diff options
author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-30 12:31:03 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 12:31:03 (GMT) |
commit | c758ecf62ad94ddfeb4e7d8a5498bdcb2e3c85db (patch) | |
tree | 6a7b8b629bbe935c78cf3933b0cfe25253c563a9 /include/asm-x86 | |
parent | 4e87173eacfd0d798aeeba14026893797826bc93 (diff) | |
download | linux-fsl-qoriq-c758ecf62ad94ddfeb4e7d8a5498bdcb2e3c85db.tar.xz |
x86: unify cpuid functions
cpuid is not very different between i386 and x86_64.
We move away the x86_64 version from msr.h, and
unify them at processor.h, where they belong.
cpuid() paravirt then comes for free.
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86')
-rw-r--r-- | include/asm-x86/msr.h | 67 | ||||
-rw-r--r-- | include/asm-x86/processor.h | 78 | ||||
-rw-r--r-- | include/asm-x86/processor_32.h | 69 |
3 files changed, 78 insertions, 136 deletions
diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h index 5c95d0b..0648b2d 100644 --- a/include/asm-x86/msr.h +++ b/include/asm-x86/msr.h @@ -203,73 +203,6 @@ static inline int wrmsr_safe(u32 __msr, u32 __low, u32 __high) : "c" (counter)) -static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, - unsigned int *ecx, unsigned int *edx) -{ - __asm__("cpuid" - : "=a" (*eax), - "=b" (*ebx), - "=c" (*ecx), - "=d" (*edx) - : "0" (op)); -} - -/* Some CPUID calls want 'count' to be placed in ecx */ -static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx, - int *edx) -{ - __asm__("cpuid" - : "=a" (*eax), - "=b" (*ebx), - "=c" (*ecx), - "=d" (*edx) - : "0" (op), "c" (count)); -} - -/* - * CPUID functions returning a single datum - */ -static inline unsigned int cpuid_eax(unsigned int op) -{ - unsigned int eax; - - __asm__("cpuid" - : "=a" (eax) - : "0" (op) - : "bx", "cx", "dx"); - return eax; -} -static inline unsigned int cpuid_ebx(unsigned int op) -{ - unsigned int eax, ebx; - - __asm__("cpuid" - : "=a" (eax), "=b" (ebx) - : "0" (op) - : "cx", "dx" ); - return ebx; -} -static inline unsigned int cpuid_ecx(unsigned int op) -{ - unsigned int eax, ecx; - - __asm__("cpuid" - : "=a" (eax), "=c" (ecx) - : "0" (op) - : "bx", "dx" ); - return ecx; -} -static inline unsigned int cpuid_edx(unsigned int op) -{ - unsigned int eax, edx; - - __asm__("cpuid" - : "=a" (eax), "=d" (edx) - : "0" (op) - : "bx", "cx"); - return edx; -} - #ifdef __KERNEL__ /* wrmsr with exception handling */ diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h index 46e1c04..dea81b7 100644 --- a/include/asm-x86/processor.h +++ b/include/asm-x86/processor.h @@ -1,5 +1,83 @@ +#ifndef __ASM_X86_PROCESSOR_H +#define __ASM_X86_PROCESSOR_H + +static inline void native_cpuid(unsigned int *eax, unsigned int *ebx, + unsigned int *ecx, unsigned int *edx) +{ + /* ecx is often an input as well as an output. */ + __asm__("cpuid" + : "=a" (*eax), + "=b" (*ebx), + "=c" (*ecx), + "=d" (*edx) + : "0" (*eax), "2" (*ecx)); +} + + #ifdef CONFIG_X86_32 # include "processor_32.h" #else # include "processor_64.h" #endif + +#ifndef CONFIG_PARAVIRT +#define __cpuid native_cpuid +#endif + +/* + * Generic CPUID function + * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx + * resulting in stale register contents being returned. + */ +static inline void cpuid(unsigned int op, + unsigned int *eax, unsigned int *ebx, + unsigned int *ecx, unsigned int *edx) +{ + *eax = op; + *ecx = 0; + __cpuid(eax, ebx, ecx, edx); +} + +/* Some CPUID calls want 'count' to be placed in ecx */ +static inline void cpuid_count(unsigned int op, int count, + unsigned int *eax, unsigned int *ebx, + unsigned int *ecx, unsigned int *edx) +{ + *eax = op; + *ecx = count; + __cpuid(eax, ebx, ecx, edx); +} + +/* + * CPUID functions returning a single datum + */ +static inline unsigned int cpuid_eax(unsigned int op) +{ + unsigned int eax, ebx, ecx, edx; + + cpuid(op, &eax, &ebx, &ecx, &edx); + return eax; +} +static inline unsigned int cpuid_ebx(unsigned int op) +{ + unsigned int eax, ebx, ecx, edx; + + cpuid(op, &eax, &ebx, &ecx, &edx); + return ebx; +} +static inline unsigned int cpuid_ecx(unsigned int op) +{ + unsigned int eax, ebx, ecx, edx; + + cpuid(op, &eax, &ebx, &ecx, &edx); + return ecx; +} +static inline unsigned int cpuid_edx(unsigned int op) +{ + unsigned int eax, ebx, ecx, edx; + + cpuid(op, &eax, &ebx, &ecx, &edx); + return edx; +} + +#endif diff --git a/include/asm-x86/processor_32.h b/include/asm-x86/processor_32.h index 6846cc3..0d83da1 100644 --- a/include/asm-x86/processor_32.h +++ b/include/asm-x86/processor_32.h @@ -133,18 +133,6 @@ extern void detect_ht(struct cpuinfo_x86 *c); static inline void detect_ht(struct cpuinfo_x86 *c) {} #endif -static inline void native_cpuid(unsigned int *eax, unsigned int *ebx, - unsigned int *ecx, unsigned int *edx) -{ - /* ecx is often an input as well as an output. */ - __asm__("cpuid" - : "=a" (*eax), - "=b" (*ebx), - "=c" (*ecx), - "=d" (*edx) - : "0" (*eax), "2" (*ecx)); -} - #define load_cr3(pgdir) write_cr3(__pa(pgdir)) /* @@ -580,7 +568,6 @@ static inline void native_set_iopl_mask(unsigned mask) #include <asm/paravirt.h> #else #define paravirt_enabled() 0 -#define __cpuid native_cpuid static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread) { @@ -598,62 +585,6 @@ static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread #define set_iopl_mask native_set_iopl_mask #endif /* CONFIG_PARAVIRT */ -/* - * Generic CPUID function - * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx - * resulting in stale register contents being returned. - */ -static inline void cpuid(unsigned int op, - unsigned int *eax, unsigned int *ebx, - unsigned int *ecx, unsigned int *edx) -{ - *eax = op; - *ecx = 0; - __cpuid(eax, ebx, ecx, edx); -} - -/* Some CPUID calls want 'count' to be placed in ecx */ -static inline void cpuid_count(unsigned int op, int count, - unsigned int *eax, unsigned int *ebx, - unsigned int *ecx, unsigned int *edx) -{ - *eax = op; - *ecx = count; - __cpuid(eax, ebx, ecx, edx); -} - -/* - * CPUID functions returning a single datum - */ -static inline unsigned int cpuid_eax(unsigned int op) -{ - unsigned int eax, ebx, ecx, edx; - - cpuid(op, &eax, &ebx, &ecx, &edx); - return eax; -} -static inline unsigned int cpuid_ebx(unsigned int op) -{ - unsigned int eax, ebx, ecx, edx; - - cpuid(op, &eax, &ebx, &ecx, &edx); - return ebx; -} -static inline unsigned int cpuid_ecx(unsigned int op) -{ - unsigned int eax, ebx, ecx, edx; - - cpuid(op, &eax, &ebx, &ecx, &edx); - return ecx; -} -static inline unsigned int cpuid_edx(unsigned int op) -{ - unsigned int eax, ebx, ecx, edx; - - cpuid(op, &eax, &ebx, &ecx, &edx); - return edx; -} - /* generic versions from gas */ #define GENERIC_NOP1 ".byte 0x90\n" #define GENERIC_NOP2 ".byte 0x89,0xf6\n" |