[mirror_ubuntu-bionic-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>

struct device;

/**
 * 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);


#if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU)
/**
 * 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;
}
static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma,
				   struct device *dev)
{
	return -ENOMEM;
}
static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma,
				      struct device *dev)
{
}
#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
728a0cdf AC	32	struct device;
728a0cdf AC	33
1403b1a3 PN	34	/**
1403b1a3 PN	35	* Initialize pool allocator.
1403b1a3	36	*/
c96af79e	37	int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
1403b1a3 PN	38	/**
	39	* Free pool allocator.
	40	*/
	41	void ttm_page_alloc_fini(void);
	42
b1e5f172 JG	43	/**
	44	* ttm_pool_populate:
	45	*
	46	* @ttm: The struct ttm_tt to contain the backing pages.
	47	*
	48	* Add backing pages to all of @ttm
	49	*/
	50	extern int ttm_pool_populate(struct ttm_tt *ttm);
	51
	52	/**
	53	* ttm_pool_unpopulate:
	54	*
	55	* @ttm: The struct ttm_tt which to free backing pages.
	56	*
	57	* Free all pages of @ttm
	58	*/
	59	extern void ttm_pool_unpopulate(struct ttm_tt *ttm);
	60
07458661 PN	61	/**
	62	* Output the state of pools to debugfs file
	63	*/
	64	extern int ttm_page_alloc_debugfs(struct seq_file m, void data);
2334b75f KRW	65
2334b75f KRW	66
7aeb7448	67	#if defined(CONFIG_SWIOTLB) \|\| defined(CONFIG_INTEL_IOMMU)
2334b75f KRW	68	/**
	69	* Initialize pool allocator.
	70	*/
	71	int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
	72
	73	/**
	74	* Free pool allocator.
	75	*/
	76	void ttm_dma_page_alloc_fini(void);
	77
	78	/**
	79	* Output the state of pools to debugfs file
	80	*/
	81	extern int ttm_dma_page_alloc_debugfs(struct seq_file m, void data);
	82
8e7e7052 JG	83	extern int ttm_dma_populate(struct ttm_dma_tt ttm_dma, struct device dev);
8e7e7052 JG	84	extern void ttm_dma_unpopulate(struct ttm_dma_tt ttm_dma, struct device dev);
2334b75f KRW	85
	86	#else
	87	static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob,
	88	unsigned max_pages)
	89	{
	90	return -ENODEV;
	91	}
	92
	93	static inline void ttm_dma_page_alloc_fini(void) { return; }
	94
	95	static inline int ttm_dma_page_alloc_debugfs(struct seq_file m, void data)
	96	{
	97	return 0;
	98	}
7aeb7448 TH	99	static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma,
	100	struct device *dev)
	101	{
	102	return -ENOMEM;
	103	}
	104	static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma,
	105	struct device *dev)
	106	{
	107	}
2334b75f KRW	108	#endif
2334b75f KRW	109
1403b1a3	110	#endif