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/*
* cpuid.h --
*
* contains the data structures required for CPUID
* implementation.
*
*/
#ifndef _CPUID_H_
#define _CPUID_H_
#include "stdint.h"
#include "defs.h"
#include "smp.h"
#define CPUID_EXTENDED_BASE 0x80000000
#define CPUID_EXTENDED_FEATURE 0x80000001
#define CPUID_EXTENDED_BRAND1 0x80000002
#define CPUID_EXTENDED_BRAND2 0x80000003
#define CPUID_EXTENDED_BRAND3 0x80000004
#define CPUID_VENDOR_LENGTH 3 /* 3 GPRs hold vendor ID */
#define CPUID_VENDOR_STR_LENGTH (CPUID_VENDOR_LENGTH * sizeof(uint32_t) + 1)
#define CPUID_BRAND_LENGTH 12 /* 12 GPRs hold vendor ID */
#define CPUID_BRAND_STR_LENGTH (CPUID_BRAND_LENGTH * sizeof(uint32_t) + 1)
#define CPUID_FAMILY(_eax) (((_eax) >> 8) & 0xf)
/* Intel CPU Family */
#define CPUID_FAMILY_486 4
#define CPUID_FAMILY_P5 5
#define CPUID_FAMILY_P6 6
#define CPUID_FAMILY_EXTENDED 15
#define CPUID_EXTENDED_FAMILY(_eax) (((_eax) >> 20) & 0xff)
#define CPUID_EXTENDED_FAMILY_PENTIUM4 0
#define CPUID_EXTENDED_FAMILY_OPTERON 0
#define CPUID_FAMILY_IS_OPTERON(_eax) \
(CPUID_FAMILY(_eax) == CPUID_FAMILY_EXTENDED && \
CPUID_EXTENDED_FAMILY(_eax) == CPUID_EXTENDED_FAMILY_OPTERON)
#define CPUID_FEATURE_COMMON_ID1EDX_HT 0x10000000 /* 28 */
typedef struct {
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
} cpuid_t;
/* cached CPUID data for CPUID(0) and CPUID(0x80000000) */
extern cpuid_t cpuid_data0;
extern cpuid_t cpuid_data80;
static inline unsigned
cpuid_max_func()
{
return cpuid_data0.eax;
}
static inline unsigned
cpuid_max_ext_func()
{
return cpuid_data80.eax;
}
/* Typedef for storing the CPUID Vendor String */
typedef union {
/* Note: the extra byte in the char array is for '\0'. */
char char_array[CPUID_VENDOR_STR_LENGTH];
uint32_t uint32_array[CPUID_VENDOR_LENGTH];
} cpuid_vendor_string_t;
/* Typedef for storing the CPUID Brand String */
typedef union {
/* Note: the extra byte in the char array is for '\0'. */
char char_array[CPUID_BRAND_STR_LENGTH];
uint32_t uint32_array[CPUID_BRAND_LENGTH];
} cpuid_brand_string_t;
/* Typedef for storing CPUID Version */
typedef union {
uint32_t flat;
struct {
uint32_t stepping:4; /* Bit 0 */
uint32_t model:4;
uint32_t family:4;
uint32_t processorType:2;
uint32_t reserved1514:2;
uint32_t extendedModel:4;
uint32_t extendedFamily:8;
uint32_t reserved3128:4; /* Bit 31 */
} bits;
} cpuid_version_t;
/* Typedef for storing CPUID Processor Information */
typedef union {
uint32_t flat;
struct {
uint32_t brandIndex:8; /* Bit 0 */
uint32_t cflushLineSize:8;
uint32_t logicalProcessorCount:8;
uint32_t apicID:8; /* Bit 31 */
} bits;
} cpuid_proc_info_t;
/* Typedef for storing CPUID Feature flags */
typedef union {
uint64_t flat;
uint32_t uint32_array[2];
struct {
uint32_t fpu:1; /* Bit 0 */
uint32_t vme:1;
uint32_t de:1;
uint32_t pse:1;
uint32_t tsc:1;
uint32_t msr:1;
uint32_t pae:1;
uint32_t mce:1;
uint32_t cx8:1;
uint32_t apic:1;
uint32_t reserved10:1;
uint32_t sep:1;
uint32_t mtrr:1;
uint32_t pge:1;
uint32_t mca:1;
uint32_t cmov:1;
uint32_t pat:1;
uint32_t pse36:1;
uint32_t psn:1;
uint32_t cflush:1;
uint32_t reserved20:1;
uint32_t ds:1;
uint32_t acpi:1;
uint32_t mmx:1;
uint32_t fxsr:1;
uint32_t sse:1;
uint32_t sse2:1;
uint32_t ss:1;
uint32_t htt:1;
uint32_t tm:1;
uint32_t reserved30:1;
uint32_t pbe:1; /* Bit 31 */
uint32_t sse3:1; /* Bit 32 */
uint32_t reserved3433:2;
uint32_t monitor:1;
uint32_t dscpl:1;
uint32_t reserved3937:3;
uint32_t tm2:1;
uint32_t reserved41:1;
uint32_t cnxtid:1;
uint32_t reserved4443:2;
uint32_t cmpxchg16b:1;
uint32_t reserved6346:18; /* Bit 63 */
} bits;
} cpuid_feature_flags_t;
/* Feature flags returned by extended CPUID node function 8000_0001. */
typedef union {
uint64_t flat;
uint32_t uint32_array[2];
struct {
uint32_t fpu:1; /* Bit 0 */
uint32_t vme:1;
uint32_t de:1;
uint32_t pse:1;
uint32_t tsc:1;
uint32_t msr:1;
uint32_t pae:1;
uint32_t mce:1;
uint32_t cx8:1;
uint32_t apic:1;
uint32_t reserved10:1;
uint32_t sep:1;
uint32_t mtrr:1;
uint32_t pge:1;
uint32_t mca:1;
uint32_t cmov:1;
uint32_t pat:1;
uint32_t pse36:1;
uint32_t reserved1918:2;
uint32_t nx:1;
uint32_t reserved21:1;
uint32_t mmxamd:1;
uint32_t mmx:1;
uint32_t fxsr:1;
uint32_t ffxsr:1;
uint32_t reserved26:1;
uint32_t rdtscp:1;
uint32_t reserved28:1;
uint32_t lm:1;
uint32_t threedeenowext:1;
uint32_t threedeenow:1; /* Bit 31 */
uint32_t lahf:1; /* Bit 32 */
uint32_t cmplegacy:1;
uint32_t reserved3534:2;
uint32_t cr8avail:1;
uint32_t reserved6337:27; /* Bit 63 */
} bits;
} cpuid_ext_feature_flags_t;
void cpuid_get(unsigned n, cpuid_t *data);
cpuid_vendor_string_t cpuid_get_vendor_string(void);
cpuid_version_t cpuid_get_version(void);
cpuid_feature_flags_t cpuid_get_feature_flags(void);
bool cpuid_get_ext_feature_flags(cpuid_ext_feature_flags_t *f);
bool cpuid_is_vendor_amd(void);
bool cpuid_is_vendor_intel(void);
bool cpuid_is_family_p6(void);
bool cpuid_is_family_p4(void);
bool cpuid_is_family_opteron(void);
void cpuid_init(void);
#endif
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