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 #include <tee_trace.h> 36 37 struct tee_ta_session; 38 39 void tee_svc_user_ta_panic_from_pager(void); 40 41 /* 42 * This function will not return itself, rather it will end with a system 43 * call to return to kernel mode. The syscall will unwinde the stack and 44 * the result will be as if this function had returned. 45 * 46 * User_func is called in user mode with stack setup and a0-a3 passed 47 * in r0-r3. 48 */ 49 TEE_Result tee_svc_enter_user_mode(uint32_t a0, uint32_t a1, uint32_t a2, 50 uint32_t a3, tee_uaddr_t sp, 51 tee_uaddr_t user_func, uint32_t *panicked, 52 uint32_t *panic_code); 53 54 void tee_svc_sys_return(uint32_t ret, uint32_t param_types, void *params); 55 56 void tee_svc_sys_log(const void *buf, size_t len); 57 58 void tee_svc_sys_panic(uint32_t code); 59 uint32_t tee_svc_sys_dummy(uint32_t *a); 60 uint32_t tee_svc_sys_dummy_7args(uint32_t a1, uint32_t a2, uint32_t a3, 61 uint32_t a4, uint32_t a5, uint32_t a6, 62 uint32_t a7); 63 64 uint32_t tee_svc_sys_nocall(void); 65 66 TEE_Result tee_svc_sys_get_property(uint32_t prop, tee_uaddr_t buf, 67 size_t blen); 68 69 TEE_Result tee_svc_open_ta_session(const TEE_UUID *dest, 70 uint32_t cancel_req_to, uint32_t param_types, 71 TEE_Param params[4], 72 TEE_TASessionHandle *sess, 73 uint32_t *ret_orig); 74 75 TEE_Result tee_svc_close_ta_session(TEE_TASessionHandle sess); 76 77 TEE_Result tee_svc_invoke_ta_command(TEE_TASessionHandle sess, 78 uint32_t cancel_req_to, uint32_t cmd_id, 79 uint32_t param_types, TEE_Param params[4], 80 uint32_t *ret_orig); 81 82 TEE_Result tee_svc_check_access_rights(uint32_t flags, const void *buf, 83 size_t len); 84 85 TEE_Result tee_svc_copy_from_user(struct tee_ta_session *sess, void *kaddr, 86 const void *uaddr, size_t len); 87 TEE_Result tee_svc_copy_to_user(struct tee_ta_session *sess, void *uaddr, 88 const void *kaddr, size_t len); 89 90 TEE_Result tee_svc_get_cancellation_flag(bool *cancel); 91 92 TEE_Result tee_svc_unmask_cancellation(bool *old_mask); 93 94 TEE_Result tee_svc_mask_cancellation(bool *old_mask); 95 96 TEE_Result tee_svc_wait(uint32_t timeout); 97 98 TEE_Result tee_svc_get_time(enum utee_time_category cat, TEE_Time *time); 99 TEE_Result tee_svc_set_ta_time(const TEE_Time *time); 100 101 #endif /* TEE_SVC_H */ 102