Synopsys DesignWare XPCS is an MMD that can manage link status, auto-negotiation, link training, ... In this commit we add basic support for XPCS using USXGMII interface and Clause 73 Auto-negotiation. This is highly tied with PHYLINK and can't be used without it. A given ethernet driver can use the provided callbacks to add the support for XPCS.
Showing the changes to include/linux (1 of 5 files). Show all
Unified · Split
| @@ -0,0 +1,41 @@ | |||
| 1 | /* SPDX-License-Identifier: GPL-2.0 */ | ||
| 2 | /* | ||
| 3 | * Copyright (c) 2020 Synopsys, Inc. and/or its affiliates. | ||
| 4 | * Synopsys DesignWare XPCS helpers | ||
| 5 | */ | ||
| 6 | |||
| 7 | #ifndef __LINUX_MDIO_XPCS_H | ||
| 8 | #define __LINUX_MDIO_XPCS_H | ||
| 9 | |||
| 10 | #include <linux/phy.h> | ||
| 11 | #include <linux/phylink.h> | ||
| 12 | |||
| 13 | struct mdio_xpcs_args { | ||
| 14 | __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); | ||
| 15 | struct mii_bus *bus; | ||
| 16 | int addr; | ||
| 17 | }; | ||
| 18 | |||
| 19 | struct mdio_xpcs_ops { | ||
| 20 | int (*validate)(struct mdio_xpcs_args *xpcs, | ||
| 21 | unsigned long *supported, | ||
| 22 | struct phylink_link_state *state); | ||
| 23 | int (*config)(struct mdio_xpcs_args *xpcs, | ||
| 24 | const struct phylink_link_state *state); | ||
| 25 | int (*get_state)(struct mdio_xpcs_args *xpcs, | ||
| 26 | struct phylink_link_state *state); | ||
| 27 | int (*link_up)(struct mdio_xpcs_args *xpcs, int speed, | ||
| 28 | phy_interface_t interface); | ||
| 29 | int (*probe)(struct mdio_xpcs_args *xpcs, phy_interface_t interface); | ||
| 30 | }; | ||
| 31 | |||
| 32 | #if IS_ENABLED(CONFIG_MDIO_XPCS) | ||
| 33 | struct mdio_xpcs_ops *mdio_xpcs_get_ops(void); | ||
| 34 | #else | ||
| 35 | static inline struct mdio_xpcs_ops *mdio_xpcs_get_ops(void) | ||
| 36 | { | ||
| 37 | return NULL; | ||
| 38 | } | ||
| 39 | #endif | ||
| 40 | |||
| 41 | #endif /* __LINUX_MDIO_XPCS_H */ | ||