3 * A driver for "Hermes" chipset based Apple Airport wireless
6 * Copyright notice & release notes in file orinoco.c
8 * Note specific to airport stub:
10 * 0.05 : first version of the new split driver
11 * 0.06 : fix possible hang on powerup, add sleep support
14 #include <linux/config.h>
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/ptrace.h>
20 #include <linux/slab.h>
21 #include <linux/string.h>
22 #include <linux/timer.h>
23 #include <linux/ioport.h>
24 #include <linux/netdevice.h>
25 #include <linux/if_arp.h>
26 #include <linux/etherdevice.h>
27 #include <linux/wireless.h>
30 #include <asm/system.h>
31 #include <asm/current.h>
33 #include <asm/machdep.h>
34 #include <asm/pmac_feature.h>
36 #include <asm/uaccess.h>
40 #define AIRPORT_IO_LEN (0x1000) /* one page */
43 struct macio_dev *mdev;
50 airport_suspend(struct macio_dev *mdev, u32 state)
52 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
53 struct orinoco_private *priv = dev->priv;
57 printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);
59 err = orinoco_lock(priv, &flags);
61 printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
66 err = __orinoco_down(dev);
68 printk(KERN_WARNING "%s: PBOOK_SLEEP_NOW: Error %d downing interface\n",
71 netif_device_detach(dev);
73 priv->hw_unavailable++;
75 orinoco_unlock(priv, &flags);
77 disable_irq(dev->irq);
78 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 0);
84 airport_resume(struct macio_dev *mdev)
86 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
87 struct orinoco_private *priv = dev->priv;
91 printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);
93 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 1);
94 set_current_state(TASK_UNINTERRUPTIBLE);
95 schedule_timeout(HZ/5);
99 err = orinoco_reinit_firmware(dev);
101 printk(KERN_ERR "%s: Error %d re-initializing firmware on PBOOK_WAKE\n",
106 spin_lock_irqsave(&priv->lock, flags);
108 netif_device_attach(dev);
110 priv->hw_unavailable--;
112 if (priv->open && (! priv->hw_unavailable)) {
113 err = __orinoco_up(dev);
115 printk(KERN_ERR "%s: Error %d restarting card on PBOOK_WAKE\n",
120 spin_unlock_irqrestore(&priv->lock, flags);
126 airport_detach(struct macio_dev *mdev)
128 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
129 struct orinoco_private *priv = dev->priv;
130 struct airport *card = priv->card;
132 if (card->ndev_registered)
133 unregister_netdev(dev);
134 card->ndev_registered = 0;
136 if (card->irq_requested)
137 free_irq(dev->irq, dev);
138 card->irq_requested = 0;
141 iounmap(card->vaddr);
144 macio_release_resource(mdev, 0);
146 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 0);
147 set_current_state(TASK_UNINTERRUPTIBLE);
148 schedule_timeout(HZ);
150 macio_set_drvdata(mdev, NULL);
156 static int airport_hard_reset(struct orinoco_private *priv)
158 /* It would be nice to power cycle the Airport for a real hard
159 * reset, but for some reason although it appears to
160 * re-initialize properly, it falls in a screaming heap
161 * shortly afterwards. */
163 struct net_device *dev = priv->ndev;
164 struct airport *card = priv->card;
166 /* Vitally important. If we don't do this it seems we get an
167 * interrupt somewhere during the power cycle, since
168 * hw_unavailable is already set it doesn't get ACKed, we get
169 * into an interrupt loop and the the PMU decides to turn us
171 disable_irq(dev->irq);
173 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(card->mdev), 0, 0);
174 set_current_state(TASK_UNINTERRUPTIBLE);
175 schedule_timeout(HZ);
176 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(card->mdev), 0, 1);
177 set_current_state(TASK_UNINTERRUPTIBLE);
178 schedule_timeout(HZ);
180 enable_irq(dev->irq);
181 schedule_timeout(HZ);
188 airport_attach(struct macio_dev *mdev, const struct of_match *match)
190 struct orinoco_private *priv;
191 struct net_device *dev;
192 struct airport *card;
193 unsigned long phys_addr;
196 if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
197 printk(KERN_ERR "airport: wrong interrupt/addresses in OF tree\n");
201 /* Allocate space for private device-specific data */
202 dev = alloc_orinocodev(sizeof(*card), airport_hard_reset);
204 printk(KERN_ERR "airport: can't allocate device datas\n");
213 if (macio_request_resource(mdev, 0, "airport")) {
214 printk(KERN_ERR "airport: can't request IO resource !\n");
219 SET_MODULE_OWNER(dev);
220 SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
222 macio_set_drvdata(mdev, dev);
224 /* Setup interrupts & base address */
225 dev->irq = macio_irq(mdev, 0);
226 phys_addr = macio_resource_start(mdev, 0); /* Physical address */
227 printk(KERN_DEBUG "Airport at physical address %lx\n", phys_addr);
228 dev->base_addr = phys_addr;
229 card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
231 printk("airport: ioremap() failed\n");
235 hermes_struct_init(hw, (ulong)card->vaddr,
236 HERMES_MEM, HERMES_16BIT_REGSPACING);
239 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 1);
240 set_current_state(TASK_UNINTERRUPTIBLE);
241 schedule_timeout(HZ);
243 /* Reset it before we get the interrupt */
246 if (request_irq(dev->irq, orinoco_interrupt, 0, "Airport", dev)) {
247 printk(KERN_ERR "airport: Couldn't get IRQ %d\n", dev->irq);
250 card->irq_requested = 1;
252 /* Tell the stack we exist */
253 if (register_netdev(dev) != 0) {
254 printk(KERN_ERR "airport: register_netdev() failed\n");
257 printk(KERN_DEBUG "airport: card registered for interface %s\n", dev->name);
258 card->ndev_registered = 1;
261 airport_detach(mdev);
263 } /* airport_attach */
266 static char version[] __initdata = "airport.c 0.13e (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
267 MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
268 MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
269 MODULE_LICENSE("Dual MPL/GPL");
271 static struct of_match airport_match[] =
275 .type = OF_ANY_MATCH,
276 .compatible = OF_ANY_MATCH
281 static struct macio_driver airport_driver =
284 .match_table = airport_match,
285 .probe = airport_attach,
286 .remove = airport_detach,
287 .suspend = airport_suspend,
288 .resume = airport_resume,
294 printk(KERN_DEBUG "%s\n", version);
296 return macio_register_driver(&airport_driver);
302 return macio_unregister_driver(&airport_driver);
305 module_init(init_airport);
306 module_exit(exit_airport);