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Message-ID: <20240720071606.27930-1-yunfei.dong@mediatek.com>
Date: Sat, 20 Jul 2024 15:15:38 +0800
From: Yunfei Dong <yunfei.dong@...iatek.com>
To: Jeffrey Kardatzke <jkardatzke@...gle.com>,
Nícolas F . R . A . Prado
<nfraprado@...labora.com>, Nathan Hebert <nhebert@...omium.org>, "Nicolas
Dufresne" <nicolas.dufresne@...labora.com>, Hans Verkuil
<hverkuil-cisco@...all.nl>, AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>, Benjamin Gaignard
<benjamin.gaignard@...labora.com>, Sebastian Fricke
<sebastian.fricke@...labora.com>, Tomasz Figa <tfiga@...omium.org>, "Mauro
Carvalho Chehab" <mchehab@...nel.org>, Marek Szyprowski
<m.szyprowski@...sung.com>
CC: Chen-Yu Tsai <wenst@...omium.org>, Yong Wu <yong.wu@...iatek.com>,
"Hsin-Yi Wang" <hsinyi@...omium.org>, Fritz Koenig <frkoenig@...omium.org>,
"Daniel Vetter" <daniel@...ll.ch>, Steve Cho <stevecho@...omium.org>, Yunfei
Dong <yunfei.dong@...iatek.com>, Sumit Semwal <sumit.semwal@...aro.org>,
"Brian Starkey" <Brian.Starkey@....com>, John Stultz <jstultz@...gle.com>, "T
. J . Mercier" <tjmercier@...gle.com>, Christian König
<christian.koenig@....com>, Matthias Brugger <matthias.bgg@...il.com>,
<linux-media@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v7 00/28] media: mediatek: add driver to support secure video decoder
The patch series used to enable secure video playback (SVP) on MediaTek
hardware in the Linux kernel.
Memory Definitions:
secure memory - Memory allocated in the TEE (Trusted Execution
Environment) which is inaccessible in the REE (Rich Execution
Environment, i.e. linux kernel/user space).
secure handle - Integer value which acts as reference to 'secure
memory'. Used in communication between TEE and REE to reference
'secure memory'.
secure buffer - 'secure memory' that is used to store decrypted,
compressed video or for other general purposes in the TEE.
secure surface - 'secure memory' that is used to store graphic buffers.
Memory Usage in SVP:
The overall flow of SVP starts with encrypted video coming in from an
outside source into the REE. The REE will then allocate a 'secure
buffer' and send the corresponding 'secure handle' along with the
encrypted, compressed video data to the TEE. The TEE will then decrypt
the video and store the result in the 'secure buffer'. The REE will
then allocate a 'secure surface'. The REE will pass the 'secure
handles' for both the 'secure buffer' and 'secure surface' into the
TEE for video decoding. The video decoder HW will then decode the
contents of the 'secure buffer' and place the result in the 'secure
surface'. The REE will then attach the 'secure surface' to the overlay
plane for rendering of the video.
Everything relating to ensuring security of the actual contents of the
'secure buffer' and 'secure surface' is out of scope for the REE and
is the responsibility of the TEE.
This patch series is consists of four parts. The first is from Jeffrey,
adding secure memory flag in v4l2 framework to support request secure
buffer.
The second and third parts are from John and T.J, adding some heap
interfaces, then our kernel users could allocate buffer from special
heap. The patch v1 is inside below dmabuf link.
https://lore.kernel.org/linux-mediatek/20230911023038.30649-1-yong.wu@mediatek.com/
To avoid confusing, move them into vcodec patch set since we use the
new interfaces directly.
The last part is mediatek video decoder driver, adding tee interface and
decoder driver to support secure video playback.
This patch set depends on "dma-buf: heaps: Add restricted heap"[1]
[1] https://patchwork.kernel.org/project/linux-mediatek/list/?series=853380
---
Changed in v7:
- fix many reviewer's comments
- build optee driver to ko
- support h264 svp and non svp vsi
Changed in v6:
- fix unreasonable logic for patch 2/3/23
- add to support vp9 for patch 24
Changed in v5:
- fix merge conflict when rebase to latest media stage for patch 1/2
- change allocate memory type to cma for patch 12
- add to support av1 for patch 23
Changed in v4:
- change the driver according to maintainer advice for patch 1/2/3/4
- replace secure with restricted for patch 1/2/3/4
- fix svp decoder error for patch 21
- add to support hevc for patch 22
Changed in v3:
- rewrite the cover-letter of this patch series
- disable irq for svp mode
- rebase the driver based on the latest media stage
Changed in v2:
- remove setting decoder mode and getting secure handle from decode
- add Jeffrey's patch
- add John and T.J's patch
- getting secure flag with request buffer
- fix some comments from patch v1
---
Jeffrey Kardatzke (2):
v4l2: add restricted memory flags
v4l2: handle restricted memory flags in queue setup
John Stultz (2):
dma-heap: Add proper kref handling on dma-buf heaps
dma-heap: Provide accessors so that in-kernel drivers can allocate
dmabufs from specific heaps
T.J. Mercier (1):
dma-buf: heaps: Deduplicate docs and adopt common format
Xiaoyong Lu (1):
media: mediatek: vcodec: support av1 svp decoder for mt8188
Yilong Zhou (1):
media: mediatek: vcodec: support vp9 svp decoder for mt8188
Yunfei Dong (21):
media: videobuf2: calculate restricted memory size
media: mediatek: vcodec: add tee client interface to communiate with
optee-os
media: mediatek: vcodec: build decoder OPTEE driver as module
media: mediatek: vcodec: allocate tee share memory
media: mediatek: vcodec: send share memory data to optee
media: mediatek: vcodec: initialize msg and vsi information
media: mediatek: vcodec: add interface to allocate/free secure memory
media: mediatek: vcodec: using shared memory as vsi address
media: mediatek: vcodec: add single allocation format
media: mediatek: vcodec: support single allocation format
media: mediatek: vcodec: support single allocation buffer
media: mediatek: vcodec: re-construct h264 driver to support svp mode
media: mediatek: vcodec: remove parse nal_info in kernel
media: mediatek: vcodec: disable wait interrupt for svp mode
media: mediatek: vcodec: support tee decoder
media: mediatek: vcodec: move vdec init interface to setup callback
media: mediatek: vcodec: support hevc svp for mt8188
media: mediatek: vcodec: remove vsi data from common interface
media: mediatek: vcodec: rename vsi to extend vsi
media: mediatek: vcodec: adding non extend struct
media: mediatek: vcodec: support extend h264 driver
.../userspace-api/media/v4l/buffer.rst | 10 +-
.../media/v4l/pixfmt-reserved.rst | 7 +
.../media/v4l/vidioc-reqbufs.rst | 6 +
drivers/dma-buf/dma-heap.c | 139 ++++-
.../media/common/videobuf2/videobuf2-core.c | 29 +
.../common/videobuf2/videobuf2-dma-contig.c | 34 +-
.../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
.../media/platform/mediatek/vcodec/Kconfig | 13 +
.../mediatek/vcodec/common/mtk_vcodec_util.c | 117 +++-
.../mediatek/vcodec/common/mtk_vcodec_util.h | 8 +-
.../platform/mediatek/vcodec/decoder/Makefile | 4 +
.../mediatek/vcodec/decoder/mtk_vcodec_dec.c | 152 +++--
.../vcodec/decoder/mtk_vcodec_dec_drv.c | 8 +
.../vcodec/decoder/mtk_vcodec_dec_drv.h | 11 +
.../vcodec/decoder/mtk_vcodec_dec_hw.c | 34 +-
.../vcodec/decoder/mtk_vcodec_dec_optee.c | 391 +++++++++++++
.../vcodec/decoder/mtk_vcodec_dec_optee.h | 198 +++++++
.../vcodec/decoder/mtk_vcodec_dec_pm.c | 6 +-
.../vcodec/decoder/mtk_vcodec_dec_stateless.c | 35 +-
.../vcodec/decoder/vdec/vdec_av1_req_lat_if.c | 104 ++--
.../decoder/vdec/vdec_h264_req_common.c | 18 +-
.../decoder/vdec/vdec_h264_req_multi_if.c | 536 +++++++++++++++++-
.../decoder/vdec/vdec_hevc_req_multi_if.c | 88 +--
.../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 101 ++--
.../mediatek/vcodec/decoder/vdec_drv_if.c | 4 +-
.../mediatek/vcodec/decoder/vdec_msg_queue.c | 9 +-
.../mediatek/vcodec/decoder/vdec_vpu_if.c | 51 +-
.../mediatek/vcodec/decoder/vdec_vpu_if.h | 4 +
drivers/media/v4l2-core/v4l2-common.c | 2 +
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/linux/dma-heap.h | 29 +-
include/media/videobuf2-core.h | 8 +-
include/uapi/linux/videodev2.h | 3 +
33 files changed, 1868 insertions(+), 296 deletions(-)
create mode 100644 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.c
create mode 100644 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.h
--
2.18.0
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