1 /* 2 * SPDX-License-Identifier: GPL-2.0 3 * 4 * Copyright(C) 2015-2018 Linaro Limited. 5 * 6 * Author: Tor Jeremiassen <tor@ti.com> 7 * Author: Mathieu Poirier <mathieu.poirier@linaro.org> 8 */ 9 10 #ifndef INCLUDE__CS_ETM_DECODER_H__ 11 #define INCLUDE__CS_ETM_DECODER_H__ 12 13 #include <linux/types.h> 14 #include <stdio.h> 15 16 struct cs_etm_decoder; 17 struct cs_etm_packet; 18 struct cs_etm_packet_queue; 19 20 struct cs_etm_queue; 21 22 typedef u32 (*cs_etm_mem_cb_type)(struct cs_etm_queue *, u8, u64, size_t, u8 *); 23 24 struct cs_etmv3_trace_params { 25 u32 reg_ctrl; 26 u32 reg_trc_id; 27 u32 reg_ccer; 28 u32 reg_idr; 29 }; 30 31 struct cs_etmv4_trace_params { 32 u32 reg_idr0; 33 u32 reg_idr1; 34 u32 reg_idr2; 35 u32 reg_idr8; 36 u32 reg_configr; 37 u32 reg_traceidr; 38 }; 39 40 struct cs_etm_trace_params { 41 int protocol; 42 union { 43 struct cs_etmv3_trace_params etmv3; 44 struct cs_etmv4_trace_params etmv4; 45 }; 46 }; 47 48 struct cs_etm_decoder_params { 49 int operation; 50 void (*packet_printer)(const char *msg); 51 cs_etm_mem_cb_type mem_acc_cb; 52 u8 formatted; 53 u8 fsyncs; 54 u8 hsyncs; 55 u8 frame_aligned; 56 void *data; 57 }; 58 59 /* 60 * The following enums are indexed starting with 1 to align with the 61 * open source coresight trace decoder library. 62 */ 63 enum { 64 CS_ETM_PROTO_ETMV3 = 1, 65 CS_ETM_PROTO_ETMV4i, 66 CS_ETM_PROTO_ETMV4d, 67 CS_ETM_PROTO_PTM, 68 }; 69 70 enum cs_etm_decoder_operation { 71 CS_ETM_OPERATION_PRINT = 1, 72 CS_ETM_OPERATION_DECODE, 73 CS_ETM_OPERATION_MAX, 74 }; 75 76 int cs_etm_decoder__process_data_block(struct cs_etm_decoder *decoder, 77 u64 indx, const u8 *buf, 78 size_t len, size_t *consumed); 79 80 struct cs_etm_decoder * 81 cs_etm_decoder__new(int num_cpu, 82 struct cs_etm_decoder_params *d_params, 83 struct cs_etm_trace_params t_params[]); 84 85 void cs_etm_decoder__free(struct cs_etm_decoder *decoder); 86 87 int cs_etm_decoder__add_mem_access_cb(struct cs_etm_decoder *decoder, 88 u64 start, u64 end, 89 cs_etm_mem_cb_type cb_func); 90 91 int cs_etm_decoder__get_packet(struct cs_etm_packet_queue *packet_queue, 92 struct cs_etm_packet *packet); 93 94 int cs_etm_decoder__reset(struct cs_etm_decoder *decoder); 95 96 #endif /* INCLUDE__CS_ETM_DECODER_H__ */ 97