1/* $NetBSD: cpuregs.h,v 1.70 2006/05/15 02:26:54 simonb Exp $ */ 2 3/* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)machConst.h 8.1 (Berkeley) 6/10/93 35 * 36 * machConst.h -- 37 * 38 * Machine dependent constants. 39 * 40 * Copyright (C) 1989 Digital Equipment Corporation. 41 * Permission to use, copy, modify, and distribute this software and 42 * its documentation for any purpose and without fee is hereby granted, 43 * provided that the above copyright notice appears in all copies. 44 * Digital Equipment Corporation makes no representations about the 45 * suitability of this software for any purpose. It is provided "as is" 46 * without express or implied warranty. 47 * 48 * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machConst.h, 49 * v 9.2 89/10/21 15:55:22 jhh Exp SPRITE (DECWRL) 50 * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAddrs.h, 51 * v 1.2 89/08/15 18:28:21 rab Exp SPRITE (DECWRL) 52 * from: Header: /sprite/src/kernel/vm/ds3100.md/RCS/vmPmaxConst.h, 53 * v 9.1 89/09/18 17:33:00 shirriff Exp SPRITE (DECWRL) 54 * 55 * $FreeBSD$ 56 */ 57 58#ifndef _MIPS_CPUREGS_H_ 59#define _MIPS_CPUREGS_H_ 60 61/* 62 * Address space. 63 * 32-bit mips CPUS partition their 32-bit address space into four segments: 64 * 65 * kuseg 0x00000000 - 0x7fffffff User virtual mem, mapped 66 * kseg0 0x80000000 - 0x9fffffff Physical memory, cached, unmapped 67 * kseg1 0xa0000000 - 0xbfffffff Physical memory, uncached, unmapped 68 * kseg2 0xc0000000 - 0xffffffff kernel-virtual, mapped 69 * 70 * Caching of mapped addresses is controlled by bits in the TLB entry. 71 */ 72 73#define MIPS_KSEG0_LARGEST_PHYS (0x20000000) 74#define MIPS_KSEG0_PHYS_MASK (0x1fffffff) 75#define MIPS_XKPHYS_LARGEST_PHYS (0x10000000000) /* 40 bit PA */ 76#define MIPS_XKPHYS_PHYS_MASK (0x0ffffffffff) 77 78#ifndef LOCORE 79#define MIPS_KUSEG_START 0x00000000 80#define MIPS_KSEG0_START ((intptr_t)(int32_t)0x80000000) 81#define MIPS_KSEG0_END ((intptr_t)(int32_t)0x9fffffff) 82#define MIPS_KSEG1_START ((intptr_t)(int32_t)0xa0000000) 83#define MIPS_KSEG1_END ((intptr_t)(int32_t)0xbfffffff) 84#define MIPS_KSSEG_START ((intptr_t)(int32_t)0xc0000000) 85#define MIPS_KSSEG_END ((intptr_t)(int32_t)0xdfffffff) 86#define MIPS_KSEG3_START ((intptr_t)(int32_t)0xe0000000) 87#define MIPS_KSEG3_END ((intptr_t)(int32_t)0xffffffff) 88#define MIPS_KSEG2_START MIPS_KSSEG_START 89#define MIPS_KSEG2_END MIPS_KSSEG_END 90#endif 91 92#define MIPS_PHYS_TO_KSEG0(x) ((uintptr_t)(x) | MIPS_KSEG0_START) 93#define MIPS_PHYS_TO_KSEG1(x) ((uintptr_t)(x) | MIPS_KSEG1_START) 94#define MIPS_KSEG0_TO_PHYS(x) ((uintptr_t)(x) & MIPS_KSEG0_PHYS_MASK) 95#define MIPS_KSEG1_TO_PHYS(x) ((uintptr_t)(x) & MIPS_KSEG0_PHYS_MASK) 96 97#define MIPS_IS_KSEG0_ADDR(x) \ 98 (((vm_offset_t)(x) >= MIPS_KSEG0_START) && \ 99 ((vm_offset_t)(x) <= MIPS_KSEG0_END)) 100#define MIPS_IS_KSEG1_ADDR(x) \ 101 (((vm_offset_t)(x) >= MIPS_KSEG1_START) && \ 102 ((vm_offset_t)(x) <= MIPS_KSEG1_END)) 103#define MIPS_IS_VALID_PTR(x) (MIPS_IS_KSEG0_ADDR(x) || \ 104 MIPS_IS_KSEG1_ADDR(x)) 105 106/* 107 * Cache Coherency Attributes: 108 * UC: Uncached. 109 * UA: Uncached accelerated. 110 * C: Cacheable, coherency unspecified. 111 * CNC: Cacheable non-coherent. 112 * CC: Cacheable coherent. 113 * CCS: Cacheable coherent, shared read. 114 * CCE: Cacheable coherent, exclusive read. 115 * CCEW: Cacheable coherent, exclusive write. 116 * CCUOW: Cacheable coherent, update on write. 117 * 118 * Note that some bits vary in meaning across implementations (and that the 119 * listing here is no doubt incomplete) and that the optimal cached mode varies 120 * between implementations. 0x02 is required to be UC and 0x03 is required to 121 * be a least C. 122 * 123 * We define the following logical bits: 124 * UNCACHED: 125 * The optimal uncached mode for the target CPU type. This must 126 * be suitable for use in accessing memory-mapped devices. 127 * CACHED: The optional cached mode for the target CPU type. 128 */ 129 130#define MIPS_CCA_UC 0x02 /* Uncached. */ 131#define MIPS_CCA_C 0x03 /* Cacheable, coherency unspecified. */ 132 133#if defined(CPU_R4000) || defined(CPU_R10000) 134#define MIPS_CCA_CNC 0x03 135#define MIPS_CCA_CCE 0x04 136#define MIPS_CCA_CCEW 0x05 137 138#ifdef CPU_R4000 139#define MIPS_CCA_CCUOW 0x06 140#endif 141 142#ifdef CPU_R10000 143#define MIPS_CCA_UA 0x07 144#endif 145 146#define MIPS_CCA_CACHED MIPS_CCA_CCEW 147#endif /* defined(CPU_R4000) || defined(CPU_R10000) */ 148 149#if defined(CPU_SB1) 150#define MIPS_CCA_CC 0x05 /* Cacheable Coherent. */ 151#endif 152 153#if defined(CPU_MIPS74K) 154#define MIPS_CCA_UNCACHED 0x02 155#define MIPS_CCA_CACHED 0x03 156#endif 157 158/* 159 * 1004K and 1074K cores, as well as interAptiv and proAptiv cores, support 160 * Cacheable Coherent CCAs 0x04 and 0x05, as well as Cacheable non-Coherent 161 * CCA 0x03 and Uncached Accelerated CCA 0x07 162 */ 163#if defined(CPU_MIPS1004K) || defined(CPU_MIPS1074K) || \ 164 defined(CPU_INTERAPTIV) || defined(CPU_PROAPTIV) 165#define MIPS_CCA_CNC 0x03 166#define MIPS_CCA_CCE 0x04 167#define MIPS_CCA_CCS 0x05 168#define MIPS_CCA_UA 0x07 169 170/* We use shared read CCA for CACHED CCA */ 171#define MIPS_CCA_CACHED MIPS_CCA_CCS 172#endif 173 174#ifndef MIPS_CCA_UNCACHED 175#define MIPS_CCA_UNCACHED MIPS_CCA_UC 176#endif 177 178/* 179 * If we don't know which cached mode to use and there is a cache coherent 180 * mode, use it. If there is not a cache coherent mode, use the required 181 * cacheable mode. 182 */ 183#ifndef MIPS_CCA_CACHED 184#ifdef MIPS_CCA_CC 185#define MIPS_CCA_CACHED MIPS_CCA_CC 186#else 187#define MIPS_CCA_CACHED MIPS_CCA_C 188#endif 189#endif 190 191#define MIPS_PHYS_TO_XKPHYS(cca,x) \ 192 ((0x2ULL << 62) | ((unsigned long long)(cca) << 59) | (x)) 193#define MIPS_PHYS_TO_XKPHYS_CACHED(x) \ 194 ((0x2ULL << 62) | ((unsigned long long)(MIPS_CCA_CACHED) << 59) | (x)) 195#define MIPS_PHYS_TO_XKPHYS_UNCACHED(x) \ 196 ((0x2ULL << 62) | ((unsigned long long)(MIPS_CCA_UNCACHED) << 59) | (x)) 197 198#define MIPS_XKPHYS_TO_PHYS(x) ((uintptr_t)(x) & MIPS_XKPHYS_PHYS_MASK) 199 200#define MIPS_XKPHYS_START 0x8000000000000000 201#define MIPS_XKPHYS_END 0xbfffffffffffffff 202#define MIPS_XUSEG_START 0x0000000000000000 203#define MIPS_XUSEG_END 0x0000010000000000 204#define MIPS_XKSEG_START 0xc000000000000000 205#define MIPS_XKSEG_END 0xc00000ff80000000 206#define MIPS_XKSEG_COMPAT32_START 0xffffffff80000000 207#define MIPS_XKSEG_COMPAT32_END 0xffffffffffffffff 208#define MIPS_XKSEG_TO_COMPAT32(va) ((va) & 0xffffffff) 209 210#ifdef __mips_n64 211#define MIPS_DIRECT_MAPPABLE(pa) 1 212#define MIPS_PHYS_TO_DIRECT(pa) MIPS_PHYS_TO_XKPHYS_CACHED(pa) 213#define MIPS_PHYS_TO_DIRECT_UNCACHED(pa) MIPS_PHYS_TO_XKPHYS_UNCACHED(pa) 214#define MIPS_DIRECT_TO_PHYS(va) MIPS_XKPHYS_TO_PHYS(va) 215#else 216#define MIPS_DIRECT_MAPPABLE(pa) ((pa) < MIPS_KSEG0_LARGEST_PHYS) 217#define MIPS_PHYS_TO_DIRECT(pa) MIPS_PHYS_TO_KSEG0(pa) 218#define MIPS_PHYS_TO_DIRECT_UNCACHED(pa) MIPS_PHYS_TO_KSEG1(pa) 219#define MIPS_DIRECT_TO_PHYS(va) MIPS_KSEG0_TO_PHYS(va) 220#endif 221 222/* CPU dependent mtc0 hazard hook */ 223#if defined(CPU_CNMIPS) || defined(CPU_RMI) 224#define COP0_SYNC 225#elif defined(CPU_NLM) 226#define COP0_SYNC .word 0xc0 /* ehb */ 227#elif defined(CPU_SB1) 228#define COP0_SYNC ssnop; ssnop; ssnop; ssnop; ssnop; ssnop; ssnop; ssnop; ssnop 229#elif defined(CPU_MIPS24K) || defined(CPU_MIPS34K) || \ 230 defined(CPU_MIPS74K) || defined(CPU_MIPS1004K) || \ 231 defined(CPU_MIPS1074K) || defined(CPU_INTERAPTIV) || \ 232 defined(CPU_PROAPTIV) 233/* 234 * According to MIPS32tm Architecture for Programmers, Vol.II, rev. 2.00: 235 * "As EHB becomes standard in MIPS implementations, the previous SSNOPs can be 236 * removed, leaving only the EHB". 237 * Also, all MIPS32 Release 2 implementations have the EHB instruction, which 238 * resolves all execution hazards. The same goes for MIPS32 Release 3. 239 */ 240#define COP0_SYNC .word 0xc0 /* ehb */ 241#else 242/* 243 * Pick a reasonable default based on the "typical" spacing described in the 244 * "CP0 Hazards" chapter of MIPS Architecture Book Vol III. 245 */ 246#define COP0_SYNC ssnop; ssnop; ssnop; ssnop; .word 0xc0; 247#endif 248#define COP0_HAZARD_FPUENABLE nop; nop; nop; nop; 249 250/* 251 * The bits in the cause register. 252 * 253 * Bits common to r3000 and r4000: 254 * 255 * MIPS_CR_BR_DELAY Exception happened in branch delay slot. 256 * MIPS_CR_COP_ERR Coprocessor error. 257 * MIPS_CR_IP Interrupt pending bits defined below. 258 * (same meaning as in CAUSE register). 259 * MIPS_CR_EXC_CODE The exception type (see exception codes below). 260 * 261 * Differences: 262 * r3k has 4 bits of execption type, r4k has 5 bits. 263 */ 264#define MIPS_CR_BR_DELAY 0x80000000 265#define MIPS_CR_COP_ERR 0x30000000 266#define MIPS_CR_EXC_CODE 0x0000007C /* five bits */ 267#define MIPS_CR_IP 0x0000FF00 268#define MIPS_CR_EXC_CODE_SHIFT 2 269#define MIPS_CR_COP_ERR_SHIFT 28 270 271/* 272 * The bits in the status register. All bits are active when set to 1. 273 * 274 * R3000 status register fields: 275 * MIPS_SR_COP_USABILITY Control the usability of the four coprocessors. 276 * MIPS_SR_TS TLB shutdown. 277 * 278 * MIPS_SR_INT_IE Master (current) interrupt enable bit. 279 * 280 * Differences: 281 * r3k has cache control is via frobbing SR register bits, whereas the 282 * r4k cache control is via explicit instructions. 283 * r3k has a 3-entry stack of kernel/user bits, whereas the 284 * r4k has kernel/supervisor/user. 285 */ 286#define MIPS_SR_COP_USABILITY 0xf0000000 287#define MIPS_SR_COP_0_BIT 0x10000000 288#define MIPS_SR_COP_1_BIT 0x20000000 289#define MIPS_SR_COP_2_BIT 0x40000000 290 291 /* r4k and r3k differences, see below */ 292 293#define MIPS_SR_MX 0x01000000 /* MIPS64 */ 294#define MIPS_SR_PX 0x00800000 /* MIPS64 */ 295#define MIPS_SR_BEV 0x00400000 /* Use boot exception vector */ 296#define MIPS_SR_TS 0x00200000 297#define MIPS_SR_DE 0x00010000 298 299#define MIPS_SR_INT_IE 0x00000001 300/*#define MIPS_SR_MBZ 0x0f8000c0*/ /* Never used, true for r3k */ 301#define MIPS_SR_INT_MASK 0x0000ff00 302 303/* 304 * R4000 status register bit definitons, 305 * where different from r2000/r3000. 306 */ 307#define MIPS_SR_XX 0x80000000 308#define MIPS_SR_RP 0x08000000 309#define MIPS_SR_FR 0x04000000 310#define MIPS_SR_RE 0x02000000 311 312#define MIPS_SR_DIAG_DL 0x01000000 /* QED 52xx */ 313#define MIPS_SR_DIAG_IL 0x00800000 /* QED 52xx */ 314#define MIPS_SR_SR 0x00100000 315#define MIPS_SR_NMI 0x00080000 /* MIPS32/64 */ 316#define MIPS_SR_DIAG_CH 0x00040000 317#define MIPS_SR_DIAG_CE 0x00020000 318#define MIPS_SR_DIAG_PE 0x00010000 319#define MIPS_SR_EIE 0x00010000 /* TX79/R5900 */ 320#define MIPS_SR_KX 0x00000080 321#define MIPS_SR_SX 0x00000040 322#define MIPS_SR_UX 0x00000020 323#define MIPS_SR_KSU_MASK 0x00000018 324#define MIPS_SR_KSU_USER 0x00000010 325#define MIPS_SR_KSU_SUPER 0x00000008 326#define MIPS_SR_KSU_KERNEL 0x00000000 327#define MIPS_SR_ERL 0x00000004 328#define MIPS_SR_EXL 0x00000002 329 330/* 331 * The interrupt masks. 332 * If a bit in the mask is 1 then the interrupt is enabled (or pending). 333 */ 334#define MIPS_INT_MASK 0xff00 335#define MIPS_INT_MASK_5 0x8000 336#define MIPS_INT_MASK_4 0x4000 337#define MIPS_INT_MASK_3 0x2000 338#define MIPS_INT_MASK_2 0x1000 339#define MIPS_INT_MASK_1 0x0800 340#define MIPS_INT_MASK_0 0x0400 341#define MIPS_HARD_INT_MASK 0xfc00 342#define MIPS_SOFT_INT_MASK_1 0x0200 343#define MIPS_SOFT_INT_MASK_0 0x0100 344 345/* 346 * The bits in the MIPS3 config register. 347 * 348 * bit 0..5: R/W, Bit 6..31: R/O 349 */ 350 351/* kseg0 coherency algorithm - see MIPS3_TLB_ATTR values */ 352#define MIPS_CONFIG_K0_MASK 0x00000007 353 354/* 355 * R/W Update on Store Conditional 356 * 0: Store Conditional uses coherency algorithm specified by TLB 357 * 1: Store Conditional uses cacheable coherent update on write 358 */ 359#define MIPS_CONFIG_CU 0x00000008 360 361#define MIPS_CONFIG_DB 0x00000010 /* Primary D-cache line size */ 362#define MIPS_CONFIG_IB 0x00000020 /* Primary I-cache line size */ 363#define MIPS_CONFIG_CACHE_L1_LSIZE(config, bit) \ 364 (((config) & (bit)) ? 32 : 16) 365 366#define MIPS_CONFIG_DC_MASK 0x000001c0 /* Primary D-cache size */ 367#define MIPS_CONFIG_DC_SHIFT 6 368#define MIPS_CONFIG_IC_MASK 0x00000e00 /* Primary I-cache size */ 369#define MIPS_CONFIG_IC_SHIFT 9 370#define MIPS_CONFIG_C_DEFBASE 0x1000 /* default base 2^12 */ 371 372/* Cache size mode indication: available only on Vr41xx CPUs */ 373#define MIPS_CONFIG_CS 0x00001000 374#define MIPS_CONFIG_C_4100BASE 0x0400 /* base is 2^10 if CS=1 */ 375#define MIPS_CONFIG_CACHE_SIZE(config, mask, base, shift) \ 376 ((base) << (((config) & (mask)) >> (shift))) 377 378/* External cache enable: Controls L2 for R5000/Rm527x and L3 for Rm7000 */ 379#define MIPS_CONFIG_SE 0x00001000 380 381/* Block ordering: 0: sequential, 1: sub-block */ 382#define MIPS_CONFIG_EB 0x00002000 383 384/* ECC mode - 0: ECC mode, 1: parity mode */ 385#define MIPS_CONFIG_EM 0x00004000 386 387/* BigEndianMem - 0: kernel and memory are little endian, 1: big endian */ 388#define MIPS_CONFIG_BE 0x00008000 389 390/* Dirty Shared coherency state - 0: enabled, 1: disabled */ 391#define MIPS_CONFIG_SM 0x00010000 392 393/* Secondary Cache - 0: present, 1: not present */ 394#define MIPS_CONFIG_SC 0x00020000 395 396/* System Port width - 0: 64-bit, 1: 32-bit (QED RM523x), 2,3: reserved */ 397#define MIPS_CONFIG_EW_MASK 0x000c0000 398#define MIPS_CONFIG_EW_SHIFT 18 399 400/* Secondary Cache port width - 0: 128-bit data path to S-cache, 1: reserved */ 401#define MIPS_CONFIG_SW 0x00100000 402 403/* Split Secondary Cache Mode - 0: I/D mixed, 1: I/D separated by SCAddr(17) */ 404#define MIPS_CONFIG_SS 0x00200000 405 406/* Secondary Cache line size */ 407#define MIPS_CONFIG_SB_MASK 0x00c00000 408#define MIPS_CONFIG_SB_SHIFT 22 409#define MIPS_CONFIG_CACHE_L2_LSIZE(config) \ 410 (0x10 << (((config) & MIPS_CONFIG_SB_MASK) >> MIPS_CONFIG_SB_SHIFT)) 411 412/* Write back data rate */ 413#define MIPS_CONFIG_EP_MASK 0x0f000000 414#define MIPS_CONFIG_EP_SHIFT 24 415 416/* System clock ratio - this value is CPU dependent */ 417#define MIPS_CONFIG_EC_MASK 0x70000000 418#define MIPS_CONFIG_EC_SHIFT 28 419 420/* Master-Checker Mode - 1: enabled */ 421#define MIPS_CONFIG_CM 0x80000000 422 423/* 424 * The bits in the MIPS4 config register. 425 */ 426 427/* 428 * Location of exception vectors. 429 * 430 * Common vectors: reset and UTLB miss. 431 */ 432#define MIPS_RESET_EXC_VEC ((intptr_t)(int32_t)0xBFC00000) 433#define MIPS_UTLB_MISS_EXC_VEC ((intptr_t)(int32_t)0x80000000) 434 435/* 436 * MIPS-III exception vectors 437 */ 438#define MIPS_XTLB_MISS_EXC_VEC ((intptr_t)(int32_t)0x80000080) 439#define MIPS_CACHE_ERR_EXC_VEC ((intptr_t)(int32_t)0x80000100) 440#define MIPS_GEN_EXC_VEC ((intptr_t)(int32_t)0x80000180) 441 442/* 443 * MIPS32/MIPS64 (and some MIPS3) dedicated interrupt vector. 444 */ 445#define MIPS_INTR_EXC_VEC 0x80000200 446 447/* 448 * Coprocessor 0 registers: 449 * 450 * v--- width for mips I,III,32,64 451 * (3=32bit, 6=64bit, i=impl dep) 452 * 0 MIPS_COP_0_TLB_INDEX 3333 TLB Index. 453 * 1 MIPS_COP_0_TLB_RANDOM 3333 TLB Random. 454 * 2 MIPS_COP_0_TLB_LO0 .636 r4k TLB entry low. 455 * 3 MIPS_COP_0_TLB_LO1 .636 r4k TLB entry low, extended. 456 * 4 MIPS_COP_0_TLB_CONTEXT 3636 TLB Context. 457 * 5 MIPS_COP_0_TLB_PG_MASK .333 TLB Page Mask register. 458 * 6 MIPS_COP_0_TLB_WIRED .333 Wired TLB number. 459 * 7 MIPS_COP_0_INFO ..33 Info registers 460 * 8 MIPS_COP_0_BAD_VADDR 3636 Bad virtual address. 461 * 9 MIPS_COP_0_COUNT .333 Count register. 462 * 10 MIPS_COP_0_TLB_HI 3636 TLB entry high. 463 * 11 MIPS_COP_0_COMPARE .333 Compare (against Count). 464 * 12 MIPS_COP_0_STATUS 3333 Status register. 465 * 13 MIPS_COP_0_CAUSE 3333 Exception cause register. 466 * 14 MIPS_COP_0_EXC_PC 3636 Exception PC. 467 * 15 MIPS_COP_0_PRID 3333 Processor revision identifier. 468 * 16 MIPS_COP_0_CONFIG 3333 Configuration register. 469 * 16/1 MIPS_COP_0_CONFIG1 ..33 Configuration register 1. 470 * 16/2 MIPS_COP_0_CONFIG2 ..33 Configuration register 2. 471 * 16/3 MIPS_COP_0_CONFIG3 ..33 Configuration register 3. 472 * 16/4 MIPS_COP_0_CONFIG4 ..33 Configuration register 4. 473 * 17 MIPS_COP_0_LLADDR .336 Load Linked Address. 474 * 18 MIPS_COP_0_WATCH_LO .336 WatchLo register. 475 * 19 MIPS_COP_0_WATCH_HI .333 WatchHi register. 476 * 20 MIPS_COP_0_TLB_XCONTEXT .6.6 TLB XContext register. 477 * 23 MIPS_COP_0_DEBUG .... Debug JTAG register. 478 * 24 MIPS_COP_0_DEPC .... DEPC JTAG register. 479 * 25 MIPS_COP_0_PERFCNT ..36 Performance Counter register. 480 * 26 MIPS_COP_0_ECC .3ii ECC / Error Control register. 481 * 27 MIPS_COP_0_CACHE_ERR .3ii Cache Error register. 482 * 28/0 MIPS_COP_0_TAG_LO .3ii Cache TagLo register (instr). 483 * 28/1 MIPS_COP_0_DATA_LO ..ii Cache DataLo register (instr). 484 * 28/2 MIPS_COP_0_TAG_LO ..ii Cache TagLo register (data). 485 * 28/3 MIPS_COP_0_DATA_LO ..ii Cache DataLo register (data). 486 * 29/0 MIPS_COP_0_TAG_HI .3ii Cache TagHi register (instr). 487 * 29/1 MIPS_COP_0_DATA_HI ..ii Cache DataHi register (instr). 488 * 29/2 MIPS_COP_0_TAG_HI ..ii Cache TagHi register (data). 489 * 29/3 MIPS_COP_0_DATA_HI ..ii Cache DataHi register (data). 490 * 30 MIPS_COP_0_ERROR_PC .636 Error EPC register. 491 * 31 MIPS_COP_0_DESAVE .... DESAVE JTAG register. 492 */ 493 494/* Deal with inclusion from an assembly file. */ 495#if defined(_LOCORE) || defined(LOCORE) 496#define _(n) $n 497#else 498#define _(n) n 499#endif 500 501 502#define MIPS_COP_0_TLB_INDEX _(0) 503#define MIPS_COP_0_TLB_RANDOM _(1) 504 /* Name and meaning of TLB bits for $2 differ on r3k and r4k. */ 505 506#define MIPS_COP_0_TLB_CONTEXT _(4) 507 /* $5 and $6 new with MIPS-III */ 508#define MIPS_COP_0_BAD_VADDR _(8) 509#define MIPS_COP_0_TLB_HI _(10) 510#define MIPS_COP_0_STATUS _(12) 511#define MIPS_COP_0_CAUSE _(13) 512#define MIPS_COP_0_EXC_PC _(14) 513#define MIPS_COP_0_PRID _(15) 514 515/* MIPS-III */ 516#define MIPS_COP_0_TLB_LO0 _(2) 517#define MIPS_COP_0_TLB_LO1 _(3) 518 519#define MIPS_COP_0_TLB_PG_MASK _(5) 520#define MIPS_COP_0_TLB_WIRED _(6) 521 522#define MIPS_COP_0_COUNT _(9) 523#define MIPS_COP_0_COMPARE _(11) 524 525#define MIPS_COP_0_CONFIG _(16) 526#define MIPS_COP_0_LLADDR _(17) 527#define MIPS_COP_0_WATCH_LO _(18) 528#define MIPS_COP_0_WATCH_HI _(19) 529#define MIPS_COP_0_TLB_XCONTEXT _(20) 530#define MIPS_COP_0_ECC _(26) 531#define MIPS_COP_0_CACHE_ERR _(27) 532#define MIPS_COP_0_TAG_LO _(28) 533#define MIPS_COP_0_TAG_HI _(29) 534#define MIPS_COP_0_ERROR_PC _(30) 535 536/* MIPS32/64 */ 537#define MIPS_COP_0_INFO _(7) 538#define MIPS_COP_0_DEBUG _(23) 539#define MIPS_COP_0_DEPC _(24) 540#define MIPS_COP_0_PERFCNT _(25) 541#define MIPS_COP_0_DATA_LO _(28) 542#define MIPS_COP_0_DATA_HI _(29) 543#define MIPS_COP_0_DESAVE _(31) 544 545/* MIPS32 Config register definitions */ 546#define MIPS_MMU_NONE 0x00 /* No MMU present */ 547#define MIPS_MMU_TLB 0x01 /* Standard TLB */ 548#define MIPS_MMU_BAT 0x02 /* Standard BAT */ 549#define MIPS_MMU_FIXED 0x03 /* Standard fixed mapping */ 550 551#define MIPS_CONFIG0_MT_MASK 0x00000380 /* bits 9..7 MMU Type */ 552#define MIPS_CONFIG0_MT_SHIFT 7 553#define MIPS_CONFIG0_BE 0x00008000 /* data is big-endian */ 554#define MIPS_CONFIG0_VI 0x00000008 /* instruction cache is virtual */ 555 556#define MIPS_CONFIG1_TLBSZ_MASK 0x7E000000 /* bits 30..25 # tlb entries minus one */ 557#define MIPS_CONFIG1_TLBSZ_SHIFT 25 558 559#define MIPS_CONFIG1_IS_MASK 0x01C00000 /* bits 24..22 icache sets per way */ 560#define MIPS_CONFIG1_IS_SHIFT 22 561#define MIPS_CONFIG1_IL_MASK 0x00380000 /* bits 21..19 icache line size */ 562#define MIPS_CONFIG1_IL_SHIFT 19 563#define MIPS_CONFIG1_IA_MASK 0x00070000 /* bits 18..16 icache associativity */ 564#define MIPS_CONFIG1_IA_SHIFT 16 565#define MIPS_CONFIG1_DS_MASK 0x0000E000 /* bits 15..13 dcache sets per way */ 566#define MIPS_CONFIG1_DS_SHIFT 13 567#define MIPS_CONFIG1_DL_MASK 0x00001C00 /* bits 12..10 dcache line size */ 568#define MIPS_CONFIG1_DL_SHIFT 10 569#define MIPS_CONFIG1_DA_MASK 0x00000380 /* bits 9.. 7 dcache associativity */ 570#define MIPS_CONFIG1_DA_SHIFT 7 571#define MIPS_CONFIG1_LOWBITS 0x0000007F 572#define MIPS_CONFIG1_C2 0x00000040 /* Coprocessor 2 implemented */ 573#define MIPS_CONFIG1_MD 0x00000020 /* MDMX ASE implemented (MIPS64) */ 574#define MIPS_CONFIG1_PC 0x00000010 /* Performance counters implemented */ 575#define MIPS_CONFIG1_WR 0x00000008 /* Watch registers implemented */ 576#define MIPS_CONFIG1_CA 0x00000004 /* MIPS16e ISA implemented */ 577#define MIPS_CONFIG1_EP 0x00000002 /* EJTAG implemented */ 578#define MIPS_CONFIG1_FP 0x00000001 /* FPU implemented */ 579 580#define MIPS_CONFIG2_SA_SHIFT 0 /* Secondary cache associativity */ 581#define MIPS_CONFIG2_SA_MASK 0xf 582#define MIPS_CONFIG2_SL_SHIFT 4 /* Secondary cache line size */ 583#define MIPS_CONFIG2_SL_MASK 0xf 584#define MIPS_CONFIG2_SS_SHIFT 8 /* Secondary cache sets per way */ 585#define MIPS_CONFIG2_SS_MASK 0xf 586 587#define MIPS_CONFIG3_CMGCR_MASK (1 << 29) /* Coherence manager present */ 588 589#define MIPS_CONFIG4_MMUSIZEEXT 0x000000FF /* bits 7.. 0 MMU Size Extension */ 590#define MIPS_CONFIG4_MMUEXTDEF 0x0000C000 /* bits 15.14 MMU Extension Definition */ 591#define MIPS_CONFIG4_MMUEXTDEF_MMUSIZEEXT 0x00004000 /* This values denotes CONFIG4 bits */ 592 593/* 594 * Values for the code field in a break instruction. 595 */ 596#define MIPS_BREAK_INSTR 0x0000000d 597#define MIPS_BREAK_VAL_MASK 0x03ff0000 598#define MIPS_BREAK_VAL_SHIFT 16 599#define MIPS_BREAK_KDB_VAL 512 600#define MIPS_BREAK_SSTEP_VAL 513 601#define MIPS_BREAK_BRKPT_VAL 514 602#define MIPS_BREAK_SOVER_VAL 515 603#define MIPS_BREAK_DDB_VAL 516 604#define MIPS_BREAK_KDB (MIPS_BREAK_INSTR | \ 605 (MIPS_BREAK_KDB_VAL << MIPS_BREAK_VAL_SHIFT)) 606#define MIPS_BREAK_SSTEP (MIPS_BREAK_INSTR | \ 607 (MIPS_BREAK_SSTEP_VAL << MIPS_BREAK_VAL_SHIFT)) 608#define MIPS_BREAK_BRKPT (MIPS_BREAK_INSTR | \ 609 (MIPS_BREAK_BRKPT_VAL << MIPS_BREAK_VAL_SHIFT)) 610#define MIPS_BREAK_SOVER (MIPS_BREAK_INSTR | \ 611 (MIPS_BREAK_SOVER_VAL << MIPS_BREAK_VAL_SHIFT)) 612#define MIPS_BREAK_DDB (MIPS_BREAK_INSTR | \ 613 (MIPS_BREAK_DDB_VAL << MIPS_BREAK_VAL_SHIFT)) 614 615/* 616 * Mininum and maximum cache sizes. 617 */ 618#define MIPS_MIN_CACHE_SIZE (16 * 1024) 619#define MIPS_MAX_CACHE_SIZE (256 * 1024) 620#define MIPS_MAX_PCACHE_SIZE (32 * 1024) /* max. primary cache size */ 621 622/* 623 * The floating point version and status registers. 624 */ 625#define MIPS_FPU_ID $0 626#define MIPS_FPU_CSR $31 627 628/* 629 * The floating point coprocessor status register bits. 630 */ 631#define MIPS_FPU_ROUNDING_BITS 0x00000003 632#define MIPS_FPU_ROUND_RN 0x00000000 633#define MIPS_FPU_ROUND_RZ 0x00000001 634#define MIPS_FPU_ROUND_RP 0x00000002 635#define MIPS_FPU_ROUND_RM 0x00000003 636#define MIPS_FPU_STICKY_BITS 0x0000007c 637#define MIPS_FPU_STICKY_INEXACT 0x00000004 638#define MIPS_FPU_STICKY_UNDERFLOW 0x00000008 639#define MIPS_FPU_STICKY_OVERFLOW 0x00000010 640#define MIPS_FPU_STICKY_DIV0 0x00000020 641#define MIPS_FPU_STICKY_INVALID 0x00000040 642#define MIPS_FPU_ENABLE_BITS 0x00000f80 643#define MIPS_FPU_ENABLE_INEXACT 0x00000080 644#define MIPS_FPU_ENABLE_UNDERFLOW 0x00000100 645#define MIPS_FPU_ENABLE_OVERFLOW 0x00000200 646#define MIPS_FPU_ENABLE_DIV0 0x00000400 647#define MIPS_FPU_ENABLE_INVALID 0x00000800 648#define MIPS_FPU_EXCEPTION_BITS 0x0003f000 649#define MIPS_FPU_EXCEPTION_INEXACT 0x00001000 650#define MIPS_FPU_EXCEPTION_UNDERFLOW 0x00002000 651#define MIPS_FPU_EXCEPTION_OVERFLOW 0x00004000 652#define MIPS_FPU_EXCEPTION_DIV0 0x00008000 653#define MIPS_FPU_EXCEPTION_INVALID 0x00010000 654#define MIPS_FPU_EXCEPTION_UNIMPL 0x00020000 655#define MIPS_FPU_COND_BIT 0x00800000 656#define MIPS_FPU_FLUSH_BIT 0x01000000 /* r4k, MBZ on r3k */ 657#define MIPS_FPC_MBZ_BITS 0xfe7c0000 658 659 660/* 661 * Constants to determine if have a floating point instruction. 662 */ 663#define MIPS_OPCODE_SHIFT 26 664#define MIPS_OPCODE_C1 0x11 665 666/* Coherence manager constants */ 667#define MIPS_CMGCRB_BASE 11 668#define MIPS_CMGCRF_BASE (~((1 << MIPS_CMGCRB_BASE) - 1)) 669 670#endif /* _MIPS_CPUREGS_H_ */ 671