kernel/include/smp.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #ifndef _SMP_H
  21 #define _SMP_H
  22
  23 #define SMP_ARCH_x86            0x1
  24 #define SMP_ARCH_ARM            0x2
  25 #define SMP_ARCH_PPC            0x3
  26 #define SMP_ARCH_SPARC          0x4
  27 #define SMP_ARCH_ALPHA          0x5
  28
  29 #define SMP_STATE_CPU_UP        0x1
  30 #define SMP_STATE_CPU_DOWN      0x2
  31
  32 #define SMP_FLAGS_CPU_BS        0x1
  33 #define SMP_FLAGS_CPU_AP        0x2
  34
  35 /* x86 specific cpu features */
  36 #define SMP_ARCH_x86_FEATURE_FPU        0x00000001 // x87 fpu
  37 #define SMP_ARCH_x86_FEATURE_VME        0x00000002 // virtual 8086
  38 #define SMP_ARCH_x86_FEATURE_DE         0x00000004 // debugging extensions
  39 #define SMP_ARCH_x86_FEATURE_PSE        0x00000008 // page size extensions
  40 #define SMP_ARCH_x86_FEATURE_TSC        0x00000010 // rdtsc instruction
  41 #define SMP_ARCH_x86_FEATURE_MSR        0x00000020 // rdmsr/wrmsr instruction
  42 #define SMP_ARCH_x86_FEATURE_PAE        0x00000040 // extended 3 level page table addressing
  43 #define SMP_ARCH_x86_FEATURE_MCE        0x00000080 // machine check exception
  44 #define SMP_ARCH_x86_FEATURE_CX8        0x00000100 // cmpxchg8b instruction
  45 #define SMP_ARCH_x86_FEATURE_APIC       0x00000200 // local apic on chip
  46 #define SMP_ARCH_x86_FEATURE_SEP        0x00000800 // SYSENTER/SYSEXIT
  47 #define SMP_ARCH_x86_FEATURE_MTRR       0x00001000 // MTRR
  48 #define SMP_ARCH_x86_FEATURE_PGE        0x00002000 // paging global bit
  49 #define SMP_ARCH_x86_FEATURE_MCA        0x00004000 // machine check architecture
  50 #define SMP_ARCH_x86_FEATURE_CMOV       0x00008000 // cmov instruction
  51 #define SMP_ARCH_x86_FEATURE_PAT        0x00010000 // page attribute table
  52 #define SMP_ARCH_x86_FEATURE_PSE36      0x00020000 // page size extensions with 4MB pages
  53 #define SMP_ARCH_x86_FEATURE_PSN        0x00040000 // processor serial number
  54 #define SMP_ARCH_x86_FEATURE_CLFSH      0x00080000 // cflush instruction
  55 #define SMP_ARCH_x86_FEATURE_DS         0x00200000 // debug store
  56 #define SMP_ARCH_x86_FEATURE_ACPI       0x00400000 // thermal monitor and clock ctrl
  57 #define SMP_ARCH_x86_FEATURE_MMX        0x00800000 // mmx instructions
  58 #define SMP_ARCH_x86_FEATURE_FXSR       0x01000000 // FXSAVE/FXRSTOR instruction
  59 #define SMP_ARCH_x86_FEATURE_SSE        0x02000000 // SSE
  60 #define SMP_ARCH_x86_FEATURE_SSE2       0x04000000 // SSE2
  61 #define SMP_ARCH_x86_FEATURE_SS         0x08000000 // self snoop
  62 #define SMP_ARCH_x86_FEATURE_HTT        0x10000000 // hyperthreading
  63 #define SMP_ARCH_x86_FEATURE_TM         0x20000000 // thermal monitor
  64 #define SMP_ARCH_x86_FEATURE_PBE        0x80000000 // pending break enable
  65
  66 #define SMP_ARCH_x86_TRAMPOLINE         0x7000
  67
  68 /* x86 specific SMP attributes */
  69 typedef struct {
  70         unsigned char lapic_id;
  71         unsigned char lapic_ver;
  72
  73         unsigned cpuid;
  74         unsigned features;
  75 } smp_arch_x86;
  76
  77 /* SMP CPU structure */
  78 typedef struct smp_cpu_context {
  79         struct smp_cpu_context *next, *prev;
  80
  81         unsigned char arch;
  82
  83         void *arch_spec;
  84
  85         unsigned char flags;
  86         unsigned char state;
  87 } smp_cpu_t;
  88
  89
  90 /* externs */
  91 extern smp_cpu_t *smp_cpu_getnextcpu (smp_cpu_t *cpu);
  92 extern void smp_cpu_check ();
  93 extern unsigned smp_cpu_register (unsigned char arch, unsigned char state, unsigned char flags, void *arch_spec);
  94 extern unsigned int init_smp ();
  95
  96 #endif