linux-kernel - [PATCH v6 0/2] Add qcom smc/hvc transport support

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Message-ID: <20231009191437.27926-1-quic_nkela@quicinc.com>
Date:   Mon, 9 Oct 2023 12:14:35 -0700
From:   Nikunj Kela <quic_nkela@...cinc.com>
To:     <sudeep.holla@....com>
CC:     <cristian.marussi@....com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>,
        Nikunj Kela <quic_nkela@...cinc.com>
Subject: [PATCH v6 0/2] Add qcom smc/hvc transport support

This change augments smc transport to include support for Qualcomm virtual
platforms by passing a parameter(capability-id) in the hypervisor call to
identify which doorbell to assert. This parameter is dynamically generated
at runtime on the device and insuitable to pass via the devicetree.

The capability-id is stored by firmware in the shmem region.

This has been tested on ARM64 virtual Qualcomm platform.

---
v6 -> use unsigned long for cap-id

v5 -> changed compatible, removed polling support patch,
      make use of smc-id binding for function-id

v4 -> port the changes into smc.c

v3 -> fix the compilation error reported by the test bot,
      add support for polling based instances

v2 -> use allOf construct in dtb schema,
      remove wrappers from mutexes,
      use architecture independent channel layout

v1 -> original patches

Nikunj Kela (2):
  dt-bindings: arm: Add new compatible for smc/hvc transport for SCMI
  firmware: arm_scmi: Add qcom smc/hvc transport support

 .../bindings/firmware/arm,scmi.yaml           |  4 +++
 drivers/firmware/arm_scmi/driver.c            |  1 +
 drivers/firmware/arm_scmi/smc.c               | 27 +++++++++++++++++--
 3 files changed, 30 insertions(+), 2 deletions(-)

-- 
2.17.1