[mirror_ubuntu-zesty-kernel.git] / include / drm / ttm / ttm_page_alloc.h

/*
 * Copyright (c) Red Hat Inc.

 * 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, 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 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.
 *
 * Authors: Dave Airlie <airlied@redhat.com>
 *          Jerome Glisse <jglisse@redhat.com>
 */
#ifndef TTM_PAGE_ALLOC
#define TTM_PAGE_ALLOC

#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_memory.h>

/**
 * Initialize pool allocator.
 */
int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
/**
 * Free pool allocator.
 */
void ttm_page_alloc_fini(void);

/**
 * ttm_pool_populate:
 *
 * @ttm: The struct ttm_tt to contain the backing pages.
 *
 * Add backing pages to all of @ttm
 */
extern int ttm_pool_populate(struct ttm_tt *ttm);

/**
 * ttm_pool_unpopulate:
 *
 * @ttm: The struct ttm_tt which to free backing pages.
 *
 * Free all pages of @ttm
 */
extern void ttm_pool_unpopulate(struct ttm_tt *ttm);

/**
 * Output the state of pools to debugfs file
 */
extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);


#ifdef CONFIG_SWIOTLB
/**
 * Initialize pool allocator.
 */
int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);

/**
 * Free pool allocator.
 */
void ttm_dma_page_alloc_fini(void);

/**
 * Output the state of pools to debugfs file
 */
extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data);

extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev);
extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev);

#else
static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob,
					  unsigned max_pages)
{
	return -ENODEV;
}

static inline void ttm_dma_page_alloc_fini(void) { return; }

static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data)
{
	return 0;
}
#endif

#endif
Commit	Line	Data
1403b1a3 PN	1	/*
	2	* Copyright (c) Red Hat Inc.
	3
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sub license,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice (including the
	12	* next paragraph) shall be included in all copies or substantial portions
	13	* of the Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	21	* DEALINGS IN THE SOFTWARE.
	22	*
	23	* Authors: Dave Airlie <airlied@redhat.com>
	24	* Jerome Glisse <jglisse@redhat.com>
	25	*/
	26	#ifndef TTM_PAGE_ALLOC
	27	#define TTM_PAGE_ALLOC
	28
a1ce3928 DH	29	#include <drm/ttm/ttm_bo_driver.h>
a1ce3928 DH	30	#include <drm/ttm/ttm_memory.h>
1403b1a3	31
1403b1a3 PN	32	/**
1403b1a3 PN	33	* Initialize pool allocator.
1403b1a3	34	*/
c96af79e	35	int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
1403b1a3 PN	36	/**
	37	* Free pool allocator.
	38	*/
	39	void ttm_page_alloc_fini(void);
	40
b1e5f172 JG	41	/**
	42	* ttm_pool_populate:
	43	*
	44	* @ttm: The struct ttm_tt to contain the backing pages.
	45	*
	46	* Add backing pages to all of @ttm
	47	*/
	48	extern int ttm_pool_populate(struct ttm_tt *ttm);
	49
	50	/**
	51	* ttm_pool_unpopulate:
	52	*
	53	* @ttm: The struct ttm_tt which to free backing pages.
	54	*
	55	* Free all pages of @ttm
	56	*/
	57	extern void ttm_pool_unpopulate(struct ttm_tt *ttm);
	58
07458661 PN	59	/**
	60	* Output the state of pools to debugfs file
	61	*/
	62	extern int ttm_page_alloc_debugfs(struct seq_file m, void data);
2334b75f KRW	63
	64
	65	#ifdef CONFIG_SWIOTLB
	66	/**
	67	* Initialize pool allocator.
	68	*/
	69	int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
	70
	71	/**
	72	* Free pool allocator.
	73	*/
	74	void ttm_dma_page_alloc_fini(void);
	75
	76	/**
	77	* Output the state of pools to debugfs file
	78	*/
	79	extern int ttm_dma_page_alloc_debugfs(struct seq_file m, void data);
	80
8e7e7052 JG	81	extern int ttm_dma_populate(struct ttm_dma_tt ttm_dma, struct device dev);
8e7e7052 JG	82	extern void ttm_dma_unpopulate(struct ttm_dma_tt ttm_dma, struct device dev);
2334b75f KRW	83
	84	#else
	85	static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob,
	86	unsigned max_pages)
	87	{
	88	return -ENODEV;
	89	}
	90
	91	static inline void ttm_dma_page_alloc_fini(void) { return; }
	92
	93	static inline int ttm_dma_page_alloc_debugfs(struct seq_file m, void data)
	94	{
	95	return 0;
	96	}
	97	#endif
	98
1403b1a3	99	#endif