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 | } |
| 32 | |
| 33 | void unregister_switch_driver(struct dsa_switch_driver *drv) |
| 34 | { |
| 35 | mutex_lock(&dsa_switch_drivers_mutex); |
| 36 | list_del_init(&drv->list); |
| 37 | mutex_unlock(&dsa_switch_drivers_mutex); |
| 38 | } |
| 39 | |
| 40 | static struct dsa_switch_driver * |
| 41 | dsa_switch_probe(struct mii_bus *bus, int sw_addr, char **_name) |
| 42 | { |
| 43 | struct dsa_switch_driver *ret; |
| 44 | struct list_head *list; |
| 45 | char *name; |
| 46 | |
| 47 | ret = NULL; |
| 48 | name = NULL; |
| 49 | |
| 50 | mutex_lock(&dsa_switch_drivers_mutex); |
| 51 | list_for_each(list, &dsa_switch_drivers) { |
| 52 | struct dsa_switch_driver *drv; |
| 53 | |
| 54 | drv = list_entry(list, struct dsa_switch_driver, list); |
| 55 | |
| 56 | name = drv->probe(bus, sw_addr); |
| 57 | if (name != NULL) { |
| 58 | ret = drv; |
| 59 | break; |
| 60 | } |
| 61 | } |
| 62 | mutex_unlock(&dsa_switch_drivers_mutex); |
| 63 | |
| 64 | *_name = name; |
| 65 | |
| 66 | return ret; |
| 67 | } |
| 68 | |
| 69 | |
| 70 | /* basic switch operations **************************************************/ |
| 71 | static struct dsa_switch * |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 72 | dsa_switch_setup(struct dsa_switch_tree *dst, int index, |
| 73 | struct device *parent, struct mii_bus *bus) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 74 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 75 | struct dsa_chip_data *pd = dst->pd->chip + index; |
| 76 | struct dsa_switch_driver *drv; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 77 | struct dsa_switch *ds; |
| 78 | int ret; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 79 | char *name; |
| 80 | int i; |
| 81 | |
| 82 | /* |
| 83 | * Probe for switch model. |
| 84 | */ |
| 85 | drv = dsa_switch_probe(bus, pd->sw_addr, &name); |
| 86 | if (drv == NULL) { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 87 | printk(KERN_ERR "%s[%d]: could not detect attached switch\n", |
| 88 | dst->master_netdev->name, index); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 89 | return ERR_PTR(-EINVAL); |
| 90 | } |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 91 | printk(KERN_INFO "%s[%d]: detected a %s switch\n", |
| 92 | dst->master_netdev->name, index, name); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 93 | |
| 94 | |
| 95 | /* |
| 96 | * Allocate and initialise switch state. |
| 97 | */ |
| 98 | ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL); |
| 99 | if (ds == NULL) |
| 100 | return ERR_PTR(-ENOMEM); |
| 101 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 102 | ds->dst = dst; |
| 103 | ds->index = index; |
| 104 | ds->pd = dst->pd->chip + index; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 105 | ds->drv = drv; |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 106 | ds->master_mii_bus = bus; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 107 | |
| 108 | |
| 109 | /* |
| 110 | * Validate supplied switch configuration. |
| 111 | */ |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 112 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
| 113 | char *name; |
| 114 | |
| 115 | name = pd->port_names[i]; |
| 116 | if (name == NULL) |
| 117 | continue; |
| 118 | |
| 119 | if (!strcmp(name, "cpu")) { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 120 | if (dst->cpu_switch != -1) { |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 121 | printk(KERN_ERR "multiple cpu ports?!\n"); |
| 122 | ret = -EINVAL; |
| 123 | goto out; |
| 124 | } |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 125 | dst->cpu_switch = index; |
| 126 | dst->cpu_port = i; |
| 127 | } else if (!strcmp(name, "dsa")) { |
| 128 | ds->dsa_port_mask |= 1 << i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 129 | } else { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 130 | ds->phys_port_mask |= 1 << i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 131 | } |
| 132 | } |
| 133 | |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 134 | |
| 135 | /* |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 136 | * If the CPU connects to this switch, set the switch tree |
| 137 | * tagging protocol to the preferred tagging format of this |
| 138 | * switch. |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 139 | */ |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 140 | if (ds->dst->cpu_switch == index) |
| 141 | ds->dst->tag_protocol = drv->tag_protocol; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 142 | |
| 143 | |
| 144 | /* |
| 145 | * Do basic register setup. |
| 146 | */ |
| 147 | ret = drv->setup(ds); |
| 148 | if (ret < 0) |
| 149 | goto out; |
| 150 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 151 | ret = drv->set_addr(ds, dst->master_netdev->dev_addr); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 152 | if (ret < 0) |
| 153 | goto out; |
| 154 | |
| 155 | ds->slave_mii_bus = mdiobus_alloc(); |
| 156 | if (ds->slave_mii_bus == NULL) { |
| 157 | ret = -ENOMEM; |
| 158 | goto out; |
| 159 | } |
| 160 | dsa_slave_mii_bus_init(ds); |
| 161 | |
| 162 | ret = mdiobus_register(ds->slave_mii_bus); |
| 163 | if (ret < 0) |
| 164 | goto out_free; |
| 165 | |
| 166 | |
| 167 | /* |
| 168 | * Create network devices for physical switch ports. |
| 169 | */ |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 170 | for (i = 0; i < DSA_MAX_PORTS; i++) { |
| 171 | struct net_device *slave_dev; |
| 172 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 173 | if (!(ds->phys_port_mask & (1 << i))) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 174 | continue; |
| 175 | |
| 176 | slave_dev = dsa_slave_create(ds, parent, i, pd->port_names[i]); |
| 177 | if (slave_dev == NULL) { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 178 | printk(KERN_ERR "%s[%d]: can't create dsa " |
| 179 | "slave device for port %d(%s)\n", |
| 180 | dst->master_netdev->name, |
| 181 | index, i, pd->port_names[i]); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 182 | continue; |
| 183 | } |
| 184 | |
| 185 | ds->ports[i] = slave_dev; |
| 186 | } |
| 187 | |
| 188 | return ds; |
| 189 | |
| 190 | out_free: |
| 191 | mdiobus_free(ds->slave_mii_bus); |
| 192 | out: |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 193 | kfree(ds); |
| 194 | return ERR_PTR(ret); |
| 195 | } |
| 196 | |
| 197 | static void dsa_switch_destroy(struct dsa_switch *ds) |
| 198 | { |
| 199 | } |
| 200 | |
| 201 | |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 202 | /* hooks for ethertype-less tagging formats *********************************/ |
| 203 | /* |
| 204 | * The original DSA tag format and some other tag formats have no |
| 205 | * ethertype, which means that we need to add a little hack to the |
| 206 | * networking receive path to make sure that received frames get |
| 207 | * the right ->protocol assigned to them when one of those tag |
| 208 | * formats is in use. |
| 209 | */ |
| 210 | bool dsa_uses_dsa_tags(void *dsa_ptr) |
| 211 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 212 | struct dsa_switch_tree *dst = dsa_ptr; |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 213 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 214 | return !!(dst->tag_protocol == htons(ETH_P_DSA)); |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 215 | } |
| 216 | |
Lennert Buytenhek | 396138f0 | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 217 | bool dsa_uses_trailer_tags(void *dsa_ptr) |
| 218 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 219 | struct dsa_switch_tree *dst = dsa_ptr; |
Lennert Buytenhek | 396138f0 | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 220 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 221 | return !!(dst->tag_protocol == htons(ETH_P_TRAILER)); |
Lennert Buytenhek | 396138f0 | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 222 | } |
| 223 | |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 224 | |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 225 | /* link polling *************************************************************/ |
| 226 | static void dsa_link_poll_work(struct work_struct *ugly) |
| 227 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 228 | struct dsa_switch_tree *dst; |
| 229 | int i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 230 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 231 | dst = container_of(ugly, struct dsa_switch_tree, link_poll_work); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 232 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 233 | for (i = 0; i < dst->pd->nr_chips; i++) { |
| 234 | struct dsa_switch *ds = dst->ds[i]; |
| 235 | |
| 236 | if (ds != NULL && ds->drv->poll_link != NULL) |
| 237 | ds->drv->poll_link(ds); |
| 238 | } |
| 239 | |
| 240 | mod_timer(&dst->link_poll_timer, round_jiffies(jiffies + HZ)); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 243 | static void dsa_link_poll_timer(unsigned long _dst) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 244 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 245 | struct dsa_switch_tree *dst = (void *)_dst; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 246 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 247 | schedule_work(&dst->link_poll_work); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | |
| 251 | /* platform driver init and cleanup *****************************************/ |
| 252 | static int dev_is_class(struct device *dev, void *class) |
| 253 | { |
| 254 | if (dev->class != NULL && !strcmp(dev->class->name, class)) |
| 255 | return 1; |
| 256 | |
| 257 | return 0; |
| 258 | } |
| 259 | |
| 260 | static struct device *dev_find_class(struct device *parent, char *class) |
| 261 | { |
| 262 | if (dev_is_class(parent, class)) { |
| 263 | get_device(parent); |
| 264 | return parent; |
| 265 | } |
| 266 | |
| 267 | return device_find_child(parent, class, dev_is_class); |
| 268 | } |
| 269 | |
| 270 | static struct mii_bus *dev_to_mii_bus(struct device *dev) |
| 271 | { |
| 272 | struct device *d; |
| 273 | |
| 274 | d = dev_find_class(dev, "mdio_bus"); |
| 275 | if (d != NULL) { |
| 276 | struct mii_bus *bus; |
| 277 | |
| 278 | bus = to_mii_bus(d); |
| 279 | put_device(d); |
| 280 | |
| 281 | return bus; |
| 282 | } |
| 283 | |
| 284 | return NULL; |
| 285 | } |
| 286 | |
| 287 | static struct net_device *dev_to_net_device(struct device *dev) |
| 288 | { |
| 289 | struct device *d; |
| 290 | |
| 291 | d = dev_find_class(dev, "net"); |
| 292 | if (d != NULL) { |
| 293 | struct net_device *nd; |
| 294 | |
| 295 | nd = to_net_dev(d); |
| 296 | dev_hold(nd); |
| 297 | put_device(d); |
| 298 | |
| 299 | return nd; |
| 300 | } |
| 301 | |
| 302 | return NULL; |
| 303 | } |
| 304 | |
| 305 | static int dsa_probe(struct platform_device *pdev) |
| 306 | { |
| 307 | static int dsa_version_printed; |
| 308 | struct dsa_platform_data *pd = pdev->dev.platform_data; |
| 309 | struct net_device *dev; |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 310 | struct dsa_switch_tree *dst; |
| 311 | int i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 312 | |
| 313 | if (!dsa_version_printed++) |
| 314 | printk(KERN_NOTICE "Distributed Switch Architecture " |
| 315 | "driver version %s\n", dsa_driver_version); |
| 316 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 317 | if (pd == NULL || pd->netdev == NULL) |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 318 | return -EINVAL; |
| 319 | |
| 320 | dev = dev_to_net_device(pd->netdev); |
| 321 | if (dev == NULL) |
| 322 | return -EINVAL; |
| 323 | |
| 324 | if (dev->dsa_ptr != NULL) { |
| 325 | dev_put(dev); |
| 326 | return -EEXIST; |
| 327 | } |
| 328 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 329 | dst = kzalloc(sizeof(*dst), GFP_KERNEL); |
| 330 | if (dst == NULL) { |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 331 | dev_put(dev); |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 332 | return -ENOMEM; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 333 | } |
| 334 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 335 | platform_set_drvdata(pdev, dst); |
| 336 | |
| 337 | dst->pd = pd; |
| 338 | dst->master_netdev = dev; |
| 339 | dst->cpu_switch = -1; |
| 340 | dst->cpu_port = -1; |
| 341 | |
| 342 | for (i = 0; i < pd->nr_chips; i++) { |
| 343 | struct mii_bus *bus; |
| 344 | struct dsa_switch *ds; |
| 345 | |
| 346 | bus = dev_to_mii_bus(pd->chip[i].mii_bus); |
| 347 | if (bus == NULL) { |
| 348 | printk(KERN_ERR "%s[%d]: no mii bus found for " |
| 349 | "dsa switch\n", dev->name, i); |
| 350 | continue; |
| 351 | } |
| 352 | |
| 353 | ds = dsa_switch_setup(dst, i, &pdev->dev, bus); |
| 354 | if (IS_ERR(ds)) { |
| 355 | printk(KERN_ERR "%s[%d]: couldn't create dsa switch " |
| 356 | "instance (error %ld)\n", dev->name, i, |
| 357 | PTR_ERR(ds)); |
| 358 | continue; |
| 359 | } |
| 360 | |
| 361 | dst->ds[i] = ds; |
| 362 | if (ds->drv->poll_link != NULL) |
| 363 | dst->link_poll_needed = 1; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 364 | } |
| 365 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 366 | /* |
| 367 | * If we use a tagging format that doesn't have an ethertype |
| 368 | * field, make sure that all packets from this point on get |
| 369 | * sent to the tag format's receive function. |
| 370 | */ |
| 371 | wmb(); |
| 372 | dev->dsa_ptr = (void *)dst; |
| 373 | |
| 374 | if (dst->link_poll_needed) { |
| 375 | INIT_WORK(&dst->link_poll_work, dsa_link_poll_work); |
| 376 | init_timer(&dst->link_poll_timer); |
| 377 | dst->link_poll_timer.data = (unsigned long)dst; |
| 378 | dst->link_poll_timer.function = dsa_link_poll_timer; |
| 379 | dst->link_poll_timer.expires = round_jiffies(jiffies + HZ); |
| 380 | add_timer(&dst->link_poll_timer); |
| 381 | } |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | static int dsa_remove(struct platform_device *pdev) |
| 387 | { |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 388 | struct dsa_switch_tree *dst = platform_get_drvdata(pdev); |
| 389 | int i; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 390 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 391 | if (dst->link_poll_needed) |
| 392 | del_timer_sync(&dst->link_poll_timer); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 393 | |
Tejun Heo | 7f6b0db | 2010-12-24 15:59:06 +0100 | [diff] [blame] | 394 | flush_work_sync(&dst->link_poll_work); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 395 | |
Lennert Buytenhek | e84665c | 2009-03-20 09:52:09 +0000 | [diff] [blame] | 396 | for (i = 0; i < dst->pd->nr_chips; i++) { |
| 397 | struct dsa_switch *ds = dst->ds[i]; |
| 398 | |
| 399 | if (ds != NULL) |
| 400 | dsa_switch_destroy(ds); |
| 401 | } |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 402 | |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | static void dsa_shutdown(struct platform_device *pdev) |
| 407 | { |
| 408 | } |
| 409 | |
| 410 | static struct platform_driver dsa_driver = { |
| 411 | .probe = dsa_probe, |
| 412 | .remove = dsa_remove, |
| 413 | .shutdown = dsa_shutdown, |
| 414 | .driver = { |
| 415 | .name = "dsa", |
| 416 | .owner = THIS_MODULE, |
| 417 | }, |
| 418 | }; |
| 419 | |
| 420 | static int __init dsa_init_module(void) |
| 421 | { |
| 422 | return platform_driver_register(&dsa_driver); |
| 423 | } |
| 424 | module_init(dsa_init_module); |
| 425 | |
| 426 | static void __exit dsa_cleanup_module(void) |
| 427 | { |
| 428 | platform_driver_unregister(&dsa_driver); |
| 429 | } |
| 430 | module_exit(dsa_cleanup_module); |
| 431 | |
Rusty Russell | 577d6a7 | 2011-01-24 14:32:52 -0600 | [diff] [blame] | 432 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>"); |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 433 | MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips"); |
| 434 | MODULE_LICENSE("GPL"); |
| 435 | MODULE_ALIAS("platform:dsa"); |