trusty_dev.h
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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef TRUSTY_TRUSTY_DEV_H_
#define TRUSTY_TRUSTY_DEV_H_
#include <trusty/sysdeps.h>
/*
* Architecture specific Trusty device struct.
*
* @priv_data: system dependent data, may be unused
* @api_version: TIPC version
*/
struct trusty_dev {
void *priv_data;
uint32_t api_version;
};
/*
* Initializes @dev with @priv, and gets the API version by calling
* into Trusty. Returns negative on error.
*/
int trusty_dev_init(struct trusty_dev *dev, void *priv);
/*
* Cleans up anything related to @dev. Returns negative on error.
*/
int trusty_dev_shutdown(struct trusty_dev *dev);
/*
* Invokes creation of queueless Trusty IPC device on the secure side.
* @buf will be mapped into Trusty's address space.
*
* @dev: trusty device, initialized with trusty_dev_init
* @buf: physical address info of buffer to share with Trusty
* @buf_size: size of @buf
*/
int trusty_dev_init_ipc(struct trusty_dev *dev, struct ns_mem_page_info *buf,
uint32_t buf_size);
/*
* Invokes execution of command on the secure side.
*
* @dev: trusty device, initialized with trusty_dev_init
* @buf: physical address info of shared buffer containing command
* @buf_size: size of command data
*/
int trusty_dev_exec_ipc(struct trusty_dev *dev, struct ns_mem_page_info *buf,
uint32_t buf_size);
/*
* Invokes deletion of queueless Trusty IPC device on the secure side.
* @buf is unmapped, and all open channels are closed.
*
* @dev: trusty device, initialized with trusty_dev_init
* @buf: physical address info of shared buffer
* @buf_size: size of @buf
*/
int trusty_dev_shutdown_ipc(struct trusty_dev *dev,
struct ns_mem_page_info *buf, uint32_t buf_size);
#endif /* TRUSTY_TRUSTY_DEV_H_ */