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
29 #include <dev/drm2/ttm/ttm_bo_driver.h>
30 #include <dev/drm2/ttm/ttm_memory.h>
31
32 /**
33 * Initialize pool allocator.
34 */
35 int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
36 /**
37 * Free pool allocator.
38 */
39 void ttm_page_alloc_fini(void);
40
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
59 /**
60 * Output the state of pools to debugfs file
61 */
62 /* XXXKIB
63 extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
64 */
65
66 #ifdef CONFIG_SWIOTLB
67 /**
68 * Initialize pool allocator.
69 */
70 int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
71
72 /**
73 * Free pool allocator.
74 */
75 void ttm_dma_page_alloc_fini(void);
76
77 /**
78 * Output the state of pools to debugfs file
79 */
80 extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data);
81
82 extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev);
83 extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev);
84
85 #else
ttm_dma_page_alloc_init(struct ttm_mem_global * glob,unsigned max_pages)86 static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob,
87 unsigned max_pages)
88 {
89 return -ENODEV;
90 }
91
ttm_dma_page_alloc_fini(void)92 static inline void ttm_dma_page_alloc_fini(void) { return; }
93
94 /* XXXKIB
95 static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data)
96 {
97 return 0;
98 }
99 */
100 #endif
101
102 #endif
103