1 /* 2 * Copyright (C) 2022 Huawei Technologies Co., Ltd. 3 * Licensed under the Mulan PSL v2. 4 * You can use this software according to the terms and conditions of the Mulan PSL v2. 5 * You may obtain a copy of Mulan PSL v2 at: 6 * http://license.coscl.org.cn/MulanPSL2 7 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR 8 * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR 9 * PURPOSE. 10 * See the Mulan PSL v2 for more details. 11 */ 12 13 #ifndef LIBDRV_DRV_H 14 #define LIBDRV_DRV_H 15 16 #include <ipclib.h> 17 #include "tee_msg_type.h" 18 #define MAX_ARGS 16 19 20 #ifndef SYSCALL_DATA_MAX 21 #define SYSCALL_DATA_MAX 512 22 #define SYSCAL_MSG_BUFFER_SIZE 2048 23 #endif 24 25 struct drv_req_msg_t { 26 msg_header header; 27 uint64_t args[MAX_ARGS]; 28 cref_t job_handler; 29 char data[]; 30 } __attribute__((__packed__)); 31 32 struct drv_reply_msg_t { 33 msg_header header; 34 uint64_t __rsvd; 35 char rdata[]; 36 } __attribute__((__packed__)); 37 38 struct drv_call_params { 39 uint64_t *args; 40 uint32_t *lens; 41 int32_t nr; 42 void *rdata; 43 uint32_t rdata_len; 44 }; 45 46 int32_t drv_init(const char *path); 47 48 int64_t drv_call_new(const char *name, uint16_t id, uint64_t *args, uint32_t *lens, int32_t nr); 49 50 #endif /* LIBDRV_DRV_H */ 51