kernel/linux.git/include/linux/pcs/pcs-xpcs.h, 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: 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

net: xpcs: add support for retrieving supported interface modes

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

Add a function to the xpcs driver to retrieve the supported PHY interface modes, which can be used by drivers to fill in phylink's supported_interfaces mask. We validate the interface bit index to ensure that it fits within the bitmap as xpcs lists PHY_INTERFACE_MODE_MAX in an entry. Tested-by: Wong Vee Khee # Intel EHL Signed-off-by: Russell King (Oracle) Signed-off-by: David S. Miller