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From:   "Ong, Boon Leong" <boon.leong.ong@intel.com>
To:     Alexandre Torgue <alexandre.torgue@foss.st.com>,
        Jose Abreu <Jose.Abreu@synopsys.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        Paolo Abeni <pabeni@redhat.com>,
        "David S . Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Vladimir Oltean <olteanv@gmail.com>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        "Florian Fainelli" <f.fainelli@gmail.com>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Giuseppe Cavallaro <peppe.cavallaro@st.com>
CC:     "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-stm32@st-md-mailman.stormreply.com" 
        <linux-stm32@st-md-mailman.stormreply.com>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Riva, Emilio" <emilio.riva@ericsson.com>
Subject: RE: [PATCH net-next v2 0/7] pcs-xpcs, stmmac: add 1000BASE-X AN for
 network switch
Thread-Topic: [PATCH net-next v2 0/7] pcs-xpcs, stmmac: add 1000BASE-X AN for
 network switch
Thread-Index: AQHYfHsADZjbSVqcIU+eQNlLC8+Ikq1H/bpg
Date:   Fri, 10 Jun 2022 03:37:32 +0000
Message-ID: <DM4PR11MB60955991A4970811F0283D9BCAA69@DM4PR11MB6095.namprd11.prod.outlook.com>
References: <20220610032941.113690-1-boon.leong.ong@intel.com>
In-Reply-To: <20220610032941.113690-1-boon.leong.ong@intel.com>
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My bad in missing the 1/7 patch. Please ignore these series. I will be send=
ing v3.=20

>-----Original Message-----
>From: Ong, Boon Leong <boon.leong.ong@intel.com>
>Sent: Friday, June 10, 2022 11:30 AM
>To: Alexandre Torgue <alexandre.torgue@foss.st.com>; Jose Abreu
><Jose.Abreu@synopsys.com>; Andrew Lunn <andrew@lunn.ch>; Heiner
>Kallweit <hkallweit1@gmail.com>; Russell King <linux@armlinux.org.uk>; Pao=
lo
>Abeni <pabeni@redhat.com>; David S . Miller <davem@davemloft.net>; Eric
>Dumazet <edumazet@google.com>; Jakub Kicinski <kuba@kernel.org>;
>Vladimir Oltean <olteanv@gmail.com>; Vivien Didelot
><vivien.didelot@gmail.com>; Florian Fainelli <f.fainelli@gmail.com>; Maxim=
e
>Coquelin <mcoquelin.stm32@gmail.com>; Giuseppe Cavallaro
><peppe.cavallaro@st.com>
>Cc: netdev@vger.kernel.org; linux-stm32@st-md-mailman.stormreply.com;
>linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org; Riva,
>Emilio <emilio.riva@ericsson.com>; Ong, Boon Leong
><boon.leong.ong@intel.com>
>Subject: [PATCH net-next v2 0/7] pcs-xpcs, stmmac: add 1000BASE-X AN for
>network switch
>
>Hi,
>
>Thanks Russell King [1] and Andrew Lunn [2] for v1 review and suggestion.
>Since then, I have worked on refactoring the implementation as follow:
>
>v2 changes:
>1/7 - [New] Update xpcs_do_config to accept advertising input
>2/7 - [New] Fix to compilation issue introduced v1. Update xpcs_do_config
>            for sja1105.
>3/7 - Same as 3/4 of v1 series.
>4/7 - [Fix] Fix numerous issues identified by Russell King [1].
>5/7 - [New] Make fixed-link setting takes precedence over ovr_an_inband.
>            This is a fix to a bug introduced earlier. Separate patch
>            will be sent later.
>6/7 - [New] Allow phy-mode ACPI _DSD setting for dwmac-intel to overwrite
>            the phy_interface detected through PCI DevID.
>7/7 - [New] Make mdio register flow to skip PHY scanning if fixed-link
>            is specified.
>
>I have tested the patch-series on a 3-port SGMII Ethernet on Elkhart Lake
>customer platform and PSE GbE1 (0000:00:1d.2) is setup for fixed-link
>with below ACPI _DSD modification based on [3]:-
>
>        Device (OTN1)
>        {
>            <snippet-remove>
>
>            Name (_DSD, Package () {
>                ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
>                    Package () {
>                        Package () {"phy-mode", "1000base-x"},
>                    },
>                ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
>                    Package () {
>                        Package () {"fixed-link", "LNK0"}
>                    }
>            })
>
>            Name (LNK0, Package(){ // Data-only subnode of port
>                ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
>                    Package () {
>                        Package () {"speed", 1000},
>                        Package () {"full-duplex", 1}
>                    }
>            })
>        }
>
>The modified ACPI DSDT table is inserted into OS based on [4] for
>testing purpose. This method will not be required if respective BIOS has
>the matching ACPI _DSD changes. In gist, we avoid the need to add board
>specific DMI based configuration to Linux driver and let ACPI DSDT table
>customized according to hardware/port configuration design to decide how
>the driver is loaded up per port-basis.
>
>From dmesg below (whereby non-relevant section removed), we can see that:-
>
>[    4.112037] intel-eth-pci 0000:00:1d.1 eno1: configuring for inband/sgm=
ii
>link mode
>[    4.132016] intel-eth-pci 0000:00:1d.2 eno2: configuring for
>fixed/1000base-x link mode
>[    4.162069] intel-eth-pci 0000:00:1e.4 eno3: configuring for inband/sgm=
ii
>link mode
>
>--------------------------------------------------------------------------=
--------------------------------
>-
>[    1.471347] intel-eth-pci 0000:00:1d.1: stmmac_config_multi_msi: multi =
MSI
>enablement successful
>[    1.471518] intel-eth-pci 0000:00:1d.1: User ID: 0x51, Synopsys ID: 0x5=
2
>[    1.471525] intel-eth-pci 0000:00:1d.1:      DWMAC4/5
>[    1.471531] intel-eth-pci 0000:00:1d.1: DMA HW capability register
>supported
>[    1.471533] intel-eth-pci 0000:00:1d.1: RX Checksum Offload Engine
>supported
>[    1.471535] intel-eth-pci 0000:00:1d.1: TX Checksum insertion supported
>[    1.471536] intel-eth-pci 0000:00:1d.1: TSO supported
>[    1.471537] intel-eth-pci 0000:00:1d.1: Enable RX Mitigation via HW
>Watchdog Timer
>[    1.471542] intel-eth-pci 0000:00:1d.1: device MAC address
>a8:a1:59:9d:2b:64
>[    1.471545] intel-eth-pci 0000:00:1d.1: Enabled L3L4 Flow TC (entries=
=3D2)
>[    1.471547] intel-eth-pci 0000:00:1d.1: Enabled RFS Flow TC (entries=3D=
10)
>[    1.471552] intel-eth-pci 0000:00:1d.1: Enabling HW TC (entries=3D256,
>max_off=3D256)
>[    1.471555] intel-eth-pci 0000:00:1d.1: TSO feature enabled
>[    1.471556] intel-eth-pci 0000:00:1d.1: Using 32 bits DMA width
>[    1.471770] mdio_bus stmmac-2: GPIO lookup for consumer reset
>[    1.471774] mdio_bus stmmac-2: using lookup tables for GPIO lookup
>[    1.471777] mdio_bus stmmac-2: No GPIO consumer reset found
>[    1.481872] mdio_bus stmmac-2:01: GPIO lookup for consumer reset
>[    1.481879] mdio_bus stmmac-2:01: using lookup tables for GPIO lookup
>[    1.481881] mdio_bus stmmac-2:01: No GPIO consumer reset found
>[    1.483206] Maxlinear Ethernet GPY215B stmmac-2:01: Firmware Version:
>0x8764 (release)
>
>[    1.683631] Maxlinear Ethernet GPY215B stmmac-2:01: attached PHY driver
>(mii_bus:phy_addr=3Dstmmac-2:01, irq=3DPOLL)
>
>[    1.749607] intel-eth-pci 0000:00:1d.2: stmmac_config_multi_msi: multi =
MSI
>enablement successful
>[    1.749677] intel-eth-pci 0000:00:1d.2: User ID: 0x51, Synopsys ID: 0x5=
2
>[    1.749681] intel-eth-pci 0000:00:1d.2:      DWMAC4/5
>[    1.749688] intel-eth-pci 0000:00:1d.2: DMA HW capability register
>supported
>[    1.749690] intel-eth-pci 0000:00:1d.2: RX Checksum Offload Engine
>supported
>[    1.749692] intel-eth-pci 0000:00:1d.2: TX Checksum insertion supported
>[    1.749693] intel-eth-pci 0000:00:1d.2: TSO supported
>[    1.749694] intel-eth-pci 0000:00:1d.2: Enable RX Mitigation via HW
>Watchdog Timer
>[    1.749701] intel-eth-pci 0000:00:1d.2: device MAC address
>a8:a1:59:9d:2b:46
>[    1.749703] intel-eth-pci 0000:00:1d.2: Enabled L3L4 Flow TC (entries=
=3D2)
>[    1.749705] intel-eth-pci 0000:00:1d.2: Enabled RFS Flow TC (entries=3D=
10)
>[    1.749710] intel-eth-pci 0000:00:1d.2: Enabling HW TC (entries=3D256,
>max_off=3D256)
>[    1.749712] intel-eth-pci 0000:00:1d.2: TSO feature enabled
>[    1.749714] intel-eth-pci 0000:00:1d.2: Using 32 bits DMA width
>
>[    1.749821] mdio_bus stmmac-3: GPIO lookup for consumer reset
>[    1.749823] mdio_bus stmmac-3: using lookup tables for GPIO lookup
>[    1.749825] mdio_bus stmmac-3: No GPIO consumer reset found
>[    1.759184] mdio_bus stmmac-3:01: GPIO lookup for consumer reset
>[    1.759188] mdio_bus stmmac-3:01: using lookup tables for GPIO lookup
>[    1.759190] mdio_bus stmmac-3:01: No GPIO consumer reset found
>[    1.760419] Maxlinear Ethernet GPY215B stmmac-3:01: Firmware Version:
>0x8764 (release)
>
>[    2.025792] intel-eth-pci 0000:00:1e.4: stmmac_config_multi_msi: multi =
MSI
>enablement successful
>[    2.025876] intel-eth-pci 0000:00:1e.4: User ID: 0x51, Synopsys ID: 0x5=
2
>[    2.025881] intel-eth-pci 0000:00:1e.4:      DWMAC4/5
>[    2.025887] sdhci-pci 0000:00:1a.1: No GPIO consumer (null) found
>[    2.025888] intel-eth-pci 0000:00:1e.4: DMA HW capability register
>supported
>[    2.025891] intel-eth-pci 0000:00:1e.4: RX Checksum Offload Engine
>supported
>[    2.025893] intel-eth-pci 0000:00:1e.4: TX Checksum insertion supported
>[    2.025894] intel-eth-pci 0000:00:1e.4: TSO supported
>[    2.025896] intel-eth-pci 0000:00:1e.4: Enable RX Mitigation via HW
>Watchdog Timer
>[    2.025913] intel-eth-pci 0000:00:1e.4: device MAC address
>a8:a1:59:9d:2b:7a
>[    2.025915] intel-eth-pci 0000:00:1e.4: Enabled L3L4 Flow TC (entries=
=3D2)
>[    2.025917] intel-eth-pci 0000:00:1e.4: Enabled RFS Flow TC (entries=3D=
10)
>[    2.025924] intel-eth-pci 0000:00:1e.4: Enabling HW TC (entries=3D256,
>max_off=3D256)
>[    2.025926] intel-eth-pci 0000:00:1e.4: TSO feature enabled
>[    2.025928] intel-eth-pci 0000:00:1e.4: Using 40 bits DMA width
>[    2.026024] mdio_bus stmmac-1: GPIO lookup for consumer reset
>[    2.026027] mdio_bus stmmac-1: using lookup tables for GPIO lookup
>[    2.026029] mdio_bus stmmac-1: No GPIO consumer reset found
>[    2.035547] mdio_bus stmmac-1:01: GPIO lookup for consumer reset
>[    2.035551] mdio_bus stmmac-1:01: using lookup tables for GPIO lookup
>[    2.035553] mdio_bus stmmac-1:01: No GPIO consumer reset found
>[    2.036905] Maxlinear Ethernet GPY215B stmmac-1:01: Firmware Version:
>0x8764 (release)
>
>[    2.239477] Maxlinear Ethernet GPY215B stmmac-1:01: attached PHY driver
>(mii_bus:phy_addr=3Dstmmac-1:01, irq=3DPOLL)
>
>[    2.305510] intel-eth-pci 0000:00:1d.2 eno2: renamed from eth1
>[    2.315038] intel-eth-pci 0000:00:1d.1 eno1: renamed from eth0
>[    2.320776] intel-eth-pci 0000:00:1e.4 eno3: renamed from eth2
>
>[    4.098137] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-0
>[    4.098647] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-1
>[    4.099187] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-2
>[    4.099695] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-3
>[    4.100168] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-4
>[    4.100636] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-5
>[    4.101114] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-6
>[    4.101586] intel-eth-pci 0000:00:1d.1 eno1: Register
>MEM_TYPE_PAGE_POOL RxQ-7
>[    4.111664] dwmac4: Master AXI performs any burst length
>[    4.111750] intel-eth-pci 0000:00:1d.1 eno1: Enabling Safety Features
>[    4.111795] intel-eth-pci 0000:00:1d.1 eno1: IEEE 1588-2008 Advanced
>Timestamp supported
>[    4.111897] intel-eth-pci 0000:00:1d.1 eno1: registered PTP clock
>[    4.112033] intel-eth-pci 0000:00:1d.1 eno1: FPE workqueue start
>[    4.112037] intel-eth-pci 0000:00:1d.1 eno1: configuring for inband/sgm=
ii
>link mode
>[    4.113621] 8021q: adding VLAN 0 to HW filter on device eno1
>
>[    4.118316] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-0
>[    4.118835] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-1
>[    4.119338] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-2
>[    4.119815] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-3
>[    4.120282] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-4
>[    4.120758] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-5
>[    4.121228] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-6
>[    4.121706] intel-eth-pci 0000:00:1d.2 eno2: Register
>MEM_TYPE_PAGE_POOL RxQ-7
>[    4.131662] dwmac4: Master AXI performs any burst length
>[    4.131744] intel-eth-pci 0000:00:1d.2 eno2: Enabling Safety Features
>[    4.131790] intel-eth-pci 0000:00:1d.2 eno2: IEEE 1588-2008 Advanced
>Timestamp supported
>[    4.131873] intel-eth-pci 0000:00:1d.2 eno2: registered PTP clock
>[    4.132010] intel-eth-pci 0000:00:1d.2 eno2: FPE workqueue start
>[    4.132016] intel-eth-pci 0000:00:1d.2 eno2: configuring for
>fixed/1000base-x link mode
>[    4.133517] 8021q: adding VLAN 0 to HW filter on device eno2
>[    4.133677] intel-eth-pci 0000:00:1d.2 eno2: Link is Up - 1Gbps/Full - =
flow
>control off
>[    4.133687] IPv6: ADDRCONF(NETDEV_CHANGE): eno2: link becomes ready
>
>[    4.138058] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-0
>[    4.138557] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-1
>[    4.139105] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-2
>[    4.139581] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-3
>[    4.140071] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-4
>[    4.140547] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-5
>[    4.141041] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-6
>[    4.141519] intel-eth-pci 0000:00:1e.4 eno3: Register
>MEM_TYPE_PAGE_POOL RxQ-7
>[    4.151671] dwmac4: Master AXI performs any burst length
>[    4.151751] intel-eth-pci 0000:00:1e.4 eno3: Enabling Safety Features
>[    4.161830] intel-eth-pci 0000:00:1e.4 eno3: IEEE 1588-2008 Advanced
>Timestamp supported
>[    4.161916] intel-eth-pci 0000:00:1e.4 eno3: registered PTP clock
>[    4.162063] intel-eth-pci 0000:00:1e.4 eno3: FPE workqueue start
>[    4.162069] intel-eth-pci 0000:00:1e.4 eno3: configuring for inband/sgm=
ii
>link mode
>--------------------------------------------------------------------------=
--------------------------------
>-
>
>Also, thanks to Emilio Riva from Ericsson who has been helping me in testi=
ng
>the patch
>on his system too.
>
>Reference:
>[1] https://patchwork.kernel.org/comment/24826650/
>[2] https://patchwork.kernel.org/comment/24827101/
>[3] https://www.kernel.org/doc/html/latest/firmware-
>guide/acpi/dsd/phy.html#mac-node-example-with-a-fixed-link-subnode
>[4] https://www.kernel.org/doc/html/latest/admin-
>guide/acpi/initrd_table_override.html
>
>Thanks
>Boon Leong
>
>Ong Boon Leong (7):
>  net: pcs: xpcs: prepare xpcs_do_config to accept advertising input
>  net: dsa: sja1105: update xpcs_do_config additional input
>  stmmac: intel: prepare to support 1000BASE-X phy interface setting
>  net: pcs: xpcs: add CL37 1000BASE-X AN support
>  net: phylink: unset ovr_an_inband if fixed-link is selected
>  stmmac: intel: add phy-mode ACPI _DSD setting support
>  net: stmmac: make mdio register skips PHY scanning for fixed-link
>
> drivers/net/dsa/sja1105/sja1105_main.c        |   2 +-
> .../net/ethernet/stmicro/stmmac/dwmac-intel.c |  19 +-
> .../net/ethernet/stmicro/stmmac/stmmac_main.c |  11 +-
> .../net/ethernet/stmicro/stmmac/stmmac_mdio.c |  14 ++
> drivers/net/pcs/pcs-xpcs.c                    | 186 +++++++++++++++++-
> drivers/net/phy/phylink.c                     |   4 +-
> include/linux/pcs/pcs-xpcs.h                  |   3 +-
> 7 files changed, 226 insertions(+), 13 deletions(-)
>
>--
>2.25.1