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Linux kernel mirror (for testing)
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linux
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7#include "msm_drv.h"
8#include "msm_gem.h"
9
10#include <linux/dma-buf.h>
11
12struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
13{
14 struct msm_gem_object *msm_obj = to_msm_bo(obj);
15 int npages = obj->size >> PAGE_SHIFT;
16
17 if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */
18 return NULL;
19
20 return drm_prime_pages_to_sg(msm_obj->pages, npages);
21}
22
23void *msm_gem_prime_vmap(struct drm_gem_object *obj)
24{
25 return msm_gem_get_vaddr(obj);
26}
27
28void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
29{
30 msm_gem_put_vaddr(obj);
31}
32
33int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
34{
35 int ret;
36
37 ret = drm_gem_mmap_obj(obj, obj->size, vma);
38 if (ret < 0)
39 return ret;
40
41 return msm_gem_mmap_obj(vma->vm_private_data, vma);
42}
43
44struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
45 struct dma_buf_attachment *attach, struct sg_table *sg)
46{
47 return msm_gem_import(dev, attach->dmabuf, sg);
48}
49
50int msm_gem_prime_pin(struct drm_gem_object *obj)
51{
52 if (!obj->import_attach)
53 msm_gem_get_pages(obj);
54 return 0;
55}
56
57void msm_gem_prime_unpin(struct drm_gem_object *obj)
58{
59 if (!obj->import_attach)
60 msm_gem_put_pages(obj);
61}