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133 lines
5.1 KiB
C
133 lines
5.1 KiB
C
//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: CPUID related functions //
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// //
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// //
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// Copyright © 2018-2020 The OS/K Team //
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// //
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// This file is part of OS/K. //
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// //
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// OS/K is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 3 of the License, or //
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// any later version. //
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// //
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// OS/K is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY//without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#ifndef _KERNEL_H
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#include <kernel.h>
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#endif
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#ifndef _KALKERN_CPUID_H
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#define _KALKERN_CPUID_H
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// -------------------------------------------------------------------------- //
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// CPU features masks
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enum {
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FEAT_ECX_SSE3 = 1 << 0,
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FEAT_ECX_PCLMUL = 1 << 1,
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FEAT_ECX_DTES64 = 1 << 2,
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FEAT_ECX_MONITOR = 1 << 3,
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FEAT_ECX_DS_CPL = 1 << 4,
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FEAT_ECX_VMX = 1 << 5,
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FEAT_ECX_SMX = 1 << 6,
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FEAT_ECX_EST = 1 << 7,
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FEAT_ECX_TM2 = 1 << 8,
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FEAT_ECX_SSSE3 = 1 << 9,
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FEAT_ECX_CID = 1 << 10,
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FEAT_ECX_FMA = 1 << 12,
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FEAT_ECX_CX16 = 1 << 13,
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FEAT_ECX_ETPRD = 1 << 14,
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FEAT_ECX_PDCM = 1 << 15,
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FEAT_ECX_PCIDE = 1 << 17,
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FEAT_ECX_DCA = 1 << 18,
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FEAT_ECX_SSE4_1 = 1 << 19,
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FEAT_ECX_SSE4_2 = 1 << 20,
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FEAT_ECX_x2APIC = 1 << 21,
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FEAT_ECX_MOVBE = 1 << 22,
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FEAT_ECX_POPCNT = 1 << 23,
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FEAT_ECX_AES = 1 << 25,
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FEAT_ECX_XSAVE = 1 << 26,
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FEAT_ECX_OSXSAVE = 1 << 27,
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FEAT_ECX_AVX = 1 << 28,
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FEAT_EDX_FPU = 1 << 0,
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FEAT_EDX_VME = 1 << 1,
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FEAT_EDX_DE = 1 << 2,
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FEAT_EDX_PSE = 1 << 3,
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FEAT_EDX_TSC = 1 << 4,
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FEAT_EDX_MSR = 1 << 5,
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FEAT_EDX_PAE = 1 << 6,
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FEAT_EDX_MCE = 1 << 7,
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FEAT_EDX_CX8 = 1 << 8,
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FEAT_EDX_APIC = 1 << 9,
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FEAT_EDX_SEP = 1 << 11,
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FEAT_EDX_MTRR = 1 << 12,
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FEAT_EDX_PGE = 1 << 13,
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FEAT_EDX_MCA = 1 << 14,
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FEAT_EDX_CMOV = 1 << 15,
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FEAT_EDX_PAT = 1 << 16,
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FEAT_EDX_PSE36 = 1 << 17,
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FEAT_EDX_PSN = 1 << 18,
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FEAT_EDX_CLF = 1 << 19,
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FEAT_EDX_DTES = 1 << 21,
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FEAT_EDX_ACPI = 1 << 22,
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FEAT_EDX_MMX = 1 << 23,
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FEAT_EDX_FXSR = 1 << 24,
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FEAT_EDX_SSE = 1 << 25,
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FEAT_EDX_SSE2 = 1 << 26,
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FEAT_EDX_SS = 1 << 27,
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FEAT_EDX_HTT = 1 << 28,
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FEAT_EDX_TM1 = 1 << 29,
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FEAT_EDX_IA64 = 1 << 30,
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FEAT_EDX_PBE = 1 << 31
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};
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// -------------------------------------------------------------------------- //
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// Issue a single request to CPUID. Fits 'intel features', for instance
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// note that even if only "eax" and "edx" are of interest, other registers
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// will be modified by the operation, so we need to tell the compiler about it.
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static inline void CpuCpuid(int code, uint *eax, uint *edx)
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{
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asm volatile("cpuid":"=a"(*eax),"=d"(*edx):"a"(code):"ecx","ebx");
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}
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// Issue a complete request, storing general registers output as a string
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static inline int CpuCpuidString(int code, uint where[4])
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{
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asm volatile("cpuid":"=a"(*where),"=b"(*(where+1)),
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"=c"(*(where+3)),"=d"(*(where+2)):"a"(code));
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return (int)where[0];
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}
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// Read the TSC register
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static inline ulong CpuRdtsc(void)
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{
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uint lo, hi;
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asm volatile ("rdtsc" : "=a"(lo), "=d"(hi));
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return ( (ulong)lo)|( ((ulong)hi)<<32 );
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}
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void KeGetCpuInfos(void);
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double KeGetCpuFrequency(void);
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void KeActivateSSE(void);
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// -------------------------------------------------------------------------- //
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#endif
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