linux-kernel - Re: [PATCH v3 0/3] Add qcom hvc/shmem transport

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Message-ID: <3342d8bf-5281-c082-cb9a-7a027b413237@quicinc.com>
Date:   Tue, 5 Sep 2023 09:06:31 -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>,
        <agross@...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>
Subject: Re: [PATCH v3 0/3] Add qcom hvc/shmem transport


On 8/11/2023 10:57 AM, Nikunj Kela wrote:
> This change introduce a new transport channel for Qualcomm virtual
> platforms. The transport is mechanically similar to ARM_SCMI_TRANSPORT_SMC.
> The difference between the two transports is that a parameter is passed 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 function ID and parameter are stored by firmware in the shmem region.
>
> This has been tested on ARM64 virtual Qualcomm platform.
>
> ---
> 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 (3):
>    dt-bindings: arm: convert nested if-else construct to allOf
>    dt-bindings: arm: Add qcom specific hvc transport for SCMI
>    firmware: arm_scmi: Add qcom hvc/shmem transport
>
>   .../bindings/firmware/arm,scmi.yaml           |  67 ++---
>   drivers/firmware/arm_scmi/Kconfig             |  13 +
>   drivers/firmware/arm_scmi/Makefile            |   2 +
>   drivers/firmware/arm_scmi/common.h            |   3 +
>   drivers/firmware/arm_scmi/driver.c            |   4 +
>   drivers/firmware/arm_scmi/qcom_hvc.c          | 232 ++++++++++++++++++
>   6 files changed, 293 insertions(+), 28 deletions(-)
>   create mode 100644 drivers/firmware/arm_scmi/qcom_hvc.c
Gentle Ping!