netdev - Re: [PATCH v5 2/5] net: rnpgbe: Add n500/n210 chip support

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Message-ID: <78DD9702C797EEA1+20250820014341.GA1580474@nic-Precision-5820-Tower>
Date: Wed, 20 Aug 2025 09:43:41 +0800
From: Yibo Dong <dong100@...se.com>
To: Vadim Fedorenko <vadim.fedorenko@...ux.dev>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
	corbet@....net, gur.stavi@...wei.com, maddy@...ux.ibm.com,
	mpe@...erman.id.au, danishanwar@...com, lee@...ger.us,
	gongfan1@...wei.com, lorenzo@...nel.org, geert+renesas@...der.be,
	Parthiban.Veerasooran@...rochip.com, lukas.bulwahn@...hat.com,
	alexanderduyck@...com, richardcochran@...il.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH v5 2/5] net: rnpgbe: Add n500/n210 chip support

On Tue, Aug 19, 2025 at 02:59:09PM +0100, Vadim Fedorenko wrote:
> On 18/08/2025 12:28, Dong Yibo wrote:
> > Initialize n500/n210 chip bar resource map and
> > dma, eth, mbx ... info for future use.
> > 
> [...]
> 
> > +struct mucse_hw {
> > +	void __iomem *hw_addr;
> > +	void __iomem *ring_msix_base;
> > +	struct pci_dev *pdev;
> > +	enum rnpgbe_hw_type hw_type;
> > +	struct mucse_dma_info dma;
> > +	struct mucse_eth_info eth;
> > +	struct mucse_mac_info mac;
> > +	struct mucse_mbx_info mbx;
> > +	u32 usecstocount;
> 
> What is this field for? You don't use it anywhere in the patchset apart
> from initialization. Maybe it's better to introduce it once it's used?
> Together with the defines of values for this field...
> 

It is used to store chip frequency which is used to calculate values
related to 'delay register' in the future. I will improve this.

Thanks for your feedback.