linux-kernel - Re: [PATCH net-next 0/2] Initial driver for Synopsys DWC XLGMAC

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Date:   Thu, 8 Dec 2016 16:59:49 +0100
From:   Alexandre Torgue <alexandre.torgue@...com>
To:     Jie Deng <Jie.Deng1@...opsys.com>, <davem@...emloft.net>,
        <f.fainelli@...il.com>, <netdev@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>, <CARLOS.PALMINHA@...opsys.com>,
        <lars.persson@...s.com>, <thomas.lendacky@....com>
Subject: Re: [PATCH net-next 0/2] Initial driver for Synopsys DWC XLGMAC

Hi

On 12/07/2016 04:57 AM, Jie Deng wrote:
> This series provides the support for 25/40/50/100 GbE
> devices using Synopsys DWC Enterprise Ethernet (XLGMAC).

Can you explain which GMAC are you targeted ?

A driver which support some Synopsys GMAC IP already exists. It support 
GMAC 3.5, 3.7, 4.0, 4.10 versions. You can find it in: 
drivers/net/ethernet/stmicro/stmmac/. When I look at all files your 
gonna to create, it looks like to ones in stmmac driver so maybe you 
could easily add your IP inside stmmac driver.

Note that an other driver is existing for synopsys GMAC 4.0 IP. it is 
located in drivers/net/ethernet/synopsys/dwc_eth_qos.c and coming from 
AXIS guys. A task is ongoing to only have stmmac driver so it should be 
harmful to create a new one.

Regards
Alex




>
> The first patch adds support for Synopsys XLGMII.
> The second patch provides the initial driver for Synopsys XLGMAC
>
> The driver has three layers by refactoring AMD XGBE.
>
> dwc-eth-xxx.x
>   The DWC ethernet core layer (DWC ECL). This layer contains codes
> can be shared by different DWC series ethernet cores
>
> dwc-xxx.x (e.g. dwc-xlgmac.c)
>   The DWC MAC HW adapter layer (DWC MHAL). This layer contains
> special support for a specific MAC. e.g. currently, XLGMAC.
>
> xxx-xxx-pci.c xxx-xxx-plat.c (e.g. dwc-xlgmac-pci.c)
>   The glue adapter layer (GAL). Vendors who adopt Synopsys Etherent
> cores can develop a glue driver for their platform.
>
> Jie Deng (2):
>   net: phy: add extension of phy-mode for XLGMII
>   net: ethernet: Initial driver for Synopsys DWC XLGMAC
>
>  Documentation/devicetree/bindings/net/ethernet.txt |    1 +
>  MAINTAINERS                                        |    6 +
>  drivers/net/ethernet/synopsys/Kconfig              |    2 +
>  drivers/net/ethernet/synopsys/Makefile             |    1 +
>  drivers/net/ethernet/synopsys/dwc/Kconfig          |   37 +
>  drivers/net/ethernet/synopsys/dwc/Makefile         |    9 +
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-dcb.c    |  228 ++
>  .../net/ethernet/synopsys/dwc/dwc-eth-debugfs.c    |  328 +++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-desc.c   |  715 +++++
>  .../net/ethernet/synopsys/dwc/dwc-eth-ethtool.c    |  567 ++++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-hw.c     | 3098 ++++++++++++++++++++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-mdio.c   |  252 ++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-net.c    | 2319 +++++++++++++++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-ptp.c    |  216 ++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth-regacc.h | 1115 +++++++
>  drivers/net/ethernet/synopsys/dwc/dwc-eth.h        |  738 +++++
>  drivers/net/ethernet/synopsys/dwc/dwc-xlgmac-pci.c |  538 ++++
>  drivers/net/ethernet/synopsys/dwc/dwc-xlgmac.c     |  135 +
>  drivers/net/ethernet/synopsys/dwc/dwc-xlgmac.h     |   85 +
>  include/linux/phy.h                                |    3 +
>  20 files changed, 10393 insertions(+)
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/Kconfig
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/Makefile
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-dcb.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-debugfs.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-desc.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-ethtool.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-hw.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-mdio.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-net.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-ptp.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth-regacc.h
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-eth.h
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-xlgmac-pci.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-xlgmac.c
>  create mode 100644 drivers/net/ethernet/synopsys/dwc/dwc-xlgmac.h
>