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 #ifdef CONFIG_PM
  48 static int orinoco_pci_suspend(struct pci_dev *pdev, pm_message_t state)
  49 {
  50         struct net_device *dev = pci_get_drvdata(pdev);
  51         struct orinoco_private *priv = netdev_priv(dev);
  52         unsigned long flags;
  53         int err;
  54
  55         err = orinoco_lock(priv, &flags);
  56         if (err) {
  57                 printk(KERN_ERR "%s: cannot lock hardware for suspend\n",
  58                        dev->name);
  59                 return err;
  60         }
  61
  62         err = __orinoco_down(dev);
  63         if (err)
  64                 printk(KERN_WARNING "%s: error %d bringing interface down "
  65                        "for suspend\n", dev->name, err);
  66
  67         netif_device_detach(dev);
  68
  69         priv->hw_unavailable++;
  70
  71         orinoco_unlock(priv, &flags);
  72
  73         free_irq(pdev->irq, dev);
  74         pci_save_state(pdev);
  75         pci_disable_device(pdev);
  76         pci_set_power_state(pdev, PCI_D3hot);
  77
  78         return 0;
  79 }
  80
  81 static int orinoco_pci_resume(struct pci_dev *pdev)
  82 {
  83         struct net_device *dev = pci_get_drvdata(pdev);
  84         struct orinoco_private *priv = netdev_priv(dev);
  85         unsigned long flags;
  86         int err;
  87
  88         pci_set_power_state(pdev, 0);
  89         pci_enable_device(pdev);
  90         pci_restore_state(pdev);
  91
  92         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
  93                           dev->name, dev);
  94         if (err) {
  95                 printk(KERN_ERR "%s: cannot re-allocate IRQ on resume\n",
  96                        dev->name);
  97                 pci_disable_device(pdev);
  98                 return -EBUSY;
  99         }
 100
 101         err = orinoco_reinit_firmware(dev);
 102         if (err) {
 103                 printk(KERN_ERR "%s: error %d re-initializing firmware "
 104                        "on resume\n", dev->name, err);
 105                 return err;
 106         }
 107
 108         spin_lock_irqsave(&priv->lock, flags);
 109
 110         netif_device_attach(dev);
 111
 112         priv->hw_unavailable--;
 113
 114         if (priv->open && (! priv->hw_unavailable)) {
 115                 err = __orinoco_up(dev);
 116                 if (err)
 117                         printk(KERN_ERR "%s: Error %d restarting card on resume\n",
 118                                dev->name, err);
 119         }
 120
 121         spin_unlock_irqrestore(&priv->lock, flags);
 122
 123         return 0;
 124 }
 125 #else
 126 #define orinoco_pci_suspend NULL
 127 #define orinoco_pci_resume NULL
 128 #endif
 129
 130 #endif /* _ORINOCO_PCI_H */