1 /* 2 * Copyright (c) 2014, STMicroelectronics International N.V. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #ifndef TEE_SVC_H 28 #define TEE_SVC_H 29 30 #include <stdint.h> 31 #include <kernel/tee_common_unpg.h> /* tee_uaddr_t */ 32 #include <tee_api_types.h> 33 #include <tee_api_types.h> 34 #include <utee_types.h> 35 36 struct tee_ta_session; 37 38 void tee_svc_user_ta_panic_from_pager(void); 39 40 /* 41 * This function will not return itself, rather it will end with a system 42 * call to return to kernel mode. The syscall will unwinde the stack and 43 * the result will be as if this function had returned. 44 * 45 * User_func is called in user mode with stack setup and a0-a3 passed 46 * in r0-r3. 47 */ 48 TEE_Result tee_svc_enter_user_mode(uint32_t a0, uint32_t a1, uint32_t a2, 49 uint32_t a3, tee_uaddr_t sp, 50 tee_uaddr_t user_func, uint32_t *panicked, 51 uint32_t *panic_code); 52 53 void tee_svc_sys_return(uint32_t ret, uint32_t param_types, void *params); 54 55 void tee_svc_sys_log(const void *buf, size_t len); 56 57 void tee_svc_sys_panic(uint32_t code); 58 59 TEE_Result tee_svc_reserved(void); 60 61 uint32_t tee_svc_sys_dummy(uint32_t *a); 62 uint32_t tee_svc_sys_dummy_7args(uint32_t a1, uint32_t a2, uint32_t a3, 63 uint32_t a4, uint32_t a5, uint32_t a6, 64 uint32_t a7); 65 66 uint32_t tee_svc_sys_nocall(void); 67 68 TEE_Result tee_svc_sys_get_property(uint32_t prop, tee_uaddr_t buf, 69 size_t blen); 70 71 TEE_Result tee_svc_open_ta_session(const TEE_UUID *dest, 72 uint32_t cancel_req_to, uint32_t param_types, 73 TEE_Param params[4], 74 TEE_TASessionHandle *sess, 75 uint32_t *ret_orig); 76 77 TEE_Result tee_svc_close_ta_session(TEE_TASessionHandle sess); 78 79 TEE_Result tee_svc_invoke_ta_command(TEE_TASessionHandle sess, 80 uint32_t cancel_req_to, uint32_t cmd_id, 81 uint32_t param_types, TEE_Param params[4], 82 uint32_t *ret_orig); 83 84 TEE_Result tee_svc_check_access_rights(uint32_t flags, const void *buf, 85 size_t len); 86 87 TEE_Result tee_svc_copy_from_user(struct tee_ta_session *sess, void *kaddr, 88 const void *uaddr, size_t len); 89 TEE_Result tee_svc_copy_to_user(struct tee_ta_session *sess, void *uaddr, 90 const void *kaddr, size_t len); 91 92 TEE_Result tee_svc_get_cancellation_flag(bool *cancel); 93 94 TEE_Result tee_svc_unmask_cancellation(bool *old_mask); 95 96 TEE_Result tee_svc_mask_cancellation(bool *old_mask); 97 98 TEE_Result tee_svc_wait(uint32_t timeout); 99 100 TEE_Result tee_svc_get_time(enum utee_time_category cat, TEE_Time *time); 101 TEE_Result tee_svc_set_ta_time(const TEE_Time *time); 102 103 void tee_svc_trace_syscall(int num); 104 105 106 #endif /* TEE_SVC_H */ 107