linux-kernel - [PATCH v1 00/16] Add missing features to FastRPC driver

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Date: Fri, 2 Feb 2024 12:10:23 +0530
From: Ekansh Gupta <quic_ekangupt@...cinc.com>
To: <srinivas.kandagatla@...aro.org>, <linux-arm-msm@...r.kernel.org>
CC: <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 00/16] Add missing features to FastRPC driver

This patch series adds the listed features that have been missing
in upstream fastRPC driver.

- Redesign and improve remote heap management.
- Add static PD restart support for audio and sensors PD using
  PDR framework.
- Add changes to support multimode invocation ioctl request. This
  ioctl call facilitates multiple types of requests from user including
  CRC check, performance counters, shared context bank usage, etc.
  This series also carries patch to save and restore interrupted
  context.
- Add early wakeup support to allow DSP user to send early response
  to CPU and improve fastrpc performance.
- Add polling mode support with which driver polls on memory to avoid
  CPU from going to low power modes.
- Add notifications frameworks to provide users with the DSP PD status
  notifications.
- Add a control mechanism to allow users to clean up DSP user PD
- Add wakelock management support
- Add DSP signalling support
- Add check for untrusted applications and allow trusted processed to
  offload to system unsigned PD.

Ekansh Gupta (16):
  misc: fastrpc: Redesign remote heap management
  misc: fastrpc: Add support for unsigned PD
  misc: fastrpc: Add static PD restart support
  misc: fastrpc: Add fastrpc multimode invoke request support
  misc: fastrpc: Add CRC support for remote buffers
  misc: fastrpc: Capture kernel and DSP performance counters
  misc: fastrpc: Add support to save and restore interrupted
  misc: fastrpc: Add support to allocate shared context bank
  misc: fastrpc: Add early wakeup support for fastRPC driver
  misc: fastrpc: Add polling mode support for fastRPC driver
  misc: fastrpc: Add DSP PD notification support
  misc: fastrpc: Add support for users to clean up DSP user PD
  misc: fastrpc: Add wakelock management support
  misc: fastrpc: Add DSP signal support
  misc: fastrpc: Restrict untrusted apk to spawn privileged PD
  misc: fastrpc: Add system unsigned PD support

 drivers/misc/fastrpc.c      | 1949 +++++++++++++++++++++++++++++++----
 include/uapi/misc/fastrpc.h |  112 ++
 2 files changed, 1844 insertions(+), 217 deletions(-)

-- 
2.17.0