Re: [PATCH v2 03/21] drm/etnaviv: Introduce GEM object functions

Daniel Vetter
2020-09-16T19:07:52Z

On Tue, Sep 15, 2020 at 04:59:40PM +0200, Thomas Zimmermann wrote:
> GEM object functions deprecate several similar callback interfaces in
> struct drm_driver. This patch replaces the per-driver callbacks with
> per-instance callbacks in etnaviv. The only exception is gem_prime_mmap,
> which is non-trivial to convert.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> ---
> drivers/gpu/drm/etnaviv/etnaviv_drv.c | 13 -------------
> drivers/gpu/drm/etnaviv/etnaviv_drv.h | 1 -
> drivers/gpu/drm/etnaviv/etnaviv_gem.c | 19 ++++++++++++++++++-
> 3 files changed, 18 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> index a9a3afaef9a1..aa270b79e585 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> @@ -468,12 +468,6 @@ static const struct drm_ioctl_desc etnaviv_ioctls[] = {
> ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
> };
>
> -static const struct vm_operations_struct vm_ops = {
> - .fault = etnaviv_gem_fault,
> - .open = drm_gem_vm_open,
> - .close = drm_gem_vm_close,
> -};
> -
> static const struct file_operations fops = {
> .owner = THIS_MODULE,
> .open = drm_open,
> @@ -490,16 +484,9 @@ static struct drm_driver etnaviv_drm_driver = {
> .driver_features = DRIVER_GEM | DRIVER_RENDER,
> .open = etnaviv_open,
> .postclose = etnaviv_postclose,
> - .gem_free_object_unlocked = etnaviv_gem_free_object,
> - .gem_vm_ops = &vm_ops,
> .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> - .gem_prime_pin = etnaviv_gem_prime_pin,
> - .gem_prime_unpin = etnaviv_gem_prime_unpin,
> - .gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
> .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
> - .gem_prime_vmap = etnaviv_gem_prime_vmap,
> - .gem_prime_vunmap = etnaviv_gem_prime_vunmap,
> .gem_prime_mmap = etnaviv_gem_prime_mmap,
> #ifdef CONFIG_DEBUG_FS
> .debugfs_init = etnaviv_debugfs_init,
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
> index 4d8dc9236e5f..914f0867ff71 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
> @@ -49,7 +49,6 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
> struct drm_file *file);
>
> int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma);
> -vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf);
> int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
> struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
> void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
> index ea19f1d27275..312e9d58d5a7 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
> @@ -171,7 +171,7 @@ int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma)
> return obj->ops->mmap(obj, vma);
> }
>
> -vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf)
> +static vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf)
> {
> struct vm_area_struct *vma = vmf->vma;
> struct drm_gem_object *obj = vma->vm_private_data;
> @@ -561,6 +561,22 @@ void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj)
> mutex_unlock(&priv->gem_lock);
> }
>
> +static const struct vm_operations_struct vm_ops = {
> + .fault = etnaviv_gem_fault,
> + .open = drm_gem_vm_open,
> + .close = drm_gem_vm_close,
> +};
> +
> +static const struct drm_gem_object_funcs etnaviv_gem_object_funcs = {
> + .free = etnaviv_gem_free_object,
> + .pin = etnaviv_gem_prime_pin,
> + .unpin = etnaviv_gem_prime_unpin,
> + .get_sg_table = etnaviv_gem_prime_get_sg_table,
> + .vmap = etnaviv_gem_prime_vmap,
> + .vunmap = etnaviv_gem_prime_vunmap,
> + .vm_ops = &vm_ops,
> +};

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> +
> static int etnaviv_gem_new_impl(struct drm_device *dev, u32 size, u32 flags,
> const struct etnaviv_gem_ops *ops, struct drm_gem_object **obj)
> {
> @@ -595,6 +611,7 @@ static int etnaviv_gem_new_impl(struct drm_device *dev, u32 size, u32 flags,
> INIT_LIST_HEAD(&etnaviv_obj->vram_list);
>
> *obj = &etnaviv_obj->base;
> + (*obj)->funcs = &etnaviv_gem_object_funcs;
>
> return 0;
> }
> --
> 2.28.0
>

--
Daniel Vetter
Software Engineer, Intel Corporation