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 #endif
  44 #ifndef cpu_has_32fpr
  45 #define cpu_has_32fpr           (cpu_data[0].options & MIPS_CPU_32FPR)
  46 #endif
  47 #ifndef cpu_has_counter
  48 #define cpu_has_counter         (cpu_data[0].options & MIPS_CPU_COUNTER)
  49 #endif
  50 #ifndef cpu_has_watch
  51 #define cpu_has_watch           (cpu_data[0].options & MIPS_CPU_WATCH)
  52 #endif
  53 #ifndef cpu_has_divec
  54 #define cpu_has_divec           (cpu_data[0].options & MIPS_CPU_DIVEC)
  55 #endif
  56 #ifndef cpu_has_vce
  57 #define cpu_has_vce             (cpu_data[0].options & MIPS_CPU_VCE)
  58 #endif
  59 #ifndef cpu_has_cache_cdex_p
  60 #define cpu_has_cache_cdex_p    (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
  61 #endif
  62 #ifndef cpu_has_cache_cdex_s
  63 #define cpu_has_cache_cdex_s    (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
  64 #endif
  65 #ifndef cpu_has_prefetch
  66 #define cpu_has_prefetch        (cpu_data[0].options & MIPS_CPU_PREFETCH)
  67 #endif
  68 #ifndef cpu_has_mcheck
  69 #define cpu_has_mcheck          (cpu_data[0].options & MIPS_CPU_MCHECK)
  70 #endif
  71 #ifndef cpu_has_ejtag
  72 #define cpu_has_ejtag           (cpu_data[0].options & MIPS_CPU_EJTAG)
  73 #endif
  74 #ifndef cpu_has_llsc
  75 #define cpu_has_llsc            (cpu_data[0].options & MIPS_CPU_LLSC)
  76 #endif
  77 #ifndef cpu_has_mips16
  78 #define cpu_has_mips16          (cpu_data[0].ases & MIPS_ASE_MIPS16)
  79 #endif
  80 #ifndef cpu_has_mdmx
  81 #define cpu_has_mdmx           (cpu_data[0].ases & MIPS_ASE_MDMX)
  82 #endif
  83 #ifndef cpu_has_mips3d
  84 #define cpu_has_mips3d         (cpu_data[0].ases & MIPS_ASE_MIPS3D)
  85 #endif
  86 #ifndef cpu_has_smartmips
  87 #define cpu_has_smartmips      (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
  88 #endif
  89 #ifndef cpu_has_vtag_icache
  90 #define cpu_has_vtag_icache     (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
  91 #endif
  92 #ifndef cpu_has_dc_aliases
  93 #define cpu_has_dc_aliases      (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
  94 #endif
  95 #ifndef cpu_has_ic_fills_f_dc
  96 #define cpu_has_ic_fills_f_dc   (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
  97 #endif
  98 #ifndef cpu_has_pindexed_dcache
  99 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
 100 #endif
 101
 102 /*
 103  * I-Cache snoops remote store.  This only matters on SMP.  Some multiprocessors
 104  * such as the R10000 have I-Caches that snoop local stores; the embedded ones
 105  * don't.  For maintaining I-cache coherency this means we need to flush the
 106  * D-cache all the way back to whever the I-cache does refills from, so the
 107  * I-cache has a chance to see the new data at all.  Then we have to flush the
 108  * I-cache also.
 109  * Note we may have been rescheduled and may no longer be running on the CPU
 110  * that did the store so we can't optimize this into only doing the flush on
 111  * the local CPU.
 112  */
 113 #ifndef cpu_icache_snoops_remote_store
 114 #ifdef CONFIG_SMP
 115 #define cpu_icache_snoops_remote_store  (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
 116 #else
 117 #define cpu_icache_snoops_remote_store  1
 118 #endif
 119 #endif
 120
 121 # ifndef cpu_has_mips32r1
 122 # define cpu_has_mips32r1       (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
 123 # endif
 124 # ifndef cpu_has_mips32r2
 125 # define cpu_has_mips32r2       (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
 126 # endif
 127 # ifndef cpu_has_mips64r1
 128 # define cpu_has_mips64r1       (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
 129 # endif
 130 # ifndef cpu_has_mips64r2
 131 # define cpu_has_mips64r2       (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
 132 # endif
 133
 134 /*
 135  * Shortcuts ...
 136  */
 137 #define cpu_has_mips32  (cpu_has_mips32r1 | cpu_has_mips32r2)
 138 #define cpu_has_mips64  (cpu_has_mips64r1 | cpu_has_mips64r2)
 139 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
 140 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
 141
 142 #ifndef cpu_has_dsp
 143 #define cpu_has_dsp             (cpu_data[0].ases & MIPS_ASE_DSP)
 144 #endif
 145
 146 #ifdef CONFIG_MIPS_MT
 147 #ifndef cpu_has_mipsmt
 148 # define cpu_has_mipsmt         (cpu_data[0].ases & MIPS_ASE_MIPSMT)
 149 #endif
 150 #else
 151 # define cpu_has_mipsmt         0
 152 #endif
 153
 154 #ifdef CONFIG_32BIT
 155 # ifndef cpu_has_nofpuex
 156 # define cpu_has_nofpuex        (cpu_data[0].options & MIPS_CPU_NOFPUEX)
 157 # endif
 158 # ifndef cpu_has_64bits
 159 # define cpu_has_64bits         (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 160 # endif
 161 # ifndef cpu_has_64bit_zero_reg
 162 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 163 # endif
 164 # ifndef cpu_has_64bit_gp_regs
 165 # define cpu_has_64bit_gp_regs          0
 166 # endif
 167 # ifndef cpu_has_64bit_addresses
 168 # define cpu_has_64bit_addresses        0
 169 # endif
 170 #endif
 171
 172 #ifdef CONFIG_64BIT
 173 # ifndef cpu_has_nofpuex
 174 # define cpu_has_nofpuex                0
 175 # endif
 176 # ifndef cpu_has_64bits
 177 # define cpu_has_64bits                 1
 178 # endif
 179 # ifndef cpu_has_64bit_zero_reg
 180 # define cpu_has_64bit_zero_reg         1
 181 # endif
 182 # ifndef cpu_has_64bit_gp_regs
 183 # define cpu_has_64bit_gp_regs          1
 184 # endif
 185 # ifndef cpu_has_64bit_addresses
 186 # define cpu_has_64bit_addresses        1
 187 # endif
 188 #endif
 189
 190 #ifdef CONFIG_CPU_MIPSR2
 191 # if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
 192 #  define cpu_has_vint          (cpu_data[0].options & MIPS_CPU_VINT)
 193 # else
 194 #  define cpu_has_vint                  0
 195 # endif
 196 # if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
 197 #  define cpu_has_veic          (cpu_data[0].options & MIPS_CPU_VEIC)
 198 # else
 199 #  define cpu_has_veic                  0
 200 # endif
 201 #else
 202 # define cpu_has_vint                   0
 203 # define cpu_has_veic                   0
 204 #endif
 205
 206 #ifndef cpu_has_subset_pcaches
 207 #define cpu_has_subset_pcaches  (cpu_data[0].options & MIPS_CPU_SUBSET_CACHES)
 208 #endif
 209
 210 #ifndef cpu_dcache_line_size
 211 #define cpu_dcache_line_size()  current_cpu_data.dcache.linesz
 212 #endif
 213 #ifndef cpu_icache_line_size
 214 #define cpu_icache_line_size()  current_cpu_data.icache.linesz
 215 #endif
 216 #ifndef cpu_scache_line_size
 217 #define cpu_scache_line_size()  current_cpu_data.scache.linesz
 218 #endif
 219
 220 #endif /* __ASM_CPU_FEATURES_H */