3556ddfa92
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>
152 lines
7.6 KiB
C
152 lines
7.6 KiB
C
/*
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* cpufeature.h
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*
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* Defines x86 CPU feature bits
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*/
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#ifndef __ASM_I386_CPUFEATURE_H
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#define __ASM_I386_CPUFEATURE_H
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#include <linux/bitops.h>
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#define NCAPINTS 7 /* N 32-bit words worth of info */
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/* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
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#define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
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#define X86_FEATURE_VME (0*32+ 1) /* Virtual Mode Extensions */
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#define X86_FEATURE_DE (0*32+ 2) /* Debugging Extensions */
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#define X86_FEATURE_PSE (0*32+ 3) /* Page Size Extensions */
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#define X86_FEATURE_TSC (0*32+ 4) /* Time Stamp Counter */
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#define X86_FEATURE_MSR (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
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#define X86_FEATURE_PAE (0*32+ 6) /* Physical Address Extensions */
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#define X86_FEATURE_MCE (0*32+ 7) /* Machine Check Architecture */
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#define X86_FEATURE_CX8 (0*32+ 8) /* CMPXCHG8 instruction */
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#define X86_FEATURE_APIC (0*32+ 9) /* Onboard APIC */
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#define X86_FEATURE_SEP (0*32+11) /* SYSENTER/SYSEXIT */
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#define X86_FEATURE_MTRR (0*32+12) /* Memory Type Range Registers */
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#define X86_FEATURE_PGE (0*32+13) /* Page Global Enable */
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#define X86_FEATURE_MCA (0*32+14) /* Machine Check Architecture */
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#define X86_FEATURE_CMOV (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
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#define X86_FEATURE_PAT (0*32+16) /* Page Attribute Table */
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#define X86_FEATURE_PSE36 (0*32+17) /* 36-bit PSEs */
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#define X86_FEATURE_PN (0*32+18) /* Processor serial number */
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#define X86_FEATURE_CLFLSH (0*32+19) /* Supports the CLFLUSH instruction */
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#define X86_FEATURE_DS (0*32+21) /* Debug Store */
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#define X86_FEATURE_ACPI (0*32+22) /* ACPI via MSR */
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#define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */
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#define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
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/* of FPU context), and CR4.OSFXSR available */
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#define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */
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#define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */
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#define X86_FEATURE_SELFSNOOP (0*32+27) /* CPU self snoop */
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#define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */
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#define X86_FEATURE_ACC (0*32+29) /* Automatic clock control */
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#define X86_FEATURE_IA64 (0*32+30) /* IA-64 processor */
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/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
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/* Don't duplicate feature flags which are redundant with Intel! */
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#define X86_FEATURE_SYSCALL (1*32+11) /* SYSCALL/SYSRET */
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#define X86_FEATURE_MP (1*32+19) /* MP Capable. */
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#define X86_FEATURE_NX (1*32+20) /* Execute Disable */
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#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
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#define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */
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#define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */
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#define X86_FEATURE_3DNOW (1*32+31) /* 3DNow! */
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/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
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#define X86_FEATURE_RECOVERY (2*32+ 0) /* CPU in recovery mode */
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#define X86_FEATURE_LONGRUN (2*32+ 1) /* Longrun power control */
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#define X86_FEATURE_LRTI (2*32+ 3) /* LongRun table interface */
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/* Other features, Linux-defined mapping, word 3 */
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/* This range is used for feature bits which conflict or are synthesized */
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#define X86_FEATURE_CXMMX (3*32+ 0) /* Cyrix MMX extensions */
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#define X86_FEATURE_K6_MTRR (3*32+ 1) /* AMD K6 nonstandard MTRRs */
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#define X86_FEATURE_CYRIX_ARR (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
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#define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
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/* cpu types for specific tunings: */
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#define X86_FEATURE_K8 (3*32+ 4) /* Opteron, Athlon64 */
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#define X86_FEATURE_K7 (3*32+ 5) /* Athlon */
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#define X86_FEATURE_P3 (3*32+ 6) /* P3 */
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#define X86_FEATURE_P4 (3*32+ 7) /* P4 */
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#define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */
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#define X86_FEATURE_UP (3*32+ 9) /* smp kernel running on up */
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#define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */
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#define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */
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#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */
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#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
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#define X86_FEATURE_LAPIC_TIMER_BROKEN (3*32+ 14) /* lapic timer broken in C1 */
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/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
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#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
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#define X86_FEATURE_MWAIT (4*32+ 3) /* Monitor/Mwait support */
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#define X86_FEATURE_DSCPL (4*32+ 4) /* CPL Qualified Debug Store */
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#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
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#define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */
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#define X86_FEATURE_CID (4*32+10) /* Context ID */
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#define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */
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#define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */
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/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
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#define X86_FEATURE_XSTORE (5*32+ 2) /* on-CPU RNG present (xstore insn) */
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#define X86_FEATURE_XSTORE_EN (5*32+ 3) /* on-CPU RNG enabled */
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#define X86_FEATURE_XCRYPT (5*32+ 6) /* on-CPU crypto (xcrypt insn) */
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#define X86_FEATURE_XCRYPT_EN (5*32+ 7) /* on-CPU crypto enabled */
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#define X86_FEATURE_ACE2 (5*32+ 8) /* Advanced Cryptography Engine v2 */
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#define X86_FEATURE_ACE2_EN (5*32+ 9) /* ACE v2 enabled */
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#define X86_FEATURE_PHE (5*32+ 10) /* PadLock Hash Engine */
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#define X86_FEATURE_PHE_EN (5*32+ 11) /* PHE enabled */
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#define X86_FEATURE_PMM (5*32+ 12) /* PadLock Montgomery Multiplier */
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#define X86_FEATURE_PMM_EN (5*32+ 13) /* PMM enabled */
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/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
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#define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
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#define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
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#define cpu_has(c, bit) test_bit(bit, (c)->x86_capability)
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#define boot_cpu_has(bit) test_bit(bit, boot_cpu_data.x86_capability)
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#define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU)
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#define cpu_has_vme boot_cpu_has(X86_FEATURE_VME)
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#define cpu_has_de boot_cpu_has(X86_FEATURE_DE)
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#define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE)
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#define cpu_has_tsc boot_cpu_has(X86_FEATURE_TSC)
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#define cpu_has_pae boot_cpu_has(X86_FEATURE_PAE)
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#define cpu_has_pge boot_cpu_has(X86_FEATURE_PGE)
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#define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC)
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#define cpu_has_sep boot_cpu_has(X86_FEATURE_SEP)
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#define cpu_has_mtrr boot_cpu_has(X86_FEATURE_MTRR)
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#define cpu_has_mmx boot_cpu_has(X86_FEATURE_MMX)
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#define cpu_has_fxsr boot_cpu_has(X86_FEATURE_FXSR)
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#define cpu_has_xmm boot_cpu_has(X86_FEATURE_XMM)
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#define cpu_has_xmm2 boot_cpu_has(X86_FEATURE_XMM2)
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#define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3)
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#define cpu_has_ht boot_cpu_has(X86_FEATURE_HT)
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#define cpu_has_mp boot_cpu_has(X86_FEATURE_MP)
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#define cpu_has_nx boot_cpu_has(X86_FEATURE_NX)
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#define cpu_has_k6_mtrr boot_cpu_has(X86_FEATURE_K6_MTRR)
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#define cpu_has_cyrix_arr boot_cpu_has(X86_FEATURE_CYRIX_ARR)
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#define cpu_has_centaur_mcr boot_cpu_has(X86_FEATURE_CENTAUR_MCR)
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#define cpu_has_xstore boot_cpu_has(X86_FEATURE_XSTORE)
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#define cpu_has_xstore_enabled boot_cpu_has(X86_FEATURE_XSTORE_EN)
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#define cpu_has_xcrypt boot_cpu_has(X86_FEATURE_XCRYPT)
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#define cpu_has_xcrypt_enabled boot_cpu_has(X86_FEATURE_XCRYPT_EN)
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#define cpu_has_ace2 boot_cpu_has(X86_FEATURE_ACE2)
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#define cpu_has_ace2_enabled boot_cpu_has(X86_FEATURE_ACE2_EN)
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#define cpu_has_phe boot_cpu_has(X86_FEATURE_PHE)
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#define cpu_has_phe_enabled boot_cpu_has(X86_FEATURE_PHE_EN)
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#define cpu_has_pmm boot_cpu_has(X86_FEATURE_PMM)
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#define cpu_has_pmm_enabled boot_cpu_has(X86_FEATURE_PMM_EN)
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#define cpu_has_ds boot_cpu_has(X86_FEATURE_DS)
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#define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS)
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#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
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#define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS)
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#endif /* __ASM_I386_CPUFEATURE_H */
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/*
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* Local Variables:
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* mode:c
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* comment-column:42
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* End:
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*/
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