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   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001 by Ralf Baechle
   7  * Copyright (C) 2000 Silicon Graphics, Inc.
   8  * Modified for further R[236]000 support by Paul M. Antoine, 1996.
   9  * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
  10  * Copyright (C) 2000, 07 MIPS Technologies, Inc.
  11  * Copyright (C) 2003, 2004  Maciej W. Rozycki
  12  */
  13 #ifndef _ASM_MIPSREGS_H
  14 #define _ASM_MIPSREGS_H
  15
  16 #include <linux/linkage.h>
  17 #include <asm/hazards.h>
  18 #include <asm/war.h>
  19
  20 /*
  21  * The following macros are especially useful for __asm__
  22  * inline assembler.
  23  */
  24 #ifndef __STR
  25 #define __STR(x) #x
  26 #endif
  27 #ifndef STR
  28 #define STR(x) __STR(x)
  29 #endif
  30
  31 /*
  32  *  Configure language
  33  */
  34 #ifdef __ASSEMBLY__
  35 #define _ULCAST_
  36 #else
  37 #define _ULCAST_ (unsigned long)
  38 #endif
  39
  40 /*
  41  * Coprocessor 0 register names
  42  */
  43 #define CP0_INDEX $0
  44 #define CP0_RANDOM $1
  45 #define CP0_ENTRYLO0 $2
  46 #define CP0_ENTRYLO1 $3
  47 #define CP0_CONF $3
  48 #define CP0_CONTEXT $4
  49 #define CP0_PAGEMASK $5
  50 #define CP0_WIRED $6
  51 #define CP0_INFO $7
  52 #define CP0_BADVADDR $8
  53 #define CP0_COUNT $9
  54 #define CP0_ENTRYHI $10
  55 #define CP0_COMPARE $11
  56 #define CP0_STATUS $12
  57 #define CP0_CAUSE $13
  58 #define CP0_EPC $14
  59 #define CP0_PRID $15
  60 #define CP0_CONFIG $16
  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  * Coprocessor 1 (FPU) register names
 115  */
 116 #define CP1_REVISION   $0
 117 #define CP1_STATUS     $31
 118
 119 /*
 120  * FPU Status Register Values
 121  */
 122 /*
 123  * Status Register Values
 124  */
 125
 126 #define FPU_CSR_FLUSH   0x01000000      /* flush denormalised results to 0 */
 127 #define FPU_CSR_COND    0x00800000      /* $fcc0 */
 128 #define FPU_CSR_COND0   0x00800000      /* $fcc0 */
 129 #define FPU_CSR_COND1   0x02000000      /* $fcc1 */
 130 #define FPU_CSR_COND2   0x04000000      /* $fcc2 */
 131 #define FPU_CSR_COND3   0x08000000      /* $fcc3 */
 132 #define FPU_CSR_COND4   0x10000000      /* $fcc4 */
 133 #define FPU_CSR_COND5   0x20000000      /* $fcc5 */
 134 #define FPU_CSR_COND6   0x40000000      /* $fcc6 */
 135 #define FPU_CSR_COND7   0x80000000      /* $fcc7 */
 136
 137 /*
 138  * X the exception cause indicator
 139  * E the exception enable
 140  * S the sticky/flag bit
 141 */
 142 #define FPU_CSR_ALL_X   0x0003f000
 143 #define FPU_CSR_UNI_X   0x00020000
 144 #define FPU_CSR_INV_X   0x00010000
 145 #define FPU_CSR_DIV_X   0x00008000
 146 #define FPU_CSR_OVF_X   0x00004000
 147 #define FPU_CSR_UDF_X   0x00002000
 148 #define FPU_CSR_INE_X   0x00001000
 149
 150 #define FPU_CSR_ALL_E   0x00000f80
 151 #define FPU_CSR_INV_E   0x00000800
 152 #define FPU_CSR_DIV_E   0x00000400
 153 #define FPU_CSR_OVF_E   0x00000200
 154 #define FPU_CSR_UDF_E   0x00000100
 155 #define FPU_CSR_INE_E   0x00000080
 156
 157 #define FPU_CSR_ALL_S   0x0000007c
 158 #define FPU_CSR_INV_S   0x00000040
 159 #define FPU_CSR_DIV_S   0x00000020
 160 #define FPU_CSR_OVF_S   0x00000010
 161 #define FPU_CSR_UDF_S   0x00000008
 162 #define FPU_CSR_INE_S   0x00000004
 163
 164 /* rounding mode */
 165 #define FPU_CSR_RN      0x0     /* nearest */
 166 #define FPU_CSR_RZ      0x1     /* towards zero */
 167 #define FPU_CSR_RU      0x2     /* towards +Infinity */
 168 #define FPU_CSR_RD      0x3     /* towards -Infinity */
 169
 170
 171 /*
 172  * Values for PageMask register
 173  */
 174 #ifdef CONFIG_CPU_VR41XX
 175
 176 /* Why doesn't stupidity hurt ... */
 177
 178 #define PM_1K           0x00000000
 179 #define PM_4K           0x00001800
 180 #define PM_16K          0x00007800
 181 #define PM_64K          0x0001f800
 182 #define PM_256K         0x0007f800
 183
 184 #else
 185
 186 #define PM_4K           0x00000000
 187 #define PM_16K          0x00006000
 188 #define PM_64K          0x0001e000
 189 #define PM_256K         0x0007e000
 190 #define PM_1M           0x001fe000
 191 #define PM_4M           0x007fe000
 192 #define PM_16M          0x01ffe000
 193 #define PM_64M          0x07ffe000
 194 #define PM_256M         0x1fffe000
 195 #define PM_1G           0x7fffe000
 196
 197 #endif
 198
 199 /*
 200  * Default page size for a given kernel configuration
 201  */
 202 #ifdef CONFIG_PAGE_SIZE_4KB
 203 #define PM_DEFAULT_MASK PM_4K
 204 #elif defined(CONFIG_PAGE_SIZE_16KB)
 205 #define PM_DEFAULT_MASK PM_16K
 206 #elif defined(CONFIG_PAGE_SIZE_64KB)
 207 #define PM_DEFAULT_MASK PM_64K
 208 #else
 209 #error Bad page size configuration!
 210 #endif
 211
 212
 213 /*
 214  * Values used for computation of new tlb entries
 215  */
 216 #define PL_4K           12
 217 #define PL_16K          14
 218 #define PL_64K          16
 219 #define PL_256K         18
 220 #define PL_1M           20
 221 #define PL_4M           22
 222 #define PL_16M          24
 223 #define PL_64M          26
 224 #define PL_256M         28
 225
 226 /*
 227  * R4x00 interrupt enable / cause bits
 228  */
 229 #define IE_SW0          (_ULCAST_(1) <<  8)
 230 #define IE_SW1          (_ULCAST_(1) <<  9)
 231 #define IE_IRQ0         (_ULCAST_(1) << 10)
 232 #define IE_IRQ1         (_ULCAST_(1) << 11)
 233 #define IE_IRQ2         (_ULCAST_(1) << 12)
 234 #define IE_IRQ3         (_ULCAST_(1) << 13)
 235 #define IE_IRQ4         (_ULCAST_(1) << 14)
 236 #define IE_IRQ5         (_ULCAST_(1) << 15)
 237
 238 /*
 239  * R4x00 interrupt cause bits
 240  */
 241 #define C_SW0           (_ULCAST_(1) <<  8)
 242 #define C_SW1           (_ULCAST_(1) <<  9)
 243 #define C_IRQ0          (_ULCAST_(1) << 10)
 244 #define C_IRQ1          (_ULCAST_(1) << 11)
 245 #define C_IRQ2          (_ULCAST_(1) << 12)
 246 #define C_IRQ3          (_ULCAST_(1) << 13)
 247 #define C_IRQ4          (_ULCAST_(1) << 14)
 248 #define C_IRQ5          (_ULCAST_(1) << 15)
 249
 250 /*
 251  * Bitfields in the R4xx0 cp0 status register
 252  */
 253 #define ST0_IE                  0x00000001
 254 #define ST0_EXL                 0x00000002
 255 #define ST0_ERL                 0x00000004
 256 #define ST0_KSU                 0x00000018
 257 #  define KSU_USER              0x00000010
 258 #  define KSU_SUPERVISOR        0x00000008
 259 #  define KSU_KERNEL            0x00000000
 260 #define ST0_UX                  0x00000020
 261 #define ST0_SX                  0x00000040
 262 #define ST0_KX                  0x00000080
 263 #define ST0_DE                  0x00010000
 264 #define ST0_CE                  0x00020000
 265
 266 /*
 267  * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
 268  * cacheops in userspace.  This bit exists only on RM7000 and RM9000
 269  * processors.
 270  */
 271 #define ST0_CO                  0x08000000
 272
 273 /*
 274  * Bitfields in the R[23]000 cp0 status register.
 275  */
 276 #define ST0_IEC                 0x00000001
 277 #define ST0_KUC                 0x00000002
 278 #define ST0_IEP                 0x00000004
 279 #define ST0_KUP                 0x00000008
 280 #define ST0_IEO                 0x00000010
 281 #define ST0_KUO                 0x00000020
 282 /* bits 6 & 7 are reserved on R[23]000 */
 283 #define ST0_ISC                 0x00010000
 284 #define ST0_SWC                 0x00020000
 285 #define ST0_CM                  0x00080000
 286
 287 /*
 288  * Bits specific to the R4640/R4650
 289  */
 290 #define ST0_UM                  (_ULCAST_(1) <<  4)
 291 #define ST0_IL                  (_ULCAST_(1) << 23)
 292 #define ST0_DL                  (_ULCAST_(1) << 24)
 293
 294 /*
 295  * Enable the MIPS MDMX and DSP ASEs
 296  */
 297 #define ST0_MX                  0x01000000
 298
 299 /*
 300  * Bitfields in the TX39 family CP0 Configuration Register 3
 301  */
 302 #define TX39_CONF_ICS_SHIFT     19
 303 #define TX39_CONF_ICS_MASK      0x00380000
 304 #define TX39_CONF_ICS_1KB       0x00000000
 305 #define TX39_CONF_ICS_2KB       0x00080000
 306 #define TX39_CONF_ICS_4KB       0x00100000
 307 #define TX39_CONF_ICS_8KB       0x00180000
 308 #define TX39_CONF_ICS_16KB      0x00200000
 309
 310 #define TX39_CONF_DCS_SHIFT     16
 311 #define TX39_CONF_DCS_MASK      0x00070000
 312 #define TX39_CONF_DCS_1KB       0x00000000
 313 #define TX39_CONF_DCS_2KB       0x00010000
 314 #define TX39_CONF_DCS_4KB       0x00020000
 315 #define TX39_CONF_DCS_8KB       0x00030000
 316 #define TX39_CONF_DCS_16KB      0x00040000
 317
 318 #define TX39_CONF_CWFON         0x00004000
 319 #define TX39_CONF_WBON          0x00002000
 320 #define TX39_CONF_RF_SHIFT      10
 321 #define TX39_CONF_RF_MASK       0x00000c00
 322 #define TX39_CONF_DOZE          0x00000200
 323 #define TX39_CONF_HALT          0x00000100
 324 #define TX39_CONF_LOCK          0x00000080
 325 #define TX39_CONF_ICE           0x00000020
 326 #define TX39_CONF_DCE           0x00000010
 327 #define TX39_CONF_IRSIZE_SHIFT  2
 328 #define TX39_CONF_IRSIZE_MASK   0x0000000c
 329 #define TX39_CONF_DRSIZE_SHIFT  0
 330 #define TX39_CONF_DRSIZE_MASK   0x00000003
 331
 332 /*
 333  * Status register bits available in all MIPS CPUs.
 334  */
 335 #define ST0_IM                  0x0000ff00
 336 #define  STATUSB_IP0            8
 337 #define  STATUSF_IP0            (_ULCAST_(1) <<  8)
 338 #define  STATUSB_IP1            9
 339 #define  STATUSF_IP1            (_ULCAST_(1) <<  9)
 340 #define  STATUSB_IP2            10
 341 #define  STATUSF_IP2            (_ULCAST_(1) << 10)
 342 #define  STATUSB_IP3            11
 343 #define  STATUSF_IP3            (_ULCAST_(1) << 11)
 344 #define  STATUSB_IP4            12
 345 #define  STATUSF_IP4            (_ULCAST_(1) << 12)
 346 #define  STATUSB_IP5            13
 347 #define  STATUSF_IP5            (_ULCAST_(1) << 13)
 348 #define  STATUSB_IP6            14
 349 #define  STATUSF_IP6            (_ULCAST_(1) << 14)
 350 #define  STATUSB_IP7            15
 351 #define  STATUSF_IP7            (_ULCAST_(1) << 15)
 352 #define  STATUSB_IP8            0
 353 #define  STATUSF_IP8            (_ULCAST_(1) <<  0)
 354 #define  STATUSB_IP9            1
 355 #define  STATUSF_IP9            (_ULCAST_(1) <<  1)
 356 #define  STATUSB_IP10           2
 357 #define  STATUSF_IP10           (_ULCAST_(1) <<  2)
 358 #define  STATUSB_IP11           3
 359 #define  STATUSF_IP11           (_ULCAST_(1) <<  3)
 360 #define  STATUSB_IP12           4
 361 #define  STATUSF_IP12           (_ULCAST_(1) <<  4)
 362 #define  STATUSB_IP13           5
 363 #define  STATUSF_IP13           (_ULCAST_(1) <<  5)
 364 #define  STATUSB_IP14           6
 365 #define  STATUSF_IP14           (_ULCAST_(1) <<  6)
 366 #define  STATUSB_IP15           7
 367 #define  STATUSF_IP15           (_ULCAST_(1) <<  7)
 368 #define ST0_CH                  0x00040000
 369 #define ST0_SR                  0x00100000
 370 #define ST0_TS                  0x00200000
 371 #define ST0_BEV                 0x00400000
 372 #define ST0_RE                  0x02000000
 373 #define ST0_FR                  0x04000000
 374 #define ST0_CU                  0xf0000000
 375 #define ST0_CU0                 0x10000000
 376 #define ST0_CU1                 0x20000000
 377 #define ST0_CU2                 0x40000000
 378 #define ST0_CU3                 0x80000000
 379 #define ST0_XX                  0x80000000      /* MIPS IV naming */
 380
 381 /*
 382  * Bitfields and bit numbers in the coprocessor 0 cause register.
 383  *
 384  * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
 385  */
 386 #define  CAUSEB_EXCCODE         2
 387 #define  CAUSEF_EXCCODE         (_ULCAST_(31)  <<  2)
 388 #define  CAUSEB_IP              8
 389 #define  CAUSEF_IP              (_ULCAST_(255) <<  8)
 390 #define  CAUSEB_IP0             8
 391 #define  CAUSEF_IP0             (_ULCAST_(1)   <<  8)
 392 #define  CAUSEB_IP1             9
 393 #define  CAUSEF_IP1             (_ULCAST_(1)   <<  9)
 394 #define  CAUSEB_IP2             10
 395 #define  CAUSEF_IP2             (_ULCAST_(1)   << 10)
 396 #define  CAUSEB_IP3             11
 397 #define  CAUSEF_IP3             (_ULCAST_(1)   << 11)
 398 #define  CAUSEB_IP4             12
 399 #define  CAUSEF_IP4             (_ULCAST_(1)   << 12)
 400 #define  CAUSEB_IP5             13
 401 #define  CAUSEF_IP5             (_ULCAST_(1)   << 13)
 402 #define  CAUSEB_IP6             14
 403 #define  CAUSEF_IP6             (_ULCAST_(1)   << 14)
 404 #define  CAUSEB_IP7             15
 405 #define  CAUSEF_IP7             (_ULCAST_(1)   << 15)
 406 #define  CAUSEB_IV              23
 407 #define  CAUSEF_IV              (_ULCAST_(1)   << 23)
 408 #define  CAUSEB_CE              28
 409 #define  CAUSEF_CE              (_ULCAST_(3)   << 28)
 410 #define  CAUSEB_BD              31
 411 #define  CAUSEF_BD              (_ULCAST_(1)   << 31)
 412
 413 /*
 414  * Bits in the coprocessor 0 config register.
 415  */
 416 /* Generic bits.  */
 417 #define CONF_CM_CACHABLE_NO_WA          0
 418 #define CONF_CM_CACHABLE_WA             1
 419 #define CONF_CM_UNCACHED                2
 420 #define CONF_CM_CACHABLE_NONCOHERENT    3
 421 #define CONF_CM_CACHABLE_CE             4
 422 #define CONF_CM_CACHABLE_COW            5
 423 #define CONF_CM_CACHABLE_CUW            6
 424 #define CONF_CM_CACHABLE_ACCELERATED    7
 425 #define CONF_CM_CMASK                   7
 426 #define CONF_BE                 (_ULCAST_(1) << 15)
 427
 428 /* Bits common to various processors.  */
 429 #define CONF_CU                 (_ULCAST_(1) <<  3)
 430 #define CONF_DB                 (_ULCAST_(1) <<  4)
 431 #define CONF_IB                 (_ULCAST_(1) <<  5)
 432 #define CONF_DC                 (_ULCAST_(7) <<  6)
 433 #define CONF_IC                 (_ULCAST_(7) <<  9)
 434 #define CONF_EB                 (_ULCAST_(1) << 13)
 435 #define CONF_EM                 (_ULCAST_(1) << 14)
 436 #define CONF_SM                 (_ULCAST_(1) << 16)
 437 #define CONF_SC                 (_ULCAST_(1) << 17)
 438 #define CONF_EW                 (_ULCAST_(3) << 18)
 439 #define CONF_EP                 (_ULCAST_(15)<< 24)
 440 #define CONF_EC                 (_ULCAST_(7) << 28)
 441 #define CONF_CM                 (_ULCAST_(1) << 31)
 442
 443 /* Bits specific to the R4xx0.  */
 444 #define R4K_CONF_SW             (_ULCAST_(1) << 20)
 445 #define R4K_CONF_SS             (_ULCAST_(1) << 21)
 446 #define R4K_CONF_SB             (_ULCAST_(3) << 22)
 447
 448 /* Bits specific to the R5000.  */
 449 #define R5K_CONF_SE             (_ULCAST_(1) << 12)
 450 #define R5K_CONF_SS             (_ULCAST_(3) << 20)
 451
 452 /* Bits specific to the RM7000.  */
 453 #define RM7K_CONF_SE            (_ULCAST_(1) <<  3)
 454 #define RM7K_CONF_TE            (_ULCAST_(1) << 12)
 455 #define RM7K_CONF_CLK           (_ULCAST_(1) << 16)
 456 #define RM7K_CONF_TC            (_ULCAST_(1) << 17)
 457 #define RM7K_CONF_SI            (_ULCAST_(3) << 20)
 458 #define RM7K_CONF_SC            (_ULCAST_(1) << 31)
 459
 460 /* Bits specific to the R10000.  */
 461 #define R10K_CONF_DN            (_ULCAST_(3) <<  3)
 462 #define R10K_CONF_CT            (_ULCAST_(1) <<  5)
 463 #define R10K_CONF_PE            (_ULCAST_(1) <<  6)
 464 #define R10K_CONF_PM            (_ULCAST_(3) <<  7)
 465 #define R10K_CONF_EC            (_ULCAST_(15)<<  9)
 466 #define R10K_CONF_SB            (_ULCAST_(1) << 13)
 467 #define R10K_CONF_SK            (_ULCAST_(1) << 14)
 468 #define R10K_CONF_SS            (_ULCAST_(7) << 16)
 469 #define R10K_CONF_SC            (_ULCAST_(7) << 19)
 470 #define R10K_CONF_DC            (_ULCAST_(7) << 26)
 471 #define R10K_CONF_IC            (_ULCAST_(7) << 29)
 472
 473 /* Bits specific to the VR41xx.  */
 474 #define VR41_CONF_CS            (_ULCAST_(1) << 12)
 475 #define VR41_CONF_P4K           (_ULCAST_(1) << 13)
 476 #define VR41_CONF_BP            (_ULCAST_(1) << 16)
 477 #define VR41_CONF_M16           (_ULCAST_(1) << 20)
 478 #define VR41_CONF_AD            (_ULCAST_(1) << 23)
 479
 480 /* Bits specific to the R30xx.  */
 481 #define R30XX_CONF_FDM          (_ULCAST_(1) << 19)
 482 #define R30XX_CONF_REV          (_ULCAST_(1) << 22)
 483 #define R30XX_CONF_AC           (_ULCAST_(1) << 23)
 484 #define R30XX_CONF_RF           (_ULCAST_(1) << 24)
 485 #define R30XX_CONF_HALT         (_ULCAST_(1) << 25)
 486 #define R30XX_CONF_FPINT        (_ULCAST_(7) << 26)
 487 #define R30XX_CONF_DBR          (_ULCAST_(1) << 29)
 488 #define R30XX_CONF_SB           (_ULCAST_(1) << 30)
 489 #define R30XX_CONF_LOCK         (_ULCAST_(1) << 31)
 490
 491 /* Bits specific to the TX49.  */
 492 #define TX49_CONF_DC            (_ULCAST_(1) << 16)
 493 #define TX49_CONF_IC            (_ULCAST_(1) << 17)  /* conflict with CONF_SC */
 494 #define TX49_CONF_HALT          (_ULCAST_(1) << 18)
 495 #define TX49_CONF_CWFON         (_ULCAST_(1) << 27)
 496
 497 /* Bits specific to the MIPS32/64 PRA.  */
 498 #define MIPS_CONF_MT            (_ULCAST_(7) <<  7)
 499 #define MIPS_CONF_AR            (_ULCAST_(7) << 10)
 500 #define MIPS_CONF_AT            (_ULCAST_(3) << 13)
 501 #define MIPS_CONF_M             (_ULCAST_(1) << 31)
 502
 503 /*
 504  * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
 505  */
 506 #define MIPS_CONF1_FP           (_ULCAST_(1) <<  0)
 507 #define MIPS_CONF1_EP           (_ULCAST_(1) <<  1)
 508 #define MIPS_CONF1_CA           (_ULCAST_(1) <<  2)
 509 #define MIPS_CONF1_WR           (_ULCAST_(1) <<  3)
 510 #define MIPS_CONF1_PC           (_ULCAST_(1) <<  4)
 511 #define MIPS_CONF1_MD           (_ULCAST_(1) <<  5)
 512 #define MIPS_CONF1_C2           (_ULCAST_(1) <<  6)
 513 #define MIPS_CONF1_DA           (_ULCAST_(7) <<  7)
 514 #define MIPS_CONF1_DL           (_ULCAST_(7) << 10)
 515 #define MIPS_CONF1_DS           (_ULCAST_(7) << 13)
 516 #define MIPS_CONF1_IA           (_ULCAST_(7) << 16)
 517 #define MIPS_CONF1_IL           (_ULCAST_(7) << 19)
 518 #define MIPS_CONF1_IS           (_ULCAST_(7) << 22)
 519 #define MIPS_CONF1_TLBS         (_ULCAST_(63)<< 25)
 520
 521 #define MIPS_CONF2_SA           (_ULCAST_(15)<<  0)
 522 #define MIPS_CONF2_SL           (_ULCAST_(15)<<  4)
 523 #define MIPS_CONF2_SS           (_ULCAST_(15)<<  8)
 524 #define MIPS_CONF2_SU           (_ULCAST_(15)<< 12)
 525 #define MIPS_CONF2_TA           (_ULCAST_(15)<< 16)
 526 #define MIPS_CONF2_TL           (_ULCAST_(15)<< 20)
 527 #define MIPS_CONF2_TS           (_ULCAST_(15)<< 24)
 528 #define MIPS_CONF2_TU           (_ULCAST_(7) << 28)
 529
 530 #define MIPS_CONF3_TL           (_ULCAST_(1) <<  0)
 531 #define MIPS_CONF3_SM           (_ULCAST_(1) <<  1)
 532 #define MIPS_CONF3_MT           (_ULCAST_(1) <<  2)
 533 #define MIPS_CONF3_SP           (_ULCAST_(1) <<  4)
 534 #define MIPS_CONF3_VINT         (_ULCAST_(1) <<  5)
 535 #define MIPS_CONF3_VEIC         (_ULCAST_(1) <<  6)
 536 #define MIPS_CONF3_LPA          (_ULCAST_(1) <<  7)
 537 #define MIPS_CONF3_DSP          (_ULCAST_(1) << 10)
 538 #define MIPS_CONF3_ULRI         (_ULCAST_(1) << 13)
 539
 540 #define MIPS_CONF7_WII          (_ULCAST_(1) << 31)
 541
 542 #define MIPS_CONF7_RPS          (_ULCAST_(1) << 2)
 543
 544
 545 /*
 546  * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
 547  */
 548 #define MIPS_FPIR_S             (_ULCAST_(1) << 16)
 549 #define MIPS_FPIR_D             (_ULCAST_(1) << 17)
 550 #define MIPS_FPIR_PS            (_ULCAST_(1) << 18)
 551 #define MIPS_FPIR_3D            (_ULCAST_(1) << 19)
 552 #define MIPS_FPIR_W             (_ULCAST_(1) << 20)
 553 #define MIPS_FPIR_L             (_ULCAST_(1) << 21)
 554 #define MIPS_FPIR_F64           (_ULCAST_(1) << 22)
 555
 556 #ifndef __ASSEMBLY__
 557
 558 /*
 559  * Functions to access the R10000 performance counters.  These are basically
 560  * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
 561  * performance counter number encoded into bits 1 ... 5 of the instruction.
 562  * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
 563  * disassembler these will look like an access to sel 0 or 1.
 564  */
 565 #define read_r10k_perf_cntr(counter)                            \
 566 ({                                                              \
 567         unsigned int __res;                                     \
 568         __asm__ __volatile__(                                   \
 569         "mfpc\t%0, %1"                                          \
 570         : "=r" (__res)                                          \
 571         : "i" (counter));                                       \
 572                                                                 \
 573         __res;                                                  \
 574 })
 575
 576 #define write_r10k_perf_cntr(counter,val)                       \
 577 do {                                                            \
 578         __asm__ __volatile__(                                   \
 579         "mtpc\t%0, %1"                                          \
 580         :                                                       \
 581         : "r" (val), "i" (counter));                            \
 582 } while (0)
 583
 584 #define read_r10k_perf_event(counter)                           \
 585 ({                                                              \
 586         unsigned int __res;                                     \
 587         __asm__ __volatile__(                                   \
 588         "mfps\t%0, %1"                                          \
 589         : "=r" (__res)                                          \
 590         : "i" (counter));                                       \
 591                                                                 \
 592         __res;                                                  \
 593 })
 594
 595 #define write_r10k_perf_cntl(counter,val)                       \
 596 do {                                                            \
 597         __asm__ __volatile__(                                   \
 598         "mtps\t%0, %1"                                          \
 599         :                                                       \
 600         : "r" (val), "i" (counter));                            \
 601 } while (0)
 602
 603
 604 /*
 605  * Macros to access the system control coprocessor
 606  */
 607
 608 #define __read_32bit_c0_register(source, sel)                           \
 609 ({ int __res;                                                           \
 610         if (sel == 0)                                                   \
 611                 __asm__ __volatile__(                                   \
 612                         "mfc0\t%0, " #source "\n\t"                     \
 613                         : "=r" (__res));                                \
 614         else                                                            \
 615                 __asm__ __volatile__(                                   \
 616                         ".set\tmips32\n\t"                              \
 617                         "mfc0\t%0, " #source ", " #sel "\n\t"           \
 618                         ".set\tmips0\n\t"                               \
 619                         : "=r" (__res));                                \
 620         __res;                                                          \
 621 })
 622
 623 #define __read_64bit_c0_register(source, sel)                           \
 624 ({ unsigned long long __res;                                            \
 625         if (sizeof(unsigned long) == 4)                                 \
 626                 __res = __read_64bit_c0_split(source, sel);             \
 627         else if (sel == 0)                                              \
 628                 __asm__ __volatile__(                                   \
 629                         ".set\tmips3\n\t"                               \
 630                         "dmfc0\t%0, " #source "\n\t"                    \
 631                         ".set\tmips0"                                   \
 632                         : "=r" (__res));                                \
 633         else                                                            \
 634                 __asm__ __volatile__(                                   \
 635                         ".set\tmips64\n\t"                              \
 636                         "dmfc0\t%0, " #source ", " #sel "\n\t"          \
 637                         ".set\tmips0"                                   \
 638                         : "=r" (__res));                                \
 639         __res;                                                          \
 640 })
 641
 642 #define __write_32bit_c0_register(register, sel, value)                 \
 643 do {                                                                    \
 644         if (sel == 0)                                                   \
 645                 __asm__ __volatile__(                                   \
 646                         "mtc0\t%z0, " #register "\n\t"                  \
 647                         : : "Jr" ((unsigned int)(value)));              \
 648         else                                                            \
 649                 __asm__ __volatile__(                                   \
 650                         ".set\tmips32\n\t"                              \
 651                         "mtc0\t%z0, " #register ", " #sel "\n\t"        \
 652                         ".set\tmips0"                                   \
 653                         : : "Jr" ((unsigned int)(value)));              \
 654 } while (0)
 655
 656 #define __write_64bit_c0_register(register, sel, value)                 \
 657 do {                                                                    \
 658         if (sizeof(unsigned long) == 4)                                 \
 659                 __write_64bit_c0_split(register, sel, value);           \
 660         else if (sel == 0)                                              \
 661                 __asm__ __volatile__(                                   \
 662                         ".set\tmips3\n\t"                               \
 663                         "dmtc0\t%z0, " #register "\n\t"                 \
 664                         ".set\tmips0"                                   \
 665                         : : "Jr" (value));                              \
 666         else                                                            \
 667                 __asm__ __volatile__(                                   \
 668                         ".set\tmips64\n\t"                              \
 669                         "dmtc0\t%z0, " #register ", " #sel "\n\t"       \
 670                         ".set\tmips0"                                   \
 671                         : : "Jr" (value));                              \
 672 } while (0)
 673
 674 #define __read_ulong_c0_register(reg, sel)                              \
 675         ((sizeof(unsigned long) == 4) ?                                 \
 676         (unsigned long) __read_32bit_c0_register(reg, sel) :            \
 677         (unsigned long) __read_64bit_c0_register(reg, sel))
 678
 679 #define __write_ulong_c0_register(reg, sel, val)                        \
 680 do {                                                                    \
 681         if (sizeof(unsigned long) == 4)                                 \
 682                 __write_32bit_c0_register(reg, sel, val);               \
 683         else                                                            \
 684                 __write_64bit_c0_register(reg, sel, val);               \
 685 } while (0)
 686
 687 /*
 688  * On RM7000/RM9000 these are uses to access cop0 set 1 registers
 689  */
 690 #define __read_32bit_c0_ctrl_register(source)                           \
 691 ({ int __res;                                                           \
 692         __asm__ __volatile__(                                           \
 693                 "cfc0\t%0, " #source "\n\t"                             \
 694                 : "=r" (__res));                                        \
 695         __res;                                                          \
 696 })
 697
 698 #define __write_32bit_c0_ctrl_register(register, value)                 \
 699 do {                                                                    \
 700         __asm__ __volatile__(                                           \
 701                 "ctc0\t%z0, " #register "\n\t"                          \
 702                 : : "Jr" ((unsigned int)(value)));                      \
 703 } while (0)
 704
 705 /*
 706  * These versions are only needed for systems with more than 38 bits of
 707  * physical address space running the 32-bit kernel.  That's none atm :-)
 708  */
 709 #define __read_64bit_c0_split(source, sel)                              \
 710 ({                                                                      \
 711         unsigned long long __val;                                       \
 712         unsigned long __flags;                                          \
 713                                                                         \
 714         local_irq_save(__flags);                                        \
 715         if (sel == 0)                                                   \
 716                 __asm__ __volatile__(                                   \
 717                         ".set\tmips64\n\t"                              \
 718                         "dmfc0\t%M0, " #source "\n\t"                   \
 719                         "dsll\t%L0, %M0, 32\n\t"                        \
 720                         "dsrl\t%M0, %M0, 32\n\t"                        \
 721                         "dsrl\t%L0, %L0, 32\n\t"                        \
 722                         ".set\tmips0"                                   \
 723                         : "=r" (__val));                                \
 724         else                                                            \
 725                 __asm__ __volatile__(                                   \
 726                         ".set\tmips64\n\t"                              \
 727                         "dmfc0\t%M0, " #source ", " #sel "\n\t"         \
 728                         "dsll\t%L0, %M0, 32\n\t"                        \
 729                         "dsrl\t%M0, %M0, 32\n\t"                        \
 730                         "dsrl\t%L0, %L0, 32\n\t"                        \
 731                         ".set\tmips0"                                   \
 732                         : "=r" (__val));                                \
 733         local_irq_restore(__flags);                                     \
 734                                                                         \
 735         __val;                                                          \
 736 })
 737
 738 #define __write_64bit_c0_split(source, sel, val)                        \
 739 do {                                                                    \
 740         unsigned long __flags;                                          \
 741                                                                         \
 742         local_irq_save(__flags);                                        \
 743         if (sel == 0)                                                   \
 744                 __asm__ __volatile__(                                   \
 745                         ".set\tmips64\n\t"                              \
 746                         "dsll\t%L0, %L0, 32\n\t"                        \
 747                         "dsrl\t%L0, %L0, 32\n\t"                        \
 748                         "dsll\t%M0, %M0, 32\n\t"                        \
 749                         "or\t%L0, %L0, %M0\n\t"                         \
 750                         "dmtc0\t%L0, " #source "\n\t"                   \
 751                         ".set\tmips0"                                   \
 752                         : : "r" (val));                                 \
 753         else                                                            \
 754                 __asm__ __volatile__(                                   \
 755                         ".set\tmips64\n\t"                              \
 756                         "dsll\t%L0, %L0, 32\n\t"                        \
 757                         "dsrl\t%L0, %L0, 32\n\t"                        \
 758                         "dsll\t%M0, %M0, 32\n\t"                        \
 759                         "or\t%L0, %L0, %M0\n\t"                         \
 760                         "dmtc0\t%L0, " #source ", " #sel "\n\t"         \
 761                         ".set\tmips0"                                   \
 762                         : : "r" (val));                                 \
 763         local_irq_restore(__flags);                                     \
 764 } while (0)
 765
 766 #define read_c0_index()         __read_32bit_c0_register($0, 0)
 767 #define write_c0_index(val)     __write_32bit_c0_register($0, 0, val)
 768
 769 #define read_c0_random()        __read_32bit_c0_register($1, 0)
 770 #define write_c0_random(val)    __write_32bit_c0_register($1, 0, val)
 771
 772 #define read_c0_entrylo0()      __read_ulong_c0_register($2, 0)
 773 #define write_c0_entrylo0(val)  __write_ulong_c0_register($2, 0, val)
 774
 775 #define read_c0_entrylo1()      __read_ulong_c0_register($3, 0)
 776 #define write_c0_entrylo1(val)  __write_ulong_c0_register($3, 0, val)
 777
 778 #define read_c0_conf()          __read_32bit_c0_register($3, 0)
 779 #define write_c0_conf(val)      __write_32bit_c0_register($3, 0, val)
 780
 781 #define read_c0_context()       __read_ulong_c0_register($4, 0)
 782 #define write_c0_context(val)   __write_ulong_c0_register($4, 0, val)
 783
 784 #define read_c0_userlocal()     __read_ulong_c0_register($4, 2)
 785 #define write_c0_userlocal(val) __write_ulong_c0_register($4, 2, val)
 786
 787 #define read_c0_pagemask()      __read_32bit_c0_register($5, 0)
 788 #define write_c0_pagemask(val)  __write_32bit_c0_register($5, 0, val)
 789
 790 #define read_c0_wired()         __read_32bit_c0_register($6, 0)
 791 #define write_c0_wired(val)     __write_32bit_c0_register($6, 0, val)
 792
 793 #define read_c0_info()          __read_32bit_c0_register($7, 0)
 794
 795 #define read_c0_cache()         __read_32bit_c0_register($7, 0) /* TX39xx */
 796 #define write_c0_cache(val)     __write_32bit_c0_register($7, 0, val)
 797
 798 #define read_c0_badvaddr()      __read_ulong_c0_register($8, 0)
 799 #define write_c0_badvaddr(val)  __write_ulong_c0_register($8, 0, val)
 800
 801 #define read_c0_count()         __read_32bit_c0_register($9, 0)
 802 #define write_c0_count(val)     __write_32bit_c0_register($9, 0, val)
 803
 804 #define read_c0_count2()        __read_32bit_c0_register($9, 6) /* pnx8550 */
 805 #define write_c0_count2(val)    __write_32bit_c0_register($9, 6, val)
 806
 807 #define read_c0_count3()        __read_32bit_c0_register($9, 7) /* pnx8550 */
 808 #define write_c0_count3(val)    __write_32bit_c0_register($9, 7, val)
 809
 810 #define read_c0_entryhi()       __read_ulong_c0_register($10, 0)
 811 #define write_c0_entryhi(val)   __write_ulong_c0_register($10, 0, val)
 812
 813 #define read_c0_compare()       __read_32bit_c0_register($11, 0)
 814 #define write_c0_compare(val)   __write_32bit_c0_register($11, 0, val)
 815
 816 #define read_c0_compare2()      __read_32bit_c0_register($11, 6) /* pnx8550 */
 817 #define write_c0_compare2(val)  __write_32bit_c0_register($11, 6, val)
 818
 819 #define read_c0_compare3()      __read_32bit_c0_register($11, 7) /* pnx8550 */
 820 #define write_c0_compare3(val)  __write_32bit_c0_register($11, 7, val)
 821
 822 #define read_c0_status()        __read_32bit_c0_register($12, 0)
 823 #ifdef CONFIG_MIPS_MT_SMTC
 824 #define write_c0_status(val)                                            \
 825 do {                                                                    \
 826         __write_32bit_c0_register($12, 0, val);                         \
 827         __ehb();                                                        \
 828 } while (0)
 829 #else
 830 /*
 831  * Legacy non-SMTC code, which may be hazardous
 832  * but which might not support EHB
 833  */
 834 #define write_c0_status(val)    __write_32bit_c0_register($12, 0, val)
 835 #endif /* CONFIG_MIPS_MT_SMTC */
 836
 837 #define read_c0_cause()         __read_32bit_c0_register($13, 0)
 838 #define write_c0_cause(val)     __write_32bit_c0_register($13, 0, val)
 839
 840 #define read_c0_epc()           __read_ulong_c0_register($14, 0)
 841 #define write_c0_epc(val)       __write_ulong_c0_register($14, 0, val)
 842
 843 #define read_c0_prid()          __read_32bit_c0_register($15, 0)
 844
 845 #define read_c0_config()        __read_32bit_c0_register($16, 0)
 846 #define read_c0_config1()       __read_32bit_c0_register($16, 1)
 847 #define read_c0_config2()       __read_32bit_c0_register($16, 2)
 848 #define read_c0_config3()       __read_32bit_c0_register($16, 3)
 849 #define read_c0_config4()       __read_32bit_c0_register($16, 4)
 850 #define read_c0_config5()       __read_32bit_c0_register($16, 5)
 851 #define read_c0_config6()       __read_32bit_c0_register($16, 6)
 852 #define read_c0_config7()       __read_32bit_c0_register($16, 7)
 853 #define write_c0_config(val)    __write_32bit_c0_register($16, 0, val)
 854 #define write_c0_config1(val)   __write_32bit_c0_register($16, 1, val)
 855 #define write_c0_config2(val)   __write_32bit_c0_register($16, 2, val)
 856 #define write_c0_config3(val)   __write_32bit_c0_register($16, 3, val)
 857 #define write_c0_config4(val)   __write_32bit_c0_register($16, 4, val)
 858 #define write_c0_config5(val)   __write_32bit_c0_register($16, 5, val)
 859 #define write_c0_config6(val)   __write_32bit_c0_register($16, 6, val)
 860 #define write_c0_config7(val)   __write_32bit_c0_register($16, 7, val)
 861
 862 /*
 863  * The WatchLo register.  There may be upto 8 of them.
 864  */
 865 #define read_c0_watchlo0()      __read_ulong_c0_register($18, 0)
 866 #define read_c0_watchlo1()      __read_ulong_c0_register($18, 1)
 867 #define read_c0_watchlo2()      __read_ulong_c0_register($18, 2)
 868 #define read_c0_watchlo3()      __read_ulong_c0_register($18, 3)
 869 #define read_c0_watchlo4()      __read_ulong_c0_register($18, 4)
 870 #define read_c0_watchlo5()      __read_ulong_c0_register($18, 5)
 871 #define read_c0_watchlo6()      __read_ulong_c0_register($18, 6)
 872 #define read_c0_watchlo7()      __read_ulong_c0_register($18, 7)
 873 #define write_c0_watchlo0(val)  __write_ulong_c0_register($18, 0, val)
 874 #define write_c0_watchlo1(val)  __write_ulong_c0_register($18, 1, val)
 875 #define write_c0_watchlo2(val)  __write_ulong_c0_register($18, 2, val)
 876 #define write_c0_watchlo3(val)  __write_ulong_c0_register($18, 3, val)
 877 #define write_c0_watchlo4(val)  __write_ulong_c0_register($18, 4, val)
 878 #define write_c0_watchlo5(val)  __write_ulong_c0_register($18, 5, val)
 879 #define write_c0_watchlo6(val)  __write_ulong_c0_register($18, 6, val)
 880 #define write_c0_watchlo7(val)  __write_ulong_c0_register($18, 7, val)
 881
 882 /*
 883  * The WatchHi register.  There may be upto 8 of them.
 884  */
 885 #define read_c0_watchhi0()      __read_32bit_c0_register($19, 0)
 886 #define read_c0_watchhi1()      __read_32bit_c0_register($19, 1)
 887 #define read_c0_watchhi2()      __read_32bit_c0_register($19, 2)
 888 #define read_c0_watchhi3()      __read_32bit_c0_register($19, 3)
 889 #define read_c0_watchhi4()      __read_32bit_c0_register($19, 4)
 890 #define read_c0_watchhi5()      __read_32bit_c0_register($19, 5)
 891 #define read_c0_watchhi6()      __read_32bit_c0_register($19, 6)
 892 #define read_c0_watchhi7()      __read_32bit_c0_register($19, 7)
 893
 894 #define write_c0_watchhi0(val)  __write_32bit_c0_register($19, 0, val)
 895 #define write_c0_watchhi1(val)  __write_32bit_c0_register($19, 1, val)
 896 #define write_c0_watchhi2(val)  __write_32bit_c0_register($19, 2, val)
 897 #define write_c0_watchhi3(val)  __write_32bit_c0_register($19, 3, val)
 898 #define write_c0_watchhi4(val)  __write_32bit_c0_register($19, 4, val)
 899 #define write_c0_watchhi5(val)  __write_32bit_c0_register($19, 5, val)
 900 #define write_c0_watchhi6(val)  __write_32bit_c0_register($19, 6, val)
 901 #define write_c0_watchhi7(val)  __write_32bit_c0_register($19, 7, val)
 902
 903 #define read_c0_xcontext()      __read_ulong_c0_register($20, 0)
 904 #define write_c0_xcontext(val)  __write_ulong_c0_register($20, 0, val)
 905
 906 #define read_c0_intcontrol()    __read_32bit_c0_ctrl_register($20)
 907 #define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)
 908
 909 #define read_c0_framemask()     __read_32bit_c0_register($21, 0)
 910 #define write_c0_framemask(val) __write_32bit_c0_register($21, 0, val)
 911
 912 /* RM9000 PerfControl performance counter control register */
 913 #define read_c0_perfcontrol()   __read_32bit_c0_register($22, 0)
 914 #define write_c0_perfcontrol(val) __write_32bit_c0_register($22, 0, val)
 915
 916 #define read_c0_diag()          __read_32bit_c0_register($22, 0)
 917 #define write_c0_diag(val)      __write_32bit_c0_register($22, 0, val)
 918
 919 #define read_c0_diag1()         __read_32bit_c0_register($22, 1)
 920 #define write_c0_diag1(val)     __write_32bit_c0_register($22, 1, val)
 921
 922 #define read_c0_diag2()         __read_32bit_c0_register($22, 2)
 923 #define write_c0_diag2(val)     __write_32bit_c0_register($22, 2, val)
 924
 925 #define read_c0_diag3()         __read_32bit_c0_register($22, 3)
 926 #define write_c0_diag3(val)     __write_32bit_c0_register($22, 3, val)
 927
 928 #define read_c0_diag4()         __read_32bit_c0_register($22, 4)
 929 #define write_c0_diag4(val)     __write_32bit_c0_register($22, 4, val)
 930
 931 #define read_c0_diag5()         __read_32bit_c0_register($22, 5)
 932 #define write_c0_diag5(val)     __write_32bit_c0_register($22, 5, val)
 933
 934 #define read_c0_debug()         __read_32bit_c0_register($23, 0)
 935 #define write_c0_debug(val)     __write_32bit_c0_register($23, 0, val)
 936
 937 #define read_c0_depc()          __read_ulong_c0_register($24, 0)
 938 #define write_c0_depc(val)      __write_ulong_c0_register($24, 0, val)
 939
 940 /*
 941  * MIPS32 / MIPS64 performance counters
 942  */
 943 #define read_c0_perfctrl0()     __read_32bit_c0_register($25, 0)
 944 #define write_c0_perfctrl0(val) __write_32bit_c0_register($25, 0, val)
 945 #define read_c0_perfcntr0()     __read_32bit_c0_register($25, 1)
 946 #define write_c0_perfcntr0(val) __write_32bit_c0_register($25, 1, val)
 947 #define read_c0_perfctrl1()     __read_32bit_c0_register($25, 2)
 948 #define write_c0_perfctrl1(val) __write_32bit_c0_register($25, 2, val)
 949 #define read_c0_perfcntr1()     __read_32bit_c0_register($25, 3)
 950 #define write_c0_perfcntr1(val) __write_32bit_c0_register($25, 3, val)
 951 #define read_c0_perfctrl2()     __read_32bit_c0_register($25, 4)
 952 #define write_c0_perfctrl2(val) __write_32bit_c0_register($25, 4, val)
 953 #define read_c0_perfcntr2()     __read_32bit_c0_register($25, 5)
 954 #define write_c0_perfcntr2(val) __write_32bit_c0_register($25, 5, val)
 955 #define read_c0_perfctrl3()     __read_32bit_c0_register($25, 6)
 956 #define write_c0_perfctrl3(val) __write_32bit_c0_register($25, 6, val)
 957 #define read_c0_perfcntr3()     __read_32bit_c0_register($25, 7)
 958 #define write_c0_perfcntr3(val) __write_32bit_c0_register($25, 7, val)
 959
 960 /* RM9000 PerfCount performance counter register */
 961 #define read_c0_perfcount()     __read_64bit_c0_register($25, 0)
 962 #define write_c0_perfcount(val) __write_64bit_c0_register($25, 0, val)
 963
 964 #define read_c0_ecc()           __read_32bit_c0_register($26, 0)
 965 #define write_c0_ecc(val)       __write_32bit_c0_register($26, 0, val)
 966
 967 #define read_c0_derraddr0()     __read_ulong_c0_register($26, 1)
 968 #define write_c0_derraddr0(val) __write_ulong_c0_register($26, 1, val)
 969
 970 #define read_c0_cacheerr()      __read_32bit_c0_register($27, 0)
 971
 972 #define read_c0_derraddr1()     __read_ulong_c0_register($27, 1)
 973 #define write_c0_derraddr1(val) __write_ulong_c0_register($27, 1, val)
 974
 975 #define read_c0_taglo()         __read_32bit_c0_register($28, 0)
 976 #define write_c0_taglo(val)     __write_32bit_c0_register($28, 0, val)
 977
 978 #define read_c0_dtaglo()        __read_32bit_c0_register($28, 2)
 979 #define write_c0_dtaglo(val)    __write_32bit_c0_register($28, 2, val)
 980
 981 #define read_c0_taghi()         __read_32bit_c0_register($29, 0)
 982 #define write_c0_taghi(val)     __write_32bit_c0_register($29, 0, val)
 983
 984 #define read_c0_errorepc()      __read_ulong_c0_register($30, 0)
 985 #define write_c0_errorepc(val)  __write_ulong_c0_register($30, 0, val)
 986
 987 /* MIPSR2 */
 988 #define read_c0_hwrena()        __read_32bit_c0_register($7, 0)
 989 #define write_c0_hwrena(val)    __write_32bit_c0_register($7, 0, val)
 990
 991 #define read_c0_intctl()        __read_32bit_c0_register($12, 1)
 992 #define write_c0_intctl(val)    __write_32bit_c0_register($12, 1, val)
 993
 994 #define read_c0_srsctl()        __read_32bit_c0_register($12, 2)
 995 #define write_c0_srsctl(val)    __write_32bit_c0_register($12, 2, val)
 996
 997 #define read_c0_srsmap()        __read_32bit_c0_register($12, 3)
 998 #define write_c0_srsmap(val)    __write_32bit_c0_register($12, 3, val)
 999
1000 #define read_c0_ebase()         __read_32bit_c0_register($15, 1)
1001 #define write_c0_ebase(val)     __write_32bit_c0_register($15, 1, val)
1002
1003
1004 /* Cavium OCTEON (cnMIPS) */
1005 #define read_c0_cvmcount()      __read_ulong_c0_register($9, 6)
1006 #define write_c0_cvmcount(val)  __write_ulong_c0_register($9, 6, val)
1007
1008 #define read_c0_cvmctl()        __read_64bit_c0_register($9, 7)
1009 #define write_c0_cvmctl(val)    __write_64bit_c0_register($9, 7, val)
1010
1011 #define read_c0_cvmmemctl()     __read_64bit_c0_register($11, 7)
1012 #define write_c0_cvmmemctl(val) __write_64bit_c0_register($11, 7, val)
1013 /*
1014  * The cacheerr registers are not standardized.  On OCTEON, they are
1015  * 64 bits wide.
1016  */
1017 #define read_octeon_c0_icacheerr()      __read_64bit_c0_register($27, 0)
1018 #define write_octeon_c0_icacheerr(val)  __write_64bit_c0_register($27, 0, val)
1019
1020 #define read_octeon_c0_dcacheerr()      __read_64bit_c0_register($27, 1)
1021 #define write_octeon_c0_dcacheerr(val)  __write_64bit_c0_register($27, 1, val)
1022
1023 /*
1024  * Macros to access the floating point coprocessor control registers
1025  */
1026 #define read_32bit_cp1_register(source)                         \
1027 ({ int __res;                                                   \
1028         __asm__ __volatile__(                                   \
1029         ".set\tpush\n\t"                                        \
1030         ".set\treorder\n\t"                                     \
1031         /* gas fails to assemble cfc1 for some archs (octeon).*/ \
1032         ".set\tmips1\n\t"                                       \
1033         "cfc1\t%0,"STR(source)"\n\t"                            \
1034         ".set\tpop"                                             \
1035         : "=r" (__res));                                        \
1036         __res;})
1037
1038 #define rddsp(mask)                                                     \
1039 ({                                                                      \
1040         unsigned int __res;                                             \
1041                                                                         \
1042         __asm__ __volatile__(                                           \
1043         "       .set    push                            \n"             \
1044         "       .set    noat                            \n"             \
1045         "       # rddsp $1, %x1                         \n"             \
1046         "       .word   0x7c000cb8 | (%x1 << 16)        \n"             \
1047         "       move    %0, $1                          \n"             \
1048         "       .set    pop                             \n"             \
1049         : "=r" (__res)                                                  \
1050         : "i" (mask));                                                  \
1051         __res;                                                          \
1052 })
1053
1054 #define wrdsp(val, mask)                                                \
1055 do {                                                                    \
1056         __asm__ __volatile__(                                           \
1057         "       .set    push                                    \n"     \
1058         "       .set    noat                                    \n"     \
1059         "       move    $1, %0                                  \n"     \
1060         "       # wrdsp $1, %x1                                 \n"     \
1061         "       .word   0x7c2004f8 | (%x1 << 11)                \n"     \
1062         "       .set    pop                                     \n"     \
1063         :                                                               \
1064         : "r" (val), "i" (mask));                                       \
1065 } while (0)
1066
1067 #if 0   /* Need DSP ASE capable assembler ... */
1068 #define mflo0() ({ long mflo0; __asm__("mflo %0, $ac0" : "=r" (mflo0)); mflo0;})
1069 #define mflo1() ({ long mflo1; __asm__("mflo %0, $ac1" : "=r" (mflo1)); mflo1;})
1070 #define mflo2() ({ long mflo2; __asm__("mflo %0, $ac2" : "=r" (mflo2)); mflo2;})
1071 #define mflo3() ({ long mflo3; __asm__("mflo %0, $ac3" : "=r" (mflo3)); mflo3;})
1072
1073 #define mfhi0() ({ long mfhi0; __asm__("mfhi %0, $ac0" : "=r" (mfhi0)); mfhi0;})
1074 #define mfhi1() ({ long mfhi1; __asm__("mfhi %0, $ac1" : "=r" (mfhi1)); mfhi1;})
1075 #define mfhi2() ({ long mfhi2; __asm__("mfhi %0, $ac2" : "=r" (mfhi2)); mfhi2;})
1076 #define mfhi3() ({ long mfhi3; __asm__("mfhi %0, $ac3" : "=r" (mfhi3)); mfhi3;})
1077
1078 #define mtlo0(x) __asm__("mtlo %0, $ac0" ::"r" (x))
1079 #define mtlo1(x) __asm__("mtlo %0, $ac1" ::"r" (x))
1080 #define mtlo2(x) __asm__("mtlo %0, $ac2" ::"r" (x))
1081 #define mtlo3(x) __asm__("mtlo %0, $ac3" ::"r" (x))
1082
1083 #define mthi0(x) __asm__("mthi %0, $ac0" ::"r" (x))
1084 #define mthi1(x) __asm__("mthi %0, $ac1" ::"r" (x))
1085 #define mthi2(x) __asm__("mthi %0, $ac2" ::"r" (x))
1086 #define mthi3(x) __asm__("mthi %0, $ac3" ::"r" (x))
1087
1088 #else
1089
1090 #define mfhi0()                                                         \
1091 ({                                                                      \
1092         unsigned long __treg;                                           \
1093                                                                         \
1094         __asm__ __volatile__(                                           \
1095         "       .set    push                    \n"                     \
1096         "       .set    noat                    \n"                     \
1097         "       # mfhi  %0, $ac0                \n"                     \
1098         "       .word   0x00000810              \n"                     \
1099         "       move    %0, $1                  \n"                     \
1100         "       .set    pop                     \n"                     \
1101         : "=r" (__treg));                                               \
1102         __treg;                                                         \
1103 })
1104
1105 #define mfhi1()                                                         \
1106 ({                                                                      \
1107         unsigned long __treg;                                           \
1108                                                                         \
1109         __asm__ __volatile__(                                           \
1110         "       .set    push                    \n"                     \
1111         "       .set    noat                    \n"                     \
1112         "       # mfhi  %0, $ac1                \n"                     \
1113         "       .word   0x00200810              \n"                     \
1114         "       move    %0, $1                  \n"                     \
1115         "       .set    pop                     \n"                     \
1116         : "=r" (__treg));                                               \
1117         __treg;                                                         \
1118 })
1119
1120 #define mfhi2()                                                         \
1121 ({                                                                      \
1122         unsigned long __treg;                                           \
1123                                                                         \
1124         __asm__ __volatile__(                                           \
1125         "       .set    push                    \n"                     \
1126         "       .set    noat                    \n"                     \
1127         "       # mfhi  %0, $ac2                \n"                     \
1128         "       .word   0x00400810              \n"                     \
1129         "       move    %0, $1                  \n"                     \
1130         "       .set    pop                     \n"                     \
1131         : "=r" (__treg));                                               \
1132         __treg;                                                         \
1133 })
1134
1135 #define mfhi3()                                                         \
1136 ({                                                                      \
1137         unsigned long __treg;                                           \
1138                                                                         \
1139         __asm__ __volatile__(                                           \
1140         "       .set    push                    \n"                     \
1141         "       .set    noat                    \n"                     \
1142         "       # mfhi  %0, $ac3                \n"                     \
1143         "       .word   0x00600810              \n"                     \
1144         "       move    %0, $1                  \n"                     \
1145         "       .set    pop                     \n"                     \
1146         : "=r" (__treg));                                               \
1147         __treg;                                                         \
1148 })
1149
1150 #define mflo0()                                                         \
1151 ({                                                                      \
1152         unsigned long __treg;                                           \
1153                                                                         \
1154         __asm__ __volatile__(                                           \
1155         "       .set    push                    \n"                     \
1156         "       .set    noat                    \n"                     \
1157         "       # mflo  %0, $ac0                \n"                     \
1158         "       .word   0x00000812              \n"                     \
1159         "       move    %0, $1                  \n"                     \
1160         "       .set    pop                     \n"                     \
1161         : "=r" (__treg));                                               \
1162         __treg;                                                         \
1163 })
1164
1165 #define mflo1()                                                         \
1166 ({                                                                      \
1167         unsigned long __treg;                                           \
1168                                                                         \
1169         __asm__ __volatile__(                                           \
1170         "       .set    push                    \n"                     \
1171         "       .set    noat                    \n"                     \
1172         "       # mflo  %0, $ac1                \n"                     \
1173         "       .word   0x00200812              \n"                     \
1174         "       move    %0, $1                  \n"                     \
1175         "       .set    pop                     \n"                     \
1176         : "=r" (__treg));                                               \
1177         __treg;                                                         \
1178 })
1179
1180 #define mflo2()                                                         \
1181 ({                                                                      \
1182         unsigned long __treg;                                           \
1183                                                                         \
1184         __asm__ __volatile__(                                           \
1185         "       .set    push                    \n"                     \
1186         "       .set    noat                    \n"                     \
1187         "       # mflo  %0, $ac2                \n"                     \
1188         "       .word   0x00400812              \n"                     \
1189         "       move    %0, $1                  \n"                     \
1190         "       .set    pop                     \n"                     \
1191         : "=r" (__treg));                                               \
1192         __treg;                                                         \
1193 })
1194
1195 #define mflo3()                                                         \
1196 ({                                                                      \
1197         unsigned long __treg;                                           \
1198                                                                         \
1199         __asm__ __volatile__(                                           \
1200         "       .set    push                    \n"                     \
1201         "       .set    noat                    \n"                     \
1202         "       # mflo  %0, $ac3                \n"                     \
1203         "       .word   0x00600812              \n"                     \
1204         "       move    %0, $1                  \n"                     \
1205         "       .set    pop                     \n"                     \
1206         : "=r" (__treg));                                               \
1207         __treg;                                                         \
1208 })
1209
1210 #define mthi0(x)                                                        \
1211 do {                                                                    \
1212         __asm__ __volatile__(                                           \
1213         "       .set    push                                    \n"     \
1214         "       .set    noat                                    \n"     \
1215         "       move    $1, %0                                  \n"     \
1216         "       # mthi  $1, $ac0                                \n"     \
1217         "       .word   0x00200011                              \n"     \
1218         "       .set    pop                                     \n"     \
1219         :                                                               \
1220         : "r" (x));                                                     \
1221 } while (0)
1222
1223 #define mthi1(x)                                                        \
1224 do {                                                                    \
1225         __asm__ __volatile__(                                           \
1226         "       .set    push                                    \n"     \
1227         "       .set    noat                                    \n"     \
1228         "       move    $1, %0                                  \n"     \
1229         "       # mthi  $1, $ac1                                \n"     \
1230         "       .word   0x00200811                              \n"     \
1231         "       .set    pop                                     \n"     \
1232         :                                                               \
1233         : "r" (x));                                                     \
1234 } while (0)
1235
1236 #define mthi2(x)                                                        \
1237 do {                                                                    \
1238         __asm__ __volatile__(                                           \
1239         "       .set    push                                    \n"     \
1240         "       .set    noat                                    \n"     \
1241         "       move    $1, %0                                  \n"     \
1242         "       # mthi  $1, $ac2                                \n"     \
1243         "       .word   0x00201011                              \n"     \
1244         "       .set    pop                                     \n"     \
1245         :                                                               \
1246         : "r" (x));                                                     \
1247 } while (0)
1248
1249 #define mthi3(x)                                                        \
1250 do {                                                                    \
1251         __asm__ __volatile__(                                           \
1252         "       .set    push                                    \n"     \
1253         "       .set    noat                                    \n"     \
1254         "       move    $1, %0                                  \n"     \
1255         "       # mthi  $1, $ac3                                \n"     \
1256         "       .word   0x00201811                              \n"     \
1257         "       .set    pop                                     \n"     \
1258         :                                                               \
1259         : "r" (x));                                                     \
1260 } while (0)
1261
1262 #define mtlo0(x)                                                        \
1263 do {                                                                    \
1264         __asm__ __volatile__(                                           \
1265         "       .set    push                                    \n"     \
1266         "       .set    noat                                    \n"     \
1267         "       move    $1, %0                                  \n"     \
1268         "       # mtlo  $1, $ac0                                \n"     \
1269         "       .word   0x00200013                              \n"     \
1270         "       .set    pop                                     \n"     \
1271         :                                                               \
1272         : "r" (x));                                                     \
1273 } while (0)
1274
1275 #define mtlo1(x)                                                        \
1276 do {                                                                    \
1277         __asm__ __volatile__(                                           \
1278         "       .set    push                                    \n"     \
1279         "       .set    noat                                    \n"     \
1280         "       move    $1, %0                                  \n"     \
1281         "       # mtlo  $1, $ac1                                \n"     \
1282         "       .word   0x00200813                              \n"     \
1283         "       .set    pop                                     \n"     \
1284         :                                                               \
1285         : "r" (x));                                                     \
1286 } while (0)
1287
1288 #define mtlo2(x)                                                        \
1289 do {                                                                    \
1290         __asm__ __volatile__(                                           \
1291         "       .set    push                                    \n"     \
1292         "       .set    noat                                    \n"     \
1293         "       move    $1, %0                                  \n"     \
1294         "       # mtlo  $1, $ac2                                \n"     \
1295         "       .word   0x00201013                              \n"     \
1296         "       .set    pop                                     \n"     \
1297         :                                                               \
1298         : "r" (x));                                                     \
1299 } while (0)
1300
1301 #define mtlo3(x)                                                        \
1302 do {                                                                    \
1303         __asm__ __volatile__(                                           \
1304         "       .set    push                                    \n"     \
1305         "       .set    noat                                    \n"     \
1306         "       move    $1, %0                                  \n"     \
1307         "       # mtlo  $1, $ac3                                \n"     \
1308         "       .word   0x00201813                              \n"     \
1309         "       .set    pop                                     \n"     \
1310         :                                                               \
1311         : "r" (x));                                                     \
1312 } while (0)
1313
1314 #endif
1315
1316 /*
1317  * TLB operations.
1318  *
1319  * It is responsibility of the caller to take care of any TLB hazards.
1320  */
1321 static inline void tlb_probe(void)
1322 {
1323         __asm__ __volatile__(
1324                 ".set noreorder\n\t"
1325                 "tlbp\n\t"
1326                 ".set reorder");
1327 }
1328
1329 static inline void tlb_read(void)
1330 {
1331 #if MIPS34K_MISSED_ITLB_WAR
1332         int res = 0;
1333
1334         __asm__ __volatile__(
1335         "       .set    push                                    \n"
1336         "       .set    noreorder                               \n"
1337         "       .set    noat                                    \n"
1338         "       .set    mips32r2                                \n"
1339         "       .word   0x41610001              # dvpe $1       \n"
1340         "       move    %0, $1                                  \n"
1341         "       ehb                                             \n"
1342         "       .set    pop                                     \n"
1343         : "=r" (res));
1344
1345         instruction_hazard();
1346 #endif
1347
1348         __asm__ __volatile__(
1349                 ".set noreorder\n\t"
1350                 "tlbr\n\t"
1351                 ".set reorder");
1352
1353 #if MIPS34K_MISSED_ITLB_WAR
1354         if ((res & _ULCAST_(1)))
1355                 __asm__ __volatile__(
1356                 "       .set    push                            \n"
1357                 "       .set    noreorder                       \n"
1358                 "       .set    noat                            \n"
1359                 "       .set    mips32r2                        \n"
1360                 "       .word   0x41600021      # evpe          \n"
1361                 "       ehb                                     \n"
1362                 "       .set    pop                             \n");
1363 #endif
1364 }
1365
1366 static inline void tlb_write_indexed(void)
1367 {
1368         __asm__ __volatile__(
1369                 ".set noreorder\n\t"
1370                 "tlbwi\n\t"
1371                 ".set reorder");
1372 }
1373
1374 static inline void tlb_write_random(void)
1375 {
1376         __asm__ __volatile__(
1377                 ".set noreorder\n\t"
1378                 "tlbwr\n\t"
1379                 ".set reorder");
1380 }
1381
1382 /*
1383  * Manipulate bits in a c0 register.
1384  */
1385 #ifndef CONFIG_MIPS_MT_SMTC
1386 /*
1387  * SMTC Linux requires shutting-down microthread scheduling
1388  * during CP0 register read-modify-write sequences.
1389  */
1390 #define __BUILD_SET_C0(name)                                    \
1391 static inline unsigned int                                      \
1392 set_c0_##name(unsigned int set)                                 \
1393 {                                                               \
1394         unsigned int res;                                       \
1395                                                                 \
1396         res = read_c0_##name();                                 \
1397         res |= set;                                             \
1398         write_c0_##name(res);                                   \
1399                                                                 \
1400         return res;                                             \
1401 }                                                               \
1402                                                                 \
1403 static inline unsigned int                                      \
1404 clear_c0_##name(unsigned int clear)                             \
1405 {                                                               \
1406         unsigned int res;                                       \
1407                                                                 \
1408         res = read_c0_##name();                                 \
1409         res &= ~clear;                                          \
1410         write_c0_##name(res);                                   \
1411                                                                 \
1412         return res;                                             \
1413 }                                                               \
1414                                                                 \
1415 static inline unsigned int                                      \
1416 change_c0_##name(unsigned int change, unsigned int new)         \
1417 {                                                               \
1418         unsigned int res;                                       \
1419                                                                 \
1420         res = read_c0_##name();                                 \
1421         res &= ~change;                                         \
1422         res |= (new & change);                                  \
1423         write_c0_##name(res);                                   \
1424                                                                 \
1425         return res;                                             \
1426 }
1427
1428 #else /* SMTC versions that manage MT scheduling */
1429
1430 #include <linux/irqflags.h>
1431
1432 /*
1433  * This is a duplicate of dmt() in mipsmtregs.h to avoid problems with
1434  * header file recursion.
1435  */
1436 static inline unsigned int __dmt(void)
1437 {
1438         int res;
1439
1440         __asm__ __volatile__(
1441         "       .set    push                                            \n"
1442         "       .set    mips32r2                                        \n"
1443         "       .set    noat                                            \n"
1444         "       .word   0x41610BC1                      # dmt $1        \n"
1445         "       ehb                                                     \n"
1446         "       move    %0, $1                                          \n"
1447         "       .set    pop                                             \n"
1448         : "=r" (res));
1449
1450         instruction_hazard();
1451
1452         return res;
1453 }
1454
1455 #define __VPECONTROL_TE_SHIFT   15
1456 #define __VPECONTROL_TE         (1UL << __VPECONTROL_TE_SHIFT)
1457
1458 #define __EMT_ENABLE            __VPECONTROL_TE
1459
1460 static inline void __emt(unsigned int previous)
1461 {
1462         if ((previous & __EMT_ENABLE))
1463                 __asm__ __volatile__(
1464                 "       .set    mips32r2                                \n"
1465                 "       .word   0x41600be1              # emt           \n"
1466                 "       ehb                                             \n"
1467                 "       .set    mips0                                   \n");
1468 }
1469
1470 static inline void __ehb(void)
1471 {
1472         __asm__ __volatile__(
1473         "       .set    mips32r2                                        \n"
1474         "       ehb                                                     \n"             "       .set    mips0                                           \n");
1475 }
1476
1477 /*
1478  * Note that local_irq_save/restore affect TC-specific IXMT state,
1479  * not Status.IE as in non-SMTC kernel.
1480  */
1481
1482 #define __BUILD_SET_C0(name)                                    \
1483 static inline unsigned int                                      \
1484 set_c0_##name(unsigned int set)                                 \
1485 {                                                               \
1486         unsigned int res;                                       \
1487         unsigned int omt;                                       \
1488         unsigned long flags;                                    \
1489                                                                 \
1490         local_irq_save(flags);                                  \
1491         omt = __dmt();                                          \
1492         res = read_c0_##name();                                 \
1493         res |= set;                                             \
1494         write_c0_##name(res);                                   \
1495         __emt(omt);                                             \
1496         local_irq_restore(flags);                               \
1497                                                                 \
1498         return res;                                             \
1499 }                                                               \
1500                                                                 \
1501 static inline unsigned int                                      \
1502 clear_c0_##name(unsigned int clear)                             \
1503 {                                                               \
1504         unsigned int res;                                       \
1505         unsigned int omt;                                       \
1506         unsigned long flags;                                    \
1507                                                                 \
1508         local_irq_save(flags);                                  \
1509         omt = __dmt();                                          \
1510         res = read_c0_##name();                                 \
1511         res &= ~clear;                                          \
1512         write_c0_##name(res);                                   \
1513         __emt(omt);                                             \
1514         local_irq_restore(flags);                               \
1515                                                                 \
1516         return res;                                             \
1517 }                                                               \
1518                                                                 \
1519 static inline unsigned int                                      \
1520 change_c0_##name(unsigned int change, unsigned int new)         \
1521 {                                                               \
1522         unsigned int res;                                       \
1523         unsigned int omt;                                       \
1524         unsigned long flags;                                    \
1525                                                                 \
1526         local_irq_save(flags);                                  \
1527                                                                 \
1528         omt = __dmt();                                          \
1529         res = read_c0_##name();                                 \
1530         res &= ~change;                                         \
1531         res |= (new & change);                                  \
1532         write_c0_##name(res);                                   \
1533         __emt(omt);                                             \
1534         local_irq_restore(flags);                               \
1535                                                                 \
1536         return res;                                             \
1537 }
1538 #endif
1539
1540 __BUILD_SET_C0(status)
1541 __BUILD_SET_C0(cause)
1542 __BUILD_SET_C0(config)
1543 __BUILD_SET_C0(intcontrol)
1544 __BUILD_SET_C0(intctl)
1545 __BUILD_SET_C0(srsmap)
1546
1547 #endif /* !__ASSEMBLY__ */
1548
1549 #endif /* _ASM_MIPSREGS_H */