linux-kernel - Re: [PATCH v3 1/3] venus: add firmware version based check

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Date:   Thu, 4 May 2023 11:42:54 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Dikshita Agarwal <quic_dikshita@...cinc.com>,
        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 v3 1/3] venus: add firmware version based check



On 4.05.2023 11:39, Dikshita Agarwal wrote:
> Add firmware version based checks to enable/disable
> features for different SOCs.
> 
> Signed-off-by: Vikash Garodia <quic_vgarodia@...cinc.com>
> Signed-off-by: Viswanath Boma <quic_vboma@...cinc.com>
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...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 | 27 +++++++++++++++++++++++++--
>  2 files changed, 45 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 32551c2..2f2176f 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 bool
> +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 bool
> +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..4854863 100644
> --- a/drivers/media/platform/qcom/venus/hfi_msgs.c
> +++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
> @@ -248,13 +248,16 @@ 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;
>  	size_t smem_blk_sz;
> +	int ret;
> +	u8 *ver_str;
>  
>  	req_bytes = pkt->hdr.size - sizeof(*pkt);
>  
> @@ -263,6 +266,26 @@ sys_get_prop_image_version(struct device *dev,
>  		return;
>  
>  	img_ver = pkt->data;
> +	if (IS_V6(core) && core->res->num_vpp_pipes == 1) {
> +		ret = sscanf(img_ver, "14:video-firmware.%u.%u-%u",
> +			     &core->venus_ver.major, &core->venus_ver.minor, &core->venus_ver.rev);
This is still not perfect, 8350 has 4 vpp pipes and its firmware is
also denominated with "video-firmware".. perhaps we can just try
each variant until we reach ret == 3?

> +		if (ret != 2) {
3?

Konrad
> +			dev_dbg(dev, VDBGL "error reading F/W version\n");
> +			return;
> +		}
> +	} else {
> +		if (IS_V6(core))
> +			ver_str = "14:VIDEO.VPU.%u.%u-%u";
> +		else
> +			ver_str = "14:VIDEO.VE.%u.%u-%u";
> +
> +		ret = sscanf(img_ver, "14:VIDEO.VE.%u.%u-%u",
> +			     &core->venus_ver.major, &core->venus_ver.minor, &core->venus_ver.rev);
> +		if (ret != 3) {
> +			dev_dbg(dev, VDBGL "error reading F/W version\n");
> +			return;
> +		}
> +	}
>  
>  	dev_dbg(dev, VDBGL "F/W version: %s\n", img_ver);
>  
> @@ -286,7 +309,7 @@ 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");