (freeze_pe) { + if (phb->freeze_pe) { + phb->freeze_pe(phb, pe->addr); + } else { + rc = opal_pci_eeh_freeze_set(phb->opal_id, + pe->addr, + enable); + if (rc != OPAL_SUCCESS) { + pr_warn("%s: Failure %lld freezing " + "PHB#%x-PE#%x\n", + __func__, rc, + phb->hose->global_number, pe->addr); + ret = -EIO; + } + } } else { - rc = opal_pci_eeh_freeze_clear(phb->opal_id, - pe->addr, - enable); - if (rc != OPAL_SUCCESS) { - pr_warn("%s: Failure %lld enable %d for PHB#%x-PE#%x\n", - __func__, rc, option, phb->hose->global_number, - pe->addr); - ret = -EIO; + if (phb->unfreeze_pe) { + ret = phb->unfreeze_pe(phb, pe->addr, enable); + } else { + rc = opal_pci_eeh_freeze_clear(phb->opal_id, + pe->addr, + enable); + if (rc != OPAL_SUCCESS) { + pr_warn("%s: Failure %lld enable %d " + "for PHB#%x-PE#%x\n", + __func__, rc, option, + phb->hose->global_number, pe->addr); + ret = -EIO; + } } } @@ -439,11 +514,11 @@ int ioda_eeh_phb_reset(struct pci_controller *hose, int option) if (option == EEH_RESET_FUNDAMENTAL || option == EEH_RESET_HOT) rc = opal_pci_reset(phb->opal_id, - OPAL_PHB_COMPLETE, + OPAL_RESET_PHB_COMPLETE, OPAL_ASSERT_RESET); else if (option == EEH_RESET_DEACTIVATE) rc = opal_pci_reset(phb->opal_id, - OPAL_PHB_COMPLETE, + OPAL_RESET_PHB_COMPLETE, OPAL_DEASSERT_RESET); if (rc < 0) goto out; @@ -483,15 +558,15 @@ static int ioda_eeh_root_reset(struct pci_controller *hose, int option) */ if (option == EEH_RESET_FUNDAMENTAL) rc = opal_pci_reset(phb->opal_id, - OPAL_PCI_FUNDAMENTAL_RESET, + OPAL_RESET_PCI_FUNDAMENTAL, OPAL_ASSERT_RESET); else if (option == EEH_RESET_HOT) rc = opal_pci_reset(phb->opal_id, - OPAL_PCI_HOT_RESET, + OPAL_RESET_PCI_HOT, OPAL_ASSERT_RESET); else if (option == EEH_RESET_DEACTIVATE) rc = opal_pci_reset(phb->opal_id, - OPAL_PCI_HOT_RESET, + OPAL_RESET_PCI_HOT, OPAL_DEASSERT_RESET); if (rc < 0) goto out; @@ -607,6 +682,31 @@ static int ioda_eeh_reset(struct eeh_pe *pe, int option) if (pe->type & EEH_PE_PHB) { ret = ioda_eeh_phb_reset(hose, option); } else { + struct pnv_phb *phb; + s64 rc; + + /* + * The frozen PE might be caused by PAPR error injection + * registers, which are expected to be cleared after hitting + * frozen PE as stated in the hardware spec. Unfortunately, + * that's not true on P7IOC. So we have to clear it manually + * to avoid recursive EEH errors during recovery. + */ + phb = hose->private_data; + if (phb->model == PNV_PHB_MODEL_P7IOC && + (option == EEH_RESET_HOT || + option == EEH_RESET_FUNDAMENTAL)) { + rc = opal_pci_reset(phb->opal_id, + OPAL_RESET_PHB_ERROR, + OPAL_ASSERT_RESET); + if (rc != OPAL_SUCCESS) { + pr_warn("%s: Failure %lld clearing " + "error injection registers\n", + __func__, rc); + return -EIO; + } + } + bus = eeh_pe_bus_get(pe); if (pci_is_root_bus(bus) || pci_is_root_bus(bus->parent)) @@ -628,8 +728,8 @@ static int ioda_eeh_reset(struct eeh_pe *pe, int option) * Retrieve error log, which contains log from device driver * and firmware. */ -int ioda_eeh_get_log(struct eeh_pe *pe, int severity, - char *drv_log, unsigned long len) +static int ioda_eeh_get_log(struct eeh_pe *pe, int severity, + char *drv_log, unsigned long len) { pnv_pci_dump_phb_diag_data(pe->phb, pe->data); @@ -650,6 +750,49 @@ static int ioda_eeh_configure_bridge(struct eeh_pe *pe) return 0; } +static int ioda_eeh_err_inject(struct eeh_pe *pe, int type, int func, + unsigned long addr, unsigned long mask) +{ + struct pci_controller *hose = pe->phb; + struct pnv_phb *phb = hose->private_data; + s64 ret; + + /* Sanity check on error type */ + if (type != OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR && + type != OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64) { + pr_warn("%s: Invalid error type %d\n", + __func__, type); + return -ERANGE; + } + + if (func < OPAL_ERR_INJECT_FUNC_IOA_LD_MEM_ADDR || + func > OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_TARGET) { + pr_warn("%s: Invalid error function %d\n", + __func__, func); + return -ERANGE; + } + + /* Firmware supports error injection ? */ + if (!opal_check_token(OPAL_PCI_ERR_INJECT)) { + pr_warn("%s: Firmware doesn't support error injection\n", + __func__); + return -ENXIO; + } + + /* Do error injection */ + ret = opal_pci_err_inject(phb->opal_id, pe->addr, + type, func, addr, mask); + if (ret != OPAL_SUCCESS) { + pr_warn("%s: Failure %lld injecting error " + "%d-%d to PHB#%x-PE#%x\n", + __func__, ret, type, func, + hose->global_number, pe->addr); + return -EIO; + } + + return 0; +} + static void ioda_eeh_hub_diag_common(struct OpalIoP7IOCErrorData *data) { /* GEM */ @@ -743,14 +886,12 @@ static int ioda_eeh_get_pe(struct pci_controller *hose, * the master PE because slave PE is invisible * to EEH core. */ - if (phb->get_pe_state) { - pnv_pe = &phb->ioda.pe_array[pe_no]; - if (pnv_pe->flags & PNV_IODA_PE_SLAVE) { - pnv_pe = pnv_pe->master; - WARN_ON(!pnv_pe || - !(pnv_pe->flags & PNV_IODA_PE_MASTER)); - pe_no = pnv_pe->pe_number; - } + pnv_pe = &phb->ioda.pe_array[pe_no]; + if (pnv_pe->flags & PNV_IODA_PE_SLAVE) { + pnv_pe = pnv_pe->master; + WARN_ON(!pnv_pe || + !(pnv_pe->flags & PNV_IODA_PE_MASTER)); + pe_no = pnv_pe->pe_number; } /* Find the PE according to PE# */ @@ -761,15 +902,37 @@ static int ioda_eeh_get_pe(struct pci_controller *hose, if (!dev_pe) return -EEXIST; - /* - * At this point, we're sure the compound PE should - * be put into frozen state. - */ + /* Freeze the (compound) PE */ *pe = dev_pe; - if (phb->freeze_pe && - !(dev_pe->state & EEH_PE_ISOLATED)) + if (!(dev_pe->state & EEH_PE_ISOLATED)) phb->freeze_pe(phb, pe_no); + /* + * At this point, we're sure the (compound) PE should + * have been frozen. However, we still need poke until + * hitting the frozen PE on top level. + */ + dev_pe = dev_pe->parent; + while (dev_pe && !(dev_pe->type & EEH_PE_PHB)) { + int ret; + int active_flags = (EEH_STATE_MMIO_ACTIVE | + EEH_STATE_DMA_ACTIVE); + + ret = eeh_ops->get_state(dev_pe, NULL); + if (ret <= 0 || (ret & active_flags) == active_flags) { + dev_pe = dev_pe->parent; + continue; + } + + /* Frozen parent PE */ + *pe = dev_pe; + if (!(dev_pe->state & EEH_PE_ISOLATED)) + phb->freeze_pe(phb, dev_pe->addr); + + /* Next one */ + dev_pe = dev_pe->parent; + } + return 0; } @@ -971,5 +1134,6 @@ struct pnv_eeh_ops ioda_eeh_ops = { .reset = ioda_eeh_reset, .get_log = ioda_eeh_get_log, .configure_bridge = ioda_eeh_configure_bridge, + .err_inject = ioda_eeh_err_inject, .next_error = ioda_eeh_next_error }; diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index fd7a16f..3e89cbf 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -359,6 +359,31 @@ static int powernv_eeh_configure_bridge(struct eeh_pe *pe) } /** + * powernv_pe_err_inject - Inject specified error to the indicated PE + * @pe: the indicated PE + * @type: error type + * @func: specific error type + * @addr: address + * @mask: address mask + * + * The routine is called to inject specified error, which is + * determined by @type and @func, to the indicated PE for + * testing purpose. + */ +static int powernv_eeh_err_inject(struct eeh_pe *pe, int type, int func, + unsigned long addr, unsigned long mask) +{ + struct pci_controller *hose = pe->phb; + struct pnv_phb *phb = hose->private_data; + int ret = -EEXIST; + + if (phb->eeh_ops && phb->eeh_ops->err_inject) + ret = phb->eeh_ops->err_inject(pe, type, func, addr, mask); + + return ret; +} + +/** * powernv_eeh_next_error - Retrieve next EEH error to handle * @pe: Affected PE * @@ -414,6 +439,7 @@ static struct eeh_ops powernv_eeh_ops = { .wait_state = powernv_eeh_wait_state, .get_log = powernv_eeh_get_log, .configure_bridge = powernv_eeh_configure_bridge, + .err_inject = powernv_eeh_err_inject, .read_config = pnv_pci_cfg_read, .write_config = pnv_pci_cfg_write, .next_error = powernv_eeh_next_error, diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index 85bb8ff..23260f7 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -112,7 +112,7 @@ static ssize_t init_dump_show(struct dump_obj *dump_obj, struct dump_attribute *attr, char *buf) { - return sprintf(buf, "1 - initiate dump\n"); + return sprintf(buf, "1 - initiate Service Processor(FSP) dump\n"); } static int64_t dump_fips_init(uint8_t type) @@ -121,7 +121,7 @@ static int64_t dump_fips_init(uint8_t type) rc = opal_dump_init(type); if (rc) - pr_warn("%s: Failed to initiate FipS dump (%d)\n", + pr_warn("%s: Failed to initiate FSP dump (%d)\n", __func__, rc); return rc; } @@ -131,8 +131,12 @@ static ssize_t init_dump_store(struct dump_obj *dump_obj, const char *buf, size_t count) { - dump_fips_init(DUMP_TYPE_FSP); - pr_info("%s: Initiated FSP dump\n", __func__); + int rc; + + rc = dump_fips_init(DUMP_TYPE_FSP); + if (rc == OPAL_SUCCESS) + pr_info("%s: Initiated FSP dump\n", __func__); + return count; } @@ -297,7 +301,7 @@ static ssize_t dump_attr_read(struct file *filep, struct kobject *kobj, * and rely on userspace to ask us to try * again. */ - pr_info("%s: Platform dump partially read.ID = 0x%x\n", + pr_info("%s: Platform dump partially read. ID = 0x%x\n", __func__, dump->id); return -EIO; } @@ -423,6 +427,10 @@ void __init opal_platform_dump_init(void) { int rc; + /* ELOG not supported by firmware */ + if (!opal_check_token(OPAL_DUMP_READ)) + return; + dump_kset = kset_create_and_add("dump", NULL, opal_kobj); if (!dump_kset) { pr_warn("%s: Failed to create dump kset\n", __func__); diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index bbdb3ff..518fe95 100644 --- a/arch/powerpc/platforms/powernv/opal-elog.c +++ b/arch/powerpc/platforms/powernv/opal-elog.c @@ -295,6 +295,10 @@ int __init opal_elog_init(void) { int rc = 0; + /* ELOG not supported by firmware */ + if (!opal_check_token(OPAL_ELOG_READ)) + return -1; + elog_kset = kset_create_and_add("elog", NULL, opal_kobj); if (!elog_kset) { pr_warn("%s: failed to create elog kset\n", __func__); diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c index ad4b31d..dd2c285 100644 --- a/arch/powerpc/platforms/powernv/opal-lpc.c +++ b/arch/powerpc/platforms/powernv/opal-lpc.c @@ -191,6 +191,7 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf, { struct lpc_debugfs_entry *lpc = filp->private_data; u32 data, pos, len, todo; + __be32 bedata; int rc; if (!access_ok(VERIFY_WRITE, ubuf, count)) @@ -213,9 +214,10 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf, len = 2; } rc = opal_lpc_read(opal_lpc_chip_id, lpc->lpc_type, pos, - &data, len); + &bedata, len); if (rc) return -ENXIO; + data = be32_to_cpu(bedata); switch(len) { case 4: rc = __put_user((u32)data, (u32 __user *)ubuf); diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c index acd9f7e..f9896fd 100644 --- a/arch/powerpc/platforms/powernv/opal-nvram.c +++ b/arch/powerpc/platforms/powernv/opal-nvram.c @@ -78,7 +78,7 @@ void __init opal_nvram_init(void) } nvram_size = be32_to_cpup(nbytes_p); - printk(KERN_INFO "OPAL nvram setup, %u bytes\n", nvram_size); + pr_info("OPAL nvram setup, %u bytes\n", nvram_size); of_node_put(np); ppc_md.nvram_read = opal_nvram_read; diff --git a/arch/powerpc/platforms/powernv/opal-rtc.c b/arch/powerpc/platforms/powernv/opal-rtc.c index b1885db..499707d 100644 --- a/arch/powerpc/platforms/powernv/opal-rtc.c +++ b/arch/powerpc/platforms/powernv/opal-rtc.c @@ -42,6 +42,9 @@ unsigned long __init opal_get_boot_time(void) __be64 __h_m_s_ms; long rc = OPAL_BUSY; + if (!opal_check_token(OPAL_RTC_READ)) + goto out; + while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms); if (rc == OPAL_BUSY_EVENT) @@ -49,16 +52,18 @@ unsigned long __init opal_get_boot_time(void) else mdelay(10); } - if (rc != OPAL_SUCCESS) { - ppc_md.get_rtc_time = NULL; - ppc_md.set_rtc_time = NULL; - return 0; - } + if (rc != OPAL_SUCCESS) + goto out; + y_m_d = be32_to_cpu(__y_m_d); h_m_s_ms = be64_to_cpu(__h_m_s_ms); opal_to_tm(y_m_d, h_m_s_ms, &tm); return mktime(tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); +out: + ppc_md.get_rtc_time = NULL; + ppc_md.set_rtc_time = NULL; + return 0; } void opal_get_rtc_time(struct rtc_time *tm) diff --git a/arch/powerpc/platforms/powernv/opal-tracepoints.c b/arch/powerpc/platforms/powernv/opal-tracepoints.c index d8a000a..ae14c40 100644 --- a/arch/powerpc/platforms/powernv/opal-tracepoints.c +++ b/arch/powerpc/platforms/powernv/opal-tracepoints.c @@ -2,7 +2,7 @@ #include <linux/jump_label.h> #include <asm/trace.h> -#ifdef CONFIG_JUMP_LABEL +#ifdef HAVE_JUMP_LABEL struct static_key opal_tracepoint_key = STATIC_KEY_INIT; void opal_tracepoint_regfunc(void) diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index 2e6ce1b..e9e2450 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -184,6 +184,7 @@ OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER) OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS); OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR); OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET); +OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT); OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC); OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE); OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW); @@ -232,6 +233,7 @@ OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE); OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE); OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE); OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE); +OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN); OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT); OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO); OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2); @@ -247,3 +249,4 @@ OPAL_CALL(opal_set_param, OPAL_SET_PARAM); OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI); OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION); OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION); +OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CXL_MODE); diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 4b005ae..b642b05 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -105,12 +105,12 @@ int __init early_init_dt_scan_opal(unsigned long node, if (of_flat_dt_is_compatible(node, "ibm,opal-v3")) { powerpc_firmware_features |= FW_FEATURE_OPALv2; powerpc_firmware_features |= FW_FEATURE_OPALv3; - printk("OPAL V3 detected !\n"); + pr_info("OPAL V3 detected !\n"); } else if (of_flat_dt_is_compatible(node, "ibm,opal-v2")) { powerpc_firmware_features |= FW_FEATURE_OPALv2; - printk("OPAL V2 detected !\n"); + pr_info("OPAL V2 detected !\n"); } else { - printk("OPAL V1 detected !\n"); + pr_info("OPAL V1 detected !\n"); } /* Reinit all cores with the right endian */ diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index df241b1..468a0f2 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -37,41 +37,43 @@ #include <asm/xics.h> #include <asm/debug.h> #include <asm/firmware.h> +#include <asm/pnv-pci.h> + +#include <misc/cxl.h> #include "powernv.h" #include "pci.h" -#define define_pe_printk_level(func, kern_level) \ -static int func(const struct pnv_ioda_pe *pe, const char *fmt, ...) \ -{ \ - struct va_format vaf; \ - va_list args; \ - char pfix[32]; \ - int r; \ - \ - va_start(args, fmt); \ - \ - vaf.fmt = fmt; \ - vaf.va = &args; \ - \ - if (pe->pdev) \ - strlcpy(pfix, dev_name(&pe->pdev->dev), \ - sizeof(pfix)); \ - else \ - sprintf(pfix, "%04x:%02x ", \ - pci_domain_nr(pe->pbus), \ - pe->pbus->number); \ - r = printk(kern_level "pci %s: [PE# %.3d] %pV", \ - pfix, pe->pe_number, &vaf); \ - \ - va_end(args); \ - \ - return r; \ -} \ - -define_pe_printk_level(pe_err, KERN_ERR); -define_pe_printk_level(pe_warn, KERN_WARNING); -define_pe_printk_level(pe_info, KERN_INFO); +static void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, + const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + char pfix[32]; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + if (pe->pdev) + strlcpy(pfix, dev_name(&pe->pdev->dev), sizeof(pfix)); + else + sprintf(pfix, "%04x:%02x ", + pci_domain_nr(pe->pbus), pe->pbus->number); + + printk("%spci %s: [PE# %.3d] %pV", + level, pfix, pe->pe_number, &vaf); + + va_end(args); +} + +#define pe_err(pe, fmt, ...) \ + pe_level_printk(pe, KERN_ERR, fmt, ##__VA_ARGS__) +#define pe_warn(pe, fmt, ...) \ + pe_level_printk(pe, KERN_WARNING, fmt, ##__VA_ARGS__) +#define pe_info(pe, fmt, ...) \ + pe_level_printk(pe, KERN_INFO, fmt, ##__VA_ARGS__) /* * stdcix is only supposed to be used in hypervisor real mode as per @@ -385,7 +387,7 @@ static void pnv_ioda_freeze_pe(struct pnv_phb *phb, int pe_no) } } -int pnv_ioda_unfreeze_pe(struct pnv_phb *phb, int pe_no, int opt) +static int pnv_ioda_unfreeze_pe(struct pnv_phb *phb, int pe_no, int opt) { struct pnv_ioda_pe *pe, *slave; s64 rc; @@ -890,6 +892,28 @@ static int pnv_pci_ioda_dma_set_mask(struct pnv_phb *phb, return 0; } +static u64 pnv_pci_ioda_dma_get_required_mask(struct pnv_phb *phb, + struct pci_dev *pdev) +{ + struct pci_dn *pdn = pci_get_pdn(pdev); + struct pnv_ioda_pe *pe; + u64 end, mask; + + if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) + return 0; + + pe = &phb->ioda.pe_array[pdn->pe_number]; + if (!pe->tce_bypass_enabled) + return __dma_get_required_mask(&pdev->dev); + + + end = pe->tce_bypass_base + memblock_end_of_DRAM(); + mask = 1ULL << (fls64(end) - 1); + mask += mask - 1; + + return mask; +} + static void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus, bool add_to_iommu_group) @@ -1306,14 +1330,186 @@ static void pnv_ioda2_msi_eoi(struct irq_data *d) icp_native_eoi(d); } + +static void set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq) +{ + struct irq_data *idata; + struct irq_chip *ichip; + + if (phb->type != PNV_PHB_IODA2) + return; + + if (!phb->ioda.irq_chip_init) { + /* + * First time we setup an MSI IRQ, we need to setup the + * corresponding IRQ chip to route correctly. + */ + idata = irq_get_irq_data(virq); + ichip = irq_data_get_irq_chip(idata); + phb->ioda.irq_chip_init = 1; + phb->ioda.irq_chip = *ichip; + phb->ioda.irq_chip.irq_eoi = pnv_ioda2_msi_eoi; + } + irq_set_chip(virq, &phb->ioda.irq_chip); +} + +#ifdef CONFIG_CXL_BASE + +struct device_node *pnv_pci_to_phb_node(struct pci_dev *dev) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + + return hose->dn; +} +EXPORT_SYMBOL(pnv_pci_to_phb_node); + +int pnv_phb_to_cxl(struct pci_dev *dev) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + struct pnv_ioda_pe *pe; + int rc; + + pe = pnv_ioda_get_pe(dev); + if (!pe) + return -ENODEV; + + pe_info(pe, "Switching PHB to CXL\n"); + + rc = opal_pci_set_phb_cxl_mode(phb->opal_id, 1, pe->pe_number); + if (rc) + dev_err(&dev->dev, "opal_pci_set_phb_cxl_mode failed: %i\n", rc); + + return rc; +} +EXPORT_SYMBOL(pnv_phb_to_cxl); + +/* Find PHB for cxl dev and allocate MSI hwirqs? + * Returns the absolute hardware IRQ number + */ +int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + int hwirq = msi_bitmap_alloc_hwirqs(&phb->msi_bmp, num); + + if (hwirq < 0) { + dev_warn(&dev->dev, "Failed to find a free MSI\n"); + return -ENOSPC; + } + + return phb->msi_base + hwirq; +} +EXPORT_SYMBOL(pnv_cxl_alloc_hwirqs); + +void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + + msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq - phb->msi_base, num); +} +EXPORT_SYMBOL(pnv_cxl_release_hwirqs); + +void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs, + struct pci_dev *dev) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + int i, hwirq; + + for (i = 1; i < CXL_IRQ_RANGES; i++) { + if (!irqs->range[i]) + continue; + pr_devel("cxl release irq range 0x%x: offset: 0x%lx limit: %ld\n", + i, irqs->offset[i], + irqs->range[i]); + hwirq = irqs->offset[i] - phb->msi_base; + msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq, + irqs->range[i]); + } +} +EXPORT_SYMBOL(pnv_cxl_release_hwirq_ranges); + +int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, + struct pci_dev *dev, int num) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + int i, hwirq, try; + + memset(irqs, 0, sizeof(struct cxl_irq_ranges)); + + /* 0 is reserved for the multiplexed PSL DSI interrupt */ + for (i = 1; i < CXL_IRQ_RANGES && num; i++) { + try = num; + while (try) { + hwirq = msi_bitmap_alloc_hwirqs(&phb->msi_bmp, try); + if (hwirq >= 0) + break; + try /= 2; + } + if (!try) + goto fail; + + irqs->offset[i] = phb->msi_base + hwirq; + irqs->range[i] = try; + pr_devel("cxl alloc irq range 0x%x: offset: 0x%lx limit: %li\n", + i, irqs->offset[i], irqs->range[i]); + num -= try; + } + if (num) + goto fail; + + return 0; +fail: + pnv_cxl_release_hwirq_ranges(irqs, dev); + return -ENOSPC; +} +EXPORT_SYMBOL(pnv_cxl_alloc_hwirq_ranges); + +int pnv_cxl_get_irq_count(struct pci_dev *dev) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + + return phb->msi_bmp.irq_count; +} +EXPORT_SYMBOL(pnv_cxl_get_irq_count); + +int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq, + unsigned int virq) +{ + struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct pnv_phb *phb = hose->private_data; + unsigned int xive_num = hwirq - phb->msi_base; + struct pnv_ioda_pe *pe; + int rc; + + if (!(pe = pnv_ioda_get_pe(dev))) + return -ENODEV; + + /* Assign XIVE to PE */ + rc = opal_pci_set_xive_pe(phb->opal_id, pe->pe_number, xive_num); + if (rc) { + pe_warn(pe, "%s: OPAL error %d setting msi_base 0x%x " + "hwirq 0x%x XIVE 0x%x PE\n", + pci_name(dev), rc, phb->msi_base, hwirq, xive_num); + return -EIO; + } + set_msi_irq_chip(phb, virq); + + return 0; +} +EXPORT_SYMBOL(pnv_cxl_ioda_msi_setup); +#endif + static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev, unsigned int hwirq, unsigned int virq, unsigned int is_64, struct msi_msg *msg) { struct pnv_ioda_pe *pe = pnv_ioda_get_pe(dev); struct pci_dn *pdn = pci_get_pdn(dev); - struct irq_data *idata; - struct irq_chip *ichip; unsigned int xive_num = hwirq - phb->msi_base; __be32 data; int rc; @@ -1365,22 +1561,7 @@ static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev, } msg->data = be32_to_cpu(data); - /* - * Change the IRQ chip for the MSI interrupts on PHB3. - * The corresponding IRQ chip should be populated for - * the first time. - */ - if (phb->type == PNV_PHB_IODA2) { - if (!phb->ioda.irq_chip_init) { - idata = irq_get_irq_data(virq); - ichip = irq_data_get_irq_chip(idata); - phb->ioda.irq_chip_init = 1; - phb->ioda.irq_chip = *ichip; - phb->ioda.irq_chip.irq_eoi = pnv_ioda2_msi_eoi; - } - - irq_set_chip(virq, &phb->ioda.irq_chip); - } + 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", @@ -1627,12 +1808,12 @@ static u32 pnv_ioda_bdfn_to_pe(struct pnv_phb *phb, struct pci_bus *bus, static void pnv_pci_ioda_shutdown(struct pnv_phb *phb) { - opal_pci_reset(phb->opal_id, OPAL_PCI_IODA_TABLE_RESET, + opal_pci_reset(phb->opal_id, OPAL_RESET_PCI_IODA_TABLE, OPAL_ASSERT_RESET); } -void __init pnv_pci_init_ioda_phb(struct device_node *np, - u64 hub_id, int ioda_type) +static void __init pnv_pci_init_ioda_phb(struct device_node *np, + u64 hub_id, int ioda_type) { struct pci_controller *hose; struct pnv_phb *phb; @@ -1782,6 +1963,7 @@ void __init pnv_pci_init_ioda_phb(struct device_node *np, /* Setup TCEs */ phb->dma_dev_setup = pnv_pci_ioda_dma_dev_setup; phb->dma_set_mask = pnv_pci_ioda_dma_set_mask; + phb->dma_get_required_mask = pnv_pci_ioda_dma_get_required_mask; /* Setup shutdown function for kexec */ phb->shutdown = pnv_pci_ioda_shutdown; @@ -1803,7 +1985,7 @@ void __init pnv_pci_init_ioda_phb(struct device_node *np, pci_add_flags(PCI_REASSIGN_ALL_RSRC); /* Reset IODA tables to a clean state */ - rc = opal_pci_reset(phb_id, OPAL_PCI_IODA_TABLE_RESET, OPAL_ASSERT_RESET); + rc = opal_pci_reset(phb_id, OPAL_RESET_PCI_IODA_TABLE, OPAL_ASSERT_RESET); if (rc) pr_warning(" OPAL Error %ld performing IODA table reset !\n", rc); diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index b45c492..b3ca77d 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -753,6 +753,17 @@ int pnv_pci_dma_set_mask(struct pci_dev *pdev, u64 dma_mask) return __dma_set_mask(&pdev->dev, dma_mask); } +u64 pnv_pci_dma_get_required_mask(struct pci_dev *pdev) +{ + struct pci_controller *hose = pci_bus_to_host(pdev->bus); + struct pnv_phb *phb = hose->private_data; + + if (phb && phb->dma_get_required_mask) + return phb->dma_get_required_mask(phb, pdev); + + return __dma_get_required_mask(&pdev->dev); +} + void pnv_pci_shutdown(void) { struct pci_controller *hose; diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 48494d4..34d29eb 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -85,6 +85,8 @@ struct pnv_eeh_ops { int (*get_log)(struct eeh_pe *pe, int severity, char *drv_log, unsigned long len); int (*configure_bridge)(struct eeh_pe *pe); + int (*err_inject)(struct eeh_pe *pe, int type, int func, + unsigned long addr, unsigned long mask); int (*next_error)(struct eeh_pe **pe); }; #endif /* CONFIG_EEH */ @@ -122,6 +124,8 @@ struct pnv_phb { void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev); int (*dma_set_mask)(struct pnv_phb *phb, struct pci_dev *pdev, u64 dma_mask); + u64 (*dma_get_required_mask)(struct pnv_phb *phb, + struct pci_dev *pdev); void (*fixup_phb)(struct pci_controller *hose); u32 (*bdfn_to_pe)(struct pnv_phb *phb, struct pci_bus *bus, u32 devfn); void (*shutdown)(struct pnv_phb *phb); diff --git a/arch/powerpc/platforms/powernv/powernv.h b/arch/powerpc/platforms/powernv/powernv.h index 75501bf..6c8e2d1 100644 --- a/arch/powerpc/platforms/powernv/powernv.h +++ b/arch/powerpc/platforms/powernv/powernv.h @@ -13,6 +13,7 @@ struct pci_dev; extern void pnv_pci_init(void); extern void pnv_pci_shutdown(void); extern int pnv_pci_dma_set_mask(struct pci_dev *pdev, u64 dma_mask); +extern u64 pnv_pci_dma_get_required_mask(struct pci_dev *pdev); #else static inline void pnv_pci_init(void) { } static inline void pnv_pci_shutdown(void) { } @@ -21,6 +22,11 @@ static inline int pnv_pci_dma_set_mask(struct pci_dev *pdev, u64 dma_mask) { return -ENODEV; } + +static inline u64 pnv_pci_dma_get_required_mask(struct pci_dev *pdev) +{ + return 0; +} #endif extern void pnv_lpc_init(void); diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 5a0e2dc..3f9546d 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -173,6 +173,14 @@ static int pnv_dma_set_mask(struct device *dev, u64 dma_mask) return __dma_set_mask(dev, dma_mask); } +static u64 pnv_dma_get_required_mask(struct device *dev) +{ + if (dev_is_pci(dev)) + return pnv_pci_dma_get_required_mask(to_pci_dev(dev)); + + return __dma_get_required_mask(dev); +} + static void pnv_shutdown(void) { /* Let the PCI code clear up IODA tables */ @@ -307,7 +315,7 @@ static int __init pnv_probe(void) * Returns the cpu frequency for 'cpu' in Hz. This is used by * /proc/cpuinfo */ -unsigned long pnv_get_proc_freq(unsigned int cpu) +static unsigned long pnv_get_proc_freq(unsigned int cpu) { unsigned long ret_freq; @@ -335,6 +343,7 @@ define_machine(powernv) { .power_save = power7_idle, .calibrate_decr = generic_calibrate_decr, .dma_set_mask = pnv_dma_set_mask, + .dma_get_required_mask = pnv_dma_get_required_mask, #ifdef CONFIG_KEXEC .kexec_cpu_down = pnv_kexec_cpu_down, #endif diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index 5fcfcf4..4753958 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -54,7 +54,7 @@ static void pnv_smp_setup_cpu(int cpu) #endif } -int pnv_smp_kick_cpu(int nr) +static int pnv_smp_kick_cpu(int nr) { unsigned int pcpu = get_hard_smp_processor_id(nr); unsigned long start_here = @@ -168,9 +168,9 @@ static void pnv_smp_cpu_kill_self(void) power7_nap(1); ppc64_runlatch_on(); - /* Reenable IRQs briefly to clear the IPI that woke us */ - local_irq_enable(); - local_irq_disable(); + /* Clear the IPI that woke us up */ + icp_native_flush_interrupt(); + local_paca->irq_happened &= PACA_IRQ_HARD_DIS; mb(); if (cpu_core_split_required()) diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c index 894ecb3..c87f96b 100644 --- a/arch/powerpc/platforms/powernv/subcore.c +++ b/arch/powerpc/platforms/powernv/subcore.c @@ -24,6 +24,7 @@ #include <asm/smp.h> #include "subcore.h" +#include "powernv.h" /* diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c index 2d8bf15..fc44ad0 100644 --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -555,7 +555,6 @@ static int cmm_mem_going_offline(void *arg) pa_last = pa_last->next; free_page((unsigned long)cmm_page_list); cmm_page_list = pa_last; - continue; } } pa_curr = pa_curr->next; diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index a2450b8..fdf01b6 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/of.h> #include "offline_states.h" +#include "pseries.h" #include <asm/prom.h> #include <asm/machdep.h> @@ -363,7 +364,8 @@ static int dlpar_online_cpu(struct device_node *dn) int rc = 0; unsigned int cpu; int len, nthreads, i; - const u32 *intserv; + const __be32 *intserv; + u32 thread; intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); if (!intserv) @@ -373,8 +375,9 @@ static int dlpar_online_cpu(struct device_node *dn) cpu_maps_update_begin(); for (i = 0; i < nthreads; i++) { + thread = be32_to_cpu(intserv[i]); for_each_present_cpu(cpu) { - if (get_hard_smp_processor_id(cpu) != intserv[i]) + if (get_hard_smp_processor_id(cpu) != thread) continue; BUG_ON(get_cpu_current_state(cpu) != CPU_STATE_OFFLINE); @@ -388,7 +391,7 @@ static int dlpar_online_cpu(struct device_node *dn) } if (cpu == num_possible_cpus()) printk(KERN_WARNING "Could not find cpu to online " - "with physical id 0x%x\n", intserv[i]); + "with physical id 0x%x\n", thread); } cpu_maps_update_done(); @@ -442,7 +445,8 @@ static int dlpar_offline_cpu(struct device_node *dn) int rc = 0; unsigned int cpu; int len, nthreads, i; - const u32 *intserv; + const __be32 *intserv; + u32 thread; intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); if (!intserv) @@ -452,8 +456,9 @@ static int dlpar_offline_cpu(struct device_node *dn) cpu_maps_update_begin(); for (i = 0; i < nthreads; i++) { + thread = be32_to_cpu(intserv[i]); for_each_present_cpu(cpu) { - if (get_hard_smp_processor_id(cpu) != intserv[i]) + if (get_hard_smp_processor_id(cpu) != thread) continue; if (get_cpu_current_state(cpu) == CPU_STATE_OFFLINE) @@ -475,14 +480,14 @@ static int dlpar_offline_cpu(struct device_node *dn) * Upgrade it's state to CPU_STATE_OFFLINE. */ set_preferred_offline_state(cpu, CPU_STATE_OFFLINE); - BUG_ON(plpar_hcall_norets(H_PROD, intserv[i]) + BUG_ON(plpar_hcall_norets(H_PROD, thread) != H_SUCCESS); __cpu_die(cpu); break; } if (cpu == num_possible_cpus()) printk(KERN_WARNING "Could not find cpu to offline " - "with physical id 0x%x\n", intserv[i]); + "with physical id 0x%x\n", thread); } cpu_maps_update_done(); @@ -494,15 +499,15 @@ out: static ssize_t dlpar_cpu_release(const char *buf, size_t count) { struct device_node *dn; - const u32 *drc_index; + u32 drc_index; int rc; dn = of_find_node_by_path(buf); if (!dn) return -EINVAL; - drc_index = of_get_property(dn, "ibm,my-drc-index", NULL); - if (!drc_index) { + rc = of_property_read_u32(dn, "ibm,my-drc-index", &drc_index); + if (rc) { of_node_put(dn); return -EINVAL; } @@ -513,7 +518,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count) return -EINVAL; } - rc = dlpar_release_drc(*drc_index); + rc = dlpar_release_drc(drc_index); if (rc) { of_node_put(dn); return rc; @@ -521,7 +526,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count) rc = dlpar_detach_node(dn); if (rc) { - dlpar_acquire_drc(*drc_index); + dlpar_acquire_drc(drc_index); return rc; } diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index b080538..a6c7e19 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -88,29 +88,14 @@ static int pseries_eeh_init(void) * and its variant since the old firmware probably support address * of domain/bus/slot/function for EEH RTAS operations. */ - if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE) { - pr_warn("%s: RTAS service <ibm,set-eeh-option> invalid\n", - __func__); - return -EINVAL; - } else if (ibm_set_slot_reset == RTAS_UNKNOWN_SERVICE) { - pr_warn("%s: RTAS service <ibm,set-slot-reset> invalid\n", - __func__); - return -EINVAL; - } else if (ibm_read_slot_reset_state2 == RTAS_UNKNOWN_SERVICE && - ibm_read_slot_reset_state == RTAS_UNKNOWN_SERVICE) { - pr_warn("%s: RTAS service <ibm,read-slot-reset-state2> and " - "<ibm,read-slot-reset-state> invalid\n", - __func__); - return -EINVAL; - } else if (ibm_slot_error_detail == RTAS_UNKNOWN_SERVICE) { - pr_warn("%s: RTAS service <ibm,slot-error-detail> invalid\n", - __func__); - return -EINVAL; - } else if (ibm_configure_pe == RTAS_UNKNOWN_SERVICE && - ibm_configure_bridge == RTAS_UNKNOWN_SERVICE) { - pr_warn("%s: RTAS service <ibm,configure-pe> and " - "<ibm,configure-bridge> invalid\n", - __func__); + if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE || + ibm_set_slot_reset == RTAS_UNKNOWN_SERVICE || + (ibm_read_slot_reset_state2 == RTAS_UNKNOWN_SERVICE && + ibm_read_slot_reset_state == RTAS_UNKNOWN_SERVICE) || + ibm_slot_error_detail == RTAS_UNKNOWN_SERVICE || + (ibm_configure_pe == RTAS_UNKNOWN_SERVICE && + ibm_configure_bridge == RTAS_UNKNOWN_SERVICE)) { + pr_info("EEH functionality not supported\n"); return -EINVAL; } @@ -118,11 +103,11 @@ static int pseries_eeh_init(void) spin_lock_init(&slot_errbuf_lock); eeh_error_buf_size = rtas_token("rtas-error-log-max"); if (eeh_error_buf_size == RTAS_UNKNOWN_SERVICE) { - pr_warn("%s: unknown EEH error log size\n", + pr_info("%s: unknown EEH error log size\n", __func__); eeh_error_buf_size = 1024; } else if (eeh_error_buf_size > RTAS_ERROR_LOG_MAX) { - pr_warn("%s: EEH error log size %d exceeds the maximal %d\n", + pr_info("%s: EEH error log size %d exceeds the maximal %d\n", __func__, eeh_error_buf_size, RTAS_ERROR_LOG_MAX); eeh_error_buf_size = RTAS_ERROR_LOG_MAX; } @@ -349,7 +334,9 @@ static int pseries_eeh_set_option(struct eeh_pe *pe, int option) if (pe->addr) config_addr = pe->addr; break; - + case EEH_OPT_FREEZE_PE: + /* Not support */ + return 0; default: pr_err("%s: Invalid option %d\n", __func__, option); @@ -729,6 +716,7 @@ static struct eeh_ops pseries_eeh_ops = { .wait_state = pseries_eeh_wait_state, .get_log = pseries_eeh_get_log, .configure_bridge = pseries_eeh_configure_bridge, + .err_inject = NULL, .read_config = pseries_eeh_read_config, .write_config = pseries_eeh_write_config, .next_error = NULL, diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 20d6297..b174fa7 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -90,7 +90,7 @@ static void rtas_stop_self(void) { static struct rtas_args args = { .nargs = 0, - .nret = 1, + .nret = cpu_to_be32(1), .rets = &args.args[0], }; @@ -312,7 +312,8 @@ static void pseries_remove_processor(struct device_node *np) { unsigned int cpu; int len, nthreads, i; - const u32 *intserv; + const __be32 *intserv; + u32 thread; intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); if (!intserv) @@ -322,8 +323,9 @@ static void pseries_remove_processor(struct device_node *np) cpu_maps_update_begin(); for (i = 0; i < nthreads; i++) { + thread = be32_to_cpu(intserv[i]); for_each_present_cpu(cpu) { - if (get_hard_smp_processor_id(cpu) != intserv[i]) + if (get_hard_smp_processor_id(cpu) != thread) continue; BUG_ON(cpu_online(cpu)); set_cpu_present(cpu, false); @@ -332,7 +334,7 @@ static void pseries_remove_processor(struct device_node *np) } if (cpu >= nr_cpu_ids) printk(KERN_WARNING "Could not find cpu to remove " - "with physical id 0x%x\n", intserv[i]); + "with physical id 0x%x\n", thread); } cpu_maps_update_done(); } diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 34064f5..3c4c0dc 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -20,6 +20,7 @@ #include <asm/machdep.h> #include <asm/prom.h> #include <asm/sparsemem.h> +#include "pseries.h" unsigned long pseries_memory_block_size(void) { diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 4642d6a..de1ec54 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -329,16 +329,16 @@ struct direct_window { /* Dynamic DMA Window support */ struct ddw_query_response { - __be32 windows_available; - __be32 largest_available_block; - __be32 page_size; - __be32 migration_capable; + u32 windows_available; + u32 largest_available_block; + u32 page_size; + u32 migration_capable; }; struct ddw_create_response { - __be32 liobn; - __be32 addr_hi; - __be32 addr_lo; + u32 liobn; + u32 addr_hi; + u32 addr_lo; }; static LIST_HEAD(direct_window_list); @@ -725,16 +725,18 @@ static void remove_ddw(struct device_node *np, bool remove_prop) { struct dynamic_dma_window_prop *dwp; struct property *win64; - const u32 *ddw_avail; + u32 ddw_avail[3]; u64 liobn; - int len, ret = 0; + int ret = 0; + + ret = of_property_read_u32_array(np, "ibm,ddw-applicable", + &ddw_avail[0], 3); - ddw_avail = of_get_property(np, "ibm,ddw-applicable", &len); win64 = of_find_property(np, DIRECT64_PROPNAME, NULL); if (!win64) return; - if (!ddw_avail || len < 3 * sizeof(u32) || win64->length < sizeof(*dwp)) + if (ret || win64->length < sizeof(*dwp)) goto delprop; dwp = win64->value; @@ -872,8 +874,9 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail, do { /* extra outputs are LIOBN and dma-addr (hi, lo) */ - ret = rtas_call(ddw_avail[1], 5, 4, (u32 *)create, cfg_addr, - BUID_HI(buid), BUID_LO(buid), page_shift, window_shift); + ret = rtas_call(ddw_avail[1], 5, 4, (u32 *)create, + cfg_addr, BUID_HI(buid), BUID_LO(buid), + page_shift, window_shift); } while (rtas_busy_delay(ret)); dev_info(&dev->dev, "ibm,create-pe-dma-window(%x) %x %x %x %x %x returned %d " @@ -910,7 +913,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) int page_shift; u64 dma_addr, max_addr; struct device_node *dn; - const u32 *uninitialized_var(ddw_avail); + u32 ddw_avail[3]; struct direct_window *window; struct property *win64; struct dynamic_dma_window_prop *ddwprop; @@ -942,8 +945,9 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) * for the given node in that order. * the property is actually in the parent, not the PE */ - ddw_avail = of_get_property(pdn, "ibm,ddw-applicable", &len); - if (!ddw_avail || len < 3 * sizeof(u32)) + ret = of_property_read_u32_array(pdn, "ibm,ddw-applicable", + &ddw_avail[0], 3); + if (ret) goto out_failed; /* @@ -966,11 +970,11 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) dev_dbg(&dev->dev, "no free dynamic windows"); goto out_failed; } - if (be32_to_cpu(query.page_size) & 4) { + if (query.page_size & 4) { page_shift = 24; /* 16MB */ - } else if (be32_to_cpu(query.page_size) & 2) { + } else if (query.page_size & 2) { page_shift = 16; /* 64kB */ - } else if (be32_to_cpu(query.page_size) & 1) { + } else if (query.page_size & 1) { page_shift = 12; /* 4kB */ } else { dev_dbg(&dev->dev, "no supported direct page size in mask %x", @@ -980,7 +984,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) /* verify the window * number of ptes will map the partition */ /* check largest block * page size > max memory hotplug addr */ max_addr = memory_hotplug_max(); - if (be32_to_cpu(query.largest_available_block) < (max_addr >> page_shift)) { + if (query.largest_available_block < (max_addr >> page_shift)) { dev_dbg(&dev->dev, "can't map partiton max 0x%llx with %u " "%llu-sized pages\n", max_addr, query.largest_available_block, 1ULL << page_shift); @@ -1006,8 +1010,9 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) if (ret != 0) goto out_free_prop; - ddwprop->liobn = create.liobn; - ddwprop->dma_base = cpu_to_be64(of_read_number(&create.addr_hi, 2)); + ddwprop->liobn = cpu_to_be32(create.liobn); + ddwprop->dma_base = cpu_to_be64(((u64)create.addr_hi << 32) | + create.addr_lo); ddwprop->tce_shift = cpu_to_be32(page_shift); ddwprop->window_shift = cpu_to_be32(len); @@ -1039,7 +1044,7 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn) list_add(&window->list, &direct_window_list); spin_unlock(&direct_window_list_lock); - dma_addr = of_read_number(&create.addr_hi, 2); + dma_addr = be64_to_cpu(ddwprop->dma_base); goto out_unlock; out_free_window: diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 34e6423..8c509d5 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -59,8 +59,6 @@ EXPORT_SYMBOL(plpar_hcall); EXPORT_SYMBOL(plpar_hcall9); EXPORT_SYMBOL(plpar_hcall_norets); -extern void pSeries_find_serial_port(void); - void vpa_init(int cpu) { int hwcpu = get_hard_smp_processor_id(cpu); @@ -642,7 +640,7 @@ EXPORT_SYMBOL(arch_free_page); #endif #ifdef CONFIG_TRACEPOINTS -#ifdef CONFIG_JUMP_LABEL +#ifdef HAVE_JUMP_LABEL struct static_key hcall_tracepoint_key = STATIC_KEY_INIT; void hcall_tracepoint_regfunc(void) diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index 0cc240b..11a3b61 100644 --- a/arch/powerpc/platforms/pseries/nvram.c +++ b/arch/powerpc/platforms/pseries/nvram.c @@ -276,8 +276,10 @@ static ssize_t pSeries_nvram_get_size(void) * sequence #: The unique sequence # for each event. (until it wraps) * error log: The error log from event_scan */ -int nvram_write_os_partition(struct nvram_os_partition *part, char * buff, - int length, unsigned int err_type, unsigned int error_log_cnt) +static int nvram_write_os_partition(struct nvram_os_partition *part, + char *buff, int length, + unsigned int err_type, + unsigned int error_log_cnt) { int rc; loff_t tmp_index; @@ -330,9 +332,9 @@ int nvram_write_error_log(char * buff, int length, * * Reads nvram partition for at most 'length' */ -int nvram_read_partition(struct nvram_os_partition *part, char *buff, - int length, unsigned int *err_type, - unsigned int *error_log_cnt) +static int nvram_read_partition(struct nvram_os_partition *part, char *buff, + int length, unsigned int *err_type, + unsigned int *error_log_cnt) { int rc; loff_t tmp_index; diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index c413ec1..67e4859 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -29,6 +29,7 @@ #include <asm/pci-bridge.h> #include <asm/prom.h> #include <asm/ppc-pci.h> +#include "pseries.h" #if 0 void pcibios_name_device(struct pci_dev *dev) diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index dff05b9..5a4d0fc 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -126,7 +126,7 @@ struct epow_errorlog { #define EPOW_MAIN_ENCLOSURE 5 #define EPOW_POWER_OFF 7 -void rtas_parse_epow_errlog(struct rtas_error_log *log) +static void rtas_parse_epow_errlog(struct rtas_error_log *log) { struct pseries_errorlog *pseries_log; struct epow_errorlog *epow_log; diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index e724d31..125c589 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -561,7 +561,7 @@ void pSeries_coalesce_init(void) * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions, * handle that here. (Stolen from parse_system_parameter_string) */ -void pSeries_cmo_feature_init(void) +static void pSeries_cmo_feature_init(void) { char *ptr, *key, *value, *end; int call_status; diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index 47b6b9f..ad56edc 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -314,7 +314,7 @@ axon_ram_remove(struct platform_device *device) return 0; } -static struct of_device_id axon_ram_device_id[] = { +static const struct of_device_id axon_ram_device_id[] = { { .type = "dma-memory" }, diff --git a/arch/powerpc/sysdev/dcr.c b/arch/powerpc/sysdev/dcr.c index e9056e4..2d8a101 100644 --- a/arch/powerpc/sysdev/dcr.c +++ b/arch/powerpc/sysdev/dcr.c @@ -230,5 +230,6 @@ EXPORT_SYMBOL_GPL(dcr_unmap_mmio); #ifdef CONFIG_PPC_DCR_NATIVE DEFINE_SPINLOCK(dcr_ind_lock); +EXPORT_SYMBOL_GPL(dcr_ind_lock); #endif /* defined(CONFIG_PPC_DCR_NATIVE) */ diff --git a/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c b/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c index afc2dbf..90545ad 100644 --- a/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c +++ b/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c @@ -171,7 +171,7 @@ static int mpc85xx_l2ctlr_of_remove(struct platform_device *dev) return 0; } -static struct of_device_id mpc85xx_l2ctlr_of_match[] = { +static const struct of_device_id mpc85xx_l2ctlr_of_match[] = { { .compatible = "fsl,p2020-l2-cache-controller", }, diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index b32e79d..de40b48 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -18,6 +18,8 @@ #include <linux/pci.h> #include <linux/slab.h> #include <linux/of_platform.h> +#include <linux/interrupt.h> +#include <linux/seq_file.h> #include <sysdev/fsl_soc.h> #include <asm/prom.h> #include <asm/hw_irq.h> @@ -50,6 +52,7 @@ struct fsl_msi_feature { struct fsl_msi_cascade_data { struct fsl_msi *msi_data; int index; + int virq; }; static inline u32 fsl_msi_read(u32 __iomem *base, unsigned int reg) @@ -65,11 +68,24 @@ static void fsl_msi_end_irq(struct irq_data *d) { } +static void fsl_msi_print_chip(struct irq_data *irqd, struct seq_file *p) +{ + struct fsl_msi *msi_data = irqd->domain->host_data; + irq_hw_number_t hwirq = irqd_to_hwirq(irqd); + int cascade_virq, srs; + + srs = (hwirq >> msi_data->srs_shift) & MSI_SRS_MASK; + cascade_virq = msi_data->cascade_array[srs]->virq; + + seq_printf(p, " fsl-msi-%d", cascade_virq); +} + + static struct irq_chip fsl_msi_chip = { .irq_mask = mask_msi_irq, .irq_unmask = unmask_msi_irq, .irq_ack = fsl_msi_end_irq, - .name = "FSL-MSI", + .irq_print_chip = fsl_msi_print_chip, }; static int fsl_msi_host_map(struct irq_domain *h, unsigned int virq, @@ -175,7 +191,8 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) np = of_parse_phandle(hose->dn, "fsl,msi", 0); if (np) { if (of_device_is_compatible(np, "fsl,mpic-msi") || - of_device_is_compatible(np, "fsl,vmpic-msi")) + of_device_is_compatible(np, "fsl,vmpic-msi") || + of_device_is_compatible(np, "fsl,vmpic-msi-v4.3")) phandle = np->phandle; else { dev_err(&pdev->dev, @@ -234,40 +251,24 @@ out_free: return rc; } -static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc) +static irqreturn_t fsl_msi_cascade(int irq, void *data) { - struct irq_chip *chip = irq_desc_get_chip(desc); - struct irq_data *idata = irq_desc_get_irq_data(desc); unsigned int cascade_irq; struct fsl_msi *msi_data; int msir_index = -1; u32 msir_value = 0; u32 intr_index; u32 have_shift = 0; - struct fsl_msi_cascade_data *cascade_data; + struct fsl_msi_cascade_data *cascade_data = data; + irqreturn_t ret = IRQ_NONE; - cascade_data = irq_get_handler_data(irq); msi_data = cascade_data->msi_data; - raw_spin_lock(&desc->lock); - if ((msi_data->feature & FSL_PIC_IP_MASK) == FSL_PIC_IP_IPIC) { - if (chip->irq_mask_ack) - chip->irq_mask_ack(idata); - else { - chip->irq_mask(idata); - chip->irq_ack(idata); - } - } - - if (unlikely(irqd_irq_inprogress(idata))) - goto unlock; - msir_index = cascade_data->index; if (msir_index >= NR_MSI_REG_MAX) cascade_irq = NO_IRQ; - irqd_set_chained_irq_inprogress(idata); switch (msi_data->feature & FSL_PIC_IP_MASK) { case FSL_PIC_IP_MPIC: msir_value = fsl_msi_read(msi_data->msi_regs, @@ -296,40 +297,32 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc) cascade_irq = irq_linear_revmap(msi_data->irqhost, msi_hwirq(msi_data, msir_index, intr_index + have_shift)); - if (cascade_irq != NO_IRQ) + if (cascade_irq != NO_IRQ) { generic_handle_irq(cascade_irq); + ret = IRQ_HANDLED; + } have_shift += intr_index + 1; msir_value = msir_value >> (intr_index + 1); } - irqd_clr_chained_irq_inprogress(idata); - switch (msi_data->feature & FSL_PIC_IP_MASK) { - case FSL_PIC_IP_MPIC: - case FSL_PIC_IP_VMPIC: - chip->irq_eoi(idata); - break; - case FSL_PIC_IP_IPIC: - if (!irqd_irq_disabled(idata) && chip->irq_unmask) - chip->irq_unmask(idata); - break; - } -unlock: - raw_spin_unlock(&desc->lock); + return ret; } static int fsl_of_msi_remove(struct platform_device *ofdev) { struct fsl_msi *msi = platform_get_drvdata(ofdev); int virq, i; - struct fsl_msi_cascade_data *cascade_data; if (msi->list.prev != NULL) list_del(&msi->list); for (i = 0; i < NR_MSI_REG_MAX; i++) { - virq = msi->msi_virqs[i]; - if (virq != NO_IRQ) { - cascade_data = irq_get_handler_data(virq); - kfree(cascade_data); + if (msi->cascade_array[i]) { + virq = msi->cascade_array[i]->virq; + + BUG_ON(virq == NO_IRQ); + + free_irq(virq, msi->cascade_array[i]); + kfree(msi->cascade_array[i]); irq_dispose_mapping(virq); } } @@ -348,7 +341,7 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev, int offset, int irq_index) { struct fsl_msi_cascade_data *cascade_data = NULL; - int virt_msir, i; + int virt_msir, i, ret; virt_msir = irq_of_parse_and_map(dev->dev.of_node, irq_index); if (virt_msir == NO_IRQ) { @@ -363,11 +356,18 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev, return -ENOMEM; } irq_set_lockdep_class(virt_msir, &fsl_msi_irq_class); - msi->msi_virqs[irq_index] = virt_msir; cascade_data->index = offset; cascade_data->msi_data = msi; - irq_set_handler_data(virt_msir, cascade_data); - irq_set_chained_handler(virt_msir, fsl_msi_cascade); + cascade_data->virq = virt_msir; + msi->cascade_array[irq_index] = cascade_data; + + ret = request_irq(virt_msir, fsl_msi_cascade, 0, + "fsl-msi-cascade", cascade_data); + if (ret) { + dev_err(&dev->dev, "failed to request_irq(%d), ret = %d\n", + virt_msir, ret); + return ret; + } /* Release the hwirqs corresponding to this MSI register */ for (i = 0; i < IRQS_PER_MSI_REG; i++) @@ -461,7 +461,8 @@ static int fsl_of_msi_probe(struct platform_device *dev) p = of_get_property(dev->dev.of_node, "msi-available-ranges", &len); - if (of_device_is_compatible(dev->dev.of_node, "fsl,mpic-msi-v4.3")) { + if (of_device_is_compatible(dev->dev.of_node, "fsl,mpic-msi-v4.3") || + of_device_is_compatible(dev->dev.of_node, "fsl,vmpic-msi-v4.3")) { msi->srs_shift = MSIIR1_SRS_SHIFT; msi->ibs_shift = MSIIR1_IBS_SHIFT; if (p) @@ -566,6 +567,10 @@ static const struct of_device_id fsl_of_msi_ids[] = { .compatible = "fsl,vmpic-msi", .data = &vmpic_msi_feature, }, + { + .compatible = "fsl,vmpic-msi-v4.3", + .data = &vmpic_msi_feature, + }, #endif {} }; diff --git a/arch/powerpc/sysdev/fsl_msi.h b/arch/powerpc/sysdev/fsl_msi.h index df9aa9f..420cfcb 100644 --- a/arch/powerpc/sysdev/fsl_msi.h +++ b/arch/powerpc/sysdev/fsl_msi.h @@ -27,6 +27,8 @@ #define FSL_PIC_IP_IPIC 0x00000002 #define FSL_PIC_IP_VMPIC 0x00000003 +struct fsl_msi_cascade_data; + struct fsl_msi { struct irq_domain *irqhost; @@ -37,7 +39,7 @@ struct fsl_msi { u32 srs_shift; /* Shift of the shared interrupt register select */ void __iomem *msi_regs; u32 feature; - int msi_virqs[NR_MSI_REG_MAX]; + struct fsl_msi_cascade_data *cascade_array[NR_MSI_REG_MAX]; struct msi_bitmap bitmap; diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index c507767..65d2ed4 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -522,7 +522,8 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary) } else { /* For PCI read PROG to identify controller mode */ early_read_config_byte(hose, 0, 0, PCI_CLASS_PROG, &progif); - if ((progif & 1) == 1) + if ((progif & 1) && + !of_property_read_bool(dev, "fsl,pci-agent-force-enum")) goto no_bridge; } diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index be33c97..89cec0ed 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -960,7 +960,7 @@ void mpic_set_vector(unsigned int virq, unsigned int vector) mpic_irq_write(src, MPIC_INFO(IRQ_VECTOR_PRI), vecpri); } -void mpic_set_destination(unsigned int virq, unsigned int cpuid) +static void mpic_set_destination(unsigned int virq, unsigned int cpuid) { struct mpic *mpic = mpic_from_irq(virq); unsigned int src = virq_to_hw(virq); diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c index 2ff6302..0c75214 100644 --- a/arch/powerpc/sysdev/msi_bitmap.c +++ b/arch/powerpc/sysdev/msi_bitmap.c @@ -20,32 +20,37 @@ int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num) int offset, order = get_count_order(num); spin_lock_irqsave(&bmp->lock, flags); - /* - * This is fast, but stricter than we need. We might want to add - * a fallback routine which does a linear search with no alignment. - */ - offset = bitmap_find_free_region(bmp->bitmap, bmp->irq_count, order); + + offset = bitmap_find_next_zero_area(bmp->bitmap, bmp->irq_count, 0, + num, (1 << order) - 1); + if (offset > bmp->irq_count) + goto err; + + bitmap_set(bmp->bitmap, offset, num); spin_unlock_irqrestore(&bmp->lock, flags); - pr_debug("msi_bitmap: allocated 0x%x (2^%d) at offset 0x%x\n", - num, order, offset); + pr_debug("msi_bitmap: allocated 0x%x at offset 0x%x\n", num, offset); return offset; +err: + spin_unlock_irqrestore(&bmp->lock, flags); + return -ENOMEM; } +EXPORT_SYMBOL(msi_bitmap_alloc_hwirqs); void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, unsigned int num) { unsigned long flags; - int order = get_count_order(num); - pr_debug("msi_bitmap: freeing 0x%x (2^%d) at offset 0x%x\n", - num, order, offset); + pr_debug("msi_bitmap: freeing 0x%x at offset 0x%x\n", + num, offset); spin_lock_irqsave(&bmp->lock, flags); - bitmap_release_region(bmp->bitmap, offset, order); + bitmap_clear(bmp->bitmap, offset, num); spin_unlock_irqrestore(&bmp->lock, flags); } +EXPORT_SYMBOL(msi_bitmap_free_hwirqs); void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq) { @@ -143,7 +148,7 @@ void msi_bitmap_free(struct msi_bitmap *bmp) #define check(x) \ if (!(x)) printk("msi_bitmap: test failed at line %d\n", __LINE__); -void __init test_basics(void) +static void __init test_basics(void) { struct msi_bitmap bmp; int i, size = 512; @@ -180,6 +185,15 @@ void __init test_basics(void) msi_bitmap_free_hwirqs(&bmp, size / 2, 1); check(msi_bitmap_alloc_hwirqs(&bmp, 1) == size / 2); + /* Check we get a naturally aligned offset */ + check(msi_bitmap_alloc_hwirqs(&bmp, 2) % 2 == 0); + check(msi_bitmap_alloc_hwirqs(&bmp, 4) % 4 == 0); + check(msi_bitmap_alloc_hwirqs(&bmp, 8) % 8 == 0); + check(msi_bitmap_alloc_hwirqs(&bmp, 9) % 16 == 0); + check(msi_bitmap_alloc_hwirqs(&bmp, 3) % 4 == 0); + check(msi_bitmap_alloc_hwirqs(&bmp, 7) % 8 == 0); + check(msi_bitmap_alloc_hwirqs(&bmp, 121) % 128 == 0); + msi_bitmap_free(&bmp); /* Clients may check bitmap == NULL for "not-allocated" */ @@ -188,7 +202,7 @@ void __init test_basics(void) kfree(bmp.bitmap); } -void __init test_of_node(void) +static void __init test_of_node(void) { u32 prop_data[] = { 10, 10, 25, 3, 40, 1, 100, 100, 200, 20 }; const char *expected_str = "0-9,20-24,28-39,41-99,220-255"; @@ -236,7 +250,7 @@ void __init test_of_node(void) kfree(bmp.bitmap); } -int __init msi_bitmap_selftest(void) +static int __init msi_bitmap_selftest(void) { printk(KERN_DEBUG "Running MSI bitmap self-tests ...\n"); diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c index c2dba7d..026bbc3 100644 --- a/arch/powerpc/sysdev/mv64x60_dev.c +++ b/arch/powerpc/sysdev/mv64x60_dev.c @@ -23,7 +23,7 @@ /* These functions provide the necessary setup for the mv64x60 drivers. */ -static struct of_device_id __initdata of_mv64x60_devices[] = { +static const struct of_device_id of_mv64x60_devices[] __initconst = { { .compatible = "marvell,mv64306-devctrl", }, {} }; diff --git a/arch/powerpc/sysdev/pmi.c b/arch/powerpc/sysdev/pmi.c index 5aaf86c..13e67d9 100644 --- a/arch/powerpc/sysdev/pmi.c +++ b/arch/powerpc/sysdev/pmi.c @@ -101,7 +101,7 @@ out: } -static struct of_device_id pmi_match[] = { +static const struct of_device_id pmi_match[] = { { .type = "ibm,pmi", .name = "ibm,pmi" }, { .type = "ibm,pmi" }, {}, diff --git a/arch/powerpc/sysdev/xics/icp-native.c b/arch/powerpc/sysdev/xics/icp-native.c index de8d948..2fc4cf1 100644 --- a/arch/powerpc/sysdev/xics/icp-native.c +++ b/arch/powerpc/sysdev/xics/icp-native.c @@ -155,6 +155,31 @@ static void icp_native_cause_ipi(int cpu, unsigned long data) icp_native_set_qirr(cpu, IPI_PRIORITY); } +/* + * Called when an interrupt is received on an off-line CPU to + * clear the interrupt, so that the CPU can go back to nap mode. + */ +void icp_native_flush_interrupt(void) +{ + unsigned int xirr = icp_native_get_xirr(); + unsigned int vec = xirr & 0x00ffffff; + + if (vec == XICS_IRQ_SPURIOUS) + return; + if (vec == XICS_IPI) { + /* Clear pending IPI */ + int cpu = smp_processor_id(); + kvmppc_set_host_ipi(cpu, 0); + icp_native_set_qirr(cpu, 0xff); + } else { + pr_err("XICS: hw interrupt 0x%x to offline cpu, disabling\n", + vec); + xics_mask_unknown_vec(vec); + } + /* EOI the interrupt */ + icp_native_set_xirr(xirr); +} + void xics_wake_cpu(int cpu) { icp_native_set_qirr(cpu, IPI_PRIORITY); diff --git a/arch/powerpc/sysdev/xilinx_intc.c b/arch/powerpc/sysdev/xilinx_intc.c index 83f943a..56f0524 100644 --- a/arch/powerpc/sysdev/xilinx_intc.c +++ b/arch/powerpc/sysdev/xilinx_intc.c @@ -265,7 +265,7 @@ static void __init xilinx_i8259_setup_cascade(void) static inline void xilinx_i8259_setup_cascade(void) { return; } #endif /* defined(CONFIG_PPC_I8259) */ -static struct of_device_id xilinx_intc_match[] __initconst = { +static const struct of_device_id xilinx_intc_match[] __initconst = { { .compatible = "xlnx,opb-intc-1.00.c", }, { .compatible = "xlnx,xps-intc-1.00.a", }, {} diff --git a/arch/powerpc/sysdev/xilinx_pci.c b/arch/powerpc/sysdev/xilinx_pci.c index 1453b0e..fea5667 100644 --- a/arch/powerpc/sysdev/xilinx_pci.c +++ b/arch/powerpc/sysdev/xilinx_pci.c @@ -27,7 +27,7 @@ #define PCI_HOST_ENABLE_CMD PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY -static struct of_device_id xilinx_pci_match[] = { +static const struct of_device_id xilinx_pci_match[] = { { .compatible = "xlnx,plbv46-pci-1.03.a", }, {} }; diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c index 7615180..1f49d97 100644 --- a/drivers/cpufreq/pmac32-cpufreq.c +++ b/drivers/cpufreq/pmac32-cpufreq.c @@ -611,7 +611,7 @@ static int __init pmac_cpufreq_setup(void) struct device_node *cpunode; const u32 *value; - if (strstr(cmd_line, "nocpufreq")) + if (strstr(boot_command_line, "nocpufreq")) return 0; /* Get first CPU node */ diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c index 9e9c5675..226179b 100644 --- a/drivers/macintosh/adb.c +++ b/drivers/macintosh/adb.c @@ -411,6 +411,7 @@ adb_poll(void) return; adb_controller->poll(); } +EXPORT_SYMBOL(adb_poll); static void adb_sync_req_done(struct adb_request *req) { @@ -460,6 +461,7 @@ adb_request(struct adb_request *req, void (*done)(struct adb_request *), return rc; } +EXPORT_SYMBOL(adb_request); /* Ultimately this should return the number of devices with the given default id. @@ -495,6 +497,7 @@ adb_register(int default_id, int handler_id, struct adb_ids *ids, mutex_unlock(&adb_handler_mutex); return ids->nids; } +EXPORT_SYMBOL(adb_register); int adb_unregister(int index) @@ -516,6 +519,7 @@ adb_unregister(int index) mutex_unlock(&adb_handler_mutex); return ret; } +EXPORT_SYMBOL(adb_unregister); void adb_input(unsigned char *buf, int nb, int autopoll) @@ -582,6 +586,7 @@ adb_try_handler_change(int address, int new_id) mutex_unlock(&adb_handler_mutex); return ret; } +EXPORT_SYMBOL(adb_try_handler_change); int adb_get_infos(int address, int *original_address, int *handler_id) diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c index d61f271..bad1813 100644 --- a/drivers/macintosh/via-cuda.c +++ b/drivers/macintosh/via-cuda.c @@ -379,6 +379,7 @@ cuda_request(struct adb_request *req, void (*done)(struct adb_request *), req->reply_expected = 1; return cuda_write(req); } +EXPORT_SYMBOL(cuda_request); static int cuda_write(struct adb_request *req) @@ -441,6 +442,7 @@ cuda_poll(void) if (cuda_irq) enable_irq(cuda_irq); } +EXPORT_SYMBOL(cuda_poll); static irqreturn_t cuda_interrupt(int irq, void *arg) diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index b841180..bbeb451 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -527,4 +527,5 @@ source "drivers/misc/vmw_vmci/Kconfig" source "drivers/misc/mic/Kconfig" source "drivers/misc/genwqe/Kconfig" source "drivers/misc/echo/Kconfig" +source "drivers/misc/cxl/Kconfig" endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 5497d026..7d5c4cd 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -55,3 +55,4 @@ obj-y += mic/ obj-$(CONFIG_GENWQE) += genwqe/ obj-$(CONFIG_ECHO) += echo/ obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o +obj-$(CONFIG_CXL_BASE) += cxl/ diff --git a/drivers/misc/cxl/Kconfig b/drivers/misc/cxl/Kconfig new file mode 100644 index 0000000..a990b39 --- /dev/null +++ b/drivers/misc/cxl/Kconfig @@ -0,0 +1,25 @@ +# +# IBM Coherent Accelerator (CXL) compatible devices +# + +config CXL_BASE + bool + default n + select PPC_COPRO_BASE + +config CXL + tristate "Support for IBM Coherent Accelerators (CXL)" + depends on PPC_POWERNV && PCI_MSI + select CXL_BASE + default m + help + Select this option to enable driver support for IBM Coherent + Accelerators (CXL). CXL is otherwise known as Coherent Accelerator + Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be + coherently attached to a CPU via an MMU. This driver enables + userspace programs to access these accelerators via /dev/cxl/afuM.N + devices. + + CAPI adapters are found in POWER8 based systems. + + If unsure, say N. diff --git a/drivers/misc/cxl/Makefile b/drivers/misc/cxl/Makefile new file mode 100644 index 0000000..165e98f --- /dev/null +++ b/drivers/misc/cxl/Makefile @@ -0,0 +1,3 @@ +cxl-y += main.o file.o irq.o fault.o native.o context.o sysfs.o debugfs.o pci.o +obj-$(CONFIG_CXL) += cxl.o +obj-$(CONFIG_CXL_BASE) += base.o diff --git a/drivers/misc/cxl/base.c b/drivers/misc/cxl/base.c new file mode 100644 index 0000000..0654ad8 --- /dev/null +++ b/drivers/misc/cxl/base.c @@ -0,0 +1,86 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/module.h> +#include <linux/rcupdate.h> +#include <asm/errno.h> +#include <misc/cxl.h> +#include "cxl.h" + +/* protected by rcu */ +static struct cxl_calls *cxl_calls; + +atomic_t cxl_use_count = ATOMIC_INIT(0); +EXPORT_SYMBOL(cxl_use_count); + +#ifdef CONFIG_CXL_MODULE + +static inline struct cxl_calls *cxl_calls_get(void) +{ + struct cxl_calls *calls = NULL; + + rcu_read_lock(); + calls = rcu_dereference(cxl_calls); + if (calls && !try_module_get(calls->owner)) + calls = NULL; + rcu_read_unlock(); + + return calls; +} + +static inline void cxl_calls_put(struct cxl_calls *calls) +{ + BUG_ON(calls != cxl_calls); + + /* we don't need to rcu this, as we hold a reference to the module */ + module_put(cxl_calls->owner); +} + +#else /* !defined CONFIG_CXL_MODULE */ + +static inline struct cxl_calls *cxl_calls_get(void) +{ + return cxl_calls; +} + +static inline void cxl_calls_put(struct cxl_calls *calls) { } + +#endif /* CONFIG_CXL_MODULE */ + +void cxl_slbia(struct mm_struct *mm) +{ + struct cxl_calls *calls; + + calls = cxl_calls_get(); + if (!calls) + return; + + if (cxl_ctx_in_use()) + calls->cxl_slbia(mm); + + cxl_calls_put(calls); +} + +int register_cxl_calls(struct cxl_calls *calls) +{ + if (cxl_calls) + return -EBUSY; + + rcu_assign_pointer(cxl_calls, calls); + return 0; +} +EXPORT_SYMBOL_GPL(register_cxl_calls); + +void unregister_cxl_calls(struct cxl_calls *calls) +{ + BUG_ON(cxl_calls->owner != calls->owner); + RCU_INIT_POINTER(cxl_calls, NULL); + synchronize_rcu(); +} +EXPORT_SYMBOL_GPL(unregister_cxl_calls); diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c new file mode 100644 index 0000000..cca4721 --- /dev/null +++ b/drivers/misc/cxl/context.c @@ -0,0 +1,193 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/module.h> +#include <linux/kernel.h> +#include <linux/bitmap.h> +#include <linux/sched.h> +#include <linux/pid.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/debugfs.h> +#include <linux/slab.h> +#include <linux/idr.h> +#include <asm/cputable.h> +#include <asm/current.h> +#include <asm/copro.h> + +#include "cxl.h" + +/* + * Allocates space for a CXL context. + */ +struct cxl_context *cxl_context_alloc(void) +{ + return kzalloc(sizeof(struct cxl_context), GFP_KERNEL); +} + +/* + * Initialises a CXL context. + */ +int cxl_context_init(struct cxl_context *ctx, struct cxl_afu *afu, bool master) +{ + int i; + + spin_lock_init(&ctx->sste_lock); + ctx->afu = afu; + ctx->master = master; + ctx->pid = NULL; /* Set in start work ioctl */ + + /* + * Allocate the segment table before we put it in the IDR so that we + * can always access it when dereferenced from IDR. For the same + * reason, the segment table is only destroyed after the context is + * removed from the IDR. Access to this in the IOCTL is protected by + * Linux filesytem symantics (can't IOCTL until open is complete). + */ + i = cxl_alloc_sst(ctx); + if (i) + return i; + + INIT_WORK(&ctx->fault_work, cxl_handle_fault); + + init_waitqueue_head(&ctx->wq); + spin_lock_init(&ctx->lock); + + ctx->irq_bitmap = NULL; + ctx->pending_irq = false; + ctx->pending_fault = false; + ctx->pending_afu_err = false; + + /* + * When we have to destroy all contexts in cxl_context_detach_all() we + * end up with afu_release_irqs() called from inside a + * idr_for_each_entry(). Hence we need to make sure that anything + * dereferenced from this IDR is ok before we allocate the IDR here. + * This clears out the IRQ ranges to ensure this. + */ + for (i = 0; i < CXL_IRQ_RANGES; i++) + ctx->irqs.range[i] = 0; + + mutex_init(&ctx->status_mutex); + + ctx->status = OPENED; + + /* + * Allocating IDR! We better make sure everything's setup that + * dereferences from it. + */ + idr_preload(GFP_KERNEL); + spin_lock(&afu->contexts_lock); + i = idr_alloc(&ctx->afu->contexts_idr, ctx, 0, + ctx->afu->num_procs, GFP_NOWAIT); + spin_unlock(&afu->contexts_lock); + idr_preload_end(); + if (i < 0) + return i; + + ctx->pe = i; + ctx->elem = &ctx->afu->spa[i]; + ctx->pe_inserted = false; + return 0; +} + +/* + * Map a per-context mmio space into the given vma. + */ +int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma) +{ + u64 len = vma->vm_end - vma->vm_start; + len = min(len, ctx->psn_size); + + if (ctx->afu->current_mode == CXL_MODE_DEDICATED) { + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + return vm_iomap_memory(vma, ctx->afu->psn_phys, ctx->afu->adapter->ps_size); + } + + /* make sure there is a valid per process space for this AFU */ + if ((ctx->master && !ctx->afu->psa) || (!ctx->afu->pp_psa)) { + pr_devel("AFU doesn't support mmio space\n"); + return -EINVAL; + } + + /* Can't mmap until the AFU is enabled */ + if (!ctx->afu->enabled) + return -EBUSY; + + pr_devel("%s: mmio physical: %llx pe: %i master:%i\n", __func__, + ctx->psn_phys, ctx->pe , ctx->master); + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + return vm_iomap_memory(vma, ctx->psn_phys, len); +} + +/* + * Detach a context from the hardware. This disables interrupts and doesn't + * return until all outstanding interrupts for this context have completed. The + * hardware should no longer access *ctx after this has returned. + */ +static void __detach_context(struct cxl_context *ctx) +{ + enum cxl_context_status status; + + mutex_lock(&ctx->status_mutex); + status = ctx->status; + ctx->status = CLOSED; + mutex_unlock(&ctx->status_mutex); + if (status != STARTED) + return; + + WARN_ON(cxl_detach_process(ctx)); + afu_release_irqs(ctx); + flush_work(&ctx->fault_work); /* Only needed for dedicated process */ + wake_up_all(&ctx->wq); +} + +/* + * Detach the given context from the AFU. This doesn't actually + * free the context but it should stop the context running in hardware + * (ie. prevent this context from generating any further interrupts + * so that it can be freed). + */ +void cxl_context_detach(struct cxl_context *ctx) +{ + __detach_context(ctx); +} + +/* + * Detach all contexts on the given AFU. + */ +void cxl_context_detach_all(struct cxl_afu *afu) +{ + struct cxl_context *ctx; + int tmp; + + rcu_read_lock(); + idr_for_each_entry(&afu->contexts_idr, ctx, tmp) + /* + * Anything done in here needs to be setup before the IDR is + * created and torn down after the IDR removed + */ + __detach_context(ctx); + rcu_read_unlock(); +} + +void cxl_context_free(struct cxl_context *ctx) +{ + spin_lock(&ctx->afu->contexts_lock); + idr_remove(&ctx->afu->contexts_idr, ctx->pe); + spin_unlock(&ctx->afu->contexts_lock); + synchronize_rcu(); + + free_page((u64)ctx->sstp); + ctx->sstp = NULL; + + put_pid(ctx->pid); + kfree(ctx); +} diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h new file mode 100644 index 0000000..3d2b867 --- /dev/null +++ b/drivers/misc/cxl/cxl.h @@ -0,0 +1,629 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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. + */ + +#ifndef _CXL_H_ +#define _CXL_H_ + +#include <linux/interrupt.h> +#include <linux/semaphore.h> +#include <linux/device.h> +#include <linux/types.h> +#include <linux/cdev.h> +#include <linux/pid.h> +#include <linux/io.h> +#include <linux/pci.h> +#include <asm/cputable.h> +#include <asm/mmu.h> +#include <asm/reg.h> +#include <misc/cxl.h> + +#include <uapi/misc/cxl.h> + +extern uint cxl_verbose; + +#define CXL_TIMEOUT 5 + +/* + * Bump version each time a user API change is made, whether it is + * backwards compatible ot not. + */ +#define CXL_API_VERSION 1 +#define CXL_API_VERSION_COMPATIBLE 1 + +/* + * Opaque types to avoid accidentally passing registers for the wrong MMIO + * + * At the end of the day, I'm not married to using typedef here, but it might + * (and has!) help avoid bugs like mixing up CXL_PSL_CtxTime and + * CXL_PSL_CtxTime_An, or calling cxl_p1n_write instead of cxl_p1_write. + * + * I'm quite happy if these are changed back to #defines before upstreaming, it + * should be little more than a regexp search+replace operation in this file. + */ +typedef struct { + const int x; +} cxl_p1_reg_t; +typedef struct { + const int x; +} cxl_p1n_reg_t; +typedef struct { + const int x; +} cxl_p2n_reg_t; +#define cxl_reg_off(reg) \ + (reg.x) + +/* Memory maps. Ref CXL Appendix A */ + +/* PSL Privilege 1 Memory Map */ +/* Configuration and Control area */ +static const cxl_p1_reg_t CXL_PSL_CtxTime = {0x0000}; +static const cxl_p1_reg_t CXL_PSL_ErrIVTE = {0x0008}; +static const cxl_p1_reg_t CXL_PSL_KEY1 = {0x0010}; +static const cxl_p1_reg_t CXL_PSL_KEY2 = {0x0018}; +static const cxl_p1_reg_t CXL_PSL_Control = {0x0020}; +/* Downloading */ +static const cxl_p1_reg_t CXL_PSL_DLCNTL = {0x0060}; +static const cxl_p1_reg_t CXL_PSL_DLADDR = {0x0068}; + +/* PSL Lookaside Buffer Management Area */ +static const cxl_p1_reg_t CXL_PSL_LBISEL = {0x0080}; +static const cxl_p1_reg_t CXL_PSL_SLBIE = {0x0088}; +static const cxl_p1_reg_t CXL_PSL_SLBIA = {0x0090}; +static const cxl_p1_reg_t CXL_PSL_TLBIE = {0x00A0}; +static const cxl_p1_reg_t CXL_PSL_TLBIA = {0x00A8}; +static const cxl_p1_reg_t CXL_PSL_AFUSEL = {0x00B0}; + +/* 0x00C0:7EFF Implementation dependent area */ +static const cxl_p1_reg_t CXL_PSL_FIR1 = {0x0100}; +static const cxl_p1_reg_t CXL_PSL_FIR2 = {0x0108}; +static const cxl_p1_reg_t CXL_PSL_VERSION = {0x0118}; +static const cxl_p1_reg_t CXL_PSL_RESLCKTO = {0x0128}; +static const cxl_p1_reg_t CXL_PSL_FIR_CNTL = {0x0148}; +static const cxl_p1_reg_t CXL_PSL_DSNDCTL = {0x0150}; +static const cxl_p1_reg_t CXL_PSL_SNWRALLOC = {0x0158}; +static const cxl_p1_reg_t CXL_PSL_TRACE = {0x0170}; +/* 0x7F00:7FFF Reserved PCIe MSI-X Pending Bit Array area */ +/* 0x8000:FFFF Reserved PCIe MSI-X Table Area */ + +/* PSL Slice Privilege 1 Memory Map */ +/* Configuration Area */ +static const cxl_p1n_reg_t CXL_PSL_SR_An = {0x00}; +static const cxl_p1n_reg_t CXL_PSL_LPID_An = {0x08}; +static const cxl_p1n_reg_t CXL_PSL_AMBAR_An = {0x10}; +static const cxl_p1n_reg_t CXL_PSL_SPOffset_An = {0x18}; +static const cxl_p1n_reg_t CXL_PSL_ID_An = {0x20}; +static const cxl_p1n_reg_t CXL_PSL_SERR_An = {0x28}; +/* Memory Management and Lookaside Buffer Management */ +static const cxl_p1n_reg_t CXL_PSL_SDR_An = {0x30}; +static const cxl_p1n_reg_t CXL_PSL_AMOR_An = {0x38}; +/* Pointer Area */ +static const cxl_p1n_reg_t CXL_HAURP_An = {0x80}; +static const cxl_p1n_reg_t CXL_PSL_SPAP_An = {0x88}; +static const cxl_p1n_reg_t CXL_PSL_LLCMD_An = {0x90}; +/* Control Area */ +static const cxl_p1n_reg_t CXL_PSL_SCNTL_An = {0xA0}; +static const cxl_p1n_reg_t CXL_PSL_CtxTime_An = {0xA8}; +static const cxl_p1n_reg_t CXL_PSL_IVTE_Offset_An = {0xB0}; +static const cxl_p1n_reg_t CXL_PSL_IVTE_Limit_An = {0xB8}; +/* 0xC0:FF Implementation Dependent Area */ +static const cxl_p1n_reg_t CXL_PSL_FIR_SLICE_An = {0xC0}; +static const cxl_p1n_reg_t CXL_AFU_DEBUG_An = {0xC8}; +static const cxl_p1n_reg_t CXL_PSL_APCALLOC_A = {0xD0}; +static const cxl_p1n_reg_t CXL_PSL_COALLOC_A = {0xD8}; +static const cxl_p1n_reg_t CXL_PSL_RXCTL_A = {0xE0}; +static const cxl_p1n_reg_t CXL_PSL_SLICE_TRACE = {0xE8}; + +/* PSL Slice Privilege 2 Memory Map */ +/* Configuration and Control Area */ +static const cxl_p2n_reg_t CXL_PSL_PID_TID_An = {0x000}; +static const cxl_p2n_reg_t CXL_CSRP_An = {0x008}; +static const cxl_p2n_reg_t CXL_AURP0_An = {0x010}; +static const cxl_p2n_reg_t CXL_AURP1_An = {0x018}; +static const cxl_p2n_reg_t CXL_SSTP0_An = {0x020}; +static const cxl_p2n_reg_t CXL_SSTP1_An = {0x028}; +static const cxl_p2n_reg_t CXL_PSL_AMR_An = {0x030}; +/* Segment Lookaside Buffer Management */ +static const cxl_p2n_reg_t CXL_SLBIE_An = {0x040}; +static const cxl_p2n_reg_t CXL_SLBIA_An = {0x048}; +static const cxl_p2n_reg_t CXL_SLBI_Select_An = {0x050}; +/* Interrupt Registers */ +static const cxl_p2n_reg_t CXL_PSL_DSISR_An = {0x060}; +static const cxl_p2n_reg_t CXL_PSL_DAR_An = {0x068}; +static const cxl_p2n_reg_t CXL_PSL_DSR_An = {0x070}; +static const cxl_p2n_reg_t CXL_PSL_TFC_An = {0x078}; +static const cxl_p2n_reg_t CXL_PSL_PEHandle_An = {0x080}; +static const cxl_p2n_reg_t CXL_PSL_ErrStat_An = {0x088}; +/* AFU Registers */ +static const cxl_p2n_reg_t CXL_AFU_Cntl_An = {0x090}; +static const cxl_p2n_reg_t CXL_AFU_ERR_An = {0x098}; +/* Work Element Descriptor */ +static const cxl_p2n_reg_t CXL_PSL_WED_An = {0x0A0}; +/* 0x0C0:FFF Implementation Dependent Area */ + +#define CXL_PSL_SPAP_Addr 0x0ffffffffffff000ULL +#define CXL_PSL_SPAP_Size 0x0000000000000ff0ULL +#define CXL_PSL_SPAP_Size_Shift 4 +#define CXL_PSL_SPAP_V 0x0000000000000001ULL + +/****** CXL_PSL_DLCNTL *****************************************************/ +#define CXL_PSL_DLCNTL_D (0x1ull << (63-28)) +#define CXL_PSL_DLCNTL_C (0x1ull << (63-29)) +#define CXL_PSL_DLCNTL_E (0x1ull << (63-30)) +#define CXL_PSL_DLCNTL_S (0x1ull << (63-31)) +#define CXL_PSL_DLCNTL_CE (CXL_PSL_DLCNTL_C | CXL_PSL_DLCNTL_E) +#define CXL_PSL_DLCNTL_DCES (CXL_PSL_DLCNTL_D | CXL_PSL_DLCNTL_CE | CXL_PSL_DLCNTL_S) + +/****** CXL_PSL_SR_An ******************************************************/ +#define CXL_PSL_SR_An_SF MSR_SF /* 64bit */ +#define CXL_PSL_SR_An_TA (1ull << (63-1)) /* Tags active, GA1: 0 */ +#define CXL_PSL_SR_An_HV MSR_HV /* Hypervisor, GA1: 0 */ +#define CXL_PSL_SR_An_PR MSR_PR /* Problem state, GA1: 1 */ +#define CXL_PSL_SR_An_ISL (1ull << (63-53)) /* Ignore Segment Large Page */ +#define CXL_PSL_SR_An_TC (1ull << (63-54)) /* Page Table secondary hash */ +#define CXL_PSL_SR_An_US (1ull << (63-56)) /* User state, GA1: X */ +#define CXL_PSL_SR_An_SC (1ull << (63-58)) /* Segment Table secondary hash */ +#define CXL_PSL_SR_An_R MSR_DR /* Relocate, GA1: 1 */ +#define CXL_PSL_SR_An_MP (1ull << (63-62)) /* Master Process */ +#define CXL_PSL_SR_An_LE (1ull << (63-63)) /* Little Endian */ + +/****** CXL_PSL_LLCMD_An ****************************************************/ +#define CXL_LLCMD_TERMINATE 0x0001000000000000ULL +#define CXL_LLCMD_REMOVE 0x0002000000000000ULL +#define CXL_LLCMD_SUSPEND 0x0003000000000000ULL +#define CXL_LLCMD_RESUME 0x0004000000000000ULL +#define CXL_LLCMD_ADD 0x0005000000000000ULL +#define CXL_LLCMD_UPDATE 0x0006000000000000ULL +#define CXL_LLCMD_HANDLE_MASK 0x000000000000ffffULL + +/****** CXL_PSL_ID_An ****************************************************/ +#define CXL_PSL_ID_An_F (1ull << (63-31)) +#define CXL_PSL_ID_An_L (1ull << (63-30)) + +/****** CXL_PSL_SCNTL_An ****************************************************/ +#define CXL_PSL_SCNTL_An_CR (0x1ull << (63-15)) +/* Programming Modes: */ +#define CXL_PSL_SCNTL_An_PM_MASK (0xffffull << (63-31)) +#define CXL_PSL_SCNTL_An_PM_Shared (0x0000ull << (63-31)) +#define CXL_PSL_SCNTL_An_PM_OS (0x0001ull << (63-31)) +#define CXL_PSL_SCNTL_An_PM_Process (0x0002ull << (63-31)) +#define CXL_PSL_SCNTL_An_PM_AFU (0x0004ull << (63-31)) +#define CXL_PSL_SCNTL_An_PM_AFU_PBT (0x0104ull << (63-31)) +/* Purge Status (ro) */ +#define CXL_PSL_SCNTL_An_Ps_MASK (0x3ull << (63-39)) +#define CXL_PSL_SCNTL_An_Ps_Pending (0x1ull << (63-39)) +#define CXL_PSL_SCNTL_An_Ps_Complete (0x3ull << (63-39)) +/* Purge */ +#define CXL_PSL_SCNTL_An_Pc (0x1ull << (63-48)) +/* Suspend Status (ro) */ +#define CXL_PSL_SCNTL_An_Ss_MASK (0x3ull << (63-55)) +#define CXL_PSL_SCNTL_An_Ss_Pending (0x1ull << (63-55)) +#define CXL_PSL_SCNTL_An_Ss_Complete (0x3ull << (63-55)) +/* Suspend Control */ +#define CXL_PSL_SCNTL_An_Sc (0x1ull << (63-63)) + +/* AFU Slice Enable Status (ro) */ +#define CXL_AFU_Cntl_An_ES_MASK (0x7ull << (63-2)) +#define CXL_AFU_Cntl_An_ES_Disabled (0x0ull << (63-2)) +#define CXL_AFU_Cntl_An_ES_Enabled (0x4ull << (63-2)) +/* AFU Slice Enable */ +#define CXL_AFU_Cntl_An_E (0x1ull << (63-3)) +/* AFU Slice Reset status (ro) */ +#define CXL_AFU_Cntl_An_RS_MASK (0x3ull << (63-5)) +#define CXL_AFU_Cntl_An_RS_Pending (0x1ull << (63-5)) +#define CXL_AFU_Cntl_An_RS_Complete (0x2ull << (63-5)) +/* AFU Slice Reset */ +#define CXL_AFU_Cntl_An_RA (0x1ull << (63-7)) + +/****** CXL_SSTP0/1_An ******************************************************/ +/* These top bits are for the segment that CONTAINS the segment table */ +#define CXL_SSTP0_An_B_SHIFT SLB_VSID_SSIZE_SHIFT +#define CXL_SSTP0_An_KS (1ull << (63-2)) +#define CXL_SSTP0_An_KP (1ull << (63-3)) +#define CXL_SSTP0_An_N (1ull << (63-4)) +#define CXL_SSTP0_An_L (1ull << (63-5)) +#define CXL_SSTP0_An_C (1ull << (63-6)) +#define CXL_SSTP0_An_TA (1ull << (63-7)) +#define CXL_SSTP0_An_LP_SHIFT (63-9) /* 2 Bits */ +/* And finally, the virtual address & size of the segment table: */ +#define CXL_SSTP0_An_SegTableSize_SHIFT (63-31) /* 12 Bits */ +#define CXL_SSTP0_An_SegTableSize_MASK \ + (((1ull << 12) - 1) << CXL_SSTP0_An_SegTableSize_SHIFT) +#define CXL_SSTP0_An_STVA_U_MASK ((1ull << (63-49))-1) +#define CXL_SSTP1_An_STVA_L_MASK (~((1ull << (63-55))-1)) +#define CXL_SSTP1_An_V (1ull << (63-63)) + +/****** CXL_PSL_SLBIE_[An] **************************************************/ +/* write: */ +#define CXL_SLBIE_C PPC_BIT(36) /* Class */ +#define CXL_SLBIE_SS PPC_BITMASK(37, 38) /* Segment Size */ +#define CXL_SLBIE_SS_SHIFT PPC_BITLSHIFT(38) +#define CXL_SLBIE_TA PPC_BIT(38) /* Tags Active */ +/* read: */ +#define CXL_SLBIE_MAX PPC_BITMASK(24, 31) +#define CXL_SLBIE_PENDING PPC_BITMASK(56, 63) + +/****** Common to all CXL_TLBIA/SLBIA_[An] **********************************/ +#define CXL_TLB_SLB_P (1ull) /* Pending (read) */ + +/****** Common to all CXL_TLB/SLB_IA/IE_[An] registers **********************/ +#define CXL_TLB_SLB_IQ_ALL (0ull) /* Inv qualifier */ +#define CXL_TLB_SLB_IQ_LPID (1ull) /* Inv qualifier */ +#define CXL_TLB_SLB_IQ_LPIDPID (3ull) /* Inv qualifier */ + +/****** CXL_PSL_AFUSEL ******************************************************/ +#define CXL_PSL_AFUSEL_A (1ull << (63-55)) /* Adapter wide invalidates affect all AFUs */ + +/****** CXL_PSL_DSISR_An ****************************************************/ +#define CXL_PSL_DSISR_An_DS (1ull << (63-0)) /* Segment not found */ +#define CXL_PSL_DSISR_An_DM (1ull << (63-1)) /* PTE not found (See also: M) or protection fault */ +#define CXL_PSL_DSISR_An_ST (1ull << (63-2)) /* Segment Table PTE not found */ +#define CXL_PSL_DSISR_An_UR (1ull << (63-3)) /* AURP PTE not found */ +#define CXL_PSL_DSISR_TRANS (CXL_PSL_DSISR_An_DS | CXL_PSL_DSISR_An_DM | CXL_PSL_DSISR_An_ST | CXL_PSL_DSISR_An_UR) +#define CXL_PSL_DSISR_An_PE (1ull << (63-4)) /* PSL Error (implementation specific) */ +#define CXL_PSL_DSISR_An_AE (1ull << (63-5)) /* AFU Error */ +#define CXL_PSL_DSISR_An_OC (1ull << (63-6)) /* OS Context Warning */ +/* NOTE: Bits 32:63 are undefined if DSISR[DS] = 1 */ +#define CXL_PSL_DSISR_An_M DSISR_NOHPTE /* PTE not found */ +#define CXL_PSL_DSISR_An_P DSISR_PROTFAULT /* Storage protection violation */ +#define CXL_PSL_DSISR_An_A (1ull << (63-37)) /* AFU lock access to write through or cache inhibited storage */ +#define CXL_PSL_DSISR_An_S DSISR_ISSTORE /* Access was afu_wr or afu_zero */ +#define CXL_PSL_DSISR_An_K DSISR_KEYFAULT /* Access not permitted by virtual page class key protection */ + +/****** CXL_PSL_TFC_An ******************************************************/ +#define CXL_PSL_TFC_An_A (1ull << (63-28)) /* Acknowledge non-translation fault */ +#define CXL_PSL_TFC_An_C (1ull << (63-29)) /* Continue (abort transaction) */ +#define CXL_PSL_TFC_An_AE (1ull << (63-30)) /* Restart PSL with address error */ +#define CXL_PSL_TFC_An_R (1ull << (63-31)) /* Restart PSL transaction */ + +/* cxl_process_element->software_status */ +#define CXL_PE_SOFTWARE_STATE_V (1ul << (31 - 0)) /* Valid */ +#define CXL_PE_SOFTWARE_STATE_C (1ul << (31 - 29)) /* Complete */ +#define CXL_PE_SOFTWARE_STATE_S (1ul << (31 - 30)) /* Suspend */ +#define CXL_PE_SOFTWARE_STATE_T (1ul << (31 - 31)) /* Terminate */ + +/* SPA->sw_command_status */ +#define CXL_SPA_SW_CMD_MASK 0xffff000000000000ULL +#define CXL_SPA_SW_CMD_TERMINATE 0x0001000000000000ULL +#define CXL_SPA_SW_CMD_REMOVE 0x0002000000000000ULL +#define CXL_SPA_SW_CMD_SUSPEND 0x0003000000000000ULL +#define CXL_SPA_SW_CMD_RESUME 0x0004000000000000ULL +#define CXL_SPA_SW_CMD_ADD 0x0005000000000000ULL +#define CXL_SPA_SW_CMD_UPDATE 0x0006000000000000ULL +#define CXL_SPA_SW_STATE_MASK 0x0000ffff00000000ULL +#define CXL_SPA_SW_STATE_TERMINATED 0x0000000100000000ULL +#define CXL_SPA_SW_STATE_REMOVED 0x0000000200000000ULL +#define CXL_SPA_SW_STATE_SUSPENDED 0x0000000300000000ULL +#define CXL_SPA_SW_STATE_RESUMED 0x0000000400000000ULL +#define CXL_SPA_SW_STATE_ADDED 0x0000000500000000ULL +#define CXL_SPA_SW_STATE_UPDATED 0x0000000600000000ULL +#define CXL_SPA_SW_PSL_ID_MASK 0x00000000ffff0000ULL +#define CXL_SPA_SW_LINK_MASK 0x000000000000ffffULL + +#define CXL_MAX_SLICES 4 +#define MAX_AFU_MMIO_REGS 3 + +#define CXL_MODE_DEDICATED 0x1 +#define CXL_MODE_DIRECTED 0x2 +#define CXL_MODE_TIME_SLICED 0x4 +#define CXL_SUPPORTED_MODES (CXL_MODE_DEDICATED | CXL_MODE_DIRECTED) + +enum cxl_context_status { + CLOSED, + OPENED, + STARTED +}; + +enum prefault_modes { + CXL_PREFAULT_NONE, + CXL_PREFAULT_WED, + CXL_PREFAULT_ALL, +}; + +struct cxl_sste { + __be64 esid_data; + __be64 vsid_data; +}; + +#define to_cxl_adapter(d) container_of(d, struct cxl, dev) +#define to_cxl_afu(d) container_of(d, struct cxl_afu, dev) + +struct cxl_afu { + irq_hw_number_t psl_hwirq; + irq_hw_number_t serr_hwirq; + unsigned int serr_virq; + void __iomem *p1n_mmio; + void __iomem *p2n_mmio; + phys_addr_t psn_phys; + u64 pp_offset; + u64 pp_size; + void __iomem *afu_desc_mmio; + struct cxl *adapter; + struct device dev; + struct cdev afu_cdev_s, afu_cdev_m, afu_cdev_d; + struct device *chardev_s, *chardev_m, *chardev_d; + struct idr contexts_idr; + struct dentry *debugfs; + spinlock_t contexts_lock; + struct mutex spa_mutex; + spinlock_t afu_cntl_lock; + + /* + * Only the first part of the SPA is used for the process element + * linked list. The only other part that software needs to worry about + * is sw_command_status, which we store a separate pointer to. + * Everything else in the SPA is only used by hardware + */ + struct cxl_process_element *spa; + __be64 *sw_command_status; + unsigned int spa_size; + int spa_order; + int spa_max_procs; + unsigned int psl_virq; + + int pp_irqs; + int irqs_max; + int num_procs; + int max_procs_virtualised; + int slice; + int modes_supported; + int current_mode; + enum prefault_modes prefault_mode; + bool psa; + bool pp_psa; + bool enabled; +}; + +/* + * This is a cxl context. If the PSL is in dedicated mode, there will be one + * of these per AFU. If in AFU directed there can be lots of these. + */ +struct cxl_context { + struct cxl_afu *afu; + + /* Problem state MMIO */ + phys_addr_t psn_phys; + u64 psn_size; + + spinlock_t sste_lock; /* Protects segment table entries */ + struct cxl_sste *sstp; + u64 sstp0, sstp1; + unsigned int sst_size, sst_lru; + + wait_queue_head_t wq; + struct pid *pid; + spinlock_t lock; /* Protects pending_irq_mask, pending_fault and fault_addr */ + /* Only used in PR mode */ + u64 process_token; + + unsigned long *irq_bitmap; /* Accessed from IRQ context */ + struct cxl_irq_ranges irqs; + u64 fault_addr; + u64 fault_dsisr; + u64 afu_err; + + /* + * This status and it's lock pretects start and detach context + * from racing. It also prevents detach from racing with + * itself + */ + enum cxl_context_status status; + struct mutex status_mutex; + + + /* XXX: Is it possible to need multiple work items at once? */ + struct work_struct fault_work; + u64 dsisr; + u64 dar; + + struct cxl_process_element *elem; + + int pe; /* process element handle */ + u32 irq_count; + bool pe_inserted; + bool master; + bool kernel; + bool pending_irq; + bool pending_fault; + bool pending_afu_err; +}; + +struct cxl { + void __iomem *p1_mmio; + void __iomem *p2_mmio; + irq_hw_number_t err_hwirq; + unsigned int err_virq; + spinlock_t afu_list_lock; + struct cxl_afu *afu[CXL_MAX_SLICES]; + struct device dev; + struct dentry *trace; + struct dentry *psl_err_chk; + struct dentry *debugfs; + struct bin_attribute cxl_attr; + int adapter_num; + int user_irqs; + u64 afu_desc_off; + u64 afu_desc_size; + u64 ps_off; + u64 ps_size; + u16 psl_rev; + u16 base_image; + u8 vsec_status; + u8 caia_major; + u8 caia_minor; + u8 slices; + bool user_image_loaded; + bool perst_loads_image; + bool perst_select_user; +}; + +int cxl_alloc_one_irq(struct cxl *adapter); +void cxl_release_one_irq(struct cxl *adapter, int hwirq); +int cxl_alloc_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter, unsigned int num); +void cxl_release_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter); +int cxl_setup_irq(struct cxl *adapter, unsigned int hwirq, unsigned int virq); + +/* common == phyp + powernv */ +struct cxl_process_element_common { + __be32 tid; + __be32 pid; + __be64 csrp; + __be64 aurp0; + __be64 aurp1; + __be64 sstp0; + __be64 sstp1; + __be64 amr; + u8 reserved3[4]; + __be64 wed; +} __packed; + +/* just powernv */ +struct cxl_process_element { + __be64 sr; + __be64 SPOffset; + __be64 sdr; + __be64 haurp; + __be32 ctxtime; + __be16 ivte_offsets[4]; + __be16 ivte_ranges[4]; + __be32 lpid; + struct cxl_process_element_common common; + __be32 software_state; +} __packed; + +static inline void __iomem *_cxl_p1_addr(struct cxl *cxl, cxl_p1_reg_t reg) +{ + WARN_ON(!cpu_has_feature(CPU_FTR_HVMODE)); + return cxl->p1_mmio + cxl_reg_off(reg); +} + +#define cxl_p1_write(cxl, reg, val) \ + out_be64(_cxl_p1_addr(cxl, reg), val) +#define cxl_p1_read(cxl, reg) \ + in_be64(_cxl_p1_addr(cxl, reg)) + +static inline void __iomem *_cxl_p1n_addr(struct cxl_afu *afu, cxl_p1n_reg_t reg) +{ + WARN_ON(!cpu_has_feature(CPU_FTR_HVMODE)); + return afu->p1n_mmio + cxl_reg_off(reg); +} + +#define cxl_p1n_write(afu, reg, val) \ + out_be64(_cxl_p1n_addr(afu, reg), val) +#define cxl_p1n_read(afu, reg) \ + in_be64(_cxl_p1n_addr(afu, reg)) + +static inline void __iomem *_cxl_p2n_addr(struct cxl_afu *afu, cxl_p2n_reg_t reg) +{ + return afu->p2n_mmio + cxl_reg_off(reg); +} + +#define cxl_p2n_write(afu, reg, val) \ + out_be64(_cxl_p2n_addr(afu, reg), val) +#define cxl_p2n_read(afu, reg) \ + in_be64(_cxl_p2n_addr(afu, reg)) + +struct cxl_calls { + void (*cxl_slbia)(struct mm_struct *mm); + struct module *owner; +}; +int register_cxl_calls(struct cxl_calls *calls); +void unregister_cxl_calls(struct cxl_calls *calls); + +int cxl_alloc_adapter_nr(struct cxl *adapter); +void cxl_remove_adapter_nr(struct cxl *adapter); + +int cxl_file_init(void); +void cxl_file_exit(void); +int cxl_register_adapter(struct cxl *adapter); +int cxl_register_afu(struct cxl_afu *afu); +int cxl_chardev_d_afu_add(struct cxl_afu *afu); +int cxl_chardev_m_afu_add(struct cxl_afu *afu); +int cxl_chardev_s_afu_add(struct cxl_afu *afu); +void cxl_chardev_afu_remove(struct cxl_afu *afu); + +void cxl_context_detach_all(struct cxl_afu *afu); +void cxl_context_free(struct cxl_context *ctx); +void cxl_context_detach(struct cxl_context *ctx); + +int cxl_sysfs_adapter_add(struct cxl *adapter); +void cxl_sysfs_adapter_remove(struct cxl *adapter); +int cxl_sysfs_afu_add(struct cxl_afu *afu); +void cxl_sysfs_afu_remove(struct cxl_afu *afu); +int cxl_sysfs_afu_m_add(struct cxl_afu *afu); +void cxl_sysfs_afu_m_remove(struct cxl_afu *afu); + +int cxl_afu_activate_mode(struct cxl_afu *afu, int mode); +int _cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode); +int cxl_afu_deactivate_mode(struct cxl_afu *afu); +int cxl_afu_select_best_mode(struct cxl_afu *afu); + +unsigned int cxl_map_irq(struct cxl *adapter, irq_hw_number_t hwirq, + irq_handler_t handler, void *cookie); +void cxl_unmap_irq(unsigned int virq, void *cookie); +int cxl_register_psl_irq(struct cxl_afu *afu); +void cxl_release_psl_irq(struct cxl_afu *afu); +int cxl_register_psl_err_irq(struct cxl *adapter); +void cxl_release_psl_err_irq(struct cxl *adapter); +int cxl_register_serr_irq(struct cxl_afu *afu); +void cxl_release_serr_irq(struct cxl_afu *afu); +int afu_register_irqs(struct cxl_context *ctx, u32 count); +void afu_release_irqs(struct cxl_context *ctx); +irqreturn_t cxl_slice_irq_err(int irq, void *data); + +int cxl_debugfs_init(void); +void cxl_debugfs_exit(void); +int cxl_debugfs_adapter_add(struct cxl *adapter); +void cxl_debugfs_adapter_remove(struct cxl *adapter); +int cxl_debugfs_afu_add(struct cxl_afu *afu); +void cxl_debugfs_afu_remove(struct cxl_afu *afu); + +void cxl_handle_fault(struct work_struct *work); +void cxl_prefault(struct cxl_context *ctx, u64 wed); + +struct cxl *get_cxl_adapter(int num); +int cxl_alloc_sst(struct cxl_context *ctx); + +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); +void cxl_context_free(struct cxl_context *ctx); +int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma); + +/* This matches the layout of the H_COLLECT_CA_INT_INFO retbuf */ +struct cxl_irq_info { + u64 dsisr; + u64 dar; + u64 dsr; + u32 pid; + u32 tid; + u64 afu_err; + u64 errstat; + u64 padding[3]; /* to match the expected retbuf size for plpar_hcall9 */ +}; + +int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, + u64 amr); +int cxl_detach_process(struct cxl_context *ctx); + +int cxl_get_irq(struct cxl_context *ctx, struct cxl_irq_info *info); +int cxl_ack_irq(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask); + +int cxl_check_error(struct cxl_afu *afu); +int cxl_afu_slbia(struct cxl_afu *afu); +int cxl_tlb_slb_invalidate(struct cxl *adapter); +int cxl_afu_disable(struct cxl_afu *afu); +int cxl_afu_reset(struct cxl_afu *afu); +int cxl_psl_purge(struct cxl_afu *afu); + +void cxl_stop_trace(struct cxl *cxl); + +extern struct pci_driver cxl_pci_driver; + +#endif diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c new file mode 100644 index 0000000..825c412 --- /dev/null +++ b/drivers/misc/cxl/debugfs.c @@ -0,0 +1,132 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/debugfs.h> +#include <linux/kernel.h> +#include <linux/slab.h> + +#include "cxl.h" + +static struct dentry *cxl_debugfs; + +void cxl_stop_trace(struct cxl *adapter) +{ + int slice; + + /* Stop the trace */ + cxl_p1_write(adapter, CXL_PSL_TRACE, 0x8000000000000017LL); + + /* Stop the slice traces */ + spin_lock(&adapter->afu_list_lock); + for (slice = 0; slice < adapter->slices; slice++) { + if (adapter->afu[slice]) + cxl_p1n_write(adapter->afu[slice], CXL_PSL_SLICE_TRACE, 0x8000000000000000LL); + } + spin_unlock(&adapter->afu_list_lock); +} + +/* Helpers to export CXL mmaped IO registers via debugfs */ +static int debugfs_io_u64_get(void *data, u64 *val) +{ + *val = in_be64((u64 __iomem *)data); + return 0; +} + +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"); + +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 *)value, &fops_io_x64); +} + +int cxl_debugfs_adapter_add(struct cxl *adapter) +{ + struct dentry *dir; + char buf[32]; + + if (!cxl_debugfs) + return -ENODEV; + + snprintf(buf, 32, "card%i", adapter->adapter_num); + dir = debugfs_create_dir(buf, cxl_debugfs); + if (IS_ERR(dir)) + return PTR_ERR(dir); + adapter->debugfs = dir; + + debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR1)); + debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR2)); + debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR_CNTL)); + debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE)); + + debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE)); + + return 0; +} + +void cxl_debugfs_adapter_remove(struct cxl *adapter) +{ + debugfs_remove_recursive(adapter->debugfs); +} + +int cxl_debugfs_afu_add(struct cxl_afu *afu) +{ + struct dentry *dir; + char buf[32]; + + if (!afu->adapter->debugfs) + return -ENODEV; + + snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice); + dir = debugfs_create_dir(buf, afu->adapter->debugfs); + if (IS_ERR(dir)) + return PTR_ERR(dir); + afu->debugfs = dir; + + debugfs_create_io_x64("fir", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_FIR_SLICE_An)); + debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An)); + debugfs_create_io_x64("afu_debug", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_AFU_DEBUG_An)); + debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An)); + + debugfs_create_io_x64("dsisr", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DSISR_An)); + debugfs_create_io_x64("dar", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DAR_An)); + debugfs_create_io_x64("sstp0", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP0_An)); + debugfs_create_io_x64("sstp1", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP1_An)); + debugfs_create_io_x64("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An)); + + debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE)); + + return 0; +} + +void cxl_debugfs_afu_remove(struct cxl_afu *afu) +{ + debugfs_remove_recursive(afu->debugfs); +} + +int __init cxl_debugfs_init(void) +{ + struct dentry *ent; + ent = debugfs_create_dir("cxl", NULL); + if (IS_ERR(ent)) + return PTR_ERR(ent); + cxl_debugfs = ent; + + return 0; +} + +void cxl_debugfs_exit(void) +{ + debugfs_remove_recursive(cxl_debugfs); +} diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c new file mode 100644 index 0000000..69506eb --- /dev/null +++ b/drivers/misc/cxl/fault.c @@ -0,0 +1,291 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/workqueue.h> +#include <linux/sched.h> +#include <linux/pid.h> +#include <linux/mm.h> +#include <linux/moduleparam.h> + +#undef MODULE_PARAM_PREFIX +#define MODULE_PARAM_PREFIX "cxl" "." +#include <asm/current.h> +#include <asm/copro.h> +#include <asm/mmu.h> + +#include "cxl.h" + +static struct cxl_sste* find_free_sste(struct cxl_sste *primary_group, + bool sec_hash, + struct cxl_sste *secondary_group, + unsigned int *lru) +{ + unsigned int i, entry; + struct cxl_sste *sste, *group = primary_group; + + for (i = 0; i < 2; i++) { + for (entry = 0; entry < 8; entry++) { + sste = group + entry; + if (!(be64_to_cpu(sste->esid_data) & SLB_ESID_V)) + return sste; + } + if (!sec_hash) + break; + group = secondary_group; + } + /* Nothing free, select an entry to cast out */ + if (sec_hash && (*lru & 0x8)) + sste = secondary_group + (*lru & 0x7); + else + sste = primary_group + (*lru & 0x7); + *lru = (*lru + 1) & 0xf; + + return sste; +} + +static void cxl_load_segment(struct cxl_context *ctx, struct copro_slb *slb) +{ + /* mask is the group index, we search primary and secondary here. */ + unsigned int mask = (ctx->sst_size >> 7)-1; /* SSTP0[SegTableSize] */ + bool sec_hash = 1; + struct cxl_sste *sste; + unsigned int hash; + unsigned long flags; + + + sec_hash = !!(cxl_p1n_read(ctx->afu, CXL_PSL_SR_An) & CXL_PSL_SR_An_SC); + + if (slb->vsid & SLB_VSID_B_1T) + hash = (slb->esid >> SID_SHIFT_1T) & mask; + else /* 256M */ + hash = (slb->esid >> SID_SHIFT) & mask; + + spin_lock_irqsave(&ctx->sste_lock, flags); + sste = find_free_sste(ctx->sstp + (hash << 3), sec_hash, + ctx->sstp + ((~hash & mask) << 3), &ctx->sst_lru); + + pr_devel("CXL Populating SST[%li]: %#llx %#llx\n", + sste - ctx->sstp, slb->vsid, slb->esid); + + sste->vsid_data = cpu_to_be64(slb->vsid); + sste->esid_data = cpu_to_be64(slb->esid); + spin_unlock_irqrestore(&ctx->sste_lock, flags); +} + +static int cxl_fault_segment(struct cxl_context *ctx, struct mm_struct *mm, + u64 ea) +{ + struct copro_slb slb = {0,0}; + int rc; + + if (!(rc = copro_calculate_slb(mm, ea, &slb))) { + cxl_load_segment(ctx, &slb); + } + + return rc; +} + +static void cxl_ack_ae(struct cxl_context *ctx) +{ + unsigned long flags; + + cxl_ack_irq(ctx, CXL_PSL_TFC_An_AE, 0); + + spin_lock_irqsave(&ctx->lock, flags); + ctx->pending_fault = true; + ctx->fault_addr = ctx->dar; + ctx->fault_dsisr = ctx->dsisr; + spin_unlock_irqrestore(&ctx->lock, flags); + + wake_up_all(&ctx->wq); +} + +static int cxl_handle_segment_miss(struct cxl_context *ctx, + struct mm_struct *mm, u64 ea) +{ + int rc; + + pr_devel("CXL interrupt: Segment fault pe: %i ea: %#llx\n", ctx->pe, ea); + + if ((rc = cxl_fault_segment(ctx, mm, ea))) + cxl_ack_ae(ctx); + else { + + mb(); /* Order seg table write to TFC MMIO write */ + cxl_ack_irq(ctx, CXL_PSL_TFC_An_R, 0); + } + + return IRQ_HANDLED; +} + +static void cxl_handle_page_fault(struct cxl_context *ctx, + struct mm_struct *mm, u64 dsisr, u64 dar) +{ + unsigned flt = 0; + int result; + unsigned long access, flags; + + if ((result = copro_handle_mm_fault(mm, dar, dsisr, &flt))) { + pr_devel("copro_handle_mm_fault failed: %#x\n", result); + return cxl_ack_ae(ctx); + } + + /* + * update_mmu_cache() will not have loaded the hash since current->trap + * is not a 0x400 or 0x300, so just call hash_page_mm() here. + */ + access = _PAGE_PRESENT; + if (dsisr & CXL_PSL_DSISR_An_S) + access |= _PAGE_RW; + if ((!ctx->kernel) || ~(dar & (1ULL << 63))) + access |= _PAGE_USER; + local_irq_save(flags); + hash_page_mm(mm, dar, access, 0x300); + local_irq_restore(flags); + + pr_devel("Page fault successfully handled for pe: %i!\n", ctx->pe); + cxl_ack_irq(ctx, CXL_PSL_TFC_An_R, 0); +} + +void cxl_handle_fault(struct work_struct *fault_work) +{ + struct cxl_context *ctx = + container_of(fault_work, struct cxl_context, fault_work); + u64 dsisr = ctx->dsisr; + u64 dar = ctx->dar; + struct task_struct *task; + struct mm_struct *mm; + + if (cxl_p2n_read(ctx->afu, CXL_PSL_DSISR_An) != dsisr || + cxl_p2n_read(ctx->afu, CXL_PSL_DAR_An) != dar || + cxl_p2n_read(ctx->afu, CXL_PSL_PEHandle_An) != ctx->pe) { + /* Most likely explanation is harmless - a dedicated process + * has detached and these were cleared by the PSL purge, but + * warn about it just in case */ + dev_notice(&ctx->afu->dev, "cxl_handle_fault: Translation fault regs changed\n"); + return; + } + + pr_devel("CXL BOTTOM HALF handling fault for afu pe: %i. " + "DSISR: %#llx DAR: %#llx\n", ctx->pe, dsisr, dar); + + if (!(task = get_pid_task(ctx->pid, PIDTYPE_PID))) { + pr_devel("cxl_handle_fault unable to get task %i\n", + pid_nr(ctx->pid)); + cxl_ack_ae(ctx); + return; + } + if (!(mm = get_task_mm(task))) { + pr_devel("cxl_handle_fault unable to get mm %i\n", + pid_nr(ctx->pid)); + cxl_ack_ae(ctx); + goto out; + } + + if (dsisr & CXL_PSL_DSISR_An_DS) + cxl_handle_segment_miss(ctx, mm, dar); + else if (dsisr & CXL_PSL_DSISR_An_DM) + cxl_handle_page_fault(ctx, mm, dsisr, dar); + else + WARN(1, "cxl_handle_fault has nothing to handle\n"); + + mmput(mm); +out: + put_task_struct(task); +} + +static void cxl_prefault_one(struct cxl_context *ctx, u64 ea) +{ + int rc; + struct task_struct *task; + struct mm_struct *mm; + + if (!(task = get_pid_task(ctx->pid, PIDTYPE_PID))) { + pr_devel("cxl_prefault_one unable to get task %i\n", + pid_nr(ctx->pid)); + return; + } + if (!(mm = get_task_mm(task))) { + pr_devel("cxl_prefault_one unable to get mm %i\n", + pid_nr(ctx->pid)); + put_task_struct(task); + return; + } + + rc = cxl_fault_segment(ctx, mm, ea); + + mmput(mm); + put_task_struct(task); +} + +static u64 next_segment(u64 ea, u64 vsid) +{ + if (vsid & SLB_VSID_B_1T) + ea |= (1ULL << 40) - 1; + else + ea |= (1ULL << 28) - 1; + + return ea + 1; +} + +static void cxl_prefault_vma(struct cxl_context *ctx) +{ + u64 ea, last_esid = 0; + struct copro_slb slb; + struct vm_area_struct *vma; + int rc; + struct task_struct *task; + struct mm_struct *mm; + + if (!(task = get_pid_task(ctx->pid, PIDTYPE_PID))) { + pr_devel("cxl_prefault_vma unable to get task %i\n", + pid_nr(ctx->pid)); + return; + } + if (!(mm = get_task_mm(task))) { + pr_devel("cxl_prefault_vm unable to get mm %i\n", + pid_nr(ctx->pid)); + goto out1; + } + + down_read(&mm->mmap_sem); + for (vma = mm->mmap; vma; vma = vma->vm_next) { + for (ea = vma->vm_start; ea < vma->vm_end; + ea = next_segment(ea, slb.vsid)) { + rc = copro_calculate_slb(mm, ea, &slb); + if (rc) + continue; + + if (last_esid == slb.esid) + continue; + + cxl_load_segment(ctx, &slb); + last_esid = slb.esid; + } + } + up_read(&mm->mmap_sem); + + mmput(mm); +out1: + put_task_struct(task); +} + +void cxl_prefault(struct cxl_context *ctx, u64 wed) +{ + switch (ctx->afu->prefault_mode) { + case CXL_PREFAULT_WED: + cxl_prefault_one(ctx, wed); + break; + case CXL_PREFAULT_ALL: + cxl_prefault_vma(ctx); + break; + default: + break; + } +} diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c new file mode 100644 index 0000000..378b099 --- /dev/null +++ b/drivers/misc/cxl/file.c @@ -0,0 +1,518 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/spinlock.h> +#include <linux/module.h> +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/bitmap.h> +#include <linux/sched.h> +#include <linux/poll.h> +#include <linux/pid.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <asm/cputable.h> +#include <asm/current.h> +#include <asm/copro.h> + +#include "cxl.h" + +#define CXL_NUM_MINORS 256 /* Total to reserve */ +#define CXL_DEV_MINORS 13 /* 1 control + 4 AFUs * 3 (dedicated/master/shared) */ + +#define CXL_CARD_MINOR(adapter) (adapter->adapter_num * CXL_DEV_MINORS) +#define CXL_AFU_MINOR_D(afu) (CXL_CARD_MINOR(afu->adapter) + 1 + (3 * afu->slice)) +#define CXL_AFU_MINOR_M(afu) (CXL_AFU_MINOR_D(afu) + 1) +#define CXL_AFU_MINOR_S(afu) (CXL_AFU_MINOR_D(afu) + 2) +#define CXL_AFU_MKDEV_D(afu) MKDEV(MAJOR(cxl_dev), CXL_AFU_MINOR_D(afu)) +#define CXL_AFU_MKDEV_M(afu) MKDEV(MAJOR(cxl_dev), CXL_AFU_MINOR_M(afu)) +#define CXL_AFU_MKDEV_S(afu) MKDEV(MAJOR(cxl_dev), CXL_AFU_MINOR_S(afu)) + +#define CXL_DEVT_ADAPTER(dev) (MINOR(dev) / CXL_DEV_MINORS) +#define CXL_DEVT_AFU(dev) ((MINOR(dev) % CXL_DEV_MINORS - 1) / 3) + +#define CXL_DEVT_IS_CARD(dev) (MINOR(dev) % CXL_DEV_MINORS == 0) + +static dev_t cxl_dev; + +static struct class *cxl_class; + +static int __afu_open(struct inode *inode, struct file *file, bool master) +{ + struct cxl *adapter; + struct cxl_afu *afu; + struct cxl_context *ctx; + int adapter_num = CXL_DEVT_ADAPTER(inode->i_rdev); + int slice = CXL_DEVT_AFU(inode->i_rdev); + int rc = -ENODEV; + + pr_devel("afu_open afu%i.%i\n", slice, adapter_num); + + if (!(adapter = get_cxl_adapter(adapter_num))) + return -ENODEV; + + if (slice > adapter->slices) + goto err_put_adapter; + + spin_lock(&adapter->afu_list_lock); + if (!(afu = adapter->afu[slice])) { + spin_unlock(&adapter->afu_list_lock); + goto err_put_adapter; + } + get_device(&afu->dev); + spin_unlock(&adapter->afu_list_lock); + + if (!afu->current_mode) + goto err_put_afu; + + if (!(ctx = cxl_context_alloc())) { + rc = -ENOMEM; + goto err_put_afu; + } + + if ((rc = cxl_context_init(ctx, afu, master))) + goto err_put_afu; + + pr_devel("afu_open pe: %i\n", ctx->pe); + file->private_data = ctx; + cxl_ctx_get(); + + /* Our ref on the AFU will now hold the adapter */ + put_device(&adapter->dev); + + return 0; + +err_put_afu: + put_device(&afu->dev); +err_put_adapter: + put_device(&adapter->dev); + return rc; +} +static int afu_open(struct inode *inode, struct file *file) +{ + return __afu_open(inode, file, false); +} + +static int afu_master_open(struct inode *inode, struct file *file) +{ + return __afu_open(inode, file, true); +} + +static int afu_release(struct inode *inode, struct file *file) +{ + struct cxl_context *ctx = file->private_data; + + pr_devel("%s: closing cxl file descriptor. pe: %i\n", + __func__, ctx->pe); + cxl_context_detach(ctx); + + put_device(&ctx->afu->dev); + + /* + * At this this point all bottom halfs have finished and we should be + * getting no more IRQs from the hardware for this context. Once it's + * removed from the IDR (and RCU synchronised) it's safe to free the + * sstp and context. + */ + cxl_context_free(ctx); + + cxl_ctx_put(); + return 0; +} + +static long afu_ioctl_start_work(struct cxl_context *ctx, + struct cxl_ioctl_start_work __user *uwork) +{ + struct cxl_ioctl_start_work work; + u64 amr = 0; + int rc; + + pr_devel("%s: pe: %i\n", __func__, ctx->pe); + + mutex_lock(&ctx->status_mutex); + if (ctx->status != OPENED) { + rc = -EIO; + goto out; + } + + if (copy_from_user(&work, uwork, + sizeof(struct cxl_ioctl_start_work))) { + rc = -EFAULT; + goto out; + } + + /* + * if any of the reserved fields are set or any of the unused + * flags are set it's invalid + */ + if (work.reserved1 || work.reserved2 || work.reserved3 || + work.reserved4 || work.reserved5 || work.reserved6 || + (work.flags & ~CXL_START_WORK_ALL)) { + rc = -EINVAL; + goto out; + } + + if (!(work.flags & CXL_START_WORK_NUM_IRQS)) + work.num_interrupts = ctx->afu->pp_irqs; + else if ((work.num_interrupts < ctx->afu->pp_irqs) || + (work.num_interrupts > ctx->afu->irqs_max)) { + rc = -EINVAL; + goto out; + } + if ((rc = afu_register_irqs(ctx, work.num_interrupts))) + goto out; + + if (work.flags & CXL_START_WORK_AMR) + amr = work.amr & mfspr(SPRN_UAMOR); + + /* + * We grab the PID here and not in the file open to allow for the case + * where a process (master, some daemon, etc) has opened the chardev on + * behalf of another process, so the AFU's mm gets bound to the process + * that performs this ioctl and not the process that opened the file. + */ + ctx->pid = get_pid(get_task_pid(current, PIDTYPE_PID)); + + if ((rc = cxl_attach_process(ctx, false, work.work_element_descriptor, + amr))) + goto out; + + ctx->status = STARTED; + rc = 0; +out: + mutex_unlock(&ctx->status_mutex); + return rc; +} +static long afu_ioctl_process_element(struct cxl_context *ctx, + int __user *upe) +{ + pr_devel("%s: pe: %i\n", __func__, ctx->pe); + + if (copy_to_user(upe, &ctx->pe, sizeof(__u32))) + return -EFAULT; + + return 0; +} + +static long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct cxl_context *ctx = file->private_data; + + if (ctx->status == CLOSED) + return -EIO; + + pr_devel("afu_ioctl\n"); + switch (cmd) { + case CXL_IOCTL_START_WORK: + return afu_ioctl_start_work(ctx, (struct cxl_ioctl_start_work __user *)arg); + case CXL_IOCTL_GET_PROCESS_ELEMENT: + return afu_ioctl_process_element(ctx, (__u32 __user *)arg); + } + return -EINVAL; +} + +static long afu_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + return afu_ioctl(file, cmd, arg); +} + +static int afu_mmap(struct file *file, struct vm_area_struct *vm) +{ + struct cxl_context *ctx = file->private_data; + + /* AFU must be started before we can MMIO */ + if (ctx->status != STARTED) + return -EIO; + + return cxl_context_iomap(ctx, vm); +} + +static unsigned int afu_poll(struct file *file, struct poll_table_struct *poll) +{ + struct cxl_context *ctx = file->private_data; + int mask = 0; + unsigned long flags; + + + poll_wait(file, &ctx->wq, poll); + + pr_devel("afu_poll wait done pe: %i\n", ctx->pe); + + spin_lock_irqsave(&ctx->lock, flags); + if (ctx->pending_irq || ctx->pending_fault || + ctx->pending_afu_err) + mask |= POLLIN | POLLRDNORM; + else if (ctx->status == CLOSED) + /* Only error on closed when there are no futher events pending + */ + mask |= POLLERR; + spin_unlock_irqrestore(&ctx->lock, flags); + + pr_devel("afu_poll pe: %i returning %#x\n", ctx->pe, mask); + + return mask; +} + +static inline int ctx_event_pending(struct cxl_context *ctx) +{ + return (ctx->pending_irq || ctx->pending_fault || + ctx->pending_afu_err || (ctx->status == CLOSED)); +} + +static ssize_t afu_read(struct file *file, char __user *buf, size_t count, + loff_t *off) +{ + struct cxl_context *ctx = file->private_data; + struct cxl_event event; + unsigned long flags; + int rc; + DEFINE_WAIT(wait); + + if (count < CXL_READ_MIN_SIZE) + return -EINVAL; + + spin_lock_irqsave(&ctx->lock, flags); + + for (;;) { + prepare_to_wait(&ctx->wq, &wait, TASK_INTERRUPTIBLE); + if (ctx_event_pending(ctx)) + break; + + if (file->f_flags & O_NONBLOCK) { + rc = -EAGAIN; + goto out; + } + + if (signal_pending(current)) { + rc = -ERESTARTSYS; + goto out; + } + + spin_unlock_irqrestore(&ctx->lock, flags); + pr_devel("afu_read going to sleep...\n"); + schedule(); + pr_devel("afu_read woken up\n"); + spin_lock_irqsave(&ctx->lock, flags); + } + + finish_wait(&ctx->wq, &wait); + + memset(&event, 0, sizeof(event)); + event.header.process_element = ctx->pe; + event.header.size = sizeof(struct cxl_event_header); + if (ctx->pending_irq) { + pr_devel("afu_read delivering AFU interrupt\n"); + event.header.size += sizeof(struct cxl_event_afu_interrupt); + event.header.type = CXL_EVENT_AFU_INTERRUPT; + event.irq.irq = find_first_bit(ctx->irq_bitmap, ctx->irq_count) + 1; + clear_bit(event.irq.irq - 1, ctx->irq_bitmap); + if (bitmap_empty(ctx->irq_bitmap, ctx->irq_count)) + ctx->pending_irq = false; + } else if (ctx->pending_fault) { + pr_devel("afu_read delivering data storage fault\n"); + event.header.size += sizeof(struct cxl_event_data_storage); + event.header.type = CXL_EVENT_DATA_STORAGE; + event.fault.addr = ctx->fault_addr; + event.fault.dsisr = ctx->fault_dsisr; + ctx->pending_fault = false; + } else if (ctx->pending_afu_err) { + pr_devel("afu_read delivering afu error\n"); + event.header.size += sizeof(struct cxl_event_afu_error); + event.header.type = CXL_EVENT_AFU_ERROR; + event.afu_error.error = ctx->afu_err; + ctx->pending_afu_err = false; + } else if (ctx->status == CLOSED) { + pr_devel("afu_read fatal error\n"); + spin_unlock_irqrestore(&ctx->lock, flags); + return -EIO; + } else + WARN(1, "afu_read must be buggy\n"); + + spin_unlock_irqrestore(&ctx->lock, flags); + + if (copy_to_user(buf, &event, event.header.size)) + return -EFAULT; + return event.header.size; + +out: + finish_wait(&ctx->wq, &wait); + spin_unlock_irqrestore(&ctx->lock, flags); + return rc; +} + +static const struct file_operations afu_fops = { + .owner = THIS_MODULE, + .open = afu_open, + .poll = afu_poll, + .read = afu_read, + .release = afu_release, + .unlocked_ioctl = afu_ioctl, + .compat_ioctl = afu_compat_ioctl, + .mmap = afu_mmap, +}; + +static const struct file_operations afu_master_fops = { + .owner = THIS_MODULE, + .open = afu_master_open, + .poll = afu_poll, + .read = afu_read, + .release = afu_release, + .unlocked_ioctl = afu_ioctl, + .compat_ioctl = afu_compat_ioctl, + .mmap = afu_mmap, +}; + + +static char *cxl_devnode(struct device *dev, umode_t *mode) +{ + if (CXL_DEVT_IS_CARD(dev->devt)) { + /* + * These minor numbers will eventually be used to program the + * PSL and AFUs once we have dynamic reprogramming support + */ + return NULL; + } + return kasprintf(GFP_KERNEL, "cxl/%s", dev_name(dev)); +} + +extern struct class *cxl_class; + +static int cxl_add_chardev(struct cxl_afu *afu, dev_t devt, struct cdev *cdev, + struct device **chardev, char *postfix, char *desc, + const struct file_operations *fops) +{ + struct device *dev; + int rc; + + cdev_init(cdev, fops); + if ((rc = cdev_add(cdev, devt, 1))) { + dev_err(&afu->dev, "Unable to add %s chardev: %i\n", desc, rc); + return rc; + } + + dev = device_create(cxl_class, &afu->dev, devt, afu, + "afu%i.%i%s", afu->adapter->adapter_num, afu->slice, postfix); + if (IS_ERR(dev)) { + dev_err(&afu->dev, "Unable to create %s chardev in sysfs: %i\n", desc, rc); + rc = PTR_ERR(dev); + goto err; + } + + *chardev = dev; + + return 0; +err: + cdev_del(cdev); + return rc; +} + +int cxl_chardev_d_afu_add(struct cxl_afu *afu) +{ + return cxl_add_chardev(afu, CXL_AFU_MKDEV_D(afu), &afu->afu_cdev_d, + &afu->chardev_d, "d", "dedicated", + &afu_master_fops); /* Uses master fops */ +} + +int cxl_chardev_m_afu_add(struct cxl_afu *afu) +{ + return cxl_add_chardev(afu, CXL_AFU_MKDEV_M(afu), &afu->afu_cdev_m, + &afu->chardev_m, "m", "master", + &afu_master_fops); +} + +int cxl_chardev_s_afu_add(struct cxl_afu *afu) +{ + return cxl_add_chardev(afu, CXL_AFU_MKDEV_S(afu), &afu->afu_cdev_s, + &afu->chardev_s, "s", "shared", + &afu_fops); +} + +void cxl_chardev_afu_remove(struct cxl_afu *afu) +{ + if (afu->chardev_d) { + cdev_del(&afu->afu_cdev_d); + device_unregister(afu->chardev_d); + afu->chardev_d = NULL; + } + if (afu->chardev_m) { + cdev_del(&afu->afu_cdev_m); + device_unregister(afu->chardev_m); + afu->chardev_m = NULL; + } + if (afu->chardev_s) { + cdev_del(&afu->afu_cdev_s); + device_unregister(afu->chardev_s); + afu->chardev_s = NULL; + } +} + +int cxl_register_afu(struct cxl_afu *afu) +{ + afu->dev.class = cxl_class; + + return device_register(&afu->dev); +} + +int cxl_register_adapter(struct cxl *adapter) +{ + adapter->dev.class = cxl_class; + + /* + * Future: When we support dynamically reprogramming the PSL & AFU we + * will expose the interface to do that via a chardev: + * adapter->dev.devt = CXL_CARD_MKDEV(adapter); + */ + + return device_register(&adapter->dev); +} + +int __init cxl_file_init(void) +{ + int rc; + + /* + * If these change we really need to update API. Either change some + * flags or update API version number CXL_API_VERSION. + */ + BUILD_BUG_ON(CXL_API_VERSION != 1); + BUILD_BUG_ON(sizeof(struct cxl_ioctl_start_work) != 64); + BUILD_BUG_ON(sizeof(struct cxl_event_header) != 8); + BUILD_BUG_ON(sizeof(struct cxl_event_afu_interrupt) != 8); + BUILD_BUG_ON(sizeof(struct cxl_event_data_storage) != 32); + BUILD_BUG_ON(sizeof(struct cxl_event_afu_error) != 16); + + if ((rc = alloc_chrdev_region(&cxl_dev, 0, CXL_NUM_MINORS, "cxl"))) { + pr_err("Unable to allocate CXL major number: %i\n", rc); + return rc; + } + + pr_devel("CXL device allocated, MAJOR %i\n", MAJOR(cxl_dev)); + + cxl_class = class_create(THIS_MODULE, "cxl"); + if (IS_ERR(cxl_class)) { + pr_err("Unable to create CXL class\n"); + rc = PTR_ERR(cxl_class); + goto err; + } + cxl_class->devnode = cxl_devnode; + + return 0; + +err: + unregister_chrdev_region(cxl_dev, CXL_NUM_MINORS); + return rc; +} + +void cxl_file_exit(void) +{ + unregister_chrdev_region(cxl_dev, CXL_NUM_MINORS); + class_destroy(cxl_class); +} diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c new file mode 100644 index 0000000..336020c --- /dev/null +++ b/drivers/misc/cxl/irq.c @@ -0,0 +1,402 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/interrupt.h> +#include <linux/workqueue.h> +#include <linux/sched.h> +#include <linux/wait.h> +#include <linux/slab.h> +#include <linux/pid.h> +#include <asm/cputable.h> +#include <misc/cxl.h> + +#include "cxl.h" + +/* XXX: This is implementation specific */ +static irqreturn_t handle_psl_slice_error(struct cxl_context *ctx, u64 dsisr, u64 errstat) +{ + u64 fir1, fir2, fir_slice, serr, afu_debug; + + fir1 = cxl_p1_read(ctx->afu->adapter, CXL_PSL_FIR1); + fir2 = cxl_p1_read(ctx->afu->adapter, CXL_PSL_FIR2); + fir_slice = cxl_p1n_read(ctx->afu, CXL_PSL_FIR_SLICE_An); + serr = cxl_p1n_read(ctx->afu, CXL_PSL_SERR_An); + afu_debug = cxl_p1n_read(ctx->afu, CXL_AFU_DEBUG_An); + + dev_crit(&ctx->afu->dev, "PSL ERROR STATUS: 0x%.16llx\n", errstat); + dev_crit(&ctx->afu->dev, "PSL_FIR1: 0x%.16llx\n", fir1); + dev_crit(&ctx->afu->dev, "PSL_FIR2: 0x%.16llx\n", fir2); + dev_crit(&ctx->afu->dev, "PSL_SERR_An: 0x%.16llx\n", serr); + dev_crit(&ctx->afu->dev, "PSL_FIR_SLICE_An: 0x%.16llx\n", fir_slice); + dev_crit(&ctx->afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%.16llx\n", afu_debug); + + dev_crit(&ctx->afu->dev, "STOPPING CXL TRACE\n"); + cxl_stop_trace(ctx->afu->adapter); + + return cxl_ack_irq(ctx, 0, errstat); +} + +irqreturn_t cxl_slice_irq_err(int irq, void *data) +{ + struct cxl_afu *afu = data; + u64 fir_slice, errstat, serr, afu_debug; + + WARN(irq, "CXL SLICE ERROR interrupt %i\n", irq); + + serr = cxl_p1n_read(afu, CXL_PSL_SERR_An); + fir_slice = cxl_p1n_read(afu, CXL_PSL_FIR_SLICE_An); + errstat = cxl_p2n_read(afu, CXL_PSL_ErrStat_An); + afu_debug = cxl_p1n_read(afu, CXL_AFU_DEBUG_An); + dev_crit(&afu->dev, "PSL_SERR_An: 0x%.16llx\n", serr); + dev_crit(&afu->dev, "PSL_FIR_SLICE_An: 0x%.16llx\n", fir_slice); + dev_crit(&afu->dev, "CXL_PSL_ErrStat_An: 0x%.16llx\n", errstat); + dev_crit(&afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%.16llx\n", afu_debug); + + cxl_p1n_write(afu, CXL_PSL_SERR_An, serr); + + return IRQ_HANDLED; +} + +static irqreturn_t cxl_irq_err(int irq, void *data) +{ + struct cxl *adapter = data; + u64 fir1, fir2, err_ivte; + + WARN(1, "CXL ERROR interrupt %i\n", irq); + + err_ivte = cxl_p1_read(adapter, CXL_PSL_ErrIVTE); + dev_crit(&adapter->dev, "PSL_ErrIVTE: 0x%.16llx\n", err_ivte); + + dev_crit(&adapter->dev, "STOPPING CXL TRACE\n"); + cxl_stop_trace(adapter); + + fir1 = cxl_p1_read(adapter, CXL_PSL_FIR1); + fir2 = cxl_p1_read(adapter, CXL_PSL_FIR2); + + dev_crit(&adapter->dev, "PSL_FIR1: 0x%.16llx\nPSL_FIR2: 0x%.16llx\n", fir1, fir2); + + return IRQ_HANDLED; +} + +static irqreturn_t schedule_cxl_fault(struct cxl_context *ctx, u64 dsisr, u64 dar) +{ + ctx->dsisr = dsisr; + ctx->dar = dar; + schedule_work(&ctx->fault_work); + return IRQ_HANDLED; +} + +static irqreturn_t cxl_irq(int irq, void *data) +{ + struct cxl_context *ctx = data; + struct cxl_irq_info irq_info; + u64 dsisr, dar; + int result; + + if ((result = cxl_get_irq(ctx, &irq_info))) { + WARN(1, "Unable to get CXL IRQ Info: %i\n", result); + return IRQ_HANDLED; + } + + dsisr = irq_info.dsisr; + dar = irq_info.dar; + + pr_devel("CXL interrupt %i for afu pe: %i DSISR: %#llx DAR: %#llx\n", irq, ctx->pe, dsisr, dar); + + if (dsisr & CXL_PSL_DSISR_An_DS) { + /* + * We don't inherently need to sleep to handle this, but we do + * need to get a ref to the task's mm, which we can't do from + * irq context without the potential for a deadlock since it + * takes the task_lock. An alternate option would be to keep a + * reference to the task's mm the entire time it has cxl open, + * but to do that we need to solve the issue where we hold a + * ref to the mm, but the mm can hold a ref to the fd after an + * mmap preventing anything from being cleaned up. + */ + pr_devel("Scheduling segment miss handling for later pe: %i\n", ctx->pe); + return schedule_cxl_fault(ctx, dsisr, dar); + } + + if (dsisr & CXL_PSL_DSISR_An_M) + pr_devel("CXL interrupt: PTE not found\n"); + if (dsisr & CXL_PSL_DSISR_An_P) + pr_devel("CXL interrupt: Storage protection violation\n"); + if (dsisr & CXL_PSL_DSISR_An_A) + pr_devel("CXL interrupt: AFU lock access to write through or cache inhibited storage\n"); + if (dsisr & CXL_PSL_DSISR_An_S) + pr_devel("CXL interrupt: Access was afu_wr or afu_zero\n"); + if (dsisr & CXL_PSL_DSISR_An_K) + pr_devel("CXL interrupt: Access not permitted by virtual page class key protection\n"); + + if (dsisr & CXL_PSL_DSISR_An_DM) { + /* + * In some cases we might be able to handle the fault + * immediately if hash_page would succeed, but we still need + * the task's mm, which as above we can't get without a lock + */ + pr_devel("Scheduling page fault handling for later pe: %i\n", ctx->pe); + return schedule_cxl_fault(ctx, dsisr, dar); + } + if (dsisr & CXL_PSL_DSISR_An_ST) + WARN(1, "CXL interrupt: Segment Table PTE not found\n"); + if (dsisr & CXL_PSL_DSISR_An_UR) + pr_devel("CXL interrupt: AURP PTE not found\n"); + if (dsisr & CXL_PSL_DSISR_An_PE) + return handle_psl_slice_error(ctx, dsisr, irq_info.errstat); + if (dsisr & CXL_PSL_DSISR_An_AE) { + pr_devel("CXL interrupt: AFU Error %.llx\n", irq_info.afu_err); + + if (ctx->pending_afu_err) { + /* + * This shouldn't happen - the PSL treats these errors + * as fatal and will have reset the AFU, so there's not + * much point buffering multiple AFU errors. + * OTOH if we DO ever see a storm of these come in it's + * probably best that we log them somewhere: + */ + dev_err_ratelimited(&ctx->afu->dev, "CXL AFU Error " + "undelivered to pe %i: %.llx\n", + ctx->pe, irq_info.afu_err); + } else { + spin_lock(&ctx->lock); + ctx->afu_err = irq_info.afu_err; + ctx->pending_afu_err = 1; + spin_unlock(&ctx->lock); + + wake_up_all(&ctx->wq); + } + + cxl_ack_irq(ctx, CXL_PSL_TFC_An_A, 0); + } + if (dsisr & CXL_PSL_DSISR_An_OC) + pr_devel("CXL interrupt: OS Context Warning\n"); + + WARN(1, "Unhandled CXL PSL IRQ\n"); + return IRQ_HANDLED; +} + +static irqreturn_t cxl_irq_multiplexed(int irq, void *data) +{ + struct cxl_afu *afu = data; + struct cxl_context *ctx; + int ph = cxl_p2n_read(afu, CXL_PSL_PEHandle_An) & 0xffff; + int ret; + + rcu_read_lock(); + ctx = idr_find(&afu->contexts_idr, ph); + if (ctx) { + ret = cxl_irq(irq, ctx); + rcu_read_unlock(); + return ret; + } + rcu_read_unlock(); + + WARN(1, "Unable to demultiplex CXL PSL IRQ\n"); + return IRQ_HANDLED; +} + +static irqreturn_t cxl_irq_afu(int irq, void *data) +{ + struct cxl_context *ctx = data; + irq_hw_number_t hwirq = irqd_to_hwirq(irq_get_irq_data(irq)); + int irq_off, afu_irq = 1; + __u16 range; + int r; + + for (r = 1; r < CXL_IRQ_RANGES; r++) { + irq_off = hwirq - ctx->irqs.offset[r]; + range = ctx->irqs.range[r]; + if (irq_off >= 0 && irq_off < range) { + afu_irq += irq_off; + break; + } + afu_irq += range; + } + if (unlikely(r >= CXL_IRQ_RANGES)) { + WARN(1, "Recieved AFU IRQ out of range for pe %i (virq %i hwirq %lx)\n", + ctx->pe, irq, hwirq); + return IRQ_HANDLED; + } + + pr_devel("Received AFU interrupt %i for pe: %i (virq %i hwirq %lx)\n", + afu_irq, ctx->pe, irq, hwirq); + + if (unlikely(!ctx->irq_bitmap)) { + WARN(1, "Recieved AFU IRQ for context with no IRQ bitmap\n"); + return IRQ_HANDLED; + } + spin_lock(&ctx->lock); + set_bit(afu_irq - 1, ctx->irq_bitmap); + ctx->pending_irq = true; + spin_unlock(&ctx->lock); + + wake_up_all(&ctx->wq); + + return IRQ_HANDLED; +} + +unsigned int cxl_map_irq(struct cxl *adapter, irq_hw_number_t hwirq, + irq_handler_t handler, void *cookie) +{ + unsigned int virq; + int result; + + /* IRQ Domain? */ + virq = irq_create_mapping(NULL, hwirq); + if (!virq) { + dev_warn(&adapter->dev, "cxl_map_irq: irq_create_mapping failed\n"); + return 0; + } + + cxl_setup_irq(adapter, hwirq, virq); + + pr_devel("hwirq %#lx mapped to virq %u\n", hwirq, virq); + + result = request_irq(virq, handler, 0, "cxl", cookie); + if (result) { + dev_warn(&adapter->dev, "cxl_map_irq: request_irq failed: %i\n", result); + return 0; + } + + return virq; +} + +void cxl_unmap_irq(unsigned int virq, void *cookie) +{ + free_irq(virq, cookie); + irq_dispose_mapping(virq); +} + +static int cxl_register_one_irq(struct cxl *adapter, + irq_handler_t handler, + void *cookie, + irq_hw_number_t *dest_hwirq, + unsigned int *dest_virq) +{ + int hwirq, virq; + + if ((hwirq = cxl_alloc_one_irq(adapter)) < 0) + return hwirq; + + if (!(virq = cxl_map_irq(adapter, hwirq, handler, cookie))) + goto err; + + *dest_hwirq = hwirq; + *dest_virq = virq; + + return 0; + +err: + cxl_release_one_irq(adapter, hwirq); + return -ENOMEM; +} + +int cxl_register_psl_err_irq(struct cxl *adapter) +{ + int rc; + + if ((rc = cxl_register_one_irq(adapter, cxl_irq_err, adapter, + &adapter->err_hwirq, + &adapter->err_virq))) + return rc; + + cxl_p1_write(adapter, CXL_PSL_ErrIVTE, adapter->err_hwirq & 0xffff); + + return 0; +} + +void cxl_release_psl_err_irq(struct cxl *adapter) +{ + cxl_p1_write(adapter, CXL_PSL_ErrIVTE, 0x0000000000000000); + cxl_unmap_irq(adapter->err_virq, adapter); + cxl_release_one_irq(adapter, adapter->err_hwirq); +} + +int cxl_register_serr_irq(struct cxl_afu *afu) +{ + u64 serr; + int rc; + + if ((rc = cxl_register_one_irq(afu->adapter, cxl_slice_irq_err, afu, + &afu->serr_hwirq, + &afu->serr_virq))) + return rc; + + serr = cxl_p1n_read(afu, CXL_PSL_SERR_An); + serr = (serr & 0x00ffffffffff0000ULL) | (afu->serr_hwirq & 0xffff); + cxl_p1n_write(afu, CXL_PSL_SERR_An, serr); + + return 0; +} + +void cxl_release_serr_irq(struct cxl_afu *afu) +{ + cxl_p1n_write(afu, CXL_PSL_SERR_An, 0x0000000000000000); + cxl_unmap_irq(afu->serr_virq, afu); + cxl_release_one_irq(afu->adapter, afu->serr_hwirq); +} + +int cxl_register_psl_irq(struct cxl_afu *afu) +{ + return cxl_register_one_irq(afu->adapter, cxl_irq_multiplexed, afu, + &afu->psl_hwirq, &afu->psl_virq); +} + +void cxl_release_psl_irq(struct cxl_afu *afu) +{ + cxl_unmap_irq(afu->psl_virq, afu); + cxl_release_one_irq(afu->adapter, afu->psl_hwirq); +} + +int afu_register_irqs(struct cxl_context *ctx, u32 count) +{ + irq_hw_number_t hwirq; + int rc, r, i; + + if ((rc = cxl_alloc_irq_ranges(&ctx->irqs, ctx->afu->adapter, count))) + return rc; + + /* Multiplexed PSL Interrupt */ + ctx->irqs.offset[0] = ctx->afu->psl_hwirq; + ctx->irqs.range[0] = 1; + + ctx->irq_count = count; + ctx->irq_bitmap = kcalloc(BITS_TO_LONGS(count), + sizeof(*ctx->irq_bitmap), GFP_KERNEL); + if (!ctx->irq_bitmap) + return -ENOMEM; + for (r = 1; r < CXL_IRQ_RANGES; r++) { + hwirq = ctx->irqs.offset[r]; + for (i = 0; i < ctx->irqs.range[r]; hwirq++, i++) { + cxl_map_irq(ctx->afu->adapter, hwirq, + cxl_irq_afu, ctx); + } + } + + return 0; +} + +void afu_release_irqs(struct cxl_context *ctx) +{ + irq_hw_number_t hwirq; + unsigned int virq; + int r, i; + + for (r = 1; r < CXL_IRQ_RANGES; r++) { + hwirq = ctx->irqs.offset[r]; + for (i = 0; i < ctx->irqs.range[r]; hwirq++, i++) { + virq = irq_find_mapping(NULL, hwirq); + if (virq) + cxl_unmap_irq(virq, ctx); + } + } + + cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter); +} diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c new file mode 100644 index 0000000..4cde9b6 --- /dev/null +++ b/drivers/misc/cxl/main.c @@ -0,0 +1,230 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/spinlock.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/mutex.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/mm.h> +#include <linux/of.h> +#include <linux/slab.h> +#include <linux/idr.h> +#include <linux/pci.h> +#include <asm/cputable.h> +#include <misc/cxl.h> + +#include "cxl.h" + +static DEFINE_SPINLOCK(adapter_idr_lock); +static DEFINE_IDR(cxl_adapter_idr); + +uint cxl_verbose; +module_param_named(verbose, cxl_verbose, uint, 0600); +MODULE_PARM_DESC(verbose, "Enable verbose dmesg output"); + +static inline void _cxl_slbia(struct cxl_context *ctx, struct mm_struct *mm) +{ + struct task_struct *task; + unsigned long flags; + if (!(task = get_pid_task(ctx->pid, PIDTYPE_PID))) { + pr_devel("%s unable to get task %i\n", + __func__, pid_nr(ctx->pid)); + return; + } + + if (task->mm != mm) + goto out_put; + + pr_devel("%s matched mm - card: %i afu: %i pe: %i\n", __func__, + ctx->afu->adapter->adapter_num, ctx->afu->slice, ctx->pe); + + spin_lock_irqsave(&ctx->sste_lock, flags); + memset(ctx->sstp, 0, ctx->sst_size); + spin_unlock_irqrestore(&ctx->sste_lock, flags); + mb(); + cxl_afu_slbia(ctx->afu); +out_put: + put_task_struct(task); +} + +static inline void cxl_slbia_core(struct mm_struct *mm) +{ + struct cxl *adapter; + struct cxl_afu *afu; + struct cxl_context *ctx; + int card, slice, id; + + pr_devel("%s called\n", __func__); + + spin_lock(&adapter_idr_lock); + idr_for_each_entry(&cxl_adapter_idr, adapter, card) { + /* XXX: Make this lookup faster with link from mm to ctx */ + spin_lock(&adapter->afu_list_lock); + for (slice = 0; slice < adapter->slices; slice++) { + afu = adapter->afu[slice]; + if (!afu->enabled) + continue; + rcu_read_lock(); + idr_for_each_entry(&afu->contexts_idr, ctx, id) + _cxl_slbia(ctx, mm); + rcu_read_unlock(); + } + spin_unlock(&adapter->afu_list_lock); + } + spin_unlock(&adapter_idr_lock); +} + +static struct cxl_calls cxl_calls = { + .cxl_slbia = cxl_slbia_core, + .owner = THIS_MODULE, +}; + +int cxl_alloc_sst(struct cxl_context *ctx) +{ + unsigned long vsid; + u64 ea_mask, size, sstp0, sstp1; + + sstp0 = 0; + sstp1 = 0; + + ctx->sst_size = PAGE_SIZE; + ctx->sst_lru = 0; + ctx->sstp = (struct cxl_sste *)get_zeroed_page(GFP_KERNEL); + if (!ctx->sstp) { + pr_err("cxl_alloc_sst: Unable to allocate segment table\n"); + return -ENOMEM; + } + pr_devel("SSTP allocated at 0x%p\n", ctx->sstp); + + vsid = get_kernel_vsid((u64)ctx->sstp, mmu_kernel_ssize) << 12; + + sstp0 |= (u64)mmu_kernel_ssize << CXL_SSTP0_An_B_SHIFT; + sstp0 |= (SLB_VSID_KERNEL | mmu_psize_defs[mmu_linear_psize].sllp) << 50; + + size = (((u64)ctx->sst_size >> 8) - 1) << CXL_SSTP0_An_SegTableSize_SHIFT; + if (unlikely(size & ~CXL_SSTP0_An_SegTableSize_MASK)) { + WARN(1, "Impossible segment table size\n"); + return -EINVAL; + } + sstp0 |= size; + + if (mmu_kernel_ssize == MMU_SEGSIZE_256M) + ea_mask = 0xfffff00ULL; + else + ea_mask = 0xffffffff00ULL; + + sstp0 |= vsid >> (50-14); /* Top 14 bits of VSID */ + sstp1 |= (vsid << (64-(50-14))) & ~ea_mask; + sstp1 |= (u64)ctx->sstp & ea_mask; + sstp1 |= CXL_SSTP1_An_V; + + pr_devel("Looked up %#llx: slbfee. %#llx (ssize: %x, vsid: %#lx), copied to SSTP0: %#llx, SSTP1: %#llx\n", + (u64)ctx->sstp, (u64)ctx->sstp & ESID_MASK, mmu_kernel_ssize, vsid, sstp0, sstp1); + + /* Store calculated sstp hardware points for use later */ + ctx->sstp0 = sstp0; + ctx->sstp1 = sstp1; + + return 0; +} + +/* Find a CXL adapter by it's number and increase it's refcount */ +struct cxl *get_cxl_adapter(int num) +{ + struct cxl *adapter; + + spin_lock(&adapter_idr_lock); + if ((adapter = idr_find(&cxl_adapter_idr, num))) + get_device(&adapter->dev); + spin_unlock(&adapter_idr_lock); + + return adapter; +} + +int cxl_alloc_adapter_nr(struct cxl *adapter) +{ + int i; + + idr_preload(GFP_KERNEL); + spin_lock(&adapter_idr_lock); + i = idr_alloc(&cxl_adapter_idr, adapter, 0, 0, GFP_NOWAIT); + spin_unlock(&adapter_idr_lock); + idr_preload_end(); + if (i < 0) + return i; + + adapter->adapter_num = i; + + return 0; +} + +void cxl_remove_adapter_nr(struct cxl *adapter) +{ + idr_remove(&cxl_adapter_idr, adapter->adapter_num); +} + +int cxl_afu_select_best_mode(struct cxl_afu *afu) +{ + if (afu->modes_supported & CXL_MODE_DIRECTED) + return cxl_afu_activate_mode(afu, CXL_MODE_DIRECTED); + + if (afu->modes_supported & CXL_MODE_DEDICATED) + return cxl_afu_activate_mode(afu, CXL_MODE_DEDICATED); + + dev_warn(&afu->dev, "No supported programming modes available\n"); + /* We don't fail this so the user can inspect sysfs */ + return 0; +} + +static int __init init_cxl(void) +{ + int rc = 0; + + if (!cpu_has_feature(CPU_FTR_HVMODE)) + return -EPERM; + + if ((rc = cxl_file_init())) + return rc; + + cxl_debugfs_init(); + + if ((rc = register_cxl_calls(&cxl_calls))) + goto err; + + if ((rc = pci_register_driver(&cxl_pci_driver))) + goto err1; + + return 0; +err1: + unregister_cxl_calls(&cxl_calls); +err: + cxl_debugfs_exit(); + cxl_file_exit(); + + return rc; +} + +static void exit_cxl(void) +{ + pci_unregister_driver(&cxl_pci_driver); + + cxl_debugfs_exit(); + cxl_file_exit(); + unregister_cxl_calls(&cxl_calls); +} + +module_init(init_cxl); +module_exit(exit_cxl); + +MODULE_DESCRIPTION("IBM Coherent Accelerator"); +MODULE_AUTHOR("Ian Munsie <imunsie@au1.ibm.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c new file mode 100644 index 0000000..623286a --- /dev/null +++ b/drivers/misc/cxl/native.c @@ -0,0 +1,683 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <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> +#include <asm/synch.h> +#include <misc/cxl.h> + +#include "cxl.h" + +static int afu_control(struct cxl_afu *afu, u64 command, + u64 result, u64 mask, bool enabled) +{ + u64 AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); + unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + + spin_lock(&afu->afu_cntl_lock); + pr_devel("AFU command starting: %llx\n", command); + + cxl_p2n_write(afu, CXL_AFU_Cntl_An, AFU_Cntl | command); + + AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); + while ((AFU_Cntl & mask) != result) { + if (time_after_eq(jiffies, timeout)) { + dev_warn(&afu->dev, "WARNING: AFU control timed out!\n"); + spin_unlock(&afu->afu_cntl_lock); + return -EBUSY; + } + pr_devel_ratelimited("AFU control... (0x%.16llx)\n", + AFU_Cntl | command); + cpu_relax(); + AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); + }; + pr_devel("AFU command complete: %llx\n", command); + afu->enabled = enabled; + spin_unlock(&afu->afu_cntl_lock); + + return 0; +} + +static int afu_enable(struct cxl_afu *afu) +{ + pr_devel("AFU enable request\n"); + + return afu_control(afu, CXL_AFU_Cntl_An_E, + CXL_AFU_Cntl_An_ES_Enabled, + CXL_AFU_Cntl_An_ES_MASK, true); +} + +int cxl_afu_disable(struct cxl_afu *afu) +{ + pr_devel("AFU disable request\n"); + + return afu_control(afu, 0, CXL_AFU_Cntl_An_ES_Disabled, + CXL_AFU_Cntl_An_ES_MASK, false); +} + +/* This will disable as well as reset */ +int cxl_afu_reset(struct cxl_afu *afu) +{ + pr_devel("AFU reset request\n"); + + return afu_control(afu, CXL_AFU_Cntl_An_RA, + CXL_AFU_Cntl_An_RS_Complete | CXL_AFU_Cntl_An_ES_Disabled, + CXL_AFU_Cntl_An_RS_MASK | CXL_AFU_Cntl_An_ES_MASK, + false); +} + +static int afu_check_and_enable(struct cxl_afu *afu) +{ + if (afu->enabled) + return 0; + return afu_enable(afu); +} + +int cxl_psl_purge(struct cxl_afu *afu) +{ + u64 PSL_CNTL = cxl_p1n_read(afu, CXL_PSL_SCNTL_An); + u64 AFU_Cntl = cxl_p2n_read(afu, CXL_AFU_Cntl_An); + u64 dsisr, dar; + u64 start, end; + unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + + pr_devel("PSL purge request\n"); + + if ((AFU_Cntl & CXL_AFU_Cntl_An_ES_MASK) != CXL_AFU_Cntl_An_ES_Disabled) { + WARN(1, "psl_purge request while AFU not disabled!\n"); + cxl_afu_disable(afu); + } + + cxl_p1n_write(afu, CXL_PSL_SCNTL_An, + PSL_CNTL | CXL_PSL_SCNTL_An_Pc); + start = local_clock(); + PSL_CNTL = cxl_p1n_read(afu, CXL_PSL_SCNTL_An); + while ((PSL_CNTL & CXL_PSL_SCNTL_An_Ps_MASK) + == CXL_PSL_SCNTL_An_Ps_Pending) { + if (time_after_eq(jiffies, timeout)) { + dev_warn(&afu->dev, "WARNING: PSL Purge timed out!\n"); + return -EBUSY; + } + dsisr = cxl_p2n_read(afu, CXL_PSL_DSISR_An); + pr_devel_ratelimited("PSL purging... PSL_CNTL: 0x%.16llx PSL_DSISR: 0x%.16llx\n", PSL_CNTL, dsisr); + if (dsisr & CXL_PSL_DSISR_TRANS) { + dar = cxl_p2n_read(afu, CXL_PSL_DAR_An); + dev_notice(&afu->dev, "PSL purge terminating pending translation, DSISR: 0x%.16llx, DAR: 0x%.16llx\n", dsisr, dar); + cxl_p2n_write(afu, CXL_PSL_TFC_An, CXL_PSL_TFC_An_AE); + } else if (dsisr) { + dev_notice(&afu->dev, "PSL purge acknowledging pending non-translation fault, DSISR: 0x%.16llx\n", dsisr); + cxl_p2n_write(afu, CXL_PSL_TFC_An, CXL_PSL_TFC_An_A); + } else { + 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); + + cxl_p1n_write(afu, CXL_PSL_SCNTL_An, + PSL_CNTL & ~CXL_PSL_SCNTL_An_Pc); + return 0; +} + +static int spa_max_procs(int spa_size) +{ + /* + * From the CAIA: + * end_of_SPA_area = SPA_Base + ((n+4) * 128) + (( ((n*8) + 127) >> 7) * 128) + 255 + * Most of that junk is really just an overly-complicated way of saying + * the last 256 bytes are __aligned(128), so it's really: + * end_of_SPA_area = end_of_PSL_queue_area + __aligned(128) 255 + * and + * end_of_PSL_queue_area = SPA_Base + ((n+4) * 128) + (n*8) - 1 + * so + * sizeof(SPA) = ((n+4) * 128) + (n*8) + __aligned(128) 256 + * Ignore the alignment (which is safe in this case as long as we are + * careful with our rounding) and solve for n: + */ + return ((spa_size / 8) - 96) / 17; +} + +static int alloc_spa(struct cxl_afu *afu) +{ + u64 spap; + + /* Work out how many pages to allocate */ + afu->spa_order = 0; + do { + afu->spa_order++; + afu->spa_size = (1 << afu->spa_order) * PAGE_SIZE; + afu->spa_max_procs = spa_max_procs(afu->spa_size); + } while (afu->spa_max_procs < afu->num_procs); + + WARN_ON(afu->spa_size > 0x100000); /* Max size supported by the hardware */ + + if (!(afu->spa = (struct cxl_process_element *) + __get_free_pages(GFP_KERNEL | __GFP_ZERO, afu->spa_order))) { + pr_err("cxl_alloc_spa: Unable to allocate scheduled process area\n"); + return -ENOMEM; + } + pr_devel("spa pages: %i afu->spa_max_procs: %i afu->num_procs: %i\n", + 1<<afu->spa_order, afu->spa_max_procs, afu->num_procs); + + afu->sw_command_status = (__be64 *)((char *)afu->spa + + ((afu->spa_max_procs + 3) * 128)); + + spap = virt_to_phys(afu->spa) & CXL_PSL_SPAP_Addr; + spap |= ((afu->spa_size >> (12 - CXL_PSL_SPAP_Size_Shift)) - 1) & CXL_PSL_SPAP_Size; + spap |= CXL_PSL_SPAP_V; + pr_devel("cxl: SPA allocated at 0x%p. Max processes: %i, sw_command_status: 0x%p CXL_PSL_SPAP_An=0x%016llx\n", afu->spa, afu->spa_max_procs, afu->sw_command_status, spap); + cxl_p1n_write(afu, CXL_PSL_SPAP_An, spap); + + return 0; +} + +static void release_spa(struct cxl_afu *afu) +{ + free_pages((unsigned long) afu->spa, afu->spa_order); +} + +int cxl_tlb_slb_invalidate(struct cxl *adapter) +{ + unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + + pr_devel("CXL adapter wide TLBIA & SLBIA\n"); + + cxl_p1_write(adapter, CXL_PSL_AFUSEL, CXL_PSL_AFUSEL_A); + + cxl_p1_write(adapter, CXL_PSL_TLBIA, CXL_TLB_SLB_IQ_ALL); + while (cxl_p1_read(adapter, CXL_PSL_TLBIA) & CXL_TLB_SLB_P) { + if (time_after_eq(jiffies, timeout)) { + dev_warn(&adapter->dev, "WARNING: CXL adapter wide TLBIA timed out!\n"); + return -EBUSY; + } + cpu_relax(); + } + + cxl_p1_write(adapter, CXL_PSL_SLBIA, CXL_TLB_SLB_IQ_ALL); + while (cxl_p1_read(adapter, CXL_PSL_SLBIA) & CXL_TLB_SLB_P) { + if (time_after_eq(jiffies, timeout)) { + dev_warn(&adapter->dev, "WARNING: CXL adapter wide SLBIA timed out!\n"); + return -EBUSY; + } + cpu_relax(); + } + return 0; +} + +int cxl_afu_slbia(struct cxl_afu *afu) +{ + unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); + + pr_devel("cxl_afu_slbia issuing SLBIA command\n"); + cxl_p2n_write(afu, CXL_SLBIA_An, CXL_TLB_SLB_IQ_ALL); + while (cxl_p2n_read(afu, CXL_SLBIA_An) & CXL_TLB_SLB_P) { + if (time_after_eq(jiffies, timeout)) { + dev_warn(&afu->dev, "WARNING: CXL AFU SLBIA timed out!\n"); + return -EBUSY; + } + cpu_relax(); + } + return 0; +} + +static int cxl_write_sstp(struct cxl_afu *afu, u64 sstp0, u64 sstp1) +{ + int rc; + + /* 1. Disable SSTP by writing 0 to SSTP1[V] */ + cxl_p2n_write(afu, CXL_SSTP1_An, 0); + + /* 2. Invalidate all SLB entries */ + if ((rc = cxl_afu_slbia(afu))) + return rc; + + /* 3. Set SSTP0_An */ + cxl_p2n_write(afu, CXL_SSTP0_An, sstp0); + + /* 4. Set SSTP1_An */ + cxl_p2n_write(afu, CXL_SSTP1_An, sstp1); + + return 0; +} + +/* Using per slice version may improve performance here. (ie. SLBIA_An) */ +static void slb_invalid(struct cxl_context *ctx) +{ + struct cxl *adapter = ctx->afu->adapter; + u64 slbia; + + WARN_ON(!mutex_is_locked(&ctx->afu->spa_mutex)); + + cxl_p1_write(adapter, CXL_PSL_LBISEL, + ((u64)be32_to_cpu(ctx->elem->common.pid) << 32) | + be32_to_cpu(ctx->elem->lpid)); + cxl_p1_write(adapter, CXL_PSL_SLBIA, CXL_TLB_SLB_IQ_LPIDPID); + + while (1) { + slbia = cxl_p1_read(adapter, CXL_PSL_SLBIA); + if (!(slbia & CXL_TLB_SLB_P)) + break; + cpu_relax(); + } +} + +static int do_process_element_cmd(struct cxl_context *ctx, + u64 cmd, u64 pe_state) +{ + u64 state; + + WARN_ON(!ctx->afu->enabled); + + ctx->elem->software_state = cpu_to_be32(pe_state); + smp_wmb(); + *(ctx->afu->sw_command_status) = cpu_to_be64(cmd | 0 | ctx->pe); + smp_mb(); + cxl_p1n_write(ctx->afu, CXL_PSL_LLCMD_An, cmd | ctx->pe); + while (1) { + state = be64_to_cpup(ctx->afu->sw_command_status); + if (state == ~0ULL) { + pr_err("cxl: Error adding process element to AFU\n"); + return -1; + } + if ((state & (CXL_SPA_SW_CMD_MASK | CXL_SPA_SW_STATE_MASK | CXL_SPA_SW_LINK_MASK)) == + (cmd | (cmd >> 16) | ctx->pe)) + break; + /* + * The command won't finish in the PSL if there are + * outstanding DSIs. Hence we need to yield here in + * case there are outstanding DSIs that we need to + * service. Tuning possiblity: we could wait for a + * while before sched + */ + schedule(); + + } + return 0; +} + +static int add_process_element(struct cxl_context *ctx) +{ + int rc = 0; + + mutex_lock(&ctx->afu->spa_mutex); + pr_devel("%s Adding pe: %i started\n", __func__, ctx->pe); + if (!(rc = do_process_element_cmd(ctx, CXL_SPA_SW_CMD_ADD, CXL_PE_SOFTWARE_STATE_V))) + ctx->pe_inserted = true; + pr_devel("%s Adding pe: %i finished\n", __func__, ctx->pe); + mutex_unlock(&ctx->afu->spa_mutex); + return rc; +} + +static int terminate_process_element(struct cxl_context *ctx) +{ + int rc = 0; + + /* fast path terminate if it's already invalid */ + if (!(ctx->elem->software_state & cpu_to_be32(CXL_PE_SOFTWARE_STATE_V))) + return rc; + + mutex_lock(&ctx->afu->spa_mutex); + pr_devel("%s Terminate pe: %i started\n", __func__, ctx->pe); + rc = do_process_element_cmd(ctx, CXL_SPA_SW_CMD_TERMINATE, + CXL_PE_SOFTWARE_STATE_V | CXL_PE_SOFTWARE_STATE_T); + ctx->elem->software_state = 0; /* Remove Valid bit */ + pr_devel("%s Terminate pe: %i finished\n", __func__, ctx->pe); + mutex_unlock(&ctx->afu->spa_mutex); + return rc; +} + +static int remove_process_element(struct cxl_context *ctx) +{ + int rc = 0; + + mutex_lock(&ctx->afu->spa_mutex); + pr_devel("%s Remove pe: %i started\n", __func__, ctx->pe); + if (!(rc = do_process_element_cmd(ctx, CXL_SPA_SW_CMD_REMOVE, 0))) + ctx->pe_inserted = false; + slb_invalid(ctx); + pr_devel("%s Remove pe: %i finished\n", __func__, ctx->pe); + mutex_unlock(&ctx->afu->spa_mutex); + + return rc; +} + + +static void assign_psn_space(struct cxl_context *ctx) +{ + if (!ctx->afu->pp_size || ctx->master) { + ctx->psn_phys = ctx->afu->psn_phys; + ctx->psn_size = ctx->afu->adapter->ps_size; + } else { + ctx->psn_phys = ctx->afu->psn_phys + + (ctx->afu->pp_offset + ctx->afu->pp_size * ctx->pe); + ctx->psn_size = ctx->afu->pp_size; + } +} + +static int activate_afu_directed(struct cxl_afu *afu) +{ + int rc; + + dev_info(&afu->dev, "Activating AFU directed mode\n"); + + if (alloc_spa(afu)) + return -ENOMEM; + + cxl_p1n_write(afu, CXL_PSL_SCNTL_An, CXL_PSL_SCNTL_An_PM_AFU); + cxl_p1n_write(afu, CXL_PSL_AMOR_An, 0xFFFFFFFFFFFFFFFFULL); + cxl_p1n_write(afu, CXL_PSL_ID_An, CXL_PSL_ID_An_F | CXL_PSL_ID_An_L); + + afu->current_mode = CXL_MODE_DIRECTED; + afu->num_procs = afu->max_procs_virtualised; + + if ((rc = cxl_chardev_m_afu_add(afu))) + return rc; + + if ((rc = cxl_sysfs_afu_m_add(afu))) + goto err; + + if ((rc = cxl_chardev_s_afu_add(afu))) + goto err1; + + return 0; +err1: + cxl_sysfs_afu_m_remove(afu); +err: + cxl_chardev_afu_remove(afu); + return rc; +} + +#ifdef CONFIG_CPU_LITTLE_ENDIAN +#define set_endian(sr) ((sr) |= CXL_PSL_SR_An_LE) +#else +#define set_endian(sr) ((sr) &= ~(CXL_PSL_SR_An_LE)) +#endif + +static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr) +{ + u64 sr; + int r, result; + + assign_psn_space(ctx); + + ctx->elem->ctxtime = 0; /* disable */ + ctx->elem->lpid = cpu_to_be32(mfspr(SPRN_LPID)); + ctx->elem->haurp = 0; /* disable */ + ctx->elem->sdr = cpu_to_be64(mfspr(SPRN_SDR1)); + + sr = CXL_PSL_SR_An_SC; + if (ctx->master) + sr |= CXL_PSL_SR_An_MP; + if (mfspr(SPRN_LPCR) & LPCR_TC) + sr |= CXL_PSL_SR_An_TC; + /* HV=0, PR=1, R=1 for userspace + * For kernel contexts: this would need to change + */ + sr |= CXL_PSL_SR_An_PR | CXL_PSL_SR_An_R; + set_endian(sr); + sr &= ~(CXL_PSL_SR_An_HV); + if (!test_tsk_thread_flag(current, TIF_32BIT)) + sr |= CXL_PSL_SR_An_SF; + ctx->elem->common.pid = cpu_to_be32(current->pid); + ctx->elem->common.tid = 0; + ctx->elem->sr = cpu_to_be64(sr); + + ctx->elem->common.csrp = 0; /* disable */ + ctx->elem->common.aurp0 = 0; /* disable */ + ctx->elem->common.aurp1 = 0; /* disable */ + + cxl_prefault(ctx, wed); + + ctx->elem->common.sstp0 = cpu_to_be64(ctx->sstp0); + ctx->elem->common.sstp1 = cpu_to_be64(ctx->sstp1); + + for (r = 0; r < CXL_IRQ_RANGES; r++) { + ctx->elem->ivte_offsets[r] = cpu_to_be16(ctx->irqs.offset[r]); + ctx->elem->ivte_ranges[r] = cpu_to_be16(ctx->irqs.range[r]); + } + + ctx->elem->common.amr = cpu_to_be64(amr); + ctx->elem->common.wed = cpu_to_be64(wed); + + /* first guy needs to enable */ + if ((result = afu_check_and_enable(ctx->afu))) + return result; + + add_process_element(ctx); + + return 0; +} + +static int deactivate_afu_directed(struct cxl_afu *afu) +{ + dev_info(&afu->dev, "Deactivating AFU directed mode\n"); + + afu->current_mode = 0; + afu->num_procs = 0; + + cxl_sysfs_afu_m_remove(afu); + cxl_chardev_afu_remove(afu); + + cxl_afu_reset(afu); + cxl_afu_disable(afu); + cxl_psl_purge(afu); + + release_spa(afu); + + return 0; +} + +static int activate_dedicated_process(struct cxl_afu *afu) +{ + dev_info(&afu->dev, "Activating dedicated process mode\n"); + + cxl_p1n_write(afu, CXL_PSL_SCNTL_An, CXL_PSL_SCNTL_An_PM_Process); + + cxl_p1n_write(afu, CXL_PSL_CtxTime_An, 0); /* disable */ + cxl_p1n_write(afu, CXL_PSL_SPAP_An, 0); /* disable */ + cxl_p1n_write(afu, CXL_PSL_AMOR_An, 0xFFFFFFFFFFFFFFFFULL); + cxl_p1n_write(afu, CXL_PSL_LPID_An, mfspr(SPRN_LPID)); + cxl_p1n_write(afu, CXL_HAURP_An, 0); /* disable */ + cxl_p1n_write(afu, CXL_PSL_SDR_An, mfspr(SPRN_SDR1)); + + cxl_p2n_write(afu, CXL_CSRP_An, 0); /* disable */ + cxl_p2n_write(afu, CXL_AURP0_An, 0); /* disable */ + cxl_p2n_write(afu, CXL_AURP1_An, 0); /* disable */ + + afu->current_mode = CXL_MODE_DEDICATED; + afu->num_procs = 1; + + return cxl_chardev_d_afu_add(afu); +} + +static int attach_dedicated(struct cxl_context *ctx, u64 wed, u64 amr) +{ + struct cxl_afu *afu = ctx->afu; + u64 sr; + int rc; + + sr = CXL_PSL_SR_An_SC; + set_endian(sr); + if (ctx->master) + sr |= CXL_PSL_SR_An_MP; + if (mfspr(SPRN_LPCR) & LPCR_TC) + sr |= CXL_PSL_SR_An_TC; + sr |= CXL_PSL_SR_An_PR | CXL_PSL_SR_An_R; + if (!test_tsk_thread_flag(current, TIF_32BIT)) + sr |= CXL_PSL_SR_An_SF; + cxl_p2n_write(afu, CXL_PSL_PID_TID_An, (u64)current->pid << 32); + cxl_p1n_write(afu, CXL_PSL_SR_An, sr); + + if ((rc = cxl_write_sstp(afu, ctx->sstp0, ctx->sstp1))) + return rc; + + cxl_prefault(ctx, wed); + + cxl_p1n_write(afu, CXL_PSL_IVTE_Offset_An, + (((u64)ctx->irqs.offset[0] & 0xffff) << 48) | + (((u64)ctx->irqs.offset[1] & 0xffff) << 32) | + (((u64)ctx->irqs.offset[2] & 0xffff) << 16) | + ((u64)ctx->irqs.offset[3] & 0xffff)); + cxl_p1n_write(afu, CXL_PSL_IVTE_Limit_An, (u64) + (((u64)ctx->irqs.range[0] & 0xffff) << 48) | + (((u64)ctx->irqs.range[1] & 0xffff) << 32) | + (((u64)ctx->irqs.range[2] & 0xffff) << 16) | + ((u64)ctx->irqs.range[3] & 0xffff)); + + cxl_p2n_write(afu, CXL_PSL_AMR_An, amr); + + /* master only context for dedicated */ + assign_psn_space(ctx); + + if ((rc = cxl_afu_reset(afu))) + return rc; + + cxl_p2n_write(afu, CXL_PSL_WED_An, wed); + + return afu_enable(afu); +} + +static int deactivate_dedicated_process(struct cxl_afu *afu) +{ + dev_info(&afu->dev, "Deactivating dedicated process mode\n"); + + afu->current_mode = 0; + afu->num_procs = 0; + + cxl_chardev_afu_remove(afu); + + return 0; +} + +int _cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode) +{ + if (mode == CXL_MODE_DIRECTED) + return deactivate_afu_directed(afu); + if (mode == CXL_MODE_DEDICATED) + return deactivate_dedicated_process(afu); + return 0; +} + +int cxl_afu_deactivate_mode(struct cxl_afu *afu) +{ + return _cxl_afu_deactivate_mode(afu, afu->current_mode); +} + +int cxl_afu_activate_mode(struct cxl_afu *afu, int mode) +{ + if (!mode) + return 0; + if (!(mode & afu->modes_supported)) + return -EINVAL; + + if (mode == CXL_MODE_DIRECTED) + return activate_afu_directed(afu); + if (mode == CXL_MODE_DEDICATED) + return activate_dedicated_process(afu); + + return -EINVAL; +} + +int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, u64 amr) +{ + ctx->kernel = kernel; + if (ctx->afu->current_mode == CXL_MODE_DIRECTED) + return attach_afu_directed(ctx, wed, amr); + + if (ctx->afu->current_mode == CXL_MODE_DEDICATED) + return attach_dedicated(ctx, wed, amr); + + return -EINVAL; +} + +static inline int detach_process_native_dedicated(struct cxl_context *ctx) +{ + cxl_afu_reset(ctx->afu); + cxl_afu_disable(ctx->afu); + cxl_psl_purge(ctx->afu); + return 0; +} + +/* + * TODO: handle case when this is called inside a rcu_read_lock() which may + * happen when we unbind the driver (ie. cxl_context_detach_all()) . Terminate + * & remove use a mutex lock and schedule which will not good with lock held. + * May need to write do_process_element_cmd() that handles outstanding page + * faults synchronously. + */ +static inline int detach_process_native_afu_directed(struct cxl_context *ctx) +{ + if (!ctx->pe_inserted) + return 0; + if (terminate_process_element(ctx)) + return -1; + if (remove_process_element(ctx)) + return -1; + + return 0; +} + +int cxl_detach_process(struct cxl_context *ctx) +{ + if (ctx->afu->current_mode == CXL_MODE_DEDICATED) + return detach_process_native_dedicated(ctx); + + return detach_process_native_afu_directed(ctx); +} + +int cxl_get_irq(struct cxl_context *ctx, struct cxl_irq_info *info) +{ + u64 pidtid; + + info->dsisr = cxl_p2n_read(ctx->afu, CXL_PSL_DSISR_An); + info->dar = cxl_p2n_read(ctx->afu, CXL_PSL_DAR_An); + info->dsr = cxl_p2n_read(ctx->afu, CXL_PSL_DSR_An); + pidtid = cxl_p2n_read(ctx->afu, CXL_PSL_PID_TID_An); + info->pid = pidtid >> 32; + info->tid = pidtid & 0xffffffff; + info->afu_err = cxl_p2n_read(ctx->afu, CXL_AFU_ERR_An); + info->errstat = cxl_p2n_read(ctx->afu, CXL_PSL_ErrStat_An); + + return 0; +} + +static void recover_psl_err(struct cxl_afu *afu, u64 errstat) +{ + u64 dsisr; + + pr_devel("RECOVERING FROM PSL ERROR... (0x%.16llx)\n", errstat); + + /* Clear PSL_DSISR[PE] */ + dsisr = cxl_p2n_read(afu, CXL_PSL_DSISR_An); + cxl_p2n_write(afu, CXL_PSL_DSISR_An, dsisr & ~CXL_PSL_DSISR_An_PE); + + /* Write 1s to clear error status bits */ + cxl_p2n_write(afu, CXL_PSL_ErrStat_An, errstat); +} + +int cxl_ack_irq(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask) +{ + if (tfc) + cxl_p2n_write(ctx->afu, CXL_PSL_TFC_An, tfc); + if (psl_reset_mask) + recover_psl_err(ctx->afu, psl_reset_mask); + + return 0; +} + +int cxl_check_error(struct cxl_afu *afu) +{ + return (cxl_p1n_read(afu, CXL_PSL_SCNTL_An) == ~0ULL); +} diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c new file mode 100644 index 0000000..10c98ab --- /dev/null +++ b/drivers/misc/cxl/pci.c @@ -0,0 +1,1000 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/pci_regs.h> +#include <linux/pci_ids.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/sort.h> +#include <linux/pci.h> +#include <linux/of.h> +#include <linux/delay.h> +#include <asm/opal.h> +#include <asm/msi_bitmap.h> +#include <asm/pci-bridge.h> /* for struct pci_controller */ +#include <asm/pnv-pci.h> + +#include "cxl.h" + + +#define CXL_PCI_VSEC_ID 0x1280 +#define CXL_VSEC_MIN_SIZE 0x80 + +#define CXL_READ_VSEC_LENGTH(dev, vsec, dest) \ + { \ + pci_read_config_word(dev, vsec + 0x6, dest); \ + *dest >>= 4; \ + } +#define CXL_READ_VSEC_NAFUS(dev, vsec, dest) \ + pci_read_config_byte(dev, vsec + 0x8, dest) + +#define CXL_READ_VSEC_STATUS(dev, vsec, dest) \ + pci_read_config_byte(dev, vsec + 0x9, dest) +#define CXL_STATUS_SECOND_PORT 0x80 +#define CXL_STATUS_MSI_X_FULL 0x40 +#define CXL_STATUS_MSI_X_SINGLE 0x20 +#define CXL_STATUS_FLASH_RW 0x08 +#define CXL_STATUS_FLASH_RO 0x04 +#define CXL_STATUS_LOADABLE_AFU 0x02 +#define CXL_STATUS_LOADABLE_PSL 0x01 +/* If we see these features we won't try to use the card */ +#define CXL_UNSUPPORTED_FEATURES \ + (CXL_STATUS_MSI_X_FULL | CXL_STATUS_MSI_X_SINGLE) + +#define CXL_READ_VSEC_MODE_CONTROL(dev, vsec, dest) \ + pci_read_config_byte(dev, vsec + 0xa, dest) +#define CXL_WRITE_VSEC_MODE_CONTROL(dev, vsec, val) \ + pci_write_config_byte(dev, vsec + 0xa, val) +#define CXL_VSEC_PROTOCOL_MASK 0xe0 +#define CXL_VSEC_PROTOCOL_1024TB 0x80 +#define CXL_VSEC_PROTOCOL_512TB 0x40 +#define CXL_VSEC_PROTOCOL_256TB 0x20 /* Power 8 uses this */ +#define CXL_VSEC_PROTOCOL_ENABLE 0x01 + +#define CXL_READ_VSEC_PSL_REVISION(dev, vsec, dest) \ + pci_read_config_word(dev, vsec + 0xc, dest) +#define CXL_READ_VSEC_CAIA_MINOR(dev, vsec, dest) \ + pci_read_config_byte(dev, vsec + 0xe, dest) +#define CXL_READ_VSEC_CAIA_MAJOR(dev, vsec, dest) \ + pci_read_config_byte(dev, vsec + 0xf, dest) +#define CXL_READ_VSEC_BASE_IMAGE(dev, vsec, dest) \ + pci_read_config_word(dev, vsec + 0x10, dest) + +#define CXL_READ_VSEC_IMAGE_STATE(dev, vsec, dest) \ + pci_read_config_byte(dev, vsec + 0x13, dest) +#define CXL_WRITE_VSEC_IMAGE_STATE(dev, vsec, val) \ + pci_write_config_byte(dev, vsec + 0x13, val) +#define CXL_VSEC_USER_IMAGE_LOADED 0x80 /* RO */ +#define CXL_VSEC_PERST_LOADS_IMAGE 0x20 /* RW */ +#define CXL_VSEC_PERST_SELECT_USER 0x10 /* RW */ + +#define CXL_READ_VSEC_AFU_DESC_OFF(dev, vsec, dest) \ + pci_read_config_dword(dev, vsec + 0x20, dest) +#define CXL_READ_VSEC_AFU_DESC_SIZE(dev, vsec, dest) \ + pci_read_config_dword(dev, vsec + 0x24, dest) +#define CXL_READ_VSEC_PS_OFF(dev, vsec, dest) \ + pci_read_config_dword(dev, vsec + 0x28, dest) +#define CXL_READ_VSEC_PS_SIZE(dev, vsec, dest) \ + pci_read_config_dword(dev, vsec + 0x2c, dest) + + +/* This works a little different than the p1/p2 register accesses to make it + * easier to pull out individual fields */ +#define AFUD_READ(afu, off) in_be64(afu->afu_desc_mmio + off) +#define EXTRACT_PPC_BIT(val, bit) (!!(val & PPC_BIT(bit))) +#define EXTRACT_PPC_BITS(val, bs, be) ((val & PPC_BITMASK(bs, be)) >> PPC_BITLSHIFT(be)) + +#define AFUD_READ_INFO(afu) AFUD_READ(afu, 0x0) +#define AFUD_NUM_INTS_PER_PROC(val) EXTRACT_PPC_BITS(val, 0, 15) +#define AFUD_NUM_PROCS(val) EXTRACT_PPC_BITS(val, 16, 31) +#define AFUD_NUM_CRS(val) EXTRACT_PPC_BITS(val, 32, 47) +#define AFUD_MULTIMODE(val) EXTRACT_PPC_BIT(val, 48) +#define AFUD_PUSH_BLOCK_TRANSFER(val) EXTRACT_PPC_BIT(val, 55) +#define AFUD_DEDICATED_PROCESS(val) EXTRACT_PPC_BIT(val, 59) +#define AFUD_AFU_DIRECTED(val) EXTRACT_PPC_BIT(val, 61) +#define AFUD_TIME_SLICED(val) EXTRACT_PPC_BIT(val, 63) +#define AFUD_READ_CR(afu) AFUD_READ(afu, 0x20) +#define AFUD_CR_LEN(val) EXTRACT_PPC_BITS(val, 8, 63) +#define AFUD_READ_CR_OFF(afu) AFUD_READ(afu, 0x28) +#define AFUD_READ_PPPSA(afu) AFUD_READ(afu, 0x30) +#define AFUD_PPPSA_PP(val) EXTRACT_PPC_BIT(val, 6) +#define AFUD_PPPSA_PSA(val) EXTRACT_PPC_BIT(val, 7) +#define AFUD_PPPSA_LEN(val) EXTRACT_PPC_BITS(val, 8, 63) +#define AFUD_READ_PPPSA_OFF(afu) AFUD_READ(afu, 0x38) +#define AFUD_READ_EB(afu) AFUD_READ(afu, 0x40) +#define AFUD_EB_LEN(val) EXTRACT_PPC_BITS(val, 8, 63) +#define AFUD_READ_EB_OFF(afu) AFUD_READ(afu, 0x48) + +static DEFINE_PCI_DEVICE_TABLE(cxl_pci_tbl) = { + { PCI_DEVICE(PCI_VENDOR_ID_IBM, 0x0477), }, + { PCI_DEVICE(PCI_VENDOR_ID_IBM, 0x044b), }, + { PCI_DEVICE(PCI_VENDOR_ID_IBM, 0x04cf), }, + { PCI_DEVICE_CLASS(0x120000, ~0), }, + + { } +}; +MODULE_DEVICE_TABLE(pci, cxl_pci_tbl); + + +/* + * Mostly using these wrappers to avoid confusion: + * priv 1 is BAR2, while priv 2 is BAR0 + */ +static inline resource_size_t p1_base(struct pci_dev *dev) +{ + return pci_resource_start(dev, 2); +} + +static inline resource_size_t p1_size(struct pci_dev *dev) +{ + return pci_resource_len(dev, 2); +} + +static inline resource_size_t p2_base(struct pci_dev *dev) +{ + return pci_resource_start(dev, 0); +} + +static inline resource_size_t p2_size(struct pci_dev *dev) +{ + return pci_resource_len(dev, 0); +} + +static int find_cxl_vsec(struct pci_dev *dev) +{ + int vsec = 0; + u16 val; + + while ((vsec = pci_find_next_ext_capability(dev, vsec, PCI_EXT_CAP_ID_VNDR))) { + pci_read_config_word(dev, vsec + 0x4, &val); + if (val == CXL_PCI_VSEC_ID) + return vsec; + } + return 0; + +} + +static void dump_cxl_config_space(struct pci_dev *dev) +{ + int vsec; + u32 val; + + dev_info(&dev->dev, "dump_cxl_config_space\n"); + + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &val); + dev_info(&dev->dev, "BAR0: %#.8x\n", val); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_1, &val); + dev_info(&dev->dev, "BAR1: %#.8x\n", val); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_2, &val); + dev_info(&dev->dev, "BAR2: %#.8x\n", val); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_3, &val); + dev_info(&dev->dev, "BAR3: %#.8x\n", val); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_4, &val); + dev_info(&dev->dev, "BAR4: %#.8x\n", val); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_5, &val); + dev_info(&dev->dev, "BAR5: %#.8x\n", val); + + dev_info(&dev->dev, "p1 regs: %#llx, len: %#llx\n", + p1_base(dev), p1_size(dev)); + dev_info(&dev->dev, "p2 regs: %#llx, len: %#llx\n", + p1_base(dev), p2_size(dev)); + dev_info(&dev->dev, "BAR 4/5: %#llx, len: %#llx\n", + pci_resource_start(dev, 4), pci_resource_len(dev, 4)); + + if (!(vsec = find_cxl_vsec(dev))) + return; + +#define show_reg(name, what) \ + dev_info(&dev->dev, "cxl vsec: %30s: %#x\n", name, what) + + pci_read_config_dword(dev, vsec + 0x0, &val); + show_reg("Cap ID", (val >> 0) & 0xffff); + show_reg("Cap Ver", (val >> 16) & 0xf); + show_reg("Next Cap Ptr", (val >> 20) & 0xfff); + pci_read_config_dword(dev, vsec + 0x4, &val); + show_reg("VSEC ID", (val >> 0) & 0xffff); + show_reg("VSEC Rev", (val >> 16) & 0xf); + show_reg("VSEC Length", (val >> 20) & 0xfff); + pci_read_config_dword(dev, vsec + 0x8, &val); + show_reg("Num AFUs", (val >> 0) & 0xff); + show_reg("Status", (val >> 8) & 0xff); + show_reg("Mode Control", (val >> 16) & 0xff); + show_reg("Reserved", (val >> 24) & 0xff); + pci_read_config_dword(dev, vsec + 0xc, &val); + show_reg("PSL Rev", (val >> 0) & 0xffff); + show_reg("CAIA Ver", (val >> 16) & 0xffff); + pci_read_config_dword(dev, vsec + 0x10, &val); + show_reg("Base Image Rev", (val >> 0) & 0xffff); + show_reg("Reserved", (val >> 16) & 0x0fff); + show_reg("Image Control", (val >> 28) & 0x3); + show_reg("Reserved", (val >> 30) & 0x1); + show_reg("Image Loaded", (val >> 31) & 0x1); + + pci_read_config_dword(dev, vsec + 0x14, &val); + show_reg("Reserved", val); + pci_read_config_dword(dev, vsec + 0x18, &val); + show_reg("Reserved", val); + pci_read_config_dword(dev, vsec + 0x1c, &val); + show_reg("Reserved", val); + + pci_read_config_dword(dev, vsec + 0x20, &val); + show_reg("AFU Descriptor Offset", val); + pci_read_config_dword(dev, vsec + 0x24, &val); + show_reg("AFU Descriptor Size", val); + pci_read_config_dword(dev, vsec + 0x28, &val); + show_reg("Problem State Offset", val); + pci_read_config_dword(dev, vsec + 0x2c, &val); + show_reg("Problem State Size", val); + + pci_read_config_dword(dev, vsec + 0x30, &val); + show_reg("Reserved", val); + pci_read_config_dword(dev, vsec + 0x34, &val); + show_reg("Reserved", val); + pci_read_config_dword(dev, vsec + 0x38, &val); + show_reg("Reserved", val); + pci_read_config_dword(dev, vsec + 0x3c, &val); + show_reg("Reserved", val); + + pci_read_config_dword(dev, vsec + 0x40, &val); + show_reg("PSL Programming Port", val); + pci_read_config_dword(dev, vsec + 0x44, &val); + show_reg("PSL Programming Control", val); + + pci_read_config_dword(dev, vsec + 0x48, &val); + show_reg("Reserved", val); + pci_read_config_dword(dev, vsec + 0x4c, &val); + show_reg("Reserved", val); + + pci_read_config_dword(dev, vsec + 0x50, &val); + show_reg("Flash Address Register", val); + pci_read_config_dword(dev, vsec + 0x54, &val); + show_reg("Flash Size Register", val); + pci_read_config_dword(dev, vsec + 0x58, &val); + show_reg("Flash Status/Control Register", val); + pci_read_config_dword(dev, vsec + 0x58, &val); + show_reg("Flash Data Port", val); + +#undef show_reg +} + +static void dump_afu_descriptor(struct cxl_afu *afu) +{ + u64 val; + +#define show_reg(name, what) \ + dev_info(&afu->dev, "afu desc: %30s: %#llx\n", name, what) + + val = AFUD_READ_INFO(afu); + show_reg("num_ints_per_process", AFUD_NUM_INTS_PER_PROC(val)); + show_reg("num_of_processes", AFUD_NUM_PROCS(val)); + show_reg("num_of_afu_CRs", AFUD_NUM_CRS(val)); + show_reg("req_prog_mode", val & 0xffffULL); + + val = AFUD_READ(afu, 0x8); + show_reg("Reserved", val); + val = AFUD_READ(afu, 0x10); + show_reg("Reserved", val); + val = AFUD_READ(afu, 0x18); + show_reg("Reserved", val); + + val = AFUD_READ_CR(afu); + show_reg("Reserved", (val >> (63-7)) & 0xff); + show_reg("AFU_CR_len", AFUD_CR_LEN(val)); + + val = AFUD_READ_CR_OFF(afu); + show_reg("AFU_CR_offset", val); + + val = AFUD_READ_PPPSA(afu); + show_reg("PerProcessPSA_control", (val >> (63-7)) & 0xff); + show_reg("PerProcessPSA Length", AFUD_PPPSA_LEN(val)); + + val = AFUD_READ_PPPSA_OFF(afu); + show_reg("PerProcessPSA_offset", val); + + val = AFUD_READ_EB(afu); + show_reg("Reserved", (val >> (63-7)) & 0xff); + show_reg("AFU_EB_len", AFUD_EB_LEN(val)); + + val = AFUD_READ_EB_OFF(afu); + show_reg("AFU_EB_offset", val); + +#undef show_reg +} + +static int init_implementation_adapter_regs(struct cxl *adapter, struct pci_dev *dev) +{ + struct device_node *np; + const __be32 *prop; + u64 psl_dsnctl; + u64 chipid; + + if (!(np = pnv_pci_to_phb_node(dev))) + return -ENODEV; + + while (np && !(prop = of_get_property(np, "ibm,chip-id", NULL))) + np = of_get_next_parent(np); + if (!np) + return -ENODEV; + chipid = be32_to_cpup(prop); + of_node_put(np); + + /* Tell PSL where to route data to */ + psl_dsnctl = 0x02E8900002000000ULL | (chipid << (63-5)); + cxl_p1_write(adapter, CXL_PSL_DSNDCTL, psl_dsnctl); + cxl_p1_write(adapter, CXL_PSL_RESLCKTO, 0x20000000200ULL); + /* snoop write mask */ + cxl_p1_write(adapter, CXL_PSL_SNWRALLOC, 0x00000000FFFFFFFFULL); + /* set fir_accum */ + cxl_p1_write(adapter, CXL_PSL_FIR_CNTL, 0x0800000000000000ULL); + /* for debugging with trace arrays */ + cxl_p1_write(adapter, CXL_PSL_TRACE, 0x0000FF7C00000000ULL); + + return 0; +} + +static int init_implementation_afu_regs(struct cxl_afu *afu) +{ + /* read/write masks for this slice */ + cxl_p1n_write(afu, CXL_PSL_APCALLOC_A, 0xFFFFFFFEFEFEFEFEULL); + /* APC read/write masks for this slice */ + cxl_p1n_write(afu, CXL_PSL_COALLOC_A, 0xFF000000FEFEFEFEULL); + /* for debugging with trace arrays */ + cxl_p1n_write(afu, CXL_PSL_SLICE_TRACE, 0x0000FFFF00000000ULL); + cxl_p1n_write(afu, CXL_PSL_RXCTL_A, 0xF000000000000000ULL); + + return 0; +} + +int cxl_setup_irq(struct cxl *adapter, unsigned int hwirq, + unsigned int virq) +{ + struct pci_dev *dev = to_pci_dev(adapter->dev.parent); + + return pnv_cxl_ioda_msi_setup(dev, hwirq, virq); +} + +int cxl_alloc_one_irq(struct cxl *adapter) +{ + struct pci_dev *dev = to_pci_dev(adapter->dev.parent); + + return pnv_cxl_alloc_hwirqs(dev, 1); +} + +void cxl_release_one_irq(struct cxl *adapter, int hwirq) +{ + struct pci_dev *dev = to_pci_dev(adapter->dev.parent); + + return pnv_cxl_release_hwirqs(dev, hwirq, 1); +} + +int cxl_alloc_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter, unsigned int num) +{ + struct pci_dev *dev = to_pci_dev(adapter->dev.parent); + + return pnv_cxl_alloc_hwirq_ranges(irqs, dev, num); +} + +void cxl_release_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter) +{ + struct pci_dev *dev = to_pci_dev(adapter->dev.parent); + + pnv_cxl_release_hwirq_ranges(irqs, dev); +} + +static int setup_cxl_bars(struct pci_dev *dev) +{ + /* Safety check in case we get backported to < 3.17 without M64 */ + if ((p1_base(dev) < 0x100000000ULL) || + (p2_base(dev) < 0x100000000ULL)) { + dev_err(&dev->dev, "ABORTING: M32 BAR assignment incompatible with CXL\n"); + return -ENODEV; + } + + /* + * BAR 4/5 has a special meaning for CXL and must be programmed with a + * special value corresponding to the CXL protocol address range. + * For POWER 8 that means bits 48:49 must be set to 10 + */ + pci_write_config_dword(dev, PCI_BASE_ADDRESS_4, 0x00000000); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_5, 0x00020000); + + return 0; +} + +/* pciex node: ibm,opal-m64-window = <0x3d058 0x0 0x3d058 0x0 0x8 0x0>; */ +static int switch_card_to_cxl(struct pci_dev *dev) +{ + int vsec; + u8 val; + int rc; + + dev_info(&dev->dev, "switch card to CXL\n"); + + if (!(vsec = find_cxl_vsec(dev))) { + dev_err(&dev->dev, "ABORTING: CXL VSEC not found!\n"); + return -ENODEV; + } + + if ((rc = CXL_READ_VSEC_MODE_CONTROL(dev, vsec, &val))) { + dev_err(&dev->dev, "failed to read current mode control: %i", rc); + return rc; + } + val &= ~CXL_VSEC_PROTOCOL_MASK; + val |= CXL_VSEC_PROTOCOL_256TB | CXL_VSEC_PROTOCOL_ENABLE; + if ((rc = CXL_WRITE_VSEC_MODE_CONTROL(dev, vsec, val))) { + dev_err(&dev->dev, "failed to enable CXL protocol: %i", rc); + return rc; + } + /* + * The CAIA spec (v0.12 11.6 Bi-modal Device Support) states + * we must wait 100ms after this mode switch before touching + * PCIe config space. + */ + msleep(100); + + return 0; +} + +static int cxl_map_slice_regs(struct cxl_afu *afu, struct cxl *adapter, struct pci_dev *dev) +{ + u64 p1n_base, p2n_base, afu_desc; + const u64 p1n_size = 0x100; + const u64 p2n_size = 0x1000; + + p1n_base = p1_base(dev) + 0x10000 + (afu->slice * p1n_size); + p2n_base = p2_base(dev) + (afu->slice * p2n_size); + afu->psn_phys = p2_base(dev) + (adapter->ps_off + (afu->slice * adapter->ps_size)); + afu_desc = p2_base(dev) + adapter->afu_desc_off + (afu->slice * adapter->afu_desc_size); + + if (!(afu->p1n_mmio = ioremap(p1n_base, p1n_size))) + goto err; + if (!(afu->p2n_mmio = ioremap(p2n_base, p2n_size))) + goto err1; + if (afu_desc) { + if (!(afu->afu_desc_mmio = ioremap(afu_desc, adapter->afu_desc_size))) + goto err2; + } + + return 0; +err2: + iounmap(afu->p2n_mmio); +err1: + iounmap(afu->p1n_mmio); +err: + dev_err(&afu->dev, "Error mapping AFU MMIO regions\n"); + return -ENOMEM; +} + +static void cxl_unmap_slice_regs(struct cxl_afu *afu) +{ + if (afu->p1n_mmio) + iounmap(afu->p2n_mmio); + if (afu->p1n_mmio) + iounmap(afu->p1n_mmio); +} + +static void cxl_release_afu(struct device *dev) +{ + struct cxl_afu *afu = to_cxl_afu(dev); + + pr_devel("cxl_release_afu\n"); + + kfree(afu); +} + +static struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice) +{ + struct cxl_afu *afu; + + if (!(afu = kzalloc(sizeof(struct cxl_afu), GFP_KERNEL))) + return NULL; + + afu->adapter = adapter; + afu->dev.parent = &adapter->dev; + afu->dev.release = cxl_release_afu; + afu->slice = slice; + idr_init(&afu->contexts_idr); + spin_lock_init(&afu->contexts_lock); + spin_lock_init(&afu->afu_cntl_lock); + mutex_init(&afu->spa_mutex); + + afu->prefault_mode = CXL_PREFAULT_NONE; + afu->irqs_max = afu->adapter->user_irqs; + + return afu; +} + +/* Expects AFU struct to have recently been zeroed out */ +static int cxl_read_afu_descriptor(struct cxl_afu *afu) +{ + u64 val; + + val = AFUD_READ_INFO(afu); + afu->pp_irqs = AFUD_NUM_INTS_PER_PROC(val); + afu->max_procs_virtualised = AFUD_NUM_PROCS(val); + + if (AFUD_AFU_DIRECTED(val)) + afu->modes_supported |= CXL_MODE_DIRECTED; + if (AFUD_DEDICATED_PROCESS(val)) + afu->modes_supported |= CXL_MODE_DEDICATED; + if (AFUD_TIME_SLICED(val)) + afu->modes_supported |= CXL_MODE_TIME_SLICED; + + val = AFUD_READ_PPPSA(afu); + afu->pp_size = AFUD_PPPSA_LEN(val) * 4096; + afu->psa = AFUD_PPPSA_PSA(val); + if ((afu->pp_psa = AFUD_PPPSA_PP(val))) + afu->pp_offset = AFUD_READ_PPPSA_OFF(afu); + + return 0; +} + +static int cxl_afu_descriptor_looks_ok(struct cxl_afu *afu) +{ + if (afu->psa && afu->adapter->ps_size < + (afu->pp_offset + afu->pp_size*afu->max_procs_virtualised)) { + dev_err(&afu->dev, "per-process PSA can't fit inside the PSA!\n"); + return -ENODEV; + } + + if (afu->pp_psa && (afu->pp_size < PAGE_SIZE)) + dev_warn(&afu->dev, "AFU uses < PAGE_SIZE per-process PSA!"); + + return 0; +} + +static int sanitise_afu_regs(struct cxl_afu *afu) +{ + u64 reg; + + /* + * Clear out any regs that contain either an IVTE or address or may be + * waiting on an acknowledgement to try to be a bit safer as we bring + * it online + */ + reg = cxl_p2n_read(afu, CXL_AFU_Cntl_An); + if ((reg & CXL_AFU_Cntl_An_ES_MASK) != CXL_AFU_Cntl_An_ES_Disabled) { + dev_warn(&afu->dev, "WARNING: AFU was not disabled: %#.16llx\n", reg); + if (cxl_afu_reset(afu)) + return -EIO; + if (cxl_afu_disable(afu)) + return -EIO; + if (cxl_psl_purge(afu)) + return -EIO; + } + cxl_p1n_write(afu, CXL_PSL_SPAP_An, 0x0000000000000000); + cxl_p1n_write(afu, CXL_PSL_IVTE_Limit_An, 0x0000000000000000); + cxl_p1n_write(afu, CXL_PSL_IVTE_Offset_An, 0x0000000000000000); + cxl_p1n_write(afu, CXL_PSL_AMBAR_An, 0x0000000000000000); + cxl_p1n_write(afu, CXL_PSL_SPOffset_An, 0x0000000000000000); + cxl_p1n_write(afu, CXL_HAURP_An, 0x0000000000000000); + cxl_p2n_write(afu, CXL_CSRP_An, 0x0000000000000000); + cxl_p2n_write(afu, CXL_AURP1_An, 0x0000000000000000); + cxl_p2n_write(afu, CXL_AURP0_An, 0x0000000000000000); + cxl_p2n_write(afu, CXL_SSTP1_An, 0x0000000000000000); + cxl_p2n_write(afu, CXL_SSTP0_An, 0x0000000000000000); + reg = cxl_p2n_read(afu, CXL_PSL_DSISR_An); + if (reg) { + dev_warn(&afu->dev, "AFU had pending DSISR: %#.16llx\n", reg); + if (reg & CXL_PSL_DSISR_TRANS) + cxl_p2n_write(afu, CXL_PSL_TFC_An, CXL_PSL_TFC_An_AE); + else + cxl_p2n_write(afu, CXL_PSL_TFC_An, CXL_PSL_TFC_An_A); + } + reg = cxl_p1n_read(afu, CXL_PSL_SERR_An); + if (reg) { + if (reg & ~0xffff) + dev_warn(&afu->dev, "AFU had pending SERR: %#.16llx\n", reg); + cxl_p1n_write(afu, CXL_PSL_SERR_An, reg & ~0xffff); + } + reg = cxl_p2n_read(afu, CXL_PSL_ErrStat_An); + if (reg) { + dev_warn(&afu->dev, "AFU had pending error status: %#.16llx\n", reg); + cxl_p2n_write(afu, CXL_PSL_ErrStat_An, reg); + } + + return 0; +} + +static int cxl_init_afu(struct cxl *adapter, int slice, struct pci_dev *dev) +{ + struct cxl_afu *afu; + bool free = true; + int rc; + + if (!(afu = cxl_alloc_afu(adapter, slice))) + return -ENOMEM; + + if ((rc = dev_set_name(&afu->dev, "afu%i.%i", adapter->adapter_num, slice))) + goto err1; + + if ((rc = cxl_map_slice_regs(afu, adapter, dev))) + goto err1; + + if ((rc = sanitise_afu_regs(afu))) + goto err2; + + /* We need to reset the AFU before we can read the AFU descriptor */ + if ((rc = cxl_afu_reset(afu))) + goto err2; + + if (cxl_verbose) + dump_afu_descriptor(afu); + + if ((rc = cxl_read_afu_descriptor(afu))) + goto err2; + + if ((rc = cxl_afu_descriptor_looks_ok(afu))) + goto err2; + + if ((rc = init_implementation_afu_regs(afu))) + goto err2; + + if ((rc = cxl_register_serr_irq(afu))) + goto err2; + + if ((rc = cxl_register_psl_irq(afu))) + goto err3; + + /* Don't care if this fails */ + cxl_debugfs_afu_add(afu); + + /* + * After we call this function we must not free the afu directly, even + * if it returns an error! + */ + if ((rc = cxl_register_afu(afu))) + goto err_put1; + + if ((rc = cxl_sysfs_afu_add(afu))) + goto err_put1; + + + if ((rc = cxl_afu_select_best_mode(afu))) + goto err_put2; + + adapter->afu[afu->slice] = afu; + + return 0; + +err_put2: + cxl_sysfs_afu_remove(afu); +err_put1: + device_unregister(&afu->dev); + free = false; + cxl_debugfs_afu_remove(afu); + cxl_release_psl_irq(afu); +err3: + cxl_release_serr_irq(afu); +err2: + cxl_unmap_slice_regs(afu); +err1: + if (free) + kfree(afu); + return rc; +} + +static void cxl_remove_afu(struct cxl_afu *afu) +{ + pr_devel("cxl_remove_afu\n"); + + if (!afu) + return; + + cxl_sysfs_afu_remove(afu); + cxl_debugfs_afu_remove(afu); + + spin_lock(&afu->adapter->afu_list_lock); + afu->adapter->afu[afu->slice] = NULL; + spin_unlock(&afu->adapter->afu_list_lock); + + cxl_context_detach_all(afu); + cxl_afu_deactivate_mode(afu); + + cxl_release_psl_irq(afu); + cxl_release_serr_irq(afu); + cxl_unmap_slice_regs(afu); + + device_unregister(&afu->dev); +} + + +static int cxl_map_adapter_regs(struct cxl *adapter, struct pci_dev *dev) +{ + if (pci_request_region(dev, 2, "priv 2 regs")) + goto err1; + if (pci_request_region(dev, 0, "priv 1 regs")) + goto err2; + + pr_devel("cxl_map_adapter_regs: p1: %#.16llx %#llx, p2: %#.16llx %#llx", + p1_base(dev), p1_size(dev), p2_base(dev), p2_size(dev)); + + if (!(adapter->p1_mmio = ioremap(p1_base(dev), p1_size(dev)))) + goto err3; + + if (!(adapter->p2_mmio = ioremap(p2_base(dev), p2_size(dev)))) + goto err4; + + return 0; + +err4: + iounmap(adapter->p1_mmio); + adapter->p1_mmio = NULL; +err3: + pci_release_region(dev, 0); +err2: + pci_release_region(dev, 2); +err1: + return -ENOMEM; +} + +static void cxl_unmap_adapter_regs(struct cxl *adapter) +{ + if (adapter->p1_mmio) + iounmap(adapter->p1_mmio); + if (adapter->p2_mmio) + iounmap(adapter->p2_mmio); +} + +static int cxl_read_vsec(struct cxl *adapter, struct pci_dev *dev) +{ + int vsec; + u32 afu_desc_off, afu_desc_size; + u32 ps_off, ps_size; + u16 vseclen; + u8 image_state; + + if (!(vsec = find_cxl_vsec(dev))) { + dev_err(&adapter->dev, "ABORTING: CXL VSEC not found!\n"); + return -ENODEV; + } + + CXL_READ_VSEC_LENGTH(dev, vsec, &vseclen); + if (vseclen < CXL_VSEC_MIN_SIZE) { + pr_err("ABORTING: CXL VSEC too short\n"); + return -EINVAL; + } + + CXL_READ_VSEC_STATUS(dev, vsec, &adapter->vsec_status); + CXL_READ_VSEC_PSL_REVISION(dev, vsec, &adapter->psl_rev); + CXL_READ_VSEC_CAIA_MAJOR(dev, vsec, &adapter->caia_major); + CXL_READ_VSEC_CAIA_MINOR(dev, vsec, &adapter->caia_minor); + CXL_READ_VSEC_BASE_IMAGE(dev, vsec, &adapter->base_image); + CXL_READ_VSEC_IMAGE_STATE(dev, vsec, &image_state); + adapter->user_image_loaded = !!(image_state & CXL_VSEC_USER_IMAGE_LOADED); + adapter->perst_loads_image = !!(image_state & CXL_VSEC_PERST_LOADS_IMAGE); + adapter->perst_select_user = !!(image_state & CXL_VSEC_PERST_SELECT_USER); + + CXL_READ_VSEC_NAFUS(dev, vsec, &adapter->slices); + CXL_READ_VSEC_AFU_DESC_OFF(dev, vsec, &afu_desc_off); + CXL_READ_VSEC_AFU_DESC_SIZE(dev, vsec, &afu_desc_size); + CXL_READ_VSEC_PS_OFF(dev, vsec, &ps_off); + CXL_READ_VSEC_PS_SIZE(dev, vsec, &ps_size); + + /* Convert everything to bytes, because there is NO WAY I'd look at the + * code a month later and forget what units these are in ;-) */ + adapter->ps_off = ps_off * 64 * 1024; + adapter->ps_size = ps_size * 64 * 1024; + adapter->afu_desc_off = afu_desc_off * 64 * 1024; + adapter->afu_desc_size = afu_desc_size *64 * 1024; + + /* Total IRQs - 1 PSL ERROR - #AFU*(1 slice error + 1 DSI) */ + adapter->user_irqs = pnv_cxl_get_irq_count(dev) - 1 - 2*adapter->slices; + + return 0; +} + +static int cxl_vsec_looks_ok(struct cxl *adapter, struct pci_dev *dev) +{ + if (adapter->vsec_status & CXL_STATUS_SECOND_PORT) + return -EBUSY; + + if (adapter->vsec_status & CXL_UNSUPPORTED_FEATURES) { + dev_err(&adapter->dev, "ABORTING: CXL requires unsupported features\n"); + return -EINVAL; + } + + if (!adapter->slices) { + /* Once we support dynamic reprogramming we can use the card if + * it supports loadable AFUs */ + dev_err(&adapter->dev, "ABORTING: Device has no AFUs\n"); + return -EINVAL; + } + + if (!adapter->afu_desc_off || !adapter->afu_desc_size) { + dev_err(&adapter->dev, "ABORTING: VSEC shows no AFU descriptors\n"); + return -EINVAL; + } + + if (adapter->ps_size > p2_size(dev) - adapter->ps_off) { + dev_err(&adapter->dev, "ABORTING: Problem state size larger than " + "available in BAR2: 0x%llx > 0x%llx\n", + adapter->ps_size, p2_size(dev) - adapter->ps_off); + return -EINVAL; + } + + return 0; +} + +static void cxl_release_adapter(struct device *dev) +{ + struct cxl *adapter = to_cxl_adapter(dev); + + pr_devel("cxl_release_adapter\n"); + + kfree(adapter); +} + +static struct cxl *cxl_alloc_adapter(struct pci_dev *dev) +{ + struct cxl *adapter; + + if (!(adapter = kzalloc(sizeof(struct cxl), GFP_KERNEL))) + return NULL; + + adapter->dev.parent = &dev->dev; + adapter->dev.release = cxl_release_adapter; + pci_set_drvdata(dev, adapter); + spin_lock_init(&adapter->afu_list_lock); + + return adapter; +} + +static int sanitise_adapter_regs(struct cxl *adapter) +{ + cxl_p1_write(adapter, CXL_PSL_ErrIVTE, 0x0000000000000000); + return cxl_tlb_slb_invalidate(adapter); +} + +static struct cxl *cxl_init_adapter(struct pci_dev *dev) +{ + struct cxl *adapter; + bool free = true; + int rc; + + + if (!(adapter = cxl_alloc_adapter(dev))) + return ERR_PTR(-ENOMEM); + + if ((rc = switch_card_to_cxl(dev))) + goto err1; + + if ((rc = cxl_alloc_adapter_nr(adapter))) + goto err1; + + if ((rc = dev_set_name(&adapter->dev, "card%i", adapter->adapter_num))) + goto err2; + + if ((rc = cxl_read_vsec(adapter, dev))) + goto err2; + + if ((rc = cxl_vsec_looks_ok(adapter, dev))) + goto err2; + + if ((rc = cxl_map_adapter_regs(adapter, dev))) + goto err2; + + if ((rc = sanitise_adapter_regs(adapter))) + goto err2; + + if ((rc = init_implementation_adapter_regs(adapter, dev))) + goto err3; + + if ((rc = pnv_phb_to_cxl(dev))) + goto err3; + + if ((rc = cxl_register_psl_err_irq(adapter))) + goto err3; + + /* Don't care if this one fails: */ + cxl_debugfs_adapter_add(adapter); + + /* + * After we call this function we must not free the adapter directly, + * even if it returns an error! + */ + if ((rc = cxl_register_adapter(adapter))) + goto err_put1; + + if ((rc = cxl_sysfs_adapter_add(adapter))) + goto err_put1; + + return adapter; + +err_put1: + device_unregister(&adapter->dev); + free = false; + cxl_debugfs_adapter_remove(adapter); + cxl_release_psl_err_irq(adapter); +err3: + cxl_unmap_adapter_regs(adapter); +err2: + cxl_remove_adapter_nr(adapter); +err1: + if (free) + kfree(adapter); + return ERR_PTR(rc); +} + +static void cxl_remove_adapter(struct cxl *adapter) +{ + struct pci_dev *pdev = to_pci_dev(adapter->dev.parent); + + pr_devel("cxl_release_adapter\n"); + + cxl_sysfs_adapter_remove(adapter); + cxl_debugfs_adapter_remove(adapter); + cxl_release_psl_err_irq(adapter); + cxl_unmap_adapter_regs(adapter); + cxl_remove_adapter_nr(adapter); + + device_unregister(&adapter->dev); + + pci_release_region(pdev, 0); + pci_release_region(pdev, 2); + pci_disable_device(pdev); +} + +static int cxl_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct cxl *adapter; + int slice; + int rc; + + pci_dev_get(dev); + + if (cxl_verbose) + dump_cxl_config_space(dev); + + if ((rc = setup_cxl_bars(dev))) + return rc; + + if ((rc = pci_enable_device(dev))) { + dev_err(&dev->dev, "pci_enable_device failed: %i\n", rc); + return rc; + } + + adapter = cxl_init_adapter(dev); + if (IS_ERR(adapter)) { + dev_err(&dev->dev, "cxl_init_adapter failed: %li\n", PTR_ERR(adapter)); + return PTR_ERR(adapter); + } + + for (slice = 0; slice < adapter->slices; slice++) { + if ((rc = cxl_init_afu(adapter, slice, dev))) + dev_err(&dev->dev, "AFU %i failed to initialise: %i\n", slice, rc); + } + + return 0; +} + +static void cxl_remove(struct pci_dev *dev) +{ + struct cxl *adapter = pci_get_drvdata(dev); + int afu; + + dev_warn(&dev->dev, "pci remove\n"); + + /* + * Lock to prevent someone grabbing a ref through the adapter list as + * we are removing it + */ + for (afu = 0; afu < adapter->slices; afu++) + cxl_remove_afu(adapter->afu[afu]); + cxl_remove_adapter(adapter); +} + +struct pci_driver cxl_pci_driver = { + .name = "cxl-pci", + .id_table = cxl_pci_tbl, + .probe = cxl_probe, + .remove = cxl_remove, +}; diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c new file mode 100644 index 0000000..ce7ec06 --- /dev/null +++ b/drivers/misc/cxl/sysfs.c @@ -0,0 +1,385 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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 <linux/kernel.h> +#include <linux/device.h> +#include <linux/sysfs.h> + +#include "cxl.h" + +#define to_afu_chardev_m(d) dev_get_drvdata(d) + +/********* Adapter attributes **********************************************/ + +static ssize_t caia_version_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl *adapter = to_cxl_adapter(device); + + return scnprintf(buf, PAGE_SIZE, "%i.%i\n", adapter->caia_major, + adapter->caia_minor); +} + +static ssize_t psl_revision_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl *adapter = to_cxl_adapter(device); + + return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->psl_rev); +} + +static ssize_t base_image_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl *adapter = to_cxl_adapter(device); + + return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->base_image); +} + +static ssize_t image_loaded_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl *adapter = to_cxl_adapter(device); + + if (adapter->user_image_loaded) + return scnprintf(buf, PAGE_SIZE, "user\n"); + return scnprintf(buf, PAGE_SIZE, "factory\n"); +} + +static struct device_attribute adapter_attrs[] = { + __ATTR_RO(caia_version), + __ATTR_RO(psl_revision), + __ATTR_RO(base_image), + __ATTR_RO(image_loaded), +}; + + +/********* AFU master specific attributes **********************************/ + +static ssize_t mmio_size_show_master(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_afu_chardev_m(device); + + return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->adapter->ps_size); +} + +static ssize_t pp_mmio_off_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_afu_chardev_m(device); + + return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->pp_offset); +} + +static ssize_t pp_mmio_len_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_afu_chardev_m(device); + + return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->pp_size); +} + +static struct device_attribute afu_master_attrs[] = { + __ATTR(mmio_size, S_IRUGO, mmio_size_show_master, NULL), + __ATTR_RO(pp_mmio_off), + __ATTR_RO(pp_mmio_len), +}; + + +/********* AFU attributes **************************************************/ + +static ssize_t mmio_size_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_cxl_afu(device); + + if (afu->pp_size) + return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->pp_size); + return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->adapter->ps_size); +} + +static ssize_t reset_store_afu(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cxl_afu *afu = to_cxl_afu(device); + int rc; + + /* Not safe to reset if it is currently in use */ + spin_lock(&afu->contexts_lock); + if (!idr_is_empty(&afu->contexts_idr)) { + rc = -EBUSY; + goto err; + } + + if ((rc = cxl_afu_reset(afu))) + goto err; + + rc = count; +err: + spin_unlock(&afu->contexts_lock); + return rc; +} + +static ssize_t irqs_min_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_cxl_afu(device); + + return scnprintf(buf, PAGE_SIZE, "%i\n", afu->pp_irqs); +} + +static ssize_t irqs_max_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_cxl_afu(device); + + return scnprintf(buf, PAGE_SIZE, "%i\n", afu->irqs_max); +} + +static ssize_t irqs_max_store(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cxl_afu *afu = to_cxl_afu(device); + ssize_t ret; + int irqs_max; + + ret = sscanf(buf, "%i", &irqs_max); + if (ret != 1) + return -EINVAL; + + if (irqs_max < afu->pp_irqs) + return -EINVAL; + + if (irqs_max > afu->adapter->user_irqs) + return -EINVAL; + + afu->irqs_max = irqs_max; + return count; +} + +static ssize_t modes_supported_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct cxl_afu *afu = to_cxl_afu(device); + char *p = buf, *end = buf + PAGE_SIZE; + + if (afu->modes_supported & CXL_MODE_DEDICATED) + p += scnprintf(p, end - p, "dedicated_process\n"); + if (afu->modes_supported & CXL_MODE_DIRECTED) + p += scnprintf(p, end - p, "afu_directed\n"); + return (p - buf); +} + +static ssize_t prefault_mode_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_cxl_afu(device); + + switch (afu->prefault_mode) { + case CXL_PREFAULT_WED: + return scnprintf(buf, PAGE_SIZE, "work_element_descriptor\n"); + case CXL_PREFAULT_ALL: + return scnprintf(buf, PAGE_SIZE, "all\n"); + default: + return scnprintf(buf, PAGE_SIZE, "none\n"); + } +} + +static ssize_t prefault_mode_store(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cxl_afu *afu = to_cxl_afu(device); + enum prefault_modes mode = -1; + + if (!strncmp(buf, "work_element_descriptor", 23)) + mode = CXL_PREFAULT_WED; + if (!strncmp(buf, "all", 3)) + mode = CXL_PREFAULT_ALL; + if (!strncmp(buf, "none", 4)) + mode = CXL_PREFAULT_NONE; + + if (mode == -1) + return -EINVAL; + + afu->prefault_mode = mode; + return count; +} + +static ssize_t mode_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl_afu *afu = to_cxl_afu(device); + + if (afu->current_mode == CXL_MODE_DEDICATED) + return scnprintf(buf, PAGE_SIZE, "dedicated_process\n"); + if (afu->current_mode == CXL_MODE_DIRECTED) + return scnprintf(buf, PAGE_SIZE, "afu_directed\n"); + return scnprintf(buf, PAGE_SIZE, "none\n"); +} + +static ssize_t mode_store(struct device *device, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cxl_afu *afu = to_cxl_afu(device); + int old_mode, mode = -1; + int rc = -EBUSY; + + /* can't change this if we have a user */ + spin_lock(&afu->contexts_lock); + if (!idr_is_empty(&afu->contexts_idr)) + goto err; + + if (!strncmp(buf, "dedicated_process", 17)) + mode = CXL_MODE_DEDICATED; + if (!strncmp(buf, "afu_directed", 12)) + mode = CXL_MODE_DIRECTED; + if (!strncmp(buf, "none", 4)) + mode = 0; + + if (mode == -1) { + rc = -EINVAL; + goto err; + } + + /* + * cxl_afu_deactivate_mode needs to be done outside the lock, prevent + * other contexts coming in before we are ready: + */ + old_mode = afu->current_mode; + afu->current_mode = 0; + afu->num_procs = 0; + + spin_unlock(&afu->contexts_lock); + + if ((rc = _cxl_afu_deactivate_mode(afu, old_mode))) + return rc; + if ((rc = cxl_afu_activate_mode(afu, mode))) + return rc; + + return count; +err: + spin_unlock(&afu->contexts_lock); + return rc; +} + +static ssize_t api_version_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%i\n", CXL_API_VERSION); +} + +static ssize_t api_version_compatible_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%i\n", CXL_API_VERSION_COMPATIBLE); +} + +static struct device_attribute afu_attrs[] = { + __ATTR_RO(mmio_size), + __ATTR_RO(irqs_min), + __ATTR_RW(irqs_max), + __ATTR_RO(modes_supported), + __ATTR_RW(mode), + __ATTR_RW(prefault_mode), + __ATTR_RO(api_version), + __ATTR_RO(api_version_compatible), + __ATTR(reset, S_IWUSR, NULL, reset_store_afu), +}; + + + +int cxl_sysfs_adapter_add(struct cxl *adapter) +{ + int i, rc; + + for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++) { + if ((rc = device_create_file(&adapter->dev, &adapter_attrs[i]))) + goto err; + } + return 0; +err: + for (i--; i >= 0; i--) + device_remove_file(&adapter->dev, &adapter_attrs[i]); + return rc; +} +void cxl_sysfs_adapter_remove(struct cxl *adapter) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++) + device_remove_file(&adapter->dev, &adapter_attrs[i]); +} + +int cxl_sysfs_afu_add(struct cxl_afu *afu) +{ + int i, rc; + + for (i = 0; i < ARRAY_SIZE(afu_attrs); i++) { + if ((rc = device_create_file(&afu->dev, &afu_attrs[i]))) + goto err; + } + + return 0; + +err: + for (i--; i >= 0; i--) + device_remove_file(&afu->dev, &afu_attrs[i]); + return rc; +} + +void cxl_sysfs_afu_remove(struct cxl_afu *afu) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(afu_attrs); i++) + device_remove_file(&afu->dev, &afu_attrs[i]); +} + +int cxl_sysfs_afu_m_add(struct cxl_afu *afu) +{ + int i, rc; + + for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++) { + if ((rc = device_create_file(afu->chardev_m, &afu_master_attrs[i]))) + goto err; + } + + return 0; + +err: + for (i--; i >= 0; i--) + device_remove_file(afu->chardev_m, &afu_master_attrs[i]); + return rc; +} + +void cxl_sysfs_afu_m_remove(struct cxl_afu *afu) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++) + device_remove_file(afu->chardev_m, &afu_master_attrs[i]); +} diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c index 5618b5f..f575a9b 100644 --- a/drivers/tty/hvc/hvc_vio.c +++ b/drivers/tty/hvc/hvc_vio.c @@ -452,7 +452,7 @@ void __init hvc_vio_init_early(void) return; #endif /* Check whether the user has requested a different console. */ - if (!strstr(cmd_line, "console=")) + if (!strstr(boot_command_line, "console=")) add_preferred_console("hvc", 0, NULL); hvc_instantiate(0, 0, ops); } diff --git a/include/linux/fsl_ifc.h b/include/linux/fsl_ifc.h index f49ddb1..84d60cb 100644 --- a/include/linux/fsl_ifc.h +++ b/include/linux/fsl_ifc.h @@ -781,13 +781,13 @@ struct fsl_ifc_regs { __be32 amask; u32 res4[0x2]; } amask_cs[FSL_IFC_BANK_COUNT]; - u32 res5[0x17]; + u32 res5[0x18]; struct { - __be32 csor_ext; __be32 csor; + __be32 csor_ext; u32 res6; } csor_cs[FSL_IFC_BANK_COUNT]; - u32 res7[0x19]; + u32 res7[0x18]; struct { __be32 ftim[4]; u32 res8[0x8]; diff --git a/include/misc/cxl.h b/include/misc/cxl.h new file mode 100644 index 0000000..975cc78 --- /dev/null +++ b/include/misc/cxl.h @@ -0,0 +1,48 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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. + */ + +#ifndef _MISC_CXL_H +#define _MISC_CXL_H + +#ifdef CONFIG_CXL_BASE + +#define CXL_IRQ_RANGES 4 + +struct cxl_irq_ranges { + irq_hw_number_t offset[CXL_IRQ_RANGES]; + irq_hw_number_t range[CXL_IRQ_RANGES]; +}; + +extern atomic_t cxl_use_count; + +static inline bool cxl_ctx_in_use(void) +{ + return (atomic_read(&cxl_use_count) != 0); +} + +static inline void cxl_ctx_get(void) +{ + atomic_inc(&cxl_use_count); +} + +static inline void cxl_ctx_put(void) +{ + atomic_dec(&cxl_use_count); +} + +void cxl_slbia(struct mm_struct *mm); + +#else /* CONFIG_CXL_BASE */ + +static inline bool cxl_ctx_in_use(void) { return false; } +static inline void cxl_slbia(struct mm_struct *mm) {} + +#endif /* CONFIG_CXL_BASE */ + +#endif diff --git a/include/uapi/Kbuild b/include/uapi/Kbuild index 81d2106..245aa6e 100644 --- a/include/uapi/Kbuild +++ b/include/uapi/Kbuild @@ -12,3 +12,4 @@ header-y += video/ header-y += drm/ header-y += xen/ header-y += scsi/ +header-y += misc/ diff --git a/include/uapi/misc/Kbuild b/include/uapi/misc/Kbuild new file mode 100644 index 0000000..e96cae7 --- /dev/null +++ b/include/uapi/misc/Kbuild @@ -0,0 +1,2 @@ +# misc Header export list +header-y += cxl.h diff --git a/include/uapi/misc/cxl.h b/include/uapi/misc/cxl.h new file mode 100644 index 0000000..cd6d789 --- /dev/null +++ b/include/uapi/misc/cxl.h @@ -0,0 +1,88 @@ +/* + * Copyright 2014 IBM Corp. + * + * 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. + */ + +#ifndef _UAPI_MISC_CXL_H +#define _UAPI_MISC_CXL_H + +#include <linux/types.h> +#include <linux/ioctl.h> + + +struct cxl_ioctl_start_work { + __u64 flags; + __u64 work_element_descriptor; + __u64 amr; + __s16 num_interrupts; + __s16 reserved1; + __s32 reserved2; + __u64 reserved3; + __u64 reserved4; + __u64 reserved5; + __u64 reserved6; +}; + +#define CXL_START_WORK_AMR 0x0000000000000001ULL +#define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL +#define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\ + CXL_START_WORK_NUM_IRQS) + +/* ioctl numbers */ +#define CXL_MAGIC 0xCA +#define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work) +#define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32) + +#define CXL_READ_MIN_SIZE 0x1000 /* 4K */ + +/* Events from read() */ +enum cxl_event_type { + CXL_EVENT_RESERVED = 0, + CXL_EVENT_AFU_INTERRUPT = 1, + CXL_EVENT_DATA_STORAGE = 2, + CXL_EVENT_AFU_ERROR = 3, +}; + +struct cxl_event_header { + __u16 type; + __u16 size; + __u16 process_element; + __u16 reserved1; +}; + +struct cxl_event_afu_interrupt { + __u16 flags; + __u16 irq; /* Raised AFU interrupt number */ + __u32 reserved1; +}; + +struct cxl_event_data_storage { + __u16 flags; + __u16 reserved1; + __u32 reserved2; + __u64 addr; + __u64 dsisr; + __u64 reserved3; +}; + +struct cxl_event_afu_error { + __u16 flags; + __u16 reserved1; + __u32 reserved2; + __u64 error; +}; + +struct cxl_event { + struct cxl_event_header header; + union { + struct cxl_event_afu_interrupt irq; + struct cxl_event_data_storage fault; + struct cxl_event_afu_error afu_error; + }; +}; + +#endif /* _UAPI_MISC_CXL_H */ diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile index 74a78ce..f6ff90a 100644 --- a/tools/testing/selftests/powerpc/Makefile +++ b/tools/testing/selftests/powerpc/Makefile @@ -13,7 +13,7 @@ CFLAGS := -Wall -O2 -flto -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CUR export CC CFLAGS -TARGETS = pmu copyloops mm tm +TARGETS = pmu copyloops mm tm primitives endif diff --git a/tools/testing/selftests/powerpc/primitives/Makefile b/tools/testing/selftests/powerpc/primitives/Makefile new file mode 100644 index 0000000..ea737ca --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/Makefile @@ -0,0 +1,17 @@ +CFLAGS += -I$(CURDIR) + +PROGS := load_unaligned_zeropad + +all: $(PROGS) + +$(PROGS): ../harness.c + +run_tests: all + @-for PROG in $(PROGS); do \ + ./$$PROG; \ + done; + +clean: + rm -f $(PROGS) *.o + +.PHONY: all run_tests clean diff --git a/tools/testing/selftests/powerpc/primitives/asm/asm-compat.h b/tools/testing/selftests/powerpc/primitives/asm/asm-compat.h new file mode 120000 index 0000000..b14255e --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/asm/asm-compat.h @@ -0,0 +1 @@ +../.././../../../../arch/powerpc/include/asm/asm-compat.h
\ No newline at end of file diff --git a/tools/testing/selftests/powerpc/primitives/asm/ppc-opcode.h b/tools/testing/selftests/powerpc/primitives/asm/ppc-opcode.h new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/asm/ppc-opcode.h diff --git a/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c b/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c new file mode 100644 index 0000000..d1b6475 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/load_unaligned_zeropad.c @@ -0,0 +1,147 @@ +/* + * Userspace test harness for load_unaligned_zeropad. Creates two + * pages and uses mprotect to prevent access to the second page and + * a SEGV handler that walks the exception tables and runs the fixup + * routine. + * + * The results are compared against a normal load that is that is + * performed while access to the second page is enabled via mprotect. + * + * Copyright (C) 2014 Anton Blanchard <anton@au.ibm.com>, 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. + */ + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <stdbool.h> +#include <signal.h> +#include <unistd.h> +#include <sys/mman.h> + +#define FIXUP_SECTION ".ex_fixup" + +#include "word-at-a-time.h" + +#include "utils.h" + + +static int page_size; +static char *mem_region; + +static int protect_region(void) +{ + if (mprotect(mem_region + page_size, page_size, PROT_NONE)) { + perror("mprotect"); + return 1; + } + + return 0; +} + +static int unprotect_region(void) +{ + if (mprotect(mem_region + page_size, page_size, PROT_READ|PROT_WRITE)) { + perror("mprotect"); + return 1; + } + + return 0; +} + +extern char __start___ex_table[]; +extern char __stop___ex_table[]; + +#if defined(__powerpc64__) +#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.gp_regs[PT_NIP] +#elif defined(__powerpc__) +#define UCONTEXT_NIA(UC) (UC)->uc_mcontext.uc_regs->gregs[PT_NIP] +#else +#error implement UCONTEXT_NIA +#endif + +static int segv_error; + +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; + + while (ex_p < (unsigned long *)__stop___ex_table) { + unsigned long insn, fixup; + + insn = *ex_p++; + fixup = *ex_p++; + + if (insn == *ip) { + *ip = fixup; + return; + } + } + + printf("No exception table match for NIA %lx ADDR %lx\n", *ip, addr); + segv_error++; +} + +static void setup_segv_handler(void) +{ + struct sigaction action; + + memset(&action, 0, sizeof(action)); + action.sa_sigaction = segv_handler; + action.sa_flags = SA_SIGINFO; + sigaction(SIGSEGV, &action, NULL); +} + +static int do_one_test(char *p, int page_offset) +{ + unsigned long should; + unsigned long got; + + FAIL_IF(unprotect_region()); + should = *(unsigned long *)p; + FAIL_IF(protect_region()); + + got = load_unaligned_zeropad(p); + + if (should != got) + printf("offset %u load_unaligned_zeropad returned 0x%lx, should be 0x%lx\n", page_offset, got, should); + + return 0; +} + +static int test_body(void) +{ + unsigned long i; + + page_size = getpagesize(); + mem_region = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE, + MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + + FAIL_IF(mem_region == MAP_FAILED); + + for (i = 0; i < page_size; i++) + mem_region[i] = i; + + memset(mem_region+page_size, 0, page_size); + + setup_segv_handler(); + + for (i = 0; i < page_size; i++) + FAIL_IF(do_one_test(mem_region+i, i)); + + FAIL_IF(segv_error); + + return 0; +} + +int main(void) +{ + return test_harness(test_body, "load_unaligned_zeropad"); +} diff --git a/tools/testing/selftests/powerpc/primitives/word-at-a-time.h b/tools/testing/selftests/powerpc/primitives/word-at-a-time.h new file mode 120000 index 0000000..eb74401 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/word-at-a-time.h @@ -0,0 +1 @@ +../../../../../arch/powerpc/include/asm/word-at-a-time.h
\ No newline at end of file |
