diff options
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_drv.c | 6 | ||||
-rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_kms.c | 46 | ||||
-rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_kms.h | 7 | ||||
-rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 36 |
4 files changed, 89 insertions, 6 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index 62dfd1b66db0..806c68823a28 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -529,7 +529,11 @@ DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops); static const struct drm_driver rcar_du_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, - DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(rcar_du_dumb_create), + .dumb_create = rcar_du_dumb_create, + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_import_sg_table = rcar_du_gem_prime_import_sg_table, + .gem_prime_mmap = drm_gem_prime_mmap, .fops = &rcar_du_fops, .name = "rcar-du", .desc = "Renesas R-Car Display Unit", diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index ca29e4a62816..eacb1f17f747 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -19,6 +19,7 @@ #include <drm/drm_vblank.h> #include <linux/device.h> +#include <linux/dma-buf.h> #include <linux/of_graph.h> #include <linux/of_platform.h> #include <linux/wait.h> @@ -325,6 +326,51 @@ const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc) * Frame buffer */ +static const struct drm_gem_object_funcs rcar_du_gem_funcs = { + .free = drm_gem_cma_free_object, + .print_info = drm_gem_cma_print_info, + .get_sg_table = drm_gem_cma_get_sg_table, + .vmap = drm_gem_cma_vmap, + .mmap = drm_gem_cma_mmap, + .vm_ops = &drm_gem_cma_vm_ops, +}; + +struct drm_gem_object *rcar_du_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt) +{ + struct rcar_du_device *rcdu = to_rcar_du_device(dev); + struct drm_gem_cma_object *cma_obj; + struct drm_gem_object *gem_obj; + int ret; + + if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) + return drm_gem_cma_prime_import_sg_table(dev, attach, sgt); + + /* Create a CMA GEM buffer. */ + cma_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL); + if (!cma_obj) + return ERR_PTR(-ENOMEM); + + gem_obj = &cma_obj->base; + gem_obj->funcs = &rcar_du_gem_funcs; + + drm_gem_private_object_init(dev, gem_obj, attach->dmabuf->size); + cma_obj->map_noncoherent = false; + + ret = drm_gem_create_mmap_offset(gem_obj); + if (ret) { + drm_gem_object_release(gem_obj); + kfree(cma_obj); + return ERR_PTR(ret); + } + + cma_obj->paddr = 0; + cma_obj->sgt = sgt; + + return gem_obj; +} + int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args) { diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.h b/drivers/gpu/drm/rcar-du/rcar_du_kms.h index 8f5fff176754..789154e19535 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.h @@ -12,10 +12,13 @@ #include <linux/types.h> +struct dma_buf_attachment; struct drm_file; struct drm_device; +struct drm_gem_object; struct drm_mode_create_dumb; struct rcar_du_device; +struct sg_table; struct rcar_du_format_info { u32 fourcc; @@ -34,4 +37,8 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu); int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args); +struct drm_gem_object *rcar_du_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt); + #endif /* __RCAR_DU_KMS_H__ */ 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) { |