diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_vsp.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c index 23e41c83c875..b7fc5b069cbc 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c @@ -187,17 +187,43 @@ int rcar_du_vsp_map_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb, struct sg_table sg_tables[3]) { struct rcar_du_device *rcdu = vsp->dev; - unsigned int i; + unsigned int i, j; int ret; for (i = 0; i < fb->format->num_planes; ++i) { struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i); struct sg_table *sgt = &sg_tables[i]; - ret = dma_get_sgtable(rcdu->dev, sgt, gem->vaddr, gem->paddr, - gem->base.size); - if (ret) - goto fail; + if (gem->sgt) { + struct scatterlist *src; + struct scatterlist *dst; + + /* + * If the GEM buffer has a scatter gather table, it has + * been imported from a dma-buf and has no physical + * address as it might not be physically contiguous. + * Copy the original scatter gather table to map it to + * the VSP. + */ + ret = sg_alloc_table(sgt, gem->sgt->orig_nents, + GFP_KERNEL); + if (ret) + goto fail; + + src = gem->sgt->sgl; + dst = sgt->sgl; + for (j = 0; j < gem->sgt->orig_nents; ++j) { + sg_set_page(dst, sg_page(src), src->length, + src->offset); + src = sg_next(src); + dst = sg_next(dst); + } + } else { + ret = dma_get_sgtable(rcdu->dev, sgt, gem->vaddr, + gem->paddr, gem->base.size); + if (ret) + goto fail; + } ret = vsp1_du_map_sg(vsp->vsp, sgt); if (ret) { |