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 /* Set base address or memory range of the network device based on
  22  * the PCI device it's using.  Specify BAR of the "main" resource.
  23  * To be used after request_irq().  */
  24 static inline void orinoco_pci_setup_netdev(struct net_device *dev,
  25                                             struct pci_dev *pdev, int bar)
  26 {
  27         char *range_type;
  28         unsigned long start = pci_resource_start(pdev, bar);
  29         unsigned long len = pci_resource_len(pdev, bar);
  30         unsigned long flags = pci_resource_flags(pdev, bar);
  31         unsigned long end = start + len - 1;
  32
  33         dev->irq = pdev->irq;
  34         if (flags & IORESOURCE_IO) {
  35                 dev->base_addr = start;
  36                 range_type = "ports";
  37         } else {
  38                 dev->mem_start = start;
  39                 dev->mem_end = end;
  40                 range_type = "memory";
  41         }
  42
  43         printk(KERN_DEBUG PFX "%s: irq %d, %s 0x%lx-0x%lx\n",
  44                pci_name(pdev), pdev->irq, range_type, start, end);
  45 }
  46
  47 static int orinoco_pci_suspend(struct pci_dev *pdev, pm_message_t state)
  48 {
  49         struct net_device *dev = pci_get_drvdata(pdev);
  50         struct orinoco_private *priv = netdev_priv(dev);
  51         unsigned long flags;
  52         int err;
  53
  54         err = orinoco_lock(priv, &flags);
  55         if (err) {
  56                 printk(KERN_ERR "%s: cannot lock hardware for suspend\n",
  57                        dev->name);
  58                 return err;
  59         }
  60
  61         err = __orinoco_down(dev);
  62         if (err)
  63                 printk(KERN_WARNING "%s: error %d bringing interface down "
  64                        "for suspend\n", dev->name, err);
  65
  66         netif_device_detach(dev);
  67
  68         priv->hw_unavailable++;
  69
  70         orinoco_unlock(priv, &flags);
  71
  72         free_irq(pdev->irq, dev);
  73         pci_save_state(pdev);
  74         pci_disable_device(pdev);
  75         pci_set_power_state(pdev, PCI_D3hot);
  76
  77         return 0;
  78 }
  79
  80 static int orinoco_pci_resume(struct pci_dev *pdev)
  81 {
  82         struct net_device *dev = pci_get_drvdata(pdev);
  83         struct orinoco_private *priv = netdev_priv(dev);
  84         unsigned long flags;
  85         int err;
  86
  87         pci_set_power_state(pdev, 0);
  88         pci_enable_device(pdev);
  89         pci_restore_state(pdev);
  90
  91         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
  92                           dev->name, dev);
  93         if (err) {
  94                 printk(KERN_ERR "%s: cannot re-allocate IRQ on resume\n",
  95                        dev->name);
  96                 pci_disable_device(pdev);
  97                 return -EBUSY;
  98         }
  99
 100         err = orinoco_reinit_firmware(dev);
 101         if (err) {
 102                 printk(KERN_ERR "%s: error %d re-initializing firmware "
 103                        "on resume\n", dev->name, err);
 104                 return err;
 105         }
 106
 107         spin_lock_irqsave(&priv->lock, flags);
 108
 109         netif_device_attach(dev);
 110
 111         priv->hw_unavailable--;
 112
 113         if (priv->open && (! priv->hw_unavailable)) {
 114                 err = __orinoco_up(dev);
 115                 if (err)
 116                         printk(KERN_ERR "%s: Error %d restarting card on resume\n",
 117                                dev->name, err);
 118         }
 119
 120         spin_unlock_irqrestore(&priv->lock, flags);
 121
 122         return 0;
 123 }
 124
 125 #endif /* _ORINOCO_PCI_H */