2 * Copyright (c) Red Hat Inc.
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:
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
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
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21 * DEALINGS IN THE SOFTWARE.
23 * Authors: Dave Airlie <airlied@redhat.com>
24 * Jerome Glisse <jglisse@redhat.com>
26 #ifndef TTM_PAGE_ALLOC
27 #define TTM_PAGE_ALLOC
29 #include <drm/ttm/ttm_bo_driver.h>
30 #include <drm/ttm/ttm_memory.h>
35 * Initialize pool allocator.
37 int ttm_page_alloc_init(struct ttm_mem_global
*glob
, unsigned max_pages
);
39 * Free pool allocator.
41 void ttm_page_alloc_fini(void);
46 * @ttm: The struct ttm_tt to contain the backing pages.
48 * Add backing pages to all of @ttm
50 extern int ttm_pool_populate(struct ttm_tt
*ttm
);
53 * ttm_pool_unpopulate:
55 * @ttm: The struct ttm_tt which to free backing pages.
57 * Free all pages of @ttm
59 extern void ttm_pool_unpopulate(struct ttm_tt
*ttm
);
62 * Output the state of pools to debugfs file
64 extern int ttm_page_alloc_debugfs(struct seq_file
*m
, void *data
);
67 #if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU)
69 * Initialize pool allocator.
71 int ttm_dma_page_alloc_init(struct ttm_mem_global
*glob
, unsigned max_pages
);
74 * Free pool allocator.
76 void ttm_dma_page_alloc_fini(void);
79 * Output the state of pools to debugfs file
81 extern int ttm_dma_page_alloc_debugfs(struct seq_file
*m
, void *data
);
83 extern int ttm_dma_populate(struct ttm_dma_tt
*ttm_dma
, struct device
*dev
);
84 extern void ttm_dma_unpopulate(struct ttm_dma_tt
*ttm_dma
, struct device
*dev
);
87 static inline int ttm_dma_page_alloc_init(struct ttm_mem_global
*glob
,
93 static inline void ttm_dma_page_alloc_fini(void) { return; }
95 static inline int ttm_dma_page_alloc_debugfs(struct seq_file
*m
, void *data
)
99 static inline int ttm_dma_populate(struct ttm_dma_tt
*ttm_dma
,
104 static inline void ttm_dma_unpopulate(struct ttm_dma_tt
*ttm_dma
,