drivers/net/wireless/orinoco_pci.h

   1 /* orinoco_pci.h
   2  *
   3  * Common code for all Orinoco drivers for PCI devices, including
   4  * both native PCI and PCMCIA-to-PCI bridges.
   5  *
   6  * Copyright (C) 2005, Pavel Roskin.
   7  * See orinoco.c for license.
   8  */
   9
  10 #ifndef _ORINOCO_PCI_H
  11 #define _ORINOCO_PCI_H
  12
  13 #include <linux/netdevice.h>
  14
  15 /* Driver specific data */
  16 struct orinoco_pci_card {
  17         void __iomem *bridge_io;
  18         void __iomem *attr_io;
  19 };
  20
  21 #ifdef CONFIG_PM
  22 static int orinoco_pci_suspend(struct pci_dev *pdev, pm_message_t state)
  23 {
  24         struct net_device *dev = pci_get_drvdata(pdev);
  25         struct orinoco_private *priv = netdev_priv(dev);
  26         unsigned long flags;
  27         int err;
  28
  29         err = orinoco_lock(priv, &flags);
  30         if (err) {
  31                 printk(KERN_ERR "%s: cannot lock hardware for suspend\n",
  32                        dev->name);
  33                 return err;
  34         }
  35
  36         err = __orinoco_down(dev);
  37         if (err)
  38                 printk(KERN_WARNING "%s: error %d bringing interface down "
  39                        "for suspend\n", dev->name, err);
  40
  41         netif_device_detach(dev);
  42
  43         priv->hw_unavailable++;
  44
  45         orinoco_unlock(priv, &flags);
  46
  47         free_irq(pdev->irq, dev);
  48         pci_save_state(pdev);
  49         pci_disable_device(pdev);
  50         pci_set_power_state(pdev, PCI_D3hot);
  51
  52         return 0;
  53 }
  54
  55 static int orinoco_pci_resume(struct pci_dev *pdev)
  56 {
  57         struct net_device *dev = pci_get_drvdata(pdev);
  58         struct orinoco_private *priv = netdev_priv(dev);
  59         unsigned long flags;
  60         int err;
  61
  62         pci_set_power_state(pdev, 0);
  63         pci_enable_device(pdev);
  64         pci_restore_state(pdev);
  65
  66         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
  67                           dev->name, dev);
  68         if (err) {
  69                 printk(KERN_ERR "%s: cannot re-allocate IRQ on resume\n",
  70                        dev->name);
  71                 pci_disable_device(pdev);
  72                 return -EBUSY;
  73         }
  74
  75         err = orinoco_reinit_firmware(dev);
  76         if (err) {
  77                 printk(KERN_ERR "%s: error %d re-initializing firmware "
  78                        "on resume\n", dev->name, err);
  79                 return err;
  80         }
  81
  82         spin_lock_irqsave(&priv->lock, flags);
  83
  84         netif_device_attach(dev);
  85
  86         priv->hw_unavailable--;
  87
  88         if (priv->open && (! priv->hw_unavailable)) {
  89                 err = __orinoco_up(dev);
  90                 if (err)
  91                         printk(KERN_ERR "%s: Error %d restarting card on resume\n",
  92                                dev->name, err);
  93         }
  94
  95         spin_unlock_irqrestore(&priv->lock, flags);
  96
  97         return 0;
  98 }
  99 #else
 100 #define orinoco_pci_suspend NULL
 101 #define orinoco_pci_resume NULL
 102 #endif
 103
 104 #endif /* _ORINOCO_PCI_H */