1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright(C) 2015 Linaro Limited. All rights reserved. 4 * Author: Mathieu Poirier <mathieu.poirier@linaro.org> 5 */ 6 7 #ifndef _CORESIGHT_ETM_PERF_H 8 #define _CORESIGHT_ETM_PERF_H 9 10 #include <linux/percpu-defs.h> 11 #include "coresight-priv.h" 12 13 struct coresight_device; 14 struct cscfg_config_desc; 15 16 /* 17 * In both ETMv3 and v4 the maximum number of address comparator implentable 18 * is 8. The actual number is implementation specific and will be checked 19 * when filters are applied. 20 */ 21 #define ETM_ADDR_CMP_MAX 8 22 23 #define ATTR_CFG_FLD_preset_CFG config 24 #define ATTR_CFG_FLD_preset_LO 0 25 #define ATTR_CFG_FLD_preset_HI 3 26 #define ATTR_CFG_FLD_timestamp_CFG config 27 #define ATTR_CFG_FLD_timestamp_LO 4 28 #define ATTR_CFG_FLD_timestamp_HI 7 29 #define ATTR_CFG_FLD_branch_broadcast_CFG config 30 #define ATTR_CFG_FLD_branch_broadcast_LO 8 31 #define ATTR_CFG_FLD_branch_broadcast_HI 8 32 #define ATTR_CFG_FLD_cycacc_CFG config 33 #define ATTR_CFG_FLD_cycacc_LO 12 34 #define ATTR_CFG_FLD_cycacc_HI 12 35 #define ATTR_CFG_FLD_contextid1_CFG config 36 #define ATTR_CFG_FLD_contextid1_LO 14 37 #define ATTR_CFG_FLD_contextid1_HI 14 38 #define ATTR_CFG_FLD_contextid2_CFG config 39 #define ATTR_CFG_FLD_contextid2_LO 15 40 #define ATTR_CFG_FLD_contextid2_HI 15 41 /* 42 * Old position of 'timestamp' and not published in sysfs. Remove at a later 43 * date if necessary. 44 */ 45 #define ATTR_CFG_FLD_deprecated_timestamp_CFG config 46 #define ATTR_CFG_FLD_deprecated_timestamp_LO 28 47 #define ATTR_CFG_FLD_deprecated_timestamp_HI 28 48 #define ATTR_CFG_FLD_retstack_CFG config 49 #define ATTR_CFG_FLD_retstack_LO 29 50 #define ATTR_CFG_FLD_retstack_HI 29 51 #define ATTR_CFG_FLD_sinkid_CFG config2 52 #define ATTR_CFG_FLD_sinkid_LO 0 53 #define ATTR_CFG_FLD_sinkid_HI 31 54 #define ATTR_CFG_FLD_configid_CFG config2 55 #define ATTR_CFG_FLD_configid_LO 32 56 #define ATTR_CFG_FLD_configid_HI 63 57 #define ATTR_CFG_FLD_cc_threshold_CFG config3 58 #define ATTR_CFG_FLD_cc_threshold_LO 0 59 #define ATTR_CFG_FLD_cc_threshold_HI 11 60 61 /** 62 * struct etm_filter - single instruction range or start/stop configuration. 63 * @start_addr: The address to start tracing on. 64 * @stop_addr: The address to stop tracing on. 65 * @type: Is this a range or start/stop filter. 66 */ 67 struct etm_filter { 68 unsigned long start_addr; 69 unsigned long stop_addr; 70 enum etm_addr_type type; 71 }; 72 73 /** 74 * struct etm_filters - set of filters for a session 75 * @etm_filter: All the filters for this session. 76 * @nr_filters: Number of filters 77 * @ssstatus: Status of the start/stop logic. 78 */ 79 struct etm_filters { 80 struct etm_filter etm_filter[ETM_ADDR_CMP_MAX]; 81 unsigned int nr_filters; 82 bool ssstatus; 83 }; 84 85 /** 86 * struct etm_event_data - Coresight specifics associated to an event 87 * @work: Handle to free allocated memory outside IRQ context. 88 * @mask: Hold the CPU(s) this event was set for. 89 * @aux_hwid_done: Whether a CPU has emitted the TraceID packet or not. 90 * @snk_config: The sink configuration. 91 * @cfg_hash: The hash id of any coresight config selected. 92 * @path: An array of path, each slot for one CPU. 93 */ 94 struct etm_event_data { 95 struct work_struct work; 96 cpumask_t mask; 97 cpumask_t aux_hwid_done; 98 void *snk_config; 99 u32 cfg_hash; 100 struct coresight_path * __percpu *path; 101 }; 102 103 int etm_perf_symlink(struct coresight_device *csdev, bool link); 104 int etm_perf_add_symlink_sink(struct coresight_device *csdev); 105 void etm_perf_del_symlink_sink(struct coresight_device *csdev); etm_perf_sink_config(struct perf_output_handle * handle)106static inline void *etm_perf_sink_config(struct perf_output_handle *handle) 107 { 108 struct etm_event_data *data = perf_get_aux(handle); 109 110 if (data) 111 return data->snk_config; 112 return NULL; 113 } 114 int etm_perf_add_symlink_cscfg(struct device *dev, 115 struct cscfg_config_desc *config_desc); 116 void etm_perf_del_symlink_cscfg(struct cscfg_config_desc *config_desc); 117 int __init etm_perf_init(void); 118 void etm_perf_exit(void); 119 120 #endif 121