include/asm-i386/msr.h

#ifndef __ASM_MSR_H
#define __ASM_MSR_H

#include <asm/errno.h>

static inline unsigned long long native_read_msr(unsigned int msr)
{
	unsigned long long val;

	asm volatile("rdmsr" : "=A" (val) : "c" (msr));
	return val;
}

static inline unsigned long long native_read_msr_safe(unsigned int msr,
						      int *err)
{
	unsigned long long val;

	asm volatile("2: rdmsr ; xorl %0,%0\n"
		     "1:\n\t"
		     ".section .fixup,\"ax\"\n\t"
		     "3:  movl %3,%0 ; jmp 1b\n\t"
		     ".previous\n\t"
 		     ".section __ex_table,\"a\"\n"
		     "   .align 4\n\t"
		     "   .long 	2b,3b\n\t"
		     ".previous"
		     : "=r" (*err), "=A" (val)
		     : "c" (msr), "i" (-EFAULT));

	return val;
}

static inline void native_write_msr(unsigned int msr, unsigned long long val)
{
	asm volatile("wrmsr" : : "c" (msr), "A"(val));
}

static inline int native_write_msr_safe(unsigned int msr,
					unsigned long long val)
{
	int err;
	asm volatile("2: wrmsr ; xorl %0,%0\n"
		     "1:\n\t"
		     ".section .fixup,\"ax\"\n\t"
		     "3:  movl %4,%0 ; jmp 1b\n\t"
		     ".previous\n\t"
 		     ".section __ex_table,\"a\"\n"
		     "   .align 4\n\t"
		     "   .long 	2b,3b\n\t"
		     ".previous"
		     : "=a" (err)
		     : "c" (msr), "0" ((u32)val), "d" ((u32)(val>>32)),
		       "i" (-EFAULT));
	return err;
}

static inline unsigned long long native_read_tsc(void)
{
	unsigned long long val;
	asm volatile("rdtsc" : "=A" (val));
	return val;
}

static inline unsigned long long native_read_pmc(void)
{
	unsigned long long val;
	asm volatile("rdpmc" : "=A" (val));
	return val;
}

#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else

/*
 * 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 {								\
		unsigned long long __val = native_read_msr(msr);	\
		val1 = __val;						\
		val2 = __val >> 32;					\
	} while(0)

#define wrmsr(msr,val1,val2)						\
	native_write_msr(msr, ((unsigned long long)val2 << 32) | val1)

#define rdmsrl(msr,val)					\
	do {						\
		(val) = native_read_msr(msr);		\
	} while(0)

static inline void wrmsrl (unsigned long msr, unsigned long long val)
{
	unsigned long lo, hi;
	lo = (unsigned long) val;
	hi = val >> 32;
	wrmsr (msr, lo, hi);
}

/* wrmsr with exception handling */
#define wrmsr_safe(msr,val1,val2)						\
	(native_write_msr_safe(msr, ((unsigned long long)val2 << 32) | val1))

/* rdmsr with exception handling */
#define rdmsr_safe(msr,p1,p2)						\
	({								\
		int __err;						\
		unsigned long long __val = native_read_msr_safe(msr, &__err);\
		(*p1) = __val;						\
		(*p2) = __val >> 32;					\
		__err;							\
	})

#define rdtsc(low,high)						\
	do {							\
		u64 _l = native_read_tsc();			\
		(low) = (u32)_l;				\
		(high) = _l >> 32;				\
	} while(0)

#define rdtscl(low)						\
	do {							\
		(low) = native_read_tsc();			\
	} while(0)

#define rdtscll(val) ((val) = native_read_tsc())

#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)

#define rdpmc(counter,low,high)					\
	do {							\
		u64 _l = native_read_pmc();			\
		low = (u32)_l;					\
		high = _l >> 32;				\
	} while(0)
#endif	/* !CONFIG_PARAVIRT */

#ifdef CONFIG_SMP
void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
#else  /*  CONFIG_SMP  */
static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
{
	rdmsr(msr_no, *l, *h);
}
static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
{
	wrmsr(msr_no, l, h);
}
#endif  /*  CONFIG_SMP  */

/* symbolic names for some interesting MSRs */
/* Intel defined MSRs. */
#define MSR_IA32_P5_MC_ADDR		0
#define MSR_IA32_P5_MC_TYPE		1
#define MSR_IA32_PLATFORM_ID		0x17
#define MSR_IA32_EBL_CR_POWERON		0x2a

#define MSR_IA32_APICBASE		0x1b
#define MSR_IA32_APICBASE_BSP		(1<<8)
#define MSR_IA32_APICBASE_ENABLE	(1<<11)
#define MSR_IA32_APICBASE_BASE		(0xfffff<<12)

#define MSR_IA32_UCODE_WRITE		0x79
#define MSR_IA32_UCODE_REV		0x8b

#define MSR_P6_PERFCTR0		0xc1
#define MSR_P6_PERFCTR1		0xc2
#define MSR_FSB_FREQ		0xcd


#define MSR_IA32_BBL_CR_CTL		0x119

#define MSR_IA32_SYSENTER_CS		0x174
#define MSR_IA32_SYSENTER_ESP		0x175
#define MSR_IA32_SYSENTER_EIP		0x176

#define MSR_IA32_MCG_CAP		0x179
#define MSR_IA32_MCG_STATUS		0x17a
#define MSR_IA32_MCG_CTL		0x17b

/* P4/Xeon+ specific */
#define MSR_IA32_MCG_EAX		0x180
#define MSR_IA32_MCG_EBX		0x181
#define MSR_IA32_MCG_ECX		0x182
#define MSR_IA32_MCG_EDX		0x183
#define MSR_IA32_MCG_ESI		0x184
#define MSR_IA32_MCG_EDI		0x185
#define MSR_IA32_MCG_EBP		0x186
#define MSR_IA32_MCG_ESP		0x187
#define MSR_IA32_MCG_EFLAGS		0x188
#define MSR_IA32_MCG_EIP		0x189
#define MSR_IA32_MCG_RESERVED		0x18A

#define MSR_P6_EVNTSEL0			0x186
#define MSR_P6_EVNTSEL1			0x187

#define MSR_IA32_PERF_STATUS		0x198
#define MSR_IA32_PERF_CTL		0x199

#define MSR_IA32_MPERF			0xE7
#define MSR_IA32_APERF			0xE8

#define MSR_IA32_THERM_CONTROL		0x19a
#define MSR_IA32_THERM_INTERRUPT	0x19b
#define MSR_IA32_THERM_STATUS		0x19c
#define MSR_IA32_MISC_ENABLE		0x1a0

#define MSR_IA32_DEBUGCTLMSR		0x1d9
#define MSR_IA32_LASTBRANCHFROMIP	0x1db
#define MSR_IA32_LASTBRANCHTOIP		0x1dc
#define MSR_IA32_LASTINTFROMIP		0x1dd
#define MSR_IA32_LASTINTTOIP		0x1de

#define MSR_IA32_MC0_CTL		0x400
#define MSR_IA32_MC0_STATUS		0x401
#define MSR_IA32_MC0_ADDR		0x402
#define MSR_IA32_MC0_MISC		0x403

#define MSR_IA32_PEBS_ENABLE		0x3f1
#define MSR_IA32_DS_AREA		0x600
#define MSR_IA32_PERF_CAPABILITIES	0x345

/* Pentium IV performance counter MSRs */
#define MSR_P4_BPU_PERFCTR0 		0x300
#define MSR_P4_BPU_PERFCTR1 		0x301
#define MSR_P4_BPU_PERFCTR2 		0x302
#define MSR_P4_BPU_PERFCTR3 		0x303
#define MSR_P4_MS_PERFCTR0 		0x304
#define MSR_P4_MS_PERFCTR1 		0x305
#define MSR_P4_MS_PERFCTR2 		0x306
#define MSR_P4_MS_PERFCTR3 		0x307
#define MSR_P4_FLAME_PERFCTR0 		0x308
#define MSR_P4_FLAME_PERFCTR1 		0x309
#define MSR_P4_FLAME_PERFCTR2 		0x30a
#define MSR_P4_FLAME_PERFCTR3 		0x30b
#define MSR_P4_IQ_PERFCTR0 		0x30c
#define MSR_P4_IQ_PERFCTR1 		0x30d
#define MSR_P4_IQ_PERFCTR2 		0x30e
#define MSR_P4_IQ_PERFCTR3 		0x30f
#define MSR_P4_IQ_PERFCTR4 		0x310
#define MSR_P4_IQ_PERFCTR5 		0x311
#define MSR_P4_BPU_CCCR0 		0x360
#define MSR_P4_BPU_CCCR1 		0x361
#define MSR_P4_BPU_CCCR2 		0x362
#define MSR_P4_BPU_CCCR3 		0x363
#define MSR_P4_MS_CCCR0 		0x364
#define MSR_P4_MS_CCCR1 		0x365
#define MSR_P4_MS_CCCR2 		0x366
#define MSR_P4_MS_CCCR3 		0x367
#define MSR_P4_FLAME_CCCR0 		0x368
#define MSR_P4_FLAME_CCCR1 		0x369
#define MSR_P4_FLAME_CCCR2 		0x36a
#define MSR_P4_FLAME_CCCR3 		0x36b
#define MSR_P4_IQ_CCCR0 		0x36c
#define MSR_P4_IQ_CCCR1 		0x36d
#define MSR_P4_IQ_CCCR2 		0x36e
#define MSR_P4_IQ_CCCR3 		0x36f
#define MSR_P4_IQ_CCCR4 		0x370
#define MSR_P4_IQ_CCCR5 		0x371
#define MSR_P4_ALF_ESCR0 		0x3ca
#define MSR_P4_ALF_ESCR1 		0x3cb
#define MSR_P4_BPU_ESCR0 		0x3b2
#define MSR_P4_BPU_ESCR1 		0x3b3
#define MSR_P4_BSU_ESCR0 		0x3a0
#define MSR_P4_BSU_ESCR1 		0x3a1
#define MSR_P4_CRU_ESCR0 		0x3b8
#define MSR_P4_CRU_ESCR1 		0x3b9
#define MSR_P4_CRU_ESCR2 		0x3cc
#define MSR_P4_CRU_ESCR3 		0x3cd
#define MSR_P4_CRU_ESCR4 		0x3e0
#define MSR_P4_CRU_ESCR5 		0x3e1
#define MSR_P4_DAC_ESCR0 		0x3a8
#define MSR_P4_DAC_ESCR1 		0x3a9
#define MSR_P4_FIRM_ESCR0 		0x3a4
#define MSR_P4_FIRM_ESCR1 		0x3a5
#define MSR_P4_FLAME_ESCR0 		0x3a6
#define MSR_P4_FLAME_ESCR1 		0x3a7
#define MSR_P4_FSB_ESCR0 		0x3a2
#define MSR_P4_FSB_ESCR1 		0x3a3
#define MSR_P4_IQ_ESCR0 		0x3ba
#define MSR_P4_IQ_ESCR1 		0x3bb
#define MSR_P4_IS_ESCR0 		0x3b4
#define MSR_P4_IS_ESCR1 		0x3b5
#define MSR_P4_ITLB_ESCR0 		0x3b6
#define MSR_P4_ITLB_ESCR1 		0x3b7
#define MSR_P4_IX_ESCR0 		0x3c8
#define MSR_P4_IX_ESCR1 		0x3c9
#define MSR_P4_MOB_ESCR0 		0x3aa
#define MSR_P4_MOB_ESCR1 		0x3ab
#define MSR_P4_MS_ESCR0 		0x3c0
#define MSR_P4_MS_ESCR1 		0x3c1
#define MSR_P4_PMH_ESCR0 		0x3ac
#define MSR_P4_PMH_ESCR1 		0x3ad
#define MSR_P4_RAT_ESCR0 		0x3bc
#define MSR_P4_RAT_ESCR1 		0x3bd
#define MSR_P4_SAAT_ESCR0 		0x3ae
#define MSR_P4_SAAT_ESCR1 		0x3af
#define MSR_P4_SSU_ESCR0 		0x3be
#define MSR_P4_SSU_ESCR1 		0x3bf    /* guess: not defined in manual */
#define MSR_P4_TBPU_ESCR0 		0x3c2
#define MSR_P4_TBPU_ESCR1 		0x3c3
#define MSR_P4_TC_ESCR0 		0x3c4
#define MSR_P4_TC_ESCR1 		0x3c5
#define MSR_P4_U2L_ESCR0 		0x3b0
#define MSR_P4_U2L_ESCR1 		0x3b1

/* AMD Defined MSRs */
#define MSR_K6_EFER			0xC0000080
#define MSR_K6_STAR			0xC0000081
#define MSR_K6_WHCR			0xC0000082
#define MSR_K6_UWCCR			0xC0000085
#define MSR_K6_EPMR			0xC0000086
#define MSR_K6_PSOR			0xC0000087
#define MSR_K6_PFIR			0xC0000088

#define MSR_K7_EVNTSEL0			0xC0010000
#define MSR_K7_EVNTSEL1			0xC0010001
#define MSR_K7_EVNTSEL2			0xC0010002
#define MSR_K7_EVNTSEL3			0xC0010003
#define MSR_K7_PERFCTR0			0xC0010004
#define MSR_K7_PERFCTR1			0xC0010005
#define MSR_K7_PERFCTR2			0xC0010006
#define MSR_K7_PERFCTR3			0xC0010007
#define MSR_K7_HWCR			0xC0010015
#define MSR_K7_CLK_CTL			0xC001001b
#define MSR_K7_FID_VID_CTL		0xC0010041
#define MSR_K7_FID_VID_STATUS		0xC0010042

#define MSR_K8_ENABLE_C1E		0xC0010055

/* extended feature register */
#define MSR_EFER 			0xc0000080

/* EFER bits: */

/* Execute Disable enable */
#define _EFER_NX			11
#define EFER_NX				(1<<_EFER_NX)

/* Centaur-Hauls/IDT defined MSRs. */
#define MSR_IDT_FCR1			0x107
#define MSR_IDT_FCR2			0x108
#define MSR_IDT_FCR3			0x109
#define MSR_IDT_FCR4			0x10a

#define MSR_IDT_MCR0			0x110
#define MSR_IDT_MCR1			0x111
#define MSR_IDT_MCR2			0x112
#define MSR_IDT_MCR3			0x113
#define MSR_IDT_MCR4			0x114
#define MSR_IDT_MCR5			0x115
#define MSR_IDT_MCR6			0x116
#define MSR_IDT_MCR7			0x117
#define MSR_IDT_MCR_CTRL		0x120

/* VIA Cyrix defined MSRs*/
#define MSR_VIA_FCR			0x1107
#define MSR_VIA_LONGHAUL		0x110a
#define MSR_VIA_RNG			0x110b
#define MSR_VIA_BCR2			0x1147

/* Transmeta defined MSRs */
#define MSR_TMTA_LONGRUN_CTRL		0x80868010
#define MSR_TMTA_LONGRUN_FLAGS		0x80868011
#define MSR_TMTA_LRTI_READOUT		0x80868018
#define MSR_TMTA_LRTI_VOLT_MHZ		0x8086801a

/* Intel Core-based CPU performance counters */
#define MSR_CORE_PERF_FIXED_CTR0	0x309
#define MSR_CORE_PERF_FIXED_CTR1	0x30a
#define MSR_CORE_PERF_FIXED_CTR2	0x30b
#define MSR_CORE_PERF_FIXED_CTR_CTRL	0x38d
#define MSR_CORE_PERF_GLOBAL_STATUS	0x38e
#define MSR_CORE_PERF_GLOBAL_CTRL	0x38f
#define MSR_CORE_PERF_GLOBAL_OVF_CTRL	0x390

/* Geode defined MSRs */
#define MSR_GEODE_BUSCONT_CONF0         0x1900

#endif /* __ASM_MSR_H */