1 files changed, 286 insertions, 0 deletions

diff --git a/drivers/net/wireless/orinoco/airport.c b/drivers/net/wireless/orinoco/airport.c
new file mode 100644
index 0000000..28f1cae
--- /dev/null
+++ b/drivers/net/wireless/orinoco/airport.c
@@ -0,0 +1,286 @@
+/* airport.c
+ *
+ * A driver for "Hermes" chipset based Apple Airport wireless
+ * card.
+ *
+ * Copyright notice & release notes in file orinoco.c
+ * 
+ * Note specific to airport stub:
+ * 
+ *  0.05 : first version of the new split driver
+ *  0.06 : fix possible hang on powerup, add sleep support
+ */
+
+#define DRIVER_NAME "airport"
+#define PFX DRIVER_NAME ": "
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/pmac_feature.h>
+
+#include "orinoco.h"
+
+#define AIRPORT_IO_LEN	(0x1000)	/* one page */
+
+struct airport {
+	struct macio_dev *mdev;
+	void __iomem *vaddr;
+	int irq_requested;
+	int ndev_registered;
+};
+
+static int
+airport_suspend(struct macio_dev *mdev, pm_message_t state)
+{
+	struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
+	struct orinoco_private *priv = netdev_priv(dev);
+	unsigned long flags;
+	int err;
+
+	printk(KERN_DEBUG "%s: Airport entering sleep mode\n", dev->name);
+
+	err = orinoco_lock(priv, &flags);
+	if (err) {
+		printk(KERN_ERR "%s: hw_unavailable on PBOOK_SLEEP_NOW\n",
+		       dev->name);
+		return 0;
+	}
+
+	err = __orinoco_down(dev);
+	if (err)
+		printk(KERN_WARNING "%s: PBOOK_SLEEP_NOW: Error %d downing interface\n",
+		       dev->name, err);
+
+	netif_device_detach(dev);
+
+	priv->hw_unavailable++;
+
+	orinoco_unlock(priv, &flags);
+
+	disable_irq(dev->irq);
+	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 0);
+
+	return 0;
+}
+
+static int
+airport_resume(struct macio_dev *mdev)
+{
+	struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
+	struct orinoco_private *priv = netdev_priv(dev);
+	unsigned long flags;
+	int err;
+
+	printk(KERN_DEBUG "%s: Airport waking up\n", dev->name);
+
+	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 1);
+	msleep(200);
+
+	enable_irq(dev->irq);
+
+	err = orinoco_reinit_firmware(dev);
+	if (err) {
+		printk(KERN_ERR "%s: Error %d re-initializing firmware on PBOOK_WAKE\n",
+		       dev->name, err);
+		return 0;
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	netif_device_attach(dev);
+
+	priv->hw_unavailable--;
+
+	if (priv->open && (! priv->hw_unavailable)) {
+		err = __orinoco_up(dev);
+		if (err)
+			printk(KERN_ERR "%s: Error %d restarting card on PBOOK_WAKE\n",
+			       dev->name, err);
+	}
+
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+static int
+airport_detach(struct macio_dev *mdev)
+{
+	struct net_device *dev = dev_get_drvdata(&mdev->ofdev.dev);
+	struct orinoco_private *priv = netdev_priv(dev);
+	struct airport *card = priv->card;
+
+	if (card->ndev_registered)
+		unregister_netdev(dev);
+	card->ndev_registered = 0;
+
+	if (card->irq_requested)
+		free_irq(dev->irq, dev);
+	card->irq_requested = 0;
+
+	if (card->vaddr)
+		iounmap(card->vaddr);
+	card->vaddr = NULL;
+
+	macio_release_resource(mdev, 0);
+
+	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 0);
+	ssleep(1);
+
+	macio_set_drvdata(mdev, NULL);
+	free_orinocodev(dev);
+
+	return 0;
+}
+
+static int airport_hard_reset(struct orinoco_private *priv)
+{
+	/* It would be nice to power cycle the Airport for a real hard
+	 * reset, but for some reason although it appears to
+	 * re-initialize properly, it falls in a screaming heap
+	 * shortly afterwards. */
+#if 0
+	struct net_device *dev = priv->ndev;
+	struct airport *card = priv->card;
+
+	/* Vitally important.  If we don't do this it seems we get an
+	 * interrupt somewhere during the power cycle, since
+	 * hw_unavailable is already set it doesn't get ACKed, we get
+	 * into an interrupt loop and the PMU decides to turn us
+	 * off. */
+	disable_irq(dev->irq);
+
+	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(card->mdev), 0, 0);
+	ssleep(1);
+	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(card->mdev), 0, 1);
+	ssleep(1);
+
+	enable_irq(dev->irq);
+	ssleep(1);
+#endif
+
+	return 0;
+}
+
+static int
+airport_attach(struct macio_dev *mdev, const struct of_device_id *match)
+{
+	struct orinoco_private *priv;
+	struct net_device *dev;
+	struct airport *card;
+	unsigned long phys_addr;
+	hermes_t *hw;
+
+	if (macio_resource_count(mdev) < 1 || macio_irq_count(mdev) < 1) {
+		printk(KERN_ERR PFX "Wrong interrupt/addresses in OF tree\n");
+		return -ENODEV;
+	}
+
+	/* Allocate space for private device-specific data */
+	dev = alloc_orinocodev(sizeof(*card), &mdev->ofdev.dev,
+			       airport_hard_reset, NULL);
+	if (! dev) {
+		printk(KERN_ERR PFX "Cannot allocate network device\n");
+		return -ENODEV;
+	}
+	priv = netdev_priv(dev);
+	card = priv->card;
+
+	hw = &priv->hw;
+	card->mdev = mdev;
+
+	if (macio_request_resource(mdev, 0, "airport")) {
+		printk(KERN_ERR PFX "can't request IO resource !\n");
+		free_orinocodev(dev);
+		return -EBUSY;
+	}
+
+	SET_NETDEV_DEV(dev, &mdev->ofdev.dev);
+
+	macio_set_drvdata(mdev, dev);
+
+	/* Setup interrupts & base address */
+	dev->irq = macio_irq(mdev, 0);
+	phys_addr = macio_resource_start(mdev, 0);  /* Physical address */
+	printk(KERN_DEBUG PFX "Physical address %lx\n", phys_addr);
+	dev->base_addr = phys_addr;
+	card->vaddr = ioremap(phys_addr, AIRPORT_IO_LEN);
+	if (!card->vaddr) {
+		printk(KERN_ERR PFX "ioremap() failed\n");
+		goto failed;
+	}
+
+	hermes_struct_init(hw, card->vaddr, HERMES_16BIT_REGSPACING);
+		
+	/* Power up card */
+	pmac_call_feature(PMAC_FTR_AIRPORT_ENABLE, macio_get_of_node(mdev), 0, 1);
+	ssleep(1);
+
+	/* Reset it before we get the interrupt */
+	hermes_init(hw);
+
+	if (request_irq(dev->irq, orinoco_interrupt, 0, dev->name, dev)) {
+		printk(KERN_ERR PFX "Couldn't get IRQ %d\n", dev->irq);
+		goto failed;
+	}
+	card->irq_requested = 1;
+
+	/* Tell the stack we exist */
+	if (register_netdev(dev) != 0) {
+		printk(KERN_ERR PFX "register_netdev() failed\n");
+		goto failed;
+	}
+	printk(KERN_DEBUG PFX "Card registered for interface %s\n", dev->name);
+	card->ndev_registered = 1;
+	return 0;
+ failed:
+	airport_detach(mdev);
+	return -ENODEV;
+}				/* airport_attach */
+
+
+static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
+	" (Benjamin Herrenschmidt <benh@kernel.crashing.org>)";
+MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>");
+MODULE_DESCRIPTION("Driver for the Apple Airport wireless card.");
+MODULE_LICENSE("Dual MPL/GPL");
+
+static struct of_device_id airport_match[] = 
+{
+	{
+	.name 		= "radio",
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE (of, airport_match);
+
+static struct macio_driver airport_driver = 
+{
+	.name 		= DRIVER_NAME,
+	.match_table	= airport_match,
+	.probe		= airport_attach,
+	.remove		= airport_detach,
+	.suspend	= airport_suspend,
+	.resume		= airport_resume,
+};
+
+static int __init
+init_airport(void)
+{
+	printk(KERN_DEBUG "%s\n", version);
+
+	return macio_register_driver(&airport_driver);
+}
+
+static void __exit
+exit_airport(void)
+{
+	macio_unregister_driver(&airport_driver);
+}
+
+module_init(init_airport);
+module_exit(exit_airport);