1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2014, STMicroelectronics International N.V. 4 * Copyright (c) 2017-2020, Linaro Limited 5 * Copyright (c) 2020, Arm Limited 6 */ 7 8 #ifndef __KERNEL_TS_MANAGER_H 9 #define __KERNEL_TS_MANAGER_H 10 11 #include <sys/queue.h> 12 #include <tee_api_types.h> 13 14 struct ts_ctx { 15 TEE_UUID uuid; 16 const struct ts_ops *ops; 17 }; 18 19 struct ts_session { 20 TAILQ_ENTRY(ts_session) link_tsd; 21 struct ts_ctx *ctx; /* Generic TS context */ 22 #if defined(CFG_TA_GPROF_SUPPORT) 23 struct sample_buf *sbuf; /* Profiling data (PC sampling) */ 24 #endif 25 #if defined(CFG_FTRACE_SUPPORT) 26 struct ftrace_buf *fbuf; /* ftrace buffer */ 27 #endif 28 /* 29 * Used by PTAs to store session specific information, or used by ldelf 30 * syscalls to store handlers of opened TA/SP binaries. 31 */ 32 void *user_ctx; 33 }; 34 35 enum ts_gprof_status { 36 TS_GPROF_SUSPEND, 37 TS_GPROF_RESUME, 38 }; 39 40 struct thread_svc_regs; 41 struct ts_ops { 42 TEE_Result (*enter_open_session)(struct ts_session *s); 43 TEE_Result (*enter_invoke_cmd)(struct ts_session *s, uint32_t cmd); 44 void (*enter_close_session)(struct ts_session *s); 45 void (*dump_state)(struct ts_ctx *ctx); 46 void (*dump_ftrace)(struct ts_ctx *ctx); 47 void (*destroy)(struct ts_ctx *ctx); 48 uint32_t (*get_instance_id)(struct ts_ctx *ctx); 49 bool (*handle_svc)(struct thread_svc_regs *regs); 50 #ifdef CFG_TA_GPROF_SUPPORT 51 void (*gprof_set_status)(enum ts_gprof_status status); 52 #endif 53 }; 54 55 struct ts_session *ts_get_current_session(void); 56 struct ts_session *ts_get_current_session_may_fail(void); 57 58 void ts_push_current_session(struct ts_session *sess); 59 struct ts_session *ts_pop_current_session(void); 60 struct ts_session *ts_get_calling_session(void); 61 62 #endif /*__KERNEL_TS_MANAGER_H*/ 63