netdev - Re: [PATCH net-next v2] net: ngbe: Add build support for ngbe

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Date:   Thu, 25 Aug 2022 12:47:28 +0200
From:   Paolo Abeni <pabeni@...hat.com>
To:     Mengyuan Lou <mengyuanlou@...-swift.com>, netdev@...r.kernel.org
Cc:     jiawenwu@...stnetic.com
Subject: Re: [PATCH net-next v2] net: ngbe: Add build support for ngbe

Hello,

On Tue, 2022-08-23 at 19:31 +0800, Mengyuan Lou wrote:
> Add build options and guidance doc.
> Initialize pci device access for Wangxun Gigabit Ethernet devices.
> 
> Signed-off-by: Mengyuan Lou <mengyuanlou@...-swift.com>
> Change log:
> v2: address comments:
> 	Jakub Kicinski: The length of the '=====' lines needs to be the same as the length of the text.

Your SoB tag should be the last line in the commit message, please re-
submit moving the changelog after the '---' marker.

> ---
>  .../device_drivers/ethernet/index.rst         |   1 +
>  .../device_drivers/ethernet/wangxun/ngbe.rst  |  14 ++
>  MAINTAINERS                                   |   4 +-
>  drivers/net/ethernet/wangxun/Kconfig          |  13 ++
>  drivers/net/ethernet/wangxun/Makefile         |   1 +
>  drivers/net/ethernet/wangxun/ngbe/Makefile    |   9 +
>  drivers/net/ethernet/wangxun/ngbe/ngbe.h      |  24 +++
>  drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 173 ++++++++++++++++++
>  drivers/net/ethernet/wangxun/ngbe/ngbe_type.h |  50 +++++
>  9 files changed, 288 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/networking/device_drivers/ethernet/wangxun/ngbe.rst
>  create mode 100644 drivers/net/ethernet/wangxun/ngbe/Makefile
>  create mode 100644 drivers/net/ethernet/wangxun/ngbe/ngbe.h
>  create mode 100644 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
>  create mode 100644 drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
> 
> diff --git a/Documentation/networking/device_drivers/ethernet/index.rst b/Documentation/networking/device_drivers/ethernet/index.rst
> index 7f1777173abb..5196905582c5 100644
> --- a/Documentation/networking/device_drivers/ethernet/index.rst
> +++ b/Documentation/networking/device_drivers/ethernet/index.rst
> @@ -52,6 +52,7 @@ Contents:
>     ti/tlan
>     toshiba/spider_net
>     wangxun/txgbe
> +   wangxun/ngbe
>  
>  .. only::  subproject and html
>  
> diff --git a/Documentation/networking/device_drivers/ethernet/wangxun/ngbe.rst b/Documentation/networking/device_drivers/ethernet/wangxun/ngbe.rst
> new file mode 100644
> index 000000000000..43a02f9943e1
> --- /dev/null
> +++ b/Documentation/networking/device_drivers/ethernet/wangxun/ngbe.rst
> @@ -0,0 +1,14 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +=============================================================
> +Linux Base Driver for WangXun(R) Gigabit PCI Express Adapters
> +=============================================================
> +
> +WangXun Gigabit Linux driver.
> +Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd.
> +
> +Support
> +=======
> + If you have problems with the software or hardware, please contact our
> + customer support team via email at nic-support@...-swift.com or check our website
> + at https://www.net-swift.com
> diff --git a/MAINTAINERS b/MAINTAINERS
> index f2d64020399b..4e7ced47a255 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -21834,9 +21834,11 @@ F:	drivers/input/tablet/wacom_serial4.c
>  
>  WANGXUN ETHERNET DRIVER
>  M:	Jiawen Wu <jiawenwu@...stnetic.com>
> +M:	Mengyuan Lou <mengyuanlou@...-swift.com>
> +W:	https://www.net-swift.com
>  L:	netdev@...r.kernel.org
>  S:	Maintained
> -F:	Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
> +F:	Documentation/networking/device_drivers/ethernet/wangxun/*
>  F:	drivers/net/ethernet/wangxun/
>  
>  WATCHDOG DEVICE DRIVERS
> diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig
> index b4a4fa0a58f8..f5d43d8c9629 100644
> --- a/drivers/net/ethernet/wangxun/Kconfig
> +++ b/drivers/net/ethernet/wangxun/Kconfig
> @@ -16,6 +16,19 @@ config NET_VENDOR_WANGXUN
>  
>  if NET_VENDOR_WANGXUN
>  
> +config NGBE
> +	tristate "Wangxun(R) GbE PCI Express adapters support"
> +	depends on PCI
> +	help
> +	  This driver supports Wangxun(R) GbE PCI Express family of
> +	  adapters.
> +
> +	  More specific information on configuring the driver is in
> +	  <file:Documentation/networking/device_drivers/ethernet/wangxun/ngbe.rst>.
> +
> +	  To compile this driver as a module, choose M here. The module
> +	  will be called ngbe.
> +
>  config TXGBE
>  	tristate "Wangxun(R) 10GbE PCI Express adapters support"
>  	depends on PCI
> diff --git a/drivers/net/ethernet/wangxun/Makefile b/drivers/net/ethernet/wangxun/Makefile
> index c34db1bead25..1193b4f738b8 100644
> --- a/drivers/net/ethernet/wangxun/Makefile
> +++ b/drivers/net/ethernet/wangxun/Makefile
> @@ -4,3 +4,4 @@
>  #
>  
>  obj-$(CONFIG_TXGBE) += txgbe/
> +obj-$(CONFIG_TXGBE) += ngbe/
> diff --git a/drivers/net/ethernet/wangxun/ngbe/Makefile b/drivers/net/ethernet/wangxun/ngbe/Makefile
> new file mode 100644
> index 000000000000..0baf75907496
> --- /dev/null
> +++ b/drivers/net/ethernet/wangxun/ngbe/Makefile
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd.
> +#
> +# Makefile for the Wangxun(R) GbE PCI Express ethernet driver
> +#
> +
> +obj-$(CONFIG_NGBE) += ngbe.o
> +
> +ngbe-objs := ngbe_main.o
> diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe.h b/drivers/net/ethernet/wangxun/ngbe/ngbe.h
> new file mode 100644
> index 000000000000..f5fa6e5238cc
> --- /dev/null
> +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe.h
> @@ -0,0 +1,24 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd. */
> +
> +#ifndef _NGBE_H_
> +#define _NGBE_H_
> +
> +#include "ngbe_type.h"
> +
> +#define NGBE_MAX_FDIR_INDICES		7
> +
> +#define NGBE_MAX_RX_QUEUES		(NGBE_MAX_FDIR_INDICES + 1)
> +#define NGBE_MAX_TX_QUEUES		(NGBE_MAX_FDIR_INDICES + 1)
> +
> +/* board specific private data structure */
> +struct ngbe_adapter {
> +	u8 __iomem *io_addr;    /* Mainly for iounmap use */
> +	/* OS defined structs */
> +	struct net_device *netdev;
> +	struct pci_dev *pdev;
> +};
> +
> +extern char ngbe_driver_name[];
> +
> +#endif /* _NGBE_H_ */
> diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
> new file mode 100644
> index 000000000000..ba3a80e5c303
> --- /dev/null
> +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
> @@ -0,0 +1,173 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd. */
> +
> +#include <linux/types.h>
> +#include <linux/module.h>
> +#include <linux/pci.h>
> +#include <linux/netdevice.h>
> +#include <linux/string.h>
> +#include <linux/aer.h>
> +#include <linux/etherdevice.h>

Note that this is triggering a large amount of sparse warning on PW,
but that is likely caused by a sparse bug. Running locally with an
up2date sparse version, such warnings go away


Cheers,

Paolo