net/dsa/dsa_priv.h

   1 /*
   2  * net/dsa/dsa_priv.h - Hardware switch handling
   3  * Copyright (c) 2008 Marvell Semiconductor
   4  *
   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.
   9  */
  10
  11 #ifndef __DSA_PRIV_H
  12 #define __DSA_PRIV_H
  13
  14 #include <linux/list.h>
  15 #include <linux/phy.h>
  16 #include <linux/timer.h>
  17 #include <linux/workqueue.h>
  18 #include <net/dsa.h>
  19
  20 struct dsa_switch {
  21         /*
  22          * Configuration data for the platform device that owns
  23          * this dsa switch instance.
  24          */
  25         struct dsa_platform_data        *pd;
  26
  27         /*
  28          * References to network device and mii bus to use.
  29          */
  30         struct net_device               *master_netdev;
  31         struct mii_bus                  *master_mii_bus;
  32
  33         /*
  34          * The used switch driver and frame tagging type.
  35          */
  36         struct dsa_switch_driver        *drv;
  37         __be16                          tag_protocol;
  38
  39         /*
  40          * Slave mii_bus and devices for the individual ports.
  41          */
  42         int                             cpu_port;
  43         u32                             valid_port_mask;
  44         struct mii_bus                  *slave_mii_bus;
  45         struct net_device               *ports[DSA_MAX_PORTS];
  46
  47         /*
  48          * Link state polling.
  49          */
  50         struct work_struct              link_poll_work;
  51         struct timer_list               link_poll_timer;
  52 };
  53
  54 struct dsa_slave_priv {
  55         struct net_device       *dev;
  56         struct dsa_switch       *parent;
  57         int                     port;
  58         struct phy_device       *phy;
  59 };
  60
  61 struct dsa_switch_driver {
  62         struct list_head        list;
  63
  64         __be16                  tag_protocol;
  65         int                     priv_size;
  66
  67         /*
  68          * Probing and setup.
  69          */
  70         char    *(*probe)(struct mii_bus *bus, int sw_addr);
  71         int     (*setup)(struct dsa_switch *ds);
  72         int     (*set_addr)(struct dsa_switch *ds, u8 *addr);
  73
  74         /*
  75          * Access to the switch's PHY registers.
  76          */
  77         int     (*phy_read)(struct dsa_switch *ds, int port, int regnum);
  78         int     (*phy_write)(struct dsa_switch *ds, int port,
  79                              int regnum, u16 val);
  80
  81         /*
  82          * Link state polling and IRQ handling.
  83          */
  84         void    (*poll_link)(struct dsa_switch *ds);
  85
  86         /*
  87          * ethtool hardware statistics.
  88          */
  89         void    (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
  90         void    (*get_ethtool_stats)(struct dsa_switch *ds,
  91                                      int port, uint64_t *data);
  92         int     (*get_sset_count)(struct dsa_switch *ds);
  93 };
  94
  95 /* dsa.c */
  96 extern char dsa_driver_version[];
  97 void register_switch_driver(struct dsa_switch_driver *type);
  98 void unregister_switch_driver(struct dsa_switch_driver *type);
  99
 100 /* slave.c */
 101 void dsa_slave_mii_bus_init(struct dsa_switch *ds);
 102 struct net_device *dsa_slave_create(struct dsa_switch *ds,
 103                                     struct device *parent,
 104                                     int port, char *name);
 105
 106 /* tag_dsa.c */
 107 int dsa_xmit(struct sk_buff *skb, struct net_device *dev);
 108
 109 /* tag_edsa.c */
 110 int edsa_xmit(struct sk_buff *skb, struct net_device *dev);
 111
 112 /* tag_trailer.c */
 113 int trailer_xmit(struct sk_buff *skb, struct net_device *dev);
 114
 115
 116 #endif