arch/mips/include/asm/mipsregs.h

   1 /*
   2  * Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001 by Ralf Baechle
   3  * Copyright (C) 2000 Silicon Graphics, Inc.
   4  * Modified for further R[236]000 support by Paul M. Antoine, 1996.
   5  * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
   6  * Copyright (C) 2000, 07 MIPS Technologies, Inc.
   7  * Copyright (C) 2003, 2004  Maciej W. Rozycki
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0
  10  */
  11 #ifndef _ASM_MIPSREGS_H
  12 #define _ASM_MIPSREGS_H
  13
  14 /*
  15  * The following macros are especially useful for __asm__
  16  * inline assembler.
  17  */
  18 #ifndef __STR
  19 #define __STR(x) #x
  20 #endif
  21 #ifndef STR
  22 #define STR(x) __STR(x)
  23 #endif
  24
  25 /*
  26  *  Configure language
  27  */
  28 #ifdef __ASSEMBLY__
  29 #define _ULCAST_
  30 #else
  31 #define _ULCAST_ (unsigned long)
  32 #endif
  33
  34 /*
  35  * Coprocessor 0 register names
  36  */
  37 #define CP0_INDEX $0
  38 #define CP0_RANDOM $1
  39 #define CP0_ENTRYLO0 $2
  40 #define CP0_ENTRYLO1 $3
  41 #define CP0_CONF $3
  42 #define CP0_CONTEXT $4
  43 #define CP0_PAGEMASK $5
  44 #define CP0_WIRED $6
  45 #define CP0_INFO $7
  46 #define CP0_HWRENA $7, 0
  47 #define CP0_BADVADDR $8
  48 #define CP0_BADINSTR $8, 1
  49 #define CP0_COUNT $9
  50 #define CP0_ENTRYHI $10
  51 #define CP0_COMPARE $11
  52 #define CP0_STATUS $12
  53 #define CP0_CAUSE $13
  54 #define CP0_EPC $14
  55 #define CP0_PRID $15
  56 #define CP0_EBASE $15, 1
  57 #define CP0_CMGCRBASE $15, 3
  58 #define CP0_CONFIG $16
  59 #define CP0_CONFIG3 $16, 3
  60 #define CP0_CONFIG5 $16, 5
  61 #define CP0_LLADDR $17
  62 #define CP0_WATCHLO $18
  63 #define CP0_WATCHHI $19
  64 #define CP0_XCONTEXT $20
  65 #define CP0_FRAMEMASK $21
  66 #define CP0_DIAGNOSTIC $22
  67 #define CP0_DEBUG $23
  68 #define CP0_DEPC $24
  69 #define CP0_PERFORMANCE $25
  70 #define CP0_ECC $26
  71 #define CP0_CACHEERR $27
  72 #define CP0_TAGLO $28
  73 #define CP0_TAGHI $29
  74 #define CP0_ERROREPC $30
  75 #define CP0_DESAVE $31
  76
  77 /*
  78  * R4640/R4650 cp0 register names.  These registers are listed
  79  * here only for completeness; without MMU these CPUs are not useable
  80  * by Linux.  A future ELKS port might take make Linux run on them
  81  * though ...
  82  */
  83 #define CP0_IBASE $0
  84 #define CP0_IBOUND $1
  85 #define CP0_DBASE $2
  86 #define CP0_DBOUND $3
  87 #define CP0_CALG $17
  88 #define CP0_IWATCH $18
  89 #define CP0_DWATCH $19
  90
  91 /*
  92  * Coprocessor 0 Set 1 register names
  93  */
  94 #define CP0_S1_DERRADDR0  $26
  95 #define CP0_S1_DERRADDR1  $27
  96 #define CP0_S1_INTCONTROL $20
  97
  98 /*
  99  * Coprocessor 0 Set 2 register names
 100  */
 101 #define CP0_S2_SRSCTL     $12   /* MIPSR2 */
 102
 103 /*
 104  * Coprocessor 0 Set 3 register names
 105  */
 106 #define CP0_S3_SRSMAP     $12   /* MIPSR2 */
 107
 108 /*
 109  *  TX39 Series
 110  */
 111 #define CP0_TX39_CACHE  $7
 112
 113
 114 /* Generic EntryLo bit definitions */
 115 #define ENTRYLO_G               (_ULCAST_(1) << 0)
 116 #define ENTRYLO_V               (_ULCAST_(1) << 1)
 117 #define ENTRYLO_D               (_ULCAST_(1) << 2)
 118 #define ENTRYLO_C_SHIFT         3
 119 #define ENTRYLO_C               (_ULCAST_(7) << ENTRYLO_C_SHIFT)
 120
 121 /* R3000 EntryLo bit definitions */
 122 #define R3K_ENTRYLO_G           (_ULCAST_(1) << 8)
 123 #define R3K_ENTRYLO_V           (_ULCAST_(1) << 9)
 124 #define R3K_ENTRYLO_D           (_ULCAST_(1) << 10)
 125 #define R3K_ENTRYLO_N           (_ULCAST_(1) << 11)
 126
 127 /* MIPS32/64 EntryLo bit definitions */
 128 #define MIPS_ENTRYLO_PFN_SHIFT  6
 129 #define MIPS_ENTRYLO_XI         (_ULCAST_(1) << (BITS_PER_LONG - 2))
 130 #define MIPS_ENTRYLO_RI         (_ULCAST_(1) << (BITS_PER_LONG - 1))
 131
 132 /*
 133  * Values for PageMask register
 134  */
 135 #ifdef CONFIG_CPU_VR41XX
 136
 137 /* Why doesn't stupidity hurt ... */
 138
 139 #define PM_1K           0x00000000
 140 #define PM_4K           0x00001800
 141 #define PM_16K          0x00007800
 142 #define PM_64K          0x0001f800
 143 #define PM_256K         0x0007f800
 144
 145 #else
 146
 147 #define PM_4K           0x00000000
 148 #define PM_8K           0x00002000
 149 #define PM_16K          0x00006000
 150 #define PM_32K          0x0000e000
 151 #define PM_64K          0x0001e000
 152 #define PM_128K         0x0003e000
 153 #define PM_256K         0x0007e000
 154 #define PM_512K         0x000fe000
 155 #define PM_1M           0x001fe000
 156 #define PM_2M           0x003fe000
 157 #define PM_4M           0x007fe000
 158 #define PM_8M           0x00ffe000
 159 #define PM_16M          0x01ffe000
 160 #define PM_32M          0x03ffe000
 161 #define PM_64M          0x07ffe000
 162 #define PM_256M         0x1fffe000
 163 #define PM_1G           0x7fffe000
 164
 165 #endif
 166
 167 /*
 168  * Values used for computation of new tlb entries
 169  */
 170 #define PL_4K           12
 171 #define PL_16K          14
 172 #define PL_64K          16
 173 #define PL_256K         18
 174 #define PL_1M           20
 175 #define PL_4M           22
 176 #define PL_16M          24
 177 #define PL_64M          26
 178 #define PL_256M         28
 179
 180 /*
 181  * PageGrain bits
 182  */
 183 #define PG_RIE          (_ULCAST_(1) <<  31)
 184 #define PG_XIE          (_ULCAST_(1) <<  30)
 185 #define PG_ELPA         (_ULCAST_(1) <<  29)
 186 #define PG_ESP          (_ULCAST_(1) <<  28)
 187 #define PG_IEC          (_ULCAST_(1) <<  27)
 188
 189 /* MIPS32/64 EntryHI bit definitions */
 190 #define MIPS_ENTRYHI_EHINV      (_ULCAST_(1) << 10)
 191
 192 /*
 193  * R4x00 interrupt enable / cause bits
 194  */
 195 #define IE_SW0          (_ULCAST_(1) <<  8)
 196 #define IE_SW1          (_ULCAST_(1) <<  9)
 197 #define IE_IRQ0         (_ULCAST_(1) << 10)
 198 #define IE_IRQ1         (_ULCAST_(1) << 11)
 199 #define IE_IRQ2         (_ULCAST_(1) << 12)
 200 #define IE_IRQ3         (_ULCAST_(1) << 13)
 201 #define IE_IRQ4         (_ULCAST_(1) << 14)
 202 #define IE_IRQ5         (_ULCAST_(1) << 15)
 203
 204 /*
 205  * R4x00 interrupt cause bits
 206  */
 207 #define C_SW0           (_ULCAST_(1) <<  8)
 208 #define C_SW1           (_ULCAST_(1) <<  9)
 209 #define C_IRQ0          (_ULCAST_(1) << 10)
 210 #define C_IRQ1          (_ULCAST_(1) << 11)
 211 #define C_IRQ2          (_ULCAST_(1) << 12)
 212 #define C_IRQ3          (_ULCAST_(1) << 13)
 213 #define C_IRQ4          (_ULCAST_(1) << 14)
 214 #define C_IRQ5          (_ULCAST_(1) << 15)
 215
 216 /*
 217  * Bitfields in the R4xx0 cp0 status register
 218  */
 219 #define ST0_IE                  0x00000001
 220 #define ST0_EXL                 0x00000002
 221 #define ST0_ERL                 0x00000004
 222 #define ST0_KSU                 0x00000018
 223 #  define KSU_USER              0x00000010
 224 #  define KSU_SUPERVISOR        0x00000008
 225 #  define KSU_KERNEL            0x00000000
 226 #define ST0_UX                  0x00000020
 227 #define ST0_SX                  0x00000040
 228 #define ST0_KX                  0x00000080
 229 #define ST0_DE                  0x00010000
 230 #define ST0_CE                  0x00020000
 231
 232 /*
 233  * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
 234  * cacheops in userspace.  This bit exists only on RM7000 and RM9000
 235  * processors.
 236  */
 237 #define ST0_CO                  0x08000000
 238
 239 /*
 240  * Bitfields in the R[23]000 cp0 status register.
 241  */
 242 #define ST0_IEC                 0x00000001
 243 #define ST0_KUC                 0x00000002
 244 #define ST0_IEP                 0x00000004
 245 #define ST0_KUP                 0x00000008
 246 #define ST0_IEO                 0x00000010
 247 #define ST0_KUO                 0x00000020
 248 /* bits 6 & 7 are reserved on R[23]000 */
 249 #define ST0_ISC                 0x00010000
 250 #define ST0_SWC                 0x00020000
 251 #define ST0_CM                  0x00080000
 252
 253 /*
 254  * Bits specific to the R4640/R4650
 255  */
 256 #define ST0_UM                  (_ULCAST_(1) <<  4)
 257 #define ST0_IL                  (_ULCAST_(1) << 23)
 258 #define ST0_DL                  (_ULCAST_(1) << 24)
 259
 260 /*
 261  * Enable the MIPS MDMX and DSP ASEs
 262  */
 263 #define ST0_MX                  0x01000000
 264
 265 /*
 266  * Status register bits available in all MIPS CPUs.
 267  */
 268 #define ST0_IM                  0x0000ff00
 269 #define  STATUSB_IP0            8
 270 #define  STATUSF_IP0            (_ULCAST_(1) <<  8)
 271 #define  STATUSB_IP1            9
 272 #define  STATUSF_IP1            (_ULCAST_(1) <<  9)
 273 #define  STATUSB_IP2            10
 274 #define  STATUSF_IP2            (_ULCAST_(1) << 10)
 275 #define  STATUSB_IP3            11
 276 #define  STATUSF_IP3            (_ULCAST_(1) << 11)
 277 #define  STATUSB_IP4            12
 278 #define  STATUSF_IP4            (_ULCAST_(1) << 12)
 279 #define  STATUSB_IP5            13
 280 #define  STATUSF_IP5            (_ULCAST_(1) << 13)
 281 #define  STATUSB_IP6            14
 282 #define  STATUSF_IP6            (_ULCAST_(1) << 14)
 283 #define  STATUSB_IP7            15
 284 #define  STATUSF_IP7            (_ULCAST_(1) << 15)
 285 #define  STATUSB_IP8            0
 286 #define  STATUSF_IP8            (_ULCAST_(1) <<  0)
 287 #define  STATUSB_IP9            1
 288 #define  STATUSF_IP9            (_ULCAST_(1) <<  1)
 289 #define  STATUSB_IP10           2
 290 #define  STATUSF_IP10           (_ULCAST_(1) <<  2)
 291 #define  STATUSB_IP11           3
 292 #define  STATUSF_IP11           (_ULCAST_(1) <<  3)
 293 #define  STATUSB_IP12           4
 294 #define  STATUSF_IP12           (_ULCAST_(1) <<  4)
 295 #define  STATUSB_IP13           5
 296 #define  STATUSF_IP13           (_ULCAST_(1) <<  5)
 297 #define  STATUSB_IP14           6
 298 #define  STATUSF_IP14           (_ULCAST_(1) <<  6)
 299 #define  STATUSB_IP15           7
 300 #define  STATUSF_IP15           (_ULCAST_(1) <<  7)
 301 #define ST0_CH                  0x00040000
 302 #define ST0_NMI                 0x00080000
 303 #define ST0_SR                  0x00100000
 304 #define ST0_TS                  0x00200000
 305 #define ST0_BEV                 0x00400000
 306 #define ST0_RE                  0x02000000
 307 #define ST0_FR                  0x04000000
 308 #define ST0_CU                  0xf0000000
 309 #define ST0_CU0                 0x10000000
 310 #define ST0_CU1                 0x20000000
 311 #define ST0_CU2                 0x40000000
 312 #define ST0_CU3                 0x80000000
 313 #define ST0_XX                  0x80000000      /* MIPS IV naming */
 314
 315 /*
 316  * Bitfields and bit numbers in the coprocessor 0 IntCtl register. (MIPSR2)
 317  */
 318 #define INTCTLB_IPFDC           23
 319 #define INTCTLF_IPFDC           (_ULCAST_(7) << INTCTLB_IPFDC)
 320 #define INTCTLB_IPPCI           26
 321 #define INTCTLF_IPPCI           (_ULCAST_(7) << INTCTLB_IPPCI)
 322 #define INTCTLB_IPTI            29
 323 #define INTCTLF_IPTI            (_ULCAST_(7) << INTCTLB_IPTI)
 324
 325 /*
 326  * Bitfields and bit numbers in the coprocessor 0 cause register.
 327  *
 328  * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
 329  */
 330 #define CAUSEB_EXCCODE          2
 331 #define CAUSEF_EXCCODE          (_ULCAST_(31)  <<  2)
 332 #define CAUSEB_IP               8
 333 #define CAUSEF_IP               (_ULCAST_(255) <<  8)
 334 #define  CAUSEB_IP0             8
 335 #define  CAUSEF_IP0             (_ULCAST_(1)   <<  8)
 336 #define  CAUSEB_IP1             9
 337 #define  CAUSEF_IP1             (_ULCAST_(1)   <<  9)
 338 #define  CAUSEB_IP2             10
 339 #define  CAUSEF_IP2             (_ULCAST_(1)   << 10)
 340 #define  CAUSEB_IP3             11
 341 #define  CAUSEF_IP3             (_ULCAST_(1)   << 11)
 342 #define  CAUSEB_IP4             12
 343 #define  CAUSEF_IP4             (_ULCAST_(1)   << 12)
 344 #define  CAUSEB_IP5             13
 345 #define  CAUSEF_IP5             (_ULCAST_(1)   << 13)
 346 #define  CAUSEB_IP6             14
 347 #define  CAUSEF_IP6             (_ULCAST_(1)   << 14)
 348 #define  CAUSEB_IP7             15
 349 #define  CAUSEF_IP7             (_ULCAST_(1)   << 15)
 350 #define CAUSEB_FDCI             21
 351 #define CAUSEF_FDCI             (_ULCAST_(1)   << 21)
 352 #define CAUSEB_IV               23
 353 #define CAUSEF_IV               (_ULCAST_(1)   << 23)
 354 #define CAUSEB_PCI              26
 355 #define CAUSEF_PCI              (_ULCAST_(1)   << 26)
 356 #define CAUSEB_CE               28
 357 #define CAUSEF_CE               (_ULCAST_(3)   << 28)
 358 #define CAUSEB_TI               30
 359 #define CAUSEF_TI               (_ULCAST_(1)   << 30)
 360 #define CAUSEB_BD               31
 361 #define CAUSEF_BD               (_ULCAST_(1)   << 31)
 362
 363 /*
 364  * Bits in the coprocessor 0 config register.
 365  */
 366 /* Generic bits.  */
 367 #define CONF_CM_CACHABLE_NO_WA          0
 368 #define CONF_CM_CACHABLE_WA             1
 369 #define CONF_CM_UNCACHED                2
 370 #define CONF_CM_CACHABLE_NONCOHERENT    3
 371 #define CONF_CM_CACHABLE_CE             4
 372 #define CONF_CM_CACHABLE_COW            5
 373 #define CONF_CM_CACHABLE_CUW            6
 374 #define CONF_CM_CACHABLE_ACCELERATED    7
 375 #define CONF_CM_CMASK                   7
 376 #define CONF_BE                 (_ULCAST_(1) << 15)
 377
 378 /* Bits common to various processors.  */
 379 #define CONF_CU                 (_ULCAST_(1) <<  3)
 380 #define CONF_DB                 (_ULCAST_(1) <<  4)
 381 #define CONF_IB                 (_ULCAST_(1) <<  5)
 382 #define CONF_DC                 (_ULCAST_(7) <<  6)
 383 #define CONF_IC                 (_ULCAST_(7) <<  9)
 384 #define CONF_EB                 (_ULCAST_(1) << 13)
 385 #define CONF_EM                 (_ULCAST_(1) << 14)
 386 #define CONF_SM                 (_ULCAST_(1) << 16)
 387 #define CONF_SC                 (_ULCAST_(1) << 17)
 388 #define CONF_EW                 (_ULCAST_(3) << 18)
 389 #define CONF_EP                 (_ULCAST_(15) << 24)
 390 #define CONF_EC                 (_ULCAST_(7) << 28)
 391 #define CONF_CM                 (_ULCAST_(1) << 31)
 392
 393 /* Bits specific to the R4xx0.  */
 394 #define R4K_CONF_SW             (_ULCAST_(1) << 20)
 395 #define R4K_CONF_SS             (_ULCAST_(1) << 21)
 396 #define R4K_CONF_SB             (_ULCAST_(3) << 22)
 397
 398 /* Bits specific to the R5000.  */
 399 #define R5K_CONF_SE             (_ULCAST_(1) << 12)
 400 #define R5K_CONF_SS             (_ULCAST_(3) << 20)
 401
 402 /* Bits specific to the RM7000.  */
 403 #define RM7K_CONF_SE            (_ULCAST_(1) <<  3)
 404 #define RM7K_CONF_TE            (_ULCAST_(1) << 12)
 405 #define RM7K_CONF_CLK           (_ULCAST_(1) << 16)
 406 #define RM7K_CONF_TC            (_ULCAST_(1) << 17)
 407 #define RM7K_CONF_SI            (_ULCAST_(3) << 20)
 408 #define RM7K_CONF_SC            (_ULCAST_(1) << 31)
 409
 410 /* Bits specific to the R10000.  */
 411 #define R10K_CONF_DN            (_ULCAST_(3) <<  3)
 412 #define R10K_CONF_CT            (_ULCAST_(1) <<  5)
 413 #define R10K_CONF_PE            (_ULCAST_(1) <<  6)
 414 #define R10K_CONF_PM            (_ULCAST_(3) <<  7)
 415 #define R10K_CONF_EC            (_ULCAST_(15) << 9)
 416 #define R10K_CONF_SB            (_ULCAST_(1) << 13)
 417 #define R10K_CONF_SK            (_ULCAST_(1) << 14)
 418 #define R10K_CONF_SS            (_ULCAST_(7) << 16)
 419 #define R10K_CONF_SC            (_ULCAST_(7) << 19)
 420 #define R10K_CONF_DC            (_ULCAST_(7) << 26)
 421 #define R10K_CONF_IC            (_ULCAST_(7) << 29)
 422
 423 /* Bits specific to the VR41xx.  */
 424 #define VR41_CONF_CS            (_ULCAST_(1) << 12)
 425 #define VR41_CONF_P4K           (_ULCAST_(1) << 13)
 426 #define VR41_CONF_BP            (_ULCAST_(1) << 16)
 427 #define VR41_CONF_M16           (_ULCAST_(1) << 20)
 428 #define VR41_CONF_AD            (_ULCAST_(1) << 23)
 429
 430 /* Bits specific to the R30xx.  */
 431 #define R30XX_CONF_FDM          (_ULCAST_(1) << 19)
 432 #define R30XX_CONF_REV          (_ULCAST_(1) << 22)
 433 #define R30XX_CONF_AC           (_ULCAST_(1) << 23)
 434 #define R30XX_CONF_RF           (_ULCAST_(1) << 24)
 435 #define R30XX_CONF_HALT         (_ULCAST_(1) << 25)
 436 #define R30XX_CONF_FPINT        (_ULCAST_(7) << 26)
 437 #define R30XX_CONF_DBR          (_ULCAST_(1) << 29)
 438 #define R30XX_CONF_SB           (_ULCAST_(1) << 30)
 439 #define R30XX_CONF_LOCK         (_ULCAST_(1) << 31)
 440
 441 /* Bits specific to the TX49.  */
 442 #define TX49_CONF_DC            (_ULCAST_(1) << 16)
 443 #define TX49_CONF_IC            (_ULCAST_(1) << 17)  /* conflict with CONF_SC */
 444 #define TX49_CONF_HALT          (_ULCAST_(1) << 18)
 445 #define TX49_CONF_CWFON         (_ULCAST_(1) << 27)
 446
 447 /* Bits specific to the MIPS32/64 PRA.  */
 448 #define MIPS_CONF_MT            (_ULCAST_(7) <<  7)
 449 #define MIPS_CONF_MT_TLB        (_ULCAST_(1) <<  7)
 450 #define MIPS_CONF_MT_FTLB       (_ULCAST_(4) <<  7)
 451 #define MIPS_CONF_AR            (_ULCAST_(7) << 10)
 452 #define MIPS_CONF_AT            (_ULCAST_(3) << 13)
 453 #define MIPS_CONF_IMPL          (_ULCAST_(0x1ff) << 16)
 454 #define MIPS_CONF_M             (_ULCAST_(1) << 31)
 455
 456 /*
 457  * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
 458  */
 459 #define MIPS_CONF1_FP           (_ULCAST_(1) <<  0)
 460 #define MIPS_CONF1_EP           (_ULCAST_(1) <<  1)
 461 #define MIPS_CONF1_CA           (_ULCAST_(1) <<  2)
 462 #define MIPS_CONF1_WR           (_ULCAST_(1) <<  3)
 463 #define MIPS_CONF1_PC           (_ULCAST_(1) <<  4)
 464 #define MIPS_CONF1_MD           (_ULCAST_(1) <<  5)
 465 #define MIPS_CONF1_C2           (_ULCAST_(1) <<  6)
 466 #define MIPS_CONF1_DA_SHF       7
 467 #define MIPS_CONF1_DA_SZ        3
 468 #define MIPS_CONF1_DA           (_ULCAST_(7) <<  7)
 469 #define MIPS_CONF1_DL_SHF       10
 470 #define MIPS_CONF1_DL_SZ        3
 471 #define MIPS_CONF1_DL           (_ULCAST_(7) << 10)
 472 #define MIPS_CONF1_DS_SHF       13
 473 #define MIPS_CONF1_DS_SZ        3
 474 #define MIPS_CONF1_DS           (_ULCAST_(7) << 13)
 475 #define MIPS_CONF1_IA_SHF       16
 476 #define MIPS_CONF1_IA_SZ        3
 477 #define MIPS_CONF1_IA           (_ULCAST_(7) << 16)
 478 #define MIPS_CONF1_IL_SHF       19
 479 #define MIPS_CONF1_IL_SZ        3
 480 #define MIPS_CONF1_IL           (_ULCAST_(7) << 19)
 481 #define MIPS_CONF1_IS_SHF       22
 482 #define MIPS_CONF1_IS_SZ        3
 483 #define MIPS_CONF1_IS           (_ULCAST_(7) << 22)
 484 #define MIPS_CONF1_TLBS_SHIFT   (25)
 485 #define MIPS_CONF1_TLBS_SIZE    (6)
 486 #define MIPS_CONF1_TLBS         (_ULCAST_(63) << MIPS_CONF1_TLBS_SHIFT)
 487
 488 #define MIPS_CONF2_SA           (_ULCAST_(15) << 0)
 489 #define MIPS_CONF2_SL           (_ULCAST_(15) << 4)
 490 #define MIPS_CONF2_SS           (_ULCAST_(15) << 8)
 491 #define MIPS_CONF2_SU           (_ULCAST_(15) << 12)
 492 #define MIPS_CONF2_TA           (_ULCAST_(15) << 16)
 493 #define MIPS_CONF2_TL           (_ULCAST_(15) << 20)
 494 #define MIPS_CONF2_TS           (_ULCAST_(15) << 24)
 495 #define MIPS_CONF2_TU           (_ULCAST_(7) << 28)
 496
 497 #define MIPS_CONF3_TL           (_ULCAST_(1) <<  0)
 498 #define MIPS_CONF3_SM           (_ULCAST_(1) <<  1)
 499 #define MIPS_CONF3_MT           (_ULCAST_(1) <<  2)
 500 #define MIPS_CONF3_CDMM         (_ULCAST_(1) <<  3)
 501 #define MIPS_CONF3_SP           (_ULCAST_(1) <<  4)
 502 #define MIPS_CONF3_VINT         (_ULCAST_(1) <<  5)
 503 #define MIPS_CONF3_VEIC         (_ULCAST_(1) <<  6)
 504 #define MIPS_CONF3_LPA          (_ULCAST_(1) <<  7)
 505 #define MIPS_CONF3_ITL          (_ULCAST_(1) <<  8)
 506 #define MIPS_CONF3_CTXTC        (_ULCAST_(1) <<  9)
 507 #define MIPS_CONF3_DSP          (_ULCAST_(1) << 10)
 508 #define MIPS_CONF3_DSP2P        (_ULCAST_(1) << 11)
 509 #define MIPS_CONF3_RXI          (_ULCAST_(1) << 12)
 510 #define MIPS_CONF3_ULRI         (_ULCAST_(1) << 13)
 511 #define MIPS_CONF3_ISA          (_ULCAST_(3) << 14)
 512 #define MIPS_CONF3_ISA_OE       (_ULCAST_(1) << 16)
 513 #define MIPS_CONF3_MCU          (_ULCAST_(1) << 17)
 514 #define MIPS_CONF3_MMAR         (_ULCAST_(7) << 18)
 515 #define MIPS_CONF3_IPLW         (_ULCAST_(3) << 21)
 516 #define MIPS_CONF3_VZ           (_ULCAST_(1) << 23)
 517 #define MIPS_CONF3_PW           (_ULCAST_(1) << 24)
 518 #define MIPS_CONF3_SC           (_ULCAST_(1) << 25)
 519 #define MIPS_CONF3_BI           (_ULCAST_(1) << 26)
 520 #define MIPS_CONF3_BP           (_ULCAST_(1) << 27)
 521 #define MIPS_CONF3_MSA          (_ULCAST_(1) << 28)
 522 #define MIPS_CONF3_CMGCR        (_ULCAST_(1) << 29)
 523 #define MIPS_CONF3_BPG          (_ULCAST_(1) << 30)
 524
 525 #define MIPS_CONF4_MMUSIZEEXT_SHIFT     (0)
 526 #define MIPS_CONF4_MMUSIZEEXT   (_ULCAST_(255) << 0)
 527 #define MIPS_CONF4_FTLBSETS_SHIFT       (0)
 528 #define MIPS_CONF4_FTLBSETS     (_ULCAST_(15) << MIPS_CONF4_FTLBSETS_SHIFT)
 529 #define MIPS_CONF4_FTLBWAYS_SHIFT       (4)
 530 #define MIPS_CONF4_FTLBWAYS     (_ULCAST_(15) << MIPS_CONF4_FTLBWAYS_SHIFT)
 531 #define MIPS_CONF4_FTLBPAGESIZE_SHIFT   (8)
 532 /* bits 10:8 in FTLB-only configurations */
 533 #define MIPS_CONF4_FTLBPAGESIZE (_ULCAST_(7) << MIPS_CONF4_FTLBPAGESIZE_SHIFT)
 534 /* bits 12:8 in VTLB-FTLB only configurations */
 535 #define MIPS_CONF4_VFTLBPAGESIZE (_ULCAST_(31) << MIPS_CONF4_FTLBPAGESIZE_SHIFT)
 536 #define MIPS_CONF4_MMUEXTDEF    (_ULCAST_(3) << 14)
 537 #define MIPS_CONF4_MMUEXTDEF_MMUSIZEEXT (_ULCAST_(1) << 14)
 538 #define MIPS_CONF4_MMUEXTDEF_FTLBSIZEEXT        (_ULCAST_(2) << 14)
 539 #define MIPS_CONF4_MMUEXTDEF_VTLBSIZEEXT        (_ULCAST_(3) << 14)
 540 #define MIPS_CONF4_KSCREXIST    (_ULCAST_(255) << 16)
 541 #define MIPS_CONF4_VTLBSIZEEXT_SHIFT    (24)
 542 #define MIPS_CONF4_VTLBSIZEEXT  (_ULCAST_(15) << MIPS_CONF4_VTLBSIZEEXT_SHIFT)
 543 #define MIPS_CONF4_AE           (_ULCAST_(1) << 28)
 544 #define MIPS_CONF4_IE           (_ULCAST_(3) << 29)
 545 #define MIPS_CONF4_TLBINV       (_ULCAST_(2) << 29)
 546
 547 #define MIPS_CONF5_NF           (_ULCAST_(1) << 0)
 548 #define MIPS_CONF5_UFR          (_ULCAST_(1) << 2)
 549 #define MIPS_CONF5_MRP          (_ULCAST_(1) << 3)
 550 #define MIPS_CONF5_LLB          (_ULCAST_(1) << 4)
 551 #define MIPS_CONF5_MVH          (_ULCAST_(1) << 5)
 552 #define MIPS_CONF5_FRE          (_ULCAST_(1) << 8)
 553 #define MIPS_CONF5_UFE          (_ULCAST_(1) << 9)
 554 #define MIPS_CONF5_MSAEN        (_ULCAST_(1) << 27)
 555 #define MIPS_CONF5_EVA          (_ULCAST_(1) << 28)
 556 #define MIPS_CONF5_CV           (_ULCAST_(1) << 29)
 557 #define MIPS_CONF5_K            (_ULCAST_(1) << 30)
 558
 559 #define MIPS_CONF6_SYND         (_ULCAST_(1) << 13)
 560 /* proAptiv FTLB on/off bit */
 561 #define MIPS_CONF6_FTLBEN       (_ULCAST_(1) << 15)
 562 /* FTLB probability bits */
 563 #define MIPS_CONF6_FTLBP_SHIFT  (16)
 564
 565 #define MIPS_CONF7_WII          (_ULCAST_(1) << 31)
 566
 567 #define MIPS_CONF7_RPS          (_ULCAST_(1) << 2)
 568
 569 #define MIPS_CONF7_IAR          (_ULCAST_(1) << 10)
 570 #define MIPS_CONF7_AR           (_ULCAST_(1) << 16)
 571 /* FTLB probability bits for R6 */
 572 #define MIPS_CONF7_FTLBP_SHIFT  (18)
 573
 574 /* MAAR bit definitions */
 575 #define MIPS_MAAR_ADDR          ((BIT_ULL(BITS_PER_LONG - 12) - 1) << 12)
 576 #define MIPS_MAAR_ADDR_SHIFT    12
 577 #define MIPS_MAAR_S             (_ULCAST_(1) << 1)
 578 #define MIPS_MAAR_V             (_ULCAST_(1) << 0)
 579
 580 /* CMGCRBase bit definitions */
 581 #define MIPS_CMGCRB_BASE        11
 582 #define MIPS_CMGCRF_BASE        (~_ULCAST_((1 << MIPS_CMGCRB_BASE) - 1))
 583
 584 /*
 585  * Bits in the MIPS32 Memory Segmentation registers.
 586  */
 587 #define MIPS_SEGCFG_PA_SHIFT    9
 588 #define MIPS_SEGCFG_PA          (_ULCAST_(127) << MIPS_SEGCFG_PA_SHIFT)
 589 #define MIPS_SEGCFG_AM_SHIFT    4
 590 #define MIPS_SEGCFG_AM          (_ULCAST_(7) << MIPS_SEGCFG_AM_SHIFT)
 591 #define MIPS_SEGCFG_EU_SHIFT    3
 592 #define MIPS_SEGCFG_EU          (_ULCAST_(1) << MIPS_SEGCFG_EU_SHIFT)
 593 #define MIPS_SEGCFG_C_SHIFT     0
 594 #define MIPS_SEGCFG_C           (_ULCAST_(7) << MIPS_SEGCFG_C_SHIFT)
 595
 596 #define MIPS_SEGCFG_UUSK        _ULCAST_(7)
 597 #define MIPS_SEGCFG_USK         _ULCAST_(5)
 598 #define MIPS_SEGCFG_MUSUK       _ULCAST_(4)
 599 #define MIPS_SEGCFG_MUSK        _ULCAST_(3)
 600 #define MIPS_SEGCFG_MSK         _ULCAST_(2)
 601 #define MIPS_SEGCFG_MK          _ULCAST_(1)
 602 #define MIPS_SEGCFG_UK          _ULCAST_(0)
 603
 604 #define MIPS_PWFIELD_GDI_SHIFT  24
 605 #define MIPS_PWFIELD_GDI_MASK   0x3f000000
 606 #define MIPS_PWFIELD_UDI_SHIFT  18
 607 #define MIPS_PWFIELD_UDI_MASK   0x00fc0000
 608 #define MIPS_PWFIELD_MDI_SHIFT  12
 609 #define MIPS_PWFIELD_MDI_MASK   0x0003f000
 610 #define MIPS_PWFIELD_PTI_SHIFT  6
 611 #define MIPS_PWFIELD_PTI_MASK   0x00000fc0
 612 #define MIPS_PWFIELD_PTEI_SHIFT 0
 613 #define MIPS_PWFIELD_PTEI_MASK  0x0000003f
 614
 615 #define MIPS_PWSIZE_GDW_SHIFT   24
 616 #define MIPS_PWSIZE_GDW_MASK    0x3f000000
 617 #define MIPS_PWSIZE_UDW_SHIFT   18
 618 #define MIPS_PWSIZE_UDW_MASK    0x00fc0000
 619 #define MIPS_PWSIZE_MDW_SHIFT   12
 620 #define MIPS_PWSIZE_MDW_MASK    0x0003f000
 621 #define MIPS_PWSIZE_PTW_SHIFT   6
 622 #define MIPS_PWSIZE_PTW_MASK    0x00000fc0
 623 #define MIPS_PWSIZE_PTEW_SHIFT  0
 624 #define MIPS_PWSIZE_PTEW_MASK   0x0000003f
 625
 626 #define MIPS_PWCTL_PWEN_SHIFT   31
 627 #define MIPS_PWCTL_PWEN_MASK    0x80000000
 628 #define MIPS_PWCTL_DPH_SHIFT    7
 629 #define MIPS_PWCTL_DPH_MASK     0x00000080
 630 #define MIPS_PWCTL_HUGEPG_SHIFT 6
 631 #define MIPS_PWCTL_HUGEPG_MASK  0x00000060
 632 #define MIPS_PWCTL_PSN_SHIFT    0
 633 #define MIPS_PWCTL_PSN_MASK     0x0000003f
 634
 635 /* CDMMBase register bit definitions */
 636 #define MIPS_CDMMBASE_SIZE_SHIFT 0
 637 #define MIPS_CDMMBASE_SIZE      (_ULCAST_(511) << MIPS_CDMMBASE_SIZE_SHIFT)
 638 #define MIPS_CDMMBASE_CI        (_ULCAST_(1) << 9)
 639 #define MIPS_CDMMBASE_EN        (_ULCAST_(1) << 10)
 640 #define MIPS_CDMMBASE_ADDR_SHIFT 11
 641 #define MIPS_CDMMBASE_ADDR_START 15
 642
 643 /*
 644  * Bitfields in the TX39 family CP0 Configuration Register 3
 645  */
 646 #define TX39_CONF_ICS_SHIFT     19
 647 #define TX39_CONF_ICS_MASK      0x00380000
 648 #define TX39_CONF_ICS_1KB       0x00000000
 649 #define TX39_CONF_ICS_2KB       0x00080000
 650 #define TX39_CONF_ICS_4KB       0x00100000
 651 #define TX39_CONF_ICS_8KB       0x00180000
 652 #define TX39_CONF_ICS_16KB      0x00200000
 653
 654 #define TX39_CONF_DCS_SHIFT     16
 655 #define TX39_CONF_DCS_MASK      0x00070000
 656 #define TX39_CONF_DCS_1KB       0x00000000
 657 #define TX39_CONF_DCS_2KB       0x00010000
 658 #define TX39_CONF_DCS_4KB       0x00020000
 659 #define TX39_CONF_DCS_8KB       0x00030000
 660 #define TX39_CONF_DCS_16KB      0x00040000
 661
 662 #define TX39_CONF_CWFON         0x00004000
 663 #define TX39_CONF_WBON          0x00002000
 664 #define TX39_CONF_RF_SHIFT      10
 665 #define TX39_CONF_RF_MASK       0x00000c00
 666 #define TX39_CONF_DOZE          0x00000200
 667 #define TX39_CONF_HALT          0x00000100
 668 #define TX39_CONF_LOCK          0x00000080
 669 #define TX39_CONF_ICE           0x00000020
 670 #define TX39_CONF_DCE           0x00000010
 671 #define TX39_CONF_IRSIZE_SHIFT  2
 672 #define TX39_CONF_IRSIZE_MASK   0x0000000c
 673 #define TX39_CONF_DRSIZE_SHIFT  0
 674 #define TX39_CONF_DRSIZE_MASK   0x00000003
 675
 676 /*
 677  * Interesting Bits in the R10K CP0 Branch Diagnostic Register
 678  */
 679 /* Disable Branch Target Address Cache */
 680 #define R10K_DIAG_D_BTAC        (_ULCAST_(1) << 27)
 681 /* Enable Branch Prediction Global History */
 682 #define R10K_DIAG_E_GHIST       (_ULCAST_(1) << 26)
 683 /* Disable Branch Return Cache */
 684 #define R10K_DIAG_D_BRC         (_ULCAST_(1) << 22)
 685
 686 /*
 687  * Coprocessor 1 (FPU) register names
 688  */
 689 #define CP1_REVISION    $0
 690 #define CP1_UFR         $1
 691 #define CP1_UNFR        $4
 692 #define CP1_FCCR        $25
 693 #define CP1_FEXR        $26
 694 #define CP1_FENR        $28
 695 #define CP1_STATUS      $31
 696
 697
 698 /*
 699  * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
 700  */
 701 #define MIPS_FPIR_S             (_ULCAST_(1) << 16)
 702 #define MIPS_FPIR_D             (_ULCAST_(1) << 17)
 703 #define MIPS_FPIR_PS            (_ULCAST_(1) << 18)
 704 #define MIPS_FPIR_3D            (_ULCAST_(1) << 19)
 705 #define MIPS_FPIR_W             (_ULCAST_(1) << 20)
 706 #define MIPS_FPIR_L             (_ULCAST_(1) << 21)
 707 #define MIPS_FPIR_F64           (_ULCAST_(1) << 22)
 708 #define MIPS_FPIR_HAS2008       (_ULCAST_(1) << 23)
 709 #define MIPS_FPIR_UFRP          (_ULCAST_(1) << 28)
 710 #define MIPS_FPIR_FREP          (_ULCAST_(1) << 29)
 711
 712 /*
 713  * Bits in the MIPS32/64 coprocessor 1 (FPU) condition codes register.
 714  */
 715 #define MIPS_FCCR_CONDX_S       0
 716 #define MIPS_FCCR_CONDX         (_ULCAST_(255) << MIPS_FCCR_CONDX_S)
 717 #define MIPS_FCCR_COND0_S       0
 718 #define MIPS_FCCR_COND0         (_ULCAST_(1) << MIPS_FCCR_COND0_S)
 719 #define MIPS_FCCR_COND1_S       1
 720 #define MIPS_FCCR_COND1         (_ULCAST_(1) << MIPS_FCCR_COND1_S)
 721 #define MIPS_FCCR_COND2_S       2
 722 #define MIPS_FCCR_COND2         (_ULCAST_(1) << MIPS_FCCR_COND2_S)
 723 #define MIPS_FCCR_COND3_S       3
 724 #define MIPS_FCCR_COND3         (_ULCAST_(1) << MIPS_FCCR_COND3_S)
 725 #define MIPS_FCCR_COND4_S       4
 726 #define MIPS_FCCR_COND4         (_ULCAST_(1) << MIPS_FCCR_COND4_S)
 727 #define MIPS_FCCR_COND5_S       5
 728 #define MIPS_FCCR_COND5         (_ULCAST_(1) << MIPS_FCCR_COND5_S)
 729 #define MIPS_FCCR_COND6_S       6
 730 #define MIPS_FCCR_COND6         (_ULCAST_(1) << MIPS_FCCR_COND6_S)
 731 #define MIPS_FCCR_COND7_S       7
 732 #define MIPS_FCCR_COND7         (_ULCAST_(1) << MIPS_FCCR_COND7_S)
 733
 734 /*
 735  * Bits in the MIPS32/64 coprocessor 1 (FPU) enables register.
 736  */
 737 #define MIPS_FENR_FS_S          2
 738 #define MIPS_FENR_FS            (_ULCAST_(1) << MIPS_FENR_FS_S)
 739
 740 /*
 741  * FPU Status Register Values
 742  */
 743 #define FPU_CSR_COND_S  23                                      /* $fcc0 */
 744 #define FPU_CSR_COND    (_ULCAST_(1) << FPU_CSR_COND_S)
 745
 746 #define FPU_CSR_FS_S    24              /* flush denormalised results to 0 */
 747 #define FPU_CSR_FS      (_ULCAST_(1) << FPU_CSR_FS_S)
 748
 749 #define FPU_CSR_CONDX_S 25                                      /* $fcc[7:1] */
 750 #define FPU_CSR_CONDX   (_ULCAST_(127) << FPU_CSR_CONDX_S)
 751 #define FPU_CSR_COND1_S 25                                      /* $fcc1 */
 752 #define FPU_CSR_COND1   (_ULCAST_(1) << FPU_CSR_COND1_S)
 753 #define FPU_CSR_COND2_S 26                                      /* $fcc2 */
 754 #define FPU_CSR_COND2   (_ULCAST_(1) << FPU_CSR_COND2_S)
 755 #define FPU_CSR_COND3_S 27                                      /* $fcc3 */
 756 #define FPU_CSR_COND3   (_ULCAST_(1) << FPU_CSR_COND3_S)
 757 #define FPU_CSR_COND4_S 28                                      /* $fcc4 */
 758 #define FPU_CSR_COND4   (_ULCAST_(1) << FPU_CSR_COND4_S)
 759 #define FPU_CSR_COND5_S 29                                      /* $fcc5 */
 760 #define FPU_CSR_COND5   (_ULCAST_(1) << FPU_CSR_COND5_S)
 761 #define FPU_CSR_COND6_S 30                                      /* $fcc6 */
 762 #define FPU_CSR_COND6   (_ULCAST_(1) << FPU_CSR_COND6_S)
 763 #define FPU_CSR_COND7_S 31                                      /* $fcc7 */
 764 #define FPU_CSR_COND7   (_ULCAST_(1) << FPU_CSR_COND7_S)
 765
 766 /*
 767  * Bits 22:20 of the FPU Status Register will be read as 0,
 768  * and should be written as zero.
 769  */
 770 #define FPU_CSR_RSVD    (_ULCAST_(7) << 20)
 771
 772 #define FPU_CSR_ABS2008 (_ULCAST_(1) << 19)
 773 #define FPU_CSR_NAN2008 (_ULCAST_(1) << 18)
 774
 775 /*
 776  * X the exception cause indicator
 777  * E the exception enable
 778  * S the sticky/flag bit
 779 */
 780 #define FPU_CSR_ALL_X   0x0003f000
 781 #define FPU_CSR_UNI_X   0x00020000
 782 #define FPU_CSR_INV_X   0x00010000
 783 #define FPU_CSR_DIV_X   0x00008000
 784 #define FPU_CSR_OVF_X   0x00004000
 785 #define FPU_CSR_UDF_X   0x00002000
 786 #define FPU_CSR_INE_X   0x00001000
 787
 788 #define FPU_CSR_ALL_E   0x00000f80
 789 #define FPU_CSR_INV_E   0x00000800
 790 #define FPU_CSR_DIV_E   0x00000400
 791 #define FPU_CSR_OVF_E   0x00000200
 792 #define FPU_CSR_UDF_E   0x00000100
 793 #define FPU_CSR_INE_E   0x00000080
 794
 795 #define FPU_CSR_ALL_S   0x0000007c
 796 #define FPU_CSR_INV_S   0x00000040
 797 #define FPU_CSR_DIV_S   0x00000020
 798 #define FPU_CSR_OVF_S   0x00000010
 799 #define FPU_CSR_UDF_S   0x00000008
 800 #define FPU_CSR_INE_S   0x00000004
 801
 802 /* Bits 0 and 1 of FPU Status Register specify the rounding mode */
 803 #define FPU_CSR_RM      0x00000003
 804 #define FPU_CSR_RN      0x0     /* nearest */
 805 #define FPU_CSR_RZ      0x1     /* towards zero */
 806 #define FPU_CSR_RU      0x2     /* towards +Infinity */
 807 #define FPU_CSR_RD      0x3     /* towards -Infinity */
 808
 809
 810 #ifndef __ASSEMBLY__
 811
 812 /*
 813  * Macros for handling the ISA mode bit for MIPS16 and microMIPS.
 814  */
 815 #if defined(CONFIG_SYS_SUPPORTS_MIPS16) || \
 816         defined(CONFIG_SYS_SUPPORTS_MICROMIPS)
 817 #define get_isa16_mode(x)               ((x) & 0x1)
 818 #define msk_isa16_mode(x)               ((x) & ~0x1)
 819 #define set_isa16_mode(x)               do { (x) |= 0x1; } while (0)
 820 #else
 821 #define get_isa16_mode(x)               0
 822 #define msk_isa16_mode(x)               (x)
 823 #define set_isa16_mode(x)               do { } while (0)
 824 #endif
 825
 826 /*
 827  * microMIPS instructions can be 16-bit or 32-bit in length. This
 828  * returns a 1 if the instruction is 16-bit and a 0 if 32-bit.
 829  */
 830 static inline int mm_insn_16bit(u16 insn)
 831 {
 832         u16 opcode = (insn >> 10) & 0x7;
 833
 834         return (opcode >= 1 && opcode <= 3) ? 1 : 0;
 835 }
 836
 837 /*
 838  * TLB Invalidate Flush
 839  */
 840 static inline void tlbinvf(void)
 841 {
 842         __asm__ __volatile__(
 843                 ".set push\n\t"
 844                 ".set noreorder\n\t"
 845                 ".word 0x42000004\n\t" /* tlbinvf */
 846                 ".set pop");
 847 }
 848
 849
 850 /*
 851  * Functions to access the R10000 performance counters.  These are basically
 852  * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
 853  * performance counter number encoded into bits 1 ... 5 of the instruction.
 854  * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
 855  * disassembler these will look like an access to sel 0 or 1.
 856  */
 857 #define read_r10k_perf_cntr(counter)                            \
 858 ({                                                              \
 859         unsigned int __res;                                     \
 860         __asm__ __volatile__(                                   \
 861         "mfpc\t%0, %1"                                          \
 862         : "=r" (__res)                                          \
 863         : "i" (counter));                                       \
 864                                                                 \
 865         __res;                                                  \
 866 })
 867
 868 #define write_r10k_perf_cntr(counter,val)                       \
 869 do {                                                            \
 870         __asm__ __volatile__(                                   \
 871         "mtpc\t%0, %1"                                          \
 872         :                                                       \
 873         : "r" (val), "i" (counter));                            \
 874 } while (0)
 875
 876 #define read_r10k_perf_event(counter)                           \
 877 ({                                                              \
 878         unsigned int __res;                                     \
 879         __asm__ __volatile__(                                   \
 880         "mfps\t%0, %1"                                          \
 881         : "=r" (__res)                                          \
 882         : "i" (counter));                                       \
 883                                                                 \
 884         __res;                                                  \
 885 })
 886
 887 #define write_r10k_perf_cntl(counter,val)                       \
 888 do {                                                            \
 889         __asm__ __volatile__(                                   \
 890         "mtps\t%0, %1"                                          \
 891         :                                                       \
 892         : "r" (val), "i" (counter));                            \
 893 } while (0)
 894
 895
 896 /*
 897  * Macros to access the system control coprocessor
 898  */
 899
 900 #define __read_32bit_c0_register(source, sel)                           \
 901 ({ unsigned int __res;                                                  \
 902         if (sel == 0)                                                   \
 903                 __asm__ __volatile__(                                   \
 904                         "mfc0\t%0, " #source "\n\t"                     \
 905                         : "=r" (__res));                                \
 906         else                                                            \
 907                 __asm__ __volatile__(                                   \
 908                         ".set\tmips32\n\t"                              \
 909                         "mfc0\t%0, " #source ", " #sel "\n\t"           \
 910                         ".set\tmips0\n\t"                               \
 911                         : "=r" (__res));                                \
 912         __res;                                                          \
 913 })
 914
 915 #define __read_64bit_c0_register(source, sel)                           \
 916 ({ unsigned long long __res;                                            \
 917         if (sizeof(unsigned long) == 4)                                 \
 918                 __res = __read_64bit_c0_split(source, sel);             \
 919         else if (sel == 0)                                              \
 920                 __asm__ __volatile__(                                   \
 921                         ".set\tmips3\n\t"                               \
 922                         "dmfc0\t%0, " #source "\n\t"                    \
 923                         ".set\tmips0"                                   \
 924                         : "=r" (__res));                                \
 925         else                                                            \
 926                 __asm__ __volatile__(                                   \
 927                         ".set\tmips64\n\t"                              \
 928                         "dmfc0\t%0, " #source ", " #sel "\n\t"          \
 929                         ".set\tmips0"                                   \
 930                         : "=r" (__res));                                \
 931         __res;                                                          \
 932 })
 933
 934 #define __write_32bit_c0_register(register, sel, value)                 \
 935 do {                                                                    \
 936         if (sel == 0)                                                   \
 937                 __asm__ __volatile__(                                   \
 938                         "mtc0\t%z0, " #register "\n\t"                  \
 939                         : : "Jr" ((unsigned int)(value)));              \
 940         else                                                            \
 941                 __asm__ __volatile__(                                   \
 942                         ".set\tmips32\n\t"                              \
 943                         "mtc0\t%z0, " #register ", " #sel "\n\t"        \
 944                         ".set\tmips0"                                   \
 945                         : : "Jr" ((unsigned int)(value)));              \
 946 } while (0)
 947
 948 #define __write_64bit_c0_register(register, sel, value)                 \
 949 do {                                                                    \
 950         if (sizeof(unsigned long) == 4)                                 \
 951                 __write_64bit_c0_split(register, sel, value);           \
 952         else if (sel == 0)                                              \
 953                 __asm__ __volatile__(                                   \
 954                         ".set\tmips3\n\t"                               \
 955                         "dmtc0\t%z0, " #register "\n\t"                 \
 956                         ".set\tmips0"                                   \
 957                         : : "Jr" (value));                              \
 958         else                                                            \
 959                 __asm__ __volatile__(                                   \
 960                         ".set\tmips64\n\t"                              \
 961                         "dmtc0\t%z0, " #register ", " #sel "\n\t"       \
 962                         ".set\tmips0"                                   \
 963                         : : "Jr" (value));                              \
 964 } while (0)
 965
 966 #define __read_ulong_c0_register(reg, sel)                              \
 967         ((sizeof(unsigned long) == 4) ?                                 \
 968         (unsigned long) __read_32bit_c0_register(reg, sel) :            \
 969         (unsigned long) __read_64bit_c0_register(reg, sel))
 970
 971 #define __write_ulong_c0_register(reg, sel, val)                        \
 972 do {                                                                    \
 973         if (sizeof(unsigned long) == 4)                                 \
 974                 __write_32bit_c0_register(reg, sel, val);               \
 975         else                                                            \
 976                 __write_64bit_c0_register(reg, sel, val);               \
 977 } while (0)
 978
 979 /*
 980  * On RM7000/RM9000 these are uses to access cop0 set 1 registers
 981  */
 982 #define __read_32bit_c0_ctrl_register(source)                           \
 983 ({ unsigned int __res;                                                  \
 984         __asm__ __volatile__(                                           \
 985                 "cfc0\t%0, " #source "\n\t"                             \
 986                 : "=r" (__res));                                        \
 987         __res;                                                          \
 988 })
 989
 990 #define __write_32bit_c0_ctrl_register(register, value)                 \
 991 do {                                                                    \
 992         __asm__ __volatile__(                                           \
 993                 "ctc0\t%z0, " #register "\n\t"                          \
 994                 : : "Jr" ((unsigned int)(value)));                      \
 995 } while (0)
 996
 997 /*
 998  * These versions are only needed for systems with more than 38 bits of
 999  * physical address space running the 32-bit kernel.  That's none atm :-)
1000  */
1001 #define __read_64bit_c0_split(source, sel)                              \
1002 ({                                                                      \
1003         unsigned long long __val;                                       \
1004         unsigned long __flags;                                          \
1005                                                                         \
1006         local_irq_save(__flags);                                        \
1007         if (sel == 0)                                                   \
1008                 __asm__ __volatile__(                                   \
1009                         ".set\tmips64\n\t"                              \
1010                         "dmfc0\t%M0, " #source "\n\t"                   \
1011                         "dsll\t%L0, %M0, 32\n\t"                        \
1012                         "dsra\t%M0, %M0, 32\n\t"                        \
1013                         "dsra\t%L0, %L0, 32\n\t"                        \
1014                         ".set\tmips0"                                   \
1015                         : "=r" (__val));                                \
1016         else                                                            \
1017                 __asm__ __volatile__(                                   \
1018                         ".set\tmips64\n\t"                              \
1019                         "dmfc0\t%M0, " #source ", " #sel "\n\t"         \
1020                         "dsll\t%L0, %M0, 32\n\t"                        \
1021                         "dsra\t%M0, %M0, 32\n\t"                        \
1022                         "dsra\t%L0, %L0, 32\n\t"                        \
1023                         ".set\tmips0"                                   \
1024                         : "=r" (__val));                                \
1025         local_irq_restore(__flags);                                     \
1026                                                                         \
1027         __val;                                                          \
1028 })
1029
1030 #define __write_64bit_c0_split(source, sel, val)                        \
1031 do {                                                                    \
1032         unsigned long __flags;                                          \
1033                                                                         \
1034         local_irq_save(__flags);                                        \
1035         if (sel == 0)                                                   \
1036                 __asm__ __volatile__(                                   \
1037                         ".set\tmips64\n\t"                              \
1038                         "dsll\t%L0, %L0, 32\n\t"                        \
1039                         "dsrl\t%L0, %L0, 32\n\t"                        \
1040                         "dsll\t%M0, %M0, 32\n\t"                        \
1041                         "or\t%L0, %L0, %M0\n\t"                         \
1042                         "dmtc0\t%L0, " #source "\n\t"                   \
1043                         ".set\tmips0"                                   \
1044                         : : "r" (val));                                 \
1045         else                                                            \
1046                 __asm__ __volatile__(                                   \
1047                         ".set\tmips64\n\t"                              \
1048                         "dsll\t%L0, %L0, 32\n\t"                        \
1049                         "dsrl\t%L0, %L0, 32\n\t"                        \
1050                         "dsll\t%M0, %M0, 32\n\t"                        \
1051                         "or\t%L0, %L0, %M0\n\t"                         \
1052                         "dmtc0\t%L0, " #source ", " #sel "\n\t"         \
1053                         ".set\tmips0"                                   \
1054                         : : "r" (val));                                 \
1055         local_irq_restore(__flags);                                     \
1056 } while (0)
1057
1058 #define __readx_32bit_c0_register(source)                               \
1059 ({                                                                      \
1060         unsigned int __res;                                             \
1061                                                                         \
1062         __asm__ __volatile__(                                           \
1063         "       .set    push                                    \n"     \
1064         "       .set    noat                                    \n"     \
1065         "       .set    mips32r2                                \n"     \
1066         "       .insn                                           \n"     \
1067         "       # mfhc0 $1, %1                                  \n"     \
1068         "       .word   (0x40410000 | ((%1 & 0x1f) << 11))      \n"     \
1069         "       move    %0, $1                                  \n"     \
1070         "       .set    pop                                     \n"     \
1071         : "=r" (__res)                                                  \
1072         : "i" (source));                                                \
1073         __res;                                                          \
1074 })
1075
1076 #define __writex_32bit_c0_register(register, value)                     \
1077 ({                                                                      \
1078         __asm__ __volatile__(                                           \
1079         "       .set    push                                    \n"     \
1080         "       .set    noat                                    \n"     \
1081         "       .set    mips32r2                                \n"     \
1082         "       move    $1, %0                                  \n"     \
1083         "       # mthc0 $1, %1                                  \n"     \
1084         "       .insn                                           \n"     \
1085         "       .word   (0x40c10000 | ((%1 & 0x1f) << 11))      \n"     \
1086         "       .set    pop                                     \n"     \
1087         :                                                               \
1088         : "r" (value), "i" (register));                                 \
1089 })
1090
1091 #define read_c0_index()         __read_32bit_c0_register($0, 0)
1092 #define write_c0_index(val)     __write_32bit_c0_register($0, 0, val)
1093
1094 #define read_c0_random()        __read_32bit_c0_register($1, 0)
1095 #define write_c0_random(val)    __write_32bit_c0_register($1, 0, val)
1096
1097 #define read_c0_entrylo0()      __read_ulong_c0_register($2, 0)
1098 #define write_c0_entrylo0(val)  __write_ulong_c0_register($2, 0, val)
1099
1100 #define readx_c0_entrylo0()     __readx_32bit_c0_register(2)
1101 #define writex_c0_entrylo0(val) __writex_32bit_c0_register(2, val)
1102
1103 #define read_c0_entrylo1()      __read_ulong_c0_register($3, 0)
1104 #define write_c0_entrylo1(val)  __write_ulong_c0_register($3, 0, val)
1105
1106 #define readx_c0_entrylo1()     __readx_32bit_c0_register(3)
1107 #define writex_c0_entrylo1(val) __writex_32bit_c0_register(3, val)
1108
1109 #define read_c0_conf()          __read_32bit_c0_register($3, 0)
1110 #define write_c0_conf(val)      __write_32bit_c0_register($3, 0, val)
1111
1112 #define read_c0_context()       __read_ulong_c0_register($4, 0)
1113 #define write_c0_context(val)   __write_ulong_c0_register($4, 0, val)
1114
1115 #define read_c0_userlocal()     __read_ulong_c0_register($4, 2)
1116 #define write_c0_userlocal(val) __write_ulong_c0_register($4, 2, val)
1117
1118 #define read_c0_pagemask()      __read_32bit_c0_register($5, 0)
1119 #define write_c0_pagemask(val)  __write_32bit_c0_register($5, 0, val)
1120
1121 #define read_c0_pagegrain()     __read_32bit_c0_register($5, 1)
1122 #define write_c0_pagegrain(val) __write_32bit_c0_register($5, 1, val)
1123
1124 #define read_c0_wired()         __read_32bit_c0_register($6, 0)
1125 #define write_c0_wired(val)     __write_32bit_c0_register($6, 0, val)
1126
1127 #define read_c0_info()          __read_32bit_c0_register($7, 0)
1128
1129 #define read_c0_cache()         __read_32bit_c0_register($7, 0) /* TX39xx */
1130 #define write_c0_cache(val)     __write_32bit_c0_register($7, 0, val)
1131
1132 #define read_c0_badvaddr()      __read_ulong_c0_register($8, 0)
1133 #define write_c0_badvaddr(val)  __write_ulong_c0_register($8, 0, val)
1134
1135 #define read_c0_count()         __read_32bit_c0_register($9, 0)
1136 #define write_c0_count(val)     __write_32bit_c0_register($9, 0, val)
1137
1138 #define read_c0_count2()        __read_32bit_c0_register($9, 6) /* pnx8550 */
1139 #define write_c0_count2(val)    __write_32bit_c0_register($9, 6, val)
1140
1141 #define read_c0_count3()        __read_32bit_c0_register($9, 7) /* pnx8550 */
1142 #define write_c0_count3(val)    __write_32bit_c0_register($9, 7, val)
1143
1144 #define read_c0_entryhi()       __read_ulong_c0_register($10, 0)
1145 #define write_c0_entryhi(val)   __write_ulong_c0_register($10, 0, val)
1146
1147 #define read_c0_compare()       __read_32bit_c0_register($11, 0)
1148 #define write_c0_compare(val)   __write_32bit_c0_register($11, 0, val)
1149
1150 #define read_c0_compare2()      __read_32bit_c0_register($11, 6) /* pnx8550 */
1151 #define write_c0_compare2(val)  __write_32bit_c0_register($11, 6, val)
1152
1153 #define read_c0_compare3()      __read_32bit_c0_register($11, 7) /* pnx8550 */
1154 #define write_c0_compare3(val)  __write_32bit_c0_register($11, 7, val)
1155
1156 #define read_c0_status()        __read_32bit_c0_register($12, 0)
1157
1158 #define write_c0_status(val)    __write_32bit_c0_register($12, 0, val)
1159
1160 #define read_c0_cause()         __read_32bit_c0_register($13, 0)
1161 #define write_c0_cause(val)     __write_32bit_c0_register($13, 0, val)
1162
1163 #define read_c0_epc()           __read_ulong_c0_register($14, 0)
1164 #define write_c0_epc(val)       __write_ulong_c0_register($14, 0, val)
1165
1166 #define read_c0_prid()          __read_32bit_c0_register($15, 0)
1167
1168 #define read_c0_cmgcrbase()     __read_ulong_c0_register($15, 3)
1169
1170 #define read_c0_config()        __read_32bit_c0_register($16, 0)
1171 #define read_c0_config1()       __read_32bit_c0_register($16, 1)
1172 #define read_c0_config2()       __read_32bit_c0_register($16, 2)
1173 #define read_c0_config3()       __read_32bit_c0_register($16, 3)
1174 #define read_c0_config4()       __read_32bit_c0_register($16, 4)
1175 #define read_c0_config5()       __read_32bit_c0_register($16, 5)
1176 #define read_c0_config6()       __read_32bit_c0_register($16, 6)
1177 #define read_c0_config7()       __read_32bit_c0_register($16, 7)
1178 #define write_c0_config(val)    __write_32bit_c0_register($16, 0, val)
1179 #define write_c0_config1(val)   __write_32bit_c0_register($16, 1, val)
1180 #define write_c0_config2(val)   __write_32bit_c0_register($16, 2, val)
1181 #define write_c0_config3(val)   __write_32bit_c0_register($16, 3, val)
1182 #define write_c0_config4(val)   __write_32bit_c0_register($16, 4, val)
1183 #define write_c0_config5(val)   __write_32bit_c0_register($16, 5, val)
1184 #define write_c0_config6(val)   __write_32bit_c0_register($16, 6, val)
1185 #define write_c0_config7(val)   __write_32bit_c0_register($16, 7, val)
1186
1187 #define read_c0_lladdr()        __read_ulong_c0_register($17, 0)
1188 #define write_c0_lladdr(val)    __write_ulong_c0_register($17, 0, val)
1189 #define read_c0_maar()          __read_ulong_c0_register($17, 1)
1190 #define write_c0_maar(val)      __write_ulong_c0_register($17, 1, val)
1191 #define read_c0_maari()         __read_32bit_c0_register($17, 2)
1192 #define write_c0_maari(val)     __write_32bit_c0_register($17, 2, val)
1193
1194 /*
1195  * The WatchLo register.  There may be up to 8 of them.
1196  */
1197 #define read_c0_watchlo0()      __read_ulong_c0_register($18, 0)
1198 #define read_c0_watchlo1()      __read_ulong_c0_register($18, 1)
1199 #define read_c0_watchlo2()      __read_ulong_c0_register($18, 2)
1200 #define read_c0_watchlo3()      __read_ulong_c0_register($18, 3)
1201 #define read_c0_watchlo4()      __read_ulong_c0_register($18, 4)
1202 #define read_c0_watchlo5()      __read_ulong_c0_register($18, 5)
1203 #define read_c0_watchlo6()      __read_ulong_c0_register($18, 6)
1204 #define read_c0_watchlo7()      __read_ulong_c0_register($18, 7)
1205 #define write_c0_watchlo0(val)  __write_ulong_c0_register($18, 0, val)
1206 #define write_c0_watchlo1(val)  __write_ulong_c0_register($18, 1, val)
1207 #define write_c0_watchlo2(val)  __write_ulong_c0_register($18, 2, val)
1208 #define write_c0_watchlo3(val)  __write_ulong_c0_register($18, 3, val)
1209 #define write_c0_watchlo4(val)  __write_ulong_c0_register($18, 4, val)
1210 #define write_c0_watchlo5(val)  __write_ulong_c0_register($18, 5, val)
1211 #define write_c0_watchlo6(val)  __write_ulong_c0_register($18, 6, val)
1212 #define write_c0_watchlo7(val)  __write_ulong_c0_register($18, 7, val)
1213
1214 /*
1215  * The WatchHi register.  There may be up to 8 of them.
1216  */
1217 #define read_c0_watchhi0()      __read_32bit_c0_register($19, 0)
1218 #define read_c0_watchhi1()      __read_32bit_c0_register($19, 1)
1219 #define read_c0_watchhi2()      __read_32bit_c0_register($19, 2)
1220 #define read_c0_watchhi3()      __read_32bit_c0_register($19, 3)
1221 #define read_c0_watchhi4()      __read_32bit_c0_register($19, 4)
1222 #define read_c0_watchhi5()      __read_32bit_c0_register($19, 5)
1223 #define read_c0_watchhi6()      __read_32bit_c0_register($19, 6)
1224 #define read_c0_watchhi7()      __read_32bit_c0_register($19, 7)
1225
1226 #define write_c0_watchhi0(val)  __write_32bit_c0_register($19, 0, val)
1227 #define write_c0_watchhi1(val)  __write_32bit_c0_register($19, 1, val)
1228 #define write_c0_watchhi2(val)  __write_32bit_c0_register($19, 2, val)
1229 #define write_c0_watchhi3(val)  __write_32bit_c0_register($19, 3, val)
1230 #define write_c0_watchhi4(val)  __write_32bit_c0_register($19, 4, val)
1231 #define write_c0_watchhi5(val)  __write_32bit_c0_register($19, 5, val)
1232 #define write_c0_watchhi6(val)  __write_32bit_c0_register($19, 6, val)
1233 #define write_c0_watchhi7(val)  __write_32bit_c0_register($19, 7, val)
1234
1235 #define read_c0_xcontext()      __read_ulong_c0_register($20, 0)
1236 #define write_c0_xcontext(val)  __write_ulong_c0_register($20, 0, val)
1237
1238 #define read_c0_intcontrol()    __read_32bit_c0_ctrl_register($20)
1239 #define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)
1240
1241 #define read_c0_framemask()     __read_32bit_c0_register($21, 0)
1242 #define write_c0_framemask(val) __write_32bit_c0_register($21, 0, val)
1243
1244 #define read_c0_diag()          __read_32bit_c0_register($22, 0)
1245 #define write_c0_diag(val)      __write_32bit_c0_register($22, 0, val)
1246
1247 /* R10K CP0 Branch Diagnostic register is 64bits wide */
1248 #define read_c0_r10k_diag()     __read_64bit_c0_register($22, 0)
1249 #define write_c0_r10k_diag(val) __write_64bit_c0_register($22, 0, val)
1250
1251 #define read_c0_diag1()         __read_32bit_c0_register($22, 1)
1252 #define write_c0_diag1(val)     __write_32bit_c0_register($22, 1, val)
1253
1254 #define read_c0_diag2()         __read_32bit_c0_register($22, 2)
1255 #define write_c0_diag2(val)     __write_32bit_c0_register($22, 2, val)
1256
1257 #define read_c0_diag3()         __read_32bit_c0_register($22, 3)
1258 #define write_c0_diag3(val)     __write_32bit_c0_register($22, 3, val)
1259
1260 #define read_c0_diag4()         __read_32bit_c0_register($22, 4)
1261 #define write_c0_diag4(val)     __write_32bit_c0_register($22, 4, val)
1262
1263 #define read_c0_diag5()         __read_32bit_c0_register($22, 5)
1264 #define write_c0_diag5(val)     __write_32bit_c0_register($22, 5, val)
1265
1266 #define read_c0_debug()         __read_32bit_c0_register($23, 0)
1267 #define write_c0_debug(val)     __write_32bit_c0_register($23, 0, val)
1268
1269 #define read_c0_depc()          __read_ulong_c0_register($24, 0)
1270 #define write_c0_depc(val)      __write_ulong_c0_register($24, 0, val)
1271
1272 /*
1273  * MIPS32 / MIPS64 performance counters
1274  */
1275 #define read_c0_perfctrl0()     __read_32bit_c0_register($25, 0)
1276 #define write_c0_perfctrl0(val) __write_32bit_c0_register($25, 0, val)
1277 #define read_c0_perfcntr0()     __read_32bit_c0_register($25, 1)
1278 #define write_c0_perfcntr0(val) __write_32bit_c0_register($25, 1, val)
1279 #define read_c0_perfcntr0_64()  __read_64bit_c0_register($25, 1)
1280 #define write_c0_perfcntr0_64(val) __write_64bit_c0_register($25, 1, val)
1281 #define read_c0_perfctrl1()     __read_32bit_c0_register($25, 2)
1282 #define write_c0_perfctrl1(val) __write_32bit_c0_register($25, 2, val)
1283 #define read_c0_perfcntr1()     __read_32bit_c0_register($25, 3)
1284 #define write_c0_perfcntr1(val) __write_32bit_c0_register($25, 3, val)
1285 #define read_c0_perfcntr1_64()  __read_64bit_c0_register($25, 3)
1286 #define write_c0_perfcntr1_64(val) __write_64bit_c0_register($25, 3, val)
1287 #define read_c0_perfctrl2()     __read_32bit_c0_register($25, 4)
1288 #define write_c0_perfctrl2(val) __write_32bit_c0_register($25, 4, val)
1289 #define read_c0_perfcntr2()     __read_32bit_c0_register($25, 5)
1290 #define write_c0_perfcntr2(val) __write_32bit_c0_register($25, 5, val)
1291 #define read_c0_perfcntr2_64()  __read_64bit_c0_register($25, 5)
1292 #define write_c0_perfcntr2_64(val) __write_64bit_c0_register($25, 5, val)
1293 #define read_c0_perfctrl3()     __read_32bit_c0_register($25, 6)
1294 #define write_c0_perfctrl3(val) __write_32bit_c0_register($25, 6, val)
1295 #define read_c0_perfcntr3()     __read_32bit_c0_register($25, 7)
1296 #define write_c0_perfcntr3(val) __write_32bit_c0_register($25, 7, val)
1297 #define read_c0_perfcntr3_64()  __read_64bit_c0_register($25, 7)
1298 #define write_c0_perfcntr3_64(val) __write_64bit_c0_register($25, 7, val)
1299
1300 #define read_c0_ecc()           __read_32bit_c0_register($26, 0)
1301 #define write_c0_ecc(val)       __write_32bit_c0_register($26, 0, val)
1302
1303 #define read_c0_derraddr0()     __read_ulong_c0_register($26, 1)
1304 #define write_c0_derraddr0(val) __write_ulong_c0_register($26, 1, val)
1305
1306 #define read_c0_cacheerr()      __read_32bit_c0_register($27, 0)
1307
1308 #define read_c0_derraddr1()     __read_ulong_c0_register($27, 1)
1309 #define write_c0_derraddr1(val) __write_ulong_c0_register($27, 1, val)
1310
1311 #define read_c0_taglo()         __read_32bit_c0_register($28, 0)
1312 #define write_c0_taglo(val)     __write_32bit_c0_register($28, 0, val)
1313
1314 #define read_c0_dtaglo()        __read_32bit_c0_register($28, 2)
1315 #define write_c0_dtaglo(val)    __write_32bit_c0_register($28, 2, val)
1316
1317 #define read_c0_ddatalo()       __read_32bit_c0_register($28, 3)
1318 #define write_c0_ddatalo(val)   __write_32bit_c0_register($28, 3, val)
1319
1320 #define read_c0_staglo()        __read_32bit_c0_register($28, 4)
1321 #define write_c0_staglo(val)    __write_32bit_c0_register($28, 4, val)
1322
1323 #define read_c0_taghi()         __read_32bit_c0_register($29, 0)
1324 #define write_c0_taghi(val)     __write_32bit_c0_register($29, 0, val)
1325
1326 #define read_c0_errorepc()      __read_ulong_c0_register($30, 0)
1327 #define write_c0_errorepc(val)  __write_ulong_c0_register($30, 0, val)
1328
1329 /* MIPSR2 */
1330 #define read_c0_hwrena()        __read_32bit_c0_register($7, 0)
1331 #define write_c0_hwrena(val)    __write_32bit_c0_register($7, 0, val)
1332
1333 #define read_c0_intctl()        __read_32bit_c0_register($12, 1)
1334 #define write_c0_intctl(val)    __write_32bit_c0_register($12, 1, val)
1335
1336 #define read_c0_srsctl()        __read_32bit_c0_register($12, 2)
1337 #define write_c0_srsctl(val)    __write_32bit_c0_register($12, 2, val)
1338
1339 #define read_c0_srsmap()        __read_32bit_c0_register($12, 3)
1340 #define write_c0_srsmap(val)    __write_32bit_c0_register($12, 3, val)
1341
1342 #define read_c0_ebase()         __read_32bit_c0_register($15, 1)
1343 #define write_c0_ebase(val)     __write_32bit_c0_register($15, 1, val)
1344
1345 #define read_c0_cdmmbase()      __read_ulong_c0_register($15, 2)
1346 #define write_c0_cdmmbase(val)  __write_ulong_c0_register($15, 2, val)
1347
1348 /* MIPSR3 */
1349 #define read_c0_segctl0()       __read_32bit_c0_register($5, 2)
1350 #define write_c0_segctl0(val)   __write_32bit_c0_register($5, 2, val)
1351
1352 #define read_c0_segctl1()       __read_32bit_c0_register($5, 3)
1353 #define write_c0_segctl1(val)   __write_32bit_c0_register($5, 3, val)
1354
1355 #define read_c0_segctl2()       __read_32bit_c0_register($5, 4)
1356 #define write_c0_segctl2(val)   __write_32bit_c0_register($5, 4, val)
1357
1358 /* Hardware Page Table Walker */
1359 #define read_c0_pwbase()        __read_ulong_c0_register($5, 5)
1360 #define write_c0_pwbase(val)    __write_ulong_c0_register($5, 5, val)
1361
1362 #define read_c0_pwfield()       __read_ulong_c0_register($5, 6)
1363 #define write_c0_pwfield(val)   __write_ulong_c0_register($5, 6, val)
1364
1365 #define read_c0_pwsize()        __read_ulong_c0_register($5, 7)
1366 #define write_c0_pwsize(val)    __write_ulong_c0_register($5, 7, val)
1367
1368 #define read_c0_pwctl()         __read_32bit_c0_register($6, 6)
1369 #define write_c0_pwctl(val)     __write_32bit_c0_register($6, 6, val)
1370
1371 /* Cavium OCTEON (cnMIPS) */
1372 #define read_c0_cvmcount()      __read_ulong_c0_register($9, 6)
1373 #define write_c0_cvmcount(val)  __write_ulong_c0_register($9, 6, val)
1374
1375 #define read_c0_cvmctl()        __read_64bit_c0_register($9, 7)
1376 #define write_c0_cvmctl(val)    __write_64bit_c0_register($9, 7, val)
1377
1378 #define read_c0_cvmmemctl()     __read_64bit_c0_register($11, 7)
1379 #define write_c0_cvmmemctl(val) __write_64bit_c0_register($11, 7, val)
1380 /*
1381  * The cacheerr registers are not standardized.  On OCTEON, they are
1382  * 64 bits wide.
1383  */
1384 #define read_octeon_c0_icacheerr()      __read_64bit_c0_register($27, 0)
1385 #define write_octeon_c0_icacheerr(val)  __write_64bit_c0_register($27, 0, val)
1386
1387 #define read_octeon_c0_dcacheerr()      __read_64bit_c0_register($27, 1)
1388 #define write_octeon_c0_dcacheerr(val)  __write_64bit_c0_register($27, 1, val)
1389
1390 /* BMIPS3300 */
1391 #define read_c0_brcm_config_0()         __read_32bit_c0_register($22, 0)
1392 #define write_c0_brcm_config_0(val)     __write_32bit_c0_register($22, 0, val)
1393
1394 #define read_c0_brcm_bus_pll()          __read_32bit_c0_register($22, 4)
1395 #define write_c0_brcm_bus_pll(val)      __write_32bit_c0_register($22, 4, val)
1396
1397 #define read_c0_brcm_reset()            __read_32bit_c0_register($22, 5)
1398 #define write_c0_brcm_reset(val)        __write_32bit_c0_register($22, 5, val)
1399
1400 /* BMIPS43xx */
1401 #define read_c0_brcm_cmt_intr()         __read_32bit_c0_register($22, 1)
1402 #define write_c0_brcm_cmt_intr(val)     __write_32bit_c0_register($22, 1, val)
1403
1404 #define read_c0_brcm_cmt_ctrl()         __read_32bit_c0_register($22, 2)
1405 #define write_c0_brcm_cmt_ctrl(val)     __write_32bit_c0_register($22, 2, val)
1406
1407 #define read_c0_brcm_cmt_local()        __read_32bit_c0_register($22, 3)
1408 #define write_c0_brcm_cmt_local(val)    __write_32bit_c0_register($22, 3, val)
1409
1410 #define read_c0_brcm_config_1()         __read_32bit_c0_register($22, 5)
1411 #define write_c0_brcm_config_1(val)     __write_32bit_c0_register($22, 5, val)
1412
1413 #define read_c0_brcm_cbr()              __read_32bit_c0_register($22, 6)
1414 #define write_c0_brcm_cbr(val)          __write_32bit_c0_register($22, 6, val)
1415
1416 /* BMIPS5000 */
1417 #define read_c0_brcm_config()           __read_32bit_c0_register($22, 0)
1418 #define write_c0_brcm_config(val)       __write_32bit_c0_register($22, 0, val)
1419
1420 #define read_c0_brcm_mode()             __read_32bit_c0_register($22, 1)
1421 #define write_c0_brcm_mode(val)         __write_32bit_c0_register($22, 1, val)
1422
1423 #define read_c0_brcm_action()           __read_32bit_c0_register($22, 2)
1424 #define write_c0_brcm_action(val)       __write_32bit_c0_register($22, 2, val)
1425
1426 #define read_c0_brcm_edsp()             __read_32bit_c0_register($22, 3)
1427 #define write_c0_brcm_edsp(val)         __write_32bit_c0_register($22, 3, val)
1428
1429 #define read_c0_brcm_bootvec()          __read_32bit_c0_register($22, 4)
1430 #define write_c0_brcm_bootvec(val)      __write_32bit_c0_register($22, 4, val)
1431
1432 #define read_c0_brcm_sleepcount()       __read_32bit_c0_register($22, 7)
1433 #define write_c0_brcm_sleepcount(val)   __write_32bit_c0_register($22, 7, val)
1434
1435 /*
1436  * Macros to access the floating point coprocessor control registers
1437  */
1438 #define _read_32bit_cp1_register(source, gas_hardfloat)                 \
1439 ({                                                                      \
1440         unsigned int __res;                                             \
1441                                                                         \
1442         __asm__ __volatile__(                                           \
1443         "       .set    push                                    \n"     \
1444         "       .set    reorder                                 \n"     \
1445         "       # gas fails to assemble cfc1 for some archs,    \n"     \
1446         "       # like Octeon.                                  \n"     \
1447         "       .set    mips1                                   \n"     \
1448         "       "STR(gas_hardfloat)"                            \n"     \
1449         "       cfc1    %0,"STR(source)"                        \n"     \
1450         "       .set    pop                                     \n"     \
1451         : "=r" (__res));                                                \
1452         __res;                                                          \
1453 })
1454
1455 #define _write_32bit_cp1_register(dest, val, gas_hardfloat)             \
1456 ({                                                                      \
1457         __asm__ __volatile__(                                           \
1458         "       .set    push                                    \n"     \
1459         "       .set    reorder                                 \n"     \
1460         "       "STR(gas_hardfloat)"                            \n"     \
1461         "       ctc1    %0,"STR(dest)"                          \n"     \
1462         "       .set    pop                                     \n"     \
1463         : : "r" (val));                                                 \
1464 })
1465
1466 #ifdef GAS_HAS_SET_HARDFLOAT
1467 #define read_32bit_cp1_register(source)                                 \
1468         _read_32bit_cp1_register(source, .set hardfloat)
1469 #define write_32bit_cp1_register(dest, val)                             \
1470         _write_32bit_cp1_register(dest, val, .set hardfloat)
1471 #else
1472 #define read_32bit_cp1_register(source)                                 \
1473         _read_32bit_cp1_register(source, )
1474 #define write_32bit_cp1_register(dest, val)                             \
1475         _write_32bit_cp1_register(dest, val, )
1476 #endif
1477
1478 #ifdef HAVE_AS_DSP
1479 #define rddsp(mask)                                                     \
1480 ({                                                                      \
1481         unsigned int __dspctl;                                          \
1482                                                                         \
1483         __asm__ __volatile__(                                           \
1484         "       .set push                                       \n"     \
1485         "       .set dsp                                        \n"     \
1486         "       rddsp   %0, %x1                                 \n"     \
1487         "       .set pop                                        \n"     \
1488         : "=r" (__dspctl)                                               \
1489         : "i" (mask));                                                  \
1490         __dspctl;                                                       \
1491 })
1492
1493 #define wrdsp(val, mask)                                                \
1494 ({                                                                      \
1495         __asm__ __volatile__(                                           \
1496         "       .set push                                       \n"     \
1497         "       .set dsp                                        \n"     \
1498         "       wrdsp   %0, %x1                                 \n"     \
1499         "       .set pop                                        \n"     \
1500         :                                                               \
1501         : "r" (val), "i" (mask));                                       \
1502 })
1503
1504 #define mflo0()                                                         \
1505 ({                                                                      \
1506         long mflo0;                                                     \
1507         __asm__(                                                        \
1508         "       .set push                                       \n"     \
1509         "       .set dsp                                        \n"     \
1510         "       mflo %0, $ac0                                   \n"     \
1511         "       .set pop                                        \n"     \
1512         : "=r" (mflo0));                                                \
1513         mflo0;                                                          \
1514 })
1515
1516 #define mflo1()                                                         \
1517 ({                                                                      \
1518         long mflo1;                                                     \
1519         __asm__(                                                        \
1520         "       .set push                                       \n"     \
1521         "       .set dsp                                        \n"     \
1522         "       mflo %0, $ac1                                   \n"     \
1523         "       .set pop                                        \n"     \
1524         : "=r" (mflo1));                                                \
1525         mflo1;                                                          \
1526 })
1527
1528 #define mflo2()                                                         \
1529 ({                                                                      \
1530         long mflo2;                                                     \
1531         __asm__(                                                        \
1532         "       .set push                                       \n"     \
1533         "       .set dsp                                        \n"     \
1534         "       mflo %0, $ac2                                   \n"     \
1535         "       .set pop                                        \n"     \
1536         : "=r" (mflo2));                                                \
1537         mflo2;                                                          \
1538 })
1539
1540 #define mflo3()                                                         \
1541 ({                                                                      \
1542         long mflo3;                                                     \
1543         __asm__(                                                        \
1544         "       .set push                                       \n"     \
1545         "       .set dsp                                        \n"     \
1546         "       mflo %0, $ac3                                   \n"     \
1547         "       .set pop                                        \n"     \
1548         : "=r" (mflo3));                                                \
1549         mflo3;                                                          \
1550 })
1551
1552 #define mfhi0()                                                         \
1553 ({                                                                      \
1554         long mfhi0;                                                     \
1555         __asm__(                                                        \
1556         "       .set push                                       \n"     \
1557         "       .set dsp                                        \n"     \
1558         "       mfhi %0, $ac0                                   \n"     \
1559         "       .set pop                                        \n"     \
1560         : "=r" (mfhi0));                                                \
1561         mfhi0;                                                          \
1562 })
1563
1564 #define mfhi1()                                                         \
1565 ({                                                                      \
1566         long mfhi1;                                                     \
1567         __asm__(                                                        \
1568         "       .set push                                       \n"     \
1569         "       .set dsp                                        \n"     \
1570         "       mfhi %0, $ac1                                   \n"     \
1571         "       .set pop                                        \n"     \
1572         : "=r" (mfhi1));                                                \
1573         mfhi1;                                                          \
1574 })
1575
1576 #define mfhi2()                                                         \
1577 ({                                                                      \
1578         long mfhi2;                                                     \
1579         __asm__(                                                        \
1580         "       .set push                                       \n"     \
1581         "       .set dsp                                        \n"     \
1582         "       mfhi %0, $ac2                                   \n"     \
1583         "       .set pop                                        \n"     \
1584         : "=r" (mfhi2));                                                \
1585         mfhi2;                                                          \
1586 })
1587
1588 #define mfhi3()                                                         \
1589 ({                                                                      \
1590         long mfhi3;                                                     \
1591         __asm__(                                                        \
1592         "       .set push                                       \n"     \
1593         "       .set dsp                                        \n"     \
1594         "       mfhi %0, $ac3                                   \n"     \
1595         "       .set pop                                        \n"     \
1596         : "=r" (mfhi3));                                                \
1597         mfhi3;                                                          \
1598 })
1599
1600
1601 #define mtlo0(x)                                                        \
1602 ({                                                                      \
1603         __asm__(                                                        \
1604         "       .set push                                       \n"     \
1605         "       .set dsp                                        \n"     \
1606         "       mtlo %0, $ac0                                   \n"     \
1607         "       .set pop                                        \n"     \
1608         :                                                               \
1609         : "r" (x));                                                     \
1610 })
1611
1612 #define mtlo1(x)                                                        \
1613 ({                                                                      \
1614         __asm__(                                                        \
1615         "       .set push                                       \n"     \
1616         "       .set dsp                                        \n"     \
1617         "       mtlo %0, $ac1                                   \n"     \
1618         "       .set pop                                        \n"     \
1619         :                                                               \
1620         : "r" (x));                                                     \
1621 })
1622
1623 #define mtlo2(x)                                                        \
1624 ({                                                                      \
1625         __asm__(                                                        \
1626         "       .set push                                       \n"     \
1627         "       .set dsp                                        \n"     \
1628         "       mtlo %0, $ac2                                   \n"     \
1629         "       .set pop                                        \n"     \
1630         :                                                               \
1631         : "r" (x));                                                     \
1632 })
1633
1634 #define mtlo3(x)                                                        \
1635 ({                                                                      \
1636         __asm__(                                                        \
1637         "       .set push                                       \n"     \
1638         "       .set dsp                                        \n"     \
1639         "       mtlo %0, $ac3                                   \n"     \
1640         "       .set pop                                        \n"     \
1641         :                                                               \
1642         : "r" (x));                                                     \
1643 })
1644
1645 #define mthi0(x)                                                        \
1646 ({                                                                      \
1647         __asm__(                                                        \
1648         "       .set push                                       \n"     \
1649         "       .set dsp                                        \n"     \
1650         "       mthi %0, $ac0                                   \n"     \
1651         "       .set pop                                        \n"     \
1652         :                                                               \
1653         : "r" (x));                                                     \
1654 })
1655
1656 #define mthi1(x)                                                        \
1657 ({                                                                      \
1658         __asm__(                                                        \
1659         "       .set push                                       \n"     \
1660         "       .set dsp                                        \n"     \
1661         "       mthi %0, $ac1                                   \n"     \
1662         "       .set pop                                        \n"     \
1663         :                                                               \
1664         : "r" (x));                                                     \
1665 })
1666
1667 #define mthi2(x)                                                        \
1668 ({                                                                      \
1669         __asm__(                                                        \
1670         "       .set push                                       \n"     \
1671         "       .set dsp                                        \n"     \
1672         "       mthi %0, $ac2                                   \n"     \
1673         "       .set pop                                        \n"     \
1674         :                                                               \
1675         : "r" (x));                                                     \
1676 })
1677
1678 #define mthi3(x)                                                        \
1679 ({                                                                      \
1680         __asm__(                                                        \
1681         "       .set push                                       \n"     \
1682         "       .set dsp                                        \n"     \
1683         "       mthi %0, $ac3                                   \n"     \
1684         "       .set pop                                        \n"     \
1685         :                                                               \
1686         : "r" (x));                                                     \
1687 })
1688
1689 #else
1690
1691 #ifdef CONFIG_CPU_MICROMIPS
1692 #define rddsp(mask)                                                     \
1693 ({                                                                      \
1694         unsigned int __res;                                             \
1695                                                                         \
1696         __asm__ __volatile__(                                           \
1697         "       .set    push                                    \n"     \
1698         "       .set    noat                                    \n"     \
1699         "       # rddsp $1, %x1                                 \n"     \
1700         "       .hword  ((0x0020067c | (%x1 << 14)) >> 16)      \n"     \
1701         "       .hword  ((0x0020067c | (%x1 << 14)) & 0xffff)   \n"     \
1702         "       move    %0, $1                                  \n"     \
1703         "       .set    pop                                     \n"     \
1704         : "=r" (__res)                                                  \
1705         : "i" (mask));                                                  \
1706         __res;                                                          \
1707 })
1708
1709 #define wrdsp(val, mask)                                                \
1710 ({                                                                      \
1711         __asm__ __volatile__(                                           \
1712         "       .set    push                                    \n"     \
1713         "       .set    noat                                    \n"     \
1714         "       move    $1, %0                                  \n"     \
1715         "       # wrdsp $1, %x1                                 \n"     \
1716         "       .hword  ((0x0020167c | (%x1 << 14)) >> 16)      \n"     \
1717         "       .hword  ((0x0020167c | (%x1 << 14)) & 0xffff)   \n"     \
1718         "       .set    pop                                     \n"     \
1719         :                                                               \
1720         : "r" (val), "i" (mask));                                       \
1721 })
1722
1723 #define _umips_dsp_mfxxx(ins)                                           \
1724 ({                                                                      \
1725         unsigned long __treg;                                           \
1726                                                                         \
1727         __asm__ __volatile__(                                           \
1728         "       .set    push                                    \n"     \
1729         "       .set    noat                                    \n"     \
1730         "       .hword  0x0001                                  \n"     \
1731         "       .hword  %x1                                     \n"     \
1732         "       move    %0, $1                                  \n"     \
1733         "       .set    pop                                     \n"     \
1734         : "=r" (__treg)                                                 \
1735         : "i" (ins));                                                   \
1736         __treg;                                                         \
1737 })
1738
1739 #define _umips_dsp_mtxxx(val, ins)                                      \
1740 ({                                                                      \
1741         __asm__ __volatile__(                                           \
1742         "       .set    push                                    \n"     \
1743         "       .set    noat                                    \n"     \
1744         "       move    $1, %0                                  \n"     \
1745         "       .hword  0x0001                                  \n"     \
1746         "       .hword  %x1                                     \n"     \
1747         "       .set    pop                                     \n"     \
1748         :                                                               \
1749         : "r" (val), "i" (ins));                                        \
1750 })
1751
1752 #define _umips_dsp_mflo(reg) _umips_dsp_mfxxx((reg << 14) | 0x107c)
1753 #define _umips_dsp_mfhi(reg) _umips_dsp_mfxxx((reg << 14) | 0x007c)
1754
1755 #define _umips_dsp_mtlo(val, reg) _umips_dsp_mtxxx(val, ((reg << 14) | 0x307c))
1756 #define _umips_dsp_mthi(val, reg) _umips_dsp_mtxxx(val, ((reg << 14) | 0x207c))
1757
1758 #define mflo0() _umips_dsp_mflo(0)
1759 #define mflo1() _umips_dsp_mflo(1)
1760 #define mflo2() _umips_dsp_mflo(2)
1761 #define mflo3() _umips_dsp_mflo(3)
1762
1763 #define mfhi0() _umips_dsp_mfhi(0)
1764 #define mfhi1() _umips_dsp_mfhi(1)
1765 #define mfhi2() _umips_dsp_mfhi(2)
1766 #define mfhi3() _umips_dsp_mfhi(3)
1767
1768 #define mtlo0(x) _umips_dsp_mtlo(x, 0)
1769 #define mtlo1(x) _umips_dsp_mtlo(x, 1)
1770 #define mtlo2(x) _umips_dsp_mtlo(x, 2)
1771 #define mtlo3(x) _umips_dsp_mtlo(x, 3)
1772
1773 #define mthi0(x) _umips_dsp_mthi(x, 0)
1774 #define mthi1(x) _umips_dsp_mthi(x, 1)
1775 #define mthi2(x) _umips_dsp_mthi(x, 2)
1776 #define mthi3(x) _umips_dsp_mthi(x, 3)
1777
1778 #else  /* !CONFIG_CPU_MICROMIPS */
1779 #define rddsp(mask)                                                     \
1780 ({                                                                      \
1781         unsigned int __res;                                             \
1782                                                                         \
1783         __asm__ __volatile__(                                           \
1784         "       .set    push                            \n"             \
1785         "       .set    noat                            \n"             \
1786         "       # rddsp $1, %x1                         \n"             \
1787         "       .word   0x7c000cb8 | (%x1 << 16)        \n"             \
1788         "       move    %0, $1                          \n"             \
1789         "       .set    pop                             \n"             \
1790         : "=r" (__res)                                                  \
1791         : "i" (mask));                                                  \
1792         __res;                                                          \
1793 })
1794
1795 #define wrdsp(val, mask)                                                \
1796 ({                                                                      \
1797         __asm__ __volatile__(                                           \
1798         "       .set    push                                    \n"     \
1799         "       .set    noat                                    \n"     \
1800         "       move    $1, %0                                  \n"     \
1801         "       # wrdsp $1, %x1                                 \n"     \
1802         "       .word   0x7c2004f8 | (%x1 << 11)                \n"     \
1803         "       .set    pop                                     \n"     \
1804         :                                                               \
1805         : "r" (val), "i" (mask));                                       \
1806 })
1807
1808 #define _dsp_mfxxx(ins)                                                 \
1809 ({                                                                      \
1810         unsigned long __treg;                                           \
1811                                                                         \
1812         __asm__ __volatile__(                                           \
1813         "       .set    push                                    \n"     \
1814         "       .set    noat                                    \n"     \
1815         "       .word   (0x00000810 | %1)                       \n"     \
1816         "       move    %0, $1                                  \n"     \
1817         "       .set    pop                                     \n"     \
1818         : "=r" (__treg)                                                 \
1819         : "i" (ins));                                                   \
1820         __treg;                                                         \
1821 })
1822
1823 #define _dsp_mtxxx(val, ins)                                            \
1824 ({                                                                      \
1825         __asm__ __volatile__(                                           \
1826         "       .set    push                                    \n"     \
1827         "       .set    noat                                    \n"     \
1828         "       move    $1, %0                                  \n"     \
1829         "       .word   (0x00200011 | %1)                       \n"     \
1830         "       .set    pop                                     \n"     \
1831         :                                                               \
1832         : "r" (val), "i" (ins));                                        \
1833 })
1834
1835 #define _dsp_mflo(reg) _dsp_mfxxx((reg << 21) | 0x0002)
1836 #define _dsp_mfhi(reg) _dsp_mfxxx((reg << 21) | 0x0000)
1837
1838 #define _dsp_mtlo(val, reg) _dsp_mtxxx(val, ((reg << 11) | 0x0002))
1839 #define _dsp_mthi(val, reg) _dsp_mtxxx(val, ((reg << 11) | 0x0000))
1840
1841 #define mflo0() _dsp_mflo(0)
1842 #define mflo1() _dsp_mflo(1)
1843 #define mflo2() _dsp_mflo(2)
1844 #define mflo3() _dsp_mflo(3)
1845
1846 #define mfhi0() _dsp_mfhi(0)
1847 #define mfhi1() _dsp_mfhi(1)
1848 #define mfhi2() _dsp_mfhi(2)
1849 #define mfhi3() _dsp_mfhi(3)
1850
1851 #define mtlo0(x) _dsp_mtlo(x, 0)
1852 #define mtlo1(x) _dsp_mtlo(x, 1)
1853 #define mtlo2(x) _dsp_mtlo(x, 2)
1854 #define mtlo3(x) _dsp_mtlo(x, 3)
1855
1856 #define mthi0(x) _dsp_mthi(x, 0)
1857 #define mthi1(x) _dsp_mthi(x, 1)
1858 #define mthi2(x) _dsp_mthi(x, 2)
1859 #define mthi3(x) _dsp_mthi(x, 3)
1860
1861 #endif /* CONFIG_CPU_MICROMIPS */
1862 #endif
1863
1864 /*
1865  * TLB operations.
1866  *
1867  * It is responsibility of the caller to take care of any TLB hazards.
1868  */
1869 static inline void tlb_probe(void)
1870 {
1871         __asm__ __volatile__(
1872                 ".set noreorder\n\t"
1873                 "tlbp\n\t"
1874                 ".set reorder");
1875 }
1876
1877 static inline void tlb_read(void)
1878 {
1879 #if MIPS34K_MISSED_ITLB_WAR
1880         int res = 0;
1881
1882         __asm__ __volatile__(
1883         "       .set    push                                    \n"
1884         "       .set    noreorder                               \n"
1885         "       .set    noat                                    \n"
1886         "       .set    mips32r2                                \n"
1887         "       .word   0x41610001              # dvpe $1       \n"
1888         "       move    %0, $1                                  \n"
1889         "       ehb                                             \n"
1890         "       .set    pop                                     \n"
1891         : "=r" (res));
1892
1893         instruction_hazard();
1894 #endif
1895
1896         __asm__ __volatile__(
1897                 ".set noreorder\n\t"
1898                 "tlbr\n\t"
1899                 ".set reorder");
1900
1901 #if MIPS34K_MISSED_ITLB_WAR
1902         if ((res & _ULCAST_(1)))
1903                 __asm__ __volatile__(
1904                 "       .set    push                            \n"
1905                 "       .set    noreorder                       \n"
1906                 "       .set    noat                            \n"
1907                 "       .set    mips32r2                        \n"
1908                 "       .word   0x41600021      # evpe          \n"
1909                 "       ehb                                     \n"
1910                 "       .set    pop                             \n");
1911 #endif
1912 }
1913
1914 static inline void tlb_write_indexed(void)
1915 {
1916         __asm__ __volatile__(
1917                 ".set noreorder\n\t"
1918                 "tlbwi\n\t"
1919                 ".set reorder");
1920 }
1921
1922 static inline void tlb_write_random(void)
1923 {
1924         __asm__ __volatile__(
1925                 ".set noreorder\n\t"
1926                 "tlbwr\n\t"
1927                 ".set reorder");
1928 }
1929
1930 /*
1931  * Manipulate bits in a c0 register.
1932  */
1933 #define __BUILD_SET_C0(name)                                    \
1934 static inline unsigned int                                      \
1935 set_c0_##name(unsigned int set)                                 \
1936 {                                                               \
1937         unsigned int res, new;                                  \
1938                                                                 \
1939         res = read_c0_##name();                                 \
1940         new = res | set;                                        \
1941         write_c0_##name(new);                                   \
1942                                                                 \
1943         return res;                                             \
1944 }                                                               \
1945                                                                 \
1946 static inline unsigned int                                      \
1947 clear_c0_##name(unsigned int clear)                             \
1948 {                                                               \
1949         unsigned int res, new;                                  \
1950                                                                 \
1951         res = read_c0_##name();                                 \
1952         new = res & ~clear;                                     \
1953         write_c0_##name(new);                                   \
1954                                                                 \
1955         return res;                                             \
1956 }                                                               \
1957                                                                 \
1958 static inline unsigned int                                      \
1959 change_c0_##name(unsigned int change, unsigned int val)         \
1960 {                                                               \
1961         unsigned int res, new;                                  \
1962                                                                 \
1963         res = read_c0_##name();                                 \
1964         new = res & ~change;                                    \
1965         new |= (val & change);                                  \
1966         write_c0_##name(new);                                   \
1967                                                                 \
1968         return res;                                             \
1969 }
1970
1971 __BUILD_SET_C0(status)
1972 __BUILD_SET_C0(cause)
1973 __BUILD_SET_C0(config)
1974 __BUILD_SET_C0(config5)
1975 __BUILD_SET_C0(intcontrol)
1976 __BUILD_SET_C0(intctl)
1977 __BUILD_SET_C0(srsmap)
1978 __BUILD_SET_C0(pagegrain)
1979 __BUILD_SET_C0(brcm_config_0)
1980 __BUILD_SET_C0(brcm_bus_pll)
1981 __BUILD_SET_C0(brcm_reset)
1982 __BUILD_SET_C0(brcm_cmt_intr)
1983 __BUILD_SET_C0(brcm_cmt_ctrl)
1984 __BUILD_SET_C0(brcm_config)
1985 __BUILD_SET_C0(brcm_mode)
1986
1987 /*
1988  * Return low 10 bits of ebase.
1989  * Note that under KVM (MIPSVZ) this returns vcpu id.
1990  */
1991 static inline unsigned int get_ebase_cpunum(void)
1992 {
1993         return read_c0_ebase() & 0x3ff;
1994 }
1995
1996 #endif /* !__ASSEMBLY__ */
1997
1998 #endif /* _ASM_MIPSREGS_H */