1 files changed, 304 insertions, 0 deletions

diff --git a/drivers/net/wireless/airport.c b/drivers/net/wireless/airport.c
new file mode 100644
index 000000000000..a1dc2a196087
--- /dev/null
+++ b/drivers/net/wireless/airport.c
@@ -0,0 +1,304 @@
+/* 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/config.h>
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/wireless.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/current.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#include <asm/irq.h>
+#include <asm/uaccess.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, u32 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 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_match *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), airport_hard_reset);
+        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_MODULE_OWNER(dev);
+        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_match airport_match[] = 
+{
+        {
+        .name           = "radio",
+        .type           = OF_ANY_MATCH,
+        .compatible     = OF_ANY_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)
+{
+        return macio_unregister_driver(&airport_driver);
+}
+
+module_init(init_airport);
+module_exit(exit_airport);