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
14int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
15{
16	int ret;
17
18	/* Ensure the mmap offset is initialized.  We lazily initialize it,
19	 * so if it has not been first mmap'd directly as a GEM object, the
20	 * mmap offset will not be already initialized.
21	 */
22	ret = drm_gem_create_mmap_offset(obj);
23	if (ret)
24		return ret;
25
26	return drm_gem_prime_mmap(obj, vma);
27}
28
29struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
30{
31	struct msm_gem_object *msm_obj = to_msm_bo(obj);
32	int npages = obj->size >> PAGE_SHIFT;
33
34	if (WARN_ON(!msm_obj->pages))  /* should have already pinned! */
35		return ERR_PTR(-ENOMEM);
36
37	return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages);
38}
39
40int msm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map)
41{
42	void *vaddr;
43
44	vaddr = msm_gem_get_vaddr(obj);
45	if (IS_ERR(vaddr))
46		return PTR_ERR(vaddr);
47	iosys_map_set_vaddr(map, vaddr);
48
49	return 0;
50}
51
52void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
53{
54	msm_gem_put_vaddr(obj);
55}
56
57struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
58		struct dma_buf_attachment *attach, struct sg_table *sg)
59{
60	return msm_gem_import(dev, attach->dmabuf, sg);
61}
62
63int msm_gem_prime_pin(struct drm_gem_object *obj)
64{
65	if (!obj->import_attach)
66		msm_gem_pin_pages(obj);
67	return 0;
68}
69
70void msm_gem_prime_unpin(struct drm_gem_object *obj)
71{
72	if (!obj->import_attach)
73		msm_gem_unpin_pages(obj);
74}