locore.h revision 1.107
1 /* $NetBSD: locore.h,v 1.107 2020/06/14 06:50:31 simonb Exp $ */ 2 3 /* 4 * This file should not be included by MI code!!! 5 */ 6 7 /* 8 * Copyright 1996 The Board of Trustees of The Leland Stanford 9 * Junior University. All Rights Reserved. 10 * 11 * Permission to use, copy, modify, and distribute this 12 * software and its documentation for any purpose and without 13 * fee is hereby granted, provided that the above copyright 14 * notice appear in all copies. Stanford University 15 * makes no representations about the suitability of this 16 * software for any purpose. It is provided "as is" without 17 * express or implied warranty. 18 */ 19 20 /* 21 * Jump table for MIPS CPU locore functions that are implemented 22 * differently on different generations, or instruction-level 23 * architecture (ISA) level, the Mips family. 24 * 25 * We currently provide support for MIPS I and MIPS III. 26 */ 27 28 #ifndef _MIPS_LOCORE_H 29 #define _MIPS_LOCORE_H 30 31 #if !defined(_LKM) && defined(_KERNEL_OPT) 32 #include "opt_cputype.h" 33 #endif 34 35 #ifndef __ASSEMBLER__ 36 37 #include <sys/cpu.h> 38 39 #include <mips/mutex.h> 40 #include <mips/cpuregs.h> 41 #include <mips/reg.h> 42 43 #ifndef __BSD_PTENTRY_T__ 44 #define __BSD_PTENTRY_T__ 45 typedef uint32_t pt_entry_t; 46 #define PRIxPTE PRIx32 47 #endif 48 49 #include <uvm/pmap/tlb.h> 50 #endif /* !__ASSEMBLER__ */ 51 52 #ifdef _KERNEL 53 54 #if defined(_MODULAR) || defined(_LKM) || defined(_STANDALONE) 55 /* Assume all CPU architectures are valid for LKM's and standlone progs */ 56 #if !defined(__mips_n32) && !defined(__mips_n64) 57 #define MIPS1 1 58 #endif 59 #define MIPS3 1 60 #define MIPS4 1 61 #if !defined(__mips_n32) && !defined(__mips_n64) 62 #define MIPS32 1 63 #define MIPS32R2 1 64 #endif 65 #define MIPS64 1 66 #define MIPS64R2 1 67 #endif /* _MODULAR || _LKM || _STANDALONE */ 68 69 #if (MIPS1 + MIPS3 + MIPS4 + MIPS32 + MIPS32R2 + MIPS64 + MIPS64R2) == 0 70 #error at least one of MIPS1, MIPS3, MIPS4, MIPS32, MIPS32R2, MIPS64, or MIPS64R2 must be specified 71 #endif 72 73 /* Shortcut for MIPS3 or above defined */ 74 #if defined(MIPS3) || defined(MIPS4) \ 75 || defined(MIPS32) || defined(MIPS32R2) \ 76 || defined(MIPS64) || defined(MIPS64R2) 77 78 #define MIPS3_PLUS 1 79 #if !defined(MIPS32) && !defined(MIPS32R2) 80 #define MIPS3_64BIT 1 81 #endif 82 #if !defined(MIPS3) && !defined(MIPS4) 83 #define MIPSNN 1 84 #endif 85 #if defined(MIPS32R2) || defined(MIPS64R2) 86 #define MIPSNNR2 1 87 #endif 88 #else 89 #undef MIPS3_PLUS 90 #endif 91 92 #if !defined(MIPS3_PLUS) && (ENABLE_MIPS_8KB_PAGE + ENABLE_MIPS_16KB_PAGE) > 0 93 #error MIPS1 does not support non-4KB page sizes. 94 #endif 95 96 /* XXX some .S files look for MIPS3_PLUS */ 97 #ifndef __ASSEMBLER__ 98 99 /* XXX simonb 100 * Should the following be in a cpu_info type structure? 101 * And how many of these are per-cpu vs. per-system? (Ie, 102 * we can assume that all cpus have the same mmu-type, but 103 * maybe not that all cpus run at the same clock speed. 104 * Some SGI's apparently support R12k and R14k in the same 105 * box.) 106 */ 107 struct mips_options { 108 const struct pridtab *mips_cpu; 109 110 u_int mips_cpu_arch; 111 u_int mips_cpu_mhz; /* CPU speed in MHz, estimated by mc_cpuspeed(). */ 112 u_int mips_cpu_flags; 113 u_int mips_num_tlb_entries; 114 mips_prid_t mips_cpu_id; 115 mips_prid_t mips_fpu_id; 116 bool mips_has_r4k_mmu; 117 bool mips_has_llsc; 118 u_int mips3_pg_shift; 119 u_int mips3_pg_cached; 120 u_int mips3_cca_devmem; 121 #ifdef MIPS3_PLUS 122 #ifndef __mips_o32 123 uint64_t mips3_xkphys_cached; 124 #endif 125 uint64_t mips3_tlb_vpn_mask; 126 uint64_t mips3_tlb_pfn_mask; 127 uint32_t mips3_tlb_pg_mask; 128 #endif 129 }; 130 131 #endif /* !__ASSEMBLER__ */ 132 133 /* 134 * Macros to find the CPU architecture we're on at run-time, 135 * or if possible, at compile-time. 136 */ 137 138 #define CPU_ARCH_MIPSx 0 /* XXX unknown */ 139 #define CPU_ARCH_MIPS1 (1 << 0) 140 #define CPU_ARCH_MIPS2 (1 << 1) 141 #define CPU_ARCH_MIPS3 (1 << 2) 142 #define CPU_ARCH_MIPS4 (1 << 3) 143 #define CPU_ARCH_MIPS5 (1 << 4) 144 #define CPU_ARCH_MIPS32 (1 << 5) 145 #define CPU_ARCH_MIPS64 (1 << 6) 146 #define CPU_ARCH_MIPS32R2 (1 << 7) 147 #define CPU_ARCH_MIPS64R2 (1 << 8) 148 149 #define CPU_MIPS_R4K_MMU 0x00001 150 #define CPU_MIPS_NO_LLSC 0x00002 151 #define CPU_MIPS_CAUSE_IV 0x00004 152 #define CPU_MIPS_HAVE_SPECIAL_CCA 0x00008 /* Defaults to '3' if not set. */ 153 #define CPU_MIPS_CACHED_CCA_MASK 0x00070 154 #define CPU_MIPS_CACHED_CCA_SHIFT 4 155 #define CPU_MIPS_DOUBLE_COUNT 0x00080 /* 1 cp0 count == 2 clock cycles */ 156 #define CPU_MIPS_USE_WAIT 0x00100 /* Use "wait"-based cpu_idle() */ 157 #define CPU_MIPS_NO_WAIT 0x00200 /* Inverse of previous, for mips32/64 */ 158 #define CPU_MIPS_D_CACHE_COHERENT 0x00400 /* D-cache is fully coherent */ 159 #define CPU_MIPS_I_D_CACHE_COHERENT 0x00800 /* I-cache funcs don't need to flush the D-cache */ 160 #define CPU_MIPS_NO_LLADDR 0x01000 161 #define CPU_MIPS_HAVE_MxCR 0x02000 /* have mfcr, mtcr insns */ 162 #define CPU_MIPS_LOONGSON2 0x04000 163 #define MIPS_NOT_SUPP 0x08000 164 #define CPU_MIPS_HAVE_DSP 0x10000 165 #define CPU_MIPS_HAVE_USERLOCAL 0x20000 166 167 #endif /* !_LOCORE */ 168 169 #if ((MIPS1 + MIPS3 + MIPS4 + MIPS32 + MIPS32R2 + MIPS64 + MIPS64R2) == 1) || defined(_LOCORE) 170 171 #if defined(MIPS1) 172 173 # define CPUISMIPS3 0 174 # define CPUIS64BITS 0 175 # define CPUISMIPS32 0 176 # define CPUISMIPS32R2 0 177 # define CPUISMIPS64 0 178 # define CPUISMIPS64R2 0 179 # define CPUISMIPSNN 0 180 # define CPUISMIPSNNR2 0 181 # define MIPS_HAS_R4K_MMU 0 182 # define MIPS_HAS_CLOCK 0 183 # define MIPS_HAS_LLSC 0 184 # define MIPS_HAS_LLADDR 0 185 # define MIPS_HAS_LMMI 0 186 # define MIPS_HAS_DSP 0 187 # define MIPS_HAS_USERLOCAL 0 188 189 #elif defined(MIPS3) || defined(MIPS4) 190 191 # define CPUISMIPS3 1 192 # define CPUIS64BITS 1 193 # define CPUISMIPS32 0 194 # define CPUISMIPS32R2 0 195 # define CPUISMIPS64 0 196 # define CPUISMIPS64R2 0 197 # define CPUISMIPSNN 0 198 # define CPUISMIPSNNR2 0 199 # define MIPS_HAS_R4K_MMU 1 200 # define MIPS_HAS_CLOCK 1 201 # if defined(_LOCORE) 202 # if !defined(MIPS3_4100) 203 # define MIPS_HAS_LLSC 1 204 # else 205 # define MIPS_HAS_LLSC 0 206 # endif 207 # else /* _LOCORE */ 208 # define MIPS_HAS_LLSC (mips_options.mips_has_llsc) 209 # endif /* _LOCORE */ 210 # define MIPS_HAS_LLADDR ((mips_options.mips_cpu_flags & CPU_MIPS_NO_LLADDR) == 0) 211 # if defined(MIPS3_LOONGSON2) 212 # define MIPS_HAS_LMMI ((mips_options.mips_cpu_flags & CPU_MIPS_LOONGSON2) != 0) 213 # else 214 # define MIPS_HAS_LMMI 0 215 # endif 216 # define MIPS_HAS_DSP 0 217 # define MIPS_HAS_USERLOCAL 0 218 219 #elif defined(MIPS32) 220 221 # define CPUISMIPS3 1 222 # define CPUIS64BITS 0 223 # define CPUISMIPS32 1 224 # define CPUISMIPS32R2 0 225 # define CPUISMIPS64 0 226 # define CPUISMIPS64R2 0 227 # define CPUISMIPSNN 1 228 # define CPUISMIPSNNR2 0 229 # define MIPS_HAS_R4K_MMU 1 230 # define MIPS_HAS_CLOCK 1 231 # define MIPS_HAS_LLSC 1 232 # define MIPS_HAS_LLADDR ((mips_options.mips_cpu_flags & CPU_MIPS_NO_LLADDR) == 0) 233 # define MIPS_HAS_LMMI 0 234 # define MIPS_HAS_DSP 0 235 # define MIPS_HAS_USERLOCAL 0 236 237 #elif defined(MIPS32R2) 238 239 # define CPUISMIPS3 1 240 # define CPUIS64BITS 0 241 # define CPUISMIPS32 0 242 # define CPUISMIPS32R2 1 243 # define CPUISMIPS64 0 244 # define CPUISMIPS64R2 0 245 # define CPUISMIPSNN 1 246 # define CPUISMIPSNNR2 1 247 # define MIPS_HAS_R4K_MMU 1 248 # define MIPS_HAS_CLOCK 1 249 # define MIPS_HAS_LLSC 1 250 # define MIPS_HAS_LLADDR ((mips_options.mips_cpu_flags & CPU_MIPS_NO_LLADDR) == 0) 251 # define MIPS_HAS_LMMI 0 252 # define MIPS_HAS_DSP (mips_options.mips_cpu_flags & CPU_MIPS_HAVE_DSP) 253 # define MIPS_HAS_USERLOCAL (mips_options.mips_cpu_flags & CPU_MIPS_HAVE_USERLOCAL) 254 255 #elif defined(MIPS64) 256 257 # define CPUISMIPS3 1 258 # define CPUIS64BITS 1 259 # define CPUISMIPS32 0 260 # define CPUISMIPS32R2 0 261 # define CPUISMIPS64 1 262 # define CPUISMIPS64R2 0 263 # define CPUISMIPSNN 1 264 # define CPUISMIPSNNR2 0 265 # define MIPS_HAS_R4K_MMU 1 266 # define MIPS_HAS_CLOCK 1 267 # define MIPS_HAS_LLSC 1 268 # define MIPS_HAS_LLADDR ((mips_options.mips_cpu_flags & CPU_MIPS_NO_LLADDR) == 0) 269 # define MIPS_HAS_LMMI 0 270 # define MIPS_HAS_DSP 0 271 # define MIPS_HAS_USERLOCAL 0 272 273 #elif defined(MIPS64R2) 274 275 # define CPUISMIPS3 1 276 # define CPUIS64BITS 1 277 # define CPUISMIPS32 0 278 # define CPUISMIPS32R2 0 279 # define CPUISMIPS64 0 280 # define CPUISMIPS64R2 1 281 # define CPUISMIPSNN 1 282 # define CPUISMIPSNNR2 1 283 # define MIPS_HAS_R4K_MMU 1 284 # define MIPS_HAS_CLOCK 1 285 # define MIPS_HAS_LLSC 1 286 # define MIPS_HAS_LLADDR ((mips_options.mips_cpu_flags & CPU_MIPS_NO_LLADDR) == 0) 287 # define MIPS_HAS_LMMI 0 288 # define MIPS_HAS_DSP (mips_options.mips_cpu_flags & CPU_MIPS_HAVE_DSP) 289 # define MIPS_HAS_USERLOCAL (mips_options.mips_cpu_flags & CPU_MIPS_HAVE_USERLOCAL) 290 291 #endif 292 293 #else /* run-time test */ 294 295 #ifdef MIPS1 296 #define MIPS_HAS_R4K_MMU (mips_options.mips_has_r4k_mmu) 297 #define MIPS_HAS_LLSC (mips_options.mips_has_llsc) 298 #else 299 #define MIPS_HAS_R4K_MMU 1 300 #if !defined(MIPS3_4100) 301 #define MIPS_HAS_LLSC 1 302 #else 303 #define MIPS_HAS_LLSC (mips_options.mips_has_llsc) 304 #endif 305 #endif 306 #define MIPS_HAS_LLADDR ((mips_options.mips_cpu_flags & CPU_MIPS_NO_LLADDR) == 0) 307 #define MIPS_HAS_DSP (mips_options.mips_cpu_flags & CPU_MIPS_HAVE_DSP) 308 # define MIPS_HAS_USERLOCAL (mips_options.mips_cpu_flags & CPU_MIPS_HAVE_USERLOCAL) 309 310 /* This test is ... rather bogus */ 311 #define CPUISMIPS3 ((mips_options.mips_cpu_arch & \ 312 (CPU_ARCH_MIPS3 | CPU_ARCH_MIPS4 | CPU_ARCH_MIPS32 | CPU_ARCH_MIPS64)) != 0) 313 314 /* And these aren't much better while the previous test exists as is... */ 315 #define CPUISMIPS4 ((mips_options.mips_cpu_arch & CPU_ARCH_MIPS4) != 0) 316 #define CPUISMIPS5 ((mips_options.mips_cpu_arch & CPU_ARCH_MIPS5) != 0) 317 #define CPUISMIPS32 ((mips_options.mips_cpu_arch & CPU_ARCH_MIPS32) != 0) 318 #define CPUISMIPS32R2 ((mips_options.mips_cpu_arch & CPU_ARCH_MIPS32R2) != 0) 319 #define CPUISMIPS64 ((mips_options.mips_cpu_arch & CPU_ARCH_MIPS64) != 0) 320 #define CPUISMIPS64R2 ((mips_options.mips_cpu_arch & CPU_ARCH_MIPS64R2) != 0) 321 #define CPUISMIPSNN ((mips_options.mips_cpu_arch & \ 322 (CPU_ARCH_MIPS32 | CPU_ARCH_MIPS32R2 | CPU_ARCH_MIPS64 | CPU_ARCH_MIPS64R2)) != 0) 323 #define CPUISMIPSNNR2 ((mips_options.mips_cpu_arch & \ 324 (CPU_ARCH_MIPS32R2 | CPU_ARCH_MIPS64R2)) != 0) 325 #define CPUIS64BITS ((mips_options.mips_cpu_arch & \ 326 (CPU_ARCH_MIPS3 | CPU_ARCH_MIPS4 | CPU_ARCH_MIPS64 | CPU_ARCH_MIPS64R2)) != 0) 327 328 #define MIPS_HAS_CLOCK (mips_options.mips_cpu_arch >= CPU_ARCH_MIPS3) 329 330 #endif /* run-time test */ 331 332 #ifndef __ASSEMBLER__ 333 334 struct tlbmask; 335 struct trapframe; 336 337 void trap(uint32_t, uint32_t, vaddr_t, vaddr_t, struct trapframe *); 338 void ast(void); 339 340 void mips_fpu_trap(vaddr_t, struct trapframe *); 341 void mips_fpu_intr(vaddr_t, struct trapframe *); 342 343 vaddr_t mips_emul_branch(struct trapframe *, vaddr_t, uint32_t, bool); 344 void mips_emul_inst(uint32_t, uint32_t, vaddr_t, struct trapframe *); 345 346 void mips_emul_fp(uint32_t, struct trapframe *, uint32_t); 347 void mips_emul_branchdelayslot(uint32_t, struct trapframe *, uint32_t); 348 349 void mips_emul_lwc0(uint32_t, struct trapframe *, uint32_t); 350 void mips_emul_swc0(uint32_t, struct trapframe *, uint32_t); 351 void mips_emul_special(uint32_t, struct trapframe *, uint32_t); 352 void mips_emul_special3(uint32_t, struct trapframe *, uint32_t); 353 354 void mips_emul_lwc1(uint32_t, struct trapframe *, uint32_t); 355 void mips_emul_swc1(uint32_t, struct trapframe *, uint32_t); 356 void mips_emul_ldc1(uint32_t, struct trapframe *, uint32_t); 357 void mips_emul_sdc1(uint32_t, struct trapframe *, uint32_t); 358 359 void mips_emul_lb(uint32_t, struct trapframe *, uint32_t); 360 void mips_emul_lbu(uint32_t, struct trapframe *, uint32_t); 361 void mips_emul_lh(uint32_t, struct trapframe *, uint32_t); 362 void mips_emul_lhu(uint32_t, struct trapframe *, uint32_t); 363 void mips_emul_lw(uint32_t, struct trapframe *, uint32_t); 364 void mips_emul_lwl(uint32_t, struct trapframe *, uint32_t); 365 void mips_emul_lwr(uint32_t, struct trapframe *, uint32_t); 366 #if defined(__mips_n32) || defined(__mips_n64) || defined(__mips_o64) 367 void mips_emul_lwu(uint32_t, struct trapframe *, uint32_t); 368 void mips_emul_ld(uint32_t, struct trapframe *, uint32_t); 369 void mips_emul_ldl(uint32_t, struct trapframe *, uint32_t); 370 void mips_emul_ldr(uint32_t, struct trapframe *, uint32_t); 371 #endif 372 void mips_emul_sb(uint32_t, struct trapframe *, uint32_t); 373 void mips_emul_sh(uint32_t, struct trapframe *, uint32_t); 374 void mips_emul_sw(uint32_t, struct trapframe *, uint32_t); 375 void mips_emul_swl(uint32_t, struct trapframe *, uint32_t); 376 void mips_emul_swr(uint32_t, struct trapframe *, uint32_t); 377 #if defined(__mips_n32) || defined(__mips_n64) || defined(__mips_o64) 378 void mips_emul_sd(uint32_t, struct trapframe *, uint32_t); 379 void mips_emul_sdl(uint32_t, struct trapframe *, uint32_t); 380 void mips_emul_sdr(uint32_t, struct trapframe *, uint32_t); 381 #endif 382 383 uint32_t mips_cp0_cause_read(void); 384 void mips_cp0_cause_write(uint32_t); 385 uint32_t mips_cp0_status_read(void); 386 void mips_cp0_status_write(uint32_t); 387 388 void softint_process(uint32_t); 389 void softint_fast_dispatch(struct lwp *, int); 390 391 /* 392 * Convert an address to an offset used in a MIPS jump instruction. The offset 393 * contains the low 28 bits (allowing a jump to anywhere within the same 256MB 394 * segment of address space) of the address but since mips instructions are 395 * always on a 4 byte boundary the low 2 bits are always zero so the 28 bits 396 * get shifted right by 2 bits leaving us with a 26 bit result. To make the 397 * offset, we shift left to clear the upper four bits and then right by 6. 398 */ 399 #define fixup_addr2offset(x) ((((uint32_t)(uintptr_t)(x)) << 4) >> 6) 400 typedef bool (*mips_fixup_callback_t)(int32_t, uint32_t [2], void *); 401 struct mips_jump_fixup_info { 402 uint32_t jfi_stub; 403 uint32_t jfi_real; 404 }; 405 406 void fixup_splcalls(void); /* splstubs.c */ 407 bool mips_fixup_exceptions(mips_fixup_callback_t, void *); 408 bool mips_fixup_zero_relative(int32_t, uint32_t [2], void *); 409 intptr_t 410 mips_fixup_addr(const uint32_t *); 411 void mips_fixup_stubs(uint32_t *, uint32_t *); 412 413 /* 414 * Define these stubs... 415 */ 416 void mips_cpu_switch_resume(struct lwp *); 417 void wbflush(void); 418 419 #ifdef MIPS1 420 void mips1_tlb_invalidate_all(void); 421 422 uint32_t tx3900_cp0_config_read(void); 423 #endif 424 425 #ifdef MIPS3_PLUS 426 uint32_t mips3_cp0_compare_read(void); 427 void mips3_cp0_compare_write(uint32_t); 428 429 uint32_t mips3_cp0_config_read(void); 430 void mips3_cp0_config_write(uint32_t); 431 432 #ifdef MIPSNN 433 uint32_t mipsNN_cp0_config1_read(void); 434 void mipsNN_cp0_config1_write(uint32_t); 435 uint32_t mipsNN_cp0_config2_read(void); 436 uint32_t mipsNN_cp0_config3_read(void); 437 uint32_t mipsNN_cp0_config4_read(void); 438 uint32_t mipsNN_cp0_config5_read(void); 439 uint32_t mipsNN_cp0_config6_read(void); 440 uint32_t mipsNN_cp0_config7_read(void); 441 442 intptr_t mipsNN_cp0_watchlo_read(u_int); 443 void mipsNN_cp0_watchlo_write(u_int, intptr_t); 444 uint32_t mipsNN_cp0_watchhi_read(u_int); 445 void mipsNN_cp0_watchhi_write(u_int, uint32_t); 446 447 int32_t mipsNN_cp0_ebase_read(void); 448 void mipsNN_cp0_ebase_write(int32_t); 449 450 uint32_t mipsNN_cp0_rdhwr_cpunum(void); 451 452 #ifdef MIPSNNR2 453 void mipsNN_cp0_hwrena_write(uint32_t); 454 void mipsNN_cp0_userlocal_write(void *); 455 #endif 456 #endif /* MIPSNN */ 457 458 uint32_t mips3_cp0_count_read(void); 459 void mips3_cp0_count_write(uint32_t); 460 461 uint32_t mips3_cp0_wired_read(void); 462 void mips3_cp0_wired_write(uint32_t); 463 void mips3_cp0_pg_mask_write(uint32_t); 464 465 #endif /* MIPS3_PLUS */ 466 467 /* 64-bit address space accessor for n32, n64 ABI */ 468 /* 32-bit address space accessor for o32 ABI */ 469 static inline uint8_t mips_lbu(register_t addr) __unused; 470 static inline void mips_sb(register_t addr, uint8_t val) __unused; 471 static inline uint16_t mips_lhu(register_t addr) __unused; 472 static inline void mips_sh(register_t addr, uint16_t val) __unused; 473 static inline uint32_t mips_lwu(register_t addr) __unused; 474 static inline void mips_sw(register_t addr, uint32_t val) __unused; 475 #ifdef MIPS3_64BIT 476 #if defined(__mips_o32) 477 uint64_t mips3_ld(register_t addr); 478 void mips3_sd(register_t addr, uint64_t val); 479 #else 480 static inline uint64_t mips3_ld(register_t addr) __unused; 481 static inline void mips3_sd(register_t addr, uint64_t val) __unused; 482 #endif 483 #endif 484 485 static inline uint8_t 486 mips_lbu(register_t addr) 487 { 488 uint8_t rv; 489 #if defined(__mips_n32) 490 __asm volatile("lbu\t%0, 0(%1)" : "=r"(rv) : "d"(addr)); 491 #else 492 rv = *(const volatile uint8_t *)addr; 493 #endif 494 return rv; 495 } 496 497 static inline uint16_t 498 mips_lhu(register_t addr) 499 { 500 uint16_t rv; 501 #if defined(__mips_n32) 502 __asm volatile("lhu\t%0, 0(%1)" : "=r"(rv) : "d"(addr)); 503 #else 504 rv = *(const volatile uint16_t *)addr; 505 #endif 506 return rv; 507 } 508 509 static inline uint32_t 510 mips_lwu(register_t addr) 511 { 512 uint32_t rv; 513 #if defined(__mips_n32) 514 __asm volatile("lwu\t%0, 0(%1)" : "=r"(rv) : "d"(addr)); 515 #else 516 rv = *(const volatile uint32_t *)addr; 517 #endif 518 return (rv); 519 } 520 521 #if defined(MIPS3_64BIT) && !defined(__mips_o32) 522 static inline uint64_t 523 mips3_ld(register_t addr) 524 { 525 uint64_t rv; 526 #if defined(__mips_n32) 527 __asm volatile("ld\t%0, 0(%1)" : "=r"(rv) : "d"(addr)); 528 #elif defined(_LP64) 529 rv = *(const volatile uint64_t *)addr; 530 #else 531 #error unknown ABI 532 #endif 533 return (rv); 534 } 535 #endif /* MIPS3_64BIT && !__mips_o32 */ 536 537 static inline void 538 mips_sb(register_t addr, uint8_t val) 539 { 540 #if defined(__mips_n32) 541 __asm volatile("sb\t%1, 0(%0)" :: "d"(addr), "r"(val)); 542 #else 543 *(volatile uint8_t *)addr = val; 544 #endif 545 } 546 547 static inline void 548 mips_sh(register_t addr, uint16_t val) 549 { 550 #if defined(__mips_n32) 551 __asm volatile("sh\t%1, 0(%0)" :: "d"(addr), "r"(val)); 552 #else 553 *(volatile uint16_t *)addr = val; 554 #endif 555 } 556 557 static inline void 558 mips_sw(register_t addr, uint32_t val) 559 { 560 #if defined(__mips_n32) 561 __asm volatile("sw\t%1, 0(%0)" :: "d"(addr), "r"(val)); 562 #else 563 *(volatile uint32_t *)addr = val; 564 #endif 565 } 566 567 #if defined(MIPS3_64BIT) && !defined(__mips_o32) 568 static inline void 569 mips3_sd(register_t addr, uint64_t val) 570 { 571 #if defined(__mips_n32) 572 __asm volatile("sd\t%1, 0(%0)" :: "d"(addr), "r"(val)); 573 #else 574 *(volatile uint64_t *)addr = val; 575 #endif 576 } 577 #endif /* MIPS3_64BIT && !__mips_o32 */ 578 579 /* 580 * A vector with an entry for each mips-ISA-level dependent 581 * locore function, and macros which jump through it. 582 */ 583 typedef struct { 584 void (*ljv_cpu_switch_resume)(struct lwp *); 585 intptr_t ljv_lwp_trampoline; 586 void (*ljv_wbflush)(void); 587 tlb_asid_t (*ljv_tlb_get_asid)(void); 588 void (*ljv_tlb_set_asid)(tlb_asid_t pid); 589 void (*ljv_tlb_invalidate_asids)(tlb_asid_t, tlb_asid_t); 590 void (*ljv_tlb_invalidate_addr)(vaddr_t, tlb_asid_t); 591 void (*ljv_tlb_invalidate_globals)(void); 592 void (*ljv_tlb_invalidate_all)(void); 593 u_int (*ljv_tlb_record_asids)(u_long *, tlb_asid_t); 594 int (*ljv_tlb_update_addr)(vaddr_t, tlb_asid_t, pt_entry_t, bool); 595 void (*ljv_tlb_read_entry)(size_t, struct tlbmask *); 596 void (*ljv_tlb_write_entry)(size_t, const struct tlbmask *); 597 } mips_locore_jumpvec_t; 598 599 typedef struct { 600 u_int (*lav_atomic_cas_uint)(volatile u_int *, u_int, u_int); 601 u_long (*lav_atomic_cas_ulong)(volatile u_long *, u_long, u_long); 602 int (*lav_ucas_32)(volatile uint32_t *, uint32_t, uint32_t, 603 uint32_t *); 604 int (*lav_ucas_64)(volatile uint64_t *, uint64_t, uint64_t, 605 uint64_t *); 606 void (*lav_mutex_enter)(kmutex_t *); 607 void (*lav_mutex_exit)(kmutex_t *); 608 void (*lav_mutex_spin_enter)(kmutex_t *); 609 void (*lav_mutex_spin_exit)(kmutex_t *); 610 } mips_locore_atomicvec_t; 611 612 void mips_set_wbflush(void (*)(void)); 613 void mips_wait_idle(void); 614 615 void stacktrace(void); 616 void logstacktrace(void); 617 618 struct cpu_info; 619 struct splsw; 620 621 struct locoresw { 622 void (*lsw_wbflush)(void); 623 void (*lsw_cpu_idle)(void); 624 int (*lsw_send_ipi)(struct cpu_info *, int); 625 void (*lsw_cpu_offline_md)(void); 626 void (*lsw_cpu_init)(struct cpu_info *); 627 void (*lsw_cpu_run)(struct cpu_info *); 628 int (*lsw_bus_error)(unsigned int); 629 }; 630 631 struct mips_vmfreelist { 632 paddr_t fl_start; 633 paddr_t fl_end; 634 int fl_freelist; 635 }; 636 637 struct cpu_info * 638 cpu_info_alloc(struct pmap_tlb_info *, cpuid_t, cpuid_t, cpuid_t, 639 cpuid_t); 640 void cpu_attach_common(device_t, struct cpu_info *); 641 void cpu_startup_common(void); 642 643 #ifdef MULTIPROCESSOR 644 void cpu_hatch(struct cpu_info *ci); 645 void cpu_trampoline(void); 646 void cpu_halt(void); 647 void cpu_halt_others(void); 648 void cpu_pause(struct reg *); 649 void cpu_pause_others(void); 650 void cpu_resume(cpuid_t); 651 void cpu_resume_others(void); 652 bool cpu_is_paused(cpuid_t); 653 void cpu_debug_dump(void); 654 655 extern kcpuset_t *cpus_running; 656 extern kcpuset_t *cpus_hatched; 657 extern kcpuset_t *cpus_paused; 658 extern kcpuset_t *cpus_resumed; 659 extern kcpuset_t *cpus_halted; 660 #endif 661 662 /* copy.S */ 663 uint32_t mips_ufetch32(const void *); 664 int mips_ustore32_isync(void *, uint32_t); 665 666 int32_t kfetch_32(volatile uint32_t *, uint32_t); 667 668 /* trap.c */ 669 void netintr(void); 670 bool kdbpeek(vaddr_t, int *); 671 672 /* mips_dsp.c */ 673 void dsp_init(void); 674 void dsp_discard(lwp_t *); 675 void dsp_load(void); 676 void dsp_save(lwp_t *); 677 bool dsp_used_p(const lwp_t *); 678 extern const pcu_ops_t mips_dsp_ops; 679 680 /* mips_fpu.c */ 681 void fpu_init(void); 682 void fpu_discard(lwp_t *); 683 void fpu_load(void); 684 void fpu_save(lwp_t *); 685 bool fpu_used_p(const lwp_t *); 686 extern const pcu_ops_t mips_fpu_ops; 687 688 /* mips_machdep.c */ 689 void dumpsys(void); 690 int savectx(struct pcb *); 691 void cpu_identify(device_t); 692 693 /* locore*.S */ 694 int badaddr(void *, size_t); 695 int badaddr64(uint64_t, size_t); 696 697 /* vm_machdep.c */ 698 int ioaccess(vaddr_t, paddr_t, vsize_t); 699 int iounaccess(vaddr_t, vsize_t); 700 701 /* 702 * The "active" locore-function vector, and 703 */ 704 extern const mips_locore_atomicvec_t mips_llsc_locore_atomicvec; 705 706 extern mips_locore_atomicvec_t mips_locore_atomicvec; 707 extern mips_locore_jumpvec_t mips_locore_jumpvec; 708 extern struct locoresw mips_locoresw; 709 710 extern int mips_poolpage_vmfreelist; /* freelist to allocate poolpages */ 711 extern struct mips_options mips_options; 712 713 struct splsw; 714 struct mips_vmfreelist; 715 struct phys_ram_seg; 716 717 void mips64r2_vector_init(const struct splsw *); 718 void mips_vector_init(const struct splsw *, bool); 719 void mips_init_msgbuf(void); 720 void mips_init_lwp0_uarea(void); 721 void mips_page_physload(vaddr_t, vaddr_t, 722 const struct phys_ram_seg *, size_t, 723 const struct mips_vmfreelist *, size_t); 724 725 726 /* 727 * CPU identification, from PRID register. 728 */ 729 #define MIPS_PRID_REV(x) (((x) >> 0) & 0x00ff) 730 #define MIPS_PRID_IMPL(x) (((x) >> 8) & 0x00ff) 731 732 /* pre-MIPS32/64 */ 733 #define MIPS_PRID_RSVD(x) (((x) >> 16) & 0xffff) 734 #define MIPS_PRID_REV_MIN(x) ((MIPS_PRID_REV(x) >> 0) & 0x0f) 735 #define MIPS_PRID_REV_MAJ(x) ((MIPS_PRID_REV(x) >> 4) & 0x0f) 736 737 /* MIPS32/64 */ 738 #define MIPS_PRID_CID(x) (((x) >> 16) & 0x00ff) /* Company ID */ 739 #define MIPS_PRID_CID_PREHISTORIC 0x00 /* Not MIPS32/64 */ 740 #define MIPS_PRID_CID_MTI 0x01 /* MIPS Technologies, Inc. */ 741 #define MIPS_PRID_CID_BROADCOM 0x02 /* Broadcom */ 742 #define MIPS_PRID_CID_ALCHEMY 0x03 /* Alchemy Semiconductor */ 743 #define MIPS_PRID_CID_SIBYTE 0x04 /* SiByte */ 744 #define MIPS_PRID_CID_SANDCRAFT 0x05 /* SandCraft */ 745 #define MIPS_PRID_CID_PHILIPS 0x06 /* Philips */ 746 #define MIPS_PRID_CID_TOSHIBA 0x07 /* Toshiba */ 747 #define MIPS_PRID_CID_MICROSOFT 0x07 /* Microsoft also, sigh */ 748 #define MIPS_PRID_CID_LSI 0x08 /* LSI */ 749 /* 0x09 unannounced */ 750 /* 0x0a unannounced */ 751 #define MIPS_PRID_CID_LEXRA 0x0b /* Lexra */ 752 #define MIPS_PRID_CID_RMI 0x0c /* RMI / NetLogic */ 753 #define MIPS_PRID_CID_CAVIUM 0x0d /* Cavium */ 754 #define MIPS_PRID_CID_INGENIC 0xe1 755 #define MIPS_PRID_COPTS(x) (((x) >> 24) & 0x00ff) /* Company Options */ 756 757 #ifdef _KERNEL 758 /* 759 * Global variables used to communicate CPU type, and parameters 760 * such as cache size, from locore to higher-level code (e.g., pmap). 761 */ 762 void mips_pagecopy(register_t dst, register_t src); 763 void mips_pagezero(register_t dst); 764 765 #ifdef __HAVE_MIPS_MACHDEP_CACHE_CONFIG 766 void mips_machdep_cache_config(void); 767 #endif 768 769 /* 770 * trapframe argument passed to trap() 771 */ 772 773 #if 0 774 #define TF_AST 0 /* really zero */ 775 #define TF_V0 _R_V0 776 #define TF_V1 _R_V1 777 #define TF_A0 _R_A0 778 #define TF_A1 _R_A1 779 #define TF_A2 _R_A2 780 #define TF_A3 _R_A3 781 #define TF_T0 _R_T0 782 #define TF_T1 _R_T1 783 #define TF_T2 _R_T2 784 #define TF_T3 _R_T3 785 786 #if defined(__mips_n32) || defined(__mips_n64) 787 #define TF_A4 _R_A4 788 #define TF_A5 _R_A5 789 #define TF_A6 _R_A6 790 #define TF_A7 _R_A7 791 #else 792 #define TF_T4 _R_T4 793 #define TF_T5 _R_T5 794 #define TF_T6 _R_T6 795 #define TF_T7 _R_T7 796 #endif /* __mips_n32 || __mips_n64 */ 797 798 #define TF_TA0 _R_TA0 799 #define TF_TA1 _R_TA1 800 #define TF_TA2 _R_TA2 801 #define TF_TA3 _R_TA3 802 803 #define TF_T8 _R_T8 804 #define TF_T9 _R_T9 805 806 #define TF_RA _R_RA 807 #define TF_SR _R_SR 808 #define TF_MULLO _R_MULLO 809 #define TF_MULHI _R_MULLO 810 #define TF_EPC _R_PC /* may be changed by trap() call */ 811 812 #define TF_NREGS (sizeof(struct reg) / sizeof(mips_reg_t)) 813 #endif 814 815 struct trapframe { 816 struct reg tf_registers; 817 #define tf_regs tf_registers.r_regs 818 uint32_t tf_ppl; /* previous priority level */ 819 mips_reg_t tf_pad; /* for 8 byte aligned */ 820 }; 821 822 CTASSERT(sizeof(struct trapframe) % (4*sizeof(mips_reg_t)) == 0); 823 824 /* 825 * Stack frame for kernel traps. four args passed in registers. 826 * A trapframe is pointed to by the 5th arg, and a dummy sixth argument 827 * is used to avoid alignment problems 828 */ 829 830 struct kernframe { 831 #if defined(__mips_o32) || defined(__mips_o64) 832 register_t cf_args[4 + 1]; 833 #if defined(__mips_o32) 834 register_t cf_pad; /* (for 8 byte alignment) */ 835 #endif 836 #endif 837 #if defined(__mips_n32) || defined(__mips_n64) 838 register_t cf_pad[2]; /* for 16 byte alignment */ 839 #endif 840 register_t cf_sp; 841 register_t cf_ra; 842 struct trapframe cf_frame; 843 }; 844 845 CTASSERT(sizeof(struct kernframe) % (2*sizeof(mips_reg_t)) == 0); 846 847 /* 848 * PRocessor IDentity TABle 849 */ 850 851 struct pridtab { 852 int cpu_cid; 853 int cpu_pid; 854 int cpu_rev; /* -1 == wildcard */ 855 int cpu_copts; /* -1 == wildcard */ 856 int cpu_isa; /* -1 == probed (mips32/mips64) */ 857 int cpu_ntlb; /* -1 == unknown, 0 == probed */ 858 int cpu_flags; 859 u_int cpu_cp0flags; /* presence of some cp0 regs */ 860 u_int cpu_cidflags; /* company-specific flags */ 861 const char *cpu_name; 862 }; 863 864 /* 865 * bitfield defines for cpu_cp0flags 866 */ 867 #define MIPS_CP0FL_USE __BIT(0) /* use these flags */ 868 #define MIPS_CP0FL_ECC __BIT(1) 869 #define MIPS_CP0FL_CACHE_ERR __BIT(2) 870 #define MIPS_CP0FL_EIRR __BIT(3) 871 #define MIPS_CP0FL_EIMR __BIT(4) 872 #define MIPS_CP0FL_EBASE __BIT(5) /* XXX probeable - shouldn't be hard coded */ 873 #define MIPS_CP0FL_CONFIG __BIT(6) /* XXX defined - doesn't need to be hard coded */ 874 #define MIPS_CP0FL_CONFIG1 __BIT(7) /* XXX probeable - shouldn't be hard coded */ 875 #define MIPS_CP0FL_CONFIG2 __BIT(8) /* XXX probeable - shouldn't be hard coded */ 876 #define MIPS_CP0FL_CONFIG3 __BIT(9) /* XXX probeable - shouldn't be hard coded */ 877 #define MIPS_CP0FL_CONFIG4 __BIT(10) /* XXX probeable - shouldn't be hard coded */ 878 #define MIPS_CP0FL_CONFIG5 __BIT(11) /* XXX probeable - shouldn't be hard coded */ 879 #define MIPS_CP0FL_CONFIG6 __BIT(12) /* XXX probeable - shouldn't be hard coded */ 880 #define MIPS_CP0FL_CONFIG7 __BIT(13) /* XXX probeable - shouldn't be hard coded */ 881 882 /* 883 * cpu_cidflags defines, by company 884 */ 885 /* 886 * RMI company-specific cpu_cidflags 887 */ 888 #define MIPS_CIDFL_RMI_TYPE __BITS(2,0) 889 # define CIDFL_RMI_TYPE_XLR 0 890 # define CIDFL_RMI_TYPE_XLS 1 891 # define CIDFL_RMI_TYPE_XLP 2 892 #define MIPS_CIDFL_RMI_THREADS_MASK __BITS(6,3) 893 # define MIPS_CIDFL_RMI_THREADS_SHIFT 3 894 #define MIPS_CIDFL_RMI_CORES_MASK __BITS(10,7) 895 # define MIPS_CIDFL_RMI_CORES_SHIFT 7 896 # define LOG2_1 0 897 # define LOG2_2 1 898 # define LOG2_4 2 899 # define LOG2_8 3 900 # define MIPS_CIDFL_RMI_CPUS(ncores, nthreads) \ 901 ((LOG2_ ## ncores << MIPS_CIDFL_RMI_CORES_SHIFT) \ 902 |(LOG2_ ## nthreads << MIPS_CIDFL_RMI_THREADS_SHIFT)) 903 # define MIPS_CIDFL_RMI_NTHREADS(cidfl) \ 904 (1 << (((cidfl) & MIPS_CIDFL_RMI_THREADS_MASK) \ 905 >> MIPS_CIDFL_RMI_THREADS_SHIFT)) 906 # define MIPS_CIDFL_RMI_NCORES(cidfl) \ 907 (1 << (((cidfl) & MIPS_CIDFL_RMI_CORES_MASK) \ 908 >> MIPS_CIDFL_RMI_CORES_SHIFT)) 909 #define MIPS_CIDFL_RMI_L2SZ_MASK __BITS(14,11) 910 # define MIPS_CIDFL_RMI_L2SZ_SHIFT 11 911 # define RMI_L2SZ_256KB 0 912 # define RMI_L2SZ_512KB 1 913 # define RMI_L2SZ_1MB 2 914 # define RMI_L2SZ_2MB 3 915 # define RMI_L2SZ_4MB 4 916 # define MIPS_CIDFL_RMI_L2(l2sz) \ 917 (RMI_L2SZ_ ## l2sz << MIPS_CIDFL_RMI_L2SZ_SHIFT) 918 # define MIPS_CIDFL_RMI_L2SZ(cidfl) \ 919 ((256*1024) << (((cidfl) & MIPS_CIDFL_RMI_L2SZ_MASK) \ 920 >> MIPS_CIDFL_RMI_L2SZ_SHIFT)) 921 #endif /* !__ASSEMBLER__ */ 922 #endif /* _KERNEL */ 923 924 #endif /* _MIPS_LOCORE_H */ 925
Indexes created Thu Sep 25 16:09:42 GMT 2025