| 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 | |
| 14 | struct 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(error: -ENOMEM); |
| 21 | |
| 22 | return drm_prime_pages_to_sg(dev: obj->dev, pages: msm_obj->pages, nr_pages: npages); |
| 23 | } |
| 24 | |
| 25 | int msm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map) |
| 26 | { |
| 27 | void *vaddr; |
| 28 | |
| 29 | vaddr = msm_gem_get_vaddr_locked(obj); |
| 30 | if (IS_ERR(ptr: vaddr)) |
| 31 | return PTR_ERR(ptr: vaddr); |
| 32 | iosys_map_set_vaddr(map, vaddr); |
| 33 | |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map) |
| 38 | { |
| 39 | msm_gem_put_vaddr_locked(obj); |
| 40 | } |
| 41 | |
| 42 | struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev, |
| 43 | struct dma_buf_attachment *attach, struct sg_table *sg) |
| 44 | { |
| 45 | return msm_gem_import(dev, dmabuf: attach->dmabuf, sgt: sg); |
| 46 | } |
| 47 | |
| 48 | int msm_gem_prime_pin(struct drm_gem_object *obj) |
| 49 | { |
| 50 | if (!obj->import_attach) |
| 51 | msm_gem_pin_pages(obj); |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | void msm_gem_prime_unpin(struct drm_gem_object *obj) |
| 56 | { |
| 57 | if (!obj->import_attach) |
| 58 | msm_gem_unpin_pages(obj); |
| 59 | } |
| 60 |