diff options
Diffstat (limited to 'drivers/gpu/drm/drm_prime.c')
| -rw-r--r-- | drivers/gpu/drm/drm_prime.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index d6808f678db5..7db55fce35d8 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -386,8 +386,6 @@ static struct dma_buf *export_and_register_object(struct drm_device *dev, if (obj->funcs && obj->funcs->export) dmabuf = obj->funcs->export(obj, flags); - else if (dev->driver->gem_prime_export) - dmabuf = dev->driver->gem_prime_export(obj, flags); else dmabuf = drm_gem_prime_export(obj, flags); if (IS_ERR(dmabuf)) { @@ -419,7 +417,7 @@ static struct dma_buf *export_and_register_object(struct drm_device *dev, * This is the PRIME export function which must be used mandatorily by GEM * drivers to ensure correct lifetime management of the underlying GEM object. * The actual exporting from GEM object to a dma-buf is done through the - * &drm_driver.gem_prime_export driver callback. + * &drm_gem_object_funcs.export callback. */ int drm_gem_prime_handle_to_fd(struct drm_device *dev, struct drm_file *file_priv, uint32_t handle, @@ -622,10 +620,12 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, if (WARN_ON(dir == DMA_NONE)) return ERR_PTR(-EINVAL); - if (obj->funcs) - sgt = obj->funcs->get_sg_table(obj); - else - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); + if (WARN_ON(!obj->funcs->get_sg_table)) + return ERR_PTR(-ENOSYS); + + sgt = obj->funcs->get_sg_table(obj); + if (IS_ERR(sgt)) + return sgt; ret = dma_map_sgtable(attach->dev, sgt, dir, DMA_ATTR_SKIP_CPU_SYNC); @@ -663,38 +663,35 @@ EXPORT_SYMBOL(drm_gem_unmap_dma_buf); /** * drm_gem_dmabuf_vmap - dma_buf vmap implementation for GEM * @dma_buf: buffer to be mapped + * @map: the virtual address of the buffer * * Sets up a kernel virtual mapping. This can be used as the &dma_buf_ops.vmap * callback. Calls into &drm_gem_object_funcs.vmap for device specific handling. + * The kernel virtual address is returned in map. * - * Returns the kernel virtual address or NULL on failure. + * Returns 0 on success or a negative errno code otherwise. */ -void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf) +int drm_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct dma_buf_map *map) { struct drm_gem_object *obj = dma_buf->priv; - void *vaddr; - - vaddr = drm_gem_vmap(obj); - if (IS_ERR(vaddr)) - vaddr = NULL; - return vaddr; + return drm_gem_vmap(obj, map); } EXPORT_SYMBOL(drm_gem_dmabuf_vmap); /** * drm_gem_dmabuf_vunmap - dma_buf vunmap implementation for GEM * @dma_buf: buffer to be unmapped - * @vaddr: the virtual address of the buffer + * @map: the virtual address of the buffer * * Releases a kernel virtual mapping. This can be used as the * &dma_buf_ops.vunmap callback. Calls into &drm_gem_object_funcs.vunmap for device specific handling. */ -void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr) +void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct dma_buf_map *map) { struct drm_gem_object *obj = dma_buf->priv; - drm_gem_vunmap(obj, vaddr); + drm_gem_vunmap(obj, map); } EXPORT_SYMBOL(drm_gem_dmabuf_vunmap); @@ -794,6 +791,7 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = { /** * drm_prime_pages_to_sg - converts a page array into an sg list + * @dev: DRM device * @pages: pointer to the array of page pointers to convert * @nr_pages: length of the page vector * @@ -816,8 +814,8 @@ struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev, if (dev) max_segment = dma_max_mapping_size(dev->dev); - if (max_segment == 0 || max_segment > SCATTERLIST_MAX_SEGMENT) - max_segment = SCATTERLIST_MAX_SEGMENT; + if (max_segment == 0) + max_segment = UINT_MAX; sge = __sg_alloc_table_from_pages(sg, pages, nr_pages, 0, nr_pages << PAGE_SHIFT, max_segment, |