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 #define DRIVER_NAME "airport"
15 #define PFX DRIVER_NAME ": "
17 #include <linux/config.h>
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/ptrace.h>
23 #include <linux/slab.h>
24 #include <linux/string.h>
25 #include <linux/timer.h>
26 #include <linux/ioport.h>
27 #include <linux/netdevice.h>
28 #include <linux/if_arp.h>
29 #include <linux/etherdevice.h>
30 #include <linux/wireless.h>
33 #include <asm/system.h>
34 #include <asm/current.h>
36 #include <asm/machdep.h>
37 #include <asm/pmac_feature.h>
39 #include <asm/uaccess.h>
43 #define AIRPORT_IO_LEN (0x1000) /* one page */
46 struct macio_dev *mdev;
53 airport_suspend(struct macio_dev *mdev, u32 state)
55 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
56 struct orinoco_private *priv = netdev_priv(dev);
60 printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);
62 err = orinoco_lock(priv, &flags);
64 printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
69 err = __orinoco_down(dev);
71 printk(KERN_WARNING "%s: PBOOK_SLEEP_NOW: Error %d downing interface\n",
74 netif_device_detach(dev);
76 priv->hw_unavailable++;
78 orinoco_unlock(priv, &flags);
80 disable_irq(dev->irq);
81 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 0);
87 airport_resume(struct macio_dev *mdev)
89 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
90 struct orinoco_private *priv = netdev_priv(dev);
94 printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);
96 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 1);
101 err = orinoco_reinit_firmware(dev);
103 printk(KERN_ERR "%s: Error %d re-initializing firmware on PBOOK_WAKE\n",
108 spin_lock_irqsave(&priv->lock, flags);
110 netif_device_attach(dev);
112 priv->hw_unavailable--;
114 if (priv->open && (! priv->hw_unavailable)) {
115 err = __orinoco_up(dev);
117 printk(KERN_ERR "%s: Error %d restarting card on PBOOK_WAKE\n",
122 spin_unlock_irqrestore(&priv->lock, flags);
128 airport_detach(struct macio_dev *mdev)
130 struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
131 struct orinoco_private *priv = netdev_priv(dev);
132 struct airport *card = priv->card;
134 if (card->ndev_registered)
135 unregister_netdev(dev);
136 card->ndev_registered = 0;
138 if (card->irq_requested)
139 free_irq(dev->irq, dev);
140 card->irq_requested = 0;
143 iounmap(card->vaddr);
146 macio_release_resource(mdev, 0);
148 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 0);
151 macio_set_drvdata(mdev, NULL);
152 free_orinocodev(dev);
157 static int airport_hard_reset(struct orinoco_private *priv)
159 /* It would be nice to power cycle the Airport for a real hard
160 * reset, but for some reason although it appears to
161 * re-initialize properly, it falls in a screaming heap
162 * shortly afterwards. */
164 struct net_device *dev = priv->ndev;
165 struct airport *card = priv->card;
167 /* Vitally important. If we don't do this it seems we get an
168 * interrupt somewhere during the power cycle, since
169 * hw_unavailable is already set it doesn't get ACKed, we get
170 * into an interrupt loop and the the PMU decides to turn us
172 disable_irq(dev->irq);
174 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(card->mdev), 0, 0);
176 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(card->mdev), 0, 1);
179 enable_irq(dev->irq);
187 airport_attach(struct macio_dev *mdev, const struct of_match *match)
189 struct orinoco_private *priv;
190 struct net_device *dev;
191 struct airport *card;
192 unsigned long phys_addr;
195 if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
196 printk(KERN_ERR PFX "Wrong interrupt/addresses in OF tree\n");
200 /* Allocate space for private device-specific data */
201 dev = alloc_orinocodev(sizeof(*card), airport_hard_reset);
203 printk(KERN_ERR PFX "Cannot allocate network device\n");
206 priv = netdev_priv(dev);
212 if (macio_request_resource(mdev, 0, "airport")) {
213 printk(KERN_ERR PFX "can't request IO resource !\n");
214 free_orinocodev(dev);
218 SET_MODULE_OWNER(dev);
219 SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
221 macio_set_drvdata(mdev, dev);
223 /* Setup interrupts & base address */
224 dev->irq = macio_irq(mdev, 0);
225 phys_addr = macio_resource_start(mdev, 0); /* Physical address */
226 printk(KERN_DEBUG PFX "Physical address %lx\n", phys_addr);
227 dev->base_addr = phys_addr;
228 card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
230 printk(KERN_ERR PFX "ioremap() failed\n");
234 hermes_struct_init(hw, card->vaddr, HERMES_16BIT_REGSPACING);
237 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 1);
240 /* Reset it before we get the interrupt */
243 if (request_irq(dev->irq, orinoco_interrupt, 0, dev->name, dev)) {
244 printk(KERN_ERR PFX "Couldn't get IRQ %d\n", dev->irq);
247 card->irq_requested = 1;
249 /* Tell the stack we exist */
250 if (register_netdev(dev) != 0) {
251 printk(KERN_ERR PFX "register_netdev() failed\n");
254 printk(KERN_DEBUG PFX "Card registered for interface %s\n", dev->name);
255 card->ndev_registered = 1;
258 airport_detach(mdev);
260 } /* airport_attach */
263 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
264 " (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
265 MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
266 MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
267 MODULE_LICENSE("Dual MPL/GPL");
269 static struct of_match airport_match[] =
273 .type = OF_ANY_MATCH,
274 .compatible = OF_ANY_MATCH
279 static struct macio_driver airport_driver =
282 .match_table = airport_match,
283 .probe = airport_attach,
284 .remove = airport_detach,
285 .suspend = airport_suspend,
286 .resume = airport_resume,
292 printk(KERN_DEBUG "%s\n", version);
294 return macio_register_driver(&airport_driver);
300 return macio_unregister_driver(&airport_driver);
303 module_init(init_airport);
304 module_exit(exit_airport);