3 * A driver for "Hermes" chipset based Apple Airport wireless
6 * Copyright notice & release notes in file main.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 #define DRIVER_NAME "airport"
15 #define PFX DRIVER_NAME ": "
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/delay.h>
21 #include <asm/pmac_feature.h>
25 #define AIRPORT_IO_LEN (0x1000) /* one page */
28 struct macio_dev *mdev;
35 airport_suspend(struct macio_dev *mdev, pm_message_t state)
37 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
38 struct orinoco_private *priv = netdev_priv(dev);
42 printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);
44 err = orinoco_lock(priv, &flags);
46 printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
51 err = __orinoco_down(dev);
53 printk(KERN_WARNING "%s: PBOOK_SLEEP_NOW: Error %d downing interface\n",
56 netif_device_detach(dev);
58 priv->hw_unavailable++;
60 orinoco_unlock(priv, &flags);
62 disable_irq(dev->irq);
63 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
64 macio_get_of_node(mdev), 0, 0);
70 airport_resume(struct macio_dev *mdev)
72 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
73 struct orinoco_private *priv = netdev_priv(dev);
77 printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);
79 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
80 macio_get_of_node(mdev), 0, 1);
85 err = orinoco_reinit_firmware(dev);
87 printk(KERN_ERR "%s: Error %d re-initializing firmware on PBOOK_WAKE\n",
92 spin_lock_irqsave(&priv->lock, flags);
94 netif_device_attach(dev);
96 priv->hw_unavailable--;
98 if (priv->open && (!priv->hw_unavailable)) {
99 err = __orinoco_up(dev);
101 printk(KERN_ERR "%s: Error %d restarting card on PBOOK_WAKE\n",
106 spin_unlock_irqrestore(&priv->lock, flags);
112 airport_detach(struct macio_dev *mdev)
114 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
115 struct orinoco_private *priv = netdev_priv(dev);
116 struct airport *card = priv->card;
118 if (card->ndev_registered)
119 unregister_netdev(dev);
120 card->ndev_registered = 0;
122 if (card->irq_requested)
123 free_irq(dev->irq, dev);
124 card->irq_requested = 0;
127 iounmap(card->vaddr);
130 macio_release_resource(mdev, 0);
132 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
133 macio_get_of_node(mdev), 0, 0);
136 macio_set_drvdata(mdev, NULL);
137 free_orinocodev(dev);
142 static int airport_hard_reset(struct orinoco_private *priv)
144 /* It would be nice to power cycle the Airport for a real hard
145 * reset, but for some reason although it appears to
146 * re-initialize properly, it falls in a screaming heap
147 * shortly afterwards. */
149 struct net_device *dev = priv->ndev;
150 struct airport *card = priv->card;
152 /* Vitally important. If we don't do this it seems we get an
153 * interrupt somewhere during the power cycle, since
154 * hw_unavailable is already set it doesn't get ACKed, we get
155 * into an interrupt loop and the PMU decides to turn us
157 disable_irq(dev->irq);
159 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
160 macio_get_of_node(card->mdev), 0, 0);
162 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
163 macio_get_of_node(card->mdev), 0, 1);
166 enable_irq(dev->irq);
174 airport_attach(struct macio_dev *mdev, const struct of_device_id *match)
176 struct orinoco_private *priv;
177 struct net_device *dev;
178 struct airport *card;
179 unsigned long phys_addr;
182 if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
183 printk(KERN_ERR PFX "Wrong interrupt/addresses in OF tree\n");
187 /* Allocate space for private device-specific data */
188 dev = alloc_orinocodev(sizeof(*card), &mdev->ofdev.dev,
189 airport_hard_reset, NULL);
191 printk(KERN_ERR PFX "Cannot allocate network device\n");
194 priv = netdev_priv(dev);
200 if (macio_request_resource(mdev, 0, "airport")) {
201 printk(KERN_ERR PFX "can't request IO resource !\n");
202 free_orinocodev(dev);
206 SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
208 macio_set_drvdata(mdev, dev);
210 /* Setup interrupts & base address */
211 dev->irq = macio_irq(mdev, 0);
212 phys_addr = macio_resource_start(mdev, 0); /* Physical address */
213 printk(KERN_DEBUG PFX "Physical address %lx\n", phys_addr);
214 dev->base_addr = phys_addr;
215 card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
217 printk(KERN_ERR PFX "ioremap() failed\n");
221 hermes_struct_init(hw, card->vaddr, HERMES_16BIT_REGSPACING);
224 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
225 macio_get_of_node(mdev), 0, 1);
228 /* Reset it before we get the interrupt */
231 if (request_irq(dev->irq, orinoco_interrupt, 0, dev->name, dev)) {
232 printk(KERN_ERR PFX "Couldn't get IRQ %d\n", dev->irq);
235 card->irq_requested = 1;
237 /* Tell the stack we exist */
238 if (register_netdev(dev) != 0) {
239 printk(KERN_ERR PFX "register_netdev() failed\n");
242 printk(KERN_DEBUG PFX "Card registered for interface %s\n", dev->name);
243 card->ndev_registered = 1;
246 airport_detach(mdev);
248 } /* airport_attach */
251 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
252 " (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
253 MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
254 MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
255 MODULE_LICENSE("Dual MPL/GPL");
257 static struct of_device_id airport_match[] =
265 MODULE_DEVICE_TABLE(of, airport_match);
267 static struct macio_driver airport_driver = {
269 .match_table = airport_match,
270 .probe = airport_attach,
271 .remove = airport_detach,
272 .suspend = airport_suspend,
273 .resume = airport_resume,
279 printk(KERN_DEBUG "%s\n", version);
281 return macio_register_driver(&airport_driver);
287 macio_unregister_driver(&airport_driver);
290 module_init(init_airport);
291 module_exit(exit_airport);