linux/include/asm-x86_64/msr.h

#ifndef X86_64_MSR_H
#define X86_64_MSR_H 1

#ifndef __ASSEMBLY__
/*
 * 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) \
       __asm__ __volatile__("rdmsr" \
			    : "=a" (val1), "=d" (val2) \
			    : "c" (msr))


#define rdmsrl(msr,val) do { unsigned long a__,b__; \
       __asm__ __volatile__("rdmsr" \
			    : "=a" (a__), "=d" (b__) \
			    : "c" (msr)); \
       val = a__ | (b__<<32); \
} while(0)

#define wrmsr(msr,val1,val2) \
     __asm__ __volatile__("wrmsr" \
			  : /* no outputs */ \
			  : "c" (msr), "a" (val1), "d" (val2))

#define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32) 

/* wrmsr with exception handling */
#define wrmsr_safe(msr,a,b) ({ int ret__;			\
	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 8\n\t"				\
		     "   .quad 	2b,3b\n\t"			\
		     ".previous"				\
		     : "=a" (ret__)				\
		     : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT)); \
	ret__; })

#define checking_wrmsrl(msr,val) wrmsr_safe(msr,(u32)(val),(u32)((val)>>32))

#define rdmsr_safe(msr,a,b) \
	({ int ret__;						\
	  asm volatile ("1:       rdmsr\n"			\
                      "2:\n"					\
                      ".section .fixup,\"ax\"\n"		\
                      "3:       movl %4,%0\n"			\
                      " jmp 2b\n"				\
                      ".previous\n"				\
                      ".section __ex_table,\"a\"\n"		\
                      " .align 8\n"				\
                      " .quad 1b,3b\n"				\
                      ".previous":"=&bDS" (ret__), "=a"(*(a)), "=d"(*(b))\
                      :"c"(msr), "i"(-EIO), "0"(0));		\
	  ret__; })		

#define rdtsc(low,high) \
     __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))

#define rdtscl(low) \
     __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")

#define rdtscll(val) do { \
     unsigned int __a,__d; \
     asm volatile("rdtsc" : "=a" (__a), "=d" (__d)); \
     (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \
} while(0)

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

#define rdpmc(counter,low,high) \
     __asm__ __volatile__("rdpmc" \
			  : "=a" (low), "=d" (high) \
			  : "c" (counter))

static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx,
			 unsigned int *ecx, unsigned int *edx)
{
	__asm__("cpuid"
		: "=a" (*eax),
		  "=b" (*ebx),
		  "=c" (*ecx),
		  "=d" (*edx)
		: "0" (op));
}

/* Some CPUID calls want 'count' to be placed in ecx */
static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
	       	int *edx)
{
	__asm__("cpuid"
		: "=a" (*eax),
		  "=b" (*ebx),
		  "=c" (*ecx),
		  "=d" (*edx)
		: "0" (op), "c" (count));
}

/*
 * CPUID functions returning a single datum
 */
static inline unsigned int cpuid_eax(unsigned int op)
{
	unsigned int eax;

	__asm__("cpuid"
		: "=a" (eax)
		: "0" (op)
		: "bx", "cx", "dx");
	return eax;
}
static inline unsigned int cpuid_ebx(unsigned int op)
{
	unsigned int eax, ebx;

	__asm__("cpuid"
		: "=a" (eax), "=b" (ebx)
		: "0" (op)
		: "cx", "dx" );
	return ebx;
}
static inline unsigned int cpuid_ecx(unsigned int op)
{
	unsigned int eax, ecx;

	__asm__("cpuid"
		: "=a" (eax), "=c" (ecx)
		: "0" (op)
		: "bx", "dx" );
	return ecx;
}
static inline unsigned int cpuid_edx(unsigned int op)
{
	unsigned int eax, edx;

	__asm__("cpuid"
		: "=a" (eax), "=d" (edx)
		: "0" (op)
		: "bx", "cx");
	return edx;
}

#define MSR_IA32_UCODE_WRITE		0x79
#define MSR_IA32_UCODE_REV		0x8b


#endif

/* AMD/K8 specific MSRs */ 
#define MSR_EFER 0xc0000080		/* extended feature register */
#define MSR_STAR 0xc0000081		/* legacy mode SYSCALL target */
#define MSR_LSTAR 0xc0000082 		/* long mode SYSCALL target */
#define MSR_CSTAR 0xc0000083		/* compatibility mode SYSCALL target */
#define MSR_SYSCALL_MASK 0xc0000084	/* EFLAGS mask for syscall */
#define MSR_FS_BASE 0xc0000100		/* 64bit GS base */
#define MSR_GS_BASE 0xc0000101		/* 64bit FS base */
#define MSR_KERNEL_GS_BASE  0xc0000102	/* SwapGS GS shadow (or USER_GS from kernel) */ 
/* EFER bits: */ 
#define _EFER_SCE 0  /* SYSCALL/SYSRET */
#define _EFER_LME 8  /* Long mode enable */
#define _EFER_LMA 10 /* Long mode active (read-only) */
#define _EFER_NX 11  /* No execute enable */

#define EFER_SCE (1<<_EFER_SCE)
#define EFER_LME (1<<_EFER_LME)
#define EFER_LMA (1<<_EFER_LMA)
#define EFER_NX (1<<_EFER_NX)

/* Intel MSRs. Some also available on other CPUs */
#define MSR_IA32_TSC		0x10
#define MSR_IA32_PLATFORM_ID	0x17

#define MSR_IA32_PERFCTR0      0xc1
#define MSR_IA32_PERFCTR1      0xc2

#define MSR_MTRRcap		0x0fe
#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

#define MSR_IA32_EVNTSEL0      0x186
#define MSR_IA32_EVNTSEL1      0x187

#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_MTRRfix64K_00000	0x250
#define MSR_MTRRfix16K_80000	0x258
#define MSR_MTRRfix16K_A0000	0x259
#define MSR_MTRRfix4K_C0000	0x268
#define MSR_MTRRfix4K_C8000	0x269
#define MSR_MTRRfix4K_D0000	0x26a
#define MSR_MTRRfix4K_D8000	0x26b
#define MSR_MTRRfix4K_E0000	0x26c
#define MSR_MTRRfix4K_E8000	0x26d
#define MSR_MTRRfix4K_F0000	0x26e
#define MSR_MTRRfix4K_F8000	0x26f
#define MSR_MTRRdefType		0x2ff

#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_P6_PERFCTR0			0xc1
#define MSR_P6_PERFCTR1			0xc2
#define MSR_P6_EVNTSEL0			0x186
#define MSR_P6_EVNTSEL1			0x187

/* K7/K8 MSRs. Not complete. See the architecture manual for a more complete list. */
#define MSR_K7_EVNTSEL0            0xC0010000
#define MSR_K7_PERFCTR0            0xC0010004
#define MSR_K7_EVNTSEL1            0xC0010001
#define MSR_K7_PERFCTR1            0xC0010005
#define MSR_K7_EVNTSEL2            0xC0010002
#define MSR_K7_PERFCTR2            0xC0010006
#define MSR_K7_EVNTSEL3            0xC0010003
#define MSR_K7_PERFCTR3            0xC0010007
#define MSR_K8_TOP_MEM1		   0xC001001A
#define MSR_K8_TOP_MEM2		   0xC001001D
#define MSR_K8_SYSCFG		   0xC0010010
#define MSR_K8_HWCR		   0xC0010015

/* K6 MSRs */
#define MSR_K6_EFER			0xC0000080
#define MSR_K6_STAR			0xC0000081
#define MSR_K6_WHCR			0xC0000082
#define MSR_K6_UWCCR			0xC0000085
#define MSR_K6_PSOR			0xC0000087
#define MSR_K6_PFIR			0xC0000088

/* 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

/* 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)

/* 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_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

/* 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

#endif