182 lines
4.0 KiB
C
182 lines
4.0 KiB
C
/*
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* net/dsa/dsa_priv.h - Hardware switch handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __DSA_PRIV_H
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#define __DSA_PRIV_H
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#include <linux/list.h>
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#include <linux/phy.h>
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#include <net/dsa.h>
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struct dsa_switch {
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/*
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* Parent switch tree, and switch index.
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*/
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struct dsa_switch_tree *dst;
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int index;
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/*
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* Configuration data for this switch.
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*/
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struct dsa_chip_data *pd;
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/*
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* The used switch driver.
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*/
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struct dsa_switch_driver *drv;
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/*
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* Reference to mii bus to use.
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*/
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struct mii_bus *master_mii_bus;
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/*
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* Slave mii_bus and devices for the individual ports.
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*/
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u32 dsa_port_mask;
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u32 phys_port_mask;
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struct mii_bus *slave_mii_bus;
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struct net_device *ports[DSA_MAX_PORTS];
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};
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struct dsa_switch_tree {
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/*
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* Configuration data for the platform device that owns
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* this dsa switch tree instance.
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*/
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struct dsa_platform_data *pd;
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/*
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* Reference to network device to use, and which tagging
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* protocol to use.
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*/
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struct net_device *master_netdev;
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__be16 tag_protocol;
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/*
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* The switch and port to which the CPU is attached.
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*/
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s8 cpu_switch;
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s8 cpu_port;
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/*
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* Link state polling.
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*/
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int link_poll_needed;
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struct work_struct link_poll_work;
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struct timer_list link_poll_timer;
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/*
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* Data for the individual switch chips.
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*/
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struct dsa_switch *ds[DSA_MAX_SWITCHES];
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};
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static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
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{
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return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
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}
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static inline u8 dsa_upstream_port(struct dsa_switch *ds)
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{
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struct dsa_switch_tree *dst = ds->dst;
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/*
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* If this is the root switch (i.e. the switch that connects
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* to the CPU), return the cpu port number on this switch.
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* Else return the (DSA) port number that connects to the
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* switch that is one hop closer to the cpu.
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*/
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if (dst->cpu_switch == ds->index)
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return dst->cpu_port;
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else
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return ds->pd->rtable[dst->cpu_switch];
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}
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struct dsa_slave_priv {
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/*
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* The linux network interface corresponding to this
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* switch port.
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*/
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struct net_device *dev;
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/*
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* Which switch this port is a part of, and the port index
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* for this port.
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*/
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struct dsa_switch *parent;
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u8 port;
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/*
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* The phylib phy_device pointer for the PHY connected
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* to this port.
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*/
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struct phy_device *phy;
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};
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struct dsa_switch_driver {
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struct list_head list;
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__be16 tag_protocol;
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int priv_size;
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/*
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* Probing and setup.
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*/
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char *(*probe)(struct mii_bus *bus, int sw_addr);
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int (*setup)(struct dsa_switch *ds);
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int (*set_addr)(struct dsa_switch *ds, u8 *addr);
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/*
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* Access to the switch's PHY registers.
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*/
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int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
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int (*phy_write)(struct dsa_switch *ds, int port,
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int regnum, u16 val);
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/*
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* Link state polling and IRQ handling.
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*/
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void (*poll_link)(struct dsa_switch *ds);
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/*
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* ethtool hardware statistics.
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*/
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void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
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void (*get_ethtool_stats)(struct dsa_switch *ds,
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int port, uint64_t *data);
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int (*get_sset_count)(struct dsa_switch *ds);
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};
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/* dsa.c */
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extern char dsa_driver_version[];
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void register_switch_driver(struct dsa_switch_driver *type);
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void unregister_switch_driver(struct dsa_switch_driver *type);
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/* slave.c */
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void dsa_slave_mii_bus_init(struct dsa_switch *ds);
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struct net_device *dsa_slave_create(struct dsa_switch *ds,
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struct device *parent,
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int port, char *name);
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/* tag_dsa.c */
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netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev);
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/* tag_edsa.c */
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netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev);
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/* tag_trailer.c */
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netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev);
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#endif
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