1/* 2 * Performance counter support for POWER5+/++ (not POWER5) processors. 3 * 4 * Copyright 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 POWER5+ (POWER5 GS) and POWER5++ (POWER5 GS DD3) 19 */ 20#define PM_PMC_SH 20 /* PMC number (1-based) for direct events */ 21#define PM_PMC_MSK 0xf 22#define PM_PMC_MSKS (PM_PMC_MSK << PM_PMC_SH) 23#define PM_UNIT_SH 16 /* TTMMUX number and setting - unit select */ 24#define PM_UNIT_MSK 0xf 25#define PM_BYTE_SH 12 /* Byte number of event bus to use */ 26#define PM_BYTE_MSK 7 27#define PM_GRS_SH 8 /* Storage subsystem mux select */ 28#define PM_GRS_MSK 7 29#define PM_BUSEVENT_MSK 0x80 /* Set if event uses event bus */ 30#define PM_PMCSEL_MSK 0x7f 31 32/* Values in PM_UNIT field */ 33#define PM_FPU 0 34#define PM_ISU0 1 35#define PM_IFU 2 36#define PM_ISU1 3 37#define PM_IDU 4 38#define PM_ISU0_ALT 6 39#define PM_GRS 7 40#define PM_LSU0 8 41#define PM_LSU1 0xc 42#define PM_LASTUNIT 0xc 43 44/* 45 * Bits in MMCR1 for POWER5+ 46 */ 47#define MMCR1_TTM0SEL_SH 62 48#define MMCR1_TTM1SEL_SH 60 49#define MMCR1_TTM2SEL_SH 58 50#define MMCR1_TTM3SEL_SH 56 51#define MMCR1_TTMSEL_MSK 3 52#define MMCR1_TD_CP_DBG0SEL_SH 54 53#define MMCR1_TD_CP_DBG1SEL_SH 52 54#define MMCR1_TD_CP_DBG2SEL_SH 50 55#define MMCR1_TD_CP_DBG3SEL_SH 48 56#define MMCR1_GRS_L2SEL_SH 46 57#define MMCR1_GRS_L2SEL_MSK 3 58#define MMCR1_GRS_L3SEL_SH 44 59#define MMCR1_GRS_L3SEL_MSK 3 60#define MMCR1_GRS_MCSEL_SH 41 61#define MMCR1_GRS_MCSEL_MSK 7 62#define MMCR1_GRS_FABSEL_SH 39 63#define MMCR1_GRS_FABSEL_MSK 3 64#define MMCR1_PMC1_ADDER_SEL_SH 35 65#define MMCR1_PMC2_ADDER_SEL_SH 34 66#define MMCR1_PMC3_ADDER_SEL_SH 33 67#define MMCR1_PMC4_ADDER_SEL_SH 32 68#define MMCR1_PMC1SEL_SH 25 69#define MMCR1_PMC2SEL_SH 17 70#define MMCR1_PMC3SEL_SH 9 71#define MMCR1_PMC4SEL_SH 1 72#define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8) 73#define MMCR1_PMCSEL_MSK 0x7f 74 75/* 76 * Layout of constraint bits: 77 * 6666555555555544444444443333333333222222222211111111110000000000 78 * 3210987654321098765432109876543210987654321098765432109876543210 79 * [ ><><>< ><> <><>[ > < >< >< >< ><><><><><><> 80 * NC G0G1G2 G3 T0T1 UC B0 B1 B2 B3 P6P5P4P3P2P1 81 * 82 * NC - number of counters 83 * 51: NC error 0x0008_0000_0000_0000 84 * 48-50: number of events needing PMC1-4 0x0007_0000_0000_0000 85 * 86 * G0..G3 - GRS mux constraints 87 * 46-47: GRS_L2SEL value 88 * 44-45: GRS_L3SEL value 89 * 41-44: GRS_MCSEL value 90 * 39-40: GRS_FABSEL value 91 * Note that these match up with their bit positions in MMCR1 92 * 93 * T0 - TTM0 constraint 94 * 36-37: TTM0SEL value (0=FPU, 2=IFU, 3=ISU1) 0x30_0000_0000 95 * 96 * T1 - TTM1 constraint 97 * 34-35: TTM1SEL value (0=IDU, 3=GRS) 0x0c_0000_0000 98 * 99 * UC - unit constraint: can't have all three of FPU|IFU|ISU1, ISU0, IDU|GRS 100 * 33: UC3 error 0x02_0000_0000 101 * 32: FPU|IFU|ISU1 events needed 0x01_0000_0000 102 * 31: ISU0 events needed 0x01_8000_0000 103 * 30: IDU|GRS events needed 0x00_4000_0000 104 * 105 * B0 106 * 24-27: Byte 0 event source 0x0f00_0000 107 * Encoding as for the event code 108 * 109 * B1, B2, B3 110 * 20-23, 16-19, 12-15: Byte 1, 2, 3 event sources 111 * 112 * P6 113 * 11: P6 error 0x800 114 * 10-11: Count of events needing PMC6 115 * 116 * P1..P5 117 * 0-9: Count of events needing PMC1..PMC5 118 */ 119 120static const int grsel_shift[8] = { 121 MMCR1_GRS_L2SEL_SH, MMCR1_GRS_L2SEL_SH, MMCR1_GRS_L2SEL_SH, 122 MMCR1_GRS_L3SEL_SH, MMCR1_GRS_L3SEL_SH, MMCR1_GRS_L3SEL_SH, 123 MMCR1_GRS_MCSEL_SH, MMCR1_GRS_FABSEL_SH 124}; 125 126/* Masks and values for using events from the various units */ 127static unsigned long unit_cons[PM_LASTUNIT+1][2] = { 128 [PM_FPU] = { 0x3200000000ul, 0x0100000000ul }, 129 [PM_ISU0] = { 0x0200000000ul, 0x0080000000ul }, 130 [PM_ISU1] = { 0x3200000000ul, 0x3100000000ul }, 131 [PM_IFU] = { 0x3200000000ul, 0x2100000000ul }, 132 [PM_IDU] = { 0x0e00000000ul, 0x0040000000ul }, 133 [PM_GRS] = { 0x0e00000000ul, 0x0c40000000ul }, 134}; 135 136static int power5p_get_constraint(u64 event, unsigned long *maskp, 137 unsigned long *valp) 138{ 139 int pmc, byte, unit, sh; 140 int bit, fmask; 141 unsigned long mask = 0, value = 0; 142 143 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 144 if (pmc) { 145 if (pmc > 6) 146 return -1; 147 sh = (pmc - 1) * 2; 148 mask |= 2 << sh; 149 value |= 1 << sh; 150 if (pmc >= 5 && !(event == 0x500009 || event == 0x600005)) 151 return -1; 152 } 153 if (event & PM_BUSEVENT_MSK) { 154 unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK; 155 if (unit > PM_LASTUNIT) 156 return -1; 157 if (unit == PM_ISU0_ALT) 158 unit = PM_ISU0; 159 mask |= unit_cons[unit][0]; 160 value |= unit_cons[unit][1]; 161 byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK; 162 if (byte >= 4) { 163 if (unit != PM_LSU1) 164 return -1; 165 /* Map LSU1 low word (bytes 4-7) to unit LSU1+1 */ 166 ++unit; 167 byte &= 3; 168 } 169 if (unit == PM_GRS) { 170 bit = event & 7; 171 fmask = (bit == 6)? 7: 3; 172 sh = grsel_shift[bit]; 173 mask |= (unsigned long)fmask << sh; 174 value |= (unsigned long)((event >> PM_GRS_SH) & fmask) 175 << sh; 176 } 177 /* Set byte lane select field */ 178 mask |= 0xfUL << (24 - 4 * byte); 179 value |= (unsigned long)unit << (24 - 4 * byte); 180 } 181 if (pmc < 5) { 182 /* need a counter from PMC1-4 set */ 183 mask |= 0x8000000000000ul; 184 value |= 0x1000000000000ul; 185 } 186 *maskp = mask; 187 *valp = value; 188 return 0; 189} 190 191static int power5p_limited_pmc_event(u64 event) 192{ 193 int pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 194 195 return pmc == 5 || pmc == 6; 196} 197 198#define MAX_ALT 3 /* at most 3 alternatives for any event */ 199 200static const unsigned int event_alternatives[][MAX_ALT] = { 201 { 0x100c0, 0x40001f }, /* PM_GCT_FULL_CYC */ 202 { 0x120e4, 0x400002 }, /* PM_GRP_DISP_REJECT */ 203 { 0x230e2, 0x323087 }, /* PM_BR_PRED_CR */ 204 { 0x230e3, 0x223087, 0x3230a0 }, /* PM_BR_PRED_TA */ 205 { 0x410c7, 0x441084 }, /* PM_THRD_L2MISS_BOTH_CYC */ 206 { 0x800c4, 0xc20e0 }, /* PM_DTLB_MISS */ 207 { 0xc50c6, 0xc60e0 }, /* PM_MRK_DTLB_MISS */ 208 { 0x100005, 0x600005 }, /* PM_RUN_CYC */ 209 { 0x100009, 0x200009 }, /* PM_INST_CMPL */ 210 { 0x200015, 0x300015 }, /* PM_LSU_LMQ_SRQ_EMPTY_CYC */ 211 { 0x300009, 0x400009 }, /* PM_INST_DISP */ 212}; 213 214/* 215 * Scan the alternatives table for a match and return the 216 * index into the alternatives table if found, else -1. 217 */ 218static int find_alternative(unsigned int event) 219{ 220 int i, j; 221 222 for (i = 0; i < ARRAY_SIZE(event_alternatives); ++i) { 223 if (event < event_alternatives[i][0]) 224 break; 225 for (j = 0; j < MAX_ALT && event_alternatives[i][j]; ++j) 226 if (event == event_alternatives[i][j]) 227 return i; 228 } 229 return -1; 230} 231 232static const unsigned char bytedecode_alternatives[4][4] = { 233 /* PMC 1 */ { 0x21, 0x23, 0x25, 0x27 }, 234 /* PMC 2 */ { 0x07, 0x17, 0x0e, 0x1e }, 235 /* PMC 3 */ { 0x20, 0x22, 0x24, 0x26 }, 236 /* PMC 4 */ { 0x07, 0x17, 0x0e, 0x1e } 237}; 238 239/* 240 * Some direct events for decodes of event bus byte 3 have alternative 241 * PMCSEL values on other counters. This returns the alternative 242 * event code for those that do, or -1 otherwise. This also handles 243 * alternative PCMSEL values for add events. 244 */ 245static s64 find_alternative_bdecode(u64 event) 246{ 247 int pmc, altpmc, pp, j; 248 249 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 250 if (pmc == 0 || pmc > 4) 251 return -1; 252 altpmc = 5 - pmc; /* 1 <-> 4, 2 <-> 3 */ 253 pp = event & PM_PMCSEL_MSK; 254 for (j = 0; j < 4; ++j) { 255 if (bytedecode_alternatives[pmc - 1][j] == pp) { 256 return (event & ~(PM_PMC_MSKS | PM_PMCSEL_MSK)) | 257 (altpmc << PM_PMC_SH) | 258 bytedecode_alternatives[altpmc - 1][j]; 259 } 260 } 261 262 /* new decode alternatives for power5+ */ 263 if (pmc == 1 && (pp == 0x0d || pp == 0x0e)) 264 return event + (2 << PM_PMC_SH) + (0x2e - 0x0d); 265 if (pmc == 3 && (pp == 0x2e || pp == 0x2f)) 266 return event - (2 << PM_PMC_SH) - (0x2e - 0x0d); 267 268 /* alternative add event encodings */ 269 if (pp == 0x10 || pp == 0x28) 270 return ((event ^ (0x10 ^ 0x28)) & ~PM_PMC_MSKS) | 271 (altpmc << PM_PMC_SH); 272 273 return -1; 274} 275 276static int power5p_get_alternatives(u64 event, unsigned int flags, u64 alt[]) 277{ 278 int i, j, nalt = 1; 279 int nlim; 280 s64 ae; 281 282 alt[0] = event; 283 nalt = 1; 284 nlim = power5p_limited_pmc_event(event); 285 i = find_alternative(event); 286 if (i >= 0) { 287 for (j = 0; j < MAX_ALT; ++j) { 288 ae = event_alternatives[i][j]; 289 if (ae && ae != event) 290 alt[nalt++] = ae; 291 nlim += power5p_limited_pmc_event(ae); 292 } 293 } else { 294 ae = find_alternative_bdecode(event); 295 if (ae > 0) 296 alt[nalt++] = ae; 297 } 298 299 if (flags & PPMU_ONLY_COUNT_RUN) { 300 /* 301 * We're only counting in RUN state, 302 * so PM_CYC is equivalent to PM_RUN_CYC 303 * and PM_INST_CMPL === PM_RUN_INST_CMPL. 304 * This doesn't include alternatives that don't provide 305 * any extra flexibility in assigning PMCs (e.g. 306 * 0x100005 for PM_RUN_CYC vs. 0xf for PM_CYC). 307 * Note that even with these additional alternatives 308 * we never end up with more than 3 alternatives for any event. 309 */ 310 j = nalt; 311 for (i = 0; i < nalt; ++i) { 312 switch (alt[i]) { 313 case 0xf: /* PM_CYC */ 314 alt[j++] = 0x600005; /* PM_RUN_CYC */ 315 ++nlim; 316 break; 317 case 0x600005: /* PM_RUN_CYC */ 318 alt[j++] = 0xf; 319 break; 320 case 0x100009: /* PM_INST_CMPL */ 321 alt[j++] = 0x500009; /* PM_RUN_INST_CMPL */ 322 ++nlim; 323 break; 324 case 0x500009: /* PM_RUN_INST_CMPL */ 325 alt[j++] = 0x100009; /* PM_INST_CMPL */ 326 alt[j++] = 0x200009; 327 break; 328 } 329 } 330 nalt = j; 331 } 332 333 if (!(flags & PPMU_LIMITED_PMC_OK) && nlim) { 334 /* remove the limited PMC events */ 335 j = 0; 336 for (i = 0; i < nalt; ++i) { 337 if (!power5p_limited_pmc_event(alt[i])) { 338 alt[j] = alt[i]; 339 ++j; 340 } 341 } 342 nalt = j; 343 } else if ((flags & PPMU_LIMITED_PMC_REQD) && nlim < nalt) { 344 /* remove all but the limited PMC events */ 345 j = 0; 346 for (i = 0; i < nalt; ++i) { 347 if (power5p_limited_pmc_event(alt[i])) { 348 alt[j] = alt[i]; 349 ++j; 350 } 351 } 352 nalt = j; 353 } 354 355 return nalt; 356} 357 358/* 359 * Map of which direct events on which PMCs are marked instruction events. 360 * Indexed by PMCSEL value, bit i (LE) set if PMC i is a marked event. 361 * Bit 0 is set if it is marked for all PMCs. 362 * The 0x80 bit indicates a byte decode PMCSEL value. 363 */ 364static unsigned char direct_event_is_marked[0x28] = { 365 0, /* 00 */ 366 0x1f, /* 01 PM_IOPS_CMPL */ 367 0x2, /* 02 PM_MRK_GRP_DISP */ 368 0xe, /* 03 PM_MRK_ST_CMPL, PM_MRK_ST_GPS, PM_MRK_ST_CMPL_INT */ 369 0, /* 04 */ 370 0x1c, /* 05 PM_MRK_BRU_FIN, PM_MRK_INST_FIN, PM_MRK_CRU_FIN */ 371 0x80, /* 06 */ 372 0x80, /* 07 */ 373 0, 0, 0,/* 08 - 0a */ 374 0x18, /* 0b PM_THRESH_TIMEO, PM_MRK_GRP_TIMEO */ 375 0, /* 0c */ 376 0x80, /* 0d */ 377 0x80, /* 0e */ 378 0, /* 0f */ 379 0, /* 10 */ 380 0x14, /* 11 PM_MRK_GRP_BR_REDIR, PM_MRK_GRP_IC_MISS */ 381 0, /* 12 */ 382 0x10, /* 13 PM_MRK_GRP_CMPL */ 383 0x1f, /* 14 PM_GRP_MRK, PM_MRK_{FXU,FPU,LSU}_FIN */ 384 0x2, /* 15 PM_MRK_GRP_ISSUED */ 385 0x80, /* 16 */ 386 0x80, /* 17 */ 387 0, 0, 0, 0, 0, 388 0x80, /* 1d */ 389 0x80, /* 1e */ 390 0, /* 1f */ 391 0x80, /* 20 */ 392 0x80, /* 21 */ 393 0x80, /* 22 */ 394 0x80, /* 23 */ 395 0x80, /* 24 */ 396 0x80, /* 25 */ 397 0x80, /* 26 */ 398 0x80, /* 27 */ 399}; 400 401/* 402 * Returns 1 if event counts things relating to marked instructions 403 * and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not. 404 */ 405static int power5p_marked_instr_event(u64 event) 406{ 407 int pmc, psel; 408 int bit, byte, unit; 409 u32 mask; 410 411 pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; 412 psel = event & PM_PMCSEL_MSK; 413 if (pmc >= 5) 414 return 0; 415 416 bit = -1; 417 if (psel < sizeof(direct_event_is_marked)) { 418 if (direct_event_is_marked[psel] & (1 << pmc)) 419 return 1; 420 if (direct_event_is_marked[psel] & 0x80) 421 bit = 4; 422 else if (psel == 0x08) 423 bit = pmc - 1; 424 else if (psel == 0x10) 425 bit = 4 - pmc; 426 else if (psel == 0x1b && (pmc == 1 || pmc == 3)) 427 bit = 4; 428 } else if ((psel & 0x48) == 0x40) { 429 bit = psel & 7; 430 } else if (psel == 0x28) { 431 bit = pmc - 1; 432 } else if (pmc == 3 && (psel == 0x2e || psel == 0x2f)) { 433 bit = 4; 434 } 435 436 if (!(event & PM_BUSEVENT_MSK) || bit == -1) 437 return 0; 438 439 byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK; 440 unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK; 441 if (unit == PM_LSU0) { 442 /* byte 1 bits 0-7, byte 2 bits 0,2-4,6 */ 443 mask = 0x5dff00; 444 } else if (unit == PM_LSU1 && byte >= 4) { 445 byte -= 4; 446 /* byte 5 bits 6-7, byte 6 bits 0,4, byte 7 bits 0-4,6 */ 447 mask = 0x5f11c000; 448 } else 449 return 0; 450 451 return (mask >> (byte * 8 + bit)) & 1; 452} 453 454static int power5p_compute_mmcr(u64 event[], int n_ev, 455 unsigned int hwc[], unsigned long mmcr[]) 456{ 457 unsigned long mmcr1 = 0; 458 unsigned long mmcra = 0; 459 unsigned int pmc, unit, byte, psel; 460 unsigned int ttm; 461 int i, isbus, bit, grsel; 462 unsigned int pmc_inuse = 0; 463 unsigned char busbyte[4]; 464 unsigned char unituse[16]; 465 int ttmuse; 466 467 if (n_ev > 6) 468 return -1; 469 470 /* First pass to count resource use */ 471 memset(busbyte, 0, sizeof(busbyte)); 472 memset(unituse, 0, sizeof(unituse)); 473 for (i = 0; i < n_ev; ++i) { 474 pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK; 475 if (pmc) { 476 if (pmc > 6) 477 return -1; 478 if (pmc_inuse & (1 << (pmc - 1))) 479 return -1; 480 pmc_inuse |= 1 << (pmc - 1); 481 } 482 if (event[i] & PM_BUSEVENT_MSK) { 483 unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK; 484 byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK; 485 if (unit > PM_LASTUNIT) 486 return -1; 487 if (unit == PM_ISU0_ALT) 488 unit = PM_ISU0; 489 if (byte >= 4) { 490 if (unit != PM_LSU1) 491 return -1; 492 ++unit; 493 byte &= 3; 494 } 495 if (busbyte[byte] && busbyte[byte] != unit) 496 return -1; 497 busbyte[byte] = unit; 498 unituse[unit] = 1; 499 } 500 } 501 502 /* 503 * Assign resources and set multiplexer selects. 504 * 505 * PM_ISU0 can go either on TTM0 or TTM1, but that's the only 506 * choice we have to deal with. 507 */ 508 if (unituse[PM_ISU0] & 509 (unituse[PM_FPU] | unituse[PM_IFU] | unituse[PM_ISU1])) { 510 unituse[PM_ISU0_ALT] = 1; /* move ISU to TTM1 */ 511 unituse[PM_ISU0] = 0; 512 } 513 /* Set TTM[01]SEL fields. */ 514 ttmuse = 0; 515 for (i = PM_FPU; i <= PM_ISU1; ++i) { 516 if (!unituse[i]) 517 continue; 518 if (ttmuse++) 519 return -1; 520 mmcr1 |= (unsigned long)i << MMCR1_TTM0SEL_SH; 521 } 522 ttmuse = 0; 523 for (; i <= PM_GRS; ++i) { 524 if (!unituse[i]) 525 continue; 526 if (ttmuse++) 527 return -1; 528 mmcr1 |= (unsigned long)(i & 3) << MMCR1_TTM1SEL_SH; 529 } 530 if (ttmuse > 1) 531 return -1; 532 533 /* Set byte lane select fields, TTM[23]SEL and GRS_*SEL. */ 534 for (byte = 0; byte < 4; ++byte) { 535 unit = busbyte[byte]; 536 if (!unit) 537 continue; 538 if (unit == PM_ISU0 && unituse[PM_ISU0_ALT]) { 539 /* get ISU0 through TTM1 rather than TTM0 */ 540 unit = PM_ISU0_ALT; 541 } else if (unit == PM_LSU1 + 1) { 542 /* select lower word of LSU1 for this byte */ 543 mmcr1 |= 1ul << (MMCR1_TTM3SEL_SH + 3 - byte); 544 } 545 ttm = unit >> 2; 546 mmcr1 |= (unsigned long)ttm 547 << (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte); 548 } 549 550 /* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */ 551 for (i = 0; i < n_ev; ++i) { 552 pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK; 553 unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK; 554 byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK; 555 psel = event[i] & PM_PMCSEL_MSK; 556 isbus = event[i] & PM_BUSEVENT_MSK; 557 if (!pmc) { 558 /* Bus event or any-PMC direct event */ 559 for (pmc = 0; pmc < 4; ++pmc) { 560 if (!(pmc_inuse & (1 << pmc))) 561 break; 562 } 563 if (pmc >= 4) 564 return -1; 565 pmc_inuse |= 1 << pmc; 566 } else if (pmc <= 4) { 567 /* Direct event */ 568 --pmc; 569 if (isbus && (byte & 2) && 570 (psel == 8 || psel == 0x10 || psel == 0x28)) 571 /* add events on higher-numbered bus */ 572 mmcr1 |= 1ul << (MMCR1_PMC1_ADDER_SEL_SH - pmc); 573 } else { 574 /* Instructions or run cycles on PMC5/6 */ 575 --pmc; 576 } 577 if (isbus && unit == PM_GRS) { 578 bit = psel & 7; 579 grsel = (event[i] >> PM_GRS_SH) & PM_GRS_MSK; 580 mmcr1 |= (unsigned long)grsel << grsel_shift[bit]; 581 } 582 if (power5p_marked_instr_event(event[i])) 583 mmcra |= MMCRA_SAMPLE_ENABLE; 584 if ((psel & 0x58) == 0x40 && (byte & 1) != ((pmc >> 1) & 1)) 585 /* select alternate byte lane */ 586 psel |= 0x10; 587 if (pmc <= 3) 588 mmcr1 |= psel << MMCR1_PMCSEL_SH(pmc); 589 hwc[i] = pmc; 590 } 591 592 /* Return MMCRx values */ 593 mmcr[0] = 0; 594 if (pmc_inuse & 1) 595 mmcr[0] = MMCR0_PMC1CE; 596 if (pmc_inuse & 0x3e) 597 mmcr[0] |= MMCR0_PMCjCE; 598 mmcr[1] = mmcr1; 599 mmcr[2] = mmcra; 600 return 0; 601} 602 603static void power5p_disable_pmc(unsigned int pmc, unsigned long mmcr[]) 604{ 605 if (pmc <= 3) 606 mmcr[1] &= ~(0x7fUL << MMCR1_PMCSEL_SH(pmc)); 607} 608 609static int power5p_generic_events[] = { 610 [PERF_COUNT_HW_CPU_CYCLES] = 0xf, 611 [PERF_COUNT_HW_INSTRUCTIONS] = 0x100009, 612 [PERF_COUNT_HW_CACHE_REFERENCES] = 0x1c10a8, /* LD_REF_L1 */ 613 [PERF_COUNT_HW_CACHE_MISSES] = 0x3c1088, /* LD_MISS_L1 */ 614 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x230e4, /* BR_ISSUED */ 615 [PERF_COUNT_HW_BRANCH_MISSES] = 0x230e5, /* BR_MPRED_CR */ 616}; 617 618#define C(x) PERF_COUNT_HW_CACHE_##x 619 620/* 621 * Table of generalized cache-related events. 622 * 0 means not supported, -1 means nonsensical, other values 623 * are event codes. 624 */ 625static int power5p_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { 626 [C(L1D)] = { /* RESULT_ACCESS RESULT_MISS */ 627 [C(OP_READ)] = { 0x1c10a8, 0x3c1088 }, 628 [C(OP_WRITE)] = { 0x2c10a8, 0xc10c3 }, 629 [C(OP_PREFETCH)] = { 0xc70e7, -1 }, 630 }, 631 [C(L1I)] = { /* RESULT_ACCESS RESULT_MISS */ 632 [C(OP_READ)] = { 0, 0 }, 633 [C(OP_WRITE)] = { -1, -1 }, 634 [C(OP_PREFETCH)] = { 0, 0 }, 635 }, 636 [C(LL)] = { /* RESULT_ACCESS RESULT_MISS */ 637 [C(OP_READ)] = { 0, 0 }, 638 [C(OP_WRITE)] = { 0, 0 }, 639 [C(OP_PREFETCH)] = { 0xc50c3, 0 }, 640 }, 641 [C(DTLB)] = { /* RESULT_ACCESS RESULT_MISS */ 642 [C(OP_READ)] = { 0xc20e4, 0x800c4 }, 643 [C(OP_WRITE)] = { -1, -1 }, 644 [C(OP_PREFETCH)] = { -1, -1 }, 645 }, 646 [C(ITLB)] = { /* RESULT_ACCESS RESULT_MISS */ 647 [C(OP_READ)] = { 0, 0x800c0 }, 648 [C(OP_WRITE)] = { -1, -1 }, 649 [C(OP_PREFETCH)] = { -1, -1 }, 650 }, 651 [C(BPU)] = { /* RESULT_ACCESS RESULT_MISS */ 652 [C(OP_READ)] = { 0x230e4, 0x230e5 }, 653 [C(OP_WRITE)] = { -1, -1 }, 654 [C(OP_PREFETCH)] = { -1, -1 }, 655 }, 656}; 657 658static struct power_pmu power5p_pmu = { 659 .name = "POWER5+/++", 660 .n_counter = 6, 661 .max_alternatives = MAX_ALT, 662 .add_fields = 0x7000000000055ul, 663 .test_adder = 0x3000040000000ul, 664 .compute_mmcr = power5p_compute_mmcr, 665 .get_constraint = power5p_get_constraint, 666 .get_alternatives = power5p_get_alternatives, 667 .disable_pmc = power5p_disable_pmc, 668 .limited_pmc_event = power5p_limited_pmc_event, 669 .flags = PPMU_LIMITED_PMC5_6, 670 .n_generic = ARRAY_SIZE(power5p_generic_events), 671 .generic_events = power5p_generic_events, 672 .cache_events = &power5p_cache_events, 673}; 674 675static int init_power5p_pmu(void) 676{ 677 if (!cur_cpu_spec->oprofile_cpu_type || 678 (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5+") 679 && strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5++"))) 680 return -ENODEV; 681 682 return register_power_pmu(&power5p_pmu); 683} 684 685arch_initcall(init_power5p_pmu); 686