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Wed, 16 Sep 2020 05:12:30 -0700 (PDT) Date: Wed, 16 Sep 2020 14:12:27 +0200 From: Daniel Vetter To: Thomas Zimmermann Subject: Re: [PATCH v2 21/21] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver Message-ID: <20200916121227.GP438822@phenom.ffwll.local> References: <20200915145958.19993-1-tzimmermann@suse.de> <20200915145958.19993-22-tzimmermann@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200915145958.19993-22-tzimmermann@suse.de> X-Operating-System: Linux phenom 5.7.0-1-amd64 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: hamohammed.sa@gmail.com, heiko@sntech.de, andrey.grodzovsky@amd.com, airlied@linux.ie, nouveau@lists.freedesktop.org, joonas.lahtinen@linux.intel.com, dri-devel@lists.freedesktop.org, michal.simek@xilinx.com, eric@anholt.net, thierry.reding@gmail.com, robdclark@gmail.com, krzk@kernel.org, sam@ravnborg.org, sumit.semwal@linaro.org, emil.velikov@collabora.com, linux-samsung-soc@vger.kernel.org, jy0922.shim@samsung.com, oleksandr_andrushchenko@epam.com, tomi.valkeinen@ti.com, linux-tegra@vger.kernel.org, linux@armlinux.org.uk, patrik.r.jakobsson@gmail.com, jonathanh@nvidia.com, linux-rockchip@lists.infradead.org, kgene@kernel.org, bskeggs@redhat.com, xen-devel@lists.xenproject.org, miaoqinglang@huawei.com, intel-gfx@lists.freedesktop.org, matthew.auld@intel.com, chunkuang.hu@kernel.org, andi.shyti@intel.com, daniel@ffwll.ch, linux-arm-msm@vger.kernel.org, marek.olsak@amd.com, tianci.yin@amd.com, maarten.lankhorst@linux.intel.com, etnaviv@lists.freedesktop.org, jani.nikula@linux.intel.com, inki.dae@samsung.com, hdegoede@redhat.com, christian.gmeiner@gmail.com, linux-mediatek@lists.infradead.org, mripard@kernel.org, rodrigo.vivi@intel.com, matthias.bgg@gmail.com, evan.quan@amd.com, sean@poorly.run, linux-arm-kernel@lists.infradead.org, tvrtko.ursulin@linux.intel.com, amd-gfx@lists.freedesktop.org, laurent.pinchart@ideasonboard.com, hyun.kwon@xilinx.com, rodrigosiqueiramelo@gmail.com, aaron.liu@amd.com, Felix.Kuehling@amd.com, xinhui.pan@amd.com, sw0312.kim@samsung.com, hjc@rock-chips.com, chris@chris-wilson.co.uk, kyungmin.park@samsung.com, nirmoy.das@amd.com, p.zabel@pengutronix.de, alexander.deucher@amd.com, Hawking.Zhang@amd.com, freedreno@lists.freedesktop.org, christian.koenig@amd.com, l.stach@pengutronix.de Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D70EC35256 for ; 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Wed, 16 Sep 2020 05:12:31 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id z15sm32021991wrv.94.2020.09.16.05.12.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 05:12:30 -0700 (PDT) Date: Wed, 16 Sep 2020 14:12:27 +0200 From: Daniel Vetter To: Thomas Zimmermann Message-ID: <20200916121227.GP438822@phenom.ffwll.local> References: <20200915145958.19993-1-tzimmermann@suse.de> <20200915145958.19993-22-tzimmermann@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200915145958.19993-22-tzimmermann@suse.de> X-Operating-System: Linux phenom 5.7.0-1-amd64 Subject: Re: [Intel-gfx] [PATCH v2 21/21] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: hamohammed.sa@gmail.com, heiko@sntech.de, andrey.grodzovsky@amd.com, airlied@linux.ie, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, michal.simek@xilinx.com, eric@anholt.net, krzk@kernel.org, sam@ravnborg.org, sumit.semwal@linaro.org, emil.velikov@collabora.com, linux-samsung-soc@vger.kernel.org, jy0922.shim@samsung.com, oleksandr_andrushchenko@epam.com, tomi.valkeinen@ti.com, linux-tegra@vger.kernel.org, linux@armlinux.org.uk, jonathanh@nvidia.com, linux-rockchip@lists.infradead.org, kgene@kernel.org, bskeggs@redhat.com, xen-devel@lists.xenproject.org, miaoqinglang@huawei.com, intel-gfx@lists.freedesktop.org, matthew.auld@intel.com, chunkuang.hu@kernel.org, linux-arm-msm@vger.kernel.org, marek.olsak@amd.com, tianci.yin@amd.com, etnaviv@lists.freedesktop.org, inki.dae@samsung.com, christian.gmeiner@gmail.com, linux-mediatek@lists.infradead.org, mripard@kernel.org, matthias.bgg@gmail.com, evan.quan@amd.com, linux-arm-kernel@lists.infradead.org, amd-gfx@lists.freedesktop.org, laurent.pinchart@ideasonboard.com, hyun.kwon@xilinx.com, rodrigosiqueiramelo@gmail.com, aaron.liu@amd.com, Felix.Kuehling@amd.com, xinhui.pan@amd.com, sw0312.kim@samsung.com, hjc@rock-chips.com, chris@chris-wilson.co.uk, kyungmin.park@samsung.com, nirmoy.das@amd.com, p.zabel@pengutronix.de, alexander.deucher@amd.com, Hawking.Zhang@amd.com, freedreno@lists.freedesktop.org, christian.koenig@amd.com, l.stach@pengutronix.de Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B92E0C43461 for ; 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Wed, 16 Sep 2020 05:12:31 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id z15sm32021991wrv.94.2020.09.16.05.12.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 05:12:30 -0700 (PDT) Date: Wed, 16 Sep 2020 14:12:27 +0200 From: Daniel Vetter To: Thomas Zimmermann Cc: alexander.deucher@amd.com, christian.koenig@amd.com, airlied@linux.ie, daniel@ffwll.ch, linux@armlinux.org.uk, maarten.lankhorst@linux.intel.com, mripard@kernel.org, l.stach@pengutronix.de, christian.gmeiner@gmail.com, inki.dae@samsung.com, jy0922.shim@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, kgene@kernel.org, krzk@kernel.org, patrik.r.jakobsson@gmail.com, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, chunkuang.hu@kernel.org, p.zabel@pengutronix.de, matthias.bgg@gmail.com, robdclark@gmail.com, sean@poorly.run, bskeggs@redhat.com, tomi.valkeinen@ti.com, eric@anholt.net, hjc@rock-chips.com, heiko@sntech.de, thierry.reding@gmail.com, jonathanh@nvidia.com, rodrigosiqueiramelo@gmail.com, hamohammed.sa@gmail.com, oleksandr_andrushchenko@epam.com, hyun.kwon@xilinx.com, laurent.pinchart@ideasonboard.com, michal.simek@xilinx.com, sumit.semwal@linaro.org, evan.quan@amd.com, Hawking.Zhang@amd.com, tianci.yin@amd.com, marek.olsak@amd.com, hdegoede@redhat.com, andrey.grodzovsky@amd.com, Felix.Kuehling@amd.com, xinhui.pan@amd.com, aaron.liu@amd.com, nirmoy.das@amd.com, chris@chris-wilson.co.uk, matthew.auld@intel.com, tvrtko.ursulin@linux.intel.com, andi.shyti@intel.com, sam@ravnborg.org, miaoqinglang@huawei.com, emil.velikov@collabora.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-tegra@vger.kernel.org, xen-devel@lists.xenproject.org Subject: Re: [PATCH v2 21/21] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver Message-ID: <20200916121227.GP438822@phenom.ffwll.local> References: <20200915145958.19993-1-tzimmermann@suse.de> <20200915145958.19993-22-tzimmermann@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200915145958.19993-22-tzimmermann@suse.de> X-Operating-System: Linux phenom 5.7.0-1-amd64 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69C62C433E2 for ; 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Wed, 16 Sep 2020 05:12:31 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id z15sm32021991wrv.94.2020.09.16.05.12.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 05:12:30 -0700 (PDT) Date: Wed, 16 Sep 2020 14:12:27 +0200 From: Daniel Vetter To: Thomas Zimmermann Subject: Re: [PATCH v2 21/21] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver Message-ID: <20200916121227.GP438822@phenom.ffwll.local> References: <20200915145958.19993-1-tzimmermann@suse.de> <20200915145958.19993-22-tzimmermann@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200915145958.19993-22-tzimmermann@suse.de> X-Operating-System: Linux phenom 5.7.0-1-amd64 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200916_081233_214801_83E45CB8 X-CRM114-Status: GOOD ( 41.70 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: hamohammed.sa@gmail.com, heiko@sntech.de, andrey.grodzovsky@amd.com, airlied@linux.ie, nouveau@lists.freedesktop.org, joonas.lahtinen@linux.intel.com, dri-devel@lists.freedesktop.org, michal.simek@xilinx.com, eric@anholt.net, thierry.reding@gmail.com, robdclark@gmail.com, krzk@kernel.org, sam@ravnborg.org, sumit.semwal@linaro.org, emil.velikov@collabora.com, linux-samsung-soc@vger.kernel.org, jy0922.shim@samsung.com, oleksandr_andrushchenko@epam.com, tomi.valkeinen@ti.com, linux-tegra@vger.kernel.org, linux@armlinux.org.uk, patrik.r.jakobsson@gmail.com, jonathanh@nvidia.com, linux-rockchip@lists.infradead.org, kgene@kernel.org, bskeggs@redhat.com, xen-devel@lists.xenproject.org, miaoqinglang@huawei.com, intel-gfx@lists.freedesktop.org, matthew.auld@intel.com, chunkuang.hu@kernel.org, andi.shyti@intel.com, daniel@ffwll.ch, linux-arm-msm@vger.kernel.org, marek.olsak@amd.com, tianci.yin@amd.com, maarten.lankhorst@linux.intel.com, etnaviv@lists.freedesktop.org, jani.nikula@linux.intel.com, inki.dae@samsung.com, hdegoede@redhat.com, christian.gmeiner@gmail.com, linux-mediatek@lists.infradead.org, mripard@kernel.org, rodrigo.vivi@intel.com, matthias.bgg@gmail.com, evan.quan@amd.com, sean@poorly.run, linux-arm-kernel@lists.infradead.org, tvrtko.ursulin@linux.intel.com, amd-gfx@lists.freedesktop.org, laurent.pinchart@ideasonboard.com, hyun.kwon@xilinx.com, rodrigosiqueiramelo@gmail.com, aaron.liu@amd.com, Felix.Kuehling@amd.com, xinhui.pan@amd.com, sw0312.kim@samsung.com, hjc@rock-chips.com, chris@chris-wilson.co.uk, kyungmin.park@samsung.com, nirmoy.das@amd.com, p.zabel@pengutronix.de, alexander.deucher@amd.com, Hawking.Zhang@amd.com, freedreno@lists.freedesktop.org, christian.koenig@amd.com, l.stach@pengutronix.de Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 05E4BC2BB84 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH v2 21/21] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver Date: Wed, 16 Sep 2020 14:12:27 +0200 Message-ID: <20200916121227.GP438822@phenom.ffwll.local> References: <20200915145958.19993-1-tzimmermann@suse.de> <20200915145958.19993-22-tzimmermann@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20200915145958.19993-22-tzimmermann-l3A5Bk7waGM@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: freedreno-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Freedreno" To: Thomas Zimmermann Cc: hamohammed.sa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, andrey.grodzovsky-5C7GfCeVMHo@public.gmane.org, airlied-cv59FeDIM0c@public.gmane.org, nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, joonas.lahtinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, michal.simek-gjFFaj9aHVfQT0dZR+AlfA@public.gmane.org, eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org, thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, robdclark-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, krzk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, sam-uyr5N9Q2VtJg9hUCZPvPmw@public.gmane.org, sumit.semwal-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, emil.velikov-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org, linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, jy0922.shim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, oleksandr_andrushchenko-uRwfk40T5oI@public.gmane.org, tomi.valkeinen-l0cyMroinI0@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org, patrik.r.jakobsson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, kgene-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, xen-devel-GuqFBffKawtpuQazS67q72D2FQJk+8+b@public.gmane.org, miaoqinglang-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, intel-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, matthew.auld-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, chunkuang.hu-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, andi.shyti-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, daniel-/w4YWyX8dFk@public.gmane.org, linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, marek.olsak@amd.c List-Id: nouveau.vger.kernel.org On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97A9AC43461 for ; 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Wed, 16 Sep 2020 05:12:31 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id z15sm32021991wrv.94.2020.09.16.05.12.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Sep 2020 05:12:30 -0700 (PDT) Date: Wed, 16 Sep 2020 14:12:27 +0200 From: Daniel Vetter To: Thomas Zimmermann Subject: Re: [PATCH v2 21/21] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver Message-ID: <20200916121227.GP438822@phenom.ffwll.local> References: <20200915145958.19993-1-tzimmermann@suse.de> <20200915145958.19993-22-tzimmermann@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200915145958.19993-22-tzimmermann@suse.de> X-Operating-System: Linux phenom 5.7.0-1-amd64 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: hamohammed.sa@gmail.com, airlied@linux.ie, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, michal.simek@xilinx.com, thierry.reding@gmail.com, krzk@kernel.org, sam@ravnborg.org, emil.velikov@collabora.com, linux-samsung-soc@vger.kernel.org, jy0922.shim@samsung.com, oleksandr_andrushchenko@epam.com, tomi.valkeinen@ti.com, linux-tegra@vger.kernel.org, linux@armlinux.org.uk, jonathanh@nvidia.com, linux-rockchip@lists.infradead.org, kgene@kernel.org, bskeggs@redhat.com, xen-devel@lists.xenproject.org, miaoqinglang@huawei.com, intel-gfx@lists.freedesktop.org, matthew.auld@intel.com, chunkuang.hu@kernel.org, andi.shyti@intel.com, linux-arm-msm@vger.kernel.org, marek.olsak@amd.com, tianci.yin@amd.com, etnaviv@lists.freedesktop.org, hdegoede@redhat.com, linux-mediatek@lists.infradead.org, rodrigo.vivi@intel.com, matthias.bgg@gmail.com, evan.quan@amd.com, sean@poorly.run, linux-arm-kernel@lists.infradead.org, tvrtko.ursulin@linux.intel.com, amd-gfx@lists.freedesktop.org, laurent.pinchart@ideasonboard.com, hyun.kwon@xilinx.com, rodrigosiqueiramelo@gmail.com, aaron.liu@amd.com, Felix.Kuehling@amd.com, xinhui.pan@amd.com, sw0312.kim@samsung.com, hjc@rock-chips.com, chris@chris-wilson.co.uk, kyungmin.park@samsung.com, nirmoy.das@amd.com, alexander.deucher@amd.com, Hawking.Zhang@amd.com, freedreno@lists.freedesktop.org, christian.koenig@amd.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Tue, Sep 15, 2020 at 04:59:58PM +0200, Thomas Zimmermann wrote: > Several GEM and PRIME callbacks have been deprecated in favor of > per-instance GEM object functions. Remove the callbacks as they are > now unused. The only exception is .gem_prime_mmap, which is still > in use by several drivers. > > What is also gone is gem_vm_ops in struct drm_driver. All drivers now > use struct drm_gem_object_funcs.vm_ops instead. > > While at it, the patch also improves error handling around calls > to .free and .get_sg_table callbacks. > > v2: > * update related TODO item (Sam) > > Signed-off-by: Thomas Zimmermann Nice work! Acked-by: Daniel Vetter > --- > Documentation/gpu/todo.rst | 7 +-- > drivers/gpu/drm/drm_gem.c | 35 +++--------- > drivers/gpu/drm/drm_gem_cma_helper.c | 6 +- > drivers/gpu/drm/drm_prime.c | 17 +++--- > include/drm/drm_drv.h | 85 ++-------------------------- > 5 files changed, 25 insertions(+), 125 deletions(-) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index b0ea17da8ff6..0fc6bc222392 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -289,11 +289,8 @@ struct drm_gem_object_funcs > --------------------------- > > GEM objects can now have a function table instead of having the callbacks on the > -DRM driver struct. This is now the preferred way and drivers can be moved over. > - > -We also need a 2nd version of the CMA define that doesn't require the > -vmapping to be present (different hook for prime importing). Plus this needs to > -be rolled out to all drivers using their own implementations, too. > +DRM driver struct. This is now the preferred way. Callbacks in drivers have been > +converted, except for struct drm_driver.gem_prime_mmap. > > Level: Intermediate > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 19d73868490e..96945bed8291 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -247,12 +247,9 @@ drm_gem_object_release_handle(int id, void *ptr, void *data) > { > struct drm_file *file_priv = data; > struct drm_gem_object *obj = ptr; > - struct drm_device *dev = obj->dev; > > if (obj->funcs && obj->funcs->close) > obj->funcs->close(obj, file_priv); > - else if (dev->driver->gem_close_object) > - dev->driver->gem_close_object(obj, file_priv); > > drm_gem_remove_prime_handles(obj, file_priv); > drm_vma_node_revoke(&obj->vma_node, file_priv); > @@ -407,10 +404,6 @@ drm_gem_handle_create_tail(struct drm_file *file_priv, > ret = obj->funcs->open(obj, file_priv); > if (ret) > goto err_revoke; > - } else if (dev->driver->gem_open_object) { > - ret = dev->driver->gem_open_object(obj, file_priv); > - if (ret) > - goto err_revoke; > } > > *handlep = handle; > @@ -982,12 +975,11 @@ drm_gem_object_free(struct kref *kref) > { > struct drm_gem_object *obj = > container_of(kref, struct drm_gem_object, refcount); > - struct drm_device *dev = obj->dev; > > - if (obj->funcs) > - obj->funcs->free(obj); > - else if (dev->driver->gem_free_object_unlocked) > - dev->driver->gem_free_object_unlocked(obj); > + if (drm_WARN_ON_ONCE(obj->dev, !obj->funcs || !obj->funcs->free)) > + return; > + > + obj->funcs->free(obj); > } > EXPORT_SYMBOL(drm_gem_object_free); > > @@ -1049,9 +1041,9 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * @obj_size: the object size to be mapped, in bytes > * @vma: VMA for the area to be mapped > * > - * Set up the VMA to prepare mapping of the GEM object using the gem_vm_ops > - * provided by the driver. Depending on their requirements, drivers can either > - * provide a fault handler in their gem_vm_ops (in which case any accesses to > + * Set up the VMA to prepare mapping of the GEM object using the GEM object's > + * vm_ops. Depending on their requirements, GEM objects can either > + * provide a fault handler in their vm_ops (in which case any accesses to > * the object will be trapped, to perform migration, GTT binding, surface > * register allocation, or performance monitoring), or mmap the buffer memory > * synchronously after calling drm_gem_mmap_obj. > @@ -1065,12 +1057,11 @@ EXPORT_SYMBOL(drm_gem_vm_close); > * callers must verify access restrictions before calling this helper. > * > * Return 0 or success or -EINVAL if the object size is smaller than the VMA > - * size, or if no gem_vm_ops are provided. > + * size, or if no vm_ops are provided. > */ > int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > struct vm_area_struct *vma) > { > - struct drm_device *dev = obj->dev; > int ret; > > /* Check for valid size. */ > @@ -1095,8 +1086,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, > } else { > if (obj->funcs && obj->funcs->vm_ops) > vma->vm_ops = obj->funcs->vm_ops; > - else if (dev->driver->gem_vm_ops) > - vma->vm_ops = dev->driver->gem_vm_ops; > else { > drm_gem_object_put(obj); > return -EINVAL; > @@ -1206,8 +1195,6 @@ int drm_gem_pin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->pin) > return obj->funcs->pin(obj); > - else if (obj->dev->driver->gem_prime_pin) > - return obj->dev->driver->gem_prime_pin(obj); > else > return 0; > } > @@ -1216,8 +1203,6 @@ void drm_gem_unpin(struct drm_gem_object *obj) > { > if (obj->funcs && obj->funcs->unpin) > obj->funcs->unpin(obj); > - else if (obj->dev->driver->gem_prime_unpin) > - obj->dev->driver->gem_prime_unpin(obj); > } > > void *drm_gem_vmap(struct drm_gem_object *obj) > @@ -1226,8 +1211,6 @@ void *drm_gem_vmap(struct drm_gem_object *obj) > > if (obj->funcs && obj->funcs->vmap) > vaddr = obj->funcs->vmap(obj); > - else if (obj->dev->driver->gem_prime_vmap) > - vaddr = obj->dev->driver->gem_prime_vmap(obj); > else > vaddr = ERR_PTR(-EOPNOTSUPP); > > @@ -1244,8 +1227,6 @@ void drm_gem_vunmap(struct drm_gem_object *obj, void *vaddr) > > if (obj->funcs && obj->funcs->vunmap) > obj->funcs->vunmap(obj, vaddr); > - else if (obj->dev->driver->gem_prime_vunmap) > - obj->dev->driver->gem_prime_vunmap(obj, vaddr); > } > > /** > diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c > index 822edeadbab3..209202257cc2 100644 > --- a/drivers/gpu/drm/drm_gem_cma_helper.c > +++ b/drivers/gpu/drm/drm_gem_cma_helper.c > @@ -419,7 +419,7 @@ EXPORT_SYMBOL(drm_gem_cma_print_info); > * > * This function exports a scatter/gather table suitable for PRIME usage by > * calling the standard DMA mapping API. Drivers using the CMA helpers should > - * set this as their &drm_driver.gem_prime_get_sg_table callback. > + * set this as their &drm_gem_object_funcs.get_sg_table callback. > * > * Returns: > * A pointer to the scatter/gather table of pinned pages or NULL on failure. > @@ -542,7 +542,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap); > * virtual address space. Since the CMA buffers are already mapped into the > * kernel virtual address space this simply returns the cached virtual > * address. Drivers using the CMA helpers should set this as their DRM > - * driver's &drm_driver.gem_prime_vmap callback. > + * driver's &drm_gem_object_funcs.vmap callback. > * > * Returns: > * The kernel virtual address of the CMA GEM object's backing store. > @@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap); > * This function removes a buffer exported via DRM PRIME from the kernel's > * virtual address space. This is a no-op because CMA buffers cannot be > * unmapped from kernel space. Drivers using the CMA helpers should set this > - * as their &drm_driver.gem_prime_vunmap callback. > + * as their &drm_gem_object_funcs.vunmap callback. > */ > void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr) > { > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 8a6a3c99b7d8..1cffb004d3c8 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -386,10 +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)) { > /* normally the created dma-buf takes ownership of the ref, > * but if that fails then drop the ref > @@ -419,7 +415,7 @@ 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, > @@ -616,15 +612,18 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach, > enum dma_data_direction dir) > { > struct drm_gem_object *obj = attach->dmabuf->priv; > - struct sg_table *sgt; > + struct sg_table *sgt = NULL; > > if (WARN_ON(dir == DMA_NONE)) > return ERR_PTR(-EINVAL); > > - if (obj->funcs) > + if (obj->funcs && obj->funcs->get_sg_table) > sgt = obj->funcs->get_sg_table(obj); > - else > - sgt = obj->dev->driver->gem_prime_get_sg_table(obj); > + > + if (!sgt) > + return ERR_PTR(-EINVAL); > + else if (IS_ERR(sgt)) > + return sgt; > > if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, > DMA_ATTR_SKIP_CPU_SYNC)) { > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index 9b11a2f0babc..240b0eab8018 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -36,10 +36,12 @@ struct drm_file; > struct drm_gem_object; > struct drm_master; > struct drm_minor; > +struct dma_buf; > struct dma_buf_attachment; > struct drm_display_mode; > struct drm_mode_create_dumb; > struct drm_printer; > +struct sg_table; > > /** > * enum drm_driver_feature - feature flags > @@ -326,32 +328,6 @@ struct drm_driver { > */ > void (*debugfs_init)(struct drm_minor *minor); > > - /** > - * @gem_free_object_unlocked: deconstructor for drm_gem_objects > - * > - * This is deprecated and should not be used by new drivers. Use > - * &drm_gem_object_funcs.free instead. > - */ > - void (*gem_free_object_unlocked) (struct drm_gem_object *obj); > - > - /** > - * @gem_open_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.open. > - * > - * Driver hook called upon gem handle creation > - */ > - int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); > - > - /** > - * @gem_close_object: > - * > - * This callback is deprecated in favour of &drm_gem_object_funcs.close. > - * > - * Driver hook called upon gem handle release > - */ > - void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); > - > /** > * @gem_create_object: constructor for gem objects > * > @@ -360,6 +336,7 @@ struct drm_driver { > */ > struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, > size_t size); > + > /** > * @prime_handle_to_fd: > * > @@ -382,14 +359,7 @@ struct drm_driver { > */ > int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, > int prime_fd, uint32_t *handle); > - /** > - * @gem_prime_export: > - * > - * Export hook for GEM drivers. Deprecated in favour of > - * &drm_gem_object_funcs.export. > - */ > - struct dma_buf * (*gem_prime_export)(struct drm_gem_object *obj, > - int flags); > + > /** > * @gem_prime_import: > * > @@ -399,29 +369,6 @@ struct drm_driver { > */ > struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, > struct dma_buf *dma_buf); > - > - /** > - * @gem_prime_pin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.pin. > - */ > - int (*gem_prime_pin)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_unpin: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.unpin. > - */ > - void (*gem_prime_unpin)(struct drm_gem_object *obj); > - > - > - /** > - * @gem_prime_get_sg_table: > - * > - * Deprecated hook in favour of &drm_gem_object_funcs.get_sg_table. > - */ > - struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); > - > /** > * @gem_prime_import_sg_table: > * > @@ -432,22 +379,6 @@ struct drm_driver { > struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt); > - /** > - * @gem_prime_vmap: > - * > - * Deprecated vmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vmap instead. > - */ > - void *(*gem_prime_vmap)(struct drm_gem_object *obj); > - > - /** > - * @gem_prime_vunmap: > - * > - * Deprecated vunmap hook for GEM drivers. Please use > - * &drm_gem_object_funcs.vunmap instead. > - */ > - void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); > - > /** > * @gem_prime_mmap: > * > @@ -522,14 +453,6 @@ struct drm_driver { > struct drm_device *dev, > uint32_t handle); > > - /** > - * @gem_vm_ops: Driver private ops for this object > - * > - * For GEM drivers this is deprecated in favour of > - * &drm_gem_object_funcs.vm_ops. > - */ > - const struct vm_operations_struct *gem_vm_ops; > - > /** @major: driver major number */ > int major; > /** @minor: driver minor number */ > -- > 2.28.0 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel