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linux/include/asm-i386/msr.h
Andi Kleen 3556ddfa92 [PATCH] x86-64: Disable local APIC timer use on AMD systems with C1E 
AMD dual core laptops with C1E do not run the APIC timer correctly
when they go idle. Previously the code assumed this only happened
on C2 or deeper.  But not all of these systems report support C2.

Use a AMD supplied snippet to detect C1E being enabled and then disable
local apic timer use.

This supercedes an earlier workaround using DMI detection of specific systems.

Thanks to Mark Langsdorf for the detection snippet.

Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-02 12:14:12 +02:00

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#ifndef __ASM_MSR_H
#define __ASM_MSR_H
#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) \
__asm__ __volatile__("rdmsr" \
: "=a" (val1), "=d" (val2) \
: "c" (msr))
#define wrmsr(msr,val1,val2) \
__asm__ __volatile__("wrmsr" \
: /* no outputs */ \
: "c" (msr), "a" (val1), "d" (val2))
#define rdmsrl(msr,val) do { \
unsigned long l__,h__; \
rdmsr (msr, l__, h__); \
val = l__; \
val |= ((u64)h__<<32); \
} 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,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 4\n\t" \
" .long 2b,3b\n\t" \
".previous" \
: "=a" (ret__) \
: "c" (msr), "0" (a), "d" (b), "i" (-EFAULT));\
ret__; })
/* rdmsr with exception handling */
#define rdmsr_safe(msr,a,b) ({ int ret__; \
asm volatile("2: rdmsr ; 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" \
: "=r" (ret__), "=a" (*(a)), "=d" (*(b)) \
: "c" (msr), "i" (-EFAULT));\
ret__; })
#define rdtsc(low,high) \
__asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))
#define rdtscl(low) \
__asm__ __volatile__("rdtsc" : "=a" (low) : : "edx")
#define rdtscll(val) \
__asm__ __volatile__("rdtsc" : "=A" (val))
#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
#define rdpmc(counter,low,high) \
__asm__ __volatile__("rdpmc" \
: "=a" (low), "=d" (high) \
: "c" (counter))
#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 */
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