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Message-ID: <70733fe5c919527796bd3d9735ced522bcdd7a25.camel@ndufresne.ca>
Subject: Re: [PATCH v5 1/9] drm/mediatek/uapi: Add
 DRM_MTK_GEM_CREATE_ENCRYPTED flag
From: Nicolas Dufresne <nicolas@ndufresne.ca>
To: Shawn Sung <shawn.sung@mediatek.com>, Chun-Kuang Hu
	 <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>, David Airlie
 <airlied@gmail.com>,  Daniel Vetter <daniel@ffwll.ch>, Matthias Brugger
 <matthias.bgg@gmail.com>, AngeloGioacchino Del Regno
 <angelogioacchino.delregno@collabora.com>, Maarten Lankhorst
 <maarten.lankhorst@linux.intel.com>, Maxime Ripard <mripard@kernel.org>, 
 Thomas Zimmermann <tzimmermann@suse.de>, Sumit Semwal
 <sumit.semwal@linaro.org>, Christian =?ISO-8859-1?Q?K=F6nig?=
 <christian.koenig@amd.com>, dri-devel@lists.freedesktop.org, 
 linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, 
 linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, 
 linaro-mm-sig@lists.linaro.org, "Jason-JH.Lin" <jason-jh.lin@mediatek.com>
Date: Tue, 16 Apr 2024 10:09:19 -0400
In-Reply-To: <20240403102701.369-2-shawn.sung@mediatek.com>
References: <20240403102701.369-1-shawn.sung@mediatek.com>
	 <20240403102701.369-2-shawn.sung@mediatek.com>
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Hi,

Le mercredi 03 avril 2024 =C3=A0 18:26 +0800, Shawn Sung a =C3=A9crit=C2=A0=
:
> From: "Jason-JH.Lin" <jason-jh.lin@mediatek.com>
>=20
> Add DRM_MTK_GEM_CREATE_ENCRYPTED flag to allow user to allocate

Is "ENCRYPTED" a proper naming ? My expectation is that this would hold dat=
a in
a PROTECTED memory region but that no cryptographic algorithm will be invol=
ved.

Nicolas

> a secure buffer to support secure video path feature.
>=20
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
> ---
>  include/uapi/drm/mediatek_drm.h | 1 +
>  1 file changed, 1 insertion(+)
>=20
> diff --git a/include/uapi/drm/mediatek_drm.h b/include/uapi/drm/mediatek_=
drm.h
> index b0dea00bacbc4..e9125de3a24ad 100644
> --- a/include/uapi/drm/mediatek_drm.h
> +++ b/include/uapi/drm/mediatek_drm.h
> @@ -54,6 +54,7 @@ struct drm_mtk_gem_map_off {
> =20
>  #define DRM_MTK_GEM_CREATE		0x00
>  #define DRM_MTK_GEM_MAP_OFFSET		0x01
> +#define DRM_MTK_GEM_CREATE_ENCRYPTED	0x02
> =20
>  #define DRM_IOCTL_MTK_GEM_CREATE	DRM_IOWR(DRM_COMMAND_BASE + \
>  		DRM_MTK_GEM_CREATE, struct drm_mtk_gem_create)