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/ethtool.h>
  33 #include <linux/init.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/in.h>
  36 #include <linux/kernel.h>
  37 #include <linux/module.h>
  38 #include <linux/fcntl.h>
  39 #include <linux/if_arp.h>
  40 #include <linux/ioport.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/skbuff.h>
  44 #include <linux/slab.h>
  45 #include <linux/string.h>
  46 #include <linux/wireless.h>
  47 #include <linux/ieee80211.h>
  48
  49 #include <net/iw_handler.h>
  50
  51 #include <pcmcia/cs_types.h>
  52 #include <pcmcia/cs.h>
  53 #include <pcmcia/cistpl.h>
  54 #include <pcmcia/cisreg.h>
  55 #include <pcmcia/ds.h>
  56
  57 #include <asm/io.h>
  58 #include <asm/uaccess.h>
  59 #include <asm/system.h>
  60
  61 #include "wl3501.h"
  62
  63 #ifndef __i386__
  64 #define slow_down_io()
  65 #endif
  66
  67 /* For rough constant delay */
  68 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  69
  70
  71
  72 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  73 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  74 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  75
  76 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  77 #define WL3501_MAX_ADHOC_TRIES 16
  78
  79 #define WL3501_RESUME   0
  80 #define WL3501_SUSPEND  1
  81
  82 /*
  83  * The event() function is this driver's Card Services event handler.  It will
  84  * be called by Card Services when an appropriate card status event is
  85  * received. The config() and release() entry points are used to configure or
  86  * release a socket, in response to card insertion and ejection events.  They
  87  * are invoked from the wl24 event handler.
  88  */
  89 static int wl3501_config(struct pcmcia_device *link);
  90 static void wl3501_release(struct pcmcia_device *link);
  91
  92 /*
  93  * The dev_info variable is the "key" that is used to match up this
  94  * device driver with appropriate cards, through the card configuration
  95  * database.
  96  */
  97 static dev_info_t wl3501_dev_info = "wl3501_cs";
  98
  99 static const struct {
 100         int reg_domain;
 101         int min, max, deflt;
 102 } iw_channel_table[] = {
 103         {
 104                 .reg_domain = IW_REG_DOMAIN_FCC,
 105                 .min        = 1,
 106                 .max        = 11,
 107                 .deflt      = 1,
 108         },
 109         {
 110                 .reg_domain = IW_REG_DOMAIN_DOC,
 111                 .min        = 1,
 112                 .max        = 11,
 113                 .deflt      = 1,
 114         },
 115         {
 116                 .reg_domain = IW_REG_DOMAIN_ETSI,
 117                 .min        = 1,
 118                 .max        = 13,
 119                 .deflt      = 1,
 120         },
 121         {
 122                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 123                 .min        = 10,
 124                 .max        = 11,
 125                 .deflt      = 10,
 126         },
 127         {
 128                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 129                 .min        = 10,
 130                 .max        = 13,
 131                 .deflt      = 10,
 132         },
 133         {
 134                 .reg_domain = IW_REG_DOMAIN_MKK,
 135                 .min        = 14,
 136                 .max        = 14,
 137                 .deflt      = 14,
 138         },
 139         {
 140                 .reg_domain = IW_REG_DOMAIN_MKK1,
 141                 .min        = 1,
 142                 .max        = 14,
 143                 .deflt      = 1,
 144         },
 145         {
 146                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 147                 .min        = 3,
 148                 .max        = 9,
 149                 .deflt      = 9,
 150         },
 151 };
 152
 153 /**
 154  * iw_valid_channel - validate channel in regulatory domain
 155  * @reg_comain - regulatory domain
 156  * @channel - channel to validate
 157  *
 158  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 159  */
 160 static int iw_valid_channel(int reg_domain, int channel)
 161 {
 162         int i, rc = 0;
 163
 164         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 165                 if (reg_domain == iw_channel_table[i].reg_domain) {
 166                         rc = channel >= iw_channel_table[i].min &&
 167                              channel <= iw_channel_table[i].max;
 168                         break;
 169                 }
 170         return rc;
 171 }
 172
 173 /**
 174  * iw_default_channel - get default channel for a regulatory domain
 175  * @reg_comain - regulatory domain
 176  *
 177  * Returns the default channel for a regulatory domain
 178  */
 179 static int iw_default_channel(int reg_domain)
 180 {
 181         int i, rc = 1;
 182
 183         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 184                 if (reg_domain == iw_channel_table[i].reg_domain) {
 185                         rc = iw_channel_table[i].deflt;
 186                         break;
 187                 }
 188         return rc;
 189 }
 190
 191 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 192                                      struct iw_mgmt_info_element *el,
 193                                      void *value, int len)
 194 {
 195         el->id  = id;
 196         el->len = len;
 197         memcpy(el->data, value, len);
 198 }
 199
 200 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 201                                       struct iw_mgmt_info_element *from)
 202 {
 203         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 204 }
 205
 206 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 207 {
 208         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 209 }
 210
 211 /*
 212  * Get Ethernet MAC addresss.
 213  *
 214  * WARNING: We switch to FPAGE0 and switc back again.
 215  *          Making sure there is no other WL function beening called by ISR.
 216  */
 217 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 218 {
 219         int base_addr = this->base_addr;
 220
 221         /* get MAC addr */
 222         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 223         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 224         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 225
 226         /* wait for reading EEPROM */
 227         WL3501_NOPLOOP(100);
 228         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 229         WL3501_NOPLOOP(100);
 230         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 231         WL3501_NOPLOOP(100);
 232         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 233         WL3501_NOPLOOP(100);
 234         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 235         WL3501_NOPLOOP(100);
 236         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 237         WL3501_NOPLOOP(100);
 238         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 239         WL3501_NOPLOOP(100);
 240         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 241         WL3501_NOPLOOP(100);
 242         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 243         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 244         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 245         WL3501_NOPLOOP(100);
 246         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 247         WL3501_NOPLOOP(100);
 248         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 249         /* switch to SRAM Page 0 (for safety) */
 250         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 251
 252         /* The MAC addr should be 00:60:... */
 253         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 254 }
 255
 256 /**
 257  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 258  * @dest: Card addressing space
 259  * @src: PC addressing space
 260  * @size: Bytes to move
 261  *
 262  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 263  */
 264 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 265                               int size)
 266 {
 267         /* switch to SRAM Page 0 */
 268         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 269                                                    WL3501_BSS_SPAGE0);
 270         /* set LMAL and LMAH */
 271         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 272         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 273
 274         /* rep out to Port A */
 275         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 276 }
 277
 278 /**
 279  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 280  * @src: Card addressing space
 281  * @dest: PC addressing space
 282  * @size: Bytes to move
 283  *
 284  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 285  */
 286 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 287                                 int size)
 288 {
 289         /* switch to SRAM Page 0 */
 290         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 291                                                   WL3501_BSS_SPAGE0);
 292         /* set LMAL and LMAH */
 293         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 294         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 295
 296         /* rep get from Port A */
 297         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 298 }
 299
 300 /*
 301  * Get/Allocate a free Tx Data Buffer
 302  *
 303  *  *--------------*-----------------*----------------------------------*
 304  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 305  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 306  *  *--------------*-----------------*----------------------------------*
 307  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 308  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 309  *
 310  * Return = Postion in Card
 311  */
 312 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 313 {
 314         u16 next, blk_cnt = 0, zero = 0;
 315         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 316         u16 ret = 0;
 317
 318         if (full_len > this->tx_buffer_cnt * 254)
 319                 goto out;
 320         ret = this->tx_buffer_head;
 321         while (full_len) {
 322                 if (full_len < 254)
 323                         full_len = 0;
 324                 else
 325                         full_len -= 254;
 326                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 327                                     sizeof(next));
 328                 if (!full_len)
 329                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 330                                           sizeof(zero));
 331                 this->tx_buffer_head = next;
 332                 blk_cnt++;
 333                 /* if buffer is not enough */
 334                 if (!next && full_len) {
 335                         this->tx_buffer_head = ret;
 336                         ret = 0;
 337                         goto out;
 338                 }
 339         }
 340         this->tx_buffer_cnt -= blk_cnt;
 341 out:
 342         return ret;
 343 }
 344
 345 /*
 346  * Free an allocated Tx Buffer. ptr must be correct position.
 347  */
 348 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 349 {
 350         /* check if all space is not free */
 351         if (!this->tx_buffer_head)
 352                 this->tx_buffer_head = ptr;
 353         else
 354                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 355                                   &ptr, sizeof(ptr));
 356         while (ptr) {
 357                 u16 next;
 358
 359                 this->tx_buffer_cnt++;
 360                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 361                 this->tx_buffer_tail = ptr;
 362                 ptr = next;
 363         }
 364 }
 365
 366 static int wl3501_esbq_req_test(struct wl3501_card *this)
 367 {
 368         u8 tmp = 0;
 369
 370         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 371         return tmp & 0x80;
 372 }
 373
 374 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 375 {
 376         u16 tmp = 0;
 377
 378         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 379         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 380         this->esbq_req_head += 4;
 381         if (this->esbq_req_head >= this->esbq_req_end)
 382                 this->esbq_req_head = this->esbq_req_start;
 383 }
 384
 385 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 386 {
 387         int rc = -EIO;
 388
 389         if (wl3501_esbq_req_test(this)) {
 390                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 391                 if (ptr) {
 392                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 393                         wl3501_esbq_req(this, &ptr);
 394                         rc = 0;
 395                 }
 396         }
 397         return rc;
 398 }
 399
 400 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 401                                 void *bf, int size)
 402 {
 403         struct wl3501_get_req sig = {
 404                 .sig_id     = WL3501_SIG_GET_REQ,
 405                 .mib_attrib = index,
 406         };
 407         unsigned long flags;
 408         int rc = -EIO;
 409
 410         spin_lock_irqsave(&this->lock, flags);
 411         if (wl3501_esbq_req_test(this)) {
 412                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 413                 if (ptr) {
 414                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 415                         wl3501_esbq_req(this, &ptr);
 416                         this->sig_get_confirm.mib_status = 255;
 417                         spin_unlock_irqrestore(&this->lock, flags);
 418                         rc = wait_event_interruptible(this->wait,
 419                                 this->sig_get_confirm.mib_status != 255);
 420                         if (!rc)
 421                                 memcpy(bf, this->sig_get_confirm.mib_value,
 422                                        size);
 423                         goto out;
 424                 }
 425         }
 426         spin_unlock_irqrestore(&this->lock, flags);
 427 out:
 428         return rc;
 429 }
 430
 431 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 432 {
 433         struct wl3501_pwr_mgmt_req sig = {
 434                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 435                 .pwr_save       = suspend,
 436                 .wake_up        = !suspend,
 437                 .receive_dtims  = 10,
 438         };
 439         unsigned long flags;
 440         int rc = -EIO;
 441
 442         spin_lock_irqsave(&this->lock, flags);
 443         if (wl3501_esbq_req_test(this)) {
 444                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 445                 if (ptr) {
 446                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 447                         wl3501_esbq_req(this, &ptr);
 448                         this->sig_pwr_mgmt_confirm.status = 255;
 449                         spin_unlock_irqrestore(&this->lock, flags);
 450                         rc = wait_event_interruptible(this->wait,
 451                                 this->sig_pwr_mgmt_confirm.status != 255);
 452                         printk(KERN_INFO "%s: %s status=%d\n", __func__,
 453                                suspend ? "suspend" : "resume",
 454                                this->sig_pwr_mgmt_confirm.status);
 455                         goto out;
 456                 }
 457         }
 458         spin_unlock_irqrestore(&this->lock, flags);
 459 out:
 460         return rc;
 461 }
 462
 463 /**
 464  * wl3501_send_pkt - Send a packet.
 465  * @this - card
 466  *
 467  * Send a packet.
 468  *
 469  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 470  *                                   data[6] - data[11] is Src MAC Addr)
 471  * Ref: IEEE 802.11
 472  */
 473 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 474 {
 475         u16 bf, sig_bf, next, tmplen, pktlen;
 476         struct wl3501_md_req sig = {
 477                 .sig_id = WL3501_SIG_MD_REQ,
 478         };
 479         u8 *pdata = (char *)data;
 480         int rc = -EIO;
 481
 482         if (wl3501_esbq_req_test(this)) {
 483                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 484                 rc = -ENOMEM;
 485                 if (!sig_bf)    /* No free buffer available */
 486                         goto out;
 487                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 488                 if (!bf) {
 489                         /* No free buffer available */
 490                         wl3501_free_tx_buffer(this, sig_bf);
 491                         goto out;
 492                 }
 493                 rc = 0;
 494                 memcpy(&sig.daddr[0], pdata, 12);
 495                 pktlen = len - 12;
 496                 pdata += 12;
 497                 sig.data = bf;
 498                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 499                         u8 addr4[ETH_ALEN] = {
 500                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 501                         };
 502
 503                         wl3501_set_to_wla(this, bf + 2 +
 504                                           offsetof(struct wl3501_tx_hdr, addr4),
 505                                           addr4, sizeof(addr4));
 506                         sig.size = pktlen + 24 + 4 + 6;
 507                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 508                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 509                                 pktlen -= tmplen;
 510                         } else {
 511                                 tmplen = pktlen;
 512                                 pktlen = 0;
 513                         }
 514                         wl3501_set_to_wla(this,
 515                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 516                                           pdata, tmplen);
 517                         pdata += tmplen;
 518                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 519                         bf = next;
 520                 } else {
 521                         sig.size = pktlen + 24 + 4 - 2;
 522                         pdata += 2;
 523                         pktlen -= 2;
 524                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 525                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 526                                 pktlen -= tmplen;
 527                         } else {
 528                                 tmplen = pktlen;
 529                                 pktlen = 0;
 530                         }
 531                         wl3501_set_to_wla(this, bf + 2 +
 532                                           offsetof(struct wl3501_tx_hdr, addr4),
 533                                           pdata, tmplen);
 534                         pdata += tmplen;
 535                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 536                         bf = next;
 537                 }
 538                 while (pktlen > 0) {
 539                         if (pktlen > 254) {
 540                                 tmplen = 254;
 541                                 pktlen -= 254;
 542                         } else {
 543                                 tmplen = pktlen;
 544                                 pktlen = 0;
 545                         }
 546                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 547                         pdata += tmplen;
 548                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 549                         bf = next;
 550                 }
 551                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 552                 wl3501_esbq_req(this, &sig_bf);
 553         }
 554 out:
 555         return rc;
 556 }
 557
 558 static int wl3501_mgmt_resync(struct wl3501_card *this)
 559 {
 560         struct wl3501_resync_req sig = {
 561                 .sig_id = WL3501_SIG_RESYNC_REQ,
 562         };
 563
 564         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 565 }
 566
 567 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 568 {
 569         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 570                                                  WL3501_NET_TYPE_ADHOC;
 571 }
 572
 573 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 574 {
 575         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 576                                                  WL3501_MGMT_CAPABILITY_IBSS;
 577 }
 578
 579 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 580 {
 581         struct wl3501_scan_req sig = {
 582                 .sig_id         = WL3501_SIG_SCAN_REQ,
 583                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 584                 .probe_delay    = 0x10,
 585                 .min_chan_time  = chan_time,
 586                 .max_chan_time  = chan_time,
 587                 .bss_type       = wl3501_fw_bss_type(this),
 588         };
 589
 590         this->bss_cnt = this->join_sta_bss = 0;
 591         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 592 }
 593
 594 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 595 {
 596         struct wl3501_join_req sig = {
 597                 .sig_id           = WL3501_SIG_JOIN_REQ,
 598                 .timeout          = 10,
 599                 .ds_pset = {
 600                         .el = {
 601                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 602                                 .len = 1,
 603                         },
 604                         .chan   = this->chan,
 605                 },
 606         };
 607
 608         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 609         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 610 }
 611
 612 static int wl3501_mgmt_start(struct wl3501_card *this)
 613 {
 614         struct wl3501_start_req sig = {
 615                 .sig_id                 = WL3501_SIG_START_REQ,
 616                 .beacon_period          = 400,
 617                 .dtim_period            = 1,
 618                 .ds_pset = {
 619                         .el = {
 620                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 621                                 .len = 1,
 622                         },
 623                         .chan   = this->chan,
 624                 },
 625                 .bss_basic_rset = {
 626                         .el = {
 627                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 628                                 .len = 2,
 629                         },
 630                         .data_rate_labels = {
 631                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 632                                       IW_MGMT_RATE_LABEL_1MBIT,
 633                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 634                                       IW_MGMT_RATE_LABEL_2MBIT,
 635                         },
 636                 },
 637                 .operational_rset       = {
 638                         .el = {
 639                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 640                                 .len = 2,
 641                         },
 642                         .data_rate_labels = {
 643                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 644                                       IW_MGMT_RATE_LABEL_1MBIT,
 645                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 646                                       IW_MGMT_RATE_LABEL_2MBIT,
 647                         },
 648                 },
 649                 .ibss_pset              = {
 650                         .el = {
 651                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 652                                 .len     = 2,
 653                         },
 654                         .atim_window = 10,
 655                 },
 656                 .bss_type               = wl3501_fw_bss_type(this),
 657                 .cap_info               = wl3501_fw_cap_info(this),
 658         };
 659
 660         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 661         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 662         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 663 }
 664
 665 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 666 {
 667         u16 i = 0;
 668         int matchflag = 0;
 669         struct wl3501_scan_confirm sig;
 670
 671         pr_debug("entry");
 672         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 673         if (sig.status == WL3501_STATUS_SUCCESS) {
 674                 pr_debug("success");
 675                 if ((this->net_type == IW_MODE_INFRA &&
 676                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 677                     (this->net_type == IW_MODE_ADHOC &&
 678                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 679                     this->net_type == IW_MODE_AUTO) {
 680                         if (!this->essid.el.len)
 681                                 matchflag = 1;
 682                         else if (this->essid.el.len == 3 &&
 683                                  !memcmp(this->essid.essid, "ANY", 3))
 684                                 matchflag = 1;
 685                         else if (this->essid.el.len != sig.ssid.el.len)
 686                                 matchflag = 0;
 687                         else if (memcmp(this->essid.essid, sig.ssid.essid,
 688                                         this->essid.el.len))
 689                                 matchflag = 0;
 690                         else
 691                                 matchflag = 1;
 692                         if (matchflag) {
 693                                 for (i = 0; i < this->bss_cnt; i++) {
 694                                         if (!memcmp(this->bss_set[i].bssid,
 695                                                     sig.bssid, ETH_ALEN)) {
 696                                                 matchflag = 0;
 697                                                 break;
 698                                         }
 699                                 }
 700                         }
 701                         if (matchflag && (i < 20)) {
 702                                 memcpy(&this->bss_set[i].beacon_period,
 703                                        &sig.beacon_period, 73);
 704                                 this->bss_cnt++;
 705                                 this->rssi = sig.rssi;
 706                         }
 707                 }
 708         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 709                 pr_debug("timeout");
 710                 this->join_sta_bss = 0;
 711                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 712                         if (!wl3501_mgmt_join(this, i))
 713                                 break;
 714                 this->join_sta_bss = i;
 715                 if (this->join_sta_bss == this->bss_cnt) {
 716                         if (this->net_type == IW_MODE_INFRA)
 717                                 wl3501_mgmt_scan(this, 100);
 718                         else {
 719                                 this->adhoc_times++;
 720                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 721                                         wl3501_mgmt_start(this);
 722                                 else
 723                                         wl3501_mgmt_scan(this, 100);
 724                         }
 725                 }
 726         }
 727 }
 728
 729 /**
 730  * wl3501_block_interrupt - Mask interrupt from SUTRO
 731  * @this - card
 732  *
 733  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 734  * Return: 1 if interrupt is originally enabled
 735  */
 736 static int wl3501_block_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_unblock_interrupt - Enable interrupt from SUTRO
 748  * @this - card
 749  *
 750  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 751  * Return: 1 if interrupt is originally enabled
 752  */
 753 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 754 {
 755         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 756         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 757                   WL3501_GCR_ENECINT;
 758
 759         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 760         return old & WL3501_GCR_ENECINT;
 761 }
 762
 763 /**
 764  * wl3501_receive - Receive data from Receive Queue.
 765  *
 766  * Receive data from Receive Queue.
 767  *
 768  * @this: card
 769  * @bf: address of host
 770  * @size: size of buffer.
 771  */
 772 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 773 {
 774         u16 next_addr, next_addr1;
 775         u8 *data = bf + 12;
 776
 777         size -= 12;
 778         wl3501_get_from_wla(this, this->start_seg + 2,
 779                             &next_addr, sizeof(next_addr));
 780         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 781                 wl3501_get_from_wla(this,
 782                                     this->start_seg +
 783                                         sizeof(struct wl3501_rx_hdr), data,
 784                                     WL3501_BLKSZ -
 785                                         sizeof(struct wl3501_rx_hdr));
 786                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 787                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 788         } else {
 789                 wl3501_get_from_wla(this,
 790                                     this->start_seg +
 791                                         sizeof(struct wl3501_rx_hdr),
 792                                     data, size);
 793                 size = 0;
 794         }
 795         while (size > 0) {
 796                 if (size > WL3501_BLKSZ - 5) {
 797                         wl3501_get_from_wla(this, next_addr + 5, data,
 798                                             WL3501_BLKSZ - 5);
 799                         size -= WL3501_BLKSZ - 5;
 800                         data += WL3501_BLKSZ - 5;
 801                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 802                                             sizeof(next_addr1));
 803                         next_addr = next_addr1;
 804                 } else {
 805                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 806                         size = 0;
 807                 }
 808         }
 809         return 0;
 810 }
 811
 812 static void wl3501_esbq_req_free(struct wl3501_card *this)
 813 {
 814         u8 tmp;
 815         u16 addr;
 816
 817         if (this->esbq_req_head == this->esbq_req_tail)
 818                 goto out;
 819         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 820         if (!(tmp & 0x80))
 821                 goto out;
 822         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 823         wl3501_free_tx_buffer(this, addr);
 824         this->esbq_req_tail += 4;
 825         if (this->esbq_req_tail >= this->esbq_req_end)
 826                 this->esbq_req_tail = this->esbq_req_start;
 827 out:
 828         return;
 829 }
 830
 831 static int wl3501_esbq_confirm(struct wl3501_card *this)
 832 {
 833         u8 tmp;
 834
 835         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 836         return tmp & 0x80;
 837 }
 838
 839 static void wl3501_online(struct net_device *dev)
 840 {
 841         struct wl3501_card *this = netdev_priv(dev);
 842
 843         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 844                dev->name, this->bssid);
 845         netif_wake_queue(dev);
 846 }
 847
 848 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 849 {
 850         u8 tmp = 0;
 851
 852         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 853         this->esbq_confirm += 4;
 854         if (this->esbq_confirm >= this->esbq_confirm_end)
 855                 this->esbq_confirm = this->esbq_confirm_start;
 856 }
 857
 858 static int wl3501_mgmt_auth(struct wl3501_card *this)
 859 {
 860         struct wl3501_auth_req sig = {
 861                 .sig_id  = WL3501_SIG_AUTH_REQ,
 862                 .type    = WL3501_SYS_TYPE_OPEN,
 863                 .timeout = 1000,
 864         };
 865
 866         pr_debug("entry");
 867         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 868         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 869 }
 870
 871 static int wl3501_mgmt_association(struct wl3501_card *this)
 872 {
 873         struct wl3501_assoc_req sig = {
 874                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 875                 .timeout         = 1000,
 876                 .listen_interval = 5,
 877                 .cap_info        = this->cap_info,
 878         };
 879
 880         pr_debug("entry");
 881         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 882         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 883 }
 884
 885 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 886 {
 887         struct wl3501_card *this = netdev_priv(dev);
 888         struct wl3501_join_confirm sig;
 889
 890         pr_debug("entry");
 891         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 892         if (sig.status == WL3501_STATUS_SUCCESS) {
 893                 if (this->net_type == IW_MODE_INFRA) {
 894                         if (this->join_sta_bss < this->bss_cnt) {
 895                                 const int i = this->join_sta_bss;
 896                                 memcpy(this->bssid,
 897                                        this->bss_set[i].bssid, ETH_ALEN);
 898                                 this->chan = this->bss_set[i].ds_pset.chan;
 899                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 900                                                      &this->bss_set[i].ssid.el);
 901                                 wl3501_mgmt_auth(this);
 902                         }
 903                 } else {
 904                         const int i = this->join_sta_bss;
 905
 906                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 907                         this->chan = this->bss_set[i].ds_pset.chan;
 908                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 909                                                   &this->bss_set[i].ssid.el);
 910                         wl3501_online(dev);
 911                 }
 912         } else {
 913                 int i;
 914                 this->join_sta_bss++;
 915                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 916                         if (!wl3501_mgmt_join(this, i))
 917                                 break;
 918                 this->join_sta_bss = i;
 919                 if (this->join_sta_bss == this->bss_cnt) {
 920                         if (this->net_type == IW_MODE_INFRA)
 921                                 wl3501_mgmt_scan(this, 100);
 922                         else {
 923                                 this->adhoc_times++;
 924                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 925                                         wl3501_mgmt_start(this);
 926                                 else
 927                                         wl3501_mgmt_scan(this, 100);
 928                         }
 929                 }
 930         }
 931 }
 932
 933 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 934                                           struct wl3501_card *this)
 935 {
 936         if (this->net_type == IW_MODE_INFRA) {
 937                 printk(KERN_INFO "Wireless LAN offline\n");
 938                 netif_stop_queue(dev);
 939                 wl3501_mgmt_resync(this);
 940         }
 941 }
 942
 943 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 944                                                struct wl3501_card *this,
 945                                                u16 addr)
 946 {
 947         struct wl3501_md_confirm sig;
 948
 949         pr_debug("entry");
 950         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 951         wl3501_free_tx_buffer(this, sig.data);
 952         if (netif_queue_stopped(dev))
 953                 netif_wake_queue(dev);
 954 }
 955
 956 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 957                                            struct wl3501_card *this, u16 addr)
 958 {
 959         struct wl3501_md_ind sig;
 960         struct sk_buff *skb;
 961         u8 rssi, addr4[ETH_ALEN];
 962         u16 pkt_len;
 963
 964         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 965         this->start_seg = sig.data;
 966         wl3501_get_from_wla(this,
 967                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 968                             &rssi, sizeof(rssi));
 969         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 970
 971         wl3501_get_from_wla(this,
 972                             sig.data +
 973                                 offsetof(struct wl3501_rx_hdr, addr4),
 974                             &addr4, sizeof(addr4));
 975         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 976               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 977                 printk(KERN_INFO "Insupported packet type!\n");
 978                 return;
 979         }
 980         pkt_len = sig.size + 12 - 24 - 4 - 6;
 981
 982         skb = dev_alloc_skb(pkt_len + 5);
 983
 984         if (!skb) {
 985                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
 986                        dev->name, pkt_len);
 987                 dev->stats.rx_dropped++;
 988         } else {
 989                 skb->dev = dev;
 990                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
 991                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
 992                 wl3501_receive(this, skb->data, pkt_len);
 993                 skb_put(skb, pkt_len);
 994                 skb->protocol   = eth_type_trans(skb, dev);
 995                 dev->stats.rx_packets++;
 996                 dev->stats.rx_bytes += skb->len;
 997                 netif_rx(skb);
 998         }
 999 }
1000
1001 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1002                                                 u16 addr, void *sig, int size)
1003 {
1004         pr_debug("entry");
1005         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1006                             sizeof(this->sig_get_confirm));
1007         wake_up(&this->wait);
1008 }
1009
1010 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1011                                                   struct wl3501_card *this,
1012                                                   u16 addr)
1013 {
1014         struct wl3501_start_confirm sig;
1015
1016         pr_debug("entry");
1017         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1018         if (sig.status == WL3501_STATUS_SUCCESS)
1019                 netif_wake_queue(dev);
1020 }
1021
1022 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1023                                                   u16 addr)
1024 {
1025         struct wl3501_card *this = netdev_priv(dev);
1026         struct wl3501_assoc_confirm sig;
1027
1028         pr_debug("entry");
1029         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1030
1031         if (sig.status == WL3501_STATUS_SUCCESS)
1032                 wl3501_online(dev);
1033 }
1034
1035 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1036                                                  u16 addr)
1037 {
1038         struct wl3501_auth_confirm sig;
1039
1040         pr_debug("entry");
1041         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1042
1043         if (sig.status == WL3501_STATUS_SUCCESS)
1044                 wl3501_mgmt_association(this);
1045         else
1046                 wl3501_mgmt_resync(this);
1047 }
1048
1049 static inline void wl3501_rx_interrupt(struct net_device *dev)
1050 {
1051         int morepkts;
1052         u16 addr;
1053         u8 sig_id;
1054         struct wl3501_card *this = netdev_priv(dev);
1055
1056         pr_debug("entry");
1057 loop:
1058         morepkts = 0;
1059         if (!wl3501_esbq_confirm(this))
1060                 goto free;
1061         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1062         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1063
1064         switch (sig_id) {
1065         case WL3501_SIG_DEAUTH_IND:
1066         case WL3501_SIG_DISASSOC_IND:
1067         case WL3501_SIG_ALARM:
1068                 wl3501_alarm_interrupt(dev, this);
1069                 break;
1070         case WL3501_SIG_MD_CONFIRM:
1071                 wl3501_md_confirm_interrupt(dev, this, addr);
1072                 break;
1073         case WL3501_SIG_MD_IND:
1074                 wl3501_md_ind_interrupt(dev, this, addr);
1075                 break;
1076         case WL3501_SIG_GET_CONFIRM:
1077                 wl3501_get_confirm_interrupt(this, addr,
1078                                              &this->sig_get_confirm,
1079                                              sizeof(this->sig_get_confirm));
1080                 break;
1081         case WL3501_SIG_PWR_MGMT_CONFIRM:
1082                 wl3501_get_confirm_interrupt(this, addr,
1083                                              &this->sig_pwr_mgmt_confirm,
1084                                             sizeof(this->sig_pwr_mgmt_confirm));
1085                 break;
1086         case WL3501_SIG_START_CONFIRM:
1087                 wl3501_start_confirm_interrupt(dev, this, addr);
1088                 break;
1089         case WL3501_SIG_SCAN_CONFIRM:
1090                 wl3501_mgmt_scan_confirm(this, addr);
1091                 break;
1092         case WL3501_SIG_JOIN_CONFIRM:
1093                 wl3501_mgmt_join_confirm(dev, addr);
1094                 break;
1095         case WL3501_SIG_ASSOC_CONFIRM:
1096                 wl3501_assoc_confirm_interrupt(dev, addr);
1097                 break;
1098         case WL3501_SIG_AUTH_CONFIRM:
1099                 wl3501_auth_confirm_interrupt(this, addr);
1100                 break;
1101         case WL3501_SIG_RESYNC_CONFIRM:
1102                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1103                 break;
1104         }
1105         wl3501_esbq_confirm_done(this);
1106         morepkts = 1;
1107         /* free request if necessary */
1108 free:
1109         wl3501_esbq_req_free(this);
1110         if (morepkts)
1111                 goto loop;
1112 }
1113
1114 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1115 {
1116         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1117 }
1118
1119 /**
1120  * wl3501_interrupt - Hardware interrupt from card.
1121  * @irq - Interrupt number
1122  * @dev_id - net_device
1123  *
1124  * We must acknowledge the interrupt as soon as possible, and block the
1125  * interrupt from the same card immediately to prevent re-entry.
1126  *
1127  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1128  * On the other hand, to prevent SUTRO from malfunctioning, we must
1129  * unlock the SUTRO as soon as possible.
1130  */
1131 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1132 {
1133         struct net_device *dev = dev_id;
1134         struct wl3501_card *this;
1135
1136         this = netdev_priv(dev);
1137         spin_lock(&this->lock);
1138         wl3501_ack_interrupt(this);
1139         wl3501_block_interrupt(this);
1140         wl3501_rx_interrupt(dev);
1141         wl3501_unblock_interrupt(this);
1142         spin_unlock(&this->lock);
1143
1144         return IRQ_HANDLED;
1145 }
1146
1147 static int wl3501_reset_board(struct wl3501_card *this)
1148 {
1149         u8 tmp = 0;
1150         int i, rc = 0;
1151
1152         /* Coreset */
1153         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1154         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1155         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1156
1157         /* Reset SRAM 0x480 to zero */
1158         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1159
1160         /* Start up */
1161         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1162
1163         WL3501_NOPLOOP(1024 * 50);
1164
1165         wl3501_unblock_interrupt(this); /* acme: was commented */
1166
1167         /* Polling Self_Test_Status */
1168         for (i = 0; i < 10000; i++) {
1169                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1170
1171                 if (tmp == 'W') {
1172                         /* firmware complete all test successfully */
1173                         tmp = 'A';
1174                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1175                         goto out;
1176                 }
1177                 WL3501_NOPLOOP(10);
1178         }
1179         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1180         rc = -ENODEV;
1181 out:
1182         return rc;
1183 }
1184
1185 static int wl3501_init_firmware(struct wl3501_card *this)
1186 {
1187         u16 ptr, next;
1188         int rc = wl3501_reset_board(this);
1189
1190         if (rc)
1191                 goto fail;
1192         this->card_name[0] = '\0';
1193         wl3501_get_from_wla(this, 0x1a00,
1194                             this->card_name, sizeof(this->card_name));
1195         this->card_name[sizeof(this->card_name) - 1] = '\0';
1196         this->firmware_date[0] = '\0';
1197         wl3501_get_from_wla(this, 0x1a40,
1198                             this->firmware_date, sizeof(this->firmware_date));
1199         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1200         /* Switch to SRAM Page 0 */
1201         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1202         /* Read parameter from card */
1203         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1204         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1205         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1206         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1207         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1208         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1209         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1210         this->esbq_req_end     += this->esbq_req_start;
1211         this->esbq_confirm      = this->esbq_confirm_start;
1212         this->esbq_confirm_end += this->esbq_confirm_start;
1213         /* Initial Tx Buffer */
1214         this->tx_buffer_cnt = 1;
1215         ptr = this->tx_buffer_head;
1216         next = ptr + WL3501_BLKSZ;
1217         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1218                 this->tx_buffer_cnt++;
1219                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1220                 ptr = next;
1221                 next = ptr + WL3501_BLKSZ;
1222         }
1223         rc = 0;
1224         next = 0;
1225         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1226         this->tx_buffer_tail = ptr;
1227 out:
1228         return rc;
1229 fail:
1230         printk(KERN_WARNING "%s: failed!\n", __func__);
1231         goto out;
1232 }
1233
1234 static int wl3501_close(struct net_device *dev)
1235 {
1236         struct wl3501_card *this = netdev_priv(dev);
1237         int rc = -ENODEV;
1238         unsigned long flags;
1239         struct pcmcia_device *link;
1240         link = this->p_dev;
1241
1242         spin_lock_irqsave(&this->lock, flags);
1243         link->open--;
1244
1245         /* Stop wl3501_hard_start_xmit() from now on */
1246         netif_stop_queue(dev);
1247         wl3501_ack_interrupt(this);
1248
1249         /* Mask interrupts from the SUTRO */
1250         wl3501_block_interrupt(this);
1251
1252         rc = 0;
1253         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1254         spin_unlock_irqrestore(&this->lock, flags);
1255         return rc;
1256 }
1257
1258 /**
1259  * wl3501_reset - Reset the SUTRO.
1260  * @dev - network device
1261  *
1262  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1263  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1264  * is running. It seems to be dangerous.
1265  */
1266 static int wl3501_reset(struct net_device *dev)
1267 {
1268         struct wl3501_card *this = netdev_priv(dev);
1269         int rc = -ENODEV;
1270
1271         wl3501_block_interrupt(this);
1272
1273         if (wl3501_init_firmware(this)) {
1274                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1275                        dev->name);
1276                 /* Free IRQ, and mark IRQ as unused */
1277                 free_irq(dev->irq, dev);
1278                 goto out;
1279         }
1280
1281         /*
1282          * Queue has to be started only when the Card is Started
1283          */
1284         netif_stop_queue(dev);
1285         this->adhoc_times = 0;
1286         wl3501_ack_interrupt(this);
1287         wl3501_unblock_interrupt(this);
1288         wl3501_mgmt_scan(this, 100);
1289         pr_debug("%s: device reset", dev->name);
1290         rc = 0;
1291 out:
1292         return rc;
1293 }
1294
1295 static void wl3501_tx_timeout(struct net_device *dev)
1296 {
1297         struct wl3501_card *this = netdev_priv(dev);
1298         struct net_device_stats *stats = &dev->stats;
1299         unsigned long flags;
1300         int rc;
1301
1302         stats->tx_errors++;
1303         spin_lock_irqsave(&this->lock, flags);
1304         rc = wl3501_reset(dev);
1305         spin_unlock_irqrestore(&this->lock, flags);
1306         if (rc)
1307                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1308                        dev->name, rc);
1309         else {
1310                 dev->trans_start = jiffies; /* prevent tx timeout */
1311                 netif_wake_queue(dev);
1312         }
1313 }
1314
1315 /*
1316  * Return : 0 - OK
1317  *          1 - Could not transmit (dev_queue_xmit will queue it)
1318  *              and try to sent it later
1319  */
1320 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1321                                                 struct net_device *dev)
1322 {
1323         int enabled, rc;
1324         struct wl3501_card *this = netdev_priv(dev);
1325         unsigned long flags;
1326
1327         spin_lock_irqsave(&this->lock, flags);
1328         enabled = wl3501_block_interrupt(this);
1329         rc = wl3501_send_pkt(this, skb->data, skb->len);
1330         if (enabled)
1331                 wl3501_unblock_interrupt(this);
1332         if (rc) {
1333                 ++dev->stats.tx_dropped;
1334                 netif_stop_queue(dev);
1335         } else {
1336                 ++dev->stats.tx_packets;
1337                 dev->stats.tx_bytes += skb->len;
1338                 kfree_skb(skb);
1339
1340                 if (this->tx_buffer_cnt < 2)
1341                         netif_stop_queue(dev);
1342         }
1343         spin_unlock_irqrestore(&this->lock, flags);
1344         return NETDEV_TX_OK;
1345 }
1346
1347 static int wl3501_open(struct net_device *dev)
1348 {
1349         int rc = -ENODEV;
1350         struct wl3501_card *this = netdev_priv(dev);
1351         unsigned long flags;
1352         struct pcmcia_device *link;
1353         link = this->p_dev;
1354
1355         spin_lock_irqsave(&this->lock, flags);
1356         if (!pcmcia_dev_present(link))
1357                 goto out;
1358         netif_device_attach(dev);
1359         link->open++;
1360
1361         /* Initial WL3501 firmware */
1362         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1363         if (wl3501_init_firmware(this))
1364                 goto fail;
1365         /* Initial device variables */
1366         this->adhoc_times = 0;
1367         /* Acknowledge Interrupt, for cleaning last state */
1368         wl3501_ack_interrupt(this);
1369
1370         /* Enable interrupt from card after all */
1371         wl3501_unblock_interrupt(this);
1372         wl3501_mgmt_scan(this, 100);
1373         rc = 0;
1374         pr_debug("%s: WL3501 opened", dev->name);
1375         printk(KERN_INFO "%s: Card Name: %s\n"
1376                          "%s: Firmware Date: %s\n",
1377                          dev->name, this->card_name,
1378                          dev->name, this->firmware_date);
1379 out:
1380         spin_unlock_irqrestore(&this->lock, flags);
1381         return rc;
1382 fail:
1383         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1384         goto out;
1385 }
1386
1387 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1388 {
1389         struct wl3501_card *this = netdev_priv(dev);
1390         struct iw_statistics *wstats = &this->wstats;
1391         u32 value; /* size checked: it is u32 */
1392
1393         memset(wstats, 0, sizeof(*wstats));
1394         wstats->status = netif_running(dev);
1395         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1396                                   &value, sizeof(value)))
1397                 wstats->discard.code += value;
1398         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1399                                   &value, sizeof(value)))
1400                 wstats->discard.code += value;
1401         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1402                                   &value, sizeof(value)))
1403                 wstats->discard.code += value;
1404         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1405                                   &value, sizeof(value)))
1406                 wstats->discard.retries = value;
1407         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1408                                   &value, sizeof(value)))
1409                 wstats->discard.misc += value;
1410         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1411                                   &value, sizeof(value)))
1412                 wstats->discard.misc += value;
1413         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1414                                   &value, sizeof(value)))
1415                 wstats->discard.misc += value;
1416         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1417                                   &value, sizeof(value)))
1418                 wstats->discard.misc += value;
1419         return wstats;
1420 }
1421
1422 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1423 {
1424         strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1425 }
1426
1427 static const struct ethtool_ops ops = {
1428         .get_drvinfo = wl3501_get_drvinfo
1429 };
1430
1431 /**
1432  * wl3501_detach - deletes a driver "instance"
1433  * @link - FILL_IN
1434  *
1435  * This deletes a driver "instance". The device is de-registered with Card
1436  * Services. If it has been released, all local data structures are freed.
1437  * Otherwise, the structures will be freed when the device is released.
1438  */
1439 static void wl3501_detach(struct pcmcia_device *link)
1440 {
1441         struct net_device *dev = link->priv;
1442
1443         /* If the device is currently configured and active, we won't actually
1444          * delete it yet.  Instead, it is marked so that when the release()
1445          * function is called, that will trigger a proper detach(). */
1446
1447         while (link->open > 0)
1448                 wl3501_close(dev);
1449
1450         netif_device_detach(dev);
1451         wl3501_release(link);
1452
1453         unregister_netdev(dev);
1454
1455         if (link->priv)
1456                 free_netdev(link->priv);
1457 }
1458
1459 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1460                            union iwreq_data *wrqu, char *extra)
1461 {
1462         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1463         return 0;
1464 }
1465
1466 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1467                            union iwreq_data *wrqu, char *extra)
1468 {
1469         struct wl3501_card *this = netdev_priv(dev);
1470         int channel = wrqu->freq.m;
1471         int rc = -EINVAL;
1472
1473         if (iw_valid_channel(this->reg_domain, channel)) {
1474                 this->chan = channel;
1475                 rc = wl3501_reset(dev);
1476         }
1477         return rc;
1478 }
1479
1480 static int wl3501_get_freq(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->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1486         wrqu->freq.e = 1;
1487         return 0;
1488 }
1489
1490 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1491                            union iwreq_data *wrqu, char *extra)
1492 {
1493         int rc = -EINVAL;
1494
1495         if (wrqu->mode == IW_MODE_INFRA ||
1496             wrqu->mode == IW_MODE_ADHOC ||
1497             wrqu->mode == IW_MODE_AUTO) {
1498                 struct wl3501_card *this = netdev_priv(dev);
1499
1500                 this->net_type = wrqu->mode;
1501                 rc = wl3501_reset(dev);
1502         }
1503         return rc;
1504 }
1505
1506 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1507                            union iwreq_data *wrqu, char *extra)
1508 {
1509         struct wl3501_card *this = netdev_priv(dev);
1510
1511         wrqu->mode = this->net_type;
1512         return 0;
1513 }
1514
1515 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1516                            union iwreq_data *wrqu, char *extra)
1517 {
1518         struct wl3501_card *this = netdev_priv(dev);
1519
1520         wrqu->sens.value = this->rssi;
1521         wrqu->sens.disabled = !wrqu->sens.value;
1522         wrqu->sens.fixed = 1;
1523         return 0;
1524 }
1525
1526 static int wl3501_get_range(struct net_device *dev,
1527                             struct iw_request_info *info,
1528                             union iwreq_data *wrqu, char *extra)
1529 {
1530         struct iw_range *range = (struct iw_range *)extra;
1531
1532         /* Set the length (very important for backward compatibility) */
1533         wrqu->data.length = sizeof(*range);
1534
1535         /* Set all the info we don't care or don't know about to zero */
1536         memset(range, 0, sizeof(*range));
1537
1538         /* Set the Wireless Extension versions */
1539         range->we_version_compiled      = WIRELESS_EXT;
1540         range->we_version_source        = 1;
1541         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1542         /* FIXME: study the code to fill in more fields... */
1543         return 0;
1544 }
1545
1546 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1547                           union iwreq_data *wrqu, char *extra)
1548 {
1549         struct wl3501_card *this = netdev_priv(dev);
1550         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1551         int rc = -EINVAL;
1552
1553         /* FIXME: we support other ARPHRDs...*/
1554         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1555                 goto out;
1556         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1557                 /* FIXME: rescan? */
1558         } else
1559                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1560                 /* FIXME: rescan? deassoc & scan? */
1561         rc = 0;
1562 out:
1563         return rc;
1564 }
1565
1566 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1567                           union iwreq_data *wrqu, char *extra)
1568 {
1569         struct wl3501_card *this = netdev_priv(dev);
1570
1571         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1572         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1573         return 0;
1574 }
1575
1576 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1577                            union iwreq_data *wrqu, char *extra)
1578 {
1579         /*
1580          * FIXME: trigger scanning with a reset, yes, I'm lazy
1581          */
1582         return wl3501_reset(dev);
1583 }
1584
1585 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1586                            union iwreq_data *wrqu, char *extra)
1587 {
1588         struct wl3501_card *this = netdev_priv(dev);
1589         int i;
1590         char *current_ev = extra;
1591         struct iw_event iwe;
1592
1593         for (i = 0; i < this->bss_cnt; ++i) {
1594                 iwe.cmd                 = SIOCGIWAP;
1595                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1596                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1597                 current_ev = iwe_stream_add_event(info, current_ev,
1598                                                   extra + IW_SCAN_MAX_DATA,
1599                                                   &iwe, IW_EV_ADDR_LEN);
1600                 iwe.cmd           = SIOCGIWESSID;
1601                 iwe.u.data.flags  = 1;
1602                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1603                 current_ev = iwe_stream_add_point(info, current_ev,
1604                                                   extra + IW_SCAN_MAX_DATA,
1605                                                   &iwe,
1606                                                   this->bss_set[i].ssid.essid);
1607                 iwe.cmd    = SIOCGIWMODE;
1608                 iwe.u.mode = this->bss_set[i].bss_type;
1609                 current_ev = iwe_stream_add_event(info, current_ev,
1610                                                   extra + IW_SCAN_MAX_DATA,
1611                                                   &iwe, IW_EV_UINT_LEN);
1612                 iwe.cmd = SIOCGIWFREQ;
1613                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1614                 iwe.u.freq.e = 0;
1615                 current_ev = iwe_stream_add_event(info, current_ev,
1616                                                   extra + IW_SCAN_MAX_DATA,
1617                                                   &iwe, IW_EV_FREQ_LEN);
1618                 iwe.cmd = SIOCGIWENCODE;
1619                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1620                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1621                 else
1622                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1623                 iwe.u.data.length = 0;
1624                 current_ev = iwe_stream_add_point(info, current_ev,
1625                                                   extra + IW_SCAN_MAX_DATA,
1626                                                   &iwe, NULL);
1627         }
1628         /* Length of data */
1629         wrqu->data.length = (current_ev - extra);
1630         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1631         return 0;
1632 }
1633
1634 static int wl3501_set_essid(struct net_device *dev,
1635                             struct iw_request_info *info,
1636                             union iwreq_data *wrqu, char *extra)
1637 {
1638         struct wl3501_card *this = netdev_priv(dev);
1639
1640         if (wrqu->data.flags) {
1641                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1642                                          &this->essid.el,
1643                                          extra, wrqu->data.length);
1644         } else { /* We accept any ESSID */
1645                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1646                                          &this->essid.el, "ANY", 3);
1647         }
1648         return wl3501_reset(dev);
1649 }
1650
1651 static int wl3501_get_essid(struct net_device *dev,
1652                             struct iw_request_info *info,
1653                             union iwreq_data *wrqu, char *extra)
1654 {
1655         struct wl3501_card *this = netdev_priv(dev);
1656         unsigned long flags;
1657
1658         spin_lock_irqsave(&this->lock, flags);
1659         wrqu->essid.flags  = 1;
1660         wrqu->essid.length = this->essid.el.len;
1661         memcpy(extra, this->essid.essid, this->essid.el.len);
1662         spin_unlock_irqrestore(&this->lock, flags);
1663         return 0;
1664 }
1665
1666 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1667                            union iwreq_data *wrqu, char *extra)
1668 {
1669         struct wl3501_card *this = netdev_priv(dev);
1670
1671         if (wrqu->data.length > sizeof(this->nick))
1672                 return -E2BIG;
1673         strlcpy(this->nick, extra, wrqu->data.length);
1674         return 0;
1675 }
1676
1677 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1678                            union iwreq_data *wrqu, char *extra)
1679 {
1680         struct wl3501_card *this = netdev_priv(dev);
1681
1682         strlcpy(extra, this->nick, 32);
1683         wrqu->data.length = strlen(extra);
1684         return 0;
1685 }
1686
1687 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1688                            union iwreq_data *wrqu, char *extra)
1689 {
1690         /*
1691          * FIXME: have to see from where to get this info, perhaps this card
1692          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1693          * common with the Planet Access Points. -acme
1694          */
1695         wrqu->bitrate.value = 2000000;
1696         wrqu->bitrate.fixed = 1;
1697         return 0;
1698 }
1699
1700 static int wl3501_get_rts_threshold(struct net_device *dev,
1701                                     struct iw_request_info *info,
1702                                     union iwreq_data *wrqu, char *extra)
1703 {
1704         u16 threshold; /* size checked: it is u16 */
1705         struct wl3501_card *this = netdev_priv(dev);
1706         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1707                                       &threshold, sizeof(threshold));
1708         if (!rc) {
1709                 wrqu->rts.value = threshold;
1710                 wrqu->rts.disabled = threshold >= 2347;
1711                 wrqu->rts.fixed = 1;
1712         }
1713         return rc;
1714 }
1715
1716 static int wl3501_get_frag_threshold(struct net_device *dev,
1717                                      struct iw_request_info *info,
1718                                      union iwreq_data *wrqu, char *extra)
1719 {
1720         u16 threshold; /* size checked: it is u16 */
1721         struct wl3501_card *this = netdev_priv(dev);
1722         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1723                                       &threshold, sizeof(threshold));
1724         if (!rc) {
1725                 wrqu->frag.value = threshold;
1726                 wrqu->frag.disabled = threshold >= 2346;
1727                 wrqu->frag.fixed = 1;
1728         }
1729         return rc;
1730 }
1731
1732 static int wl3501_get_txpow(struct net_device *dev,
1733                             struct iw_request_info *info,
1734                             union iwreq_data *wrqu, char *extra)
1735 {
1736         u16 txpow;
1737         struct wl3501_card *this = netdev_priv(dev);
1738         int rc = wl3501_get_mib_value(this,
1739                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1740                                       &txpow, sizeof(txpow));
1741         if (!rc) {
1742                 wrqu->txpower.value = txpow;
1743                 wrqu->txpower.disabled = 0;
1744                 /*
1745                  * From the MIB values I think this can be configurable,
1746                  * as it lists several tx power levels -acme
1747                  */
1748                 wrqu->txpower.fixed = 0;
1749                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1750         }
1751         return rc;
1752 }
1753
1754 static int wl3501_get_retry(struct net_device *dev,
1755                             struct iw_request_info *info,
1756                             union iwreq_data *wrqu, char *extra)
1757 {
1758         u8 retry; /* size checked: it is u8 */
1759         struct wl3501_card *this = netdev_priv(dev);
1760         int rc = wl3501_get_mib_value(this,
1761                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1762                                       &retry, sizeof(retry));
1763         if (rc)
1764                 goto out;
1765         if (wrqu->retry.flags & IW_RETRY_LONG) {
1766                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1767                 goto set_value;
1768         }
1769         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1770                                   &retry, sizeof(retry));
1771         if (rc)
1772                 goto out;
1773         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1774 set_value:
1775         wrqu->retry.value = retry;
1776         wrqu->retry.disabled = 0;
1777 out:
1778         return rc;
1779 }
1780
1781 static int wl3501_get_encode(struct net_device *dev,
1782                              struct iw_request_info *info,
1783                              union iwreq_data *wrqu, char *extra)
1784 {
1785         u8 implemented, restricted, keys[100], len_keys, tocopy;
1786         struct wl3501_card *this = netdev_priv(dev);
1787         int rc = wl3501_get_mib_value(this,
1788                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1789                                       &implemented, sizeof(implemented));
1790         if (rc)
1791                 goto out;
1792         if (!implemented) {
1793                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1794                 goto out;
1795         }
1796         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1797                                   &restricted, sizeof(restricted));
1798         if (rc)
1799                 goto out;
1800         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1801                                             IW_ENCODE_OPEN;
1802         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1803                                   &len_keys, sizeof(len_keys));
1804         if (rc)
1805                 goto out;
1806         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1807                                   keys, len_keys);
1808         if (rc)
1809                 goto out;
1810         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1811         tocopy = min_t(u8, tocopy, 100);
1812         wrqu->encoding.length = tocopy;
1813         memcpy(extra, keys, tocopy);
1814 out:
1815         return rc;
1816 }
1817
1818 static int wl3501_get_power(struct net_device *dev,
1819                             struct iw_request_info *info,
1820                             union iwreq_data *wrqu, char *extra)
1821 {
1822         u8 pwr_state;
1823         struct wl3501_card *this = netdev_priv(dev);
1824         int rc = wl3501_get_mib_value(this,
1825                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1826                                       &pwr_state, sizeof(pwr_state));
1827         if (rc)
1828                 goto out;
1829         wrqu->power.disabled = !pwr_state;
1830         wrqu->power.flags = IW_POWER_ON;
1831 out:
1832         return rc;
1833 }
1834
1835 static const iw_handler wl3501_handler[] = {
1836         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1837         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1838         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1839         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1840         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1841         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1842         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1843         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1844         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1845         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1846         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1847         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1848         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1849         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1850         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1851         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1852         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1853         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1854         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1855         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1856         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1857         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1858         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1859         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1860         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1861         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1862 };
1863
1864 static const struct iw_handler_def wl3501_handler_def = {
1865         .num_standard   = ARRAY_SIZE(wl3501_handler),
1866         .standard       = (iw_handler *)wl3501_handler,
1867         .get_wireless_stats = wl3501_get_wireless_stats,
1868 };
1869
1870 static const struct net_device_ops wl3501_netdev_ops = {
1871         .ndo_open               = wl3501_open,
1872         .ndo_stop               = wl3501_close,
1873         .ndo_start_xmit         = wl3501_hard_start_xmit,
1874         .ndo_tx_timeout         = wl3501_tx_timeout,
1875         .ndo_change_mtu         = eth_change_mtu,
1876         .ndo_set_mac_address    = eth_mac_addr,
1877         .ndo_validate_addr      = eth_validate_addr,
1878 };
1879
1880 /**
1881  * wl3501_attach - creates an "instance" of the driver
1882  *
1883  * Creates an "instance" of the driver, allocating local data structures for
1884  * one device.  The device is registered with Card Services.
1885  *
1886  * The dev_link structure is initialized, but we don't actually configure the
1887  * card at this point -- we wait until we receive a card insertion event.
1888  */
1889 static int wl3501_probe(struct pcmcia_device *p_dev)
1890 {
1891         struct net_device *dev;
1892         struct wl3501_card *this;
1893
1894         /* The io structure describes IO port mapping */
1895         p_dev->io.NumPorts1     = 16;
1896         p_dev->io.Attributes1   = IO_DATA_PATH_WIDTH_8;
1897         p_dev->io.IOAddrLines   = 5;
1898
1899         /* General socket configuration */
1900         p_dev->conf.Attributes  = CONF_ENABLE_IRQ;
1901         p_dev->conf.IntType     = INT_MEMORY_AND_IO;
1902         p_dev->conf.ConfigIndex = 1;
1903
1904         dev = alloc_etherdev(sizeof(struct wl3501_card));
1905         if (!dev)
1906                 goto out_link;
1907
1908
1909         dev->netdev_ops         = &wl3501_netdev_ops;
1910         dev->watchdog_timeo     = 5 * HZ;
1911
1912         this = netdev_priv(dev);
1913         this->wireless_data.spy_data = &this->spy_data;
1914         this->p_dev = p_dev;
1915         dev->wireless_data      = &this->wireless_data;
1916         dev->wireless_handlers  = &wl3501_handler_def;
1917         SET_ETHTOOL_OPS(dev, &ops);
1918         netif_stop_queue(dev);
1919         p_dev->priv = dev;
1920
1921         return wl3501_config(p_dev);
1922 out_link:
1923         return -ENOMEM;
1924 }
1925
1926 /**
1927  * wl3501_config - configure the PCMCIA socket and make eth device available
1928  * @link - FILL_IN
1929  *
1930  * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1931  * received, to configure the PCMCIA socket, and to make the ethernet device
1932  * available to the system.
1933  */
1934 static int wl3501_config(struct pcmcia_device *link)
1935 {
1936         struct net_device *dev = link->priv;
1937         int i = 0, j, ret;
1938         struct wl3501_card *this;
1939
1940         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1941          * want, you can also read the card's config table to pick addresses --
1942          * see the serial driver for an example. */
1943
1944         for (j = 0x280; j < 0x400; j += 0x20) {
1945                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1946                  * 0x200-0x2ff, and so on, because this seems safer */
1947                 link->io.BasePort1 = j;
1948                 link->io.BasePort2 = link->io.BasePort1 + 0x10;
1949                 i = pcmcia_request_io(link, &link->io);
1950                 if (i == 0)
1951                         break;
1952         }
1953         if (i != 0)
1954                 goto failed;
1955
1956         /* Now allocate an interrupt line. Note that this does not actually
1957          * assign a handler to the interrupt. */
1958
1959         ret = pcmcia_request_irq(link, wl3501_interrupt);
1960         if (ret)
1961                 goto failed;
1962
1963         /* This actually configures the PCMCIA socket -- setting up the I/O
1964          * windows and the interrupt mapping.  */
1965
1966         ret = pcmcia_request_configuration(link, &link->conf);
1967         if (ret)
1968                 goto failed;
1969
1970         dev->irq = link->irq;
1971         dev->base_addr = link->io.BasePort1;
1972         SET_NETDEV_DEV(dev, &link->dev);
1973         if (register_netdev(dev)) {
1974                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1975                 goto failed;
1976         }
1977
1978         this = netdev_priv(dev);
1979
1980         this->base_addr = dev->base_addr;
1981
1982         if (!wl3501_get_flash_mac_addr(this)) {
1983                 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
1984                        dev->name);
1985                 unregister_netdev(dev);
1986                 goto failed;
1987         }
1988
1989         for (i = 0; i < 6; i++)
1990                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1991
1992         /* print probe information */
1993         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1994                "MAC addr in flash ROM:%pM\n",
1995                dev->name, this->base_addr, (int)dev->irq,
1996                dev->dev_addr);
1997         /*
1998          * Initialize card parameters - added by jss
1999          */
2000         this->net_type          = IW_MODE_INFRA;
2001         this->bss_cnt           = 0;
2002         this->join_sta_bss      = 0;
2003         this->adhoc_times       = 0;
2004         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2005                                  "ANY", 3);
2006         this->card_name[0]      = '\0';
2007         this->firmware_date[0]  = '\0';
2008         this->rssi              = 255;
2009         this->chan              = iw_default_channel(this->reg_domain);
2010         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2011         spin_lock_init(&this->lock);
2012         init_waitqueue_head(&this->wait);
2013         netif_start_queue(dev);
2014         return 0;
2015
2016 failed:
2017         wl3501_release(link);
2018         return -ENODEV;
2019 }
2020
2021 /**
2022  * wl3501_release - unregister the net, release PCMCIA configuration
2023  * @arg - link
2024  *
2025  * After a card is removed, wl3501_release() will unregister the net device,
2026  * and release the PCMCIA configuration.  If the device is still open, this
2027  * will be postponed until it is closed.
2028  */
2029 static void wl3501_release(struct pcmcia_device *link)
2030 {
2031         pcmcia_disable_device(link);
2032 }
2033
2034 static int wl3501_suspend(struct pcmcia_device *link)
2035 {
2036         struct net_device *dev = link->priv;
2037
2038         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
2039         if (link->open)
2040                 netif_device_detach(dev);
2041
2042         return 0;
2043 }
2044
2045 static int wl3501_resume(struct pcmcia_device *link)
2046 {
2047         struct net_device *dev = link->priv;
2048
2049         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2050         if (link->open) {
2051                 wl3501_reset(dev);
2052                 netif_device_attach(dev);
2053         }
2054
2055         return 0;
2056 }
2057
2058
2059 static struct pcmcia_device_id wl3501_ids[] = {
2060         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2061         PCMCIA_DEVICE_NULL
2062 };
2063 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2064
2065 static struct pcmcia_driver wl3501_driver = {
2066         .owner          = THIS_MODULE,
2067         .drv            = {
2068                 .name   = "wl3501_cs",
2069         },
2070         .probe          = wl3501_probe,
2071         .remove         = wl3501_detach,
2072         .id_table       = wl3501_ids,
2073         .suspend        = wl3501_suspend,
2074         .resume         = wl3501_resume,
2075 };
2076
2077 static int __init wl3501_init_module(void)
2078 {
2079         return pcmcia_register_driver(&wl3501_driver);
2080 }
2081
2082 static void __exit wl3501_exit_module(void)
2083 {
2084         pcmcia_unregister_driver(&wl3501_driver);
2085 }
2086
2087 module_init(wl3501_init_module);
2088 module_exit(wl3501_exit_module);
2089
2090 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2091               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2092               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2093 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2094 MODULE_LICENSE("GPL");