1/*
   2 * WL3501 Wireless LAN PCMCIA Card Driver for Linux
   3 * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
   4 * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   5 * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
   6 *
   7 * References used by Fox Chen while writing the original driver for 2.0.30:
   8 *
   9 *   1. WL24xx packet drivers (tooasm.asm)
  10 *   2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
  11 *   3. IEEE 802.11
  12 *   4. Linux network driver (/usr/src/linux/drivers/net)
  13 *   5. ISA card driver - wl24.c
  14 *   6. Linux PCMCIA skeleton driver - skeleton.c
  15 *   7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
  16 *
  17 * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
  18 *   1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
  19 *      rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
  20 *      (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
  21 *       ETHER/IP/UDP/TCP header, and acknowledgement overhead)
  22 *
  23 * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
  24 * 173 Kbytes/s in TCP.
  25 *
  26 * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
  27 * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
  28 */
  29
  30#include <linux/delay.h>
  31#include <linux/types.h>
  32#include <linux/interrupt.h>
  33#include <linux/in.h>
  34#include <linux/kernel.h>
  35#include <linux/module.h>
  36#include <linux/fcntl.h>
  37#include <linux/if_arp.h>
  38#include <linux/ioport.h>
  39#include <linux/netdevice.h>
  40#include <linux/etherdevice.h>
  41#include <linux/skbuff.h>
  42#include <linux/slab.h>
  43#include <linux/string.h>
  44#include <linux/wireless.h>
  45#include <net/cfg80211.h>
  46
  47#include <net/iw_handler.h>
  48
  49#include <pcmcia/cistpl.h>
  50#include <pcmcia/cisreg.h>
  51#include <pcmcia/ds.h>
  52
  53#include <asm/io.h>
  54#include <linux/uaccess.h>
  55
  56#include "wl3501.h"
  57
  58#ifndef __i386__
  59#define slow_down_io()
  60#endif
  61
  62/* For rough constant delay */
  63#define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  64
  65
  66
  67#define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  68#define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  69#define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  70
  71#define WL3501_RELEASE_TIMEOUT (25 * HZ)
  72#define WL3501_MAX_ADHOC_TRIES 16
  73
  74#define WL3501_RESUME	0
  75#define WL3501_SUSPEND	1
  76
  77static int wl3501_config(struct pcmcia_device *link);
  78static void wl3501_release(struct pcmcia_device *link);
  79
  80static const struct {
  81	int reg_domain;
  82	int min, max, deflt;
  83} iw_channel_table[] = {
  84	{
  85		.reg_domain = IW_REG_DOMAIN_FCC,
  86		.min	    = 1,
  87		.max	    = 11,
  88		.deflt	    = 1,
  89	},
  90	{
  91		.reg_domain = IW_REG_DOMAIN_DOC,
  92		.min	    = 1,
  93		.max	    = 11,
  94		.deflt	    = 1,
  95	},
  96	{
  97		.reg_domain = IW_REG_DOMAIN_ETSI,
  98		.min	    = 1,
  99		.max	    = 13,
 100		.deflt	    = 1,
 101	},
 102	{
 103		.reg_domain = IW_REG_DOMAIN_SPAIN,
 104		.min	    = 10,
 105		.max	    = 11,
 106		.deflt	    = 10,
 107	},
 108	{
 109		.reg_domain = IW_REG_DOMAIN_FRANCE,
 110		.min	    = 10,
 111		.max	    = 13,
 112		.deflt	    = 10,
 113	},
 114	{
 115		.reg_domain = IW_REG_DOMAIN_MKK,
 116		.min	    = 14,
 117		.max	    = 14,
 118		.deflt	    = 14,
 119	},
 120	{
 121		.reg_domain = IW_REG_DOMAIN_MKK1,
 122		.min	    = 1,
 123		.max	    = 14,
 124		.deflt	    = 1,
 125	},
 126	{
 127		.reg_domain = IW_REG_DOMAIN_ISRAEL,
 128		.min	    = 3,
 129		.max	    = 9,
 130		.deflt	    = 9,
 131	},
 132};
 133
 134/**
 135 * iw_valid_channel - validate channel in regulatory domain
 136 * @reg_comain - regulatory domain
 137 * @channel - channel to validate
 138 *
 139 * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 140 */
 141static int iw_valid_channel(int reg_domain, int channel)
 142{
 143	int i, rc = 0;
 144
 145	for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 146		if (reg_domain == iw_channel_table[i].reg_domain) {
 147			rc = channel >= iw_channel_table[i].min &&
 148			     channel <= iw_channel_table[i].max;
 149			break;
 150		}
 151	return rc;
 152}
 153
 154/**
 155 * iw_default_channel - get default channel for a regulatory domain
 156 * @reg_comain - regulatory domain
 157 *
 158 * Returns the default channel for a regulatory domain
 159 */
 160static int iw_default_channel(int reg_domain)
 161{
 162	int i, rc = 1;
 163
 164	for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 165		if (reg_domain == iw_channel_table[i].reg_domain) {
 166			rc = iw_channel_table[i].deflt;
 167			break;
 168		}
 169	return rc;
 170}
 171
 172static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 173				     struct iw_mgmt_info_element *el,
 174				     void *value, int len)
 175{
 176	el->id  = id;
 177	el->len = len;
 178	memcpy(el->data, value, len);
 179}
 180
 181static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 182				      struct iw_mgmt_info_element *from)
 183{
 184	iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 185}
 186
 187static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 188{
 189	wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 190}
 191
 192/*
 193 * Get Ethernet MAC address.
 194 *
 195 * WARNING: We switch to FPAGE0 and switc back again.
 196 *          Making sure there is no other WL function beening called by ISR.
 197 */
 198static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 199{
 200	int base_addr = this->base_addr;
 201
 202	/* get MAC addr */
 203	wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 204	wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL);	/* LMAL */
 205	wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);	/* LMAH */
 206
 207	/* wait for reading EEPROM */
 208	WL3501_NOPLOOP(100);
 209	this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 210	WL3501_NOPLOOP(100);
 211	this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 212	WL3501_NOPLOOP(100);
 213	this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 214	WL3501_NOPLOOP(100);
 215	this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 216	WL3501_NOPLOOP(100);
 217	this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 218	WL3501_NOPLOOP(100);
 219	this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 220	WL3501_NOPLOOP(100);
 221	this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 222	WL3501_NOPLOOP(100);
 223	wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 224	wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 225	wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 226	WL3501_NOPLOOP(100);
 227	this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 228	WL3501_NOPLOOP(100);
 229	this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 230	/* switch to SRAM Page 0 (for safety) */
 231	wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 232
 233	/* The MAC addr should be 00:60:... */
 234	return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 235}
 236
 237/**
 238 * wl3501_set_to_wla - Move 'size' bytes from PC to card
 239 * @dest: Card addressing space
 240 * @src: PC addressing space
 241 * @size: Bytes to move
 242 *
 243 * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 244 */
 245static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 246			      int size)
 247{
 248	/* switch to SRAM Page 0 */
 249	wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 250						   WL3501_BSS_SPAGE0);
 251	/* set LMAL and LMAH */
 252	wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 253	wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 254
 255	/* rep out to Port A */
 256	wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 257}
 258
 259/**
 260 * wl3501_get_from_wla - Move 'size' bytes from card to PC
 261 * @src: Card addressing space
 262 * @dest: PC addressing space
 263 * @size: Bytes to move
 264 *
 265 * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 266 */
 267static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 268				int size)
 269{
 270	/* switch to SRAM Page 0 */
 271	wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 272						  WL3501_BSS_SPAGE0);
 273	/* set LMAL and LMAH */
 274	wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 275	wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 276
 277	/* rep get from Port A */
 278	insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 279}
 280
 281/*
 282 * Get/Allocate a free Tx Data Buffer
 283 *
 284 *  *--------------*-----------------*----------------------------------*
 285 *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 286 *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 287 *  *--------------*-----------------*----------------------------------*
 288 *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 289 *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 290 *
 291 * Return = Position in Card
 292 */
 293static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 294{
 295	u16 next, blk_cnt = 0, zero = 0;
 296	u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 297	u16 ret = 0;
 298
 299	if (full_len > this->tx_buffer_cnt * 254)
 300		goto out;
 301	ret = this->tx_buffer_head;
 302	while (full_len) {
 303		if (full_len < 254)
 304			full_len = 0;
 305		else
 306			full_len -= 254;
 307		wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 308				    sizeof(next));
 309		if (!full_len)
 310			wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 311					  sizeof(zero));
 312		this->tx_buffer_head = next;
 313		blk_cnt++;
 314		/* if buffer is not enough */
 315		if (!next && full_len) {
 316			this->tx_buffer_head = ret;
 317			ret = 0;
 318			goto out;
 319		}
 320	}
 321	this->tx_buffer_cnt -= blk_cnt;
 322out:
 323	return ret;
 324}
 325
 326/*
 327 * Free an allocated Tx Buffer. ptr must be correct position.
 328 */
 329static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 330{
 331	/* check if all space is not free */
 332	if (!this->tx_buffer_head)
 333		this->tx_buffer_head = ptr;
 334	else
 335		wl3501_set_to_wla(this, this->tx_buffer_tail,
 336				  &ptr, sizeof(ptr));
 337	while (ptr) {
 338		u16 next;
 339
 340		this->tx_buffer_cnt++;
 341		wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 342		this->tx_buffer_tail = ptr;
 343		ptr = next;
 344	}
 345}
 346
 347static int wl3501_esbq_req_test(struct wl3501_card *this)
 348{
 349	u8 tmp = 0;
 350
 351	wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 352	return tmp & 0x80;
 353}
 354
 355static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 356{
 357	u16 tmp = 0;
 358
 359	wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 360	wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 361	this->esbq_req_head += 4;
 362	if (this->esbq_req_head >= this->esbq_req_end)
 363		this->esbq_req_head = this->esbq_req_start;
 364}
 365
 366static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 367{
 368	int rc = -EIO;
 369
 370	if (wl3501_esbq_req_test(this)) {
 371		u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 372		if (ptr) {
 373			wl3501_set_to_wla(this, ptr, sig, sig_size);
 374			wl3501_esbq_req(this, &ptr);
 375			rc = 0;
 376		}
 377	}
 378	return rc;
 379}
 380
 381static int wl3501_request_mib(struct wl3501_card *this, u8 index, void *bf)
 
 382{
 383	struct wl3501_get_req sig = {
 384		.sig_id	    = WL3501_SIG_GET_REQ,
 385		.mib_attrib = index,
 386	};
 387	unsigned long flags;
 388	int rc = -EIO;
 389
 390	spin_lock_irqsave(&this->lock, flags);
 391	if (wl3501_esbq_req_test(this)) {
 392		u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 393		if (ptr) {
 394			wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 395			wl3501_esbq_req(this, &ptr);
 396			this->sig_get_confirm.mib_status = 255;
 397			rc = 0;
 
 
 
 
 
 
 398		}
 399	}
 400	spin_unlock_irqrestore(&this->lock, flags);
 401
 402	return rc;
 403}
 404
 405static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 406				void *bf, int size)
 407{
 408	int rc;
 409
 410	rc = wl3501_request_mib(this, index, bf);
 411	if (rc)
 412		return rc;
 413
 414	rc = wait_event_interruptible(this->wait,
 415		this->sig_get_confirm.mib_status != 255);
 416	if (rc)
 417		return rc;
 418
 419	memcpy(bf, this->sig_get_confirm.mib_value, size);
 420	return 0;
 421}
 422
 423static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 424{
 425	struct wl3501_pwr_mgmt_req sig = {
 426		.sig_id		= WL3501_SIG_PWR_MGMT_REQ,
 427		.pwr_save	= suspend,
 428		.wake_up	= !suspend,
 429		.receive_dtims	= 10,
 430	};
 431	unsigned long flags;
 432	int rc = -EIO;
 433
 434	spin_lock_irqsave(&this->lock, flags);
 435	if (wl3501_esbq_req_test(this)) {
 436		u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 437		if (ptr) {
 438			wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 439			wl3501_esbq_req(this, &ptr);
 440			this->sig_pwr_mgmt_confirm.status = 255;
 441			spin_unlock_irqrestore(&this->lock, flags);
 442			rc = wait_event_interruptible(this->wait,
 443				this->sig_pwr_mgmt_confirm.status != 255);
 444			printk(KERN_INFO "%s: %s status=%d\n", __func__,
 445			       suspend ? "suspend" : "resume",
 446			       this->sig_pwr_mgmt_confirm.status);
 447			goto out;
 448		}
 449	}
 450	spin_unlock_irqrestore(&this->lock, flags);
 451out:
 452	return rc;
 453}
 454
 455/**
 456 * wl3501_send_pkt - Send a packet.
 457 * @this - card
 458 *
 459 * Send a packet.
 460 *
 461 * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 462 *                                   data[6] - data[11] is Src MAC Addr)
 463 * Ref: IEEE 802.11
 464 */
 465static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 466{
 467	u16 bf, sig_bf, next, tmplen, pktlen;
 468	struct wl3501_md_req sig = {
 469		.sig_id = WL3501_SIG_MD_REQ,
 470	};
 471	u8 *pdata = (char *)data;
 472	int rc = -EIO;
 473
 474	if (wl3501_esbq_req_test(this)) {
 475		sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 476		rc = -ENOMEM;
 477		if (!sig_bf)	/* No free buffer available */
 478			goto out;
 479		bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 480		if (!bf) {
 481			/* No free buffer available */
 482			wl3501_free_tx_buffer(this, sig_bf);
 483			goto out;
 484		}
 485		rc = 0;
 486		memcpy(&sig.daddr[0], pdata, 12);
 487		pktlen = len - 12;
 488		pdata += 12;
 489		sig.data = bf;
 490		if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 491			u8 addr4[ETH_ALEN] = {
 492				[0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 493			};
 494
 495			wl3501_set_to_wla(this, bf + 2 +
 496					  offsetof(struct wl3501_tx_hdr, addr4),
 497					  addr4, sizeof(addr4));
 498			sig.size = pktlen + 24 + 4 + 6;
 499			if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 500				tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 501				pktlen -= tmplen;
 502			} else {
 503				tmplen = pktlen;
 504				pktlen = 0;
 505			}
 506			wl3501_set_to_wla(this,
 507					  bf + 2 + sizeof(struct wl3501_tx_hdr),
 508					  pdata, tmplen);
 509			pdata += tmplen;
 510			wl3501_get_from_wla(this, bf, &next, sizeof(next));
 511			bf = next;
 512		} else {
 513			sig.size = pktlen + 24 + 4 - 2;
 514			pdata += 2;
 515			pktlen -= 2;
 516			if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 517				tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 518				pktlen -= tmplen;
 519			} else {
 520				tmplen = pktlen;
 521				pktlen = 0;
 522			}
 523			wl3501_set_to_wla(this, bf + 2 +
 524					  offsetof(struct wl3501_tx_hdr, addr4),
 525					  pdata, tmplen);
 526			pdata += tmplen;
 527			wl3501_get_from_wla(this, bf, &next, sizeof(next));
 528			bf = next;
 529		}
 530		while (pktlen > 0) {
 531			if (pktlen > 254) {
 532				tmplen = 254;
 533				pktlen -= 254;
 534			} else {
 535				tmplen = pktlen;
 536				pktlen = 0;
 537			}
 538			wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 539			pdata += tmplen;
 540			wl3501_get_from_wla(this, bf, &next, sizeof(next));
 541			bf = next;
 542		}
 543		wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 544		wl3501_esbq_req(this, &sig_bf);
 545	}
 546out:
 547	return rc;
 548}
 549
 550static int wl3501_mgmt_resync(struct wl3501_card *this)
 551{
 552	struct wl3501_resync_req sig = {
 553		.sig_id = WL3501_SIG_RESYNC_REQ,
 554	};
 555
 556	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 557}
 558
 559static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 560{
 561	return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 562						 WL3501_NET_TYPE_ADHOC;
 563}
 564
 565static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 566{
 567	return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 568						 WL3501_MGMT_CAPABILITY_IBSS;
 569}
 570
 571static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 572{
 573	struct wl3501_scan_req sig = {
 574		.sig_id		= WL3501_SIG_SCAN_REQ,
 575		.scan_type	= WL3501_SCAN_TYPE_ACTIVE,
 576		.probe_delay	= 0x10,
 577		.min_chan_time	= chan_time,
 578		.max_chan_time	= chan_time,
 579		.bss_type	= wl3501_fw_bss_type(this),
 580	};
 581
 582	this->bss_cnt = this->join_sta_bss = 0;
 583	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 584}
 585
 586static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 587{
 588	struct wl3501_join_req sig = {
 589		.sig_id		  = WL3501_SIG_JOIN_REQ,
 590		.timeout	  = 10,
 591		.ds_pset = {
 592			.el = {
 593				.id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 594				.len = 1,
 595			},
 596			.chan	= this->chan,
 597		},
 598	};
 599
 600	memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 601	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 602}
 603
 604static int wl3501_mgmt_start(struct wl3501_card *this)
 605{
 606	struct wl3501_start_req sig = {
 607		.sig_id			= WL3501_SIG_START_REQ,
 608		.beacon_period		= 400,
 609		.dtim_period		= 1,
 610		.ds_pset = {
 611			.el = {
 612				.id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 613				.len = 1,
 614			},
 615			.chan	= this->chan,
 616		},
 617		.bss_basic_rset	= {
 618			.el = {
 619				.id	= IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 620				.len = 2,
 621			},
 622			.data_rate_labels = {
 623				[0] = IW_MGMT_RATE_LABEL_MANDATORY |
 624				      IW_MGMT_RATE_LABEL_1MBIT,
 625				[1] = IW_MGMT_RATE_LABEL_MANDATORY |
 626				      IW_MGMT_RATE_LABEL_2MBIT,
 627			},
 628		},
 629		.operational_rset	= {
 630			.el = {
 631				.id	= IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 632				.len = 2,
 633			},
 634			.data_rate_labels = {
 635				[0] = IW_MGMT_RATE_LABEL_MANDATORY |
 636				      IW_MGMT_RATE_LABEL_1MBIT,
 637				[1] = IW_MGMT_RATE_LABEL_MANDATORY |
 638				      IW_MGMT_RATE_LABEL_2MBIT,
 639			},
 640		},
 641		.ibss_pset		= {
 642			.el = {
 643				.id	 = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 644				.len     = 2,
 645			},
 646			.atim_window = 10,
 647		},
 648		.bss_type		= wl3501_fw_bss_type(this),
 649		.cap_info		= wl3501_fw_cap_info(this),
 650	};
 651
 652	iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 653	iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 654	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 655}
 656
 657static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 658{
 659	u16 i = 0;
 660	int matchflag = 0;
 661	struct wl3501_scan_confirm sig;
 662
 663	pr_debug("entry");
 664	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 665	if (sig.status == WL3501_STATUS_SUCCESS) {
 666		pr_debug("success");
 667		if ((this->net_type == IW_MODE_INFRA &&
 668		     (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 669		    (this->net_type == IW_MODE_ADHOC &&
 670		     (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 671		    this->net_type == IW_MODE_AUTO) {
 672			if (!this->essid.el.len)
 673				matchflag = 1;
 674			else if (this->essid.el.len == 3 &&
 675				 !memcmp(this->essid.essid, "ANY", 3))
 676				matchflag = 1;
 677			else if (this->essid.el.len != sig.ssid.el.len)
 678				matchflag = 0;
 679			else if (memcmp(this->essid.essid, sig.ssid.essid,
 680					this->essid.el.len))
 681				matchflag = 0;
 682			else
 683				matchflag = 1;
 684			if (matchflag) {
 685				for (i = 0; i < this->bss_cnt; i++) {
 686					if (ether_addr_equal_unaligned(this->bss_set[i].bssid, sig.bssid)) {
 687						matchflag = 0;
 688						break;
 689					}
 690				}
 691			}
 692			if (matchflag && (i < 20)) {
 693				memcpy(&this->bss_set[i].beacon_period,
 694				       &sig.beacon_period, 73);
 695				this->bss_cnt++;
 696				this->rssi = sig.rssi;
 697			}
 698		}
 699	} else if (sig.status == WL3501_STATUS_TIMEOUT) {
 700		pr_debug("timeout");
 701		this->join_sta_bss = 0;
 702		for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 703			if (!wl3501_mgmt_join(this, i))
 704				break;
 705		this->join_sta_bss = i;
 706		if (this->join_sta_bss == this->bss_cnt) {
 707			if (this->net_type == IW_MODE_INFRA)
 708				wl3501_mgmt_scan(this, 100);
 709			else {
 710				this->adhoc_times++;
 711				if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 712					wl3501_mgmt_start(this);
 713				else
 714					wl3501_mgmt_scan(this, 100);
 715			}
 716		}
 717	}
 718}
 719
 720/**
 721 * wl3501_block_interrupt - Mask interrupt from SUTRO
 722 * @this - card
 723 *
 724 * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 725 * Return: 1 if interrupt is originally enabled
 726 */
 727static int wl3501_block_interrupt(struct wl3501_card *this)
 728{
 729	u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 730	u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 731			WL3501_GCR_ENECINT));
 732
 733	wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 734	return old & WL3501_GCR_ENECINT;
 735}
 736
 737/**
 738 * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 739 * @this - card
 740 *
 741 * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 742 * Return: 1 if interrupt is originally enabled
 743 */
 744static int wl3501_unblock_interrupt(struct wl3501_card *this)
 745{
 746	u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 747	u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 748		  WL3501_GCR_ENECINT;
 749
 750	wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 751	return old & WL3501_GCR_ENECINT;
 752}
 753
 754/**
 755 * wl3501_receive - Receive data from Receive Queue.
 756 *
 757 * Receive data from Receive Queue.
 758 *
 759 * @this: card
 760 * @bf: address of host
 761 * @size: size of buffer.
 762 */
 763static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 764{
 765	u16 next_addr, next_addr1;
 766	u8 *data = bf + 12;
 767
 768	size -= 12;
 769	wl3501_get_from_wla(this, this->start_seg + 2,
 770			    &next_addr, sizeof(next_addr));
 771	if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 772		wl3501_get_from_wla(this,
 773				    this->start_seg +
 774					sizeof(struct wl3501_rx_hdr), data,
 775				    WL3501_BLKSZ -
 776					sizeof(struct wl3501_rx_hdr));
 777		size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 778		data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 779	} else {
 780		wl3501_get_from_wla(this,
 781				    this->start_seg +
 782					sizeof(struct wl3501_rx_hdr),
 783				    data, size);
 784		size = 0;
 785	}
 786	while (size > 0) {
 787		if (size > WL3501_BLKSZ - 5) {
 788			wl3501_get_from_wla(this, next_addr + 5, data,
 789					    WL3501_BLKSZ - 5);
 790			size -= WL3501_BLKSZ - 5;
 791			data += WL3501_BLKSZ - 5;
 792			wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 793					    sizeof(next_addr1));
 794			next_addr = next_addr1;
 795		} else {
 796			wl3501_get_from_wla(this, next_addr + 5, data, size);
 797			size = 0;
 798		}
 799	}
 800	return 0;
 801}
 802
 803static void wl3501_esbq_req_free(struct wl3501_card *this)
 804{
 805	u8 tmp;
 806	u16 addr;
 807
 808	if (this->esbq_req_head == this->esbq_req_tail)
 809		goto out;
 810	wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 811	if (!(tmp & 0x80))
 812		goto out;
 813	wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 814	wl3501_free_tx_buffer(this, addr);
 815	this->esbq_req_tail += 4;
 816	if (this->esbq_req_tail >= this->esbq_req_end)
 817		this->esbq_req_tail = this->esbq_req_start;
 818out:
 819	return;
 820}
 821
 822static int wl3501_esbq_confirm(struct wl3501_card *this)
 823{
 824	u8 tmp;
 825
 826	wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 827	return tmp & 0x80;
 828}
 829
 830static void wl3501_online(struct net_device *dev)
 831{
 832	struct wl3501_card *this = netdev_priv(dev);
 833
 834	printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 835	       dev->name, this->bssid);
 836	netif_wake_queue(dev);
 837}
 838
 839static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 840{
 841	u8 tmp = 0;
 842
 843	wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 844	this->esbq_confirm += 4;
 845	if (this->esbq_confirm >= this->esbq_confirm_end)
 846		this->esbq_confirm = this->esbq_confirm_start;
 847}
 848
 849static int wl3501_mgmt_auth(struct wl3501_card *this)
 850{
 851	struct wl3501_auth_req sig = {
 852		.sig_id	 = WL3501_SIG_AUTH_REQ,
 853		.type	 = WL3501_SYS_TYPE_OPEN,
 854		.timeout = 1000,
 855	};
 856
 857	pr_debug("entry");
 858	memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 859	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 860}
 861
 862static int wl3501_mgmt_association(struct wl3501_card *this)
 863{
 864	struct wl3501_assoc_req sig = {
 865		.sig_id		 = WL3501_SIG_ASSOC_REQ,
 866		.timeout	 = 1000,
 867		.listen_interval = 5,
 868		.cap_info	 = this->cap_info,
 869	};
 870
 871	pr_debug("entry");
 872	memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 873	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 874}
 875
 876static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 877{
 878	struct wl3501_card *this = netdev_priv(dev);
 879	struct wl3501_join_confirm sig;
 880
 881	pr_debug("entry");
 882	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 883	if (sig.status == WL3501_STATUS_SUCCESS) {
 884		if (this->net_type == IW_MODE_INFRA) {
 885			if (this->join_sta_bss < this->bss_cnt) {
 886				const int i = this->join_sta_bss;
 887				memcpy(this->bssid,
 888				       this->bss_set[i].bssid, ETH_ALEN);
 889				this->chan = this->bss_set[i].ds_pset.chan;
 890				iw_copy_mgmt_info_element(&this->keep_essid.el,
 891						     &this->bss_set[i].ssid.el);
 892				wl3501_mgmt_auth(this);
 893			}
 894		} else {
 895			const int i = this->join_sta_bss;
 896
 897			memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 898			this->chan = this->bss_set[i].ds_pset.chan;
 899			iw_copy_mgmt_info_element(&this->keep_essid.el,
 900						  &this->bss_set[i].ssid.el);
 901			wl3501_online(dev);
 902		}
 903	} else {
 904		int i;
 905		this->join_sta_bss++;
 906		for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 907			if (!wl3501_mgmt_join(this, i))
 908				break;
 909		this->join_sta_bss = i;
 910		if (this->join_sta_bss == this->bss_cnt) {
 911			if (this->net_type == IW_MODE_INFRA)
 912				wl3501_mgmt_scan(this, 100);
 913			else {
 914				this->adhoc_times++;
 915				if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 916					wl3501_mgmt_start(this);
 917				else
 918					wl3501_mgmt_scan(this, 100);
 919			}
 920		}
 921	}
 922}
 923
 924static inline void wl3501_alarm_interrupt(struct net_device *dev,
 925					  struct wl3501_card *this)
 926{
 927	if (this->net_type == IW_MODE_INFRA) {
 928		printk(KERN_INFO "Wireless LAN offline\n");
 929		netif_stop_queue(dev);
 930		wl3501_mgmt_resync(this);
 931	}
 932}
 933
 934static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 935					       struct wl3501_card *this,
 936					       u16 addr)
 937{
 938	struct wl3501_md_confirm sig;
 939
 940	pr_debug("entry");
 941	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 942	wl3501_free_tx_buffer(this, sig.data);
 943	if (netif_queue_stopped(dev))
 944		netif_wake_queue(dev);
 945}
 946
 947static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 948					   struct wl3501_card *this, u16 addr)
 949{
 950	struct wl3501_md_ind sig;
 951	struct sk_buff *skb;
 952	u8 rssi, addr4[ETH_ALEN];
 953	u16 pkt_len;
 954
 955	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 956	this->start_seg = sig.data;
 957	wl3501_get_from_wla(this,
 958			    sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 959			    &rssi, sizeof(rssi));
 960	this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 961
 962	wl3501_get_from_wla(this,
 963			    sig.data +
 964				offsetof(struct wl3501_rx_hdr, addr4),
 965			    &addr4, sizeof(addr4));
 966	if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 967	      addr4[2] == 0x03 && addr4[4] == 0x00)) {
 968		printk(KERN_INFO "Unsupported packet type!\n");
 969		return;
 970	}
 971	pkt_len = sig.size + 12 - 24 - 4 - 6;
 972
 973	skb = dev_alloc_skb(pkt_len + 5);
 974
 975	if (!skb) {
 976		printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
 977		       dev->name, pkt_len);
 978		dev->stats.rx_dropped++;
 979	} else {
 980		skb->dev = dev;
 981		skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
 982		skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
 983		wl3501_receive(this, skb->data, pkt_len);
 984		skb_put(skb, pkt_len);
 985		skb->protocol	= eth_type_trans(skb, dev);
 986		dev->stats.rx_packets++;
 987		dev->stats.rx_bytes += skb->len;
 988		netif_rx(skb);
 989	}
 990}
 991
 992static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
 993						u16 addr, void *sig, int size)
 994{
 995	pr_debug("entry");
 996	wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
 997			    sizeof(this->sig_get_confirm));
 998	wake_up(&this->wait);
 999}
1000
1001static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1002						  struct wl3501_card *this,
1003						  u16 addr)
1004{
1005	struct wl3501_start_confirm sig;
1006
1007	pr_debug("entry");
1008	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1009	if (sig.status == WL3501_STATUS_SUCCESS)
1010		netif_wake_queue(dev);
1011}
1012
1013static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1014						  u16 addr)
1015{
1016	struct wl3501_card *this = netdev_priv(dev);
1017	struct wl3501_assoc_confirm sig;
1018
1019	pr_debug("entry");
1020	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1021
1022	if (sig.status == WL3501_STATUS_SUCCESS)
1023		wl3501_online(dev);
1024}
1025
1026static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1027						 u16 addr)
1028{
1029	struct wl3501_auth_confirm sig;
1030
1031	pr_debug("entry");
1032	wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1033
1034	if (sig.status == WL3501_STATUS_SUCCESS)
1035		wl3501_mgmt_association(this);
1036	else
1037		wl3501_mgmt_resync(this);
1038}
1039
1040static inline void wl3501_rx_interrupt(struct net_device *dev)
1041{
1042	int morepkts;
1043	u16 addr;
1044	u8 sig_id;
1045	struct wl3501_card *this = netdev_priv(dev);
1046
1047	pr_debug("entry");
1048loop:
1049	morepkts = 0;
1050	if (!wl3501_esbq_confirm(this))
1051		goto free;
1052	wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1053	wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1054
1055	switch (sig_id) {
1056	case WL3501_SIG_DEAUTH_IND:
1057	case WL3501_SIG_DISASSOC_IND:
1058	case WL3501_SIG_ALARM:
1059		wl3501_alarm_interrupt(dev, this);
1060		break;
1061	case WL3501_SIG_MD_CONFIRM:
1062		wl3501_md_confirm_interrupt(dev, this, addr);
1063		break;
1064	case WL3501_SIG_MD_IND:
1065		wl3501_md_ind_interrupt(dev, this, addr);
1066		break;
1067	case WL3501_SIG_GET_CONFIRM:
1068		wl3501_get_confirm_interrupt(this, addr,
1069					     &this->sig_get_confirm,
1070					     sizeof(this->sig_get_confirm));
1071		break;
1072	case WL3501_SIG_PWR_MGMT_CONFIRM:
1073		wl3501_get_confirm_interrupt(this, addr,
1074					     &this->sig_pwr_mgmt_confirm,
1075					    sizeof(this->sig_pwr_mgmt_confirm));
1076		break;
1077	case WL3501_SIG_START_CONFIRM:
1078		wl3501_start_confirm_interrupt(dev, this, addr);
1079		break;
1080	case WL3501_SIG_SCAN_CONFIRM:
1081		wl3501_mgmt_scan_confirm(this, addr);
1082		break;
1083	case WL3501_SIG_JOIN_CONFIRM:
1084		wl3501_mgmt_join_confirm(dev, addr);
1085		break;
1086	case WL3501_SIG_ASSOC_CONFIRM:
1087		wl3501_assoc_confirm_interrupt(dev, addr);
1088		break;
1089	case WL3501_SIG_AUTH_CONFIRM:
1090		wl3501_auth_confirm_interrupt(this, addr);
1091		break;
1092	case WL3501_SIG_RESYNC_CONFIRM:
1093		wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1094		break;
1095	}
1096	wl3501_esbq_confirm_done(this);
1097	morepkts = 1;
1098	/* free request if necessary */
1099free:
1100	wl3501_esbq_req_free(this);
1101	if (morepkts)
1102		goto loop;
1103}
1104
1105static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1106{
1107	wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1108}
1109
1110/**
1111 * wl3501_interrupt - Hardware interrupt from card.
1112 * @irq - Interrupt number
1113 * @dev_id - net_device
1114 *
1115 * We must acknowledge the interrupt as soon as possible, and block the
1116 * interrupt from the same card immediately to prevent re-entry.
1117 *
1118 * Before accessing the Control_Status_Block, we must lock SUTRO first.
1119 * On the other hand, to prevent SUTRO from malfunctioning, we must
1120 * unlock the SUTRO as soon as possible.
1121 */
1122static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1123{
1124	struct net_device *dev = dev_id;
1125	struct wl3501_card *this;
1126
1127	this = netdev_priv(dev);
1128	spin_lock(&this->lock);
1129	wl3501_ack_interrupt(this);
1130	wl3501_block_interrupt(this);
1131	wl3501_rx_interrupt(dev);
1132	wl3501_unblock_interrupt(this);
1133	spin_unlock(&this->lock);
1134
1135	return IRQ_HANDLED;
1136}
1137
1138static int wl3501_reset_board(struct wl3501_card *this)
1139{
1140	u8 tmp = 0;
1141	int i, rc = 0;
1142
1143	/* Coreset */
1144	wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1145	wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1146	wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1147
1148	/* Reset SRAM 0x480 to zero */
1149	wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1150
1151	/* Start up */
1152	wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1153
1154	WL3501_NOPLOOP(1024 * 50);
1155
1156	wl3501_unblock_interrupt(this);	/* acme: was commented */
1157
1158	/* Polling Self_Test_Status */
1159	for (i = 0; i < 10000; i++) {
1160		wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1161
1162		if (tmp == 'W') {
1163			/* firmware complete all test successfully */
1164			tmp = 'A';
1165			wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1166			goto out;
1167		}
1168		WL3501_NOPLOOP(10);
1169	}
1170	printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1171	rc = -ENODEV;
1172out:
1173	return rc;
1174}
1175
1176static int wl3501_init_firmware(struct wl3501_card *this)
1177{
1178	u16 ptr, next;
1179	int rc = wl3501_reset_board(this);
1180
1181	if (rc)
1182		goto fail;
1183	this->card_name[0] = '\0';
1184	wl3501_get_from_wla(this, 0x1a00,
1185			    this->card_name, sizeof(this->card_name));
1186	this->card_name[sizeof(this->card_name) - 1] = '\0';
1187	this->firmware_date[0] = '\0';
1188	wl3501_get_from_wla(this, 0x1a40,
1189			    this->firmware_date, sizeof(this->firmware_date));
1190	this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1191	/* Switch to SRAM Page 0 */
1192	wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1193	/* Read parameter from card */
1194	wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1195	wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1196	wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1197	wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1198	wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1199	wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1200	this->esbq_req_tail	= this->esbq_req_head = this->esbq_req_start;
1201	this->esbq_req_end     += this->esbq_req_start;
1202	this->esbq_confirm	= this->esbq_confirm_start;
1203	this->esbq_confirm_end += this->esbq_confirm_start;
1204	/* Initial Tx Buffer */
1205	this->tx_buffer_cnt = 1;
1206	ptr = this->tx_buffer_head;
1207	next = ptr + WL3501_BLKSZ;
1208	while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1209		this->tx_buffer_cnt++;
1210		wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1211		ptr = next;
1212		next = ptr + WL3501_BLKSZ;
1213	}
1214	rc = 0;
1215	next = 0;
1216	wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1217	this->tx_buffer_tail = ptr;
1218out:
1219	return rc;
1220fail:
1221	printk(KERN_WARNING "%s: failed!\n", __func__);
1222	goto out;
1223}
1224
1225static int wl3501_close(struct net_device *dev)
1226{
1227	struct wl3501_card *this = netdev_priv(dev);
1228	int rc = -ENODEV;
1229	unsigned long flags;
1230	struct pcmcia_device *link;
1231	link = this->p_dev;
1232
1233	spin_lock_irqsave(&this->lock, flags);
1234	link->open--;
1235
1236	/* Stop wl3501_hard_start_xmit() from now on */
1237	netif_stop_queue(dev);
1238	wl3501_ack_interrupt(this);
1239
1240	/* Mask interrupts from the SUTRO */
1241	wl3501_block_interrupt(this);
1242
1243	rc = 0;
1244	printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1245	spin_unlock_irqrestore(&this->lock, flags);
1246	return rc;
1247}
1248
1249/**
1250 * wl3501_reset - Reset the SUTRO.
1251 * @dev - network device
1252 *
1253 * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1254 * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1255 * is running. It seems to be dangerous.
1256 */
1257static int wl3501_reset(struct net_device *dev)
1258{
1259	struct wl3501_card *this = netdev_priv(dev);
1260	int rc = -ENODEV;
1261	unsigned long flags;
1262
1263	spin_lock_irqsave(&this->lock, flags);
1264	wl3501_block_interrupt(this);
1265
1266	if (wl3501_init_firmware(this)) {
1267		printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1268		       dev->name);
1269		/* Free IRQ, and mark IRQ as unused */
1270		free_irq(dev->irq, dev);
1271		goto out;
1272	}
1273
1274	/*
1275	 * Queue has to be started only when the Card is Started
1276	 */
1277	netif_stop_queue(dev);
1278	this->adhoc_times = 0;
1279	wl3501_ack_interrupt(this);
1280	wl3501_unblock_interrupt(this);
1281	wl3501_mgmt_scan(this, 100);
1282	pr_debug("%s: device reset", dev->name);
1283	rc = 0;
1284out:
1285	spin_unlock_irqrestore(&this->lock, flags);
1286	return rc;
1287}
1288
1289static void wl3501_tx_timeout(struct net_device *dev)
1290{
 
1291	struct net_device_stats *stats = &dev->stats;
 
1292	int rc;
1293
1294	stats->tx_errors++;
 
1295	rc = wl3501_reset(dev);
 
1296	if (rc)
1297		printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1298		       dev->name, rc);
1299	else {
1300		netif_trans_update(dev); /* prevent tx timeout */
1301		netif_wake_queue(dev);
1302	}
1303}
1304
1305/*
1306 * Return : 0 - OK
1307 *	    1 - Could not transmit (dev_queue_xmit will queue it)
1308 *		and try to sent it later
1309 */
1310static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1311						struct net_device *dev)
1312{
1313	int enabled, rc;
1314	struct wl3501_card *this = netdev_priv(dev);
1315	unsigned long flags;
1316
1317	spin_lock_irqsave(&this->lock, flags);
1318	enabled = wl3501_block_interrupt(this);
1319	rc = wl3501_send_pkt(this, skb->data, skb->len);
1320	if (enabled)
1321		wl3501_unblock_interrupt(this);
1322	if (rc) {
1323		++dev->stats.tx_dropped;
1324		netif_stop_queue(dev);
1325	} else {
1326		++dev->stats.tx_packets;
1327		dev->stats.tx_bytes += skb->len;
1328		kfree_skb(skb);
1329
1330		if (this->tx_buffer_cnt < 2)
1331			netif_stop_queue(dev);
1332	}
1333	spin_unlock_irqrestore(&this->lock, flags);
1334	return NETDEV_TX_OK;
1335}
1336
1337static int wl3501_open(struct net_device *dev)
1338{
1339	int rc = -ENODEV;
1340	struct wl3501_card *this = netdev_priv(dev);
1341	unsigned long flags;
1342	struct pcmcia_device *link;
1343	link = this->p_dev;
1344
1345	spin_lock_irqsave(&this->lock, flags);
1346	if (!pcmcia_dev_present(link))
1347		goto out;
1348	netif_device_attach(dev);
1349	link->open++;
1350
1351	/* Initial WL3501 firmware */
1352	pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1353	if (wl3501_init_firmware(this))
1354		goto fail;
1355	/* Initial device variables */
1356	this->adhoc_times = 0;
1357	/* Acknowledge Interrupt, for cleaning last state */
1358	wl3501_ack_interrupt(this);
1359
1360	/* Enable interrupt from card after all */
1361	wl3501_unblock_interrupt(this);
1362	wl3501_mgmt_scan(this, 100);
1363	rc = 0;
1364	pr_debug("%s: WL3501 opened", dev->name);
1365	printk(KERN_INFO "%s: Card Name: %s\n"
1366			 "%s: Firmware Date: %s\n",
1367			 dev->name, this->card_name,
1368			 dev->name, this->firmware_date);
1369out:
1370	spin_unlock_irqrestore(&this->lock, flags);
1371	return rc;
1372fail:
1373	printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1374	goto out;
1375}
1376
1377static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1378{
1379	struct wl3501_card *this = netdev_priv(dev);
1380	struct iw_statistics *wstats = &this->wstats;
1381	u32 value; /* size checked: it is u32 */
1382
1383	memset(wstats, 0, sizeof(*wstats));
1384	wstats->status = netif_running(dev);
1385	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1386				  &value, sizeof(value)))
1387		wstats->discard.code += value;
1388	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1389				  &value, sizeof(value)))
1390		wstats->discard.code += value;
1391	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1392				  &value, sizeof(value)))
1393		wstats->discard.code += value;
1394	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1395				  &value, sizeof(value)))
1396		wstats->discard.retries	= value;
1397	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1398				  &value, sizeof(value)))
1399		wstats->discard.misc += value;
1400	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1401				  &value, sizeof(value)))
1402		wstats->discard.misc += value;
1403	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1404				  &value, sizeof(value)))
1405		wstats->discard.misc += value;
1406	if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1407				  &value, sizeof(value)))
1408		wstats->discard.misc += value;
1409	return wstats;
1410}
1411
1412/**
1413 * wl3501_detach - deletes a driver "instance"
1414 * @link - FILL_IN
1415 *
1416 * This deletes a driver "instance". The device is de-registered with Card
1417 * Services. If it has been released, all local data structures are freed.
1418 * Otherwise, the structures will be freed when the device is released.
1419 */
1420static void wl3501_detach(struct pcmcia_device *link)
1421{
1422	struct net_device *dev = link->priv;
1423
1424	/* If the device is currently configured and active, we won't actually
1425	 * delete it yet.  Instead, it is marked so that when the release()
1426	 * function is called, that will trigger a proper detach(). */
1427
1428	while (link->open > 0)
1429		wl3501_close(dev);
1430
1431	netif_device_detach(dev);
1432	wl3501_release(link);
1433
1434	unregister_netdev(dev);
1435
1436	if (link->priv)
1437		free_netdev(link->priv);
1438}
1439
1440static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1441			   union iwreq_data *wrqu, char *extra)
1442{
1443	strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1444	return 0;
1445}
1446
1447static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1448			   union iwreq_data *wrqu, char *extra)
1449{
1450	struct wl3501_card *this = netdev_priv(dev);
1451	int channel = wrqu->freq.m;
1452	int rc = -EINVAL;
1453
1454	if (iw_valid_channel(this->reg_domain, channel)) {
1455		this->chan = channel;
1456		rc = wl3501_reset(dev);
1457	}
1458	return rc;
1459}
1460
1461static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1462			   union iwreq_data *wrqu, char *extra)
1463{
1464	struct wl3501_card *this = netdev_priv(dev);
1465
1466	wrqu->freq.m = 100000 *
1467		ieee80211_channel_to_frequency(this->chan, NL80211_BAND_2GHZ);
1468	wrqu->freq.e = 1;
1469	return 0;
1470}
1471
1472static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1473			   union iwreq_data *wrqu, char *extra)
1474{
1475	int rc = -EINVAL;
1476
1477	if (wrqu->mode == IW_MODE_INFRA ||
1478	    wrqu->mode == IW_MODE_ADHOC ||
1479	    wrqu->mode == IW_MODE_AUTO) {
1480		struct wl3501_card *this = netdev_priv(dev);
1481
1482		this->net_type = wrqu->mode;
1483		rc = wl3501_reset(dev);
1484	}
1485	return rc;
1486}
1487
1488static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1489			   union iwreq_data *wrqu, char *extra)
1490{
1491	struct wl3501_card *this = netdev_priv(dev);
1492
1493	wrqu->mode = this->net_type;
1494	return 0;
1495}
1496
1497static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1498			   union iwreq_data *wrqu, char *extra)
1499{
1500	struct wl3501_card *this = netdev_priv(dev);
1501
1502	wrqu->sens.value = this->rssi;
1503	wrqu->sens.disabled = !wrqu->sens.value;
1504	wrqu->sens.fixed = 1;
1505	return 0;
1506}
1507
1508static int wl3501_get_range(struct net_device *dev,
1509			    struct iw_request_info *info,
1510			    union iwreq_data *wrqu, char *extra)
1511{
1512	struct iw_range *range = (struct iw_range *)extra;
1513
1514	/* Set the length (very important for backward compatibility) */
1515	wrqu->data.length = sizeof(*range);
1516
1517	/* Set all the info we don't care or don't know about to zero */
1518	memset(range, 0, sizeof(*range));
1519
1520	/* Set the Wireless Extension versions */
1521	range->we_version_compiled	= WIRELESS_EXT;
1522	range->we_version_source	= 1;
1523	range->throughput		= 2 * 1000 * 1000;     /* ~2 Mb/s */
1524	/* FIXME: study the code to fill in more fields... */
1525	return 0;
1526}
1527
1528static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1529			  union iwreq_data *wrqu, char *extra)
1530{
1531	struct wl3501_card *this = netdev_priv(dev);
1532	int rc = -EINVAL;
1533
1534	/* FIXME: we support other ARPHRDs...*/
1535	if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1536		goto out;
1537	if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
1538		/* FIXME: rescan? */
1539	} else
1540		memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1541		/* FIXME: rescan? deassoc & scan? */
1542	rc = 0;
1543out:
1544	return rc;
1545}
1546
1547static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1548			  union iwreq_data *wrqu, char *extra)
1549{
1550	struct wl3501_card *this = netdev_priv(dev);
1551
1552	wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1553	memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1554	return 0;
1555}
1556
1557static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1558			   union iwreq_data *wrqu, char *extra)
1559{
1560	/*
1561	 * FIXME: trigger scanning with a reset, yes, I'm lazy
1562	 */
1563	return wl3501_reset(dev);
1564}
1565
1566static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1567			   union iwreq_data *wrqu, char *extra)
1568{
1569	struct wl3501_card *this = netdev_priv(dev);
1570	int i;
1571	char *current_ev = extra;
1572	struct iw_event iwe;
1573
1574	for (i = 0; i < this->bss_cnt; ++i) {
1575		iwe.cmd			= SIOCGIWAP;
1576		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1577		memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1578		current_ev = iwe_stream_add_event(info, current_ev,
1579						  extra + IW_SCAN_MAX_DATA,
1580						  &iwe, IW_EV_ADDR_LEN);
1581		iwe.cmd		  = SIOCGIWESSID;
1582		iwe.u.data.flags  = 1;
1583		iwe.u.data.length = this->bss_set[i].ssid.el.len;
1584		current_ev = iwe_stream_add_point(info, current_ev,
1585						  extra + IW_SCAN_MAX_DATA,
1586						  &iwe,
1587						  this->bss_set[i].ssid.essid);
1588		iwe.cmd	   = SIOCGIWMODE;
1589		iwe.u.mode = this->bss_set[i].bss_type;
1590		current_ev = iwe_stream_add_event(info, current_ev,
1591						  extra + IW_SCAN_MAX_DATA,
1592						  &iwe, IW_EV_UINT_LEN);
1593		iwe.cmd = SIOCGIWFREQ;
1594		iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1595		iwe.u.freq.e = 0;
1596		current_ev = iwe_stream_add_event(info, current_ev,
1597						  extra + IW_SCAN_MAX_DATA,
1598						  &iwe, IW_EV_FREQ_LEN);
1599		iwe.cmd = SIOCGIWENCODE;
1600		if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1601			iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1602		else
1603			iwe.u.data.flags = IW_ENCODE_DISABLED;
1604		iwe.u.data.length = 0;
1605		current_ev = iwe_stream_add_point(info, current_ev,
1606						  extra + IW_SCAN_MAX_DATA,
1607						  &iwe, NULL);
1608	}
1609	/* Length of data */
1610	wrqu->data.length = (current_ev - extra);
1611	wrqu->data.flags = 0; /* FIXME: set properly these flags */
1612	return 0;
1613}
1614
1615static int wl3501_set_essid(struct net_device *dev,
1616			    struct iw_request_info *info,
1617			    union iwreq_data *wrqu, char *extra)
1618{
1619	struct wl3501_card *this = netdev_priv(dev);
1620
1621	if (wrqu->data.flags) {
1622		iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1623					 &this->essid.el,
1624					 extra, wrqu->data.length);
1625	} else { /* We accept any ESSID */
1626		iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1627					 &this->essid.el, "ANY", 3);
1628	}
1629	return wl3501_reset(dev);
1630}
1631
1632static int wl3501_get_essid(struct net_device *dev,
1633			    struct iw_request_info *info,
1634			    union iwreq_data *wrqu, char *extra)
1635{
1636	struct wl3501_card *this = netdev_priv(dev);
1637	unsigned long flags;
1638
1639	spin_lock_irqsave(&this->lock, flags);
1640	wrqu->essid.flags  = 1;
1641	wrqu->essid.length = this->essid.el.len;
1642	memcpy(extra, this->essid.essid, this->essid.el.len);
1643	spin_unlock_irqrestore(&this->lock, flags);
1644	return 0;
1645}
1646
1647static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1648			   union iwreq_data *wrqu, char *extra)
1649{
1650	struct wl3501_card *this = netdev_priv(dev);
1651
1652	if (wrqu->data.length > sizeof(this->nick))
1653		return -E2BIG;
1654	strlcpy(this->nick, extra, wrqu->data.length);
1655	return 0;
1656}
1657
1658static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1659			   union iwreq_data *wrqu, char *extra)
1660{
1661	struct wl3501_card *this = netdev_priv(dev);
1662
1663	strlcpy(extra, this->nick, 32);
1664	wrqu->data.length = strlen(extra);
1665	return 0;
1666}
1667
1668static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1669			   union iwreq_data *wrqu, char *extra)
1670{
1671	/*
1672	 * FIXME: have to see from where to get this info, perhaps this card
1673	 * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1674	 * common with the Planet Access Points. -acme
1675	 */
1676	wrqu->bitrate.value = 2000000;
1677	wrqu->bitrate.fixed = 1;
1678	return 0;
1679}
1680
1681static int wl3501_get_rts_threshold(struct net_device *dev,
1682				    struct iw_request_info *info,
1683				    union iwreq_data *wrqu, char *extra)
1684{
1685	u16 threshold; /* size checked: it is u16 */
1686	struct wl3501_card *this = netdev_priv(dev);
1687	int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1688				      &threshold, sizeof(threshold));
1689	if (!rc) {
1690		wrqu->rts.value = threshold;
1691		wrqu->rts.disabled = threshold >= 2347;
1692		wrqu->rts.fixed = 1;
1693	}
1694	return rc;
1695}
1696
1697static int wl3501_get_frag_threshold(struct net_device *dev,
1698				     struct iw_request_info *info,
1699				     union iwreq_data *wrqu, char *extra)
1700{
1701	u16 threshold; /* size checked: it is u16 */
1702	struct wl3501_card *this = netdev_priv(dev);
1703	int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1704				      &threshold, sizeof(threshold));
1705	if (!rc) {
1706		wrqu->frag.value = threshold;
1707		wrqu->frag.disabled = threshold >= 2346;
1708		wrqu->frag.fixed = 1;
1709	}
1710	return rc;
1711}
1712
1713static int wl3501_get_txpow(struct net_device *dev,
1714			    struct iw_request_info *info,
1715			    union iwreq_data *wrqu, char *extra)
1716{
1717	u16 txpow;
1718	struct wl3501_card *this = netdev_priv(dev);
1719	int rc = wl3501_get_mib_value(this,
1720				      WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1721				      &txpow, sizeof(txpow));
1722	if (!rc) {
1723		wrqu->txpower.value = txpow;
1724		wrqu->txpower.disabled = 0;
1725		/*
1726		 * From the MIB values I think this can be configurable,
1727		 * as it lists several tx power levels -acme
1728		 */
1729		wrqu->txpower.fixed = 0;
1730		wrqu->txpower.flags = IW_TXPOW_MWATT;
1731	}
1732	return rc;
1733}
1734
1735static int wl3501_get_retry(struct net_device *dev,
1736			    struct iw_request_info *info,
1737			    union iwreq_data *wrqu, char *extra)
1738{
1739	u8 retry; /* size checked: it is u8 */
1740	struct wl3501_card *this = netdev_priv(dev);
1741	int rc = wl3501_get_mib_value(this,
1742				      WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1743				      &retry, sizeof(retry));
1744	if (rc)
1745		goto out;
1746	if (wrqu->retry.flags & IW_RETRY_LONG) {
1747		wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1748		goto set_value;
1749	}
1750	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1751				  &retry, sizeof(retry));
1752	if (rc)
1753		goto out;
1754	wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1755set_value:
1756	wrqu->retry.value = retry;
1757	wrqu->retry.disabled = 0;
1758out:
1759	return rc;
1760}
1761
1762static int wl3501_get_encode(struct net_device *dev,
1763			     struct iw_request_info *info,
1764			     union iwreq_data *wrqu, char *extra)
1765{
1766	u8 implemented, restricted, keys[100], len_keys, tocopy;
1767	struct wl3501_card *this = netdev_priv(dev);
1768	int rc = wl3501_get_mib_value(this,
1769				      WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1770				      &implemented, sizeof(implemented));
1771	if (rc)
1772		goto out;
1773	if (!implemented) {
1774		wrqu->encoding.flags = IW_ENCODE_DISABLED;
1775		goto out;
1776	}
1777	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1778				  &restricted, sizeof(restricted));
1779	if (rc)
1780		goto out;
1781	wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1782					    IW_ENCODE_OPEN;
1783	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1784				  &len_keys, sizeof(len_keys));
1785	if (rc)
1786		goto out;
1787	rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1788				  keys, len_keys);
1789	if (rc)
1790		goto out;
1791	tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1792	tocopy = min_t(u8, tocopy, 100);
1793	wrqu->encoding.length = tocopy;
1794	memcpy(extra, keys, tocopy);
1795out:
1796	return rc;
1797}
1798
1799static int wl3501_get_power(struct net_device *dev,
1800			    struct iw_request_info *info,
1801			    union iwreq_data *wrqu, char *extra)
1802{
1803	u8 pwr_state;
1804	struct wl3501_card *this = netdev_priv(dev);
1805	int rc = wl3501_get_mib_value(this,
1806				      WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1807				      &pwr_state, sizeof(pwr_state));
1808	if (rc)
1809		goto out;
1810	wrqu->power.disabled = !pwr_state;
1811	wrqu->power.flags = IW_POWER_ON;
1812out:
1813	return rc;
1814}
1815
1816static const iw_handler	wl3501_handler[] = {
1817	IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1818	IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1819	IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1820	IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1821	IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1822	IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1823	IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1824	IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1825	IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1826	IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1827	IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1828	IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1829	IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1830	IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1831	IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1832	IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1833	IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1834	IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1835	IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1836	IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1837	IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1838	IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1839	IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1840	IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1841	IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1842	IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1843};
1844
1845static const struct iw_handler_def wl3501_handler_def = {
1846	.num_standard	= ARRAY_SIZE(wl3501_handler),
1847	.standard	= (iw_handler *)wl3501_handler,
1848	.get_wireless_stats = wl3501_get_wireless_stats,
1849};
1850
1851static const struct net_device_ops wl3501_netdev_ops = {
1852	.ndo_open		= wl3501_open,
1853	.ndo_stop		= wl3501_close,
1854	.ndo_start_xmit		= wl3501_hard_start_xmit,
1855	.ndo_tx_timeout		= wl3501_tx_timeout,
 
1856	.ndo_set_mac_address 	= eth_mac_addr,
1857	.ndo_validate_addr	= eth_validate_addr,
1858};
1859
1860static int wl3501_probe(struct pcmcia_device *p_dev)
1861{
1862	struct net_device *dev;
1863	struct wl3501_card *this;
1864
1865	/* The io structure describes IO port mapping */
1866	p_dev->resource[0]->end	= 16;
1867	p_dev->resource[0]->flags	= IO_DATA_PATH_WIDTH_8;
1868
1869	/* General socket configuration */
1870	p_dev->config_flags	= CONF_ENABLE_IRQ;
1871	p_dev->config_index	= 1;
1872
1873	dev = alloc_etherdev(sizeof(struct wl3501_card));
1874	if (!dev)
1875		goto out_link;
1876
1877
1878	dev->netdev_ops		= &wl3501_netdev_ops;
1879	dev->watchdog_timeo	= 5 * HZ;
1880
1881	this = netdev_priv(dev);
1882	this->wireless_data.spy_data = &this->spy_data;
1883	this->p_dev = p_dev;
1884	dev->wireless_data	= &this->wireless_data;
1885	dev->wireless_handlers	= &wl3501_handler_def;
1886	netif_stop_queue(dev);
1887	p_dev->priv = dev;
1888
1889	return wl3501_config(p_dev);
1890out_link:
1891	return -ENOMEM;
1892}
1893
1894static int wl3501_config(struct pcmcia_device *link)
1895{
1896	struct net_device *dev = link->priv;
1897	int i = 0, j, ret;
1898	struct wl3501_card *this;
1899
1900	/* Try allocating IO ports.  This tries a few fixed addresses.  If you
1901	 * want, you can also read the card's config table to pick addresses --
1902	 * see the serial driver for an example. */
1903	link->io_lines = 5;
1904
1905	for (j = 0x280; j < 0x400; j += 0x20) {
1906		/* The '^0x300' is so that we probe 0x300-0x3ff first, then
1907		 * 0x200-0x2ff, and so on, because this seems safer */
1908		link->resource[0]->start = j;
1909		link->resource[1]->start = link->resource[0]->start + 0x10;
1910		i = pcmcia_request_io(link);
1911		if (i == 0)
1912			break;
1913	}
1914	if (i != 0)
1915		goto failed;
1916
1917	/* Now allocate an interrupt line. Note that this does not actually
1918	 * assign a handler to the interrupt. */
1919
1920	ret = pcmcia_request_irq(link, wl3501_interrupt);
1921	if (ret)
1922		goto failed;
1923
1924	ret = pcmcia_enable_device(link);
1925	if (ret)
1926		goto failed;
1927
1928	dev->irq = link->irq;
1929	dev->base_addr = link->resource[0]->start;
1930	SET_NETDEV_DEV(dev, &link->dev);
1931	if (register_netdev(dev)) {
1932		printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1933		goto failed;
1934	}
1935
1936	this = netdev_priv(dev);
1937
1938	this->base_addr = dev->base_addr;
1939
1940	if (!wl3501_get_flash_mac_addr(this)) {
1941		printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1942		       dev->name);
1943		unregister_netdev(dev);
1944		goto failed;
1945	}
1946
1947	for (i = 0; i < 6; i++)
1948		dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1949
1950	/* print probe information */
1951	printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1952	       "MAC addr in flash ROM:%pM\n",
1953	       dev->name, this->base_addr, (int)dev->irq,
1954	       dev->dev_addr);
1955	/*
1956	 * Initialize card parameters - added by jss
1957	 */
1958	this->net_type		= IW_MODE_INFRA;
1959	this->bss_cnt		= 0;
1960	this->join_sta_bss	= 0;
1961	this->adhoc_times	= 0;
1962	iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1963				 "ANY", 3);
1964	this->card_name[0]	= '\0';
1965	this->firmware_date[0]	= '\0';
1966	this->rssi		= 255;
1967	this->chan		= iw_default_channel(this->reg_domain);
1968	strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1969	spin_lock_init(&this->lock);
1970	init_waitqueue_head(&this->wait);
1971	netif_start_queue(dev);
1972	return 0;
1973
1974failed:
1975	wl3501_release(link);
1976	return -ENODEV;
1977}
1978
1979static void wl3501_release(struct pcmcia_device *link)
1980{
1981	pcmcia_disable_device(link);
1982}
1983
1984static int wl3501_suspend(struct pcmcia_device *link)
1985{
1986	struct net_device *dev = link->priv;
1987
1988	wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1989	if (link->open)
1990		netif_device_detach(dev);
1991
1992	return 0;
1993}
1994
1995static int wl3501_resume(struct pcmcia_device *link)
1996{
1997	struct net_device *dev = link->priv;
1998
1999	wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2000	if (link->open) {
2001		wl3501_reset(dev);
2002		netif_device_attach(dev);
2003	}
2004
2005	return 0;
2006}
2007
2008
2009static const struct pcmcia_device_id wl3501_ids[] = {
2010	PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2011	PCMCIA_DEVICE_NULL
2012};
2013MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2014
2015static struct pcmcia_driver wl3501_driver = {
2016	.owner		= THIS_MODULE,
2017	.name		= "wl3501_cs",
2018	.probe		= wl3501_probe,
2019	.remove		= wl3501_detach,
2020	.id_table	= wl3501_ids,
2021	.suspend	= wl3501_suspend,
2022	.resume		= wl3501_resume,
2023};
2024module_pcmcia_driver(wl3501_driver);
2025
2026MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2027	      "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2028	      "Gustavo Niemeyer <niemeyer@conectiva.com>");
2029MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2030MODULE_LICENSE("GPL");