1 /* 2 * Linux performance counter support for ARC 3 * 4 * Copyright (C) 2011-2013 Synopsys, Inc. (www.synopsys.com) 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 */ 11 12 #ifndef __ASM_PERF_EVENT_H 13 #define __ASM_PERF_EVENT_H 14 15 /* real maximum varies per CPU, this is the maximum supported by the driver */ 16 #define ARC_PMU_MAX_HWEVENTS 64 17 18 #define ARC_REG_CC_BUILD 0xF6 19 #define ARC_REG_CC_INDEX 0x240 20 #define ARC_REG_CC_NAME0 0x241 21 #define ARC_REG_CC_NAME1 0x242 22 23 #define ARC_REG_PCT_BUILD 0xF5 24 #define ARC_REG_PCT_COUNTL 0x250 25 #define ARC_REG_PCT_COUNTH 0x251 26 #define ARC_REG_PCT_SNAPL 0x252 27 #define ARC_REG_PCT_SNAPH 0x253 28 #define ARC_REG_PCT_CONFIG 0x254 29 #define ARC_REG_PCT_CONTROL 0x255 30 #define ARC_REG_PCT_INDEX 0x256 31 32 #define ARC_REG_PCT_CONTROL_CC (1 << 16) /* clear counts */ 33 #define ARC_REG_PCT_CONTROL_SN (1 << 17) /* snapshot */ 34 35 struct arc_reg_pct_build { 36 #ifdef CONFIG_CPU_BIG_ENDIAN 37 unsigned int m:8, c:8, r:6, s:2, v:8; 38 #else 39 unsigned int v:8, s:2, r:6, c:8, m:8; 40 #endif 41 }; 42 43 struct arc_reg_cc_build { 44 #ifdef CONFIG_CPU_BIG_ENDIAN 45 unsigned int c:16, r:8, v:8; 46 #else 47 unsigned int v:8, r:8, c:16; 48 #endif 49 }; 50 51 #define PERF_COUNT_ARC_DCLM (PERF_COUNT_HW_MAX + 0) 52 #define PERF_COUNT_ARC_DCSM (PERF_COUNT_HW_MAX + 1) 53 #define PERF_COUNT_ARC_ICM (PERF_COUNT_HW_MAX + 2) 54 #define PERF_COUNT_ARC_BPOK (PERF_COUNT_HW_MAX + 3) 55 #define PERF_COUNT_ARC_EDTLB (PERF_COUNT_HW_MAX + 4) 56 #define PERF_COUNT_ARC_EITLB (PERF_COUNT_HW_MAX + 5) 57 #define PERF_COUNT_ARC_LDC (PERF_COUNT_HW_MAX + 6) 58 #define PERF_COUNT_ARC_STC (PERF_COUNT_HW_MAX + 7) 59 60 #define PERF_COUNT_ARC_HW_MAX (PERF_COUNT_HW_MAX + 8) 61 62 /* 63 * Some ARC pct quirks: 64 * 65 * PERF_COUNT_HW_STALLED_CYCLES_BACKEND 66 * PERF_COUNT_HW_STALLED_CYCLES_FRONTEND 67 * The ARC 700 can either measure stalls per pipeline stage, or all stalls 68 * combined; for now we assign all stalls to STALLED_CYCLES_BACKEND 69 * and all pipeline flushes (e.g. caused by mispredicts, etc.) to 70 * STALLED_CYCLES_FRONTEND. 71 * 72 * We could start multiple performance counters and combine everything 73 * afterwards, but that makes it complicated. 74 * 75 * Note that I$ cache misses aren't counted by either of the two! 76 */ 77 78 /* 79 * ARC PCT has hardware conditions with fixed "names" but variable "indexes" 80 * (based on a specific RTL build) 81 * Below is the static map between perf generic/arc specific event_id and 82 * h/w condition names. 83 * At the time of probe, we loop thru each index and find it's name to 84 * complete the mapping of perf event_id to h/w index as latter is needed 85 * to program the counter really 86 */ 87 static const char * const arc_pmu_ev_hw_map[] = { 88 /* count cycles */ 89 [PERF_COUNT_HW_CPU_CYCLES] = "crun", 90 [PERF_COUNT_HW_REF_CPU_CYCLES] = "crun", 91 [PERF_COUNT_HW_BUS_CYCLES] = "crun", 92 93 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = "bflush", 94 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = "bstall", 95 96 /* counts condition */ 97 [PERF_COUNT_HW_INSTRUCTIONS] = "iall", 98 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmp", 99 [PERF_COUNT_ARC_BPOK] = "bpok", /* NP-NT, PT-T, PNT-NT */ 100 [PERF_COUNT_HW_BRANCH_MISSES] = "bpfail", /* NP-T, PT-NT, PNT-T */ 101 102 [PERF_COUNT_ARC_LDC] = "imemrdc", /* Instr: mem read cached */ 103 [PERF_COUNT_ARC_STC] = "imemwrc", /* Instr: mem write cached */ 104 105 [PERF_COUNT_ARC_DCLM] = "dclm", /* D-cache Load Miss */ 106 [PERF_COUNT_ARC_DCSM] = "dcsm", /* D-cache Store Miss */ 107 [PERF_COUNT_ARC_ICM] = "icm", /* I-cache Miss */ 108 [PERF_COUNT_ARC_EDTLB] = "edtlb", /* D-TLB Miss */ 109 [PERF_COUNT_ARC_EITLB] = "eitlb", /* I-TLB Miss */ 110 }; 111 112 #define C(_x) PERF_COUNT_HW_CACHE_##_x 113 #define CACHE_OP_UNSUPPORTED 0xffff 114 115 static const unsigned arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { 116 [C(L1D)] = { 117 [C(OP_READ)] = { 118 [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC, 119 [C(RESULT_MISS)] = PERF_COUNT_ARC_DCLM, 120 }, 121 [C(OP_WRITE)] = { 122 [C(RESULT_ACCESS)] = PERF_COUNT_ARC_STC, 123 [C(RESULT_MISS)] = PERF_COUNT_ARC_DCSM, 124 }, 125 [C(OP_PREFETCH)] = { 126 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 127 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 128 }, 129 }, 130 [C(L1I)] = { 131 [C(OP_READ)] = { 132 [C(RESULT_ACCESS)] = PERF_COUNT_HW_INSTRUCTIONS, 133 [C(RESULT_MISS)] = PERF_COUNT_ARC_ICM, 134 }, 135 [C(OP_WRITE)] = { 136 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 137 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 138 }, 139 [C(OP_PREFETCH)] = { 140 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 141 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 142 }, 143 }, 144 [C(LL)] = { 145 [C(OP_READ)] = { 146 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 147 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 148 }, 149 [C(OP_WRITE)] = { 150 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 151 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 152 }, 153 [C(OP_PREFETCH)] = { 154 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 155 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 156 }, 157 }, 158 [C(DTLB)] = { 159 [C(OP_READ)] = { 160 [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC, 161 [C(RESULT_MISS)] = PERF_COUNT_ARC_EDTLB, 162 }, 163 /* DTLB LD/ST Miss not segregated by h/w*/ 164 [C(OP_WRITE)] = { 165 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 166 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 167 }, 168 [C(OP_PREFETCH)] = { 169 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 170 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 171 }, 172 }, 173 [C(ITLB)] = { 174 [C(OP_READ)] = { 175 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 176 [C(RESULT_MISS)] = PERF_COUNT_ARC_EITLB, 177 }, 178 [C(OP_WRITE)] = { 179 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 180 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 181 }, 182 [C(OP_PREFETCH)] = { 183 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 184 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 185 }, 186 }, 187 [C(BPU)] = { 188 [C(OP_READ)] = { 189 [C(RESULT_ACCESS)] = PERF_COUNT_HW_BRANCH_INSTRUCTIONS, 190 [C(RESULT_MISS)] = PERF_COUNT_HW_BRANCH_MISSES, 191 }, 192 [C(OP_WRITE)] = { 193 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 194 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 195 }, 196 [C(OP_PREFETCH)] = { 197 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 198 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 199 }, 200 }, 201 [C(NODE)] = { 202 [C(OP_READ)] = { 203 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 204 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 205 }, 206 [C(OP_WRITE)] = { 207 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 208 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 209 }, 210 [C(OP_PREFETCH)] = { 211 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, 212 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, 213 }, 214 }, 215 }; 216 217 #endif /* __ASM_PERF_EVENT_H */ 218