Re: [PATCH v2 09/21] drm/nouveau: Introduce GEM object functions

Daniel Vetter
2020-09-16T21:08:08Z

On Tue, Sep 15, 2020 at 04:59:46PM +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 nouveau.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Hm ttm and gem mmap world still quite disjoint ... Anyway that's an
entirely different thing.

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

> ---
> drivers/gpu/drm/nouveau/nouveau_drm.c | 9 ---------
> drivers/gpu/drm/nouveau/nouveau_gem.c | 13 +++++++++++++
> drivers/gpu/drm/nouveau/nouveau_gem.h | 2 ++
> drivers/gpu/drm/nouveau/nouveau_prime.c | 2 ++
> 4 files changed, 17 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
> index 42fc5c813a9b..72640bca1617 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_drm.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
> @@ -1207,16 +1207,7 @@ driver_stub = {
>
> .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> - .gem_prime_pin = nouveau_gem_prime_pin,
> - .gem_prime_unpin = nouveau_gem_prime_unpin,
> - .gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
> .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
> - .gem_prime_vmap = nouveau_gem_prime_vmap,
> - .gem_prime_vunmap = nouveau_gem_prime_vunmap,
> -
> - .gem_free_object_unlocked = nouveau_gem_object_del,
> - .gem_open_object = nouveau_gem_object_open,
> - .gem_close_object = nouveau_gem_object_close,
>
> .dumb_create = nouveau_display_dumb_create,
> .dumb_map_offset = nouveau_display_dumb_map_offset,
> diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
> index 89adadf4706b..28e0cbb00876 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_gem.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
> @@ -169,6 +169,17 @@ nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
> ttm_bo_unreserve(&nvbo->bo);
> }
>
> +const struct drm_gem_object_funcs nouveau_gem_object_funcs = {
> + .free = nouveau_gem_object_del,
> + .open = nouveau_gem_object_open,
> + .close = nouveau_gem_object_close,
> + .pin = nouveau_gem_prime_pin,
> + .unpin = nouveau_gem_prime_unpin,
> + .get_sg_table = nouveau_gem_prime_get_sg_table,
> + .vmap = nouveau_gem_prime_vmap,
> + .vunmap = nouveau_gem_prime_vunmap,
> +};
> +
> int
> nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
> uint32_t tile_mode, uint32_t tile_flags,
> @@ -186,6 +197,8 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
> if (IS_ERR(nvbo))
> return PTR_ERR(nvbo);
>
> + nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
> +
> /* Initialize the embedded gem-object. We return a single gem-reference
> * to the caller, instead of a normal nouveau_bo ttm reference. */
> ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
> diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.h b/drivers/gpu/drm/nouveau/nouveau_gem.h
> index 978e07591990..b35c180322e2 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_gem.h
> +++ b/drivers/gpu/drm/nouveau/nouveau_gem.h
> @@ -5,6 +5,8 @@
> #include "nouveau_drv.h"
> #include "nouveau_bo.h"
>
> +extern const struct drm_gem_object_funcs nouveau_gem_object_funcs;
> +
> static inline struct nouveau_bo *
> nouveau_gem_object(struct drm_gem_object *gem)
> {
> diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
> index b2ecb91f8ddc..a8264aebf3d4 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_prime.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
> @@ -77,6 +77,8 @@ struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
>
> nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
>
> + nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
> +
> /* Initialize the embedded gem-object. We return a single gem-reference
> * to the caller, instead of a normal nouveau_bo ttm reference. */
> ret = drm_gem_object_init(dev, &nvbo->bo.base, size);
> --
> 2.28.0
>

--
Daniel Vetter
Software Engineer, Intel Corporation