[PATCH] drm/exynos: add DRM_EXYNOS_GEM_MAP ioctl

[Inki Dae]

Merged.

Thanks,
Inki Dae

2015년 10월 05일 12:04에 Joonyoung Shim 이(가) 쓴 글:
> The commit d931589c01a2 ("drm/exynos: remove DRM_EXYNOS_GEM_MAP_OFFSET
> ioctl") removed it same with the ioctl that this patch adds. The reason
> that removed DRM_EXYNOS_GEM_MAP_OFFSET was we could use
> DRM_IOCTL_MODE_MAP_DUMB. Both did exactly same thing.
>
> Now we again will revive it as DRM_EXYNOS_GEM_MAP because of render
> node. DRM_IOCTL_MODE_MAP_DUMB isn't permitted in render node.
>
> Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
> ---
>   drivers/gpu/drm/exynos/exynos_drm_drv.c |  2 ++
>   drivers/gpu/drm/exynos/exynos_drm_gem.c |  9 +++++++++
>   drivers/gpu/drm/exynos/exynos_drm_gem.h |  4 ++++
>   include/uapi/drm/exynos_drm.h           | 17 ++++++++++++++++-
>   4 files changed, 31 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> index f0a5839..8fd7201 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> @@ -404,6 +404,8 @@ static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
>   static const struct drm_ioctl_desc exynos_ioctls[] = {
>   	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
>   			DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
> +	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
> +			DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
>   	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
>   			DRM_UNLOCKED | DRM_RENDER_ALLOW),
>   	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
> index f1dcdd0..29f4875 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
> @@ -271,6 +271,15 @@ int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
>   	return 0;
>   }
>
> +int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data,
> +			     struct drm_file *file_priv)
> +{
> +	struct drm_exynos_gem_map *args = data;
> +
> +	return exynos_drm_gem_dumb_map_offset(file_priv, dev, args->handle,
> +					      &args->offset);
> +}
> +
>   dma_addr_t *exynos_drm_gem_get_dma_addr(struct drm_device *dev,
>   					unsigned int gem_handle,
>   					struct drm_file *filp)
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
> index 37ab8b2..0d0ab27 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
> +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
> @@ -73,6 +73,10 @@ struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev,
>   int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
>   				struct drm_file *file_priv);
>
> +/* get fake-offset of gem object that can be used with mmap. */
> +int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data,
> +			     struct drm_file *file_priv);
> +
>   /*
>    * get dma address from gem handle and this function could be used for
>    * other drivers such as 2d/3d acceleration drivers.
> diff --git a/include/uapi/drm/exynos_drm.h b/include/uapi/drm/exynos_drm.h
> index 5575ed1..18f0601 100644
> --- a/include/uapi/drm/exynos_drm.h
> +++ b/include/uapi/drm/exynos_drm.h
> @@ -33,6 +33,19 @@ struct drm_exynos_gem_create {
>   };
>
>   /**
> + * A structure for getting a fake-offset that can be used with mmap.
> + *
> + * @handle: handle of gem object.
> + * @reserved: just padding to be 64-bit aligned.
> + * @offset: a fake-offset of gem object.
> + */
> +struct drm_exynos_gem_map {
> +	__u32 handle;
> +	__u32 reserved;
> +	__u64 offset;
> +};
> +
> +/**
>    * A structure to gem information.
>    *
>    * @handle: a handle to gem object created.
> @@ -284,6 +297,7 @@ struct drm_exynos_ipp_cmd_ctrl {
>   };
>
>   #define DRM_EXYNOS_GEM_CREATE		0x00
> +#define DRM_EXYNOS_GEM_MAP		0x01
>   /* Reserved 0x03 ~ 0x05 for exynos specific gem ioctl */
>   #define DRM_EXYNOS_GEM_GET		0x04
>   #define DRM_EXYNOS_VIDI_CONNECTION	0x07
> @@ -301,7 +315,8 @@ struct drm_exynos_ipp_cmd_ctrl {
>
>   #define DRM_IOCTL_EXYNOS_GEM_CREATE		DRM_IOWR(DRM_COMMAND_BASE + \
>   		DRM_EXYNOS_GEM_CREATE, struct drm_exynos_gem_create)
> -
> +#define DRM_IOCTL_EXYNOS_GEM_MAP		DRM_IOWR(DRM_COMMAND_BASE + \
> +		DRM_EXYNOS_GEM_MAP, struct drm_exynos_gem_map)
>   #define DRM_IOCTL_EXYNOS_GEM_GET	DRM_IOWR(DRM_COMMAND_BASE + \
>   		DRM_EXYNOS_GEM_GET,	struct drm_exynos_gem_info)
>
>