351 строка
8.9 KiB
C
351 строка
8.9 KiB
C
/*
|
|
* include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
|
|
* 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 __LINUX_NET_DSA_H
|
|
#define __LINUX_NET_DSA_H
|
|
|
|
#include <linux/if_ether.h>
|
|
#include <linux/list.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/phy_fixed.h>
|
|
#include <linux/ethtool.h>
|
|
|
|
enum dsa_tag_protocol {
|
|
DSA_TAG_PROTO_NONE = 0,
|
|
DSA_TAG_PROTO_DSA,
|
|
DSA_TAG_PROTO_TRAILER,
|
|
DSA_TAG_PROTO_EDSA,
|
|
DSA_TAG_PROTO_BRCM,
|
|
};
|
|
|
|
#define DSA_MAX_SWITCHES 4
|
|
#define DSA_MAX_PORTS 12
|
|
|
|
struct dsa_chip_data {
|
|
/*
|
|
* How to access the switch configuration registers.
|
|
*/
|
|
struct device *host_dev;
|
|
int sw_addr;
|
|
|
|
/* set to size of eeprom if supported by the switch */
|
|
int eeprom_len;
|
|
|
|
/* Device tree node pointer for this specific switch chip
|
|
* used during switch setup in case additional properties
|
|
* and resources needs to be used
|
|
*/
|
|
struct device_node *of_node;
|
|
|
|
/*
|
|
* The names of the switch's ports. Use "cpu" to
|
|
* designate the switch port that the cpu is connected to,
|
|
* "dsa" to indicate that this port is a DSA link to
|
|
* another switch, NULL to indicate the port is unused,
|
|
* or any other string to indicate this is a physical port.
|
|
*/
|
|
char *port_names[DSA_MAX_PORTS];
|
|
struct device_node *port_dn[DSA_MAX_PORTS];
|
|
|
|
/*
|
|
* An array (with nr_chips elements) of which element [a]
|
|
* indicates which port on this switch should be used to
|
|
* send packets to that are destined for switch a. Can be
|
|
* NULL if there is only one switch chip.
|
|
*/
|
|
s8 *rtable;
|
|
|
|
/*
|
|
* A switch may have a GPIO line tied to its reset pin. Parse
|
|
* this from the device tree, and use it before performing
|
|
* switch soft reset.
|
|
*/
|
|
struct gpio_desc *reset;
|
|
};
|
|
|
|
struct dsa_platform_data {
|
|
/*
|
|
* Reference to a Linux network interface that connects
|
|
* to the root switch chip of the tree.
|
|
*/
|
|
struct device *netdev;
|
|
struct net_device *of_netdev;
|
|
|
|
/*
|
|
* Info structs describing each of the switch chips
|
|
* connected via this network interface.
|
|
*/
|
|
int nr_chips;
|
|
struct dsa_chip_data *chip;
|
|
};
|
|
|
|
struct packet_type;
|
|
|
|
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;
|
|
int (*rcv)(struct sk_buff *skb,
|
|
struct net_device *dev,
|
|
struct packet_type *pt,
|
|
struct net_device *orig_dev);
|
|
enum dsa_tag_protocol tag_protocol;
|
|
|
|
/*
|
|
* The switch and port to which the CPU is attached.
|
|
*/
|
|
s8 cpu_switch;
|
|
s8 cpu_port;
|
|
|
|
/*
|
|
* Data for the individual switch chips.
|
|
*/
|
|
struct dsa_switch *ds[DSA_MAX_SWITCHES];
|
|
};
|
|
|
|
struct dsa_switch {
|
|
/*
|
|
* Parent switch tree, and switch index.
|
|
*/
|
|
struct dsa_switch_tree *dst;
|
|
int index;
|
|
|
|
/*
|
|
* Tagging protocol understood by this switch
|
|
*/
|
|
enum dsa_tag_protocol tag_protocol;
|
|
|
|
/*
|
|
* Configuration data for this switch.
|
|
*/
|
|
struct dsa_chip_data *pd;
|
|
|
|
/*
|
|
* The used switch driver.
|
|
*/
|
|
struct dsa_switch_driver *drv;
|
|
|
|
/*
|
|
* Reference to host device to use.
|
|
*/
|
|
struct device *master_dev;
|
|
|
|
#ifdef CONFIG_NET_DSA_HWMON
|
|
/*
|
|
* Hardware monitoring information
|
|
*/
|
|
char hwmon_name[IFNAMSIZ + 8];
|
|
struct device *hwmon_dev;
|
|
#endif
|
|
|
|
/*
|
|
* Slave mii_bus and devices for the individual ports.
|
|
*/
|
|
u32 dsa_port_mask;
|
|
u32 phys_port_mask;
|
|
u32 phys_mii_mask;
|
|
struct mii_bus *slave_mii_bus;
|
|
struct net_device *ports[DSA_MAX_PORTS];
|
|
};
|
|
|
|
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 bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
|
|
{
|
|
return !!((ds->dsa_port_mask) & (1 << p));
|
|
}
|
|
|
|
static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
|
|
{
|
|
return ds->phys_port_mask & (1 << p) && ds->ports[p];
|
|
}
|
|
|
|
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 switchdev_trans;
|
|
struct switchdev_obj;
|
|
struct switchdev_obj_port_fdb;
|
|
struct switchdev_obj_port_vlan;
|
|
|
|
struct dsa_switch_driver {
|
|
struct list_head list;
|
|
|
|
enum dsa_tag_protocol tag_protocol;
|
|
int priv_size;
|
|
|
|
/*
|
|
* Probing and setup.
|
|
*/
|
|
char *(*probe)(struct device *host_dev, int sw_addr);
|
|
int (*setup)(struct dsa_switch *ds);
|
|
int (*set_addr)(struct dsa_switch *ds, u8 *addr);
|
|
u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
|
|
|
|
/*
|
|
* 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 adjustment (called from libphy)
|
|
*/
|
|
void (*adjust_link)(struct dsa_switch *ds, int port,
|
|
struct phy_device *phydev);
|
|
void (*fixed_link_update)(struct dsa_switch *ds, int port,
|
|
struct fixed_phy_status *st);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* ethtool Wake-on-LAN
|
|
*/
|
|
void (*get_wol)(struct dsa_switch *ds, int port,
|
|
struct ethtool_wolinfo *w);
|
|
int (*set_wol)(struct dsa_switch *ds, int port,
|
|
struct ethtool_wolinfo *w);
|
|
|
|
/*
|
|
* Suspend and resume
|
|
*/
|
|
int (*suspend)(struct dsa_switch *ds);
|
|
int (*resume)(struct dsa_switch *ds);
|
|
|
|
/*
|
|
* Port enable/disable
|
|
*/
|
|
int (*port_enable)(struct dsa_switch *ds, int port,
|
|
struct phy_device *phy);
|
|
void (*port_disable)(struct dsa_switch *ds, int port,
|
|
struct phy_device *phy);
|
|
|
|
/*
|
|
* EEE setttings
|
|
*/
|
|
int (*set_eee)(struct dsa_switch *ds, int port,
|
|
struct phy_device *phydev,
|
|
struct ethtool_eee *e);
|
|
int (*get_eee)(struct dsa_switch *ds, int port,
|
|
struct ethtool_eee *e);
|
|
|
|
#ifdef CONFIG_NET_DSA_HWMON
|
|
/* Hardware monitoring */
|
|
int (*get_temp)(struct dsa_switch *ds, int *temp);
|
|
int (*get_temp_limit)(struct dsa_switch *ds, int *temp);
|
|
int (*set_temp_limit)(struct dsa_switch *ds, int temp);
|
|
int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
|
|
#endif
|
|
|
|
/* EEPROM access */
|
|
int (*get_eeprom_len)(struct dsa_switch *ds);
|
|
int (*get_eeprom)(struct dsa_switch *ds,
|
|
struct ethtool_eeprom *eeprom, u8 *data);
|
|
int (*set_eeprom)(struct dsa_switch *ds,
|
|
struct ethtool_eeprom *eeprom, u8 *data);
|
|
|
|
/*
|
|
* Register access.
|
|
*/
|
|
int (*get_regs_len)(struct dsa_switch *ds, int port);
|
|
void (*get_regs)(struct dsa_switch *ds, int port,
|
|
struct ethtool_regs *regs, void *p);
|
|
|
|
/*
|
|
* Bridge integration
|
|
*/
|
|
int (*port_join_bridge)(struct dsa_switch *ds, int port,
|
|
u32 br_port_mask);
|
|
int (*port_leave_bridge)(struct dsa_switch *ds, int port,
|
|
u32 br_port_mask);
|
|
int (*port_stp_update)(struct dsa_switch *ds, int port,
|
|
u8 state);
|
|
|
|
/*
|
|
* VLAN support
|
|
*/
|
|
int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct switchdev_trans *trans);
|
|
int (*port_vlan_add)(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_vlan *vlan,
|
|
struct switchdev_trans *trans);
|
|
int (*port_vlan_del)(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_vlan *vlan);
|
|
int (*port_pvid_get)(struct dsa_switch *ds, int port, u16 *pvid);
|
|
int (*vlan_getnext)(struct dsa_switch *ds, u16 *vid,
|
|
unsigned long *ports, unsigned long *untagged);
|
|
|
|
/*
|
|
* Forwarding database
|
|
*/
|
|
int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_fdb *fdb,
|
|
struct switchdev_trans *trans);
|
|
int (*port_fdb_add)(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_fdb *fdb,
|
|
struct switchdev_trans *trans);
|
|
int (*port_fdb_del)(struct dsa_switch *ds, int port,
|
|
const struct switchdev_obj_port_fdb *fdb);
|
|
int (*port_fdb_dump)(struct dsa_switch *ds, int port,
|
|
struct switchdev_obj_port_fdb *fdb,
|
|
int (*cb)(struct switchdev_obj *obj));
|
|
};
|
|
|
|
void register_switch_driver(struct dsa_switch_driver *type);
|
|
void unregister_switch_driver(struct dsa_switch_driver *type);
|
|
struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
|
|
|
|
static inline void *ds_to_priv(struct dsa_switch *ds)
|
|
{
|
|
return (void *)(ds + 1);
|
|
}
|
|
|
|
static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
|
|
{
|
|
return dst->rcv != NULL;
|
|
}
|
|
#endif
|