ump_internal.h

/*
 * Copyright (C) 2010-2012 ARM Limited. All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file ump_internal.c
 *
 * Internal definitions and debugging macros for the UMP implementation.
 */

#ifndef _UNIFIED_MEMORY_PROVIDER_INTERNAL_H_
#define _UNIFIED_MEMORY_PROVIDER_INTERNAL_H_

#include <ump/ump.h>
#include <ump/ump_osu.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef enum ump_cache_enabled
{
	UMP_CACHE_DISABLE = 0,
	UMP_CACHE_ENABLE  = 1
} ump_cache_enabled;

/**
 * The actual (hidden) definition of ump_handles.
 */
typedef struct ump_mem
{
	ump_secure_id secure_id;       /**< UMP device driver cookie */
	void * mapped_mem;             /**< Mapped memory; all read and write use this */
	unsigned long size;            /**< Size of allocated memory */
	_ump_osu_lock_t* ref_lock;    /**< Lock protection ref_count */
	int ref_count;                 /**< The reference count of the ump_handle in userspace. It is used for finding out
	                                    when to free the memory used by this userspace handle. It is NOT the same as the
	                                    real ump_mem reference count in the devicedriver which do reference counting
	                                    for the memory that this handle reveals. */
	unsigned long cookie;          /**< cookie for use in arch_unmap calls */
	ump_cache_enabled is_cached;
} ump_mem;

#ifdef __cplusplus
}
#endif



#endif /* _UNIFIED_MEMORY_PROVIDER_INTERNAL_H_ */