[v2,2/3] drm/shmem-helper: Implement struct drm_driver.gem_prime_create_object

Message ID	20210222124328.27340-3-tzimmermann@suse.de
State	New
Headers	show Return-Path: <linux-media-owner@kernel.org> From: Thomas Zimmermann <tzimmermann@suse.de> To: daniel@ffwll.ch, airlied@linux.ie, maarten.lankhorst@linux.intel.com, mripard@kernel.org, yuq825@gmail.com, robh@kernel.org, tomeu.vizoso@collabora.com, steven.price@arm.com, alyssa.rosenzweig@collabora.com, eric@anholt.net, sumit.semwal@linaro.org, christian.koenig@amd.com, stern@rowland.harvard.edu Cc: dri-devel@lists.freedesktop.org, lima@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Thomas Zimmermann <tzimmermann@suse.de> Subject: [PATCH v2 2/3] drm/shmem-helper: Implement struct drm_driver.gem_prime_create_object Date: Mon, 22 Feb 2021 13:43:27 +0100 Message-Id: <20210222124328.27340-3-tzimmermann@suse.de> In-Reply-To: <20210222124328.27340-1-tzimmermann@suse.de> References: <20210222124328.27340-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	drm/prime: Only call dma_map_sgtable() for devices with DMA support \| expand [v2,0/3] drm/prime: Only call dma_map_sgtable() for devices with DMA support [v2,1/3] drm: Support importing dmabufs into drivers without DMA [v2,2/3] drm/shmem-helper: Implement struct drm_driver.gem_prime_create_object [v2,3/3] drm/cma-helper: Implement struct drm_driver.gem_prime_create_object

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index c8a6547a1757..d11154ec0db5 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -711,36 +711,50 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj) EXPORT_SYMBOL_GPL(drm_gem_shmem_get_pages_sgt); /** - * drm_gem_shmem_prime_import_sg_table - Produce a shmem GEM object from - * another driver's scatter/gather table of pinned pages + * drm_gem_shmem_prime_create_object - Produce a shmem GEM object from + * another driver's DMA-BUF attachment * @dev: Device to import into * @attach: DMA-BUF attachment - * @sgt: Scatter/gather table of pinned pages * - * This function imports a scatter/gather table exported via DMA-BUF by - * another driver. Drivers that use the shmem helpers should set this as their - * &drm_driver.gem_prime_import_sg_table callback. + * This function imports a DMA-BUF attachment exported by another driver. + * If supported, it sets a scatter/gather table of pinned pages. Drivers + * that use the shmem helpers should set this as their + * &drm_driver.gem_prime_create_object callback. * * Returns: * A pointer to a newly created GEM object or an ERR_PTR-encoded negative * error code on failure. */ struct drm_gem_object * -drm_gem_shmem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +drm_gem_shmem_prime_create_object(struct drm_device *dev, + struct dma_buf_attachment *attach) { size_t size = PAGE_ALIGN(attach->dmabuf->size); + struct sg_table *sgt = NULL; struct drm_gem_shmem_object *shmem; + int ret; + + if (dev->dev->dma_mask) { + sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) + return ERR_CAST(sgt); + } shmem = __drm_gem_shmem_create(dev, size, true); - if (IS_ERR(shmem)) - return ERR_CAST(shmem); + if (IS_ERR(shmem)) { + ret = PTR_ERR(shmem); + goto err; + } shmem->sgt = sgt; DRM_DEBUG_PRIME("size = %zu\n", size); return &shmem->base; + +err: + if (sgt) + dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); + return ERR_PTR(ret); } -EXPORT_SYMBOL_GPL(drm_gem_shmem_prime_import_sg_table); +EXPORT_SYMBOL_GPL(drm_gem_shmem_prime_create_object); diff --git a/drivers/gpu/drm/lima/lima_drv.c b/drivers/gpu/drm/lima/lima_drv.c index 7b8d7178d09a..c8090289ecc7 100644 --- a/drivers/gpu/drm/lima/lima_drv.c +++ b/drivers/gpu/drm/lima/lima_drv.c @@ -277,8 +277,8 @@ static const struct drm_driver lima_drm_driver = { .gem_create_object = lima_gem_create_object, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .gem_prime_create_object = drm_gem_shmem_prime_create_object, .gem_prime_mmap = drm_gem_prime_mmap, }; diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index 83a461bdeea8..8c0979e1926e 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -564,7 +564,7 @@ static const struct drm_driver panfrost_drm_driver = { .gem_create_object = panfrost_gem_create_object, .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 = panfrost_gem_prime_import_sg_table, + .gem_prime_create_object = panfrost_gem_prime_create_object, .gem_prime_mmap = drm_gem_prime_mmap, }; diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index 3e0723bc36bd..69bb70180ac1 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c @@ -269,14 +269,12 @@ panfrost_gem_create_with_handle(struct drm_file *file_priv, } struct drm_gem_object * -panfrost_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +panfrost_gem_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach) { struct drm_gem_object *obj; struct panfrost_gem_object *bo; - obj = drm_gem_shmem_prime_import_sg_table(dev, attach, sgt); + obj = drm_gem_shmem_prime_create_object(dev, attach); if (IS_ERR(obj)) return ERR_CAST(obj); diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panfrost/panfrost_gem.h index 8088d5fd8480..37b8cb4c6626 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.h +++ b/drivers/gpu/drm/panfrost/panfrost_gem.h @@ -64,9 +64,7 @@ drm_mm_node_to_panfrost_mapping(struct drm_mm_node *node) struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t size); struct drm_gem_object * -panfrost_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +panfrost_gem_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach); struct panfrost_gem_object * panfrost_gem_create_with_handle(struct drm_file *file_priv, diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c index 9f13a7c7c2da..0b4f4f2af1ef 100644 --- a/drivers/gpu/drm/tiny/gm12u320.c +++ b/drivers/gpu/drm/tiny/gm12u320.c @@ -601,12 +601,6 @@ static const uint64_t gm12u320_pipe_modifiers[] = { DEFINE_DRM_GEM_FOPS(gm12u320_fops); -static struct drm_gem_object *gm12u320_gem_prime_create_object(struct drm_device *dev, - struct dma_buf_attachment *attach) -{ - return drm_gem_shmem_prime_import_sg_table(dev, attach, NULL); -} - static const struct drm_driver gm12u320_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, @@ -618,7 +612,6 @@ static const struct drm_driver gm12u320_drm_driver = { .fops = &gm12u320_fops, DRM_GEM_SHMEM_DRIVER_OPS, - .gem_prime_create_object = gm12u320_gem_prime_create_object, }; static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = { diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index fdf37b44a956..9269092697d8 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -34,19 +34,12 @@ static int udl_usb_resume(struct usb_interface *interface) DEFINE_DRM_GEM_FOPS(udl_driver_fops); -static struct drm_gem_object *udl_gem_prime_create_object(struct drm_device *dev, - struct dma_buf_attachment *attach) -{ - return drm_gem_shmem_prime_import_sg_table(dev, attach, NULL); -} - static const struct drm_driver driver = { .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET, /* GEM hooks */ .fops = &udl_driver_fops, DRM_GEM_SHMEM_DRIVER_OPS, - .gem_prime_create_object = udl_gem_prime_create_object, .name = DRIVER_NAME, .desc = DRIVER_DESC, diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c index 6a8731ab9d7d..37f65cb44703 100644 --- a/drivers/gpu/drm/v3d/v3d_bo.c +++ b/drivers/gpu/drm/v3d/v3d_bo.c @@ -146,14 +146,12 @@ struct v3d_bo *v3d_bo_create(struct drm_device *dev, struct drm_file *file_priv, } struct drm_gem_object * -v3d_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +v3d_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach) { struct drm_gem_object *obj; int ret; - obj = drm_gem_shmem_prime_import_sg_table(dev, attach, sgt); + obj = drm_gem_shmem_prime_create_object(dev, attach); if (IS_ERR(obj)) return obj; diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index 99e22beea90b..72d50e240726 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -173,7 +173,7 @@ static const struct drm_driver v3d_drm_driver = { .gem_create_object = v3d_create_object, .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 = v3d_prime_import_sg_table, + .gem_prime_create_object = v3d_prime_create_object, .gem_prime_mmap = drm_gem_prime_mmap, .ioctls = v3d_drm_ioctls, diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 8a390738d65b..6e4f3eb0b9fc 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -310,9 +310,8 @@ int v3d_mmap_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int v3d_get_bo_offset_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); -struct drm_gem_object *v3d_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +struct drm_gem_object *v3d_prime_create_object(struct drm_device *dev, + struct dma_buf_attachment *attach); /* v3d_debugfs.c */ void v3d_debugfs_init(struct drm_minor *minor); diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index 434328d8a0d9..837f3b5a83af 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -143,9 +143,7 @@ void drm_gem_shmem_print_info(struct drm_printer *p, unsigned int indent, struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object * -drm_gem_shmem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +drm_gem_shmem_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach); struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj); @@ -158,7 +156,7 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj); #define DRM_GEM_SHMEM_DRIVER_OPS \ .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 = drm_gem_shmem_prime_import_sg_table, \ + .gem_prime_create_object = drm_gem_shmem_prime_create_object, \ .gem_prime_mmap = drm_gem_prime_mmap, \ .dumb_create = drm_gem_shmem_dumb_create

[v2,2/3] drm/shmem-helper: Implement struct drm_driver.gem_prime_create_object

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