Re: [PATCH v2 14/23] drm/meson: Use GEM CMA object functions

[Neil Armstrong]

On 03/06/2020 10:31, Thomas Zimmermann wrote:
> The meson driver uses the default implementation for CMA functions; except
> for the .dumb_create callback. The DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE()
> macro now sets these defaults and .dumb_create in struct drm_driver.
> 
> By using DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE() the driver now
> sets .gem_create_object to drm_cma_gem_create_object_default_funcs(),
> which sets CMA GEM object functions. GEM object functions implement the
> rsp operations where possible. Corresponding interfaces in struct drm_driver
> are cleared. Prime import now uses drm_gem_cma_prime_import_sg_table_vmap(),
> which maps the imported buffer upon import. Mmap operations are performed
> by drm_gem_prime_mmap(), which goes through GEM file operations. These
> changes have been part of the aspeed driver for some time.
> 
> v2:
>   * update for DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE
> 
> Signed-off-by: Thomas Zimmermann 
> Acked-by: Emil Velikov 
> ---
>  drivers/gpu/drm/meson/meson_drv.c | 15 ++-
>  1 file changed, 2 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/gpu/drm/meson/meson_drv.c 
> b/drivers/gpu/drm/meson/meson_drv.c
> index 4c5aafcec7991..8b9c8dd788c41 100644
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -96,19 +96,8 @@ static struct drm_driver meson_driver = {
>   /* IRQ */
>   .irq_handler= meson_irq,
>  
> - /* PRIME Ops */
> - .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> - .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> - .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
> - .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
> - .gem_prime_vmap = drm_gem_cma_prime_vmap,
> - .gem_prime_vunmap   = drm_gem_cma_prime_vunmap,
> - .gem_prime_mmap = drm_gem_cma_prime_mmap,
> -
> - /* GEM Ops */
> - .dumb_create= meson_dumb_create,
> - .gem_free_object_unlocked = drm_gem_cma_free_object,
> - .gem_vm_ops = &drm_gem_cma_vm_ops,
> + /* CMA Ops */
> + DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(meson_dumb_create),
>  
>   /* Misc */
>   .fops   = &fops,
> 

Acked-by: Neil Armstrong 
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[PATCH v2 14/23] drm/meson: Use GEM CMA object functions

[Thomas Zimmermann]

The meson driver uses the default implementation for CMA functions; except
for the .dumb_create callback. The DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE()
macro now sets these defaults and .dumb_create in struct drm_driver.

By using DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE() the driver now
sets .gem_create_object to drm_cma_gem_create_object_default_funcs(),
which sets CMA GEM object functions. GEM object functions implement the
rsp operations where possible. Corresponding interfaces in struct drm_driver
are cleared. Prime import now uses drm_gem_cma_prime_import_sg_table_vmap(),
which maps the imported buffer upon import. Mmap operations are performed
by drm_gem_prime_mmap(), which goes through GEM file operations. These
changes have been part of the aspeed driver for some time.

v2:
* update for DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE

Signed-off-by: Thomas Zimmermann 
Acked-by: Emil Velikov 
---
 drivers/gpu/drm/meson/meson_drv.c | 15 ++-
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_drv.c 
b/drivers/gpu/drm/meson/meson_drv.c
index 4c5aafcec7991..8b9c8dd788c41 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -96,19 +96,8 @@ static struct drm_driver meson_driver = {
/* IRQ */
.irq_handler= meson_irq,
 
-   /* PRIME Ops */
-   .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
-   .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
-   .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
-   .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
-   .gem_prime_vmap = drm_gem_cma_prime_vmap,
-   .gem_prime_vunmap   = drm_gem_cma_prime_vunmap,
-   .gem_prime_mmap = drm_gem_cma_prime_mmap,
-
-   /* GEM Ops */
-   .dumb_create= meson_dumb_create,
-   .gem_free_object_unlocked = drm_gem_cma_free_object,
-   .gem_vm_ops = &drm_gem_cma_vm_ops,
+   /* CMA Ops */
+   DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(meson_dumb_create),
 
/* Misc */
.fops   = &fops,
-- 
2.26.2

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