Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Subject: Re: [PATCH v6 2/8] remoteproc: qcom: Add flag in adsp private data
 structure
To:     Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>,
        <linux-remoteproc@vger.kernel.org>, <agross@kernel.org>,
        <bjorn.andersson@linaro.org>, <lgirdwood@gmail.com>,
        <broonie@kernel.org>, <robh+dt@kernel.org>,
        <quic_plai@quicinc.com>, <bgoswami@quicinc.com>, <perex@perex.cz>,
        <tiwai@suse.com>, <srinivas.kandagatla@linaro.org>,
        <quic_rohkumar@quicinc.com>, <linux-arm-msm@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <swboyd@chromium.org>,
        <judyhsiao@chromium.org>, <devicetree@vger.kernel.org>
References: <1662643422-14909-1-git-send-email-quic_srivasam@quicinc.com>
 <1662643422-14909-3-git-send-email-quic_srivasam@quicinc.com>
From:   Sibi Sankar <quic_sibis@quicinc.com>
Message-ID: <9a483cbc-f90a-65c8-5edf-95fa9016ce6b@quicinc.com>
Date:   Wed, 14 Sep 2022 14:36:36 +0530
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.10.0
MIME-Version: 1.0
In-Reply-To: <1662643422-14909-3-git-send-email-quic_srivasam@quicinc.com>
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 9/8/22 6:53 PM, Srinivasa Rao Mandadapu wrote:
> Add flag in qcom_adsp private data structure and initialize
> it to distinguish ADSP and WPSS modules for using iommu selectively.

There are other flags available to distinguish between ADSP and WPSS
like 'is_wpss'. So you probably want to tweak your commit message to
just say if it has a iommu in front of it or not and skip referencing
WPSS.

Reviewed-by: Sibi Sankar <quic_sibis@quicinc.com>

> 
> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> ---
> Changes since V5:
> 	-- Rename adsp_sandbox_needed to has_iommu.
> Changes since V3:
> 	-- Rename is_adsp_sb_needed to adsp_sandbox_needed.
> Changes since V2:
> 	-- Add is_adsp_sb_needed flag instead of is_wpss.
> 
>   drivers/remoteproc/qcom_q6v5_adsp.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c
> index 2f3b9f5..fa2ccac 100644
> --- a/drivers/remoteproc/qcom_q6v5_adsp.c
> +++ b/drivers/remoteproc/qcom_q6v5_adsp.c
> @@ -62,6 +62,7 @@ struct adsp_pil_data {
>   	const char *sysmon_name;
>   	int ssctl_id;
>   	bool is_wpss;
> +	bool has_iommu;
>   	bool auto_boot;
>   
>   	const char **clk_ids;
> @@ -99,6 +100,7 @@ struct qcom_adsp {
>   	phys_addr_t mem_reloc;
>   	void *mem_region;
>   	size_t mem_size;
> +	bool has_iommu;
>   
>   	struct device *proxy_pds[QCOM_Q6V5_RPROC_PROXY_PD_MAX];
>   	size_t proxy_pd_count;
> @@ -596,12 +598,15 @@ static int adsp_probe(struct platform_device *pdev)
>   	}
>   
>   	rproc->auto_boot = desc->auto_boot;
> +	rproc->has_iommu = desc->has_iommu;
>   	rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
>   
>   	adsp = (struct qcom_adsp *)rproc->priv;
>   	adsp->dev = &pdev->dev;
>   	adsp->rproc = rproc;
>   	adsp->info_name = desc->sysmon_name;
> +	adsp->has_iommu = desc->has_iommu;
> +
>   	platform_set_drvdata(pdev, adsp);
>   
>   	if (desc->is_wpss)
>