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/**
* Copyright (c) 2011 Trusted Logic S.A.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __TF_CONN_H__
#define __TF_CONN_H__
#include "tf_defs.h"
/*
* Returns a pointer to the connection referenced by the
* specified file.
*/
static inline struct tf_connection *tf_conn_from_file(
struct file *file)
{
return file->private_data;
}
int tf_validate_shmem_and_flags(u32 shmem, u32 shmem_size, u32 flags);
int tf_map_shmem(
struct tf_connection *connection,
u32 buffer,
/* flags for read-write access rights on the memory */
u32 flags,
bool in_user_space,
u32 descriptors[TF_MAX_COARSE_PAGES],
u32 *buffer_start_offset,
u32 buffer_size,
struct tf_shmem_desc **shmem_desc,
u32 *descriptor_count);
void tf_unmap_shmem(
struct tf_connection *connection,
struct tf_shmem_desc *shmem_desc,
u32 full_cleanup);
/*----------------------------------------------------------------------------
* Connection operations to the Secure World
*----------------------------------------------------------------------------*/
int tf_create_device_context(
struct tf_connection *connection);
int tf_destroy_device_context(
struct tf_connection *connection);
int tf_open_client_session(
struct tf_connection *connection,
union tf_command *command,
union tf_answer *answer);
int tf_close_client_session(
struct tf_connection *connection,
union tf_command *command,
union tf_answer *answer);
int tf_register_shared_memory(
struct tf_connection *connection,
union tf_command *command,
union tf_answer *answer);
int tf_release_shared_memory(
struct tf_connection *connection,
union tf_command *command,
union tf_answer *answer);
int tf_invoke_client_command(
struct tf_connection *connection,
union tf_command *command,
union tf_answer *answer);
int tf_cancel_client_command(
struct tf_connection *connection,
union tf_command *command,
union tf_answer *answer);
/*----------------------------------------------------------------------------
* Connection initialization and cleanup operations
*----------------------------------------------------------------------------*/
int tf_open(struct tf_device *dev,
struct file *file,
struct tf_connection **connection);
void tf_close(
struct tf_connection *connection);
#endif /* !defined(__TF_CONN_H__) */
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