On Tue, May 22, 2012 at 8:50 AM, Dave Airlie <airlied at gmail.com> wrote: > From: Dave Airlie <airlied at redhat.com> > > udl can only be used as an output offload so doesn't need to support > handle->fd direction. > > Signed-off-by: Dave Airlie <airlied at redhat.com>
I'm not real familiar with udl, but the code seems straight-forward. Reviewed-by: Alex Deucher <alexander.deucher at amd.com> > --- > ?drivers/gpu/drm/udl/udl_drv.c | ? ?6 +++- > ?drivers/gpu/drm/udl/udl_drv.h | ? ?3 ++ > ?drivers/gpu/drm/udl/udl_fb.c ?| ? ?9 +++++ > ?drivers/gpu/drm/udl/udl_gem.c | ? 75 > +++++++++++++++++++++++++++++++++++++++++ > ?4 files changed, 92 insertions(+), 1 deletions(-) > > diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c > index 82e6921..4d02c46 100644 > --- a/drivers/gpu/drm/udl/udl_drv.c > +++ b/drivers/gpu/drm/udl/udl_drv.c > @@ -57,7 +57,7 @@ static const struct file_operations udl_driver_fops = { > ?}; > > ?static struct drm_driver driver = { > - ? ? ? .driver_features = DRIVER_MODESET | DRIVER_GEM, > + ? ? ? .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, > ? ? ? ?.load = udl_driver_load, > ? ? ? ?.unload = udl_driver_unload, > > @@ -70,6 +70,10 @@ static struct drm_driver driver = { > ? ? ? ?.dumb_map_offset = udl_gem_mmap, > ? ? ? ?.dumb_destroy = udl_dumb_destroy, > ? ? ? ?.fops = &udl_driver_fops, > + > + ? ? ? .prime_fd_to_handle = drm_gem_prime_fd_to_handle, > + ? ? ? .gem_prime_import = udl_gem_prime_import, > + > ? ? ? ?.name = DRIVER_NAME, > ? ? ? ?.desc = DRIVER_DESC, > ? ? ? ?.date = DRIVER_DATE, > diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h > index 96820d0..fccd361 100644 > --- a/drivers/gpu/drm/udl/udl_drv.h > +++ b/drivers/gpu/drm/udl/udl_drv.h > @@ -66,6 +66,7 @@ struct udl_gem_object { > ? ? ? ?struct drm_gem_object base; > ? ? ? ?struct page **pages; > ? ? ? ?void *vmapping; > + ? ? ? struct sg_table *sg; > ?}; > > ?#define to_udl_bo(x) container_of(x, struct udl_gem_object, base) > @@ -118,6 +119,8 @@ int udl_gem_init_object(struct drm_gem_object *obj); > ?void udl_gem_free_object(struct drm_gem_object *gem_obj); > ?struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev, > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?size_t size); > +struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev, > + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? struct dma_buf *dma_buf); > > ?int udl_gem_vmap(struct udl_gem_object *obj); > ?void udl_gem_vunmap(struct udl_gem_object *obj); > diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c > index 4d9c3a5..a029ee3 100644 > --- a/drivers/gpu/drm/udl/udl_fb.c > +++ b/drivers/gpu/drm/udl/udl_fb.c > @@ -593,11 +593,20 @@ udl_fb_user_fb_create(struct drm_device *dev, > ? ? ? ?struct drm_gem_object *obj; > ? ? ? ?struct udl_framebuffer *ufb; > ? ? ? ?int ret; > + ? ? ? uint32_t size; > > ? ? ? ?obj = drm_gem_object_lookup(dev, file, mode_cmd->handles[0]); > ? ? ? ?if (obj == NULL) > ? ? ? ? ? ? ? ?return ERR_PTR(-ENOENT); > > + ? ? ? size = mode_cmd->pitches[0] * mode_cmd->height; > + ? ? ? size = ALIGN(size, PAGE_SIZE); > + > + ? ? ? if (size > obj->size) { > + ? ? ? ? ? ? ? DRM_ERROR("object size not sufficient for fb %d %zu %d %d\n", > size, obj->size, mode_cmd->pitches[0], mode_cmd->height); > + ? ? ? ? ? ? ? return ERR_PTR(-ENOMEM); > + ? ? ? } > + > ? ? ? ?ufb = kzalloc(sizeof(*ufb), GFP_KERNEL); > ? ? ? ?if (ufb == NULL) > ? ? ? ? ? ? ? ?return ERR_PTR(-ENOMEM); > diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c > index 92f19ef..40efd32 100644 > --- a/drivers/gpu/drm/udl/udl_gem.c > +++ b/drivers/gpu/drm/udl/udl_gem.c > @@ -9,6 +9,7 @@ > ?#include "drmP.h" > ?#include "udl_drv.h" > ?#include <linux/shmem_fs.h> > +#include <linux/dma-buf.h> > > ?struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev, > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?size_t size) > @@ -161,6 +162,12 @@ static void udl_gem_put_pages(struct udl_gem_object *obj) > ? ? ? ?int page_count = obj->base.size / PAGE_SIZE; > ? ? ? ?int i; > > + ? ? ? if (obj->base.import_attach) { > + ? ? ? ? ? ? ? drm_free_large(obj->pages); > + ? ? ? ? ? ? ? obj->pages = NULL; > + ? ? ? ? ? ? ? return; > + ? ? ? } > + > ? ? ? ?for (i = 0; i < page_count; i++) > ? ? ? ? ? ? ? ?page_cache_release(obj->pages[i]); > > @@ -195,6 +202,9 @@ void udl_gem_free_object(struct drm_gem_object *gem_obj) > ?{ > ? ? ? ?struct udl_gem_object *obj = to_udl_bo(gem_obj); > > + ? ? ? if (gem_obj->import_attach) > + ? ? ? ? ? ? ? drm_prime_gem_destroy(gem_obj, obj->sg); > + > ? ? ? ?if (obj->vmapping) > ? ? ? ? ? ? ? ?udl_gem_vunmap(obj); > > @@ -239,3 +249,68 @@ unlock: > ? ? ? ?mutex_unlock(&dev->struct_mutex); > ? ? ? ?return ret; > ?} > + > +static int udl_prime_create(struct drm_device *dev, > + ? ? ? ? ? ? ? ? ? ? ? ? ? size_t size, > + ? ? ? ? ? ? ? ? ? ? ? ? ? struct sg_table *sg, > + ? ? ? ? ? ? ? ? ? ? ? ? ? struct udl_gem_object **obj_p) > +{ > + ? ? ? struct udl_gem_object *obj; > + ? ? ? int npages; > + ? ? ? int i; > + ? ? ? struct scatterlist *iter; > + > + ? ? ? npages = size / PAGE_SIZE; > + > + ? ? ? *obj_p = NULL; > + ? ? ? obj = udl_gem_alloc_object(dev, npages * PAGE_SIZE); > + ? ? ? if (!obj) > + ? ? ? ? ? ? ? return -ENOMEM; > + > + ? ? ? obj->sg = sg; > + ? ? ? obj->pages = drm_malloc_ab(npages, sizeof(struct page *)); > + ? ? ? if (obj->pages == NULL) { > + ? ? ? ? ? ? ? DRM_ERROR("obj pages is NULL %d\n", npages); > + ? ? ? ? ? ? ? return -ENOMEM; > + ? ? ? } > + > + ? ? ? drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages); > + > + ? ? ? *obj_p = obj; > + ? ? ? return 0; > +} > + > +struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev, > + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? struct dma_buf *dma_buf) > +{ > + ? ? ? struct dma_buf_attachment *attach; > + ? ? ? struct sg_table *sg; > + ? ? ? struct udl_gem_object *uobj; > + ? ? ? int ret; > + > + ? ? ? /* need to attach */ > + ? ? ? attach = dma_buf_attach(dma_buf, dev->dev); > + ? ? ? if (IS_ERR(attach)) > + ? ? ? ? ? ? ? return ERR_PTR(PTR_ERR(attach)); > + > + ? ? ? sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); > + ? ? ? if (IS_ERR(sg)) { > + ? ? ? ? ? ? ? ret = PTR_ERR(sg); > + ? ? ? ? ? ? ? goto fail_detach; > + ? ? ? } > + > + ? ? ? ret = udl_prime_create(dev, dma_buf->size, sg, &uobj); > + ? ? ? if (ret) { > + ? ? ? ? ? ? ? goto fail_unmap; > + ? ? ? } > + > + ? ? ? uobj->base.import_attach = attach; > + > + ? ? ? return &uobj->base; > + > +fail_unmap: > + ? ? ? dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL); > +fail_detach: > + ? ? ? dma_buf_detach(dma_buf, attach); > + ? ? ? return ERR_PTR(ret); > +} > -- > 1.7.6 > > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel