1 /* 2 * Copyright (C) 2012 ARM Ltd. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #ifndef __ASM_PERF_EVENT_H 18 #define __ASM_PERF_EVENT_H 19 20 #include <asm/stack_pointer.h> 21 #include <asm/ptrace.h> 22 23 #define ARMV8_PMU_MAX_COUNTERS 32 24 #define ARMV8_PMU_COUNTER_MASK (ARMV8_PMU_MAX_COUNTERS - 1) 25 26 /* 27 * Per-CPU PMCR: config reg 28 */ 29 #define ARMV8_PMU_PMCR_E (1 << 0) /* Enable all counters */ 30 #define ARMV8_PMU_PMCR_P (1 << 1) /* Reset all counters */ 31 #define ARMV8_PMU_PMCR_C (1 << 2) /* Cycle counter reset */ 32 #define ARMV8_PMU_PMCR_D (1 << 3) /* CCNT counts every 64th cpu cycle */ 33 #define ARMV8_PMU_PMCR_X (1 << 4) /* Export to ETM */ 34 #define ARMV8_PMU_PMCR_DP (1 << 5) /* Disable CCNT if non-invasive debug*/ 35 #define ARMV8_PMU_PMCR_LC (1 << 6) /* Overflow on 64 bit cycle counter */ 36 #define ARMV8_PMU_PMCR_N_SHIFT 11 /* Number of counters supported */ 37 #define ARMV8_PMU_PMCR_N_MASK 0x1f 38 #define ARMV8_PMU_PMCR_MASK 0x7f /* Mask for writable bits */ 39 40 /* 41 * PMOVSR: counters overflow flag status reg 42 */ 43 #define ARMV8_PMU_OVSR_MASK 0xffffffff /* Mask for writable bits */ 44 #define ARMV8_PMU_OVERFLOWED_MASK ARMV8_PMU_OVSR_MASK 45 46 /* 47 * PMXEVTYPER: Event selection reg 48 */ 49 #define ARMV8_PMU_EVTYPE_MASK 0xc800ffff /* Mask for writable bits */ 50 #define ARMV8_PMU_EVTYPE_EVENT 0xffff /* Mask for EVENT bits */ 51 52 /* 53 * PMUv3 event types: required events 54 */ 55 #define ARMV8_PMUV3_PERFCTR_SW_INCR 0x00 56 #define ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL 0x03 57 #define ARMV8_PMUV3_PERFCTR_L1D_CACHE 0x04 58 #define ARMV8_PMUV3_PERFCTR_BR_MIS_PRED 0x10 59 #define ARMV8_PMUV3_PERFCTR_CPU_CYCLES 0x11 60 #define ARMV8_PMUV3_PERFCTR_BR_PRED 0x12 61 62 /* 63 * Event filters for PMUv3 64 */ 65 #define ARMV8_PMU_EXCLUDE_EL1 (1 << 31) 66 #define ARMV8_PMU_EXCLUDE_EL0 (1 << 30) 67 #define ARMV8_PMU_INCLUDE_EL2 (1 << 27) 68 69 /* 70 * PMUSERENR: user enable reg 71 */ 72 #define ARMV8_PMU_USERENR_MASK 0xf /* Mask for writable bits */ 73 #define ARMV8_PMU_USERENR_EN (1 << 0) /* PMU regs can be accessed at EL0 */ 74 #define ARMV8_PMU_USERENR_SW (1 << 1) /* PMSWINC can be written at EL0 */ 75 #define ARMV8_PMU_USERENR_CR (1 << 2) /* Cycle counter can be read at EL0 */ 76 #define ARMV8_PMU_USERENR_ER (1 << 3) /* Event counter can be read at EL0 */ 77 78 #ifdef CONFIG_PERF_EVENTS 79 struct pt_regs; 80 extern unsigned long perf_instruction_pointer(struct pt_regs *regs); 81 extern unsigned long perf_misc_flags(struct pt_regs *regs); 82 #define perf_misc_flags(regs) perf_misc_flags(regs) 83 #define perf_arch_bpf_user_pt_regs(regs) ®s->user_regs 84 #endif 85 86 #define perf_arch_fetch_caller_regs(regs, __ip) { \ 87 (regs)->pc = (__ip); \ 88 (regs)->regs[29] = (unsigned long) __builtin_frame_address(0); \ 89 (regs)->sp = current_stack_pointer; \ 90 (regs)->pstate = PSR_MODE_EL1h; \ 91 } 92 93 #endif 94
