include/asm-mips/cpu-features.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2003, 2004 Ralf Baechle
   7  * Copyright (C) 2004  Maciej W. Rozycki
   8  */
   9 #ifndef __ASM_CPU_FEATURES_H
  10 #define __ASM_CPU_FEATURES_H
  11
  12
  13 #include <asm/cpu.h>
  14 #include <asm/cpu-info.h>
  15 #include <cpu-feature-overrides.h>
  16
  17 /*
  18  * SMP assumption: Options of CPU 0 are a superset of all processors.
  19  * This is true for all known MIPS systems.
  20  */
  21 #ifndef cpu_has_tlb
  22 #define cpu_has_tlb             (cpu_data[0].options & MIPS_CPU_TLB)
  23 #endif
  24 #ifndef cpu_has_4kex
  25 #define cpu_has_4kex            (cpu_data[0].options & MIPS_CPU_4KEX)
  26 #endif
  27 #ifndef cpu_has_3k_cache
  28 #define cpu_has_3k_cache        (cpu_data[0].options & MIPS_CPU_3K_CACHE)
  29 #endif
  30 #define cpu_has_6k_cache        0
  31 #define cpu_has_8k_cache        0
  32 #ifndef cpu_has_4k_cache
  33 #define cpu_has_4k_cache        (cpu_data[0].options & MIPS_CPU_4K_CACHE)
  34 #endif
  35 #ifndef cpu_has_tx39_cache
  36 #define cpu_has_tx39_cache      (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
  37 #endif
  38 #ifndef cpu_has_sb1_cache
  39 #define cpu_has_sb1_cache       (cpu_data[0].options & MIPS_CPU_SB1_CACHE)
  40 #endif
  41 #ifndef cpu_has_fpu
  42 #define cpu_has_fpu             (current_cpu_data.options & MIPS_CPU_FPU)
  43 #define raw_cpu_has_fpu         (raw_current_cpu_data.options & MIPS_CPU_FPU)
  44 #else
  45 #define raw_cpu_has_fpu         cpu_has_fpu
  46 #endif
  47 #ifndef cpu_has_32fpr
  48 #define cpu_has_32fpr           (cpu_data[0].options & MIPS_CPU_32FPR)
  49 #endif
  50 #ifndef cpu_has_counter
  51 #define cpu_has_counter         (cpu_data[0].options & MIPS_CPU_COUNTER)
  52 #endif
  53 #ifndef cpu_has_watch
  54 #define cpu_has_watch           (cpu_data[0].options & MIPS_CPU_WATCH)
  55 #endif
  56 #ifndef cpu_has_divec
  57 #define cpu_has_divec           (cpu_data[0].options & MIPS_CPU_DIVEC)
  58 #endif
  59 #ifndef cpu_has_vce
  60 #define cpu_has_vce             (cpu_data[0].options & MIPS_CPU_VCE)
  61 #endif
  62 #ifndef cpu_has_cache_cdex_p
  63 #define cpu_has_cache_cdex_p    (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
  64 #endif
  65 #ifndef cpu_has_cache_cdex_s
  66 #define cpu_has_cache_cdex_s    (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
  67 #endif
  68 #ifndef cpu_has_prefetch
  69 #define cpu_has_prefetch        (cpu_data[0].options & MIPS_CPU_PREFETCH)
  70 #endif
  71 #ifndef cpu_has_mcheck
  72 #define cpu_has_mcheck          (cpu_data[0].options & MIPS_CPU_MCHECK)
  73 #endif
  74 #ifndef cpu_has_ejtag
  75 #define cpu_has_ejtag           (cpu_data[0].options & MIPS_CPU_EJTAG)
  76 #endif
  77 #ifndef cpu_has_llsc
  78 #define cpu_has_llsc            (cpu_data[0].options & MIPS_CPU_LLSC)
  79 #endif
  80 #ifndef cpu_has_mips16
  81 #define cpu_has_mips16          (cpu_data[0].ases & MIPS_ASE_MIPS16)
  82 #endif
  83 #ifndef cpu_has_mdmx
  84 #define cpu_has_mdmx           (cpu_data[0].ases & MIPS_ASE_MDMX)
  85 #endif
  86 #ifndef cpu_has_mips3d
  87 #define cpu_has_mips3d         (cpu_data[0].ases & MIPS_ASE_MIPS3D)
  88 #endif
  89 #ifndef cpu_has_smartmips
  90 #define cpu_has_smartmips      (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
  91 #endif
  92 #ifndef cpu_has_vtag_icache
  93 #define cpu_has_vtag_icache     (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
  94 #endif
  95 #ifndef cpu_has_dc_aliases
  96 #define cpu_has_dc_aliases      (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
  97 #endif
  98 #ifndef cpu_has_ic_fills_f_dc
  99 #define cpu_has_ic_fills_f_dc   (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
 100 #endif
 101 #ifndef cpu_has_pindexed_dcache
 102 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
 103 #endif
 104
 105 /*
 106  * I-Cache snoops remote store.  This only matters on SMP.  Some multiprocessors
 107  * such as the R10000 have I-Caches that snoop local stores; the embedded ones
 108  * don't.  For maintaining I-cache coherency this means we need to flush the
 109  * D-cache all the way back to whever the I-cache does refills from, so the
 110  * I-cache has a chance to see the new data at all.  Then we have to flush the
 111  * I-cache also.
 112  * Note we may have been rescheduled and may no longer be running on the CPU
 113  * that did the store so we can't optimize this into only doing the flush on
 114  * the local CPU.
 115  */
 116 #ifndef cpu_icache_snoops_remote_store
 117 #ifdef CONFIG_SMP
 118 #define cpu_icache_snoops_remote_store  (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
 119 #else
 120 #define cpu_icache_snoops_remote_store  1
 121 #endif
 122 #endif
 123
 124 # ifndef cpu_has_mips32r1
 125 # define cpu_has_mips32r1       (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
 126 # endif
 127 # ifndef cpu_has_mips32r2
 128 # define cpu_has_mips32r2       (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
 129 # endif
 130 # ifndef cpu_has_mips64r1
 131 # define cpu_has_mips64r1       (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
 132 # endif
 133 # ifndef cpu_has_mips64r2
 134 # define cpu_has_mips64r2       (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
 135 # endif
 136
 137 /*
 138  * Shortcuts ...
 139  */
 140 #define cpu_has_mips32  (cpu_has_mips32r1 | cpu_has_mips32r2)
 141 #define cpu_has_mips64  (cpu_has_mips64r1 | cpu_has_mips64r2)
 142 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
 143 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
 144
 145 #ifndef cpu_has_dsp
 146 #define cpu_has_dsp             (cpu_data[0].ases & MIPS_ASE_DSP)
 147 #endif
 148
 149 #ifndef cpu_has_mipsmt
 150 #define cpu_has_mipsmt          (cpu_data[0].ases & MIPS_ASE_MIPSMT)
 151 #endif
 152
 153 #ifdef CONFIG_32BIT
 154 # ifndef cpu_has_nofpuex
 155 # define cpu_has_nofpuex        (cpu_data[0].options & MIPS_CPU_NOFPUEX)
 156 # endif
 157 # ifndef cpu_has_64bits
 158 # define cpu_has_64bits         (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 159 # endif
 160 # ifndef cpu_has_64bit_zero_reg
 161 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 162 # endif
 163 # ifndef cpu_has_64bit_gp_regs
 164 # define cpu_has_64bit_gp_regs          0
 165 # endif
 166 # ifndef cpu_has_64bit_addresses
 167 # define cpu_has_64bit_addresses        0
 168 # endif
 169 #endif
 170
 171 #ifdef CONFIG_64BIT
 172 # ifndef cpu_has_nofpuex
 173 # define cpu_has_nofpuex                0
 174 # endif
 175 # ifndef cpu_has_64bits
 176 # define cpu_has_64bits                 1
 177 # endif
 178 # ifndef cpu_has_64bit_zero_reg
 179 # define cpu_has_64bit_zero_reg         1
 180 # endif
 181 # ifndef cpu_has_64bit_gp_regs
 182 # define cpu_has_64bit_gp_regs          1
 183 # endif
 184 # ifndef cpu_has_64bit_addresses
 185 # define cpu_has_64bit_addresses        1
 186 # endif
 187 #endif
 188
 189 #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
 190 # define cpu_has_vint           (cpu_data[0].options & MIPS_CPU_VINT)
 191 #elif !defined(cpu_has_vint)
 192 # define cpu_has_vint                   0
 193 #endif
 194
 195 #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
 196 # define cpu_has_veic           (cpu_data[0].options & MIPS_CPU_VEIC)
 197 #elif !defined(cpu_has_veic)
 198 # define cpu_has_veic                   0
 199 #endif
 200
 201 #ifndef cpu_has_inclusive_pcaches
 202 #define cpu_has_inclusive_pcaches       (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
 203 #endif
 204
 205 #ifndef cpu_dcache_line_size
 206 #define cpu_dcache_line_size()  current_cpu_data.dcache.linesz
 207 #endif
 208 #ifndef cpu_icache_line_size
 209 #define cpu_icache_line_size()  current_cpu_data.icache.linesz
 210 #endif
 211 #ifndef cpu_scache_line_size
 212 #define cpu_scache_line_size()  current_cpu_data.scache.linesz
 213 #endif
 214
 215 #endif /* __ASM_CPU_FEATURES_H */