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 <linux/dma-buf.h>
8
9#include <drm/drm_prime.h>
10
11#include "msm_drv.h"
12#include "msm_gem.h"
13
14struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
15{
16	struct msm_gem_object *msm_obj = to_msm_bo(obj);
17	int npages = obj->size >> PAGE_SHIFT;
18
19	if (WARN_ON(!msm_obj->pages))  /* should have already pinned! */
20		return ERR_PTR(-ENOMEM);
21
22	return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages);
23}
24
25void *msm_gem_prime_vmap(struct drm_gem_object *obj)
26{
27	return msm_gem_get_vaddr(obj);
28}
29
30void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
31{
32	msm_gem_put_vaddr(obj);
33}
34
35int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
36{
37	int ret;
38
39	ret = drm_gem_mmap_obj(obj, obj->size, vma);
40	if (ret < 0)
41		return ret;
42
43	return msm_gem_mmap_obj(vma->vm_private_data, vma);
44}
45
46struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
47		struct dma_buf_attachment *attach, struct sg_table *sg)
48{
49	return msm_gem_import(dev, attach->dmabuf, sg);
50}
51
52int msm_gem_prime_pin(struct drm_gem_object *obj)
53{
54	if (!obj->import_attach)
55		msm_gem_get_pages(obj);
56	return 0;
57}
58
59void msm_gem_prime_unpin(struct drm_gem_object *obj)
60{
61	if (!obj->import_attach)
62		msm_gem_put_pages(obj);
63}
64