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         err = pci_enable_device(pdev);
  64         if (err) {
  65                 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
  66                        dev->name);
  67                 return err;
  68         }
  69         pci_restore_state(pdev);
  70
  71         err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
  72                           dev->name, dev);
  73         if (err) {
  74                 printk(KERN_ERR "%s: cannot re-allocate IRQ on resume\n",
  75                        dev->name);
  76                 pci_disable_device(pdev);
  77                 return -EBUSY;
  78         }
  79
  80         err = orinoco_reinit_firmware(dev);
  81         if (err) {
  82                 printk(KERN_ERR "%s: error %d re-initializing firmware "
  83                        "on resume\n", dev->name, err);
  84                 return err;
  85         }
  86
  87         spin_lock_irqsave(&priv->lock, flags);
  88
  89         netif_device_attach(dev);
  90
  91         priv->hw_unavailable--;
  92
  93         if (priv->open && (! priv->hw_unavailable)) {
  94                 err = __orinoco_up(dev);
  95                 if (err)
  96                         printk(KERN_ERR "%s: Error %d restarting card on resume\n",
  97                                dev->name, err);
  98         }
  99
 100         spin_unlock_irqrestore(&priv->lock, flags);
 101
 102         return 0;
 103 }
 104 #else
 105 #define orinoco_pci_suspend NULL
 106 #define orinoco_pci_resume NULL
 107 #endif
 108
 109 #endif /* _ORINOCO_PCI_H */