[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / drivers / net / wireless / hostap / hostap_pci.c

#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/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))
		goto err_out_free;

	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, IRQF_SHARED, 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);

 err_out_free:
	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);
Commit	Line	Data
ff1d2767 JM	1	#define PRISM2_PCI
	2
	3	/* Host AP driver's support for Intersil Prism2.5 PCI cards is based on
	4	* driver patches from Reyk Floeter <reyk@vantronix.net> and
	5	* Andy Warner <andyw@pobox.com> */
	6
ff1d2767 JM	7	#include <linux/module.h>
	8	#include <linux/init.h>
	9	#include <linux/if.h>
	10	#include <linux/skbuff.h>
	11	#include <linux/netdevice.h>
	12	#include <linux/workqueue.h>
	13	#include <linux/wireless.h>
	14	#include <net/iw_handler.h>
	15
	16	#include <linux/ioport.h>
	17	#include <linux/pci.h>
	18	#include <asm/io.h>
	19
	20	#include "hostap_wlan.h"
	21
	22
	23	static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
	24	static char *dev_info = "hostap_pci";
	25
	26
	27	MODULE_AUTHOR("Jouni Malinen");
	28	MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
	29	"PCI cards.");
	30	MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
	31	MODULE_LICENSE("GPL");
f06ac319	32	MODULE_VERSION(PRISM2_VERSION);
ff1d2767 JM	33
ff1d2767 JM	34
67e0e473 JM	35	/* struct local_info::hw_priv */
	36	struct hostap_pci_priv {
	37	void __iomem *mem_start;
	38	};
	39
	40
ff1d2767 JM	41	/* FIX: do we need mb/wmb/rmb with memory operations? */
	42
	43
	44	static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
	45	/* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
	46	{ 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
	47	/* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
	48	{ 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
	49	/* Samsung MagicLAN SWL-2210P */
	50	{ 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
	51	{ 0 }
	52	};
	53
	54
	55	#ifdef PRISM2_IO_DEBUG
	56
	57	static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
	58	{
	59	struct hostap_interface *iface;
f7a74447	60	struct hostap_pci_priv *hw_priv;
ff1d2767 JM	61	local_info_t *local;
	62	unsigned long flags;
	63
	64	iface = netdev_priv(dev);
	65	local = iface->local;
f7a74447	66	hw_priv = local->hw_priv;
ff1d2767 JM	67
	68	spin_lock_irqsave(&local->lock, flags);
	69	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
67e0e473	70	writeb(v, hw_priv->mem_start + a);
ff1d2767 JM	71	spin_unlock_irqrestore(&local->lock, flags);
	72	}
	73
	74	static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
	75	{
	76	struct hostap_interface *iface;
f7a74447	77	struct hostap_pci_priv *hw_priv;
ff1d2767 JM	78	local_info_t *local;
	79	unsigned long flags;
	80	u8 v;
	81
	82	iface = netdev_priv(dev);
	83	local = iface->local;
f7a74447	84	hw_priv = local->hw_priv;
ff1d2767 JM	85
ff1d2767 JM	86	spin_lock_irqsave(&local->lock, flags);
67e0e473	87	v = readb(hw_priv->mem_start + a);
ff1d2767 JM	88	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
	89	spin_unlock_irqrestore(&local->lock, flags);
	90	return v;
	91	}
	92
	93	static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
	94	{
	95	struct hostap_interface *iface;
f7a74447	96	struct hostap_pci_priv *hw_priv;
ff1d2767 JM	97	local_info_t *local;
	98	unsigned long flags;
	99
	100	iface = netdev_priv(dev);
	101	local = iface->local;
f7a74447	102	hw_priv = local->hw_priv;
ff1d2767 JM	103
	104	spin_lock_irqsave(&local->lock, flags);
	105	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
67e0e473	106	writew(v, hw_priv->mem_start + a);
ff1d2767 JM	107	spin_unlock_irqrestore(&local->lock, flags);
	108	}
	109
	110	static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
	111	{
	112	struct hostap_interface *iface;
f7a74447	113	struct hostap_pci_priv *hw_priv;
ff1d2767 JM	114	local_info_t *local;
	115	unsigned long flags;
	116	u16 v;
	117
	118	iface = netdev_priv(dev);
	119	local = iface->local;
f7a74447	120	hw_priv = local->hw_priv;
ff1d2767 JM	121
ff1d2767 JM	122	spin_lock_irqsave(&local->lock, flags);
67e0e473	123	v = readw(hw_priv->mem_start + a);
ff1d2767 JM	124	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
	125	spin_unlock_irqrestore(&local->lock, flags);
	126	return v;
	127	}
	128
	129	#define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
	130	#define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
	131	#define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
	132	#define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
	133	#define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v)))
	134	#define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))
	135
	136	#else /* PRISM2_IO_DEBUG */
	137
	138	static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
	139	{
	140	struct hostap_interface *iface;
67e0e473	141	struct hostap_pci_priv *hw_priv;
ff1d2767	142	iface = netdev_priv(dev);
67e0e473 JM	143	hw_priv = iface->local->hw_priv;
67e0e473 JM	144	writeb(v, hw_priv->mem_start + a);
ff1d2767 JM	145	}
	146
	147	static inline u8 hfa384x_inb(struct net_device *dev, int a)
	148	{
	149	struct hostap_interface *iface;
67e0e473	150	struct hostap_pci_priv *hw_priv;
ff1d2767	151	iface = netdev_priv(dev);
67e0e473 JM	152	hw_priv = iface->local->hw_priv;
67e0e473 JM	153	return readb(hw_priv->mem_start + a);
ff1d2767 JM	154	}
	155
	156	static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
	157	{
	158	struct hostap_interface *iface;
67e0e473	159	struct hostap_pci_priv *hw_priv;
ff1d2767	160	iface = netdev_priv(dev);
67e0e473 JM	161	hw_priv = iface->local->hw_priv;
67e0e473 JM	162	writew(v, hw_priv->mem_start + a);
ff1d2767 JM	163	}
	164
	165	static inline u16 hfa384x_inw(struct net_device *dev, int a)
	166	{
	167	struct hostap_interface *iface;
67e0e473	168	struct hostap_pci_priv *hw_priv;
ff1d2767	169	iface = netdev_priv(dev);
67e0e473 JM	170	hw_priv = iface->local->hw_priv;
67e0e473 JM	171	return readw(hw_priv->mem_start + a);
ff1d2767 JM	172	}
	173
	174	#define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
	175	#define HFA384X_INB(a) hfa384x_inb(dev, (a))
	176	#define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
	177	#define HFA384X_INW(a) hfa384x_inw(dev, (a))
	178	#define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v)))
	179	#define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))
	180
	181	#endif /* PRISM2_IO_DEBUG */
	182
	183
	184	static int hfa384x_from_bap(struct net_device dev, u16 bap, void buf,
	185	int len)
	186	{
	187	u16 d_off;
	188	u16 *pos;
	189
	190	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
	191	pos = (u16 *) buf;
	192
	193	for ( ; len > 1; len -= 2)
	194	*pos++ = HFA384X_INW_DATA(d_off);
	195
	196	if (len & 1)
	197	((char ) pos) = HFA384X_INB(d_off);
	198
	199	return 0;
	200	}
	201
	202
	203	static int hfa384x_to_bap(struct net_device dev, u16 bap, void buf, int len)
	204	{
	205	u16 d_off;
	206	u16 *pos;
	207
	208	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
	209	pos = (u16 *) buf;
	210
	211	for ( ; len > 1; len -= 2)
	212	HFA384X_OUTW_DATA(*pos++, d_off);
	213
	214	if (len & 1)
	215	HFA384X_OUTB(((char ) pos), d_off);
	216
	217	return 0;
	218	}
	219
	220
	221	/* FIX: This might change at some point.. */
	222	#include "hostap_hw.c"
	223
	224	static void prism2_pci_cor_sreset(local_info_t *local)
	225	{
	226	struct net_device *dev = local->dev;
	227	u16 reg;
	228
	229	reg = HFA384X_INB(HFA384X_PCICOR_OFF);
	230	printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
	231
	232	/* linux-wlan-ng uses extremely long hold and settle times for
	233	* COR sreset. A comment in the driver code mentions that the long
	234	* delays appear to be necessary. However, at least IBM 22P6901 seems
	235	* to work fine with shorter delays.
236	*
237	* Longer delays can be configured by uncommenting following line: */
238	/* #define PRISM2_PCI_USE_LONG_DELAYS */
239
240	#ifdef PRISM2_PCI_USE_LONG_DELAYS
241	int i;
242
243	HFA384X_OUTW(reg \| 0x0080, HFA384X_PCICOR_OFF);
244	mdelay(250);
245
246	HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
247	mdelay(500);
248
249	/* Wait for f/w to complete initialization (CMD:BUSY == 0) */
250	i = 2000000 / 10;
251	while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
252	udelay(10);
253
254	#else /* PRISM2_PCI_USE_LONG_DELAYS */
255
256	HFA384X_OUTW(reg \| 0x0080, HFA384X_PCICOR_OFF);
257	mdelay(2);
258	HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
259	mdelay(2);
260
261	#endif /* PRISM2_PCI_USE_LONG_DELAYS */
262
263	if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
264	printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
265	}
266	}
267
268
269	static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
270	{
271	struct net_device *dev = local->dev;
272
273	HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
274	mdelay(10);
275	HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
276	mdelay(10);
277	HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
278	mdelay(10);
279	}
280
281
282	static struct prism2_helper_functions prism2_pci_funcs =
283	{
284	.card_present = NULL,
285	.cor_sreset = prism2_pci_cor_sreset,
ff1d2767 JM	286	.genesis_reset = prism2_pci_genesis_reset,
	287	.hw_type = HOSTAP_HW_PCI,
	288	};
	289
	290
	291	static int prism2_pci_probe(struct pci_dev *pdev,
	292	const struct pci_device_id *id)
	293	{
	294	unsigned long phymem;
	295	void __iomem *mem = NULL;
	296	local_info_t *local = NULL;
	297	struct net_device *dev = NULL;
	298	static int cards_found /* = 0 */;
	299	int irq_registered = 0;
	300	struct hostap_interface *iface;
67e0e473 JM	301	struct hostap_pci_priv *hw_priv;
	302
	303	hw_priv = kmalloc(sizeof(*hw_priv), GFP_KERNEL);
	304	if (hw_priv == NULL)
	305	return -ENOMEM;
	306	memset(hw_priv, 0, sizeof(*hw_priv));
ff1d2767 JM	307
ff1d2767 JM	308	if (pci_enable_device(pdev))
93201999	309	goto err_out_free;
ff1d2767 JM	310
	311	phymem = pci_resource_start(pdev, 0);
	312
	313	if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
	314	printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
	315	goto err_out_disable;
	316	}
	317
	318	mem = ioremap(phymem, pci_resource_len(pdev, 0));
	319	if (mem == NULL) {
	320	printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
	321	goto fail;
	322	}
	323
0cd545d6 DH	324	dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
0cd545d6 DH	325	&pdev->dev);
ff1d2767 JM	326	if (dev == NULL)
	327	goto fail;
	328	iface = netdev_priv(dev);
	329	local = iface->local;
67e0e473	330	local->hw_priv = hw_priv;
ff1d2767 JM	331	cards_found++;
	332
	333	dev->irq = pdev->irq;
67e0e473	334	hw_priv->mem_start = mem;
ff1d2767 JM	335
	336	prism2_pci_cor_sreset(local);
	337
	338	pci_set_drvdata(pdev, dev);
	339
1fb9df5d	340	if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name,
ff1d2767 JM	341	dev)) {
	342	printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
	343	goto fail;
	344	} else
	345	irq_registered = 1;
	346
	347	if (!local->pri_only && prism2_hw_config(dev, 1)) {
	348	printk(KERN_DEBUG "%s: hardware initialization failed\n",
	349	dev_info);
	350	goto fail;
	351	}
	352
	353	printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
	354	"mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
	355
	356	return hostap_hw_ready(dev);
	357
	358	fail:
	359	if (irq_registered && dev)
	360	free_irq(dev->irq, dev);
	361
	362	if (mem)
	363	iounmap(mem);
	364
	365	release_mem_region(phymem, pci_resource_len(pdev, 0));
	366
	367	err_out_disable:
	368	pci_disable_device(pdev);
	369	prism2_free_local_data(dev);
93201999 JM	370
93201999 JM	371	err_out_free:
c355184c	372	kfree(hw_priv);
ff1d2767 JM	373
	374	return -ENODEV;
	375	}
	376
	377
	378	static void prism2_pci_remove(struct pci_dev *pdev)
	379	{
	380	struct net_device *dev;
	381	struct hostap_interface *iface;
	382	void __iomem *mem_start;
67e0e473	383	struct hostap_pci_priv *hw_priv;
ff1d2767 JM	384
	385	dev = pci_get_drvdata(pdev);
	386	iface = netdev_priv(dev);
67e0e473	387	hw_priv = iface->local->hw_priv;
ff1d2767 JM	388
	389	/* Reset the hardware, and ensure interrupts are disabled. */
	390	prism2_pci_cor_sreset(iface->local);
	391	hfa384x_disable_interrupts(dev);
	392
	393	if (dev->irq)
	394	free_irq(dev->irq, dev);
	395
67e0e473	396	mem_start = hw_priv->mem_start;
ff1d2767	397	prism2_free_local_data(dev);
c355184c	398	kfree(hw_priv);
ff1d2767 JM	399
	400	iounmap(mem_start);
	401
	402	release_mem_region(pci_resource_start(pdev, 0),
	403	pci_resource_len(pdev, 0));
	404	pci_disable_device(pdev);
	405	}
	406
	407
	408	#ifdef CONFIG_PM
b2dabd5a	409	static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
ff1d2767 JM	410	{
	411	struct net_device *dev = pci_get_drvdata(pdev);
	412
	413	if (netif_running(dev)) {
	414	netif_stop_queue(dev);
	415	netif_device_detach(dev);
	416	}
	417	prism2_suspend(dev);
	418	pci_save_state(pdev);
	419	pci_disable_device(pdev);
583a4e88	420	pci_set_power_state(pdev, PCI_D3hot);
ff1d2767 JM	421
	422	return 0;
	423	}
	424
	425	static int prism2_pci_resume(struct pci_dev *pdev)
	426	{
	427	struct net_device *dev = pci_get_drvdata(pdev);
	428
	429	pci_enable_device(pdev);
	430	pci_restore_state(pdev);
	431	prism2_hw_config(dev, 0);
	432	if (netif_running(dev)) {
	433	netif_device_attach(dev);
	434	netif_start_queue(dev);
	435	}
	436
	437	return 0;
	438	}
	439	#endif /* CONFIG_PM */
	440
	441
	442	MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
	443
	444	static struct pci_driver prism2_pci_drv_id = {
7a716536	445	.name = "hostap_pci",
ff1d2767 JM	446	.id_table = prism2_pci_id_table,
	447	.probe = prism2_pci_probe,
	448	.remove = prism2_pci_remove,
	449	#ifdef CONFIG_PM
	450	.suspend = prism2_pci_suspend,
	451	.resume = prism2_pci_resume,
	452	#endif /* CONFIG_PM */
	453	/* Linux 2.4.6 added save_state and enable_wake that are not used here
	454	*/
	455	};
	456
	457
	458	static int __init init_prism2_pci(void)
	459	{
	460	printk(KERN_INFO "%s: %s\n", dev_info, version);
	461
	462	return pci_register_driver(&prism2_pci_drv_id);
	463	}
	464
	465
	466	static void __exit exit_prism2_pci(void)
	467	{
	468	pci_unregister_driver(&prism2_pci_drv_id);
	469	printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
	470	}
	471
	472
	473	module_init(init_prism2_pci);
	474	module_exit(exit_prism2_pci);