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 #ifndef cpu_has_local_ebase 247 #define cpu_has_local_ebase 1 248 #endif 249 250 /* 251 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors 252 * such as the R10000 have I-Caches that snoop local stores; the embedded ones 253 * don't. For maintaining I-cache coherency this means we need to flush the 254 * D-cache all the way back to whever the I-cache does refills from, so the 255 * I-cache has a chance to see the new data at all. Then we have to flush the 256 * I-cache also. 257 * Note we may have been rescheduled and may no longer be running on the CPU 258 * that did the store so we can't optimize this into only doing the flush on 259 * the local CPU. 260 */ 261 #ifndef cpu_icache_snoops_remote_store 262 #ifdef CONFIG_SMP 263 #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE) 264 #else 265 #define cpu_icache_snoops_remote_store 1 266 #endif 267 #endif 268 269 #ifndef cpu_has_mips_1 270 # define cpu_has_mips_1 (MIPS_ISA_REV < 6) 271 #endif 272 #ifndef cpu_has_mips_2 273 # define cpu_has_mips_2 __isa_lt_and_flag(6, MIPS_CPU_ISA_II) 274 #endif 275 #ifndef cpu_has_mips_3 276 # define cpu_has_mips_3 __isa_lt_and_flag(6, MIPS_CPU_ISA_III) 277 #endif 278 #ifndef cpu_has_mips_4 279 # define cpu_has_mips_4 __isa_lt_and_flag(6, MIPS_CPU_ISA_IV) 280 #endif 281 #ifndef cpu_has_mips_5 282 # define cpu_has_mips_5 __isa_lt_and_flag(6, MIPS_CPU_ISA_V) 283 #endif 284 #ifndef cpu_has_mips32r1 285 # define cpu_has_mips32r1 __isa_range_or_flag(1, 6, MIPS_CPU_ISA_M32R1) 286 #endif 287 #ifndef cpu_has_mips32r2 288 # define cpu_has_mips32r2 __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M32R2) 289 #endif 290 #ifndef cpu_has_mips32r6 291 # define cpu_has_mips32r6 __isa_ge_or_flag(6, MIPS_CPU_ISA_M32R6) 292 #endif 293 #ifndef cpu_has_mips64r1 294 # define cpu_has_mips64r1 __isa_range_or_flag(1, 6, MIPS_CPU_ISA_M64R1) 295 #endif 296 #ifndef cpu_has_mips64r2 297 # define cpu_has_mips64r2 __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M64R2) 298 #endif 299 #ifndef cpu_has_mips64r6 300 # define cpu_has_mips64r6 __isa_ge_and_flag(6, MIPS_CPU_ISA_M64R6) 301 #endif 302 303 /* 304 * Shortcuts ... 305 */ 306 #define cpu_has_mips_2_3_4_5 (cpu_has_mips_2 | cpu_has_mips_3_4_5) 307 #define cpu_has_mips_3_4_5 (cpu_has_mips_3 | cpu_has_mips_4_5) 308 #define cpu_has_mips_4_5 (cpu_has_mips_4 | cpu_has_mips_5) 309 310 #define cpu_has_mips_2_3_4_5_r (cpu_has_mips_2 | cpu_has_mips_3_4_5_r) 311 #define cpu_has_mips_3_4_5_r (cpu_has_mips_3 | cpu_has_mips_4_5_r) 312 #define cpu_has_mips_4_5_r (cpu_has_mips_4 | cpu_has_mips_5_r) 313 #define cpu_has_mips_5_r (cpu_has_mips_5 | cpu_has_mips_r) 314 315 #define cpu_has_mips_3_4_5_64_r2_r6 \ 316 (cpu_has_mips_3 | cpu_has_mips_4_5_64_r2_r6) 317 #define cpu_has_mips_4_5_64_r2_r6 \ 318 (cpu_has_mips_4_5 | cpu_has_mips64r1 | \ 319 cpu_has_mips_r2 | cpu_has_mips_r6) 320 321 #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2 | cpu_has_mips32r6) 322 #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2 | cpu_has_mips64r6) 323 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1) 324 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2) 325 #define cpu_has_mips_r6 (cpu_has_mips32r6 | cpu_has_mips64r6) 326 #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \ 327 cpu_has_mips32r6 | cpu_has_mips64r1 | \ 328 cpu_has_mips64r2 | cpu_has_mips64r6) 329 330 /* MIPSR2 and MIPSR6 have a lot of similarities */ 331 #define cpu_has_mips_r2_r6 (cpu_has_mips_r2 | cpu_has_mips_r6) 332 333 /* 334 * cpu_has_mips_r2_exec_hazard - return if IHB is required on current processor 335 * 336 * Returns non-zero value if the current processor implementation requires 337 * an IHB instruction to deal with an instruction hazard as per MIPS R2 338 * architecture specification, zero otherwise. 339 */ 340 #ifndef cpu_has_mips_r2_exec_hazard 341 #define cpu_has_mips_r2_exec_hazard \ 342 ({ \ 343 int __res; \ 344 \ 345 switch (current_cpu_type()) { \ 346 case CPU_M14KC: \ 347 case CPU_74K: \ 348 case CPU_1074K: \ 349 case CPU_PROAPTIV: \ 350 case CPU_P5600: \ 351 case CPU_M5150: \ 352 case CPU_QEMU_GENERIC: \ 353 case CPU_CAVIUM_OCTEON: \ 354 case CPU_CAVIUM_OCTEON_PLUS: \ 355 case CPU_CAVIUM_OCTEON2: \ 356 case CPU_CAVIUM_OCTEON3: \ 357 __res = 0; \ 358 break; \ 359 \ 360 default: \ 361 __res = 1; \ 362 } \ 363 \ 364 __res; \ 365 }) 366 #endif 367 368 /* 369 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other 370 * pre-MIPS32/MIPS64 processors have CLO, CLZ. The IDT RC64574 is 64-bit and 371 * has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels 372 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ. 373 */ 374 #ifndef cpu_has_clo_clz 375 #define cpu_has_clo_clz cpu_has_mips_r 376 #endif 377 378 /* 379 * MIPS32 R2, MIPS64 R2, Loongson 3A and Octeon have WSBH. 380 * MIPS64 R2, Loongson 3A and Octeon have WSBH, DSBH and DSHD. 381 * This indicates the availability of WSBH and in case of 64 bit CPUs also 382 * DSBH and DSHD. 383 */ 384 #ifndef cpu_has_wsbh 385 #define cpu_has_wsbh cpu_has_mips_r2 386 #endif 387 388 #ifndef cpu_has_dsp 389 #define cpu_has_dsp __ase(MIPS_ASE_DSP) 390 #endif 391 392 #ifndef cpu_has_dsp2 393 #define cpu_has_dsp2 __ase(MIPS_ASE_DSP2P) 394 #endif 395 396 #ifndef cpu_has_dsp3 397 #define cpu_has_dsp3 __ase(MIPS_ASE_DSP3) 398 #endif 399 400 #ifndef cpu_has_mipsmt 401 #define cpu_has_mipsmt __isa_lt_and_ase(6, MIPS_ASE_MIPSMT) 402 #endif 403 404 #ifndef cpu_has_vp 405 #define cpu_has_vp __isa_ge_and_opt(6, MIPS_CPU_VP) 406 #endif 407 408 #ifndef cpu_has_userlocal 409 #define cpu_has_userlocal __isa_ge_or_opt(6, MIPS_CPU_ULRI) 410 #endif 411 412 #ifdef CONFIG_32BIT 413 # ifndef cpu_has_nofpuex 414 # define cpu_has_nofpuex __isa_lt_and_opt(1, MIPS_CPU_NOFPUEX) 415 # endif 416 # ifndef cpu_has_64bits 417 # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) 418 # endif 419 # ifndef cpu_has_64bit_zero_reg 420 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) 421 # endif 422 # ifndef cpu_has_64bit_gp_regs 423 # define cpu_has_64bit_gp_regs 0 424 # endif 425 # ifndef cpu_has_64bit_addresses 426 # define cpu_has_64bit_addresses 0 427 # endif 428 # ifndef cpu_vmbits 429 # define cpu_vmbits 31 430 # endif 431 #endif 432 433 #ifdef CONFIG_64BIT 434 # ifndef cpu_has_nofpuex 435 # define cpu_has_nofpuex 0 436 # endif 437 # ifndef cpu_has_64bits 438 # define cpu_has_64bits 1 439 # endif 440 # ifndef cpu_has_64bit_zero_reg 441 # define cpu_has_64bit_zero_reg 1 442 # endif 443 # ifndef cpu_has_64bit_gp_regs 444 # define cpu_has_64bit_gp_regs 1 445 # endif 446 # ifndef cpu_has_64bit_addresses 447 # define cpu_has_64bit_addresses 1 448 # endif 449 # ifndef cpu_vmbits 450 # define cpu_vmbits cpu_data[0].vmbits 451 # define __NEED_VMBITS_PROBE 452 # endif 453 #endif 454 455 #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint) 456 # define cpu_has_vint __opt(MIPS_CPU_VINT) 457 #elif !defined(cpu_has_vint) 458 # define cpu_has_vint 0 459 #endif 460 461 #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic) 462 # define cpu_has_veic __opt(MIPS_CPU_VEIC) 463 #elif !defined(cpu_has_veic) 464 # define cpu_has_veic 0 465 #endif 466 467 #ifndef cpu_has_inclusive_pcaches 468 #define cpu_has_inclusive_pcaches __opt(MIPS_CPU_INCLUSIVE_CACHES) 469 #endif 470 471 #ifndef cpu_dcache_line_size 472 #define cpu_dcache_line_size() cpu_data[0].dcache.linesz 473 #endif 474 #ifndef cpu_icache_line_size 475 #define cpu_icache_line_size() cpu_data[0].icache.linesz 476 #endif 477 #ifndef cpu_scache_line_size 478 #define cpu_scache_line_size() cpu_data[0].scache.linesz 479 #endif 480 #ifndef cpu_tcache_line_size 481 #define cpu_tcache_line_size() cpu_data[0].tcache.linesz 482 #endif 483 484 #ifndef cpu_hwrena_impl_bits 485 #define cpu_hwrena_impl_bits 0 486 #endif 487 488 #ifndef cpu_has_perf_cntr_intr_bit 489 #define cpu_has_perf_cntr_intr_bit __opt(MIPS_CPU_PCI) 490 #endif 491 492 #ifndef cpu_has_vz 493 #define cpu_has_vz __ase(MIPS_ASE_VZ) 494 #endif 495 496 #if defined(CONFIG_CPU_HAS_MSA) && !defined(cpu_has_msa) 497 # define cpu_has_msa __ase(MIPS_ASE_MSA) 498 #elif !defined(cpu_has_msa) 499 # define cpu_has_msa 0 500 #endif 501 502 #ifndef cpu_has_ufr 503 # define cpu_has_ufr __opt(MIPS_CPU_UFR) 504 #endif 505 506 #ifndef cpu_has_fre 507 # define cpu_has_fre __opt(MIPS_CPU_FRE) 508 #endif 509 510 #ifndef cpu_has_cdmm 511 # define cpu_has_cdmm __opt(MIPS_CPU_CDMM) 512 #endif 513 514 #ifndef cpu_has_small_pages 515 # define cpu_has_small_pages __opt(MIPS_CPU_SP) 516 #endif 517 518 #ifndef cpu_has_nan_legacy 519 #define cpu_has_nan_legacy __isa_lt_and_opt(6, MIPS_CPU_NAN_LEGACY) 520 #endif 521 #ifndef cpu_has_nan_2008 522 #define cpu_has_nan_2008 __isa_ge_or_opt(6, MIPS_CPU_NAN_2008) 523 #endif 524 525 #ifndef cpu_has_ebase_wg 526 # define cpu_has_ebase_wg __opt(MIPS_CPU_EBASE_WG) 527 #endif 528 529 #ifndef cpu_has_badinstr 530 # define cpu_has_badinstr __isa_ge_or_opt(6, MIPS_CPU_BADINSTR) 531 #endif 532 533 #ifndef cpu_has_badinstrp 534 # define cpu_has_badinstrp __isa_ge_or_opt(6, MIPS_CPU_BADINSTRP) 535 #endif 536 537 #ifndef cpu_has_contextconfig 538 # define cpu_has_contextconfig __opt(MIPS_CPU_CTXTC) 539 #endif 540 541 #ifndef cpu_has_perf 542 # define cpu_has_perf __opt(MIPS_CPU_PERF) 543 #endif 544 545 #ifdef CONFIG_SMP 546 /* 547 * Some systems share FTLB RAMs between threads within a core (siblings in 548 * kernel parlance). This means that FTLB entries may become invalid at almost 549 * any point when an entry is evicted due to a sibling thread writing an entry 550 * to the shared FTLB RAM. 551 * 552 * This is only relevant to SMP systems, and the only systems that exhibit this 553 * property implement MIPSr6 or higher so we constrain support for this to 554 * kernels that will run on such systems. 555 */ 556 # ifndef cpu_has_shared_ftlb_ram 557 # define cpu_has_shared_ftlb_ram \ 558 __isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_RAM) 559 # endif 560 561 /* 562 * Some systems take this a step further & share FTLB entries between siblings. 563 * This is implemented as TLB writes happening as usual, but if an entry 564 * written by a sibling exists in the shared FTLB for a translation which would 565 * otherwise cause a TLB refill exception then the CPU will use the entry 566 * written by its sibling rather than triggering a refill & writing a matching 567 * TLB entry for itself. 568 * 569 * This is naturally only valid if a TLB entry is known to be suitable for use 570 * on all siblings in a CPU, and so it only takes effect when MMIDs are in use 571 * rather than ASIDs or when a TLB entry is marked global. 572 */ 573 # ifndef cpu_has_shared_ftlb_entries 574 # define cpu_has_shared_ftlb_entries \ 575 __isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_ENTRIES) 576 # endif 577 #endif /* SMP */ 578 579 #ifndef cpu_has_shared_ftlb_ram 580 # define cpu_has_shared_ftlb_ram 0 581 #endif 582 #ifndef cpu_has_shared_ftlb_entries 583 # define cpu_has_shared_ftlb_entries 0 584 #endif 585 586 #ifdef CONFIG_MIPS_MT_SMP 587 # define cpu_has_mipsmt_pertccounters \ 588 __isa_lt_and_opt(6, MIPS_CPU_MT_PER_TC_PERF_COUNTERS) 589 #else 590 # define cpu_has_mipsmt_pertccounters 0 591 #endif /* CONFIG_MIPS_MT_SMP */ 592 593 /* 594 * We only enable MMID support for configurations which natively support 64 bit 595 * atomics because getting good performance from the allocator relies upon 596 * efficient atomic64_*() functions. 597 */ 598 #ifndef cpu_has_mmid 599 # ifdef CONFIG_GENERIC_ATOMIC64 600 # define cpu_has_mmid 0 601 # else 602 # define cpu_has_mmid __isa_ge_and_opt(6, MIPS_CPU_MMID) 603 # endif 604 #endif 605 606 /* 607 * Guest capabilities 608 */ 609 #ifndef cpu_guest_has_conf1 610 #define cpu_guest_has_conf1 (cpu_data[0].guest.conf & (1 << 1)) 611 #endif 612 #ifndef cpu_guest_has_conf2 613 #define cpu_guest_has_conf2 (cpu_data[0].guest.conf & (1 << 2)) 614 #endif 615 #ifndef cpu_guest_has_conf3 616 #define cpu_guest_has_conf3 (cpu_data[0].guest.conf & (1 << 3)) 617 #endif 618 #ifndef cpu_guest_has_conf4 619 #define cpu_guest_has_conf4 (cpu_data[0].guest.conf & (1 << 4)) 620 #endif 621 #ifndef cpu_guest_has_conf5 622 #define cpu_guest_has_conf5 (cpu_data[0].guest.conf & (1 << 5)) 623 #endif 624 #ifndef cpu_guest_has_conf6 625 #define cpu_guest_has_conf6 (cpu_data[0].guest.conf & (1 << 6)) 626 #endif 627 #ifndef cpu_guest_has_conf7 628 #define cpu_guest_has_conf7 (cpu_data[0].guest.conf & (1 << 7)) 629 #endif 630 #ifndef cpu_guest_has_fpu 631 #define cpu_guest_has_fpu (cpu_data[0].guest.options & MIPS_CPU_FPU) 632 #endif 633 #ifndef cpu_guest_has_watch 634 #define cpu_guest_has_watch (cpu_data[0].guest.options & MIPS_CPU_WATCH) 635 #endif 636 #ifndef cpu_guest_has_contextconfig 637 #define cpu_guest_has_contextconfig (cpu_data[0].guest.options & MIPS_CPU_CTXTC) 638 #endif 639 #ifndef cpu_guest_has_segments 640 #define cpu_guest_has_segments (cpu_data[0].guest.options & MIPS_CPU_SEGMENTS) 641 #endif 642 #ifndef cpu_guest_has_badinstr 643 #define cpu_guest_has_badinstr (cpu_data[0].guest.options & MIPS_CPU_BADINSTR) 644 #endif 645 #ifndef cpu_guest_has_badinstrp 646 #define cpu_guest_has_badinstrp (cpu_data[0].guest.options & MIPS_CPU_BADINSTRP) 647 #endif 648 #ifndef cpu_guest_has_htw 649 #define cpu_guest_has_htw (cpu_data[0].guest.options & MIPS_CPU_HTW) 650 #endif 651 #ifndef cpu_guest_has_mvh 652 #define cpu_guest_has_mvh (cpu_data[0].guest.options & MIPS_CPU_MVH) 653 #endif 654 #ifndef cpu_guest_has_msa 655 #define cpu_guest_has_msa (cpu_data[0].guest.ases & MIPS_ASE_MSA) 656 #endif 657 #ifndef cpu_guest_has_kscr 658 #define cpu_guest_has_kscr(n) (cpu_data[0].guest.kscratch_mask & (1u << (n))) 659 #endif 660 #ifndef cpu_guest_has_rw_llb 661 #define cpu_guest_has_rw_llb (cpu_has_mips_r6 || (cpu_data[0].guest.options & MIPS_CPU_RW_LLB)) 662 #endif 663 #ifndef cpu_guest_has_perf 664 #define cpu_guest_has_perf (cpu_data[0].guest.options & MIPS_CPU_PERF) 665 #endif 666 #ifndef cpu_guest_has_maar 667 #define cpu_guest_has_maar (cpu_data[0].guest.options & MIPS_CPU_MAAR) 668 #endif 669 #ifndef cpu_guest_has_userlocal 670 #define cpu_guest_has_userlocal (cpu_data[0].guest.options & MIPS_CPU_ULRI) 671 #endif 672 673 /* 674 * Guest dynamic capabilities 675 */ 676 #ifndef cpu_guest_has_dyn_fpu 677 #define cpu_guest_has_dyn_fpu (cpu_data[0].guest.options_dyn & MIPS_CPU_FPU) 678 #endif 679 #ifndef cpu_guest_has_dyn_watch 680 #define cpu_guest_has_dyn_watch (cpu_data[0].guest.options_dyn & MIPS_CPU_WATCH) 681 #endif 682 #ifndef cpu_guest_has_dyn_contextconfig 683 #define cpu_guest_has_dyn_contextconfig (cpu_data[0].guest.options_dyn & MIPS_CPU_CTXTC) 684 #endif 685 #ifndef cpu_guest_has_dyn_perf 686 #define cpu_guest_has_dyn_perf (cpu_data[0].guest.options_dyn & MIPS_CPU_PERF) 687 #endif 688 #ifndef cpu_guest_has_dyn_msa 689 #define cpu_guest_has_dyn_msa (cpu_data[0].guest.ases_dyn & MIPS_ASE_MSA) 690 #endif 691 #ifndef cpu_guest_has_dyn_maar 692 #define cpu_guest_has_dyn_maar (cpu_data[0].guest.options_dyn & MIPS_CPU_MAAR) 693 #endif 694 695 #endif /* __ASM_CPU_FEATURES_H */ 696