/*
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* Copyright (c) 2014, STMicroelectronics International N.V.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License Version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef TEE_SUPP_COMM_H
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#define TEE_SUPP_COMM_H
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#define TEE_RPC_ICMD_ALLOCATE 0x1001
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#define TEE_RPC_ICMD_FREE 0x1002
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#define TEE_RPC_ICMD_INVOKE 0x1003
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#define TEE_RPC_NBR_BUFF 1
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#define TEE_RPC_DATA_SIZE 64
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#define TEE_RPC_BUFFER_NUMBER 5
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#define TEE_RPC_STATE_IDLE 0x00
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#define TEE_RPC_STATE_ACTIVE 0x01
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/* Keep aligned with optee_client (user space) */
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#define TEE_RPC_BUFFER 0x00000001
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#define TEE_RPC_VALUE 0x00000002
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#define TEE_RPC_LOAD_TA 0x10000001
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/*
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* Handled within the driver only
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* Keep aligned with optee_os (secure space)
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*/
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#define TEE_RPC_MUTEX_WAIT 0x20000000
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#define TEE_RPC_WAIT_QUEUE_SLEEP 0x20000001
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#define TEE_RPC_WAIT_QUEUE_WAKEUP 0x20000002
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#define TEE_RPC_WAIT 0x30000000
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/* Parameters for TEE_RPC_WAIT_MUTEX above */
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#define TEE_MUTEX_WAIT_SLEEP 0
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#define TEE_MUTEX_WAIT_WAKEUP 1
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#define TEE_MUTEX_WAIT_DELETE 2
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#include <linux/semaphore.h>
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/**
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* struct tee_rpc_bf - Contains definition of the tee com buffer
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* @state: Buffer state
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* @data: Command data
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*/
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struct tee_rpc_bf {
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uint32_t state;
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uint8_t data[TEE_RPC_DATA_SIZE];
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};
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struct tee_rpc_alloc {
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uint32_t size; /* size of block */
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void *data; /* pointer to data */
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void *shm; /* pointer to an opaque data, being shm structure */
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};
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struct tee_rpc_free {
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void *shm; /* pointer to an opaque data, being shm structure */
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};
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struct tee_rpc_cmd {
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union {
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void *buffer;
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uint64_t padding_buf;
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};
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uint32_t size;
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uint32_t type;
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int fd;
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int reserved;
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};
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struct tee_rpc_invoke {
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uint32_t cmd;
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uint32_t res;
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uint32_t nbr_bf;
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uint32_t reserved;
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struct tee_rpc_cmd cmds[TEE_RPC_BUFFER_NUMBER];
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};
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struct tee_rpc {
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struct tee_rpc_invoke commToUser;
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struct tee_rpc_invoke commFromUser;
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struct semaphore datatouser;
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struct semaphore datafromuser;
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struct mutex thrd_mutex; /* Block the thread to wait for supp answer */
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struct mutex outsync; /* Out sync mutex */
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struct mutex insync; /* In sync mutex */
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struct mutex reqsync; /* Request sync mutex */
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atomic_t used;
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};
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enum teec_rpc_result {
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TEEC_RPC_OK,
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TEEC_RPC_FAIL
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};
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struct tee;
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int tee_supp_init(struct tee *tee);
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void tee_supp_deinit(struct tee *tee);
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enum teec_rpc_result tee_supp_cmd(struct tee *tee,
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uint32_t id, void *data, size_t datalen);
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ssize_t tee_supp_read(struct file *filp, char __user *buffer,
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size_t length, loff_t *offset);
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ssize_t tee_supp_write(struct file *filp, const char __user *buffer,
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size_t length, loff_t *offset);
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#endif
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