linux-kernel - Re: [PATCH v6 2/8] remoteproc: qcom: Add flag in adsp private data structure

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Date:   Mon, 19 Sep 2022 19:35:31 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     Sibi Sankar <quic_sibis@...cinc.com>,
        <linux-remoteproc@...r.kernel.org>, <agross@...nel.org>,
        <bjorn.andersson@...aro.org>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...cinc.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <srinivas.kandagatla@...aro.org>,
        <quic_rohkumar@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <swboyd@...omium.org>,
        <judyhsiao@...omium.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH v6 2/8] remoteproc: qcom: Add flag in adsp private data
 structure


On 9/14/2022 2:36 PM, Sibi Sankar wrote:
Thanks for Your time Sibi Sankar!!!
> 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.
Okay. Will update commit message.
>
> Reviewed-by: Sibi Sankar <quic_sibis@...cinc.com>
>
>>
>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>> Reviewed-by: Stephen Boyd <swboyd@...omium.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)
>>