include/asm-mips/mipsregs.h

   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 MIPS Technologies, Inc.  All rights reserved.
  11  * Copyright (C) 2003  Maciej W. Rozycki
  12  */
  13 #ifndef _ASM_MIPSREGS_H
  14 #define _ASM_MIPSREGS_H
  15
  16 #include <linux/config.h>
  17 #include <linux/linkage.h>
  18
  19 /*
  20  * The following macros are especially useful for __asm__
  21  * inline assembler.
  22  */
  23 #ifndef __STR
  24 #define __STR(x) #x
  25 #endif
  26 #ifndef STR
  27 #define STR(x) __STR(x)
  28 #endif
  29
  30 /*
  31  *  Configure language
  32  */
  33 #ifdef __ASSEMBLY__
  34 #define _ULCAST_
  35 #else
  36 #define _ULCAST_ (unsigned long)
  37 #endif
  38
  39 /*
  40  * Coprocessor 0 register names
  41  */
  42 #define CP0_INDEX $0
  43 #define CP0_RANDOM $1
  44 #define CP0_ENTRYLO0 $2
  45 #define CP0_ENTRYLO1 $3
  46 #define CP0_CONF $3
  47 #define CP0_CONTEXT $4
  48 #define CP0_PAGEMASK $5
  49 #define CP0_WIRED $6
  50 #define CP0_INFO $7
  51 #define CP0_BADVADDR $8
  52 #define CP0_COUNT $9
  53 #define CP0_ENTRYHI $10
  54 #define CP0_COMPARE $11
  55 #define CP0_STATUS $12
  56 #define CP0_CAUSE $13
  57 #define CP0_EPC $14
  58 #define CP0_PRID $15
  59 #define CP0_CONFIG $16
  60 #define CP0_LLADDR $17
  61 #define CP0_WATCHLO $18
  62 #define CP0_WATCHHI $19
  63 #define CP0_XCONTEXT $20
  64 #define CP0_FRAMEMASK $21
  65 #define CP0_DIAGNOSTIC $22
  66 #define CP0_DEBUG $23
  67 #define CP0_DEPC $24
  68 #define CP0_PERFORMANCE $25
  69 #define CP0_ECC $26
  70 #define CP0_CACHEERR $27
  71 #define CP0_TAGLO $28
  72 #define CP0_TAGHI $29
  73 #define CP0_ERROREPC $30
  74 #define CP0_DESAVE $31
  75
  76 /*
  77  * R4640/R4650 cp0 register names.  These registers are listed
  78  * here only for completeness; without MMU these CPUs are not useable
  79  * by Linux.  A future ELKS port might take make Linux run on them
  80  * though ...
  81  */
  82 #define CP0_IBASE $0
  83 #define CP0_IBOUND $1
  84 #define CP0_DBASE $2
  85 #define CP0_DBOUND $3
  86 #define CP0_CALG $17
  87 #define CP0_IWATCH $18
  88 #define CP0_DWATCH $19
  89
  90 /*
  91  * Coprocessor 0 Set 1 register names
  92  */
  93 #define CP0_S1_DERRADDR0  $26
  94 #define CP0_S1_DERRADDR1  $27
  95 #define CP0_S1_INTCONTROL $20
  96
  97 /*
  98  *  TX39 Series
  99  */
 100 #define CP0_TX39_CACHE  $7
 101
 102 /*
 103  * Coprocessor 1 (FPU) register names
 104  */
 105 #define CP1_REVISION   $0
 106 #define CP1_STATUS     $31
 107
 108 /*
 109  * FPU Status Register Values
 110  */
 111 /*
 112  * Status Register Values
 113  */
 114
 115 #define FPU_CSR_FLUSH   0x01000000      /* flush denormalised results to 0 */
 116 #define FPU_CSR_COND    0x00800000      /* $fcc0 */
 117 #define FPU_CSR_COND0   0x00800000      /* $fcc0 */
 118 #define FPU_CSR_COND1   0x02000000      /* $fcc1 */
 119 #define FPU_CSR_COND2   0x04000000      /* $fcc2 */
 120 #define FPU_CSR_COND3   0x08000000      /* $fcc3 */
 121 #define FPU_CSR_COND4   0x10000000      /* $fcc4 */
 122 #define FPU_CSR_COND5   0x20000000      /* $fcc5 */
 123 #define FPU_CSR_COND6   0x40000000      /* $fcc6 */
 124 #define FPU_CSR_COND7   0x80000000      /* $fcc7 */
 125
 126 /*
 127  * X the exception cause indicator
 128  * E the exception enable
 129  * S the sticky/flag bit
 130 */
 131 #define FPU_CSR_ALL_X   0x0003f000
 132 #define FPU_CSR_UNI_X   0x00020000
 133 #define FPU_CSR_INV_X   0x00010000
 134 #define FPU_CSR_DIV_X   0x00008000
 135 #define FPU_CSR_OVF_X   0x00004000
 136 #define FPU_CSR_UDF_X   0x00002000
 137 #define FPU_CSR_INE_X   0x00001000
 138
 139 #define FPU_CSR_ALL_E   0x00000f80
 140 #define FPU_CSR_INV_E   0x00000800
 141 #define FPU_CSR_DIV_E   0x00000400
 142 #define FPU_CSR_OVF_E   0x00000200
 143 #define FPU_CSR_UDF_E   0x00000100
 144 #define FPU_CSR_INE_E   0x00000080
 145
 146 #define FPU_CSR_ALL_S   0x0000007c
 147 #define FPU_CSR_INV_S   0x00000040
 148 #define FPU_CSR_DIV_S   0x00000020
 149 #define FPU_CSR_OVF_S   0x00000010
 150 #define FPU_CSR_UDF_S   0x00000008
 151 #define FPU_CSR_INE_S   0x00000004
 152
 153 /* rounding mode */
 154 #define FPU_CSR_RN      0x0     /* nearest */
 155 #define FPU_CSR_RZ      0x1     /* towards zero */
 156 #define FPU_CSR_RU      0x2     /* towards +Infinity */
 157 #define FPU_CSR_RD      0x3     /* towards -Infinity */
 158
 159
 160 /*
 161  * Values for PageMask register
 162  */
 163 #ifdef CONFIG_CPU_VR41XX
 164
 165 /* Why doesn't stupidity hurt ... */
 166
 167 #define PM_1K           0x00000000
 168 #define PM_4K           0x00001800
 169 #define PM_16K          0x00007800
 170 #define PM_64K          0x0001f800
 171 #define PM_256K         0x0007f800
 172
 173 #else
 174
 175 #define PM_4K           0x00000000
 176 #define PM_16K          0x00006000
 177 #define PM_64K          0x0001e000
 178 #define PM_256K         0x0007e000
 179 #define PM_1M           0x001fe000
 180 #define PM_4M           0x007fe000
 181 #define PM_16M          0x01ffe000
 182 #define PM_64M          0x07ffe000
 183 #define PM_256M         0x1fffe000
 184
 185 #endif
 186
 187 /*
 188  * Values used for computation of new tlb entries
 189  */
 190 #define PL_4K           12
 191 #define PL_16K          14
 192 #define PL_64K          16
 193 #define PL_256K         18
 194 #define PL_1M           20
 195 #define PL_4M           22
 196 #define PL_16M          24
 197 #define PL_64M          26
 198 #define PL_256M         28
 199
 200 /*
 201  * R4x00 interrupt enable / cause bits
 202  */
 203 #define IE_SW0          (_ULCAST_(1) <<  8)
 204 #define IE_SW1          (_ULCAST_(1) <<  9)
 205 #define IE_IRQ0         (_ULCAST_(1) << 10)
 206 #define IE_IRQ1         (_ULCAST_(1) << 11)
 207 #define IE_IRQ2         (_ULCAST_(1) << 12)
 208 #define IE_IRQ3         (_ULCAST_(1) << 13)
 209 #define IE_IRQ4         (_ULCAST_(1) << 14)
 210 #define IE_IRQ5         (_ULCAST_(1) << 15)
 211
 212 /*
 213  * R4x00 interrupt cause bits
 214  */
 215 #define C_SW0           (_ULCAST_(1) <<  8)
 216 #define C_SW1           (_ULCAST_(1) <<  9)
 217 #define C_IRQ0          (_ULCAST_(1) << 10)
 218 #define C_IRQ1          (_ULCAST_(1) << 11)
 219 #define C_IRQ2          (_ULCAST_(1) << 12)
 220 #define C_IRQ3          (_ULCAST_(1) << 13)
 221 #define C_IRQ4          (_ULCAST_(1) << 14)
 222 #define C_IRQ5          (_ULCAST_(1) << 15)
 223
 224 /*
 225  * Bitfields in the R4xx0 cp0 status register
 226  */
 227 #define ST0_IE                  0x00000001
 228 #define ST0_EXL                 0x00000002
 229 #define ST0_ERL                 0x00000004
 230 #define ST0_KSU                 0x00000018
 231 #  define KSU_USER              0x00000010
 232 #  define KSU_SUPERVISOR        0x00000008
 233 #  define KSU_KERNEL            0x00000000
 234 #define ST0_UX                  0x00000020
 235 #define ST0_SX                  0x00000040
 236 #define ST0_KX                  0x00000080
 237 #define ST0_DE                  0x00010000
 238 #define ST0_CE                  0x00020000
 239
 240 /*
 241  * Bitfields in the R[23]000 cp0 status register.
 242  */
 243 #define ST0_IEC                 0x00000001
 244 #define ST0_KUC                 0x00000002
 245 #define ST0_IEP                 0x00000004
 246 #define ST0_KUP                 0x00000008
 247 #define ST0_IEO                 0x00000010
 248 #define ST0_KUO                 0x00000020
 249 /* bits 6 & 7 are reserved on R[23]000 */
 250 #define ST0_ISC                 0x00010000
 251 #define ST0_SWC                 0x00020000
 252 #define ST0_CM                  0x00080000
 253
 254 /*
 255  * Bits specific to the R4640/R4650
 256  */
 257 #define ST0_UM                  (_ULCAST_(1) <<  4)
 258 #define ST0_IL                  (_ULCAST_(1) << 23)
 259 #define ST0_DL                  (_ULCAST_(1) << 24)
 260
 261 /*
 262  * Bitfields in the TX39 family CP0 Configuration Register 3
 263  */
 264 #define TX39_CONF_ICS_SHIFT     19
 265 #define TX39_CONF_ICS_MASK      0x00380000
 266 #define TX39_CONF_ICS_1KB       0x00000000
 267 #define TX39_CONF_ICS_2KB       0x00080000
 268 #define TX39_CONF_ICS_4KB       0x00100000
 269 #define TX39_CONF_ICS_8KB       0x00180000
 270 #define TX39_CONF_ICS_16KB      0x00200000
 271
 272 #define TX39_CONF_DCS_SHIFT     16
 273 #define TX39_CONF_DCS_MASK      0x00070000
 274 #define TX39_CONF_DCS_1KB       0x00000000
 275 #define TX39_CONF_DCS_2KB       0x00010000
 276 #define TX39_CONF_DCS_4KB       0x00020000
 277 #define TX39_CONF_DCS_8KB       0x00030000
 278 #define TX39_CONF_DCS_16KB      0x00040000
 279
 280 #define TX39_CONF_CWFON         0x00004000
 281 #define TX39_CONF_WBON          0x00002000
 282 #define TX39_CONF_RF_SHIFT      10
 283 #define TX39_CONF_RF_MASK       0x00000c00
 284 #define TX39_CONF_DOZE          0x00000200
 285 #define TX39_CONF_HALT          0x00000100
 286 #define TX39_CONF_LOCK          0x00000080
 287 #define TX39_CONF_ICE           0x00000020
 288 #define TX39_CONF_DCE           0x00000010
 289 #define TX39_CONF_IRSIZE_SHIFT  2
 290 #define TX39_CONF_IRSIZE_MASK   0x0000000c
 291 #define TX39_CONF_DRSIZE_SHIFT  0
 292 #define TX39_CONF_DRSIZE_MASK   0x00000003
 293
 294 /*
 295  * Status register bits available in all MIPS CPUs.
 296  */
 297 #define ST0_IM                  0x0000ff00
 298 #define  STATUSB_IP0            8
 299 #define  STATUSF_IP0            (_ULCAST_(1) <<  8)
 300 #define  STATUSB_IP1            9
 301 #define  STATUSF_IP1            (_ULCAST_(1) <<  9)
 302 #define  STATUSB_IP2            10
 303 #define  STATUSF_IP2            (_ULCAST_(1) << 10)
 304 #define  STATUSB_IP3            11
 305 #define  STATUSF_IP3            (_ULCAST_(1) << 11)
 306 #define  STATUSB_IP4            12
 307 #define  STATUSF_IP4            (_ULCAST_(1) << 12)
 308 #define  STATUSB_IP5            13
 309 #define  STATUSF_IP5            (_ULCAST_(1) << 13)
 310 #define  STATUSB_IP6            14
 311 #define  STATUSF_IP6            (_ULCAST_(1) << 14)
 312 #define  STATUSB_IP7            15
 313 #define  STATUSF_IP7            (_ULCAST_(1) << 15)
 314 #define  STATUSB_IP8            0
 315 #define  STATUSF_IP8            (_ULCAST_(1) <<  0)
 316 #define  STATUSB_IP9            1
 317 #define  STATUSF_IP9            (_ULCAST_(1) <<  1)
 318 #define  STATUSB_IP10           2
 319 #define  STATUSF_IP10           (_ULCAST_(1) <<  2)
 320 #define  STATUSB_IP11           3
 321 #define  STATUSF_IP11           (_ULCAST_(1) <<  3)
 322 #define  STATUSB_IP12           4
 323 #define  STATUSF_IP12           (_ULCAST_(1) <<  4)
 324 #define  STATUSB_IP13           5
 325 #define  STATUSF_IP13           (_ULCAST_(1) <<  5)
 326 #define  STATUSB_IP14           6
 327 #define  STATUSF_IP14           (_ULCAST_(1) <<  6)
 328 #define  STATUSB_IP15           7
 329 #define  STATUSF_IP15           (_ULCAST_(1) <<  7)
 330 #define ST0_CH                  0x00040000
 331 #define ST0_SR                  0x00100000
 332 #define ST0_TS                  0x00200000
 333 #define ST0_BEV                 0x00400000
 334 #define ST0_RE                  0x02000000
 335 #define ST0_FR                  0x04000000
 336 #define ST0_CU                  0xf0000000
 337 #define ST0_CU0                 0x10000000
 338 #define ST0_CU1                 0x20000000
 339 #define ST0_CU2                 0x40000000
 340 #define ST0_CU3                 0x80000000
 341 #define ST0_XX                  0x80000000      /* MIPS IV naming */
 342
 343 /*
 344  * Bitfields and bit numbers in the coprocessor 0 cause register.
 345  *
 346  * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
 347  */
 348 #define  CAUSEB_EXCCODE         2
 349 #define  CAUSEF_EXCCODE         (_ULCAST_(31)  <<  2)
 350 #define  CAUSEB_IP              8
 351 #define  CAUSEF_IP              (_ULCAST_(255) <<  8)
 352 #define  CAUSEB_IP0             8
 353 #define  CAUSEF_IP0             (_ULCAST_(1)   <<  8)
 354 #define  CAUSEB_IP1             9
 355 #define  CAUSEF_IP1             (_ULCAST_(1)   <<  9)
 356 #define  CAUSEB_IP2             10
 357 #define  CAUSEF_IP2             (_ULCAST_(1)   << 10)
 358 #define  CAUSEB_IP3             11
 359 #define  CAUSEF_IP3             (_ULCAST_(1)   << 11)
 360 #define  CAUSEB_IP4             12
 361 #define  CAUSEF_IP4             (_ULCAST_(1)   << 12)
 362 #define  CAUSEB_IP5             13
 363 #define  CAUSEF_IP5             (_ULCAST_(1)   << 13)
 364 #define  CAUSEB_IP6             14
 365 #define  CAUSEF_IP6             (_ULCAST_(1)   << 14)
 366 #define  CAUSEB_IP7             15
 367 #define  CAUSEF_IP7             (_ULCAST_(1)   << 15)
 368 #define  CAUSEB_IV              23
 369 #define  CAUSEF_IV              (_ULCAST_(1)   << 23)
 370 #define  CAUSEB_CE              28
 371 #define  CAUSEF_CE              (_ULCAST_(3)   << 28)
 372 #define  CAUSEB_BD              31
 373 #define  CAUSEF_BD              (_ULCAST_(1)   << 31)
 374
 375 /*
 376  * Bits in the coprocessor 0 config register.
 377  */
 378 /* Generic bits.  */
 379 #define CONF_CM_CACHABLE_NO_WA          0
 380 #define CONF_CM_CACHABLE_WA             1
 381 #define CONF_CM_UNCACHED                2
 382 #define CONF_CM_CACHABLE_NONCOHERENT    3
 383 #define CONF_CM_CACHABLE_CE             4
 384 #define CONF_CM_CACHABLE_COW            5
 385 #define CONF_CM_CACHABLE_CUW            6
 386 #define CONF_CM_CACHABLE_ACCELERATED    7
 387 #define CONF_CM_CMASK                   7
 388 #define CONF_BE                 (_ULCAST_(1) << 15)
 389
 390 /* Bits common to various processors.  */
 391 #define CONF_CU                 (_ULCAST_(1) <<  3)
 392 #define CONF_DB                 (_ULCAST_(1) <<  4)
 393 #define CONF_IB                 (_ULCAST_(1) <<  5)
 394 #define CONF_DC                 (_ULCAST_(7) <<  6)
 395 #define CONF_IC                 (_ULCAST_(7) <<  9)
 396 #define CONF_EB                 (_ULCAST_(1) << 13)
 397 #define CONF_EM                 (_ULCAST_(1) << 14)
 398 #define CONF_SM                 (_ULCAST_(1) << 16)
 399 #define CONF_SC                 (_ULCAST_(1) << 17)
 400 #define CONF_EW                 (_ULCAST_(3) << 18)
 401 #define CONF_EP                 (_ULCAST_(15)<< 24)
 402 #define CONF_EC                 (_ULCAST_(7) << 28)
 403 #define CONF_CM                 (_ULCAST_(1) << 31)
 404
 405 /* Bits specific to the R4xx0.  */
 406 #define R4K_CONF_SW             (_ULCAST_(1) << 20)
 407 #define R4K_CONF_SS             (_ULCAST_(1) << 21)
 408 #define R4K_CONF_SB             (_ULCAST_(3) << 22)
 409
 410 /* Bits specific to the R5000.  */
 411 #define R5K_CONF_SE             (_ULCAST_(1) << 12)
 412 #define R5K_CONF_SS             (_ULCAST_(3) << 20)
 413
 414 /* Bits specific to the R10000.  */
 415 #define R10K_CONF_DN            (_ULCAST_(3) <<  3)
 416 #define R10K_CONF_CT            (_ULCAST_(1) <<  5)
 417 #define R10K_CONF_PE            (_ULCAST_(1) <<  6)
 418 #define R10K_CONF_PM            (_ULCAST_(3) <<  7)
 419 #define R10K_CONF_EC            (_ULCAST_(15)<<  9)
 420 #define R10K_CONF_SB            (_ULCAST_(1) << 13)
 421 #define R10K_CONF_SK            (_ULCAST_(1) << 14)
 422 #define R10K_CONF_SS            (_ULCAST_(7) << 16)
 423 #define R10K_CONF_SC            (_ULCAST_(7) << 19)
 424 #define R10K_CONF_DC            (_ULCAST_(7) << 26)
 425 #define R10K_CONF_IC            (_ULCAST_(7) << 29)
 426
 427 /* Bits specific to the VR41xx.  */
 428 #define VR41_CONF_CS            (_ULCAST_(1) << 12)
 429 #define VR41_CONF_M16           (_ULCAST_(1) << 20)
 430 #define VR41_CONF_AD            (_ULCAST_(1) << 23)
 431
 432 /* Bits specific to the R30xx.  */
 433 #define R30XX_CONF_FDM          (_ULCAST_(1) << 19)
 434 #define R30XX_CONF_REV          (_ULCAST_(1) << 22)
 435 #define R30XX_CONF_AC           (_ULCAST_(1) << 23)
 436 #define R30XX_CONF_RF           (_ULCAST_(1) << 24)
 437 #define R30XX_CONF_HALT         (_ULCAST_(1) << 25)
 438 #define R30XX_CONF_FPINT        (_ULCAST_(7) << 26)
 439 #define R30XX_CONF_DBR          (_ULCAST_(1) << 29)
 440 #define R30XX_CONF_SB           (_ULCAST_(1) << 30)
 441 #define R30XX_CONF_LOCK         (_ULCAST_(1) << 31)
 442
 443 /* Bits specific to the TX49.  */
 444 #define TX49_CONF_DC            (_ULCAST_(1) << 16)
 445 #define TX49_CONF_IC            (_ULCAST_(1) << 17)  /* conflict with CONF_SC */
 446 #define TX49_CONF_HALT          (_ULCAST_(1) << 18)
 447 #define TX49_CONF_CWFON         (_ULCAST_(1) << 27)
 448
 449 /* Bits specific to the MIPS32/64 PRA.  */
 450 #define MIPS_CONF_MT            (_ULCAST_(7) <<  7)
 451 #define MIPS_CONF_AR            (_ULCAST_(7) << 10)
 452 #define MIPS_CONF_AT            (_ULCAST_(3) << 13)
 453 #define MIPS_CONF_M             (_ULCAST_(1) << 31)
 454
 455 /*
 456  * R10000 performance counter definitions.
 457  *
 458  * FIXME: The R10000 performance counter opens a nice way to implement CPU
 459  *        time accounting with a precission of one cycle.  I don't have
 460  *        R10000 silicon but just a manual, so ...
 461  */
 462
 463 /*
 464  * Events counted by counter #0
 465  */
 466 #define CE0_CYCLES                      0
 467 #define CE0_INSN_ISSUED                 1
 468 #define CE0_LPSC_ISSUED                 2
 469 #define CE0_S_ISSUED                    3
 470 #define CE0_SC_ISSUED                   4
 471 #define CE0_SC_FAILED                   5
 472 #define CE0_BRANCH_DECODED              6
 473 #define CE0_QW_WB_SECONDARY             7
 474 #define CE0_CORRECTED_ECC_ERRORS        8
 475 #define CE0_ICACHE_MISSES               9
 476 #define CE0_SCACHE_I_MISSES             10
 477 #define CE0_SCACHE_I_WAY_MISSPREDICTED  11
 478 #define CE0_EXT_INTERVENTIONS_REQ       12
 479 #define CE0_EXT_INVALIDATE_REQ          13
 480 #define CE0_VIRTUAL_COHERENCY_COND      14
 481 #define CE0_INSN_GRADUATED              15
 482
 483 /*
 484  * Events counted by counter #1
 485  */
 486 #define CE1_CYCLES                      0
 487 #define CE1_INSN_GRADUATED              1
 488 #define CE1_LPSC_GRADUATED              2
 489 #define CE1_S_GRADUATED                 3
 490 #define CE1_SC_GRADUATED                4
 491 #define CE1_FP_INSN_GRADUATED           5
 492 #define CE1_QW_WB_PRIMARY               6
 493 #define CE1_TLB_REFILL                  7
 494 #define CE1_BRANCH_MISSPREDICTED        8
 495 #define CE1_DCACHE_MISS                 9
 496 #define CE1_SCACHE_D_MISSES             10
 497 #define CE1_SCACHE_D_WAY_MISSPREDICTED  11
 498 #define CE1_EXT_INTERVENTION_HITS       12
 499 #define CE1_EXT_INVALIDATE_REQ          13
 500 #define CE1_SP_HINT_TO_CEXCL_SC_BLOCKS  14
 501 #define CE1_SP_HINT_TO_SHARED_SC_BLOCKS 15
 502
 503 /*
 504  * These flags define in which privilege mode the counters count events
 505  */
 506 #define CEB_USER        8       /* Count events in user mode, EXL = ERL = 0 */
 507 #define CEB_SUPERVISOR  4       /* Count events in supvervisor mode EXL = ERL = 0 */
 508 #define CEB_KERNEL      2       /* Count events in kernel mode EXL = ERL = 0 */
 509 #define CEB_EXL         1       /* Count events with EXL = 1, ERL = 0 */
 510
 511 #ifndef __ASSEMBLY__
 512
 513 /*
 514  * Functions to access the r10k performance counter and control registers
 515  */
 516 #define read_r10k_perf_cntr(counter)                            \
 517 ({ unsigned int __res;                                          \
 518         __asm__ __volatile__(                                   \
 519         "mfpc\t%0, "STR(counter)                                \
 520         : "=r" (__res));                                        \
 521         __res;})
 522
 523 #define write_r10k_perf_cntr(counter,val)                       \
 524         __asm__ __volatile__(                                   \
 525         "mtpc\t%0, "STR(counter)                                \
 526         : : "r" (val));
 527
 528 #define read_r10k_perf_cntl(counter)                            \
 529 ({ unsigned int __res;                                          \
 530         __asm__ __volatile__(                                   \
 531         "mfps\t%0, "STR(counter)                                \
 532         : "=r" (__res));                                        \
 533         __res;})
 534
 535 #define write_r10k_perf_cntl(counter,val)                       \
 536         __asm__ __volatile__(                                   \
 537         "mtps\t%0, "STR(counter)                                \
 538         : : "r" (val));
 539
 540 /*
 541  * Macros to access the system control coprocessor
 542  */
 543
 544 #define __read_32bit_c0_register(source, sel)                           \
 545 ({ int __res;                                                           \
 546         if (sel == 0)                                                   \
 547                 __asm__ __volatile__(                                   \
 548                         "mfc0\t%0, " #source "\n\t"                     \
 549                         : "=r" (__res));                                \
 550         else                                                            \
 551                 __asm__ __volatile__(                                   \
 552                         ".set\tmips32\n\t"                              \
 553                         "mfc0\t%0, " #source ", " #sel "\n\t"           \
 554                         ".set\tmips0\n\t"                               \
 555                         : "=r" (__res));                                \
 556         __res;                                                          \
 557 })
 558
 559 #define __read_64bit_c0_register(source, sel)                           \
 560 ({ unsigned long __res;                                                 \
 561         if (sel == 0)                                                   \
 562                 __asm__ __volatile__(                                   \
 563                         ".set\tmips3\n\t"                               \
 564                         "dmfc0\t%0, " #source "\n\t"                    \
 565                         ".set\tmips0"                                   \
 566                         : "=r" (__res));                                \
 567         else                                                            \
 568                 __asm__ __volatile__(                                   \
 569                         ".set\tmips64\n\t"                              \
 570                         "dmfc0\t%0, " #source ", " #sel "\n\t"          \
 571                         ".set\tmips0"                                   \
 572                         : "=r" (__res));                                \
 573         __res;                                                          \
 574 })
 575
 576 #define __write_32bit_c0_register(register, sel, value)                 \
 577 do {                                                                    \
 578         if (sel == 0)                                                   \
 579                 __asm__ __volatile__(                                   \
 580                         "mtc0\t%z0, " #register "\n\t"                  \
 581                         : : "Jr" (value));                              \
 582         else                                                            \
 583                 __asm__ __volatile__(                                   \
 584                         ".set\tmips32\n\t"                              \
 585                         "mtc0\t%z0, " #register ", " #sel "\n\t"        \
 586                         ".set\tmips0"                                   \
 587                         : : "Jr" (value));                              \
 588 } while (0)
 589
 590 #define __write_64bit_c0_register(register, sel, value)                 \
 591 do {                                                                    \
 592         if (sel == 0)                                                   \
 593                 __asm__ __volatile__(                                   \
 594                         ".set\tmips3\n\t"                               \
 595                         "dmtc0\t%z0, " #register "\n\t"                 \
 596                         ".set\tmips0"                                   \
 597                         : : "Jr" (value));                              \
 598         else                                                            \
 599                 __asm__ __volatile__(                                   \
 600                         ".set\tmips64\n\t"                              \
 601                         "dmtc0\t%z0, " #register ", " #sel "\n\t"       \
 602                         ".set\tmips0"                                   \
 603                         : : "Jr" (value));                              \
 604 } while (0)
 605
 606 #define __read_ulong_c0_register(reg, sel)                              \
 607         ((sizeof(unsigned long) == 4) ?                                 \
 608         __read_32bit_c0_register(reg, sel) :                            \
 609         __read_64bit_c0_register(reg, sel))
 610
 611 #define __write_ulong_c0_register(reg, sel, val)                        \
 612 do {                                                                    \
 613         if (sizeof(unsigned long) == 4)                                 \
 614                 __write_32bit_c0_register(reg, sel, val);               \
 615         else                                                            \
 616                 __write_64bit_c0_register(reg, sel, val);               \
 617 } while (0)
 618
 619 /*
 620  * These versions are only needed for systems with more than 38 bits of
 621  * physical address space running the 32-bit kernel.  That's none atm :-)
 622  */
 623 #define __read_64bit_c0_split(source, sel)                              \
 624 ({                                                                      \
 625         unsigned long long val;                                         \
 626         unsigned long flags;                                            \
 627                                                                         \
 628         local_irq_save(flags);                                          \
 629         if (sel == 0)                                                   \
 630                 __asm__ __volatile__(                                   \
 631                         ".set\tmips64\n\t"                              \
 632                         "dmfc0\t%M0, " #source "\n\t"                   \
 633                         "dsll\t%L0, %M0, 32\n\t"                        \
 634                         "dsrl\t%M0, %M0, 32\n\t"                        \
 635                         "dsrl\t%L0, %L0, 32\n\t"                        \
 636                         ".set\tmips0"                                   \
 637                         : "=r" (val));                                  \
 638         else                                                            \
 639                 __asm__ __volatile__(                                   \
 640                         ".set\tmips64\n\t"                              \
 641                         "dmfc0\t%M0, " #source ", " #sel "\n\t"         \
 642                         "dsll\t%L0, %M0, 32\n\t"                        \
 643                         "dsrl\t%M0, %M0, 32\n\t"                        \
 644                         "dsrl\t%L0, %L0, 32\n\t"                        \
 645                         ".set\tmips0"                                   \
 646                         : "=r" (val));                                  \
 647         local_irq_restore(flags);                                       \
 648                                                                         \
 649         val;                                                            \
 650 })
 651
 652 #define __write_64bit_c0_split(source, sel, val)                        \
 653 do {                                                                    \
 654         unsigned long flags;                                            \
 655                                                                         \
 656         local_irq_save(flags);                                          \
 657         if (sel == 0)                                                   \
 658                 __asm__ __volatile__(                                   \
 659                         ".set\tmips64\n\t"                              \
 660                         "dsll\t%L0, %L0, 32\n\t"                        \
 661                         "dsrl\t%L0, %L0, 32\n\t"                        \
 662                         "dsll\t%M0, %M0, 32\n\t"                        \
 663                         "or\t%L0, %L0, %M0\n\t"                         \
 664                         "dmtc0\t%L0, " #source "\n\t"                   \
 665                         ".set\tmips0"                                   \
 666                         : : "r" (val));                                 \
 667         else                                                            \
 668                 __asm__ __volatile__(                                   \
 669                         ".set\tmips64\n\t"                              \
 670                         "dsll\t%L0, %L0, 32\n\t"                        \
 671                         "dsrl\t%L0, %L0, 32\n\t"                        \
 672                         "dsll\t%M0, %M0, 32\n\t"                        \
 673                         "or\t%L0, %L0, %M0\n\t"                         \
 674                         "dmtc0\t%L0, " #source ", " #sel "\n\t"         \
 675                         ".set\tmips0"                                   \
 676                         : : "r" (val));                                 \
 677         local_irq_restore(flags);                                       \
 678 } while (0)
 679
 680 #define read_c0_index()         __read_32bit_c0_register($0, 0)
 681 #define write_c0_index(val)     __write_32bit_c0_register($0, 0, val)
 682
 683 #define read_c0_entrylo0()      __read_ulong_c0_register($2, 0)
 684 #define write_c0_entrylo0(val)  __write_ulong_c0_register($2, 0, val)
 685
 686 #define read_c0_entrylo1()      __read_ulong_c0_register($3, 0)
 687 #define write_c0_entrylo1(val)  __write_ulong_c0_register($3, 0, val)
 688
 689 #define read_c0_conf()          __read_32bit_c0_register($3, 0)
 690 #define write_c0_conf(val)      __write_32bit_c0_register($3, 0, val)
 691
 692 #define read_c0_context()       __read_ulong_c0_register($4, 0)
 693 #define write_c0_context(val)   __write_ulong_c0_register($4, 0, val)
 694
 695 #define read_c0_pagemask()      __read_32bit_c0_register($5, 0)
 696 #define write_c0_pagemask(val)  __write_32bit_c0_register($5, 0, val)
 697
 698 #define read_c0_wired()         __read_32bit_c0_register($6, 0)
 699 #define write_c0_wired(val)     __write_32bit_c0_register($6, 0, val)
 700
 701 #define read_c0_info()          __read_32bit_c0_register($7, 0)
 702
 703 #define read_c0_cache()         __read_32bit_c0_register($7, 0) /* TX39xx */
 704 #define write_c0_cache(val)     __write_32bit_c0_register($7, 0, val)
 705
 706 #define read_c0_count()         __read_32bit_c0_register($9, 0)
 707 #define write_c0_count(val)     __write_32bit_c0_register($9, 0, val)
 708
 709 #define read_c0_entryhi()       __read_ulong_c0_register($10, 0)
 710 #define write_c0_entryhi(val)   __write_ulong_c0_register($10, 0, val)
 711
 712 #define read_c0_compare()       __read_32bit_c0_register($11, 0)
 713 #define write_c0_compare(val)   __write_32bit_c0_register($11, 0, val)
 714
 715 #define read_c0_status()        __read_32bit_c0_register($12, 0)
 716 #define write_c0_status(val)    __write_32bit_c0_register($12, 0, val)
 717
 718 #define read_c0_cause()         __read_32bit_c0_register($13, 0)
 719 #define write_c0_cause(val)     __write_32bit_c0_register($13, 0, val)
 720
 721 #define read_c0_epc()           __read_ulong_c0_register($14, 0)
 722 #define write_c0_epc(val)       __write_ulong_c0_register($14, 0, val)
 723
 724 #define read_c0_prid()          __read_32bit_c0_register($15, 0)
 725
 726 #define read_c0_config()        __read_32bit_c0_register($16, 0)
 727 #define read_c0_config1()       __read_32bit_c0_register($16, 1)
 728 #define read_c0_config2()       __read_32bit_c0_register($16, 2)
 729 #define read_c0_config3()       __read_32bit_c0_register($16, 3)
 730 #define write_c0_config(val)    __write_32bit_c0_register($16, 0, val)
 731 #define write_c0_config1(val)   __write_32bit_c0_register($16, 1, val)
 732 #define write_c0_config2(val)   __write_32bit_c0_register($16, 2, val)
 733 #define write_c0_config3(val)   __write_32bit_c0_register($16, 3, val)
 734
 735 /*
 736  * The WatchLo register.  There may be upto 8 of them.
 737  */
 738 #define read_c0_watchlo0()      __read_ulong_c0_register($18, 0)
 739 #define read_c0_watchlo1()      __read_ulong_c0_register($18, 1)
 740 #define read_c0_watchlo2()      __read_ulong_c0_register($18, 2)
 741 #define read_c0_watchlo3()      __read_ulong_c0_register($18, 3)
 742 #define read_c0_watchlo4()      __read_ulong_c0_register($18, 4)
 743 #define read_c0_watchlo5()      __read_ulong_c0_register($18, 5)
 744 #define read_c0_watchlo6()      __read_ulong_c0_register($18, 6)
 745 #define read_c0_watchlo7()      __read_ulong_c0_register($18, 7)
 746 #define write_c0_watchlo0(val)  __write_ulong_c0_register($18, 0, val)
 747 #define write_c0_watchlo1(val)  __write_ulong_c0_register($18, 1, val)
 748 #define write_c0_watchlo2(val)  __write_ulong_c0_register($18, 2, val)
 749 #define write_c0_watchlo3(val)  __write_ulong_c0_register($18, 3, val)
 750 #define write_c0_watchlo4(val)  __write_ulong_c0_register($18, 4, val)
 751 #define write_c0_watchlo5(val)  __write_ulong_c0_register($18, 5, val)
 752 #define write_c0_watchlo6(val)  __write_ulong_c0_register($18, 6, val)
 753 #define write_c0_watchlo7(val)  __write_ulong_c0_register($18, 7, val)
 754
 755 /*
 756  * The WatchHi register.  There may be upto 8 of them.
 757  */
 758 #define read_c0_watchhi0()      __read_32bit_c0_register($19, 0)
 759 #define read_c0_watchhi1()      __read_32bit_c0_register($19, 1)
 760 #define read_c0_watchhi2()      __read_32bit_c0_register($19, 2)
 761 #define read_c0_watchhi3()      __read_32bit_c0_register($19, 3)
 762 #define read_c0_watchhi4()      __read_32bit_c0_register($19, 4)
 763 #define read_c0_watchhi5()      __read_32bit_c0_register($19, 5)
 764 #define read_c0_watchhi6()      __read_32bit_c0_register($19, 6)
 765 #define read_c0_watchhi7()      __read_32bit_c0_register($19, 7)
 766
 767 #define write_c0_watchhi0(val)  __write_32bit_c0_register($19, 0, val)
 768 #define write_c0_watchhi1(val)  __write_32bit_c0_register($19, 1, val)
 769 #define write_c0_watchhi2(val)  __write_32bit_c0_register($19, 2, val)
 770 #define write_c0_watchhi3(val)  __write_32bit_c0_register($19, 3, val)
 771 #define write_c0_watchhi4(val)  __write_32bit_c0_register($19, 4, val)
 772 #define write_c0_watchhi5(val)  __write_32bit_c0_register($19, 5, val)
 773 #define write_c0_watchhi6(val)  __write_32bit_c0_register($19, 6, val)
 774 #define write_c0_watchhi7(val)  __write_32bit_c0_register($19, 7, val)
 775
 776 #define read_c0_xcontext()      __read_ulong_c0_register($20, 0)
 777 #define write_c0_xcontext(val)  __write_ulong_c0_register($20, 0, val)
 778
 779 #define read_c0_intcontrol()    __read_32bit_c0_register($20, 1)
 780 #define write_c0_intcontrol(val) __write_32bit_c0_register($20, 1, val)
 781
 782 #define read_c0_framemask()     __read_32bit_c0_register($21, 0)
 783 #define write_c0_framemask(val) __write_32bit_c0_register($21, 0, val)
 784
 785 #define read_c0_debug()         __read_32bit_c0_register($23, 0)
 786 #define write_c0_debug(val)     __write_32bit_c0_register($23, 0, val)
 787
 788 #define read_c0_depc()          __read_ulong_c0_register($24, 0)
 789 #define write_c0_depc(val)      __write_ulong_c0_register($24, 0, val)
 790
 791 #define read_c0_ecc()           __read_32bit_c0_register($26, 0)
 792 #define write_c0_ecc(val)       __write_32bit_c0_register($26, 0, val)
 793
 794 #define read_c0_derraddr0()     __read_ulong_c0_register($26, 1)
 795 #define write_c0_derraddr0(val) __write_ulong_c0_register($26, 1, val)
 796
 797 #define read_c0_cacheerr()      __read_32bit_c0_register($27, 0)
 798
 799 #define read_c0_derraddr1()     __read_ulong_c0_register($27, 1)
 800 #define write_c0_derraddr1(val) __write_ulong_c0_register($27, 1, val)
 801
 802 #define read_c0_taglo()         __read_32bit_c0_register($28, 0)
 803 #define write_c0_taglo(val)     __write_32bit_c0_register($28, 0, val)
 804
 805 #define read_c0_taghi()         __read_32bit_c0_register($29, 0)
 806 #define write_c0_taghi(val)     __write_32bit_c0_register($29, 0, val)
 807
 808 #define read_c0_errorepc()      __read_ulong_c0_register($30, 0)
 809 #define write_c0_errorepc(val)  __write_ulong_c0_register($30, 0, val)
 810
 811 /*
 812  * Macros to access the floating point coprocessor control registers
 813  */
 814 #define read_32bit_cp1_register(source)                         \
 815 ({ int __res;                                                   \
 816         __asm__ __volatile__(                                   \
 817         ".set\tpush\n\t"                                        \
 818         ".set\treorder\n\t"                                     \
 819         "cfc1\t%0,"STR(source)"\n\t"                            \
 820         ".set\tpop"                                             \
 821         : "=r" (__res));                                        \
 822         __res;})
 823
 824 /* TLB operations. */
 825 static inline void tlb_probe(void)
 826 {
 827         __asm__ __volatile__(
 828                 ".set noreorder\n\t"
 829                 "tlbp\n\t"
 830                 ".set reorder");
 831 }
 832
 833 static inline void tlb_read(void)
 834 {
 835         __asm__ __volatile__(
 836                 ".set noreorder\n\t"
 837                 "tlbr\n\t"
 838                 ".set reorder");
 839 }
 840
 841 static inline void tlb_write_indexed(void)
 842 {
 843         __asm__ __volatile__(
 844                 ".set noreorder\n\t"
 845                 "tlbwi\n\t"
 846                 ".set reorder");
 847 }
 848
 849 static inline void tlb_write_random(void)
 850 {
 851         __asm__ __volatile__(
 852                 ".set noreorder\n\t"
 853                 "tlbwr\n\t"
 854                 ".set reorder");
 855 }
 856
 857 /*
 858  * Manipulate bits in a c0 register.
 859  */
 860 #define __BUILD_SET_C0(name,register)                           \
 861 static inline unsigned int                                      \
 862 set_c0_##name(unsigned int set)                                 \
 863 {                                                               \
 864         unsigned int res;                                       \
 865                                                                 \
 866         res = read_c0_##name();                                 \
 867         res |= set;                                             \
 868         write_c0_##name(res);                                   \
 869                                                                 \
 870         return res;                                             \
 871 }                                                               \
 872                                                                 \
 873 static inline unsigned int                                      \
 874 clear_c0_##name(unsigned int clear)                             \
 875 {                                                               \
 876         unsigned int res;                                       \
 877                                                                 \
 878         res = read_c0_##name();                                 \
 879         res &= ~clear;                                          \
 880         write_c0_##name(res);                                   \
 881                                                                 \
 882         return res;                                             \
 883 }                                                               \
 884                                                                 \
 885 static inline unsigned int                                      \
 886 change_c0_##name(unsigned int change, unsigned int new)         \
 887 {                                                               \
 888         unsigned int res;                                       \
 889                                                                 \
 890         res = read_c0_##name();                                 \
 891         res &= ~change;                                         \
 892         res |= (new & change);                                  \
 893         write_c0_##name(res);                                   \
 894                                                                 \
 895         return res;                                             \
 896 }
 897
 898 __BUILD_SET_C0(status,CP0_STATUS)
 899 __BUILD_SET_C0(cause,CP0_CAUSE)
 900 __BUILD_SET_C0(config,CP0_CONFIG)
 901
 902 #endif /* !__ASSEMBLY__ */
 903
 904 #endif /* _ASM_MIPSREGS_H */