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- /* SPDX-License-Identifier: BSD-2-Clause */
- /*
- * Copyright (c) 2016-2021, Linaro Limited
- */
- #ifndef __OPTEE_RPC_CMD_H
- #define __OPTEE_RPC_CMD_H
- /*
- * All RPC is done with a struct optee_msg_arg as bearer of information,
- * struct optee_msg_arg::arg holds values defined by OPTEE_RPC_CMD_* below.
- * Only the commands handled by the kernel driver are defined here.
- *
- * RPC communication with tee-supplicant is reversed compared to normal
- * client communication described above. The supplicant receives requests
- * and sends responses.
- */
- /*
- * Get time
- *
- * Returns number of seconds and nano seconds since the Epoch,
- * 1970-01-01 00:00:00 +0000 (UTC).
- *
- * [out] value[0].a Number of seconds
- * [out] value[0].b Number of nano seconds.
- */
- #define OPTEE_RPC_CMD_GET_TIME 3
- /*
- * Notification from/to secure world.
- *
- * If secure world needs to wait for something, for instance a mutex, it
- * does a notification wait request instead of spinning in secure world.
- * Conversely can a synchronous notification can be sent when a secure
- * world mutex with a thread waiting thread is unlocked.
- *
- * This interface can also be used to wait for a asynchronous notification
- * which instead is sent via a non-secure interrupt.
- *
- * Waiting on notification
- * [in] value[0].a OPTEE_RPC_NOTIFICATION_WAIT
- * [in] value[0].b notification value
- *
- * Sending a synchronous notification
- * [in] value[0].a OPTEE_RPC_NOTIFICATION_SEND
- * [in] value[0].b notification value
- */
- #define OPTEE_RPC_CMD_NOTIFICATION 4
- #define OPTEE_RPC_NOTIFICATION_WAIT 0
- #define OPTEE_RPC_NOTIFICATION_SEND 1
- /*
- * Suspend execution
- *
- * [in] value[0].a Number of milliseconds to suspend
- */
- #define OPTEE_RPC_CMD_SUSPEND 5
- /*
- * Allocate a piece of shared memory
- *
- * [in] value[0].a Type of memory one of
- * OPTEE_RPC_SHM_TYPE_* below
- * [in] value[0].b Requested size
- * [in] value[0].c Required alignment
- * [out] memref[0] Buffer
- */
- #define OPTEE_RPC_CMD_SHM_ALLOC 6
- /* Memory that can be shared with a non-secure user space application */
- #define OPTEE_RPC_SHM_TYPE_APPL 0
- /* Memory only shared with non-secure kernel */
- #define OPTEE_RPC_SHM_TYPE_KERNEL 1
- /*
- * Free shared memory previously allocated with OPTEE_RPC_CMD_SHM_ALLOC
- *
- * [in] value[0].a Type of memory one of
- * OPTEE_RPC_SHM_TYPE_* above
- * [in] value[0].b Value of shared memory reference or cookie
- */
- #define OPTEE_RPC_CMD_SHM_FREE 7
- /*
- * Issue master requests (read and write operations) to an I2C chip.
- *
- * [in] value[0].a Transfer mode (OPTEE_RPC_I2C_TRANSFER_*)
- * [in] value[0].b The I2C bus (a.k.a adapter).
- * 16 bit field.
- * [in] value[0].c The I2C chip (a.k.a address).
- * 16 bit field (either 7 or 10 bit effective).
- * [in] value[1].a The I2C master control flags (ie, 10 bit address).
- * 16 bit field.
- * [in/out] memref[2] Buffer used for data transfers.
- * [out] value[3].a Number of bytes transferred by the REE.
- */
- #define OPTEE_RPC_CMD_I2C_TRANSFER 21
- /* I2C master transfer modes */
- #define OPTEE_RPC_I2C_TRANSFER_RD 0
- #define OPTEE_RPC_I2C_TRANSFER_WR 1
- /* I2C master control flags */
- #define OPTEE_RPC_I2C_FLAGS_TEN_BIT BIT(0)
- #endif /*__OPTEE_RPC_CMD_H*/
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