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_domain: 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  * @data: Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 462  *                                   data[6] - data[11] is Src MAC Addr)
 463  * @len: Packet length
 464  * Ref: IEEE 802.11
 465  */
 466 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 467 {
 468         u16 bf, sig_bf, next, tmplen, pktlen;
 469         struct wl3501_md_req sig = {
 470                 .sig_id = WL3501_SIG_MD_REQ,
 471         };
 472         u8 *pdata = (char *)data;
 473         int rc = -EIO;
 474
 475         if (wl3501_esbq_req_test(this)) {
 476                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 477                 rc = -ENOMEM;
 478                 if (!sig_bf)    /* No free buffer available */
 479                         goto out;
 480                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 481                 if (!bf) {
 482                         /* No free buffer available */
 483                         wl3501_free_tx_buffer(this, sig_bf);
 484                         goto out;
 485                 }
 486                 rc = 0;
 487                 memcpy(&sig.daddr[0], pdata, 12);
 488                 pktlen = len - 12;
 489                 pdata += 12;
 490                 sig.data = bf;
 491                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 492                         u8 addr4[ETH_ALEN] = {
 493                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 494                         };
 495
 496                         wl3501_set_to_wla(this, bf + 2 +
 497                                           offsetof(struct wl3501_tx_hdr, addr4),
 498                                           addr4, sizeof(addr4));
 499                         sig.size = pktlen + 24 + 4 + 6;
 500                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 501                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 502                                 pktlen -= tmplen;
 503                         } else {
 504                                 tmplen = pktlen;
 505                                 pktlen = 0;
 506                         }
 507                         wl3501_set_to_wla(this,
 508                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 509                                           pdata, tmplen);
 510                         pdata += tmplen;
 511                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 512                         bf = next;
 513                 } else {
 514                         sig.size = pktlen + 24 + 4 - 2;
 515                         pdata += 2;
 516                         pktlen -= 2;
 517                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 518                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 519                                 pktlen -= tmplen;
 520                         } else {
 521                                 tmplen = pktlen;
 522                                 pktlen = 0;
 523                         }
 524                         wl3501_set_to_wla(this, bf + 2 +
 525                                           offsetof(struct wl3501_tx_hdr, addr4),
 526                                           pdata, tmplen);
 527                         pdata += tmplen;
 528                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 529                         bf = next;
 530                 }
 531                 while (pktlen > 0) {
 532                         if (pktlen > 254) {
 533                                 tmplen = 254;
 534                                 pktlen -= 254;
 535                         } else {
 536                                 tmplen = pktlen;
 537                                 pktlen = 0;
 538                         }
 539                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 540                         pdata += tmplen;
 541                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 542                         bf = next;
 543                 }
 544                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 545                 wl3501_esbq_req(this, &sig_bf);
 546         }
 547 out:
 548         return rc;
 549 }
 550
 551 static int wl3501_mgmt_resync(struct wl3501_card *this)
 552 {
 553         struct wl3501_resync_req sig = {
 554                 .sig_id = WL3501_SIG_RESYNC_REQ,
 555         };
 556
 557         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 558 }
 559
 560 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 561 {
 562         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 563                                                  WL3501_NET_TYPE_ADHOC;
 564 }
 565
 566 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 567 {
 568         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 569                                                  WL3501_MGMT_CAPABILITY_IBSS;
 570 }
 571
 572 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 573 {
 574         struct wl3501_scan_req sig = {
 575                 .sig_id         = WL3501_SIG_SCAN_REQ,
 576                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 577                 .probe_delay    = 0x10,
 578                 .min_chan_time  = chan_time,
 579                 .max_chan_time  = chan_time,
 580                 .bss_type       = wl3501_fw_bss_type(this),
 581         };
 582
 583         this->bss_cnt = this->join_sta_bss = 0;
 584         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 585 }
 586
 587 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 588 {
 589         struct wl3501_join_req sig = {
 590                 .sig_id           = WL3501_SIG_JOIN_REQ,
 591                 .timeout          = 10,
 592                 .ds_pset = {
 593                         .el = {
 594                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 595                                 .len = 1,
 596                         },
 597                         .chan   = this->chan,
 598                 },
 599         };
 600
 601         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 602         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 603 }
 604
 605 static int wl3501_mgmt_start(struct wl3501_card *this)
 606 {
 607         struct wl3501_start_req sig = {
 608                 .sig_id                 = WL3501_SIG_START_REQ,
 609                 .beacon_period          = 400,
 610                 .dtim_period            = 1,
 611                 .ds_pset = {
 612                         .el = {
 613                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 614                                 .len = 1,
 615                         },
 616                         .chan   = this->chan,
 617                 },
 618                 .bss_basic_rset = {
 619                         .el = {
 620                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 621                                 .len = 2,
 622                         },
 623                         .data_rate_labels = {
 624                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 625                                       IW_MGMT_RATE_LABEL_1MBIT,
 626                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 627                                       IW_MGMT_RATE_LABEL_2MBIT,
 628                         },
 629                 },
 630                 .operational_rset       = {
 631                         .el = {
 632                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 633                                 .len = 2,
 634                         },
 635                         .data_rate_labels = {
 636                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 637                                       IW_MGMT_RATE_LABEL_1MBIT,
 638                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 639                                       IW_MGMT_RATE_LABEL_2MBIT,
 640                         },
 641                 },
 642                 .ibss_pset              = {
 643                         .el = {
 644                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 645                                 .len     = 2,
 646                         },
 647                         .atim_window = 10,
 648                 },
 649                 .bss_type               = wl3501_fw_bss_type(this),
 650                 .cap_info               = wl3501_fw_cap_info(this),
 651         };
 652
 653         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 654         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 655         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 656 }
 657
 658 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 659 {
 660         u16 i = 0;
 661         int matchflag = 0;
 662         struct wl3501_scan_confirm sig;
 663
 664         pr_debug("entry");
 665         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 666         if (sig.status == WL3501_STATUS_SUCCESS) {
 667                 pr_debug("success");
 668                 if ((this->net_type == IW_MODE_INFRA &&
 669                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 670                     (this->net_type == IW_MODE_ADHOC &&
 671                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 672                     this->net_type == IW_MODE_AUTO) {
 673                         if (!this->essid.el.len)
 674                                 matchflag = 1;
 675                         else if (this->essid.el.len == 3 &&
 676                                  !memcmp(this->essid.essid, "ANY", 3))
 677                                 matchflag = 1;
 678                         else if (this->essid.el.len != sig.ssid.el.len)
 679                                 matchflag = 0;
 680                         else if (memcmp(this->essid.essid, sig.ssid.essid,
 681                                         this->essid.el.len))
 682                                 matchflag = 0;
 683                         else
 684                                 matchflag = 1;
 685                         if (matchflag) {
 686                                 for (i = 0; i < this->bss_cnt; i++) {
 687                                         if (ether_addr_equal_unaligned(this->bss_set[i].bssid, sig.bssid)) {
 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 "Unsupported 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         unsigned long flags;
1230         struct pcmcia_device *link;
1231         link = this->p_dev;
1232
1233         spin_lock_irqsave(&this->lock, flags);
1234         link->open--;
1235
1236         /* Stop wl3501_hard_start_xmit() from now on */
1237         netif_stop_queue(dev);
1238         wl3501_ack_interrupt(this);
1239
1240         /* Mask interrupts from the SUTRO */
1241         wl3501_block_interrupt(this);
1242
1243         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1244         spin_unlock_irqrestore(&this->lock, flags);
1245         return 0;
1246 }
1247
1248 /**
1249  * wl3501_reset - Reset the SUTRO.
1250  * @dev: network device
1251  *
1252  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1253  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1254  * is running. It seems to be dangerous.
1255  */
1256 static int wl3501_reset(struct net_device *dev)
1257 {
1258         struct wl3501_card *this = netdev_priv(dev);
1259         int rc = -ENODEV;
1260         unsigned long flags;
1261
1262         spin_lock_irqsave(&this->lock, flags);
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         spin_unlock_irqrestore(&this->lock, flags);
1285         return rc;
1286 }
1287
1288 static void wl3501_tx_timeout(struct net_device *dev, unsigned int txqueue)
1289 {
1290         struct net_device_stats *stats = &dev->stats;
1291         int rc;
1292
1293         stats->tx_errors++;
1294         rc = wl3501_reset(dev);
1295         if (rc)
1296                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1297                        dev->name, rc);
1298         else {
1299                 netif_trans_update(dev); /* prevent tx timeout */
1300                 netif_wake_queue(dev);
1301         }
1302 }
1303
1304 /*
1305  * Return : 0 - OK
1306  *          1 - Could not transmit (dev_queue_xmit will queue it)
1307  *              and try to sent it later
1308  */
1309 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1310                                                 struct net_device *dev)
1311 {
1312         int enabled, rc;
1313         struct wl3501_card *this = netdev_priv(dev);
1314         unsigned long flags;
1315
1316         spin_lock_irqsave(&this->lock, flags);
1317         enabled = wl3501_block_interrupt(this);
1318         rc = wl3501_send_pkt(this, skb->data, skb->len);
1319         if (enabled)
1320                 wl3501_unblock_interrupt(this);
1321         if (rc) {
1322                 ++dev->stats.tx_dropped;
1323                 netif_stop_queue(dev);
1324         } else {
1325                 ++dev->stats.tx_packets;
1326                 dev->stats.tx_bytes += skb->len;
1327                 kfree_skb(skb);
1328
1329                 if (this->tx_buffer_cnt < 2)
1330                         netif_stop_queue(dev);
1331         }
1332         spin_unlock_irqrestore(&this->lock, flags);
1333         return NETDEV_TX_OK;
1334 }
1335
1336 static int wl3501_open(struct net_device *dev)
1337 {
1338         int rc = -ENODEV;
1339         struct wl3501_card *this = netdev_priv(dev);
1340         unsigned long flags;
1341         struct pcmcia_device *link;
1342         link = this->p_dev;
1343
1344         spin_lock_irqsave(&this->lock, flags);
1345         if (!pcmcia_dev_present(link))
1346                 goto out;
1347         netif_device_attach(dev);
1348         link->open++;
1349
1350         /* Initial WL3501 firmware */
1351         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1352         if (wl3501_init_firmware(this))
1353                 goto fail;
1354         /* Initial device variables */
1355         this->adhoc_times = 0;
1356         /* Acknowledge Interrupt, for cleaning last state */
1357         wl3501_ack_interrupt(this);
1358
1359         /* Enable interrupt from card after all */
1360         wl3501_unblock_interrupt(this);
1361         wl3501_mgmt_scan(this, 100);
1362         rc = 0;
1363         pr_debug("%s: WL3501 opened", dev->name);
1364         printk(KERN_INFO "%s: Card Name: %s\n"
1365                          "%s: Firmware Date: %s\n",
1366                          dev->name, this->card_name,
1367                          dev->name, this->firmware_date);
1368 out:
1369         spin_unlock_irqrestore(&this->lock, flags);
1370         return rc;
1371 fail:
1372         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1373         goto out;
1374 }
1375
1376 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1377 {
1378         struct wl3501_card *this = netdev_priv(dev);
1379         struct iw_statistics *wstats = &this->wstats;
1380         u32 value; /* size checked: it is u32 */
1381
1382         memset(wstats, 0, sizeof(*wstats));
1383         wstats->status = netif_running(dev);
1384         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1385                                   &value, sizeof(value)))
1386                 wstats->discard.code += value;
1387         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1388                                   &value, sizeof(value)))
1389                 wstats->discard.code += value;
1390         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1391                                   &value, sizeof(value)))
1392                 wstats->discard.code += value;
1393         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1394                                   &value, sizeof(value)))
1395                 wstats->discard.retries = value;
1396         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1397                                   &value, sizeof(value)))
1398                 wstats->discard.misc += value;
1399         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1400                                   &value, sizeof(value)))
1401                 wstats->discard.misc += value;
1402         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1403                                   &value, sizeof(value)))
1404                 wstats->discard.misc += value;
1405         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1406                                   &value, sizeof(value)))
1407                 wstats->discard.misc += value;
1408         return wstats;
1409 }
1410
1411 /**
1412  * wl3501_detach - deletes a driver "instance"
1413  * @link: FILL_IN
1414  *
1415  * This deletes a driver "instance". The device is de-registered with Card
1416  * Services. If it has been released, all local data structures are freed.
1417  * Otherwise, the structures will be freed when the device is released.
1418  */
1419 static void wl3501_detach(struct pcmcia_device *link)
1420 {
1421         struct net_device *dev = link->priv;
1422
1423         /* If the device is currently configured and active, we won't actually
1424          * delete it yet.  Instead, it is marked so that when the release()
1425          * function is called, that will trigger a proper detach(). */
1426
1427         while (link->open > 0)
1428                 wl3501_close(dev);
1429
1430         netif_device_detach(dev);
1431         wl3501_release(link);
1432
1433         unregister_netdev(dev);
1434         free_netdev(dev);
1435 }
1436
1437 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1438                            union iwreq_data *wrqu, char *extra)
1439 {
1440         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1441         return 0;
1442 }
1443
1444 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1445                            union iwreq_data *wrqu, char *extra)
1446 {
1447         struct wl3501_card *this = netdev_priv(dev);
1448         int channel = wrqu->freq.m;
1449         int rc = -EINVAL;
1450
1451         if (iw_valid_channel(this->reg_domain, channel)) {
1452                 this->chan = channel;
1453                 rc = wl3501_reset(dev);
1454         }
1455         return rc;
1456 }
1457
1458 static int wl3501_get_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
1463         wrqu->freq.m = 100000 *
1464                 ieee80211_channel_to_frequency(this->chan, NL80211_BAND_2GHZ);
1465         wrqu->freq.e = 1;
1466         return 0;
1467 }
1468
1469 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1470                            union iwreq_data *wrqu, char *extra)
1471 {
1472         int rc = -EINVAL;
1473
1474         if (wrqu->mode == IW_MODE_INFRA ||
1475             wrqu->mode == IW_MODE_ADHOC ||
1476             wrqu->mode == IW_MODE_AUTO) {
1477                 struct wl3501_card *this = netdev_priv(dev);
1478
1479                 this->net_type = wrqu->mode;
1480                 rc = wl3501_reset(dev);
1481         }
1482         return rc;
1483 }
1484
1485 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1486                            union iwreq_data *wrqu, char *extra)
1487 {
1488         struct wl3501_card *this = netdev_priv(dev);
1489
1490         wrqu->mode = this->net_type;
1491         return 0;
1492 }
1493
1494 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1495                            union iwreq_data *wrqu, char *extra)
1496 {
1497         struct wl3501_card *this = netdev_priv(dev);
1498
1499         wrqu->sens.value = this->rssi;
1500         wrqu->sens.disabled = !wrqu->sens.value;
1501         wrqu->sens.fixed = 1;
1502         return 0;
1503 }
1504
1505 static int wl3501_get_range(struct net_device *dev,
1506                             struct iw_request_info *info,
1507                             union iwreq_data *wrqu, char *extra)
1508 {
1509         struct iw_range *range = (struct iw_range *)extra;
1510
1511         /* Set the length (very important for backward compatibility) */
1512         wrqu->data.length = sizeof(*range);
1513
1514         /* Set all the info we don't care or don't know about to zero */
1515         memset(range, 0, sizeof(*range));
1516
1517         /* Set the Wireless Extension versions */
1518         range->we_version_compiled      = WIRELESS_EXT;
1519         range->we_version_source        = 1;
1520         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1521         /* FIXME: study the code to fill in more fields... */
1522         return 0;
1523 }
1524
1525 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1526                           union iwreq_data *wrqu, char *extra)
1527 {
1528         struct wl3501_card *this = netdev_priv(dev);
1529         int rc = -EINVAL;
1530
1531         /* FIXME: we support other ARPHRDs...*/
1532         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1533                 goto out;
1534         if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
1535                 /* FIXME: rescan? */
1536         } else
1537                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1538                 /* FIXME: rescan? deassoc & scan? */
1539         rc = 0;
1540 out:
1541         return rc;
1542 }
1543
1544 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1545                           union iwreq_data *wrqu, char *extra)
1546 {
1547         struct wl3501_card *this = netdev_priv(dev);
1548
1549         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1550         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1551         return 0;
1552 }
1553
1554 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1555                            union iwreq_data *wrqu, char *extra)
1556 {
1557         /*
1558          * FIXME: trigger scanning with a reset, yes, I'm lazy
1559          */
1560         return wl3501_reset(dev);
1561 }
1562
1563 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1564                            union iwreq_data *wrqu, char *extra)
1565 {
1566         struct wl3501_card *this = netdev_priv(dev);
1567         int i;
1568         char *current_ev = extra;
1569         struct iw_event iwe;
1570
1571         for (i = 0; i < this->bss_cnt; ++i) {
1572                 iwe.cmd                 = SIOCGIWAP;
1573                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1574                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1575                 current_ev = iwe_stream_add_event(info, current_ev,
1576                                                   extra + IW_SCAN_MAX_DATA,
1577                                                   &iwe, IW_EV_ADDR_LEN);
1578                 iwe.cmd           = SIOCGIWESSID;
1579                 iwe.u.data.flags  = 1;
1580                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1581                 current_ev = iwe_stream_add_point(info, current_ev,
1582                                                   extra + IW_SCAN_MAX_DATA,
1583                                                   &iwe,
1584                                                   this->bss_set[i].ssid.essid);
1585                 iwe.cmd    = SIOCGIWMODE;
1586                 iwe.u.mode = this->bss_set[i].bss_type;
1587                 current_ev = iwe_stream_add_event(info, current_ev,
1588                                                   extra + IW_SCAN_MAX_DATA,
1589                                                   &iwe, IW_EV_UINT_LEN);
1590                 iwe.cmd = SIOCGIWFREQ;
1591                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1592                 iwe.u.freq.e = 0;
1593                 current_ev = iwe_stream_add_event(info, current_ev,
1594                                                   extra + IW_SCAN_MAX_DATA,
1595                                                   &iwe, IW_EV_FREQ_LEN);
1596                 iwe.cmd = SIOCGIWENCODE;
1597                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1598                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1599                 else
1600                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1601                 iwe.u.data.length = 0;
1602                 current_ev = iwe_stream_add_point(info, current_ev,
1603                                                   extra + IW_SCAN_MAX_DATA,
1604                                                   &iwe, NULL);
1605         }
1606         /* Length of data */
1607         wrqu->data.length = (current_ev - extra);
1608         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1609         return 0;
1610 }
1611
1612 static int wl3501_set_essid(struct net_device *dev,
1613                             struct iw_request_info *info,
1614                             union iwreq_data *wrqu, char *extra)
1615 {
1616         struct wl3501_card *this = netdev_priv(dev);
1617
1618         if (wrqu->data.flags) {
1619                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1620                                          &this->essid.el,
1621                                          extra, wrqu->data.length);
1622         } else { /* We accept any ESSID */
1623                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1624                                          &this->essid.el, "ANY", 3);
1625         }
1626         return wl3501_reset(dev);
1627 }
1628
1629 static int wl3501_get_essid(struct net_device *dev,
1630                             struct iw_request_info *info,
1631                             union iwreq_data *wrqu, char *extra)
1632 {
1633         struct wl3501_card *this = netdev_priv(dev);
1634         unsigned long flags;
1635
1636         spin_lock_irqsave(&this->lock, flags);
1637         wrqu->essid.flags  = 1;
1638         wrqu->essid.length = this->essid.el.len;
1639         memcpy(extra, this->essid.essid, this->essid.el.len);
1640         spin_unlock_irqrestore(&this->lock, flags);
1641         return 0;
1642 }
1643
1644 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1645                            union iwreq_data *wrqu, char *extra)
1646 {
1647         struct wl3501_card *this = netdev_priv(dev);
1648
1649         if (wrqu->data.length > sizeof(this->nick))
1650                 return -E2BIG;
1651         strlcpy(this->nick, extra, wrqu->data.length);
1652         return 0;
1653 }
1654
1655 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1656                            union iwreq_data *wrqu, char *extra)
1657 {
1658         struct wl3501_card *this = netdev_priv(dev);
1659
1660         strlcpy(extra, this->nick, 32);
1661         wrqu->data.length = strlen(extra);
1662         return 0;
1663 }
1664
1665 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1666                            union iwreq_data *wrqu, char *extra)
1667 {
1668         /*
1669          * FIXME: have to see from where to get this info, perhaps this card
1670          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1671          * common with the Planet Access Points. -acme
1672          */
1673         wrqu->bitrate.value = 2000000;
1674         wrqu->bitrate.fixed = 1;
1675         return 0;
1676 }
1677
1678 static int wl3501_get_rts_threshold(struct net_device *dev,
1679                                     struct iw_request_info *info,
1680                                     union iwreq_data *wrqu, char *extra)
1681 {
1682         u16 threshold; /* size checked: it is u16 */
1683         struct wl3501_card *this = netdev_priv(dev);
1684         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1685                                       &threshold, sizeof(threshold));
1686         if (!rc) {
1687                 wrqu->rts.value = threshold;
1688                 wrqu->rts.disabled = threshold >= 2347;
1689                 wrqu->rts.fixed = 1;
1690         }
1691         return rc;
1692 }
1693
1694 static int wl3501_get_frag_threshold(struct net_device *dev,
1695                                      struct iw_request_info *info,
1696                                      union iwreq_data *wrqu, char *extra)
1697 {
1698         u16 threshold; /* size checked: it is u16 */
1699         struct wl3501_card *this = netdev_priv(dev);
1700         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1701                                       &threshold, sizeof(threshold));
1702         if (!rc) {
1703                 wrqu->frag.value = threshold;
1704                 wrqu->frag.disabled = threshold >= 2346;
1705                 wrqu->frag.fixed = 1;
1706         }
1707         return rc;
1708 }
1709
1710 static int wl3501_get_txpow(struct net_device *dev,
1711                             struct iw_request_info *info,
1712                             union iwreq_data *wrqu, char *extra)
1713 {
1714         u16 txpow;
1715         struct wl3501_card *this = netdev_priv(dev);
1716         int rc = wl3501_get_mib_value(this,
1717                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1718                                       &txpow, sizeof(txpow));
1719         if (!rc) {
1720                 wrqu->txpower.value = txpow;
1721                 wrqu->txpower.disabled = 0;
1722                 /*
1723                  * From the MIB values I think this can be configurable,
1724                  * as it lists several tx power levels -acme
1725                  */
1726                 wrqu->txpower.fixed = 0;
1727                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1728         }
1729         return rc;
1730 }
1731
1732 static int wl3501_get_retry(struct net_device *dev,
1733                             struct iw_request_info *info,
1734                             union iwreq_data *wrqu, char *extra)
1735 {
1736         u8 retry; /* size checked: it is u8 */
1737         struct wl3501_card *this = netdev_priv(dev);
1738         int rc = wl3501_get_mib_value(this,
1739                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1740                                       &retry, sizeof(retry));
1741         if (rc)
1742                 goto out;
1743         if (wrqu->retry.flags & IW_RETRY_LONG) {
1744                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1745                 goto set_value;
1746         }
1747         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1748                                   &retry, sizeof(retry));
1749         if (rc)
1750                 goto out;
1751         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1752 set_value:
1753         wrqu->retry.value = retry;
1754         wrqu->retry.disabled = 0;
1755 out:
1756         return rc;
1757 }
1758
1759 static int wl3501_get_encode(struct net_device *dev,
1760                              struct iw_request_info *info,
1761                              union iwreq_data *wrqu, char *extra)
1762 {
1763         u8 implemented, restricted, keys[100], len_keys, tocopy;
1764         struct wl3501_card *this = netdev_priv(dev);
1765         int rc = wl3501_get_mib_value(this,
1766                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1767                                       &implemented, sizeof(implemented));
1768         if (rc)
1769                 goto out;
1770         if (!implemented) {
1771                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1772                 goto out;
1773         }
1774         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1775                                   &restricted, sizeof(restricted));
1776         if (rc)
1777                 goto out;
1778         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1779                                             IW_ENCODE_OPEN;
1780         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1781                                   &len_keys, sizeof(len_keys));
1782         if (rc)
1783                 goto out;
1784         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1785                                   keys, len_keys);
1786         if (rc)
1787                 goto out;
1788         tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1789         tocopy = min_t(u8, tocopy, 100);
1790         wrqu->encoding.length = tocopy;
1791         memcpy(extra, keys, tocopy);
1792 out:
1793         return rc;
1794 }
1795
1796 static int wl3501_get_power(struct net_device *dev,
1797                             struct iw_request_info *info,
1798                             union iwreq_data *wrqu, char *extra)
1799 {
1800         u8 pwr_state;
1801         struct wl3501_card *this = netdev_priv(dev);
1802         int rc = wl3501_get_mib_value(this,
1803                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1804                                       &pwr_state, sizeof(pwr_state));
1805         if (rc)
1806                 goto out;
1807         wrqu->power.disabled = !pwr_state;
1808         wrqu->power.flags = IW_POWER_ON;
1809 out:
1810         return rc;
1811 }
1812
1813 static const iw_handler wl3501_handler[] = {
1814         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1815         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1816         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1817         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1818         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1819         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1820         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1821         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1822         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1823         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1824         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1825         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1826         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1827         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1828         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1829         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1830         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1831         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1832         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1833         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1834         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1835         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1836         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1837         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1838         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1839         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1840 };
1841
1842 static const struct iw_handler_def wl3501_handler_def = {
1843         .num_standard   = ARRAY_SIZE(wl3501_handler),
1844         .standard       = (iw_handler *)wl3501_handler,
1845         .get_wireless_stats = wl3501_get_wireless_stats,
1846 };
1847
1848 static const struct net_device_ops wl3501_netdev_ops = {
1849         .ndo_open               = wl3501_open,
1850         .ndo_stop               = wl3501_close,
1851         .ndo_start_xmit         = wl3501_hard_start_xmit,
1852         .ndo_tx_timeout         = wl3501_tx_timeout,
1853         .ndo_set_mac_address    = eth_mac_addr,
1854         .ndo_validate_addr      = eth_validate_addr,
1855 };
1856
1857 static int wl3501_probe(struct pcmcia_device *p_dev)
1858 {
1859         struct net_device *dev;
1860         struct wl3501_card *this;
1861
1862         /* The io structure describes IO port mapping */
1863         p_dev->resource[0]->end = 16;
1864         p_dev->resource[0]->flags       = IO_DATA_PATH_WIDTH_8;
1865
1866         /* General socket configuration */
1867         p_dev->config_flags     = CONF_ENABLE_IRQ;
1868         p_dev->config_index     = 1;
1869
1870         dev = alloc_etherdev(sizeof(struct wl3501_card));
1871         if (!dev)
1872                 goto out_link;
1873
1874
1875         dev->netdev_ops         = &wl3501_netdev_ops;
1876         dev->watchdog_timeo     = 5 * HZ;
1877
1878         this = netdev_priv(dev);
1879         this->wireless_data.spy_data = &this->spy_data;
1880         this->p_dev = p_dev;
1881         dev->wireless_data      = &this->wireless_data;
1882         dev->wireless_handlers  = &wl3501_handler_def;
1883         netif_stop_queue(dev);
1884         p_dev->priv = dev;
1885
1886         return wl3501_config(p_dev);
1887 out_link:
1888         return -ENOMEM;
1889 }
1890
1891 static int wl3501_config(struct pcmcia_device *link)
1892 {
1893         struct net_device *dev = link->priv;
1894         int i = 0, j, ret;
1895         struct wl3501_card *this;
1896
1897         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1898          * want, you can also read the card's config table to pick addresses --
1899          * see the serial driver for an example. */
1900         link->io_lines = 5;
1901
1902         for (j = 0x280; j < 0x400; j += 0x20) {
1903                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1904                  * 0x200-0x2ff, and so on, because this seems safer */
1905                 link->resource[0]->start = j;
1906                 link->resource[1]->start = link->resource[0]->start + 0x10;
1907                 i = pcmcia_request_io(link);
1908                 if (i == 0)
1909                         break;
1910         }
1911         if (i != 0)
1912                 goto failed;
1913
1914         /* Now allocate an interrupt line. Note that this does not actually
1915          * assign a handler to the interrupt. */
1916
1917         ret = pcmcia_request_irq(link, wl3501_interrupt);
1918         if (ret)
1919                 goto failed;
1920
1921         ret = pcmcia_enable_device(link);
1922         if (ret)
1923                 goto failed;
1924
1925         dev->irq = link->irq;
1926         dev->base_addr = link->resource[0]->start;
1927         SET_NETDEV_DEV(dev, &link->dev);
1928         if (register_netdev(dev)) {
1929                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1930                 goto failed;
1931         }
1932
1933         this = netdev_priv(dev);
1934
1935         this->base_addr = dev->base_addr;
1936
1937         if (!wl3501_get_flash_mac_addr(this)) {
1938                 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1939                        dev->name);
1940                 unregister_netdev(dev);
1941                 goto failed;
1942         }
1943
1944         for (i = 0; i < 6; i++)
1945                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
1946
1947         /* print probe information */
1948         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1949                "MAC addr in flash ROM:%pM\n",
1950                dev->name, this->base_addr, (int)dev->irq,
1951                dev->dev_addr);
1952         /*
1953          * Initialize card parameters - added by jss
1954          */
1955         this->net_type          = IW_MODE_INFRA;
1956         this->bss_cnt           = 0;
1957         this->join_sta_bss      = 0;
1958         this->adhoc_times       = 0;
1959         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1960                                  "ANY", 3);
1961         this->card_name[0]      = '\0';
1962         this->firmware_date[0]  = '\0';
1963         this->rssi              = 255;
1964         this->chan              = iw_default_channel(this->reg_domain);
1965         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1966         spin_lock_init(&this->lock);
1967         init_waitqueue_head(&this->wait);
1968         netif_start_queue(dev);
1969         return 0;
1970
1971 failed:
1972         wl3501_release(link);
1973         return -ENODEV;
1974 }
1975
1976 static void wl3501_release(struct pcmcia_device *link)
1977 {
1978         pcmcia_disable_device(link);
1979 }
1980
1981 static int wl3501_suspend(struct pcmcia_device *link)
1982 {
1983         struct net_device *dev = link->priv;
1984
1985         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1986         if (link->open)
1987                 netif_device_detach(dev);
1988
1989         return 0;
1990 }
1991
1992 static int wl3501_resume(struct pcmcia_device *link)
1993 {
1994         struct net_device *dev = link->priv;
1995
1996         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
1997         if (link->open) {
1998                 wl3501_reset(dev);
1999                 netif_device_attach(dev);
2000         }
2001
2002         return 0;
2003 }
2004
2005
2006 static const struct pcmcia_device_id wl3501_ids[] = {
2007         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2008         PCMCIA_DEVICE_NULL
2009 };
2010 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2011
2012 static struct pcmcia_driver wl3501_driver = {
2013         .owner          = THIS_MODULE,
2014         .name           = "wl3501_cs",
2015         .probe          = wl3501_probe,
2016         .remove         = wl3501_detach,
2017         .id_table       = wl3501_ids,
2018         .suspend        = wl3501_suspend,
2019         .resume         = wl3501_resume,
2020 };
2021 module_pcmcia_driver(wl3501_driver);
2022
2023 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2024               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2025               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2026 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2027 MODULE_LICENSE("GPL");