netdev - Re: [net-next 4/4] Octeontx2-af: Debugfs support for firmware data

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Message-ID: <20250717123815.GE27043@horms.kernel.org>
Date: Thu, 17 Jul 2025 13:38:15 +0100
From: Simon Horman <horms@...nel.org>
To: Hariprasad Kelam <hkelam@...vell.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, kuba@...nel.org,
	davem@...emloft.net, sgoutham@...vell.com, gakula@...vell.com,
	jerinj@...vell.com, lcherian@...vell.com, sbhatta@...vell.com,
	naveenm@...vell.com, edumazet@...gle.com, pabeni@...hat.com,
	andrew+netdev@...n.ch, bbhushan2@...vell.com
Subject: Re: [net-next 4/4] Octeontx2-af: Debugfs support for firmware data

On Wed, Jul 16, 2025 at 10:11:58PM +0530, Hariprasad Kelam wrote:
> MAC address, Link modes (supported and advertised) and eeprom data
> for the Netdev interface are read from the shared firmware data.
> This patch adds debugfs support for the same.
> 
> Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
> ---
>  .../net/ethernet/marvell/octeontx2/af/mbox.h  |   7 +-
>  .../marvell/octeontx2/af/rvu_debugfs.c        | 148 ++++++++++++++++++
>  2 files changed, 154 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> index 0bc0dc79868b..933073cd2280 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> @@ -664,7 +664,12 @@ struct cgx_lmac_fwdata_s {
>  	/* Only applicable if SFP/QSFP slot is present */
>  	struct sfp_eeprom_s sfp_eeprom;
>  	struct phy_s phy;
> -#define LMAC_FWDATA_RESERVED_MEM 1021
> +	u32 lmac_type;
> +	u32 portm_idx;
> +	u64 mgmt_port:1;
> +	u64 advertised_an:1;
> +	u64 port;
> +#define LMAC_FWDATA_RESERVED_MEM 1018
>  	u64 reserved[LMAC_FWDATA_RESERVED_MEM];
>  };
>  
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
> index 0c20642f81b9..900bd1ae240d 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
> @@ -867,6 +867,65 @@ static int rvu_dbg_rvu_pf_cgx_map_display(struct seq_file *filp, void *unused)
>  
>  RVU_DEBUG_SEQ_FOPS(rvu_pf_cgx_map, rvu_pf_cgx_map_display, NULL);
>  
> +static int rvu_dbg_rvu_fwdata_display(struct seq_file *s, void *unused)
> +{
> +	struct rvu *rvu = s->private;
> +	struct rvu_fwdata *fwdata;
> +	u8 mac[ETH_ALEN];
> +	int count = 0, i;
> +
> +	if (!rvu->fwdata)
> +		return -EAGAIN;
> +
> +	fwdata = rvu->fwdata;
> +	seq_puts(s, "\nRVU Firmware Data:\n");
> +	seq_puts(s, "\n\t\tPTP INFORMATION\n");
> +	seq_puts(s, "\t\t===============\n");
> +	seq_printf(s, "\t\texternal clockrate \t :%x\n", fwdata->ptp_ext_clk_rate);

Please line wrap to 80 columns wide or less.
Likewise elsewhere in this patch.

> +	seq_printf(s, "\t\texternal timestamp \t :%x\n", fwdata->ptp_ext_tstamp);
> +	seq_puts(s, "\n");
> +
> +	seq_puts(s, "\n\t\tSDP CHANNEL INFORMATION\n");
> +	seq_puts(s, "\t\t=======================\n");
> +	seq_printf(s, "\t\tValid \t\t\t :%x\n", fwdata->channel_data.valid);
> +	seq_printf(s, "\t\tNode ID \t\t :%x\n", fwdata->channel_data.info.node_id);
> +	seq_printf(s, "\t\tNumner of VFs  \t\t :%x\n", fwdata->channel_data.info.max_vfs);
> +	seq_printf(s, "\t\tNumber of PF-Rings \t :%x\n", fwdata->channel_data.info.num_pf_rings);
> +	seq_printf(s, "\t\tPF SRN \t\t\t :%x\n", fwdata->channel_data.info.pf_srn);
> +	seq_puts(s, "\n");

...

-- 
pw-bot: changes-requested