From patchwork Thu Aug 13 08:36:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 11712081 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 27BE1618 for ; Thu, 13 Aug 2020 08:37:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 150072078B for ; Thu, 13 Aug 2020 08:37:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726641AbgHMIhO (ORCPT ); Thu, 13 Aug 2020 04:37:14 -0400 Received: from mx2.suse.de ([195.135.220.15]:58806 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726784AbgHMIhL (ORCPT ); Thu, 13 Aug 2020 04:37:11 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1101CAF99; Thu, 13 Aug 2020 08:37:31 +0000 (UTC) From: Thomas Zimmermann To: 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, abdiel.janulgue@linux.intel.com, tvrtko.ursulin@linux.intel.com, andi.shyti@intel.com, sam@ravnborg.org, miaoqinglang@huawei.com, emil.velikov@collabora.com Cc: 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, Thomas Zimmermann Subject: [PATCH 20/20] drm: Remove obsolete GEM and PRIME callbacks from struct drm_driver Date: Thu, 13 Aug 2020 10:36:44 +0200 Message-Id: <20200813083644.31711-21-tzimmermann@suse.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200813083644.31711-1-tzimmermann@suse.de> References: <20200813083644.31711-1-tzimmermann@suse.de> MIME-Version: 1.0 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 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. Signed-off-by: Thomas Zimmermann --- 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 ++-------------------------- 4 files changed, 23 insertions(+), 120 deletions(-) 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 1693aa7c14b5..9a87639e7008 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 7116abc1a04e..8b325bf6cef4 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 @@ -327,32 +329,6 @@ 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 * @@ -361,6 +337,7 @@ struct drm_driver { */ struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, size_t size); + /** * @prime_handle_to_fd: * @@ -383,14 +360,7 @@ 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: * @@ -400,29 +370,6 @@ 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: * @@ -433,22 +380,6 @@ 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: * @@ -523,14 +454,6 @@ 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 */