netdev - Re: [PATCH v2 net-next 2/4] amd-xgbe: add support for Crater ethernet device

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Message-ID: <20231119164254.GD186930@vergenet.net>
Date: Sun, 19 Nov 2023 16:42:54 +0000
From: Simon Horman <horms@...nel.org>
To: Raju Rangoju <Raju.Rangoju@....com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, Shyam-sundar.S-k@....com,
	Sudheesh Mavila <sudheesh.mavila@....com>
Subject: Re: [PATCH v2 net-next 2/4] amd-xgbe: add support for Crater
 ethernet device

On Thu, Nov 16, 2023 at 07:24:14PM +0530, Raju Rangoju wrote:
> Add the necessary support to enable Crater ethernet device. Since the
> BAR1 address cannot be used to access the XPCS registers on Crater, use
> the pci_{read/write}_config_dword calls.
> 
> Co-developed-by: Sudheesh Mavila <sudheesh.mavila@....com>
> Signed-off-by: Sudheesh Mavila <sudheesh.mavila@....com>
> Signed-off-by: Raju Rangoju <Raju.Rangoju@....com>

...

> diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c

...

> @@ -479,6 +492,22 @@ static int __maybe_unused xgbe_pci_resume(struct device *dev)
>  	return ret;
>  }
>  
> +static struct xgbe_version_data xgbe_v3 = {
> +	.init_function_ptrs_phy_impl	= xgbe_init_function_ptrs_phy_v2,
> +	.xpcs_access			= XGBE_XPCS_ACCESS_V3,
> +	.mmc_64bit			= 1,
> +	.tx_max_fifo_size		= 65536,
> +	.rx_max_fifo_size		= 65536,
> +	.tx_tstamp_workaround		= 1,
> +	.ecc_support			= 1,
> +	.i2c_support			= 1,
> +	.irq_reissue_support		= 1,
> +	.tx_desc_prefetch		= 5,
> +	.rx_desc_prefetch		= 5,
> +	.an_cdr_workaround		= 0,
> +	.enable_rrc			= 0,
> +};

Hi Raju and Sudheesh,

W=1 allmodconfig builds on x86_64 with gcc-13 and clang-16 flag that
xgbe_v3 us defined but not used.

Please take care to arrange patch-sets so that each patch builds
without introducing new warnings.

> +
>  static struct xgbe_version_data xgbe_v2a = {
>  	.init_function_ptrs_phy_impl	= xgbe_init_function_ptrs_phy_v2,
>  	.xpcs_access			= XGBE_XPCS_ACCESS_V2,

...