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_vpeconf1()              __read_32bit_c0_register($1, 3)
  32 #define write_c0_vpeconf1(val)          __write_32bit_c0_register($1, 3, val)
  33
  34 #define read_c0_tcstatus()              __read_32bit_c0_register($2, 1)
  35 #define write_c0_tcstatus(val)          __write_32bit_c0_register($2, 1, val)
  36
  37 #define read_c0_tcbind()                __read_32bit_c0_register($2, 2)
  38
  39 #define read_c0_tccontext()             __read_32bit_c0_register($2, 5)
  40 #define write_c0_tccontext(val)         __write_32bit_c0_register($2, 5, val)
  41
  42 #else /* Assembly */
  43 /*
  44  * Macros for use in assembly language code
  45  */
  46
  47 #define CP0_MVPCONTROL          $0, 1
  48 #define CP0_MVPCONF0            $0, 2
  49 #define CP0_MVPCONF1            $0, 3
  50 #define CP0_VPECONTROL          $1, 1
  51 #define CP0_VPECONF0            $1, 2
  52 #define CP0_VPECONF1            $1, 3
  53 #define CP0_YQMASK              $1, 4
  54 #define CP0_VPESCHEDULE         $1, 5
  55 #define CP0_VPESCHEFBK          $1, 6
  56 #define CP0_TCSTATUS            $2, 1
  57 #define CP0_TCBIND              $2, 2
  58 #define CP0_TCRESTART           $2, 3
  59 #define CP0_TCHALT              $2, 4
  60 #define CP0_TCCONTEXT           $2, 5
  61 #define CP0_TCSCHEDULE          $2, 6
  62 #define CP0_TCSCHEFBK           $2, 7
  63 #define CP0_SRSCONF0            $6, 1
  64 #define CP0_SRSCONF1            $6, 2
  65 #define CP0_SRSCONF2            $6, 3
  66 #define CP0_SRSCONF3            $6, 4
  67 #define CP0_SRSCONF4            $6, 5
  68
  69 #endif
  70
  71 /* MVPControl fields */
  72 #define MVPCONTROL_EVP          (_ULCAST_(1))
  73
  74 #define MVPCONTROL_VPC_SHIFT    1
  75 #define MVPCONTROL_VPC          (_ULCAST_(1) << MVPCONTROL_VPC_SHIFT)
  76
  77 #define MVPCONTROL_STLB_SHIFT   2
  78 #define MVPCONTROL_STLB         (_ULCAST_(1) << MVPCONTROL_STLB_SHIFT)
  79
  80
  81 /* MVPConf0 fields */
  82 #define MVPCONF0_PTC_SHIFT      0
  83 #define MVPCONF0_PTC            ( _ULCAST_(0xff))
  84 #define MVPCONF0_PVPE_SHIFT     10
  85 #define MVPCONF0_PVPE           ( _ULCAST_(0xf) << MVPCONF0_PVPE_SHIFT)
  86 #define MVPCONF0_TCA_SHIFT      15
  87 #define MVPCONF0_TCA            ( _ULCAST_(1) << MVPCONF0_TCA_SHIFT)
  88 #define MVPCONF0_PTLBE_SHIFT    16
  89 #define MVPCONF0_PTLBE          (_ULCAST_(0x3ff) << MVPCONF0_PTLBE_SHIFT)
  90 #define MVPCONF0_TLBS_SHIFT     29
  91 #define MVPCONF0_TLBS           (_ULCAST_(1) << MVPCONF0_TLBS_SHIFT)
  92 #define MVPCONF0_M_SHIFT        31
  93 #define MVPCONF0_M              (_ULCAST_(0x1) << MVPCONF0_M_SHIFT)
  94
  95
  96 /* config3 fields */
  97 #define CONFIG3_MT_SHIFT        2
  98 #define CONFIG3_MT              (_ULCAST_(1) << CONFIG3_MT_SHIFT)
  99
 100
 101 /* VPEControl fields (per VPE) */
 102 #define VPECONTROL_TARGTC       (_ULCAST_(0xff))
 103
 104 #define VPECONTROL_TE_SHIFT     15
 105 #define VPECONTROL_TE           (_ULCAST_(1) << VPECONTROL_TE_SHIFT)
 106 #define VPECONTROL_EXCPT_SHIFT  16
 107 #define VPECONTROL_EXCPT        (_ULCAST_(0x7) << VPECONTROL_EXCPT_SHIFT)
 108
 109 /* Thread Exception Codes for EXCPT field */
 110 #define THREX_TU                0
 111 #define THREX_TO                1
 112 #define THREX_IYQ               2
 113 #define THREX_GSX               3
 114 #define THREX_YSCH              4
 115 #define THREX_GSSCH             5
 116
 117 #define VPECONTROL_GSI_SHIFT    20
 118 #define VPECONTROL_GSI          (_ULCAST_(1) << VPECONTROL_GSI_SHIFT)
 119 #define VPECONTROL_YSI_SHIFT    21
 120 #define VPECONTROL_YSI          (_ULCAST_(1) << VPECONTROL_YSI_SHIFT)
 121
 122 /* VPEConf0 fields (per VPE) */
 123 #define VPECONF0_VPA_SHIFT      0
 124 #define VPECONF0_VPA            (_ULCAST_(1) << VPECONF0_VPA_SHIFT)
 125 #define VPECONF0_MVP_SHIFT      1
 126 #define VPECONF0_MVP            (_ULCAST_(1) << VPECONF0_MVP_SHIFT)
 127 #define VPECONF0_XTC_SHIFT      21
 128 #define VPECONF0_XTC            (_ULCAST_(0xff) << VPECONF0_XTC_SHIFT)
 129
 130 /* VPEConf1 fields (per VPE) */
 131 #define VPECONF1_NCP1_SHIFT     0
 132 #define VPECONF1_NCP1           (_ULCAST_(0xff) << VPECONF1_NCP1_SHIFT)
 133 #define VPECONF1_NCP2_SHIFT     10
 134 #define VPECONF1_NCP2           (_ULCAST_(0xff) << VPECONF1_NCP2_SHIFT)
 135 #define VPECONF1_NCX_SHIFT      20
 136 #define VPECONF1_NCX            (_ULCAST_(0xff) << VPECONF1_NCX_SHIFT)
 137
 138 /* TCStatus fields (per TC) */
 139 #define TCSTATUS_TASID          (_ULCAST_(0xff))
 140 #define TCSTATUS_IXMT_SHIFT     10
 141 #define TCSTATUS_IXMT           (_ULCAST_(1) << TCSTATUS_IXMT_SHIFT)
 142 #define TCSTATUS_TKSU_SHIFT     11
 143 #define TCSTATUS_TKSU           (_ULCAST_(3) << TCSTATUS_TKSU_SHIFT)
 144 #define TCSTATUS_A_SHIFT        13
 145 #define TCSTATUS_A              (_ULCAST_(1) << TCSTATUS_A_SHIFT)
 146 #define TCSTATUS_DA_SHIFT       15
 147 #define TCSTATUS_DA             (_ULCAST_(1) << TCSTATUS_DA_SHIFT)
 148 #define TCSTATUS_DT_SHIFT       20
 149 #define TCSTATUS_DT             (_ULCAST_(1) << TCSTATUS_DT_SHIFT)
 150 #define TCSTATUS_TDS_SHIFT      21
 151 #define TCSTATUS_TDS            (_ULCAST_(1) << TCSTATUS_TDS_SHIFT)
 152 #define TCSTATUS_TSST_SHIFT     22
 153 #define TCSTATUS_TSST           (_ULCAST_(1) << TCSTATUS_TSST_SHIFT)
 154 #define TCSTATUS_RNST_SHIFT     23
 155 #define TCSTATUS_RNST           (_ULCAST_(3) << TCSTATUS_RNST_SHIFT)
 156 /* Codes for RNST */
 157 #define TC_RUNNING              0
 158 #define TC_WAITING              1
 159 #define TC_YIELDING             2
 160 #define TC_GATED                3
 161
 162 #define TCSTATUS_TMX_SHIFT      27
 163 #define TCSTATUS_TMX            (_ULCAST_(1) << TCSTATUS_TMX_SHIFT)
 164 /* TCStatus TCU bits can use same definitions/offsets as CU bits in Status */
 165
 166 /* TCBind */
 167 #define TCBIND_CURVPE_SHIFT     0
 168 #define TCBIND_CURVPE           (_ULCAST_(0xf))
 169
 170 #define TCBIND_CURTC_SHIFT      21
 171
 172 #define TCBIND_CURTC            (_ULCAST_(0xff) << TCBIND_CURTC_SHIFT)
 173
 174 /* TCHalt */
 175 #define TCHALT_H                (_ULCAST_(1))
 176
 177 #ifndef __ASSEMBLY__
 178
 179 static inline unsigned int dvpe(void)
 180 {
 181         int res = 0;
 182
 183         __asm__ __volatile__(
 184         "       .set    push                                            \n"
 185         "       .set    noreorder                                       \n"
 186         "       .set    noat                                            \n"
 187         "       .set    mips32r2                                        \n"
 188         "       .word   0x41610001              # dvpe $1               \n"
 189         "       move    %0, $1                                          \n"
 190         "       ehb                                                     \n"
 191         "       .set    pop                                             \n"
 192         : "=r" (res));
 193
 194         instruction_hazard();
 195
 196         return res;
 197 }
 198
 199 static inline void __raw_evpe(void)
 200 {
 201         __asm__ __volatile__(
 202         "       .set    push                                            \n"
 203         "       .set    noreorder                                       \n"
 204         "       .set    noat                                            \n"
 205         "       .set    mips32r2                                        \n"
 206         "       .word   0x41600021              # evpe                  \n"
 207         "       ehb                                                     \n"
 208         "       .set    pop                                             \n");
 209 }
 210
 211 /* Enable virtual processor execution if previous suggested it should be.
 212    EVPE_ENABLE to force */
 213
 214 #define EVPE_ENABLE MVPCONTROL_EVP
 215
 216 static inline void evpe(int previous)
 217 {
 218         if ((previous & MVPCONTROL_EVP))
 219                 __raw_evpe();
 220 }
 221
 222 static inline unsigned int dmt(void)
 223 {
 224         int res;
 225
 226         __asm__ __volatile__(
 227         "       .set    push                                            \n"
 228         "       .set    mips32r2                                        \n"
 229         "       .set    noat                                            \n"
 230         "       .word   0x41610BC1                      # dmt $1        \n"
 231         "       ehb                                                     \n"
 232         "       move    %0, $1                                          \n"
 233         "       .set    pop                                             \n"
 234         : "=r" (res));
 235
 236         instruction_hazard();
 237
 238         return res;
 239 }
 240
 241 static inline void __raw_emt(void)
 242 {
 243         __asm__ __volatile__(
 244         "       .set    noreorder                                       \n"
 245         "       .set    mips32r2                                        \n"
 246         "       .word   0x41600be1                      # emt           \n"
 247         "       ehb                                                     \n"
 248         "       .set    mips0                                           \n"
 249         "       .set    reorder");
 250 }
 251
 252 /* enable multi-threaded execution if previous suggested it should be.
 253    EMT_ENABLE to force */
 254
 255 #define EMT_ENABLE VPECONTROL_TE
 256
 257 static inline void emt(int previous)
 258 {
 259         if ((previous & EMT_ENABLE))
 260                 __raw_emt();
 261 }
 262
 263 static inline void ehb(void)
 264 {
 265         __asm__ __volatile__(
 266         "       .set    mips32r2                                \n"
 267         "       ehb                                             \n"
 268         "       .set    mips0                                   \n");
 269 }
 270
 271 #define mftc0(rt,sel)                                                   \
 272 ({                                                                      \
 273          unsigned long  __res;                                          \
 274                                                                         \
 275         __asm__ __volatile__(                                           \
 276         "       .set    push                                    \n"     \
 277         "       .set    mips32r2                                \n"     \
 278         "       .set    noat                                    \n"     \
 279         "       # mftc0 $1, $" #rt ", " #sel "                  \n"     \
 280         "       .word   0x41000800 | (" #rt " << 16) | " #sel " \n"     \
 281         "       move    %0, $1                                  \n"     \
 282         "       .set    pop                                     \n"     \
 283         : "=r" (__res));                                                \
 284                                                                         \
 285         __res;                                                          \
 286 })
 287
 288 #define mftgpr(rt)                                                      \
 289 ({                                                                      \
 290         unsigned long __res;                                            \
 291                                                                         \
 292         __asm__ __volatile__(                                           \
 293         "       .set    push                                    \n"     \
 294         "       .set    noat                                    \n"     \
 295         "       .set    mips32r2                                \n"     \
 296         "       # mftgpr $1," #rt "                             \n"     \
 297         "       .word   0x41000820 | (" #rt " << 16)            \n"     \
 298         "       move    %0, $1                                  \n"     \
 299         "       .set    pop                                     \n"     \
 300         : "=r" (__res));                                                \
 301                                                                         \
 302         __res;                                                          \
 303 })
 304
 305 #define mftr(rt, u, sel)                                                        \
 306 ({                                                                      \
 307         unsigned long __res;                                            \
 308                                                                         \
 309         __asm__ __volatile__(                                           \
 310         "       mftr    %0, " #rt ", " #u ", " #sel "           \n"     \
 311         : "=r" (__res));                                                \
 312                                                                         \
 313         __res;                                                          \
 314 })
 315
 316 #define mttgpr(rd,v)                                                    \
 317 do {                                                                    \
 318         __asm__ __volatile__(                                           \
 319         "       .set    push                                    \n"     \
 320         "       .set    mips32r2                                \n"     \
 321         "       .set    noat                                    \n"     \
 322         "       move    $1, %0                                  \n"     \
 323         "       # mttgpr $1, " #rd "                            \n"     \
 324         "       .word   0x41810020 | (" #rd " << 11)            \n"     \
 325         "       .set    pop                                     \n"     \
 326         : : "r" (v));                                                   \
 327 } while (0)
 328
 329 #define mttc0(rd, sel, v)                                                       \
 330 ({                                                                      \
 331         __asm__ __volatile__(                                           \
 332         "       .set    push                                    \n"     \
 333         "       .set    mips32r2                                \n"     \
 334         "       .set    noat                                    \n"     \
 335         "       move    $1, %0                                  \n"     \
 336         "       # mttc0 %0," #rd ", " #sel "                    \n"     \
 337         "       .word   0x41810000 | (" #rd " << 11) | " #sel " \n"     \
 338         "       .set    pop                                     \n"     \
 339         :                                                               \
 340         : "r" (v));                                                     \
 341 })
 342
 343
 344 #define mttr(rd, u, sel, v)                                             \
 345 ({                                                                      \
 346         __asm__ __volatile__(                                           \
 347         "mttr   %0," #rd ", " #u ", " #sel                              \
 348         : : "r" (v));                                                   \
 349 })
 350
 351
 352 #define settc(tc)                                                       \
 353 do {                                                                    \
 354         write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \
 355         ehb();                                                          \
 356 } while (0)
 357
 358
 359 /* you *must* set the target tc (settc) before trying to use these */
 360 #define read_vpe_c0_vpecontrol()        mftc0(1, 1)
 361 #define write_vpe_c0_vpecontrol(val)    mttc0(1, 1, val)
 362 #define read_vpe_c0_vpeconf0()          mftc0(1, 2)
 363 #define write_vpe_c0_vpeconf0(val)      mttc0(1, 2, val)
 364 #define read_vpe_c0_vpeconf1()          mftc0(1, 3)
 365 #define write_vpe_c0_vpeconf1(val)      mttc0(1, 3, val)
 366 #define read_vpe_c0_count()             mftc0(9, 0)
 367 #define write_vpe_c0_count(val)         mttc0(9, 0, val)
 368 #define read_vpe_c0_status()            mftc0(12, 0)
 369 #define write_vpe_c0_status(val)        mttc0(12, 0, val)
 370 #define read_vpe_c0_cause()             mftc0(13, 0)
 371 #define write_vpe_c0_cause(val)         mttc0(13, 0, val)
 372 #define read_vpe_c0_config()            mftc0(16, 0)
 373 #define write_vpe_c0_config(val)        mttc0(16, 0, val)
 374 #define read_vpe_c0_config1()           mftc0(16, 1)
 375 #define write_vpe_c0_config1(val)       mttc0(16, 1, val)
 376 #define read_vpe_c0_config7()           mftc0(16, 7)
 377 #define write_vpe_c0_config7(val)       mttc0(16, 7, val)
 378 #define read_vpe_c0_ebase()             mftc0(15, 1)
 379 #define write_vpe_c0_ebase(val)         mttc0(15, 1, val)
 380 #define write_vpe_c0_compare(val)       mttc0(11, 0, val)
 381 #define read_vpe_c0_badvaddr()          mftc0(8, 0)
 382 #define read_vpe_c0_epc()               mftc0(14, 0)
 383 #define write_vpe_c0_epc(val)           mttc0(14, 0, val)
 384
 385
 386 /* TC */
 387 #define read_tc_c0_tcstatus()           mftc0(2, 1)
 388 #define write_tc_c0_tcstatus(val)       mttc0(2, 1, val)
 389 #define read_tc_c0_tcbind()             mftc0(2, 2)
 390 #define write_tc_c0_tcbind(val)         mttc0(2, 2, val)
 391 #define read_tc_c0_tcrestart()          mftc0(2, 3)
 392 #define write_tc_c0_tcrestart(val)      mttc0(2, 3, val)
 393 #define read_tc_c0_tchalt()             mftc0(2, 4)
 394 #define write_tc_c0_tchalt(val)         mttc0(2, 4, val)
 395 #define read_tc_c0_tccontext()          mftc0(2, 5)
 396 #define write_tc_c0_tccontext(val)      mttc0(2, 5, val)
 397
 398 /* GPR */
 399 #define read_tc_gpr_sp()                mftgpr(29)
 400 #define write_tc_gpr_sp(val)            mttgpr(29, val)
 401 #define read_tc_gpr_gp()                mftgpr(28)
 402 #define write_tc_gpr_gp(val)            mttgpr(28, val)
 403
 404 __BUILD_SET_C0(mvpcontrol)
 405
 406 #endif /* Not __ASSEMBLY__ */
 407
 408 #endif