191da11f8SLennert Buytenhek /* 291da11f8SLennert Buytenhek * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips 3e84665c9SLennert Buytenhek * Copyright (c) 2008-2009 Marvell Semiconductor 491da11f8SLennert Buytenhek * 591da11f8SLennert Buytenhek * This program is free software; you can redistribute it and/or modify 691da11f8SLennert Buytenhek * it under the terms of the GNU General Public License as published by 791da11f8SLennert Buytenhek * the Free Software Foundation; either version 2 of the License, or 891da11f8SLennert Buytenhek * (at your option) any later version. 991da11f8SLennert Buytenhek */ 1091da11f8SLennert Buytenhek 1191da11f8SLennert Buytenhek #ifndef __LINUX_NET_DSA_H 1291da11f8SLennert Buytenhek #define __LINUX_NET_DSA_H 1391da11f8SLennert Buytenhek 14ea1f51beSAxel Lin #include <linux/if_ether.h> 15c8f0b869SBen Hutchings #include <linux/list.h> 16cf50dcc2SBen Hutchings #include <linux/timer.h> 17cf50dcc2SBen Hutchings #include <linux/workqueue.h> 18fa981d9aSFlorian Fainelli #include <linux/of.h> 19ec9436baSFlorian Fainelli #include <linux/phy.h> 20ce31b31cSFlorian Fainelli #include <linux/phy_fixed.h> 21a2820543SFlorian Fainelli #include <linux/ethtool.h> 22cf50dcc2SBen Hutchings 23ac7a04c3SFlorian Fainelli enum dsa_tag_protocol { 24ac7a04c3SFlorian Fainelli DSA_TAG_PROTO_NONE = 0, 25ac7a04c3SFlorian Fainelli DSA_TAG_PROTO_DSA, 26ac7a04c3SFlorian Fainelli DSA_TAG_PROTO_TRAILER, 27ac7a04c3SFlorian Fainelli DSA_TAG_PROTO_EDSA, 28ac7a04c3SFlorian Fainelli DSA_TAG_PROTO_BRCM, 29ac7a04c3SFlorian Fainelli }; 305037d532SFlorian Fainelli 31e84665c9SLennert Buytenhek #define DSA_MAX_SWITCHES 4 3291da11f8SLennert Buytenhek #define DSA_MAX_PORTS 12 3391da11f8SLennert Buytenhek 34e84665c9SLennert Buytenhek struct dsa_chip_data { 35e84665c9SLennert Buytenhek /* 36e84665c9SLennert Buytenhek * How to access the switch configuration registers. 37e84665c9SLennert Buytenhek */ 38b4d2394dSAlexander Duyck struct device *host_dev; 39e84665c9SLennert Buytenhek int sw_addr; 40e84665c9SLennert Buytenhek 416793abb4SGuenter Roeck /* set to size of eeprom if supported by the switch */ 426793abb4SGuenter Roeck int eeprom_len; 436793abb4SGuenter Roeck 44fa981d9aSFlorian Fainelli /* Device tree node pointer for this specific switch chip 45fa981d9aSFlorian Fainelli * used during switch setup in case additional properties 46fa981d9aSFlorian Fainelli * and resources needs to be used 47fa981d9aSFlorian Fainelli */ 48fa981d9aSFlorian Fainelli struct device_node *of_node; 49fa981d9aSFlorian Fainelli 50e84665c9SLennert Buytenhek /* 51e84665c9SLennert Buytenhek * The names of the switch's ports. Use "cpu" to 52e84665c9SLennert Buytenhek * designate the switch port that the cpu is connected to, 53e84665c9SLennert Buytenhek * "dsa" to indicate that this port is a DSA link to 54e84665c9SLennert Buytenhek * another switch, NULL to indicate the port is unused, 55e84665c9SLennert Buytenhek * or any other string to indicate this is a physical port. 56e84665c9SLennert Buytenhek */ 57e84665c9SLennert Buytenhek char *port_names[DSA_MAX_PORTS]; 58bd47497aSFlorian Fainelli struct device_node *port_dn[DSA_MAX_PORTS]; 59e84665c9SLennert Buytenhek 60e84665c9SLennert Buytenhek /* 61e84665c9SLennert Buytenhek * An array (with nr_chips elements) of which element [a] 62e84665c9SLennert Buytenhek * indicates which port on this switch should be used to 63e84665c9SLennert Buytenhek * send packets to that are destined for switch a. Can be 64e84665c9SLennert Buytenhek * NULL if there is only one switch chip. 65e84665c9SLennert Buytenhek */ 66e84665c9SLennert Buytenhek s8 *rtable; 67e84665c9SLennert Buytenhek }; 68e84665c9SLennert Buytenhek 6991da11f8SLennert Buytenhek struct dsa_platform_data { 7091da11f8SLennert Buytenhek /* 7191da11f8SLennert Buytenhek * Reference to a Linux network interface that connects 72e84665c9SLennert Buytenhek * to the root switch chip of the tree. 7391da11f8SLennert Buytenhek */ 7491da11f8SLennert Buytenhek struct device *netdev; 75769a0202SFlorian Fainelli struct net_device *of_netdev; 7691da11f8SLennert Buytenhek 7791da11f8SLennert Buytenhek /* 78e84665c9SLennert Buytenhek * Info structs describing each of the switch chips 79e84665c9SLennert Buytenhek * connected via this network interface. 8091da11f8SLennert Buytenhek */ 81e84665c9SLennert Buytenhek int nr_chips; 82e84665c9SLennert Buytenhek struct dsa_chip_data *chip; 8391da11f8SLennert Buytenhek }; 8491da11f8SLennert Buytenhek 855075314eSAlexander Duyck struct packet_type; 863e8a72d1SFlorian Fainelli 87cf50dcc2SBen Hutchings struct dsa_switch_tree { 88cf50dcc2SBen Hutchings /* 89cf50dcc2SBen Hutchings * Configuration data for the platform device that owns 90cf50dcc2SBen Hutchings * this dsa switch tree instance. 91cf50dcc2SBen Hutchings */ 92cf50dcc2SBen Hutchings struct dsa_platform_data *pd; 93cf85d08fSLennert Buytenhek 94cf50dcc2SBen Hutchings /* 95cf50dcc2SBen Hutchings * Reference to network device to use, and which tagging 96cf50dcc2SBen Hutchings * protocol to use. 97cf50dcc2SBen Hutchings */ 98cf50dcc2SBen Hutchings struct net_device *master_netdev; 995075314eSAlexander Duyck int (*rcv)(struct sk_buff *skb, 1005075314eSAlexander Duyck struct net_device *dev, 1015075314eSAlexander Duyck struct packet_type *pt, 1025075314eSAlexander Duyck struct net_device *orig_dev); 103ac7a04c3SFlorian Fainelli enum dsa_tag_protocol tag_protocol; 104cf50dcc2SBen Hutchings 105cf50dcc2SBen Hutchings /* 106cf50dcc2SBen Hutchings * The switch and port to which the CPU is attached. 107cf50dcc2SBen Hutchings */ 108cf50dcc2SBen Hutchings s8 cpu_switch; 109cf50dcc2SBen Hutchings s8 cpu_port; 110cf50dcc2SBen Hutchings 111cf50dcc2SBen Hutchings /* 112cf50dcc2SBen Hutchings * Link state polling. 113cf50dcc2SBen Hutchings */ 114cf50dcc2SBen Hutchings int link_poll_needed; 115cf50dcc2SBen Hutchings struct work_struct link_poll_work; 116cf50dcc2SBen Hutchings struct timer_list link_poll_timer; 117cf50dcc2SBen Hutchings 118cf50dcc2SBen Hutchings /* 119cf50dcc2SBen Hutchings * Data for the individual switch chips. 120cf50dcc2SBen Hutchings */ 121cf50dcc2SBen Hutchings struct dsa_switch *ds[DSA_MAX_SWITCHES]; 122cf50dcc2SBen Hutchings }; 123cf50dcc2SBen Hutchings 124c8f0b869SBen Hutchings struct dsa_switch { 125c8f0b869SBen Hutchings /* 126c8f0b869SBen Hutchings * Parent switch tree, and switch index. 127c8f0b869SBen Hutchings */ 128c8f0b869SBen Hutchings struct dsa_switch_tree *dst; 129c8f0b869SBen Hutchings int index; 130c8f0b869SBen Hutchings 131c8f0b869SBen Hutchings /* 13259299031SFlorian Fainelli * Tagging protocol understood by this switch 13359299031SFlorian Fainelli */ 13459299031SFlorian Fainelli enum dsa_tag_protocol tag_protocol; 13559299031SFlorian Fainelli 13659299031SFlorian Fainelli /* 137c8f0b869SBen Hutchings * Configuration data for this switch. 138c8f0b869SBen Hutchings */ 139c8f0b869SBen Hutchings struct dsa_chip_data *pd; 140c8f0b869SBen Hutchings 141c8f0b869SBen Hutchings /* 142c8f0b869SBen Hutchings * The used switch driver. 143c8f0b869SBen Hutchings */ 144c8f0b869SBen Hutchings struct dsa_switch_driver *drv; 145c8f0b869SBen Hutchings 146c8f0b869SBen Hutchings /* 147b4d2394dSAlexander Duyck * Reference to host device to use. 148c8f0b869SBen Hutchings */ 149b4d2394dSAlexander Duyck struct device *master_dev; 150c8f0b869SBen Hutchings 15151579c3fSGuenter Roeck #ifdef CONFIG_NET_DSA_HWMON 15251579c3fSGuenter Roeck /* 15351579c3fSGuenter Roeck * Hardware monitoring information 15451579c3fSGuenter Roeck */ 15551579c3fSGuenter Roeck char hwmon_name[IFNAMSIZ + 8]; 15651579c3fSGuenter Roeck struct device *hwmon_dev; 15751579c3fSGuenter Roeck #endif 15851579c3fSGuenter Roeck 159c8f0b869SBen Hutchings /* 160c8f0b869SBen Hutchings * Slave mii_bus and devices for the individual ports. 161c8f0b869SBen Hutchings */ 162c8f0b869SBen Hutchings u32 dsa_port_mask; 163c8f0b869SBen Hutchings u32 phys_port_mask; 1640d8bcdd3SFlorian Fainelli u32 phys_mii_mask; 165c8f0b869SBen Hutchings struct mii_bus *slave_mii_bus; 166c8f0b869SBen Hutchings struct net_device *ports[DSA_MAX_PORTS]; 167c8f0b869SBen Hutchings }; 168c8f0b869SBen Hutchings 169c8f0b869SBen Hutchings static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 170c8f0b869SBen Hutchings { 171c8f0b869SBen Hutchings return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port); 172c8f0b869SBen Hutchings } 173c8f0b869SBen Hutchings 17460045cbfSAndrew Lunn static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 17560045cbfSAndrew Lunn { 17660045cbfSAndrew Lunn return !!((ds->dsa_port_mask) & (1 << p)); 17760045cbfSAndrew Lunn } 17860045cbfSAndrew Lunn 179d79d2107SGuenter Roeck static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p) 180d79d2107SGuenter Roeck { 181d79d2107SGuenter Roeck return ds->phys_port_mask & (1 << p) && ds->ports[p]; 182d79d2107SGuenter Roeck } 183d79d2107SGuenter Roeck 184c8f0b869SBen Hutchings static inline u8 dsa_upstream_port(struct dsa_switch *ds) 185c8f0b869SBen Hutchings { 186c8f0b869SBen Hutchings struct dsa_switch_tree *dst = ds->dst; 187c8f0b869SBen Hutchings 188c8f0b869SBen Hutchings /* 189c8f0b869SBen Hutchings * If this is the root switch (i.e. the switch that connects 190c8f0b869SBen Hutchings * to the CPU), return the cpu port number on this switch. 191c8f0b869SBen Hutchings * Else return the (DSA) port number that connects to the 192c8f0b869SBen Hutchings * switch that is one hop closer to the cpu. 193c8f0b869SBen Hutchings */ 194c8f0b869SBen Hutchings if (dst->cpu_switch == ds->index) 195c8f0b869SBen Hutchings return dst->cpu_port; 196c8f0b869SBen Hutchings else 197c8f0b869SBen Hutchings return ds->pd->rtable[dst->cpu_switch]; 198c8f0b869SBen Hutchings } 199c8f0b869SBen Hutchings 200146a3206SVivien Didelot struct switchdev_trans; 201ea70ba98SVivien Didelot struct switchdev_obj; 202146a3206SVivien Didelot struct switchdev_obj_port_fdb; 20376e398a6SVivien Didelot struct switchdev_obj_port_vlan; 204146a3206SVivien Didelot 205c8f0b869SBen Hutchings struct dsa_switch_driver { 206c8f0b869SBen Hutchings struct list_head list; 207c8f0b869SBen Hutchings 208ac7a04c3SFlorian Fainelli enum dsa_tag_protocol tag_protocol; 209c8f0b869SBen Hutchings int priv_size; 210c8f0b869SBen Hutchings 211c8f0b869SBen Hutchings /* 212c8f0b869SBen Hutchings * Probing and setup. 213c8f0b869SBen Hutchings */ 214b4d2394dSAlexander Duyck char *(*probe)(struct device *host_dev, int sw_addr); 215c8f0b869SBen Hutchings int (*setup)(struct dsa_switch *ds); 216c8f0b869SBen Hutchings int (*set_addr)(struct dsa_switch *ds, u8 *addr); 2176819563eSFlorian Fainelli u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 218c8f0b869SBen Hutchings 219c8f0b869SBen Hutchings /* 220c8f0b869SBen Hutchings * Access to the switch's PHY registers. 221c8f0b869SBen Hutchings */ 222c8f0b869SBen Hutchings int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 223c8f0b869SBen Hutchings int (*phy_write)(struct dsa_switch *ds, int port, 224c8f0b869SBen Hutchings int regnum, u16 val); 225c8f0b869SBen Hutchings 226c8f0b869SBen Hutchings /* 227c8f0b869SBen Hutchings * Link state polling and IRQ handling. 228c8f0b869SBen Hutchings */ 229c8f0b869SBen Hutchings void (*poll_link)(struct dsa_switch *ds); 230c8f0b869SBen Hutchings 231c8f0b869SBen Hutchings /* 232ec9436baSFlorian Fainelli * Link state adjustment (called from libphy) 233ec9436baSFlorian Fainelli */ 234ec9436baSFlorian Fainelli void (*adjust_link)(struct dsa_switch *ds, int port, 235ec9436baSFlorian Fainelli struct phy_device *phydev); 236ce31b31cSFlorian Fainelli void (*fixed_link_update)(struct dsa_switch *ds, int port, 237ce31b31cSFlorian Fainelli struct fixed_phy_status *st); 238ec9436baSFlorian Fainelli 239ec9436baSFlorian Fainelli /* 240c8f0b869SBen Hutchings * ethtool hardware statistics. 241c8f0b869SBen Hutchings */ 242c8f0b869SBen Hutchings void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data); 243c8f0b869SBen Hutchings void (*get_ethtool_stats)(struct dsa_switch *ds, 244c8f0b869SBen Hutchings int port, uint64_t *data); 245c8f0b869SBen Hutchings int (*get_sset_count)(struct dsa_switch *ds); 24624462549SFlorian Fainelli 24724462549SFlorian Fainelli /* 24819e57c4eSFlorian Fainelli * ethtool Wake-on-LAN 24919e57c4eSFlorian Fainelli */ 25019e57c4eSFlorian Fainelli void (*get_wol)(struct dsa_switch *ds, int port, 25119e57c4eSFlorian Fainelli struct ethtool_wolinfo *w); 25219e57c4eSFlorian Fainelli int (*set_wol)(struct dsa_switch *ds, int port, 25319e57c4eSFlorian Fainelli struct ethtool_wolinfo *w); 25419e57c4eSFlorian Fainelli 25519e57c4eSFlorian Fainelli /* 25624462549SFlorian Fainelli * Suspend and resume 25724462549SFlorian Fainelli */ 25824462549SFlorian Fainelli int (*suspend)(struct dsa_switch *ds); 25924462549SFlorian Fainelli int (*resume)(struct dsa_switch *ds); 260b2f2af21SFlorian Fainelli 261b2f2af21SFlorian Fainelli /* 262b2f2af21SFlorian Fainelli * Port enable/disable 263b2f2af21SFlorian Fainelli */ 264b2f2af21SFlorian Fainelli int (*port_enable)(struct dsa_switch *ds, int port, 265b2f2af21SFlorian Fainelli struct phy_device *phy); 266b2f2af21SFlorian Fainelli void (*port_disable)(struct dsa_switch *ds, int port, 267b2f2af21SFlorian Fainelli struct phy_device *phy); 2687905288fSFlorian Fainelli 2697905288fSFlorian Fainelli /* 2707905288fSFlorian Fainelli * EEE setttings 2717905288fSFlorian Fainelli */ 2727905288fSFlorian Fainelli int (*set_eee)(struct dsa_switch *ds, int port, 2737905288fSFlorian Fainelli struct phy_device *phydev, 2747905288fSFlorian Fainelli struct ethtool_eee *e); 2757905288fSFlorian Fainelli int (*get_eee)(struct dsa_switch *ds, int port, 2767905288fSFlorian Fainelli struct ethtool_eee *e); 27751579c3fSGuenter Roeck 27851579c3fSGuenter Roeck #ifdef CONFIG_NET_DSA_HWMON 27951579c3fSGuenter Roeck /* Hardware monitoring */ 28051579c3fSGuenter Roeck int (*get_temp)(struct dsa_switch *ds, int *temp); 28151579c3fSGuenter Roeck int (*get_temp_limit)(struct dsa_switch *ds, int *temp); 28251579c3fSGuenter Roeck int (*set_temp_limit)(struct dsa_switch *ds, int temp); 28351579c3fSGuenter Roeck int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm); 28451579c3fSGuenter Roeck #endif 2856793abb4SGuenter Roeck 2866793abb4SGuenter Roeck /* EEPROM access */ 2876793abb4SGuenter Roeck int (*get_eeprom_len)(struct dsa_switch *ds); 2886793abb4SGuenter Roeck int (*get_eeprom)(struct dsa_switch *ds, 2896793abb4SGuenter Roeck struct ethtool_eeprom *eeprom, u8 *data); 2906793abb4SGuenter Roeck int (*set_eeprom)(struct dsa_switch *ds, 2916793abb4SGuenter Roeck struct ethtool_eeprom *eeprom, u8 *data); 2923d762a0fSGuenter Roeck 2933d762a0fSGuenter Roeck /* 2943d762a0fSGuenter Roeck * Register access. 2953d762a0fSGuenter Roeck */ 2963d762a0fSGuenter Roeck int (*get_regs_len)(struct dsa_switch *ds, int port); 2973d762a0fSGuenter Roeck void (*get_regs)(struct dsa_switch *ds, int port, 2983d762a0fSGuenter Roeck struct ethtool_regs *regs, void *p); 299b73adef6SFlorian Fainelli 300b73adef6SFlorian Fainelli /* 301b73adef6SFlorian Fainelli * Bridge integration 302b73adef6SFlorian Fainelli */ 303b73adef6SFlorian Fainelli int (*port_join_bridge)(struct dsa_switch *ds, int port, 304b73adef6SFlorian Fainelli u32 br_port_mask); 305b73adef6SFlorian Fainelli int (*port_leave_bridge)(struct dsa_switch *ds, int port, 306b73adef6SFlorian Fainelli u32 br_port_mask); 307b73adef6SFlorian Fainelli int (*port_stp_update)(struct dsa_switch *ds, int port, 308b73adef6SFlorian Fainelli u8 state); 3092a778e1bSVivien Didelot 3102a778e1bSVivien Didelot /* 31111149536SVivien Didelot * VLAN support 31211149536SVivien Didelot */ 31376e398a6SVivien Didelot int (*port_vlan_prepare)(struct dsa_switch *ds, int port, 31476e398a6SVivien Didelot const struct switchdev_obj_port_vlan *vlan, 31576e398a6SVivien Didelot struct switchdev_trans *trans); 31676e398a6SVivien Didelot int (*port_vlan_add)(struct dsa_switch *ds, int port, 31776e398a6SVivien Didelot const struct switchdev_obj_port_vlan *vlan, 31876e398a6SVivien Didelot struct switchdev_trans *trans); 31976e398a6SVivien Didelot int (*port_vlan_del)(struct dsa_switch *ds, int port, 32076e398a6SVivien Didelot const struct switchdev_obj_port_vlan *vlan); 32111149536SVivien Didelot int (*port_pvid_get)(struct dsa_switch *ds, int port, u16 *pvid); 32211149536SVivien Didelot int (*vlan_getnext)(struct dsa_switch *ds, u16 *vid, 32311149536SVivien Didelot unsigned long *ports, unsigned long *untagged); 32411149536SVivien Didelot 32511149536SVivien Didelot /* 3262a778e1bSVivien Didelot * Forwarding database 3272a778e1bSVivien Didelot */ 328146a3206SVivien Didelot int (*port_fdb_prepare)(struct dsa_switch *ds, int port, 329146a3206SVivien Didelot const struct switchdev_obj_port_fdb *fdb, 330146a3206SVivien Didelot struct switchdev_trans *trans); 3312a778e1bSVivien Didelot int (*port_fdb_add)(struct dsa_switch *ds, int port, 3321f36faf2SVivien Didelot const struct switchdev_obj_port_fdb *fdb, 3331f36faf2SVivien Didelot struct switchdev_trans *trans); 3342a778e1bSVivien Didelot int (*port_fdb_del)(struct dsa_switch *ds, int port, 3358057b3e7SVivien Didelot const struct switchdev_obj_port_fdb *fdb); 336ea70ba98SVivien Didelot int (*port_fdb_dump)(struct dsa_switch *ds, int port, 337ea70ba98SVivien Didelot struct switchdev_obj_port_fdb *fdb, 338ea70ba98SVivien Didelot int (*cb)(struct switchdev_obj *obj)); 339c8f0b869SBen Hutchings }; 340c8f0b869SBen Hutchings 341c8f0b869SBen Hutchings void register_switch_driver(struct dsa_switch_driver *type); 342c8f0b869SBen Hutchings void unregister_switch_driver(struct dsa_switch_driver *type); 343b4d2394dSAlexander Duyck struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev); 344c8f0b869SBen Hutchings 3457fa857edSFlorian Fainelli static inline void *ds_to_priv(struct dsa_switch *ds) 3467fa857edSFlorian Fainelli { 3477fa857edSFlorian Fainelli return (void *)(ds + 1); 3487fa857edSFlorian Fainelli } 3497fa857edSFlorian Fainelli 3505aed85ceSFlorian Fainelli static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst) 3515aed85ceSFlorian Fainelli { 3525075314eSAlexander Duyck return dst->rcv != NULL; 3535aed85ceSFlorian Fainelli } 35491da11f8SLennert Buytenhek #endif 355