// SPDX-License-Identifier: GPL-2.0 /* * Microchip KSZ9477 switch driver main logic * * Copyright (C) 2017-2019 Microchip Technology Inc. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/iopoll.h> #include <linux/platform_data/microchip-ksz.h> #include <linux/phy.h> #include <linux/if_bridge.h> #include <linux/if_vlan.h> #include <net/dsa.h> #include <net/switchdev.h> #include "ksz9477_reg.h" #include "ksz_common.h" #include "ksz9477.h" static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set) { … } static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits, bool set) { … } static void ksz9477_cfg32(struct ksz_device *dev, u32 addr, u32 bits, bool set) { … } static void ksz9477_port_cfg32(struct ksz_device *dev, int port, int offset, u32 bits, bool set) { … } int ksz9477_change_mtu(struct ksz_device *dev, int port, int mtu) { … } /** * ksz9477_handle_wake_reason - Handle wake reason on a specified port. * @dev: The device structure. * @port: The port number. * * This function reads the PME (Power Management Event) status register of a * specified port to determine the wake reason. If there is no wake event, it * returns early. Otherwise, it logs the wake reason which could be due to a * "Magic Packet", "Link Up", or "Energy Detect" event. The PME status register * is then cleared to acknowledge the handling of the wake event. * * Return: 0 on success, or an error code on failure. */ static int ksz9477_handle_wake_reason(struct ksz_device *dev, int port) { … } /** * ksz9477_get_wol - Get Wake-on-LAN settings for a specified port. * @dev: The device structure. * @port: The port number. * @wol: Pointer to ethtool Wake-on-LAN settings structure. * * This function checks the PME Pin Control Register to see if PME Pin Output * Enable is set, indicating PME is enabled. If enabled, it sets the supported * and active WoL flags. */ void ksz9477_get_wol(struct ksz_device *dev, int port, struct ethtool_wolinfo *wol) { … } /** * ksz9477_set_wol - Set Wake-on-LAN settings for a specified port. * @dev: The device structure. * @port: The port number. * @wol: Pointer to ethtool Wake-on-LAN settings structure. * * This function configures Wake-on-LAN (WoL) settings for a specified port. * It validates the provided WoL options, checks if PME is enabled via the * switch's PME Pin Control Register, clears any previous wake reasons, * and sets the Magic Packet flag in the port's PME control register if * specified. * * Return: 0 on success, or other error codes on failure. */ int ksz9477_set_wol(struct ksz_device *dev, int port, struct ethtool_wolinfo *wol) { … } /** * ksz9477_wol_pre_shutdown - Prepares the switch device for shutdown while * considering Wake-on-LAN (WoL) settings. * @dev: The switch device structure. * @wol_enabled: Pointer to a boolean which will be set to true if WoL is * enabled on any port. * * This function prepares the switch device for a safe shutdown while taking * into account the Wake-on-LAN (WoL) settings on the user ports. It updates * the wol_enabled flag accordingly to reflect whether WoL is active on any * port. */ void ksz9477_wol_pre_shutdown(struct ksz_device *dev, bool *wol_enabled) { … } static int ksz9477_wait_vlan_ctrl_ready(struct ksz_device *dev) { … } static int ksz9477_get_vlan_table(struct ksz_device *dev, u16 vid, u32 *vlan_table) { … } static int ksz9477_set_vlan_table(struct ksz_device *dev, u16 vid, u32 *vlan_table) { … } static void ksz9477_read_table(struct ksz_device *dev, u32 *table) { … } static void ksz9477_write_table(struct ksz_device *dev, u32 *table) { … } static int ksz9477_wait_alu_ready(struct ksz_device *dev) { … } static int ksz9477_wait_alu_sta_ready(struct ksz_device *dev) { … } int ksz9477_reset_switch(struct ksz_device *dev) { … } void ksz9477_r_mib_cnt(struct ksz_device *dev, int port, u16 addr, u64 *cnt) { … } void ksz9477_r_mib_pkt(struct ksz_device *dev, int port, u16 addr, u64 *dropped, u64 *cnt) { … } void ksz9477_freeze_mib(struct ksz_device *dev, int port, bool freeze) { … } int ksz9477_errata_monitor(struct ksz_device *dev, int port, u64 tx_late_col) { … } void ksz9477_port_init_cnt(struct ksz_device *dev, int port) { … } static void ksz9477_r_phy_quirks(struct ksz_device *dev, u16 addr, u16 reg, u16 *data) { … } int ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data) { … } int ksz9477_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val) { … } void ksz9477_cfg_port_member(struct ksz_device *dev, int port, u8 member) { … } void ksz9477_flush_dyn_mac_table(struct ksz_device *dev, int port) { … } int ksz9477_port_vlan_filtering(struct ksz_device *dev, int port, bool flag, struct netlink_ext_ack *extack) { … } int ksz9477_port_vlan_add(struct ksz_device *dev, int port, const struct switchdev_obj_port_vlan *vlan, struct netlink_ext_ack *extack) { … } int ksz9477_port_vlan_del(struct ksz_device *dev, int port, const struct switchdev_obj_port_vlan *vlan) { … } int ksz9477_fdb_add(struct ksz_device *dev, int port, const unsigned char *addr, u16 vid, struct dsa_db db) { … } int ksz9477_fdb_del(struct ksz_device *dev, int port, const unsigned char *addr, u16 vid, struct dsa_db db) { … } static void ksz9477_convert_alu(struct alu_struct *alu, u32 *alu_table) { … } int ksz9477_fdb_dump(struct ksz_device *dev, int port, dsa_fdb_dump_cb_t *cb, void *data) { … } int ksz9477_mdb_add(struct ksz_device *dev, int port, const struct switchdev_obj_port_mdb *mdb, struct dsa_db db) { … } int ksz9477_mdb_del(struct ksz_device *dev, int port, const struct switchdev_obj_port_mdb *mdb, struct dsa_db db) { … } int ksz9477_port_mirror_add(struct ksz_device *dev, int port, struct dsa_mall_mirror_tc_entry *mirror, bool ingress, struct netlink_ext_ack *extack) { … } void ksz9477_port_mirror_del(struct ksz_device *dev, int port, struct dsa_mall_mirror_tc_entry *mirror) { … } static phy_interface_t ksz9477_get_interface(struct ksz_device *dev, int port) { … } void ksz9477_get_caps(struct ksz_device *dev, int port, struct phylink_config *config) { … } int ksz9477_set_ageing_time(struct ksz_device *dev, unsigned int msecs) { … } void ksz9477_port_queue_split(struct ksz_device *dev, int port) { … } void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port) { … } void ksz9477_config_cpu_port(struct dsa_switch *ds) { … } int ksz9477_enable_stp_addr(struct ksz_device *dev) { … } int ksz9477_setup(struct dsa_switch *ds) { … } u32 ksz9477_get_port_addr(int port, int offset) { … } int ksz9477_tc_cbs_set_cinc(struct ksz_device *dev, int port, u32 val) { … } /* The KSZ9477 provides following HW features to accelerate * HSR frames handling: * * 1. TX PACKET DUPLICATION FROM HOST TO SWITCH * 2. RX PACKET DUPLICATION DISCARDING * 3. PREVENTING PACKET LOOP IN THE RING BY SELF-ADDRESS FILTERING * * Only one from point 1. has the NETIF_F* flag available. * * Ones from point 2 and 3 are "best effort" - i.e. those will * work correctly most of the time, but it may happen that some * frames will not be caught - to be more specific; there is a race * condition in hardware such that, when duplicate packets are received * on member ports very close in time to each other, the hardware fails * to detect that they are duplicates. * * Hence, the SW needs to handle those special cases. However, the speed * up gain is considerable when above features are used. * * Moreover, the NETIF_F_HW_HSR_FWD feature is also enabled, as HSR frames * can be forwarded in the switch fabric between HSR ports. */ #define KSZ9477_SUPPORTED_HSR_FEATURES … void ksz9477_hsr_join(struct dsa_switch *ds, int port, struct net_device *hsr) { … } void ksz9477_hsr_leave(struct dsa_switch *ds, int port, struct net_device *hsr) { … } int ksz9477_switch_init(struct ksz_device *dev) { … } void ksz9477_switch_exit(struct ksz_device *dev) { … } MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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