arch/mips/include/asm/mipsmtregs.h

   1 /*
   2  * MT regs definitions, follows on from mipsregs.h
   3  * Copyright (C) 2004 - 2005 MIPS Technologies, Inc.  All rights reserved.
   4  * Elizabeth Clarke et. al.
   5  *
   6  */
   7 #ifndef _ASM_MIPSMTREGS_H
   8 #define _ASM_MIPSMTREGS_H
   9
  10 #include <asm/mipsregs.h>
  11 #include <asm/war.h>
  12
  13 #ifndef __ASSEMBLY__
  14
  15 /*
  16  * C macros
  17  */
  18
  19 #define read_c0_mvpcontrol()            __read_32bit_c0_register($0, 1)
  20 #define write_c0_mvpcontrol(val)        __write_32bit_c0_register($0, 1, val)
  21
  22 #define read_c0_mvpconf0()              __read_32bit_c0_register($0, 2)
  23 #define read_c0_mvpconf1()              __read_32bit_c0_register($0, 3)
  24
  25 #define read_c0_vpecontrol()            __read_32bit_c0_register($1, 1)
  26 #define write_c0_vpecontrol(val)        __write_32bit_c0_register($1, 1, val)
  27
  28 #define read_c0_vpeconf0()              __read_32bit_c0_register($1, 2)
  29 #define write_c0_vpeconf0(val)          __write_32bit_c0_register($1, 2, val)
  30
  31 #define read_c0_tcstatus()              __read_32bit_c0_register($2, 1)
  32 #define write_c0_tcstatus(val)          __write_32bit_c0_register($2, 1, val)
  33
  34 #define read_c0_tcbind()                __read_32bit_c0_register($2, 2)
  35
  36 #define read_c0_tccontext()             __read_32bit_c0_register($2, 5)
  37 #define write_c0_tccontext(val)         __write_32bit_c0_register($2, 5, val)
  38
  39 #else /* Assembly */
  40 /*
  41  * Macros for use in assembly language code
  42  */
  43
  44 #define CP0_MVPCONTROL          $0, 1
  45 #define CP0_MVPCONF0            $0, 2
  46 #define CP0_MVPCONF1            $0, 3
  47 #define CP0_VPECONTROL          $1, 1
  48 #define CP0_VPECONF0            $1, 2
  49 #define CP0_VPECONF1            $1, 3
  50 #define CP0_YQMASK              $1, 4
  51 #define CP0_VPESCHEDULE $1, 5
  52 #define CP0_VPESCHEFBK          $1, 6
  53 #define CP0_TCSTATUS            $2, 1
  54 #define CP0_TCBIND              $2, 2
  55 #define CP0_TCRESTART           $2, 3
  56 #define CP0_TCHALT              $2, 4
  57 #define CP0_TCCONTEXT           $2, 5
  58 #define CP0_TCSCHEDULE          $2, 6
  59 #define CP0_TCSCHEFBK           $2, 7
  60 #define CP0_SRSCONF0            $6, 1
  61 #define CP0_SRSCONF1            $6, 2
  62 #define CP0_SRSCONF2            $6, 3
  63 #define CP0_SRSCONF3            $6, 4
  64 #define CP0_SRSCONF4            $6, 5
  65
  66 #endif
  67
  68 /* MVPControl fields */
  69 #define MVPCONTROL_EVP          (_ULCAST_(1))
  70
  71 #define MVPCONTROL_VPC_SHIFT    1
  72 #define MVPCONTROL_VPC          (_ULCAST_(1) << MVPCONTROL_VPC_SHIFT)
  73
  74 #define MVPCONTROL_STLB_SHIFT   2
  75 #define MVPCONTROL_STLB         (_ULCAST_(1) << MVPCONTROL_STLB_SHIFT)
  76
  77
  78 /* MVPConf0 fields */
  79 #define MVPCONF0_PTC_SHIFT      0
  80 #define MVPCONF0_PTC            ( _ULCAST_(0xff))
  81 #define MVPCONF0_PVPE_SHIFT     10
  82 #define MVPCONF0_PVPE           ( _ULCAST_(0xf) << MVPCONF0_PVPE_SHIFT)
  83 #define MVPCONF0_TCA_SHIFT      15
  84 #define MVPCONF0_TCA            ( _ULCAST_(1) << MVPCONF0_TCA_SHIFT)
  85 #define MVPCONF0_PTLBE_SHIFT    16
  86 #define MVPCONF0_PTLBE          (_ULCAST_(0x3ff) << MVPCONF0_PTLBE_SHIFT)
  87 #define MVPCONF0_TLBS_SHIFT     29
  88 #define MVPCONF0_TLBS           (_ULCAST_(1) << MVPCONF0_TLBS_SHIFT)
  89 #define MVPCONF0_M_SHIFT        31
  90 #define MVPCONF0_M              (_ULCAST_(0x1) << MVPCONF0_M_SHIFT)
  91
  92
  93 /* config3 fields */
  94 #define CONFIG3_MT_SHIFT        2
  95 #define CONFIG3_MT              (_ULCAST_(1) << CONFIG3_MT_SHIFT)
  96
  97
  98 /* VPEControl fields (per VPE) */
  99 #define VPECONTROL_TARGTC       (_ULCAST_(0xff))
 100
 101 #define VPECONTROL_TE_SHIFT     15
 102 #define VPECONTROL_TE           (_ULCAST_(1) << VPECONTROL_TE_SHIFT)
 103 #define VPECONTROL_EXCPT_SHIFT  16
 104 #define VPECONTROL_EXCPT        (_ULCAST_(0x7) << VPECONTROL_EXCPT_SHIFT)
 105
 106 /* Thread Exception Codes for EXCPT field */
 107 #define THREX_TU                0
 108 #define THREX_TO                1
 109 #define THREX_IYQ               2
 110 #define THREX_GSX               3
 111 #define THREX_YSCH              4
 112 #define THREX_GSSCH             5
 113
 114 #define VPECONTROL_GSI_SHIFT    20
 115 #define VPECONTROL_GSI          (_ULCAST_(1) << VPECONTROL_GSI_SHIFT)
 116 #define VPECONTROL_YSI_SHIFT    21
 117 #define VPECONTROL_YSI          (_ULCAST_(1) << VPECONTROL_YSI_SHIFT)
 118
 119 /* VPEConf0 fields (per VPE) */
 120 #define VPECONF0_VPA_SHIFT      0
 121 #define VPECONF0_VPA            (_ULCAST_(1) << VPECONF0_VPA_SHIFT)
 122 #define VPECONF0_MVP_SHIFT      1
 123 #define VPECONF0_MVP            (_ULCAST_(1) << VPECONF0_MVP_SHIFT)
 124 #define VPECONF0_XTC_SHIFT      21
 125 #define VPECONF0_XTC            (_ULCAST_(0xff) << VPECONF0_XTC_SHIFT)
 126
 127 /* TCStatus fields (per TC) */
 128 #define TCSTATUS_TASID          (_ULCAST_(0xff))
 129 #define TCSTATUS_IXMT_SHIFT     10
 130 #define TCSTATUS_IXMT           (_ULCAST_(1) << TCSTATUS_IXMT_SHIFT)
 131 #define TCSTATUS_TKSU_SHIFT     11
 132 #define TCSTATUS_TKSU           (_ULCAST_(3) << TCSTATUS_TKSU_SHIFT)
 133 #define TCSTATUS_A_SHIFT        13
 134 #define TCSTATUS_A              (_ULCAST_(1) << TCSTATUS_A_SHIFT)
 135 #define TCSTATUS_DA_SHIFT       15
 136 #define TCSTATUS_DA             (_ULCAST_(1) << TCSTATUS_DA_SHIFT)
 137 #define TCSTATUS_DT_SHIFT       20
 138 #define TCSTATUS_DT             (_ULCAST_(1) << TCSTATUS_DT_SHIFT)
 139 #define TCSTATUS_TDS_SHIFT      21
 140 #define TCSTATUS_TDS            (_ULCAST_(1) << TCSTATUS_TDS_SHIFT)
 141 #define TCSTATUS_TSST_SHIFT     22
 142 #define TCSTATUS_TSST           (_ULCAST_(1) << TCSTATUS_TSST_SHIFT)
 143 #define TCSTATUS_RNST_SHIFT     23
 144 #define TCSTATUS_RNST           (_ULCAST_(3) << TCSTATUS_RNST_SHIFT)
 145 /* Codes for RNST */
 146 #define TC_RUNNING              0
 147 #define TC_WAITING              1
 148 #define TC_YIELDING             2
 149 #define TC_GATED                3
 150
 151 #define TCSTATUS_TMX_SHIFT      27
 152 #define TCSTATUS_TMX            (_ULCAST_(1) << TCSTATUS_TMX_SHIFT)
 153 /* TCStatus TCU bits can use same definitions/offsets as CU bits in Status */
 154
 155 /* TCBind */
 156 #define TCBIND_CURVPE_SHIFT     0
 157 #define TCBIND_CURVPE           (_ULCAST_(0xf))
 158
 159 #define TCBIND_CURTC_SHIFT      21
 160
 161 #define TCBIND_CURTC            (_ULCAST_(0xff) << TCBIND_CURTC_SHIFT)
 162
 163 /* TCHalt */
 164 #define TCHALT_H                (_ULCAST_(1))
 165
 166 #ifndef __ASSEMBLY__
 167
 168 static inline unsigned int dvpe(void)
 169 {
 170         int res = 0;
 171
 172         __asm__ __volatile__(
 173         "       .set    push                                            \n"
 174         "       .set    noreorder                                       \n"
 175         "       .set    noat                                            \n"
 176         "       .set    mips32r2                                        \n"
 177         "       .word   0x41610001              # dvpe $1               \n"
 178         "       move    %0, $1                                          \n"
 179         "       ehb                                                     \n"
 180         "       .set    pop                                             \n"
 181         : "=r" (res));
 182
 183         instruction_hazard();
 184
 185         return res;
 186 }
 187
 188 static inline void __raw_evpe(void)
 189 {
 190         __asm__ __volatile__(
 191         "       .set    push                                            \n"
 192         "       .set    noreorder                                       \n"
 193         "       .set    noat                                            \n"
 194         "       .set    mips32r2                                        \n"
 195         "       .word   0x41600021              # evpe                  \n"
 196         "       ehb                                                     \n"
 197         "       .set    pop                                             \n");
 198 }
 199
 200 /* Enable virtual processor execution if previous suggested it should be.
 201    EVPE_ENABLE to force */
 202
 203 #define EVPE_ENABLE MVPCONTROL_EVP
 204
 205 static inline void evpe(int previous)
 206 {
 207         if ((previous & MVPCONTROL_EVP))
 208                 __raw_evpe();
 209 }
 210
 211 static inline unsigned int dmt(void)
 212 {
 213         int res;
 214
 215         __asm__ __volatile__(
 216         "       .set    push                                            \n"
 217         "       .set    mips32r2                                        \n"
 218         "       .set    noat                                            \n"
 219         "       .word   0x41610BC1                      # dmt $1        \n"
 220         "       ehb                                                     \n"
 221         "       move    %0, $1                                          \n"
 222         "       .set    pop                                             \n"
 223         : "=r" (res));
 224
 225         instruction_hazard();
 226
 227         return res;
 228 }
 229
 230 static inline void __raw_emt(void)
 231 {
 232         __asm__ __volatile__(
 233         "       .set    noreorder                                       \n"
 234         "       .set    mips32r2                                        \n"
 235         "       .word   0x41600be1                      # emt           \n"
 236         "       ehb                                                     \n"
 237         "       .set    mips0                                           \n"
 238         "       .set    reorder");
 239 }
 240
 241 /* enable multi-threaded execution if previous suggested it should be.
 242    EMT_ENABLE to force */
 243
 244 #define EMT_ENABLE VPECONTROL_TE
 245
 246 static inline void emt(int previous)
 247 {
 248         if ((previous & EMT_ENABLE))
 249                 __raw_emt();
 250 }
 251
 252 static inline void ehb(void)
 253 {
 254         __asm__ __volatile__(
 255         "       .set    mips32r2                                \n"
 256         "       ehb                                             \n"
 257         "       .set    mips0                                   \n");
 258 }
 259
 260 #define mftc0(rt,sel)                                                   \
 261 ({                                                                      \
 262          unsigned long  __res;                                          \
 263                                                                         \
 264         __asm__ __volatile__(                                           \
 265         "       .set    push                                    \n"     \
 266         "       .set    mips32r2                                \n"     \
 267         "       .set    noat                                    \n"     \
 268         "       # mftc0 $1, $" #rt ", " #sel "                  \n"     \
 269         "       .word   0x41000800 | (" #rt " << 16) | " #sel " \n"     \
 270         "       move    %0, $1                                  \n"     \
 271         "       .set    pop                                     \n"     \
 272         : "=r" (__res));                                                \
 273                                                                         \
 274         __res;                                                          \
 275 })
 276
 277 #define mftgpr(rt)                                                      \
 278 ({                                                                      \
 279         unsigned long __res;                                            \
 280                                                                         \
 281         __asm__ __volatile__(                                           \
 282         "       .set    push                                    \n"     \
 283         "       .set    noat                                    \n"     \
 284         "       .set    mips32r2                                \n"     \
 285         "       # mftgpr $1," #rt "                             \n"     \
 286         "       .word   0x41000820 | (" #rt " << 16)            \n"     \
 287         "       move    %0, $1                                  \n"     \
 288         "       .set    pop                                     \n"     \
 289         : "=r" (__res));                                                \
 290                                                                         \
 291         __res;                                                          \
 292 })
 293
 294 #define mftr(rt, u, sel)                                                        \
 295 ({                                                                      \
 296         unsigned long __res;                                            \
 297                                                                         \
 298         __asm__ __volatile__(                                           \
 299         "       mftr    %0, " #rt ", " #u ", " #sel "           \n"     \
 300         : "=r" (__res));                                                \
 301                                                                         \
 302         __res;                                                          \
 303 })
 304
 305 #define mttgpr(rd,v)                                                    \
 306 do {                                                                    \
 307         __asm__ __volatile__(                                           \
 308         "       .set    push                                    \n"     \
 309         "       .set    mips32r2                                \n"     \
 310         "       .set    noat                                    \n"     \
 311         "       move    $1, %0                                  \n"     \
 312         "       # mttgpr $1, " #rd "                            \n"     \
 313         "       .word   0x41810020 | (" #rd " << 11)            \n"     \
 314         "       .set    pop                                     \n"     \
 315         : : "r" (v));                                                   \
 316 } while (0)
 317
 318 #define mttc0(rd, sel, v)                                                       \
 319 ({                                                                      \
 320         __asm__ __volatile__(                                           \
 321         "       .set    push                                    \n"     \
 322         "       .set    mips32r2                                \n"     \
 323         "       .set    noat                                    \n"     \
 324         "       move    $1, %0                                  \n"     \
 325         "       # mttc0 %0," #rd ", " #sel "                    \n"     \
 326         "       .word   0x41810000 | (" #rd " << 11) | " #sel " \n"     \
 327         "       .set    pop                                     \n"     \
 328         :                                                               \
 329         : "r" (v));                                                     \
 330 })
 331
 332
 333 #define mttr(rd, u, sel, v)                                             \
 334 ({                                                                      \
 335         __asm__ __volatile__(                                           \
 336         "mttr   %0," #rd ", " #u ", " #sel                              \
 337         : : "r" (v));                                                   \
 338 })
 339
 340
 341 #define settc(tc)                                                       \
 342 do {                                                                    \
 343         write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \
 344         ehb();                                                          \
 345 } while (0)
 346
 347
 348 /* you *must* set the target tc (settc) before trying to use these */
 349 #define read_vpe_c0_vpecontrol()        mftc0(1, 1)
 350 #define write_vpe_c0_vpecontrol(val)    mttc0(1, 1, val)
 351 #define read_vpe_c0_vpeconf0()          mftc0(1, 2)
 352 #define write_vpe_c0_vpeconf0(val)      mttc0(1, 2, val)
 353 #define read_vpe_c0_count()             mftc0(9, 0)
 354 #define write_vpe_c0_count(val)         mttc0(9, 0, val)
 355 #define read_vpe_c0_status()            mftc0(12, 0)
 356 #define write_vpe_c0_status(val)        mttc0(12, 0, val)
 357 #define read_vpe_c0_cause()             mftc0(13, 0)
 358 #define write_vpe_c0_cause(val)         mttc0(13, 0, val)
 359 #define read_vpe_c0_config()            mftc0(16, 0)
 360 #define write_vpe_c0_config(val)        mttc0(16, 0, val)
 361 #define read_vpe_c0_config1()           mftc0(16, 1)
 362 #define write_vpe_c0_config1(val)       mttc0(16, 1, val)
 363 #define read_vpe_c0_config7()           mftc0(16, 7)
 364 #define write_vpe_c0_config7(val)       mttc0(16, 7, val)
 365 #define read_vpe_c0_ebase()             mftc0(15, 1)
 366 #define write_vpe_c0_ebase(val)         mttc0(15, 1, val)
 367 #define write_vpe_c0_compare(val)       mttc0(11, 0, val)
 368 #define read_vpe_c0_badvaddr()          mftc0(8, 0)
 369 #define read_vpe_c0_epc()               mftc0(14, 0)
 370 #define write_vpe_c0_epc(val)           mttc0(14, 0, val)
 371
 372
 373 /* TC */
 374 #define read_tc_c0_tcstatus()           mftc0(2, 1)
 375 #define write_tc_c0_tcstatus(val)       mttc0(2, 1, val)
 376 #define read_tc_c0_tcbind()             mftc0(2, 2)
 377 #define write_tc_c0_tcbind(val)         mttc0(2, 2, val)
 378 #define read_tc_c0_tcrestart()          mftc0(2, 3)
 379 #define write_tc_c0_tcrestart(val)      mttc0(2, 3, val)
 380 #define read_tc_c0_tchalt()             mftc0(2, 4)
 381 #define write_tc_c0_tchalt(val)         mttc0(2, 4, val)
 382 #define read_tc_c0_tccontext()          mftc0(2, 5)
 383 #define write_tc_c0_tccontext(val)      mttc0(2, 5, val)
 384
 385 /* GPR */
 386 #define read_tc_gpr_sp()                mftgpr(29)
 387 #define write_tc_gpr_sp(val)            mttgpr(29, val)
 388 #define read_tc_gpr_gp()                mftgpr(28)
 389 #define write_tc_gpr_gp(val)            mttgpr(28, val)
 390
 391 __BUILD_SET_C0(mvpcontrol)
 392
 393 #endif /* Not __ASSEMBLY__ */
 394
 395 #endif