arch/mips/include/asm/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 #include <asm/cpu.h>
  13 #include <asm/cpu-info.h>
  14 #include <asm/isa-rev.h>
  15 #include <cpu-feature-overrides.h>
  16
  17 #define __ase(ase)                      (cpu_data[0].ases & (ase))
  18 #define __isa(isa)                      (cpu_data[0].isa_level & (isa))
  19 #define __opt(opt)                      (cpu_data[0].options & (opt))
  20
  21 /*
  22  * Check if MIPS_ISA_REV is >= isa *and* an option or ASE is detected during
  23  * boot (typically by cpu_probe()).
  24  *
  25  * Note that these should only be used in cases where a kernel built for an
  26  * older ISA *cannot* run on a CPU which supports the feature in question. For
  27  * example this may be used for features introduced with MIPSr6, since a kernel
  28  * built for an older ISA cannot run on a MIPSr6 CPU. This should not be used
  29  * for MIPSr2 features however, since a MIPSr1 or earlier kernel might run on a
  30  * MIPSr2 CPU.
  31  */
  32 #define __isa_ge_and_ase(isa, ase)      ((MIPS_ISA_REV >= (isa)) && __ase(ase))
  33 #define __isa_ge_and_opt(isa, opt)      ((MIPS_ISA_REV >= (isa)) && __opt(opt))
  34
  35 /*
  36  * Check if MIPS_ISA_REV is >= isa *or* an option or ASE is detected during
  37  * boot (typically by cpu_probe()).
  38  *
  39  * These are for use with features that are optional up until a particular ISA
  40  * revision & then become required.
  41  */
  42 #define __isa_ge_or_ase(isa, ase)       ((MIPS_ISA_REV >= (isa)) || __ase(ase))
  43 #define __isa_ge_or_opt(isa, opt)       ((MIPS_ISA_REV >= (isa)) || __opt(opt))
  44
  45 /*
  46  * Check if MIPS_ISA_REV is < isa *and* an option or ASE is detected during
  47  * boot (typically by cpu_probe()).
  48  *
  49  * These are for use with features that are optional up until a particular ISA
  50  * revision & are then removed - ie. no longer present in any CPU implementing
  51  * the given ISA revision.
  52  */
  53 #define __isa_lt_and_ase(isa, ase)      ((MIPS_ISA_REV < (isa)) && __ase(ase))
  54 #define __isa_lt_and_opt(isa, opt)      ((MIPS_ISA_REV < (isa)) && __opt(opt))
  55
  56 /*
  57  * Similarly allow for ISA level checks that take into account knowledge of the
  58  * ISA targeted by the kernel build, provided by MIPS_ISA_REV.
  59  */
  60 #define __isa_ge_and_flag(isa, flag)    ((MIPS_ISA_REV >= (isa)) && __isa(flag))
  61 #define __isa_ge_or_flag(isa, flag)     ((MIPS_ISA_REV >= (isa)) || __isa(flag))
  62 #define __isa_lt_and_flag(isa, flag)    ((MIPS_ISA_REV < (isa)) && __isa(flag))
  63 #define __isa_range(ge, lt) \
  64         ((MIPS_ISA_REV >= (ge)) && (MIPS_ISA_REV < (lt)))
  65 #define __isa_range_or_flag(ge, lt, flag) \
  66         (__isa_range(ge, lt) || ((MIPS_ISA_REV < (lt)) && __isa(flag)))
  67
  68 /*
  69  * SMP assumption: Options of CPU 0 are a superset of all processors.
  70  * This is true for all known MIPS systems.
  71  */
  72 #ifndef cpu_has_tlb
  73 #define cpu_has_tlb             __opt(MIPS_CPU_TLB)
  74 #endif
  75 #ifndef cpu_has_ftlb
  76 #define cpu_has_ftlb            __opt(MIPS_CPU_FTLB)
  77 #endif
  78 #ifndef cpu_has_tlbinv
  79 #define cpu_has_tlbinv          __opt(MIPS_CPU_TLBINV)
  80 #endif
  81 #ifndef cpu_has_segments
  82 #define cpu_has_segments        __opt(MIPS_CPU_SEGMENTS)
  83 #endif
  84 #ifndef cpu_has_eva
  85 #define cpu_has_eva             __opt(MIPS_CPU_EVA)
  86 #endif
  87 #ifndef cpu_has_htw
  88 #define cpu_has_htw             __opt(MIPS_CPU_HTW)
  89 #endif
  90 #ifndef cpu_has_ldpte
  91 #define cpu_has_ldpte           __opt(MIPS_CPU_LDPTE)
  92 #endif
  93 #ifndef cpu_has_rixiex
  94 #define cpu_has_rixiex          __isa_ge_or_opt(6, MIPS_CPU_RIXIEX)
  95 #endif
  96 #ifndef cpu_has_maar
  97 #define cpu_has_maar            __opt(MIPS_CPU_MAAR)
  98 #endif
  99 #ifndef cpu_has_rw_llb
 100 #define cpu_has_rw_llb          __isa_ge_or_opt(6, MIPS_CPU_RW_LLB)
 101 #endif
 102
 103 /*
 104  * For the moment we don't consider R6000 and R8000 so we can assume that
 105  * anything that doesn't support R4000-style exceptions and interrupts is
 106  * R3000-like.  Users should still treat these two macro definitions as
 107  * opaque.
 108  */
 109 #ifndef cpu_has_3kex
 110 #define cpu_has_3kex            (!cpu_has_4kex)
 111 #endif
 112 #ifndef cpu_has_4kex
 113 #define cpu_has_4kex            __isa_ge_or_opt(1, MIPS_CPU_4KEX)
 114 #endif
 115 #ifndef cpu_has_3k_cache
 116 #define cpu_has_3k_cache        __isa_lt_and_opt(1, MIPS_CPU_3K_CACHE)
 117 #endif
 118 #define cpu_has_6k_cache        0
 119 #define cpu_has_8k_cache        0
 120 #ifndef cpu_has_4k_cache
 121 #define cpu_has_4k_cache        __isa_ge_or_opt(1, MIPS_CPU_4K_CACHE)
 122 #endif
 123 #ifndef cpu_has_tx39_cache
 124 #define cpu_has_tx39_cache      __opt(MIPS_CPU_TX39_CACHE)
 125 #endif
 126 #ifndef cpu_has_octeon_cache
 127 #define cpu_has_octeon_cache    0
 128 #endif
 129 /* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work.  */
 130 #ifndef cpu_has_fpu
 131 # ifdef CONFIG_MIPS_FP_SUPPORT
 132 #  define cpu_has_fpu           (current_cpu_data.options & MIPS_CPU_FPU)
 133 #  define raw_cpu_has_fpu       (raw_current_cpu_data.options & MIPS_CPU_FPU)
 134 # else
 135 #  define cpu_has_fpu           0
 136 #  define raw_cpu_has_fpu       0
 137 # endif
 138 #else
 139 # define raw_cpu_has_fpu        cpu_has_fpu
 140 #endif
 141 #ifndef cpu_has_32fpr
 142 #define cpu_has_32fpr           __isa_ge_or_opt(1, MIPS_CPU_32FPR)
 143 #endif
 144 #ifndef cpu_has_counter
 145 #define cpu_has_counter         __opt(MIPS_CPU_COUNTER)
 146 #endif
 147 #ifndef cpu_has_watch
 148 #define cpu_has_watch           __opt(MIPS_CPU_WATCH)
 149 #endif
 150 #ifndef cpu_has_divec
 151 #define cpu_has_divec           __isa_ge_or_opt(1, MIPS_CPU_DIVEC)
 152 #endif
 153 #ifndef cpu_has_vce
 154 #define cpu_has_vce             __opt(MIPS_CPU_VCE)
 155 #endif
 156 #ifndef cpu_has_cache_cdex_p
 157 #define cpu_has_cache_cdex_p    __opt(MIPS_CPU_CACHE_CDEX_P)
 158 #endif
 159 #ifndef cpu_has_cache_cdex_s
 160 #define cpu_has_cache_cdex_s    __opt(MIPS_CPU_CACHE_CDEX_S)
 161 #endif
 162 #ifndef cpu_has_prefetch
 163 #define cpu_has_prefetch        __isa_ge_or_opt(1, MIPS_CPU_PREFETCH)
 164 #endif
 165 #ifndef cpu_has_mcheck
 166 #define cpu_has_mcheck          __isa_ge_or_opt(1, MIPS_CPU_MCHECK)
 167 #endif
 168 #ifndef cpu_has_ejtag
 169 #define cpu_has_ejtag           __opt(MIPS_CPU_EJTAG)
 170 #endif
 171 #ifndef cpu_has_llsc
 172 #define cpu_has_llsc            __isa_ge_or_opt(1, MIPS_CPU_LLSC)
 173 #endif
 174 #ifndef cpu_has_bp_ghist
 175 #define cpu_has_bp_ghist        __opt(MIPS_CPU_BP_GHIST)
 176 #endif
 177 #ifndef kernel_uses_llsc
 178 #define kernel_uses_llsc        cpu_has_llsc
 179 #endif
 180 #ifndef cpu_has_guestctl0ext
 181 #define cpu_has_guestctl0ext    __opt(MIPS_CPU_GUESTCTL0EXT)
 182 #endif
 183 #ifndef cpu_has_guestctl1
 184 #define cpu_has_guestctl1       __opt(MIPS_CPU_GUESTCTL1)
 185 #endif
 186 #ifndef cpu_has_guestctl2
 187 #define cpu_has_guestctl2       __opt(MIPS_CPU_GUESTCTL2)
 188 #endif
 189 #ifndef cpu_has_guestid
 190 #define cpu_has_guestid         __opt(MIPS_CPU_GUESTID)
 191 #endif
 192 #ifndef cpu_has_drg
 193 #define cpu_has_drg             __opt(MIPS_CPU_DRG)
 194 #endif
 195 #ifndef cpu_has_mips16
 196 #define cpu_has_mips16          __isa_lt_and_ase(6, MIPS_ASE_MIPS16)
 197 #endif
 198 #ifndef cpu_has_mips16e2
 199 #define cpu_has_mips16e2        __isa_lt_and_ase(6, MIPS_ASE_MIPS16E2)
 200 #endif
 201 #ifndef cpu_has_mdmx
 202 #define cpu_has_mdmx            __isa_lt_and_ase(6, MIPS_ASE_MDMX)
 203 #endif
 204 #ifndef cpu_has_mips3d
 205 #define cpu_has_mips3d          __isa_lt_and_ase(6, MIPS_ASE_MIPS3D)
 206 #endif
 207 #ifndef cpu_has_smartmips
 208 #define cpu_has_smartmips       __isa_lt_and_ase(6, MIPS_ASE_SMARTMIPS)
 209 #endif
 210
 211 #ifndef cpu_has_rixi
 212 #define cpu_has_rixi            __isa_ge_or_opt(6, MIPS_CPU_RIXI)
 213 #endif
 214
 215 #ifndef cpu_has_mmips
 216 # if defined(__mips_micromips)
 217 #  define cpu_has_mmips         1
 218 # elif defined(CONFIG_SYS_SUPPORTS_MICROMIPS)
 219 #  define cpu_has_mmips         __opt(MIPS_CPU_MICROMIPS)
 220 # else
 221 #  define cpu_has_mmips         0
 222 # endif
 223 #endif
 224
 225 #ifndef cpu_has_lpa
 226 #define cpu_has_lpa             __opt(MIPS_CPU_LPA)
 227 #endif
 228 #ifndef cpu_has_mvh
 229 #define cpu_has_mvh             __opt(MIPS_CPU_MVH)
 230 #endif
 231 #ifndef cpu_has_xpa
 232 #define cpu_has_xpa             (cpu_has_lpa && cpu_has_mvh)
 233 #endif
 234 #ifndef cpu_has_vtag_icache
 235 #define cpu_has_vtag_icache     (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
 236 #endif
 237 #ifndef cpu_has_dc_aliases
 238 #define cpu_has_dc_aliases      (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
 239 #endif
 240 #ifndef cpu_has_ic_fills_f_dc
 241 #define cpu_has_ic_fills_f_dc   (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
 242 #endif
 243 #ifndef cpu_has_pindexed_dcache
 244 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
 245 #endif
 246
 247 /*
 248  * I-Cache snoops remote store.  This only matters on SMP.  Some multiprocessors
 249  * such as the R10000 have I-Caches that snoop local stores; the embedded ones
 250  * don't.  For maintaining I-cache coherency this means we need to flush the
 251  * D-cache all the way back to whever the I-cache does refills from, so the
 252  * I-cache has a chance to see the new data at all.  Then we have to flush the
 253  * I-cache also.
 254  * Note we may have been rescheduled and may no longer be running on the CPU
 255  * that did the store so we can't optimize this into only doing the flush on
 256  * the local CPU.
 257  */
 258 #ifndef cpu_icache_snoops_remote_store
 259 #ifdef CONFIG_SMP
 260 #define cpu_icache_snoops_remote_store  (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
 261 #else
 262 #define cpu_icache_snoops_remote_store  1
 263 #endif
 264 #endif
 265
 266 #ifndef cpu_has_mips_1
 267 # define cpu_has_mips_1         (MIPS_ISA_REV < 6)
 268 #endif
 269 #ifndef cpu_has_mips_2
 270 # define cpu_has_mips_2         __isa_lt_and_flag(6, MIPS_CPU_ISA_II)
 271 #endif
 272 #ifndef cpu_has_mips_3
 273 # define cpu_has_mips_3         __isa_lt_and_flag(6, MIPS_CPU_ISA_III)
 274 #endif
 275 #ifndef cpu_has_mips_4
 276 # define cpu_has_mips_4         __isa_lt_and_flag(6, MIPS_CPU_ISA_IV)
 277 #endif
 278 #ifndef cpu_has_mips_5
 279 # define cpu_has_mips_5         __isa_lt_and_flag(6, MIPS_CPU_ISA_V)
 280 #endif
 281 #ifndef cpu_has_mips32r1
 282 # define cpu_has_mips32r1       __isa_range_or_flag(1, 6, MIPS_CPU_ISA_M32R1)
 283 #endif
 284 #ifndef cpu_has_mips32r2
 285 # define cpu_has_mips32r2       __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M32R2)
 286 #endif
 287 #ifndef cpu_has_mips32r6
 288 # define cpu_has_mips32r6       __isa_ge_or_flag(6, MIPS_CPU_ISA_M32R6)
 289 #endif
 290 #ifndef cpu_has_mips64r1
 291 # define cpu_has_mips64r1       __isa_range_or_flag(1, 6, MIPS_CPU_ISA_M64R1)
 292 #endif
 293 #ifndef cpu_has_mips64r2
 294 # define cpu_has_mips64r2       __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M64R2)
 295 #endif
 296 #ifndef cpu_has_mips64r6
 297 # define cpu_has_mips64r6       __isa_ge_and_flag(6, MIPS_CPU_ISA_M64R6)
 298 #endif
 299
 300 /*
 301  * Shortcuts ...
 302  */
 303 #define cpu_has_mips_2_3_4_5    (cpu_has_mips_2 | cpu_has_mips_3_4_5)
 304 #define cpu_has_mips_3_4_5      (cpu_has_mips_3 | cpu_has_mips_4_5)
 305 #define cpu_has_mips_4_5        (cpu_has_mips_4 | cpu_has_mips_5)
 306
 307 #define cpu_has_mips_2_3_4_5_r  (cpu_has_mips_2 | cpu_has_mips_3_4_5_r)
 308 #define cpu_has_mips_3_4_5_r    (cpu_has_mips_3 | cpu_has_mips_4_5_r)
 309 #define cpu_has_mips_4_5_r      (cpu_has_mips_4 | cpu_has_mips_5_r)
 310 #define cpu_has_mips_5_r        (cpu_has_mips_5 | cpu_has_mips_r)
 311
 312 #define cpu_has_mips_3_4_5_64_r2_r6                                     \
 313                                 (cpu_has_mips_3 | cpu_has_mips_4_5_64_r2_r6)
 314 #define cpu_has_mips_4_5_64_r2_r6                                       \
 315                                 (cpu_has_mips_4_5 | cpu_has_mips64r1 |  \
 316                                  cpu_has_mips_r2 | cpu_has_mips_r6)
 317
 318 #define cpu_has_mips32  (cpu_has_mips32r1 | cpu_has_mips32r2 | cpu_has_mips32r6)
 319 #define cpu_has_mips64  (cpu_has_mips64r1 | cpu_has_mips64r2 | cpu_has_mips64r6)
 320 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
 321 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
 322 #define cpu_has_mips_r6 (cpu_has_mips32r6 | cpu_has_mips64r6)
 323 #define cpu_has_mips_r  (cpu_has_mips32r1 | cpu_has_mips32r2 | \
 324                          cpu_has_mips32r6 | cpu_has_mips64r1 | \
 325                          cpu_has_mips64r2 | cpu_has_mips64r6)
 326
 327 /* MIPSR2 and MIPSR6 have a lot of similarities */
 328 #define cpu_has_mips_r2_r6      (cpu_has_mips_r2 | cpu_has_mips_r6)
 329
 330 /*
 331  * cpu_has_mips_r2_exec_hazard - return if IHB is required on current processor
 332  *
 333  * Returns non-zero value if the current processor implementation requires
 334  * an IHB instruction to deal with an instruction hazard as per MIPS R2
 335  * architecture specification, zero otherwise.
 336  */
 337 #ifndef cpu_has_mips_r2_exec_hazard
 338 #define cpu_has_mips_r2_exec_hazard                                     \
 339 ({                                                                      \
 340         int __res;                                                      \
 341                                                                         \
 342         switch (current_cpu_type()) {                                   \
 343         case CPU_M14KC:                                                 \
 344         case CPU_74K:                                                   \
 345         case CPU_1074K:                                                 \
 346         case CPU_PROAPTIV:                                              \
 347         case CPU_P5600:                                                 \
 348         case CPU_M5150:                                                 \
 349         case CPU_QEMU_GENERIC:                                          \
 350         case CPU_CAVIUM_OCTEON:                                         \
 351         case CPU_CAVIUM_OCTEON_PLUS:                                    \
 352         case CPU_CAVIUM_OCTEON2:                                        \
 353         case CPU_CAVIUM_OCTEON3:                                        \
 354                 __res = 0;                                              \
 355                 break;                                                  \
 356                                                                         \
 357         default:                                                        \
 358                 __res = 1;                                              \
 359         }                                                               \
 360                                                                         \
 361         __res;                                                          \
 362 })
 363 #endif
 364
 365 /*
 366  * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
 367  * pre-MIPS32/MIPS64 processors have CLO, CLZ.  The IDT RC64574 is 64-bit and
 368  * has CLO and CLZ but not DCLO nor DCLZ.  For 64-bit kernels
 369  * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
 370  */
 371 #ifndef cpu_has_clo_clz
 372 #define cpu_has_clo_clz cpu_has_mips_r
 373 #endif
 374
 375 /*
 376  * MIPS32 R2, MIPS64 R2, Loongson 3A and Octeon have WSBH.
 377  * MIPS64 R2, Loongson 3A and Octeon have WSBH, DSBH and DSHD.
 378  * This indicates the availability of WSBH and in case of 64 bit CPUs also
 379  * DSBH and DSHD.
 380  */
 381 #ifndef cpu_has_wsbh
 382 #define cpu_has_wsbh            cpu_has_mips_r2
 383 #endif
 384
 385 #ifndef cpu_has_dsp
 386 #define cpu_has_dsp             __ase(MIPS_ASE_DSP)
 387 #endif
 388
 389 #ifndef cpu_has_dsp2
 390 #define cpu_has_dsp2            __ase(MIPS_ASE_DSP2P)
 391 #endif
 392
 393 #ifndef cpu_has_dsp3
 394 #define cpu_has_dsp3            __ase(MIPS_ASE_DSP3)
 395 #endif
 396
 397 #ifndef cpu_has_loongson_mmi
 398 #define cpu_has_loongson_mmi            __ase(MIPS_ASE_LOONGSON_MMI)
 399 #endif
 400
 401 #ifndef cpu_has_loongson_cam
 402 #define cpu_has_loongson_cam            __ase(MIPS_ASE_LOONGSON_CAM)
 403 #endif
 404
 405 #ifndef cpu_has_loongson_ext
 406 #define cpu_has_loongson_ext            __ase(MIPS_ASE_LOONGSON_EXT)
 407 #endif
 408
 409 #ifndef cpu_has_loongson_ext2
 410 #define cpu_has_loongson_ext2           __ase(MIPS_ASE_LOONGSON_EXT2)
 411 #endif
 412
 413 #ifndef cpu_has_mipsmt
 414 #define cpu_has_mipsmt          __isa_lt_and_ase(6, MIPS_ASE_MIPSMT)
 415 #endif
 416
 417 #ifndef cpu_has_vp
 418 #define cpu_has_vp              __isa_ge_and_opt(6, MIPS_CPU_VP)
 419 #endif
 420
 421 #ifndef cpu_has_userlocal
 422 #define cpu_has_userlocal       __isa_ge_or_opt(6, MIPS_CPU_ULRI)
 423 #endif
 424
 425 #ifdef CONFIG_32BIT
 426 # ifndef cpu_has_nofpuex
 427 # define cpu_has_nofpuex        __isa_lt_and_opt(1, MIPS_CPU_NOFPUEX)
 428 # endif
 429 # ifndef cpu_has_64bits
 430 # define cpu_has_64bits         (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 431 # endif
 432 # ifndef cpu_has_64bit_zero_reg
 433 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 434 # endif
 435 # ifndef cpu_has_64bit_gp_regs
 436 # define cpu_has_64bit_gp_regs          0
 437 # endif
 438 # ifndef cpu_has_64bit_addresses
 439 # define cpu_has_64bit_addresses        0
 440 # endif
 441 # ifndef cpu_vmbits
 442 # define cpu_vmbits 31
 443 # endif
 444 #endif
 445
 446 #ifdef CONFIG_64BIT
 447 # ifndef cpu_has_nofpuex
 448 # define cpu_has_nofpuex                0
 449 # endif
 450 # ifndef cpu_has_64bits
 451 # define cpu_has_64bits                 1
 452 # endif
 453 # ifndef cpu_has_64bit_zero_reg
 454 # define cpu_has_64bit_zero_reg         1
 455 # endif
 456 # ifndef cpu_has_64bit_gp_regs
 457 # define cpu_has_64bit_gp_regs          1
 458 # endif
 459 # ifndef cpu_has_64bit_addresses
 460 # define cpu_has_64bit_addresses        1
 461 # endif
 462 # ifndef cpu_vmbits
 463 # define cpu_vmbits cpu_data[0].vmbits
 464 # define __NEED_VMBITS_PROBE
 465 # endif
 466 #endif
 467
 468 #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
 469 # define cpu_has_vint           __opt(MIPS_CPU_VINT)
 470 #elif !defined(cpu_has_vint)
 471 # define cpu_has_vint                   0
 472 #endif
 473
 474 #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
 475 # define cpu_has_veic           __opt(MIPS_CPU_VEIC)
 476 #elif !defined(cpu_has_veic)
 477 # define cpu_has_veic                   0
 478 #endif
 479
 480 #ifndef cpu_has_inclusive_pcaches
 481 #define cpu_has_inclusive_pcaches       __opt(MIPS_CPU_INCLUSIVE_CACHES)
 482 #endif
 483
 484 #ifndef cpu_dcache_line_size
 485 #define cpu_dcache_line_size()  cpu_data[0].dcache.linesz
 486 #endif
 487 #ifndef cpu_icache_line_size
 488 #define cpu_icache_line_size()  cpu_data[0].icache.linesz
 489 #endif
 490 #ifndef cpu_scache_line_size
 491 #define cpu_scache_line_size()  cpu_data[0].scache.linesz
 492 #endif
 493 #ifndef cpu_tcache_line_size
 494 #define cpu_tcache_line_size()  cpu_data[0].tcache.linesz
 495 #endif
 496
 497 #ifndef cpu_hwrena_impl_bits
 498 #define cpu_hwrena_impl_bits            0
 499 #endif
 500
 501 #ifndef cpu_has_perf_cntr_intr_bit
 502 #define cpu_has_perf_cntr_intr_bit      __opt(MIPS_CPU_PCI)
 503 #endif
 504
 505 #ifndef cpu_has_vz
 506 #define cpu_has_vz              __ase(MIPS_ASE_VZ)
 507 #endif
 508
 509 #if defined(CONFIG_CPU_HAS_MSA) && !defined(cpu_has_msa)
 510 # define cpu_has_msa            __ase(MIPS_ASE_MSA)
 511 #elif !defined(cpu_has_msa)
 512 # define cpu_has_msa            0
 513 #endif
 514
 515 #ifndef cpu_has_ufr
 516 # define cpu_has_ufr            __opt(MIPS_CPU_UFR)
 517 #endif
 518
 519 #ifndef cpu_has_fre
 520 # define cpu_has_fre            __opt(MIPS_CPU_FRE)
 521 #endif
 522
 523 #ifndef cpu_has_cdmm
 524 # define cpu_has_cdmm           __opt(MIPS_CPU_CDMM)
 525 #endif
 526
 527 #ifndef cpu_has_small_pages
 528 # define cpu_has_small_pages    __opt(MIPS_CPU_SP)
 529 #endif
 530
 531 #ifndef cpu_has_nan_legacy
 532 #define cpu_has_nan_legacy      __isa_lt_and_opt(6, MIPS_CPU_NAN_LEGACY)
 533 #endif
 534 #ifndef cpu_has_nan_2008
 535 #define cpu_has_nan_2008        __isa_ge_or_opt(6, MIPS_CPU_NAN_2008)
 536 #endif
 537
 538 #ifndef cpu_has_ebase_wg
 539 # define cpu_has_ebase_wg       __opt(MIPS_CPU_EBASE_WG)
 540 #endif
 541
 542 #ifndef cpu_has_badinstr
 543 # define cpu_has_badinstr       __isa_ge_or_opt(6, MIPS_CPU_BADINSTR)
 544 #endif
 545
 546 #ifndef cpu_has_badinstrp
 547 # define cpu_has_badinstrp      __isa_ge_or_opt(6, MIPS_CPU_BADINSTRP)
 548 #endif
 549
 550 #ifndef cpu_has_contextconfig
 551 # define cpu_has_contextconfig  __opt(MIPS_CPU_CTXTC)
 552 #endif
 553
 554 #ifndef cpu_has_perf
 555 # define cpu_has_perf           __opt(MIPS_CPU_PERF)
 556 #endif
 557
 558 #ifndef cpu_has_mac2008_only
 559 # define cpu_has_mac2008_only   __opt(MIPS_CPU_MAC_2008_ONLY)
 560 #endif
 561
 562 #ifdef CONFIG_SMP
 563 /*
 564  * Some systems share FTLB RAMs between threads within a core (siblings in
 565  * kernel parlance). This means that FTLB entries may become invalid at almost
 566  * any point when an entry is evicted due to a sibling thread writing an entry
 567  * to the shared FTLB RAM.
 568  *
 569  * This is only relevant to SMP systems, and the only systems that exhibit this
 570  * property implement MIPSr6 or higher so we constrain support for this to
 571  * kernels that will run on such systems.
 572  */
 573 # ifndef cpu_has_shared_ftlb_ram
 574 #  define cpu_has_shared_ftlb_ram \
 575         __isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_RAM)
 576 # endif
 577
 578 /*
 579  * Some systems take this a step further & share FTLB entries between siblings.
 580  * This is implemented as TLB writes happening as usual, but if an entry
 581  * written by a sibling exists in the shared FTLB for a translation which would
 582  * otherwise cause a TLB refill exception then the CPU will use the entry
 583  * written by its sibling rather than triggering a refill & writing a matching
 584  * TLB entry for itself.
 585  *
 586  * This is naturally only valid if a TLB entry is known to be suitable for use
 587  * on all siblings in a CPU, and so it only takes effect when MMIDs are in use
 588  * rather than ASIDs or when a TLB entry is marked global.
 589  */
 590 # ifndef cpu_has_shared_ftlb_entries
 591 #  define cpu_has_shared_ftlb_entries \
 592         __isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_ENTRIES)
 593 # endif
 594 #endif /* SMP */
 595
 596 #ifndef cpu_has_shared_ftlb_ram
 597 # define cpu_has_shared_ftlb_ram 0
 598 #endif
 599 #ifndef cpu_has_shared_ftlb_entries
 600 # define cpu_has_shared_ftlb_entries 0
 601 #endif
 602
 603 #ifdef CONFIG_MIPS_MT_SMP
 604 # define cpu_has_mipsmt_pertccounters \
 605         __isa_lt_and_opt(6, MIPS_CPU_MT_PER_TC_PERF_COUNTERS)
 606 #else
 607 # define cpu_has_mipsmt_pertccounters 0
 608 #endif /* CONFIG_MIPS_MT_SMP */
 609
 610 /*
 611  * We only enable MMID support for configurations which natively support 64 bit
 612  * atomics because getting good performance from the allocator relies upon
 613  * efficient atomic64_*() functions.
 614  */
 615 #ifndef cpu_has_mmid
 616 # ifdef CONFIG_GENERIC_ATOMIC64
 617 #  define cpu_has_mmid          0
 618 # else
 619 #  define cpu_has_mmid          __isa_ge_and_opt(6, MIPS_CPU_MMID)
 620 # endif
 621 #endif
 622
 623 /*
 624  * Guest capabilities
 625  */
 626 #ifndef cpu_guest_has_conf1
 627 #define cpu_guest_has_conf1     (cpu_data[0].guest.conf & (1 << 1))
 628 #endif
 629 #ifndef cpu_guest_has_conf2
 630 #define cpu_guest_has_conf2     (cpu_data[0].guest.conf & (1 << 2))
 631 #endif
 632 #ifndef cpu_guest_has_conf3
 633 #define cpu_guest_has_conf3     (cpu_data[0].guest.conf & (1 << 3))
 634 #endif
 635 #ifndef cpu_guest_has_conf4
 636 #define cpu_guest_has_conf4     (cpu_data[0].guest.conf & (1 << 4))
 637 #endif
 638 #ifndef cpu_guest_has_conf5
 639 #define cpu_guest_has_conf5     (cpu_data[0].guest.conf & (1 << 5))
 640 #endif
 641 #ifndef cpu_guest_has_conf6
 642 #define cpu_guest_has_conf6     (cpu_data[0].guest.conf & (1 << 6))
 643 #endif
 644 #ifndef cpu_guest_has_conf7
 645 #define cpu_guest_has_conf7     (cpu_data[0].guest.conf & (1 << 7))
 646 #endif
 647 #ifndef cpu_guest_has_fpu
 648 #define cpu_guest_has_fpu       (cpu_data[0].guest.options & MIPS_CPU_FPU)
 649 #endif
 650 #ifndef cpu_guest_has_watch
 651 #define cpu_guest_has_watch     (cpu_data[0].guest.options & MIPS_CPU_WATCH)
 652 #endif
 653 #ifndef cpu_guest_has_contextconfig
 654 #define cpu_guest_has_contextconfig (cpu_data[0].guest.options & MIPS_CPU_CTXTC)
 655 #endif
 656 #ifndef cpu_guest_has_segments
 657 #define cpu_guest_has_segments  (cpu_data[0].guest.options & MIPS_CPU_SEGMENTS)
 658 #endif
 659 #ifndef cpu_guest_has_badinstr
 660 #define cpu_guest_has_badinstr  (cpu_data[0].guest.options & MIPS_CPU_BADINSTR)
 661 #endif
 662 #ifndef cpu_guest_has_badinstrp
 663 #define cpu_guest_has_badinstrp (cpu_data[0].guest.options & MIPS_CPU_BADINSTRP)
 664 #endif
 665 #ifndef cpu_guest_has_htw
 666 #define cpu_guest_has_htw       (cpu_data[0].guest.options & MIPS_CPU_HTW)
 667 #endif
 668 #ifndef cpu_guest_has_mvh
 669 #define cpu_guest_has_mvh       (cpu_data[0].guest.options & MIPS_CPU_MVH)
 670 #endif
 671 #ifndef cpu_guest_has_msa
 672 #define cpu_guest_has_msa       (cpu_data[0].guest.ases & MIPS_ASE_MSA)
 673 #endif
 674 #ifndef cpu_guest_has_kscr
 675 #define cpu_guest_has_kscr(n)   (cpu_data[0].guest.kscratch_mask & (1u << (n)))
 676 #endif
 677 #ifndef cpu_guest_has_rw_llb
 678 #define cpu_guest_has_rw_llb    (cpu_has_mips_r6 || (cpu_data[0].guest.options & MIPS_CPU_RW_LLB))
 679 #endif
 680 #ifndef cpu_guest_has_perf
 681 #define cpu_guest_has_perf      (cpu_data[0].guest.options & MIPS_CPU_PERF)
 682 #endif
 683 #ifndef cpu_guest_has_maar
 684 #define cpu_guest_has_maar      (cpu_data[0].guest.options & MIPS_CPU_MAAR)
 685 #endif
 686 #ifndef cpu_guest_has_userlocal
 687 #define cpu_guest_has_userlocal (cpu_data[0].guest.options & MIPS_CPU_ULRI)
 688 #endif
 689
 690 /*
 691  * Guest dynamic capabilities
 692  */
 693 #ifndef cpu_guest_has_dyn_fpu
 694 #define cpu_guest_has_dyn_fpu   (cpu_data[0].guest.options_dyn & MIPS_CPU_FPU)
 695 #endif
 696 #ifndef cpu_guest_has_dyn_watch
 697 #define cpu_guest_has_dyn_watch (cpu_data[0].guest.options_dyn & MIPS_CPU_WATCH)
 698 #endif
 699 #ifndef cpu_guest_has_dyn_contextconfig
 700 #define cpu_guest_has_dyn_contextconfig (cpu_data[0].guest.options_dyn & MIPS_CPU_CTXTC)
 701 #endif
 702 #ifndef cpu_guest_has_dyn_perf
 703 #define cpu_guest_has_dyn_perf  (cpu_data[0].guest.options_dyn & MIPS_CPU_PERF)
 704 #endif
 705 #ifndef cpu_guest_has_dyn_msa
 706 #define cpu_guest_has_dyn_msa   (cpu_data[0].guest.ases_dyn & MIPS_ASE_MSA)
 707 #endif
 708 #ifndef cpu_guest_has_dyn_maar
 709 #define cpu_guest_has_dyn_maar  (cpu_data[0].guest.options_dyn & MIPS_CPU_MAAR)
 710 #endif
 711
 712 #endif /* __ASM_CPU_FEATURES_H */