linux-kernel - Re: [PATCH v2 1/3] venus: add firmware version based check

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Message-ID: <bc382695-b619-2c45-8751-2120f8d548ba@quicinc.com>
Date:   Tue, 18 Apr 2023 15:21:24 +0530
From:   Dikshita Agarwal <quic_dikshita@...cinc.com>
To:     Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        <linux-media@...r.kernel.org>, <quic_vgarodia@...cinc.com>,
        <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <mchehab@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        "Viswanath Boma" <quic_vboma@...cinc.com>
Subject: Re: [PATCH v2 1/3] venus: add firmware version based check


On 4/9/2023 10:48 AM, Stanimir Varbanov wrote:
> Hi Dikshita,
>
> Thanks for the patch.
>
> On 7.04.23 г. 9:25 ч., Dikshita Agarwal wrote:
>> Add firmware version based checks to enable/disable
>> features for different SOCs.
>>
>> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
>> Signed-off-by: Vikash Garodia <quic_vgarodia@...cinc.com>
>> Signed-off-by: Viswanath Boma <quic_vboma@...cinc.com>
>> Tested-by: Nathan Hebert <nhebert@...omium.org>
>> ---
>>   drivers/media/platform/qcom/venus/core.h     | 20 ++++++++++++++++++++
>>   drivers/media/platform/qcom/venus/hfi_msgs.c | 11 +++++++++--
>>   2 files changed, 29 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/qcom/venus/core.h 
>> b/drivers/media/platform/qcom/venus/core.h
>> index 32551c2..9d1e4b2 100644
>> --- a/drivers/media/platform/qcom/venus/core.h
>> +++ b/drivers/media/platform/qcom/venus/core.h
>> @@ -202,6 +202,11 @@ struct venus_core {
>>       unsigned int core0_usage_count;
>>       unsigned int core1_usage_count;
>>       struct dentry *root;
>> +    struct venus_img_version {
>> +        u32 major;
>> +        u32 minor;
>> +        u32 rev;
>> +    } venus_ver;
>>   };
>>     struct vdec_controls {
>> @@ -500,4 +505,19 @@ venus_caps_by_codec(struct venus_core *core, u32 
>> codec, u32 domain)
>>       return NULL;
>>   }
>>   +static inline int
>> +is_fw_rev_or_newer(struct venus_core *core, u32 vmajor, u32 vminor, 
>> u32 vrev)
>> +{
>> +    return ((core)->venus_ver.major == vmajor &&
>> +        (core)->venus_ver.minor == vminor &&
>> +        (core)->venus_ver.rev >= vrev);
>> +}
>> +
>> +static inline int
>> +is_fw_rev_or_older(struct venus_core *core, u32 vmajor, u32 vminor, 
>> u32 vrev)
>> +{
>> +    return ((core)->venus_ver.major == vmajor &&
>> +        (core)->venus_ver.minor == vminor &&
>> +        (core)->venus_ver.rev <= vrev);
>> +}
>
> IMO those two should return bool
sure, will update.
>
>>   #endif
>> diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c 
>> b/drivers/media/platform/qcom/venus/hfi_msgs.c
>> index df96db3..07ac0fc 100644
>> --- a/drivers/media/platform/qcom/venus/hfi_msgs.c
>> +++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
>> @@ -248,9 +248,10 @@ static void hfi_sys_init_done(struct venus_core 
>> *core, struct venus_inst *inst,
>>   }
>>     static void
>> -sys_get_prop_image_version(struct device *dev,
>> +sys_get_prop_image_version(struct venus_core *core,
>>                  struct hfi_msg_sys_property_info_pkt *pkt)
>>   {
>> +    struct device *dev = core->dev;
>>       u8 *smem_tbl_ptr;
>>       u8 *img_ver;
>>       int req_bytes;
>> @@ -263,6 +264,12 @@ sys_get_prop_image_version(struct device *dev,
>>           return;
>>         img_ver = pkt->data;
>> +    if (IS_V4(core))
>> +        sscanf(img_ver, "14:VIDEO.VE.%u.%u-%u-PROD",
>> +               &core->venus_ver.major, &core->venus_ver.minor, 
>> &core->venus_ver.rev);
>> +    else if (IS_V6(core))
>> +        sscanf(img_ver, "14:VIDEO.VPU.%u.%u-%u-PROD",
>> +               &core->venus_ver.major, &core->venus_ver.minor, 
>> &core->venus_ver.rev);
>
> what about if IS_V1?

the conditional code above is added only for v6 and v4.

The behavior for v1 remain same as before.

img_ver = pkt->data

>
>>       dev_dbg(dev, VDBGL "F/W version: %s\n", img_ver);
>
> this will crash for v1.
I didn't get why would it crash, could you pls explain?
>
>>   @@ -286,7 +293,7 @@ static void hfi_sys_property_info(struct 
>> venus_core *core,
>>         switch (pkt->property) {
>>       case HFI_PROPERTY_SYS_IMAGE_VERSION:
>> -        sys_get_prop_image_version(dev, pkt);
>> +        sys_get_prop_image_version(core, pkt);
>>           break;
>>       default:
>>           dev_dbg(dev, VDBGL "unknown property data\n");
>