linux-kernel - Re: [PATCH v3] uio: dfl: add HSSI subsystem feature id

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Date:   Fri, 29 Apr 2022 05:23:53 -0700
From:   Tom Rix <trix@...hat.com>
To:     Tianfei Zhang <tianfei.zhang@...el.com>, hao.wu@...el.com,
        mdf@...nel.org, yilun.xu@...el.com, linux-fpga@...r.kernel.org,
        gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org,
        Matthew Gerlach <matthew.gerlach@...ux.intel.com>
Subject: Re: [PATCH v3] uio: dfl: add HSSI subsystem feature id


On 4/28/22 5:57 PM, Tianfei Zhang wrote:
> From: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
>
> Add the Device Feature List (DFL) feature id for the
> High Speed Serial Interface (HSSI) Subsystem to the
> table of ids supported by the uio_dfl driver.
>
> The HSSI Subsystem is a configurable set of IP blocks
> to be used as part of a Ethernet or PCS/FEC/PMA pipeline.
> Like the Ethernet group used by the N3000 card, the HSSI
> Subsystem does not fully implement a network device from
> a Linux netdev perspective and is controlled and monitored
> from user space software via the uio interface.

Generally you should include the url for the dfl definitions.

Can you add it here to the commit log ?

Otherwise fine.

Reviewed-by: Tom Rix <trix@...hat.com>

>
> Signed-off-by: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
> Signed-off-by: Tianfei Zhang <tianfei.zhang@...el.com>
> ---
> v3: change the name of this feature id to HSSI_SUBSYS and rewrite
>      the git message.
> v2: add HSSI introduction and the git repo of Feature ID table.
> ---
>   drivers/uio/uio_dfl.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/uio/uio_dfl.c b/drivers/uio/uio_dfl.c
> index 89c0fc7b0cbc..8f39cc8bb034 100644
> --- a/drivers/uio/uio_dfl.c
> +++ b/drivers/uio/uio_dfl.c
> @@ -45,9 +45,11 @@ static int uio_dfl_probe(struct dfl_device *ddev)
>   }
>   
>   #define FME_FEATURE_ID_ETH_GROUP	0x10
> +#define FME_FEATURE_ID_HSSI_SUBSYS	0x15
>   
>   static const struct dfl_device_id uio_dfl_ids[] = {
>   	{ FME_ID, FME_FEATURE_ID_ETH_GROUP },
> +	{ FME_ID, FME_FEATURE_ID_HSSI_SUBSYS },
>   	{ }
>   };
>   MODULE_DEVICE_TABLE(dfl, uio_dfl_ids);