2 * net/dsa/dsa_priv.h - Hardware switch handling
3 * Copyright (c) 2008-2009 Marvell Semiconductor
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
14 #include <linux/list.h>
15 #include <linux/phy.h>
16 #include <linux/timer.h>
17 #include <linux/workqueue.h>
22 * Parent switch tree, and switch index.
24 struct dsa_switch_tree *dst;
28 * Configuration data for this switch.
30 struct dsa_chip_data *pd;
33 * The used switch driver.
35 struct dsa_switch_driver *drv;
38 * Reference to mii bus to use.
40 struct mii_bus *master_mii_bus;
43 * Slave mii_bus and devices for the individual ports.
47 struct mii_bus *slave_mii_bus;
48 struct net_device *ports[DSA_MAX_PORTS];
51 struct dsa_switch_tree {
53 * Configuration data for the platform device that owns
54 * this dsa switch tree instance.
56 struct dsa_platform_data *pd;
59 * Reference to network device to use, and which tagging
62 struct net_device *master_netdev;
66 * The switch and port to which the CPU is attached.
75 struct work_struct link_poll_work;
76 struct timer_list link_poll_timer;
79 * Data for the individual switch chips.
81 struct dsa_switch *ds[DSA_MAX_SWITCHES];
84 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
86 return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
89 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
91 struct dsa_switch_tree *dst = ds->dst;
94 * If this is the root switch (i.e. the switch that connects
95 * to the CPU), return the cpu port number on this switch.
96 * Else return the (DSA) port number that connects to the
97 * switch that is one hop closer to the cpu.
99 if (dst->cpu_switch == ds->index)
100 return dst->cpu_port;
102 return ds->pd->rtable[dst->cpu_switch];
105 struct dsa_slave_priv {
107 * The linux network interface corresponding to this
110 struct net_device *dev;
113 * Which switch this port is a part of, and the port index
116 struct dsa_switch *parent;
120 * The phylib phy_device pointer for the PHY connected
123 struct phy_device *phy;
126 struct dsa_switch_driver {
127 struct list_head list;
135 char *(*probe)(struct mii_bus *bus, int sw_addr);
136 int (*setup)(struct dsa_switch *ds);
137 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
140 * Access to the switch's PHY registers.
142 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
143 int (*phy_write)(struct dsa_switch *ds, int port,
144 int regnum, u16 val);
147 * Link state polling and IRQ handling.
149 void (*poll_link)(struct dsa_switch *ds);
152 * ethtool hardware statistics.
154 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
155 void (*get_ethtool_stats)(struct dsa_switch *ds,
156 int port, uint64_t *data);
157 int (*get_sset_count)(struct dsa_switch *ds);
161 extern char dsa_driver_version[];
162 void register_switch_driver(struct dsa_switch_driver *type);
163 void unregister_switch_driver(struct dsa_switch_driver *type);
166 void dsa_slave_mii_bus_init(struct dsa_switch *ds);
167 struct net_device *dsa_slave_create(struct dsa_switch *ds,
168 struct device *parent,
169 int port, char *name);
172 netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev);
175 netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev);
178 netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev);