1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2016-2021, Linaro Limited 4 */ 5 6 #ifndef __OPTEE_RPC_CMD_H 7 #define __OPTEE_RPC_CMD_H 8 9 /* 10 * All RPC is done with a struct optee_msg_arg as bearer of information, 11 * struct optee_msg_arg::arg holds values defined by OPTEE_RPC_CMD_* below. 12 * Only the commands handled by the kernel driver are defined here. 13 * 14 * RPC communication with tee-supplicant is reversed compared to normal 15 * client communication described above. The supplicant receives requests 16 * and sends responses. 17 */ 18 19 /* 20 * Get time 21 * 22 * Returns number of seconds and nano seconds since the Epoch, 23 * 1970-01-01 00:00:00 +0000 (UTC). 24 * 25 * [out] value[0].a Number of seconds 26 * [out] value[0].b Number of nano seconds. 27 */ 28 #define OPTEE_RPC_CMD_GET_TIME 3 29 30 /* 31 * Wait queue primitive, helper for secure world to implement a wait queue. 32 * 33 * If secure world needs to wait for a secure world mutex it issues a sleep 34 * request instead of spinning in secure world. Conversely is a wakeup 35 * request issued when a secure world mutex with a thread waiting thread is 36 * unlocked. 37 * 38 * Waiting on a key 39 * [in] value[0].a OPTEE_RPC_WAIT_QUEUE_SLEEP 40 * [in] value[0].b Wait key 41 * 42 * Waking up a key 43 * [in] value[0].a OPTEE_RPC_WAIT_QUEUE_WAKEUP 44 * [in] value[0].b Wakeup key 45 */ 46 #define OPTEE_RPC_CMD_WAIT_QUEUE 4 47 #define OPTEE_RPC_WAIT_QUEUE_SLEEP 0 48 #define OPTEE_RPC_WAIT_QUEUE_WAKEUP 1 49 50 /* 51 * Suspend execution 52 * 53 * [in] value[0].a Number of milliseconds to suspend 54 */ 55 #define OPTEE_RPC_CMD_SUSPEND 5 56 57 /* 58 * Allocate a piece of shared memory 59 * 60 * [in] value[0].a Type of memory one of 61 * OPTEE_RPC_SHM_TYPE_* below 62 * [in] value[0].b Requested size 63 * [in] value[0].c Required alignment 64 * [out] memref[0] Buffer 65 */ 66 #define OPTEE_RPC_CMD_SHM_ALLOC 6 67 /* Memory that can be shared with a non-secure user space application */ 68 #define OPTEE_RPC_SHM_TYPE_APPL 0 69 /* Memory only shared with non-secure kernel */ 70 #define OPTEE_RPC_SHM_TYPE_KERNEL 1 71 72 /* 73 * Free shared memory previously allocated with OPTEE_RPC_CMD_SHM_ALLOC 74 * 75 * [in] value[0].a Type of memory one of 76 * OPTEE_RPC_SHM_TYPE_* above 77 * [in] value[0].b Value of shared memory reference or cookie 78 */ 79 #define OPTEE_RPC_CMD_SHM_FREE 7 80 81 /* 82 * Issue master requests (read and write operations) to an I2C chip. 83 * 84 * [in] value[0].a Transfer mode (OPTEE_RPC_I2C_TRANSFER_*) 85 * [in] value[0].b The I2C bus (a.k.a adapter). 86 * 16 bit field. 87 * [in] value[0].c The I2C chip (a.k.a address). 88 * 16 bit field (either 7 or 10 bit effective). 89 * [in] value[1].a The I2C master control flags (ie, 10 bit address). 90 * 16 bit field. 91 * [in/out] memref[2] Buffer used for data transfers. 92 * [out] value[3].a Number of bytes transferred by the REE. 93 */ 94 #define OPTEE_RPC_CMD_I2C_TRANSFER 21 95 96 /* I2C master transfer modes */ 97 #define OPTEE_RPC_I2C_TRANSFER_RD 0 98 #define OPTEE_RPC_I2C_TRANSFER_WR 1 99 100 /* I2C master control flags */ 101 #define OPTEE_RPC_I2C_FLAGS_TEN_BIT BIT(0) 102 103 #endif /*__OPTEE_RPC_CMD_H*/ 104