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