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91da11f8 LB |
1 | /* |
2 | * net/dsa/slave.c - Slave device handling | |
e84665c9 | 3 | * Copyright (c) 2008-2009 Marvell Semiconductor |
91da11f8 LB |
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 | #include <linux/list.h> | |
12 | #include <linux/netdevice.h> | |
df02c6ff | 13 | #include <linux/etherdevice.h> |
91da11f8 LB |
14 | #include <linux/phy.h> |
15 | #include "dsa_priv.h" | |
16 | ||
17 | /* slave mii_bus handling ***************************************************/ | |
18 | static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) | |
19 | { | |
20 | struct dsa_switch *ds = bus->priv; | |
21 | ||
e84665c9 | 22 | if (ds->phys_port_mask & (1 << addr)) |
91da11f8 LB |
23 | return ds->drv->phy_read(ds, addr, reg); |
24 | ||
25 | return 0xffff; | |
26 | } | |
27 | ||
28 | static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
29 | { | |
30 | struct dsa_switch *ds = bus->priv; | |
31 | ||
e84665c9 | 32 | if (ds->phys_port_mask & (1 << addr)) |
91da11f8 LB |
33 | return ds->drv->phy_write(ds, addr, reg, val); |
34 | ||
35 | return 0; | |
36 | } | |
37 | ||
38 | void dsa_slave_mii_bus_init(struct dsa_switch *ds) | |
39 | { | |
40 | ds->slave_mii_bus->priv = (void *)ds; | |
41 | ds->slave_mii_bus->name = "dsa slave smi"; | |
42 | ds->slave_mii_bus->read = dsa_slave_phy_read; | |
43 | ds->slave_mii_bus->write = dsa_slave_phy_write; | |
f490be04 FF |
44 | snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x", |
45 | ds->index, ds->pd->sw_addr); | |
e84665c9 | 46 | ds->slave_mii_bus->parent = &ds->master_mii_bus->dev; |
91da11f8 LB |
47 | } |
48 | ||
49 | ||
50 | /* slave device handling ****************************************************/ | |
c0840801 LB |
51 | static int dsa_slave_init(struct net_device *dev) |
52 | { | |
53 | struct dsa_slave_priv *p = netdev_priv(dev); | |
c0840801 | 54 | |
e84665c9 | 55 | dev->iflink = p->parent->dst->master_netdev->ifindex; |
c0840801 LB |
56 | |
57 | return 0; | |
58 | } | |
59 | ||
91da11f8 LB |
60 | static int dsa_slave_open(struct net_device *dev) |
61 | { | |
df02c6ff | 62 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 63 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
64 | int err; |
65 | ||
66 | if (!(master->flags & IFF_UP)) | |
67 | return -ENETDOWN; | |
68 | ||
8feedbb4 | 69 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
a748ee24 | 70 | err = dev_uc_add(master, dev->dev_addr); |
df02c6ff LB |
71 | if (err < 0) |
72 | goto out; | |
73 | } | |
74 | ||
75 | if (dev->flags & IFF_ALLMULTI) { | |
76 | err = dev_set_allmulti(master, 1); | |
77 | if (err < 0) | |
78 | goto del_unicast; | |
79 | } | |
80 | if (dev->flags & IFF_PROMISC) { | |
81 | err = dev_set_promiscuity(master, 1); | |
82 | if (err < 0) | |
83 | goto clear_allmulti; | |
84 | } | |
85 | ||
91da11f8 | 86 | return 0; |
df02c6ff LB |
87 | |
88 | clear_allmulti: | |
89 | if (dev->flags & IFF_ALLMULTI) | |
90 | dev_set_allmulti(master, -1); | |
91 | del_unicast: | |
8feedbb4 | 92 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 93 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
94 | out: |
95 | return err; | |
91da11f8 LB |
96 | } |
97 | ||
98 | static int dsa_slave_close(struct net_device *dev) | |
99 | { | |
df02c6ff | 100 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 101 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
102 | |
103 | dev_mc_unsync(master, dev); | |
a748ee24 | 104 | dev_uc_unsync(master, dev); |
df02c6ff LB |
105 | if (dev->flags & IFF_ALLMULTI) |
106 | dev_set_allmulti(master, -1); | |
107 | if (dev->flags & IFF_PROMISC) | |
108 | dev_set_promiscuity(master, -1); | |
109 | ||
8feedbb4 | 110 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 111 | dev_uc_del(master, dev->dev_addr); |
df02c6ff | 112 | |
91da11f8 LB |
113 | return 0; |
114 | } | |
115 | ||
116 | static void dsa_slave_change_rx_flags(struct net_device *dev, int change) | |
117 | { | |
118 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 119 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
120 | |
121 | if (change & IFF_ALLMULTI) | |
122 | dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
123 | if (change & IFF_PROMISC) | |
124 | dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); | |
125 | } | |
126 | ||
127 | static void dsa_slave_set_rx_mode(struct net_device *dev) | |
128 | { | |
129 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 130 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
131 | |
132 | dev_mc_sync(master, dev); | |
a748ee24 | 133 | dev_uc_sync(master, dev); |
91da11f8 LB |
134 | } |
135 | ||
df02c6ff | 136 | static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
91da11f8 | 137 | { |
df02c6ff | 138 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 139 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
140 | struct sockaddr *addr = a; |
141 | int err; | |
142 | ||
143 | if (!is_valid_ether_addr(addr->sa_data)) | |
144 | return -EADDRNOTAVAIL; | |
145 | ||
146 | if (!(dev->flags & IFF_UP)) | |
147 | goto out; | |
148 | ||
8feedbb4 | 149 | if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
a748ee24 | 150 | err = dev_uc_add(master, addr->sa_data); |
df02c6ff LB |
151 | if (err < 0) |
152 | return err; | |
153 | } | |
154 | ||
8feedbb4 | 155 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 156 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
157 | |
158 | out: | |
159 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
91da11f8 LB |
160 | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
165 | { | |
166 | struct dsa_slave_priv *p = netdev_priv(dev); | |
91da11f8 LB |
167 | |
168 | if (p->phy != NULL) | |
28b04113 | 169 | return phy_mii_ioctl(p->phy, ifr, cmd); |
91da11f8 LB |
170 | |
171 | return -EOPNOTSUPP; | |
172 | } | |
173 | ||
174 | ||
175 | /* ethtool operations *******************************************************/ | |
176 | static int | |
177 | dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
178 | { | |
179 | struct dsa_slave_priv *p = netdev_priv(dev); | |
180 | int err; | |
181 | ||
182 | err = -EOPNOTSUPP; | |
183 | if (p->phy != NULL) { | |
184 | err = phy_read_status(p->phy); | |
185 | if (err == 0) | |
186 | err = phy_ethtool_gset(p->phy, cmd); | |
187 | } | |
188 | ||
189 | return err; | |
190 | } | |
191 | ||
192 | static int | |
193 | dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
194 | { | |
195 | struct dsa_slave_priv *p = netdev_priv(dev); | |
196 | ||
197 | if (p->phy != NULL) | |
198 | return phy_ethtool_sset(p->phy, cmd); | |
199 | ||
200 | return -EOPNOTSUPP; | |
201 | } | |
202 | ||
203 | static void dsa_slave_get_drvinfo(struct net_device *dev, | |
204 | struct ethtool_drvinfo *drvinfo) | |
205 | { | |
7826d43f JP |
206 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
207 | strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); | |
208 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
209 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
210 | } |
211 | ||
212 | static int dsa_slave_nway_reset(struct net_device *dev) | |
213 | { | |
214 | struct dsa_slave_priv *p = netdev_priv(dev); | |
215 | ||
216 | if (p->phy != NULL) | |
217 | return genphy_restart_aneg(p->phy); | |
218 | ||
219 | return -EOPNOTSUPP; | |
220 | } | |
221 | ||
222 | static u32 dsa_slave_get_link(struct net_device *dev) | |
223 | { | |
224 | struct dsa_slave_priv *p = netdev_priv(dev); | |
225 | ||
226 | if (p->phy != NULL) { | |
227 | genphy_update_link(p->phy); | |
228 | return p->phy->link; | |
229 | } | |
230 | ||
231 | return -EOPNOTSUPP; | |
232 | } | |
233 | ||
234 | static void dsa_slave_get_strings(struct net_device *dev, | |
235 | uint32_t stringset, uint8_t *data) | |
236 | { | |
237 | struct dsa_slave_priv *p = netdev_priv(dev); | |
238 | struct dsa_switch *ds = p->parent; | |
239 | ||
240 | if (stringset == ETH_SS_STATS) { | |
241 | int len = ETH_GSTRING_LEN; | |
242 | ||
243 | strncpy(data, "tx_packets", len); | |
244 | strncpy(data + len, "tx_bytes", len); | |
245 | strncpy(data + 2 * len, "rx_packets", len); | |
246 | strncpy(data + 3 * len, "rx_bytes", len); | |
247 | if (ds->drv->get_strings != NULL) | |
248 | ds->drv->get_strings(ds, p->port, data + 4 * len); | |
249 | } | |
250 | } | |
251 | ||
252 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
253 | struct ethtool_stats *stats, | |
254 | uint64_t *data) | |
255 | { | |
256 | struct dsa_slave_priv *p = netdev_priv(dev); | |
257 | struct dsa_switch *ds = p->parent; | |
258 | ||
259 | data[0] = p->dev->stats.tx_packets; | |
260 | data[1] = p->dev->stats.tx_bytes; | |
261 | data[2] = p->dev->stats.rx_packets; | |
262 | data[3] = p->dev->stats.rx_bytes; | |
263 | if (ds->drv->get_ethtool_stats != NULL) | |
264 | ds->drv->get_ethtool_stats(ds, p->port, data + 4); | |
265 | } | |
266 | ||
267 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
268 | { | |
269 | struct dsa_slave_priv *p = netdev_priv(dev); | |
270 | struct dsa_switch *ds = p->parent; | |
271 | ||
272 | if (sset == ETH_SS_STATS) { | |
273 | int count; | |
274 | ||
275 | count = 4; | |
276 | if (ds->drv->get_sset_count != NULL) | |
277 | count += ds->drv->get_sset_count(ds); | |
278 | ||
279 | return count; | |
280 | } | |
281 | ||
282 | return -EOPNOTSUPP; | |
283 | } | |
284 | ||
285 | static const struct ethtool_ops dsa_slave_ethtool_ops = { | |
286 | .get_settings = dsa_slave_get_settings, | |
287 | .set_settings = dsa_slave_set_settings, | |
288 | .get_drvinfo = dsa_slave_get_drvinfo, | |
289 | .nway_reset = dsa_slave_nway_reset, | |
290 | .get_link = dsa_slave_get_link, | |
91da11f8 LB |
291 | .get_strings = dsa_slave_get_strings, |
292 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
293 | .get_sset_count = dsa_slave_get_sset_count, | |
294 | }; | |
295 | ||
d442ad4a SH |
296 | #ifdef CONFIG_NET_DSA_TAG_DSA |
297 | static const struct net_device_ops dsa_netdev_ops = { | |
c0840801 | 298 | .ndo_init = dsa_slave_init, |
d442ad4a SH |
299 | .ndo_open = dsa_slave_open, |
300 | .ndo_stop = dsa_slave_close, | |
301 | .ndo_start_xmit = dsa_xmit, | |
302 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, | |
303 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a SH |
304 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
305 | .ndo_do_ioctl = dsa_slave_ioctl, | |
306 | }; | |
307 | #endif | |
308 | #ifdef CONFIG_NET_DSA_TAG_EDSA | |
309 | static const struct net_device_ops edsa_netdev_ops = { | |
c0840801 | 310 | .ndo_init = dsa_slave_init, |
d442ad4a SH |
311 | .ndo_open = dsa_slave_open, |
312 | .ndo_stop = dsa_slave_close, | |
313 | .ndo_start_xmit = edsa_xmit, | |
314 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, | |
315 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a SH |
316 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
317 | .ndo_do_ioctl = dsa_slave_ioctl, | |
318 | }; | |
319 | #endif | |
320 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
321 | static const struct net_device_ops trailer_netdev_ops = { | |
c0840801 | 322 | .ndo_init = dsa_slave_init, |
d442ad4a SH |
323 | .ndo_open = dsa_slave_open, |
324 | .ndo_stop = dsa_slave_close, | |
325 | .ndo_start_xmit = trailer_xmit, | |
326 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, | |
327 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a SH |
328 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
329 | .ndo_do_ioctl = dsa_slave_ioctl, | |
330 | }; | |
331 | #endif | |
91da11f8 LB |
332 | |
333 | /* slave device setup *******************************************************/ | |
334 | struct net_device * | |
335 | dsa_slave_create(struct dsa_switch *ds, struct device *parent, | |
336 | int port, char *name) | |
337 | { | |
e84665c9 | 338 | struct net_device *master = ds->dst->master_netdev; |
91da11f8 LB |
339 | struct net_device *slave_dev; |
340 | struct dsa_slave_priv *p; | |
341 | int ret; | |
342 | ||
343 | slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), | |
344 | name, ether_setup); | |
345 | if (slave_dev == NULL) | |
346 | return slave_dev; | |
347 | ||
348 | slave_dev->features = master->vlan_features; | |
349 | SET_ETHTOOL_OPS(slave_dev, &dsa_slave_ethtool_ops); | |
2fcc8005 | 350 | eth_hw_addr_inherit(slave_dev, master); |
91da11f8 | 351 | slave_dev->tx_queue_len = 0; |
d442ad4a | 352 | |
e84665c9 | 353 | switch (ds->dst->tag_protocol) { |
cf85d08f LB |
354 | #ifdef CONFIG_NET_DSA_TAG_DSA |
355 | case htons(ETH_P_DSA): | |
d442ad4a | 356 | slave_dev->netdev_ops = &dsa_netdev_ops; |
cf85d08f LB |
357 | break; |
358 | #endif | |
91da11f8 LB |
359 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
360 | case htons(ETH_P_EDSA): | |
d442ad4a | 361 | slave_dev->netdev_ops = &edsa_netdev_ops; |
91da11f8 | 362 | break; |
396138f0 LB |
363 | #endif |
364 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
365 | case htons(ETH_P_TRAILER): | |
d442ad4a | 366 | slave_dev->netdev_ops = &trailer_netdev_ops; |
396138f0 | 367 | break; |
91da11f8 LB |
368 | #endif |
369 | default: | |
370 | BUG(); | |
371 | } | |
d442ad4a | 372 | |
91da11f8 LB |
373 | SET_NETDEV_DEV(slave_dev, parent); |
374 | slave_dev->vlan_features = master->vlan_features; | |
375 | ||
376 | p = netdev_priv(slave_dev); | |
377 | p->dev = slave_dev; | |
378 | p->parent = ds; | |
379 | p->port = port; | |
380 | p->phy = ds->slave_mii_bus->phy_map[port]; | |
381 | ||
382 | ret = register_netdev(slave_dev); | |
383 | if (ret) { | |
384 | printk(KERN_ERR "%s: error %d registering interface %s\n", | |
385 | master->name, ret, slave_dev->name); | |
386 | free_netdev(slave_dev); | |
387 | return NULL; | |
388 | } | |
389 | ||
390 | netif_carrier_off(slave_dev); | |
391 | ||
392 | if (p->phy != NULL) { | |
fb28ad35 | 393 | phy_attach(slave_dev, dev_name(&p->phy->dev), |
f9a8f83b | 394 | PHY_INTERFACE_MODE_GMII); |
91da11f8 LB |
395 | |
396 | p->phy->autoneg = AUTONEG_ENABLE; | |
397 | p->phy->speed = 0; | |
398 | p->phy->duplex = 0; | |
399 | p->phy->advertising = p->phy->supported | ADVERTISED_Autoneg; | |
400 | phy_start_aneg(p->phy); | |
401 | } | |
402 | ||
403 | return slave_dev; | |
404 | } |