kernel/linux.git/include/linux/pcs, branch v6.6.132

net: pcs: xpcs: support to switch mode for Wangxun NICs

2023-08-25T06:42:58+00:00

According to chapter 6 of DesignWare Cores Ethernet PCS (version 3.20a) and custom design manual, add a configuration flow for switching interface mode. If the interface changes, the following setting is required: 1. wait VR_XS_PCS_DIG_STS bit(4, 2) [PSEQ_STATE] = 100b (Power-Good) 2. write SR_XS_PCS_CTRL2 to select various PCS type 3. write SR_PMA_CTRL1 and/or SR_XS_PCS_CTRL1 for link speed 4. program PMA registers 5. write VR_XS_PCS_DIG_CTRL1 bit(15) [VR_RST] = 1b (Vendor-Specific Soft Reset) 6. wait for VR_XS_PCS_DIG_CTRL1 bit(15) [VR_RST] to get cleared Only 10GBASE-R/SGMII/1000BASE-X modes are planned for the current Wangxun devices. And there is a quirk for Wangxun devices to switch mode although the interface in phylink state has not changed, since PCS will change to default 10GBASE-R when the ethernet driver(txgbe) do LAN reset. Signed-off-by: Jiawen Wu Signed-off-by: David S. Miller

net: pcs: xpcs: add specific vendor supoprt for Wangxun 10Gb NICs

2023-08-25T06:42:58+00:00

Since Wangxun 10Gb NICs require some special configuration on the IP of Synopsys Designware XPCS, introduce dev_flag for different vendors. Read OUI from device identifier registers, to detect Wangxun devices. And xpcs_soft_reset() is skipped to avoid the reset of device identifier registers. Signed-off-by: Jiawen Wu Signed-off-by: David S. Miller

net: pcs: xpcs: update PCS driver to use neg_mode

2023-06-23T02:41:01+00:00

Update xpcs to use neg_mode to configure whether inband negotiation should be used. We need to update sja1105 as well as that directly calls into the XPCS driver's config function. Signed-off-by: Russell King (Oracle) Link: https://lore.kernel.org/r/E1qA8Dt-00EaFS-W9@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski

net: pcs: Add 10GBASE-R mode for Synopsys Designware XPCS

2023-06-08T11:25:10+00:00

Add basic support for XPCS using 10GBASE-R interface. This mode will be extended to use interrupt, so set pcs.poll false. And avoid soft reset so that the device using this mode is in the default configuration. Signed-off-by: Jiawen Wu Reviewed-by: Andrew Lunn Reviewed-by: Maciej Fijalkowski Signed-off-by: Paolo Abeni

net: pcs: xpcs: remove xpcs_create() from public view

2023-06-05T10:26:02+00:00

There are now no callers of xpcs_create(), so let's remove it from public view to discourage future direct usage. Signed-off-by: Russell King (Oracle) Reviewed-by: Vladimir Oltean Signed-off-by: David S. Miller

net: pcs: xpcs: add xpcs_create_mdiodev()

2023-05-30T04:46:53+00:00

Add xpcs_create_mdiodev() to simplify the creation of the mdio device associated with the XPCS. In order to allow xpcs_destroy() to clean this up, we need to arrange for xpcs_create() to take a refcount on the mdiodev, and xpcs_destroy() to put it. Adding the refcounting to xpcs_create()..xpcs_destroy() will be transparent to existing users of these interfaces. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Signed-off-by: Jakub Kicinski

net: pcs: add driver for MediaTek SGMII PCS

2023-03-21T02:48:26+00:00

The SGMII core found in several MediaTek SoCs is identical to what can also be found in MediaTek's MT7531 Ethernet switch IC. As this has not always been clear, both drivers developed different implementations to deal with the PCS. Recently Alexander Couzens pointed out this fact which lead to the development of this shared driver. Add a dedicated driver, mostly by copying the code now found in the Ethernet driver. The now redundant code will be removed by a follow-up commit. Suggested-by: Alexander Couzens Suggested-by: Russell King (Oracle) Signed-off-by: Daniel Golle Tested-by: Frank Wunderlich Reviewed-by: Russell King (Oracle) Signed-off-by: Jakub Kicinski

net: pcs: xpcs: add CL37 1000BASE-X AN support

2022-06-17T09:55:35+00:00

For CL37 1000BASE-X AN, DW xPCS does not support C22 method but offers C45 vendor-specific MII MMD for programming. We also add the ability to disable Autoneg (through ethtool for certain network switch that supports 1000BASE-X (1000Mbps and Full-Duplex) but not Autoneg capability. v4: Fixes to comment from Russell King. Thanks! https://patchwork.kernel.org/comment/24894239/ Make xpcs_modify_changed() as private, change to use mdiodev_modify_changed() for cleaner code. v3: Fixes to issues spotted by Russell King. Thanks! https://patchwork.kernel.org/comment/24890210/ Use phylink_mii_c22_pcs_decode_state(), remove unnecessary interrupt clearing and skip speed & duplex setting if AN is enabled. v2: Fixes to issues spotted by Russell King in v1. Thanks! https://patchwork.kernel.org/comment/24826650/ Use phylink_mii_c22_pcs_encode_advertisement() and implement C45 MII ADV handling since IP only support C45 access. Tested-by: Emilio Riva Signed-off-by: Ong Boon Leong Reviewed-by: Russell King (Oracle) Signed-off-by: David S. Miller

net: make xpcs_do_config to accept advertising for pcs-xpcs and sja1105

2022-06-17T09:55:35+00:00

xpcs_config() has 'advertising' input that is required for C37 1000BASE-X AN in later patch series. So, we prepare xpcs_do_config() for it. For sja1105, xpcs_do_config() is used for xpcs configuration without depending on advertising input, so set to NULL. Reported-by: kernel test robot Signed-off-by: Ong Boon Leong Signed-off-by: David S. Miller

net: stmmac/xpcs: convert to pcs_validate()

2022-01-26T11:20:37+00:00

stmmac explicitly calls the xpcs driver to validate the ethtool linkmodes. This is no longer necessary as phylink now supports validation through a PCS method. Convert both drivers to use this new mechanism. Tested-by: Wong Vee Khee # Intel EHL Signed-off-by: Russell King (Oracle) Signed-off-by: David S. Miller