summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/msm/msm_gem_prime.c
blob: 831461bc98a549e8a3627cbd1cf5a1b4a3250c7b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "msm_drv.h"
#include "msm_gem.h"

#include <linux/dma-buf.h>

struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
{
	struct msm_gem_object *msm_obj = to_msm_bo(obj);
	int npages = obj->size >> PAGE_SHIFT;

	if (WARN_ON(!msm_obj->pages))  /* should have already pinned! */
		return NULL;

	return drm_prime_pages_to_sg(msm_obj->pages, npages);
}

void *msm_gem_prime_vmap(struct drm_gem_object *obj)
{
	return msm_gem_vaddr(obj);
}

void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
{
	/* TODO msm_gem_vunmap() */
}

int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
{
	int ret;

	mutex_lock(&obj->dev->struct_mutex);
	ret = drm_gem_mmap_obj(obj, obj->size, vma);
	mutex_unlock(&obj->dev->struct_mutex);
	if (ret < 0)
		return ret;

	return msm_gem_mmap_obj(vma->vm_private_data, vma);
}

struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
		struct dma_buf_attachment *attach, struct sg_table *sg)
{
	return msm_gem_import(dev, attach->dmabuf->size, sg);
}

int msm_gem_prime_pin(struct drm_gem_object *obj)
{
	if (!obj->import_attach)
		msm_gem_get_pages(obj);
	return 0;
}

void msm_gem_prime_unpin(struct drm_gem_object *obj)
{
	if (!obj->import_attach)
		msm_gem_put_pages(obj);
}
OpenPOWER on IntegriCloud