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
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#include <linux/dma-buf.h>
#include <drm/drm_prime.h>
#include "msm_drv.h"
#include "msm_gem.h"
int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
{
int ret;
/* Ensure the mmap offset is initialized. We lazily initialize it,
* so if it has not been first mmap'd directly as a GEM object, the
* mmap offset will not be already initialized.
*/
ret = drm_gem_create_mmap_offset(obj);
if (ret)
return ret;
return drm_gem_prime_mmap(obj, vma);
}
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 ERR_PTR(-ENOMEM);
return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages);
}
int msm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map)
{
void *vaddr;
vaddr = msm_gem_get_vaddr(obj);
if (IS_ERR(vaddr))
return PTR_ERR(vaddr);
iosys_map_set_vaddr(map, vaddr);
return 0;
}
void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
{
msm_gem_put_vaddr(obj);
}
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, 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);
}
|
