drivers/net/wireless/wl3501_cs.c

   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/init.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/in.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/fcntl.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/ioport.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/skbuff.h>
  43 #include <linux/slab.h>
  44 #include <linux/string.h>
  45 #include <linux/wireless.h>
  46 #include <linux/ieee80211.h>
  47
  48 #include <net/iw_handler.h>
  49
  50 #include <pcmcia/cistpl.h>
  51 #include <pcmcia/cisreg.h>
  52 #include <pcmcia/ds.h>
  53
  54 #include <asm/io.h>
  55 #include <asm/uaccess.h>
  56 #include <asm/system.h>
  57
  58 #include "wl3501.h"
  59
  60 #ifndef __i386__
  61 #define slow_down_io()
  62 #endif
  63
  64 /* For rough constant delay */
  65 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  66
  67
  68
  69 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  70 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  71 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  72
  73 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  74 #define WL3501_MAX_ADHOC_TRIES 16
  75
  76 #define WL3501_RESUME   0
  77 #define WL3501_SUSPEND  1
  78
  79 static int wl3501_config(struct pcmcia_device *link);
  80 static void wl3501_release(struct pcmcia_device *link);
  81
  82 static const struct {
  83         int reg_domain;
  84         int min, max, deflt;
  85 } iw_channel_table[] = {
  86         {
  87                 .reg_domain = IW_REG_DOMAIN_FCC,
  88                 .min        = 1,
  89                 .max        = 11,
  90                 .deflt      = 1,
  91         },
  92         {
  93                 .reg_domain = IW_REG_DOMAIN_DOC,
  94                 .min        = 1,
  95                 .max        = 11,
  96                 .deflt      = 1,
  97         },
  98         {
  99                 .reg_domain = IW_REG_DOMAIN_ETSI,
 100                 .min        = 1,
 101                 .max        = 13,
 102                 .deflt      = 1,
 103         },
 104         {
 105                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 106                 .min        = 10,
 107                 .max        = 11,
 108                 .deflt      = 10,
 109         },
 110         {
 111                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 112                 .min        = 10,
 113                 .max        = 13,
 114                 .deflt      = 10,
 115         },
 116         {
 117                 .reg_domain = IW_REG_DOMAIN_MKK,
 118                 .min        = 14,
 119                 .max        = 14,
 120                 .deflt      = 14,
 121         },
 122         {
 123                 .reg_domain = IW_REG_DOMAIN_MKK1,
 124                 .min        = 1,
 125                 .max        = 14,
 126                 .deflt      = 1,
 127         },
 128         {
 129                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 130                 .min        = 3,
 131                 .max        = 9,
 132                 .deflt      = 9,
 133         },
 134 };
 135
 136 /**
 137  * iw_valid_channel - validate channel in regulatory domain
 138  * @reg_comain - regulatory domain
 139  * @channel - channel to validate
 140  *
 141  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 142  */
 143 static int iw_valid_channel(int reg_domain, int channel)
 144 {
 145         int i, rc = 0;
 146
 147         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 148                 if (reg_domain == iw_channel_table[i].reg_domain) {
 149                         rc = channel >= iw_channel_table[i].min &&
 150                              channel <= iw_channel_table[i].max;
 151                         break;
 152                 }
 153         return rc;
 154 }
 155
 156 /**
 157  * iw_default_channel - get default channel for a regulatory domain
 158  * @reg_comain - regulatory domain
 159  *
 160  * Returns the default channel for a regulatory domain
 161  */
 162 static int iw_default_channel(int reg_domain)
 163 {
 164         int i, rc = 1;
 165
 166         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 167                 if (reg_domain == iw_channel_table[i].reg_domain) {
 168                         rc = iw_channel_table[i].deflt;
 169                         break;
 170                 }
 171         return rc;
 172 }
 173
 174 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 175                                      struct iw_mgmt_info_element *el,
 176                                      void *value, int len)
 177 {
 178         el->id  = id;
 179         el->len = len;
 180         memcpy(el->data, value, len);
 181 }
 182
 183 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 184                                       struct iw_mgmt_info_element *from)
 185 {
 186         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 187 }
 188
 189 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 190 {
 191         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 192 }
 193
 194 /*
 195  * Get Ethernet MAC address.
 196  *
 197  * WARNING: We switch to FPAGE0 and switc back again.
 198  *          Making sure there is no other WL function beening called by ISR.
 199  */
 200 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 201 {
 202         int base_addr = this->base_addr;
 203
 204         /* get MAC addr */
 205         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 206         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 207         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 208
 209         /* wait for reading EEPROM */
 210         WL3501_NOPLOOP(100);
 211         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 212         WL3501_NOPLOOP(100);
 213         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 214         WL3501_NOPLOOP(100);
 215         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 216         WL3501_NOPLOOP(100);
 217         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 218         WL3501_NOPLOOP(100);
 219         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 220         WL3501_NOPLOOP(100);
 221         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 222         WL3501_NOPLOOP(100);
 223         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 224         WL3501_NOPLOOP(100);
 225         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 226         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 227         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 228         WL3501_NOPLOOP(100);
 229         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 230         WL3501_NOPLOOP(100);
 231         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 232         /* switch to SRAM Page 0 (for safety) */
 233         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 234
 235         /* The MAC addr should be 00:60:... */
 236         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 237 }
 238
 239 /**
 240  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 241  * @dest: Card addressing space
 242  * @src: PC addressing space
 243  * @size: Bytes to move
 244  *
 245  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 246  */
 247 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 248                               int size)
 249 {
 250         /* switch to SRAM Page 0 */
 251         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 252                                                    WL3501_BSS_SPAGE0);
 253         /* set LMAL and LMAH */
 254         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 255         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 256
 257         /* rep out to Port A */
 258         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 259 }
 260
 261 /**
 262  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 263  * @src: Card addressing space
 264  * @dest: PC addressing space
 265  * @size: Bytes to move
 266  *
 267  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 268  */
 269 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 270                                 int size)
 271 {
 272         /* switch to SRAM Page 0 */
 273         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 274                                                   WL3501_BSS_SPAGE0);
 275         /* set LMAL and LMAH */
 276         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 277         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 278
 279         /* rep get from Port A */
 280         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 281 }
 282
 283 /*
 284  * Get/Allocate a free Tx Data Buffer
 285  *
 286  *  *--------------*-----------------*----------------------------------*
 287  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 288  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 289  *  *--------------*-----------------*----------------------------------*
 290  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 291  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 292  *
 293  * Return = Position in Card
 294  */
 295 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 296 {
 297         u16 next, blk_cnt = 0, zero = 0;
 298         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 299         u16 ret = 0;
 300
 301         if (full_len > this->tx_buffer_cnt * 254)
 302                 goto out;
 303         ret = this->tx_buffer_head;
 304         while (full_len) {
 305                 if (full_len < 254)
 306                         full_len = 0;
 307                 else
 308                         full_len -= 254;
 309                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 310                                     sizeof(next));
 311                 if (!full_len)
 312                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 313                                           sizeof(zero));
 314                 this->tx_buffer_head = next;
 315                 blk_cnt++;
 316                 /* if buffer is not enough */
 317                 if (!next && full_len) {
 318                         this->tx_buffer_head = ret;
 319                         ret = 0;
 320                         goto out;
 321                 }
 322         }
 323         this->tx_buffer_cnt -= blk_cnt;
 324 out:
 325         return ret;
 326 }
 327
 328 /*
 329  * Free an allocated Tx Buffer. ptr must be correct position.
 330  */
 331 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 332 {
 333         /* check if all space is not free */
 334         if (!this->tx_buffer_head)
 335                 this->tx_buffer_head = ptr;
 336         else
 337                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 338                                   &ptr, sizeof(ptr));
 339         while (ptr) {
 340                 u16 next;
 341
 342                 this->tx_buffer_cnt++;
 343                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 344                 this->tx_buffer_tail = ptr;
 345                 ptr = next;
 346         }
 347 }
 348
 349 static int wl3501_esbq_req_test(struct wl3501_card *this)
 350 {
 351         u8 tmp = 0;
 352
 353         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 354         return tmp & 0x80;
 355 }
 356
 357 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 358 {
 359         u16 tmp = 0;
 360
 361         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 362         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 363         this->esbq_req_head += 4;
 364         if (this->esbq_req_head >= this->esbq_req_end)
 365                 this->esbq_req_head = this->esbq_req_start;
 366 }
 367
 368 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 369 {
 370         int rc = -EIO;
 371
 372         if (wl3501_esbq_req_test(this)) {
 373                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 374                 if (ptr) {
 375                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 376                         wl3501_esbq_req(this, &ptr);
 377                         rc = 0;
 378                 }
 379         }
 380         return rc;
 381 }
 382
 383 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 384                                 void *bf, int size)
 385 {
 386         struct wl3501_get_req sig = {
 387                 .sig_id     = WL3501_SIG_GET_REQ,
 388                 .mib_attrib = index,
 389         };
 390         unsigned long flags;
 391         int rc = -EIO;
 392
 393         spin_lock_irqsave(&this->lock, flags);
 394         if (wl3501_esbq_req_test(this)) {
 395                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 396                 if (ptr) {
 397                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 398                         wl3501_esbq_req(this, &ptr);
 399                         this->sig_get_confirm.mib_status = 255;
 400                         spin_unlock_irqrestore(&this->lock, flags);
 401                         rc = wait_event_interruptible(this->wait,
 402                                 this->sig_get_confirm.mib_status != 255);
 403                         if (!rc)
 404                                 memcpy(bf, this->sig_get_confirm.mib_value,
 405                                        size);
 406                         goto out;
 407                 }
 408         }
 409         spin_unlock_irqrestore(&this->lock, flags);
 410 out:
 411         return rc;
 412 }
 413
 414 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 415 {
 416         struct wl3501_pwr_mgmt_req sig = {
 417                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 418                 .pwr_save       = suspend,
 419                 .wake_up        = !suspend,
 420                 .receive_dtims  = 10,
 421         };
 422         unsigned long flags;
 423         int rc = -EIO;
 424
 425         spin_lock_irqsave(&this->lock, flags);
 426         if (wl3501_esbq_req_test(this)) {
 427                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 428                 if (ptr) {
 429                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 430                         wl3501_esbq_req(this, &ptr);
 431                         this->sig_pwr_mgmt_confirm.status = 255;
 432                         spin_unlock_irqrestore(&this->lock, flags);
 433                         rc = wait_event_interruptible(this->wait,
 434                                 this->sig_pwr_mgmt_confirm.status != 255);
 435                         printk(KERN_INFO "%s: %s status=%d\n", __func__,
 436                                suspend ? "suspend" : "resume",
 437                                this->sig_pwr_mgmt_confirm.status);
 438                         goto out;
 439                 }
 440         }
 441         spin_unlock_irqrestore(&this->lock, flags);
 442 out:
 443         return rc;
 444 }
 445
 446 /**
 447  * wl3501_send_pkt - Send a packet.
 448  * @this - card
 449  *
 450  * Send a packet.
 451  *
 452  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 453  *                                   data[6] - data[11] is Src MAC Addr)
 454  * Ref: IEEE 802.11
 455  */
 456 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 457 {
 458         u16 bf, sig_bf, next, tmplen, pktlen;
 459         struct wl3501_md_req sig = {
 460                 .sig_id = WL3501_SIG_MD_REQ,
 461         };
 462         u8 *pdata = (char *)data;
 463         int rc = -EIO;
 464
 465         if (wl3501_esbq_req_test(this)) {
 466                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 467                 rc = -ENOMEM;
 468                 if (!sig_bf)    /* No free buffer available */
 469                         goto out;
 470                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 471                 if (!bf) {
 472                         /* No free buffer available */
 473                         wl3501_free_tx_buffer(this, sig_bf);
 474                         goto out;
 475                 }
 476                 rc = 0;
 477                 memcpy(&sig.daddr[0], pdata, 12);
 478                 pktlen = len - 12;
 479                 pdata += 12;
 480                 sig.data = bf;
 481                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 482                         u8 addr4[ETH_ALEN] = {
 483                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 484                         };
 485
 486                         wl3501_set_to_wla(this, bf + 2 +
 487                                           offsetof(struct wl3501_tx_hdr, addr4),
 488                                           addr4, sizeof(addr4));
 489                         sig.size = pktlen + 24 + 4 + 6;
 490                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 491                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 492                                 pktlen -= tmplen;
 493                         } else {
 494                                 tmplen = pktlen;
 495                                 pktlen = 0;
 496                         }
 497                         wl3501_set_to_wla(this,
 498                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 499                                           pdata, tmplen);
 500                         pdata += tmplen;
 501                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 502                         bf = next;
 503                 } else {
 504                         sig.size = pktlen + 24 + 4 - 2;
 505                         pdata += 2;
 506                         pktlen -= 2;
 507                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 508                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 509                                 pktlen -= tmplen;
 510                         } else {
 511                                 tmplen = pktlen;
 512                                 pktlen = 0;
 513                         }
 514                         wl3501_set_to_wla(this, bf + 2 +
 515                                           offsetof(struct wl3501_tx_hdr, addr4),
 516                                           pdata, tmplen);
 517                         pdata += tmplen;
 518                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 519                         bf = next;
 520                 }
 521                 while (pktlen > 0) {
 522                         if (pktlen > 254) {
 523                                 tmplen = 254;
 524                                 pktlen -= 254;
 525                         } else {
 526                                 tmplen = pktlen;
 527                                 pktlen = 0;
 528                         }
 529                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 530                         pdata += tmplen;
 531                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 532                         bf = next;
 533                 }
 534                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 535                 wl3501_esbq_req(this, &sig_bf);
 536         }
 537 out:
 538         return rc;
 539 }
 540
 541 static int wl3501_mgmt_resync(struct wl3501_card *this)
 542 {
 543         struct wl3501_resync_req sig = {
 544                 .sig_id = WL3501_SIG_RESYNC_REQ,
 545         };
 546
 547         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 548 }
 549
 550 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 551 {
 552         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 553                                                  WL3501_NET_TYPE_ADHOC;
 554 }
 555
 556 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 557 {
 558         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 559                                                  WL3501_MGMT_CAPABILITY_IBSS;
 560 }
 561
 562 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 563 {
 564         struct wl3501_scan_req sig = {
 565                 .sig_id         = WL3501_SIG_SCAN_REQ,
 566                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 567                 .probe_delay    = 0x10,
 568                 .min_chan_time  = chan_time,
 569                 .max_chan_time  = chan_time,
 570                 .bss_type       = wl3501_fw_bss_type(this),
 571         };
 572
 573         this->bss_cnt = this->join_sta_bss = 0;
 574         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 575 }
 576
 577 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 578 {
 579         struct wl3501_join_req sig = {
 580                 .sig_id           = WL3501_SIG_JOIN_REQ,
 581                 .timeout          = 10,
 582                 .ds_pset = {
 583                         .el = {
 584                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 585                                 .len = 1,
 586                         },
 587                         .chan   = this->chan,
 588                 },
 589         };
 590
 591         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 592         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 593 }
 594
 595 static int wl3501_mgmt_start(struct wl3501_card *this)
 596 {
 597         struct wl3501_start_req sig = {
 598                 .sig_id                 = WL3501_SIG_START_REQ,
 599                 .beacon_period          = 400,
 600                 .dtim_period            = 1,
 601                 .ds_pset = {
 602                         .el = {
 603                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 604                                 .len = 1,
 605                         },
 606                         .chan   = this->chan,
 607                 },
 608                 .bss_basic_rset = {
 609                         .el = {
 610                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 611                                 .len = 2,
 612                         },
 613                         .data_rate_labels = {
 614                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 615                                       IW_MGMT_RATE_LABEL_1MBIT,
 616                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 617                                       IW_MGMT_RATE_LABEL_2MBIT,
 618                         },
 619                 },
 620                 .operational_rset       = {
 621                         .el = {
 622                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 623                                 .len = 2,
 624                         },
 625                         .data_rate_labels = {
 626                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 627                                       IW_MGMT_RATE_LABEL_1MBIT,
 628                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 629                                       IW_MGMT_RATE_LABEL_2MBIT,
 630                         },
 631                 },
 632                 .ibss_pset              = {
 633                         .el = {
 634                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 635                                 .len     = 2,
 636                         },
 637                         .atim_window = 10,
 638                 },
 639                 .bss_type               = wl3501_fw_bss_type(this),
 640                 .cap_info               = wl3501_fw_cap_info(this),
 641         };
 642
 643         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 644         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 645         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 646 }
 647
 648 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 649 {
 650         u16 i = 0;
 651         int matchflag = 0;
 652         struct wl3501_scan_confirm sig;
 653
 654         pr_debug("entry");
 655         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 656         if (sig.status == WL3501_STATUS_SUCCESS) {
 657                 pr_debug("success");
 658                 if ((this->net_type == IW_MODE_INFRA &&
 659                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 660                     (this->net_type == IW_MODE_ADHOC &&
 661                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 662                     this->net_type == IW_MODE_AUTO) {
 663                         if (!this->essid.el.len)
 664                                 matchflag = 1;
 665                         else if (this->essid.el.len == 3 &&
 666                                  !memcmp(this->essid.essid, "ANY", 3))
 667                                 matchflag = 1;
 668                         else if (this->essid.el.len != sig.ssid.el.len)
 669                                 matchflag = 0;
 670                         else if (memcmp(this->essid.essid, sig.ssid.essid,
 671                                         this->essid.el.len))
 672                                 matchflag = 0;
 673                         else
 674                                 matchflag = 1;
 675                         if (matchflag) {
 676                                 for (i = 0; i < this->bss_cnt; i++) {
 677                                         if (!memcmp(this->bss_set[i].bssid,
 678                                                     sig.bssid, ETH_ALEN)) {
 679                                                 matchflag = 0;
 680                                                 break;
 681                                         }
 682                                 }
 683                         }
 684                         if (matchflag && (i < 20)) {
 685                                 memcpy(&this->bss_set[i].beacon_period,
 686                                        &sig.beacon_period, 73);
 687                                 this->bss_cnt++;
 688                                 this->rssi = sig.rssi;
 689                         }
 690                 }
 691         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 692                 pr_debug("timeout");
 693                 this->join_sta_bss = 0;
 694                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 695                         if (!wl3501_mgmt_join(this, i))
 696                                 break;
 697                 this->join_sta_bss = i;
 698                 if (this->join_sta_bss == this->bss_cnt) {
 699                         if (this->net_type == IW_MODE_INFRA)
 700                                 wl3501_mgmt_scan(this, 100);
 701                         else {
 702                                 this->adhoc_times++;
 703                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 704                                         wl3501_mgmt_start(this);
 705                                 else
 706                                         wl3501_mgmt_scan(this, 100);
 707                         }
 708                 }
 709         }
 710 }
 711
 712 /**
 713  * wl3501_block_interrupt - Mask interrupt from SUTRO
 714  * @this - card
 715  *
 716  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 717  * Return: 1 if interrupt is originally enabled
 718  */
 719 static int wl3501_block_interrupt(struct wl3501_card *this)
 720 {
 721         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 722         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 723                         WL3501_GCR_ENECINT));
 724
 725         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 726         return old & WL3501_GCR_ENECINT;
 727 }
 728
 729 /**
 730  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 731  * @this - card
 732  *
 733  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 734  * Return: 1 if interrupt is originally enabled
 735  */
 736 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 737 {
 738         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 739         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 740                   WL3501_GCR_ENECINT;
 741
 742         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 743         return old & WL3501_GCR_ENECINT;
 744 }
 745
 746 /**
 747  * wl3501_receive - Receive data from Receive Queue.
 748  *
 749  * Receive data from Receive Queue.
 750  *
 751  * @this: card
 752  * @bf: address of host
 753  * @size: size of buffer.
 754  */
 755 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 756 {
 757         u16 next_addr, next_addr1;
 758         u8 *data = bf + 12;
 759
 760         size -= 12;
 761         wl3501_get_from_wla(this, this->start_seg + 2,
 762                             &next_addr, sizeof(next_addr));
 763         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 764                 wl3501_get_from_wla(this,
 765                                     this->start_seg +
 766                                         sizeof(struct wl3501_rx_hdr), data,
 767                                     WL3501_BLKSZ -
 768                                         sizeof(struct wl3501_rx_hdr));
 769                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 770                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 771         } else {
 772                 wl3501_get_from_wla(this,
 773                                     this->start_seg +
 774                                         sizeof(struct wl3501_rx_hdr),
 775                                     data, size);
 776                 size = 0;
 777         }
 778         while (size > 0) {
 779                 if (size > WL3501_BLKSZ - 5) {
 780                         wl3501_get_from_wla(this, next_addr + 5, data,
 781                                             WL3501_BLKSZ - 5);
 782                         size -= WL3501_BLKSZ - 5;
 783                         data += WL3501_BLKSZ - 5;
 784                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 785                                             sizeof(next_addr1));
 786                         next_addr = next_addr1;
 787                 } else {
 788                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 789                         size = 0;
 790                 }
 791         }
 792         return 0;
 793 }
 794
 795 static void wl3501_esbq_req_free(struct wl3501_card *this)
 796 {
 797         u8 tmp;
 798         u16 addr;
 799
 800         if (this->esbq_req_head == this->esbq_req_tail)
 801                 goto out;
 802         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 803         if (!(tmp & 0x80))
 804                 goto out;
 805         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 806         wl3501_free_tx_buffer(this, addr);
 807         this->esbq_req_tail += 4;
 808         if (this->esbq_req_tail >= this->esbq_req_end)
 809                 this->esbq_req_tail = this->esbq_req_start;
 810 out:
 811         return;
 812 }
 813
 814 static int wl3501_esbq_confirm(struct wl3501_card *this)
 815 {
 816         u8 tmp;
 817
 818         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 819         return tmp & 0x80;
 820 }
 821
 822 static void wl3501_online(struct net_device *dev)
 823 {
 824         struct wl3501_card *this = netdev_priv(dev);
 825
 826         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 827                dev->name, this->bssid);
 828         netif_wake_queue(dev);
 829 }
 830
 831 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 832 {
 833         u8 tmp = 0;
 834
 835         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 836         this->esbq_confirm += 4;
 837         if (this->esbq_confirm >= this->esbq_confirm_end)
 838                 this->esbq_confirm = this->esbq_confirm_start;
 839 }
 840
 841 static int wl3501_mgmt_auth(struct wl3501_card *this)
 842 {
 843         struct wl3501_auth_req sig = {
 844                 .sig_id  = WL3501_SIG_AUTH_REQ,
 845                 .type    = WL3501_SYS_TYPE_OPEN,
 846                 .timeout = 1000,
 847         };
 848
 849         pr_debug("entry");
 850         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 851         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 852 }
 853
 854 static int wl3501_mgmt_association(struct wl3501_card *this)
 855 {
 856         struct wl3501_assoc_req sig = {
 857                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 858                 .timeout         = 1000,
 859                 .listen_interval = 5,
 860                 .cap_info        = this->cap_info,
 861         };
 862
 863         pr_debug("entry");
 864         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 865         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 866 }
 867
 868 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 869 {
 870         struct wl3501_card *this = netdev_priv(dev);
 871         struct wl3501_join_confirm sig;
 872
 873         pr_debug("entry");
 874         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 875         if (sig.status == WL3501_STATUS_SUCCESS) {
 876                 if (this->net_type == IW_MODE_INFRA) {
 877                         if (this->join_sta_bss < this->bss_cnt) {
 878                                 const int i = this->join_sta_bss;
 879                                 memcpy(this->bssid,
 880                                        this->bss_set[i].bssid, ETH_ALEN);
 881                                 this->chan = this->bss_set[i].ds_pset.chan;
 882                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 883                                                      &this->bss_set[i].ssid.el);
 884                                 wl3501_mgmt_auth(this);
 885                         }
 886                 } else {
 887                         const int i = this->join_sta_bss;
 888
 889                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 890                         this->chan = this->bss_set[i].ds_pset.chan;
 891                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 892                                                   &this->bss_set[i].ssid.el);
 893                         wl3501_online(dev);
 894                 }
 895         } else {
 896                 int i;
 897                 this->join_sta_bss++;
 898                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 899                         if (!wl3501_mgmt_join(this, i))
 900                                 break;
 901                 this->join_sta_bss = i;
 902                 if (this->join_sta_bss == this->bss_cnt) {
 903                         if (this->net_type == IW_MODE_INFRA)
 904                                 wl3501_mgmt_scan(this, 100);
 905                         else {
 906                                 this->adhoc_times++;
 907                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 908                                         wl3501_mgmt_start(this);
 909                                 else
 910                                         wl3501_mgmt_scan(this, 100);
 911                         }
 912                 }
 913         }
 914 }
 915
 916 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 917                                           struct wl3501_card *this)
 918 {
 919         if (this->net_type == IW_MODE_INFRA) {
 920                 printk(KERN_INFO "Wireless LAN offline\n");
 921                 netif_stop_queue(dev);
 922                 wl3501_mgmt_resync(this);
 923         }
 924 }
 925
 926 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 927                                                struct wl3501_card *this,
 928                                                u16 addr)
 929 {
 930         struct wl3501_md_confirm sig;
 931
 932         pr_debug("entry");
 933         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 934         wl3501_free_tx_buffer(this, sig.data);
 935         if (netif_queue_stopped(dev))
 936                 netif_wake_queue(dev);
 937 }
 938
 939 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 940                                            struct wl3501_card *this, u16 addr)
 941 {
 942         struct wl3501_md_ind sig;
 943         struct sk_buff *skb;
 944         u8 rssi, addr4[ETH_ALEN];
 945         u16 pkt_len;
 946
 947         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 948         this->start_seg = sig.data;
 949         wl3501_get_from_wla(this,
 950                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 951                             &rssi, sizeof(rssi));
 952         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 953
 954         wl3501_get_from_wla(this,
 955                             sig.data +
 956                                 offsetof(struct wl3501_rx_hdr, addr4),
 957                             &addr4, sizeof(addr4));
 958         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 959               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 960                 printk(KERN_INFO "Insupported packet type!\n");
 961                 return;
 962         }
 963         pkt_len = sig.size + 12 - 24 - 4 - 6;
 964
 965         skb = dev_alloc_skb(pkt_len + 5);
 966
 967         if (!skb) {
 968                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
 969                        dev->name, pkt_len);
 970                 dev->stats.rx_dropped++;
 971         } else {
 972                 skb->dev = dev;
 973                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
 974                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
 975                 wl3501_receive(this, skb->data, pkt_len);
 976                 skb_put(skb, pkt_len);
 977                 skb->protocol   = eth_type_trans(skb, dev);
 978                 dev->stats.rx_packets++;
 979                 dev->stats.rx_bytes += skb->len;
 980                 netif_rx(skb);
 981         }
 982 }
 983
 984 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
 985                                                 u16 addr, void *sig, int size)
 986 {
 987         pr_debug("entry");
 988         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
 989                             sizeof(this->sig_get_confirm));
 990         wake_up(&this->wait);
 991 }
 992
 993 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
 994                                                   struct wl3501_card *this,
 995                                                   u16 addr)
 996 {
 997         struct wl3501_start_confirm sig;
 998
 999         pr_debug("entry");
1000         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1001         if (sig.status == WL3501_STATUS_SUCCESS)
1002                 netif_wake_queue(dev);
1003 }
1004
1005 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1006                                                   u16 addr)
1007 {
1008         struct wl3501_card *this = netdev_priv(dev);
1009         struct wl3501_assoc_confirm sig;
1010
1011         pr_debug("entry");
1012         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1013
1014         if (sig.status == WL3501_STATUS_SUCCESS)
1015                 wl3501_online(dev);
1016 }
1017
1018 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1019                                                  u16 addr)
1020 {
1021         struct wl3501_auth_confirm sig;
1022
1023         pr_debug("entry");
1024         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1025
1026         if (sig.status == WL3501_STATUS_SUCCESS)
1027                 wl3501_mgmt_association(this);
1028         else
1029                 wl3501_mgmt_resync(this);
1030 }
1031
1032 static inline void wl3501_rx_interrupt(struct net_device *dev)
1033 {
1034         int morepkts;
1035         u16 addr;
1036         u8 sig_id;
1037         struct wl3501_card *this = netdev_priv(dev);
1038
1039         pr_debug("entry");
1040 loop:
1041         morepkts = 0;
1042         if (!wl3501_esbq_confirm(this))
1043                 goto free;
1044         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1045         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1046
1047         switch (sig_id) {
1048         case WL3501_SIG_DEAUTH_IND:
1049         case WL3501_SIG_DISASSOC_IND:
1050         case WL3501_SIG_ALARM:
1051                 wl3501_alarm_interrupt(dev, this);
1052                 break;
1053         case WL3501_SIG_MD_CONFIRM:
1054                 wl3501_md_confirm_interrupt(dev, this, addr);
1055                 break;
1056         case WL3501_SIG_MD_IND:
1057                 wl3501_md_ind_interrupt(dev, this, addr);
1058                 break;
1059         case WL3501_SIG_GET_CONFIRM:
1060                 wl3501_get_confirm_interrupt(this, addr,
1061                                              &this->sig_get_confirm,
1062                                              sizeof(this->sig_get_confirm));
1063                 break;
1064         case WL3501_SIG_PWR_MGMT_CONFIRM:
1065                 wl3501_get_confirm_interrupt(this, addr,
1066                                              &this->sig_pwr_mgmt_confirm,
1067                                             sizeof(this->sig_pwr_mgmt_confirm));
1068                 break;
1069         case WL3501_SIG_START_CONFIRM:
1070                 wl3501_start_confirm_interrupt(dev, this, addr);
1071                 break;
1072         case WL3501_SIG_SCAN_CONFIRM:
1073                 wl3501_mgmt_scan_confirm(this, addr);
1074                 break;
1075         case WL3501_SIG_JOIN_CONFIRM:
1076                 wl3501_mgmt_join_confirm(dev, addr);
1077                 break;
1078         case WL3501_SIG_ASSOC_CONFIRM:
1079                 wl3501_assoc_confirm_interrupt(dev, addr);
1080                 break;
1081         case WL3501_SIG_AUTH_CONFIRM:
1082                 wl3501_auth_confirm_interrupt(this, addr);
1083                 break;
1084         case WL3501_SIG_RESYNC_CONFIRM:
1085                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1086                 break;
1087         }
1088         wl3501_esbq_confirm_done(this);
1089         morepkts = 1;
1090         /* free request if necessary */
1091 free:
1092         wl3501_esbq_req_free(this);
1093         if (morepkts)
1094                 goto loop;
1095 }
1096
1097 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1098 {
1099         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1100 }
1101
1102 /**
1103  * wl3501_interrupt - Hardware interrupt from card.
1104  * @irq - Interrupt number
1105  * @dev_id - net_device
1106  *
1107  * We must acknowledge the interrupt as soon as possible, and block the
1108  * interrupt from the same card immediately to prevent re-entry.
1109  *
1110  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1111  * On the other hand, to prevent SUTRO from malfunctioning, we must
1112  * unlock the SUTRO as soon as possible.
1113  */
1114 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1115 {
1116         struct net_device *dev = dev_id;
1117         struct wl3501_card *this;
1118
1119         this = netdev_priv(dev);
1120         spin_lock(&this->lock);
1121         wl3501_ack_interrupt(this);
1122         wl3501_block_interrupt(this);
1123         wl3501_rx_interrupt(dev);
1124         wl3501_unblock_interrupt(this);
1125         spin_unlock(&this->lock);
1126
1127         return IRQ_HANDLED;
1128 }
1129
1130 static int wl3501_reset_board(struct wl3501_card *this)
1131 {
1132         u8 tmp = 0;
1133         int i, rc = 0;
1134
1135         /* Coreset */
1136         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1137         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1138         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1139
1140         /* Reset SRAM 0x480 to zero */
1141         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1142
1143         /* Start up */
1144         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1145
1146         WL3501_NOPLOOP(1024 * 50);
1147
1148         wl3501_unblock_interrupt(this); /* acme: was commented */
1149
1150         /* Polling Self_Test_Status */
1151         for (i = 0; i < 10000; i++) {
1152                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1153
1154                 if (tmp == 'W') {
1155                         /* firmware complete all test successfully */
1156                         tmp = 'A';
1157                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1158                         goto out;
1159                 }
1160                 WL3501_NOPLOOP(10);
1161         }
1162         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1163         rc = -ENODEV;
1164 out:
1165         return rc;
1166 }
1167
1168 static int wl3501_init_firmware(struct wl3501_card *this)
1169 {
1170         u16 ptr, next;
1171         int rc = wl3501_reset_board(this);
1172
1173         if (rc)
1174                 goto fail;
1175         this->card_name[0] = '\0';
1176         wl3501_get_from_wla(this, 0x1a00,
1177                             this->card_name, sizeof(this->card_name));
1178         this->card_name[sizeof(this->card_name) - 1] = '\0';
1179         this->firmware_date[0] = '\0';
1180         wl3501_get_from_wla(this, 0x1a40,
1181                             this->firmware_date, sizeof(this->firmware_date));
1182         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1183         /* Switch to SRAM Page 0 */
1184         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1185         /* Read parameter from card */
1186         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1187         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1188         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1189         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1190         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1191         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1192         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1193         this->esbq_req_end     += this->esbq_req_start;
1194         this->esbq_confirm      = this->esbq_confirm_start;
1195         this->esbq_confirm_end += this->esbq_confirm_start;
1196         /* Initial Tx Buffer */
1197         this->tx_buffer_cnt = 1;
1198         ptr = this->tx_buffer_head;
1199         next = ptr + WL3501_BLKSZ;
1200         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1201                 this->tx_buffer_cnt++;
1202                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1203                 ptr = next;
1204                 next = ptr + WL3501_BLKSZ;
1205         }
1206         rc = 0;
1207         next = 0;
1208         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1209         this->tx_buffer_tail = ptr;
1210 out:
1211         return rc;
1212 fail:
1213         printk(KERN_WARNING "%s: failed!\n", __func__);
1214         goto out;
1215 }
1216
1217 static int wl3501_close(struct net_device *dev)
1218 {
1219         struct wl3501_card *this = netdev_priv(dev);
1220         int rc = -ENODEV;
1221         unsigned long flags;
1222         struct pcmcia_device *link;
1223         link = this->p_dev;
1224
1225         spin_lock_irqsave(&this->lock, flags);
1226         link->open--;
1227
1228         /* Stop wl3501_hard_start_xmit() from now on */
1229         netif_stop_queue(dev);
1230         wl3501_ack_interrupt(this);
1231
1232         /* Mask interrupts from the SUTRO */
1233         wl3501_block_interrupt(this);
1234
1235         rc = 0;
1236         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1237         spin_unlock_irqrestore(&this->lock, flags);
1238         return rc;
1239 }
1240
1241 /**
1242  * wl3501_reset - Reset the SUTRO.
1243  * @dev - network device
1244  *
1245  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1246  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1247  * is running. It seems to be dangerous.
1248  */
1249 static int wl3501_reset(struct net_device *dev)
1250 {
1251         struct wl3501_card *this = netdev_priv(dev);
1252         int rc = -ENODEV;
1253
1254         wl3501_block_interrupt(this);
1255
1256         if (wl3501_init_firmware(this)) {
1257                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1258                        dev->name);
1259                 /* Free IRQ, and mark IRQ as unused */
1260                 free_irq(dev->irq, dev);
1261                 goto out;
1262         }
1263
1264         /*
1265          * Queue has to be started only when the Card is Started
1266          */
1267         netif_stop_queue(dev);
1268         this->adhoc_times = 0;
1269         wl3501_ack_interrupt(this);
1270         wl3501_unblock_interrupt(this);
1271         wl3501_mgmt_scan(this, 100);
1272         pr_debug("%s: device reset", dev->name);
1273         rc = 0;
1274 out:
1275         return rc;
1276 }
1277
1278 static void wl3501_tx_timeout(struct net_device *dev)
1279 {
1280         struct wl3501_card *this = netdev_priv(dev);
1281         struct net_device_stats *stats = &dev->stats;
1282         unsigned long flags;
1283         int rc;
1284
1285         stats->tx_errors++;
1286         spin_lock_irqsave(&this->lock, flags);
1287         rc = wl3501_reset(dev);
1288         spin_unlock_irqrestore(&this->lock, flags);
1289         if (rc)
1290                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1291                        dev->name, rc);
1292         else {
1293                 dev->trans_start = jiffies; /* prevent tx timeout */
1294                 netif_wake_queue(dev);
1295         }
1296 }
1297
1298 /*
1299  * Return : 0 - OK
1300  *          1 - Could not transmit (dev_queue_xmit will queue it)
1301  *              and try to sent it later
1302  */
1303 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1304                                                 struct net_device *dev)
1305 {
1306         int enabled, rc;
1307         struct wl3501_card *this = netdev_priv(dev);
1308         unsigned long flags;
1309
1310         spin_lock_irqsave(&this->lock, flags);
1311         enabled = wl3501_block_interrupt(this);
1312         rc = wl3501_send_pkt(this, skb->data, skb->len);
1313         if (enabled)
1314                 wl3501_unblock_interrupt(this);
1315         if (rc) {
1316                 ++dev->stats.tx_dropped;
1317                 netif_stop_queue(dev);
1318         } else {
1319                 ++dev->stats.tx_packets;
1320                 dev->stats.tx_bytes += skb->len;
1321                 kfree_skb(skb);
1322
1323                 if (this->tx_buffer_cnt < 2)
1324                         netif_stop_queue(dev);
1325         }
1326         spin_unlock_irqrestore(&this->lock, flags);
1327         return NETDEV_TX_OK;
1328 }
1329
1330 static int wl3501_open(struct net_device *dev)
1331 {
1332         int rc = -ENODEV;
1333         struct wl3501_card *this = netdev_priv(dev);
1334         unsigned long flags;
1335         struct pcmcia_device *link;
1336         link = this->p_dev;
1337
1338         spin_lock_irqsave(&this->lock, flags);
1339         if (!pcmcia_dev_present(link))
1340                 goto out;
1341         netif_device_attach(dev);
1342         link->open++;
1343
1344         /* Initial WL3501 firmware */
1345         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1346         if (wl3501_init_firmware(this))
1347                 goto fail;
1348         /* Initial device variables */
1349         this->adhoc_times = 0;
1350         /* Acknowledge Interrupt, for cleaning last state */
1351         wl3501_ack_interrupt(this);
1352
1353         /* Enable interrupt from card after all */
1354         wl3501_unblock_interrupt(this);
1355         wl3501_mgmt_scan(this, 100);
1356         rc = 0;
1357         pr_debug("%s: WL3501 opened", dev->name);
1358         printk(KERN_INFO "%s: Card Name: %s\n"
1359                          "%s: Firmware Date: %s\n",
1360                          dev->name, this->card_name,
1361                          dev->name, this->firmware_date);
1362 out:
1363         spin_unlock_irqrestore(&this->lock, flags);
1364         return rc;
1365 fail:
1366         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1367         goto out;
1368 }
1369
1370 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1371 {
1372         struct wl3501_card *this = netdev_priv(dev);
1373         struct iw_statistics *wstats = &this->wstats;
1374         u32 value; /* size checked: it is u32 */
1375
1376         memset(wstats, 0, sizeof(*wstats));
1377         wstats->status = netif_running(dev);
1378         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1379                                   &value, sizeof(value)))
1380                 wstats->discard.code += value;
1381         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1382                                   &value, sizeof(value)))
1383                 wstats->discard.code += value;
1384         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1385                                   &value, sizeof(value)))
1386                 wstats->discard.code += value;
1387         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1388                                   &value, sizeof(value)))
1389                 wstats->discard.retries = value;
1390         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1391                                   &value, sizeof(value)))
1392                 wstats->discard.misc += value;
1393         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1394                                   &value, sizeof(value)))
1395                 wstats->discard.misc += value;
1396         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1397                                   &value, sizeof(value)))
1398                 wstats->discard.misc += value;
1399         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1400                                   &value, sizeof(value)))
1401                 wstats->discard.misc += value;
1402         return wstats;
1403 }
1404
1405 /**
1406  * wl3501_detach - deletes a driver "instance"
1407  * @link - FILL_IN
1408  *
1409  * This deletes a driver "instance". The device is de-registered with Card
1410  * Services. If it has been released, all local data structures are freed.
1411  * Otherwise, the structures will be freed when the device is released.
1412  */
1413 static void wl3501_detach(struct pcmcia_device *link)
1414 {
1415         struct net_device *dev = link->priv;
1416
1417         /* If the device is currently configured and active, we won't actually
1418          * delete it yet.  Instead, it is marked so that when the release()
1419          * function is called, that will trigger a proper detach(). */
1420
1421         while (link->open > 0)
1422                 wl3501_close(dev);
1423
1424         netif_device_detach(dev);
1425         wl3501_release(link);
1426
1427         unregister_netdev(dev);
1428
1429         if (link->priv)
1430                 free_netdev(link->priv);
1431 }
1432
1433 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1434                            union iwreq_data *wrqu, char *extra)
1435 {
1436         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1437         return 0;
1438 }
1439
1440 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1441                            union iwreq_data *wrqu, char *extra)
1442 {
1443         struct wl3501_card *this = netdev_priv(dev);
1444         int channel = wrqu->freq.m;
1445         int rc = -EINVAL;
1446
1447         if (iw_valid_channel(this->reg_domain, channel)) {
1448                 this->chan = channel;
1449                 rc = wl3501_reset(dev);
1450         }
1451         return rc;
1452 }
1453
1454 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1455                            union iwreq_data *wrqu, char *extra)
1456 {
1457         struct wl3501_card *this = netdev_priv(dev);
1458
1459         wrqu->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1460         wrqu->freq.e = 1;
1461         return 0;
1462 }
1463
1464 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1465                            union iwreq_data *wrqu, char *extra)
1466 {
1467         int rc = -EINVAL;
1468
1469         if (wrqu->mode == IW_MODE_INFRA ||
1470             wrqu->mode == IW_MODE_ADHOC ||
1471             wrqu->mode == IW_MODE_AUTO) {
1472                 struct wl3501_card *this = netdev_priv(dev);
1473
1474                 this->net_type = wrqu->mode;
1475                 rc = wl3501_reset(dev);
1476         }
1477         return rc;
1478 }
1479
1480 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1481                            union iwreq_data *wrqu, char *extra)
1482 {
1483         struct wl3501_card *this = netdev_priv(dev);
1484
1485         wrqu->mode = this->net_type;
1486         return 0;
1487 }
1488
1489 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1490                            union iwreq_data *wrqu, char *extra)
1491 {
1492         struct wl3501_card *this = netdev_priv(dev);
1493
1494         wrqu->sens.value = this->rssi;
1495         wrqu->sens.disabled = !wrqu->sens.value;
1496         wrqu->sens.fixed = 1;
1497         return 0;
1498 }
1499
1500 static int wl3501_get_range(struct net_device *dev,
1501                             struct iw_request_info *info,
1502                             union iwreq_data *wrqu, char *extra)
1503 {
1504         struct iw_range *range = (struct iw_range *)extra;
1505
1506         /* Set the length (very important for backward compatibility) */
1507         wrqu->data.length = sizeof(*range);
1508
1509         /* Set all the info we don't care or don't know about to zero */
1510         memset(range, 0, sizeof(*range));
1511
1512         /* Set the Wireless Extension versions */
1513         range->we_version_compiled      = WIRELESS_EXT;
1514         range->we_version_source        = 1;
1515         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1516         /* FIXME: study the code to fill in more fields... */
1517         return 0;
1518 }
1519
1520 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1521                           union iwreq_data *wrqu, char *extra)
1522 {
1523         struct wl3501_card *this = netdev_priv(dev);
1524         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1525         int rc = -EINVAL;
1526
1527         /* FIXME: we support other ARPHRDs...*/
1528         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1529                 goto out;
1530         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1531                 /* FIXME: rescan? */
1532         } else
1533                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1534                 /* FIXME: rescan? deassoc & scan? */
1535         rc = 0;
1536 out:
1537         return rc;
1538 }
1539
1540 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1541                           union iwreq_data *wrqu, char *extra)
1542 {
1543         struct wl3501_card *this = netdev_priv(dev);
1544
1545         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1546         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1547         return 0;
1548 }
1549
1550 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1551                            union iwreq_data *wrqu, char *extra)
1552 {
1553         /*
1554          * FIXME: trigger scanning with a reset, yes, I'm lazy
1555          */
1556         return wl3501_reset(dev);
1557 }
1558
1559 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1560                            union iwreq_data *wrqu, char *extra)
1561 {
1562         struct wl3501_card *this = netdev_priv(dev);
1563         int i;
1564         char *current_ev = extra;
1565         struct iw_event iwe;
1566
1567         for (i = 0; i < this->bss_cnt; ++i) {
1568                 iwe.cmd                 = SIOCGIWAP;
1569                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1570                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1571                 current_ev = iwe_stream_add_event(info, current_ev,
1572                                                   extra + IW_SCAN_MAX_DATA,
1573                                                   &iwe, IW_EV_ADDR_LEN);
1574                 iwe.cmd           = SIOCGIWESSID;
1575                 iwe.u.data.flags  = 1;
1576                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1577                 current_ev = iwe_stream_add_point(info, current_ev,
1578                                                   extra + IW_SCAN_MAX_DATA,
1579                                                   &iwe,
1580                                                   this->bss_set[i].ssid.essid);
1581                 iwe.cmd    = SIOCGIWMODE;
1582                 iwe.u.mode = this->bss_set[i].bss_type;
1583                 current_ev = iwe_stream_add_event(info, current_ev,
1584                                                   extra + IW_SCAN_MAX_DATA,
1585                                                   &iwe, IW_EV_UINT_LEN);
1586                 iwe.cmd = SIOCGIWFREQ;
1587                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1588                 iwe.u.freq.e = 0;
1589                 current_ev = iwe_stream_add_event(info, current_ev,
1590                                                   extra + IW_SCAN_MAX_DATA,
1591                                                   &iwe, IW_EV_FREQ_LEN);
1592                 iwe.cmd = SIOCGIWENCODE;
1593                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1594                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1595                 else
1596                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1597                 iwe.u.data.length = 0;
1598                 current_ev = iwe_stream_add_point(info, current_ev,
1599                                                   extra + IW_SCAN_MAX_DATA,
1600                                                   &iwe, NULL);
1601         }
1602         /* Length of data */
1603         wrqu->data.length = (current_ev - extra);
1604         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1605         return 0;
1606 }
1607
1608 static int wl3501_set_essid(struct net_device *dev,
1609                             struct iw_request_info *info,
1610                             union iwreq_data *wrqu, char *extra)
1611 {
1612         struct wl3501_card *this = netdev_priv(dev);
1613
1614         if (wrqu->data.flags) {
1615                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1616                                          &this->essid.el,
1617                                          extra, wrqu->data.length);
1618         } else { /* We accept any ESSID */
1619                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1620                                          &this->essid.el, "ANY", 3);
1621         }
1622         return wl3501_reset(dev);
1623 }
1624
1625 static int wl3501_get_essid(struct net_device *dev,
1626                             struct iw_request_info *info,
1627                             union iwreq_data *wrqu, char *extra)
1628 {
1629         struct wl3501_card *this = netdev_priv(dev);
1630         unsigned long flags;
1631
1632         spin_lock_irqsave(&this->lock, flags);
1633         wrqu->essid.flags  = 1;
1634         wrqu->essid.length = this->essid.el.len;
1635         memcpy(extra, this->essid.essid, this->essid.el.len);
1636         spin_unlock_irqrestore(&this->lock, flags);
1637         return 0;
1638 }
1639
1640 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1641                            union iwreq_data *wrqu, char *extra)
1642 {
1643         struct wl3501_card *this = netdev_priv(dev);
1644
1645         if (wrqu->data.length > sizeof(this->nick))
1646                 return -E2BIG;
1647         strlcpy(this->nick, extra, wrqu->data.length);
1648         return 0;
1649 }
1650
1651 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1652                            union iwreq_data *wrqu, char *extra)
1653 {
1654         struct wl3501_card *this = netdev_priv(dev);
1655
1656         strlcpy(extra, this->nick, 32);
1657         wrqu->data.length = strlen(extra);
1658         return 0;
1659 }
1660
1661 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1662                            union iwreq_data *wrqu, char *extra)
1663 {
1664         /*
1665          * FIXME: have to see from where to get this info, perhaps this card
1666          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1667          * common with the Planet Access Points. -acme
1668          */
1669         wrqu->bitrate.value = 2000000;
1670         wrqu->bitrate.fixed = 1;
1671         return 0;
1672 }
1673
1674 static int wl3501_get_rts_threshold(struct net_device *dev,
1675                                     struct iw_request_info *info,
1676                                     union iwreq_data *wrqu, char *extra)
1677 {
1678         u16 threshold; /* size checked: it is u16 */
1679         struct wl3501_card *this = netdev_priv(dev);
1680         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1681                                       &threshold, sizeof(threshold));
1682         if (!rc) {
1683                 wrqu->rts.value = threshold;
1684                 wrqu->rts.disabled = threshold >= 2347;
1685                 wrqu->rts.fixed = 1;
1686         }
1687         return rc;
1688 }
1689
1690 static int wl3501_get_frag_threshold(struct net_device *dev,
1691                                      struct iw_request_info *info,
1692                                      union iwreq_data *wrqu, char *extra)
1693 {
1694         u16 threshold; /* size checked: it is u16 */
1695         struct wl3501_card *this = netdev_priv(dev);
1696         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1697                                       &threshold, sizeof(threshold));
1698         if (!rc) {
1699                 wrqu->frag.value = threshold;
1700                 wrqu->frag.disabled = threshold >= 2346;
1701                 wrqu->frag.fixed = 1;
1702         }
1703         return rc;
1704 }
1705
1706 static int wl3501_get_txpow(struct net_device *dev,
1707                             struct iw_request_info *info,
1708                             union iwreq_data *wrqu, char *extra)
1709 {
1710         u16 txpow;
1711         struct wl3501_card *this = netdev_priv(dev);
1712         int rc = wl3501_get_mib_value(this,
1713                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1714                                       &txpow, sizeof(txpow));
1715         if (!rc) {
1716                 wrqu->txpower.value = txpow;
1717                 wrqu->txpower.disabled = 0;
1718                 /*
1719                  * From the MIB values I think this can be configurable,
1720                  * as it lists several tx power levels -acme
1721                  */
1722                 wrqu->txpower.fixed = 0;
1723                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1724         }
1725         return rc;
1726 }
1727
1728 static int wl3501_get_retry(struct net_device *dev,
1729                             struct iw_request_info *info,
1730                             union iwreq_data *wrqu, char *extra)
1731 {
1732         u8 retry; /* size checked: it is u8 */
1733         struct wl3501_card *this = netdev_priv(dev);
1734         int rc = wl3501_get_mib_value(this,
1735                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1736                                       &retry, sizeof(retry));
1737         if (rc)
1738                 goto out;
1739         if (wrqu->retry.flags & IW_RETRY_LONG) {
1740                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1741                 goto set_value;
1742         }
1743         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1744                                   &retry, sizeof(retry));
1745         if (rc)
1746                 goto out;
1747         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1748 set_value:
1749         wrqu->retry.value = retry;
1750         wrqu->retry.disabled = 0;
1751 out:
1752         return rc;
1753 }
1754
1755 static int wl3501_get_encode(struct net_device *dev,
1756                              struct iw_request_info *info,
1757                              union iwreq_data *wrqu, char *extra)
1758 {
1759         u8 implemented, restricted, keys[100], len_keys, tocopy;
1760         struct wl3501_card *this = netdev_priv(dev);
1761         int rc = wl3501_get_mib_value(this,
1762                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1763                                       &implemented, sizeof(implemented));
1764         if (rc)
1765                 goto out;
1766         if (!implemented) {
1767                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1768                 goto out;
1769         }
1770         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1771                                   &restricted, sizeof(restricted));
1772         if (rc)
1773                 goto out;
1774         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1775                                             IW_ENCODE_OPEN;
1776         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1777                                   &len_keys, sizeof(len_keys));
1778         if (rc)
1779                 goto out;
1780         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1781                                   keys, len_keys);
1782         if (rc)
1783                 goto out;
1784         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1785         tocopy = min_t(u8, tocopy, 100);
1786         wrqu->encoding.length = tocopy;
1787         memcpy(extra, keys, tocopy);
1788 out:
1789         return rc;
1790 }
1791
1792 static int wl3501_get_power(struct net_device *dev,
1793                             struct iw_request_info *info,
1794                             union iwreq_data *wrqu, char *extra)
1795 {
1796         u8 pwr_state;
1797         struct wl3501_card *this = netdev_priv(dev);
1798         int rc = wl3501_get_mib_value(this,
1799                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1800                                       &pwr_state, sizeof(pwr_state));
1801         if (rc)
1802                 goto out;
1803         wrqu->power.disabled = !pwr_state;
1804         wrqu->power.flags = IW_POWER_ON;
1805 out:
1806         return rc;
1807 }
1808
1809 static const iw_handler wl3501_handler[] = {
1810         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1811         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1812         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1813         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1814         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1815         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1816         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1817         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1818         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1819         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1820         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1821         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1822         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1823         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1824         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1825         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1826         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1827         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1828         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1829         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1830         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1831         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1832         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1833         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1834         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1835         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1836 };
1837
1838 static const struct iw_handler_def wl3501_handler_def = {
1839         .num_standard   = ARRAY_SIZE(wl3501_handler),
1840         .standard       = (iw_handler *)wl3501_handler,
1841         .get_wireless_stats = wl3501_get_wireless_stats,
1842 };
1843
1844 static const struct net_device_ops wl3501_netdev_ops = {
1845         .ndo_open               = wl3501_open,
1846         .ndo_stop               = wl3501_close,
1847         .ndo_start_xmit         = wl3501_hard_start_xmit,
1848         .ndo_tx_timeout         = wl3501_tx_timeout,
1849         .ndo_change_mtu         = eth_change_mtu,
1850         .ndo_set_mac_address    = eth_mac_addr,
1851         .ndo_validate_addr      = eth_validate_addr,
1852 };
1853
1854 static int wl3501_probe(struct pcmcia_device *p_dev)
1855 {
1856         struct net_device *dev;
1857         struct wl3501_card *this;
1858
1859         /* The io structure describes IO port mapping */
1860         p_dev->resource[0]->end = 16;
1861         p_dev->resource[0]->flags       = IO_DATA_PATH_WIDTH_8;
1862
1863         /* General socket configuration */
1864         p_dev->config_flags     = CONF_ENABLE_IRQ;
1865         p_dev->config_index     = 1;
1866
1867         dev = alloc_etherdev(sizeof(struct wl3501_card));
1868         if (!dev)
1869                 goto out_link;
1870
1871
1872         dev->netdev_ops         = &wl3501_netdev_ops;
1873         dev->watchdog_timeo     = 5 * HZ;
1874
1875         this = netdev_priv(dev);
1876         this->wireless_data.spy_data = &this->spy_data;
1877         this->p_dev = p_dev;
1878         dev->wireless_data      = &this->wireless_data;
1879         dev->wireless_handlers  = &wl3501_handler_def;
1880         netif_stop_queue(dev);
1881         p_dev->priv = dev;
1882
1883         return wl3501_config(p_dev);
1884 out_link:
1885         return -ENOMEM;
1886 }
1887
1888 static int wl3501_config(struct pcmcia_device *link)
1889 {
1890         struct net_device *dev = link->priv;
1891         int i = 0, j, ret;
1892         struct wl3501_card *this;
1893
1894         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1895          * want, you can also read the card's config table to pick addresses --
1896          * see the serial driver for an example. */
1897         link->io_lines = 5;
1898
1899         for (j = 0x280; j < 0x400; j += 0x20) {
1900                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1901                  * 0x200-0x2ff, and so on, because this seems safer */
1902                 link->resource[0]->start = j;
1903                 link->resource[1]->start = link->resource[0]->start + 0x10;
1904                 i = pcmcia_request_io(link);
1905                 if (i == 0)
1906                         break;
1907         }
1908         if (i != 0)
1909                 goto failed;
1910
1911         /* Now allocate an interrupt line. Note that this does not actually
1912          * assign a handler to the interrupt. */
1913
1914         ret = pcmcia_request_irq(link, wl3501_interrupt);
1915         if (ret)
1916                 goto failed;
1917
1918         ret = pcmcia_enable_device(link);
1919         if (ret)
1920                 goto failed;
1921
1922         dev->irq = link->irq;
1923         dev->base_addr = link->resource[0]->start;
1924         SET_NETDEV_DEV(dev, &link->dev);
1925         if (register_netdev(dev)) {
1926                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1927                 goto failed;
1928         }
1929
1930         this = netdev_priv(dev);
1931
1932         this->base_addr = dev->base_addr;
1933
1934         if (!wl3501_get_flash_mac_addr(this)) {
1935                 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1936                        dev->name);
1937                 unregister_netdev(dev);
1938                 goto failed;
1939         }
1940
1941         for (i = 0; i < 6; i++)
1942                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1943
1944         /* print probe information */
1945         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1946                "MAC addr in flash ROM:%pM\n",
1947                dev->name, this->base_addr, (int)dev->irq,
1948                dev->dev_addr);
1949         /*
1950          * Initialize card parameters - added by jss
1951          */
1952         this->net_type          = IW_MODE_INFRA;
1953         this->bss_cnt           = 0;
1954         this->join_sta_bss      = 0;
1955         this->adhoc_times       = 0;
1956         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1957                                  "ANY", 3);
1958         this->card_name[0]      = '\0';
1959         this->firmware_date[0]  = '\0';
1960         this->rssi              = 255;
1961         this->chan              = iw_default_channel(this->reg_domain);
1962         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1963         spin_lock_init(&this->lock);
1964         init_waitqueue_head(&this->wait);
1965         netif_start_queue(dev);
1966         return 0;
1967
1968 failed:
1969         wl3501_release(link);
1970         return -ENODEV;
1971 }
1972
1973 static void wl3501_release(struct pcmcia_device *link)
1974 {
1975         pcmcia_disable_device(link);
1976 }
1977
1978 static int wl3501_suspend(struct pcmcia_device *link)
1979 {
1980         struct net_device *dev = link->priv;
1981
1982         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1983         if (link->open)
1984                 netif_device_detach(dev);
1985
1986         return 0;
1987 }
1988
1989 static int wl3501_resume(struct pcmcia_device *link)
1990 {
1991         struct net_device *dev = link->priv;
1992
1993         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
1994         if (link->open) {
1995                 wl3501_reset(dev);
1996                 netif_device_attach(dev);
1997         }
1998
1999         return 0;
2000 }
2001
2002
2003 static struct pcmcia_device_id wl3501_ids[] = {
2004         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2005         PCMCIA_DEVICE_NULL
2006 };
2007 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2008
2009 static struct pcmcia_driver wl3501_driver = {
2010         .owner          = THIS_MODULE,
2011         .name           = "wl3501_cs",
2012         .probe          = wl3501_probe,
2013         .remove         = wl3501_detach,
2014         .id_table       = wl3501_ids,
2015         .suspend        = wl3501_suspend,
2016         .resume         = wl3501_resume,
2017 };
2018
2019 static int __init wl3501_init_module(void)
2020 {
2021         return pcmcia_register_driver(&wl3501_driver);
2022 }
2023
2024 static void __exit wl3501_exit_module(void)
2025 {
2026         pcmcia_unregister_driver(&wl3501_driver);
2027 }
2028
2029 module_init(wl3501_init_module);
2030 module_exit(wl3501_exit_module);
2031
2032 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2033               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2034               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2035 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2036 MODULE_LICENSE("GPL");