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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_8K           0x00002000
 188 #define PM_16K          0x00006000
 189 #define PM_32K          0x0000e000
 190 #define PM_64K          0x0001e000
 191 #define PM_128K         0x0003e000
 192 #define PM_256K         0x0007e000
 193 #define PM_512K         0x000fe000
 194 #define PM_1M           0x001fe000
 195 #define PM_2M           0x003fe000
 196 #define PM_4M           0x007fe000
 197 #define PM_8M           0x00ffe000
 198 #define PM_16M          0x01ffe000
 199 #define PM_32M          0x03ffe000
 200 #define PM_64M          0x07ffe000
 201 #define PM_256M         0x1fffe000
 202 #define PM_1G           0x7fffe000
 203
 204 #endif
 205
 206 /*
 207  * Default page size for a given kernel configuration
 208  */
 209 #ifdef CONFIG_PAGE_SIZE_4KB
 210 #define PM_DEFAULT_MASK PM_4K
 211 #elif defined(CONFIG_PAGE_SIZE_8KB)
 212 #define PM_DEFAULT_MASK PM_8K
 213 #elif defined(CONFIG_PAGE_SIZE_16KB)
 214 #define PM_DEFAULT_MASK PM_16K
 215 #elif defined(CONFIG_PAGE_SIZE_32KB)
 216 #define PM_DEFAULT_MASK PM_32K
 217 #elif defined(CONFIG_PAGE_SIZE_64KB)
 218 #define PM_DEFAULT_MASK PM_64K
 219 #else
 220 #error Bad page size configuration!
 221 #endif
 222
 223
 224 /*
 225  * Values used for computation of new tlb entries
 226  */
 227 #define PL_4K           12
 228 #define PL_16K          14
 229 #define PL_64K          16
 230 #define PL_256K         18
 231 #define PL_1M           20
 232 #define PL_4M           22
 233 #define PL_16M          24
 234 #define PL_64M          26
 235 #define PL_256M         28
 236
 237 /*
 238  * R4x00 interrupt enable / cause bits
 239  */
 240 #define IE_SW0          (_ULCAST_(1) <<  8)
 241 #define IE_SW1          (_ULCAST_(1) <<  9)
 242 #define IE_IRQ0         (_ULCAST_(1) << 10)
 243 #define IE_IRQ1         (_ULCAST_(1) << 11)
 244 #define IE_IRQ2         (_ULCAST_(1) << 12)
 245 #define IE_IRQ3         (_ULCAST_(1) << 13)
 246 #define IE_IRQ4         (_ULCAST_(1) << 14)
 247 #define IE_IRQ5         (_ULCAST_(1) << 15)
 248
 249 /*
 250  * R4x00 interrupt cause bits
 251  */
 252 #define C_SW0           (_ULCAST_(1) <<  8)
 253 #define C_SW1           (_ULCAST_(1) <<  9)
 254 #define C_IRQ0          (_ULCAST_(1) << 10)
 255 #define C_IRQ1          (_ULCAST_(1) << 11)
 256 #define C_IRQ2          (_ULCAST_(1) << 12)
 257 #define C_IRQ3          (_ULCAST_(1) << 13)
 258 #define C_IRQ4          (_ULCAST_(1) << 14)
 259 #define C_IRQ5          (_ULCAST_(1) << 15)
 260
 261 /*
 262  * Bitfields in the R4xx0 cp0 status register
 263  */
 264 #define ST0_IE                  0x00000001
 265 #define ST0_EXL                 0x00000002
 266 #define ST0_ERL                 0x00000004
 267 #define ST0_KSU                 0x00000018
 268 #  define KSU_USER              0x00000010
 269 #  define KSU_SUPERVISOR        0x00000008
 270 #  define KSU_KERNEL            0x00000000
 271 #define ST0_UX                  0x00000020
 272 #define ST0_SX                  0x00000040
 273 #define ST0_KX                  0x00000080
 274 #define ST0_DE                  0x00010000
 275 #define ST0_CE                  0x00020000
 276
 277 /*
 278  * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
 279  * cacheops in userspace.  This bit exists only on RM7000 and RM9000
 280  * processors.
 281  */
 282 #define ST0_CO                  0x08000000
 283
 284 /*
 285  * Bitfields in the R[23]000 cp0 status register.
 286  */
 287 #define ST0_IEC                 0x00000001
 288 #define ST0_KUC                 0x00000002
 289 #define ST0_IEP                 0x00000004
 290 #define ST0_KUP                 0x00000008
 291 #define ST0_IEO                 0x00000010
 292 #define ST0_KUO                 0x00000020
 293 /* bits 6 & 7 are reserved on R[23]000 */
 294 #define ST0_ISC                 0x00010000
 295 #define ST0_SWC                 0x00020000
 296 #define ST0_CM                  0x00080000
 297
 298 /*
 299  * Bits specific to the R4640/R4650
 300  */
 301 #define ST0_UM                  (_ULCAST_(1) <<  4)
 302 #define ST0_IL                  (_ULCAST_(1) << 23)
 303 #define ST0_DL                  (_ULCAST_(1) << 24)
 304
 305 /*
 306  * Enable the MIPS MDMX and DSP ASEs
 307  */
 308 #define ST0_MX                  0x01000000
 309
 310 /*
 311  * Bitfields in the TX39 family CP0 Configuration Register 3
 312  */
 313 #define TX39_CONF_ICS_SHIFT     19
 314 #define TX39_CONF_ICS_MASK      0x00380000
 315 #define TX39_CONF_ICS_1KB       0x00000000
 316 #define TX39_CONF_ICS_2KB       0x00080000
 317 #define TX39_CONF_ICS_4KB       0x00100000
 318 #define TX39_CONF_ICS_8KB       0x00180000
 319 #define TX39_CONF_ICS_16KB      0x00200000
 320
 321 #define TX39_CONF_DCS_SHIFT     16
 322 #define TX39_CONF_DCS_MASK      0x00070000
 323 #define TX39_CONF_DCS_1KB       0x00000000
 324 #define TX39_CONF_DCS_2KB       0x00010000
 325 #define TX39_CONF_DCS_4KB       0x00020000
 326 #define TX39_CONF_DCS_8KB       0x00030000
 327 #define TX39_CONF_DCS_16KB      0x00040000
 328
 329 #define TX39_CONF_CWFON         0x00004000
 330 #define TX39_CONF_WBON          0x00002000
 331 #define TX39_CONF_RF_SHIFT      10
 332 #define TX39_CONF_RF_MASK       0x00000c00
 333 #define TX39_CONF_DOZE          0x00000200
 334 #define TX39_CONF_HALT          0x00000100
 335 #define TX39_CONF_LOCK          0x00000080
 336 #define TX39_CONF_ICE           0x00000020
 337 #define TX39_CONF_DCE           0x00000010
 338 #define TX39_CONF_IRSIZE_SHIFT  2
 339 #define TX39_CONF_IRSIZE_MASK   0x0000000c
 340 #define TX39_CONF_DRSIZE_SHIFT  0
 341 #define TX39_CONF_DRSIZE_MASK   0x00000003
 342
 343 /*
 344  * Status register bits available in all MIPS CPUs.
 345  */
 346 #define ST0_IM                  0x0000ff00
 347 #define  STATUSB_IP0            8
 348 #define  STATUSF_IP0            (_ULCAST_(1) <<  8)
 349 #define  STATUSB_IP1            9
 350 #define  STATUSF_IP1            (_ULCAST_(1) <<  9)
 351 #define  STATUSB_IP2            10
 352 #define  STATUSF_IP2            (_ULCAST_(1) << 10)
 353 #define  STATUSB_IP3            11
 354 #define  STATUSF_IP3            (_ULCAST_(1) << 11)
 355 #define  STATUSB_IP4            12
 356 #define  STATUSF_IP4            (_ULCAST_(1) << 12)
 357 #define  STATUSB_IP5            13
 358 #define  STATUSF_IP5            (_ULCAST_(1) << 13)
 359 #define  STATUSB_IP6            14
 360 #define  STATUSF_IP6            (_ULCAST_(1) << 14)
 361 #define  STATUSB_IP7            15
 362 #define  STATUSF_IP7            (_ULCAST_(1) << 15)
 363 #define  STATUSB_IP8            0
 364 #define  STATUSF_IP8            (_ULCAST_(1) <<  0)
 365 #define  STATUSB_IP9            1
 366 #define  STATUSF_IP9            (_ULCAST_(1) <<  1)
 367 #define  STATUSB_IP10           2
 368 #define  STATUSF_IP10           (_ULCAST_(1) <<  2)
 369 #define  STATUSB_IP11           3
 370 #define  STATUSF_IP11           (_ULCAST_(1) <<  3)
 371 #define  STATUSB_IP12           4
 372 #define  STATUSF_IP12           (_ULCAST_(1) <<  4)
 373 #define  STATUSB_IP13           5
 374 #define  STATUSF_IP13           (_ULCAST_(1) <<  5)
 375 #define  STATUSB_IP14           6
 376 #define  STATUSF_IP14           (_ULCAST_(1) <<  6)
 377 #define  STATUSB_IP15           7
 378 #define  STATUSF_IP15           (_ULCAST_(1) <<  7)
 379 #define ST0_CH                  0x00040000
 380 #define ST0_SR                  0x00100000
 381 #define ST0_TS                  0x00200000
 382 #define ST0_BEV                 0x00400000
 383 #define ST0_RE                  0x02000000
 384 #define ST0_FR                  0x04000000
 385 #define ST0_CU                  0xf0000000
 386 #define ST0_CU0                 0x10000000
 387 #define ST0_CU1                 0x20000000
 388 #define ST0_CU2                 0x40000000
 389 #define ST0_CU3                 0x80000000
 390 #define ST0_XX                  0x80000000      /* MIPS IV naming */
 391
 392 /*
 393  * Bitfields and bit numbers in the coprocessor 0 cause register.
 394  *
 395  * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
 396  */
 397 #define  CAUSEB_EXCCODE         2
 398 #define  CAUSEF_EXCCODE         (_ULCAST_(31)  <<  2)
 399 #define  CAUSEB_IP              8
 400 #define  CAUSEF_IP              (_ULCAST_(255) <<  8)
 401 #define  CAUSEB_IP0             8
 402 #define  CAUSEF_IP0             (_ULCAST_(1)   <<  8)
 403 #define  CAUSEB_IP1             9
 404 #define  CAUSEF_IP1             (_ULCAST_(1)   <<  9)
 405 #define  CAUSEB_IP2             10
 406 #define  CAUSEF_IP2             (_ULCAST_(1)   << 10)
 407 #define  CAUSEB_IP3             11
 408 #define  CAUSEF_IP3             (_ULCAST_(1)   << 11)
 409 #define  CAUSEB_IP4             12
 410 #define  CAUSEF_IP4             (_ULCAST_(1)   << 12)
 411 #define  CAUSEB_IP5             13
 412 #define  CAUSEF_IP5             (_ULCAST_(1)   << 13)
 413 #define  CAUSEB_IP6             14
 414 #define  CAUSEF_IP6             (_ULCAST_(1)   << 14)
 415 #define  CAUSEB_IP7             15
 416 #define  CAUSEF_IP7             (_ULCAST_(1)   << 15)
 417 #define  CAUSEB_IV              23
 418 #define  CAUSEF_IV              (_ULCAST_(1)   << 23)
 419 #define  CAUSEB_CE              28
 420 #define  CAUSEF_CE              (_ULCAST_(3)   << 28)
 421 #define  CAUSEB_BD              31
 422 #define  CAUSEF_BD              (_ULCAST_(1)   << 31)
 423
 424 /*
 425  * Bits in the coprocessor 0 config register.
 426  */
 427 /* Generic bits.  */
 428 #define CONF_CM_CACHABLE_NO_WA          0
 429 #define CONF_CM_CACHABLE_WA             1
 430 #define CONF_CM_UNCACHED                2
 431 #define CONF_CM_CACHABLE_NONCOHERENT    3
 432 #define CONF_CM_CACHABLE_CE             4
 433 #define CONF_CM_CACHABLE_COW            5
 434 #define CONF_CM_CACHABLE_CUW            6
 435 #define CONF_CM_CACHABLE_ACCELERATED    7
 436 #define CONF_CM_CMASK                   7
 437 #define CONF_BE                 (_ULCAST_(1) << 15)
 438
 439 /* Bits common to various processors.  */
 440 #define CONF_CU                 (_ULCAST_(1) <<  3)
 441 #define CONF_DB                 (_ULCAST_(1) <<  4)
 442 #define CONF_IB                 (_ULCAST_(1) <<  5)
 443 #define CONF_DC                 (_ULCAST_(7) <<  6)
 444 #define CONF_IC                 (_ULCAST_(7) <<  9)
 445 #define CONF_EB                 (_ULCAST_(1) << 13)
 446 #define CONF_EM                 (_ULCAST_(1) << 14)
 447 #define CONF_SM                 (_ULCAST_(1) << 16)
 448 #define CONF_SC                 (_ULCAST_(1) << 17)
 449 #define CONF_EW                 (_ULCAST_(3) << 18)
 450 #define CONF_EP                 (_ULCAST_(15)<< 24)
 451 #define CONF_EC                 (_ULCAST_(7) << 28)
 452 #define CONF_CM                 (_ULCAST_(1) << 31)
 453
 454 /* Bits specific to the R4xx0.  */
 455 #define R4K_CONF_SW             (_ULCAST_(1) << 20)
 456 #define R4K_CONF_SS             (_ULCAST_(1) << 21)
 457 #define R4K_CONF_SB             (_ULCAST_(3) << 22)
 458
 459 /* Bits specific to the R5000.  */
 460 #define R5K_CONF_SE             (_ULCAST_(1) << 12)
 461 #define R5K_CONF_SS             (_ULCAST_(3) << 20)
 462
 463 /* Bits specific to the RM7000.  */
 464 #define RM7K_CONF_SE            (_ULCAST_(1) <<  3)
 465 #define RM7K_CONF_TE            (_ULCAST_(1) << 12)
 466 #define RM7K_CONF_CLK           (_ULCAST_(1) << 16)
 467 #define RM7K_CONF_TC            (_ULCAST_(1) << 17)
 468 #define RM7K_CONF_SI            (_ULCAST_(3) << 20)
 469 #define RM7K_CONF_SC            (_ULCAST_(1) << 31)
 470
 471 /* Bits specific to the R10000.  */
 472 #define R10K_CONF_DN            (_ULCAST_(3) <<  3)
 473 #define R10K_CONF_CT            (_ULCAST_(1) <<  5)
 474 #define R10K_CONF_PE            (_ULCAST_(1) <<  6)
 475 #define R10K_CONF_PM            (_ULCAST_(3) <<  7)
 476 #define R10K_CONF_EC            (_ULCAST_(15)<<  9)
 477 #define R10K_CONF_SB            (_ULCAST_(1) << 13)
 478 #define R10K_CONF_SK            (_ULCAST_(1) << 14)
 479 #define R10K_CONF_SS            (_ULCAST_(7) << 16)
 480 #define R10K_CONF_SC            (_ULCAST_(7) << 19)
 481 #define R10K_CONF_DC            (_ULCAST_(7) << 26)
 482 #define R10K_CONF_IC            (_ULCAST_(7) << 29)
 483
 484 /* Bits specific to the VR41xx.  */
 485 #define VR41_CONF_CS            (_ULCAST_(1) << 12)
 486 #define VR41_CONF_P4K           (_ULCAST_(1) << 13)
 487 #define VR41_CONF_BP            (_ULCAST_(1) << 16)
 488 #define VR41_CONF_M16           (_ULCAST_(1) << 20)
 489 #define VR41_CONF_AD            (_ULCAST_(1) << 23)
 490
 491 /* Bits specific to the R30xx.  */
 492 #define R30XX_CONF_FDM          (_ULCAST_(1) << 19)
 493 #define R30XX_CONF_REV          (_ULCAST_(1) << 22)
 494 #define R30XX_CONF_AC           (_ULCAST_(1) << 23)
 495 #define R30XX_CONF_RF           (_ULCAST_(1) << 24)
 496 #define R30XX_CONF_HALT         (_ULCAST_(1) << 25)
 497 #define R30XX_CONF_FPINT        (_ULCAST_(7) << 26)
 498 #define R30XX_CONF_DBR          (_ULCAST_(1) << 29)
 499 #define R30XX_CONF_SB           (_ULCAST_(1) << 30)
 500 #define R30XX_CONF_LOCK         (_ULCAST_(1) << 31)
 501
 502 /* Bits specific to the TX49.  */
 503 #define TX49_CONF_DC            (_ULCAST_(1) << 16)
 504 #define TX49_CONF_IC            (_ULCAST_(1) << 17)  /* conflict with CONF_SC */
 505 #define TX49_CONF_HALT          (_ULCAST_(1) << 18)
 506 #define TX49_CONF_CWFON         (_ULCAST_(1) << 27)
 507
 508 /* Bits specific to the MIPS32/64 PRA.  */
 509 #define MIPS_CONF_MT            (_ULCAST_(7) <<  7)
 510 #define MIPS_CONF_AR            (_ULCAST_(7) << 10)
 511 #define MIPS_CONF_AT            (_ULCAST_(3) << 13)
 512 #define MIPS_CONF_M             (_ULCAST_(1) << 31)
 513
 514 /*
 515  * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
 516  */
 517 #define MIPS_CONF1_FP           (_ULCAST_(1) <<  0)
 518 #define MIPS_CONF1_EP           (_ULCAST_(1) <<  1)
 519 #define MIPS_CONF1_CA           (_ULCAST_(1) <<  2)
 520 #define MIPS_CONF1_WR           (_ULCAST_(1) <<  3)
 521 #define MIPS_CONF1_PC           (_ULCAST_(1) <<  4)
 522 #define MIPS_CONF1_MD           (_ULCAST_(1) <<  5)
 523 #define MIPS_CONF1_C2           (_ULCAST_(1) <<  6)
 524 #define MIPS_CONF1_DA           (_ULCAST_(7) <<  7)
 525 #define MIPS_CONF1_DL           (_ULCAST_(7) << 10)
 526 #define MIPS_CONF1_DS           (_ULCAST_(7) << 13)
 527 #define MIPS_CONF1_IA           (_ULCAST_(7) << 16)
 528 #define MIPS_CONF1_IL           (_ULCAST_(7) << 19)
 529 #define MIPS_CONF1_IS           (_ULCAST_(7) << 22)
 530 #define MIPS_CONF1_TLBS         (_ULCAST_(63)<< 25)
 531
 532 #define MIPS_CONF2_SA           (_ULCAST_(15)<<  0)
 533 #define MIPS_CONF2_SL           (_ULCAST_(15)<<  4)
 534 #define MIPS_CONF2_SS           (_ULCAST_(15)<<  8)
 535 #define MIPS_CONF2_SU           (_ULCAST_(15)<< 12)
 536 #define MIPS_CONF2_TA           (_ULCAST_(15)<< 16)
 537 #define MIPS_CONF2_TL           (_ULCAST_(15)<< 20)
 538 #define MIPS_CONF2_TS           (_ULCAST_(15)<< 24)
 539 #define MIPS_CONF2_TU           (_ULCAST_(7) << 28)
 540
 541 #define MIPS_CONF3_TL           (_ULCAST_(1) <<  0)
 542 #define MIPS_CONF3_SM           (_ULCAST_(1) <<  1)
 543 #define MIPS_CONF3_MT           (_ULCAST_(1) <<  2)
 544 #define MIPS_CONF3_SP           (_ULCAST_(1) <<  4)
 545 #define MIPS_CONF3_VINT         (_ULCAST_(1) <<  5)
 546 #define MIPS_CONF3_VEIC         (_ULCAST_(1) <<  6)
 547 #define MIPS_CONF3_LPA          (_ULCAST_(1) <<  7)
 548 #define MIPS_CONF3_DSP          (_ULCAST_(1) << 10)
 549 #define MIPS_CONF3_ULRI         (_ULCAST_(1) << 13)
 550
 551 #define MIPS_CONF7_WII          (_ULCAST_(1) << 31)
 552
 553 #define MIPS_CONF7_RPS          (_ULCAST_(1) << 2)
 554
 555
 556 /*
 557  * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
 558  */
 559 #define MIPS_FPIR_S             (_ULCAST_(1) << 16)
 560 #define MIPS_FPIR_D             (_ULCAST_(1) << 17)
 561 #define MIPS_FPIR_PS            (_ULCAST_(1) << 18)
 562 #define MIPS_FPIR_3D            (_ULCAST_(1) << 19)
 563 #define MIPS_FPIR_W             (_ULCAST_(1) << 20)
 564 #define MIPS_FPIR_L             (_ULCAST_(1) << 21)
 565 #define MIPS_FPIR_F64           (_ULCAST_(1) << 22)
 566
 567 #ifndef __ASSEMBLY__
 568
 569 /*
 570  * Functions to access the R10000 performance counters.  These are basically
 571  * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
 572  * performance counter number encoded into bits 1 ... 5 of the instruction.
 573  * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
 574  * disassembler these will look like an access to sel 0 or 1.
 575  */
 576 #define read_r10k_perf_cntr(counter)                            \
 577 ({                                                              \
 578         unsigned int __res;                                     \
 579         __asm__ __volatile__(                                   \
 580         "mfpc\t%0, %1"                                          \
 581         : "=r" (__res)                                          \
 582         : "i" (counter));                                       \
 583                                                                 \
 584         __res;                                                  \
 585 })
 586
 587 #define write_r10k_perf_cntr(counter,val)                       \
 588 do {                                                            \
 589         __asm__ __volatile__(                                   \
 590         "mtpc\t%0, %1"                                          \
 591         :                                                       \
 592         : "r" (val), "i" (counter));                            \
 593 } while (0)
 594
 595 #define read_r10k_perf_event(counter)                           \
 596 ({                                                              \
 597         unsigned int __res;                                     \
 598         __asm__ __volatile__(                                   \
 599         "mfps\t%0, %1"                                          \
 600         : "=r" (__res)                                          \
 601         : "i" (counter));                                       \
 602                                                                 \
 603         __res;                                                  \
 604 })
 605
 606 #define write_r10k_perf_cntl(counter,val)                       \
 607 do {                                                            \
 608         __asm__ __volatile__(                                   \
 609         "mtps\t%0, %1"                                          \
 610         :                                                       \
 611         : "r" (val), "i" (counter));                            \
 612 } while (0)
 613
 614
 615 /*
 616  * Macros to access the system control coprocessor
 617  */
 618
 619 #define __read_32bit_c0_register(source, sel)                           \
 620 ({ int __res;                                                           \
 621         if (sel == 0)                                                   \
 622                 __asm__ __volatile__(                                   \
 623                         "mfc0\t%0, " #source "\n\t"                     \
 624                         : "=r" (__res));                                \
 625         else                                                            \
 626                 __asm__ __volatile__(                                   \
 627                         ".set\tmips32\n\t"                              \
 628                         "mfc0\t%0, " #source ", " #sel "\n\t"           \
 629                         ".set\tmips0\n\t"                               \
 630                         : "=r" (__res));                                \
 631         __res;                                                          \
 632 })
 633
 634 #define __read_64bit_c0_register(source, sel)                           \
 635 ({ unsigned long long __res;                                            \
 636         if (sizeof(unsigned long) == 4)                                 \
 637                 __res = __read_64bit_c0_split(source, sel);             \
 638         else if (sel == 0)                                              \
 639                 __asm__ __volatile__(                                   \
 640                         ".set\tmips3\n\t"                               \
 641                         "dmfc0\t%0, " #source "\n\t"                    \
 642                         ".set\tmips0"                                   \
 643                         : "=r" (__res));                                \
 644         else                                                            \
 645                 __asm__ __volatile__(                                   \
 646                         ".set\tmips64\n\t"                              \
 647                         "dmfc0\t%0, " #source ", " #sel "\n\t"          \
 648                         ".set\tmips0"                                   \
 649                         : "=r" (__res));                                \
 650         __res;                                                          \
 651 })
 652
 653 #define __write_32bit_c0_register(register, sel, value)                 \
 654 do {                                                                    \
 655         if (sel == 0)                                                   \
 656                 __asm__ __volatile__(                                   \
 657                         "mtc0\t%z0, " #register "\n\t"                  \
 658                         : : "Jr" ((unsigned int)(value)));              \
 659         else                                                            \
 660                 __asm__ __volatile__(                                   \
 661                         ".set\tmips32\n\t"                              \
 662                         "mtc0\t%z0, " #register ", " #sel "\n\t"        \
 663                         ".set\tmips0"                                   \
 664                         : : "Jr" ((unsigned int)(value)));              \
 665 } while (0)
 666
 667 #define __write_64bit_c0_register(register, sel, value)                 \
 668 do {                                                                    \
 669         if (sizeof(unsigned long) == 4)                                 \
 670                 __write_64bit_c0_split(register, sel, value);           \
 671         else if (sel == 0)                                              \
 672                 __asm__ __volatile__(                                   \
 673                         ".set\tmips3\n\t"                               \
 674                         "dmtc0\t%z0, " #register "\n\t"                 \
 675                         ".set\tmips0"                                   \
 676                         : : "Jr" (value));                              \
 677         else                                                            \
 678                 __asm__ __volatile__(                                   \
 679                         ".set\tmips64\n\t"                              \
 680                         "dmtc0\t%z0, " #register ", " #sel "\n\t"       \
 681                         ".set\tmips0"                                   \
 682                         : : "Jr" (value));                              \
 683 } while (0)
 684
 685 #define __read_ulong_c0_register(reg, sel)                              \
 686         ((sizeof(unsigned long) == 4) ?                                 \
 687         (unsigned long) __read_32bit_c0_register(reg, sel) :            \
 688         (unsigned long) __read_64bit_c0_register(reg, sel))
 689
 690 #define __write_ulong_c0_register(reg, sel, val)                        \
 691 do {                                                                    \
 692         if (sizeof(unsigned long) == 4)                                 \
 693                 __write_32bit_c0_register(reg, sel, val);               \
 694         else                                                            \
 695                 __write_64bit_c0_register(reg, sel, val);               \
 696 } while (0)
 697
 698 /*
 699  * On RM7000/RM9000 these are uses to access cop0 set 1 registers
 700  */
 701 #define __read_32bit_c0_ctrl_register(source)                           \
 702 ({ int __res;                                                           \
 703         __asm__ __volatile__(                                           \
 704                 "cfc0\t%0, " #source "\n\t"                             \
 705                 : "=r" (__res));                                        \
 706         __res;                                                          \
 707 })
 708
 709 #define __write_32bit_c0_ctrl_register(register, value)                 \
 710 do {                                                                    \
 711         __asm__ __volatile__(                                           \
 712                 "ctc0\t%z0, " #register "\n\t"                          \
 713                 : : "Jr" ((unsigned int)(value)));                      \
 714 } while (0)
 715
 716 /*
 717  * These versions are only needed for systems with more than 38 bits of
 718  * physical address space running the 32-bit kernel.  That's none atm :-)
 719  */
 720 #define __read_64bit_c0_split(source, sel)                              \
 721 ({                                                                      \
 722         unsigned long long __val;                                       \
 723         unsigned long __flags;                                          \
 724                                                                         \
 725         local_irq_save(__flags);                                        \
 726         if (sel == 0)                                                   \
 727                 __asm__ __volatile__(                                   \
 728                         ".set\tmips64\n\t"                              \
 729                         "dmfc0\t%M0, " #source "\n\t"                   \
 730                         "dsll\t%L0, %M0, 32\n\t"                        \
 731                         "dsra\t%M0, %M0, 32\n\t"                        \
 732                         "dsra\t%L0, %L0, 32\n\t"                        \
 733                         ".set\tmips0"                                   \
 734                         : "=r" (__val));                                \
 735         else                                                            \
 736                 __asm__ __volatile__(                                   \
 737                         ".set\tmips64\n\t"                              \
 738                         "dmfc0\t%M0, " #source ", " #sel "\n\t"         \
 739                         "dsll\t%L0, %M0, 32\n\t"                        \
 740                         "dsra\t%M0, %M0, 32\n\t"                        \
 741                         "dsra\t%L0, %L0, 32\n\t"                        \
 742                         ".set\tmips0"                                   \
 743                         : "=r" (__val));                                \
 744         local_irq_restore(__flags);                                     \
 745                                                                         \
 746         __val;                                                          \
 747 })
 748
 749 #define __write_64bit_c0_split(source, sel, val)                        \
 750 do {                                                                    \
 751         unsigned long __flags;                                          \
 752                                                                         \
 753         local_irq_save(__flags);                                        \
 754         if (sel == 0)                                                   \
 755                 __asm__ __volatile__(                                   \
 756                         ".set\tmips64\n\t"                              \
 757                         "dsll\t%L0, %L0, 32\n\t"                        \
 758                         "dsrl\t%L0, %L0, 32\n\t"                        \
 759                         "dsll\t%M0, %M0, 32\n\t"                        \
 760                         "or\t%L0, %L0, %M0\n\t"                         \
 761                         "dmtc0\t%L0, " #source "\n\t"                   \
 762                         ".set\tmips0"                                   \
 763                         : : "r" (val));                                 \
 764         else                                                            \
 765                 __asm__ __volatile__(                                   \
 766                         ".set\tmips64\n\t"                              \
 767                         "dsll\t%L0, %L0, 32\n\t"                        \
 768                         "dsrl\t%L0, %L0, 32\n\t"                        \
 769                         "dsll\t%M0, %M0, 32\n\t"                        \
 770                         "or\t%L0, %L0, %M0\n\t"                         \
 771                         "dmtc0\t%L0, " #source ", " #sel "\n\t"         \
 772                         ".set\tmips0"                                   \
 773                         : : "r" (val));                                 \
 774         local_irq_restore(__flags);                                     \
 775 } while (0)
 776
 777 #define read_c0_index()         __read_32bit_c0_register($0, 0)
 778 #define write_c0_index(val)     __write_32bit_c0_register($0, 0, val)
 779
 780 #define read_c0_random()        __read_32bit_c0_register($1, 0)
 781 #define write_c0_random(val)    __write_32bit_c0_register($1, 0, val)
 782
 783 #define read_c0_entrylo0()      __read_ulong_c0_register($2, 0)
 784 #define write_c0_entrylo0(val)  __write_ulong_c0_register($2, 0, val)
 785
 786 #define read_c0_entrylo1()      __read_ulong_c0_register($3, 0)
 787 #define write_c0_entrylo1(val)  __write_ulong_c0_register($3, 0, val)
 788
 789 #define read_c0_conf()          __read_32bit_c0_register($3, 0)
 790 #define write_c0_conf(val)      __write_32bit_c0_register($3, 0, val)
 791
 792 #define read_c0_context()       __read_ulong_c0_register($4, 0)
 793 #define write_c0_context(val)   __write_ulong_c0_register($4, 0, val)
 794
 795 #define read_c0_userlocal()     __read_ulong_c0_register($4, 2)
 796 #define write_c0_userlocal(val) __write_ulong_c0_register($4, 2, val)
 797
 798 #define read_c0_pagemask()      __read_32bit_c0_register($5, 0)
 799 #define write_c0_pagemask(val)  __write_32bit_c0_register($5, 0, val)
 800
 801 #define read_c0_wired()         __read_32bit_c0_register($6, 0)
 802 #define write_c0_wired(val)     __write_32bit_c0_register($6, 0, val)
 803
 804 #define read_c0_info()          __read_32bit_c0_register($7, 0)
 805
 806 #define read_c0_cache()         __read_32bit_c0_register($7, 0) /* TX39xx */
 807 #define write_c0_cache(val)     __write_32bit_c0_register($7, 0, val)
 808
 809 #define read_c0_badvaddr()      __read_ulong_c0_register($8, 0)
 810 #define write_c0_badvaddr(val)  __write_ulong_c0_register($8, 0, val)
 811
 812 #define read_c0_count()         __read_32bit_c0_register($9, 0)
 813 #define write_c0_count(val)     __write_32bit_c0_register($9, 0, val)
 814
 815 #define read_c0_count2()        __read_32bit_c0_register($9, 6) /* pnx8550 */
 816 #define write_c0_count2(val)    __write_32bit_c0_register($9, 6, val)
 817
 818 #define read_c0_count3()        __read_32bit_c0_register($9, 7) /* pnx8550 */
 819 #define write_c0_count3(val)    __write_32bit_c0_register($9, 7, val)
 820
 821 #define read_c0_entryhi()       __read_ulong_c0_register($10, 0)
 822 #define write_c0_entryhi(val)   __write_ulong_c0_register($10, 0, val)
 823
 824 #define read_c0_compare()       __read_32bit_c0_register($11, 0)
 825 #define write_c0_compare(val)   __write_32bit_c0_register($11, 0, val)
 826
 827 #define read_c0_compare2()      __read_32bit_c0_register($11, 6) /* pnx8550 */
 828 #define write_c0_compare2(val)  __write_32bit_c0_register($11, 6, val)
 829
 830 #define read_c0_compare3()      __read_32bit_c0_register($11, 7) /* pnx8550 */
 831 #define write_c0_compare3(val)  __write_32bit_c0_register($11, 7, val)
 832
 833 #define read_c0_status()        __read_32bit_c0_register($12, 0)
 834 #ifdef CONFIG_MIPS_MT_SMTC
 835 #define write_c0_status(val)                                            \
 836 do {                                                                    \
 837         __write_32bit_c0_register($12, 0, val);                         \
 838         __ehb();                                                        \
 839 } while (0)
 840 #else
 841 /*
 842  * Legacy non-SMTC code, which may be hazardous
 843  * but which might not support EHB
 844  */
 845 #define write_c0_status(val)    __write_32bit_c0_register($12, 0, val)
 846 #endif /* CONFIG_MIPS_MT_SMTC */
 847
 848 #define read_c0_cause()         __read_32bit_c0_register($13, 0)
 849 #define write_c0_cause(val)     __write_32bit_c0_register($13, 0, val)
 850
 851 #define read_c0_epc()           __read_ulong_c0_register($14, 0)
 852 #define write_c0_epc(val)       __write_ulong_c0_register($14, 0, val)
 853
 854 #define read_c0_prid()          __read_32bit_c0_register($15, 0)
 855
 856 #define read_c0_config()        __read_32bit_c0_register($16, 0)
 857 #define read_c0_config1()       __read_32bit_c0_register($16, 1)
 858 #define read_c0_config2()       __read_32bit_c0_register($16, 2)
 859 #define read_c0_config3()       __read_32bit_c0_register($16, 3)
 860 #define read_c0_config4()       __read_32bit_c0_register($16, 4)
 861 #define read_c0_config5()       __read_32bit_c0_register($16, 5)
 862 #define read_c0_config6()       __read_32bit_c0_register($16, 6)
 863 #define read_c0_config7()       __read_32bit_c0_register($16, 7)
 864 #define write_c0_config(val)    __write_32bit_c0_register($16, 0, val)
 865 #define write_c0_config1(val)   __write_32bit_c0_register($16, 1, val)
 866 #define write_c0_config2(val)   __write_32bit_c0_register($16, 2, val)
 867 #define write_c0_config3(val)   __write_32bit_c0_register($16, 3, val)
 868 #define write_c0_config4(val)   __write_32bit_c0_register($16, 4, val)
 869 #define write_c0_config5(val)   __write_32bit_c0_register($16, 5, val)
 870 #define write_c0_config6(val)   __write_32bit_c0_register($16, 6, val)
 871 #define write_c0_config7(val)   __write_32bit_c0_register($16, 7, val)
 872
 873 /*
 874  * The WatchLo register.  There may be upto 8 of them.
 875  */
 876 #define read_c0_watchlo0()      __read_ulong_c0_register($18, 0)
 877 #define read_c0_watchlo1()      __read_ulong_c0_register($18, 1)
 878 #define read_c0_watchlo2()      __read_ulong_c0_register($18, 2)
 879 #define read_c0_watchlo3()      __read_ulong_c0_register($18, 3)
 880 #define read_c0_watchlo4()      __read_ulong_c0_register($18, 4)
 881 #define read_c0_watchlo5()      __read_ulong_c0_register($18, 5)
 882 #define read_c0_watchlo6()      __read_ulong_c0_register($18, 6)
 883 #define read_c0_watchlo7()      __read_ulong_c0_register($18, 7)
 884 #define write_c0_watchlo0(val)  __write_ulong_c0_register($18, 0, val)
 885 #define write_c0_watchlo1(val)  __write_ulong_c0_register($18, 1, val)
 886 #define write_c0_watchlo2(val)  __write_ulong_c0_register($18, 2, val)
 887 #define write_c0_watchlo3(val)  __write_ulong_c0_register($18, 3, val)
 888 #define write_c0_watchlo4(val)  __write_ulong_c0_register($18, 4, val)
 889 #define write_c0_watchlo5(val)  __write_ulong_c0_register($18, 5, val)
 890 #define write_c0_watchlo6(val)  __write_ulong_c0_register($18, 6, val)
 891 #define write_c0_watchlo7(val)  __write_ulong_c0_register($18, 7, val)
 892
 893 /*
 894  * The WatchHi register.  There may be upto 8 of them.
 895  */
 896 #define read_c0_watchhi0()      __read_32bit_c0_register($19, 0)
 897 #define read_c0_watchhi1()      __read_32bit_c0_register($19, 1)
 898 #define read_c0_watchhi2()      __read_32bit_c0_register($19, 2)
 899 #define read_c0_watchhi3()      __read_32bit_c0_register($19, 3)
 900 #define read_c0_watchhi4()      __read_32bit_c0_register($19, 4)
 901 #define read_c0_watchhi5()      __read_32bit_c0_register($19, 5)
 902 #define read_c0_watchhi6()      __read_32bit_c0_register($19, 6)
 903 #define read_c0_watchhi7()      __read_32bit_c0_register($19, 7)
 904
 905 #define write_c0_watchhi0(val)  __write_32bit_c0_register($19, 0, val)
 906 #define write_c0_watchhi1(val)  __write_32bit_c0_register($19, 1, val)
 907 #define write_c0_watchhi2(val)  __write_32bit_c0_register($19, 2, val)
 908 #define write_c0_watchhi3(val)  __write_32bit_c0_register($19, 3, val)
 909 #define write_c0_watchhi4(val)  __write_32bit_c0_register($19, 4, val)
 910 #define write_c0_watchhi5(val)  __write_32bit_c0_register($19, 5, val)
 911 #define write_c0_watchhi6(val)  __write_32bit_c0_register($19, 6, val)
 912 #define write_c0_watchhi7(val)  __write_32bit_c0_register($19, 7, val)
 913
 914 #define read_c0_xcontext()      __read_ulong_c0_register($20, 0)
 915 #define write_c0_xcontext(val)  __write_ulong_c0_register($20, 0, val)
 916
 917 #define read_c0_intcontrol()    __read_32bit_c0_ctrl_register($20)
 918 #define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)
 919
 920 #define read_c0_framemask()     __read_32bit_c0_register($21, 0)
 921 #define write_c0_framemask(val) __write_32bit_c0_register($21, 0, val)
 922
 923 /* RM9000 PerfControl performance counter control register */
 924 #define read_c0_perfcontrol()   __read_32bit_c0_register($22, 0)
 925 #define write_c0_perfcontrol(val) __write_32bit_c0_register($22, 0, val)
 926
 927 #define read_c0_diag()          __read_32bit_c0_register($22, 0)
 928 #define write_c0_diag(val)      __write_32bit_c0_register($22, 0, val)
 929
 930 #define read_c0_diag1()         __read_32bit_c0_register($22, 1)
 931 #define write_c0_diag1(val)     __write_32bit_c0_register($22, 1, val)
 932
 933 #define read_c0_diag2()         __read_32bit_c0_register($22, 2)
 934 #define write_c0_diag2(val)     __write_32bit_c0_register($22, 2, val)
 935
 936 #define read_c0_diag3()         __read_32bit_c0_register($22, 3)
 937 #define write_c0_diag3(val)     __write_32bit_c0_register($22, 3, val)
 938
 939 #define read_c0_diag4()         __read_32bit_c0_register($22, 4)
 940 #define write_c0_diag4(val)     __write_32bit_c0_register($22, 4, val)
 941
 942 #define read_c0_diag5()         __read_32bit_c0_register($22, 5)
 943 #define write_c0_diag5(val)     __write_32bit_c0_register($22, 5, val)
 944
 945 #define read_c0_debug()         __read_32bit_c0_register($23, 0)
 946 #define write_c0_debug(val)     __write_32bit_c0_register($23, 0, val)
 947
 948 #define read_c0_depc()          __read_ulong_c0_register($24, 0)
 949 #define write_c0_depc(val)      __write_ulong_c0_register($24, 0, val)
 950
 951 /*
 952  * MIPS32 / MIPS64 performance counters
 953  */
 954 #define read_c0_perfctrl0()     __read_32bit_c0_register($25, 0)
 955 #define write_c0_perfctrl0(val) __write_32bit_c0_register($25, 0, val)
 956 #define read_c0_perfcntr0()     __read_32bit_c0_register($25, 1)
 957 #define write_c0_perfcntr0(val) __write_32bit_c0_register($25, 1, val)
 958 #define read_c0_perfctrl1()     __read_32bit_c0_register($25, 2)
 959 #define write_c0_perfctrl1(val) __write_32bit_c0_register($25, 2, val)
 960 #define read_c0_perfcntr1()     __read_32bit_c0_register($25, 3)
 961 #define write_c0_perfcntr1(val) __write_32bit_c0_register($25, 3, val)
 962 #define read_c0_perfctrl2()     __read_32bit_c0_register($25, 4)
 963 #define write_c0_perfctrl2(val) __write_32bit_c0_register($25, 4, val)
 964 #define read_c0_perfcntr2()     __read_32bit_c0_register($25, 5)
 965 #define write_c0_perfcntr2(val) __write_32bit_c0_register($25, 5, val)
 966 #define read_c0_perfctrl3()     __read_32bit_c0_register($25, 6)
 967 #define write_c0_perfctrl3(val) __write_32bit_c0_register($25, 6, val)
 968 #define read_c0_perfcntr3()     __read_32bit_c0_register($25, 7)
 969 #define write_c0_perfcntr3(val) __write_32bit_c0_register($25, 7, val)
 970
 971 /* RM9000 PerfCount performance counter register */
 972 #define read_c0_perfcount()     __read_64bit_c0_register($25, 0)
 973 #define write_c0_perfcount(val) __write_64bit_c0_register($25, 0, val)
 974
 975 #define read_c0_ecc()           __read_32bit_c0_register($26, 0)
 976 #define write_c0_ecc(val)       __write_32bit_c0_register($26, 0, val)
 977
 978 #define read_c0_derraddr0()     __read_ulong_c0_register($26, 1)
 979 #define write_c0_derraddr0(val) __write_ulong_c0_register($26, 1, val)
 980
 981 #define read_c0_cacheerr()      __read_32bit_c0_register($27, 0)
 982
 983 #define read_c0_derraddr1()     __read_ulong_c0_register($27, 1)
 984 #define write_c0_derraddr1(val) __write_ulong_c0_register($27, 1, val)
 985
 986 #define read_c0_taglo()         __read_32bit_c0_register($28, 0)
 987 #define write_c0_taglo(val)     __write_32bit_c0_register($28, 0, val)
 988
 989 #define read_c0_dtaglo()        __read_32bit_c0_register($28, 2)
 990 #define write_c0_dtaglo(val)    __write_32bit_c0_register($28, 2, val)
 991
 992 #define read_c0_taghi()         __read_32bit_c0_register($29, 0)
 993 #define write_c0_taghi(val)     __write_32bit_c0_register($29, 0, val)
 994
 995 #define read_c0_errorepc()      __read_ulong_c0_register($30, 0)
 996 #define write_c0_errorepc(val)  __write_ulong_c0_register($30, 0, val)
 997
 998 /* MIPSR2 */
 999 #define read_c0_hwrena()        __read_32bit_c0_register($7, 0)
1000 #define write_c0_hwrena(val)    __write_32bit_c0_register($7, 0, val)
1001
1002 #define read_c0_intctl()        __read_32bit_c0_register($12, 1)
1003 #define write_c0_intctl(val)    __write_32bit_c0_register($12, 1, val)
1004
1005 #define read_c0_srsctl()        __read_32bit_c0_register($12, 2)
1006 #define write_c0_srsctl(val)    __write_32bit_c0_register($12, 2, val)
1007
1008 #define read_c0_srsmap()        __read_32bit_c0_register($12, 3)
1009 #define write_c0_srsmap(val)    __write_32bit_c0_register($12, 3, val)
1010
1011 #define read_c0_ebase()         __read_32bit_c0_register($15, 1)
1012 #define write_c0_ebase(val)     __write_32bit_c0_register($15, 1, val)
1013
1014
1015 /* Cavium OCTEON (cnMIPS) */
1016 #define read_c0_cvmcount()      __read_ulong_c0_register($9, 6)
1017 #define write_c0_cvmcount(val)  __write_ulong_c0_register($9, 6, val)
1018
1019 #define read_c0_cvmctl()        __read_64bit_c0_register($9, 7)
1020 #define write_c0_cvmctl(val)    __write_64bit_c0_register($9, 7, val)
1021
1022 #define read_c0_cvmmemctl()     __read_64bit_c0_register($11, 7)
1023 #define write_c0_cvmmemctl(val) __write_64bit_c0_register($11, 7, val)
1024 /*
1025  * The cacheerr registers are not standardized.  On OCTEON, they are
1026  * 64 bits wide.
1027  */
1028 #define read_octeon_c0_icacheerr()      __read_64bit_c0_register($27, 0)
1029 #define write_octeon_c0_icacheerr(val)  __write_64bit_c0_register($27, 0, val)
1030
1031 #define read_octeon_c0_dcacheerr()      __read_64bit_c0_register($27, 1)
1032 #define write_octeon_c0_dcacheerr(val)  __write_64bit_c0_register($27, 1, val)
1033
1034 /*
1035  * Macros to access the floating point coprocessor control registers
1036  */
1037 #define read_32bit_cp1_register(source)                         \
1038 ({ int __res;                                                   \
1039         __asm__ __volatile__(                                   \
1040         ".set\tpush\n\t"                                        \
1041         ".set\treorder\n\t"                                     \
1042         /* gas fails to assemble cfc1 for some archs (octeon).*/ \
1043         ".set\tmips1\n\t"                                       \
1044         "cfc1\t%0,"STR(source)"\n\t"                            \
1045         ".set\tpop"                                             \
1046         : "=r" (__res));                                        \
1047         __res;})
1048
1049 #define rddsp(mask)                                                     \
1050 ({                                                                      \
1051         unsigned int __res;                                             \
1052                                                                         \
1053         __asm__ __volatile__(                                           \
1054         "       .set    push                            \n"             \
1055         "       .set    noat                            \n"             \
1056         "       # rddsp $1, %x1                         \n"             \
1057         "       .word   0x7c000cb8 | (%x1 << 16)        \n"             \
1058         "       move    %0, $1                          \n"             \
1059         "       .set    pop                             \n"             \
1060         : "=r" (__res)                                                  \
1061         : "i" (mask));                                                  \
1062         __res;                                                          \
1063 })
1064
1065 #define wrdsp(val, mask)                                                \
1066 do {                                                                    \
1067         __asm__ __volatile__(                                           \
1068         "       .set    push                                    \n"     \
1069         "       .set    noat                                    \n"     \
1070         "       move    $1, %0                                  \n"     \
1071         "       # wrdsp $1, %x1                                 \n"     \
1072         "       .word   0x7c2004f8 | (%x1 << 11)                \n"     \
1073         "       .set    pop                                     \n"     \
1074         :                                                               \
1075         : "r" (val), "i" (mask));                                       \
1076 } while (0)
1077
1078 #if 0   /* Need DSP ASE capable assembler ... */
1079 #define mflo0() ({ long mflo0; __asm__("mflo %0, $ac0" : "=r" (mflo0)); mflo0;})
1080 #define mflo1() ({ long mflo1; __asm__("mflo %0, $ac1" : "=r" (mflo1)); mflo1;})
1081 #define mflo2() ({ long mflo2; __asm__("mflo %0, $ac2" : "=r" (mflo2)); mflo2;})
1082 #define mflo3() ({ long mflo3; __asm__("mflo %0, $ac3" : "=r" (mflo3)); mflo3;})
1083
1084 #define mfhi0() ({ long mfhi0; __asm__("mfhi %0, $ac0" : "=r" (mfhi0)); mfhi0;})
1085 #define mfhi1() ({ long mfhi1; __asm__("mfhi %0, $ac1" : "=r" (mfhi1)); mfhi1;})
1086 #define mfhi2() ({ long mfhi2; __asm__("mfhi %0, $ac2" : "=r" (mfhi2)); mfhi2;})
1087 #define mfhi3() ({ long mfhi3; __asm__("mfhi %0, $ac3" : "=r" (mfhi3)); mfhi3;})
1088
1089 #define mtlo0(x) __asm__("mtlo %0, $ac0" ::"r" (x))
1090 #define mtlo1(x) __asm__("mtlo %0, $ac1" ::"r" (x))
1091 #define mtlo2(x) __asm__("mtlo %0, $ac2" ::"r" (x))
1092 #define mtlo3(x) __asm__("mtlo %0, $ac3" ::"r" (x))
1093
1094 #define mthi0(x) __asm__("mthi %0, $ac0" ::"r" (x))
1095 #define mthi1(x) __asm__("mthi %0, $ac1" ::"r" (x))
1096 #define mthi2(x) __asm__("mthi %0, $ac2" ::"r" (x))
1097 #define mthi3(x) __asm__("mthi %0, $ac3" ::"r" (x))
1098
1099 #else
1100
1101 #define mfhi0()                                                         \
1102 ({                                                                      \
1103         unsigned long __treg;                                           \
1104                                                                         \
1105         __asm__ __volatile__(                                           \
1106         "       .set    push                    \n"                     \
1107         "       .set    noat                    \n"                     \
1108         "       # mfhi  %0, $ac0                \n"                     \
1109         "       .word   0x00000810              \n"                     \
1110         "       move    %0, $1                  \n"                     \
1111         "       .set    pop                     \n"                     \
1112         : "=r" (__treg));                                               \
1113         __treg;                                                         \
1114 })
1115
1116 #define mfhi1()                                                         \
1117 ({                                                                      \
1118         unsigned long __treg;                                           \
1119                                                                         \
1120         __asm__ __volatile__(                                           \
1121         "       .set    push                    \n"                     \
1122         "       .set    noat                    \n"                     \
1123         "       # mfhi  %0, $ac1                \n"                     \
1124         "       .word   0x00200810              \n"                     \
1125         "       move    %0, $1                  \n"                     \
1126         "       .set    pop                     \n"                     \
1127         : "=r" (__treg));                                               \
1128         __treg;                                                         \
1129 })
1130
1131 #define mfhi2()                                                         \
1132 ({                                                                      \
1133         unsigned long __treg;                                           \
1134                                                                         \
1135         __asm__ __volatile__(                                           \
1136         "       .set    push                    \n"                     \
1137         "       .set    noat                    \n"                     \
1138         "       # mfhi  %0, $ac2                \n"                     \
1139         "       .word   0x00400810              \n"                     \
1140         "       move    %0, $1                  \n"                     \
1141         "       .set    pop                     \n"                     \
1142         : "=r" (__treg));                                               \
1143         __treg;                                                         \
1144 })
1145
1146 #define mfhi3()                                                         \
1147 ({                                                                      \
1148         unsigned long __treg;                                           \
1149                                                                         \
1150         __asm__ __volatile__(                                           \
1151         "       .set    push                    \n"                     \
1152         "       .set    noat                    \n"                     \
1153         "       # mfhi  %0, $ac3                \n"                     \
1154         "       .word   0x00600810              \n"                     \
1155         "       move    %0, $1                  \n"                     \
1156         "       .set    pop                     \n"                     \
1157         : "=r" (__treg));                                               \
1158         __treg;                                                         \
1159 })
1160
1161 #define mflo0()                                                         \
1162 ({                                                                      \
1163         unsigned long __treg;                                           \
1164                                                                         \
1165         __asm__ __volatile__(                                           \
1166         "       .set    push                    \n"                     \
1167         "       .set    noat                    \n"                     \
1168         "       # mflo  %0, $ac0                \n"                     \
1169         "       .word   0x00000812              \n"                     \
1170         "       move    %0, $1                  \n"                     \
1171         "       .set    pop                     \n"                     \
1172         : "=r" (__treg));                                               \
1173         __treg;                                                         \
1174 })
1175
1176 #define mflo1()                                                         \
1177 ({                                                                      \
1178         unsigned long __treg;                                           \
1179                                                                         \
1180         __asm__ __volatile__(                                           \
1181         "       .set    push                    \n"                     \
1182         "       .set    noat                    \n"                     \
1183         "       # mflo  %0, $ac1                \n"                     \
1184         "       .word   0x00200812              \n"                     \
1185         "       move    %0, $1                  \n"                     \
1186         "       .set    pop                     \n"                     \
1187         : "=r" (__treg));                                               \
1188         __treg;                                                         \
1189 })
1190
1191 #define mflo2()                                                         \
1192 ({                                                                      \
1193         unsigned long __treg;                                           \
1194                                                                         \
1195         __asm__ __volatile__(                                           \
1196         "       .set    push                    \n"                     \
1197         "       .set    noat                    \n"                     \
1198         "       # mflo  %0, $ac2                \n"                     \
1199         "       .word   0x00400812              \n"                     \
1200         "       move    %0, $1                  \n"                     \
1201         "       .set    pop                     \n"                     \
1202         : "=r" (__treg));                                               \
1203         __treg;                                                         \
1204 })
1205
1206 #define mflo3()                                                         \
1207 ({                                                                      \
1208         unsigned long __treg;                                           \
1209                                                                         \
1210         __asm__ __volatile__(                                           \
1211         "       .set    push                    \n"                     \
1212         "       .set    noat                    \n"                     \
1213         "       # mflo  %0, $ac3                \n"                     \
1214         "       .word   0x00600812              \n"                     \
1215         "       move    %0, $1                  \n"                     \
1216         "       .set    pop                     \n"                     \
1217         : "=r" (__treg));                                               \
1218         __treg;                                                         \
1219 })
1220
1221 #define mthi0(x)                                                        \
1222 do {                                                                    \
1223         __asm__ __volatile__(                                           \
1224         "       .set    push                                    \n"     \
1225         "       .set    noat                                    \n"     \
1226         "       move    $1, %0                                  \n"     \
1227         "       # mthi  $1, $ac0                                \n"     \
1228         "       .word   0x00200011                              \n"     \
1229         "       .set    pop                                     \n"     \
1230         :                                                               \
1231         : "r" (x));                                                     \
1232 } while (0)
1233
1234 #define mthi1(x)                                                        \
1235 do {                                                                    \
1236         __asm__ __volatile__(                                           \
1237         "       .set    push                                    \n"     \
1238         "       .set    noat                                    \n"     \
1239         "       move    $1, %0                                  \n"     \
1240         "       # mthi  $1, $ac1                                \n"     \
1241         "       .word   0x00200811                              \n"     \
1242         "       .set    pop                                     \n"     \
1243         :                                                               \
1244         : "r" (x));                                                     \
1245 } while (0)
1246
1247 #define mthi2(x)                                                        \
1248 do {                                                                    \
1249         __asm__ __volatile__(                                           \
1250         "       .set    push                                    \n"     \
1251         "       .set    noat                                    \n"     \
1252         "       move    $1, %0                                  \n"     \
1253         "       # mthi  $1, $ac2                                \n"     \
1254         "       .word   0x00201011                              \n"     \
1255         "       .set    pop                                     \n"     \
1256         :                                                               \
1257         : "r" (x));                                                     \
1258 } while (0)
1259
1260 #define mthi3(x)                                                        \
1261 do {                                                                    \
1262         __asm__ __volatile__(                                           \
1263         "       .set    push                                    \n"     \
1264         "       .set    noat                                    \n"     \
1265         "       move    $1, %0                                  \n"     \
1266         "       # mthi  $1, $ac3                                \n"     \
1267         "       .word   0x00201811                              \n"     \
1268         "       .set    pop                                     \n"     \
1269         :                                                               \
1270         : "r" (x));                                                     \
1271 } while (0)
1272
1273 #define mtlo0(x)                                                        \
1274 do {                                                                    \
1275         __asm__ __volatile__(                                           \
1276         "       .set    push                                    \n"     \
1277         "       .set    noat                                    \n"     \
1278         "       move    $1, %0                                  \n"     \
1279         "       # mtlo  $1, $ac0                                \n"     \
1280         "       .word   0x00200013                              \n"     \
1281         "       .set    pop                                     \n"     \
1282         :                                                               \
1283         : "r" (x));                                                     \
1284 } while (0)
1285
1286 #define mtlo1(x)                                                        \
1287 do {                                                                    \
1288         __asm__ __volatile__(                                           \
1289         "       .set    push                                    \n"     \
1290         "       .set    noat                                    \n"     \
1291         "       move    $1, %0                                  \n"     \
1292         "       # mtlo  $1, $ac1                                \n"     \
1293         "       .word   0x00200813                              \n"     \
1294         "       .set    pop                                     \n"     \
1295         :                                                               \
1296         : "r" (x));                                                     \
1297 } while (0)
1298
1299 #define mtlo2(x)                                                        \
1300 do {                                                                    \
1301         __asm__ __volatile__(                                           \
1302         "       .set    push                                    \n"     \
1303         "       .set    noat                                    \n"     \
1304         "       move    $1, %0                                  \n"     \
1305         "       # mtlo  $1, $ac2                                \n"     \
1306         "       .word   0x00201013                              \n"     \
1307         "       .set    pop                                     \n"     \
1308         :                                                               \
1309         : "r" (x));                                                     \
1310 } while (0)
1311
1312 #define mtlo3(x)                                                        \
1313 do {                                                                    \
1314         __asm__ __volatile__(                                           \
1315         "       .set    push                                    \n"     \
1316         "       .set    noat                                    \n"     \
1317         "       move    $1, %0                                  \n"     \
1318         "       # mtlo  $1, $ac3                                \n"     \
1319         "       .word   0x00201813                              \n"     \
1320         "       .set    pop                                     \n"     \
1321         :                                                               \
1322         : "r" (x));                                                     \
1323 } while (0)
1324
1325 #endif
1326
1327 /*
1328  * TLB operations.
1329  *
1330  * It is responsibility of the caller to take care of any TLB hazards.
1331  */
1332 static inline void tlb_probe(void)
1333 {
1334         __asm__ __volatile__(
1335                 ".set noreorder\n\t"
1336                 "tlbp\n\t"
1337                 ".set reorder");
1338 }
1339
1340 static inline void tlb_read(void)
1341 {
1342 #if MIPS34K_MISSED_ITLB_WAR
1343         int res = 0;
1344
1345         __asm__ __volatile__(
1346         "       .set    push                                    \n"
1347         "       .set    noreorder                               \n"
1348         "       .set    noat                                    \n"
1349         "       .set    mips32r2                                \n"
1350         "       .word   0x41610001              # dvpe $1       \n"
1351         "       move    %0, $1                                  \n"
1352         "       ehb                                             \n"
1353         "       .set    pop                                     \n"
1354         : "=r" (res));
1355
1356         instruction_hazard();
1357 #endif
1358
1359         __asm__ __volatile__(
1360                 ".set noreorder\n\t"
1361                 "tlbr\n\t"
1362                 ".set reorder");
1363
1364 #if MIPS34K_MISSED_ITLB_WAR
1365         if ((res & _ULCAST_(1)))
1366                 __asm__ __volatile__(
1367                 "       .set    push                            \n"
1368                 "       .set    noreorder                       \n"
1369                 "       .set    noat                            \n"
1370                 "       .set    mips32r2                        \n"
1371                 "       .word   0x41600021      # evpe          \n"
1372                 "       ehb                                     \n"
1373                 "       .set    pop                             \n");
1374 #endif
1375 }
1376
1377 static inline void tlb_write_indexed(void)
1378 {
1379         __asm__ __volatile__(
1380                 ".set noreorder\n\t"
1381                 "tlbwi\n\t"
1382                 ".set reorder");
1383 }
1384
1385 static inline void tlb_write_random(void)
1386 {
1387         __asm__ __volatile__(
1388                 ".set noreorder\n\t"
1389                 "tlbwr\n\t"
1390                 ".set reorder");
1391 }
1392
1393 /*
1394  * Manipulate bits in a c0 register.
1395  */
1396 #ifndef CONFIG_MIPS_MT_SMTC
1397 /*
1398  * SMTC Linux requires shutting-down microthread scheduling
1399  * during CP0 register read-modify-write sequences.
1400  */
1401 #define __BUILD_SET_C0(name)                                    \
1402 static inline unsigned int                                      \
1403 set_c0_##name(unsigned int set)                                 \
1404 {                                                               \
1405         unsigned int res, new;                                  \
1406                                                                 \
1407         res = read_c0_##name();                                 \
1408         new = res | set;                                        \
1409         write_c0_##name(new);                                   \
1410                                                                 \
1411         return res;                                             \
1412 }                                                               \
1413                                                                 \
1414 static inline unsigned int                                      \
1415 clear_c0_##name(unsigned int clear)                             \
1416 {                                                               \
1417         unsigned int res, new;                                  \
1418                                                                 \
1419         res = read_c0_##name();                                 \
1420         new = res & ~clear;                                     \
1421         write_c0_##name(new);                                   \
1422                                                                 \
1423         return res;                                             \
1424 }                                                               \
1425                                                                 \
1426 static inline unsigned int                                      \
1427 change_c0_##name(unsigned int change, unsigned int val)         \
1428 {                                                               \
1429         unsigned int res, new;                                  \
1430                                                                 \
1431         res = read_c0_##name();                                 \
1432         new = res & ~change;                                    \
1433         new |= (val & change);                                  \
1434         write_c0_##name(new);                                   \
1435                                                                 \
1436         return res;                                             \
1437 }
1438
1439 #else /* SMTC versions that manage MT scheduling */
1440
1441 #include <linux/irqflags.h>
1442
1443 /*
1444  * This is a duplicate of dmt() in mipsmtregs.h to avoid problems with
1445  * header file recursion.
1446  */
1447 static inline unsigned int __dmt(void)
1448 {
1449         int res;
1450
1451         __asm__ __volatile__(
1452         "       .set    push                                            \n"
1453         "       .set    mips32r2                                        \n"
1454         "       .set    noat                                            \n"
1455         "       .word   0x41610BC1                      # dmt $1        \n"
1456         "       ehb                                                     \n"
1457         "       move    %0, $1                                          \n"
1458         "       .set    pop                                             \n"
1459         : "=r" (res));
1460
1461         instruction_hazard();
1462
1463         return res;
1464 }
1465
1466 #define __VPECONTROL_TE_SHIFT   15
1467 #define __VPECONTROL_TE         (1UL << __VPECONTROL_TE_SHIFT)
1468
1469 #define __EMT_ENABLE            __VPECONTROL_TE
1470
1471 static inline void __emt(unsigned int previous)
1472 {
1473         if ((previous & __EMT_ENABLE))
1474                 __asm__ __volatile__(
1475                 "       .set    mips32r2                                \n"
1476                 "       .word   0x41600be1              # emt           \n"
1477                 "       ehb                                             \n"
1478                 "       .set    mips0                                   \n");
1479 }
1480
1481 static inline void __ehb(void)
1482 {
1483         __asm__ __volatile__(
1484         "       .set    mips32r2                                        \n"
1485         "       ehb                                                     \n"             "       .set    mips0                                           \n");
1486 }
1487
1488 /*
1489  * Note that local_irq_save/restore affect TC-specific IXMT state,
1490  * not Status.IE as in non-SMTC kernel.
1491  */
1492
1493 #define __BUILD_SET_C0(name)                                    \
1494 static inline unsigned int                                      \
1495 set_c0_##name(unsigned int set)                                 \
1496 {                                                               \
1497         unsigned int res;                                       \
1498         unsigned int new;                                       \
1499         unsigned int omt;                                       \
1500         unsigned long flags;                                    \
1501                                                                 \
1502         local_irq_save(flags);                                  \
1503         omt = __dmt();                                          \
1504         res = read_c0_##name();                                 \
1505         new = res | set;                                        \
1506         write_c0_##name(new);                                   \
1507         __emt(omt);                                             \
1508         local_irq_restore(flags);                               \
1509                                                                 \
1510         return res;                                             \
1511 }                                                               \
1512                                                                 \
1513 static inline unsigned int                                      \
1514 clear_c0_##name(unsigned int clear)                             \
1515 {                                                               \
1516         unsigned int res;                                       \
1517         unsigned int new;                                       \
1518         unsigned int omt;                                       \
1519         unsigned long flags;                                    \
1520                                                                 \
1521         local_irq_save(flags);                                  \
1522         omt = __dmt();                                          \
1523         res = read_c0_##name();                                 \
1524         new = res & ~clear;                                     \
1525         write_c0_##name(new);                                   \
1526         __emt(omt);                                             \
1527         local_irq_restore(flags);                               \
1528                                                                 \
1529         return res;                                             \
1530 }                                                               \
1531                                                                 \
1532 static inline unsigned int                                      \
1533 change_c0_##name(unsigned int change, unsigned int newbits)     \
1534 {                                                               \
1535         unsigned int res;                                       \
1536         unsigned int new;                                       \
1537         unsigned int omt;                                       \
1538         unsigned long flags;                                    \
1539                                                                 \
1540         local_irq_save(flags);                                  \
1541                                                                 \
1542         omt = __dmt();                                          \
1543         res = read_c0_##name();                                 \
1544         new = res & ~change;                                    \
1545         new |= (newbits & change);                              \
1546         write_c0_##name(new);                                   \
1547         __emt(omt);                                             \
1548         local_irq_restore(flags);                               \
1549                                                                 \
1550         return res;                                             \
1551 }
1552 #endif
1553
1554 __BUILD_SET_C0(status)
1555 __BUILD_SET_C0(cause)
1556 __BUILD_SET_C0(config)
1557 __BUILD_SET_C0(intcontrol)
1558 __BUILD_SET_C0(intctl)
1559 __BUILD_SET_C0(srsmap)
1560
1561 #endif /* !__ASSEMBLY__ */
1562
1563 #endif /* _ASM_MIPSREGS_H */