Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2270 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c
new file mode 100644
index 00000000000..1433e5aaf1b
--- /dev/null
+++ b/drivers/net/wireless/wl3501_cs.c
@@ -0,0 +1,2270 @@
+/*
+ * WL3501 Wireless LAN PCMCIA Card Driver for Linux
+ * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
+ * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
+ *
+ * References used by Fox Chen while writing the original driver for 2.0.30:
+ *
+ *   1. WL24xx packet drivers (tooasm.asm)
+ *   2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
+ *   3. IEEE 802.11
+ *   4. Linux network driver (/usr/src/linux/drivers/net)
+ *   5. ISA card driver - wl24.c
+ *   6. Linux PCMCIA skeleton driver - skeleton.c
+ *   7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
+ *
+ * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
+ *   1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
+ *      rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
+ *      (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
+ *       ETHER/IP/UDP/TCP header, and acknowledgement overhead)
+ *
+ * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
+ * 173 Kbytes/s in TCP.
+ *
+ * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
+ * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
+ */
+#undef REALLY_SLOW_IO	/* most systems can safely undef this */
+
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/ethtool.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fcntl.h>
+#include <linux/if_arp.h>
+#include <linux/ioport.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/wireless.h>
+
+#include <net/iw_handler.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include "wl3501.h"
+
+#ifndef __i386__
+#define slow_down_io()
+#endif
+
+/* For rough constant delay */
+#define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
+
+/*
+ * All the PCMCIA modules use PCMCIA_DEBUG to control debugging.  If you do not
+ * define PCMCIA_DEBUG at all, all the debug code will be left out.  If you
+ * compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
+ * but it can then be enabled for specific modules at load time with a
+ * 'pc_debug=#' option to insmod.
+ */
+#define PCMCIA_DEBUG 0
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0);
+#define dprintk(n, format, args...) \
+	{ if (pc_debug > (n)) \
+		printk(KERN_INFO "%s: " format "\n", __FUNCTION__ , ##args); }
+#else
+#define dprintk(n, format, args...)
+#endif
+
+#define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
+#define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
+#define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
+
+#define WL3501_RELEASE_TIMEOUT (25 * HZ)
+#define WL3501_MAX_ADHOC_TRIES 16
+
+#define WL3501_RESUME	0
+#define WL3501_SUSPEND	1
+
+/*
+ * The event() function is this driver's Card Services event handler.  It will
+ * be called by Card Services when an appropriate card status event is
+ * received. The config() and release() entry points are used to configure or
+ * release a socket, in response to card insertion and ejection events.  They
+ * are invoked from the wl24 event handler.
+ */
+static void wl3501_config(dev_link_t *link);
+static void wl3501_release(dev_link_t *link);
+static int wl3501_event(event_t event, int pri, event_callback_args_t *args);
+
+/*
+ * The dev_info variable is the "key" that is used to match up this
+ * device driver with appropriate cards, through the card configuration
+ * database.
+ */
+static dev_info_t wl3501_dev_info = "wl3501_cs";
+
+static int wl3501_chan2freq[] = {
+	[0]  = 2412, [1]  = 2417, [2]  = 2422, [3]  = 2427, [4] = 2432,
+	[5]  = 2437, [6]  = 2442, [7]  = 2447, [8]  = 2452, [9] = 2457,
+	[10] = 2462, [11] = 2467, [12] = 2472, [13] = 2477,
+};
+
+static const struct {
+	int reg_domain;
+	int min, max, deflt;
+} iw_channel_table[] = {
+	{
+		.reg_domain = IW_REG_DOMAIN_FCC,
+		.min	    = 1,
+		.max	    = 11,
+		.deflt	    = 1,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_DOC,
+		.min	    = 1,
+		.max	    = 11,
+		.deflt	    = 1,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_ETSI,
+		.min	    = 1,
+		.max	    = 13,
+		.deflt	    = 1,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_SPAIN,
+		.min	    = 10,
+		.max	    = 11,
+		.deflt	    = 10,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_FRANCE,
+		.min	    = 10,
+		.max	    = 13,
+		.deflt	    = 10,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_MKK,
+		.min	    = 14,
+		.max	    = 14,
+		.deflt	    = 14,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_MKK1,
+		.min	    = 1,
+		.max	    = 14,
+		.deflt	    = 1,
+	},
+	{
+		.reg_domain = IW_REG_DOMAIN_ISRAEL,
+		.min	    = 3,
+		.max	    = 9,
+		.deflt	    = 9,
+	},
+};
+
+/**
+ * iw_valid_channel - validate channel in regulatory domain
+ * @reg_comain - regulatory domain
+ * @channel - channel to validate
+ *
+ * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
+ */
+static int iw_valid_channel(int reg_domain, int channel)
+{
+	int i, rc = 0;
+
+	for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
+		if (reg_domain == iw_channel_table[i].reg_domain) {
+			rc = channel >= iw_channel_table[i].min &&
+			     channel <= iw_channel_table[i].max;
+			break;
+		}
+	return rc;
+}
+
+/**
+ * iw_default_channel - get default channel for a regulatory domain
+ * @reg_comain - regulatory domain
+ *
+ * Returns the default channel for a regulatory domain
+ */
+static int iw_default_channel(int reg_domain)
+{
+	int i, rc = 1;
+
+	for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
+		if (reg_domain == iw_channel_table[i].reg_domain) {
+			rc = iw_channel_table[i].deflt;
+			break;
+		}
+	return rc;
+}
+
+static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
+				     struct iw_mgmt_info_element *el,
+				     void *value, int len)
+{
+	el->id  = id;
+	el->len = len;
+	memcpy(el->data, value, len);
+}
+
+static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
+				      struct iw_mgmt_info_element *from)
+{
+	iw_set_mgmt_info_element(from->id, to, from->data, from->len);
+}
+
+/*
+ * A linked list of "instances" of the wl24 device.  Each actual PCMCIA card
+ * corresponds to one device instance, and is described by one dev_link_t
+ * structure (defined in ds.h).
+ *
+ * You may not want to use a linked list for this -- for example, the memory
+ * card driver uses an array of dev_link_t pointers, where minor device numbers
+ * are used to derive the corresponding array index.
+ */
+static dev_link_t *wl3501_dev_list;
+
+static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
+{
+	wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
+}
+
+/*
+ * Get Ethernet MAC addresss.
+ *
+ * WARNING: We switch to FPAGE0 and switc back again.
+ *          Making sure there is no other WL function beening called by ISR.
+ */
+static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
+{
+	int base_addr = this->base_addr;
+
+	/* get MAC addr */
+	wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
+	wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL);	/* LMAL */
+	wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);	/* LMAH */
+
+	/* wait for reading EEPROM */
+	WL3501_NOPLOOP(100);
+	this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
+	wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
+	wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
+	WL3501_NOPLOOP(100);
+	this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
+	WL3501_NOPLOOP(100);
+	this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
+	/* switch to SRAM Page 0 (for safety) */
+	wl3501_switch_page(this, WL3501_BSS_SPAGE0);
+
+	/* The MAC addr should be 00:60:... */
+	return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
+}
+
+/**
+ * wl3501_set_to_wla - Move 'size' bytes from PC to card
+ * @dest: Card addressing space
+ * @src: PC addressing space
+ * @size: Bytes to move
+ *
+ * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
+ */
+void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src, int size)
+{
+	/* switch to SRAM Page 0 */
+	wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
+						   WL3501_BSS_SPAGE0);
+	/* set LMAL and LMAH */
+	wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
+	wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
+
+	/* rep out to Port A */
+	wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
+}
+
+/**
+ * wl3501_get_from_wla - Move 'size' bytes from card to PC
+ * @src: Card addressing space
+ * @dest: PC addressing space
+ * @size: Bytes to move
+ *
+ * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
+ */
+void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
+			 int size)
+{
+	/* switch to SRAM Page 0 */
+	wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
+						  WL3501_BSS_SPAGE0);
+	/* set LMAL and LMAH */
+	wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
+	wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
+
+	/* rep get from Port A */
+	insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
+}
+
+/*
+ * Get/Allocate a free Tx Data Buffer
+ *
+ *  *--------------*-----------------*----------------------------------*
+ *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
+ *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
+ *  *--------------*-----------------*----------------------------------*
+ *  \               \- IEEE 802.11 -/ \-------------- len --------------/
+ *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
+ *
+ * Return = Postion in Card
+ */
+static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
+{
+	u16 next, blk_cnt = 0, zero = 0;
+	u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
+	u16 ret = 0;
+
+	if (full_len > this->tx_buffer_cnt * 254)
+		goto out;
+	ret = this->tx_buffer_head;
+	while (full_len) {
+		if (full_len < 254)
+			full_len = 0;
+		else
+			full_len -= 254;
+		wl3501_get_from_wla(this, this->tx_buffer_head, &next,
+				    sizeof(next));
+		if (!full_len)
+			wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
+					  sizeof(zero));
+		this->tx_buffer_head = next;
+		blk_cnt++;
+		/* if buffer is not enough */
+		if (!next && full_len) {
+			this->tx_buffer_head = ret;
+			ret = 0;
+			goto out;
+		}
+	}
+	this->tx_buffer_cnt -= blk_cnt;
+out:
+	return ret;
+}
+
+/*
+ * Free an allocated Tx Buffer. ptr must be correct position.
+ */
+static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
+{
+	/* check if all space is not free */
+	if (!this->tx_buffer_head)
+		this->tx_buffer_head = ptr;
+	else
+		wl3501_set_to_wla(this, this->tx_buffer_tail,
+				  &ptr, sizeof(ptr));
+	while (ptr) {
+		u16 next;
+
+		this->tx_buffer_cnt++;
+		wl3501_get_from_wla(this, ptr, &next, sizeof(next));
+		this->tx_buffer_tail = ptr;
+		ptr = next;
+	}
+}
+
+static int wl3501_esbq_req_test(struct wl3501_card *this)
+{
+	u8 tmp;
+
+	wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
+	return tmp & 0x80;
+}
+
+static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
+{
+	u16 tmp = 0;
+
+	wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
+	wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
+	this->esbq_req_head += 4;
+	if (this->esbq_req_head >= this->esbq_req_end)
+		this->esbq_req_head = this->esbq_req_start;
+}
+
+static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
+{
+	int rc = -EIO;
+
+	if (wl3501_esbq_req_test(this)) {
+		u16 ptr = wl3501_get_tx_buffer(this, sig_size);
+		if (ptr) {
+			wl3501_set_to_wla(this, ptr, sig, sig_size);
+			wl3501_esbq_req(this, &ptr);
+			rc = 0;
+		}
+	}
+	return rc;
+}
+
+static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
+				void *bf, int size)
+{
+	struct wl3501_get_req sig = {
+		.sig_id	    = WL3501_SIG_GET_REQ,
+		.mib_attrib = index,
+	};
+	unsigned long flags;
+	int rc = -EIO;
+
+	spin_lock_irqsave(&this->lock, flags);
+	if (wl3501_esbq_req_test(this)) {
+		u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
+		if (ptr) {
+			wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
+			wl3501_esbq_req(this, &ptr);
+			this->sig_get_confirm.mib_status = 255;
+			spin_unlock_irqrestore(&this->lock, flags);
+			rc = wait_event_interruptible(this->wait,
+				this->sig_get_confirm.mib_status != 255);
+			if (!rc)
+				memcpy(bf, this->sig_get_confirm.mib_value,
+				       size);
+			goto out;
+		}
+	}
+	spin_unlock_irqrestore(&this->lock, flags);
+out:
+	return rc;
+}
+
+static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
+{
+	struct wl3501_pwr_mgmt_req sig = {
+		.sig_id		= WL3501_SIG_PWR_MGMT_REQ,
+		.pwr_save	= suspend,
+		.wake_up	= !suspend,
+		.receive_dtims	= 10,
+	};
+	unsigned long flags;
+	int rc = -EIO;
+
+	spin_lock_irqsave(&this->lock, flags);
+	if (wl3501_esbq_req_test(this)) {
+		u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
+		if (ptr) {
+			wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
+			wl3501_esbq_req(this, &ptr);
+			this->sig_pwr_mgmt_confirm.status = 255;
+			spin_unlock_irqrestore(&this->lock, flags);
+			rc = wait_event_interruptible(this->wait,
+				this->sig_pwr_mgmt_confirm.status != 255);
+			printk(KERN_INFO "%s: %s status=%d\n", __FUNCTION__,
+			       suspend ? "suspend" : "resume",
+			       this->sig_pwr_mgmt_confirm.status);
+			goto out;
+		}
+	}
+	spin_unlock_irqrestore(&this->lock, flags);
+out:
+	return rc;
+}
+
+/**
+ * wl3501_send_pkt - Send a packet.
+ * @this - card
+ *
+ * Send a packet.
+ *
+ * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
+ *                                   data[6] - data[11] is Src MAC Addr)
+ * Ref: IEEE 802.11
+ */
+static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
+{
+	u16 bf, sig_bf, next, tmplen, pktlen;
+	struct wl3501_md_req sig = {
+		.sig_id = WL3501_SIG_MD_REQ,
+	};
+	u8 *pdata = (char *)data;
+	int rc = -EIO;
+
+	if (wl3501_esbq_req_test(this)) {
+		sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
+		rc = -ENOMEM;
+		if (!sig_bf)	/* No free buffer available */
+			goto out;
+		bf = wl3501_get_tx_buffer(this, len + 26 + 24);
+		if (!bf) {
+			/* No free buffer available */
+			wl3501_free_tx_buffer(this, sig_bf);
+			goto out;
+		}
+		rc = 0;
+		memcpy(&sig.daddr[0], pdata, 12);
+		pktlen = len - 12;
+		pdata += 12;
+		sig.data = bf;
+		if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
+			u8 addr4[ETH_ALEN] = {
+				[0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
+			};
+
+			wl3501_set_to_wla(this, bf + 2 +
+					  offsetof(struct wl3501_tx_hdr, addr4),
+					  addr4, sizeof(addr4));
+			sig.size = pktlen + 24 + 4 + 6;
+			if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
+				tmplen = 254 - sizeof(struct wl3501_tx_hdr);
+				pktlen -= tmplen;
+			} else {
+				tmplen = pktlen;
+				pktlen = 0;
+			}
+			wl3501_set_to_wla(this,
+					  bf + 2 + sizeof(struct wl3501_tx_hdr),
+					  pdata, tmplen);
+			pdata += tmplen;
+			wl3501_get_from_wla(this, bf, &next, sizeof(next));
+			bf = next;
+		} else {
+			sig.size = pktlen + 24 + 4 - 2;
+			pdata += 2;
+			pktlen -= 2;
+			if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
+				tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
+				pktlen -= tmplen;
+			} else {
+				tmplen = pktlen;
+				pktlen = 0;
+			}
+			wl3501_set_to_wla(this, bf + 2 +
+					  offsetof(struct wl3501_tx_hdr, addr4),
+					  pdata, tmplen);
+			pdata += tmplen;
+			wl3501_get_from_wla(this, bf, &next, sizeof(next));
+			bf = next;
+		}
+		while (pktlen > 0) {
+			if (pktlen > 254) {
+				tmplen = 254;
+				pktlen -= 254;
+			} else {
+				tmplen = pktlen;
+				pktlen = 0;
+			}
+			wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
+			pdata += tmplen;
+			wl3501_get_from_wla(this, bf, &next, sizeof(next));
+			bf = next;
+		}
+		wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
+		wl3501_esbq_req(this, &sig_bf);
+	}
+out:
+	return rc;
+}
+
+static int wl3501_mgmt_resync(struct wl3501_card *this)
+{
+	struct wl3501_resync_req sig = {
+		.sig_id = WL3501_SIG_RESYNC_REQ,
+	};
+
+	return wl3501_esbq_exec(this, &sig, sizeof(sig));
+}
+
+static inline int wl3501_fw_bss_type(struct wl3501_card *this)
+{
+	return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
+						 WL3501_NET_TYPE_ADHOC;
+}
+
+static inline int wl3501_fw_cap_info(struct wl3501_card *this)
+{
+	return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
+						 WL3501_MGMT_CAPABILITY_IBSS;
+}
+
+static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
+{
+	struct wl3501_scan_req sig = {
+		.sig_id		= WL3501_SIG_SCAN_REQ,
+		.scan_type	= WL3501_SCAN_TYPE_ACTIVE,
+		.probe_delay	= 0x10,
+		.min_chan_time	= chan_time,
+		.max_chan_time	= chan_time,
+		.bss_type	= wl3501_fw_bss_type(this),
+	};
+
+	this->bss_cnt = this->join_sta_bss = 0;
+	return wl3501_esbq_exec(this, &sig, sizeof(sig));
+}
+
+static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
+{
+	struct wl3501_join_req sig = {
+		.sig_id		  = WL3501_SIG_JOIN_REQ,
+		.timeout	  = 10,
+		.ds_pset = {
+			.el = {
+				.id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
+				.len = 1,
+			},
+			.chan	= this->chan,
+		},
+	};
+
+	memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
+	return wl3501_esbq_exec(this, &sig, sizeof(sig));
+}
+
+static int wl3501_mgmt_start(struct wl3501_card *this)
+{
+	struct wl3501_start_req sig = {
+		.sig_id			= WL3501_SIG_START_REQ,
+		.beacon_period		= 400,
+		.dtim_period		= 1,
+		.ds_pset = {
+			.el = {
+				.id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
+				.len = 1,
+			},
+			.chan	= this->chan,
+		},
+		.bss_basic_rset	= {
+			.el = {
+				.id	= IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
+				.len = 2,
+			},
+			.data_rate_labels = {
+				[0] = IW_MGMT_RATE_LABEL_MANDATORY |
+				      IW_MGMT_RATE_LABEL_1MBIT,
+				[1] = IW_MGMT_RATE_LABEL_MANDATORY |
+				      IW_MGMT_RATE_LABEL_2MBIT,
+			},
+		},
+		.operational_rset	= {
+			.el = {
+				.id	= IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
+				.len = 2,
+			},
+			.data_rate_labels = {
+				[0] = IW_MGMT_RATE_LABEL_MANDATORY |
+				      IW_MGMT_RATE_LABEL_1MBIT,
+				[1] = IW_MGMT_RATE_LABEL_MANDATORY |
+				      IW_MGMT_RATE_LABEL_2MBIT,
+			},
+		},
+		.ibss_pset		= {
+			.el = {
+				.id	 = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
+				.len     = 2,
+			},
+			.atim_window = 10,
+		},
+		.bss_type		= wl3501_fw_bss_type(this),
+		.cap_info		= wl3501_fw_cap_info(this),
+	};
+
+	iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
+	iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
+	return wl3501_esbq_exec(this, &sig, sizeof(sig));
+}
+
+static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
+{
+	u16 i = 0;
+	int matchflag = 0;
+	struct wl3501_scan_confirm sig;
+
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+	if (sig.status == WL3501_STATUS_SUCCESS) {
+		dprintk(3, "success");
+		if ((this->net_type == IW_MODE_INFRA &&
+		     (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
+		    (this->net_type == IW_MODE_ADHOC &&
+		     (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
+		    this->net_type == IW_MODE_AUTO) {
+			if (!this->essid.el.len)
+				matchflag = 1;
+			else if (this->essid.el.len == 3 &&
+				 !memcmp(this->essid.essid, "ANY", 3))
+				matchflag = 1;
+			else if (this->essid.el.len != sig.ssid.el.len)
+				matchflag = 0;
+			else if (memcmp(this->essid.essid, sig.ssid.essid,
+					this->essid.el.len))
+				matchflag = 0;
+			else
+				matchflag = 1;
+			if (matchflag) {
+				for (i = 0; i < this->bss_cnt; i++) {
+					if (!memcmp(this->bss_set[i].bssid,
+						    sig.bssid, ETH_ALEN)) {
+						matchflag = 0;
+						break;
+					}
+				}
+			}
+			if (matchflag && (i < 20)) {
+				memcpy(&this->bss_set[i].beacon_period,
+				       &sig.beacon_period, 73);
+				this->bss_cnt++;
+				this->rssi = sig.rssi;
+			}
+		}
+	} else if (sig.status == WL3501_STATUS_TIMEOUT) {
+		dprintk(3, "timeout");
+		this->join_sta_bss = 0;
+		for (i = this->join_sta_bss; i < this->bss_cnt; i++)
+			if (!wl3501_mgmt_join(this, i))
+				break;
+		this->join_sta_bss = i;
+		if (this->join_sta_bss == this->bss_cnt) {
+			if (this->net_type == IW_MODE_INFRA)
+				wl3501_mgmt_scan(this, 100);
+			else {
+				this->adhoc_times++;
+				if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
+					wl3501_mgmt_start(this);
+				else
+					wl3501_mgmt_scan(this, 100);
+			}
+		}
+	}
+}
+
+/**
+ * wl3501_block_interrupt - Mask interrupt from SUTRO
+ * @this - card
+ *
+ * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
+ * Return: 1 if interrupt is originally enabled
+ */
+static int wl3501_block_interrupt(struct wl3501_card *this)
+{
+	u8 old = inb(this->base_addr + WL3501_NIC_GCR);
+	u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
+			WL3501_GCR_ENECINT));
+
+	wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
+	return old & WL3501_GCR_ENECINT;
+}
+
+/**
+ * wl3501_unblock_interrupt - Enable interrupt from SUTRO
+ * @this - card
+ *
+ * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
+ * Return: 1 if interrupt is originally enabled
+ */
+static int wl3501_unblock_interrupt(struct wl3501_card *this)
+{
+	u8 old = inb(this->base_addr + WL3501_NIC_GCR);
+	u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
+		  WL3501_GCR_ENECINT;
+
+	wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
+	return old & WL3501_GCR_ENECINT;
+}
+
+/**
+ * wl3501_receive - Receive data from Receive Queue.
+ *
+ * Receive data from Receive Queue.
+ *
+ * @this: card
+ * @bf: address of host
+ * @size: size of buffer.
+ */
+static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
+{
+	u16 next_addr, next_addr1;
+	u8 *data = bf + 12;
+
+	size -= 12;
+	wl3501_get_from_wla(this, this->start_seg + 2,
+			    &next_addr, sizeof(next_addr));
+	if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
+		wl3501_get_from_wla(this,
+				    this->start_seg +
+					sizeof(struct wl3501_rx_hdr), data,
+				    WL3501_BLKSZ -
+					sizeof(struct wl3501_rx_hdr));
+		size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
+		data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
+	} else {
+		wl3501_get_from_wla(this,
+				    this->start_seg +
+					sizeof(struct wl3501_rx_hdr),
+				    data, size);
+		size = 0;
+	}
+	while (size > 0) {
+		if (size > WL3501_BLKSZ - 5) {
+			wl3501_get_from_wla(this, next_addr + 5, data,
+					    WL3501_BLKSZ - 5);
+			size -= WL3501_BLKSZ - 5;
+			data += WL3501_BLKSZ - 5;
+			wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
+					    sizeof(next_addr1));
+			next_addr = next_addr1;
+		} else {
+			wl3501_get_from_wla(this, next_addr + 5, data, size);
+			size = 0;
+		}
+	}
+	return 0;
+}
+
+static void wl3501_esbq_req_free(struct wl3501_card *this)
+{
+	u8 tmp;
+	u16 addr;
+
+	if (this->esbq_req_head == this->esbq_req_tail)
+		goto out;
+	wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
+	if (!(tmp & 0x80))
+		goto out;
+	wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
+	wl3501_free_tx_buffer(this, addr);
+	this->esbq_req_tail += 4;
+	if (this->esbq_req_tail >= this->esbq_req_end)
+		this->esbq_req_tail = this->esbq_req_start;
+out:
+	return;
+}
+
+static int wl3501_esbq_confirm(struct wl3501_card *this)
+{
+	u8 tmp;
+
+	wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
+	return tmp & 0x80;
+}
+
+static void wl3501_online(struct net_device *dev)
+{
+	struct wl3501_card *this = dev->priv;
+
+	printk(KERN_INFO "%s: Wireless LAN online. BSSID: "
+	       "%02X %02X %02X %02X %02X %02X\n", dev->name,
+	       this->bssid[0], this->bssid[1], this->bssid[2],
+	       this->bssid[3], this->bssid[4], this->bssid[5]);
+	netif_wake_queue(dev);
+}
+
+static void wl3501_esbq_confirm_done(struct wl3501_card *this)
+{
+	u8 tmp = 0;
+
+	wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
+	this->esbq_confirm += 4;
+	if (this->esbq_confirm >= this->esbq_confirm_end)
+		this->esbq_confirm = this->esbq_confirm_start;
+}
+
+static int wl3501_mgmt_auth(struct wl3501_card *this)
+{
+	struct wl3501_auth_req sig = {
+		.sig_id	 = WL3501_SIG_AUTH_REQ,
+		.type	 = WL3501_SYS_TYPE_OPEN,
+		.timeout = 1000,
+	};
+
+	dprintk(3, "entry");
+	memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
+	return wl3501_esbq_exec(this, &sig, sizeof(sig));
+}
+
+static int wl3501_mgmt_association(struct wl3501_card *this)
+{
+	struct wl3501_assoc_req sig = {
+		.sig_id		 = WL3501_SIG_ASSOC_REQ,
+		.timeout	 = 1000,
+		.listen_interval = 5,
+		.cap_info	 = this->cap_info,
+	};
+
+	dprintk(3, "entry");
+	memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
+	return wl3501_esbq_exec(this, &sig, sizeof(sig));
+}
+
+static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
+{
+	struct wl3501_card *this = dev->priv;
+	struct wl3501_join_confirm sig;
+
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+	if (sig.status == WL3501_STATUS_SUCCESS) {
+		if (this->net_type == IW_MODE_INFRA) {
+			if (this->join_sta_bss < this->bss_cnt) {
+				const int i = this->join_sta_bss;
+				memcpy(this->bssid,
+				       this->bss_set[i].bssid, ETH_ALEN);
+				this->chan = this->bss_set[i].ds_pset.chan;
+				iw_copy_mgmt_info_element(&this->keep_essid.el,
+						     &this->bss_set[i].ssid.el);
+				wl3501_mgmt_auth(this);
+			}
+		} else {
+			const int i = this->join_sta_bss;
+
+			memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
+			this->chan = this->bss_set[i].ds_pset.chan;
+			iw_copy_mgmt_info_element(&this->keep_essid.el,
+						  &this->bss_set[i].ssid.el);
+			wl3501_online(dev);
+		}
+	} else {
+		int i;
+		this->join_sta_bss++;
+		for (i = this->join_sta_bss; i < this->bss_cnt; i++)
+			if (!wl3501_mgmt_join(this, i))
+				break;
+		this->join_sta_bss = i;
+		if (this->join_sta_bss == this->bss_cnt) {
+			if (this->net_type == IW_MODE_INFRA)
+				wl3501_mgmt_scan(this, 100);
+			else {
+				this->adhoc_times++;
+				if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
+					wl3501_mgmt_start(this);
+				else
+					wl3501_mgmt_scan(this, 100);
+			}
+		}
+	}
+}
+
+static inline void wl3501_alarm_interrupt(struct net_device *dev,
+					  struct wl3501_card *this)
+{
+	if (this->net_type == IW_MODE_INFRA) {
+		printk(KERN_INFO "Wireless LAN offline\n");
+		netif_stop_queue(dev);
+		wl3501_mgmt_resync(this);
+	}
+}
+
+static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
+					       struct wl3501_card *this,
+					       u16 addr)
+{
+	struct wl3501_md_confirm sig;
+
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+	wl3501_free_tx_buffer(this, sig.data);
+	if (netif_queue_stopped(dev))
+		netif_wake_queue(dev);
+}
+
+static inline void wl3501_md_ind_interrupt(struct net_device *dev,
+					   struct wl3501_card *this, u16 addr)
+{
+	struct wl3501_md_ind sig;
+	struct sk_buff *skb;
+	u8 rssi, addr4[ETH_ALEN];
+	u16 pkt_len;
+
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+	this->start_seg = sig.data;
+	wl3501_get_from_wla(this,
+			    sig.data + offsetof(struct wl3501_rx_hdr, rssi),
+			    &rssi, sizeof(rssi));
+	this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
+
+	wl3501_get_from_wla(this,
+			    sig.data +
+				offsetof(struct wl3501_rx_hdr, addr4),
+			    &addr4, sizeof(addr4));
+	if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
+	      addr4[2] == 0x03 && addr4[4] == 0x00)) {
+		printk(KERN_INFO "Insupported packet type!\n");
+		return;
+	}
+	pkt_len = sig.size + 12 - 24 - 4 - 6;
+
+	skb = dev_alloc_skb(pkt_len + 5);
+
+	if (!skb) {
+		printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
+		       dev->name, pkt_len);
+		this->stats.rx_dropped++;
+	} else {
+		skb->dev = dev;
+		skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
+		eth_copy_and_sum(skb, (unsigned char *)&sig.daddr, 12, 0);
+		wl3501_receive(this, skb->data, pkt_len);
+		skb_put(skb, pkt_len);
+		skb->protocol	= eth_type_trans(skb, dev);
+		dev->last_rx	= jiffies;
+		this->stats.rx_packets++;
+		this->stats.rx_bytes += skb->len;
+		netif_rx(skb);
+	}
+}
+
+static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
+						u16 addr, void *sig, int size)
+{
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
+			    sizeof(this->sig_get_confirm));
+	wake_up(&this->wait);
+}
+
+static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
+						  struct wl3501_card *this,
+						  u16 addr)
+{
+	struct wl3501_start_confirm sig;
+
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+	if (sig.status == WL3501_STATUS_SUCCESS)
+		netif_wake_queue(dev);
+}
+
+static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
+						  u16 addr)
+{
+	struct wl3501_card *this = dev->priv;
+	struct wl3501_assoc_confirm sig;
+
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+
+	if (sig.status == WL3501_STATUS_SUCCESS)
+		wl3501_online(dev);
+}
+
+static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
+						 u16 addr)
+{
+	struct wl3501_auth_confirm sig;
+
+	dprintk(3, "entry");
+	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
+
+	if (sig.status == WL3501_STATUS_SUCCESS)
+		wl3501_mgmt_association(this);
+	else
+		wl3501_mgmt_resync(this);
+}
+
+static inline void wl3501_rx_interrupt(struct net_device *dev)
+{
+	int morepkts;
+	u16 addr;
+	u8 sig_id;
+	struct wl3501_card *this = dev->priv;
+
+	dprintk(3, "entry");
+loop:
+	morepkts = 0;
+	if (!wl3501_esbq_confirm(this))
+		goto free;
+	wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
+	wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
+
+	switch (sig_id) {
+	case WL3501_SIG_DEAUTH_IND:
+	case WL3501_SIG_DISASSOC_IND:
+	case WL3501_SIG_ALARM:
+		wl3501_alarm_interrupt(dev, this);
+		break;
+	case WL3501_SIG_MD_CONFIRM:
+		wl3501_md_confirm_interrupt(dev, this, addr);
+		break;
+	case WL3501_SIG_MD_IND:
+		wl3501_md_ind_interrupt(dev, this, addr);
+		break;
+	case WL3501_SIG_GET_CONFIRM:
+		wl3501_get_confirm_interrupt(this, addr,
+					     &this->sig_get_confirm,
+					     sizeof(this->sig_get_confirm));
+		break;
+	case WL3501_SIG_PWR_MGMT_CONFIRM:
+		wl3501_get_confirm_interrupt(this, addr,
+					     &this->sig_pwr_mgmt_confirm,
+					    sizeof(this->sig_pwr_mgmt_confirm));
+		break;
+	case WL3501_SIG_START_CONFIRM:
+		wl3501_start_confirm_interrupt(dev, this, addr);
+		break;
+	case WL3501_SIG_SCAN_CONFIRM:
+		wl3501_mgmt_scan_confirm(this, addr);
+		break;
+	case WL3501_SIG_JOIN_CONFIRM:
+		wl3501_mgmt_join_confirm(dev, addr);
+		break;
+	case WL3501_SIG_ASSOC_CONFIRM:
+		wl3501_assoc_confirm_interrupt(dev, addr);
+		break;
+	case WL3501_SIG_AUTH_CONFIRM:
+		wl3501_auth_confirm_interrupt(this, addr);
+		break;
+	case WL3501_SIG_RESYNC_CONFIRM:
+		wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
+		break;
+	}
+	wl3501_esbq_confirm_done(this);
+	morepkts = 1;
+	/* free request if necessary */
+free:
+	wl3501_esbq_req_free(this);
+	if (morepkts)
+		goto loop;
+}
+
+static inline void wl3501_ack_interrupt(struct wl3501_card *this)
+{
+	wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
+}
+
+/**
+ * wl3501_interrupt - Hardware interrupt from card.
+ * @irq - Interrupt number
+ * @dev_id - net_device
+ * @regs - registers
+ *
+ * We must acknowledge the interrupt as soon as possible, and block the
+ * interrupt from the same card immediately to prevent re-entry.
+ *
+ * Before accessing the Control_Status_Block, we must lock SUTRO first.
+ * On the other hand, to prevent SUTRO from malfunctioning, we must
+ * unlock the SUTRO as soon as possible.
+ */
+static irqreturn_t wl3501_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct wl3501_card *this;
+	int handled = 1;
+
+	if (!dev)
+		goto unknown;
+	this = dev->priv;
+	spin_lock(&this->lock);
+	wl3501_ack_interrupt(this);
+	wl3501_block_interrupt(this);
+	wl3501_rx_interrupt(dev);
+	wl3501_unblock_interrupt(this);
+	spin_unlock(&this->lock);
+out:
+	return IRQ_RETVAL(handled);
+unknown:
+	handled = 0;
+	printk(KERN_ERR "%s: irq %d for unknown device.\n", __FUNCTION__, irq);
+	goto out;
+}
+
+static int wl3501_reset_board(struct wl3501_card *this)
+{
+	u8 tmp = 0;
+	int i, rc = 0;
+
+	/* Coreset */
+	wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
+	wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
+	wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
+
+	/* Reset SRAM 0x480 to zero */
+	wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
+
+	/* Start up */
+	wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
+
+	WL3501_NOPLOOP(1024 * 50);
+
+	wl3501_unblock_interrupt(this);	/* acme: was commented */
+
+	/* Polling Self_Test_Status */
+	for (i = 0; i < 10000; i++) {
+		wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
+
+		if (tmp == 'W') {
+			/* firmware complete all test successfully */
+			tmp = 'A';
+			wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
+			goto out;
+		}
+		WL3501_NOPLOOP(10);
+	}
+	printk(KERN_WARNING "%s: failed to reset the board!\n", __FUNCTION__);
+	rc = -ENODEV;
+out:
+	return rc;
+}
+
+static int wl3501_init_firmware(struct wl3501_card *this)
+{
+	u16 ptr, next;
+	int rc = wl3501_reset_board(this);
+
+	if (rc)
+		goto fail;
+	this->card_name[0] = '\0';
+	wl3501_get_from_wla(this, 0x1a00,
+			    this->card_name, sizeof(this->card_name));
+	this->card_name[sizeof(this->card_name) - 1] = '\0';
+	this->firmware_date[0] = '\0';
+	wl3501_get_from_wla(this, 0x1a40,
+			    this->firmware_date, sizeof(this->firmware_date));
+	this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
+	/* Switch to SRAM Page 0 */
+	wl3501_switch_page(this, WL3501_BSS_SPAGE0);
+	/* Read parameter from card */
+	wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
+	wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
+	wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
+	wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
+	wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
+	wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
+	this->esbq_req_tail	= this->esbq_req_head = this->esbq_req_start;
+	this->esbq_req_end     += this->esbq_req_start;
+	this->esbq_confirm	= this->esbq_confirm_start;
+	this->esbq_confirm_end += this->esbq_confirm_start;
+	/* Initial Tx Buffer */
+	this->tx_buffer_cnt = 1;
+	ptr = this->tx_buffer_head;
+	next = ptr + WL3501_BLKSZ;
+	while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
+		this->tx_buffer_cnt++;
+		wl3501_set_to_wla(this, ptr, &next, sizeof(next));
+		ptr = next;
+		next = ptr + WL3501_BLKSZ;
+	}
+	rc = 0;
+	next = 0;
+	wl3501_set_to_wla(this, ptr, &next, sizeof(next));
+	this->tx_buffer_tail = ptr;
+out:
+	return rc;
+fail:
+	printk(KERN_WARNING "%s: failed!\n", __FUNCTION__);
+	goto out;
+}
+
+static int wl3501_close(struct net_device *dev)
+{
+	struct wl3501_card *this = dev->priv;
+	int rc = -ENODEV;
+	unsigned long flags;
+	dev_link_t *link;
+
+	spin_lock_irqsave(&this->lock, flags);
+	/* Check if the device is in wl3501_dev_list */
+	for (link = wl3501_dev_list; link; link = link->next)
+		if (link->priv == dev)
+			break;
+	if (!link)
+		goto out;
+	link->open--;
+
+	/* Stop wl3501_hard_start_xmit() from now on */
+	netif_stop_queue(dev);
+	wl3501_ack_interrupt(this);
+
+	/* Mask interrupts from the SUTRO */
+	wl3501_block_interrupt(this);
+
+	rc = 0;
+	printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
+out:
+	spin_unlock_irqrestore(&this->lock, flags);
+	return rc;
+}
+
+/**
+ * wl3501_reset - Reset the SUTRO.
+ * @dev - network device
+ *
+ * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
+ * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
+ * is running. It seems to be dangerous.
+ */
+static int wl3501_reset(struct net_device *dev)
+{
+	struct wl3501_card *this = dev->priv;
+	int rc = -ENODEV;
+
+	wl3501_block_interrupt(this);
+
+	if (wl3501_init_firmware(this)) {
+		printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
+		       dev->name);
+		/* Free IRQ, and mark IRQ as unused */
+		free_irq(dev->irq, dev);
+		goto out;
+	}
+
+	/*
+	 * Queue has to be started only when the Card is Started
+	 */
+	netif_stop_queue(dev);
+	this->adhoc_times = 0;
+	wl3501_ack_interrupt(this);
+	wl3501_unblock_interrupt(this);
+	wl3501_mgmt_scan(this, 100);
+	dprintk(1, "%s: device reset", dev->name);
+	rc = 0;
+out:
+	return rc;
+}
+
+static void wl3501_tx_timeout(struct net_device *dev)
+{
+	struct wl3501_card *this = dev->priv;
+	struct net_device_stats *stats = &this->stats;
+	unsigned long flags;
+	int rc;
+
+	stats->tx_errors++;
+	spin_lock_irqsave(&this->lock, flags);
+	rc = wl3501_reset(dev);
+	spin_unlock_irqrestore(&this->lock, flags);
+	if (rc)
+		printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
+		       dev->name, rc);
+	else {
+		dev->trans_start = jiffies;
+		netif_wake_queue(dev);
+	}
+}
+
+/*
+ * Return : 0 - OK
+ *	    1 - Could not transmit (dev_queue_xmit will queue it)
+ *		and try to sent it later
+ */
+static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	int enabled, rc;
+	struct wl3501_card *this = dev->priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&this->lock, flags);
+	enabled = wl3501_block_interrupt(this);
+	dev->trans_start = jiffies;
+	rc = wl3501_send_pkt(this, skb->data, skb->len);
+	if (enabled)
+		wl3501_unblock_interrupt(this);
+	if (rc) {
+		++this->stats.tx_dropped;
+		netif_stop_queue(dev);
+	} else {
+		++this->stats.tx_packets;
+		this->stats.tx_bytes += skb->len;
+		kfree_skb(skb);
+
+		if (this->tx_buffer_cnt < 2)
+			netif_stop_queue(dev);
+	}
+	spin_unlock_irqrestore(&this->lock, flags);
+	return rc;
+}
+
+static int wl3501_open(struct net_device *dev)
+{
+	int rc = -ENODEV;
+	struct wl3501_card *this = dev->priv;
+	unsigned long flags;
+	dev_link_t *link;
+
+	spin_lock_irqsave(&this->lock, flags);
+	/* Check if the device is in wl3501_dev_list */
+	for (link = wl3501_dev_list; link; link = link->next)
+		if (link->priv == dev)
+			break;
+	if (!DEV_OK(link))
+		goto out;
+	netif_device_attach(dev);
+	link->open++;
+
+	/* Initial WL3501 firmware */
+	dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
+	if (wl3501_init_firmware(this))
+		goto fail;
+	/* Initial device variables */
+	this->adhoc_times = 0;
+	/* Acknowledge Interrupt, for cleaning last state */
+	wl3501_ack_interrupt(this);
+
+	/* Enable interrupt from card after all */
+	wl3501_unblock_interrupt(this);
+	wl3501_mgmt_scan(this, 100);
+	rc = 0;
+	dprintk(1, "%s: WL3501 opened", dev->name);
+	printk(KERN_INFO "%s: Card Name: %s\n"
+			 "%s: Firmware Date: %s\n",
+			 dev->name, this->card_name,
+			 dev->name, this->firmware_date);
+out:
+	spin_unlock_irqrestore(&this->lock, flags);
+	return rc;
+fail:
+	printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
+	goto out;
+}
+
+struct net_device_stats *wl3501_get_stats(struct net_device *dev)
+{
+	struct wl3501_card *this = dev->priv;
+
+	return &this->stats;
+}
+
+struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
+{
+	struct wl3501_card *this = dev->priv;
+	struct iw_statistics *wstats = &this->wstats;
+	u32 value; /* size checked: it is u32 */
+
+	memset(wstats, 0, sizeof(*wstats));
+	wstats->status = netif_running(dev);
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.code += value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.code += value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.code += value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.retries	= value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.misc += value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.misc += value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.misc += value;
+	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
+				  &value, sizeof(value)))
+		wstats->discard.misc += value;
+	return wstats;
+}
+
+static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
+}
+
+static struct ethtool_ops ops = {
+	.get_drvinfo = wl3501_get_drvinfo
+};
+
+/**
+ * wl3501_detach - deletes a driver "instance"
+ * @link - FILL_IN
+ *
+ * This deletes a driver "instance". The device is de-registered with Card
+ * Services. If it has been released, all local data structures are freed.
+ * Otherwise, the structures will be freed when the device is released.
+ */
+static void wl3501_detach(dev_link_t *link)
+{
+	dev_link_t **linkp;
+
+	/* Locate device structure */
+	for (linkp = &wl3501_dev_list; *linkp; linkp = &(*linkp)->next)
+		if (*linkp == link)
+			break;
+	if (!*linkp)
+		goto out;
+
+	/* If the device is currently configured and active, we won't actually
+	 * delete it yet.  Instead, it is marked so that when the release()
+	 * function is called, that will trigger a proper detach(). */
+
+	if (link->state & DEV_CONFIG) {
+#ifdef PCMCIA_DEBUG
+		printk(KERN_DEBUG "wl3501_cs: detach postponed, '%s' "
+		       "still locked\n", link->dev->dev_name);
+#endif
+		goto out;
+	}
+
+	/* Break the link with Card Services */
+	if (link->handle)
+		pcmcia_deregister_client(link->handle);
+
+	/* Unlink device structure, free pieces */
+	*linkp = link->next;
+
+	if (link->priv)
+		free_netdev(link->priv);
+	kfree(link);
+out:
+	return;
+}
+
+static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
+	return 0;
+}
+
+static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+	int channel = wrqu->freq.m;
+	int rc = -EINVAL;
+
+	if (iw_valid_channel(this->reg_domain, channel)) {
+		this->chan = channel;
+		rc = wl3501_reset(dev);
+	}
+	return rc;
+}
+
+static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
+	wrqu->freq.e = 1;
+	return 0;
+}
+
+static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	int rc = -EINVAL;
+
+	if (wrqu->mode == IW_MODE_INFRA ||
+	    wrqu->mode == IW_MODE_ADHOC ||
+	    wrqu->mode == IW_MODE_AUTO) {
+		struct wl3501_card *this = dev->priv;
+
+		this->net_type = wrqu->mode;
+		rc = wl3501_reset(dev);
+	}
+	return rc;
+}
+
+static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	wrqu->mode = this->net_type;
+	return 0;
+}
+
+static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	wrqu->sens.value = this->rssi;
+	wrqu->sens.disabled = !wrqu->sens.value;
+	wrqu->sens.fixed = 1;
+	return 0;
+}
+
+static int wl3501_get_range(struct net_device *dev,
+			    struct iw_request_info *info,
+			    union iwreq_data *wrqu, char *extra)
+{
+	struct iw_range *range = (struct iw_range *)extra;
+
+	/* Set the length (very important for backward compatibility) */
+	wrqu->data.length = sizeof(*range);
+
+	/* Set all the info we don't care or don't know about to zero */
+	memset(range, 0, sizeof(*range));
+
+	/* Set the Wireless Extension versions */
+	range->we_version_compiled	= WIRELESS_EXT;
+	range->we_version_source	= 1;
+	range->throughput		= 2 * 1000 * 1000;     /* ~2 Mb/s */
+	/* FIXME: study the code to fill in more fields... */
+	return 0;
+}
+
+static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
+			  union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+	static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
+	int rc = -EINVAL;
+
+	/* FIXME: we support other ARPHRDs...*/
+	if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
+		goto out;
+	if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
+		/* FIXME: rescan? */
+	} else
+		memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
+		/* FIXME: rescan? deassoc & scan? */
+	rc = 0;
+out:
+	return rc;
+}
+
+static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
+			  union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	wrqu->ap_addr.sa_family = ARPHRD_ETHER;
+	memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
+	return 0;
+}
+
+static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	/*
+	 * FIXME: trigger scanning with a reset, yes, I'm lazy
+	 */
+	return wl3501_reset(dev);
+}
+
+static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+	int i;
+	char *current_ev = extra;
+	struct iw_event iwe;
+
+	for (i = 0; i < this->bss_cnt; ++i) {
+		iwe.cmd			= SIOCGIWAP;
+		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+		memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
+		current_ev = iwe_stream_add_event(current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_ADDR_LEN);
+		iwe.cmd		  = SIOCGIWESSID;
+		iwe.u.data.flags  = 1;
+		iwe.u.data.length = this->bss_set[i].ssid.el.len;
+		current_ev = iwe_stream_add_point(current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe,
+						  this->bss_set[i].ssid.essid);
+		iwe.cmd	   = SIOCGIWMODE;
+		iwe.u.mode = this->bss_set[i].bss_type;
+		current_ev = iwe_stream_add_event(current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_UINT_LEN);
+		iwe.cmd = SIOCGIWFREQ;
+		iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
+		iwe.u.freq.e = 0;
+		current_ev = iwe_stream_add_event(current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_FREQ_LEN);
+		iwe.cmd = SIOCGIWENCODE;
+		if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
+			iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+		else
+			iwe.u.data.flags = IW_ENCODE_DISABLED;
+		iwe.u.data.length = 0;
+		current_ev = iwe_stream_add_point(current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, NULL);
+	}
+	/* Length of data */
+	wrqu->data.length = (current_ev - extra);
+	wrqu->data.flags = 0; /* FIXME: set properly these flags */
+	return 0;
+}
+
+static int wl3501_set_essid(struct net_device *dev,
+			    struct iw_request_info *info,
+			    union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	if (wrqu->data.flags) {
+		iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
+					 &this->essid.el,
+					 extra, wrqu->data.length);
+	} else { /* We accept any ESSID */
+		iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
+					 &this->essid.el, "ANY", 3);
+	}
+	return wl3501_reset(dev);
+}
+
+static int wl3501_get_essid(struct net_device *dev,
+			    struct iw_request_info *info,
+			    union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&this->lock, flags);
+	wrqu->essid.flags  = 1;
+	wrqu->essid.length = this->essid.el.len;
+	memcpy(extra, this->essid.essid, this->essid.el.len);
+	spin_unlock_irqrestore(&this->lock, flags);
+	return 0;
+}
+
+static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	if (wrqu->data.length > sizeof(this->nick))
+		return -E2BIG;
+	strlcpy(this->nick, extra, wrqu->data.length);
+	return 0;
+}
+
+static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	struct wl3501_card *this = dev->priv;
+
+	strlcpy(extra, this->nick, 32);
+	wrqu->data.length = strlen(extra);
+	return 0;
+}
+
+static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
+			   union iwreq_data *wrqu, char *extra)
+{
+	/*
+	 * FIXME: have to see from where to get this info, perhaps this card
+	 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
+	 * common with the Planet Access Points. -acme
+	 */
+	wrqu->bitrate.value = 2000000;
+	wrqu->bitrate.fixed = 1;
+	return 0;
+}
+
+static int wl3501_get_rts_threshold(struct net_device *dev,
+				    struct iw_request_info *info,
+				    union iwreq_data *wrqu, char *extra)
+{
+	u16 threshold; /* size checked: it is u16 */
+	struct wl3501_card *this = dev->priv;
+	int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
+				      &threshold, sizeof(threshold));
+	if (!rc) {
+		wrqu->rts.value = threshold;
+		wrqu->rts.disabled = threshold >= 2347;
+		wrqu->rts.fixed = 1;
+	}
+	return rc;
+}
+
+static int wl3501_get_frag_threshold(struct net_device *dev,
+				     struct iw_request_info *info,
+				     union iwreq_data *wrqu, char *extra)
+{
+	u16 threshold; /* size checked: it is u16 */
+	struct wl3501_card *this = dev->priv;
+	int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
+				      &threshold, sizeof(threshold));
+	if (!rc) {
+		wrqu->frag.value = threshold;
+		wrqu->frag.disabled = threshold >= 2346;
+		wrqu->frag.fixed = 1;
+	}
+	return rc;
+}
+
+static int wl3501_get_txpow(struct net_device *dev,
+			    struct iw_request_info *info,
+			    union iwreq_data *wrqu, char *extra)
+{
+	u16 txpow;
+	struct wl3501_card *this = dev->priv;
+	int rc = wl3501_get_mib_value(this,
+				      WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
+				      &txpow, sizeof(txpow));
+	if (!rc) {
+		wrqu->txpower.value = txpow;
+		wrqu->txpower.disabled = 0;
+		/*
+		 * From the MIB values I think this can be configurable,
+		 * as it lists several tx power levels -acme
+		 */
+		wrqu->txpower.fixed = 0;
+		wrqu->txpower.flags = IW_TXPOW_MWATT;
+	}
+	return rc;
+}
+
+static int wl3501_get_retry(struct net_device *dev,
+			    struct iw_request_info *info,
+			    union iwreq_data *wrqu, char *extra)
+{
+	u8 retry; /* size checked: it is u8 */
+	struct wl3501_card *this = dev->priv;
+	int rc = wl3501_get_mib_value(this,
+				      WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
+				      &retry, sizeof(retry));
+	if (rc)
+		goto out;
+	if (wrqu->retry.flags & IW_RETRY_MAX) {
+		wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+		goto set_value;
+	}
+	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
+				  &retry, sizeof(retry));
+	if (rc)
+		goto out;
+	wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
+set_value:
+	wrqu->retry.value = retry;
+	wrqu->retry.disabled = 0;
+out:
+	return rc;
+}
+
+static int wl3501_get_encode(struct net_device *dev,
+			     struct iw_request_info *info,
+			     union iwreq_data *wrqu, char *extra)
+{
+	u8 implemented, restricted, keys[100], len_keys, tocopy;
+	struct wl3501_card *this = dev->priv;
+	int rc = wl3501_get_mib_value(this,
+				      WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
+				      &implemented, sizeof(implemented));
+	if (rc)
+		goto out;
+	if (!implemented) {
+		wrqu->encoding.flags = IW_ENCODE_DISABLED;
+		goto out;
+	}
+	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
+				  &restricted, sizeof(restricted));
+	if (rc)
+		goto out;
+	wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
+					    IW_ENCODE_OPEN;
+	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
+				  &len_keys, sizeof(len_keys));
+	if (rc)
+		goto out;
+	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
+				  keys, len_keys);
+	if (rc)
+		goto out;
+	tocopy = min_t(u8, len_keys, wrqu->encoding.length);
+	tocopy = min_t(u8, tocopy, 100);
+	wrqu->encoding.length = tocopy;
+	memset(extra, 0, tocopy);
+	memcpy(extra, keys, tocopy);
+out:
+	return rc;
+}
+
+static int wl3501_get_power(struct net_device *dev,
+			    struct iw_request_info *info,
+			    union iwreq_data *wrqu, char *extra)
+{
+	u8 pwr_state;
+	struct wl3501_card *this = dev->priv;
+	int rc = wl3501_get_mib_value(this,
+				      WL3501_MIB_ATTR_CURRENT_PWR_STATE,
+				      &pwr_state, sizeof(pwr_state));
+	if (rc)
+		goto out;
+	wrqu->power.disabled = !pwr_state;
+	wrqu->power.flags = IW_POWER_ON;
+out:
+	return rc;
+}
+
+static const iw_handler	wl3501_handler[] = {
+	[SIOCGIWNAME	- SIOCIWFIRST] = wl3501_get_name,
+	[SIOCSIWFREQ	- SIOCIWFIRST] = wl3501_set_freq,
+	[SIOCGIWFREQ	- SIOCIWFIRST] = wl3501_get_freq,
+	[SIOCSIWMODE	- SIOCIWFIRST] = wl3501_set_mode,
+	[SIOCGIWMODE	- SIOCIWFIRST] = wl3501_get_mode,
+	[SIOCGIWSENS	- SIOCIWFIRST] = wl3501_get_sens,
+	[SIOCGIWRANGE	- SIOCIWFIRST] = wl3501_get_range,
+	[SIOCSIWSPY	- SIOCIWFIRST] = iw_handler_set_spy,
+	[SIOCGIWSPY	- SIOCIWFIRST] = iw_handler_get_spy,
+	[SIOCSIWTHRSPY	- SIOCIWFIRST] = iw_handler_set_thrspy,
+	[SIOCGIWTHRSPY	- SIOCIWFIRST] = iw_handler_get_thrspy,
+	[SIOCSIWAP	- SIOCIWFIRST] = wl3501_set_wap,
+	[SIOCGIWAP	- SIOCIWFIRST] = wl3501_get_wap,
+	[SIOCSIWSCAN	- SIOCIWFIRST] = wl3501_set_scan,
+	[SIOCGIWSCAN	- SIOCIWFIRST] = wl3501_get_scan,
+	[SIOCSIWESSID	- SIOCIWFIRST] = wl3501_set_essid,
+	[SIOCGIWESSID	- SIOCIWFIRST] = wl3501_get_essid,
+	[SIOCSIWNICKN	- SIOCIWFIRST] = wl3501_set_nick,
+	[SIOCGIWNICKN	- SIOCIWFIRST] = wl3501_get_nick,
+	[SIOCGIWRATE	- SIOCIWFIRST] = wl3501_get_rate,
+	[SIOCGIWRTS	- SIOCIWFIRST] = wl3501_get_rts_threshold,
+	[SIOCGIWFRAG	- SIOCIWFIRST] = wl3501_get_frag_threshold,
+	[SIOCGIWTXPOW	- SIOCIWFIRST] = wl3501_get_txpow,
+	[SIOCGIWRETRY	- SIOCIWFIRST] = wl3501_get_retry,
+	[SIOCGIWENCODE	- SIOCIWFIRST] = wl3501_get_encode,
+	[SIOCGIWPOWER	- SIOCIWFIRST] = wl3501_get_power,
+};
+
+static const struct iw_handler_def wl3501_handler_def = {
+	.num_standard	= sizeof(wl3501_handler) / sizeof(iw_handler),
+	.standard	= (iw_handler *)wl3501_handler,
+	.spy_offset	= offsetof(struct wl3501_card, spy_data),
+};
+
+/**
+ * wl3501_attach - creates an "instance" of the driver
+ *
+ * Creates an "instance" of the driver, allocating local data structures for
+ * one device.  The device is registered with Card Services.
+ *
+ * The dev_link structure is initialized, but we don't actually configure the
+ * card at this point -- we wait until we receive a card insertion event.
+ */
+static dev_link_t *wl3501_attach(void)
+{
+	client_reg_t client_reg;
+	dev_link_t *link;
+	struct net_device *dev;
+	int ret;
+
+	/* Initialize the dev_link_t structure */
+	link = kmalloc(sizeof(*link), GFP_KERNEL);
+	if (!link)
+		goto out;
+	memset(link, 0, sizeof(struct dev_link_t));
+
+	/* The io structure describes IO port mapping */
+	link->io.NumPorts1	= 16;
+	link->io.Attributes1	= IO_DATA_PATH_WIDTH_8;
+	link->io.IOAddrLines	= 5;
+
+	/* Interrupt setup */
+	link->irq.Attributes	= IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+	link->irq.IRQInfo1	= IRQ_LEVEL_ID;
+	link->irq.Handler = wl3501_interrupt;
+
+	/* General socket configuration */
+	link->conf.Attributes	= CONF_ENABLE_IRQ;
+	link->conf.Vcc		= 50;
+	link->conf.IntType	= INT_MEMORY_AND_IO;
+	link->conf.ConfigIndex	= 1;
+	link->conf.Present	= PRESENT_OPTION;
+
+	dev = alloc_etherdev(sizeof(struct wl3501_card));
+	if (!dev)
+		goto out_link;
+	dev->open		= wl3501_open;
+	dev->stop		= wl3501_close;
+	dev->hard_start_xmit	= wl3501_hard_start_xmit;
+	dev->tx_timeout		= wl3501_tx_timeout;
+	dev->watchdog_timeo	= 5 * HZ;
+	dev->get_stats		= wl3501_get_stats;
+	dev->get_wireless_stats = wl3501_get_wireless_stats;
+	dev->wireless_handlers	= (struct iw_handler_def *)&wl3501_handler_def;
+	SET_ETHTOOL_OPS(dev, &ops);
+	netif_stop_queue(dev);
+	link->priv = link->irq.Instance = dev;
+
+	/* Register with Card Services */
+	link->next		 = wl3501_dev_list;
+	wl3501_dev_list		 = link;
+	client_reg.dev_info	 = &wl3501_dev_info;
+	client_reg.EventMask	 = CS_EVENT_CARD_INSERTION |
+				   CS_EVENT_RESET_PHYSICAL |
+				   CS_EVENT_CARD_RESET |
+				   CS_EVENT_CARD_REMOVAL |
+				   CS_EVENT_PM_SUSPEND |
+				   CS_EVENT_PM_RESUME;
+	client_reg.event_handler = wl3501_event;
+	client_reg.Version	 = 0x0210;
+	client_reg.event_callback_args.client_data = link;
+	ret = pcmcia_register_client(&link->handle, &client_reg);
+	if (ret) {
+		cs_error(link->handle, RegisterClient, ret);
+		wl3501_detach(link);
+		link = NULL;
+	}
+out:
+	return link;
+out_link:
+	kfree(link);
+	link = NULL;
+	goto out;
+}
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+/**
+ * wl3501_config - configure the PCMCIA socket and make eth device available
+ * @link - FILL_IN
+ *
+ * wl3501_config() is scheduled to run after a CARD_INSERTION event is
+ * received, to configure the PCMCIA socket, and to make the ethernet device
+ * available to the system.
+ */
+static void wl3501_config(dev_link_t *link)
+{
+	tuple_t tuple;
+	cisparse_t parse;
+	client_handle_t handle = link->handle;
+	struct net_device *dev = link->priv;
+	int i = 0, j, last_fn, last_ret;
+	unsigned char bf[64];
+	struct wl3501_card *this;
+
+	/* This reads the card's CONFIG tuple to find its config registers. */
+	tuple.Attributes	= 0;
+	tuple.DesiredTuple	= CISTPL_CONFIG;
+	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+	tuple.TupleData		= bf;
+	tuple.TupleDataMax	= sizeof(bf);
+	tuple.TupleOffset	= 0;
+	CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+	CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+	link->conf.ConfigBase	= parse.config.base;
+	link->conf.Present	= parse.config.rmask[0];
+
+	/* Configure card */
+	link->state |= DEV_CONFIG;
+
+	/* Try allocating IO ports.  This tries a few fixed addresses.  If you
+	 * want, you can also read the card's config table to pick addresses --
+	 * see the serial driver for an example. */
+
+	for (j = 0x280; j < 0x400; j += 0x20) {
+		/* The '^0x300' is so that we probe 0x300-0x3ff first, then
+		 * 0x200-0x2ff, and so on, because this seems safer */
+		link->io.BasePort1 = j;
+		link->io.BasePort2 = link->io.BasePort1 + 0x10;
+		i = pcmcia_request_io(link->handle, &link->io);
+		if (i == CS_SUCCESS)
+			break;
+	}
+	if (i != CS_SUCCESS) {
+		cs_error(link->handle, RequestIO, i);
+		goto failed;
+	}
+
+	/* Now allocate an interrupt line. Note that this does not actually
+	 * assign a handler to the interrupt. */
+
+	CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
+
+	/* This actually configures the PCMCIA socket -- setting up the I/O
+	 * windows and the interrupt mapping.  */
+
+	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+
+	dev->irq = link->irq.AssignedIRQ;
+	dev->base_addr = link->io.BasePort1;
+	SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+	if (register_netdev(dev)) {
+		printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
+		goto failed;
+	}
+
+	SET_MODULE_OWNER(dev);
+
+	this = dev->priv;
+	/*
+	 * At this point, the dev_node_t structure(s) should be initialized and
+	 * arranged in a linked list at link->dev.
+	 */
+	link->dev = &this->node;
+	link->state &= ~DEV_CONFIG_PENDING;
+
+	this->base_addr = dev->base_addr;
+
+	if (!wl3501_get_flash_mac_addr(this)) {
+		printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
+		       dev->name);
+		goto failed;
+	}
+	strcpy(this->node.dev_name, dev->name);
+
+	/* print probe information */
+	printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, MAC addr in flash ROM:",
+	       dev->name, this->base_addr, (int)dev->irq);
+	for (i = 0; i < 6; i++) {
+		dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
+		printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
+	}
+	printk("\n");
+	/*
+	 * Initialize card parameters - added by jss
+	 */
+	this->net_type		= IW_MODE_INFRA;
+	this->bss_cnt		= 0;
+	this->join_sta_bss	= 0;
+	this->adhoc_times	= 0;
+	iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
+				 "ANY", 3);
+	this->card_name[0]	= '\0';
+	this->firmware_date[0]	= '\0';
+	this->rssi		= 255;
+	this->chan		= iw_default_channel(this->reg_domain);
+	strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
+	spin_lock_init(&this->lock);
+	init_waitqueue_head(&this->wait);
+	netif_start_queue(dev);
+	goto out;
+cs_failed:
+	cs_error(link->handle, last_fn, last_ret);
+failed:
+	wl3501_release(link);
+out:
+	return;
+}
+
+/**
+ * wl3501_release - unregister the net, release PCMCIA configuration
+ * @arg - link
+ *
+ * After a card is removed, wl3501_release() will unregister the net device,
+ * and release the PCMCIA configuration.  If the device is still open, this
+ * will be postponed until it is closed.
+ */
+static void wl3501_release(dev_link_t *link)
+{
+	struct net_device *dev = link->priv;
+
+	/* Unlink the device chain */
+	if (link->dev) {
+		unregister_netdev(dev);
+		link->dev = NULL;
+	}
+
+	/* Don't bother checking to see if these succeed or not */
+	pcmcia_release_configuration(link->handle);
+	pcmcia_release_io(link->handle, &link->io);
+	pcmcia_release_irq(link->handle, &link->irq);
+	link->state &= ~DEV_CONFIG;
+}
+
+/**
+ * wl3501_event - The card status event handler
+ * @event - event
+ * @pri - priority
+ * @args - arguments for this event
+ *
+ * The card status event handler. Mostly, this schedules other stuff to run
+ * after an event is received. A CARD_REMOVAL event also sets some flags to
+ * discourage the net drivers from trying to talk to the card any more.
+ *
+ * When a CARD_REMOVAL event is received, we immediately set a flag to block
+ * future accesses to this device. All the functions that actually access the
+ * device should check this flag to make sure the card is still present.
+ */
+static int wl3501_event(event_t event, int pri, event_callback_args_t *args)
+{
+	dev_link_t *link = args->client_data;
+	struct net_device *dev = link->priv;
+
+	switch (event) {
+	case CS_EVENT_CARD_REMOVAL:
+		link->state &= ~DEV_PRESENT;
+		if (link->state & DEV_CONFIG) {
+			while (link->open > 0)
+				wl3501_close(dev);
+			netif_device_detach(dev);
+			wl3501_release(link);
+		}
+		break;
+	case CS_EVENT_CARD_INSERTION:
+		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+		wl3501_config(link);
+		break;
+	case CS_EVENT_PM_SUSPEND:
+		link->state |= DEV_SUSPEND;
+		wl3501_pwr_mgmt(dev->priv, WL3501_SUSPEND);
+		/* Fall through... */
+	case CS_EVENT_RESET_PHYSICAL:
+		if (link->state & DEV_CONFIG) {
+			if (link->open)
+				netif_device_detach(dev);
+			pcmcia_release_configuration(link->handle);
+		}
+		break;
+	case CS_EVENT_PM_RESUME:
+		link->state &= ~DEV_SUSPEND;
+		wl3501_pwr_mgmt(dev->priv, WL3501_RESUME);
+		/* Fall through... */
+	case CS_EVENT_CARD_RESET:
+		if (link->state & DEV_CONFIG) {
+			pcmcia_request_configuration(link->handle, &link->conf);
+			if (link->open) {
+				wl3501_reset(dev);
+				netif_device_attach(dev);
+			}
+		}
+		break;
+	}
+	return 0;
+}
+
+static struct pcmcia_driver wl3501_driver = {
+	.owner          = THIS_MODULE,
+	.drv            = {
+		.name   = "wl3501_cs",
+	},
+	.attach         = wl3501_attach,
+	.detach         = wl3501_detach,
+};
+
+static int __init wl3501_init_module(void)
+{
+	return pcmcia_register_driver(&wl3501_driver);
+}
+
+static void __exit wl3501_exit_module(void)
+{
+	dprintk(0, ": unloading");
+	pcmcia_unregister_driver(&wl3501_driver);
+	BUG_ON(wl3501_dev_list != NULL);
+}
+
+module_init(wl3501_init_module);
+module_exit(wl3501_exit_module);
+
+MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
+	      "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
+	      "Gustavo Niemeyer <niemeyer@conectiva.com>");
+MODULE_DESCRIPTION("Planet wl3501 wireless driver");
+MODULE_LICENSE("GPL");