2 * net/dsa/slave.c - Slave device handling
3 * Copyright (c) 2008-2009 Marvell Semiconductor
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.
11 #include <linux/list.h>
12 #include <linux/etherdevice.h>
13 #include <linux/phy.h>
14 #include <linux/of_net.h>
15 #include <linux/of_mdio.h>
18 /* slave mii_bus handling ***************************************************/
19 static int dsa_slave_phy_read(struct mii_bus
*bus
, int addr
, int reg
)
21 struct dsa_switch
*ds
= bus
->priv
;
23 if (ds
->phys_mii_mask
& (1 << addr
))
24 return ds
->drv
->phy_read(ds
, addr
, reg
);
29 static int dsa_slave_phy_write(struct mii_bus
*bus
, int addr
, int reg
, u16 val
)
31 struct dsa_switch
*ds
= bus
->priv
;
33 if (ds
->phys_mii_mask
& (1 << addr
))
34 return ds
->drv
->phy_write(ds
, addr
, reg
, val
);
39 void dsa_slave_mii_bus_init(struct dsa_switch
*ds
)
41 ds
->slave_mii_bus
->priv
= (void *)ds
;
42 ds
->slave_mii_bus
->name
= "dsa slave smi";
43 ds
->slave_mii_bus
->read
= dsa_slave_phy_read
;
44 ds
->slave_mii_bus
->write
= dsa_slave_phy_write
;
45 snprintf(ds
->slave_mii_bus
->id
, MII_BUS_ID_SIZE
, "dsa-%d:%.2x",
46 ds
->index
, ds
->pd
->sw_addr
);
47 ds
->slave_mii_bus
->parent
= ds
->master_dev
;
51 /* slave device handling ****************************************************/
52 static int dsa_slave_init(struct net_device
*dev
)
54 struct dsa_slave_priv
*p
= netdev_priv(dev
);
56 dev
->iflink
= p
->parent
->dst
->master_netdev
->ifindex
;
61 static int dsa_slave_open(struct net_device
*dev
)
63 struct dsa_slave_priv
*p
= netdev_priv(dev
);
64 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
65 struct dsa_switch
*ds
= p
->parent
;
68 if (!(master
->flags
& IFF_UP
))
71 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
)) {
72 err
= dev_uc_add(master
, dev
->dev_addr
);
77 if (dev
->flags
& IFF_ALLMULTI
) {
78 err
= dev_set_allmulti(master
, 1);
82 if (dev
->flags
& IFF_PROMISC
) {
83 err
= dev_set_promiscuity(master
, 1);
88 if (ds
->drv
->port_enable
) {
89 err
= ds
->drv
->port_enable(ds
, p
->port
, p
->phy
);
100 if (dev
->flags
& IFF_PROMISC
)
101 dev_set_promiscuity(master
, 0);
103 if (dev
->flags
& IFF_ALLMULTI
)
104 dev_set_allmulti(master
, -1);
106 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
107 dev_uc_del(master
, dev
->dev_addr
);
112 static int dsa_slave_close(struct net_device
*dev
)
114 struct dsa_slave_priv
*p
= netdev_priv(dev
);
115 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
116 struct dsa_switch
*ds
= p
->parent
;
121 dev_mc_unsync(master
, dev
);
122 dev_uc_unsync(master
, dev
);
123 if (dev
->flags
& IFF_ALLMULTI
)
124 dev_set_allmulti(master
, -1);
125 if (dev
->flags
& IFF_PROMISC
)
126 dev_set_promiscuity(master
, -1);
128 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
129 dev_uc_del(master
, dev
->dev_addr
);
131 if (ds
->drv
->port_disable
)
132 ds
->drv
->port_disable(ds
, p
->port
, p
->phy
);
137 static void dsa_slave_change_rx_flags(struct net_device
*dev
, int change
)
139 struct dsa_slave_priv
*p
= netdev_priv(dev
);
140 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
142 if (change
& IFF_ALLMULTI
)
143 dev_set_allmulti(master
, dev
->flags
& IFF_ALLMULTI
? 1 : -1);
144 if (change
& IFF_PROMISC
)
145 dev_set_promiscuity(master
, dev
->flags
& IFF_PROMISC
? 1 : -1);
148 static void dsa_slave_set_rx_mode(struct net_device
*dev
)
150 struct dsa_slave_priv
*p
= netdev_priv(dev
);
151 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
153 dev_mc_sync(master
, dev
);
154 dev_uc_sync(master
, dev
);
157 static int dsa_slave_set_mac_address(struct net_device
*dev
, void *a
)
159 struct dsa_slave_priv
*p
= netdev_priv(dev
);
160 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
161 struct sockaddr
*addr
= a
;
164 if (!is_valid_ether_addr(addr
->sa_data
))
165 return -EADDRNOTAVAIL
;
167 if (!(dev
->flags
& IFF_UP
))
170 if (!ether_addr_equal(addr
->sa_data
, master
->dev_addr
)) {
171 err
= dev_uc_add(master
, addr
->sa_data
);
176 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
177 dev_uc_del(master
, dev
->dev_addr
);
180 ether_addr_copy(dev
->dev_addr
, addr
->sa_data
);
185 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
187 struct dsa_slave_priv
*p
= netdev_priv(dev
);
190 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
195 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
197 struct dsa_slave_priv
*p
= netdev_priv(dev
);
199 return p
->xmit(skb
, dev
);
202 static netdev_tx_t
dsa_slave_notag_xmit(struct sk_buff
*skb
,
203 struct net_device
*dev
)
205 struct dsa_slave_priv
*p
= netdev_priv(dev
);
207 skb
->dev
= p
->parent
->dst
->master_netdev
;
214 /* ethtool operations *******************************************************/
216 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
218 struct dsa_slave_priv
*p
= netdev_priv(dev
);
222 if (p
->phy
!= NULL
) {
223 err
= phy_read_status(p
->phy
);
225 err
= phy_ethtool_gset(p
->phy
, cmd
);
232 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
234 struct dsa_slave_priv
*p
= netdev_priv(dev
);
237 return phy_ethtool_sset(p
->phy
, cmd
);
242 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
243 struct ethtool_drvinfo
*drvinfo
)
245 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
246 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
247 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
248 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
251 static int dsa_slave_nway_reset(struct net_device
*dev
)
253 struct dsa_slave_priv
*p
= netdev_priv(dev
);
256 return genphy_restart_aneg(p
->phy
);
261 static u32
dsa_slave_get_link(struct net_device
*dev
)
263 struct dsa_slave_priv
*p
= netdev_priv(dev
);
265 if (p
->phy
!= NULL
) {
266 genphy_update_link(p
->phy
);
273 static void dsa_slave_get_strings(struct net_device
*dev
,
274 uint32_t stringset
, uint8_t *data
)
276 struct dsa_slave_priv
*p
= netdev_priv(dev
);
277 struct dsa_switch
*ds
= p
->parent
;
279 if (stringset
== ETH_SS_STATS
) {
280 int len
= ETH_GSTRING_LEN
;
282 strncpy(data
, "tx_packets", len
);
283 strncpy(data
+ len
, "tx_bytes", len
);
284 strncpy(data
+ 2 * len
, "rx_packets", len
);
285 strncpy(data
+ 3 * len
, "rx_bytes", len
);
286 if (ds
->drv
->get_strings
!= NULL
)
287 ds
->drv
->get_strings(ds
, p
->port
, data
+ 4 * len
);
291 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
292 struct ethtool_stats
*stats
,
295 struct dsa_slave_priv
*p
= netdev_priv(dev
);
296 struct dsa_switch
*ds
= p
->parent
;
298 data
[0] = p
->dev
->stats
.tx_packets
;
299 data
[1] = p
->dev
->stats
.tx_bytes
;
300 data
[2] = p
->dev
->stats
.rx_packets
;
301 data
[3] = p
->dev
->stats
.rx_bytes
;
302 if (ds
->drv
->get_ethtool_stats
!= NULL
)
303 ds
->drv
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
306 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
308 struct dsa_slave_priv
*p
= netdev_priv(dev
);
309 struct dsa_switch
*ds
= p
->parent
;
311 if (sset
== ETH_SS_STATS
) {
315 if (ds
->drv
->get_sset_count
!= NULL
)
316 count
+= ds
->drv
->get_sset_count(ds
);
324 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
326 struct dsa_slave_priv
*p
= netdev_priv(dev
);
327 struct dsa_switch
*ds
= p
->parent
;
329 if (ds
->drv
->get_wol
)
330 ds
->drv
->get_wol(ds
, p
->port
, w
);
333 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
335 struct dsa_slave_priv
*p
= netdev_priv(dev
);
336 struct dsa_switch
*ds
= p
->parent
;
337 int ret
= -EOPNOTSUPP
;
339 if (ds
->drv
->set_wol
)
340 ret
= ds
->drv
->set_wol(ds
, p
->port
, w
);
345 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
347 struct dsa_slave_priv
*p
= netdev_priv(dev
);
348 struct dsa_switch
*ds
= p
->parent
;
351 if (!ds
->drv
->set_eee
)
354 ret
= ds
->drv
->set_eee(ds
, p
->port
, p
->phy
, e
);
359 ret
= phy_ethtool_set_eee(p
->phy
, e
);
364 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
366 struct dsa_slave_priv
*p
= netdev_priv(dev
);
367 struct dsa_switch
*ds
= p
->parent
;
370 if (!ds
->drv
->get_eee
)
373 ret
= ds
->drv
->get_eee(ds
, p
->port
, e
);
378 ret
= phy_ethtool_get_eee(p
->phy
, e
);
383 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
384 .get_settings
= dsa_slave_get_settings
,
385 .set_settings
= dsa_slave_set_settings
,
386 .get_drvinfo
= dsa_slave_get_drvinfo
,
387 .nway_reset
= dsa_slave_nway_reset
,
388 .get_link
= dsa_slave_get_link
,
389 .get_strings
= dsa_slave_get_strings
,
390 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
391 .get_sset_count
= dsa_slave_get_sset_count
,
392 .set_wol
= dsa_slave_set_wol
,
393 .get_wol
= dsa_slave_get_wol
,
394 .set_eee
= dsa_slave_set_eee
,
395 .get_eee
= dsa_slave_get_eee
,
398 static const struct net_device_ops dsa_slave_netdev_ops
= {
399 .ndo_init
= dsa_slave_init
,
400 .ndo_open
= dsa_slave_open
,
401 .ndo_stop
= dsa_slave_close
,
402 .ndo_start_xmit
= dsa_slave_xmit
,
403 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
404 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
405 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
406 .ndo_do_ioctl
= dsa_slave_ioctl
,
409 static void dsa_slave_adjust_link(struct net_device
*dev
)
411 struct dsa_slave_priv
*p
= netdev_priv(dev
);
412 struct dsa_switch
*ds
= p
->parent
;
413 unsigned int status_changed
= 0;
415 if (p
->old_link
!= p
->phy
->link
) {
417 p
->old_link
= p
->phy
->link
;
420 if (p
->old_duplex
!= p
->phy
->duplex
) {
422 p
->old_duplex
= p
->phy
->duplex
;
425 if (p
->old_pause
!= p
->phy
->pause
) {
427 p
->old_pause
= p
->phy
->pause
;
430 if (ds
->drv
->adjust_link
&& status_changed
)
431 ds
->drv
->adjust_link(ds
, p
->port
, p
->phy
);
434 phy_print_status(p
->phy
);
437 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
438 struct fixed_phy_status
*status
)
440 struct dsa_slave_priv
*p
= netdev_priv(dev
);
441 struct dsa_switch
*ds
= p
->parent
;
443 if (ds
->drv
->fixed_link_update
)
444 ds
->drv
->fixed_link_update(ds
, p
->port
, status
);
449 /* slave device setup *******************************************************/
450 static void dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
451 struct net_device
*slave_dev
)
453 struct dsa_switch
*ds
= p
->parent
;
454 struct dsa_chip_data
*cd
= ds
->pd
;
455 struct device_node
*phy_dn
, *port_dn
;
456 bool phy_is_fixed
= false;
460 port_dn
= cd
->port_dn
[p
->port
];
461 p
->phy_interface
= of_get_phy_mode(port_dn
);
463 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
464 if (of_phy_is_fixed_link(port_dn
)) {
465 /* In the case of a fixed PHY, the DT node associated
466 * to the fixed PHY is the Port DT node
468 ret
= of_phy_register_fixed_link(port_dn
);
470 pr_err("failed to register fixed PHY\n");
477 if (ds
->drv
->get_phy_flags
)
478 phy_flags
= ds
->drv
->get_phy_flags(ds
, p
->port
);
481 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
482 dsa_slave_adjust_link
, phy_flags
,
485 if (p
->phy
&& phy_is_fixed
)
486 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
488 /* We could not connect to a designated PHY, so use the switch internal
492 p
->phy
= ds
->slave_mii_bus
->phy_map
[p
->port
];
494 pr_info("attached PHY at address %d [%s]\n",
495 p
->phy
->addr
, p
->phy
->drv
->name
);
498 int dsa_slave_suspend(struct net_device
*slave_dev
)
500 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
502 netif_device_detach(slave_dev
);
515 int dsa_slave_resume(struct net_device
*slave_dev
)
517 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
519 netif_device_attach(slave_dev
);
530 dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
531 int port
, char *name
)
533 struct net_device
*master
= ds
->dst
->master_netdev
;
534 struct net_device
*slave_dev
;
535 struct dsa_slave_priv
*p
;
538 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
539 NET_NAME_UNKNOWN
, ether_setup
);
540 if (slave_dev
== NULL
)
543 slave_dev
->features
= master
->vlan_features
;
544 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
545 eth_hw_addr_inherit(slave_dev
, master
);
546 slave_dev
->tx_queue_len
= 0;
547 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
549 SET_NETDEV_DEV(slave_dev
, parent
);
550 slave_dev
->dev
.of_node
= ds
->pd
->port_dn
[port
];
551 slave_dev
->vlan_features
= master
->vlan_features
;
553 p
= netdev_priv(slave_dev
);
558 switch (ds
->dst
->tag_protocol
) {
559 #ifdef CONFIG_NET_DSA_TAG_DSA
560 case DSA_TAG_PROTO_DSA
:
561 p
->xmit
= dsa_netdev_ops
.xmit
;
564 #ifdef CONFIG_NET_DSA_TAG_EDSA
565 case DSA_TAG_PROTO_EDSA
:
566 p
->xmit
= edsa_netdev_ops
.xmit
;
569 #ifdef CONFIG_NET_DSA_TAG_TRAILER
570 case DSA_TAG_PROTO_TRAILER
:
571 p
->xmit
= trailer_netdev_ops
.xmit
;
574 #ifdef CONFIG_NET_DSA_TAG_BRCM
575 case DSA_TAG_PROTO_BRCM
:
576 p
->xmit
= brcm_netdev_ops
.xmit
;
580 p
->xmit
= dsa_slave_notag_xmit
;
588 dsa_slave_phy_setup(p
, slave_dev
);
590 ret
= register_netdev(slave_dev
);
592 printk(KERN_ERR
"%s: error %d registering interface %s\n",
593 master
->name
, ret
, slave_dev
->name
);
594 free_netdev(slave_dev
);
598 netif_carrier_off(slave_dev
);
600 if (p
->phy
!= NULL
) {
601 if (ds
->drv
->get_phy_flags(ds
, port
))
602 p
->phy
->dev_flags
|= ds
->drv
->get_phy_flags(ds
, port
);
604 phy_attach(slave_dev
, dev_name(&p
->phy
->dev
),
605 PHY_INTERFACE_MODE_GMII
);
607 p
->phy
->autoneg
= AUTONEG_ENABLE
;
610 p
->phy
->advertising
= p
->phy
->supported
| ADVERTISED_Autoneg
;
611 phy_start_aneg(p
->phy
);