drivers/net/wireless/hostap/hostap_pci.c - fp2-dev/kernel/msm - Gitiles

 #define PRISM2_PCI

 /* Host AP driver's support for Intersil Prism2.5 PCI cards is based on
  * driver patches from Reyk Floeter <reyk@vantronix.net> and
  * Andy Warner <andyw@pobox.com> */

 #include <linux/config.h>
 #include <linux/version.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/if.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
 #include <linux/workqueue.h>
 #include <linux/wireless.h>
 #include <net/iw_handler.h>

 #include <linux/ioport.h>
 #include <linux/pci.h>
 #include <asm/io.h>

 #include "hostap_wlan.h"


 static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
 static char *dev_info = "hostap_pci";


 MODULE_AUTHOR("Jouni Malinen");
 MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
 		   "PCI cards.");
 MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(PRISM2_VERSION);


 /* struct local_info::hw_priv */
 struct hostap_pci_priv {
 	void __iomem *mem_start;
 };


 /* FIX: do we need mb/wmb/rmb with memory operations? */


 static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
 	/* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
 	{ 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
 	/* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
 	{ 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
 	/* Samsung MagicLAN SWL-2210P */
 	{ 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
 	{ 0 }
 };


 #ifdef PRISM2_IO_DEBUG

 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	local_info_t *local;
 	unsigned long flags;

 	iface = netdev_priv(dev);
 	local = iface->local;
 	hw_priv = local->hw_priv;

 	spin_lock_irqsave(&local->lock, flags);
 	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
 	writeb(v, hw_priv->mem_start + a);
 	spin_unlock_irqrestore(&local->lock, flags);
 }

 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	local_info_t *local;
 	unsigned long flags;
 	u8 v;

 	iface = netdev_priv(dev);
 	local = iface->local;
 	hw_priv = local->hw_priv;

 	spin_lock_irqsave(&local->lock, flags);
 	v = readb(hw_priv->mem_start + a);
 	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
 	spin_unlock_irqrestore(&local->lock, flags);
 	return v;
 }

 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	local_info_t *local;
 	unsigned long flags;

 	iface = netdev_priv(dev);
 	local = iface->local;
 	hw_priv = local->hw_priv;

 	spin_lock_irqsave(&local->lock, flags);
 	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
 	writew(v, hw_priv->mem_start + a);
 	spin_unlock_irqrestore(&local->lock, flags);
 }

 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	local_info_t *local;
 	unsigned long flags;
 	u16 v;

 	iface = netdev_priv(dev);
 	local = iface->local;
 	hw_priv = local->hw_priv;

 	spin_lock_irqsave(&local->lock, flags);
 	v = readw(hw_priv->mem_start + a);
 	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
 	spin_unlock_irqrestore(&local->lock, flags);
 	return v;
 }

 #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
 #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
 #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
 #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
 #define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v)))
 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))

 #else /* PRISM2_IO_DEBUG */

 static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	iface = netdev_priv(dev);
 	hw_priv = iface->local->hw_priv;
 	writeb(v, hw_priv->mem_start + a);
 }

 static inline u8 hfa384x_inb(struct net_device *dev, int a)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	iface = netdev_priv(dev);
 	hw_priv = iface->local->hw_priv;
 	return readb(hw_priv->mem_start + a);
 }

 static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	iface = netdev_priv(dev);
 	hw_priv = iface->local->hw_priv;
 	writew(v, hw_priv->mem_start + a);
 }

 static inline u16 hfa384x_inw(struct net_device *dev, int a)
 {
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;
 	iface = netdev_priv(dev);
 	hw_priv = iface->local->hw_priv;
 	return readw(hw_priv->mem_start + a);
 }

 #define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
 #define HFA384X_INB(a) hfa384x_inb(dev, (a))
 #define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
 #define HFA384X_INW(a) hfa384x_inw(dev, (a))
 #define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v)))
 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))

 #endif /* PRISM2_IO_DEBUG */


 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
 			    int len)
 {
 	u16 d_off;
 	u16 *pos;

 	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
 	pos = (u16 *) buf;

 	for ( ; len > 1; len -= 2)
 		*pos++ = HFA384X_INW_DATA(d_off);

 	if (len & 1)
 		*((char *) pos) = HFA384X_INB(d_off);

 	return 0;
 }


 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
 {
 	u16 d_off;
 	u16 *pos;

 	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
 	pos = (u16 *) buf;

 	for ( ; len > 1; len -= 2)
 		HFA384X_OUTW_DATA(*pos++, d_off);

 	if (len & 1)
 		HFA384X_OUTB(*((char *) pos), d_off);

 	return 0;
 }


 /* FIX: This might change at some point.. */
 #include "hostap_hw.c"

 static void prism2_pci_cor_sreset(local_info_t *local)
 {
 	struct net_device *dev = local->dev;
 	u16 reg;

 	reg = HFA384X_INB(HFA384X_PCICOR_OFF);
 	printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);

 	/* linux-wlan-ng uses extremely long hold and settle times for
 	 * COR sreset. A comment in the driver code mentions that the long
 	 * delays appear to be necessary. However, at least IBM 22P6901 seems
 	 * to work fine with shorter delays.
 	 *
 	 * Longer delays can be configured by uncommenting following line: */
 /* #define PRISM2_PCI_USE_LONG_DELAYS */

 #ifdef PRISM2_PCI_USE_LONG_DELAYS
 	int i;

 	HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
 	mdelay(250);

 	HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
 	mdelay(500);

 	/* Wait for f/w to complete initialization (CMD:BUSY == 0) */
 	i = 2000000 / 10;
 	while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
 		udelay(10);

 #else /* PRISM2_PCI_USE_LONG_DELAYS */

 	HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
 	mdelay(2);
 	HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
 	mdelay(2);

 #endif /* PRISM2_PCI_USE_LONG_DELAYS */

 	if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
 		printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
 	}
 }


 static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
 {
 	struct net_device *dev = local->dev;

 	HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
 	mdelay(10);
 	HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
 	mdelay(10);
 	HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
 	mdelay(10);
 }


 static struct prism2_helper_functions prism2_pci_funcs =
 {
 	.card_present	= NULL,
 	.cor_sreset	= prism2_pci_cor_sreset,
 	.genesis_reset	= prism2_pci_genesis_reset,
 	.hw_type	= HOSTAP_HW_PCI,
 };


 static int prism2_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *id)
 {
 	unsigned long phymem;
 	void __iomem *mem = NULL;
 	local_info_t *local = NULL;
 	struct net_device *dev = NULL;
 	static int cards_found /* = 0 */;
 	int irq_registered = 0;
 	struct hostap_interface *iface;
 	struct hostap_pci_priv *hw_priv;

 	hw_priv = kmalloc(sizeof(*hw_priv), GFP_KERNEL);
 	if (hw_priv == NULL)
 		return -ENOMEM;
 	memset(hw_priv, 0, sizeof(*hw_priv));

 	if (pci_enable_device(pdev))
 		return -EIO;

 	phymem = pci_resource_start(pdev, 0);

 	if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
 		printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
 		goto err_out_disable;
 	}

 	mem = ioremap(phymem, pci_resource_len(pdev, 0));
 	if (mem == NULL) {
 		printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
 		goto fail;
 	}

 	dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
 				     &pdev->dev);
 	if (dev == NULL)
 		goto fail;
 	iface = netdev_priv(dev);
 	local = iface->local;
 	local->hw_priv = hw_priv;
 	cards_found++;

         dev->irq = pdev->irq;
         hw_priv->mem_start = mem;

 	prism2_pci_cor_sreset(local);

 	pci_set_drvdata(pdev, dev);

 	if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
 			dev)) {
 		printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
 		goto fail;
 	} else
 		irq_registered = 1;

 	if (!local->pri_only && prism2_hw_config(dev, 1)) {
 		printk(KERN_DEBUG "%s: hardware initialization failed\n",
 		       dev_info);
 		goto fail;
 	}

 	printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
 	       "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);

 	return hostap_hw_ready(dev);

  fail:
 	if (irq_registered && dev)
 		free_irq(dev->irq, dev);

 	if (mem)
 		iounmap(mem);

 	release_mem_region(phymem, pci_resource_len(pdev, 0));

  err_out_disable:
 	pci_disable_device(pdev);
 	prism2_free_local_data(dev);
 	kfree(hw_priv);

 	return -ENODEV;
 }


 static void prism2_pci_remove(struct pci_dev *pdev)
 {
 	struct net_device *dev;
 	struct hostap_interface *iface;
 	void __iomem *mem_start;
 	struct hostap_pci_priv *hw_priv;

 	dev = pci_get_drvdata(pdev);
 	iface = netdev_priv(dev);
 	hw_priv = iface->local->hw_priv;

 	/* Reset the hardware, and ensure interrupts are disabled. */
 	prism2_pci_cor_sreset(iface->local);
 	hfa384x_disable_interrupts(dev);

 	if (dev->irq)
 		free_irq(dev->irq, dev);

 	mem_start = hw_priv->mem_start;
 	prism2_free_local_data(dev);
 	kfree(hw_priv);

 	iounmap(mem_start);

 	release_mem_region(pci_resource_start(pdev, 0),
 			   pci_resource_len(pdev, 0));
 	pci_disable_device(pdev);
 }


 #ifdef CONFIG_PM
 static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 {
 	struct net_device *dev = pci_get_drvdata(pdev);

 	if (netif_running(dev)) {
 		netif_stop_queue(dev);
 		netif_device_detach(dev);
 	}
 	prism2_suspend(dev);
 	pci_save_state(pdev);
 	pci_disable_device(pdev);
 	pci_set_power_state(pdev, PCI_D3hot);

 	return 0;
 }

 static int prism2_pci_resume(struct pci_dev *pdev)
 {
 	struct net_device *dev = pci_get_drvdata(pdev);

 	pci_enable_device(pdev);
 	pci_restore_state(pdev);
 	prism2_hw_config(dev, 0);
 	if (netif_running(dev)) {
 		netif_device_attach(dev);
 		netif_start_queue(dev);
 	}

 	return 0;
 }
 #endif /* CONFIG_PM */


 MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);

 static struct pci_driver prism2_pci_drv_id = {
 	.name		= "hostap_pci",
 	.id_table	= prism2_pci_id_table,
 	.probe		= prism2_pci_probe,
 	.remove		= prism2_pci_remove,
 #ifdef CONFIG_PM
 	.suspend	= prism2_pci_suspend,
 	.resume		= prism2_pci_resume,
 #endif /* CONFIG_PM */
 	/* Linux 2.4.6 added save_state and enable_wake that are not used here
 	 */
 };


 static int __init init_prism2_pci(void)
 {
 	printk(KERN_INFO "%s: %s\n", dev_info, version);

 	return pci_register_driver(&prism2_pci_drv_id);
 }


 static void __exit exit_prism2_pci(void)
 {
 	pci_unregister_driver(&prism2_pci_drv_id);
 	printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
 }


 module_init(init_prism2_pci);
 module_exit(exit_prism2_pci);
	#define PRISM2_PCI

	/* Host AP driver's support for Intersil Prism2.5 PCI cards is based on
	* driver patches from Reyk Floeter <reyk@vantronix.net> and
	* Andy Warner <andyw@pobox.com> */

	#include <linux/config.h>
	#include <linux/version.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/if.h>
	#include <linux/skbuff.h>
	#include <linux/netdevice.h>
	#include <linux/workqueue.h>
	#include <linux/wireless.h>
	#include <net/iw_handler.h>

	#include <linux/ioport.h>
	#include <linux/pci.h>
	#include <asm/io.h>

	#include "hostap_wlan.h"


	static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
	static char *dev_info = "hostap_pci";


	MODULE_AUTHOR("Jouni Malinen");
	MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
	"PCI cards.");
	MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
	MODULE_LICENSE("GPL");
	MODULE_VERSION(PRISM2_VERSION);


	/* struct local_info::hw_priv */
	struct hostap_pci_priv {
	void __iomem *mem_start;
	};


	/* FIX: do we need mb/wmb/rmb with memory operations? */


	static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
	/* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
	{ 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
	/* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
	{ 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
	/* Samsung MagicLAN SWL-2210P */
	{ 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
	{ 0 }
	};


	#ifdef PRISM2_IO_DEBUG

	static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	local_info_t *local;
	unsigned long flags;

	iface = netdev_priv(dev);
	local = iface->local;
	hw_priv = local->hw_priv;

	spin_lock_irqsave(&local->lock, flags);
	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
	writeb(v, hw_priv->mem_start + a);
	spin_unlock_irqrestore(&local->lock, flags);
	}

	static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	local_info_t *local;
	unsigned long flags;
	u8 v;

	iface = netdev_priv(dev);
	local = iface->local;
	hw_priv = local->hw_priv;

	spin_lock_irqsave(&local->lock, flags);
	v = readb(hw_priv->mem_start + a);
	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
	spin_unlock_irqrestore(&local->lock, flags);
	return v;
	}

	static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	local_info_t *local;
	unsigned long flags;

	iface = netdev_priv(dev);
	local = iface->local;
	hw_priv = local->hw_priv;

	spin_lock_irqsave(&local->lock, flags);
	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
	writew(v, hw_priv->mem_start + a);
	spin_unlock_irqrestore(&local->lock, flags);
	}

	static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	local_info_t *local;
	unsigned long flags;
	u16 v;

	iface = netdev_priv(dev);
	local = iface->local;
	hw_priv = local->hw_priv;

	spin_lock_irqsave(&local->lock, flags);
	v = readw(hw_priv->mem_start + a);
	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
	spin_unlock_irqrestore(&local->lock, flags);
	return v;
	}

	#define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
	#define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
	#define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
	#define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
	#define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v)))
	#define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))

	#else /* PRISM2_IO_DEBUG */

	static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	iface = netdev_priv(dev);
	hw_priv = iface->local->hw_priv;
	writeb(v, hw_priv->mem_start + a);
	}

	static inline u8 hfa384x_inb(struct net_device *dev, int a)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	iface = netdev_priv(dev);
	hw_priv = iface->local->hw_priv;
	return readb(hw_priv->mem_start + a);
	}

	static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	iface = netdev_priv(dev);
	hw_priv = iface->local->hw_priv;
	writew(v, hw_priv->mem_start + a);
	}

	static inline u16 hfa384x_inw(struct net_device *dev, int a)
	{
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;
	iface = netdev_priv(dev);
	hw_priv = iface->local->hw_priv;
	return readw(hw_priv->mem_start + a);
	}

	#define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
	#define HFA384X_INB(a) hfa384x_inb(dev, (a))
	#define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
	#define HFA384X_INW(a) hfa384x_inw(dev, (a))
	#define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v)))
	#define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))

	#endif /* PRISM2_IO_DEBUG */


	static int hfa384x_from_bap(struct net_device dev, u16 bap, void buf,
	int len)
	{
	u16 d_off;
	u16 *pos;

	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
	pos = (u16 *) buf;

	for ( ; len > 1; len -= 2)
	*pos++ = HFA384X_INW_DATA(d_off);

	if (len & 1)
	((char ) pos) = HFA384X_INB(d_off);

	return 0;
	}


	static int hfa384x_to_bap(struct net_device dev, u16 bap, void buf, int len)
	{
	u16 d_off;
	u16 *pos;

	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
	pos = (u16 *) buf;

	for ( ; len > 1; len -= 2)
	HFA384X_OUTW_DATA(*pos++, d_off);

	if (len & 1)
	HFA384X_OUTB(((char ) pos), d_off);

	return 0;
	}


	/* FIX: This might change at some point.. */
	#include "hostap_hw.c"

	static void prism2_pci_cor_sreset(local_info_t *local)
	{
	struct net_device *dev = local->dev;
	u16 reg;

	reg = HFA384X_INB(HFA384X_PCICOR_OFF);
	printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);

	/* linux-wlan-ng uses extremely long hold and settle times for
	* COR sreset. A comment in the driver code mentions that the long
	* delays appear to be necessary. However, at least IBM 22P6901 seems
	* to work fine with shorter delays.
	*
	* Longer delays can be configured by uncommenting following line: */
	/* #define PRISM2_PCI_USE_LONG_DELAYS */

	#ifdef PRISM2_PCI_USE_LONG_DELAYS
	int i;

	HFA384X_OUTW(reg \| 0x0080, HFA384X_PCICOR_OFF);
	mdelay(250);

	HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
	mdelay(500);

	/* Wait for f/w to complete initialization (CMD:BUSY == 0) */
	i = 2000000 / 10;
	while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
	udelay(10);

	#else /* PRISM2_PCI_USE_LONG_DELAYS */

	HFA384X_OUTW(reg \| 0x0080, HFA384X_PCICOR_OFF);
	mdelay(2);
	HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
	mdelay(2);

	#endif /* PRISM2_PCI_USE_LONG_DELAYS */

	if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
	printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
	}
	}


	static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
	{
	struct net_device *dev = local->dev;

	HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
	mdelay(10);
	HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
	mdelay(10);
	HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
	mdelay(10);
	}


	static struct prism2_helper_functions prism2_pci_funcs =
	{
	.card_present = NULL,
	.cor_sreset = prism2_pci_cor_sreset,
	.genesis_reset = prism2_pci_genesis_reset,
	.hw_type = HOSTAP_HW_PCI,
	};


	static int prism2_pci_probe(struct pci_dev *pdev,
	const struct pci_device_id *id)
	{
	unsigned long phymem;
	void __iomem *mem = NULL;
	local_info_t *local = NULL;
	struct net_device *dev = NULL;
	static int cards_found /* = 0 */;
	int irq_registered = 0;
	struct hostap_interface *iface;
	struct hostap_pci_priv *hw_priv;

	hw_priv = kmalloc(sizeof(*hw_priv), GFP_KERNEL);
	if (hw_priv == NULL)
	return -ENOMEM;
	memset(hw_priv, 0, sizeof(*hw_priv));

	if (pci_enable_device(pdev))
	return -EIO;

	phymem = pci_resource_start(pdev, 0);

	if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
	printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
	goto err_out_disable;
	}

	mem = ioremap(phymem, pci_resource_len(pdev, 0));
	if (mem == NULL) {
	printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
	goto fail;
	}

	dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
	&pdev->dev);
	if (dev == NULL)
	goto fail;
	iface = netdev_priv(dev);
	local = iface->local;
	local->hw_priv = hw_priv;
	cards_found++;

	dev->irq = pdev->irq;
	hw_priv->mem_start = mem;

	prism2_pci_cor_sreset(local);

	pci_set_drvdata(pdev, dev);

	if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
	dev)) {
	printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
	goto fail;
	} else
	irq_registered = 1;

	if (!local->pri_only && prism2_hw_config(dev, 1)) {
	printk(KERN_DEBUG "%s: hardware initialization failed\n",
	dev_info);
	goto fail;
	}

	printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
	"mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);

	return hostap_hw_ready(dev);

	fail:
	if (irq_registered && dev)
	free_irq(dev->irq, dev);

	if (mem)
	iounmap(mem);

	release_mem_region(phymem, pci_resource_len(pdev, 0));

	err_out_disable:
	pci_disable_device(pdev);
	prism2_free_local_data(dev);
	kfree(hw_priv);

	return -ENODEV;
	}


	static void prism2_pci_remove(struct pci_dev *pdev)
	{
	struct net_device *dev;
	struct hostap_interface *iface;
	void __iomem *mem_start;
	struct hostap_pci_priv *hw_priv;

	dev = pci_get_drvdata(pdev);
	iface = netdev_priv(dev);
	hw_priv = iface->local->hw_priv;

	/* Reset the hardware, and ensure interrupts are disabled. */
	prism2_pci_cor_sreset(iface->local);
	hfa384x_disable_interrupts(dev);

	if (dev->irq)
	free_irq(dev->irq, dev);

	mem_start = hw_priv->mem_start;
	prism2_free_local_data(dev);
	kfree(hw_priv);

	iounmap(mem_start);

	release_mem_region(pci_resource_start(pdev, 0),
	pci_resource_len(pdev, 0));
	pci_disable_device(pdev);
	}


	#ifdef CONFIG_PM
	static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
	{
	struct net_device *dev = pci_get_drvdata(pdev);

	if (netif_running(dev)) {
	netif_stop_queue(dev);
	netif_device_detach(dev);
	}
	prism2_suspend(dev);
	pci_save_state(pdev);
	pci_disable_device(pdev);
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
	}

	static int prism2_pci_resume(struct pci_dev *pdev)
	{
	struct net_device *dev = pci_get_drvdata(pdev);

	pci_enable_device(pdev);
	pci_restore_state(pdev);
	prism2_hw_config(dev, 0);
	if (netif_running(dev)) {
	netif_device_attach(dev);
	netif_start_queue(dev);
	}

	return 0;
	}
	#endif /* CONFIG_PM */


	MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);

	static struct pci_driver prism2_pci_drv_id = {
	.name = "hostap_pci",
	.id_table = prism2_pci_id_table,
	.probe = prism2_pci_probe,
	.remove = prism2_pci_remove,
	#ifdef CONFIG_PM
	.suspend = prism2_pci_suspend,
	.resume = prism2_pci_resume,
	#endif /* CONFIG_PM */
	/* Linux 2.4.6 added save_state and enable_wake that are not used here
	*/
	};


	static int __init init_prism2_pci(void)
	{
	printk(KERN_INFO "%s: %s\n", dev_info, version);

	return pci_register_driver(&prism2_pci_drv_id);
	}


	static void __exit exit_prism2_pci(void)
	{
	pci_unregister_driver(&prism2_pci_drv_id);
	printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
	}


	module_init(init_prism2_pci);
	module_exit(exit_prism2_pci);