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