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
75
76
77
78
79
|
// SPDX-License-Identifier: GPL-2.0 OR MIT
/*
* Xen para-virtual DRM device
*
* Copyright (C) 2016-2018 EPAM Systems Inc.
*
* Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
*/
#include <drm/drmP.h>
#include <drm/drm_gem.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include "xen_drm_front.h"
#include "xen_drm_front_gem.h"
struct drm_gem_object *
xen_drm_front_gem_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sgt)
{
struct xen_drm_front_drm_info *drm_info = dev->dev_private;
struct drm_gem_object *gem_obj;
struct drm_gem_cma_object *cma_obj;
int ret;
gem_obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt);
if (IS_ERR_OR_NULL(gem_obj))
return gem_obj;
cma_obj = to_drm_gem_cma_obj(gem_obj);
ret = xen_drm_front_dbuf_create_from_sgt(drm_info->front_info,
xen_drm_front_dbuf_to_cookie(gem_obj),
0, 0, 0, gem_obj->size,
drm_gem_cma_prime_get_sg_table(gem_obj));
if (ret < 0)
return ERR_PTR(ret);
DRM_DEBUG("Imported CMA buffer of size %zu\n", gem_obj->size);
return gem_obj;
}
struct sg_table *xen_drm_front_gem_get_sg_table(struct drm_gem_object *gem_obj)
{
return drm_gem_cma_prime_get_sg_table(gem_obj);
}
struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev,
size_t size)
{
struct xen_drm_front_drm_info *drm_info = dev->dev_private;
struct drm_gem_cma_object *cma_obj;
if (drm_info->front_info->cfg.be_alloc) {
/* This use-case is not yet supported and probably won't be */
DRM_ERROR("Backend allocated buffers and CMA helpers are not supported at the same time\n");
return ERR_PTR(-EINVAL);
}
cma_obj = drm_gem_cma_create(dev, size);
if (IS_ERR_OR_NULL(cma_obj))
return ERR_CAST(cma_obj);
return &cma_obj->base;
}
void xen_drm_front_gem_free_object_unlocked(struct drm_gem_object *gem_obj)
{
drm_gem_cma_free_object(gem_obj);
}
struct page **xen_drm_front_gem_get_pages(struct drm_gem_object *gem_obj)
{
return NULL;
}
|
