1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Performance counter support for POWER5 (not POWER5++) processors. 4 * 5 * Copyright 2009 Paul Mackerras, IBM Corporation. 6 */ 7 #include <linux/kernel.h> 8 #include <linux/perf_event.h> 9 #include <linux/string.h> 10 #include <asm/reg.h> 11 #include <asm/cputable.h> 12 13 #include "internal.h" 14 15 /* 16 * Bits in event code for POWER5 (not POWER5++) 17 */ 18 #define PM_PMC_SH 20 /* PMC number (1-based) for direct events */ 19 #define PM_PMC_MSK 0xf 20 #define PM_PMC_MSKS (PM_PMC_MSK << PM_PMC_SH) 21 #define PM_UNIT_SH 16 /* TTMMUX number and setting - unit select */ 22 #define PM_UNIT_MSK 0xf 23 #define PM_BYTE_SH 12 /* Byte number of event bus to use */ 24 #define PM_BYTE_MSK 7 25 #define PM_GRS_SH 8 /* Storage subsystem mux select */ 26 #define PM_GRS_MSK 7 27 #define PM_BUSEVENT_MSK 0x80 /* Set if event uses event bus */ 28 #define PM_PMCSEL_MSK 0x7f 29 30 /* Values in PM_UNIT field */ 31 #define PM_FPU 0 32 #define PM_ISU0 1 33 #define PM_IFU 2 34 #define PM_ISU1 3 35 #define PM_IDU 4 36 #define PM_ISU0_ALT 6 37 #define PM_GRS 7 38 #define PM_LSU0 8 39 #define PM_LSU1 0xc 40 #define PM_LASTUNIT 0xc 41 42 /* 43 * Bits in MMCR1 for POWER5 44 */ 45 #define MMCR1_TTM0SEL_SH 62 46 #define MMCR1_TTM1SEL_SH 60 47 #define MMCR1_TTM2SEL_SH 58 48 #define MMCR1_TTM3SEL_SH 56 49 #define MMCR1_TTMSEL_MSK 3 50 #define MMCR1_TD_CP_DBG0SEL_SH 54 51 #define MMCR1_TD_CP_DBG1SEL_SH 52 52 #define MMCR1_TD_CP_DBG2SEL_SH 50 53 #define MMCR1_TD_CP_DBG3SEL_SH 48 54 #define MMCR1_GRS_L2SEL_SH 46 55 #define MMCR1_GRS_L2SEL_MSK 3 56 #define MMCR1_GRS_L3SEL_SH 44 57 #define MMCR1_GRS_L3SEL_MSK 3 58 #define MMCR1_GRS_MCSEL_SH 41 59 #define MMCR1_GRS_MCSEL_MSK 7 60 #define MMCR1_GRS_FABSEL_SH 39 61 #define MMCR1_GRS_FABSEL_MSK 3 62 #define MMCR1_PMC1_ADDER_SEL_SH 35 63 #define MMCR1_PMC2_ADDER_SEL_SH 34 64 #define MMCR1_PMC3_ADDER_SEL_SH 33 65 #define MMCR1_PMC4_ADDER_SEL_SH 32 66 #define MMCR1_PMC1SEL_SH 25 67 #define MMCR1_PMC2SEL_SH 17 68 #define MMCR1_PMC3SEL_SH 9 69 #define MMCR1_PMC4SEL_SH 1 70 #define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8) 71 #define MMCR1_PMCSEL_MSK 0x7f 72 73 /* 74 * Layout of constraint bits: 75 * 6666555555555544444444443333333333222222222211111111110000000000 76 * 3210987654321098765432109876543210987654321098765432109876543210 77 * <><>[ ><><>< ><> [ >[ >[ >< >< >< >< ><><><><><><> 78 * T0T1 NC G0G1G2 G3 UC PS1PS2 B0 B1 B2 B3 P6P5P4P3P2P1 79 * 80 * T0 - TTM0 constraint 81 * 54-55: TTM0SEL value (0=FPU, 2=IFU, 3=ISU1) 0xc0_0000_0000_0000 82 * 83 * T1 - TTM1 constraint 84 * 52-53: TTM1SEL value (0=IDU, 3=GRS) 0x30_0000_0000_0000 85 * 86 * NC - number of counters 87 * 51: NC error 0x0008_0000_0000_0000 88 * 48-50: number of events needing PMC1-4 0x0007_0000_0000_0000 89 * 90 * G0..G3 - GRS mux constraints 91 * 46-47: GRS_L2SEL value 92 * 44-45: GRS_L3SEL value 93 * 41-44: GRS_MCSEL value 94 * 39-40: GRS_FABSEL value 95 * Note that these match up with their bit positions in MMCR1 96 * 97 * UC - unit constraint: can't have all three of FPU|IFU|ISU1, ISU0, IDU|GRS 98 * 37: UC3 error 0x20_0000_0000 99 * 36: FPU|IFU|ISU1 events needed 0x10_0000_0000 100 * 35: ISU0 events needed 0x08_0000_0000 101 * 34: IDU|GRS events needed 0x04_0000_0000 102 * 103 * PS1 104 * 33: PS1 error 0x2_0000_0000 105 * 31-32: count of events needing PMC1/2 0x1_8000_0000 106 * 107 * PS2 108 * 30: PS2 error 0x4000_0000 109 * 28-29: count of events needing PMC3/4 0x3000_0000 110 * 111 * B0 112 * 24-27: Byte 0 event source 0x0f00_0000 113 * Encoding as for the event code 114 * 115 * B1, B2, B3 116 * 20-23, 16-19, 12-15: Byte 1, 2, 3 event sources 117 * 118 * P1..P6 119 * 0-11: Count of events needing PMC1..PMC6 120 */ 121 122 static const int grsel_shift[8] = { 123 MMCR1_GRS_L2SEL_SH, MMCR1_GRS_L2SEL_SH, MMCR1_GRS_L2SEL_SH, 124 MMCR1_GRS_L3SEL_SH, MMCR1_GRS_L3SEL_SH, MMCR1_GRS_L3SEL_SH, 125 MMCR1_GRS_MCSEL_SH, MMCR1_GRS_FABSEL_SH 126 }; 127 128 /* Masks and values for using events from the various units */ 129 static unsigned long unit_cons[PM_LASTUNIT+1][2] = { 130 [PM_FPU] = { 0xc0002000000000ul, 0x00001000000000ul }, 131 [PM_ISU0] = { 0x00002000000000ul, 0x00000800000000ul }, 132 [PM_ISU1] = { 0xc0002000000000ul, 0xc0001000000000ul }, 133 [PM_IFU] = { 0xc0002000000000ul, 0x80001000000000ul }, 134 [PM_IDU] = { 0x30002000000000ul, 0x00000400000000ul }, 135 [PM_GRS] = { 0x30002000000000ul, 0x30000400000000ul }, 136 }; 137 power5_get_constraint(u64 event,unsigned long * maskp,unsigned long * valp,u64 event_config1 __maybe_unused)138 static int power5_get_constraint(u64 event, unsigned long *maskp, 139 unsigned long *valp, u64 event_config1 __maybe_unused) 140 { 141 int pmc, byte, unit, sh; 142 int bit, fmask; 143 unsigned long mask = 0, value = 0; 144 int grp = -1; 145 146 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 147 if (pmc) { 148 if (pmc > 6) 149 return -1; 150 sh = (pmc - 1) * 2; 151 mask |= 2 << sh; 152 value |= 1 << sh; 153 if (pmc <= 4) 154 grp = (pmc - 1) >> 1; 155 else if (event != 0x500009 && event != 0x600005) 156 return -1; 157 } 158 if (event & PM_BUSEVENT_MSK) { 159 unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK; 160 if (unit > PM_LASTUNIT) 161 return -1; 162 if (unit == PM_ISU0_ALT) 163 unit = PM_ISU0; 164 mask |= unit_cons[unit][0]; 165 value |= unit_cons[unit][1]; 166 byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK; 167 if (byte >= 4) { 168 if (unit != PM_LSU1) 169 return -1; 170 /* Map LSU1 low word (bytes 4-7) to unit LSU1+1 */ 171 ++unit; 172 byte &= 3; 173 } 174 if (unit == PM_GRS) { 175 bit = event & 7; 176 fmask = (bit == 6)? 7: 3; 177 sh = grsel_shift[bit]; 178 mask |= (unsigned long)fmask << sh; 179 value |= (unsigned long)((event >> PM_GRS_SH) & fmask) 180 << sh; 181 } 182 /* 183 * Bus events on bytes 0 and 2 can be counted 184 * on PMC1/2; bytes 1 and 3 on PMC3/4. 185 */ 186 if (!pmc) 187 grp = byte & 1; 188 /* Set byte lane select field */ 189 mask |= 0xfUL << (24 - 4 * byte); 190 value |= (unsigned long)unit << (24 - 4 * byte); 191 } 192 if (grp == 0) { 193 /* increment PMC1/2 field */ 194 mask |= 0x200000000ul; 195 value |= 0x080000000ul; 196 } else if (grp == 1) { 197 /* increment PMC3/4 field */ 198 mask |= 0x40000000ul; 199 value |= 0x10000000ul; 200 } 201 if (pmc < 5) { 202 /* need a counter from PMC1-4 set */ 203 mask |= 0x8000000000000ul; 204 value |= 0x1000000000000ul; 205 } 206 *maskp = mask; 207 *valp = value; 208 return 0; 209 } 210 211 #define MAX_ALT 3 /* at most 3 alternatives for any event */ 212 213 static const unsigned int event_alternatives[][MAX_ALT] = { 214 { 0x120e4, 0x400002 }, /* PM_GRP_DISP_REJECT */ 215 { 0x410c7, 0x441084 }, /* PM_THRD_L2MISS_BOTH_CYC */ 216 { 0x100005, 0x600005 }, /* PM_RUN_CYC */ 217 { 0x100009, 0x200009, 0x500009 }, /* PM_INST_CMPL */ 218 { 0x300009, 0x400009 }, /* PM_INST_DISP */ 219 }; 220 221 /* 222 * Scan the alternatives table for a match and return the 223 * index into the alternatives table if found, else -1. 224 */ find_alternative(u64 event)225 static int find_alternative(u64 event) 226 { 227 int i, j; 228 229 for (i = 0; i < ARRAY_SIZE(event_alternatives); ++i) { 230 if (event < event_alternatives[i][0]) 231 break; 232 for (j = 0; j < MAX_ALT && event_alternatives[i][j]; ++j) 233 if (event == event_alternatives[i][j]) 234 return i; 235 } 236 return -1; 237 } 238 239 static const unsigned char bytedecode_alternatives[4][4] = { 240 /* PMC 1 */ { 0x21, 0x23, 0x25, 0x27 }, 241 /* PMC 2 */ { 0x07, 0x17, 0x0e, 0x1e }, 242 /* PMC 3 */ { 0x20, 0x22, 0x24, 0x26 }, 243 /* PMC 4 */ { 0x07, 0x17, 0x0e, 0x1e } 244 }; 245 246 /* 247 * Some direct events for decodes of event bus byte 3 have alternative 248 * PMCSEL values on other counters. This returns the alternative 249 * event code for those that do, or -1 otherwise. 250 */ find_alternative_bdecode(u64 event)251 static s64 find_alternative_bdecode(u64 event) 252 { 253 int pmc, altpmc, pp, j; 254 255 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 256 if (pmc == 0 || pmc > 4) 257 return -1; 258 altpmc = 5 - pmc; /* 1 <-> 4, 2 <-> 3 */ 259 pp = event & PM_PMCSEL_MSK; 260 for (j = 0; j < 4; ++j) { 261 if (bytedecode_alternatives[pmc - 1][j] == pp) { 262 return (event & ~(PM_PMC_MSKS | PM_PMCSEL_MSK)) | 263 (altpmc << PM_PMC_SH) | 264 bytedecode_alternatives[altpmc - 1][j]; 265 } 266 } 267 return -1; 268 } 269 power5_get_alternatives(u64 event,unsigned int flags,u64 alt[])270 static int power5_get_alternatives(u64 event, unsigned int flags, u64 alt[]) 271 { 272 int i, j, nalt = 1; 273 s64 ae; 274 275 alt[0] = event; 276 nalt = 1; 277 i = find_alternative(event); 278 if (i >= 0) { 279 for (j = 0; j < MAX_ALT; ++j) { 280 ae = event_alternatives[i][j]; 281 if (ae && ae != event) 282 alt[nalt++] = ae; 283 } 284 } else { 285 ae = find_alternative_bdecode(event); 286 if (ae > 0) 287 alt[nalt++] = ae; 288 } 289 return nalt; 290 } 291 292 /* 293 * Map of which direct events on which PMCs are marked instruction events. 294 * Indexed by PMCSEL value, bit i (LE) set if PMC i is a marked event. 295 * Bit 0 is set if it is marked for all PMCs. 296 * The 0x80 bit indicates a byte decode PMCSEL value. 297 */ 298 static unsigned char direct_event_is_marked[0x28] = { 299 0, /* 00 */ 300 0x1f, /* 01 PM_IOPS_CMPL */ 301 0x2, /* 02 PM_MRK_GRP_DISP */ 302 0xe, /* 03 PM_MRK_ST_CMPL, PM_MRK_ST_GPS, PM_MRK_ST_CMPL_INT */ 303 0, /* 04 */ 304 0x1c, /* 05 PM_MRK_BRU_FIN, PM_MRK_INST_FIN, PM_MRK_CRU_FIN */ 305 0x80, /* 06 */ 306 0x80, /* 07 */ 307 0, 0, 0,/* 08 - 0a */ 308 0x18, /* 0b PM_THRESH_TIMEO, PM_MRK_GRP_TIMEO */ 309 0, /* 0c */ 310 0x80, /* 0d */ 311 0x80, /* 0e */ 312 0, /* 0f */ 313 0, /* 10 */ 314 0x14, /* 11 PM_MRK_GRP_BR_REDIR, PM_MRK_GRP_IC_MISS */ 315 0, /* 12 */ 316 0x10, /* 13 PM_MRK_GRP_CMPL */ 317 0x1f, /* 14 PM_GRP_MRK, PM_MRK_{FXU,FPU,LSU}_FIN */ 318 0x2, /* 15 PM_MRK_GRP_ISSUED */ 319 0x80, /* 16 */ 320 0x80, /* 17 */ 321 0, 0, 0, 0, 0, 322 0x80, /* 1d */ 323 0x80, /* 1e */ 324 0, /* 1f */ 325 0x80, /* 20 */ 326 0x80, /* 21 */ 327 0x80, /* 22 */ 328 0x80, /* 23 */ 329 0x80, /* 24 */ 330 0x80, /* 25 */ 331 0x80, /* 26 */ 332 0x80, /* 27 */ 333 }; 334 335 /* 336 * Returns 1 if event counts things relating to marked instructions 337 * and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not. 338 */ power5_marked_instr_event(u64 event)339 static int power5_marked_instr_event(u64 event) 340 { 341 int pmc, psel; 342 int bit, byte, unit; 343 u32 mask; 344 345 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 346 psel = event & PM_PMCSEL_MSK; 347 if (pmc >= 5) 348 return 0; 349 350 bit = -1; 351 if (psel < sizeof(direct_event_is_marked)) { 352 if (direct_event_is_marked[psel] & (1 << pmc)) 353 return 1; 354 if (direct_event_is_marked[psel] & 0x80) 355 bit = 4; 356 else if (psel == 0x08) 357 bit = pmc - 1; 358 else if (psel == 0x10) 359 bit = 4 - pmc; 360 else if (psel == 0x1b && (pmc == 1 || pmc == 3)) 361 bit = 4; 362 } else if ((psel & 0x58) == 0x40) 363 bit = psel & 7; 364 365 if (!(event & PM_BUSEVENT_MSK)) 366 return 0; 367 368 byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK; 369 unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK; 370 if (unit == PM_LSU0) { 371 /* byte 1 bits 0-7, byte 2 bits 0,2-4,6 */ 372 mask = 0x5dff00; 373 } else if (unit == PM_LSU1 && byte >= 4) { 374 byte -= 4; 375 /* byte 4 bits 1,3,5,7, byte 5 bits 6-7, byte 7 bits 0-4,6 */ 376 mask = 0x5f00c0aa; 377 } else 378 return 0; 379 380 return (mask >> (byte * 8 + bit)) & 1; 381 } 382 power5_compute_mmcr(u64 event[],int n_ev,unsigned int hwc[],struct mmcr_regs * mmcr,struct perf_event * pevents[],u32 flags __maybe_unused)383 static int power5_compute_mmcr(u64 event[], int n_ev, 384 unsigned int hwc[], struct mmcr_regs *mmcr, 385 struct perf_event *pevents[], 386 u32 flags __maybe_unused) 387 { 388 unsigned long mmcr1 = 0; 389 unsigned long mmcra = MMCRA_SDAR_DCACHE_MISS | MMCRA_SDAR_ERAT_MISS; 390 unsigned int pmc, unit, byte, psel; 391 unsigned int ttm, grp; 392 int i, isbus, bit, grsel; 393 unsigned int pmc_inuse = 0; 394 unsigned int pmc_grp_use[2]; 395 unsigned char busbyte[4]; 396 unsigned char unituse[16]; 397 int ttmuse; 398 399 if (n_ev > 6) 400 return -1; 401 402 /* First pass to count resource use */ 403 pmc_grp_use[0] = pmc_grp_use[1] = 0; 404 memset(busbyte, 0, sizeof(busbyte)); 405 memset(unituse, 0, sizeof(unituse)); 406 for (i = 0; i < n_ev; ++i) { 407 pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK; 408 if (pmc) { 409 if (pmc > 6) 410 return -1; 411 if (pmc_inuse & (1 << (pmc - 1))) 412 return -1; 413 pmc_inuse |= 1 << (pmc - 1); 414 /* count 1/2 vs 3/4 use */ 415 if (pmc <= 4) 416 ++pmc_grp_use[(pmc - 1) >> 1]; 417 } 418 if (event[i] & PM_BUSEVENT_MSK) { 419 unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK; 420 byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK; 421 if (unit > PM_LASTUNIT) 422 return -1; 423 if (unit == PM_ISU0_ALT) 424 unit = PM_ISU0; 425 if (byte >= 4) { 426 if (unit != PM_LSU1) 427 return -1; 428 ++unit; 429 byte &= 3; 430 } 431 if (!pmc) 432 ++pmc_grp_use[byte & 1]; 433 if (busbyte[byte] && busbyte[byte] != unit) 434 return -1; 435 busbyte[byte] = unit; 436 unituse[unit] = 1; 437 } 438 } 439 if (pmc_grp_use[0] > 2 || pmc_grp_use[1] > 2) 440 return -1; 441 442 /* 443 * Assign resources and set multiplexer selects. 444 * 445 * PM_ISU0 can go either on TTM0 or TTM1, but that's the only 446 * choice we have to deal with. 447 */ 448 if (unituse[PM_ISU0] & 449 (unituse[PM_FPU] | unituse[PM_IFU] | unituse[PM_ISU1])) { 450 unituse[PM_ISU0_ALT] = 1; /* move ISU to TTM1 */ 451 unituse[PM_ISU0] = 0; 452 } 453 /* Set TTM[01]SEL fields. */ 454 ttmuse = 0; 455 for (i = PM_FPU; i <= PM_ISU1; ++i) { 456 if (!unituse[i]) 457 continue; 458 if (ttmuse++) 459 return -1; 460 mmcr1 |= (unsigned long)i << MMCR1_TTM0SEL_SH; 461 } 462 ttmuse = 0; 463 for (; i <= PM_GRS; ++i) { 464 if (!unituse[i]) 465 continue; 466 if (ttmuse++) 467 return -1; 468 mmcr1 |= (unsigned long)(i & 3) << MMCR1_TTM1SEL_SH; 469 } 470 if (ttmuse > 1) 471 return -1; 472 473 /* Set byte lane select fields, TTM[23]SEL and GRS_*SEL. */ 474 for (byte = 0; byte < 4; ++byte) { 475 unit = busbyte[byte]; 476 if (!unit) 477 continue; 478 if (unit == PM_ISU0 && unituse[PM_ISU0_ALT]) { 479 /* get ISU0 through TTM1 rather than TTM0 */ 480 unit = PM_ISU0_ALT; 481 } else if (unit == PM_LSU1 + 1) { 482 /* select lower word of LSU1 for this byte */ 483 mmcr1 |= 1ul << (MMCR1_TTM3SEL_SH + 3 - byte); 484 } 485 ttm = unit >> 2; 486 mmcr1 |= (unsigned long)ttm 487 << (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte); 488 } 489 490 /* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */ 491 for (i = 0; i < n_ev; ++i) { 492 pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK; 493 unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK; 494 byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK; 495 psel = event[i] & PM_PMCSEL_MSK; 496 isbus = event[i] & PM_BUSEVENT_MSK; 497 if (!pmc) { 498 /* Bus event or any-PMC direct event */ 499 for (pmc = 0; pmc < 4; ++pmc) { 500 if (pmc_inuse & (1 << pmc)) 501 continue; 502 grp = (pmc >> 1) & 1; 503 if (isbus) { 504 if (grp == (byte & 1)) 505 break; 506 } else if (pmc_grp_use[grp] < 2) { 507 ++pmc_grp_use[grp]; 508 break; 509 } 510 } 511 pmc_inuse |= 1 << pmc; 512 } else if (pmc <= 4) { 513 /* Direct event */ 514 --pmc; 515 if ((psel == 8 || psel == 0x10) && isbus && (byte & 2)) 516 /* add events on higher-numbered bus */ 517 mmcr1 |= 1ul << (MMCR1_PMC1_ADDER_SEL_SH - pmc); 518 } else { 519 /* Instructions or run cycles on PMC5/6 */ 520 --pmc; 521 } 522 if (isbus && unit == PM_GRS) { 523 bit = psel & 7; 524 grsel = (event[i] >> PM_GRS_SH) & PM_GRS_MSK; 525 mmcr1 |= (unsigned long)grsel << grsel_shift[bit]; 526 } 527 if (power5_marked_instr_event(event[i])) 528 mmcra |= MMCRA_SAMPLE_ENABLE; 529 if (pmc <= 3) 530 mmcr1 |= psel << MMCR1_PMCSEL_SH(pmc); 531 hwc[i] = pmc; 532 } 533 534 /* Return MMCRx values */ 535 mmcr->mmcr0 = 0; 536 if (pmc_inuse & 1) 537 mmcr->mmcr0 = MMCR0_PMC1CE; 538 if (pmc_inuse & 0x3e) 539 mmcr->mmcr0 |= MMCR0_PMCjCE; 540 mmcr->mmcr1 = mmcr1; 541 mmcr->mmcra = mmcra; 542 return 0; 543 } 544 power5_disable_pmc(unsigned int pmc,struct mmcr_regs * mmcr)545 static void power5_disable_pmc(unsigned int pmc, struct mmcr_regs *mmcr) 546 { 547 if (pmc <= 3) 548 mmcr->mmcr1 &= ~(0x7fUL << MMCR1_PMCSEL_SH(pmc)); 549 } 550 551 static int power5_generic_events[] = { 552 [PERF_COUNT_HW_CPU_CYCLES] = 0xf, 553 [PERF_COUNT_HW_INSTRUCTIONS] = 0x100009, 554 [PERF_COUNT_HW_CACHE_REFERENCES] = 0x4c1090, /* LD_REF_L1 */ 555 [PERF_COUNT_HW_CACHE_MISSES] = 0x3c1088, /* LD_MISS_L1 */ 556 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x230e4, /* BR_ISSUED */ 557 [PERF_COUNT_HW_BRANCH_MISSES] = 0x230e5, /* BR_MPRED_CR */ 558 }; 559 560 #define C(x) PERF_COUNT_HW_CACHE_##x 561 562 /* 563 * Table of generalized cache-related events. 564 * 0 means not supported, -1 means nonsensical, other values 565 * are event codes. 566 */ 567 static u64 power5_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { 568 [C(L1D)] = { /* RESULT_ACCESS RESULT_MISS */ 569 [C(OP_READ)] = { 0x4c1090, 0x3c1088 }, 570 [C(OP_WRITE)] = { 0x3c1090, 0xc10c3 }, 571 [C(OP_PREFETCH)] = { 0xc70e7, 0 }, 572 }, 573 [C(L1I)] = { /* RESULT_ACCESS RESULT_MISS */ 574 [C(OP_READ)] = { 0, 0 }, 575 [C(OP_WRITE)] = { -1, -1 }, 576 [C(OP_PREFETCH)] = { 0, 0 }, 577 }, 578 [C(LL)] = { /* RESULT_ACCESS RESULT_MISS */ 579 [C(OP_READ)] = { 0, 0x3c309b }, 580 [C(OP_WRITE)] = { 0, 0 }, 581 [C(OP_PREFETCH)] = { 0xc50c3, 0 }, 582 }, 583 [C(DTLB)] = { /* RESULT_ACCESS RESULT_MISS */ 584 [C(OP_READ)] = { 0x2c4090, 0x800c4 }, 585 [C(OP_WRITE)] = { -1, -1 }, 586 [C(OP_PREFETCH)] = { -1, -1 }, 587 }, 588 [C(ITLB)] = { /* RESULT_ACCESS RESULT_MISS */ 589 [C(OP_READ)] = { 0, 0x800c0 }, 590 [C(OP_WRITE)] = { -1, -1 }, 591 [C(OP_PREFETCH)] = { -1, -1 }, 592 }, 593 [C(BPU)] = { /* RESULT_ACCESS RESULT_MISS */ 594 [C(OP_READ)] = { 0x230e4, 0x230e5 }, 595 [C(OP_WRITE)] = { -1, -1 }, 596 [C(OP_PREFETCH)] = { -1, -1 }, 597 }, 598 [C(NODE)] = { /* RESULT_ACCESS RESULT_MISS */ 599 [C(OP_READ)] = { -1, -1 }, 600 [C(OP_WRITE)] = { -1, -1 }, 601 [C(OP_PREFETCH)] = { -1, -1 }, 602 }, 603 }; 604 605 static struct power_pmu power5_pmu = { 606 .name = "POWER5", 607 .n_counter = 6, 608 .max_alternatives = MAX_ALT, 609 .add_fields = 0x7000090000555ul, 610 .test_adder = 0x3000490000000ul, 611 .compute_mmcr = power5_compute_mmcr, 612 .get_constraint = power5_get_constraint, 613 .get_alternatives = power5_get_alternatives, 614 .disable_pmc = power5_disable_pmc, 615 .n_generic = ARRAY_SIZE(power5_generic_events), 616 .generic_events = power5_generic_events, 617 .cache_events = &power5_cache_events, 618 .flags = PPMU_HAS_SSLOT, 619 }; 620 init_power5_pmu(void)621 int init_power5_pmu(void) 622 { 623 if (!cur_cpu_spec->oprofile_cpu_type || 624 strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5")) 625 return -ENODEV; 626 627 return register_power_pmu(&power5_pmu); 628 } 629