Re: [PATCH v2 01/21] drm/amdgpu: Introduce GEM object functions

["Christian König" <christian.koenig@amd.com>]

Am 15.09.20 um 16:59 schrieb Thomas Zimmermann:
> GEM object functions deprecate several similar callback interfaces in
> struct drm_driver. This patch replaces the per-driver callbacks with
> per-instance callbacks in amdgpu. The only exception is gem_prime_mmap,
> which is non-trivial to convert.
>
> v2:
> 	* move object-function instance to amdgpu_gem.c (Christian)
> 	* set callbacks in amdgpu_gem_object_create() (Christian)
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    |  6 ------
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c    | 23 +++++++++++++++++-----
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h    |  5 -----
>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c |  1 +
>   4 files changed, 19 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index 6edde2b9e402..840ca8f9c1e1 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -1505,19 +1505,13 @@ static struct drm_driver kms_driver = {
>   	.lastclose = amdgpu_driver_lastclose_kms,
>   	.irq_handler = amdgpu_irq_handler,
>   	.ioctls = amdgpu_ioctls_kms,
> -	.gem_free_object_unlocked = amdgpu_gem_object_free,
> -	.gem_open_object = amdgpu_gem_object_open,
> -	.gem_close_object = amdgpu_gem_object_close,
>   	.dumb_create = amdgpu_mode_dumb_create,
>   	.dumb_map_offset = amdgpu_mode_dumb_mmap,
>   	.fops = &amdgpu_driver_kms_fops,
>   
>   	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
>   	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> -	.gem_prime_export = amdgpu_gem_prime_export,
>   	.gem_prime_import = amdgpu_gem_prime_import,
> -	.gem_prime_vmap = amdgpu_gem_prime_vmap,
> -	.gem_prime_vunmap = amdgpu_gem_prime_vunmap,
>   	.gem_prime_mmap = amdgpu_gem_prime_mmap,
>   
>   	.name = DRIVER_NAME,
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> index aa7f230c71bf..aeecd5dc3ce4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> @@ -36,9 +36,12 @@
>   
>   #include "amdgpu.h"
>   #include "amdgpu_display.h"
> +#include "amdgpu_dma_buf.h"
>   #include "amdgpu_xgmi.h"
>   
> -void amdgpu_gem_object_free(struct drm_gem_object *gobj)
> +static const struct drm_gem_object_funcs amdgpu_gem_object_funcs;
> +
> +static void amdgpu_gem_object_free(struct drm_gem_object *gobj)
>   {
>   	struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
>   
> @@ -87,6 +90,7 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
>   		return r;
>   	}
>   	*obj = &bo->tbo.base;
> +	(*obj)->funcs = &amdgpu_gem_object_funcs;
>   
>   	return 0;
>   }
> @@ -119,8 +123,8 @@ void amdgpu_gem_force_release(struct amdgpu_device *adev)
>    * Call from drm_gem_handle_create which appear in both new and open ioctl
>    * case.
>    */
> -int amdgpu_gem_object_open(struct drm_gem_object *obj,
> -			   struct drm_file *file_priv)
> +static int amdgpu_gem_object_open(struct drm_gem_object *obj,
> +				  struct drm_file *file_priv)
>   {
>   	struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
>   	struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
> @@ -152,8 +156,8 @@ int amdgpu_gem_object_open(struct drm_gem_object *obj,
>   	return 0;
>   }
>   
> -void amdgpu_gem_object_close(struct drm_gem_object *obj,
> -			     struct drm_file *file_priv)
> +static void amdgpu_gem_object_close(struct drm_gem_object *obj,
> +				    struct drm_file *file_priv)
>   {
>   	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
>   	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> @@ -211,6 +215,15 @@ void amdgpu_gem_object_close(struct drm_gem_object *obj,
>   	ttm_eu_backoff_reservation(&ticket, &list);
>   }
>   
> +static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
> +	.free = amdgpu_gem_object_free,
> +	.open = amdgpu_gem_object_open,
> +	.close = amdgpu_gem_object_close,
> +	.export = amdgpu_gem_prime_export,
> +	.vmap = amdgpu_gem_prime_vmap,
> +	.vunmap = amdgpu_gem_prime_vunmap,
> +};
> +
>   /*
>    * GEM ioctls.
>    */
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
> index e0f025dd1b14..637bf51dbf06 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
> @@ -33,11 +33,6 @@
>   #define AMDGPU_GEM_DOMAIN_MAX		0x3
>   #define gem_to_amdgpu_bo(gobj) container_of((gobj), struct amdgpu_bo, tbo.base)
>   
> -void amdgpu_gem_object_free(struct drm_gem_object *obj);
> -int amdgpu_gem_object_open(struct drm_gem_object *obj,
> -				struct drm_file *file_priv);
> -void amdgpu_gem_object_close(struct drm_gem_object *obj,
> -				struct drm_file *file_priv);
>   unsigned long amdgpu_gem_timeout(uint64_t timeout_ns);
>   
>   /*
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index ac043baac05d..c4e82a8fa53f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -561,6 +561,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
>   	bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
>   	if (bo == NULL)
>   		return -ENOMEM;
> +

The newline is not unrelated.

Apart from that the patch is Reviewed-by: Christian König 
<christian.koenig@amd.com>.

But I think we need some smoke testing of it.

Christian.

>   	drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base, size);
>   	INIT_LIST_HEAD(&bo->shadow_list);
>   	bo->vm_bo = NULL;