From e7891c733f9b26c851edde50cf886a30bd133dbd Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 22 May 2008 14:35:21 -0700 Subject: PCI/x86: write_pci_config_byte fix offset also add write_pci_config_16 Signed-off-by: Yinghai Lu Signed-off-by: Jesse Barnes --- include/asm-x86/pci-direct.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/pci-direct.h b/include/asm-x86/pci-direct.h index 5b21485..7bd40b4 100644 --- a/include/asm-x86/pci-direct.h +++ b/include/asm-x86/pci-direct.h @@ -11,6 +11,7 @@ extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset); extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset); extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val); extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val); +extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val); extern int early_pci_allowed(void); -- cgit v1.1 From e3f2baebf4209b5927e23fa65d5977d31db936b3 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 22 May 2008 14:35:11 -0700 Subject: PCI/x86: early dump pci conf space v2 Allows us to dump PCI space before any kernel changes have been made. Signed-off-by: Yinghai Lu Signed-off-by: Jesse Barnes --- include/asm-x86/pci-direct.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/pci-direct.h b/include/asm-x86/pci-direct.h index 7bd40b4..80c775d 100644 --- a/include/asm-x86/pci-direct.h +++ b/include/asm-x86/pci-direct.h @@ -15,4 +15,7 @@ extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val); extern int early_pci_allowed(void); +extern unsigned int pci_early_dump_regs; +extern void early_dump_pci_device(u8 bus, u8 slot, u8 func); +extern void early_dump_pci_devices(void); #endif -- cgit v1.1 From c1e3b377ad48febba6f91b8ae42c44ee4d4ab45e Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Tue, 24 Jun 2008 17:58:53 +0800 Subject: ACPI: Create "idle=halt" bootparam "idle=halt" limits the idle loop to using the halt instruction. No MWAIT, no IO accesses, no C-states deeper than C1. If something is broken in the idle code, "idle=halt" is a less severe workaround than "idle=poll" which disables all power savings. Signed-off-by: Zhao Yakui Signed-off-by: Len Brown Signed-off-by: Andi Kleen --- include/asm-x86/processor.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h index 7f73827..bc22162 100644 --- a/include/asm-x86/processor.h +++ b/include/asm-x86/processor.h @@ -727,6 +727,7 @@ extern int force_mwait; extern void select_idle_routine(const struct cpuinfo_x86 *c); extern unsigned long boot_option_idle_override; +extern unsigned long idle_halt; extern void enable_sep_cpu(void); extern int sysenter_setup(void); -- cgit v1.1 From da5e09a1b3e5a9fc0b15a3feb64e921ccc55ba74 Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Tue, 24 Jun 2008 18:01:09 +0800 Subject: ACPI : Create "idle=nomwait" bootparam "idle=nomwait" disables the use of the MWAIT instruction from both C1 (C1_FFH) and deeper (C2C3_FFH) C-states. When MWAIT is unavailable, the BIOS and OS generally negotiate to use the HALT instruction for C1, and use IO accesses for deeper C-states. This option is useful for power and performance comparisons, and also to work around BIOS bugs where broken MWAIT support is advertised. http://bugzilla.kernel.org/show_bug.cgi?id=10807 http://bugzilla.kernel.org/show_bug.cgi?id=10914 Signed-off-by: Zhao Yakui Signed-off-by: Li Shaohua Signed-off-by: Len Brown Signed-off-by: Andi Kleen --- include/asm-x86/processor.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h index bc22162..55402d2 100644 --- a/include/asm-x86/processor.h +++ b/include/asm-x86/processor.h @@ -728,6 +728,7 @@ extern void select_idle_routine(const struct cpuinfo_x86 *c); extern unsigned long boot_option_idle_override; extern unsigned long idle_halt; +extern unsigned long idle_nomwait; extern void enable_sep_cpu(void); extern int sysenter_setup(void); -- cgit v1.1 From 2567d71cc7acd99f0a0dd02e17fe17fd7df7b30c Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Tue, 15 Jul 2008 15:02:27 +1000 Subject: x86: fix asm/e820.h for userspace inclusion MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit asm-x86/e820.h is included from userspace. 'x86: make e820.c to have common functions' (b79cd8f1268bab57ff85b19d131f7f23deab2dee) broke it: make -C Documentation/lguest cc -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include lguest.c -lz -o lguest In file included from ../../include/asm-x86/bootparam.h:8, from lguest.c:45: ../../include/asm/e820.h:66: error: expected ‘)’ before ‘start’ ../../include/asm/e820.h:67: error: expected ‘)’ before ‘start’ ../../include/asm/e820.h:68: error: expected ‘)’ before ‘start’ ../../include/asm/e820.h:72: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘e820_update_range’ ... Signed-off-by: Rusty Russell Cc: Yinghai Lu Signed-off-by: Ingo Molnar --- include/asm-x86/e820.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/asm-x86') diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h index 33e793e..06633b0 100644 --- a/include/asm-x86/e820.h +++ b/include/asm-x86/e820.h @@ -59,6 +59,7 @@ struct e820map { struct e820entry map[E820_X_MAX]; }; +#ifdef __KERNEL__ /* see comment in arch/x86/kernel/e820.c */ extern struct e820map e820; extern struct e820map e820_saved; @@ -115,7 +116,7 @@ extern void setup_memory_map(void); extern char *default_machine_specific_memory_setup(void); extern char *machine_specific_memory_setup(void); extern char *memory_setup(void); - +#endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #define ISA_START_ADDRESS 0xa0000 -- cgit v1.1