arch/powerpc/kernel/power6-pmu.c

   1 /*
   2  * Performance counter support for POWER6 processors.
   3  *
   4  * Copyright 2008-2009 Paul Mackerras, IBM Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/perf_event.h>
  13 #include <linux/string.h>
  14 #include <asm/reg.h>
  15 #include <asm/cputable.h>
  16
  17 /*
  18  * Bits in event code for POWER6
  19  */
  20 #define PM_PMC_SH       20      /* PMC number (1-based) for direct events */
  21 #define PM_PMC_MSK      0x7
  22 #define PM_PMC_MSKS     (PM_PMC_MSK << PM_PMC_SH)
  23 #define PM_UNIT_SH      16      /* Unit event comes (TTMxSEL encoding) */
  24 #define PM_UNIT_MSK     0xf
  25 #define PM_UNIT_MSKS    (PM_UNIT_MSK << PM_UNIT_SH)
  26 #define PM_LLAV         0x8000  /* Load lookahead match value */
  27 #define PM_LLA          0x4000  /* Load lookahead match enable */
  28 #define PM_BYTE_SH      12      /* Byte of event bus to use */
  29 #define PM_BYTE_MSK     3
  30 #define PM_SUBUNIT_SH   8       /* Subunit event comes from (NEST_SEL enc.) */
  31 #define PM_SUBUNIT_MSK  7
  32 #define PM_SUBUNIT_MSKS (PM_SUBUNIT_MSK << PM_SUBUNIT_SH)
  33 #define PM_PMCSEL_MSK   0xff    /* PMCxSEL value */
  34 #define PM_BUSEVENT_MSK 0xf3700
  35
  36 /*
  37  * Bits in MMCR1 for POWER6
  38  */
  39 #define MMCR1_TTM0SEL_SH        60
  40 #define MMCR1_TTMSEL_SH(n)      (MMCR1_TTM0SEL_SH - (n) * 4)
  41 #define MMCR1_TTMSEL_MSK        0xf
  42 #define MMCR1_TTMSEL(m, n)      (((m) >> MMCR1_TTMSEL_SH(n)) & MMCR1_TTMSEL_MSK)
  43 #define MMCR1_NESTSEL_SH        45
  44 #define MMCR1_NESTSEL_MSK       0x7
  45 #define MMCR1_NESTSEL(m)        (((m) >> MMCR1_NESTSEL_SH) & MMCR1_NESTSEL_MSK)
  46 #define MMCR1_PMC1_LLA          (1ul << 44)
  47 #define MMCR1_PMC1_LLA_VALUE    (1ul << 39)
  48 #define MMCR1_PMC1_ADDR_SEL     (1ul << 35)
  49 #define MMCR1_PMC1SEL_SH        24
  50 #define MMCR1_PMCSEL_SH(n)      (MMCR1_PMC1SEL_SH - (n) * 8)
  51 #define MMCR1_PMCSEL_MSK        0xff
  52
  53 /*
  54  * Map of which direct events on which PMCs are marked instruction events.
  55  * Indexed by PMCSEL value >> 1.
  56  * Bottom 4 bits are a map of which PMCs are interesting,
  57  * top 4 bits say what sort of event:
  58  *   0 = direct marked event,
  59  *   1 = byte decode event,
  60  *   4 = add/and event (PMC1 -> bits 0 & 4),
  61  *   5 = add/and event (PMC1 -> bits 1 & 5),
  62  *   6 = add/and event (PMC1 -> bits 2 & 6),
  63  *   7 = add/and event (PMC1 -> bits 3 & 7).
  64  */
  65 static unsigned char direct_event_is_marked[0x60 >> 1] = {
  66         0,      /* 00 */
  67         0,      /* 02 */
  68         0,      /* 04 */
  69         0x07,   /* 06 PM_MRK_ST_CMPL, PM_MRK_ST_GPS, PM_MRK_ST_CMPL_INT */
  70         0x04,   /* 08 PM_MRK_DFU_FIN */
  71         0x06,   /* 0a PM_MRK_IFU_FIN, PM_MRK_INST_FIN */
  72         0,      /* 0c */
  73         0,      /* 0e */
  74         0x02,   /* 10 PM_MRK_INST_DISP */
  75         0x08,   /* 12 PM_MRK_LSU_DERAT_MISS */
  76         0,      /* 14 */
  77         0,      /* 16 */
  78         0x0c,   /* 18 PM_THRESH_TIMEO, PM_MRK_INST_FIN */
  79         0x0f,   /* 1a PM_MRK_INST_DISP, PM_MRK_{FXU,FPU,LSU}_FIN */
  80         0x01,   /* 1c PM_MRK_INST_ISSUED */
  81         0,      /* 1e */
  82         0,      /* 20 */
  83         0,      /* 22 */
  84         0,      /* 24 */
  85         0,      /* 26 */
  86         0x15,   /* 28 PM_MRK_DATA_FROM_L2MISS, PM_MRK_DATA_FROM_L3MISS */
  87         0,      /* 2a */
  88         0,      /* 2c */
  89         0,      /* 2e */
  90         0x4f,   /* 30 */
  91         0x7f,   /* 32 */
  92         0x4f,   /* 34 */
  93         0x5f,   /* 36 */
  94         0x6f,   /* 38 */
  95         0x4f,   /* 3a */
  96         0,      /* 3c */
  97         0x08,   /* 3e PM_MRK_INST_TIMEO */
  98         0x1f,   /* 40 */
  99         0x1f,   /* 42 */
 100         0x1f,   /* 44 */
 101         0x1f,   /* 46 */
 102         0x1f,   /* 48 */
 103         0x1f,   /* 4a */
 104         0x1f,   /* 4c */
 105         0x1f,   /* 4e */
 106         0,      /* 50 */
 107         0x05,   /* 52 PM_MRK_BR_TAKEN, PM_MRK_BR_MPRED */
 108         0x1c,   /* 54 PM_MRK_PTEG_FROM_L3MISS, PM_MRK_PTEG_FROM_L2MISS */
 109         0x02,   /* 56 PM_MRK_LD_MISS_L1 */
 110         0,      /* 58 */
 111         0,      /* 5a */
 112         0,      /* 5c */
 113         0,      /* 5e */
 114 };
 115
 116 /*
 117  * Masks showing for each unit which bits are marked events.
 118  * These masks are in LE order, i.e. 0x00000001 is byte 0, bit 0.
 119  */
 120 static u32 marked_bus_events[16] = {
 121         0x01000000,     /* direct events set 1: byte 3 bit 0 */
 122         0x00010000,     /* direct events set 2: byte 2 bit 0 */
 123         0, 0, 0, 0,     /* IDU, IFU, nest: nothing */
 124         0x00000088,     /* VMX set 1: byte 0 bits 3, 7 */
 125         0x000000c0,     /* VMX set 2: byte 0 bits 4-7 */
 126         0x04010000,     /* LSU set 1: byte 2 bit 0, byte 3 bit 2 */
 127         0xff010000u,    /* LSU set 2: byte 2 bit 0, all of byte 3 */
 128         0,              /* LSU set 3 */
 129         0x00000010,     /* VMX set 3: byte 0 bit 4 */
 130         0,              /* BFP set 1 */
 131         0x00000022,     /* BFP set 2: byte 0 bits 1, 5 */
 132         0, 0
 133 };
 134
 135 /*
 136  * Returns 1 if event counts things relating to marked instructions
 137  * and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not.
 138  */
 139 static int power6_marked_instr_event(u64 event)
 140 {
 141         int pmc, psel, ptype;
 142         int bit, byte, unit;
 143         u32 mask;
 144
 145         pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
 146         psel = (event & PM_PMCSEL_MSK) >> 1;    /* drop edge/level bit */
 147         if (pmc >= 5)
 148                 return 0;
 149
 150         bit = -1;
 151         if (psel < sizeof(direct_event_is_marked)) {
 152                 ptype = direct_event_is_marked[psel];
 153                 if (pmc == 0 || !(ptype & (1 << (pmc - 1))))
 154                         return 0;
 155                 ptype >>= 4;
 156                 if (ptype == 0)
 157                         return 1;
 158                 if (ptype == 1)
 159                         bit = 0;
 160                 else
 161                         bit = ptype ^ (pmc - 1);
 162         } else if ((psel & 0x48) == 0x40)
 163                 bit = psel & 7;
 164
 165         if (!(event & PM_BUSEVENT_MSK) || bit == -1)
 166                 return 0;
 167
 168         byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;
 169         unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK;
 170         mask = marked_bus_events[unit];
 171         return (mask >> (byte * 8 + bit)) & 1;
 172 }
 173
 174 /*
 175  * Assign PMC numbers and compute MMCR1 value for a set of events
 176  */
 177 static int p6_compute_mmcr(u64 event[], int n_ev,
 178                            unsigned int hwc[], unsigned long mmcr[])
 179 {
 180         unsigned long mmcr1 = 0;
 181         unsigned long mmcra = 0;
 182         int i;
 183         unsigned int pmc, ev, b, u, s, psel;
 184         unsigned int ttmset = 0;
 185         unsigned int pmc_inuse = 0;
 186
 187         if (n_ev > 6)
 188                 return -1;
 189         for (i = 0; i < n_ev; ++i) {
 190                 pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK;
 191                 if (pmc) {
 192                         if (pmc_inuse & (1 << (pmc - 1)))
 193                                 return -1;      /* collision! */
 194                         pmc_inuse |= 1 << (pmc - 1);
 195                 }
 196         }
 197         for (i = 0; i < n_ev; ++i) {
 198                 ev = event[i];
 199                 pmc = (ev >> PM_PMC_SH) & PM_PMC_MSK;
 200                 if (pmc) {
 201                         --pmc;
 202                 } else {
 203                         /* can go on any PMC; find a free one */
 204                         for (pmc = 0; pmc < 4; ++pmc)
 205                                 if (!(pmc_inuse & (1 << pmc)))
 206                                         break;
 207                         if (pmc >= 4)
 208                                 return -1;
 209                         pmc_inuse |= 1 << pmc;
 210                 }
 211                 hwc[i] = pmc;
 212                 psel = ev & PM_PMCSEL_MSK;
 213                 if (ev & PM_BUSEVENT_MSK) {
 214                         /* this event uses the event bus */
 215                         b = (ev >> PM_BYTE_SH) & PM_BYTE_MSK;
 216                         u = (ev >> PM_UNIT_SH) & PM_UNIT_MSK;
 217                         /* check for conflict on this byte of event bus */
 218                         if ((ttmset & (1 << b)) && MMCR1_TTMSEL(mmcr1, b) != u)
 219                                 return -1;
 220                         mmcr1 |= (unsigned long)u << MMCR1_TTMSEL_SH(b);
 221                         ttmset |= 1 << b;
 222                         if (u == 5) {
 223                                 /* Nest events have a further mux */
 224                                 s = (ev >> PM_SUBUNIT_SH) & PM_SUBUNIT_MSK;
 225                                 if ((ttmset & 0x10) &&
 226                                     MMCR1_NESTSEL(mmcr1) != s)
 227                                         return -1;
 228                                 ttmset |= 0x10;
 229                                 mmcr1 |= (unsigned long)s << MMCR1_NESTSEL_SH;
 230                         }
 231                         if (0x30 <= psel && psel <= 0x3d) {
 232                                 /* these need the PMCx_ADDR_SEL bits */
 233                                 if (b >= 2)
 234                                         mmcr1 |= MMCR1_PMC1_ADDR_SEL >> pmc;
 235                         }
 236                         /* bus select values are different for PMC3/4 */
 237                         if (pmc >= 2 && (psel & 0x90) == 0x80)
 238                                 psel ^= 0x20;
 239                 }
 240                 if (ev & PM_LLA) {
 241                         mmcr1 |= MMCR1_PMC1_LLA >> pmc;
 242                         if (ev & PM_LLAV)
 243                                 mmcr1 |= MMCR1_PMC1_LLA_VALUE >> pmc;
 244                 }
 245                 if (power6_marked_instr_event(event[i]))
 246                         mmcra |= MMCRA_SAMPLE_ENABLE;
 247                 if (pmc < 4)
 248                         mmcr1 |= (unsigned long)psel << MMCR1_PMCSEL_SH(pmc);
 249         }
 250         mmcr[0] = 0;
 251         if (pmc_inuse & 1)
 252                 mmcr[0] = MMCR0_PMC1CE;
 253         if (pmc_inuse & 0xe)
 254                 mmcr[0] |= MMCR0_PMCjCE;
 255         mmcr[1] = mmcr1;
 256         mmcr[2] = mmcra;
 257         return 0;
 258 }
 259
 260 /*
 261  * Layout of constraint bits:
 262  *
 263  *      0-1     add field: number of uses of PMC1 (max 1)
 264  *      2-3, 4-5, 6-7, 8-9, 10-11: ditto for PMC2, 3, 4, 5, 6
 265  *      12-15   add field: number of uses of PMC1-4 (max 4)
 266  *      16-19   select field: unit on byte 0 of event bus
 267  *      20-23, 24-27, 28-31 ditto for bytes 1, 2, 3
 268  *      32-34   select field: nest (subunit) event selector
 269  */
 270 static int p6_get_constraint(u64 event, unsigned long *maskp,
 271                              unsigned long *valp)
 272 {
 273         int pmc, byte, sh, subunit;
 274         unsigned long mask = 0, value = 0;
 275
 276         pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
 277         if (pmc) {
 278                 if (pmc > 4 && !(event == 0x500009 || event == 0x600005))
 279                         return -1;
 280                 sh = (pmc - 1) * 2;
 281                 mask |= 2 << sh;
 282                 value |= 1 << sh;
 283         }
 284         if (event & PM_BUSEVENT_MSK) {
 285                 byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;
 286                 sh = byte * 4 + (16 - PM_UNIT_SH);
 287                 mask |= PM_UNIT_MSKS << sh;
 288                 value |= (unsigned long)(event & PM_UNIT_MSKS) << sh;
 289                 if ((event & PM_UNIT_MSKS) == (5 << PM_UNIT_SH)) {
 290                         subunit = (event >> PM_SUBUNIT_SH) & PM_SUBUNIT_MSK;
 291                         mask  |= (unsigned long)PM_SUBUNIT_MSK << 32;
 292                         value |= (unsigned long)subunit << 32;
 293                 }
 294         }
 295         if (pmc <= 4) {
 296                 mask  |= 0x8000;        /* add field for count of PMC1-4 uses */
 297                 value |= 0x1000;
 298         }
 299         *maskp = mask;
 300         *valp = value;
 301         return 0;
 302 }
 303
 304 static int p6_limited_pmc_event(u64 event)
 305 {
 306         int pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
 307
 308         return pmc == 5 || pmc == 6;
 309 }
 310
 311 #define MAX_ALT 4       /* at most 4 alternatives for any event */
 312
 313 static const unsigned int event_alternatives[][MAX_ALT] = {
 314         { 0x0130e8, 0x2000f6, 0x3000fc },       /* PM_PTEG_RELOAD_VALID */
 315         { 0x080080, 0x10000d, 0x30000c, 0x4000f0 }, /* PM_LD_MISS_L1 */
 316         { 0x080088, 0x200054, 0x3000f0 },       /* PM_ST_MISS_L1 */
 317         { 0x10000a, 0x2000f4, 0x600005 },       /* PM_RUN_CYC */
 318         { 0x10000b, 0x2000f5 },                 /* PM_RUN_COUNT */
 319         { 0x10000e, 0x400010 },                 /* PM_PURR */
 320         { 0x100010, 0x4000f8 },                 /* PM_FLUSH */
 321         { 0x10001a, 0x200010 },                 /* PM_MRK_INST_DISP */
 322         { 0x100026, 0x3000f8 },                 /* PM_TB_BIT_TRANS */
 323         { 0x100054, 0x2000f0 },                 /* PM_ST_FIN */
 324         { 0x100056, 0x2000fc },                 /* PM_L1_ICACHE_MISS */
 325         { 0x1000f0, 0x40000a },                 /* PM_INST_IMC_MATCH_CMPL */
 326         { 0x1000f8, 0x200008 },                 /* PM_GCT_EMPTY_CYC */
 327         { 0x1000fc, 0x400006 },                 /* PM_LSU_DERAT_MISS_CYC */
 328         { 0x20000e, 0x400007 },                 /* PM_LSU_DERAT_MISS */
 329         { 0x200012, 0x300012 },                 /* PM_INST_DISP */
 330         { 0x2000f2, 0x3000f2 },                 /* PM_INST_DISP */
 331         { 0x2000f8, 0x300010 },                 /* PM_EXT_INT */
 332         { 0x2000fe, 0x300056 },                 /* PM_DATA_FROM_L2MISS */
 333         { 0x2d0030, 0x30001a },                 /* PM_MRK_FPU_FIN */
 334         { 0x30000a, 0x400018 },                 /* PM_MRK_INST_FIN */
 335         { 0x3000f6, 0x40000e },                 /* PM_L1_DCACHE_RELOAD_VALID */
 336         { 0x3000fe, 0x400056 },                 /* PM_DATA_FROM_L3MISS */
 337 };
 338
 339 /*
 340  * This could be made more efficient with a binary search on
 341  * a presorted list, if necessary
 342  */
 343 static int find_alternatives_list(u64 event)
 344 {
 345         int i, j;
 346         unsigned int alt;
 347
 348         for (i = 0; i < ARRAY_SIZE(event_alternatives); ++i) {
 349                 if (event < event_alternatives[i][0])
 350                         return -1;
 351                 for (j = 0; j < MAX_ALT; ++j) {
 352                         alt = event_alternatives[i][j];
 353                         if (!alt || event < alt)
 354                                 break;
 355                         if (event == alt)
 356                                 return i;
 357                 }
 358         }
 359         return -1;
 360 }
 361
 362 static int p6_get_alternatives(u64 event, unsigned int flags, u64 alt[])
 363 {
 364         int i, j, nlim;
 365         unsigned int psel, pmc;
 366         unsigned int nalt = 1;
 367         u64 aevent;
 368
 369         alt[0] = event;
 370         nlim = p6_limited_pmc_event(event);
 371
 372         /* check the alternatives table */
 373         i = find_alternatives_list(event);
 374         if (i >= 0) {
 375                 /* copy out alternatives from list */
 376                 for (j = 0; j < MAX_ALT; ++j) {
 377                         aevent = event_alternatives[i][j];
 378                         if (!aevent)
 379                                 break;
 380                         if (aevent != event)
 381                                 alt[nalt++] = aevent;
 382                         nlim += p6_limited_pmc_event(aevent);
 383                 }
 384
 385         } else {
 386                 /* Check for alternative ways of computing sum events */
 387                 /* PMCSEL 0x32 counter N == PMCSEL 0x34 counter 5-N */
 388                 psel = event & (PM_PMCSEL_MSK & ~1);    /* ignore edge bit */
 389                 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
 390                 if (pmc && (psel == 0x32 || psel == 0x34))
 391                         alt[nalt++] = ((event ^ 0x6) & ~PM_PMC_MSKS) |
 392                                 ((5 - pmc) << PM_PMC_SH);
 393
 394                 /* PMCSEL 0x38 counter N == PMCSEL 0x3a counter N+/-2 */
 395                 if (pmc && (psel == 0x38 || psel == 0x3a))
 396                         alt[nalt++] = ((event ^ 0x2) & ~PM_PMC_MSKS) |
 397                                 ((pmc > 2? pmc - 2: pmc + 2) << PM_PMC_SH);
 398         }
 399
 400         if (flags & PPMU_ONLY_COUNT_RUN) {
 401                 /*
 402                  * We're only counting in RUN state,
 403                  * so PM_CYC is equivalent to PM_RUN_CYC,
 404                  * PM_INST_CMPL === PM_RUN_INST_CMPL, PM_PURR === PM_RUN_PURR.
 405                  * This doesn't include alternatives that don't provide
 406                  * any extra flexibility in assigning PMCs (e.g.
 407                  * 0x10000a for PM_RUN_CYC vs. 0x1e for PM_CYC).
 408                  * Note that even with these additional alternatives
 409                  * we never end up with more than 4 alternatives for any event.
 410                  */
 411                 j = nalt;
 412                 for (i = 0; i < nalt; ++i) {
 413                         switch (alt[i]) {
 414                         case 0x1e:      /* PM_CYC */
 415                                 alt[j++] = 0x600005;    /* PM_RUN_CYC */
 416                                 ++nlim;
 417                                 break;
 418                         case 0x10000a:  /* PM_RUN_CYC */
 419                                 alt[j++] = 0x1e;        /* PM_CYC */
 420                                 break;
 421                         case 2:         /* PM_INST_CMPL */
 422                                 alt[j++] = 0x500009;    /* PM_RUN_INST_CMPL */
 423                                 ++nlim;
 424                                 break;
 425                         case 0x500009:  /* PM_RUN_INST_CMPL */
 426                                 alt[j++] = 2;           /* PM_INST_CMPL */
 427                                 break;
 428                         case 0x10000e:  /* PM_PURR */
 429                                 alt[j++] = 0x4000f4;    /* PM_RUN_PURR */
 430                                 break;
 431                         case 0x4000f4:  /* PM_RUN_PURR */
 432                                 alt[j++] = 0x10000e;    /* PM_PURR */
 433                                 break;
 434                         }
 435                 }
 436                 nalt = j;
 437         }
 438
 439         if (!(flags & PPMU_LIMITED_PMC_OK) && nlim) {
 440                 /* remove the limited PMC events */
 441                 j = 0;
 442                 for (i = 0; i < nalt; ++i) {
 443                         if (!p6_limited_pmc_event(alt[i])) {
 444                                 alt[j] = alt[i];
 445                                 ++j;
 446                         }
 447                 }
 448                 nalt = j;
 449         } else if ((flags & PPMU_LIMITED_PMC_REQD) && nlim < nalt) {
 450                 /* remove all but the limited PMC events */
 451                 j = 0;
 452                 for (i = 0; i < nalt; ++i) {
 453                         if (p6_limited_pmc_event(alt[i])) {
 454                                 alt[j] = alt[i];
 455                                 ++j;
 456                         }
 457                 }
 458                 nalt = j;
 459         }
 460
 461         return nalt;
 462 }
 463
 464 static void p6_disable_pmc(unsigned int pmc, unsigned long mmcr[])
 465 {
 466         /* Set PMCxSEL to 0 to disable PMCx */
 467         if (pmc <= 3)
 468                 mmcr[1] &= ~(0xffUL << MMCR1_PMCSEL_SH(pmc));
 469 }
 470
 471 static int power6_generic_events[] = {
 472         [PERF_COUNT_HW_CPU_CYCLES]              = 0x1e,
 473         [PERF_COUNT_HW_INSTRUCTIONS]            = 2,
 474         [PERF_COUNT_HW_CACHE_REFERENCES]        = 0x280030, /* LD_REF_L1 */
 475         [PERF_COUNT_HW_CACHE_MISSES]            = 0x30000c, /* LD_MISS_L1 */
 476         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS]     = 0x410a0,  /* BR_PRED */
 477         [PERF_COUNT_HW_BRANCH_MISSES]           = 0x400052, /* BR_MPRED */
 478 };
 479
 480 #define C(x)    PERF_COUNT_HW_CACHE_##x
 481
 482 /*
 483  * Table of generalized cache-related events.
 484  * 0 means not supported, -1 means nonsensical, other values
 485  * are event codes.
 486  * The "DTLB" and "ITLB" events relate to the DERAT and IERAT.
 487  */
 488 static int power6_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
 489         [C(L1D)] = {            /*      RESULT_ACCESS   RESULT_MISS */
 490                 [C(OP_READ)] = {        0x80082,        0x80080         },
 491                 [C(OP_WRITE)] = {       0x80086,        0x80088         },
 492                 [C(OP_PREFETCH)] = {    0x810a4,        0               },
 493         },
 494         [C(L1I)] = {            /*      RESULT_ACCESS   RESULT_MISS */
 495                 [C(OP_READ)] = {        0,              0x100056        },
 496                 [C(OP_WRITE)] = {       -1,             -1              },
 497                 [C(OP_PREFETCH)] = {    0x4008c,        0               },
 498         },
 499         [C(LL)] = {             /*      RESULT_ACCESS   RESULT_MISS */
 500                 [C(OP_READ)] = {        0x150730,       0x250532        },
 501                 [C(OP_WRITE)] = {       0x250432,       0x150432        },
 502                 [C(OP_PREFETCH)] = {    0x810a6,        0               },
 503         },
 504         [C(DTLB)] = {           /*      RESULT_ACCESS   RESULT_MISS */
 505                 [C(OP_READ)] = {        0,              0x20000e        },
 506                 [C(OP_WRITE)] = {       -1,             -1              },
 507                 [C(OP_PREFETCH)] = {    -1,             -1              },
 508         },
 509         [C(ITLB)] = {           /*      RESULT_ACCESS   RESULT_MISS */
 510                 [C(OP_READ)] = {        0,              0x420ce         },
 511                 [C(OP_WRITE)] = {       -1,             -1              },
 512                 [C(OP_PREFETCH)] = {    -1,             -1              },
 513         },
 514         [C(BPU)] = {            /*      RESULT_ACCESS   RESULT_MISS */
 515                 [C(OP_READ)] = {        0x430e6,        0x400052        },
 516                 [C(OP_WRITE)] = {       -1,             -1              },
 517                 [C(OP_PREFETCH)] = {    -1,             -1              },
 518         },
 519 };
 520
 521 static struct power_pmu power6_pmu = {
 522         .name                   = "POWER6",
 523         .n_counter              = 6,
 524         .max_alternatives       = MAX_ALT,
 525         .add_fields             = 0x1555,
 526         .test_adder             = 0x3000,
 527         .compute_mmcr           = p6_compute_mmcr,
 528         .get_constraint         = p6_get_constraint,
 529         .get_alternatives       = p6_get_alternatives,
 530         .disable_pmc            = p6_disable_pmc,
 531         .limited_pmc_event      = p6_limited_pmc_event,
 532         .flags                  = PPMU_LIMITED_PMC5_6 | PPMU_ALT_SIPR,
 533         .n_generic              = ARRAY_SIZE(power6_generic_events),
 534         .generic_events         = power6_generic_events,
 535         .cache_events           = &power6_cache_events,
 536 };
 537
 538 static int init_power6_pmu(void)
 539 {
 540         if (!cur_cpu_spec->oprofile_cpu_type ||
 541             strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power6"))
 542                 return -ENODEV;
 543
 544         return register_power_pmu(&power6_pmu);
 545 }
 546
 547 arch_initcall(init_power6_pmu);