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 write_c0_tchalt(val)            __write_32bit_c0_register($2, 4, val)
  40
  41 #define read_c0_tccontext()             __read_32bit_c0_register($2, 5)
  42 #define write_c0_tccontext(val)         __write_32bit_c0_register($2, 5, val)
  43
  44 #else /* Assembly */
  45 /*
  46  * Macros for use in assembly language code
  47  */
  48
  49 #define CP0_MVPCONTROL          $0, 1
  50 #define CP0_MVPCONF0            $0, 2
  51 #define CP0_MVPCONF1            $0, 3
  52 #define CP0_VPECONTROL          $1, 1
  53 #define CP0_VPECONF0            $1, 2
  54 #define CP0_VPECONF1            $1, 3
  55 #define CP0_YQMASK              $1, 4
  56 #define CP0_VPESCHEDULE         $1, 5
  57 #define CP0_VPESCHEFBK          $1, 6
  58 #define CP0_TCSTATUS            $2, 1
  59 #define CP0_TCBIND              $2, 2
  60 #define CP0_TCRESTART           $2, 3
  61 #define CP0_TCHALT              $2, 4
  62 #define CP0_TCCONTEXT           $2, 5
  63 #define CP0_TCSCHEDULE          $2, 6
  64 #define CP0_TCSCHEFBK           $2, 7
  65 #define CP0_SRSCONF0            $6, 1
  66 #define CP0_SRSCONF1            $6, 2
  67 #define CP0_SRSCONF2            $6, 3
  68 #define CP0_SRSCONF3            $6, 4
  69 #define CP0_SRSCONF4            $6, 5
  70
  71 #endif
  72
  73 /* MVPControl fields */
  74 #define MVPCONTROL_EVP          (_ULCAST_(1))
  75
  76 #define MVPCONTROL_VPC_SHIFT    1
  77 #define MVPCONTROL_VPC          (_ULCAST_(1) << MVPCONTROL_VPC_SHIFT)
  78
  79 #define MVPCONTROL_STLB_SHIFT   2
  80 #define MVPCONTROL_STLB         (_ULCAST_(1) << MVPCONTROL_STLB_SHIFT)
  81
  82
  83 /* MVPConf0 fields */
  84 #define MVPCONF0_PTC_SHIFT      0
  85 #define MVPCONF0_PTC            ( _ULCAST_(0xff))
  86 #define MVPCONF0_PVPE_SHIFT     10
  87 #define MVPCONF0_PVPE           ( _ULCAST_(0xf) << MVPCONF0_PVPE_SHIFT)
  88 #define MVPCONF0_TCA_SHIFT      15
  89 #define MVPCONF0_TCA            ( _ULCAST_(1) << MVPCONF0_TCA_SHIFT)
  90 #define MVPCONF0_PTLBE_SHIFT    16
  91 #define MVPCONF0_PTLBE          (_ULCAST_(0x3ff) << MVPCONF0_PTLBE_SHIFT)
  92 #define MVPCONF0_TLBS_SHIFT     29
  93 #define MVPCONF0_TLBS           (_ULCAST_(1) << MVPCONF0_TLBS_SHIFT)
  94 #define MVPCONF0_M_SHIFT        31
  95 #define MVPCONF0_M              (_ULCAST_(0x1) << MVPCONF0_M_SHIFT)
  96
  97
  98 /* config3 fields */
  99 #define CONFIG3_MT_SHIFT        2
 100 #define CONFIG3_MT              (_ULCAST_(1) << CONFIG3_MT_SHIFT)
 101
 102
 103 /* VPEControl fields (per VPE) */
 104 #define VPECONTROL_TARGTC       (_ULCAST_(0xff))
 105
 106 #define VPECONTROL_TE_SHIFT     15
 107 #define VPECONTROL_TE           (_ULCAST_(1) << VPECONTROL_TE_SHIFT)
 108 #define VPECONTROL_EXCPT_SHIFT  16
 109 #define VPECONTROL_EXCPT        (_ULCAST_(0x7) << VPECONTROL_EXCPT_SHIFT)
 110
 111 /* Thread Exception Codes for EXCPT field */
 112 #define THREX_TU                0
 113 #define THREX_TO                1
 114 #define THREX_IYQ               2
 115 #define THREX_GSX               3
 116 #define THREX_YSCH              4
 117 #define THREX_GSSCH             5
 118
 119 #define VPECONTROL_GSI_SHIFT    20
 120 #define VPECONTROL_GSI          (_ULCAST_(1) << VPECONTROL_GSI_SHIFT)
 121 #define VPECONTROL_YSI_SHIFT    21
 122 #define VPECONTROL_YSI          (_ULCAST_(1) << VPECONTROL_YSI_SHIFT)
 123
 124 /* VPEConf0 fields (per VPE) */
 125 #define VPECONF0_VPA_SHIFT      0
 126 #define VPECONF0_VPA            (_ULCAST_(1) << VPECONF0_VPA_SHIFT)
 127 #define VPECONF0_MVP_SHIFT      1
 128 #define VPECONF0_MVP            (_ULCAST_(1) << VPECONF0_MVP_SHIFT)
 129 #define VPECONF0_XTC_SHIFT      21
 130 #define VPECONF0_XTC            (_ULCAST_(0xff) << VPECONF0_XTC_SHIFT)
 131
 132 /* VPEConf1 fields (per VPE) */
 133 #define VPECONF1_NCP1_SHIFT     0
 134 #define VPECONF1_NCP1           (_ULCAST_(0xff) << VPECONF1_NCP1_SHIFT)
 135 #define VPECONF1_NCP2_SHIFT     10
 136 #define VPECONF1_NCP2           (_ULCAST_(0xff) << VPECONF1_NCP2_SHIFT)
 137 #define VPECONF1_NCX_SHIFT      20
 138 #define VPECONF1_NCX            (_ULCAST_(0xff) << VPECONF1_NCX_SHIFT)
 139
 140 /* TCStatus fields (per TC) */
 141 #define TCSTATUS_TASID          (_ULCAST_(0xff))
 142 #define TCSTATUS_IXMT_SHIFT     10
 143 #define TCSTATUS_IXMT           (_ULCAST_(1) << TCSTATUS_IXMT_SHIFT)
 144 #define TCSTATUS_TKSU_SHIFT     11
 145 #define TCSTATUS_TKSU           (_ULCAST_(3) << TCSTATUS_TKSU_SHIFT)
 146 #define TCSTATUS_A_SHIFT        13
 147 #define TCSTATUS_A              (_ULCAST_(1) << TCSTATUS_A_SHIFT)
 148 #define TCSTATUS_DA_SHIFT       15
 149 #define TCSTATUS_DA             (_ULCAST_(1) << TCSTATUS_DA_SHIFT)
 150 #define TCSTATUS_DT_SHIFT       20
 151 #define TCSTATUS_DT             (_ULCAST_(1) << TCSTATUS_DT_SHIFT)
 152 #define TCSTATUS_TDS_SHIFT      21
 153 #define TCSTATUS_TDS            (_ULCAST_(1) << TCSTATUS_TDS_SHIFT)
 154 #define TCSTATUS_TSST_SHIFT     22
 155 #define TCSTATUS_TSST           (_ULCAST_(1) << TCSTATUS_TSST_SHIFT)
 156 #define TCSTATUS_RNST_SHIFT     23
 157 #define TCSTATUS_RNST           (_ULCAST_(3) << TCSTATUS_RNST_SHIFT)
 158 /* Codes for RNST */
 159 #define TC_RUNNING              0
 160 #define TC_WAITING              1
 161 #define TC_YIELDING             2
 162 #define TC_GATED                3
 163
 164 #define TCSTATUS_TMX_SHIFT      27
 165 #define TCSTATUS_TMX            (_ULCAST_(1) << TCSTATUS_TMX_SHIFT)
 166 /* TCStatus TCU bits can use same definitions/offsets as CU bits in Status */
 167
 168 /* TCBind */
 169 #define TCBIND_CURVPE_SHIFT     0
 170 #define TCBIND_CURVPE           (_ULCAST_(0xf))
 171
 172 #define TCBIND_CURTC_SHIFT      21
 173
 174 #define TCBIND_CURTC            (_ULCAST_(0xff) << TCBIND_CURTC_SHIFT)
 175
 176 /* TCHalt */
 177 #define TCHALT_H                (_ULCAST_(1))
 178
 179 #ifndef __ASSEMBLY__
 180
 181 static inline unsigned core_nvpes(void)
 182 {
 183         unsigned conf0;
 184
 185         if (!cpu_has_mipsmt)
 186                 return 1;
 187
 188         conf0 = read_c0_mvpconf0();
 189         return ((conf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;
 190 }
 191
 192 static inline unsigned int dvpe(void)
 193 {
 194         int res = 0;
 195
 196         __asm__ __volatile__(
 197         "       .set    push                                            \n"
 198         "       .set    noreorder                                       \n"
 199         "       .set    noat                                            \n"
 200         "       .set    mips32r2                                        \n"
 201         "       .word   0x41610001              # dvpe $1               \n"
 202         "       move    %0, $1                                          \n"
 203         "       ehb                                                     \n"
 204         "       .set    pop                                             \n"
 205         : "=r" (res));
 206
 207         instruction_hazard();
 208
 209         return res;
 210 }
 211
 212 static inline void __raw_evpe(void)
 213 {
 214         __asm__ __volatile__(
 215         "       .set    push                                            \n"
 216         "       .set    noreorder                                       \n"
 217         "       .set    noat                                            \n"
 218         "       .set    mips32r2                                        \n"
 219         "       .word   0x41600021              # evpe                  \n"
 220         "       ehb                                                     \n"
 221         "       .set    pop                                             \n");
 222 }
 223
 224 /* Enable virtual processor execution if previous suggested it should be.
 225    EVPE_ENABLE to force */
 226
 227 #define EVPE_ENABLE MVPCONTROL_EVP
 228
 229 static inline void evpe(int previous)
 230 {
 231         if ((previous & MVPCONTROL_EVP))
 232                 __raw_evpe();
 233 }
 234
 235 static inline unsigned int dmt(void)
 236 {
 237         int res;
 238
 239         __asm__ __volatile__(
 240         "       .set    push                                            \n"
 241         "       .set    mips32r2                                        \n"
 242         "       .set    noat                                            \n"
 243         "       .word   0x41610BC1                      # dmt $1        \n"
 244         "       ehb                                                     \n"
 245         "       move    %0, $1                                          \n"
 246         "       .set    pop                                             \n"
 247         : "=r" (res));
 248
 249         instruction_hazard();
 250
 251         return res;
 252 }
 253
 254 static inline void __raw_emt(void)
 255 {
 256         __asm__ __volatile__(
 257         "       .set    noreorder                                       \n"
 258         "       .set    mips32r2                                        \n"
 259         "       .word   0x41600be1                      # emt           \n"
 260         "       ehb                                                     \n"
 261         "       .set    mips0                                           \n"
 262         "       .set    reorder");
 263 }
 264
 265 /* enable multi-threaded execution if previous suggested it should be.
 266    EMT_ENABLE to force */
 267
 268 #define EMT_ENABLE VPECONTROL_TE
 269
 270 static inline void emt(int previous)
 271 {
 272         if ((previous & EMT_ENABLE))
 273                 __raw_emt();
 274 }
 275
 276 static inline void ehb(void)
 277 {
 278         __asm__ __volatile__(
 279         "       .set    mips32r2                                \n"
 280         "       ehb                                             \n"
 281         "       .set    mips0                                   \n");
 282 }
 283
 284 #define mftc0(rt,sel)                                                   \
 285 ({                                                                      \
 286          unsigned long  __res;                                          \
 287                                                                         \
 288         __asm__ __volatile__(                                           \
 289         "       .set    push                                    \n"     \
 290         "       .set    mips32r2                                \n"     \
 291         "       .set    noat                                    \n"     \
 292         "       # mftc0 $1, $" #rt ", " #sel "                  \n"     \
 293         "       .word   0x41000800 | (" #rt " << 16) | " #sel " \n"     \
 294         "       move    %0, $1                                  \n"     \
 295         "       .set    pop                                     \n"     \
 296         : "=r" (__res));                                                \
 297                                                                         \
 298         __res;                                                          \
 299 })
 300
 301 #define mftgpr(rt)                                                      \
 302 ({                                                                      \
 303         unsigned long __res;                                            \
 304                                                                         \
 305         __asm__ __volatile__(                                           \
 306         "       .set    push                                    \n"     \
 307         "       .set    noat                                    \n"     \
 308         "       .set    mips32r2                                \n"     \
 309         "       # mftgpr $1," #rt "                             \n"     \
 310         "       .word   0x41000820 | (" #rt " << 16)            \n"     \
 311         "       move    %0, $1                                  \n"     \
 312         "       .set    pop                                     \n"     \
 313         : "=r" (__res));                                                \
 314                                                                         \
 315         __res;                                                          \
 316 })
 317
 318 #define mftr(rt, u, sel)                                                        \
 319 ({                                                                      \
 320         unsigned long __res;                                            \
 321                                                                         \
 322         __asm__ __volatile__(                                           \
 323         "       mftr    %0, " #rt ", " #u ", " #sel "           \n"     \
 324         : "=r" (__res));                                                \
 325                                                                         \
 326         __res;                                                          \
 327 })
 328
 329 #define mttgpr(rd,v)                                                    \
 330 do {                                                                    \
 331         __asm__ __volatile__(                                           \
 332         "       .set    push                                    \n"     \
 333         "       .set    mips32r2                                \n"     \
 334         "       .set    noat                                    \n"     \
 335         "       move    $1, %0                                  \n"     \
 336         "       # mttgpr $1, " #rd "                            \n"     \
 337         "       .word   0x41810020 | (" #rd " << 11)            \n"     \
 338         "       .set    pop                                     \n"     \
 339         : : "r" (v));                                                   \
 340 } while (0)
 341
 342 #define mttc0(rd, sel, v)                                                       \
 343 ({                                                                      \
 344         __asm__ __volatile__(                                           \
 345         "       .set    push                                    \n"     \
 346         "       .set    mips32r2                                \n"     \
 347         "       .set    noat                                    \n"     \
 348         "       move    $1, %0                                  \n"     \
 349         "       # mttc0 %0," #rd ", " #sel "                    \n"     \
 350         "       .word   0x41810000 | (" #rd " << 11) | " #sel " \n"     \
 351         "       .set    pop                                     \n"     \
 352         :                                                               \
 353         : "r" (v));                                                     \
 354 })
 355
 356
 357 #define mttr(rd, u, sel, v)                                             \
 358 ({                                                                      \
 359         __asm__ __volatile__(                                           \
 360         "mttr   %0," #rd ", " #u ", " #sel                              \
 361         : : "r" (v));                                                   \
 362 })
 363
 364
 365 #define settc(tc)                                                       \
 366 do {                                                                    \
 367         write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \
 368         ehb();                                                          \
 369 } while (0)
 370
 371
 372 /* you *must* set the target tc (settc) before trying to use these */
 373 #define read_vpe_c0_vpecontrol()        mftc0(1, 1)
 374 #define write_vpe_c0_vpecontrol(val)    mttc0(1, 1, val)
 375 #define read_vpe_c0_vpeconf0()          mftc0(1, 2)
 376 #define write_vpe_c0_vpeconf0(val)      mttc0(1, 2, val)
 377 #define read_vpe_c0_vpeconf1()          mftc0(1, 3)
 378 #define write_vpe_c0_vpeconf1(val)      mttc0(1, 3, val)
 379 #define read_vpe_c0_count()             mftc0(9, 0)
 380 #define write_vpe_c0_count(val)         mttc0(9, 0, val)
 381 #define read_vpe_c0_status()            mftc0(12, 0)
 382 #define write_vpe_c0_status(val)        mttc0(12, 0, val)
 383 #define read_vpe_c0_cause()             mftc0(13, 0)
 384 #define write_vpe_c0_cause(val)         mttc0(13, 0, val)
 385 #define read_vpe_c0_config()            mftc0(16, 0)
 386 #define write_vpe_c0_config(val)        mttc0(16, 0, val)
 387 #define read_vpe_c0_config1()           mftc0(16, 1)
 388 #define write_vpe_c0_config1(val)       mttc0(16, 1, val)
 389 #define read_vpe_c0_config7()           mftc0(16, 7)
 390 #define write_vpe_c0_config7(val)       mttc0(16, 7, val)
 391 #define read_vpe_c0_ebase()             mftc0(15, 1)
 392 #define write_vpe_c0_ebase(val)         mttc0(15, 1, val)
 393 #define write_vpe_c0_compare(val)       mttc0(11, 0, val)
 394 #define read_vpe_c0_badvaddr()          mftc0(8, 0)
 395 #define read_vpe_c0_epc()               mftc0(14, 0)
 396 #define write_vpe_c0_epc(val)           mttc0(14, 0, val)
 397
 398
 399 /* TC */
 400 #define read_tc_c0_tcstatus()           mftc0(2, 1)
 401 #define write_tc_c0_tcstatus(val)       mttc0(2, 1, val)
 402 #define read_tc_c0_tcbind()             mftc0(2, 2)
 403 #define write_tc_c0_tcbind(val)         mttc0(2, 2, val)
 404 #define read_tc_c0_tcrestart()          mftc0(2, 3)
 405 #define write_tc_c0_tcrestart(val)      mttc0(2, 3, val)
 406 #define read_tc_c0_tchalt()             mftc0(2, 4)
 407 #define write_tc_c0_tchalt(val)         mttc0(2, 4, val)
 408 #define read_tc_c0_tccontext()          mftc0(2, 5)
 409 #define write_tc_c0_tccontext(val)      mttc0(2, 5, val)
 410
 411 /* GPR */
 412 #define read_tc_gpr_sp()                mftgpr(29)
 413 #define write_tc_gpr_sp(val)            mttgpr(29, val)
 414 #define read_tc_gpr_gp()                mftgpr(28)
 415 #define write_tc_gpr_gp(val)            mttgpr(28, val)
 416
 417 __BUILD_SET_C0(mvpcontrol)
 418
 419 #endif /* Not __ASSEMBLY__ */
 420
 421 #endif