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

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Date:   Wed, 5 Apr 2023 13:50:36 +0530
From:   Dikshita Agarwal <quic_dikshita@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        <linux-media@...r.kernel.org>, <stanimir.k.varbanov@...il.com>,
        <quic_vgarodia@...cinc.com>, <agross@...nel.org>,
        <andersson@...nel.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 1/3] venus: add firmware version based check


On 4/4/2023 11:48 PM, Konrad Dybcio wrote:
>
> On 4.04.2023 08:17, 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     | 18 ++++++++++++++++++
>>   drivers/media/platform/qcom/venus/hfi_msgs.c | 11 +++++++++--
>>   2 files changed, 27 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
>> index 32551c2..ee8b70a 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 +505,17 @@ 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)
> So this is trying to find the revision of a MAJ.MIN firmware release..
>
> Is the MAJ.MIN part supposed to stay constant for a specific version of
> a Venus block (say idk, IRIS2) and only the VREV part is supposed to
> be updated with both feature and security developments?

Yes Major and minor numbers will be constant for a SPC and only the

revision will be updated with any new release.

>> +{
>> +	return ((core)->venus_ver.major == vmajor && (core)->venus_ver.minor ==
>> +			vminor && (core)->venus_ver.rev >= vrev);
> return ((core)->venus_ver.major == vmajor &&
> 	(core)->venus_ver.minor == vminor &&
> 	(core)->venus_ver.rev >= vrev);
>
> for readability
Sure, will take care of this in next version.
> Konrad
>> +}
>> +
>> +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);
>> +}
>>   #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);
>>   
>>   	dev_dbg(dev, VDBGL "F/W version: %s\n", img_ver);
>>   
>> @@ -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");