linux-kernel - [PATCH v4 00/12] misc: fastrpc: Add more DSP FastRPC features

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Date:   Mon, 14 Feb 2022 16:09:50 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     robh+dt@...nel.org, gregkh@...uxfoundation.org
Cc:     devicetree@...r.kernel.org, ekangupt@....qualcomm.com,
        bkumar@....qualcomm.com, linux-kernel@...r.kernel.org,
        srini@...nel.org, bjorn.andersson@...aro.org,
        linux-arm-msm@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v4 00/12] misc: fastrpc: Add more DSP FastRPC features

This patchset adds below DSP FastRPC features that have been missing in
upstream fastrpc driver and also cleans up channel context structure with kref.

- Add ablity to reflect if the DSP domain is secure/unsecure by creating
 seperate device nodes for secured domain, this would used by SE policy
 to restrict applications loading process on the DSP.
- Add new IOCTL to get DSP capabilites
- Add IOCTL to support mapping memory on the DSP.
- Add support for allocating secure memory for DSP
- Handle fdlist in put args
- Handle dma fds in invoke request.

Tested this series on DragonBoard 845c with TensoFlowLite.

Changes since v3:
- remove redundant free in error path of fastrpc_device_register()
- fixed various type cast warnings reported by kernel test robot
- added QCOM_SCM select in Kconfig for secure memory allocations.
- dynamically allocate temp attribute buffer, rather than using it from stack
- added ack for dt-bindings
- removed redundant checks in fastrpc_req_mem_map()

Jeya R (5):
  misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP
  misc: fastrpc: Add support to get DSP capabilities
  dt-bindings: misc: add property to support non-secure DSP
  misc: fastrpc: check before loading process to the DSP
  arm64: dts: qcom: add non-secure domain property to fastrpc nodes

Srinivas Kandagatla (2):
  misc: fastrpc: separate fastrpc device from channel context
  misc: fastrpc: add secure domain support

Vamsi Krishna Gattupalli (5):
  dt-bindings: misc: add fastrpc domain vmid property
  misc: fastrpc: Add support to secure memory map
  misc: fastrpc: Add helper function to get list and page
  misc: fastrpc: Add fdlist implementation
  misc: fastrpc: Add dma handle implementation

 .../devicetree/bindings/misc/qcom,fastrpc.txt |  10 +
 arch/arm64/boot/dts/qcom/msm8916.dtsi         |   1 +
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |   2 +
 arch/arm64/boot/dts/qcom/sm8150.dtsi          |   3 +
 arch/arm64/boot/dts/qcom/sm8250.dtsi          |   3 +
 arch/arm64/boot/dts/qcom/sm8350.dtsi          |   3 +
 drivers/misc/Kconfig                          |   1 +
 drivers/misc/fastrpc.c                        | 556 ++++++++++++++++--
 include/uapi/misc/fastrpc.h                   |  81 ++-
 9 files changed, 612 insertions(+), 48 deletions(-)

-- 
2.21.0