[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/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;
	local_info_t *local;
	unsigned long flags;

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

	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;
	local_info_t *local;
	unsigned long flags;
	u8 v;

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

	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;
	local_info_t *local;
	unsigned long flags;

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

	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;
	local_info_t *local;
	unsigned long flags;
	u16 v;

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

	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:
	kfree(hw_priv);

	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);
	kfree(hw_priv);
	if (local)
		local->hw_priv = NULL;
	prism2_free_local_data(dev);

	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;
	kfree(hw_priv);
	iface->local->hw_priv = NULL;
	prism2_free_local_data(dev);

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