linux-kernel - Re: [PATCH 05/18] media: venus: hfi_venus: Sanitize venus_boot

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Message-ID: <5f23ddc7-1bbf-320b-cb5a-9b1bfde3dfff@linaro.org>
Date:   Thu, 2 Mar 2023 12:10:05 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Dikshita Agarwal <quic_dikshita@...cinc.com>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Dikshita Agarwal <dikshita@....qualcomm.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Dikshita Agarwal <dikshita@...eaurora.org>,
        Mansur Alisha Shaik <mansur@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vikash Garodia <vgarodia@...eaurora.org>
Subject: Re: [PATCH 05/18] media: venus: hfi_venus: Sanitize venus_boot_core()
 per-VPU-version



On 2.03.2023 12:00, Dikshita Agarwal wrote:
> 
> On 2/28/2023 8:54 PM, Konrad Dybcio wrote:
>> The current assumption of IS_V6 is overgeneralized. Adjust the logic
>> to take the VPU hardware version into account.
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>> ---
>>   drivers/media/platform/qcom/venus/hfi_venus.c | 10 ++++++----
>>   1 file changed, 6 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c
>> index 4ccf31147c2a..772e5e9cf127 100644
>> --- a/drivers/media/platform/qcom/venus/hfi_venus.c
>> +++ b/drivers/media/platform/qcom/venus/hfi_venus.c
>> @@ -448,20 +448,21 @@ static int venus_boot_core(struct venus_hfi_device *hdev)
>>   {
>>       struct device *dev = hdev->core->dev;
>>       static const unsigned int max_tries = 100;
>> -    u32 ctrl_status = 0, mask_val;
>> +    u32 ctrl_status = 0, mask_val = 0;
>>       unsigned int count = 0;
>>       void __iomem *cpu_cs_base = hdev->core->cpu_cs_base;
>>       void __iomem *wrapper_base = hdev->core->wrapper_base;
>>       int ret = 0;
>>         writel(BIT(VIDC_CTRL_INIT_CTRL_SHIFT), cpu_cs_base + VIDC_CTRL_INIT);
>> -    if (IS_V6(hdev->core)) {
>> +    if (IS_IRIS1(hdev->core) || IS_IRIS2(hdev->core) || IS_IRIS2_1(hdev->core)) {
> 
> I think the IRIS1 check can be removed from here as we are not handling IRIS1 related things at other places.
> 
> we can add the required checks for IRIS1 when we add support for any IRIS1 based chipset.
Up to you really, I plan on getting IRIS1 (SM8150) supported and have
some mumbling going on for that on my local branch. FWIW these checks
are logically correct and I would personally prefer not to have to go
through each one of them and remove them just to bring them back soon.

Konrad
> 
> Thanks,
> 
> Dikshita
> 
>>           mask_val = readl(wrapper_base + WRAPPER_INTR_MASK);
>>           mask_val &= ~(WRAPPER_INTR_MASK_A2HWD_BASK_V6 |
>>                     WRAPPER_INTR_MASK_A2HCPU_MASK);
>>       } else {
>>           mask_val = WRAPPER_INTR_MASK_A2HVCODEC_MASK;
>>       }
>> +
>>       writel(mask_val, wrapper_base + WRAPPER_INTR_MASK);
>>       writel(1, cpu_cs_base + CPU_CS_SCIACMDARG3);
>>   @@ -480,10 +481,11 @@ static int venus_boot_core(struct venus_hfi_device *hdev)
>>       if (count >= max_tries)
>>           ret = -ETIMEDOUT;
>>   -    if (IS_V6(hdev->core)) {
>> +    if (IS_AR50_LITE(hdev->core) || IS_IRIS2(hdev->core) || IS_IRIS2_1(hdev->core))
>>           writel(0x1, cpu_cs_base + CPU_CS_H2XSOFTINTEN_V6);
>> +
>> +    if (IS_IRIS2(hdev->core) || IS_IRIS2_1(hdev->core))
>>           writel(0x0, cpu_cs_base + CPU_CS_X2RPMH_V6);
>> -    }
>>         return ret;
>>   }
>>