Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 1 | /* |
| 2 | * net/dsa/dsa.c - Hardware switch handling |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 3 | * Copyright (c) 2008-2009 Marvell Semiconductor |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 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> |
| 13 | #include <linux/platform_device.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 14 | #include <linux/slab.h> |
Paul Gortmaker | 3a9a231 | 2011-05-27 09:12:25 -0400 | [diff] [blame] | 15 | #include <linux/module.h> |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 16 | #include <net/dsa.h> |
| 17 | #include "dsa_priv.h" |
| 18 | |
| 19 | char dsa_driver_version[] = "0.1"; |
| 20 | |
| 21 | |
| 22 | /* switch driver registration ***********************************************/ |
| 23 | static DEFINE_MUTEX(dsa_switch_drivers_mutex); |
| 24 | static LIST_HEAD(dsa_switch_drivers); |
| 25 | |
| 26 | void register_switch_driver(struct dsa_switch_driver *drv) |
| 27 | { |
| 28 | mutex_lock(&dsa_switch_drivers_mutex); |
| 29 | list_add_tail(&drv->list, &dsa_switch_drivers); |
| 30 | mutex_unlock(&dsa_switch_drivers_mutex); |
| 31 | } |
Ben Hutchings | ad293b8 | 2011-11-25 14:34:07 +0000 | [diff] [blame] | 32 | EXPORT_SYMBOL_GPL(register_switch_driver); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 33 | |
| 34 | void unregister_switch_driver(struct dsa_switch_driver *drv) |
| 35 | { |
| 36 | mutex_lock(&dsa_switch_drivers_mutex); |
| 37 | list_del_init(&drv->list); |
| 38 | mutex_unlock(&dsa_switch_drivers_mutex); |
| 39 | } |
Ben Hutchings | ad293b8 | 2011-11-25 14:34:07 +0000 | [diff] [blame] | 40 | EXPORT_SYMBOL_GPL(unregister_switch_driver); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 41 | |
| 42 | static struct dsa_switch_driver * |
| 43 | dsa_switch_probe(struct mii_bus *bus, int sw_addr, char **_name) |
| 44 | { |
| 45 | struct dsa_switch_driver *ret; |
| 46 | struct list_head *list; |
| 47 | char *name; |
| 48 | |
| 49 | ret = NULL; |
| 50 | name = NULL; |
| 51 | |
| 52 | mutex_lock(&dsa_switch_drivers_mutex); |
| 53 | list_for_each(list, &dsa_switch_drivers) { |
| 54 | struct dsa_switch_driver *drv; |
| 55 | |
| 56 | drv = list_entry(list, struct dsa_switch_driver, list); |
| 57 | |
| 58 | name = drv->probe(bus, sw_addr); |
| 59 | if (name != NULL) { |
| 60 | ret = drv; |
| 61 | break; |
| 62 | } |
| 63 | } |
| 64 | mutex_unlock(&dsa_switch_drivers_mutex); |
| 65 | |
| 66 | *_name = name; |
| 67 | |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | |
| 72 | /* basic switch operations **************************************************/ |
| 73 | static struct dsa_switch * |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 74 | dsa_switch_setup(struct dsa_switch_tree *dst, int index, |
| 75 | struct device *parent, struct mii_bus *bus) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 76 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 77 | struct dsa_chip_data *pd = dst->pd->chip + index; |
| 78 | struct dsa_switch_driver *drv; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 79 | struct dsa_switch *ds; |
| 80 | int ret; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 81 | char *name; |
| 82 | int i; |
Florian Fainelli | f9bf5a2 | 2013-01-21 09:58:51 +0000 | [diff] [blame^] | 83 | bool valid_name_found = false; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 84 | |
| 85 | /* |
| 86 | * Probe for switch model. |
| 87 | */ |
| 88 | drv = dsa_switch_probe(bus, pd->sw_addr, &name); |
| 89 | if (drv == NULL) { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 90 | printk(KERN_ERR "%s[%d]: could not detect attached switch\n", |
| 91 | dst->master_netdev->name, index); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 92 | return ERR_PTR(-EINVAL); |
| 93 | } |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 94 | printk(KERN_INFO "%s[%d]: detected a %s switch\n", |
| 95 | dst->master_netdev->name, index, name); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 96 | |
| 97 | |
| 98 | /* |
| 99 | * Allocate and initialise switch state. |
| 100 | */ |
| 101 | ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL); |
| 102 | if (ds == NULL) |
| 103 | return ERR_PTR(-ENOMEM); |
| 104 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 105 | ds->dst = dst; |
| 106 | ds->index = index; |
| 107 | ds->pd = dst->pd->chip + index; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 108 | ds->drv = drv; |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 109 | ds->master_mii_bus = bus; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 110 | |
| 111 | |
| 112 | /* |
| 113 | * Validate supplied switch configuration. |
| 114 | */ |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 115 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
| 116 | char *name; |
| 117 | |
| 118 | name = pd->port_names[i]; |
| 119 | if (name == NULL) |
| 120 | continue; |
| 121 | |
| 122 | if (!strcmp(name, "cpu")) { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 123 | if (dst->cpu_switch != -1) { |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 124 | printk(KERN_ERR "multiple cpu ports?!\n"); |
| 125 | ret = -EINVAL; |
| 126 | goto out; |
| 127 | } |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 128 | dst->cpu_switch = index; |
| 129 | dst->cpu_port = i; |
| 130 | } else if (!strcmp(name, "dsa")) { |
| 131 | ds->dsa_port_mask |= 1 << i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 132 | } else { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 133 | ds->phys_port_mask |= 1 << i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 134 | } |
Florian Fainelli | f9bf5a2 | 2013-01-21 09:58:51 +0000 | [diff] [blame^] | 135 | valid_name_found = true; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 136 | } |
| 137 | |
Florian Fainelli | f9bf5a2 | 2013-01-21 09:58:51 +0000 | [diff] [blame^] | 138 | if (!valid_name_found && i == DSA_MAX_PORTS) { |
| 139 | ret = -EINVAL; |
| 140 | goto out; |
| 141 | } |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 142 | |
| 143 | /* |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 144 | * If the CPU connects to this switch, set the switch tree |
| 145 | * tagging protocol to the preferred tagging format of this |
| 146 | * switch. |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 147 | */ |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 148 | if (ds->dst->cpu_switch == index) |
| 149 | ds->dst->tag_protocol = drv->tag_protocol; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 150 | |
| 151 | |
| 152 | /* |
| 153 | * Do basic register setup. |
| 154 | */ |
| 155 | ret = drv->setup(ds); |
| 156 | if (ret < 0) |
| 157 | goto out; |
| 158 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 159 | ret = drv->set_addr(ds, dst->master_netdev->dev_addr); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 160 | if (ret < 0) |
| 161 | goto out; |
| 162 | |
| 163 | ds->slave_mii_bus = mdiobus_alloc(); |
| 164 | if (ds->slave_mii_bus == NULL) { |
| 165 | ret = -ENOMEM; |
| 166 | goto out; |
| 167 | } |
| 168 | dsa_slave_mii_bus_init(ds); |
| 169 | |
| 170 | ret = mdiobus_register(ds->slave_mii_bus); |
| 171 | if (ret < 0) |
| 172 | goto out_free; |
| 173 | |
| 174 | |
| 175 | /* |
| 176 | * Create network devices for physical switch ports. |
| 177 | */ |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 178 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
| 179 | struct net_device *slave_dev; |
| 180 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 181 | if (!(ds->phys_port_mask & (1 << i))) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 182 | continue; |
| 183 | |
| 184 | slave_dev = dsa_slave_create(ds, parent, i, pd->port_names[i]); |
| 185 | if (slave_dev == NULL) { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 186 | printk(KERN_ERR "%s[%d]: can't create dsa " |
| 187 | "slave device for port %d(%s)\n", |
| 188 | dst->master_netdev->name, |
| 189 | index, i, pd->port_names[i]); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 190 | continue; |
| 191 | } |
| 192 | |
| 193 | ds->ports[i] = slave_dev; |
| 194 | } |
| 195 | |
| 196 | return ds; |
| 197 | |
| 198 | out_free: |
| 199 | mdiobus_free(ds->slave_mii_bus); |
| 200 | out: |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 201 | kfree(ds); |
| 202 | return ERR_PTR(ret); |
| 203 | } |
| 204 | |
| 205 | static void dsa_switch_destroy(struct dsa_switch *ds) |
| 206 | { |
| 207 | } |
| 208 | |
| 209 | |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 210 | /* link polling *************************************************************/ |
| 211 | static void dsa_link_poll_work(struct work_struct *ugly) |
| 212 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 213 | struct dsa_switch_tree *dst; |
| 214 | int i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 215 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 216 | dst = container_of(ugly, struct dsa_switch_tree, link_poll_work); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 217 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 218 | for (i = 0; i < dst->pd->nr_chips; i++) { |
| 219 | struct dsa_switch *ds = dst->ds[i]; |
| 220 | |
| 221 | if (ds != NULL && ds->drv->poll_link != NULL) |
| 222 | ds->drv->poll_link(ds); |
| 223 | } |
| 224 | |
| 225 | mod_timer(&dst->link_poll_timer, round_jiffies(jiffies + HZ)); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 226 | } |
| 227 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 228 | static void dsa_link_poll_timer(unsigned long _dst) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 229 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 230 | struct dsa_switch_tree *dst = (void *)_dst; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 231 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 232 | schedule_work(&dst->link_poll_work); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | |
| 236 | /* platform driver init and cleanup *****************************************/ |
| 237 | static int dev_is_class(struct device *dev, void *class) |
| 238 | { |
| 239 | if (dev->class != NULL && !strcmp(dev->class->name, class)) |
| 240 | return 1; |
| 241 | |
| 242 | return 0; |
| 243 | } |
| 244 | |
| 245 | static struct device *dev_find_class(struct device *parent, char *class) |
| 246 | { |
| 247 | if (dev_is_class(parent, class)) { |
| 248 | get_device(parent); |
| 249 | return parent; |
| 250 | } |
| 251 | |
| 252 | return device_find_child(parent, class, dev_is_class); |
| 253 | } |
| 254 | |
| 255 | static struct mii_bus *dev_to_mii_bus(struct device *dev) |
| 256 | { |
| 257 | struct device *d; |
| 258 | |
| 259 | d = dev_find_class(dev, "mdio_bus"); |
| 260 | if (d != NULL) { |
| 261 | struct mii_bus *bus; |
| 262 | |
| 263 | bus = to_mii_bus(d); |
| 264 | put_device(d); |
| 265 | |
| 266 | return bus; |
| 267 | } |
| 268 | |
| 269 | return NULL; |
| 270 | } |
| 271 | |
| 272 | static struct net_device *dev_to_net_device(struct device *dev) |
| 273 | { |
| 274 | struct device *d; |
| 275 | |
| 276 | d = dev_find_class(dev, "net"); |
| 277 | if (d != NULL) { |
| 278 | struct net_device *nd; |
| 279 | |
| 280 | nd = to_net_dev(d); |
| 281 | dev_hold(nd); |
| 282 | put_device(d); |
| 283 | |
| 284 | return nd; |
| 285 | } |
| 286 | |
| 287 | return NULL; |
| 288 | } |
| 289 | |
| 290 | static int dsa_probe(struct platform_device *pdev) |
| 291 | { |
| 292 | static int dsa_version_printed; |
| 293 | struct dsa_platform_data *pd = pdev->dev.platform_data; |
| 294 | struct net_device *dev; |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 295 | struct dsa_switch_tree *dst; |
| 296 | int i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 297 | |
| 298 | if (!dsa_version_printed++) |
| 299 | printk(KERN_NOTICE "Distributed Switch Architecture " |
| 300 | "driver version %s\n", dsa_driver_version); |
| 301 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 302 | if (pd == NULL || pd->netdev == NULL) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 303 | return -EINVAL; |
| 304 | |
| 305 | dev = dev_to_net_device(pd->netdev); |
| 306 | if (dev == NULL) |
| 307 | return -EINVAL; |
| 308 | |
| 309 | if (dev->dsa_ptr != NULL) { |
| 310 | dev_put(dev); |
| 311 | return -EEXIST; |
| 312 | } |
| 313 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 314 | dst = kzalloc(sizeof(*dst), GFP_KERNEL); |
| 315 | if (dst == NULL) { |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 316 | dev_put(dev); |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 317 | return -ENOMEM; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 318 | } |
| 319 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 320 | platform_set_drvdata(pdev, dst); |
| 321 | |
| 322 | dst->pd = pd; |
| 323 | dst->master_netdev = dev; |
| 324 | dst->cpu_switch = -1; |
| 325 | dst->cpu_port = -1; |
| 326 | |
| 327 | for (i = 0; i < pd->nr_chips; i++) { |
| 328 | struct mii_bus *bus; |
| 329 | struct dsa_switch *ds; |
| 330 | |
| 331 | bus = dev_to_mii_bus(pd->chip[i].mii_bus); |
| 332 | if (bus == NULL) { |
| 333 | printk(KERN_ERR "%s[%d]: no mii bus found for " |
| 334 | "dsa switch\n", dev->name, i); |
| 335 | continue; |
| 336 | } |
| 337 | |
| 338 | ds = dsa_switch_setup(dst, i, &pdev->dev, bus); |
| 339 | if (IS_ERR(ds)) { |
| 340 | printk(KERN_ERR "%s[%d]: couldn't create dsa switch " |
| 341 | "instance (error %ld)\n", dev->name, i, |
| 342 | PTR_ERR(ds)); |
| 343 | continue; |
| 344 | } |
| 345 | |
| 346 | dst->ds[i] = ds; |
| 347 | if (ds->drv->poll_link != NULL) |
| 348 | dst->link_poll_needed = 1; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 349 | } |
| 350 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 351 | /* |
| 352 | * If we use a tagging format that doesn't have an ethertype |
| 353 | * field, make sure that all packets from this point on get |
| 354 | * sent to the tag format's receive function. |
| 355 | */ |
| 356 | wmb(); |
| 357 | dev->dsa_ptr = (void *)dst; |
| 358 | |
| 359 | if (dst->link_poll_needed) { |
| 360 | INIT_WORK(&dst->link_poll_work, dsa_link_poll_work); |
| 361 | init_timer(&dst->link_poll_timer); |
| 362 | dst->link_poll_timer.data = (unsigned long)dst; |
| 363 | dst->link_poll_timer.function = dsa_link_poll_timer; |
| 364 | dst->link_poll_timer.expires = round_jiffies(jiffies + HZ); |
| 365 | add_timer(&dst->link_poll_timer); |
| 366 | } |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | |
| 371 | static int dsa_remove(struct platform_device *pdev) |
| 372 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 373 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); |
| 374 | int i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 375 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 376 | if (dst->link_poll_needed) |
| 377 | del_timer_sync(&dst->link_poll_timer); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 378 | |
Tejun Heo | 4382973 | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 379 | flush_work(&dst->link_poll_work); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 380 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 381 | for (i = 0; i < dst->pd->nr_chips; i++) { |
| 382 | struct dsa_switch *ds = dst->ds[i]; |
| 383 | |
| 384 | if (ds != NULL) |
| 385 | dsa_switch_destroy(ds); |
| 386 | } |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 387 | |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | static void dsa_shutdown(struct platform_device *pdev) |
| 392 | { |
| 393 | } |
| 394 | |
| 395 | static struct platform_driver dsa_driver = { |
| 396 | .probe = dsa_probe, |
| 397 | .remove = dsa_remove, |
| 398 | .shutdown = dsa_shutdown, |
| 399 | .driver = { |
| 400 | .name = "dsa", |
| 401 | .owner = THIS_MODULE, |
| 402 | }, |
| 403 | }; |
| 404 | |
| 405 | static int __init dsa_init_module(void) |
| 406 | { |
Ben Hutchings | 7df899c | 2011-11-25 14:35:02 +0000 | [diff] [blame] | 407 | int rc; |
| 408 | |
| 409 | rc = platform_driver_register(&dsa_driver); |
| 410 | if (rc) |
| 411 | return rc; |
| 412 | |
| 413 | #ifdef CONFIG_NET_DSA_TAG_DSA |
| 414 | dev_add_pack(&dsa_packet_type); |
| 415 | #endif |
| 416 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
| 417 | dev_add_pack(&edsa_packet_type); |
| 418 | #endif |
| 419 | #ifdef CONFIG_NET_DSA_TAG_TRAILER |
| 420 | dev_add_pack(&trailer_packet_type); |
| 421 | #endif |
| 422 | return 0; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 423 | } |
| 424 | module_init(dsa_init_module); |
| 425 | |
| 426 | static void __exit dsa_cleanup_module(void) |
| 427 | { |
Ben Hutchings | 7df899c | 2011-11-25 14:35:02 +0000 | [diff] [blame] | 428 | #ifdef CONFIG_NET_DSA_TAG_TRAILER |
| 429 | dev_remove_pack(&trailer_packet_type); |
| 430 | #endif |
| 431 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
| 432 | dev_remove_pack(&edsa_packet_type); |
| 433 | #endif |
| 434 | #ifdef CONFIG_NET_DSA_TAG_DSA |
| 435 | dev_remove_pack(&dsa_packet_type); |
| 436 | #endif |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 437 | platform_driver_unregister(&dsa_driver); |
| 438 | } |
| 439 | module_exit(dsa_cleanup_module); |
| 440 | |
Rusty Russell | 577d6a7 | 2011-01-24 14:32:52 -0600 | [diff] [blame] | 441 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>"); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 442 | MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips"); |
| 443 | MODULE_LICENSE("GPL"); |
| 444 | MODULE_ALIAS("platform:dsa"); |