1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * ARMv7 Cortex-A8 and Cortex-A9 Performance Events handling code. 4 * 5 * ARMv7 support: Jean Pihet <jpihet@mvista.com> 6 * 2010 (c) MontaVista Software, LLC. 7 * 8 * Copied from ARMv6 code, with the low level code inspired 9 * by the ARMv7 Oprofile code. 10 * 11 * Cortex-A8 has up to 4 configurable performance counters and 12 * a single cycle counter. 13 * Cortex-A9 has up to 31 configurable performance counters and 14 * a single cycle counter. 15 * 16 * All counters can be enabled/disabled and IRQ masked separately. The cycle 17 * counter and all 4 performance counters together can be reset separately. 18 */ 19 20 #ifdef CONFIG_CPU_V7 21 22 #include <asm/cp15.h> 23 #include <asm/cputype.h> 24 #include <asm/irq_regs.h> 25 #include <asm/vfp.h> 26 #include "../vfp/vfpinstr.h" 27 28 #include <linux/of.h> 29 #include <linux/perf/arm_pmu.h> 30 #include <linux/platform_device.h> 31 32 /* 33 * Common ARMv7 event types 34 * 35 * Note: An implementation may not be able to count all of these events 36 * but the encodings are considered to be `reserved' in the case that 37 * they are not available. 38 */ 39 #define ARMV7_PERFCTR_PMNC_SW_INCR 0x00 40 #define ARMV7_PERFCTR_L1_ICACHE_REFILL 0x01 41 #define ARMV7_PERFCTR_ITLB_REFILL 0x02 42 #define ARMV7_PERFCTR_L1_DCACHE_REFILL 0x03 43 #define ARMV7_PERFCTR_L1_DCACHE_ACCESS 0x04 44 #define ARMV7_PERFCTR_DTLB_REFILL 0x05 45 #define ARMV7_PERFCTR_MEM_READ 0x06 46 #define ARMV7_PERFCTR_MEM_WRITE 0x07 47 #define ARMV7_PERFCTR_INSTR_EXECUTED 0x08 48 #define ARMV7_PERFCTR_EXC_TAKEN 0x09 49 #define ARMV7_PERFCTR_EXC_EXECUTED 0x0A 50 #define ARMV7_PERFCTR_CID_WRITE 0x0B 51 52 /* 53 * ARMV7_PERFCTR_PC_WRITE is equivalent to HW_BRANCH_INSTRUCTIONS. 54 * It counts: 55 * - all (taken) branch instructions, 56 * - instructions that explicitly write the PC, 57 * - exception generating instructions. 58 */ 59 #define ARMV7_PERFCTR_PC_WRITE 0x0C 60 #define ARMV7_PERFCTR_PC_IMM_BRANCH 0x0D 61 #define ARMV7_PERFCTR_PC_PROC_RETURN 0x0E 62 #define ARMV7_PERFCTR_MEM_UNALIGNED_ACCESS 0x0F 63 #define ARMV7_PERFCTR_PC_BRANCH_MIS_PRED 0x10 64 #define ARMV7_PERFCTR_CLOCK_CYCLES 0x11 65 #define ARMV7_PERFCTR_PC_BRANCH_PRED 0x12 66 67 /* These events are defined by the PMUv2 supplement (ARM DDI 0457A). */ 68 #define ARMV7_PERFCTR_MEM_ACCESS 0x13 69 #define ARMV7_PERFCTR_L1_ICACHE_ACCESS 0x14 70 #define ARMV7_PERFCTR_L1_DCACHE_WB 0x15 71 #define ARMV7_PERFCTR_L2_CACHE_ACCESS 0x16 72 #define ARMV7_PERFCTR_L2_CACHE_REFILL 0x17 73 #define ARMV7_PERFCTR_L2_CACHE_WB 0x18 74 #define ARMV7_PERFCTR_BUS_ACCESS 0x19 75 #define ARMV7_PERFCTR_MEM_ERROR 0x1A 76 #define ARMV7_PERFCTR_INSTR_SPEC 0x1B 77 #define ARMV7_PERFCTR_TTBR_WRITE 0x1C 78 #define ARMV7_PERFCTR_BUS_CYCLES 0x1D 79 80 #define ARMV7_PERFCTR_CPU_CYCLES 0xFF 81 82 /* ARMv7 Cortex-A8 specific event types */ 83 #define ARMV7_A8_PERFCTR_L2_CACHE_ACCESS 0x43 84 #define ARMV7_A8_PERFCTR_L2_CACHE_REFILL 0x44 85 #define ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS 0x50 86 #define ARMV7_A8_PERFCTR_STALL_ISIDE 0x56 87 88 /* ARMv7 Cortex-A9 specific event types */ 89 #define ARMV7_A9_PERFCTR_INSTR_CORE_RENAME 0x68 90 #define ARMV7_A9_PERFCTR_STALL_ICACHE 0x60 91 #define ARMV7_A9_PERFCTR_STALL_DISPATCH 0x66 92 93 /* ARMv7 Cortex-A5 specific event types */ 94 #define ARMV7_A5_PERFCTR_PREFETCH_LINEFILL 0xc2 95 #define ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP 0xc3 96 97 /* ARMv7 Cortex-A15 specific event types */ 98 #define ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_READ 0x40 99 #define ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_WRITE 0x41 100 #define ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_READ 0x42 101 #define ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_WRITE 0x43 102 103 #define ARMV7_A15_PERFCTR_DTLB_REFILL_L1_READ 0x4C 104 #define ARMV7_A15_PERFCTR_DTLB_REFILL_L1_WRITE 0x4D 105 106 #define ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_READ 0x50 107 #define ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_WRITE 0x51 108 #define ARMV7_A15_PERFCTR_L2_CACHE_REFILL_READ 0x52 109 #define ARMV7_A15_PERFCTR_L2_CACHE_REFILL_WRITE 0x53 110 111 #define ARMV7_A15_PERFCTR_PC_WRITE_SPEC 0x76 112 113 /* ARMv7 Cortex-A12 specific event types */ 114 #define ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_READ 0x40 115 #define ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_WRITE 0x41 116 117 #define ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_READ 0x50 118 #define ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_WRITE 0x51 119 120 #define ARMV7_A12_PERFCTR_PC_WRITE_SPEC 0x76 121 122 #define ARMV7_A12_PERFCTR_PF_TLB_REFILL 0xe7 123 124 /* ARMv7 Krait specific event types */ 125 #define KRAIT_PMRESR0_GROUP0 0xcc 126 #define KRAIT_PMRESR1_GROUP0 0xd0 127 #define KRAIT_PMRESR2_GROUP0 0xd4 128 #define KRAIT_VPMRESR0_GROUP0 0xd8 129 130 #define KRAIT_PERFCTR_L1_ICACHE_ACCESS 0x10011 131 #define KRAIT_PERFCTR_L1_ICACHE_MISS 0x10010 132 133 #define KRAIT_PERFCTR_L1_ITLB_ACCESS 0x12222 134 #define KRAIT_PERFCTR_L1_DTLB_ACCESS 0x12210 135 136 /* ARMv7 Scorpion specific event types */ 137 #define SCORPION_LPM0_GROUP0 0x4c 138 #define SCORPION_LPM1_GROUP0 0x50 139 #define SCORPION_LPM2_GROUP0 0x54 140 #define SCORPION_L2LPM_GROUP0 0x58 141 #define SCORPION_VLPM_GROUP0 0x5c 142 143 #define SCORPION_ICACHE_ACCESS 0x10053 144 #define SCORPION_ICACHE_MISS 0x10052 145 146 #define SCORPION_DTLB_ACCESS 0x12013 147 #define SCORPION_DTLB_MISS 0x12012 148 149 #define SCORPION_ITLB_MISS 0x12021 150 151 /* 152 * Cortex-A8 HW events mapping 153 * 154 * The hardware events that we support. We do support cache operations but 155 * we have harvard caches and no way to combine instruction and data 156 * accesses/misses in hardware. 157 */ 158 static const unsigned armv7_a8_perf_map[PERF_COUNT_HW_MAX] = { 159 PERF_MAP_ALL_UNSUPPORTED, 160 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 161 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 162 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 163 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 164 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE, 165 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 166 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV7_A8_PERFCTR_STALL_ISIDE, 167 }; 168 169 static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 170 [PERF_COUNT_HW_CACHE_OP_MAX] 171 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 172 PERF_CACHE_MAP_ALL_UNSUPPORTED, 173 174 /* 175 * The performance counters don't differentiate between read and write 176 * accesses/misses so this isn't strictly correct, but it's the best we 177 * can do. Writes and reads get combined. 178 */ 179 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 180 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 181 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 182 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 183 184 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS, 185 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL, 186 187 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L2_CACHE_ACCESS, 188 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A8_PERFCTR_L2_CACHE_REFILL, 189 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L2_CACHE_ACCESS, 190 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A8_PERFCTR_L2_CACHE_REFILL, 191 192 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 193 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 194 195 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 196 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 197 198 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 199 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 200 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 201 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 202 }; 203 204 /* 205 * Cortex-A9 HW events mapping 206 */ 207 static const unsigned armv7_a9_perf_map[PERF_COUNT_HW_MAX] = { 208 PERF_MAP_ALL_UNSUPPORTED, 209 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 210 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_A9_PERFCTR_INSTR_CORE_RENAME, 211 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 212 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 213 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE, 214 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 215 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV7_A9_PERFCTR_STALL_ICACHE, 216 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = ARMV7_A9_PERFCTR_STALL_DISPATCH, 217 }; 218 219 static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 220 [PERF_COUNT_HW_CACHE_OP_MAX] 221 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 222 PERF_CACHE_MAP_ALL_UNSUPPORTED, 223 224 /* 225 * The performance counters don't differentiate between read and write 226 * accesses/misses so this isn't strictly correct, but it's the best we 227 * can do. Writes and reads get combined. 228 */ 229 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 230 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 231 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 232 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 233 234 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL, 235 236 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 237 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 238 239 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 240 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 241 242 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 243 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 244 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 245 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 246 }; 247 248 /* 249 * Cortex-A5 HW events mapping 250 */ 251 static const unsigned armv7_a5_perf_map[PERF_COUNT_HW_MAX] = { 252 PERF_MAP_ALL_UNSUPPORTED, 253 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 254 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 255 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 256 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 257 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE, 258 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 259 }; 260 261 static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 262 [PERF_COUNT_HW_CACHE_OP_MAX] 263 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 264 PERF_CACHE_MAP_ALL_UNSUPPORTED, 265 266 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 267 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 268 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 269 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 270 [C(L1D)][C(OP_PREFETCH)][C(RESULT_ACCESS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL, 271 [C(L1D)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP, 272 273 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS, 274 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL, 275 /* 276 * The prefetch counters don't differentiate between the I side and the 277 * D side. 278 */ 279 [C(L1I)][C(OP_PREFETCH)][C(RESULT_ACCESS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL, 280 [C(L1I)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP, 281 282 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 283 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 284 285 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 286 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 287 288 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 289 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 290 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 291 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 292 }; 293 294 /* 295 * Cortex-A15 HW events mapping 296 */ 297 static const unsigned armv7_a15_perf_map[PERF_COUNT_HW_MAX] = { 298 PERF_MAP_ALL_UNSUPPORTED, 299 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 300 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 301 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 302 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 303 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_A15_PERFCTR_PC_WRITE_SPEC, 304 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 305 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES, 306 }; 307 308 static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 309 [PERF_COUNT_HW_CACHE_OP_MAX] 310 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 311 PERF_CACHE_MAP_ALL_UNSUPPORTED, 312 313 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_READ, 314 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_READ, 315 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_WRITE, 316 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_WRITE, 317 318 /* 319 * Not all performance counters differentiate between read and write 320 * accesses/misses so we're not always strictly correct, but it's the 321 * best we can do. Writes and reads get combined in these cases. 322 */ 323 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS, 324 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL, 325 326 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_READ, 327 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L2_CACHE_REFILL_READ, 328 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_WRITE, 329 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L2_CACHE_REFILL_WRITE, 330 331 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_DTLB_REFILL_L1_READ, 332 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_DTLB_REFILL_L1_WRITE, 333 334 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 335 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 336 337 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 338 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 339 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 340 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 341 }; 342 343 /* 344 * Cortex-A7 HW events mapping 345 */ 346 static const unsigned armv7_a7_perf_map[PERF_COUNT_HW_MAX] = { 347 PERF_MAP_ALL_UNSUPPORTED, 348 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 349 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 350 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 351 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 352 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE, 353 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 354 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES, 355 }; 356 357 static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 358 [PERF_COUNT_HW_CACHE_OP_MAX] 359 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 360 PERF_CACHE_MAP_ALL_UNSUPPORTED, 361 362 /* 363 * The performance counters don't differentiate between read and write 364 * accesses/misses so this isn't strictly correct, but it's the best we 365 * can do. Writes and reads get combined. 366 */ 367 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 368 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 369 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 370 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 371 372 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS, 373 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL, 374 375 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_CACHE_ACCESS, 376 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL, 377 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_CACHE_ACCESS, 378 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL, 379 380 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 381 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 382 383 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 384 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 385 386 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 387 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 388 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 389 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 390 }; 391 392 /* 393 * Cortex-A12 HW events mapping 394 */ 395 static const unsigned armv7_a12_perf_map[PERF_COUNT_HW_MAX] = { 396 PERF_MAP_ALL_UNSUPPORTED, 397 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 398 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 399 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 400 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 401 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_A12_PERFCTR_PC_WRITE_SPEC, 402 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 403 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES, 404 }; 405 406 static const unsigned armv7_a12_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 407 [PERF_COUNT_HW_CACHE_OP_MAX] 408 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 409 PERF_CACHE_MAP_ALL_UNSUPPORTED, 410 411 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_READ, 412 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 413 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_WRITE, 414 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 415 416 /* 417 * Not all performance counters differentiate between read and write 418 * accesses/misses so we're not always strictly correct, but it's the 419 * best we can do. Writes and reads get combined in these cases. 420 */ 421 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS, 422 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL, 423 424 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_READ, 425 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL, 426 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_WRITE, 427 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL, 428 429 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 430 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL, 431 [C(DTLB)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV7_A12_PERFCTR_PF_TLB_REFILL, 432 433 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 434 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL, 435 436 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 437 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 438 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 439 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 440 }; 441 442 /* 443 * Krait HW events mapping 444 */ 445 static const unsigned krait_perf_map[PERF_COUNT_HW_MAX] = { 446 PERF_MAP_ALL_UNSUPPORTED, 447 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 448 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 449 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE, 450 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 451 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES, 452 }; 453 454 static const unsigned krait_perf_map_no_branch[PERF_COUNT_HW_MAX] = { 455 PERF_MAP_ALL_UNSUPPORTED, 456 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 457 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 458 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 459 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES, 460 }; 461 462 static const unsigned krait_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 463 [PERF_COUNT_HW_CACHE_OP_MAX] 464 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 465 PERF_CACHE_MAP_ALL_UNSUPPORTED, 466 467 /* 468 * The performance counters don't differentiate between read and write 469 * accesses/misses so this isn't strictly correct, but it's the best we 470 * can do. Writes and reads get combined. 471 */ 472 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 473 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 474 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 475 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 476 477 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_ICACHE_ACCESS, 478 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = KRAIT_PERFCTR_L1_ICACHE_MISS, 479 480 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_DTLB_ACCESS, 481 [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_DTLB_ACCESS, 482 483 [C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_ITLB_ACCESS, 484 [C(ITLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_ITLB_ACCESS, 485 486 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 487 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 488 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 489 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 490 }; 491 492 /* 493 * Scorpion HW events mapping 494 */ 495 static const unsigned scorpion_perf_map[PERF_COUNT_HW_MAX] = { 496 PERF_MAP_ALL_UNSUPPORTED, 497 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES, 498 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED, 499 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE, 500 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 501 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES, 502 }; 503 504 static const unsigned scorpion_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] 505 [PERF_COUNT_HW_CACHE_OP_MAX] 506 [PERF_COUNT_HW_CACHE_RESULT_MAX] = { 507 PERF_CACHE_MAP_ALL_UNSUPPORTED, 508 /* 509 * The performance counters don't differentiate between read and write 510 * accesses/misses so this isn't strictly correct, but it's the best we 511 * can do. Writes and reads get combined. 512 */ 513 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 514 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 515 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS, 516 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL, 517 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = SCORPION_ICACHE_ACCESS, 518 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = SCORPION_ICACHE_MISS, 519 /* 520 * Only ITLB misses and DTLB refills are supported. If users want the 521 * DTLB refills misses a raw counter must be used. 522 */ 523 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = SCORPION_DTLB_ACCESS, 524 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = SCORPION_DTLB_MISS, 525 [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = SCORPION_DTLB_ACCESS, 526 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = SCORPION_DTLB_MISS, 527 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = SCORPION_ITLB_MISS, 528 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = SCORPION_ITLB_MISS, 529 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 530 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 531 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED, 532 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED, 533 }; 534 535 PMU_FORMAT_ATTR(event, "config:0-7"); 536 537 static struct attribute *armv7_pmu_format_attrs[] = { 538 &format_attr_event.attr, 539 NULL, 540 }; 541 542 static struct attribute_group armv7_pmu_format_attr_group = { 543 .name = "format", 544 .attrs = armv7_pmu_format_attrs, 545 }; 546 547 #define ARMV7_EVENT_ATTR_RESOLVE(m) #m 548 #define ARMV7_EVENT_ATTR(name, config) \ 549 PMU_EVENT_ATTR_STRING(name, armv7_event_attr_##name, \ 550 "event=" ARMV7_EVENT_ATTR_RESOLVE(config)) 551 552 ARMV7_EVENT_ATTR(sw_incr, ARMV7_PERFCTR_PMNC_SW_INCR); 553 ARMV7_EVENT_ATTR(l1i_cache_refill, ARMV7_PERFCTR_L1_ICACHE_REFILL); 554 ARMV7_EVENT_ATTR(l1i_tlb_refill, ARMV7_PERFCTR_ITLB_REFILL); 555 ARMV7_EVENT_ATTR(l1d_cache_refill, ARMV7_PERFCTR_L1_DCACHE_REFILL); 556 ARMV7_EVENT_ATTR(l1d_cache, ARMV7_PERFCTR_L1_DCACHE_ACCESS); 557 ARMV7_EVENT_ATTR(l1d_tlb_refill, ARMV7_PERFCTR_DTLB_REFILL); 558 ARMV7_EVENT_ATTR(ld_retired, ARMV7_PERFCTR_MEM_READ); 559 ARMV7_EVENT_ATTR(st_retired, ARMV7_PERFCTR_MEM_WRITE); 560 ARMV7_EVENT_ATTR(inst_retired, ARMV7_PERFCTR_INSTR_EXECUTED); 561 ARMV7_EVENT_ATTR(exc_taken, ARMV7_PERFCTR_EXC_TAKEN); 562 ARMV7_EVENT_ATTR(exc_return, ARMV7_PERFCTR_EXC_EXECUTED); 563 ARMV7_EVENT_ATTR(cid_write_retired, ARMV7_PERFCTR_CID_WRITE); 564 ARMV7_EVENT_ATTR(pc_write_retired, ARMV7_PERFCTR_PC_WRITE); 565 ARMV7_EVENT_ATTR(br_immed_retired, ARMV7_PERFCTR_PC_IMM_BRANCH); 566 ARMV7_EVENT_ATTR(br_return_retired, ARMV7_PERFCTR_PC_PROC_RETURN); 567 ARMV7_EVENT_ATTR(unaligned_ldst_retired, ARMV7_PERFCTR_MEM_UNALIGNED_ACCESS); 568 ARMV7_EVENT_ATTR(br_mis_pred, ARMV7_PERFCTR_PC_BRANCH_MIS_PRED); 569 ARMV7_EVENT_ATTR(cpu_cycles, ARMV7_PERFCTR_CLOCK_CYCLES); 570 ARMV7_EVENT_ATTR(br_pred, ARMV7_PERFCTR_PC_BRANCH_PRED); 571 572 static struct attribute *armv7_pmuv1_event_attrs[] = { 573 &armv7_event_attr_sw_incr.attr.attr, 574 &armv7_event_attr_l1i_cache_refill.attr.attr, 575 &armv7_event_attr_l1i_tlb_refill.attr.attr, 576 &armv7_event_attr_l1d_cache_refill.attr.attr, 577 &armv7_event_attr_l1d_cache.attr.attr, 578 &armv7_event_attr_l1d_tlb_refill.attr.attr, 579 &armv7_event_attr_ld_retired.attr.attr, 580 &armv7_event_attr_st_retired.attr.attr, 581 &armv7_event_attr_inst_retired.attr.attr, 582 &armv7_event_attr_exc_taken.attr.attr, 583 &armv7_event_attr_exc_return.attr.attr, 584 &armv7_event_attr_cid_write_retired.attr.attr, 585 &armv7_event_attr_pc_write_retired.attr.attr, 586 &armv7_event_attr_br_immed_retired.attr.attr, 587 &armv7_event_attr_br_return_retired.attr.attr, 588 &armv7_event_attr_unaligned_ldst_retired.attr.attr, 589 &armv7_event_attr_br_mis_pred.attr.attr, 590 &armv7_event_attr_cpu_cycles.attr.attr, 591 &armv7_event_attr_br_pred.attr.attr, 592 NULL, 593 }; 594 595 static struct attribute_group armv7_pmuv1_events_attr_group = { 596 .name = "events", 597 .attrs = armv7_pmuv1_event_attrs, 598 }; 599 600 ARMV7_EVENT_ATTR(mem_access, ARMV7_PERFCTR_MEM_ACCESS); 601 ARMV7_EVENT_ATTR(l1i_cache, ARMV7_PERFCTR_L1_ICACHE_ACCESS); 602 ARMV7_EVENT_ATTR(l1d_cache_wb, ARMV7_PERFCTR_L1_DCACHE_WB); 603 ARMV7_EVENT_ATTR(l2d_cache, ARMV7_PERFCTR_L2_CACHE_ACCESS); 604 ARMV7_EVENT_ATTR(l2d_cache_refill, ARMV7_PERFCTR_L2_CACHE_REFILL); 605 ARMV7_EVENT_ATTR(l2d_cache_wb, ARMV7_PERFCTR_L2_CACHE_WB); 606 ARMV7_EVENT_ATTR(bus_access, ARMV7_PERFCTR_BUS_ACCESS); 607 ARMV7_EVENT_ATTR(memory_error, ARMV7_PERFCTR_MEM_ERROR); 608 ARMV7_EVENT_ATTR(inst_spec, ARMV7_PERFCTR_INSTR_SPEC); 609 ARMV7_EVENT_ATTR(ttbr_write_retired, ARMV7_PERFCTR_TTBR_WRITE); 610 ARMV7_EVENT_ATTR(bus_cycles, ARMV7_PERFCTR_BUS_CYCLES); 611 612 static struct attribute *armv7_pmuv2_event_attrs[] = { 613 &armv7_event_attr_sw_incr.attr.attr, 614 &armv7_event_attr_l1i_cache_refill.attr.attr, 615 &armv7_event_attr_l1i_tlb_refill.attr.attr, 616 &armv7_event_attr_l1d_cache_refill.attr.attr, 617 &armv7_event_attr_l1d_cache.attr.attr, 618 &armv7_event_attr_l1d_tlb_refill.attr.attr, 619 &armv7_event_attr_ld_retired.attr.attr, 620 &armv7_event_attr_st_retired.attr.attr, 621 &armv7_event_attr_inst_retired.attr.attr, 622 &armv7_event_attr_exc_taken.attr.attr, 623 &armv7_event_attr_exc_return.attr.attr, 624 &armv7_event_attr_cid_write_retired.attr.attr, 625 &armv7_event_attr_pc_write_retired.attr.attr, 626 &armv7_event_attr_br_immed_retired.attr.attr, 627 &armv7_event_attr_br_return_retired.attr.attr, 628 &armv7_event_attr_unaligned_ldst_retired.attr.attr, 629 &armv7_event_attr_br_mis_pred.attr.attr, 630 &armv7_event_attr_cpu_cycles.attr.attr, 631 &armv7_event_attr_br_pred.attr.attr, 632 &armv7_event_attr_mem_access.attr.attr, 633 &armv7_event_attr_l1i_cache.attr.attr, 634 &armv7_event_attr_l1d_cache_wb.attr.attr, 635 &armv7_event_attr_l2d_cache.attr.attr, 636 &armv7_event_attr_l2d_cache_refill.attr.attr, 637 &armv7_event_attr_l2d_cache_wb.attr.attr, 638 &armv7_event_attr_bus_access.attr.attr, 639 &armv7_event_attr_memory_error.attr.attr, 640 &armv7_event_attr_inst_spec.attr.attr, 641 &armv7_event_attr_ttbr_write_retired.attr.attr, 642 &armv7_event_attr_bus_cycles.attr.attr, 643 NULL, 644 }; 645 646 static struct attribute_group armv7_pmuv2_events_attr_group = { 647 .name = "events", 648 .attrs = armv7_pmuv2_event_attrs, 649 }; 650 651 /* 652 * Perf Events' indices 653 */ 654 #define ARMV7_IDX_CYCLE_COUNTER 0 655 #define ARMV7_IDX_COUNTER0 1 656 #define ARMV7_IDX_COUNTER_LAST(cpu_pmu) \ 657 (ARMV7_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1) 658 659 #define ARMV7_MAX_COUNTERS 32 660 #define ARMV7_COUNTER_MASK (ARMV7_MAX_COUNTERS - 1) 661 662 /* 663 * ARMv7 low level PMNC access 664 */ 665 666 /* 667 * Perf Event to low level counters mapping 668 */ 669 #define ARMV7_IDX_TO_COUNTER(x) \ 670 (((x) - ARMV7_IDX_COUNTER0) & ARMV7_COUNTER_MASK) 671 672 /* 673 * Per-CPU PMNC: config reg 674 */ 675 #define ARMV7_PMNC_E (1 << 0) /* Enable all counters */ 676 #define ARMV7_PMNC_P (1 << 1) /* Reset all counters */ 677 #define ARMV7_PMNC_C (1 << 2) /* Cycle counter reset */ 678 #define ARMV7_PMNC_D (1 << 3) /* CCNT counts every 64th cpu cycle */ 679 #define ARMV7_PMNC_X (1 << 4) /* Export to ETM */ 680 #define ARMV7_PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug*/ 681 #define ARMV7_PMNC_N_SHIFT 11 /* Number of counters supported */ 682 #define ARMV7_PMNC_N_MASK 0x1f 683 #define ARMV7_PMNC_MASK 0x3f /* Mask for writable bits */ 684 685 /* 686 * FLAG: counters overflow flag status reg 687 */ 688 #define ARMV7_FLAG_MASK 0xffffffff /* Mask for writable bits */ 689 #define ARMV7_OVERFLOWED_MASK ARMV7_FLAG_MASK 690 691 /* 692 * PMXEVTYPER: Event selection reg 693 */ 694 #define ARMV7_EVTYPE_MASK 0xc80000ff /* Mask for writable bits */ 695 #define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */ 696 697 /* 698 * Event filters for PMUv2 699 */ 700 #define ARMV7_EXCLUDE_PL1 BIT(31) 701 #define ARMV7_EXCLUDE_USER BIT(30) 702 #define ARMV7_INCLUDE_HYP BIT(27) 703 704 /* 705 * Secure debug enable reg 706 */ 707 #define ARMV7_SDER_SUNIDEN BIT(1) /* Permit non-invasive debug */ 708 709 static inline u32 armv7_pmnc_read(void) 710 { 711 u32 val; 712 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(val)); 713 return val; 714 } 715 716 static inline void armv7_pmnc_write(u32 val) 717 { 718 val &= ARMV7_PMNC_MASK; 719 isb(); 720 asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r"(val)); 721 } 722 723 static inline int armv7_pmnc_has_overflowed(u32 pmnc) 724 { 725 return pmnc & ARMV7_OVERFLOWED_MASK; 726 } 727 728 static inline int armv7_pmnc_counter_valid(struct arm_pmu *cpu_pmu, int idx) 729 { 730 return idx >= ARMV7_IDX_CYCLE_COUNTER && 731 idx <= ARMV7_IDX_COUNTER_LAST(cpu_pmu); 732 } 733 734 static inline int armv7_pmnc_counter_has_overflowed(u32 pmnc, int idx) 735 { 736 return pmnc & BIT(ARMV7_IDX_TO_COUNTER(idx)); 737 } 738 739 static inline void armv7_pmnc_select_counter(int idx) 740 { 741 u32 counter = ARMV7_IDX_TO_COUNTER(idx); 742 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r" (counter)); 743 isb(); 744 } 745 746 static inline u64 armv7pmu_read_counter(struct perf_event *event) 747 { 748 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 749 struct hw_perf_event *hwc = &event->hw; 750 int idx = hwc->idx; 751 u32 value = 0; 752 753 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) { 754 pr_err("CPU%u reading wrong counter %d\n", 755 smp_processor_id(), idx); 756 } else if (idx == ARMV7_IDX_CYCLE_COUNTER) { 757 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (value)); 758 } else { 759 armv7_pmnc_select_counter(idx); 760 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (value)); 761 } 762 763 return value; 764 } 765 766 static inline void armv7pmu_write_counter(struct perf_event *event, u64 value) 767 { 768 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 769 struct hw_perf_event *hwc = &event->hw; 770 int idx = hwc->idx; 771 772 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) { 773 pr_err("CPU%u writing wrong counter %d\n", 774 smp_processor_id(), idx); 775 } else if (idx == ARMV7_IDX_CYCLE_COUNTER) { 776 asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" ((u32)value)); 777 } else { 778 armv7_pmnc_select_counter(idx); 779 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" ((u32)value)); 780 } 781 } 782 783 static inline void armv7_pmnc_write_evtsel(int idx, u32 val) 784 { 785 armv7_pmnc_select_counter(idx); 786 val &= ARMV7_EVTYPE_MASK; 787 asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (val)); 788 } 789 790 static inline void armv7_pmnc_enable_counter(int idx) 791 { 792 u32 counter = ARMV7_IDX_TO_COUNTER(idx); 793 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r" (BIT(counter))); 794 } 795 796 static inline void armv7_pmnc_disable_counter(int idx) 797 { 798 u32 counter = ARMV7_IDX_TO_COUNTER(idx); 799 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r" (BIT(counter))); 800 } 801 802 static inline void armv7_pmnc_enable_intens(int idx) 803 { 804 u32 counter = ARMV7_IDX_TO_COUNTER(idx); 805 asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r" (BIT(counter))); 806 } 807 808 static inline void armv7_pmnc_disable_intens(int idx) 809 { 810 u32 counter = ARMV7_IDX_TO_COUNTER(idx); 811 asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r" (BIT(counter))); 812 isb(); 813 /* Clear the overflow flag in case an interrupt is pending. */ 814 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (BIT(counter))); 815 isb(); 816 } 817 818 static inline u32 armv7_pmnc_getreset_flags(void) 819 { 820 u32 val; 821 822 /* Read */ 823 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val)); 824 825 /* Write to clear flags */ 826 val &= ARMV7_FLAG_MASK; 827 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (val)); 828 829 return val; 830 } 831 832 #ifdef DEBUG 833 static void armv7_pmnc_dump_regs(struct arm_pmu *cpu_pmu) 834 { 835 u32 val; 836 unsigned int cnt; 837 838 pr_info("PMNC registers dump:\n"); 839 840 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val)); 841 pr_info("PMNC =0x%08x\n", val); 842 843 asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r" (val)); 844 pr_info("CNTENS=0x%08x\n", val); 845 846 asm volatile("mrc p15, 0, %0, c9, c14, 1" : "=r" (val)); 847 pr_info("INTENS=0x%08x\n", val); 848 849 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val)); 850 pr_info("FLAGS =0x%08x\n", val); 851 852 asm volatile("mrc p15, 0, %0, c9, c12, 5" : "=r" (val)); 853 pr_info("SELECT=0x%08x\n", val); 854 855 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val)); 856 pr_info("CCNT =0x%08x\n", val); 857 858 for (cnt = ARMV7_IDX_COUNTER0; 859 cnt <= ARMV7_IDX_COUNTER_LAST(cpu_pmu); cnt++) { 860 armv7_pmnc_select_counter(cnt); 861 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val)); 862 pr_info("CNT[%d] count =0x%08x\n", 863 ARMV7_IDX_TO_COUNTER(cnt), val); 864 asm volatile("mrc p15, 0, %0, c9, c13, 1" : "=r" (val)); 865 pr_info("CNT[%d] evtsel=0x%08x\n", 866 ARMV7_IDX_TO_COUNTER(cnt), val); 867 } 868 } 869 #endif 870 871 static void armv7pmu_enable_event(struct perf_event *event) 872 { 873 unsigned long flags; 874 struct hw_perf_event *hwc = &event->hw; 875 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 876 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 877 int idx = hwc->idx; 878 879 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) { 880 pr_err("CPU%u enabling wrong PMNC counter IRQ enable %d\n", 881 smp_processor_id(), idx); 882 return; 883 } 884 885 /* 886 * Enable counter and interrupt, and set the counter to count 887 * the event that we're interested in. 888 */ 889 raw_spin_lock_irqsave(&events->pmu_lock, flags); 890 891 /* 892 * Disable counter 893 */ 894 armv7_pmnc_disable_counter(idx); 895 896 /* 897 * Set event (if destined for PMNx counters) 898 * We only need to set the event for the cycle counter if we 899 * have the ability to perform event filtering. 900 */ 901 if (cpu_pmu->set_event_filter || idx != ARMV7_IDX_CYCLE_COUNTER) 902 armv7_pmnc_write_evtsel(idx, hwc->config_base); 903 904 /* 905 * Enable interrupt for this counter 906 */ 907 armv7_pmnc_enable_intens(idx); 908 909 /* 910 * Enable counter 911 */ 912 armv7_pmnc_enable_counter(idx); 913 914 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 915 } 916 917 static void armv7pmu_disable_event(struct perf_event *event) 918 { 919 unsigned long flags; 920 struct hw_perf_event *hwc = &event->hw; 921 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 922 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 923 int idx = hwc->idx; 924 925 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) { 926 pr_err("CPU%u disabling wrong PMNC counter IRQ enable %d\n", 927 smp_processor_id(), idx); 928 return; 929 } 930 931 /* 932 * Disable counter and interrupt 933 */ 934 raw_spin_lock_irqsave(&events->pmu_lock, flags); 935 936 /* 937 * Disable counter 938 */ 939 armv7_pmnc_disable_counter(idx); 940 941 /* 942 * Disable interrupt for this counter 943 */ 944 armv7_pmnc_disable_intens(idx); 945 946 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 947 } 948 949 static irqreturn_t armv7pmu_handle_irq(struct arm_pmu *cpu_pmu) 950 { 951 u32 pmnc; 952 struct perf_sample_data data; 953 struct pmu_hw_events *cpuc = this_cpu_ptr(cpu_pmu->hw_events); 954 struct pt_regs *regs; 955 int idx; 956 957 /* 958 * Get and reset the IRQ flags 959 */ 960 pmnc = armv7_pmnc_getreset_flags(); 961 962 /* 963 * Did an overflow occur? 964 */ 965 if (!armv7_pmnc_has_overflowed(pmnc)) 966 return IRQ_NONE; 967 968 /* 969 * Handle the counter(s) overflow(s) 970 */ 971 regs = get_irq_regs(); 972 973 for (idx = 0; idx < cpu_pmu->num_events; ++idx) { 974 struct perf_event *event = cpuc->events[idx]; 975 struct hw_perf_event *hwc; 976 977 /* Ignore if we don't have an event. */ 978 if (!event) 979 continue; 980 981 /* 982 * We have a single interrupt for all counters. Check that 983 * each counter has overflowed before we process it. 984 */ 985 if (!armv7_pmnc_counter_has_overflowed(pmnc, idx)) 986 continue; 987 988 hwc = &event->hw; 989 armpmu_event_update(event); 990 perf_sample_data_init(&data, 0, hwc->last_period); 991 if (!armpmu_event_set_period(event)) 992 continue; 993 994 if (perf_event_overflow(event, &data, regs)) 995 cpu_pmu->disable(event); 996 } 997 998 /* 999 * Handle the pending perf events. 1000 * 1001 * Note: this call *must* be run with interrupts disabled. For 1002 * platforms that can have the PMU interrupts raised as an NMI, this 1003 * will not work. 1004 */ 1005 irq_work_run(); 1006 1007 return IRQ_HANDLED; 1008 } 1009 1010 static void armv7pmu_start(struct arm_pmu *cpu_pmu) 1011 { 1012 unsigned long flags; 1013 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 1014 1015 raw_spin_lock_irqsave(&events->pmu_lock, flags); 1016 /* Enable all counters */ 1017 armv7_pmnc_write(armv7_pmnc_read() | ARMV7_PMNC_E); 1018 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 1019 } 1020 1021 static void armv7pmu_stop(struct arm_pmu *cpu_pmu) 1022 { 1023 unsigned long flags; 1024 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 1025 1026 raw_spin_lock_irqsave(&events->pmu_lock, flags); 1027 /* Disable all counters */ 1028 armv7_pmnc_write(armv7_pmnc_read() & ~ARMV7_PMNC_E); 1029 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 1030 } 1031 1032 static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc, 1033 struct perf_event *event) 1034 { 1035 int idx; 1036 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1037 struct hw_perf_event *hwc = &event->hw; 1038 unsigned long evtype = hwc->config_base & ARMV7_EVTYPE_EVENT; 1039 1040 /* Always place a cycle counter into the cycle counter. */ 1041 if (evtype == ARMV7_PERFCTR_CPU_CYCLES) { 1042 if (test_and_set_bit(ARMV7_IDX_CYCLE_COUNTER, cpuc->used_mask)) 1043 return -EAGAIN; 1044 1045 return ARMV7_IDX_CYCLE_COUNTER; 1046 } 1047 1048 /* 1049 * For anything other than a cycle counter, try and use 1050 * the events counters 1051 */ 1052 for (idx = ARMV7_IDX_COUNTER0; idx < cpu_pmu->num_events; ++idx) { 1053 if (!test_and_set_bit(idx, cpuc->used_mask)) 1054 return idx; 1055 } 1056 1057 /* The counters are all in use. */ 1058 return -EAGAIN; 1059 } 1060 1061 static void armv7pmu_clear_event_idx(struct pmu_hw_events *cpuc, 1062 struct perf_event *event) 1063 { 1064 clear_bit(event->hw.idx, cpuc->used_mask); 1065 } 1066 1067 /* 1068 * Add an event filter to a given event. This will only work for PMUv2 PMUs. 1069 */ 1070 static int armv7pmu_set_event_filter(struct hw_perf_event *event, 1071 struct perf_event_attr *attr) 1072 { 1073 unsigned long config_base = 0; 1074 1075 if (attr->exclude_idle) 1076 return -EPERM; 1077 if (attr->exclude_user) 1078 config_base |= ARMV7_EXCLUDE_USER; 1079 if (attr->exclude_kernel) 1080 config_base |= ARMV7_EXCLUDE_PL1; 1081 if (!attr->exclude_hv) 1082 config_base |= ARMV7_INCLUDE_HYP; 1083 1084 /* 1085 * Install the filter into config_base as this is used to 1086 * construct the event type. 1087 */ 1088 event->config_base = config_base; 1089 1090 return 0; 1091 } 1092 1093 static void armv7pmu_reset(void *info) 1094 { 1095 struct arm_pmu *cpu_pmu = (struct arm_pmu *)info; 1096 u32 idx, nb_cnt = cpu_pmu->num_events, val; 1097 1098 if (cpu_pmu->secure_access) { 1099 asm volatile("mrc p15, 0, %0, c1, c1, 1" : "=r" (val)); 1100 val |= ARMV7_SDER_SUNIDEN; 1101 asm volatile("mcr p15, 0, %0, c1, c1, 1" : : "r" (val)); 1102 } 1103 1104 /* The counter and interrupt enable registers are unknown at reset. */ 1105 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) { 1106 armv7_pmnc_disable_counter(idx); 1107 armv7_pmnc_disable_intens(idx); 1108 } 1109 1110 /* Initialize & Reset PMNC: C and P bits */ 1111 armv7_pmnc_write(ARMV7_PMNC_P | ARMV7_PMNC_C); 1112 } 1113 1114 static int armv7_a8_map_event(struct perf_event *event) 1115 { 1116 return armpmu_map_event(event, &armv7_a8_perf_map, 1117 &armv7_a8_perf_cache_map, 0xFF); 1118 } 1119 1120 static int armv7_a9_map_event(struct perf_event *event) 1121 { 1122 return armpmu_map_event(event, &armv7_a9_perf_map, 1123 &armv7_a9_perf_cache_map, 0xFF); 1124 } 1125 1126 static int armv7_a5_map_event(struct perf_event *event) 1127 { 1128 return armpmu_map_event(event, &armv7_a5_perf_map, 1129 &armv7_a5_perf_cache_map, 0xFF); 1130 } 1131 1132 static int armv7_a15_map_event(struct perf_event *event) 1133 { 1134 return armpmu_map_event(event, &armv7_a15_perf_map, 1135 &armv7_a15_perf_cache_map, 0xFF); 1136 } 1137 1138 static int armv7_a7_map_event(struct perf_event *event) 1139 { 1140 return armpmu_map_event(event, &armv7_a7_perf_map, 1141 &armv7_a7_perf_cache_map, 0xFF); 1142 } 1143 1144 static int armv7_a12_map_event(struct perf_event *event) 1145 { 1146 return armpmu_map_event(event, &armv7_a12_perf_map, 1147 &armv7_a12_perf_cache_map, 0xFF); 1148 } 1149 1150 static int krait_map_event(struct perf_event *event) 1151 { 1152 return armpmu_map_event(event, &krait_perf_map, 1153 &krait_perf_cache_map, 0xFFFFF); 1154 } 1155 1156 static int krait_map_event_no_branch(struct perf_event *event) 1157 { 1158 return armpmu_map_event(event, &krait_perf_map_no_branch, 1159 &krait_perf_cache_map, 0xFFFFF); 1160 } 1161 1162 static int scorpion_map_event(struct perf_event *event) 1163 { 1164 return armpmu_map_event(event, &scorpion_perf_map, 1165 &scorpion_perf_cache_map, 0xFFFFF); 1166 } 1167 1168 static void armv7pmu_init(struct arm_pmu *cpu_pmu) 1169 { 1170 cpu_pmu->handle_irq = armv7pmu_handle_irq; 1171 cpu_pmu->enable = armv7pmu_enable_event; 1172 cpu_pmu->disable = armv7pmu_disable_event; 1173 cpu_pmu->read_counter = armv7pmu_read_counter; 1174 cpu_pmu->write_counter = armv7pmu_write_counter; 1175 cpu_pmu->get_event_idx = armv7pmu_get_event_idx; 1176 cpu_pmu->clear_event_idx = armv7pmu_clear_event_idx; 1177 cpu_pmu->start = armv7pmu_start; 1178 cpu_pmu->stop = armv7pmu_stop; 1179 cpu_pmu->reset = armv7pmu_reset; 1180 }; 1181 1182 static void armv7_read_num_pmnc_events(void *info) 1183 { 1184 int *nb_cnt = info; 1185 1186 /* Read the nb of CNTx counters supported from PMNC */ 1187 *nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK; 1188 1189 /* Add the CPU cycles counter */ 1190 *nb_cnt += 1; 1191 } 1192 1193 static int armv7_probe_num_events(struct arm_pmu *arm_pmu) 1194 { 1195 return smp_call_function_any(&arm_pmu->supported_cpus, 1196 armv7_read_num_pmnc_events, 1197 &arm_pmu->num_events, 1); 1198 } 1199 1200 static int armv7_a8_pmu_init(struct arm_pmu *cpu_pmu) 1201 { 1202 armv7pmu_init(cpu_pmu); 1203 cpu_pmu->name = "armv7_cortex_a8"; 1204 cpu_pmu->map_event = armv7_a8_map_event; 1205 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1206 &armv7_pmuv1_events_attr_group; 1207 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1208 &armv7_pmu_format_attr_group; 1209 return armv7_probe_num_events(cpu_pmu); 1210 } 1211 1212 static int armv7_a9_pmu_init(struct arm_pmu *cpu_pmu) 1213 { 1214 armv7pmu_init(cpu_pmu); 1215 cpu_pmu->name = "armv7_cortex_a9"; 1216 cpu_pmu->map_event = armv7_a9_map_event; 1217 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1218 &armv7_pmuv1_events_attr_group; 1219 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1220 &armv7_pmu_format_attr_group; 1221 return armv7_probe_num_events(cpu_pmu); 1222 } 1223 1224 static int armv7_a5_pmu_init(struct arm_pmu *cpu_pmu) 1225 { 1226 armv7pmu_init(cpu_pmu); 1227 cpu_pmu->name = "armv7_cortex_a5"; 1228 cpu_pmu->map_event = armv7_a5_map_event; 1229 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1230 &armv7_pmuv1_events_attr_group; 1231 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1232 &armv7_pmu_format_attr_group; 1233 return armv7_probe_num_events(cpu_pmu); 1234 } 1235 1236 static int armv7_a15_pmu_init(struct arm_pmu *cpu_pmu) 1237 { 1238 armv7pmu_init(cpu_pmu); 1239 cpu_pmu->name = "armv7_cortex_a15"; 1240 cpu_pmu->map_event = armv7_a15_map_event; 1241 cpu_pmu->set_event_filter = armv7pmu_set_event_filter; 1242 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1243 &armv7_pmuv2_events_attr_group; 1244 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1245 &armv7_pmu_format_attr_group; 1246 return armv7_probe_num_events(cpu_pmu); 1247 } 1248 1249 static int armv7_a7_pmu_init(struct arm_pmu *cpu_pmu) 1250 { 1251 armv7pmu_init(cpu_pmu); 1252 cpu_pmu->name = "armv7_cortex_a7"; 1253 cpu_pmu->map_event = armv7_a7_map_event; 1254 cpu_pmu->set_event_filter = armv7pmu_set_event_filter; 1255 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1256 &armv7_pmuv2_events_attr_group; 1257 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1258 &armv7_pmu_format_attr_group; 1259 return armv7_probe_num_events(cpu_pmu); 1260 } 1261 1262 static int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu) 1263 { 1264 armv7pmu_init(cpu_pmu); 1265 cpu_pmu->name = "armv7_cortex_a12"; 1266 cpu_pmu->map_event = armv7_a12_map_event; 1267 cpu_pmu->set_event_filter = armv7pmu_set_event_filter; 1268 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1269 &armv7_pmuv2_events_attr_group; 1270 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1271 &armv7_pmu_format_attr_group; 1272 return armv7_probe_num_events(cpu_pmu); 1273 } 1274 1275 static int armv7_a17_pmu_init(struct arm_pmu *cpu_pmu) 1276 { 1277 int ret = armv7_a12_pmu_init(cpu_pmu); 1278 cpu_pmu->name = "armv7_cortex_a17"; 1279 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = 1280 &armv7_pmuv2_events_attr_group; 1281 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] = 1282 &armv7_pmu_format_attr_group; 1283 return ret; 1284 } 1285 1286 /* 1287 * Krait Performance Monitor Region Event Selection Register (PMRESRn) 1288 * 1289 * 31 30 24 16 8 0 1290 * +--------------------------------+ 1291 * PMRESR0 | EN | CC | CC | CC | CC | N = 1, R = 0 1292 * +--------------------------------+ 1293 * PMRESR1 | EN | CC | CC | CC | CC | N = 1, R = 1 1294 * +--------------------------------+ 1295 * PMRESR2 | EN | CC | CC | CC | CC | N = 1, R = 2 1296 * +--------------------------------+ 1297 * VPMRESR0 | EN | CC | CC | CC | CC | N = 2, R = ? 1298 * +--------------------------------+ 1299 * EN | G=3 | G=2 | G=1 | G=0 1300 * 1301 * Event Encoding: 1302 * 1303 * hwc->config_base = 0xNRCCG 1304 * 1305 * N = prefix, 1 for Krait CPU (PMRESRn), 2 for Venum VFP (VPMRESR) 1306 * R = region register 1307 * CC = class of events the group G is choosing from 1308 * G = group or particular event 1309 * 1310 * Example: 0x12021 is a Krait CPU event in PMRESR2's group 1 with code 2 1311 * 1312 * A region (R) corresponds to a piece of the CPU (execution unit, instruction 1313 * unit, etc.) while the event code (CC) corresponds to a particular class of 1314 * events (interrupts for example). An event code is broken down into 1315 * groups (G) that can be mapped into the PMU (irq, fiqs, and irq+fiqs for 1316 * example). 1317 */ 1318 1319 #define KRAIT_EVENT (1 << 16) 1320 #define VENUM_EVENT (2 << 16) 1321 #define KRAIT_EVENT_MASK (KRAIT_EVENT | VENUM_EVENT) 1322 #define PMRESRn_EN BIT(31) 1323 1324 #define EVENT_REGION(event) (((event) >> 12) & 0xf) /* R */ 1325 #define EVENT_GROUP(event) ((event) & 0xf) /* G */ 1326 #define EVENT_CODE(event) (((event) >> 4) & 0xff) /* CC */ 1327 #define EVENT_VENUM(event) (!!(event & VENUM_EVENT)) /* N=2 */ 1328 #define EVENT_CPU(event) (!!(event & KRAIT_EVENT)) /* N=1 */ 1329 1330 static u32 krait_read_pmresrn(int n) 1331 { 1332 u32 val; 1333 1334 switch (n) { 1335 case 0: 1336 asm volatile("mrc p15, 1, %0, c9, c15, 0" : "=r" (val)); 1337 break; 1338 case 1: 1339 asm volatile("mrc p15, 1, %0, c9, c15, 1" : "=r" (val)); 1340 break; 1341 case 2: 1342 asm volatile("mrc p15, 1, %0, c9, c15, 2" : "=r" (val)); 1343 break; 1344 default: 1345 BUG(); /* Should be validated in krait_pmu_get_event_idx() */ 1346 } 1347 1348 return val; 1349 } 1350 1351 static void krait_write_pmresrn(int n, u32 val) 1352 { 1353 switch (n) { 1354 case 0: 1355 asm volatile("mcr p15, 1, %0, c9, c15, 0" : : "r" (val)); 1356 break; 1357 case 1: 1358 asm volatile("mcr p15, 1, %0, c9, c15, 1" : : "r" (val)); 1359 break; 1360 case 2: 1361 asm volatile("mcr p15, 1, %0, c9, c15, 2" : : "r" (val)); 1362 break; 1363 default: 1364 BUG(); /* Should be validated in krait_pmu_get_event_idx() */ 1365 } 1366 } 1367 1368 static u32 venum_read_pmresr(void) 1369 { 1370 u32 val; 1371 asm volatile("mrc p10, 7, %0, c11, c0, 0" : "=r" (val)); 1372 return val; 1373 } 1374 1375 static void venum_write_pmresr(u32 val) 1376 { 1377 asm volatile("mcr p10, 7, %0, c11, c0, 0" : : "r" (val)); 1378 } 1379 1380 static void venum_pre_pmresr(u32 *venum_orig_val, u32 *fp_orig_val) 1381 { 1382 u32 venum_new_val; 1383 u32 fp_new_val; 1384 1385 BUG_ON(preemptible()); 1386 /* CPACR Enable CP10 and CP11 access */ 1387 *venum_orig_val = get_copro_access(); 1388 venum_new_val = *venum_orig_val | CPACC_SVC(10) | CPACC_SVC(11); 1389 set_copro_access(venum_new_val); 1390 1391 /* Enable FPEXC */ 1392 *fp_orig_val = fmrx(FPEXC); 1393 fp_new_val = *fp_orig_val | FPEXC_EN; 1394 fmxr(FPEXC, fp_new_val); 1395 } 1396 1397 static void venum_post_pmresr(u32 venum_orig_val, u32 fp_orig_val) 1398 { 1399 BUG_ON(preemptible()); 1400 /* Restore FPEXC */ 1401 fmxr(FPEXC, fp_orig_val); 1402 isb(); 1403 /* Restore CPACR */ 1404 set_copro_access(venum_orig_val); 1405 } 1406 1407 static u32 krait_get_pmresrn_event(unsigned int region) 1408 { 1409 static const u32 pmresrn_table[] = { KRAIT_PMRESR0_GROUP0, 1410 KRAIT_PMRESR1_GROUP0, 1411 KRAIT_PMRESR2_GROUP0 }; 1412 return pmresrn_table[region]; 1413 } 1414 1415 static void krait_evt_setup(int idx, u32 config_base) 1416 { 1417 u32 val; 1418 u32 mask; 1419 u32 vval, fval; 1420 unsigned int region = EVENT_REGION(config_base); 1421 unsigned int group = EVENT_GROUP(config_base); 1422 unsigned int code = EVENT_CODE(config_base); 1423 unsigned int group_shift; 1424 bool venum_event = EVENT_VENUM(config_base); 1425 1426 group_shift = group * 8; 1427 mask = 0xff << group_shift; 1428 1429 /* Configure evtsel for the region and group */ 1430 if (venum_event) 1431 val = KRAIT_VPMRESR0_GROUP0; 1432 else 1433 val = krait_get_pmresrn_event(region); 1434 val += group; 1435 /* Mix in mode-exclusion bits */ 1436 val |= config_base & (ARMV7_EXCLUDE_USER | ARMV7_EXCLUDE_PL1); 1437 armv7_pmnc_write_evtsel(idx, val); 1438 1439 if (venum_event) { 1440 venum_pre_pmresr(&vval, &fval); 1441 val = venum_read_pmresr(); 1442 val &= ~mask; 1443 val |= code << group_shift; 1444 val |= PMRESRn_EN; 1445 venum_write_pmresr(val); 1446 venum_post_pmresr(vval, fval); 1447 } else { 1448 val = krait_read_pmresrn(region); 1449 val &= ~mask; 1450 val |= code << group_shift; 1451 val |= PMRESRn_EN; 1452 krait_write_pmresrn(region, val); 1453 } 1454 } 1455 1456 static u32 clear_pmresrn_group(u32 val, int group) 1457 { 1458 u32 mask; 1459 int group_shift; 1460 1461 group_shift = group * 8; 1462 mask = 0xff << group_shift; 1463 val &= ~mask; 1464 1465 /* Don't clear enable bit if entire region isn't disabled */ 1466 if (val & ~PMRESRn_EN) 1467 return val |= PMRESRn_EN; 1468 1469 return 0; 1470 } 1471 1472 static void krait_clearpmu(u32 config_base) 1473 { 1474 u32 val; 1475 u32 vval, fval; 1476 unsigned int region = EVENT_REGION(config_base); 1477 unsigned int group = EVENT_GROUP(config_base); 1478 bool venum_event = EVENT_VENUM(config_base); 1479 1480 if (venum_event) { 1481 venum_pre_pmresr(&vval, &fval); 1482 val = venum_read_pmresr(); 1483 val = clear_pmresrn_group(val, group); 1484 venum_write_pmresr(val); 1485 venum_post_pmresr(vval, fval); 1486 } else { 1487 val = krait_read_pmresrn(region); 1488 val = clear_pmresrn_group(val, group); 1489 krait_write_pmresrn(region, val); 1490 } 1491 } 1492 1493 static void krait_pmu_disable_event(struct perf_event *event) 1494 { 1495 unsigned long flags; 1496 struct hw_perf_event *hwc = &event->hw; 1497 int idx = hwc->idx; 1498 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1499 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 1500 1501 /* Disable counter and interrupt */ 1502 raw_spin_lock_irqsave(&events->pmu_lock, flags); 1503 1504 /* Disable counter */ 1505 armv7_pmnc_disable_counter(idx); 1506 1507 /* 1508 * Clear pmresr code (if destined for PMNx counters) 1509 */ 1510 if (hwc->config_base & KRAIT_EVENT_MASK) 1511 krait_clearpmu(hwc->config_base); 1512 1513 /* Disable interrupt for this counter */ 1514 armv7_pmnc_disable_intens(idx); 1515 1516 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 1517 } 1518 1519 static void krait_pmu_enable_event(struct perf_event *event) 1520 { 1521 unsigned long flags; 1522 struct hw_perf_event *hwc = &event->hw; 1523 int idx = hwc->idx; 1524 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1525 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 1526 1527 /* 1528 * Enable counter and interrupt, and set the counter to count 1529 * the event that we're interested in. 1530 */ 1531 raw_spin_lock_irqsave(&events->pmu_lock, flags); 1532 1533 /* Disable counter */ 1534 armv7_pmnc_disable_counter(idx); 1535 1536 /* 1537 * Set event (if destined for PMNx counters) 1538 * We set the event for the cycle counter because we 1539 * have the ability to perform event filtering. 1540 */ 1541 if (hwc->config_base & KRAIT_EVENT_MASK) 1542 krait_evt_setup(idx, hwc->config_base); 1543 else 1544 armv7_pmnc_write_evtsel(idx, hwc->config_base); 1545 1546 /* Enable interrupt for this counter */ 1547 armv7_pmnc_enable_intens(idx); 1548 1549 /* Enable counter */ 1550 armv7_pmnc_enable_counter(idx); 1551 1552 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 1553 } 1554 1555 static void krait_pmu_reset(void *info) 1556 { 1557 u32 vval, fval; 1558 struct arm_pmu *cpu_pmu = info; 1559 u32 idx, nb_cnt = cpu_pmu->num_events; 1560 1561 armv7pmu_reset(info); 1562 1563 /* Clear all pmresrs */ 1564 krait_write_pmresrn(0, 0); 1565 krait_write_pmresrn(1, 0); 1566 krait_write_pmresrn(2, 0); 1567 1568 venum_pre_pmresr(&vval, &fval); 1569 venum_write_pmresr(0); 1570 venum_post_pmresr(vval, fval); 1571 1572 /* Reset PMxEVNCTCR to sane default */ 1573 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) { 1574 armv7_pmnc_select_counter(idx); 1575 asm volatile("mcr p15, 0, %0, c9, c15, 0" : : "r" (0)); 1576 } 1577 1578 } 1579 1580 static int krait_event_to_bit(struct perf_event *event, unsigned int region, 1581 unsigned int group) 1582 { 1583 int bit; 1584 struct hw_perf_event *hwc = &event->hw; 1585 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1586 1587 if (hwc->config_base & VENUM_EVENT) 1588 bit = KRAIT_VPMRESR0_GROUP0; 1589 else 1590 bit = krait_get_pmresrn_event(region); 1591 bit -= krait_get_pmresrn_event(0); 1592 bit += group; 1593 /* 1594 * Lower bits are reserved for use by the counters (see 1595 * armv7pmu_get_event_idx() for more info) 1596 */ 1597 bit += ARMV7_IDX_COUNTER_LAST(cpu_pmu) + 1; 1598 1599 return bit; 1600 } 1601 1602 /* 1603 * We check for column exclusion constraints here. 1604 * Two events cant use the same group within a pmresr register. 1605 */ 1606 static int krait_pmu_get_event_idx(struct pmu_hw_events *cpuc, 1607 struct perf_event *event) 1608 { 1609 int idx; 1610 int bit = -1; 1611 struct hw_perf_event *hwc = &event->hw; 1612 unsigned int region = EVENT_REGION(hwc->config_base); 1613 unsigned int code = EVENT_CODE(hwc->config_base); 1614 unsigned int group = EVENT_GROUP(hwc->config_base); 1615 bool venum_event = EVENT_VENUM(hwc->config_base); 1616 bool krait_event = EVENT_CPU(hwc->config_base); 1617 1618 if (venum_event || krait_event) { 1619 /* Ignore invalid events */ 1620 if (group > 3 || region > 2) 1621 return -EINVAL; 1622 if (venum_event && (code & 0xe0)) 1623 return -EINVAL; 1624 1625 bit = krait_event_to_bit(event, region, group); 1626 if (test_and_set_bit(bit, cpuc->used_mask)) 1627 return -EAGAIN; 1628 } 1629 1630 idx = armv7pmu_get_event_idx(cpuc, event); 1631 if (idx < 0 && bit >= 0) 1632 clear_bit(bit, cpuc->used_mask); 1633 1634 return idx; 1635 } 1636 1637 static void krait_pmu_clear_event_idx(struct pmu_hw_events *cpuc, 1638 struct perf_event *event) 1639 { 1640 int bit; 1641 struct hw_perf_event *hwc = &event->hw; 1642 unsigned int region = EVENT_REGION(hwc->config_base); 1643 unsigned int group = EVENT_GROUP(hwc->config_base); 1644 bool venum_event = EVENT_VENUM(hwc->config_base); 1645 bool krait_event = EVENT_CPU(hwc->config_base); 1646 1647 armv7pmu_clear_event_idx(cpuc, event); 1648 if (venum_event || krait_event) { 1649 bit = krait_event_to_bit(event, region, group); 1650 clear_bit(bit, cpuc->used_mask); 1651 } 1652 } 1653 1654 static int krait_pmu_init(struct arm_pmu *cpu_pmu) 1655 { 1656 armv7pmu_init(cpu_pmu); 1657 cpu_pmu->name = "armv7_krait"; 1658 /* Some early versions of Krait don't support PC write events */ 1659 if (of_property_read_bool(cpu_pmu->plat_device->dev.of_node, 1660 "qcom,no-pc-write")) 1661 cpu_pmu->map_event = krait_map_event_no_branch; 1662 else 1663 cpu_pmu->map_event = krait_map_event; 1664 cpu_pmu->set_event_filter = armv7pmu_set_event_filter; 1665 cpu_pmu->reset = krait_pmu_reset; 1666 cpu_pmu->enable = krait_pmu_enable_event; 1667 cpu_pmu->disable = krait_pmu_disable_event; 1668 cpu_pmu->get_event_idx = krait_pmu_get_event_idx; 1669 cpu_pmu->clear_event_idx = krait_pmu_clear_event_idx; 1670 return armv7_probe_num_events(cpu_pmu); 1671 } 1672 1673 /* 1674 * Scorpion Local Performance Monitor Register (LPMn) 1675 * 1676 * 31 30 24 16 8 0 1677 * +--------------------------------+ 1678 * LPM0 | EN | CC | CC | CC | CC | N = 1, R = 0 1679 * +--------------------------------+ 1680 * LPM1 | EN | CC | CC | CC | CC | N = 1, R = 1 1681 * +--------------------------------+ 1682 * LPM2 | EN | CC | CC | CC | CC | N = 1, R = 2 1683 * +--------------------------------+ 1684 * L2LPM | EN | CC | CC | CC | CC | N = 1, R = 3 1685 * +--------------------------------+ 1686 * VLPM | EN | CC | CC | CC | CC | N = 2, R = ? 1687 * +--------------------------------+ 1688 * EN | G=3 | G=2 | G=1 | G=0 1689 * 1690 * 1691 * Event Encoding: 1692 * 1693 * hwc->config_base = 0xNRCCG 1694 * 1695 * N = prefix, 1 for Scorpion CPU (LPMn/L2LPM), 2 for Venum VFP (VLPM) 1696 * R = region register 1697 * CC = class of events the group G is choosing from 1698 * G = group or particular event 1699 * 1700 * Example: 0x12021 is a Scorpion CPU event in LPM2's group 1 with code 2 1701 * 1702 * A region (R) corresponds to a piece of the CPU (execution unit, instruction 1703 * unit, etc.) while the event code (CC) corresponds to a particular class of 1704 * events (interrupts for example). An event code is broken down into 1705 * groups (G) that can be mapped into the PMU (irq, fiqs, and irq+fiqs for 1706 * example). 1707 */ 1708 1709 static u32 scorpion_read_pmresrn(int n) 1710 { 1711 u32 val; 1712 1713 switch (n) { 1714 case 0: 1715 asm volatile("mrc p15, 0, %0, c15, c0, 0" : "=r" (val)); 1716 break; 1717 case 1: 1718 asm volatile("mrc p15, 1, %0, c15, c0, 0" : "=r" (val)); 1719 break; 1720 case 2: 1721 asm volatile("mrc p15, 2, %0, c15, c0, 0" : "=r" (val)); 1722 break; 1723 case 3: 1724 asm volatile("mrc p15, 3, %0, c15, c2, 0" : "=r" (val)); 1725 break; 1726 default: 1727 BUG(); /* Should be validated in scorpion_pmu_get_event_idx() */ 1728 } 1729 1730 return val; 1731 } 1732 1733 static void scorpion_write_pmresrn(int n, u32 val) 1734 { 1735 switch (n) { 1736 case 0: 1737 asm volatile("mcr p15, 0, %0, c15, c0, 0" : : "r" (val)); 1738 break; 1739 case 1: 1740 asm volatile("mcr p15, 1, %0, c15, c0, 0" : : "r" (val)); 1741 break; 1742 case 2: 1743 asm volatile("mcr p15, 2, %0, c15, c0, 0" : : "r" (val)); 1744 break; 1745 case 3: 1746 asm volatile("mcr p15, 3, %0, c15, c2, 0" : : "r" (val)); 1747 break; 1748 default: 1749 BUG(); /* Should be validated in scorpion_pmu_get_event_idx() */ 1750 } 1751 } 1752 1753 static u32 scorpion_get_pmresrn_event(unsigned int region) 1754 { 1755 static const u32 pmresrn_table[] = { SCORPION_LPM0_GROUP0, 1756 SCORPION_LPM1_GROUP0, 1757 SCORPION_LPM2_GROUP0, 1758 SCORPION_L2LPM_GROUP0 }; 1759 return pmresrn_table[region]; 1760 } 1761 1762 static void scorpion_evt_setup(int idx, u32 config_base) 1763 { 1764 u32 val; 1765 u32 mask; 1766 u32 vval, fval; 1767 unsigned int region = EVENT_REGION(config_base); 1768 unsigned int group = EVENT_GROUP(config_base); 1769 unsigned int code = EVENT_CODE(config_base); 1770 unsigned int group_shift; 1771 bool venum_event = EVENT_VENUM(config_base); 1772 1773 group_shift = group * 8; 1774 mask = 0xff << group_shift; 1775 1776 /* Configure evtsel for the region and group */ 1777 if (venum_event) 1778 val = SCORPION_VLPM_GROUP0; 1779 else 1780 val = scorpion_get_pmresrn_event(region); 1781 val += group; 1782 /* Mix in mode-exclusion bits */ 1783 val |= config_base & (ARMV7_EXCLUDE_USER | ARMV7_EXCLUDE_PL1); 1784 armv7_pmnc_write_evtsel(idx, val); 1785 1786 asm volatile("mcr p15, 0, %0, c9, c15, 0" : : "r" (0)); 1787 1788 if (venum_event) { 1789 venum_pre_pmresr(&vval, &fval); 1790 val = venum_read_pmresr(); 1791 val &= ~mask; 1792 val |= code << group_shift; 1793 val |= PMRESRn_EN; 1794 venum_write_pmresr(val); 1795 venum_post_pmresr(vval, fval); 1796 } else { 1797 val = scorpion_read_pmresrn(region); 1798 val &= ~mask; 1799 val |= code << group_shift; 1800 val |= PMRESRn_EN; 1801 scorpion_write_pmresrn(region, val); 1802 } 1803 } 1804 1805 static void scorpion_clearpmu(u32 config_base) 1806 { 1807 u32 val; 1808 u32 vval, fval; 1809 unsigned int region = EVENT_REGION(config_base); 1810 unsigned int group = EVENT_GROUP(config_base); 1811 bool venum_event = EVENT_VENUM(config_base); 1812 1813 if (venum_event) { 1814 venum_pre_pmresr(&vval, &fval); 1815 val = venum_read_pmresr(); 1816 val = clear_pmresrn_group(val, group); 1817 venum_write_pmresr(val); 1818 venum_post_pmresr(vval, fval); 1819 } else { 1820 val = scorpion_read_pmresrn(region); 1821 val = clear_pmresrn_group(val, group); 1822 scorpion_write_pmresrn(region, val); 1823 } 1824 } 1825 1826 static void scorpion_pmu_disable_event(struct perf_event *event) 1827 { 1828 unsigned long flags; 1829 struct hw_perf_event *hwc = &event->hw; 1830 int idx = hwc->idx; 1831 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1832 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 1833 1834 /* Disable counter and interrupt */ 1835 raw_spin_lock_irqsave(&events->pmu_lock, flags); 1836 1837 /* Disable counter */ 1838 armv7_pmnc_disable_counter(idx); 1839 1840 /* 1841 * Clear pmresr code (if destined for PMNx counters) 1842 */ 1843 if (hwc->config_base & KRAIT_EVENT_MASK) 1844 scorpion_clearpmu(hwc->config_base); 1845 1846 /* Disable interrupt for this counter */ 1847 armv7_pmnc_disable_intens(idx); 1848 1849 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 1850 } 1851 1852 static void scorpion_pmu_enable_event(struct perf_event *event) 1853 { 1854 unsigned long flags; 1855 struct hw_perf_event *hwc = &event->hw; 1856 int idx = hwc->idx; 1857 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1858 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events); 1859 1860 /* 1861 * Enable counter and interrupt, and set the counter to count 1862 * the event that we're interested in. 1863 */ 1864 raw_spin_lock_irqsave(&events->pmu_lock, flags); 1865 1866 /* Disable counter */ 1867 armv7_pmnc_disable_counter(idx); 1868 1869 /* 1870 * Set event (if destined for PMNx counters) 1871 * We don't set the event for the cycle counter because we 1872 * don't have the ability to perform event filtering. 1873 */ 1874 if (hwc->config_base & KRAIT_EVENT_MASK) 1875 scorpion_evt_setup(idx, hwc->config_base); 1876 else if (idx != ARMV7_IDX_CYCLE_COUNTER) 1877 armv7_pmnc_write_evtsel(idx, hwc->config_base); 1878 1879 /* Enable interrupt for this counter */ 1880 armv7_pmnc_enable_intens(idx); 1881 1882 /* Enable counter */ 1883 armv7_pmnc_enable_counter(idx); 1884 1885 raw_spin_unlock_irqrestore(&events->pmu_lock, flags); 1886 } 1887 1888 static void scorpion_pmu_reset(void *info) 1889 { 1890 u32 vval, fval; 1891 struct arm_pmu *cpu_pmu = info; 1892 u32 idx, nb_cnt = cpu_pmu->num_events; 1893 1894 armv7pmu_reset(info); 1895 1896 /* Clear all pmresrs */ 1897 scorpion_write_pmresrn(0, 0); 1898 scorpion_write_pmresrn(1, 0); 1899 scorpion_write_pmresrn(2, 0); 1900 scorpion_write_pmresrn(3, 0); 1901 1902 venum_pre_pmresr(&vval, &fval); 1903 venum_write_pmresr(0); 1904 venum_post_pmresr(vval, fval); 1905 1906 /* Reset PMxEVNCTCR to sane default */ 1907 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) { 1908 armv7_pmnc_select_counter(idx); 1909 asm volatile("mcr p15, 0, %0, c9, c15, 0" : : "r" (0)); 1910 } 1911 } 1912 1913 static int scorpion_event_to_bit(struct perf_event *event, unsigned int region, 1914 unsigned int group) 1915 { 1916 int bit; 1917 struct hw_perf_event *hwc = &event->hw; 1918 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu); 1919 1920 if (hwc->config_base & VENUM_EVENT) 1921 bit = SCORPION_VLPM_GROUP0; 1922 else 1923 bit = scorpion_get_pmresrn_event(region); 1924 bit -= scorpion_get_pmresrn_event(0); 1925 bit += group; 1926 /* 1927 * Lower bits are reserved for use by the counters (see 1928 * armv7pmu_get_event_idx() for more info) 1929 */ 1930 bit += ARMV7_IDX_COUNTER_LAST(cpu_pmu) + 1; 1931 1932 return bit; 1933 } 1934 1935 /* 1936 * We check for column exclusion constraints here. 1937 * Two events cant use the same group within a pmresr register. 1938 */ 1939 static int scorpion_pmu_get_event_idx(struct pmu_hw_events *cpuc, 1940 struct perf_event *event) 1941 { 1942 int idx; 1943 int bit = -1; 1944 struct hw_perf_event *hwc = &event->hw; 1945 unsigned int region = EVENT_REGION(hwc->config_base); 1946 unsigned int group = EVENT_GROUP(hwc->config_base); 1947 bool venum_event = EVENT_VENUM(hwc->config_base); 1948 bool scorpion_event = EVENT_CPU(hwc->config_base); 1949 1950 if (venum_event || scorpion_event) { 1951 /* Ignore invalid events */ 1952 if (group > 3 || region > 3) 1953 return -EINVAL; 1954 1955 bit = scorpion_event_to_bit(event, region, group); 1956 if (test_and_set_bit(bit, cpuc->used_mask)) 1957 return -EAGAIN; 1958 } 1959 1960 idx = armv7pmu_get_event_idx(cpuc, event); 1961 if (idx < 0 && bit >= 0) 1962 clear_bit(bit, cpuc->used_mask); 1963 1964 return idx; 1965 } 1966 1967 static void scorpion_pmu_clear_event_idx(struct pmu_hw_events *cpuc, 1968 struct perf_event *event) 1969 { 1970 int bit; 1971 struct hw_perf_event *hwc = &event->hw; 1972 unsigned int region = EVENT_REGION(hwc->config_base); 1973 unsigned int group = EVENT_GROUP(hwc->config_base); 1974 bool venum_event = EVENT_VENUM(hwc->config_base); 1975 bool scorpion_event = EVENT_CPU(hwc->config_base); 1976 1977 armv7pmu_clear_event_idx(cpuc, event); 1978 if (venum_event || scorpion_event) { 1979 bit = scorpion_event_to_bit(event, region, group); 1980 clear_bit(bit, cpuc->used_mask); 1981 } 1982 } 1983 1984 static int scorpion_pmu_init(struct arm_pmu *cpu_pmu) 1985 { 1986 armv7pmu_init(cpu_pmu); 1987 cpu_pmu->name = "armv7_scorpion"; 1988 cpu_pmu->map_event = scorpion_map_event; 1989 cpu_pmu->reset = scorpion_pmu_reset; 1990 cpu_pmu->enable = scorpion_pmu_enable_event; 1991 cpu_pmu->disable = scorpion_pmu_disable_event; 1992 cpu_pmu->get_event_idx = scorpion_pmu_get_event_idx; 1993 cpu_pmu->clear_event_idx = scorpion_pmu_clear_event_idx; 1994 return armv7_probe_num_events(cpu_pmu); 1995 } 1996 1997 static int scorpion_mp_pmu_init(struct arm_pmu *cpu_pmu) 1998 { 1999 armv7pmu_init(cpu_pmu); 2000 cpu_pmu->name = "armv7_scorpion_mp"; 2001 cpu_pmu->map_event = scorpion_map_event; 2002 cpu_pmu->reset = scorpion_pmu_reset; 2003 cpu_pmu->enable = scorpion_pmu_enable_event; 2004 cpu_pmu->disable = scorpion_pmu_disable_event; 2005 cpu_pmu->get_event_idx = scorpion_pmu_get_event_idx; 2006 cpu_pmu->clear_event_idx = scorpion_pmu_clear_event_idx; 2007 return armv7_probe_num_events(cpu_pmu); 2008 } 2009 2010 static const struct of_device_id armv7_pmu_of_device_ids[] = { 2011 {.compatible = "arm,cortex-a17-pmu", .data = armv7_a17_pmu_init}, 2012 {.compatible = "arm,cortex-a15-pmu", .data = armv7_a15_pmu_init}, 2013 {.compatible = "arm,cortex-a12-pmu", .data = armv7_a12_pmu_init}, 2014 {.compatible = "arm,cortex-a9-pmu", .data = armv7_a9_pmu_init}, 2015 {.compatible = "arm,cortex-a8-pmu", .data = armv7_a8_pmu_init}, 2016 {.compatible = "arm,cortex-a7-pmu", .data = armv7_a7_pmu_init}, 2017 {.compatible = "arm,cortex-a5-pmu", .data = armv7_a5_pmu_init}, 2018 {.compatible = "qcom,krait-pmu", .data = krait_pmu_init}, 2019 {.compatible = "qcom,scorpion-pmu", .data = scorpion_pmu_init}, 2020 {.compatible = "qcom,scorpion-mp-pmu", .data = scorpion_mp_pmu_init}, 2021 {}, 2022 }; 2023 2024 static const struct pmu_probe_info armv7_pmu_probe_table[] = { 2025 ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A8, armv7_a8_pmu_init), 2026 ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A9, armv7_a9_pmu_init), 2027 { /* sentinel value */ } 2028 }; 2029 2030 2031 static int armv7_pmu_device_probe(struct platform_device *pdev) 2032 { 2033 return arm_pmu_device_probe(pdev, armv7_pmu_of_device_ids, 2034 armv7_pmu_probe_table); 2035 } 2036 2037 static struct platform_driver armv7_pmu_driver = { 2038 .driver = { 2039 .name = "armv7-pmu", 2040 .of_match_table = armv7_pmu_of_device_ids, 2041 .suppress_bind_attrs = true, 2042 }, 2043 .probe = armv7_pmu_device_probe, 2044 }; 2045 2046 builtin_platform_driver(armv7_pmu_driver); 2047 #endif /* CONFIG_CPU_V7 */ 2048