| Message ID | 20200915145958.19993-22-tzimmermann@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Convert all remaining drivers to GEM object functions | expand |
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 <tzimmermann@suse.de> Nice work! Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> > --- > 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 >
Am 15.09.20 um 16:59 schrieb Thomas Zimmermann: > 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 <tzimmermann@suse.de> > --- > 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); Oops, these two lines were not supposed to be removed. They'll return in v3 of the patchset. That will also fix the error report that was posted by the CI. [1] Best regards Thomas [1] https://lore.kernel.org/intel-gfx/160018797587.30601.1382075328491651866@emeril.freedesktop.org/ > 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 */ >
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 */
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 <tzimmermann@suse.de> --- 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(-)