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.h>
  52 #include <pcmcia/cistpl.h>
  53 #include <pcmcia/cisreg.h>
  54 #include <pcmcia/ds.h>
  55
  56 #include <asm/io.h>
  57 #include <asm/uaccess.h>
  58 #include <asm/system.h>
  59
  60 #include "wl3501.h"
  61
  62 #ifndef __i386__
  63 #define slow_down_io()
  64 #endif
  65
  66 /* For rough constant delay */
  67 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  68
  69
  70
  71 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  72 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  73 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  74
  75 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  76 #define WL3501_MAX_ADHOC_TRIES 16
  77
  78 #define WL3501_RESUME   0
  79 #define WL3501_SUSPEND  1
  80
  81 /*
  82  * The event() function is this driver's Card Services event handler.  It will
  83  * be called by Card Services when an appropriate card status event is
  84  * received. The config() and release() entry points are used to configure or
  85  * release a socket, in response to card insertion and ejection events.  They
  86  * are invoked from the wl24 event handler.
  87  */
  88 static int wl3501_config(struct pcmcia_device *link);
  89 static void wl3501_release(struct pcmcia_device *link);
  90
  91 static const struct {
  92         int reg_domain;
  93         int min, max, deflt;
  94 } iw_channel_table[] = {
  95         {
  96                 .reg_domain = IW_REG_DOMAIN_FCC,
  97                 .min        = 1,
  98                 .max        = 11,
  99                 .deflt      = 1,
 100         },
 101         {
 102                 .reg_domain = IW_REG_DOMAIN_DOC,
 103                 .min        = 1,
 104                 .max        = 11,
 105                 .deflt      = 1,
 106         },
 107         {
 108                 .reg_domain = IW_REG_DOMAIN_ETSI,
 109                 .min        = 1,
 110                 .max        = 13,
 111                 .deflt      = 1,
 112         },
 113         {
 114                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 115                 .min        = 10,
 116                 .max        = 11,
 117                 .deflt      = 10,
 118         },
 119         {
 120                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 121                 .min        = 10,
 122                 .max        = 13,
 123                 .deflt      = 10,
 124         },
 125         {
 126                 .reg_domain = IW_REG_DOMAIN_MKK,
 127                 .min        = 14,
 128                 .max        = 14,
 129                 .deflt      = 14,
 130         },
 131         {
 132                 .reg_domain = IW_REG_DOMAIN_MKK1,
 133                 .min        = 1,
 134                 .max        = 14,
 135                 .deflt      = 1,
 136         },
 137         {
 138                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 139                 .min        = 3,
 140                 .max        = 9,
 141                 .deflt      = 9,
 142         },
 143 };
 144
 145 /**
 146  * iw_valid_channel - validate channel in regulatory domain
 147  * @reg_comain - regulatory domain
 148  * @channel - channel to validate
 149  *
 150  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 151  */
 152 static int iw_valid_channel(int reg_domain, int channel)
 153 {
 154         int i, rc = 0;
 155
 156         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 157                 if (reg_domain == iw_channel_table[i].reg_domain) {
 158                         rc = channel >= iw_channel_table[i].min &&
 159                              channel <= iw_channel_table[i].max;
 160                         break;
 161                 }
 162         return rc;
 163 }
 164
 165 /**
 166  * iw_default_channel - get default channel for a regulatory domain
 167  * @reg_comain - regulatory domain
 168  *
 169  * Returns the default channel for a regulatory domain
 170  */
 171 static int iw_default_channel(int reg_domain)
 172 {
 173         int i, rc = 1;
 174
 175         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 176                 if (reg_domain == iw_channel_table[i].reg_domain) {
 177                         rc = iw_channel_table[i].deflt;
 178                         break;
 179                 }
 180         return rc;
 181 }
 182
 183 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 184                                      struct iw_mgmt_info_element *el,
 185                                      void *value, int len)
 186 {
 187         el->id  = id;
 188         el->len = len;
 189         memcpy(el->data, value, len);
 190 }
 191
 192 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 193                                       struct iw_mgmt_info_element *from)
 194 {
 195         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 196 }
 197
 198 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 199 {
 200         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 201 }
 202
 203 /*
 204  * Get Ethernet MAC addresss.
 205  *
 206  * WARNING: We switch to FPAGE0 and switc back again.
 207  *          Making sure there is no other WL function beening called by ISR.
 208  */
 209 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 210 {
 211         int base_addr = this->base_addr;
 212
 213         /* get MAC addr */
 214         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 215         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 216         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 217
 218         /* wait for reading EEPROM */
 219         WL3501_NOPLOOP(100);
 220         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 221         WL3501_NOPLOOP(100);
 222         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 223         WL3501_NOPLOOP(100);
 224         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 225         WL3501_NOPLOOP(100);
 226         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 227         WL3501_NOPLOOP(100);
 228         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 229         WL3501_NOPLOOP(100);
 230         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 231         WL3501_NOPLOOP(100);
 232         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 233         WL3501_NOPLOOP(100);
 234         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 235         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 236         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 237         WL3501_NOPLOOP(100);
 238         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 239         WL3501_NOPLOOP(100);
 240         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 241         /* switch to SRAM Page 0 (for safety) */
 242         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 243
 244         /* The MAC addr should be 00:60:... */
 245         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 246 }
 247
 248 /**
 249  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 250  * @dest: Card addressing space
 251  * @src: PC addressing space
 252  * @size: Bytes to move
 253  *
 254  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 255  */
 256 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 257                               int size)
 258 {
 259         /* switch to SRAM Page 0 */
 260         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 261                                                    WL3501_BSS_SPAGE0);
 262         /* set LMAL and LMAH */
 263         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 264         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 265
 266         /* rep out to Port A */
 267         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 268 }
 269
 270 /**
 271  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 272  * @src: Card addressing space
 273  * @dest: PC addressing space
 274  * @size: Bytes to move
 275  *
 276  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 277  */
 278 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 279                                 int size)
 280 {
 281         /* switch to SRAM Page 0 */
 282         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 283                                                   WL3501_BSS_SPAGE0);
 284         /* set LMAL and LMAH */
 285         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 286         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 287
 288         /* rep get from Port A */
 289         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 290 }
 291
 292 /*
 293  * Get/Allocate a free Tx Data Buffer
 294  *
 295  *  *--------------*-----------------*----------------------------------*
 296  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 297  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 298  *  *--------------*-----------------*----------------------------------*
 299  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 300  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 301  *
 302  * Return = Postion in Card
 303  */
 304 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 305 {
 306         u16 next, blk_cnt = 0, zero = 0;
 307         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 308         u16 ret = 0;
 309
 310         if (full_len > this->tx_buffer_cnt * 254)
 311                 goto out;
 312         ret = this->tx_buffer_head;
 313         while (full_len) {
 314                 if (full_len < 254)
 315                         full_len = 0;
 316                 else
 317                         full_len -= 254;
 318                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 319                                     sizeof(next));
 320                 if (!full_len)
 321                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 322                                           sizeof(zero));
 323                 this->tx_buffer_head = next;
 324                 blk_cnt++;
 325                 /* if buffer is not enough */
 326                 if (!next && full_len) {
 327                         this->tx_buffer_head = ret;
 328                         ret = 0;
 329                         goto out;
 330                 }
 331         }
 332         this->tx_buffer_cnt -= blk_cnt;
 333 out:
 334         return ret;
 335 }
 336
 337 /*
 338  * Free an allocated Tx Buffer. ptr must be correct position.
 339  */
 340 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 341 {
 342         /* check if all space is not free */
 343         if (!this->tx_buffer_head)
 344                 this->tx_buffer_head = ptr;
 345         else
 346                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 347                                   &ptr, sizeof(ptr));
 348         while (ptr) {
 349                 u16 next;
 350
 351                 this->tx_buffer_cnt++;
 352                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 353                 this->tx_buffer_tail = ptr;
 354                 ptr = next;
 355         }
 356 }
 357
 358 static int wl3501_esbq_req_test(struct wl3501_card *this)
 359 {
 360         u8 tmp = 0;
 361
 362         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 363         return tmp & 0x80;
 364 }
 365
 366 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 367 {
 368         u16 tmp = 0;
 369
 370         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 371         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 372         this->esbq_req_head += 4;
 373         if (this->esbq_req_head >= this->esbq_req_end)
 374                 this->esbq_req_head = this->esbq_req_start;
 375 }
 376
 377 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 378 {
 379         int rc = -EIO;
 380
 381         if (wl3501_esbq_req_test(this)) {
 382                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 383                 if (ptr) {
 384                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 385                         wl3501_esbq_req(this, &ptr);
 386                         rc = 0;
 387                 }
 388         }
 389         return rc;
 390 }
 391
 392 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 393                                 void *bf, int size)
 394 {
 395         struct wl3501_get_req sig = {
 396                 .sig_id     = WL3501_SIG_GET_REQ,
 397                 .mib_attrib = index,
 398         };
 399         unsigned long flags;
 400         int rc = -EIO;
 401
 402         spin_lock_irqsave(&this->lock, flags);
 403         if (wl3501_esbq_req_test(this)) {
 404                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 405                 if (ptr) {
 406                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 407                         wl3501_esbq_req(this, &ptr);
 408                         this->sig_get_confirm.mib_status = 255;
 409                         spin_unlock_irqrestore(&this->lock, flags);
 410                         rc = wait_event_interruptible(this->wait,
 411                                 this->sig_get_confirm.mib_status != 255);
 412                         if (!rc)
 413                                 memcpy(bf, this->sig_get_confirm.mib_value,
 414                                        size);
 415                         goto out;
 416                 }
 417         }
 418         spin_unlock_irqrestore(&this->lock, flags);
 419 out:
 420         return rc;
 421 }
 422
 423 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 424 {
 425         struct wl3501_pwr_mgmt_req sig = {
 426                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 427                 .pwr_save       = suspend,
 428                 .wake_up        = !suspend,
 429                 .receive_dtims  = 10,
 430         };
 431         unsigned long flags;
 432         int rc = -EIO;
 433
 434         spin_lock_irqsave(&this->lock, flags);
 435         if (wl3501_esbq_req_test(this)) {
 436                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 437                 if (ptr) {
 438                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 439                         wl3501_esbq_req(this, &ptr);
 440                         this->sig_pwr_mgmt_confirm.status = 255;
 441                         spin_unlock_irqrestore(&this->lock, flags);
 442                         rc = wait_event_interruptible(this->wait,
 443                                 this->sig_pwr_mgmt_confirm.status != 255);
 444                         printk(KERN_INFO "%s: %s status=%d\n", __func__,
 445                                suspend ? "suspend" : "resume",
 446                                this->sig_pwr_mgmt_confirm.status);
 447                         goto out;
 448                 }
 449         }
 450         spin_unlock_irqrestore(&this->lock, flags);
 451 out:
 452         return rc;
 453 }
 454
 455 /**
 456  * wl3501_send_pkt - Send a packet.
 457  * @this - card
 458  *
 459  * Send a packet.
 460  *
 461  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 462  *                                   data[6] - data[11] is Src MAC Addr)
 463  * Ref: IEEE 802.11
 464  */
 465 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 466 {
 467         u16 bf, sig_bf, next, tmplen, pktlen;
 468         struct wl3501_md_req sig = {
 469                 .sig_id = WL3501_SIG_MD_REQ,
 470         };
 471         u8 *pdata = (char *)data;
 472         int rc = -EIO;
 473
 474         if (wl3501_esbq_req_test(this)) {
 475                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 476                 rc = -ENOMEM;
 477                 if (!sig_bf)    /* No free buffer available */
 478                         goto out;
 479                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 480                 if (!bf) {
 481                         /* No free buffer available */
 482                         wl3501_free_tx_buffer(this, sig_bf);
 483                         goto out;
 484                 }
 485                 rc = 0;
 486                 memcpy(&sig.daddr[0], pdata, 12);
 487                 pktlen = len - 12;
 488                 pdata += 12;
 489                 sig.data = bf;
 490                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 491                         u8 addr4[ETH_ALEN] = {
 492                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 493                         };
 494
 495                         wl3501_set_to_wla(this, bf + 2 +
 496                                           offsetof(struct wl3501_tx_hdr, addr4),
 497                                           addr4, sizeof(addr4));
 498                         sig.size = pktlen + 24 + 4 + 6;
 499                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 500                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 501                                 pktlen -= tmplen;
 502                         } else {
 503                                 tmplen = pktlen;
 504                                 pktlen = 0;
 505                         }
 506                         wl3501_set_to_wla(this,
 507                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 508                                           pdata, tmplen);
 509                         pdata += tmplen;
 510                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 511                         bf = next;
 512                 } else {
 513                         sig.size = pktlen + 24 + 4 - 2;
 514                         pdata += 2;
 515                         pktlen -= 2;
 516                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 517                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 518                                 pktlen -= tmplen;
 519                         } else {
 520                                 tmplen = pktlen;
 521                                 pktlen = 0;
 522                         }
 523                         wl3501_set_to_wla(this, bf + 2 +
 524                                           offsetof(struct wl3501_tx_hdr, addr4),
 525                                           pdata, tmplen);
 526                         pdata += tmplen;
 527                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 528                         bf = next;
 529                 }
 530                 while (pktlen > 0) {
 531                         if (pktlen > 254) {
 532                                 tmplen = 254;
 533                                 pktlen -= 254;
 534                         } else {
 535                                 tmplen = pktlen;
 536                                 pktlen = 0;
 537                         }
 538                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 539                         pdata += tmplen;
 540                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 541                         bf = next;
 542                 }
 543                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 544                 wl3501_esbq_req(this, &sig_bf);
 545         }
 546 out:
 547         return rc;
 548 }
 549
 550 static int wl3501_mgmt_resync(struct wl3501_card *this)
 551 {
 552         struct wl3501_resync_req sig = {
 553                 .sig_id = WL3501_SIG_RESYNC_REQ,
 554         };
 555
 556         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 557 }
 558
 559 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 560 {
 561         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 562                                                  WL3501_NET_TYPE_ADHOC;
 563 }
 564
 565 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 566 {
 567         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 568                                                  WL3501_MGMT_CAPABILITY_IBSS;
 569 }
 570
 571 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 572 {
 573         struct wl3501_scan_req sig = {
 574                 .sig_id         = WL3501_SIG_SCAN_REQ,
 575                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 576                 .probe_delay    = 0x10,
 577                 .min_chan_time  = chan_time,
 578                 .max_chan_time  = chan_time,
 579                 .bss_type       = wl3501_fw_bss_type(this),
 580         };
 581
 582         this->bss_cnt = this->join_sta_bss = 0;
 583         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 584 }
 585
 586 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 587 {
 588         struct wl3501_join_req sig = {
 589                 .sig_id           = WL3501_SIG_JOIN_REQ,
 590                 .timeout          = 10,
 591                 .ds_pset = {
 592                         .el = {
 593                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 594                                 .len = 1,
 595                         },
 596                         .chan   = this->chan,
 597                 },
 598         };
 599
 600         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 601         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 602 }
 603
 604 static int wl3501_mgmt_start(struct wl3501_card *this)
 605 {
 606         struct wl3501_start_req sig = {
 607                 .sig_id                 = WL3501_SIG_START_REQ,
 608                 .beacon_period          = 400,
 609                 .dtim_period            = 1,
 610                 .ds_pset = {
 611                         .el = {
 612                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 613                                 .len = 1,
 614                         },
 615                         .chan   = this->chan,
 616                 },
 617                 .bss_basic_rset = {
 618                         .el = {
 619                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 620                                 .len = 2,
 621                         },
 622                         .data_rate_labels = {
 623                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 624                                       IW_MGMT_RATE_LABEL_1MBIT,
 625                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 626                                       IW_MGMT_RATE_LABEL_2MBIT,
 627                         },
 628                 },
 629                 .operational_rset       = {
 630                         .el = {
 631                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 632                                 .len = 2,
 633                         },
 634                         .data_rate_labels = {
 635                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 636                                       IW_MGMT_RATE_LABEL_1MBIT,
 637                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 638                                       IW_MGMT_RATE_LABEL_2MBIT,
 639                         },
 640                 },
 641                 .ibss_pset              = {
 642                         .el = {
 643                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 644                                 .len     = 2,
 645                         },
 646                         .atim_window = 10,
 647                 },
 648                 .bss_type               = wl3501_fw_bss_type(this),
 649                 .cap_info               = wl3501_fw_cap_info(this),
 650         };
 651
 652         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 653         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 654         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 655 }
 656
 657 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 658 {
 659         u16 i = 0;
 660         int matchflag = 0;
 661         struct wl3501_scan_confirm sig;
 662
 663         pr_debug("entry");
 664         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 665         if (sig.status == WL3501_STATUS_SUCCESS) {
 666                 pr_debug("success");
 667                 if ((this->net_type == IW_MODE_INFRA &&
 668                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 669                     (this->net_type == IW_MODE_ADHOC &&
 670                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 671                     this->net_type == IW_MODE_AUTO) {
 672                         if (!this->essid.el.len)
 673                                 matchflag = 1;
 674                         else if (this->essid.el.len == 3 &&
 675                                  !memcmp(this->essid.essid, "ANY", 3))
 676                                 matchflag = 1;
 677                         else if (this->essid.el.len != sig.ssid.el.len)
 678                                 matchflag = 0;
 679                         else if (memcmp(this->essid.essid, sig.ssid.essid,
 680                                         this->essid.el.len))
 681                                 matchflag = 0;
 682                         else
 683                                 matchflag = 1;
 684                         if (matchflag) {
 685                                 for (i = 0; i < this->bss_cnt; i++) {
 686                                         if (!memcmp(this->bss_set[i].bssid,
 687                                                     sig.bssid, ETH_ALEN)) {
 688                                                 matchflag = 0;
 689                                                 break;
 690                                         }
 691                                 }
 692                         }
 693                         if (matchflag && (i < 20)) {
 694                                 memcpy(&this->bss_set[i].beacon_period,
 695                                        &sig.beacon_period, 73);
 696                                 this->bss_cnt++;
 697                                 this->rssi = sig.rssi;
 698                         }
 699                 }
 700         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 701                 pr_debug("timeout");
 702                 this->join_sta_bss = 0;
 703                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 704                         if (!wl3501_mgmt_join(this, i))
 705                                 break;
 706                 this->join_sta_bss = i;
 707                 if (this->join_sta_bss == this->bss_cnt) {
 708                         if (this->net_type == IW_MODE_INFRA)
 709                                 wl3501_mgmt_scan(this, 100);
 710                         else {
 711                                 this->adhoc_times++;
 712                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 713                                         wl3501_mgmt_start(this);
 714                                 else
 715                                         wl3501_mgmt_scan(this, 100);
 716                         }
 717                 }
 718         }
 719 }
 720
 721 /**
 722  * wl3501_block_interrupt - Mask interrupt from SUTRO
 723  * @this - card
 724  *
 725  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 726  * Return: 1 if interrupt is originally enabled
 727  */
 728 static int wl3501_block_interrupt(struct wl3501_card *this)
 729 {
 730         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 731         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 732                         WL3501_GCR_ENECINT));
 733
 734         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 735         return old & WL3501_GCR_ENECINT;
 736 }
 737
 738 /**
 739  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 740  * @this - card
 741  *
 742  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 743  * Return: 1 if interrupt is originally enabled
 744  */
 745 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 746 {
 747         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 748         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 749                   WL3501_GCR_ENECINT;
 750
 751         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 752         return old & WL3501_GCR_ENECINT;
 753 }
 754
 755 /**
 756  * wl3501_receive - Receive data from Receive Queue.
 757  *
 758  * Receive data from Receive Queue.
 759  *
 760  * @this: card
 761  * @bf: address of host
 762  * @size: size of buffer.
 763  */
 764 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 765 {
 766         u16 next_addr, next_addr1;
 767         u8 *data = bf + 12;
 768
 769         size -= 12;
 770         wl3501_get_from_wla(this, this->start_seg + 2,
 771                             &next_addr, sizeof(next_addr));
 772         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 773                 wl3501_get_from_wla(this,
 774                                     this->start_seg +
 775                                         sizeof(struct wl3501_rx_hdr), data,
 776                                     WL3501_BLKSZ -
 777                                         sizeof(struct wl3501_rx_hdr));
 778                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 779                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 780         } else {
 781                 wl3501_get_from_wla(this,
 782                                     this->start_seg +
 783                                         sizeof(struct wl3501_rx_hdr),
 784                                     data, size);
 785                 size = 0;
 786         }
 787         while (size > 0) {
 788                 if (size > WL3501_BLKSZ - 5) {
 789                         wl3501_get_from_wla(this, next_addr + 5, data,
 790                                             WL3501_BLKSZ - 5);
 791                         size -= WL3501_BLKSZ - 5;
 792                         data += WL3501_BLKSZ - 5;
 793                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 794                                             sizeof(next_addr1));
 795                         next_addr = next_addr1;
 796                 } else {
 797                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 798                         size = 0;
 799                 }
 800         }
 801         return 0;
 802 }
 803
 804 static void wl3501_esbq_req_free(struct wl3501_card *this)
 805 {
 806         u8 tmp;
 807         u16 addr;
 808
 809         if (this->esbq_req_head == this->esbq_req_tail)
 810                 goto out;
 811         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 812         if (!(tmp & 0x80))
 813                 goto out;
 814         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 815         wl3501_free_tx_buffer(this, addr);
 816         this->esbq_req_tail += 4;
 817         if (this->esbq_req_tail >= this->esbq_req_end)
 818                 this->esbq_req_tail = this->esbq_req_start;
 819 out:
 820         return;
 821 }
 822
 823 static int wl3501_esbq_confirm(struct wl3501_card *this)
 824 {
 825         u8 tmp;
 826
 827         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 828         return tmp & 0x80;
 829 }
 830
 831 static void wl3501_online(struct net_device *dev)
 832 {
 833         struct wl3501_card *this = netdev_priv(dev);
 834
 835         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 836                dev->name, this->bssid);
 837         netif_wake_queue(dev);
 838 }
 839
 840 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 841 {
 842         u8 tmp = 0;
 843
 844         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 845         this->esbq_confirm += 4;
 846         if (this->esbq_confirm >= this->esbq_confirm_end)
 847                 this->esbq_confirm = this->esbq_confirm_start;
 848 }
 849
 850 static int wl3501_mgmt_auth(struct wl3501_card *this)
 851 {
 852         struct wl3501_auth_req sig = {
 853                 .sig_id  = WL3501_SIG_AUTH_REQ,
 854                 .type    = WL3501_SYS_TYPE_OPEN,
 855                 .timeout = 1000,
 856         };
 857
 858         pr_debug("entry");
 859         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 860         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 861 }
 862
 863 static int wl3501_mgmt_association(struct wl3501_card *this)
 864 {
 865         struct wl3501_assoc_req sig = {
 866                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 867                 .timeout         = 1000,
 868                 .listen_interval = 5,
 869                 .cap_info        = this->cap_info,
 870         };
 871
 872         pr_debug("entry");
 873         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 874         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 875 }
 876
 877 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 878 {
 879         struct wl3501_card *this = netdev_priv(dev);
 880         struct wl3501_join_confirm sig;
 881
 882         pr_debug("entry");
 883         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 884         if (sig.status == WL3501_STATUS_SUCCESS) {
 885                 if (this->net_type == IW_MODE_INFRA) {
 886                         if (this->join_sta_bss < this->bss_cnt) {
 887                                 const int i = this->join_sta_bss;
 888                                 memcpy(this->bssid,
 889                                        this->bss_set[i].bssid, ETH_ALEN);
 890                                 this->chan = this->bss_set[i].ds_pset.chan;
 891                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 892                                                      &this->bss_set[i].ssid.el);
 893                                 wl3501_mgmt_auth(this);
 894                         }
 895                 } else {
 896                         const int i = this->join_sta_bss;
 897
 898                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 899                         this->chan = this->bss_set[i].ds_pset.chan;
 900                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 901                                                   &this->bss_set[i].ssid.el);
 902                         wl3501_online(dev);
 903                 }
 904         } else {
 905                 int i;
 906                 this->join_sta_bss++;
 907                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 908                         if (!wl3501_mgmt_join(this, i))
 909                                 break;
 910                 this->join_sta_bss = i;
 911                 if (this->join_sta_bss == this->bss_cnt) {
 912                         if (this->net_type == IW_MODE_INFRA)
 913                                 wl3501_mgmt_scan(this, 100);
 914                         else {
 915                                 this->adhoc_times++;
 916                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 917                                         wl3501_mgmt_start(this);
 918                                 else
 919                                         wl3501_mgmt_scan(this, 100);
 920                         }
 921                 }
 922         }
 923 }
 924
 925 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 926                                           struct wl3501_card *this)
 927 {
 928         if (this->net_type == IW_MODE_INFRA) {
 929                 printk(KERN_INFO "Wireless LAN offline\n");
 930                 netif_stop_queue(dev);
 931                 wl3501_mgmt_resync(this);
 932         }
 933 }
 934
 935 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 936                                                struct wl3501_card *this,
 937                                                u16 addr)
 938 {
 939         struct wl3501_md_confirm sig;
 940
 941         pr_debug("entry");
 942         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 943         wl3501_free_tx_buffer(this, sig.data);
 944         if (netif_queue_stopped(dev))
 945                 netif_wake_queue(dev);
 946 }
 947
 948 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 949                                            struct wl3501_card *this, u16 addr)
 950 {
 951         struct wl3501_md_ind sig;
 952         struct sk_buff *skb;
 953         u8 rssi, addr4[ETH_ALEN];
 954         u16 pkt_len;
 955
 956         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 957         this->start_seg = sig.data;
 958         wl3501_get_from_wla(this,
 959                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 960                             &rssi, sizeof(rssi));
 961         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 962
 963         wl3501_get_from_wla(this,
 964                             sig.data +
 965                                 offsetof(struct wl3501_rx_hdr, addr4),
 966                             &addr4, sizeof(addr4));
 967         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 968               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 969                 printk(KERN_INFO "Insupported packet type!\n");
 970                 return;
 971         }
 972         pkt_len = sig.size + 12 - 24 - 4 - 6;
 973
 974         skb = dev_alloc_skb(pkt_len + 5);
 975
 976         if (!skb) {
 977                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
 978                        dev->name, pkt_len);
 979                 dev->stats.rx_dropped++;
 980         } else {
 981                 skb->dev = dev;
 982                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
 983                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
 984                 wl3501_receive(this, skb->data, pkt_len);
 985                 skb_put(skb, pkt_len);
 986                 skb->protocol   = eth_type_trans(skb, dev);
 987                 dev->stats.rx_packets++;
 988                 dev->stats.rx_bytes += skb->len;
 989                 netif_rx(skb);
 990         }
 991 }
 992
 993 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
 994                                                 u16 addr, void *sig, int size)
 995 {
 996         pr_debug("entry");
 997         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
 998                             sizeof(this->sig_get_confirm));
 999         wake_up(&this->wait);
1000 }
1001
1002 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1003                                                   struct wl3501_card *this,
1004                                                   u16 addr)
1005 {
1006         struct wl3501_start_confirm sig;
1007
1008         pr_debug("entry");
1009         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1010         if (sig.status == WL3501_STATUS_SUCCESS)
1011                 netif_wake_queue(dev);
1012 }
1013
1014 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1015                                                   u16 addr)
1016 {
1017         struct wl3501_card *this = netdev_priv(dev);
1018         struct wl3501_assoc_confirm sig;
1019
1020         pr_debug("entry");
1021         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1022
1023         if (sig.status == WL3501_STATUS_SUCCESS)
1024                 wl3501_online(dev);
1025 }
1026
1027 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1028                                                  u16 addr)
1029 {
1030         struct wl3501_auth_confirm sig;
1031
1032         pr_debug("entry");
1033         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1034
1035         if (sig.status == WL3501_STATUS_SUCCESS)
1036                 wl3501_mgmt_association(this);
1037         else
1038                 wl3501_mgmt_resync(this);
1039 }
1040
1041 static inline void wl3501_rx_interrupt(struct net_device *dev)
1042 {
1043         int morepkts;
1044         u16 addr;
1045         u8 sig_id;
1046         struct wl3501_card *this = netdev_priv(dev);
1047
1048         pr_debug("entry");
1049 loop:
1050         morepkts = 0;
1051         if (!wl3501_esbq_confirm(this))
1052                 goto free;
1053         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1054         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1055
1056         switch (sig_id) {
1057         case WL3501_SIG_DEAUTH_IND:
1058         case WL3501_SIG_DISASSOC_IND:
1059         case WL3501_SIG_ALARM:
1060                 wl3501_alarm_interrupt(dev, this);
1061                 break;
1062         case WL3501_SIG_MD_CONFIRM:
1063                 wl3501_md_confirm_interrupt(dev, this, addr);
1064                 break;
1065         case WL3501_SIG_MD_IND:
1066                 wl3501_md_ind_interrupt(dev, this, addr);
1067                 break;
1068         case WL3501_SIG_GET_CONFIRM:
1069                 wl3501_get_confirm_interrupt(this, addr,
1070                                              &this->sig_get_confirm,
1071                                              sizeof(this->sig_get_confirm));
1072                 break;
1073         case WL3501_SIG_PWR_MGMT_CONFIRM:
1074                 wl3501_get_confirm_interrupt(this, addr,
1075                                              &this->sig_pwr_mgmt_confirm,
1076                                             sizeof(this->sig_pwr_mgmt_confirm));
1077                 break;
1078         case WL3501_SIG_START_CONFIRM:
1079                 wl3501_start_confirm_interrupt(dev, this, addr);
1080                 break;
1081         case WL3501_SIG_SCAN_CONFIRM:
1082                 wl3501_mgmt_scan_confirm(this, addr);
1083                 break;
1084         case WL3501_SIG_JOIN_CONFIRM:
1085                 wl3501_mgmt_join_confirm(dev, addr);
1086                 break;
1087         case WL3501_SIG_ASSOC_CONFIRM:
1088                 wl3501_assoc_confirm_interrupt(dev, addr);
1089                 break;
1090         case WL3501_SIG_AUTH_CONFIRM:
1091                 wl3501_auth_confirm_interrupt(this, addr);
1092                 break;
1093         case WL3501_SIG_RESYNC_CONFIRM:
1094                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1095                 break;
1096         }
1097         wl3501_esbq_confirm_done(this);
1098         morepkts = 1;
1099         /* free request if necessary */
1100 free:
1101         wl3501_esbq_req_free(this);
1102         if (morepkts)
1103                 goto loop;
1104 }
1105
1106 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1107 {
1108         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1109 }
1110
1111 /**
1112  * wl3501_interrupt - Hardware interrupt from card.
1113  * @irq - Interrupt number
1114  * @dev_id - net_device
1115  *
1116  * We must acknowledge the interrupt as soon as possible, and block the
1117  * interrupt from the same card immediately to prevent re-entry.
1118  *
1119  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1120  * On the other hand, to prevent SUTRO from malfunctioning, we must
1121  * unlock the SUTRO as soon as possible.
1122  */
1123 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1124 {
1125         struct net_device *dev = dev_id;
1126         struct wl3501_card *this;
1127
1128         this = netdev_priv(dev);
1129         spin_lock(&this->lock);
1130         wl3501_ack_interrupt(this);
1131         wl3501_block_interrupt(this);
1132         wl3501_rx_interrupt(dev);
1133         wl3501_unblock_interrupt(this);
1134         spin_unlock(&this->lock);
1135
1136         return IRQ_HANDLED;
1137 }
1138
1139 static int wl3501_reset_board(struct wl3501_card *this)
1140 {
1141         u8 tmp = 0;
1142         int i, rc = 0;
1143
1144         /* Coreset */
1145         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1146         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1147         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1148
1149         /* Reset SRAM 0x480 to zero */
1150         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1151
1152         /* Start up */
1153         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1154
1155         WL3501_NOPLOOP(1024 * 50);
1156
1157         wl3501_unblock_interrupt(this); /* acme: was commented */
1158
1159         /* Polling Self_Test_Status */
1160         for (i = 0; i < 10000; i++) {
1161                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1162
1163                 if (tmp == 'W') {
1164                         /* firmware complete all test successfully */
1165                         tmp = 'A';
1166                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1167                         goto out;
1168                 }
1169                 WL3501_NOPLOOP(10);
1170         }
1171         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1172         rc = -ENODEV;
1173 out:
1174         return rc;
1175 }
1176
1177 static int wl3501_init_firmware(struct wl3501_card *this)
1178 {
1179         u16 ptr, next;
1180         int rc = wl3501_reset_board(this);
1181
1182         if (rc)
1183                 goto fail;
1184         this->card_name[0] = '\0';
1185         wl3501_get_from_wla(this, 0x1a00,
1186                             this->card_name, sizeof(this->card_name));
1187         this->card_name[sizeof(this->card_name) - 1] = '\0';
1188         this->firmware_date[0] = '\0';
1189         wl3501_get_from_wla(this, 0x1a40,
1190                             this->firmware_date, sizeof(this->firmware_date));
1191         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1192         /* Switch to SRAM Page 0 */
1193         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1194         /* Read parameter from card */
1195         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1196         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1197         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1198         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1199         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1200         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1201         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1202         this->esbq_req_end     += this->esbq_req_start;
1203         this->esbq_confirm      = this->esbq_confirm_start;
1204         this->esbq_confirm_end += this->esbq_confirm_start;
1205         /* Initial Tx Buffer */
1206         this->tx_buffer_cnt = 1;
1207         ptr = this->tx_buffer_head;
1208         next = ptr + WL3501_BLKSZ;
1209         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1210                 this->tx_buffer_cnt++;
1211                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1212                 ptr = next;
1213                 next = ptr + WL3501_BLKSZ;
1214         }
1215         rc = 0;
1216         next = 0;
1217         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1218         this->tx_buffer_tail = ptr;
1219 out:
1220         return rc;
1221 fail:
1222         printk(KERN_WARNING "%s: failed!\n", __func__);
1223         goto out;
1224 }
1225
1226 static int wl3501_close(struct net_device *dev)
1227 {
1228         struct wl3501_card *this = netdev_priv(dev);
1229         int rc = -ENODEV;
1230         unsigned long flags;
1231         struct pcmcia_device *link;
1232         link = this->p_dev;
1233
1234         spin_lock_irqsave(&this->lock, flags);
1235         link->open--;
1236
1237         /* Stop wl3501_hard_start_xmit() from now on */
1238         netif_stop_queue(dev);
1239         wl3501_ack_interrupt(this);
1240
1241         /* Mask interrupts from the SUTRO */
1242         wl3501_block_interrupt(this);
1243
1244         rc = 0;
1245         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1246         spin_unlock_irqrestore(&this->lock, flags);
1247         return rc;
1248 }
1249
1250 /**
1251  * wl3501_reset - Reset the SUTRO.
1252  * @dev - network device
1253  *
1254  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1255  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1256  * is running. It seems to be dangerous.
1257  */
1258 static int wl3501_reset(struct net_device *dev)
1259 {
1260         struct wl3501_card *this = netdev_priv(dev);
1261         int rc = -ENODEV;
1262
1263         wl3501_block_interrupt(this);
1264
1265         if (wl3501_init_firmware(this)) {
1266                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1267                        dev->name);
1268                 /* Free IRQ, and mark IRQ as unused */
1269                 free_irq(dev->irq, dev);
1270                 goto out;
1271         }
1272
1273         /*
1274          * Queue has to be started only when the Card is Started
1275          */
1276         netif_stop_queue(dev);
1277         this->adhoc_times = 0;
1278         wl3501_ack_interrupt(this);
1279         wl3501_unblock_interrupt(this);
1280         wl3501_mgmt_scan(this, 100);
1281         pr_debug("%s: device reset", dev->name);
1282         rc = 0;
1283 out:
1284         return rc;
1285 }
1286
1287 static void wl3501_tx_timeout(struct net_device *dev)
1288 {
1289         struct wl3501_card *this = netdev_priv(dev);
1290         struct net_device_stats *stats = &dev->stats;
1291         unsigned long flags;
1292         int rc;
1293
1294         stats->tx_errors++;
1295         spin_lock_irqsave(&this->lock, flags);
1296         rc = wl3501_reset(dev);
1297         spin_unlock_irqrestore(&this->lock, flags);
1298         if (rc)
1299                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1300                        dev->name, rc);
1301         else {
1302                 dev->trans_start = jiffies; /* prevent tx timeout */
1303                 netif_wake_queue(dev);
1304         }
1305 }
1306
1307 /*
1308  * Return : 0 - OK
1309  *          1 - Could not transmit (dev_queue_xmit will queue it)
1310  *              and try to sent it later
1311  */
1312 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1313                                                 struct net_device *dev)
1314 {
1315         int enabled, rc;
1316         struct wl3501_card *this = netdev_priv(dev);
1317         unsigned long flags;
1318
1319         spin_lock_irqsave(&this->lock, flags);
1320         enabled = wl3501_block_interrupt(this);
1321         rc = wl3501_send_pkt(this, skb->data, skb->len);
1322         if (enabled)
1323                 wl3501_unblock_interrupt(this);
1324         if (rc) {
1325                 ++dev->stats.tx_dropped;
1326                 netif_stop_queue(dev);
1327         } else {
1328                 ++dev->stats.tx_packets;
1329                 dev->stats.tx_bytes += skb->len;
1330                 kfree_skb(skb);
1331
1332                 if (this->tx_buffer_cnt < 2)
1333                         netif_stop_queue(dev);
1334         }
1335         spin_unlock_irqrestore(&this->lock, flags);
1336         return NETDEV_TX_OK;
1337 }
1338
1339 static int wl3501_open(struct net_device *dev)
1340 {
1341         int rc = -ENODEV;
1342         struct wl3501_card *this = netdev_priv(dev);
1343         unsigned long flags;
1344         struct pcmcia_device *link;
1345         link = this->p_dev;
1346
1347         spin_lock_irqsave(&this->lock, flags);
1348         if (!pcmcia_dev_present(link))
1349                 goto out;
1350         netif_device_attach(dev);
1351         link->open++;
1352
1353         /* Initial WL3501 firmware */
1354         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1355         if (wl3501_init_firmware(this))
1356                 goto fail;
1357         /* Initial device variables */
1358         this->adhoc_times = 0;
1359         /* Acknowledge Interrupt, for cleaning last state */
1360         wl3501_ack_interrupt(this);
1361
1362         /* Enable interrupt from card after all */
1363         wl3501_unblock_interrupt(this);
1364         wl3501_mgmt_scan(this, 100);
1365         rc = 0;
1366         pr_debug("%s: WL3501 opened", dev->name);
1367         printk(KERN_INFO "%s: Card Name: %s\n"
1368                          "%s: Firmware Date: %s\n",
1369                          dev->name, this->card_name,
1370                          dev->name, this->firmware_date);
1371 out:
1372         spin_unlock_irqrestore(&this->lock, flags);
1373         return rc;
1374 fail:
1375         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1376         goto out;
1377 }
1378
1379 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1380 {
1381         struct wl3501_card *this = netdev_priv(dev);
1382         struct iw_statistics *wstats = &this->wstats;
1383         u32 value; /* size checked: it is u32 */
1384
1385         memset(wstats, 0, sizeof(*wstats));
1386         wstats->status = netif_running(dev);
1387         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1388                                   &value, sizeof(value)))
1389                 wstats->discard.code += value;
1390         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1391                                   &value, sizeof(value)))
1392                 wstats->discard.code += value;
1393         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1394                                   &value, sizeof(value)))
1395                 wstats->discard.code += value;
1396         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1397                                   &value, sizeof(value)))
1398                 wstats->discard.retries = value;
1399         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1400                                   &value, sizeof(value)))
1401                 wstats->discard.misc += value;
1402         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1403                                   &value, sizeof(value)))
1404                 wstats->discard.misc += value;
1405         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1406                                   &value, sizeof(value)))
1407                 wstats->discard.misc += value;
1408         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1409                                   &value, sizeof(value)))
1410                 wstats->discard.misc += value;
1411         return wstats;
1412 }
1413
1414 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1415 {
1416         strlcpy(info->driver, "wl3501_cs", sizeof(info->driver));
1417 }
1418
1419 static const struct ethtool_ops ops = {
1420         .get_drvinfo = wl3501_get_drvinfo
1421 };
1422
1423 /**
1424  * wl3501_detach - deletes a driver "instance"
1425  * @link - FILL_IN
1426  *
1427  * This deletes a driver "instance". The device is de-registered with Card
1428  * Services. If it has been released, all local data structures are freed.
1429  * Otherwise, the structures will be freed when the device is released.
1430  */
1431 static void wl3501_detach(struct pcmcia_device *link)
1432 {
1433         struct net_device *dev = link->priv;
1434
1435         /* If the device is currently configured and active, we won't actually
1436          * delete it yet.  Instead, it is marked so that when the release()
1437          * function is called, that will trigger a proper detach(). */
1438
1439         while (link->open > 0)
1440                 wl3501_close(dev);
1441
1442         netif_device_detach(dev);
1443         wl3501_release(link);
1444
1445         unregister_netdev(dev);
1446
1447         if (link->priv)
1448                 free_netdev(link->priv);
1449 }
1450
1451 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1452                            union iwreq_data *wrqu, char *extra)
1453 {
1454         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1455         return 0;
1456 }
1457
1458 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1459                            union iwreq_data *wrqu, char *extra)
1460 {
1461         struct wl3501_card *this = netdev_priv(dev);
1462         int channel = wrqu->freq.m;
1463         int rc = -EINVAL;
1464
1465         if (iw_valid_channel(this->reg_domain, channel)) {
1466                 this->chan = channel;
1467                 rc = wl3501_reset(dev);
1468         }
1469         return rc;
1470 }
1471
1472 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1473                            union iwreq_data *wrqu, char *extra)
1474 {
1475         struct wl3501_card *this = netdev_priv(dev);
1476
1477         wrqu->freq.m = ieee80211_dsss_chan_to_freq(this->chan) * 100000;
1478         wrqu->freq.e = 1;
1479         return 0;
1480 }
1481
1482 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1483                            union iwreq_data *wrqu, char *extra)
1484 {
1485         int rc = -EINVAL;
1486
1487         if (wrqu->mode == IW_MODE_INFRA ||
1488             wrqu->mode == IW_MODE_ADHOC ||
1489             wrqu->mode == IW_MODE_AUTO) {
1490                 struct wl3501_card *this = netdev_priv(dev);
1491
1492                 this->net_type = wrqu->mode;
1493                 rc = wl3501_reset(dev);
1494         }
1495         return rc;
1496 }
1497
1498 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1499                            union iwreq_data *wrqu, char *extra)
1500 {
1501         struct wl3501_card *this = netdev_priv(dev);
1502
1503         wrqu->mode = this->net_type;
1504         return 0;
1505 }
1506
1507 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1508                            union iwreq_data *wrqu, char *extra)
1509 {
1510         struct wl3501_card *this = netdev_priv(dev);
1511
1512         wrqu->sens.value = this->rssi;
1513         wrqu->sens.disabled = !wrqu->sens.value;
1514         wrqu->sens.fixed = 1;
1515         return 0;
1516 }
1517
1518 static int wl3501_get_range(struct net_device *dev,
1519                             struct iw_request_info *info,
1520                             union iwreq_data *wrqu, char *extra)
1521 {
1522         struct iw_range *range = (struct iw_range *)extra;
1523
1524         /* Set the length (very important for backward compatibility) */
1525         wrqu->data.length = sizeof(*range);
1526
1527         /* Set all the info we don't care or don't know about to zero */
1528         memset(range, 0, sizeof(*range));
1529
1530         /* Set the Wireless Extension versions */
1531         range->we_version_compiled      = WIRELESS_EXT;
1532         range->we_version_source        = 1;
1533         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1534         /* FIXME: study the code to fill in more fields... */
1535         return 0;
1536 }
1537
1538 static int wl3501_set_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         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1543         int rc = -EINVAL;
1544
1545         /* FIXME: we support other ARPHRDs...*/
1546         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1547                 goto out;
1548         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1549                 /* FIXME: rescan? */
1550         } else
1551                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1552                 /* FIXME: rescan? deassoc & scan? */
1553         rc = 0;
1554 out:
1555         return rc;
1556 }
1557
1558 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1559                           union iwreq_data *wrqu, char *extra)
1560 {
1561         struct wl3501_card *this = netdev_priv(dev);
1562
1563         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1564         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1565         return 0;
1566 }
1567
1568 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1569                            union iwreq_data *wrqu, char *extra)
1570 {
1571         /*
1572          * FIXME: trigger scanning with a reset, yes, I'm lazy
1573          */
1574         return wl3501_reset(dev);
1575 }
1576
1577 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1578                            union iwreq_data *wrqu, char *extra)
1579 {
1580         struct wl3501_card *this = netdev_priv(dev);
1581         int i;
1582         char *current_ev = extra;
1583         struct iw_event iwe;
1584
1585         for (i = 0; i < this->bss_cnt; ++i) {
1586                 iwe.cmd                 = SIOCGIWAP;
1587                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1588                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1589                 current_ev = iwe_stream_add_event(info, current_ev,
1590                                                   extra + IW_SCAN_MAX_DATA,
1591                                                   &iwe, IW_EV_ADDR_LEN);
1592                 iwe.cmd           = SIOCGIWESSID;
1593                 iwe.u.data.flags  = 1;
1594                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1595                 current_ev = iwe_stream_add_point(info, current_ev,
1596                                                   extra + IW_SCAN_MAX_DATA,
1597                                                   &iwe,
1598                                                   this->bss_set[i].ssid.essid);
1599                 iwe.cmd    = SIOCGIWMODE;
1600                 iwe.u.mode = this->bss_set[i].bss_type;
1601                 current_ev = iwe_stream_add_event(info, current_ev,
1602                                                   extra + IW_SCAN_MAX_DATA,
1603                                                   &iwe, IW_EV_UINT_LEN);
1604                 iwe.cmd = SIOCGIWFREQ;
1605                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1606                 iwe.u.freq.e = 0;
1607                 current_ev = iwe_stream_add_event(info, current_ev,
1608                                                   extra + IW_SCAN_MAX_DATA,
1609                                                   &iwe, IW_EV_FREQ_LEN);
1610                 iwe.cmd = SIOCGIWENCODE;
1611                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1612                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1613                 else
1614                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1615                 iwe.u.data.length = 0;
1616                 current_ev = iwe_stream_add_point(info, current_ev,
1617                                                   extra + IW_SCAN_MAX_DATA,
1618                                                   &iwe, NULL);
1619         }
1620         /* Length of data */
1621         wrqu->data.length = (current_ev - extra);
1622         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1623         return 0;
1624 }
1625
1626 static int wl3501_set_essid(struct net_device *dev,
1627                             struct iw_request_info *info,
1628                             union iwreq_data *wrqu, char *extra)
1629 {
1630         struct wl3501_card *this = netdev_priv(dev);
1631
1632         if (wrqu->data.flags) {
1633                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1634                                          &this->essid.el,
1635                                          extra, wrqu->data.length);
1636         } else { /* We accept any ESSID */
1637                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1638                                          &this->essid.el, "ANY", 3);
1639         }
1640         return wl3501_reset(dev);
1641 }
1642
1643 static int wl3501_get_essid(struct net_device *dev,
1644                             struct iw_request_info *info,
1645                             union iwreq_data *wrqu, char *extra)
1646 {
1647         struct wl3501_card *this = netdev_priv(dev);
1648         unsigned long flags;
1649
1650         spin_lock_irqsave(&this->lock, flags);
1651         wrqu->essid.flags  = 1;
1652         wrqu->essid.length = this->essid.el.len;
1653         memcpy(extra, this->essid.essid, this->essid.el.len);
1654         spin_unlock_irqrestore(&this->lock, flags);
1655         return 0;
1656 }
1657
1658 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1659                            union iwreq_data *wrqu, char *extra)
1660 {
1661         struct wl3501_card *this = netdev_priv(dev);
1662
1663         if (wrqu->data.length > sizeof(this->nick))
1664                 return -E2BIG;
1665         strlcpy(this->nick, extra, wrqu->data.length);
1666         return 0;
1667 }
1668
1669 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1670                            union iwreq_data *wrqu, char *extra)
1671 {
1672         struct wl3501_card *this = netdev_priv(dev);
1673
1674         strlcpy(extra, this->nick, 32);
1675         wrqu->data.length = strlen(extra);
1676         return 0;
1677 }
1678
1679 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1680                            union iwreq_data *wrqu, char *extra)
1681 {
1682         /*
1683          * FIXME: have to see from where to get this info, perhaps this card
1684          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1685          * common with the Planet Access Points. -acme
1686          */
1687         wrqu->bitrate.value = 2000000;
1688         wrqu->bitrate.fixed = 1;
1689         return 0;
1690 }
1691
1692 static int wl3501_get_rts_threshold(struct net_device *dev,
1693                                     struct iw_request_info *info,
1694                                     union iwreq_data *wrqu, char *extra)
1695 {
1696         u16 threshold; /* size checked: it is u16 */
1697         struct wl3501_card *this = netdev_priv(dev);
1698         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1699                                       &threshold, sizeof(threshold));
1700         if (!rc) {
1701                 wrqu->rts.value = threshold;
1702                 wrqu->rts.disabled = threshold >= 2347;
1703                 wrqu->rts.fixed = 1;
1704         }
1705         return rc;
1706 }
1707
1708 static int wl3501_get_frag_threshold(struct net_device *dev,
1709                                      struct iw_request_info *info,
1710                                      union iwreq_data *wrqu, char *extra)
1711 {
1712         u16 threshold; /* size checked: it is u16 */
1713         struct wl3501_card *this = netdev_priv(dev);
1714         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1715                                       &threshold, sizeof(threshold));
1716         if (!rc) {
1717                 wrqu->frag.value = threshold;
1718                 wrqu->frag.disabled = threshold >= 2346;
1719                 wrqu->frag.fixed = 1;
1720         }
1721         return rc;
1722 }
1723
1724 static int wl3501_get_txpow(struct net_device *dev,
1725                             struct iw_request_info *info,
1726                             union iwreq_data *wrqu, char *extra)
1727 {
1728         u16 txpow;
1729         struct wl3501_card *this = netdev_priv(dev);
1730         int rc = wl3501_get_mib_value(this,
1731                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1732                                       &txpow, sizeof(txpow));
1733         if (!rc) {
1734                 wrqu->txpower.value = txpow;
1735                 wrqu->txpower.disabled = 0;
1736                 /*
1737                  * From the MIB values I think this can be configurable,
1738                  * as it lists several tx power levels -acme
1739                  */
1740                 wrqu->txpower.fixed = 0;
1741                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1742         }
1743         return rc;
1744 }
1745
1746 static int wl3501_get_retry(struct net_device *dev,
1747                             struct iw_request_info *info,
1748                             union iwreq_data *wrqu, char *extra)
1749 {
1750         u8 retry; /* size checked: it is u8 */
1751         struct wl3501_card *this = netdev_priv(dev);
1752         int rc = wl3501_get_mib_value(this,
1753                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1754                                       &retry, sizeof(retry));
1755         if (rc)
1756                 goto out;
1757         if (wrqu->retry.flags & IW_RETRY_LONG) {
1758                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1759                 goto set_value;
1760         }
1761         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1762                                   &retry, sizeof(retry));
1763         if (rc)
1764                 goto out;
1765         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1766 set_value:
1767         wrqu->retry.value = retry;
1768         wrqu->retry.disabled = 0;
1769 out:
1770         return rc;
1771 }
1772
1773 static int wl3501_get_encode(struct net_device *dev,
1774                              struct iw_request_info *info,
1775                              union iwreq_data *wrqu, char *extra)
1776 {
1777         u8 implemented, restricted, keys[100], len_keys, tocopy;
1778         struct wl3501_card *this = netdev_priv(dev);
1779         int rc = wl3501_get_mib_value(this,
1780                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1781                                       &implemented, sizeof(implemented));
1782         if (rc)
1783                 goto out;
1784         if (!implemented) {
1785                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1786                 goto out;
1787         }
1788         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1789                                   &restricted, sizeof(restricted));
1790         if (rc)
1791                 goto out;
1792         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1793                                             IW_ENCODE_OPEN;
1794         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1795                                   &len_keys, sizeof(len_keys));
1796         if (rc)
1797                 goto out;
1798         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1799                                   keys, len_keys);
1800         if (rc)
1801                 goto out;
1802         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1803         tocopy = min_t(u8, tocopy, 100);
1804         wrqu->encoding.length = tocopy;
1805         memcpy(extra, keys, tocopy);
1806 out:
1807         return rc;
1808 }
1809
1810 static int wl3501_get_power(struct net_device *dev,
1811                             struct iw_request_info *info,
1812                             union iwreq_data *wrqu, char *extra)
1813 {
1814         u8 pwr_state;
1815         struct wl3501_card *this = netdev_priv(dev);
1816         int rc = wl3501_get_mib_value(this,
1817                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1818                                       &pwr_state, sizeof(pwr_state));
1819         if (rc)
1820                 goto out;
1821         wrqu->power.disabled = !pwr_state;
1822         wrqu->power.flags = IW_POWER_ON;
1823 out:
1824         return rc;
1825 }
1826
1827 static const iw_handler wl3501_handler[] = {
1828         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1829         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1830         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1831         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1832         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1833         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1834         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1835         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1836         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1837         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1838         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1839         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1840         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1841         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1842         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1843         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1844         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1845         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1846         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1847         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1848         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1849         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1850         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1851         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1852         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1853         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1854 };
1855
1856 static const struct iw_handler_def wl3501_handler_def = {
1857         .num_standard   = ARRAY_SIZE(wl3501_handler),
1858         .standard       = (iw_handler *)wl3501_handler,
1859         .get_wireless_stats = wl3501_get_wireless_stats,
1860 };
1861
1862 static const struct net_device_ops wl3501_netdev_ops = {
1863         .ndo_open               = wl3501_open,
1864         .ndo_stop               = wl3501_close,
1865         .ndo_start_xmit         = wl3501_hard_start_xmit,
1866         .ndo_tx_timeout         = wl3501_tx_timeout,
1867         .ndo_change_mtu         = eth_change_mtu,
1868         .ndo_set_mac_address    = eth_mac_addr,
1869         .ndo_validate_addr      = eth_validate_addr,
1870 };
1871
1872 /**
1873  * wl3501_attach - creates an "instance" of the driver
1874  *
1875  * Creates an "instance" of the driver, allocating local data structures for
1876  * one device.  The device is registered with Card Services.
1877  *
1878  * The dev_link structure is initialized, but we don't actually configure the
1879  * card at this point -- we wait until we receive a card insertion event.
1880  */
1881 static int wl3501_probe(struct pcmcia_device *p_dev)
1882 {
1883         struct net_device *dev;
1884         struct wl3501_card *this;
1885
1886         /* The io structure describes IO port mapping */
1887         p_dev->resource[0]->end = 16;
1888         p_dev->resource[0]->flags       = IO_DATA_PATH_WIDTH_8;
1889
1890         /* General socket configuration */
1891         p_dev->conf.Attributes  = CONF_ENABLE_IRQ;
1892         p_dev->conf.IntType     = INT_MEMORY_AND_IO;
1893         p_dev->conf.ConfigIndex = 1;
1894
1895         dev = alloc_etherdev(sizeof(struct wl3501_card));
1896         if (!dev)
1897                 goto out_link;
1898
1899
1900         dev->netdev_ops         = &wl3501_netdev_ops;
1901         dev->watchdog_timeo     = 5 * HZ;
1902
1903         this = netdev_priv(dev);
1904         this->wireless_data.spy_data = &this->spy_data;
1905         this->p_dev = p_dev;
1906         dev->wireless_data      = &this->wireless_data;
1907         dev->wireless_handlers  = &wl3501_handler_def;
1908         SET_ETHTOOL_OPS(dev, &ops);
1909         netif_stop_queue(dev);
1910         p_dev->priv = dev;
1911
1912         return wl3501_config(p_dev);
1913 out_link:
1914         return -ENOMEM;
1915 }
1916
1917 /**
1918  * wl3501_config - configure the PCMCIA socket and make eth device available
1919  * @link - FILL_IN
1920  *
1921  * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1922  * received, to configure the PCMCIA socket, and to make the ethernet device
1923  * available to the system.
1924  */
1925 static int wl3501_config(struct pcmcia_device *link)
1926 {
1927         struct net_device *dev = link->priv;
1928         int i = 0, j, ret;
1929         struct wl3501_card *this;
1930
1931         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1932          * want, you can also read the card's config table to pick addresses --
1933          * see the serial driver for an example. */
1934         link->io_lines = 5;
1935
1936         for (j = 0x280; j < 0x400; j += 0x20) {
1937                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1938                  * 0x200-0x2ff, and so on, because this seems safer */
1939                 link->resource[0]->start = j;
1940                 link->resource[1]->start = link->resource[0]->start + 0x10;
1941                 i = pcmcia_request_io(link);
1942                 if (i == 0)
1943                         break;
1944         }
1945         if (i != 0)
1946                 goto failed;
1947
1948         /* Now allocate an interrupt line. Note that this does not actually
1949          * assign a handler to the interrupt. */
1950
1951         ret = pcmcia_request_irq(link, wl3501_interrupt);
1952         if (ret)
1953                 goto failed;
1954
1955         /* This actually configures the PCMCIA socket -- setting up the I/O
1956          * windows and the interrupt mapping.  */
1957
1958         ret = pcmcia_request_configuration(link, &link->conf);
1959         if (ret)
1960                 goto failed;
1961
1962         dev->irq = link->irq;
1963         dev->base_addr = link->resource[0]->start;
1964         SET_NETDEV_DEV(dev, &link->dev);
1965         if (register_netdev(dev)) {
1966                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1967                 goto failed;
1968         }
1969
1970         this = netdev_priv(dev);
1971
1972         this->base_addr = dev->base_addr;
1973
1974         if (!wl3501_get_flash_mac_addr(this)) {
1975                 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
1976                        dev->name);
1977                 unregister_netdev(dev);
1978                 goto failed;
1979         }
1980
1981         for (i = 0; i < 6; i++)
1982                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1983
1984         /* print probe information */
1985         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1986                "MAC addr in flash ROM:%pM\n",
1987                dev->name, this->base_addr, (int)dev->irq,
1988                dev->dev_addr);
1989         /*
1990          * Initialize card parameters - added by jss
1991          */
1992         this->net_type          = IW_MODE_INFRA;
1993         this->bss_cnt           = 0;
1994         this->join_sta_bss      = 0;
1995         this->adhoc_times       = 0;
1996         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1997                                  "ANY", 3);
1998         this->card_name[0]      = '\0';
1999         this->firmware_date[0]  = '\0';
2000         this->rssi              = 255;
2001         this->chan              = iw_default_channel(this->reg_domain);
2002         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2003         spin_lock_init(&this->lock);
2004         init_waitqueue_head(&this->wait);
2005         netif_start_queue(dev);
2006         return 0;
2007
2008 failed:
2009         wl3501_release(link);
2010         return -ENODEV;
2011 }
2012
2013 /**
2014  * wl3501_release - unregister the net, release PCMCIA configuration
2015  * @arg - link
2016  *
2017  * After a card is removed, wl3501_release() will unregister the net device,
2018  * and release the PCMCIA configuration.  If the device is still open, this
2019  * will be postponed until it is closed.
2020  */
2021 static void wl3501_release(struct pcmcia_device *link)
2022 {
2023         pcmcia_disable_device(link);
2024 }
2025
2026 static int wl3501_suspend(struct pcmcia_device *link)
2027 {
2028         struct net_device *dev = link->priv;
2029
2030         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
2031         if (link->open)
2032                 netif_device_detach(dev);
2033
2034         return 0;
2035 }
2036
2037 static int wl3501_resume(struct pcmcia_device *link)
2038 {
2039         struct net_device *dev = link->priv;
2040
2041         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2042         if (link->open) {
2043                 wl3501_reset(dev);
2044                 netif_device_attach(dev);
2045         }
2046
2047         return 0;
2048 }
2049
2050
2051 static struct pcmcia_device_id wl3501_ids[] = {
2052         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2053         PCMCIA_DEVICE_NULL
2054 };
2055 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2056
2057 static struct pcmcia_driver wl3501_driver = {
2058         .owner          = THIS_MODULE,
2059         .drv            = {
2060                 .name   = "wl3501_cs",
2061         },
2062         .probe          = wl3501_probe,
2063         .remove         = wl3501_detach,
2064         .id_table       = wl3501_ids,
2065         .suspend        = wl3501_suspend,
2066         .resume         = wl3501_resume,
2067 };
2068
2069 static int __init wl3501_init_module(void)
2070 {
2071         return pcmcia_register_driver(&wl3501_driver);
2072 }
2073
2074 static void __exit wl3501_exit_module(void)
2075 {
2076         pcmcia_unregister_driver(&wl3501_driver);
2077 }
2078
2079 module_init(wl3501_init_module);
2080 module_exit(wl3501_exit_module);
2081
2082 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2083               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2084               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2085 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2086 MODULE_LICENSE("GPL");