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