cpufeature.h

/*
 * cpufeature.h
 *
 * Defines x86 CPU feature bits
 */

#ifndef __ASM_X8664_CPUFEATURE_H
#define __ASM_X8664_CPUFEATURE_H

#define NCAPINTS	7	/* N 32-bit words worth of info */

/* Intel-defined CPU features, CPUID level 0x00000001, word 0 */
#define X86_FEATURE_FPU		(0*32+ 0) /* Onboard FPU */
#define X86_FEATURE_VME		(0*32+ 1) /* Virtual Mode Extensions */
#define X86_FEATURE_DE		(0*32+ 2) /* Debugging Extensions */
#define X86_FEATURE_PSE 	(0*32+ 3) /* Page Size Extensions */
#define X86_FEATURE_TSC		(0*32+ 4) /* Time Stamp Counter */
#define X86_FEATURE_MSR		(0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
#define X86_FEATURE_PAE		(0*32+ 6) /* Physical Address Extensions */
#define X86_FEATURE_MCE		(0*32+ 7) /* Machine Check Architecture */
#define X86_FEATURE_CX8		(0*32+ 8) /* CMPXCHG8 instruction */
#define X86_FEATURE_APIC	(0*32+ 9) /* Onboard APIC */
#define X86_FEATURE_SEP		(0*32+11) /* SYSENTER/SYSEXIT */
#define X86_FEATURE_MTRR	(0*32+12) /* Memory Type Range Registers */
#define X86_FEATURE_PGE		(0*32+13) /* Page Global Enable */
#define X86_FEATURE_MCA		(0*32+14) /* Machine Check Architecture */
#define X86_FEATURE_CMOV	(0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
#define X86_FEATURE_PAT		(0*32+16) /* Page Attribute Table */
#define X86_FEATURE_PSE36	(0*32+17) /* 36-bit PSEs */
#define X86_FEATURE_PN		(0*32+18) /* Processor serial number */
#define X86_FEATURE_CLFLSH	(0*32+19) /* Supports the CLFLUSH instruction */
#define X86_FEATURE_DTES	(0*32+21) /* Debug Trace Store */
#define X86_FEATURE_ACPI	(0*32+22) /* ACPI via MSR */
#define X86_FEATURE_MMX		(0*32+23) /* Multimedia Extensions */
#define X86_FEATURE_FXSR	(0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
				          /* of FPU context), and CR4.OSFXSR available */
#define X86_FEATURE_XMM		(0*32+25) /* Streaming SIMD Extensions */
#define X86_FEATURE_XMM2	(0*32+26) /* Streaming SIMD Extensions-2 */
#define X86_FEATURE_SELFSNOOP	(0*32+27) /* CPU self snoop */
#define X86_FEATURE_HT		(0*32+28) /* Hyper-Threading */
#define X86_FEATURE_ACC		(0*32+29) /* Automatic clock control */
#define X86_FEATURE_IA64	(0*32+30) /* IA-64 processor */

/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
/* Don't duplicate feature flags which are redundant with Intel! */
#define X86_FEATURE_SYSCALL	(1*32+11) /* SYSCALL/SYSRET */
#define X86_FEATURE_MMXEXT	(1*32+22) /* AMD MMX extensions */
#define X86_FEATURE_FXSR_OPT	(1*32+25) /* FXSR optimizations */
#define X86_FEATURE_LM		(1*32+29) /* Long Mode (x86-64) */
#define X86_FEATURE_3DNOWEXT	(1*32+30) /* AMD 3DNow! extensions */
#define X86_FEATURE_3DNOW	(1*32+31) /* 3DNow! */

/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
#define X86_FEATURE_RECOVERY	(2*32+ 0) /* CPU in recovery mode */
#define X86_FEATURE_LONGRUN	(2*32+ 1) /* Longrun power control */
#define X86_FEATURE_LRTI	(2*32+ 3) /* LongRun table interface */

/* Other features, Linux-defined mapping, word 3 */
/* This range is used for feature bits which conflict or are synthesized */
#define X86_FEATURE_CXMMX	(3*32+ 0) /* Cyrix MMX extensions */
#define X86_FEATURE_K6_MTRR	(3*32+ 1) /* AMD K6 nonstandard MTRRs */
#define X86_FEATURE_CYRIX_ARR	(3*32+ 2) /* Cyrix ARRs (= MTRRs) */
#define X86_FEATURE_CENTAUR_MCR	(3*32+ 3) /* Centaur MCRs (= MTRRs) */
/* 4 free */
#define X86_FEATURE_CONSTANT_TSC (3*32+5) /* TSC runs at constant rate */
#define X86_FEATURE_SYNC_RDTSC  (3*32+6)  /* RDTSC syncs CPU core */

/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3	(4*32+ 0) /* Streaming SIMD Extensions-3 */
#define X86_FEATURE_MWAIT	(4*32+ 3) /* Monitor/Mwait support */
#define X86_FEATURE_DSCPL	(4*32+ 4) /* CPL Qualified Debug Store */
#define X86_FEATURE_EST		(4*32+ 7) /* Enhanced SpeedStep */
#define X86_FEATURE_TM2		(4*32+ 8) /* Thermal Monitor 2 */
#define X86_FEATURE_CID		(4*32+10) /* Context ID */
#define X86_FEATURE_CX16	(4*32+13) /* CMPXCHG16B */
#define X86_FEATURE_XTPR	(4*32+14) /* Send Task Priority Messages */

/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
#define X86_FEATURE_XSTORE	(5*32+ 2) /* on-CPU RNG present (xstore insn) */
#define X86_FEATURE_XSTORE_EN	(5*32+ 3) /* on-CPU RNG enabled */
#define X86_FEATURE_XCRYPT	(5*32+ 6) /* on-CPU crypto (xcrypt insn) */
#define X86_FEATURE_XCRYPT_EN	(5*32+ 7) /* on-CPU crypto enabled */

/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
#define X86_FEATURE_LAHF_LM	(6*32+ 0) /* LAHF/SAHF in long mode */
#define X86_FEATURE_CMP_LEGACY	(6*32+ 1) /* If yes HyperThreading not valid */

#define cpu_has(c, bit)                test_bit(bit, (c)->x86_capability)
#define boot_cpu_has(bit)      test_bit(bit, boot_cpu_data.x86_capability)

#define cpu_has_fpu            1
#define cpu_has_vme            0
#define cpu_has_de             1
#define cpu_has_pse            1
#define cpu_has_tsc            1
#define cpu_has_pae            ___BUG___
#define cpu_has_pge            1
#define cpu_has_apic           boot_cpu_has(X86_FEATURE_APIC)
#define cpu_has_mtrr           1
#define cpu_has_mmx            1
#define cpu_has_fxsr           1
#define cpu_has_xmm            1
#define cpu_has_xmm2           1
#define cpu_has_xmm3           boot_cpu_has(X86_FEATURE_XMM3)
#define cpu_has_ht             boot_cpu_has(X86_FEATURE_HT)
#define cpu_has_mp             1 /* XXX */
#define cpu_has_k6_mtrr        0
#define cpu_has_cyrix_arr      0
#define cpu_has_centaur_mcr    0
#define cpu_has_clflush	       boot_cpu_has(X86_FEATURE_CLFLSH)

#endif /* __ASM_X8664_CPUFEATURE_H */