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#ifndef _ASM_X86_MSR_H
#define _ASM_X86_MSR_H
#include "msr-index.h"
#ifndef __ASSEMBLY__
#define X86_IOC_RDMSR_REGS _IOWR('c', 0xA0, __u32[8])
#define X86_IOC_WRMSR_REGS _IOWR('c', 0xA1, __u32[8])
#ifdef _KERNEL
#include "asm.h"
#include <sys/ontrap.h>
#include <sys/errno.h>
#ifdef XXX
#include <asm/cpumask.h>
#endif /*XXX*/
typedef struct msr {
union {
struct {
uint32_t l;
uint32_t h;
};
uint64_t q;
}b;
} msr_t;
typedef struct msr_info {
uint32_t msr_no;
struct msr reg;
struct msr *msrs;
int err;
} msr_info_t;
typedef struct msr_regs_info {
uint32_t *regs;
int err;
} msr_regs_info_t;
extern unsigned long long native_read_tscp(unsigned int *aux);
/*
* both i386 and x86_64 returns 64-bit value in edx:eax, but gcc's "A"
* constraint has different meanings. For i386, "A" means exactly
* edx:eax, while for x86_64 it doesn't mean rdx:rax or edx:eax. Instead,
* it means rax *or* rdx.
*/
#ifdef CONFIG_X86_64
#define DECLARE_ARGS(val, low, high) unsigned low, high
#define EAX_EDX_VAL(val, low, high) ((low) | ((uint64_t)(high) << 32))
#define EAX_EDX_ARGS(val, low, high) "a" (low), "d" (high)
#define EAX_EDX_RET(val, low, high) "=a" (low), "=d" (high)
#else
#define DECLARE_ARGS(val, low, high) unsigned long long val
#define EAX_EDX_VAL(val, low, high) (val)
#define EAX_EDX_ARGS(val, low, high) "A" (val)
#define EAX_EDX_RET(val, low, high) "=A" (val)
#endif
extern unsigned long long native_read_msr(unsigned int msr);
extern uint64_t native_read_msr_safe(unsigned int msr, int *err);
extern int native_write_msr_safe(unsigned int msr,
unsigned low, unsigned high);
extern void native_write_msr(unsigned int msr,
unsigned low, unsigned high);
extern unsigned long long native_read_tsc(void);
extern unsigned long long __native_read_tsc(void);
extern unsigned long long native_read_pmc(int counter);
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
#ifdef XXX
#include <linux/errno.h>
#endif /*XXX*/
/*
* Access to machine-specific registers (available on 586 and better only)
* Note: the rd* operations modify the parameters directly (without using
* pointer indirection), this allows gcc to optimize better
*/
#define rdmsr(msr, val1, val2) \
do { \
uint64_t __val = native_read_msr((msr)); \
(val1) = (uint32_t)__val; \
(val2) = (uint32_t)(__val >> 32); \
} while (0)
extern void wrmsr(unsigned msr, unsigned low, unsigned high);
#define rdmsrl(msr, val) \
((val) = native_read_msr((msr)))
#define wrmsrl(msr, val) \
native_write_msr((msr), (uint32_t)((uint64_t)(val)), (uint32_t)((uint64_t)(val) >> 32))
/* see comment above for wrmsr() */
/* wrmsr with exception handling */
extern int wrmsr_safe(unsigned msr, unsigned low, unsigned high);
/* rdmsr with exception handling */
#define rdmsr_safe(msr, p1, p2) \
({ \
int __err; \
uint64_t __val = native_read_msr_safe((msr), &__err); \
(*p1) = (uint32_t)__val; \
(*p2) = (uint32_t)(__val >> 32); \
__err; \
})
extern int rdmsrl_safe(unsigned msr, unsigned long long *p);
extern int rdmsrl_amd_safe(unsigned msr, unsigned long long *p);
extern int wrmsrl_amd_safe(unsigned msr, unsigned long long val);
#define rdtscl(low) \
((low) = (uint32_t)__native_read_tsc())
#define rdtscll(val) \
((val) = __native_read_tsc())
#define rdpmc(counter, low, high) \
do { \
uint64_t _l = native_read_pmc((counter)); \
(low) = (uint32_t)_l; \
(high) = (uint32_t)(_l >> 32); \
} while (0)
#define rdtscp(low, high, aux) \
do { \
unsigned long long _val = native_read_tscp(&(aux)); \
(low) = (uint32_t)_val; \
(high) = (uint32_t)(_val >> 32); \
} while (0)
#define rdtscpll(val, aux) (val) = native_read_tscp(&(aux))
#endif /* !CONFIG_PARAVIRT */
#define checking_wrmsrl(msr, val) wrmsr_safe((msr), (uint32_t)(val), \
(uint32_t)((val) >> 32))
#define write_tsc(val1, val2) wrmsr(MSR_IA32_TSC, (val1), (val2))
#define write_rdtscp_aux(val) wrmsr(MSR_TSC_AUX, (val), 0)
struct msr *msrs_alloc(void);
void msrs_free(struct msr *msrs);
extern int rdmsr_on_cpu(unsigned int cpu,
uint32_t msr_no, uint32_t *l, uint32_t *h);
extern int wrmsr_on_cpu(unsigned int cpu,
uint32_t msr_no, uint32_t l, uint32_t h);
#endif /* _KERNEL */
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_MSR_H */
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