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/* $FreeBSD$ */
27#ifndef TTM_PAGE_ALLOC
28#define TTM_PAGE_ALLOC
29
30#include <dev/drm2/ttm/ttm_bo_driver.h>
31#include <dev/drm2/ttm/ttm_memory.h>
32
33/**
34 * Initialize pool allocator.
35 */
36int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
37/**
38 * Free pool allocator.
39 */
40void ttm_page_alloc_fini(void);
41
42/**
43 * ttm_pool_populate:
44 *
45 * @ttm: The struct ttm_tt to contain the backing pages.
46 *
47 * Add backing pages to all of @ttm
48 */
49extern int ttm_pool_populate(struct ttm_tt *ttm);
50
51/**
52 * ttm_pool_unpopulate:
53 *
54 * @ttm: The struct ttm_tt which to free backing pages.
55 *
56 * Free all pages of @ttm
57 */
58extern void ttm_pool_unpopulate(struct ttm_tt *ttm);
59
60/**
61 * Output the state of pools to debugfs file
62 */
63/* XXXKIB
64extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
65*/
66
67#ifdef CONFIG_SWIOTLB
68/**
69 * Initialize pool allocator.
70 */
71int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
72
73/**
74 * Free pool allocator.
75 */
76void ttm_dma_page_alloc_fini(void);
77
78/**
79 * Output the state of pools to debugfs file
80 */
81extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data);
82
83extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev);
84extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev);
85
86#else
87static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob,
88					  unsigned max_pages)
89{
90	return -ENODEV;
91}
92
93static inline void ttm_dma_page_alloc_fini(void) { return; }
94
95/* XXXKIB
96static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data)
97{
98	return 0;
99}
100*/
101#endif
102
103#endif
104