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 <linux/of_device.h>
22 #include <asm/pmac_feature.h>
26 #define AIRPORT_IO_LEN (0x1000) /* one page */
29 struct macio_dev *mdev;
37 airport_suspend(struct macio_dev *mdev, pm_message_t state)
39 struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
40 struct net_device *dev = priv->ndev;
41 struct airport *card = priv->card;
45 printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);
47 err = orinoco_lock(priv, &flags);
49 printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
55 orinoco_unlock(priv, &flags);
57 disable_irq(card->irq);
58 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
59 macio_get_of_node(mdev), 0, 0);
65 airport_resume(struct macio_dev *mdev)
67 struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
68 struct net_device *dev = priv->ndev;
69 struct airport *card = priv->card;
73 printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);
75 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
76 macio_get_of_node(mdev), 0, 1);
79 enable_irq(card->irq);
81 priv->hw.ops->lock_irqsave(&priv->lock, &flags);
82 err = orinoco_up(priv);
83 priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
89 airport_detach(struct macio_dev *mdev)
91 struct orinoco_private *priv = dev_get_drvdata(&mdev->ofdev.dev);
92 struct airport *card = priv->card;
94 if (card->ndev_registered)
96 card->ndev_registered = 0;
98 if (card->irq_requested)
99 free_irq(card->irq, priv);
100 card->irq_requested = 0;
103 iounmap(card->vaddr);
106 macio_release_resource(mdev, 0);
108 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
109 macio_get_of_node(mdev), 0, 0);
112 macio_set_drvdata(mdev, NULL);
113 free_orinocodev(priv);
118 static int airport_hard_reset(struct orinoco_private *priv)
120 /* It would be nice to power cycle the Airport for a real hard
121 * reset, but for some reason although it appears to
122 * re-initialize properly, it falls in a screaming heap
123 * shortly afterwards. */
125 struct airport *card = priv->card;
127 /* Vitally important. If we don't do this it seems we get an
128 * interrupt somewhere during the power cycle, since
129 * hw_unavailable is already set it doesn't get ACKed, we get
130 * into an interrupt loop and the PMU decides to turn us
132 disable_irq(card->irq);
134 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
135 macio_get_of_node(card->mdev), 0, 0);
137 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
138 macio_get_of_node(card->mdev), 0, 1);
141 enable_irq(card->irq);
149 airport_attach(struct macio_dev *mdev, const struct of_device_id *match)
151 struct orinoco_private *priv;
152 struct airport *card;
153 unsigned long phys_addr;
156 if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
157 printk(KERN_ERR PFX "Wrong interrupt/addresses in OF tree\n");
161 /* Allocate space for private device-specific data */
162 priv = alloc_orinocodev(sizeof(*card), &mdev->ofdev.dev,
163 airport_hard_reset, NULL);
165 printk(KERN_ERR PFX "Cannot allocate network device\n");
173 if (macio_request_resource(mdev, 0, DRIVER_NAME)) {
174 printk(KERN_ERR PFX "can't request IO resource !\n");
175 free_orinocodev(priv);
179 macio_set_drvdata(mdev, priv);
181 /* Setup interrupts & base address */
182 card->irq = macio_irq(mdev, 0);
183 phys_addr = macio_resource_start(mdev, 0); /* Physical address */
184 printk(KERN_DEBUG PFX "Physical address %lx\n", phys_addr);
185 card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
187 printk(KERN_ERR PFX "ioremap() failed\n");
191 hermes_struct_init(hw, card->vaddr, HERMES_16BIT_REGSPACING);
194 pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE,
195 macio_get_of_node(mdev), 0, 1);
198 /* Reset it before we get the interrupt */
201 if (request_irq(card->irq, orinoco_interrupt, 0, DRIVER_NAME, priv)) {
202 printk(KERN_ERR PFX "Couldn't get IRQ %d\n", card->irq);
205 card->irq_requested = 1;
207 /* Initialise the main driver */
208 if (orinoco_init(priv) != 0) {
209 printk(KERN_ERR PFX "orinoco_init() failed\n");
213 /* Register an interface with the stack */
214 if (orinoco_if_add(priv, phys_addr, card->irq, NULL) != 0) {
215 printk(KERN_ERR PFX "orinoco_if_add() failed\n");
218 card->ndev_registered = 1;
221 airport_detach(mdev);
223 } /* airport_attach */
226 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
227 " (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
228 MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
229 MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
230 MODULE_LICENSE("Dual MPL/GPL");
232 static const struct of_device_id airport_match[] = {
239 MODULE_DEVICE_TABLE(of, airport_match);
241 static struct macio_driver airport_driver = {
244 .owner = THIS_MODULE,
245 .of_match_table = airport_match,
247 .probe = airport_attach,
248 .remove = airport_detach,
249 .suspend = airport_suspend,
250 .resume = airport_resume,
256 printk(KERN_DEBUG "%s\n", version);
258 return macio_register_driver(&airport_driver);
264 macio_unregister_driver(&airport_driver);
267 module_init(init_airport);
268 module_exit(exit_airport);