| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (C) 2013 Red Hat |
| * Author: Rob Clark <robdclark@gmail.com> |
| */ |
| |
| #include <linux/dma-buf.h> |
| |
| #include <drm/drm_prime.h> |
| |
| #include "msm_drv.h" |
| #include "msm_gem.h" |
| |
| struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj) |
| { |
| struct msm_gem_object *msm_obj = to_msm_bo(obj); |
| int npages = obj->size >> PAGE_SHIFT; |
| |
| if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */ |
| return NULL; |
| |
| return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages); |
| } |
| |
| int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map) |
| { |
| void *vaddr; |
| |
| vaddr = msm_gem_get_vaddr(obj); |
| if (IS_ERR(vaddr)) |
| return PTR_ERR(vaddr); |
| dma_buf_map_set_vaddr(map, vaddr); |
| |
| return 0; |
| } |
| |
| void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map) |
| { |
| msm_gem_put_vaddr(obj); |
| } |
| |
| int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) |
| { |
| int ret; |
| |
| ret = drm_gem_mmap_obj(obj, obj->size, vma); |
| if (ret < 0) |
| return ret; |
| |
| return msm_gem_mmap_obj(vma->vm_private_data, vma); |
| } |
| |
| struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev, |
| struct dma_buf_attachment *attach, struct sg_table *sg) |
| { |
| return msm_gem_import(dev, attach->dmabuf, sg); |
| } |
| |
| int msm_gem_prime_pin(struct drm_gem_object *obj) |
| { |
| if (!obj->import_attach) |
| msm_gem_get_pages(obj); |
| return 0; |
| } |
| |
| void msm_gem_prime_unpin(struct drm_gem_object *obj) |
| { |
| if (!obj->import_attach) |
| msm_gem_put_pages(obj); |
| } |