xref: /openbmc/linux/drivers/gpu/drm/msm/msm_gem_prime.c (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
1caab277bSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
205b84911SRob Clark /*
305b84911SRob Clark  * Copyright (C) 2013 Red Hat
405b84911SRob Clark  * Author: Rob Clark <robdclark@gmail.com>
505b84911SRob Clark  */
605b84911SRob Clark 
7feea39a8SSam Ravnborg #include <linux/dma-buf.h>
8feea39a8SSam Ravnborg 
9feea39a8SSam Ravnborg #include <drm/drm_prime.h>
10feea39a8SSam Ravnborg 
1105b84911SRob Clark #include "msm_drv.h"
1205b84911SRob Clark #include "msm_gem.h"
1305b84911SRob Clark 
msm_gem_prime_get_sg_table(struct drm_gem_object * obj)14036d2072SRob Clark struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
15036d2072SRob Clark {
16036d2072SRob Clark 	struct msm_gem_object *msm_obj = to_msm_bo(obj);
17036d2072SRob Clark 	int npages = obj->size >> PAGE_SHIFT;
18036d2072SRob Clark 
19036d2072SRob Clark 	if (WARN_ON(!msm_obj->pages))  /* should have already pinned! */
20036d2072SRob Clark 		return ERR_PTR(-ENOMEM);
21036d2072SRob Clark 
22036d2072SRob Clark 	return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages);
23036d2072SRob Clark }
24036d2072SRob Clark 
msm_gem_prime_vmap(struct drm_gem_object * obj,struct iosys_map * map)25036d2072SRob Clark int msm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map)
26036d2072SRob Clark {
27036d2072SRob Clark 	void *vaddr;
28036d2072SRob Clark 
2905b84911SRob Clark 	vaddr = msm_gem_get_vaddr_locked(obj);
3005b84911SRob Clark 	if (IS_ERR(vaddr))
3105b84911SRob Clark 		return PTR_ERR(vaddr);
32ac451467SRob Clark 	iosys_map_set_vaddr(map, vaddr);
33ac451467SRob Clark 
34ac451467SRob Clark 	return 0;
35cf575e31SDan Carpenter }
36ac451467SRob Clark 
msm_gem_prime_vunmap(struct drm_gem_object * obj,struct iosys_map * map)37707d561fSGerd Hoffmann void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
3805b84911SRob Clark {
3905b84911SRob Clark 	msm_gem_put_vaddr_locked(obj);
407938f421SLucas De Marchi }
4105b84911SRob Clark 
msm_gem_prime_import_sg_table(struct drm_device * dev,struct dma_buf_attachment * attach,struct sg_table * sg)42b47f9f92SThomas Zimmermann struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
43b47f9f92SThomas Zimmermann 		struct dma_buf_attachment *attach, struct sg_table *sg)
44b47f9f92SThomas Zimmermann {
45b47f9f92SThomas Zimmermann 	return msm_gem_import(dev, attach->dmabuf, sg);
46b47f9f92SThomas Zimmermann }
477938f421SLucas De Marchi 
msm_gem_prime_pin(struct drm_gem_object * obj)48b47f9f92SThomas Zimmermann int msm_gem_prime_pin(struct drm_gem_object *obj)
49b47f9f92SThomas Zimmermann {
5005b84911SRob Clark 	if (!obj->import_attach)
5105b84911SRob Clark 		msm_gem_pin_pages(obj);
527938f421SLucas De Marchi 	return 0;
5305b84911SRob Clark }
5418f23049SRob Clark 
msm_gem_prime_unpin(struct drm_gem_object * obj)5505b84911SRob Clark void msm_gem_prime_unpin(struct drm_gem_object *obj)
5605b84911SRob Clark {
5705b84911SRob Clark 	if (!obj->import_attach)
58b5e9c1a2SMaarten Lankhorst 		msm_gem_unpin_pages(obj);
5905b84911SRob Clark }
6079f0e202SRob Clark