include/asm-ppc64/cputable.h

   1 /*
   2  *  include/asm-ppc64/cputable.h
   3  *
   4  *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
   5  *
   6  *  Modifications for ppc64:
   7  *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
   8  *
   9  *  This program is free software; you can redistribute it and/or
  10  *  modify it under the terms of the GNU General Public License
  11  *  as published by the Free Software Foundation; either version
  12  *  2 of the License, or (at your option) any later version.
  13  */
  14
  15 #ifndef __ASM_PPC_CPUTABLE_H
  16 #define __ASM_PPC_CPUTABLE_H
  17
  18 #include <linux/config.h>
  19 #include <asm/page.h> /* for ASM_CONST */
  20
  21 /* Exposed to userland CPU features - Must match ppc32 definitions */
  22 #define PPC_FEATURE_32                  0x80000000
  23 #define PPC_FEATURE_64                  0x40000000
  24 #define PPC_FEATURE_601_INSTR           0x20000000
  25 #define PPC_FEATURE_HAS_ALTIVEC         0x10000000
  26 #define PPC_FEATURE_HAS_FPU             0x08000000
  27 #define PPC_FEATURE_HAS_MMU             0x04000000
  28 #define PPC_FEATURE_HAS_4xxMAC          0x02000000
  29 #define PPC_FEATURE_UNIFIED_CACHE       0x01000000
  30
  31 #ifdef __KERNEL__
  32
  33 #ifndef __ASSEMBLY__
  34
  35 /* This structure can grow, it's real size is used by head.S code
  36  * via the mkdefs mechanism.
  37  */
  38 struct cpu_spec;
  39
  40 typedef void (*cpu_setup_t)(unsigned long offset, struct cpu_spec* spec);
  41
  42 struct cpu_spec {
  43         /* CPU is matched via (PVR & pvr_mask) == pvr_value */
  44         unsigned int    pvr_mask;
  45         unsigned int    pvr_value;
  46
  47         char            *cpu_name;
  48         unsigned long   cpu_features;           /* Kernel features */
  49         unsigned int    cpu_user_features;      /* Userland features */
  50
  51         /* cache line sizes */
  52         unsigned int    icache_bsize;
  53         unsigned int    dcache_bsize;
  54
  55         /* this is called to initialize various CPU bits like L1 cache,
  56          * BHT, SPD, etc... from head.S before branching to identify_machine
  57          */
  58         cpu_setup_t     cpu_setup;
  59 };
  60
  61 extern struct cpu_spec          cpu_specs[];
  62 extern struct cpu_spec          *cur_cpu_spec;
  63
  64 static inline unsigned long cpu_has_feature(unsigned long feature)
  65 {
  66         return cur_cpu_spec->cpu_features & feature;
  67 }
  68
  69 #endif /* __ASSEMBLY__ */
  70
  71 /* CPU kernel features */
  72
  73 /* Retain the 32b definitions for the time being - use bottom half of word */
  74 #define CPU_FTR_SPLIT_ID_CACHE          ASM_CONST(0x0000000000000001)
  75 #define CPU_FTR_L2CR                    ASM_CONST(0x0000000000000002)
  76 #define CPU_FTR_SPEC7450                ASM_CONST(0x0000000000000004)
  77 #define CPU_FTR_ALTIVEC                 ASM_CONST(0x0000000000000008)
  78 #define CPU_FTR_TAU                     ASM_CONST(0x0000000000000010)
  79 #define CPU_FTR_CAN_DOZE                ASM_CONST(0x0000000000000020)
  80 #define CPU_FTR_USE_TB                  ASM_CONST(0x0000000000000040)
  81 #define CPU_FTR_604_PERF_MON            ASM_CONST(0x0000000000000080)
  82 #define CPU_FTR_601                     ASM_CONST(0x0000000000000100)
  83 #define CPU_FTR_HPTE_TABLE              ASM_CONST(0x0000000000000200)
  84 #define CPU_FTR_CAN_NAP                 ASM_CONST(0x0000000000000400)
  85 #define CPU_FTR_L3CR                    ASM_CONST(0x0000000000000800)
  86 #define CPU_FTR_L3_DISABLE_NAP          ASM_CONST(0x0000000000001000)
  87 #define CPU_FTR_NAP_DISABLE_L2_PR       ASM_CONST(0x0000000000002000)
  88 #define CPU_FTR_DUAL_PLL_750FX          ASM_CONST(0x0000000000004000)
  89
  90 /* Add the 64b processor unique features in the top half of the word */
  91 #define CPU_FTR_SLB                     ASM_CONST(0x0000000100000000)
  92 #define CPU_FTR_16M_PAGE                ASM_CONST(0x0000000200000000)
  93 #define CPU_FTR_TLBIEL                  ASM_CONST(0x0000000400000000)
  94 #define CPU_FTR_NOEXECUTE               ASM_CONST(0x0000000800000000)
  95 #define CPU_FTR_NODSISRALIGN            ASM_CONST(0x0000001000000000)
  96 #define CPU_FTR_IABR                    ASM_CONST(0x0000002000000000)
  97 #define CPU_FTR_MMCRA                   ASM_CONST(0x0000004000000000)
  98 #define CPU_FTR_PMC8                    ASM_CONST(0x0000008000000000)
  99 #define CPU_FTR_SMT                     ASM_CONST(0x0000010000000000)
 100 #define CPU_FTR_COHERENT_ICACHE         ASM_CONST(0x0000020000000000)
 101 #define CPU_FTR_LOCKLESS_TLBIE          ASM_CONST(0x0000040000000000)
 102 #define CPU_FTR_MMCRA_SIHV              ASM_CONST(0x0000080000000000)
 103 #define CPU_FTR_CTRL                    ASM_CONST(0x0000100000000000)
 104
 105 #ifndef __ASSEMBLY__
 106
 107 #define COMMON_USER_PPC64       (PPC_FEATURE_32 | PPC_FEATURE_64 | \
 108                                  PPC_FEATURE_HAS_FPU | PPC_FEATURE_HAS_MMU)
 109
 110 #define CPU_FTR_PPCAS_ARCH_V2_BASE (CPU_FTR_SLB | \
 111                                  CPU_FTR_TLBIEL | CPU_FTR_NOEXECUTE | \
 112                                  CPU_FTR_NODSISRALIGN | CPU_FTR_CTRL)
 113
 114 /* iSeries doesn't support large pages */
 115 #ifdef CONFIG_PPC_ISERIES
 116 #define CPU_FTR_PPCAS_ARCH_V2   (CPU_FTR_PPCAS_ARCH_V2_BASE)
 117 #else
 118 #define CPU_FTR_PPCAS_ARCH_V2   (CPU_FTR_PPCAS_ARCH_V2_BASE | CPU_FTR_16M_PAGE)
 119 #endif /* CONFIG_PPC_ISERIES */
 120
 121 #endif /* __ASSEMBLY */
 122
 123 #ifdef __ASSEMBLY__
 124
 125 #define BEGIN_FTR_SECTION               98:
 126
 127 #define END_FTR_SECTION(msk, val)               \
 128 99:                                             \
 129         .section __ftr_fixup,"a";               \
 130         .align 3;                               \
 131         .llong msk;                             \
 132         .llong val;                             \
 133         .llong 98b;                             \
 134         .llong 99b;                             \
 135         .previous
 136
 137 #else
 138
 139 #define BEGIN_FTR_SECTION               "98:\n"
 140 #define END_FTR_SECTION(msk, val)               \
 141 "99:\n"                                         \
 142 "       .section __ftr_fixup,\"a\";\n"          \
 143 "       .align 3;\n"                            \
 144 "       .llong "#msk";\n"                       \
 145 "       .llong "#val";\n"                       \
 146 "       .llong 98b;\n"                          \
 147 "       .llong 99b;\n"                          \
 148 "       .previous\n"
 149
 150 #endif /* __ASSEMBLY__ */
 151
 152 #define END_FTR_SECTION_IFSET(msk)      END_FTR_SECTION((msk), (msk))
 153 #define END_FTR_SECTION_IFCLR(msk)      END_FTR_SECTION((msk), 0)
 154
 155 #endif /* __ASM_PPC_CPUTABLE_H */
 156 #endif /* __KERNEL__ */
 157