12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 291da11f8SLennert Buytenhek /* 391da11f8SLennert Buytenhek * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips 4e84665c9SLennert Buytenhek * Copyright (c) 2008-2009 Marvell Semiconductor 591da11f8SLennert Buytenhek */ 691da11f8SLennert Buytenhek 791da11f8SLennert Buytenhek #ifndef __LINUX_NET_DSA_H 891da11f8SLennert Buytenhek #define __LINUX_NET_DSA_H 991da11f8SLennert Buytenhek 104d56a29fSRussell King #include <linux/if.h> 11ea1f51beSAxel Lin #include <linux/if_ether.h> 12c8f0b869SBen Hutchings #include <linux/list.h> 13f515f192SVivien Didelot #include <linux/notifier.h> 14cf50dcc2SBen Hutchings #include <linux/timer.h> 15cf50dcc2SBen Hutchings #include <linux/workqueue.h> 16fa981d9aSFlorian Fainelli #include <linux/of.h> 17a2820543SFlorian Fainelli #include <linux/ethtool.h> 180336369dSBrandon Streiff #include <linux/net_tstamp.h> 1911d8f3ddSFlorian Fainelli #include <linux/phy.h> 20ecfc9372SFlorian Fainelli #include <linux/platform_data/dsa.h> 2144cc27e4SIoana Ciornei #include <linux/phylink.h> 2296567d5dSAndrew Lunn #include <net/devlink.h> 23f0c24ccfSVivien Didelot #include <net/switchdev.h> 24cf50dcc2SBen Hutchings 25f50f2127SFlorian Fainelli struct tc_action; 264d56a29fSRussell King struct phy_device; 274d56a29fSRussell King struct fixed_phy_status; 2811d8f3ddSFlorian Fainelli struct phylink_link_state; 29f50f2127SFlorian Fainelli 300b42f033SAndrew Lunn #define DSA_TAG_PROTO_NONE_VALUE 0 310b42f033SAndrew Lunn #define DSA_TAG_PROTO_BRCM_VALUE 1 320b42f033SAndrew Lunn #define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2 330b42f033SAndrew Lunn #define DSA_TAG_PROTO_DSA_VALUE 3 340b42f033SAndrew Lunn #define DSA_TAG_PROTO_EDSA_VALUE 4 350b42f033SAndrew Lunn #define DSA_TAG_PROTO_GSWIP_VALUE 5 360b42f033SAndrew Lunn #define DSA_TAG_PROTO_KSZ9477_VALUE 6 370b42f033SAndrew Lunn #define DSA_TAG_PROTO_KSZ9893_VALUE 7 380b42f033SAndrew Lunn #define DSA_TAG_PROTO_LAN9303_VALUE 8 390b42f033SAndrew Lunn #define DSA_TAG_PROTO_MTK_VALUE 9 400b42f033SAndrew Lunn #define DSA_TAG_PROTO_QCA_VALUE 10 410b42f033SAndrew Lunn #define DSA_TAG_PROTO_TRAILER_VALUE 11 42f9bbe447SVladimir Oltean #define DSA_TAG_PROTO_8021Q_VALUE 12 43227d07a0SVladimir Oltean #define DSA_TAG_PROTO_SJA1105_VALUE 13 44016e43a2STristram Ha #define DSA_TAG_PROTO_KSZ8795_VALUE 14 450b42f033SAndrew Lunn 46ac7a04c3SFlorian Fainelli enum dsa_tag_protocol { 470b42f033SAndrew Lunn DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 480b42f033SAndrew Lunn DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 490b42f033SAndrew Lunn DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 500b42f033SAndrew Lunn DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 510b42f033SAndrew Lunn DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 520b42f033SAndrew Lunn DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 530b42f033SAndrew Lunn DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 540b42f033SAndrew Lunn DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 550b42f033SAndrew Lunn DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 560b42f033SAndrew Lunn DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 570b42f033SAndrew Lunn DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 580b42f033SAndrew Lunn DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 59f9bbe447SVladimir Oltean DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 60227d07a0SVladimir Oltean DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 61016e43a2STristram Ha DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 62ac7a04c3SFlorian Fainelli }; 635037d532SFlorian Fainelli 645075314eSAlexander Duyck struct packet_type; 6590af1059SBrandon Streiff struct dsa_switch; 663e8a72d1SFlorian Fainelli 6768277a2cSJohn Crispin struct dsa_device_ops { 6868277a2cSJohn Crispin struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 6968277a2cSJohn Crispin struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, 7089e49506SFlorian Westphal struct packet_type *pt); 71598a9680SJohn Crispin int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 72598a9680SJohn Crispin int *offset); 73cc1939e4SVladimir Oltean /* Used to determine which traffic should match the DSA filter in 74cc1939e4SVladimir Oltean * eth_type_trans, and which, if any, should bypass it and be processed 75cc1939e4SVladimir Oltean * as regular on the master net device. 76cc1939e4SVladimir Oltean */ 77cc1939e4SVladimir Oltean bool (*filter)(const struct sk_buff *skb, struct net_device *dev); 78a5dd3087SAndrew Lunn unsigned int overhead; 79875138f8SAndrew Lunn const char *name; 80056eed2fSAndrew Lunn enum dsa_tag_protocol proto; 8168277a2cSJohn Crispin }; 8268277a2cSJohn Crispin 830b42f033SAndrew Lunn #define DSA_TAG_DRIVER_ALIAS "dsa_tag-" 840b42f033SAndrew Lunn #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \ 850b42f033SAndrew Lunn MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE)) 860b42f033SAndrew Lunn 87b68b0dd0SVladimir Oltean struct dsa_skb_cb { 88b68b0dd0SVladimir Oltean struct sk_buff *clone; 8997a69a0dSVladimir Oltean bool deferred_xmit; 90b68b0dd0SVladimir Oltean }; 91b68b0dd0SVladimir Oltean 92b68b0dd0SVladimir Oltean struct __dsa_skb_cb { 93b68b0dd0SVladimir Oltean struct dsa_skb_cb cb; 94b68b0dd0SVladimir Oltean u8 priv[48 - sizeof(struct dsa_skb_cb)]; 95b68b0dd0SVladimir Oltean }; 96b68b0dd0SVladimir Oltean 97b68b0dd0SVladimir Oltean #define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb)) 98b68b0dd0SVladimir Oltean 99b68b0dd0SVladimir Oltean #define DSA_SKB_CB_PRIV(skb) \ 100b68b0dd0SVladimir Oltean ((void *)(skb)->cb + offsetof(struct __dsa_skb_cb, priv)) 101b68b0dd0SVladimir Oltean 102cf50dcc2SBen Hutchings struct dsa_switch_tree { 10383c0afaeSAndrew Lunn struct list_head list; 10483c0afaeSAndrew Lunn 105f515f192SVivien Didelot /* Notifier chain for switch-wide events */ 106f515f192SVivien Didelot struct raw_notifier_head nh; 107f515f192SVivien Didelot 10883c0afaeSAndrew Lunn /* Tree identifier */ 10949463b7fSVivien Didelot unsigned int index; 11083c0afaeSAndrew Lunn 11183c0afaeSAndrew Lunn /* Number of switches attached to this tree */ 11283c0afaeSAndrew Lunn struct kref refcount; 11383c0afaeSAndrew Lunn 11483c0afaeSAndrew Lunn /* Has this tree been applied to the hardware? */ 115ec15dd42SVivien Didelot bool setup; 11683c0afaeSAndrew Lunn 117cf50dcc2SBen Hutchings /* 118cf50dcc2SBen Hutchings * Configuration data for the platform device that owns 119cf50dcc2SBen Hutchings * this dsa switch tree instance. 120cf50dcc2SBen Hutchings */ 121cf50dcc2SBen Hutchings struct dsa_platform_data *pd; 122cf85d08fSLennert Buytenhek 123ab8ccae1SVivien Didelot /* List of switch ports */ 124ab8ccae1SVivien Didelot struct list_head ports; 125ab8ccae1SVivien Didelot 126c5f51765SVivien Didelot /* List of DSA links composing the routing table */ 127c5f51765SVivien Didelot struct list_head rtable; 128c5f51765SVivien Didelot 129cf50dcc2SBen Hutchings /* 130cf50dcc2SBen Hutchings * Data for the individual switch chips. 131cf50dcc2SBen Hutchings */ 132cf50dcc2SBen Hutchings struct dsa_switch *ds[DSA_MAX_SWITCHES]; 133cf50dcc2SBen Hutchings }; 134cf50dcc2SBen Hutchings 135f50f2127SFlorian Fainelli /* TC matchall action types, only mirroring for now */ 136f50f2127SFlorian Fainelli enum dsa_port_mall_action_type { 137f50f2127SFlorian Fainelli DSA_PORT_MALL_MIRROR, 138f50f2127SFlorian Fainelli }; 139f50f2127SFlorian Fainelli 140f50f2127SFlorian Fainelli /* TC mirroring entry */ 141f50f2127SFlorian Fainelli struct dsa_mall_mirror_tc_entry { 142f50f2127SFlorian Fainelli u8 to_local_port; 143f50f2127SFlorian Fainelli bool ingress; 144f50f2127SFlorian Fainelli }; 145f50f2127SFlorian Fainelli 146f50f2127SFlorian Fainelli /* TC matchall entry */ 147f50f2127SFlorian Fainelli struct dsa_mall_tc_entry { 148f50f2127SFlorian Fainelli struct list_head list; 149f50f2127SFlorian Fainelli unsigned long cookie; 150f50f2127SFlorian Fainelli enum dsa_port_mall_action_type type; 151f50f2127SFlorian Fainelli union { 152f50f2127SFlorian Fainelli struct dsa_mall_mirror_tc_entry mirror; 153f50f2127SFlorian Fainelli }; 154f50f2127SFlorian Fainelli }; 155f50f2127SFlorian Fainelli 156f50f2127SFlorian Fainelli 157c8b09808SAndrew Lunn struct dsa_port { 158f8b8b1cdSVivien Didelot /* A CPU port is physically connected to a master device. 159f8b8b1cdSVivien Didelot * A user port exposed to userspace has a slave device. 160f8b8b1cdSVivien Didelot */ 161f8b8b1cdSVivien Didelot union { 162f8b8b1cdSVivien Didelot struct net_device *master; 163f8b8b1cdSVivien Didelot struct net_device *slave; 164f8b8b1cdSVivien Didelot }; 165f8b8b1cdSVivien Didelot 16615240248SVivien Didelot /* CPU port tagging operations used by master or slave devices */ 16715240248SVivien Didelot const struct dsa_device_ops *tag_ops; 16815240248SVivien Didelot 1693e41f93bSVivien Didelot /* Copies for faster access in master receive hot path */ 1703e41f93bSVivien Didelot struct dsa_switch_tree *dst; 1713e41f93bSVivien Didelot struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, 1723e41f93bSVivien Didelot struct packet_type *pt); 173cc1939e4SVladimir Oltean bool (*filter)(const struct sk_buff *skb, struct net_device *dev); 1743e41f93bSVivien Didelot 175057cad2cSVivien Didelot enum { 176057cad2cSVivien Didelot DSA_PORT_TYPE_UNUSED = 0, 177057cad2cSVivien Didelot DSA_PORT_TYPE_CPU, 178057cad2cSVivien Didelot DSA_PORT_TYPE_DSA, 179057cad2cSVivien Didelot DSA_PORT_TYPE_USER, 180057cad2cSVivien Didelot } type; 181057cad2cSVivien Didelot 182818be848SVivien Didelot struct dsa_switch *ds; 183818be848SVivien Didelot unsigned int index; 18471e0bbdeSFlorian Fainelli const char *name; 18568b2d4a8SVivien Didelot struct dsa_port *cpu_dp; 186a2c7023fSXiaofei Shen const char *mac; 187189b0d93SAndrew Lunn struct device_node *dn; 18834a79f63SVivien Didelot unsigned int ageing_time; 18933162e9aSVladimir Oltean bool vlan_filtering; 190732f794cSVivien Didelot u8 stp_state; 191a5e9a02eSVivien Didelot struct net_device *bridge_dev; 19296567d5dSAndrew Lunn struct devlink_port devlink_port; 193aab9c406SFlorian Fainelli struct phylink *pl; 19444cc27e4SIoana Ciornei struct phylink_config pl_config; 19597a69a0dSVladimir Oltean 19697a69a0dSVladimir Oltean struct work_struct xmit_work; 19797a69a0dSVladimir Oltean struct sk_buff_head xmit_queue; 19897a69a0dSVladimir Oltean 199ab8ccae1SVivien Didelot struct list_head list; 200ab8ccae1SVivien Didelot 20167dbb9d4SFlorian Fainelli /* 202c362beb0SVladimir Oltean * Give the switch driver somewhere to hang its per-port private data 203c362beb0SVladimir Oltean * structures (accessible from the tagger). 204c362beb0SVladimir Oltean */ 205c362beb0SVladimir Oltean void *priv; 206c362beb0SVladimir Oltean 207c362beb0SVladimir Oltean /* 20867dbb9d4SFlorian Fainelli * Original copy of the master netdev ethtool_ops 20967dbb9d4SFlorian Fainelli */ 21067dbb9d4SFlorian Fainelli const struct ethtool_ops *orig_ethtool_ops; 211da7b9e9bSFlorian Fainelli 212da7b9e9bSFlorian Fainelli /* 213da7b9e9bSFlorian Fainelli * Original copy of the master netdev net_device_ops 214da7b9e9bSFlorian Fainelli */ 215da7b9e9bSFlorian Fainelli const struct net_device_ops *orig_ndo_ops; 216fb35c60cSVivien Didelot 217fb35c60cSVivien Didelot bool setup; 218c8b09808SAndrew Lunn }; 219c8b09808SAndrew Lunn 220c5f51765SVivien Didelot /* TODO: ideally DSA ports would have a single dp->link_dp member, 221c5f51765SVivien Didelot * and no dst->rtable nor this struct dsa_link would be needed, 222c5f51765SVivien Didelot * but this would require some more complex tree walking, 223c5f51765SVivien Didelot * so keep it stupid at the moment and list them all. 224c5f51765SVivien Didelot */ 225c5f51765SVivien Didelot struct dsa_link { 226c5f51765SVivien Didelot struct dsa_port *dp; 227c5f51765SVivien Didelot struct dsa_port *link_dp; 228c5f51765SVivien Didelot struct list_head list; 229c5f51765SVivien Didelot }; 230c5f51765SVivien Didelot 231c8f0b869SBen Hutchings struct dsa_switch { 232fb35c60cSVivien Didelot bool setup; 233fb35c60cSVivien Didelot 234c33063d6SAndrew Lunn struct device *dev; 235c33063d6SAndrew Lunn 236c8f0b869SBen Hutchings /* 237c8f0b869SBen Hutchings * Parent switch tree, and switch index. 238c8f0b869SBen Hutchings */ 239c8f0b869SBen Hutchings struct dsa_switch_tree *dst; 24099feaafcSVivien Didelot unsigned int index; 241c8f0b869SBen Hutchings 242f515f192SVivien Didelot /* Listener for switch fabric events */ 243f515f192SVivien Didelot struct notifier_block nb; 244f515f192SVivien Didelot 245c8f0b869SBen Hutchings /* 2467543a6d5SAndrew Lunn * Give the switch driver somewhere to hang its private data 2477543a6d5SAndrew Lunn * structure. 2487543a6d5SAndrew Lunn */ 2497543a6d5SAndrew Lunn void *priv; 2507543a6d5SAndrew Lunn 2517543a6d5SAndrew Lunn /* 252c8f0b869SBen Hutchings * Configuration data for this switch. 253c8f0b869SBen Hutchings */ 254ff04955cSAndrew Lunn struct dsa_chip_data *cd; 255c8f0b869SBen Hutchings 256c8f0b869SBen Hutchings /* 2579d490b4eSVivien Didelot * The switch operations. 258c8f0b869SBen Hutchings */ 259a82f67afSFlorian Fainelli const struct dsa_switch_ops *ops; 260c8f0b869SBen Hutchings 26166472fc0SAndrew Lunn /* 26266472fc0SAndrew Lunn * An array of which element [a] indicates which port on this 26366472fc0SAndrew Lunn * switch should be used to send packets to that are destined 26466472fc0SAndrew Lunn * for switch a. Can be NULL if there is only one switch chip. 26566472fc0SAndrew Lunn */ 26666472fc0SAndrew Lunn s8 rtable[DSA_MAX_SWITCHES]; 26766472fc0SAndrew Lunn 268c8f0b869SBen Hutchings /* 269c8f0b869SBen Hutchings * Slave mii_bus and devices for the individual ports. 270c8f0b869SBen Hutchings */ 2710d8bcdd3SFlorian Fainelli u32 phys_mii_mask; 272c8f0b869SBen Hutchings struct mii_bus *slave_mii_bus; 273a0c02161SVivien Didelot 2740f3da6afSVivien Didelot /* Ageing Time limits in msecs */ 2750f3da6afSVivien Didelot unsigned int ageing_time_min; 2760f3da6afSVivien Didelot unsigned int ageing_time_max; 2770f3da6afSVivien Didelot 27896567d5dSAndrew Lunn /* devlink used to represent this switch device */ 27996567d5dSAndrew Lunn struct devlink *devlink; 28096567d5dSAndrew Lunn 28155199df6SFlorian Fainelli /* Number of switch port queues */ 28255199df6SFlorian Fainelli unsigned int num_tx_queues; 28355199df6SFlorian Fainelli 2848f5d16f6SVladimir Oltean /* Disallow bridge core from requesting different VLAN awareness 2858f5d16f6SVladimir Oltean * settings on ports if not hardware-supported 2868f5d16f6SVladimir Oltean */ 2878f5d16f6SVladimir Oltean bool vlan_filtering_is_global; 2888f5d16f6SVladimir Oltean 28914574676SVladimir Oltean /* In case vlan_filtering_is_global is set, the VLAN awareness state 29014574676SVladimir Oltean * should be retrieved from here and not from the per-port settings. 29114574676SVladimir Oltean */ 29214574676SVladimir Oltean bool vlan_filtering; 29314574676SVladimir Oltean 294a0c02161SVivien Didelot size_t num_ports; 295c8f0b869SBen Hutchings }; 296c8f0b869SBen Hutchings 29768bb8ea8SVivien Didelot static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 298c38c5a66SVivien Didelot { 299b96ddf25SVivien Didelot struct dsa_switch_tree *dst = ds->dst; 300d607525bSVivien Didelot struct dsa_port *dp; 301b96ddf25SVivien Didelot 302b96ddf25SVivien Didelot list_for_each_entry(dp, &dst->ports, list) 303b96ddf25SVivien Didelot if (dp->ds == ds && dp->index == p) 304b96ddf25SVivien Didelot return dp; 305d607525bSVivien Didelot 306d607525bSVivien Didelot return NULL; 307c38c5a66SVivien Didelot } 308c38c5a66SVivien Didelot 309bff7b688SVivien Didelot static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 310bff7b688SVivien Didelot { 311c38c5a66SVivien Didelot return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 312bff7b688SVivien Didelot } 313bff7b688SVivien Didelot 314c8f0b869SBen Hutchings static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 315c8f0b869SBen Hutchings { 316c38c5a66SVivien Didelot return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 317c8f0b869SBen Hutchings } 318c8f0b869SBen Hutchings 31960045cbfSAndrew Lunn static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 32060045cbfSAndrew Lunn { 321c38c5a66SVivien Didelot return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 32260045cbfSAndrew Lunn } 32360045cbfSAndrew Lunn 3242b3e9891SVivien Didelot static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 3256cd456f3SVivien Didelot { 326c38c5a66SVivien Didelot return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 3276cd456f3SVivien Didelot } 3286cd456f3SVivien Didelot 32902bc6e54SVivien Didelot static inline u32 dsa_user_ports(struct dsa_switch *ds) 33002bc6e54SVivien Didelot { 331c38c5a66SVivien Didelot u32 mask = 0; 332c38c5a66SVivien Didelot int p; 33302bc6e54SVivien Didelot 334c38c5a66SVivien Didelot for (p = 0; p < ds->num_ports; p++) 335c38c5a66SVivien Didelot if (dsa_is_user_port(ds, p)) 336c38c5a66SVivien Didelot mask |= BIT(p); 337c38c5a66SVivien Didelot 338c38c5a66SVivien Didelot return mask; 339c8652c83SVivien Didelot } 340c8652c83SVivien Didelot 341c5f51765SVivien Didelot /* Return the local port used to reach an arbitrary switch device */ 342c5f51765SVivien Didelot static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 343c5f51765SVivien Didelot { 344c5f51765SVivien Didelot struct dsa_switch_tree *dst = ds->dst; 345c5f51765SVivien Didelot struct dsa_link *dl; 346c5f51765SVivien Didelot 347c5f51765SVivien Didelot list_for_each_entry(dl, &dst->rtable, list) 348c5f51765SVivien Didelot if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 349c5f51765SVivien Didelot return dl->dp->index; 350c5f51765SVivien Didelot 351c5f51765SVivien Didelot return ds->num_ports; 352c5f51765SVivien Didelot } 353c5f51765SVivien Didelot 3543b8fac5dSVivien Didelot /* Return the local port used to reach an arbitrary switch port */ 3553b8fac5dSVivien Didelot static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 3563b8fac5dSVivien Didelot int port) 3573b8fac5dSVivien Didelot { 3583b8fac5dSVivien Didelot if (device == ds->index) 3593b8fac5dSVivien Didelot return port; 3603b8fac5dSVivien Didelot else 361c5f51765SVivien Didelot return dsa_routing_port(ds, device); 3623b8fac5dSVivien Didelot } 3633b8fac5dSVivien Didelot 3643b8fac5dSVivien Didelot /* Return the local port used to reach the dedicated CPU port */ 36507073c79SVivien Didelot static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 366c8f0b869SBen Hutchings { 36707073c79SVivien Didelot const struct dsa_port *dp = dsa_to_port(ds, port); 36807073c79SVivien Didelot const struct dsa_port *cpu_dp = dp->cpu_dp; 36907073c79SVivien Didelot 37007073c79SVivien Didelot if (!cpu_dp) 37107073c79SVivien Didelot return port; 372c8f0b869SBen Hutchings 3733b8fac5dSVivien Didelot return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 374c8f0b869SBen Hutchings } 375c8f0b869SBen Hutchings 376cf2d45f5SVladimir Oltean static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 377cf2d45f5SVladimir Oltean { 378cf2d45f5SVladimir Oltean const struct dsa_switch *ds = dp->ds; 379cf2d45f5SVladimir Oltean 380cf2d45f5SVladimir Oltean if (ds->vlan_filtering_is_global) 381cf2d45f5SVladimir Oltean return ds->vlan_filtering; 382cf2d45f5SVladimir Oltean else 383cf2d45f5SVladimir Oltean return dp->vlan_filtering; 384cf2d45f5SVladimir Oltean } 385cf2d45f5SVladimir Oltean 3862bedde1aSArkadi Sharshevsky typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 3872bedde1aSArkadi Sharshevsky bool is_static, void *data); 3889d490b4eSVivien Didelot struct dsa_switch_ops { 3895ed4e3ebSFlorian Fainelli enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 3905ed4e3ebSFlorian Fainelli int port); 3917b314362SAndrew Lunn 392c8f0b869SBen Hutchings int (*setup)(struct dsa_switch *ds); 3935e3f847aSVladimir Oltean void (*teardown)(struct dsa_switch *ds); 3946819563eSFlorian Fainelli u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 395c8f0b869SBen Hutchings 396c8f0b869SBen Hutchings /* 397c8f0b869SBen Hutchings * Access to the switch's PHY registers. 398c8f0b869SBen Hutchings */ 399c8f0b869SBen Hutchings int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 400c8f0b869SBen Hutchings int (*phy_write)(struct dsa_switch *ds, int port, 401c8f0b869SBen Hutchings int regnum, u16 val); 402c8f0b869SBen Hutchings 403c8f0b869SBen Hutchings /* 404ec9436baSFlorian Fainelli * Link state adjustment (called from libphy) 405ec9436baSFlorian Fainelli */ 406ec9436baSFlorian Fainelli void (*adjust_link)(struct dsa_switch *ds, int port, 407ec9436baSFlorian Fainelli struct phy_device *phydev); 408ce31b31cSFlorian Fainelli void (*fixed_link_update)(struct dsa_switch *ds, int port, 409ce31b31cSFlorian Fainelli struct fixed_phy_status *st); 410ec9436baSFlorian Fainelli 411ec9436baSFlorian Fainelli /* 41211d8f3ddSFlorian Fainelli * PHYLINK integration 41311d8f3ddSFlorian Fainelli */ 41411d8f3ddSFlorian Fainelli void (*phylink_validate)(struct dsa_switch *ds, int port, 41511d8f3ddSFlorian Fainelli unsigned long *supported, 41611d8f3ddSFlorian Fainelli struct phylink_link_state *state); 41711d8f3ddSFlorian Fainelli int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, 41811d8f3ddSFlorian Fainelli struct phylink_link_state *state); 41911d8f3ddSFlorian Fainelli void (*phylink_mac_config)(struct dsa_switch *ds, int port, 42011d8f3ddSFlorian Fainelli unsigned int mode, 42111d8f3ddSFlorian Fainelli const struct phylink_link_state *state); 42211d8f3ddSFlorian Fainelli void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); 42311d8f3ddSFlorian Fainelli void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 42411d8f3ddSFlorian Fainelli unsigned int mode, 42511d8f3ddSFlorian Fainelli phy_interface_t interface); 42611d8f3ddSFlorian Fainelli void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 42711d8f3ddSFlorian Fainelli unsigned int mode, 42811d8f3ddSFlorian Fainelli phy_interface_t interface, 42911d8f3ddSFlorian Fainelli struct phy_device *phydev); 43011d8f3ddSFlorian Fainelli void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 43111d8f3ddSFlorian Fainelli struct phylink_link_state *state); 43211d8f3ddSFlorian Fainelli /* 433c8f0b869SBen Hutchings * ethtool hardware statistics. 434c8f0b869SBen Hutchings */ 43589f09048SFlorian Fainelli void (*get_strings)(struct dsa_switch *ds, int port, 43689f09048SFlorian Fainelli u32 stringset, uint8_t *data); 437c8f0b869SBen Hutchings void (*get_ethtool_stats)(struct dsa_switch *ds, 438c8f0b869SBen Hutchings int port, uint64_t *data); 43989f09048SFlorian Fainelli int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 440cf963573SFlorian Fainelli void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 441cf963573SFlorian Fainelli int port, uint64_t *data); 44224462549SFlorian Fainelli 44324462549SFlorian Fainelli /* 44419e57c4eSFlorian Fainelli * ethtool Wake-on-LAN 44519e57c4eSFlorian Fainelli */ 44619e57c4eSFlorian Fainelli void (*get_wol)(struct dsa_switch *ds, int port, 44719e57c4eSFlorian Fainelli struct ethtool_wolinfo *w); 44819e57c4eSFlorian Fainelli int (*set_wol)(struct dsa_switch *ds, int port, 44919e57c4eSFlorian Fainelli struct ethtool_wolinfo *w); 45019e57c4eSFlorian Fainelli 45119e57c4eSFlorian Fainelli /* 4520336369dSBrandon Streiff * ethtool timestamp info 4530336369dSBrandon Streiff */ 4540336369dSBrandon Streiff int (*get_ts_info)(struct dsa_switch *ds, int port, 4550336369dSBrandon Streiff struct ethtool_ts_info *ts); 4560336369dSBrandon Streiff 4570336369dSBrandon Streiff /* 45824462549SFlorian Fainelli * Suspend and resume 45924462549SFlorian Fainelli */ 46024462549SFlorian Fainelli int (*suspend)(struct dsa_switch *ds); 46124462549SFlorian Fainelli int (*resume)(struct dsa_switch *ds); 462b2f2af21SFlorian Fainelli 463b2f2af21SFlorian Fainelli /* 464b2f2af21SFlorian Fainelli * Port enable/disable 465b2f2af21SFlorian Fainelli */ 466b2f2af21SFlorian Fainelli int (*port_enable)(struct dsa_switch *ds, int port, 467b2f2af21SFlorian Fainelli struct phy_device *phy); 46875104db0SAndrew Lunn void (*port_disable)(struct dsa_switch *ds, int port); 4697905288fSFlorian Fainelli 4707905288fSFlorian Fainelli /* 47108f50061SVivien Didelot * Port's MAC EEE settings 4727905288fSFlorian Fainelli */ 47308f50061SVivien Didelot int (*set_mac_eee)(struct dsa_switch *ds, int port, 4747905288fSFlorian Fainelli struct ethtool_eee *e); 47508f50061SVivien Didelot int (*get_mac_eee)(struct dsa_switch *ds, int port, 4767905288fSFlorian Fainelli struct ethtool_eee *e); 47751579c3fSGuenter Roeck 4786793abb4SGuenter Roeck /* EEPROM access */ 4796793abb4SGuenter Roeck int (*get_eeprom_len)(struct dsa_switch *ds); 4806793abb4SGuenter Roeck int (*get_eeprom)(struct dsa_switch *ds, 4816793abb4SGuenter Roeck struct ethtool_eeprom *eeprom, u8 *data); 4826793abb4SGuenter Roeck int (*set_eeprom)(struct dsa_switch *ds, 4836793abb4SGuenter Roeck struct ethtool_eeprom *eeprom, u8 *data); 4843d762a0fSGuenter Roeck 4853d762a0fSGuenter Roeck /* 4863d762a0fSGuenter Roeck * Register access. 4873d762a0fSGuenter Roeck */ 4883d762a0fSGuenter Roeck int (*get_regs_len)(struct dsa_switch *ds, int port); 4893d762a0fSGuenter Roeck void (*get_regs)(struct dsa_switch *ds, int port, 4903d762a0fSGuenter Roeck struct ethtool_regs *regs, void *p); 491b73adef6SFlorian Fainelli 492b73adef6SFlorian Fainelli /* 493b73adef6SFlorian Fainelli * Bridge integration 494b73adef6SFlorian Fainelli */ 49534a79f63SVivien Didelot int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 49671327a4eSVivien Didelot int (*port_bridge_join)(struct dsa_switch *ds, int port, 497a6692754SVivien Didelot struct net_device *bridge); 498f123f2fbSVivien Didelot void (*port_bridge_leave)(struct dsa_switch *ds, int port, 499f123f2fbSVivien Didelot struct net_device *bridge); 50043c44a9fSVivien Didelot void (*port_stp_state_set)(struct dsa_switch *ds, int port, 501b73adef6SFlorian Fainelli u8 state); 502732f794cSVivien Didelot void (*port_fast_age)(struct dsa_switch *ds, int port); 50357652796SRussell King int (*port_egress_floods)(struct dsa_switch *ds, int port, 50457652796SRussell King bool unicast, bool multicast); 5052a778e1bSVivien Didelot 5062a778e1bSVivien Didelot /* 50711149536SVivien Didelot * VLAN support 50811149536SVivien Didelot */ 509fb2dabadSVivien Didelot int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 510fb2dabadSVivien Didelot bool vlan_filtering); 51176e398a6SVivien Didelot int (*port_vlan_prepare)(struct dsa_switch *ds, int port, 51280e02360SVivien Didelot const struct switchdev_obj_port_vlan *vlan); 5134d5770b3SVivien Didelot void (*port_vlan_add)(struct dsa_switch *ds, int port, 51480e02360SVivien Didelot const struct switchdev_obj_port_vlan *vlan); 51576e398a6SVivien Didelot int (*port_vlan_del)(struct dsa_switch *ds, int port, 51676e398a6SVivien Didelot const struct switchdev_obj_port_vlan *vlan); 51711149536SVivien Didelot /* 5182a778e1bSVivien Didelot * Forwarding database 5192a778e1bSVivien Didelot */ 5201b6dd556SArkadi Sharshevsky int (*port_fdb_add)(struct dsa_switch *ds, int port, 5216c2c1dcbSArkadi Sharshevsky const unsigned char *addr, u16 vid); 5222a778e1bSVivien Didelot int (*port_fdb_del)(struct dsa_switch *ds, int port, 5236c2c1dcbSArkadi Sharshevsky const unsigned char *addr, u16 vid); 524ea70ba98SVivien Didelot int (*port_fdb_dump)(struct dsa_switch *ds, int port, 5252bedde1aSArkadi Sharshevsky dsa_fdb_dump_cb_t *cb, void *data); 5268df30255SVivien Didelot 5278df30255SVivien Didelot /* 5288df30255SVivien Didelot * Multicast database 5298df30255SVivien Didelot */ 5308df30255SVivien Didelot int (*port_mdb_prepare)(struct dsa_switch *ds, int port, 5313709aadcSVivien Didelot const struct switchdev_obj_port_mdb *mdb); 5328df30255SVivien Didelot void (*port_mdb_add)(struct dsa_switch *ds, int port, 5333709aadcSVivien Didelot const struct switchdev_obj_port_mdb *mdb); 5348df30255SVivien Didelot int (*port_mdb_del)(struct dsa_switch *ds, int port, 5358df30255SVivien Didelot const struct switchdev_obj_port_mdb *mdb); 536bf9f2648SFlorian Fainelli /* 537bf9f2648SFlorian Fainelli * RXNFC 538bf9f2648SFlorian Fainelli */ 539bf9f2648SFlorian Fainelli int (*get_rxnfc)(struct dsa_switch *ds, int port, 540bf9f2648SFlorian Fainelli struct ethtool_rxnfc *nfc, u32 *rule_locs); 541bf9f2648SFlorian Fainelli int (*set_rxnfc)(struct dsa_switch *ds, int port, 542bf9f2648SFlorian Fainelli struct ethtool_rxnfc *nfc); 543f50f2127SFlorian Fainelli 544f50f2127SFlorian Fainelli /* 545f50f2127SFlorian Fainelli * TC integration 546f50f2127SFlorian Fainelli */ 547f50f2127SFlorian Fainelli int (*port_mirror_add)(struct dsa_switch *ds, int port, 548f50f2127SFlorian Fainelli struct dsa_mall_mirror_tc_entry *mirror, 549f50f2127SFlorian Fainelli bool ingress); 550f50f2127SFlorian Fainelli void (*port_mirror_del)(struct dsa_switch *ds, int port, 551f50f2127SFlorian Fainelli struct dsa_mall_mirror_tc_entry *mirror); 55247d23af2SVladimir Oltean int (*port_setup_tc)(struct dsa_switch *ds, int port, 55347d23af2SVladimir Oltean enum tc_setup_type type, void *type_data); 55440ef2c93SVivien Didelot 55540ef2c93SVivien Didelot /* 55640ef2c93SVivien Didelot * Cross-chip operations 55740ef2c93SVivien Didelot */ 55840ef2c93SVivien Didelot int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index, 55940ef2c93SVivien Didelot int port, struct net_device *br); 56040ef2c93SVivien Didelot void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index, 56140ef2c93SVivien Didelot int port, struct net_device *br); 5620336369dSBrandon Streiff 5630336369dSBrandon Streiff /* 5640336369dSBrandon Streiff * PTP functionality 5650336369dSBrandon Streiff */ 5660336369dSBrandon Streiff int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 5670336369dSBrandon Streiff struct ifreq *ifr); 5680336369dSBrandon Streiff int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 5690336369dSBrandon Streiff struct ifreq *ifr); 57090af1059SBrandon Streiff bool (*port_txtstamp)(struct dsa_switch *ds, int port, 57190af1059SBrandon Streiff struct sk_buff *clone, unsigned int type); 57290af1059SBrandon Streiff bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 57390af1059SBrandon Streiff struct sk_buff *skb, unsigned int type); 57497a69a0dSVladimir Oltean 57597a69a0dSVladimir Oltean /* 57697a69a0dSVladimir Oltean * Deferred frame Tx 57797a69a0dSVladimir Oltean */ 57897a69a0dSVladimir Oltean netdev_tx_t (*port_deferred_xmit)(struct dsa_switch *ds, int port, 57997a69a0dSVladimir Oltean struct sk_buff *skb); 5806b297524SAndrew Lunn /* Devlink parameters */ 5816b297524SAndrew Lunn int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 5826b297524SAndrew Lunn struct devlink_param_gset_ctx *ctx); 5836b297524SAndrew Lunn int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 5846b297524SAndrew Lunn struct devlink_param_gset_ctx *ctx); 5856b297524SAndrew Lunn }; 5866b297524SAndrew Lunn 5876b297524SAndrew Lunn #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 5886b297524SAndrew Lunn DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 5896b297524SAndrew Lunn dsa_devlink_param_get, dsa_devlink_param_set, NULL) 5906b297524SAndrew Lunn 5916b297524SAndrew Lunn int dsa_devlink_param_get(struct devlink *dl, u32 id, 5926b297524SAndrew Lunn struct devlink_param_gset_ctx *ctx); 5936b297524SAndrew Lunn int dsa_devlink_param_set(struct devlink *dl, u32 id, 5946b297524SAndrew Lunn struct devlink_param_gset_ctx *ctx); 5956b297524SAndrew Lunn int dsa_devlink_params_register(struct dsa_switch *ds, 5966b297524SAndrew Lunn const struct devlink_param *params, 5976b297524SAndrew Lunn size_t params_count); 5986b297524SAndrew Lunn void dsa_devlink_params_unregister(struct dsa_switch *ds, 5996b297524SAndrew Lunn const struct devlink_param *params, 6006b297524SAndrew Lunn size_t params_count); 6016b297524SAndrew Lunn struct dsa_devlink_priv { 6026b297524SAndrew Lunn struct dsa_switch *ds; 603c8f0b869SBen Hutchings }; 604c8f0b869SBen Hutchings 605ab3d408dSFlorian Fainelli struct dsa_switch_driver { 606ab3d408dSFlorian Fainelli struct list_head list; 607a82f67afSFlorian Fainelli const struct dsa_switch_ops *ops; 608ab3d408dSFlorian Fainelli }; 609ab3d408dSFlorian Fainelli 61014b89f36SFlorian Fainelli struct net_device *dsa_dev_to_net_device(struct device *dev); 611c8f0b869SBen Hutchings 61273a7ece8SVivien Didelot /* Keep inline for faster access in hot path */ 613c6e970a0SAndrew Lunn static inline bool netdev_uses_dsa(struct net_device *dev) 614c6e970a0SAndrew Lunn { 615c6e970a0SAndrew Lunn #if IS_ENABLED(CONFIG_NET_DSA) 616717ffbfbSVivien Didelot return dev->dsa_ptr && dev->dsa_ptr->rcv; 617c6e970a0SAndrew Lunn #endif 618c6e970a0SAndrew Lunn return false; 619c6e970a0SAndrew Lunn } 620c6e970a0SAndrew Lunn 621cc1939e4SVladimir Oltean static inline bool dsa_can_decode(const struct sk_buff *skb, 622cc1939e4SVladimir Oltean struct net_device *dev) 623cc1939e4SVladimir Oltean { 624cc1939e4SVladimir Oltean #if IS_ENABLED(CONFIG_NET_DSA) 625cc1939e4SVladimir Oltean return !dev->dsa_ptr->filter || dev->dsa_ptr->filter(skb, dev); 626cc1939e4SVladimir Oltean #endif 627cc1939e4SVladimir Oltean return false; 628cc1939e4SVladimir Oltean } 629cc1939e4SVladimir Oltean 63083c0afaeSAndrew Lunn void dsa_unregister_switch(struct dsa_switch *ds); 63123c9ee49SVivien Didelot int dsa_register_switch(struct dsa_switch *ds); 632ea825e70SFlorian Fainelli #ifdef CONFIG_PM_SLEEP 633ea825e70SFlorian Fainelli int dsa_switch_suspend(struct dsa_switch *ds); 634ea825e70SFlorian Fainelli int dsa_switch_resume(struct dsa_switch *ds); 635ea825e70SFlorian Fainelli #else 636ea825e70SFlorian Fainelli static inline int dsa_switch_suspend(struct dsa_switch *ds) 637ea825e70SFlorian Fainelli { 638ea825e70SFlorian Fainelli return 0; 639ea825e70SFlorian Fainelli } 640ea825e70SFlorian Fainelli static inline int dsa_switch_resume(struct dsa_switch *ds) 641ea825e70SFlorian Fainelli { 642ea825e70SFlorian Fainelli return 0; 643ea825e70SFlorian Fainelli } 644ea825e70SFlorian Fainelli #endif /* CONFIG_PM_SLEEP */ 645ea825e70SFlorian Fainelli 64660724d4bSFlorian Fainelli enum dsa_notifier_type { 64760724d4bSFlorian Fainelli DSA_PORT_REGISTER, 64860724d4bSFlorian Fainelli DSA_PORT_UNREGISTER, 64960724d4bSFlorian Fainelli }; 65060724d4bSFlorian Fainelli 65160724d4bSFlorian Fainelli struct dsa_notifier_info { 65260724d4bSFlorian Fainelli struct net_device *dev; 65360724d4bSFlorian Fainelli }; 65460724d4bSFlorian Fainelli 65560724d4bSFlorian Fainelli struct dsa_notifier_register_info { 65660724d4bSFlorian Fainelli struct dsa_notifier_info info; /* must be first */ 65760724d4bSFlorian Fainelli struct net_device *master; 65860724d4bSFlorian Fainelli unsigned int port_number; 65960724d4bSFlorian Fainelli unsigned int switch_number; 66060724d4bSFlorian Fainelli }; 66160724d4bSFlorian Fainelli 66260724d4bSFlorian Fainelli static inline struct net_device * 66360724d4bSFlorian Fainelli dsa_notifier_info_to_dev(const struct dsa_notifier_info *info) 66460724d4bSFlorian Fainelli { 66560724d4bSFlorian Fainelli return info->dev; 66660724d4bSFlorian Fainelli } 66760724d4bSFlorian Fainelli 66860724d4bSFlorian Fainelli #if IS_ENABLED(CONFIG_NET_DSA) 66960724d4bSFlorian Fainelli int register_dsa_notifier(struct notifier_block *nb); 67060724d4bSFlorian Fainelli int unregister_dsa_notifier(struct notifier_block *nb); 67160724d4bSFlorian Fainelli int call_dsa_notifiers(unsigned long val, struct net_device *dev, 67260724d4bSFlorian Fainelli struct dsa_notifier_info *info); 67360724d4bSFlorian Fainelli #else 67460724d4bSFlorian Fainelli static inline int register_dsa_notifier(struct notifier_block *nb) 67560724d4bSFlorian Fainelli { 67660724d4bSFlorian Fainelli return 0; 67760724d4bSFlorian Fainelli } 67860724d4bSFlorian Fainelli 67960724d4bSFlorian Fainelli static inline int unregister_dsa_notifier(struct notifier_block *nb) 68060724d4bSFlorian Fainelli { 68160724d4bSFlorian Fainelli return 0; 68260724d4bSFlorian Fainelli } 68360724d4bSFlorian Fainelli 68460724d4bSFlorian Fainelli static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev, 68560724d4bSFlorian Fainelli struct dsa_notifier_info *info) 68660724d4bSFlorian Fainelli { 68760724d4bSFlorian Fainelli return NOTIFY_DONE; 68860724d4bSFlorian Fainelli } 68960724d4bSFlorian Fainelli #endif 69060724d4bSFlorian Fainelli 6910a5f14ceSFlorian Fainelli /* Broadcom tag specific helpers to insert and extract queue/port number */ 6920a5f14ceSFlorian Fainelli #define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q) 6930a5f14ceSFlorian Fainelli #define BRCM_TAG_GET_PORT(v) ((v) >> 8) 6940a5f14ceSFlorian Fainelli #define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff) 6950a5f14ceSFlorian Fainelli 696cf963573SFlorian Fainelli 69797a69a0dSVladimir Oltean netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 698cf963573SFlorian Fainelli int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data); 699cf963573SFlorian Fainelli int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data); 700cf963573SFlorian Fainelli int dsa_port_get_phy_sset_count(struct dsa_port *dp); 70111d8f3ddSFlorian Fainelli void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 702cf963573SFlorian Fainelli 703d3b8c049SAndrew Lunn struct dsa_tag_driver { 704d3b8c049SAndrew Lunn const struct dsa_device_ops *ops; 705d3b8c049SAndrew Lunn struct list_head list; 706d3b8c049SAndrew Lunn struct module *owner; 707d3b8c049SAndrew Lunn }; 708d3b8c049SAndrew Lunn 709d3b8c049SAndrew Lunn void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], 710d3b8c049SAndrew Lunn unsigned int count, 711d3b8c049SAndrew Lunn struct module *owner); 712d3b8c049SAndrew Lunn void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], 713d3b8c049SAndrew Lunn unsigned int count); 714d3b8c049SAndrew Lunn 715d3b8c049SAndrew Lunn #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ 716d3b8c049SAndrew Lunn static int __init dsa_tag_driver_module_init(void) \ 717d3b8c049SAndrew Lunn { \ 718d3b8c049SAndrew Lunn dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ 719d3b8c049SAndrew Lunn THIS_MODULE); \ 720d3b8c049SAndrew Lunn return 0; \ 721d3b8c049SAndrew Lunn } \ 722d3b8c049SAndrew Lunn module_init(dsa_tag_driver_module_init); \ 723d3b8c049SAndrew Lunn \ 724d3b8c049SAndrew Lunn static void __exit dsa_tag_driver_module_exit(void) \ 725d3b8c049SAndrew Lunn { \ 726d3b8c049SAndrew Lunn dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \ 727d3b8c049SAndrew Lunn } \ 728d3b8c049SAndrew Lunn module_exit(dsa_tag_driver_module_exit) 729d3b8c049SAndrew Lunn 730d3b8c049SAndrew Lunn /** 731d3b8c049SAndrew Lunn * module_dsa_tag_drivers() - Helper macro for registering DSA tag 732d3b8c049SAndrew Lunn * drivers 733d3b8c049SAndrew Lunn * @__ops_array: Array of tag driver strucutres 734d3b8c049SAndrew Lunn * 735d3b8c049SAndrew Lunn * Helper macro for DSA tag drivers which do not do anything special 736d3b8c049SAndrew Lunn * in module init/exit. Each module may only use this macro once, and 737d3b8c049SAndrew Lunn * calling it replaces module_init() and module_exit(). 738d3b8c049SAndrew Lunn */ 739d3b8c049SAndrew Lunn #define module_dsa_tag_drivers(__ops_array) \ 740d3b8c049SAndrew Lunn dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array)) 741d3b8c049SAndrew Lunn 742d3b8c049SAndrew Lunn #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops 743d3b8c049SAndrew Lunn 744d3b8c049SAndrew Lunn /* Create a static structure we can build a linked list of dsa_tag 745d3b8c049SAndrew Lunn * drivers 746d3b8c049SAndrew Lunn */ 747d3b8c049SAndrew Lunn #define DSA_TAG_DRIVER(__ops) \ 748d3b8c049SAndrew Lunn static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \ 749d3b8c049SAndrew Lunn .ops = &__ops, \ 750d3b8c049SAndrew Lunn } 751d3b8c049SAndrew Lunn 752d3b8c049SAndrew Lunn /** 753d3b8c049SAndrew Lunn * module_dsa_tag_driver() - Helper macro for registering a single DSA tag 754d3b8c049SAndrew Lunn * driver 755d3b8c049SAndrew Lunn * @__ops: Single tag driver structures 756d3b8c049SAndrew Lunn * 757d3b8c049SAndrew Lunn * Helper macro for DSA tag drivers which do not do anything special 758d3b8c049SAndrew Lunn * in module init/exit. Each module may only use this macro once, and 759d3b8c049SAndrew Lunn * calling it replaces module_init() and module_exit(). 760d3b8c049SAndrew Lunn */ 761d3b8c049SAndrew Lunn #define module_dsa_tag_driver(__ops) \ 762d3b8c049SAndrew Lunn DSA_TAG_DRIVER(__ops); \ 763d3b8c049SAndrew Lunn \ 764d3b8c049SAndrew Lunn static struct dsa_tag_driver *dsa_tag_driver_array[] = { \ 765d3b8c049SAndrew Lunn &DSA_TAG_DRIVER_NAME(__ops) \ 766d3b8c049SAndrew Lunn }; \ 767d3b8c049SAndrew Lunn module_dsa_tag_drivers(dsa_tag_driver_array) 76891da11f8SLennert Buytenhek #endif 769d3b8c049SAndrew Lunn 770