1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (c) 2016, Linaro Limited 4 */ 5 6 #include <pta_gprof.h> 7 #include <string.h> 8 #include <tee_api.h> 9 #include "gprof_pta.h" 10 11 static TEE_TASessionHandle sess = TEE_HANDLE_NULL; 12 13 static TEE_Result invoke_gprof_pta(uint32_t cmd_id, uint32_t param_types, 14 TEE_Param params[TEE_NUM_PARAMS]) 15 { 16 static const TEE_UUID core_uuid = PTA_GPROF_UUID; 17 TEE_Result res; 18 19 if (!sess) { 20 res = TEE_OpenTASession(&core_uuid, 0, 0, NULL, &sess, NULL); 21 if (res != TEE_SUCCESS) 22 return res; 23 } 24 res = TEE_InvokeTACommand(sess, 0, cmd_id, param_types, params, NULL); 25 return res; 26 } 27 28 TEE_Result __pta_gprof_send(void *buf, size_t len, uint32_t *id) 29 { 30 TEE_Param params[TEE_NUM_PARAMS]; 31 uint32_t param_types; 32 TEE_Result res; 33 34 param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_VALUE_INOUT, 35 TEE_PARAM_TYPE_MEMREF_INPUT, 36 TEE_PARAM_TYPE_NONE, 37 TEE_PARAM_TYPE_NONE); 38 memset(params, 0, sizeof(params)); 39 params[0].value.a = *id; 40 params[1].memref.buffer = buf; 41 params[1].memref.size = len; 42 res = invoke_gprof_pta(PTA_GPROF_SEND, param_types, params); 43 if (res == TEE_SUCCESS) 44 *id = params[0].value.a; 45 return res; 46 } 47 48 TEE_Result __pta_gprof_pc_sampling_start(void *buf, size_t len, size_t offset, 49 size_t scale) 50 { 51 TEE_Param params[TEE_NUM_PARAMS]; 52 uint32_t param_types; 53 54 param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_MEMREF_INOUT, 55 TEE_PARAM_TYPE_VALUE_INPUT, 56 TEE_PARAM_TYPE_NONE, 57 TEE_PARAM_TYPE_NONE); 58 memset(params, 0, sizeof(params)); 59 params[0].memref.buffer = buf; 60 params[0].memref.size = len; 61 params[1].value.a = offset; 62 params[1].value.b = scale; 63 return invoke_gprof_pta(PTA_GPROF_START_PC_SAMPLING, param_types, 64 params); 65 } 66 67 TEE_Result __pta_gprof_pc_sampling_stop(uint32_t *rate) 68 { 69 TEE_Param params[TEE_NUM_PARAMS]; 70 uint32_t param_types; 71 TEE_Result res; 72 73 param_types = TEE_PARAM_TYPES(TEE_PARAM_TYPE_VALUE_OUTPUT, 74 TEE_PARAM_TYPE_NONE, 75 TEE_PARAM_TYPE_NONE, 76 TEE_PARAM_TYPE_NONE); 77 memset(params, 0, sizeof(params)); 78 res = invoke_gprof_pta(PTA_GPROF_STOP_PC_SAMPLING, param_types, 79 params); 80 if (res != TEE_SUCCESS) 81 return res; 82 if (rate) 83 *rate = params[0].value.a; 84 return res; 85 } 86 87 void __pta_gprof_fini(void) 88 { 89 if (sess) 90 TEE_CloseTASession(sess); 91 } 92