| 1 | /*␊ |
| 2 | * Copyright 2008 Islam Ahmed Zaid. All rights reserved. <azismed@gmail.com>␊ |
| 3 | * AsereBLN: 2009: cleanup and bugfix␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | #ifndef __LIBSAIO_CPU_H␊ |
| 7 | #define __LIBSAIO_CPU_H␊ |
| 8 | ␊ |
| 9 | #include "libsaio.h"␊ |
| 10 | ␊ |
| 11 | extern void scan_cpu(void);␊ |
| 12 | ␊ |
| 13 | #define␉MSR_IA32_PERF_STATUS␉0x198␊ |
| 14 | #define MSR_IA32_PERF_CONTROL␉0x199␊ |
| 15 | #define MSR_IA32_EXT_CONFIG␉␉0x00EE␊ |
| 16 | #define MSR_FLEX_RATIO␉␉␉0x194␊ |
| 17 | #define␉MSR_PLATFORM_INFO␉␉0xCE␊ |
| 18 | #define MSR_TURBO_RATIO_LIMIT␉0x1AD␊ |
| 19 | #define MSR_IA32_BIOS_SIGN_ID 0x08B␊ |
| 20 | #define MSR_CORE_THREAD_COUNT 0x035␊ |
| 21 | #define K8_FIDVID_STATUS␉␉0xC0010042␊ |
| 22 | #define K10_COFVID_STATUS␉␉0xC0010071␊ |
| 23 | #define MSR_IA32_MISC_ENABLE 0x000001A0␊ |
| 24 | ␊ |
| 25 | #define DEFAULT_FSB␉␉100000 /* for now, hardcoding 100MHz for old CPUs */␊ |
| 26 | ␊ |
| 27 | // DFE: This constant comes from older xnu:␊ |
| 28 | #define CLKNUM␉␉␉1193182␉␉/* formerly 1193167 */␊ |
| 29 | ␊ |
| 30 | // DFE: These two constants come from Linux except CLOCK_TICK_RATE replaced with CLKNUM␊ |
| 31 | #define CALIBRATE_TIME_MSEC␉30␉␉/* 30 msecs */␊ |
| 32 | #define CALIBRATE_LATCH␉␉((CLKNUM * CALIBRATE_TIME_MSEC + 1000/2)/1000)␊ |
| 33 | ␊ |
| 34 | static inline uint64_t rdtsc64(void)␊ |
| 35 | {␊ |
| 36 | ␉uint64_t ret;␊ |
| 37 | ␉__asm__ volatile("rdtsc" : "=A" (ret));␊ |
| 38 | ␉return ret;␊ |
| 39 | }␊ |
| 40 | ␊ |
| 41 | static inline uint64_t rdmsr64(uint32_t msr)␊ |
| 42 | {␊ |
| 43 | uint64_t ret;␊ |
| 44 | __asm__ volatile("rdmsr" : "=A" (ret) : "c" (msr));␊ |
| 45 | return ret;␊ |
| 46 | }␊ |
| 47 | ␊ |
| 48 | static inline void wrmsr64(uint32_t msr, uint64_t val)␊ |
| 49 | {␊ |
| 50 | ␉__asm__ volatile("wrmsr" : : "c" (msr), "A" (val));␊ |
| 51 | }␊ |
| 52 | ␊ |
| 53 | static inline void intel_waitforsts(void) {␊ |
| 54 | ␉uint32_t inline_timeout = 100000;␊ |
| 55 | ␉while (rdmsr64(MSR_IA32_PERF_STATUS) & (1 << 21)) { if (!inline_timeout--) break; }␊ |
| 56 | }␊ |
| 57 | ␊ |
| 58 | static inline void do_cpuid2(uint32_t selector, uint32_t selector2, uint32_t *data)␊ |
| 59 | {␊ |
| 60 | ␉asm volatile ("cpuid"␊ |
| 61 | ␉␉␉␉ : "=a" (data[0]),␊ |
| 62 | ␉␉␉␉ "=b" (data[1]),␊ |
| 63 | ␉␉␉␉ "=c" (data[2]),␊ |
| 64 | ␉␉␉␉ "=d" (data[3])␊ |
| 65 | ␉␉␉␉ : "a" (selector), "c" (selector2),␊ |
| 66 | ␉␉␉␉ "b" (0),␊ |
| 67 | ␉␉␉␉ "d" (0));␊ |
| 68 | }␊ |
| 69 | ␊ |
| 70 | #endif /* !__LIBSAIO_CPU_H */␊ |
| 71 | |
