summaryrefslogtreecommitdiff
path: root/arch/arch-x86-common.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arch-x86-common.h')
-rw-r--r--arch/arch-x86-common.h77
1 files changed, 0 insertions, 77 deletions
diff --git a/arch/arch-x86-common.h b/arch/arch-x86-common.h
deleted file mode 100644
index cbf66b8d..00000000
--- a/arch/arch-x86-common.h
+++ /dev/null
@@ -1,77 +0,0 @@
-#ifndef FIO_ARCH_X86_COMMON
-#define FIO_ARCH_X86_COMMON
-
-#include <string.h>
-
-static inline void cpuid(unsigned int op,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- *eax = op;
- *ecx = 0;
- do_cpuid(eax, ebx, ecx, edx);
-}
-
-#define ARCH_HAVE_INIT
-
-extern int tsc_reliable;
-extern int arch_random;
-
-static inline void arch_init_intel(unsigned int level)
-{
- unsigned int eax, ebx, ecx = 0, edx;
-
- /*
- * Check for TSC
- */
- eax = 1;
- do_cpuid(&eax, &ebx, &ecx, &edx);
- if (!(edx & (1U << 4)))
- return;
-
- /*
- * Check for constant rate and synced (across cores) TSC
- */
- eax = 0x80000007;
- do_cpuid(&eax, &ebx, &ecx, &edx);
- tsc_reliable = (edx & (1U << 8)) != 0;
-
- /*
- * Check for FDRAND
- */
- eax = 0x1;
- do_cpuid(&eax, &ebx, &ecx, &edx);
- arch_random = (ecx & (1U << 30)) != 0;
-}
-
-static inline void arch_init_amd(unsigned int level)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(0x80000000, &eax, &ebx, &ecx, &edx);
- if (eax < 0x80000007)
- return;
-
- cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
- tsc_reliable = (edx & (1U << 8)) != 0;
-}
-
-static inline void arch_init(char *envp[])
-{
- unsigned int level;
- char str[13];
-
- arch_random = tsc_reliable = 0;
-
- cpuid(0, &level, (unsigned int *) &str[0],
- (unsigned int *) &str[8],
- (unsigned int *) &str[4]);
-
- str[12] = '\0';
- if (!strcmp(str, "GenuineIntel"))
- arch_init_intel(level);
- else if (!strcmp(str, "AuthenticAMD"))
- arch_init_amd(level);
-}
-
-#endif