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/*

 * 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

 * on the rights to use, copy, modify, merge, publish, distribute, sub

 * license, 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 (including the next

 * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.

 *

 * Authors:

 *      Adam Rak 

 */

#ifndef COMPUTE_MEMORY_POOL

#define COMPUTE_MEMORY_POOL

#include 

#define ITEM_MAPPED_FOR_READING (1<<0)

#define ITEM_MAPPED_FOR_WRITING (1<<1)

#define ITEM_FOR_PROMOTING      (1<<2)

#define ITEM_FOR_DEMOTING       (1<<3)

#define POOL_FRAGMENTED (1<<0)

struct compute_memory_pool;

struct compute_memory_item

{

	int64_t id;		/**< ID of the memory chunk */

	uint32_t status;	/**< Will track the status of the item */

	/** Start pointer in dwords relative in the pool bo. If an item

	 * is unallocated, then this value must be -1 to indicate this. */

	int64_t start_in_dw;

	int64_t size_in_dw;	/**< Size of the chunk in dwords */

	/** Intermediate buffer asociated with an item. It is used mainly for mapping

	 * items against it. They are listed in the pool's unallocated list */

	struct r600_resource *real_buffer;

	struct compute_memory_pool* pool;

	struct list_head link;

};

struct compute_memory_pool

{

	int64_t next_id;	/**< For generating unique IDs for memory chunks */

	int64_t size_in_dw;	/**< Size of the pool in dwords */

	struct r600_resource *bo;	/**< The pool buffer object resource */

	struct r600_screen *screen;

	uint32_t *shadow;	/**< host copy of the pool, used for growing the pool */

	uint32_t status;	/**< Status of the pool */

	/** Allocated memory items in the pool, they must be ordered by "start_in_dw" */

	struct list_head *item_list;

	/** Unallocated memory items, this list contains all the items that aren't

	 * yet in the pool */

	struct list_head *unallocated_list;

};

static inline int is_item_in_pool(struct compute_memory_item *item)

{

	return item->start_in_dw != -1;

}

struct compute_memory_pool* compute_memory_pool_new(struct r600_screen *rscreen);

void compute_memory_pool_delete(struct compute_memory_pool* pool);

int64_t compute_memory_prealloc_chunk(struct compute_memory_pool* pool,

	int64_t size_in_dw);

struct list_head *compute_memory_postalloc_chunk(struct compute_memory_pool* pool,

	int64_t start_in_dw);

int compute_memory_grow_defrag_pool(struct compute_memory_pool* pool,

	struct pipe_context *pipe, int new_size_in_dw);

void compute_memory_shadow(struct compute_memory_pool* pool,

	struct pipe_context *pipe, int device_to_host);

int compute_memory_finalize_pending(struct compute_memory_pool* pool,

	struct pipe_context * pipe);

void compute_memory_defrag(struct compute_memory_pool *pool,

	struct pipe_resource *src, struct pipe_resource *dst,

	struct pipe_context *pipe);

int compute_memory_promote_item(struct compute_memory_pool *pool,

	struct compute_memory_item *item, struct pipe_context *pipe,

	int64_t allocated);

void compute_memory_demote_item(struct compute_memory_pool *pool,

	struct compute_memory_item *item, struct pipe_context *pipe);

void compute_memory_move_item(struct compute_memory_pool *pool,

	struct pipe_resource *src, struct pipe_resource *dst,

	struct compute_memory_item *item, uint64_t new_start_in_dw,

	struct pipe_context *pipe);

void compute_memory_free(struct compute_memory_pool* pool, int64_t id);

struct compute_memory_item* compute_memory_alloc(struct compute_memory_pool* pool,

	int64_t size_in_dw);

void compute_memory_transfer(struct compute_memory_pool* pool,

	struct pipe_context * pipe, int device_to_host,

	struct compute_memory_item* chunk, void* data,

	int offset_in_chunk, int size);

void compute_memory_transfer_direct(struct compute_memory_pool* pool,

	int chunk_to_data, struct compute_memory_item* chunk,

	struct r600_resource* data, int offset_in_chunk,

	int offset_in_data, int size);

#endif