drivers/net/wireless/wl3501_cs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * WL3501 Wireless LAN PCMCIA Card Driver for Linux
   4  * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
   5  * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   6  * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
   7  *
   8  * References used by Fox Chen while writing the original driver for 2.0.30:
   9  *
  10  *   1. WL24xx packet drivers (tooasm.asm)
  11  *   2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
  12  *   3. IEEE 802.11
  13  *   4. Linux network driver (/usr/src/linux/drivers/net)
  14  *   5. ISA card driver - wl24.c
  15  *   6. Linux PCMCIA skeleton driver - skeleton.c
  16  *   7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
  17  *
  18  * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
  19  *   1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
  20  *      rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
  21  *      (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
  22  *       ETHER/IP/UDP/TCP header, and acknowledgement overhead)
  23  *
  24  * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
  25  * 173 Kbytes/s in TCP.
  26  *
  27  * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
  28  * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
  29  */
  30
  31 #include <linux/delay.h>
  32 #include <linux/types.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/in.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/fcntl.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/ioport.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/skbuff.h>
  43 #include <linux/slab.h>
  44 #include <linux/string.h>
  45 #include <linux/wireless.h>
  46 #include <net/cfg80211.h>
  47
  48 #include <net/iw_handler.h>
  49
  50 #include <pcmcia/cistpl.h>
  51 #include <pcmcia/cisreg.h>
  52 #include <pcmcia/ds.h>
  53
  54 #include <asm/io.h>
  55 #include <linux/uaccess.h>
  56
  57 #include "wl3501.h"
  58
  59 #ifndef __i386__
  60 #define slow_down_io()
  61 #endif
  62
  63 /* For rough constant delay */
  64 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  65
  66
  67
  68 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  69 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  70 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  71
  72 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  73 #define WL3501_MAX_ADHOC_TRIES 16
  74
  75 #define WL3501_RESUME   0
  76 #define WL3501_SUSPEND  1
  77
  78 static int wl3501_config(struct pcmcia_device *link);
  79 static void wl3501_release(struct pcmcia_device *link);
  80
  81 static const struct {
  82         int reg_domain;
  83         int min, max, deflt;
  84 } iw_channel_table[] = {
  85         {
  86                 .reg_domain = IW_REG_DOMAIN_FCC,
  87                 .min        = 1,
  88                 .max        = 11,
  89                 .deflt      = 1,
  90         },
  91         {
  92                 .reg_domain = IW_REG_DOMAIN_DOC,
  93                 .min        = 1,
  94                 .max        = 11,
  95                 .deflt      = 1,
  96         },
  97         {
  98                 .reg_domain = IW_REG_DOMAIN_ETSI,
  99                 .min        = 1,
 100                 .max        = 13,
 101                 .deflt      = 1,
 102         },
 103         {
 104                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 105                 .min        = 10,
 106                 .max        = 11,
 107                 .deflt      = 10,
 108         },
 109         {
 110                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 111                 .min        = 10,
 112                 .max        = 13,
 113                 .deflt      = 10,
 114         },
 115         {
 116                 .reg_domain = IW_REG_DOMAIN_MKK,
 117                 .min        = 14,
 118                 .max        = 14,
 119                 .deflt      = 14,
 120         },
 121         {
 122                 .reg_domain = IW_REG_DOMAIN_MKK1,
 123                 .min        = 1,
 124                 .max        = 14,
 125                 .deflt      = 1,
 126         },
 127         {
 128                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 129                 .min        = 3,
 130                 .max        = 9,
 131                 .deflt      = 9,
 132         },
 133 };
 134
 135 /**
 136  * iw_valid_channel - validate channel in regulatory domain
 137  * @reg_comain: regulatory domain
 138  * @channel: channel to validate
 139  *
 140  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 141  */
 142 static int iw_valid_channel(int reg_domain, int channel)
 143 {
 144         int i, rc = 0;
 145
 146         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 147                 if (reg_domain == iw_channel_table[i].reg_domain) {
 148                         rc = channel >= iw_channel_table[i].min &&
 149                              channel <= iw_channel_table[i].max;
 150                         break;
 151                 }
 152         return rc;
 153 }
 154
 155 /**
 156  * iw_default_channel - get default channel for a regulatory domain
 157  * @reg_domain: regulatory domain
 158  *
 159  * Returns the default channel for a regulatory domain
 160  */
 161 static int iw_default_channel(int reg_domain)
 162 {
 163         int i, rc = 1;
 164
 165         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 166                 if (reg_domain == iw_channel_table[i].reg_domain) {
 167                         rc = iw_channel_table[i].deflt;
 168                         break;
 169                 }
 170         return rc;
 171 }
 172
 173 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 174                                      struct iw_mgmt_info_element *el,
 175                                      void *value, int len)
 176 {
 177         el->id  = id;
 178         el->len = len;
 179         memcpy(el->data, value, len);
 180 }
 181
 182 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 183                                       struct iw_mgmt_info_element *from)
 184 {
 185         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 186 }
 187
 188 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 189 {
 190         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 191 }
 192
 193 /*
 194  * Get Ethernet MAC address.
 195  *
 196  * WARNING: We switch to FPAGE0 and switc back again.
 197  *          Making sure there is no other WL function beening called by ISR.
 198  */
 199 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 200 {
 201         int base_addr = this->base_addr;
 202
 203         /* get MAC addr */
 204         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 205         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 206         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 207
 208         /* wait for reading EEPROM */
 209         WL3501_NOPLOOP(100);
 210         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 211         WL3501_NOPLOOP(100);
 212         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 213         WL3501_NOPLOOP(100);
 214         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 215         WL3501_NOPLOOP(100);
 216         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 217         WL3501_NOPLOOP(100);
 218         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 219         WL3501_NOPLOOP(100);
 220         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 221         WL3501_NOPLOOP(100);
 222         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 223         WL3501_NOPLOOP(100);
 224         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 225         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 226         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 227         WL3501_NOPLOOP(100);
 228         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 229         WL3501_NOPLOOP(100);
 230         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 231         /* switch to SRAM Page 0 (for safety) */
 232         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 233
 234         /* The MAC addr should be 00:60:... */
 235         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 236 }
 237
 238 /**
 239  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 240  * @this: Card
 241  * @dest: Card addressing space
 242  * @src: PC addressing space
 243  * @size: Bytes to move
 244  *
 245  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 246  */
 247 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 248                               int size)
 249 {
 250         /* switch to SRAM Page 0 */
 251         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 252                                                    WL3501_BSS_SPAGE0);
 253         /* set LMAL and LMAH */
 254         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 255         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 256
 257         /* rep out to Port A */
 258         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 259 }
 260
 261 /**
 262  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 263  * @this: Card
 264  * @src: Card addressing space
 265  * @dest: PC addressing space
 266  * @size: Bytes to move
 267  *
 268  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 269  */
 270 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 271                                 int size)
 272 {
 273         /* switch to SRAM Page 0 */
 274         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 275                                                   WL3501_BSS_SPAGE0);
 276         /* set LMAL and LMAH */
 277         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 278         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 279
 280         /* rep get from Port A */
 281         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 282 }
 283
 284 /*
 285  * Get/Allocate a free Tx Data Buffer
 286  *
 287  *  *--------------*-----------------*----------------------------------*
 288  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 289  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 290  *  *--------------*-----------------*----------------------------------*
 291  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 292  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 293  *
 294  * Return = Position in Card
 295  */
 296 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 297 {
 298         u16 next, blk_cnt = 0, zero = 0;
 299         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 300         u16 ret = 0;
 301
 302         if (full_len > this->tx_buffer_cnt * 254)
 303                 goto out;
 304         ret = this->tx_buffer_head;
 305         while (full_len) {
 306                 if (full_len < 254)
 307                         full_len = 0;
 308                 else
 309                         full_len -= 254;
 310                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 311                                     sizeof(next));
 312                 if (!full_len)
 313                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 314                                           sizeof(zero));
 315                 this->tx_buffer_head = next;
 316                 blk_cnt++;
 317                 /* if buffer is not enough */
 318                 if (!next && full_len) {
 319                         this->tx_buffer_head = ret;
 320                         ret = 0;
 321                         goto out;
 322                 }
 323         }
 324         this->tx_buffer_cnt -= blk_cnt;
 325 out:
 326         return ret;
 327 }
 328
 329 /*
 330  * Free an allocated Tx Buffer. ptr must be correct position.
 331  */
 332 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 333 {
 334         /* check if all space is not free */
 335         if (!this->tx_buffer_head)
 336                 this->tx_buffer_head = ptr;
 337         else
 338                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 339                                   &ptr, sizeof(ptr));
 340         while (ptr) {
 341                 u16 next;
 342
 343                 this->tx_buffer_cnt++;
 344                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 345                 this->tx_buffer_tail = ptr;
 346                 ptr = next;
 347         }
 348 }
 349
 350 static int wl3501_esbq_req_test(struct wl3501_card *this)
 351 {
 352         u8 tmp = 0;
 353
 354         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 355         return tmp & 0x80;
 356 }
 357
 358 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 359 {
 360         u16 tmp = 0;
 361
 362         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 363         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 364         this->esbq_req_head += 4;
 365         if (this->esbq_req_head >= this->esbq_req_end)
 366                 this->esbq_req_head = this->esbq_req_start;
 367 }
 368
 369 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 370 {
 371         int rc = -EIO;
 372
 373         if (wl3501_esbq_req_test(this)) {
 374                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 375                 if (ptr) {
 376                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 377                         wl3501_esbq_req(this, &ptr);
 378                         rc = 0;
 379                 }
 380         }
 381         return rc;
 382 }
 383
 384 static int wl3501_request_mib(struct wl3501_card *this, u8 index, void *bf)
 385 {
 386         struct wl3501_get_req sig = {
 387                 .sig_id     = WL3501_SIG_GET_REQ,
 388                 .mib_attrib = index,
 389         };
 390         unsigned long flags;
 391         int rc = -EIO;
 392
 393         spin_lock_irqsave(&this->lock, flags);
 394         if (wl3501_esbq_req_test(this)) {
 395                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 396                 if (ptr) {
 397                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 398                         wl3501_esbq_req(this, &ptr);
 399                         this->sig_get_confirm.mib_status = 255;
 400                         rc = 0;
 401                 }
 402         }
 403         spin_unlock_irqrestore(&this->lock, flags);
 404
 405         return rc;
 406 }
 407
 408 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 409                                 void *bf, int size)
 410 {
 411         int rc;
 412
 413         rc = wl3501_request_mib(this, index, bf);
 414         if (rc)
 415                 return rc;
 416
 417         rc = wait_event_interruptible(this->wait,
 418                 this->sig_get_confirm.mib_status != 255);
 419         if (rc)
 420                 return rc;
 421
 422         memcpy(bf, this->sig_get_confirm.mib_value, size);
 423         return 0;
 424 }
 425
 426 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 427 {
 428         struct wl3501_pwr_mgmt_req sig = {
 429                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 430                 .pwr_save       = suspend,
 431                 .wake_up        = !suspend,
 432                 .receive_dtims  = 10,
 433         };
 434         unsigned long flags;
 435         int rc = -EIO;
 436
 437         spin_lock_irqsave(&this->lock, flags);
 438         if (wl3501_esbq_req_test(this)) {
 439                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 440                 if (ptr) {
 441                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 442                         wl3501_esbq_req(this, &ptr);
 443                         this->sig_pwr_mgmt_confirm.status = 255;
 444                         spin_unlock_irqrestore(&this->lock, flags);
 445                         rc = wait_event_interruptible(this->wait,
 446                                 this->sig_pwr_mgmt_confirm.status != 255);
 447                         printk(KERN_INFO "%s: %s status=%d\n", __func__,
 448                                suspend ? "suspend" : "resume",
 449                                this->sig_pwr_mgmt_confirm.status);
 450                         goto out;
 451                 }
 452         }
 453         spin_unlock_irqrestore(&this->lock, flags);
 454 out:
 455         return rc;
 456 }
 457
 458 /**
 459  * wl3501_send_pkt - Send a packet.
 460  * @this: Card
 461  *
 462  * Send a packet.
 463  *
 464  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 465  *                                   data[6] - data[11] is Src MAC Addr)
 466  * Ref: IEEE 802.11
 467  */
 468 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 469 {
 470         u16 bf, sig_bf, next, tmplen, pktlen;
 471         struct wl3501_md_req sig = {
 472                 .sig_id = WL3501_SIG_MD_REQ,
 473         };
 474         size_t sig_addr_len = sizeof(sig.addr);
 475         u8 *pdata = (char *)data;
 476         int rc = -EIO;
 477
 478         if (wl3501_esbq_req_test(this)) {
 479                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 480                 rc = -ENOMEM;
 481                 if (!sig_bf)    /* No free buffer available */
 482                         goto out;
 483                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 484                 if (!bf) {
 485                         /* No free buffer available */
 486                         wl3501_free_tx_buffer(this, sig_bf);
 487                         goto out;
 488                 }
 489                 rc = 0;
 490                 memcpy(&sig.addr, pdata, sig_addr_len);
 491                 pktlen = len - sig_addr_len;
 492                 pdata += sig_addr_len;
 493                 sig.data = bf;
 494                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 495                         u8 addr4[ETH_ALEN] = {
 496                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 497                         };
 498
 499                         wl3501_set_to_wla(this, bf + 2 +
 500                                           offsetof(struct wl3501_tx_hdr, addr4),
 501                                           addr4, sizeof(addr4));
 502                         sig.size = pktlen + 24 + 4 + 6;
 503                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 504                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 505                                 pktlen -= tmplen;
 506                         } else {
 507                                 tmplen = pktlen;
 508                                 pktlen = 0;
 509                         }
 510                         wl3501_set_to_wla(this,
 511                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 512                                           pdata, tmplen);
 513                         pdata += tmplen;
 514                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 515                         bf = next;
 516                 } else {
 517                         sig.size = pktlen + 24 + 4 - 2;
 518                         pdata += 2;
 519                         pktlen -= 2;
 520                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 521                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 522                                 pktlen -= tmplen;
 523                         } else {
 524                                 tmplen = pktlen;
 525                                 pktlen = 0;
 526                         }
 527                         wl3501_set_to_wla(this, bf + 2 +
 528                                           offsetof(struct wl3501_tx_hdr, addr4),
 529                                           pdata, tmplen);
 530                         pdata += tmplen;
 531                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 532                         bf = next;
 533                 }
 534                 while (pktlen > 0) {
 535                         if (pktlen > 254) {
 536                                 tmplen = 254;
 537                                 pktlen -= 254;
 538                         } else {
 539                                 tmplen = pktlen;
 540                                 pktlen = 0;
 541                         }
 542                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 543                         pdata += tmplen;
 544                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 545                         bf = next;
 546                 }
 547                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 548                 wl3501_esbq_req(this, &sig_bf);
 549         }
 550 out:
 551         return rc;
 552 }
 553
 554 static int wl3501_mgmt_resync(struct wl3501_card *this)
 555 {
 556         struct wl3501_resync_req sig = {
 557                 .sig_id = WL3501_SIG_RESYNC_REQ,
 558         };
 559
 560         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 561 }
 562
 563 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 564 {
 565         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 566                                                  WL3501_NET_TYPE_ADHOC;
 567 }
 568
 569 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 570 {
 571         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 572                                                  WL3501_MGMT_CAPABILITY_IBSS;
 573 }
 574
 575 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 576 {
 577         struct wl3501_scan_req sig = {
 578                 .sig_id         = WL3501_SIG_SCAN_REQ,
 579                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 580                 .probe_delay    = 0x10,
 581                 .min_chan_time  = chan_time,
 582                 .max_chan_time  = chan_time,
 583                 .bss_type       = wl3501_fw_bss_type(this),
 584         };
 585
 586         this->bss_cnt = this->join_sta_bss = 0;
 587         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 588 }
 589
 590 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 591 {
 592         struct wl3501_join_req sig = {
 593                 .sig_id           = WL3501_SIG_JOIN_REQ,
 594                 .timeout          = 10,
 595                 .req.ds_pset = {
 596                         .el = {
 597                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 598                                 .len = 1,
 599                         },
 600                         .chan   = this->chan,
 601                 },
 602         };
 603
 604         memcpy(&sig.req, &this->bss_set[stas].req, sizeof(sig.req));
 605         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 606 }
 607
 608 static int wl3501_mgmt_start(struct wl3501_card *this)
 609 {
 610         struct wl3501_start_req sig = {
 611                 .sig_id                 = WL3501_SIG_START_REQ,
 612                 .beacon_period          = 400,
 613                 .dtim_period            = 1,
 614                 .ds_pset = {
 615                         .el = {
 616                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 617                                 .len = 1,
 618                         },
 619                         .chan   = this->chan,
 620                 },
 621                 .bss_basic_rset = {
 622                         .el = {
 623                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 624                                 .len = 2,
 625                         },
 626                         .data_rate_labels = {
 627                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 628                                       IW_MGMT_RATE_LABEL_1MBIT,
 629                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 630                                       IW_MGMT_RATE_LABEL_2MBIT,
 631                         },
 632                 },
 633                 .operational_rset       = {
 634                         .el = {
 635                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 636                                 .len = 2,
 637                         },
 638                         .data_rate_labels = {
 639                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 640                                       IW_MGMT_RATE_LABEL_1MBIT,
 641                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 642                                       IW_MGMT_RATE_LABEL_2MBIT,
 643                         },
 644                 },
 645                 .ibss_pset              = {
 646                         .el = {
 647                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 648                                 .len     = 2,
 649                         },
 650                         .atim_window = 10,
 651                 },
 652                 .bss_type               = wl3501_fw_bss_type(this),
 653                 .cap_info               = wl3501_fw_cap_info(this),
 654         };
 655
 656         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 657         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 658         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 659 }
 660
 661 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 662 {
 663         u16 i = 0;
 664         int matchflag = 0;
 665         struct wl3501_scan_confirm sig;
 666
 667         pr_debug("entry");
 668         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 669         if (sig.status == WL3501_STATUS_SUCCESS) {
 670                 pr_debug("success");
 671                 if ((this->net_type == IW_MODE_INFRA &&
 672                      (sig.req.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 673                     (this->net_type == IW_MODE_ADHOC &&
 674                      (sig.req.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 675                     this->net_type == IW_MODE_AUTO) {
 676                         if (!this->essid.el.len)
 677                                 matchflag = 1;
 678                         else if (this->essid.el.len == 3 &&
 679                                  !memcmp(this->essid.essid, "ANY", 3))
 680                                 matchflag = 1;
 681                         else if (this->essid.el.len != sig.req.ssid.el.len)
 682                                 matchflag = 0;
 683                         else if (memcmp(this->essid.essid, sig.req.ssid.essid,
 684                                         this->essid.el.len))
 685                                 matchflag = 0;
 686                         else
 687                                 matchflag = 1;
 688                         if (matchflag) {
 689                                 for (i = 0; i < this->bss_cnt; i++) {
 690                                         if (ether_addr_equal_unaligned(this->bss_set[i].req.bssid,
 691                                                                        sig.req.bssid)) {
 692                                                 matchflag = 0;
 693                                                 break;
 694                                         }
 695                                 }
 696                         }
 697                         if (matchflag && (i < 20)) {
 698                                 memcpy(&this->bss_set[i].req,
 699                                        &sig.req, sizeof(sig.req));
 700                                 this->bss_cnt++;
 701                                 this->rssi = sig.rssi;
 702                                 this->bss_set[i].rssi = sig.rssi;
 703                         }
 704                 }
 705         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 706                 pr_debug("timeout");
 707                 this->join_sta_bss = 0;
 708                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 709                         if (!wl3501_mgmt_join(this, i))
 710                                 break;
 711                 this->join_sta_bss = i;
 712                 if (this->join_sta_bss == this->bss_cnt) {
 713                         if (this->net_type == IW_MODE_INFRA)
 714                                 wl3501_mgmt_scan(this, 100);
 715                         else {
 716                                 this->adhoc_times++;
 717                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 718                                         wl3501_mgmt_start(this);
 719                                 else
 720                                         wl3501_mgmt_scan(this, 100);
 721                         }
 722                 }
 723         }
 724 }
 725
 726 /**
 727  * wl3501_block_interrupt - Mask interrupt from SUTRO
 728  * @this: Card
 729  *
 730  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 731  * Return: 1 if interrupt is originally enabled
 732  */
 733 static int wl3501_block_interrupt(struct wl3501_card *this)
 734 {
 735         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 736         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 737                         WL3501_GCR_ENECINT));
 738
 739         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 740         return old & WL3501_GCR_ENECINT;
 741 }
 742
 743 /**
 744  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 745  * @this: Card
 746  *
 747  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 748  * Return: 1 if interrupt is originally enabled
 749  */
 750 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 751 {
 752         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 753         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 754                   WL3501_GCR_ENECINT;
 755
 756         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 757         return old & WL3501_GCR_ENECINT;
 758 }
 759
 760 /**
 761  * wl3501_receive - Receive data from Receive Queue.
 762  *
 763  * Receive data from Receive Queue.
 764  *
 765  * @this: card
 766  * @bf: address of host
 767  * @size: size of buffer.
 768  */
 769 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 770 {
 771         u16 next_addr, next_addr1;
 772         u8 *data = bf + 12;
 773
 774         size -= 12;
 775         wl3501_get_from_wla(this, this->start_seg + 2,
 776                             &next_addr, sizeof(next_addr));
 777         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 778                 wl3501_get_from_wla(this,
 779                                     this->start_seg +
 780                                         sizeof(struct wl3501_rx_hdr), data,
 781                                     WL3501_BLKSZ -
 782                                         sizeof(struct wl3501_rx_hdr));
 783                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 784                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 785         } else {
 786                 wl3501_get_from_wla(this,
 787                                     this->start_seg +
 788                                         sizeof(struct wl3501_rx_hdr),
 789                                     data, size);
 790                 size = 0;
 791         }
 792         while (size > 0) {
 793                 if (size > WL3501_BLKSZ - 5) {
 794                         wl3501_get_from_wla(this, next_addr + 5, data,
 795                                             WL3501_BLKSZ - 5);
 796                         size -= WL3501_BLKSZ - 5;
 797                         data += WL3501_BLKSZ - 5;
 798                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 799                                             sizeof(next_addr1));
 800                         next_addr = next_addr1;
 801                 } else {
 802                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 803                         size = 0;
 804                 }
 805         }
 806         return 0;
 807 }
 808
 809 static void wl3501_esbq_req_free(struct wl3501_card *this)
 810 {
 811         u8 tmp;
 812         u16 addr;
 813
 814         if (this->esbq_req_head == this->esbq_req_tail)
 815                 goto out;
 816         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 817         if (!(tmp & 0x80))
 818                 goto out;
 819         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 820         wl3501_free_tx_buffer(this, addr);
 821         this->esbq_req_tail += 4;
 822         if (this->esbq_req_tail >= this->esbq_req_end)
 823                 this->esbq_req_tail = this->esbq_req_start;
 824 out:
 825         return;
 826 }
 827
 828 static int wl3501_esbq_confirm(struct wl3501_card *this)
 829 {
 830         u8 tmp;
 831
 832         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 833         return tmp & 0x80;
 834 }
 835
 836 static void wl3501_online(struct net_device *dev)
 837 {
 838         struct wl3501_card *this = netdev_priv(dev);
 839
 840         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 841                dev->name, this->bssid);
 842         netif_wake_queue(dev);
 843 }
 844
 845 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 846 {
 847         u8 tmp = 0;
 848
 849         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 850         this->esbq_confirm += 4;
 851         if (this->esbq_confirm >= this->esbq_confirm_end)
 852                 this->esbq_confirm = this->esbq_confirm_start;
 853 }
 854
 855 static int wl3501_mgmt_auth(struct wl3501_card *this)
 856 {
 857         struct wl3501_auth_req sig = {
 858                 .sig_id  = WL3501_SIG_AUTH_REQ,
 859                 .type    = WL3501_SYS_TYPE_OPEN,
 860                 .timeout = 1000,
 861         };
 862
 863         pr_debug("entry");
 864         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 865         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 866 }
 867
 868 static int wl3501_mgmt_association(struct wl3501_card *this)
 869 {
 870         struct wl3501_assoc_req sig = {
 871                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 872                 .timeout         = 1000,
 873                 .listen_interval = 5,
 874                 .cap_info        = this->cap_info,
 875         };
 876
 877         pr_debug("entry");
 878         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 879         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 880 }
 881
 882 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 883 {
 884         struct wl3501_card *this = netdev_priv(dev);
 885         struct wl3501_join_confirm sig;
 886
 887         pr_debug("entry");
 888         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 889         if (sig.status == WL3501_STATUS_SUCCESS) {
 890                 if (this->net_type == IW_MODE_INFRA) {
 891                         if (this->join_sta_bss < this->bss_cnt) {
 892                                 const int i = this->join_sta_bss;
 893                                 memcpy(this->bssid,
 894                                        this->bss_set[i].req.bssid, ETH_ALEN);
 895                                 this->chan = this->bss_set[i].req.ds_pset.chan;
 896                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 897                                                      &this->bss_set[i].req.ssid.el);
 898                                 wl3501_mgmt_auth(this);
 899                         }
 900                 } else {
 901                         const int i = this->join_sta_bss;
 902
 903                         memcpy(&this->bssid, &this->bss_set[i].req.bssid, ETH_ALEN);
 904                         this->chan = this->bss_set[i].req.ds_pset.chan;
 905                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 906                                                   &this->bss_set[i].req.ssid.el);
 907                         wl3501_online(dev);
 908                 }
 909         } else {
 910                 int i;
 911                 this->join_sta_bss++;
 912                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 913                         if (!wl3501_mgmt_join(this, i))
 914                                 break;
 915                 this->join_sta_bss = i;
 916                 if (this->join_sta_bss == this->bss_cnt) {
 917                         if (this->net_type == IW_MODE_INFRA)
 918                                 wl3501_mgmt_scan(this, 100);
 919                         else {
 920                                 this->adhoc_times++;
 921                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 922                                         wl3501_mgmt_start(this);
 923                                 else
 924                                         wl3501_mgmt_scan(this, 100);
 925                         }
 926                 }
 927         }
 928 }
 929
 930 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 931                                           struct wl3501_card *this)
 932 {
 933         if (this->net_type == IW_MODE_INFRA) {
 934                 printk(KERN_INFO "Wireless LAN offline\n");
 935                 netif_stop_queue(dev);
 936                 wl3501_mgmt_resync(this);
 937         }
 938 }
 939
 940 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 941                                                struct wl3501_card *this,
 942                                                u16 addr)
 943 {
 944         struct wl3501_md_confirm sig;
 945
 946         pr_debug("entry");
 947         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 948         wl3501_free_tx_buffer(this, sig.data);
 949         if (netif_queue_stopped(dev))
 950                 netif_wake_queue(dev);
 951 }
 952
 953 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 954                                            struct wl3501_card *this, u16 addr)
 955 {
 956         struct wl3501_md_ind sig;
 957         struct sk_buff *skb;
 958         u8 rssi, addr4[ETH_ALEN];
 959         u16 pkt_len;
 960
 961         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 962         this->start_seg = sig.data;
 963         wl3501_get_from_wla(this,
 964                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 965                             &rssi, sizeof(rssi));
 966         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 967
 968         wl3501_get_from_wla(this,
 969                             sig.data +
 970                                 offsetof(struct wl3501_rx_hdr, addr4),
 971                             &addr4, sizeof(addr4));
 972         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 973               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 974                 printk(KERN_INFO "Unsupported packet type!\n");
 975                 return;
 976         }
 977         pkt_len = sig.size + 12 - 24 - 4 - 6;
 978
 979         skb = dev_alloc_skb(pkt_len + 5);
 980
 981         if (!skb) {
 982                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
 983                        dev->name, pkt_len);
 984                 dev->stats.rx_dropped++;
 985         } else {
 986                 skb->dev = dev;
 987                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
 988                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.addr,
 989                                         sizeof(sig.addr));
 990                 wl3501_receive(this, skb->data, pkt_len);
 991                 skb_put(skb, pkt_len);
 992                 skb->protocol   = eth_type_trans(skb, dev);
 993                 dev->stats.rx_packets++;
 994                 dev->stats.rx_bytes += skb->len;
 995                 netif_rx(skb);
 996         }
 997 }
 998
 999 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1000                                                 u16 addr, void *sig, int size)
1001 {
1002         pr_debug("entry");
1003         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1004                             sizeof(this->sig_get_confirm));
1005         wake_up(&this->wait);
1006 }
1007
1008 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1009                                                   struct wl3501_card *this,
1010                                                   u16 addr)
1011 {
1012         struct wl3501_start_confirm sig;
1013
1014         pr_debug("entry");
1015         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1016         if (sig.status == WL3501_STATUS_SUCCESS)
1017                 netif_wake_queue(dev);
1018 }
1019
1020 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1021                                                   u16 addr)
1022 {
1023         struct wl3501_card *this = netdev_priv(dev);
1024         struct wl3501_assoc_confirm sig;
1025
1026         pr_debug("entry");
1027         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1028
1029         if (sig.status == WL3501_STATUS_SUCCESS)
1030                 wl3501_online(dev);
1031 }
1032
1033 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1034                                                  u16 addr)
1035 {
1036         struct wl3501_auth_confirm sig;
1037
1038         pr_debug("entry");
1039         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1040
1041         if (sig.status == WL3501_STATUS_SUCCESS)
1042                 wl3501_mgmt_association(this);
1043         else
1044                 wl3501_mgmt_resync(this);
1045 }
1046
1047 static inline void wl3501_rx_interrupt(struct net_device *dev)
1048 {
1049         int morepkts;
1050         u16 addr;
1051         u8 sig_id;
1052         struct wl3501_card *this = netdev_priv(dev);
1053
1054         pr_debug("entry");
1055 loop:
1056         morepkts = 0;
1057         if (!wl3501_esbq_confirm(this))
1058                 goto free;
1059         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1060         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1061
1062         switch (sig_id) {
1063         case WL3501_SIG_DEAUTH_IND:
1064         case WL3501_SIG_DISASSOC_IND:
1065         case WL3501_SIG_ALARM:
1066                 wl3501_alarm_interrupt(dev, this);
1067                 break;
1068         case WL3501_SIG_MD_CONFIRM:
1069                 wl3501_md_confirm_interrupt(dev, this, addr);
1070                 break;
1071         case WL3501_SIG_MD_IND:
1072                 wl3501_md_ind_interrupt(dev, this, addr);
1073                 break;
1074         case WL3501_SIG_GET_CONFIRM:
1075                 wl3501_get_confirm_interrupt(this, addr,
1076                                              &this->sig_get_confirm,
1077                                              sizeof(this->sig_get_confirm));
1078                 break;
1079         case WL3501_SIG_PWR_MGMT_CONFIRM:
1080                 wl3501_get_confirm_interrupt(this, addr,
1081                                              &this->sig_pwr_mgmt_confirm,
1082                                             sizeof(this->sig_pwr_mgmt_confirm));
1083                 break;
1084         case WL3501_SIG_START_CONFIRM:
1085                 wl3501_start_confirm_interrupt(dev, this, addr);
1086                 break;
1087         case WL3501_SIG_SCAN_CONFIRM:
1088                 wl3501_mgmt_scan_confirm(this, addr);
1089                 break;
1090         case WL3501_SIG_JOIN_CONFIRM:
1091                 wl3501_mgmt_join_confirm(dev, addr);
1092                 break;
1093         case WL3501_SIG_ASSOC_CONFIRM:
1094                 wl3501_assoc_confirm_interrupt(dev, addr);
1095                 break;
1096         case WL3501_SIG_AUTH_CONFIRM:
1097                 wl3501_auth_confirm_interrupt(this, addr);
1098                 break;
1099         case WL3501_SIG_RESYNC_CONFIRM:
1100                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1101                 break;
1102         }
1103         wl3501_esbq_confirm_done(this);
1104         morepkts = 1;
1105         /* free request if necessary */
1106 free:
1107         wl3501_esbq_req_free(this);
1108         if (morepkts)
1109                 goto loop;
1110 }
1111
1112 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1113 {
1114         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1115 }
1116
1117 /**
1118  * wl3501_interrupt - Hardware interrupt from card.
1119  * @irq: Interrupt number
1120  * @dev_id: net_device
1121  *
1122  * We must acknowledge the interrupt as soon as possible, and block the
1123  * interrupt from the same card immediately to prevent re-entry.
1124  *
1125  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1126  * On the other hand, to prevent SUTRO from malfunctioning, we must
1127  * unlock the SUTRO as soon as possible.
1128  */
1129 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1130 {
1131         struct net_device *dev = dev_id;
1132         struct wl3501_card *this;
1133
1134         this = netdev_priv(dev);
1135         spin_lock(&this->lock);
1136         wl3501_ack_interrupt(this);
1137         wl3501_block_interrupt(this);
1138         wl3501_rx_interrupt(dev);
1139         wl3501_unblock_interrupt(this);
1140         spin_unlock(&this->lock);
1141
1142         return IRQ_HANDLED;
1143 }
1144
1145 static int wl3501_reset_board(struct wl3501_card *this)
1146 {
1147         u8 tmp = 0;
1148         int i, rc = 0;
1149
1150         /* Coreset */
1151         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1152         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1153         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1154
1155         /* Reset SRAM 0x480 to zero */
1156         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1157
1158         /* Start up */
1159         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1160
1161         WL3501_NOPLOOP(1024 * 50);
1162
1163         wl3501_unblock_interrupt(this); /* acme: was commented */
1164
1165         /* Polling Self_Test_Status */
1166         for (i = 0; i < 10000; i++) {
1167                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1168
1169                 if (tmp == 'W') {
1170                         /* firmware complete all test successfully */
1171                         tmp = 'A';
1172                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1173                         goto out;
1174                 }
1175                 WL3501_NOPLOOP(10);
1176         }
1177         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1178         rc = -ENODEV;
1179 out:
1180         return rc;
1181 }
1182
1183 static int wl3501_init_firmware(struct wl3501_card *this)
1184 {
1185         u16 ptr, next;
1186         int rc = wl3501_reset_board(this);
1187
1188         if (rc)
1189                 goto fail;
1190         this->card_name[0] = '\0';
1191         wl3501_get_from_wla(this, 0x1a00,
1192                             this->card_name, sizeof(this->card_name));
1193         this->card_name[sizeof(this->card_name) - 1] = '\0';
1194         this->firmware_date[0] = '\0';
1195         wl3501_get_from_wla(this, 0x1a40,
1196                             this->firmware_date, sizeof(this->firmware_date));
1197         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1198         /* Switch to SRAM Page 0 */
1199         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1200         /* Read parameter from card */
1201         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1202         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1203         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1204         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1205         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1206         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1207         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1208         this->esbq_req_end     += this->esbq_req_start;
1209         this->esbq_confirm      = this->esbq_confirm_start;
1210         this->esbq_confirm_end += this->esbq_confirm_start;
1211         /* Initial Tx Buffer */
1212         this->tx_buffer_cnt = 1;
1213         ptr = this->tx_buffer_head;
1214         next = ptr + WL3501_BLKSZ;
1215         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1216                 this->tx_buffer_cnt++;
1217                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1218                 ptr = next;
1219                 next = ptr + WL3501_BLKSZ;
1220         }
1221         rc = 0;
1222         next = 0;
1223         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1224         this->tx_buffer_tail = ptr;
1225 out:
1226         return rc;
1227 fail:
1228         printk(KERN_WARNING "%s: failed!\n", __func__);
1229         goto out;
1230 }
1231
1232 static int wl3501_close(struct net_device *dev)
1233 {
1234         struct wl3501_card *this = netdev_priv(dev);
1235         unsigned long flags;
1236         struct pcmcia_device *link;
1237         link = this->p_dev;
1238
1239         spin_lock_irqsave(&this->lock, flags);
1240         link->open--;
1241
1242         /* Stop wl3501_hard_start_xmit() from now on */
1243         netif_stop_queue(dev);
1244         wl3501_ack_interrupt(this);
1245
1246         /* Mask interrupts from the SUTRO */
1247         wl3501_block_interrupt(this);
1248
1249         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1250         spin_unlock_irqrestore(&this->lock, flags);
1251         return 0;
1252 }
1253
1254 /**
1255  * wl3501_reset - Reset the SUTRO.
1256  * @dev: network device
1257  *
1258  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1259  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1260  * is running. It seems to be dangerous.
1261  */
1262 static int wl3501_reset(struct net_device *dev)
1263 {
1264         struct wl3501_card *this = netdev_priv(dev);
1265         int rc = -ENODEV;
1266         unsigned long flags;
1267
1268         spin_lock_irqsave(&this->lock, flags);
1269         wl3501_block_interrupt(this);
1270
1271         if (wl3501_init_firmware(this)) {
1272                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1273                        dev->name);
1274                 /* Free IRQ, and mark IRQ as unused */
1275                 free_irq(dev->irq, dev);
1276                 goto out;
1277         }
1278
1279         /*
1280          * Queue has to be started only when the Card is Started
1281          */
1282         netif_stop_queue(dev);
1283         this->adhoc_times = 0;
1284         wl3501_ack_interrupt(this);
1285         wl3501_unblock_interrupt(this);
1286         wl3501_mgmt_scan(this, 100);
1287         pr_debug("%s: device reset", dev->name);
1288         rc = 0;
1289 out:
1290         spin_unlock_irqrestore(&this->lock, flags);
1291         return rc;
1292 }
1293
1294 static void wl3501_tx_timeout(struct net_device *dev, unsigned int txqueue)
1295 {
1296         struct net_device_stats *stats = &dev->stats;
1297         int rc;
1298
1299         stats->tx_errors++;
1300         rc = wl3501_reset(dev);
1301         if (rc)
1302                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1303                        dev->name, rc);
1304         else {
1305                 netif_trans_update(dev); /* prevent tx timeout */
1306                 netif_wake_queue(dev);
1307         }
1308 }
1309
1310 /*
1311  * Return : 0 - OK
1312  *          1 - Could not transmit (dev_queue_xmit will queue it)
1313  *              and try to sent it later
1314  */
1315 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1316                                                 struct net_device *dev)
1317 {
1318         int enabled, rc;
1319         struct wl3501_card *this = netdev_priv(dev);
1320         unsigned long flags;
1321
1322         spin_lock_irqsave(&this->lock, flags);
1323         enabled = wl3501_block_interrupt(this);
1324         rc = wl3501_send_pkt(this, skb->data, skb->len);
1325         if (enabled)
1326                 wl3501_unblock_interrupt(this);
1327         if (rc) {
1328                 ++dev->stats.tx_dropped;
1329                 netif_stop_queue(dev);
1330         } else {
1331                 ++dev->stats.tx_packets;
1332                 dev->stats.tx_bytes += skb->len;
1333                 kfree_skb(skb);
1334
1335                 if (this->tx_buffer_cnt < 2)
1336                         netif_stop_queue(dev);
1337         }
1338         spin_unlock_irqrestore(&this->lock, flags);
1339         return NETDEV_TX_OK;
1340 }
1341
1342 static int wl3501_open(struct net_device *dev)
1343 {
1344         int rc = -ENODEV;
1345         struct wl3501_card *this = netdev_priv(dev);
1346         unsigned long flags;
1347         struct pcmcia_device *link;
1348         link = this->p_dev;
1349
1350         spin_lock_irqsave(&this->lock, flags);
1351         if (!pcmcia_dev_present(link))
1352                 goto out;
1353         netif_device_attach(dev);
1354         link->open++;
1355
1356         /* Initial WL3501 firmware */
1357         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1358         if (wl3501_init_firmware(this))
1359                 goto fail;
1360         /* Initial device variables */
1361         this->adhoc_times = 0;
1362         /* Acknowledge Interrupt, for cleaning last state */
1363         wl3501_ack_interrupt(this);
1364
1365         /* Enable interrupt from card after all */
1366         wl3501_unblock_interrupt(this);
1367         wl3501_mgmt_scan(this, 100);
1368         rc = 0;
1369         pr_debug("%s: WL3501 opened", dev->name);
1370         printk(KERN_INFO "%s: Card Name: %s\n"
1371                          "%s: Firmware Date: %s\n",
1372                          dev->name, this->card_name,
1373                          dev->name, this->firmware_date);
1374 out:
1375         spin_unlock_irqrestore(&this->lock, flags);
1376         return rc;
1377 fail:
1378         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1379         goto out;
1380 }
1381
1382 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1383 {
1384         struct wl3501_card *this = netdev_priv(dev);
1385         struct iw_statistics *wstats = &this->wstats;
1386         u32 value; /* size checked: it is u32 */
1387
1388         memset(wstats, 0, sizeof(*wstats));
1389         wstats->status = netif_running(dev);
1390         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1391                                   &value, sizeof(value)))
1392                 wstats->discard.code += value;
1393         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1394                                   &value, sizeof(value)))
1395                 wstats->discard.code += value;
1396         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1397                                   &value, sizeof(value)))
1398                 wstats->discard.code += value;
1399         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1400                                   &value, sizeof(value)))
1401                 wstats->discard.retries = value;
1402         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1403                                   &value, sizeof(value)))
1404                 wstats->discard.misc += value;
1405         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1406                                   &value, sizeof(value)))
1407                 wstats->discard.misc += value;
1408         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1409                                   &value, sizeof(value)))
1410                 wstats->discard.misc += value;
1411         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1412                                   &value, sizeof(value)))
1413                 wstats->discard.misc += value;
1414         return wstats;
1415 }
1416
1417 /**
1418  * wl3501_detach - deletes a driver "instance"
1419  * @link: FILL_IN
1420  *
1421  * This deletes a driver "instance". The device is de-registered with Card
1422  * Services. If it has been released, all local data structures are freed.
1423  * Otherwise, the structures will be freed when the device is released.
1424  */
1425 static void wl3501_detach(struct pcmcia_device *link)
1426 {
1427         struct net_device *dev = link->priv;
1428
1429         /* If the device is currently configured and active, we won't actually
1430          * delete it yet.  Instead, it is marked so that when the release()
1431          * function is called, that will trigger a proper detach(). */
1432
1433         while (link->open > 0)
1434                 wl3501_close(dev);
1435
1436         netif_device_detach(dev);
1437         wl3501_release(link);
1438
1439         unregister_netdev(dev);
1440         free_netdev(dev);
1441 }
1442
1443 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1444                            union iwreq_data *wrqu, char *extra)
1445 {
1446         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1447         return 0;
1448 }
1449
1450 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1451                            union iwreq_data *wrqu, char *extra)
1452 {
1453         struct wl3501_card *this = netdev_priv(dev);
1454         int channel = wrqu->freq.m;
1455         int rc = -EINVAL;
1456
1457         if (iw_valid_channel(this->reg_domain, channel)) {
1458                 this->chan = channel;
1459                 rc = wl3501_reset(dev);
1460         }
1461         return rc;
1462 }
1463
1464 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1465                            union iwreq_data *wrqu, char *extra)
1466 {
1467         struct wl3501_card *this = netdev_priv(dev);
1468
1469         wrqu->freq.m = 100000 *
1470                 ieee80211_channel_to_frequency(this->chan, NL80211_BAND_2GHZ);
1471         wrqu->freq.e = 1;
1472         return 0;
1473 }
1474
1475 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1476                            union iwreq_data *wrqu, char *extra)
1477 {
1478         int rc = -EINVAL;
1479
1480         if (wrqu->mode == IW_MODE_INFRA ||
1481             wrqu->mode == IW_MODE_ADHOC ||
1482             wrqu->mode == IW_MODE_AUTO) {
1483                 struct wl3501_card *this = netdev_priv(dev);
1484
1485                 this->net_type = wrqu->mode;
1486                 rc = wl3501_reset(dev);
1487         }
1488         return rc;
1489 }
1490
1491 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1492                            union iwreq_data *wrqu, char *extra)
1493 {
1494         struct wl3501_card *this = netdev_priv(dev);
1495
1496         wrqu->mode = this->net_type;
1497         return 0;
1498 }
1499
1500 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1501                            union iwreq_data *wrqu, char *extra)
1502 {
1503         struct wl3501_card *this = netdev_priv(dev);
1504
1505         wrqu->sens.value = this->rssi;
1506         wrqu->sens.disabled = !wrqu->sens.value;
1507         wrqu->sens.fixed = 1;
1508         return 0;
1509 }
1510
1511 static int wl3501_get_range(struct net_device *dev,
1512                             struct iw_request_info *info,
1513                             union iwreq_data *wrqu, char *extra)
1514 {
1515         struct iw_range *range = (struct iw_range *)extra;
1516
1517         /* Set the length (very important for backward compatibility) */
1518         wrqu->data.length = sizeof(*range);
1519
1520         /* Set all the info we don't care or don't know about to zero */
1521         memset(range, 0, sizeof(*range));
1522
1523         /* Set the Wireless Extension versions */
1524         range->we_version_compiled      = WIRELESS_EXT;
1525         range->we_version_source        = 1;
1526         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1527         /* FIXME: study the code to fill in more fields... */
1528         return 0;
1529 }
1530
1531 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1532                           union iwreq_data *wrqu, char *extra)
1533 {
1534         struct wl3501_card *this = netdev_priv(dev);
1535         int rc = -EINVAL;
1536
1537         /* FIXME: we support other ARPHRDs...*/
1538         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1539                 goto out;
1540         if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
1541                 /* FIXME: rescan? */
1542         } else
1543                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1544                 /* FIXME: rescan? deassoc & scan? */
1545         rc = 0;
1546 out:
1547         return rc;
1548 }
1549
1550 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1551                           union iwreq_data *wrqu, char *extra)
1552 {
1553         struct wl3501_card *this = netdev_priv(dev);
1554
1555         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1556         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1557         return 0;
1558 }
1559
1560 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1561                            union iwreq_data *wrqu, char *extra)
1562 {
1563         /*
1564          * FIXME: trigger scanning with a reset, yes, I'm lazy
1565          */
1566         return wl3501_reset(dev);
1567 }
1568
1569 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1570                            union iwreq_data *wrqu, char *extra)
1571 {
1572         struct wl3501_card *this = netdev_priv(dev);
1573         int i;
1574         char *current_ev = extra;
1575         struct iw_event iwe;
1576
1577         for (i = 0; i < this->bss_cnt; ++i) {
1578                 iwe.cmd                 = SIOCGIWAP;
1579                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1580                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].req.bssid, ETH_ALEN);
1581                 current_ev = iwe_stream_add_event(info, current_ev,
1582                                                   extra + IW_SCAN_MAX_DATA,
1583                                                   &iwe, IW_EV_ADDR_LEN);
1584                 iwe.cmd           = SIOCGIWESSID;
1585                 iwe.u.data.flags  = 1;
1586                 iwe.u.data.length = this->bss_set[i].req.ssid.el.len;
1587                 current_ev = iwe_stream_add_point(info, current_ev,
1588                                                   extra + IW_SCAN_MAX_DATA,
1589                                                   &iwe,
1590                                                   this->bss_set[i].req.ssid.essid);
1591                 iwe.cmd    = SIOCGIWMODE;
1592                 iwe.u.mode = this->bss_set[i].req.bss_type;
1593                 current_ev = iwe_stream_add_event(info, current_ev,
1594                                                   extra + IW_SCAN_MAX_DATA,
1595                                                   &iwe, IW_EV_UINT_LEN);
1596                 iwe.cmd = SIOCGIWFREQ;
1597                 iwe.u.freq.m = this->bss_set[i].req.ds_pset.chan;
1598                 iwe.u.freq.e = 0;
1599                 current_ev = iwe_stream_add_event(info, current_ev,
1600                                                   extra + IW_SCAN_MAX_DATA,
1601                                                   &iwe, IW_EV_FREQ_LEN);
1602                 iwe.cmd = SIOCGIWENCODE;
1603                 if (this->bss_set[i].req.cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1604                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1605                 else
1606                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1607                 iwe.u.data.length = 0;
1608                 current_ev = iwe_stream_add_point(info, current_ev,
1609                                                   extra + IW_SCAN_MAX_DATA,
1610                                                   &iwe, NULL);
1611         }
1612         /* Length of data */
1613         wrqu->data.length = (current_ev - extra);
1614         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1615         return 0;
1616 }
1617
1618 static int wl3501_set_essid(struct net_device *dev,
1619                             struct iw_request_info *info,
1620                             union iwreq_data *wrqu, char *extra)
1621 {
1622         struct wl3501_card *this = netdev_priv(dev);
1623
1624         if (wrqu->data.flags) {
1625                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1626                                          &this->essid.el,
1627                                          extra, wrqu->data.length);
1628         } else { /* We accept any ESSID */
1629                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1630                                          &this->essid.el, "ANY", 3);
1631         }
1632         return wl3501_reset(dev);
1633 }
1634
1635 static int wl3501_get_essid(struct net_device *dev,
1636                             struct iw_request_info *info,
1637                             union iwreq_data *wrqu, char *extra)
1638 {
1639         struct wl3501_card *this = netdev_priv(dev);
1640         unsigned long flags;
1641
1642         spin_lock_irqsave(&this->lock, flags);
1643         wrqu->essid.flags  = 1;
1644         wrqu->essid.length = this->essid.el.len;
1645         memcpy(extra, this->essid.essid, this->essid.el.len);
1646         spin_unlock_irqrestore(&this->lock, flags);
1647         return 0;
1648 }
1649
1650 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1651                            union iwreq_data *wrqu, char *extra)
1652 {
1653         struct wl3501_card *this = netdev_priv(dev);
1654
1655         if (wrqu->data.length > sizeof(this->nick))
1656                 return -E2BIG;
1657         strlcpy(this->nick, extra, wrqu->data.length);
1658         return 0;
1659 }
1660
1661 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1662                            union iwreq_data *wrqu, char *extra)
1663 {
1664         struct wl3501_card *this = netdev_priv(dev);
1665
1666         strlcpy(extra, this->nick, 32);
1667         wrqu->data.length = strlen(extra);
1668         return 0;
1669 }
1670
1671 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1672                            union iwreq_data *wrqu, char *extra)
1673 {
1674         /*
1675          * FIXME: have to see from where to get this info, perhaps this card
1676          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1677          * common with the Planet Access Points. -acme
1678          */
1679         wrqu->bitrate.value = 2000000;
1680         wrqu->bitrate.fixed = 1;
1681         return 0;
1682 }
1683
1684 static int wl3501_get_rts_threshold(struct net_device *dev,
1685                                     struct iw_request_info *info,
1686                                     union iwreq_data *wrqu, char *extra)
1687 {
1688         u16 threshold; /* size checked: it is u16 */
1689         struct wl3501_card *this = netdev_priv(dev);
1690         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1691                                       &threshold, sizeof(threshold));
1692         if (!rc) {
1693                 wrqu->rts.value = threshold;
1694                 wrqu->rts.disabled = threshold >= 2347;
1695                 wrqu->rts.fixed = 1;
1696         }
1697         return rc;
1698 }
1699
1700 static int wl3501_get_frag_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_FRAG_THRESHOLD,
1707                                       &threshold, sizeof(threshold));
1708         if (!rc) {
1709                 wrqu->frag.value = threshold;
1710                 wrqu->frag.disabled = threshold >= 2346;
1711                 wrqu->frag.fixed = 1;
1712         }
1713         return rc;
1714 }
1715
1716 static int wl3501_get_txpow(struct net_device *dev,
1717                             struct iw_request_info *info,
1718                             union iwreq_data *wrqu, char *extra)
1719 {
1720         u16 txpow;
1721         struct wl3501_card *this = netdev_priv(dev);
1722         int rc = wl3501_get_mib_value(this,
1723                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1724                                       &txpow, sizeof(txpow));
1725         if (!rc) {
1726                 wrqu->txpower.value = txpow;
1727                 wrqu->txpower.disabled = 0;
1728                 /*
1729                  * From the MIB values I think this can be configurable,
1730                  * as it lists several tx power levels -acme
1731                  */
1732                 wrqu->txpower.fixed = 0;
1733                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1734         }
1735         return rc;
1736 }
1737
1738 static int wl3501_get_retry(struct net_device *dev,
1739                             struct iw_request_info *info,
1740                             union iwreq_data *wrqu, char *extra)
1741 {
1742         u8 retry; /* size checked: it is u8 */
1743         struct wl3501_card *this = netdev_priv(dev);
1744         int rc = wl3501_get_mib_value(this,
1745                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1746                                       &retry, sizeof(retry));
1747         if (rc)
1748                 goto out;
1749         if (wrqu->retry.flags & IW_RETRY_LONG) {
1750                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1751                 goto set_value;
1752         }
1753         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1754                                   &retry, sizeof(retry));
1755         if (rc)
1756                 goto out;
1757         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1758 set_value:
1759         wrqu->retry.value = retry;
1760         wrqu->retry.disabled = 0;
1761 out:
1762         return rc;
1763 }
1764
1765 static int wl3501_get_encode(struct net_device *dev,
1766                              struct iw_request_info *info,
1767                              union iwreq_data *wrqu, char *extra)
1768 {
1769         u8 implemented, restricted, keys[100], len_keys, tocopy;
1770         struct wl3501_card *this = netdev_priv(dev);
1771         int rc = wl3501_get_mib_value(this,
1772                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1773                                       &implemented, sizeof(implemented));
1774         if (rc)
1775                 goto out;
1776         if (!implemented) {
1777                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1778                 goto out;
1779         }
1780         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1781                                   &restricted, sizeof(restricted));
1782         if (rc)
1783                 goto out;
1784         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1785                                             IW_ENCODE_OPEN;
1786         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1787                                   &len_keys, sizeof(len_keys));
1788         if (rc)
1789                 goto out;
1790         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1791                                   keys, len_keys);
1792         if (rc)
1793                 goto out;
1794         tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1795         tocopy = min_t(u8, tocopy, 100);
1796         wrqu->encoding.length = tocopy;
1797         memcpy(extra, keys, tocopy);
1798 out:
1799         return rc;
1800 }
1801
1802 static int wl3501_get_power(struct net_device *dev,
1803                             struct iw_request_info *info,
1804                             union iwreq_data *wrqu, char *extra)
1805 {
1806         u8 pwr_state;
1807         struct wl3501_card *this = netdev_priv(dev);
1808         int rc = wl3501_get_mib_value(this,
1809                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1810                                       &pwr_state, sizeof(pwr_state));
1811         if (rc)
1812                 goto out;
1813         wrqu->power.disabled = !pwr_state;
1814         wrqu->power.flags = IW_POWER_ON;
1815 out:
1816         return rc;
1817 }
1818
1819 static const iw_handler wl3501_handler[] = {
1820         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1821         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1822         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1823         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1824         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1825         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1826         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1827         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1828         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1829         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1830         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1831         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1832         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1833         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1834         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1835         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1836         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1837         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1838         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1839         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1840         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1841         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1842         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1843         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1844         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1845         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1846 };
1847
1848 static const struct iw_handler_def wl3501_handler_def = {
1849         .num_standard   = ARRAY_SIZE(wl3501_handler),
1850         .standard       = (iw_handler *)wl3501_handler,
1851         .get_wireless_stats = wl3501_get_wireless_stats,
1852 };
1853
1854 static const struct net_device_ops wl3501_netdev_ops = {
1855         .ndo_open               = wl3501_open,
1856         .ndo_stop               = wl3501_close,
1857         .ndo_start_xmit         = wl3501_hard_start_xmit,
1858         .ndo_tx_timeout         = wl3501_tx_timeout,
1859         .ndo_set_mac_address    = eth_mac_addr,
1860         .ndo_validate_addr      = eth_validate_addr,
1861 };
1862
1863 static int wl3501_probe(struct pcmcia_device *p_dev)
1864 {
1865         struct net_device *dev;
1866         struct wl3501_card *this;
1867
1868         /* The io structure describes IO port mapping */
1869         p_dev->resource[0]->end = 16;
1870         p_dev->resource[0]->flags       = IO_DATA_PATH_WIDTH_8;
1871
1872         /* General socket configuration */
1873         p_dev->config_flags     = CONF_ENABLE_IRQ;
1874         p_dev->config_index     = 1;
1875
1876         dev = alloc_etherdev(sizeof(struct wl3501_card));
1877         if (!dev)
1878                 goto out_link;
1879
1880
1881         dev->netdev_ops         = &wl3501_netdev_ops;
1882         dev->watchdog_timeo     = 5 * HZ;
1883
1884         this = netdev_priv(dev);
1885         this->wireless_data.spy_data = &this->spy_data;
1886         this->p_dev = p_dev;
1887         dev->wireless_data      = &this->wireless_data;
1888         dev->wireless_handlers  = &wl3501_handler_def;
1889         netif_stop_queue(dev);
1890         p_dev->priv = dev;
1891
1892         return wl3501_config(p_dev);
1893 out_link:
1894         return -ENOMEM;
1895 }
1896
1897 static int wl3501_config(struct pcmcia_device *link)
1898 {
1899         struct net_device *dev = link->priv;
1900         int i = 0, j, ret;
1901         struct wl3501_card *this;
1902
1903         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1904          * want, you can also read the card's config table to pick addresses --
1905          * see the serial driver for an example. */
1906         link->io_lines = 5;
1907
1908         for (j = 0x280; j < 0x400; j += 0x20) {
1909                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1910                  * 0x200-0x2ff, and so on, because this seems safer */
1911                 link->resource[0]->start = j;
1912                 link->resource[1]->start = link->resource[0]->start + 0x10;
1913                 i = pcmcia_request_io(link);
1914                 if (i == 0)
1915                         break;
1916         }
1917         if (i != 0)
1918                 goto failed;
1919
1920         /* Now allocate an interrupt line. Note that this does not actually
1921          * assign a handler to the interrupt. */
1922
1923         ret = pcmcia_request_irq(link, wl3501_interrupt);
1924         if (ret)
1925                 goto failed;
1926
1927         ret = pcmcia_enable_device(link);
1928         if (ret)
1929                 goto failed;
1930
1931         dev->irq = link->irq;
1932         dev->base_addr = link->resource[0]->start;
1933         SET_NETDEV_DEV(dev, &link->dev);
1934         if (register_netdev(dev)) {
1935                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1936                 goto failed;
1937         }
1938
1939         this = netdev_priv(dev);
1940
1941         this->base_addr = dev->base_addr;
1942
1943         if (!wl3501_get_flash_mac_addr(this)) {
1944                 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1945                        dev->name);
1946                 unregister_netdev(dev);
1947                 goto failed;
1948         }
1949
1950         for (i = 0; i < 6; i++)
1951                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1952
1953         /* print probe information */
1954         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1955                "MAC addr in flash ROM:%pM\n",
1956                dev->name, this->base_addr, (int)dev->irq,
1957                dev->dev_addr);
1958         /*
1959          * Initialize card parameters - added by jss
1960          */
1961         this->net_type          = IW_MODE_INFRA;
1962         this->bss_cnt           = 0;
1963         this->join_sta_bss      = 0;
1964         this->adhoc_times       = 0;
1965         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1966                                  "ANY", 3);
1967         this->card_name[0]      = '\0';
1968         this->firmware_date[0]  = '\0';
1969         this->rssi              = 255;
1970         this->chan              = iw_default_channel(this->reg_domain);
1971         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1972         spin_lock_init(&this->lock);
1973         init_waitqueue_head(&this->wait);
1974         netif_start_queue(dev);
1975         return 0;
1976
1977 failed:
1978         wl3501_release(link);
1979         return -ENODEV;
1980 }
1981
1982 static void wl3501_release(struct pcmcia_device *link)
1983 {
1984         pcmcia_disable_device(link);
1985 }
1986
1987 static int wl3501_suspend(struct pcmcia_device *link)
1988 {
1989         struct net_device *dev = link->priv;
1990
1991         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1992         if (link->open)
1993                 netif_device_detach(dev);
1994
1995         return 0;
1996 }
1997
1998 static int wl3501_resume(struct pcmcia_device *link)
1999 {
2000         struct net_device *dev = link->priv;
2001
2002         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2003         if (link->open) {
2004                 wl3501_reset(dev);
2005                 netif_device_attach(dev);
2006         }
2007
2008         return 0;
2009 }
2010
2011
2012 static const struct pcmcia_device_id wl3501_ids[] = {
2013         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2014         PCMCIA_DEVICE_NULL
2015 };
2016 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2017
2018 static struct pcmcia_driver wl3501_driver = {
2019         .owner          = THIS_MODULE,
2020         .name           = "wl3501_cs",
2021         .probe          = wl3501_probe,
2022         .remove         = wl3501_detach,
2023         .id_table       = wl3501_ids,
2024         .suspend        = wl3501_suspend,
2025         .resume         = wl3501_resume,
2026 };
2027 module_pcmcia_driver(wl3501_driver);
2028
2029 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2030               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2031               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2032 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2033 MODULE_LICENSE("GPL");