The main goal of this series is to extend the DW XPCS device support in the kernel. Particularly the patchset adds a support of the DW XPCS device with the MCI/APB3 IO interface registered as a platform device. In order to have them utilized by the DW XPCS core the fwnode-based DW XPCS descriptor creation procedure has been introduced. Finally the STMMAC driver has been altered to support the DW XPCS passed via the 'pcs-handle' property. Note the series has been significantly re-developed since v1. So I even had to change the subject. Anyway I've done my best to take all the noted into account. The series traditionally starts with a set of the preparation patches. First one just moves the generic DW XPCS IDs macros from the internal header file to the external one where some other IDs also reside. Second patch splits up the xpcs_create() method to a set of the coherent sub-functions for the sake of the further easier updates and to have it looking less complicated. The goal of the next three patches is to extend the DW XPCS ID management code by defining a new dw_xpcs_info structure with both PCS and PMA IDs. The next two patches provide the DW XPCS device DT-bindings and the respective platform-device driver for the memory-mapped DW XPCS devices. Besides the later patch makes use of the introduced dw_xpcs_info structure to pre-define the DW XPCS IDs based on the platform-device compatible string. Thus if there is no way to auto-identify the XPCS device capabilities it can be done based on the custom device IDs passed via the MDIO-device platform data. Final DW XPCS driver change is about adding a new method of the DW XPCS descriptor creation. The xpcs_create_fwnode() function has been introduced with the same semantics as a similar method recently added to the Lynx PCS driver. It's supposed to be called with the fwnode pointing to the DW XPCS device node, for which the XPCS descriptor will be created. The series is terminated with two STMMAC driver patches. The former one simplifies the DW XPCS descriptor registration procedure by dropping the MDIO-bus scanning and creating the descriptor for the particular device address. The later patch alters the STMMAC PCS setup method so one would support the DW XPCS specified via the "pcs-handle" property. That's it for now. Thanks for review in advance. Any tests are very welcome. After this series is merged in, I'll submit another one which adds the generic 10GBase-R and 10GBase-X interfaces support to the STMMAC and DW XPCS driver with the proper CSRs re-initialization, PMA initialization and reference clock selection as it's described in the Synopsys DW XPCS HW manual. Link: https://lore.kernel.org/netdev/20231205103559.9605-1-fancer.lancer@xxxxxxxxx Changelog v2: - Drop the patches: [PATCH net-next 01/16] net: pcs: xpcs: Drop sentinel entry from 2500basex ifaces list [PATCH net-next 02/16] net: pcs: xpcs: Drop redundant workqueue.h include directive [PATCH net-next 03/16] net: pcs: xpcs: Return EINVAL in the internal methods [PATCH net-next 04/16] net: pcs: xpcs: Explicitly return error on caps validation as ones have already been merged into the kernel repo: Link: https://lore.kernel.org/netdev/20240222175843.26919-1-fancer.lancer@xxxxxxxxx/ - Drop the patches: [PATCH net-next 14/16] net: stmmac: Pass netdev to XPCS setup function [PATCH net-next 15/16] net: stmmac: Add dedicated XPCS cleanup method as ones have already been merged into the kernel repo: Link: https://lore.kernel.org/netdev/20240513-rzn1-gmac1-v7-0-6acf58b5440d@xxxxxxxxxxx/ - Drop the patch: [PATCH net-next 06/16] net: pcs: xpcs: Avoid creating dummy XPCS MDIO device [PATCH net-next 09/16] net: mdio: Add Synopsys DW XPCS management interface support [PATCH net-next 11/16] net: pcs: xpcs: Change xpcs_create_mdiodev() suffix to "byaddr" [PATCH net-next 13/16] net: stmmac: intel: Register generic MDIO device as no longer relevant. - Add new patches: [PATCH net-next v2 03/10] net: pcs: xpcs: Convert xpcs_id to dw_xpcs_desc [PATCH net-next v2 04/10] net: pcs: xpcs: Convert xpcs_compat to dw_xpcs_compat [PATCH net-next v2 05/10] net: pcs: xpcs: Introduce DW XPCS info structure [PATCH net-next v2 09/10] net: stmmac: Create DW XPCS device with particular address - Use the xpcs_create_fwnode() function name and semantics similar to the Lynx PCS driver. - Add kdoc describing the DW XPCS registration functions. - Convert the memory-mapped DW XPCS device driver to being the platform-device driver. - Convert the DW XPCS DT-bindings to defining both memory-mapped and MDIO devices. - Drop inline'es from the methods statically defined in *.c. (@Maxime) - Preserve the strict refcount-ing pattern. (@Russell) Link: https://lore.kernel.org/netdev/20240602143636.5839-1-fancer.lancer@xxxxxxxxx/ Changelov v3: - Implement the ordered clocks constraint. (@Rob) - Convert xpcs_plat_pm_ops to being defined as static. (@Simon) - Add the "@interface" argument kdoc to the xpcs_create_mdiodev() function. (@Simon) - Fix the "@fwnode" argument name in the xpcs_create_fwnode() method kdoc. (@Simon) - Move the return value descriptions to the "Return:" section of the xpcs_create_mdiodev() and xpcs_create_fwnode() kdoc. (@Simon) - Drop stmmac_mdio_bus_data::has_xpcs flag and define the PCS-address mask with particular XPCS address instead. Signed-off-by: Serge Semin <fancer.lancer@xxxxxxxxx> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: Eric Dumazet <edumazet@xxxxxxxxxx> Cc: Jakub Kicinski <kuba@xxxxxxxxxx> Cc: Paolo Abeni <pabeni@xxxxxxxxxx> Cc: Sagar Cheluvegowda <quic_scheluve@xxxxxxxxxxx> Cc: Abhishek Chauhan <quic_abchauha@xxxxxxxxxxx> Cc: Andrew Halaney <ahalaney@xxxxxxxxxx> Cc: Jiawen Wu <jiawenwu@xxxxxxxxxxxxxx> Cc: Mengyuan Lou <mengyuanlou@xxxxxxxxxxxxx> Cc: Tomer Maimon <tmaimon77@xxxxxxxxx> Cc: openbmc@xxxxxxxxxxxxxxxx Cc: netdev@xxxxxxxxxxxxxxx Cc: devicetree@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Serge Semin (10): net: pcs: xpcs: Move native device ID macro to linux/pcs/pcs-xpcs.h net: pcs: xpcs: Split up xpcs_create() body to sub-functions net: pcs: xpcs: Convert xpcs_id to dw_xpcs_desc net: pcs: xpcs: Convert xpcs_compat to dw_xpcs_compat net: pcs: xpcs: Introduce DW XPCS info structure dt-bindings: net: Add Synopsys DW xPCS bindings net: pcs: xpcs: Add Synopsys DW xPCS platform device driver net: pcs: xpcs: Add fwnode-based descriptor creation method net: stmmac: Create DW XPCS device with particular address net: stmmac: Add DW XPCS specified via "pcs-handle" support .../bindings/net/pcs/snps,dw-xpcs.yaml | 136 ++++++ .../net/ethernet/stmicro/stmmac/dwmac-intel.c | 2 +- .../net/ethernet/stmicro/stmmac/stmmac_mdio.c | 32 +- drivers/net/pcs/Kconfig | 6 +- drivers/net/pcs/Makefile | 3 +- drivers/net/pcs/pcs-xpcs-plat.c | 460 ++++++++++++++++++ drivers/net/pcs/pcs-xpcs.c | 361 +++++++++----- drivers/net/pcs/pcs-xpcs.h | 7 +- include/linux/pcs/pcs-xpcs.h | 49 +- include/linux/stmmac.h | 2 +- 10 files changed, 910 insertions(+), 148 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/pcs/snps,dw-xpcs.yaml create mode 100644 drivers/net/pcs/pcs-xpcs-plat.c -- 2.43.0
