Re: [PATCH 7/8] remoteproc: qcom: Add support for memory sandbox

[Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>]

On 8/7/2022 2:09 AM, Christophe JAILLET wrote:
Thanks for Your Time CJ!!!
> Hi,
>
> the error handling below looks odd.
>
> Le 03/08/2022 à 16:21, Srinivasa Rao Mandadapu a écrit :
>> Add memory sandbox support for ADSP based platforms secure booting.
>>
>> Signed-off-by: Srinivasa Rao Mandadapu 
>> <quic_srivasam-jfJNa2p1gH1BDgjK7y7TUQ@public.gmane.org>
>> ---
>>   drivers/remoteproc/qcom_q6v5_adsp.c | 101 
>> +++++++++++++++++++++++++++++++++++-
>>   1 file changed, 99 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c 
>> b/drivers/remoteproc/qcom_q6v5_adsp.c
>> index 3dbd035..f81da47 100644
>> --- a/drivers/remoteproc/qcom_q6v5_adsp.c
>> +++ b/drivers/remoteproc/qcom_q6v5_adsp.c
>
>>   static int adsp_start(struct rproc *rproc)
>>   {
>>       struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
>> @@ -341,7 +429,13 @@ static int adsp_start(struct rproc *rproc)
>>       ret = qcom_q6v5_prepare(&adsp->q6v5);
>>       if (ret)
>>           return ret;
>> -
>> +    if (!adsp->is_wpss) {
>> +        ret = adsp_map_smmu(adsp, rproc);
>> +        if (ret) {
>> +            dev_err(adsp->dev, "ADSP smmu mapping failed\n");
>> +            goto adsp_smmu_unmap;
> goto disable_irqs;?
Yes. will correct it accordingly.
>
>> +        }
>> +    }
>>       ret = clk_prepare_enable(adsp->xo);
>>       if (ret)
>>           goto disable_irqs;
>
> goto adsp_smmu_unmap;?
Yes. will correct it accordingly.
>
>> @@ -402,6 +496,9 @@ static int adsp_start(struct rproc *rproc)
>>       clk_disable_unprepare(adsp->xo);
>>   disable_irqs:
>>       qcom_q6v5_unprepare(&adsp->q6v5);
>> +adsp_smmu_unmap:
>> +    iommu_unmap(adsp->iommu_dom, adsp->mem_phys, adsp->mem_size);
>> +    iommu_domain_free(adsp->iommu_dom);
>
> Should this new hunk be above disable_irqs?
> And I think that it should be guardd with a "if (!adsp->is_wpss)".
Yes. will correct it accordingly.
>
> CJ
>
>>         return ret;
>>   }
>