drivers/net/wireless/wl3501_cs.c

   1 /*
   2  * WL3501 Wireless LAN PCMCIA Card Driver for Linux
   3  * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
   4  * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   5  * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
   6  *
   7  * References used by Fox Chen while writing the original driver for 2.0.30:
   8  *
   9  *   1. WL24xx packet drivers (tooasm.asm)
  10  *   2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
  11  *   3. IEEE 802.11
  12  *   4. Linux network driver (/usr/src/linux/drivers/net)
  13  *   5. ISA card driver - wl24.c
  14  *   6. Linux PCMCIA skeleton driver - skeleton.c
  15  *   7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
  16  *
  17  * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
  18  *   1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
  19  *      rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
  20  *      (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
  21  *       ETHER/IP/UDP/TCP header, and acknowledgement overhead)
  22  *
  23  * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
  24  * 173 Kbytes/s in TCP.
  25  *
  26  * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
  27  * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
  28  */
  29
  30 #include <linux/delay.h>
  31 #include <linux/types.h>
  32 #include <linux/ethtool.h>
  33 #include <linux/init.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/in.h>
  36 #include <linux/kernel.h>
  37 #include <linux/module.h>
  38 #include <linux/fcntl.h>
  39 #include <linux/if_arp.h>
  40 #include <linux/ioport.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/skbuff.h>
  44 #include <linux/slab.h>
  45 #include <linux/string.h>
  46 #include <linux/wireless.h>
  47
  48 #include <net/iw_handler.h>
  49
  50 #include <pcmcia/cs_types.h>
  51 #include <pcmcia/cs.h>
  52 #include <pcmcia/cistpl.h>
  53 #include <pcmcia/cisreg.h>
  54 #include <pcmcia/ds.h>
  55
  56 #include <asm/io.h>
  57 #include <asm/uaccess.h>
  58 #include <asm/system.h>
  59
  60 #include "wl3501.h"
  61
  62 #ifndef __i386__
  63 #define slow_down_io()
  64 #endif
  65
  66 /* For rough constant delay */
  67 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  68
  69 /*
  70  * All the PCMCIA modules use PCMCIA_DEBUG to control debugging.  If you do not
  71  * define PCMCIA_DEBUG at all, all the debug code will be left out.  If you
  72  * compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
  73  * but it can then be enabled for specific modules at load time with a
  74  * 'pc_debug=#' option to insmod.
  75  */
  76 #define PCMCIA_DEBUG 0
  77 #ifdef PCMCIA_DEBUG
  78 static int pc_debug = PCMCIA_DEBUG;
  79 module_param(pc_debug, int, 0);
  80 #define dprintk(n, format, args...) \
  81         { if (pc_debug > (n)) \
  82                 printk(KERN_INFO "%s: " format "\n", __FUNCTION__ , ##args); }
  83 #else
  84 #define dprintk(n, format, args...)
  85 #endif
  86
  87 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  88 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  89 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  90
  91 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  92 #define WL3501_MAX_ADHOC_TRIES 16
  93
  94 #define WL3501_RESUME   0
  95 #define WL3501_SUSPEND  1
  96
  97 /*
  98  * The event() function is this driver's Card Services event handler.  It will
  99  * be called by Card Services when an appropriate card status event is
 100  * received. The config() and release() entry points are used to configure or
 101  * release a socket, in response to card insertion and ejection events.  They
 102  * are invoked from the wl24 event handler.
 103  */
 104 static int wl3501_config(struct pcmcia_device *link);
 105 static void wl3501_release(struct pcmcia_device *link);
 106
 107 /*
 108  * The dev_info variable is the "key" that is used to match up this
 109  * device driver with appropriate cards, through the card configuration
 110  * database.
 111  */
 112 static dev_info_t wl3501_dev_info = "wl3501_cs";
 113
 114 static int wl3501_chan2freq[] = {
 115         [0]  = 2412, [1]  = 2417, [2]  = 2422, [3]  = 2427, [4] = 2432,
 116         [5]  = 2437, [6]  = 2442, [7]  = 2447, [8]  = 2452, [9] = 2457,
 117         [10] = 2462, [11] = 2467, [12] = 2472, [13] = 2477,
 118 };
 119
 120 static const struct {
 121         int reg_domain;
 122         int min, max, deflt;
 123 } iw_channel_table[] = {
 124         {
 125                 .reg_domain = IW_REG_DOMAIN_FCC,
 126                 .min        = 1,
 127                 .max        = 11,
 128                 .deflt      = 1,
 129         },
 130         {
 131                 .reg_domain = IW_REG_DOMAIN_DOC,
 132                 .min        = 1,
 133                 .max        = 11,
 134                 .deflt      = 1,
 135         },
 136         {
 137                 .reg_domain = IW_REG_DOMAIN_ETSI,
 138                 .min        = 1,
 139                 .max        = 13,
 140                 .deflt      = 1,
 141         },
 142         {
 143                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 144                 .min        = 10,
 145                 .max        = 11,
 146                 .deflt      = 10,
 147         },
 148         {
 149                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 150                 .min        = 10,
 151                 .max        = 13,
 152                 .deflt      = 10,
 153         },
 154         {
 155                 .reg_domain = IW_REG_DOMAIN_MKK,
 156                 .min        = 14,
 157                 .max        = 14,
 158                 .deflt      = 14,
 159         },
 160         {
 161                 .reg_domain = IW_REG_DOMAIN_MKK1,
 162                 .min        = 1,
 163                 .max        = 14,
 164                 .deflt      = 1,
 165         },
 166         {
 167                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 168                 .min        = 3,
 169                 .max        = 9,
 170                 .deflt      = 9,
 171         },
 172 };
 173
 174 /**
 175  * iw_valid_channel - validate channel in regulatory domain
 176  * @reg_comain - regulatory domain
 177  * @channel - channel to validate
 178  *
 179  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 180  */
 181 static int iw_valid_channel(int reg_domain, int channel)
 182 {
 183         int i, rc = 0;
 184
 185         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 186                 if (reg_domain == iw_channel_table[i].reg_domain) {
 187                         rc = channel >= iw_channel_table[i].min &&
 188                              channel <= iw_channel_table[i].max;
 189                         break;
 190                 }
 191         return rc;
 192 }
 193
 194 /**
 195  * iw_default_channel - get default channel for a regulatory domain
 196  * @reg_comain - regulatory domain
 197  *
 198  * Returns the default channel for a regulatory domain
 199  */
 200 static int iw_default_channel(int reg_domain)
 201 {
 202         int i, rc = 1;
 203
 204         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 205                 if (reg_domain == iw_channel_table[i].reg_domain) {
 206                         rc = iw_channel_table[i].deflt;
 207                         break;
 208                 }
 209         return rc;
 210 }
 211
 212 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 213                                      struct iw_mgmt_info_element *el,
 214                                      void *value, int len)
 215 {
 216         el->id  = id;
 217         el->len = len;
 218         memcpy(el->data, value, len);
 219 }
 220
 221 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 222                                       struct iw_mgmt_info_element *from)
 223 {
 224         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 225 }
 226
 227 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 228 {
 229         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 230 }
 231
 232 /*
 233  * Get Ethernet MAC addresss.
 234  *
 235  * WARNING: We switch to FPAGE0 and switc back again.
 236  *          Making sure there is no other WL function beening called by ISR.
 237  */
 238 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 239 {
 240         int base_addr = this->base_addr;
 241
 242         /* get MAC addr */
 243         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 244         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 245         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 246
 247         /* wait for reading EEPROM */
 248         WL3501_NOPLOOP(100);
 249         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 250         WL3501_NOPLOOP(100);
 251         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 252         WL3501_NOPLOOP(100);
 253         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 254         WL3501_NOPLOOP(100);
 255         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 256         WL3501_NOPLOOP(100);
 257         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 258         WL3501_NOPLOOP(100);
 259         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 260         WL3501_NOPLOOP(100);
 261         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 262         WL3501_NOPLOOP(100);
 263         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 264         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 265         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 266         WL3501_NOPLOOP(100);
 267         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 268         WL3501_NOPLOOP(100);
 269         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 270         /* switch to SRAM Page 0 (for safety) */
 271         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 272
 273         /* The MAC addr should be 00:60:... */
 274         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 275 }
 276
 277 /**
 278  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 279  * @dest: Card addressing space
 280  * @src: PC addressing space
 281  * @size: Bytes to move
 282  *
 283  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 284  */
 285 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 286                               int size)
 287 {
 288         /* switch to SRAM Page 0 */
 289         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 290                                                    WL3501_BSS_SPAGE0);
 291         /* set LMAL and LMAH */
 292         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 293         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 294
 295         /* rep out to Port A */
 296         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 297 }
 298
 299 /**
 300  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 301  * @src: Card addressing space
 302  * @dest: PC addressing space
 303  * @size: Bytes to move
 304  *
 305  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 306  */
 307 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 308                                 int size)
 309 {
 310         /* switch to SRAM Page 0 */
 311         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 312                                                   WL3501_BSS_SPAGE0);
 313         /* set LMAL and LMAH */
 314         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 315         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 316
 317         /* rep get from Port A */
 318         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 319 }
 320
 321 /*
 322  * Get/Allocate a free Tx Data Buffer
 323  *
 324  *  *--------------*-----------------*----------------------------------*
 325  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 326  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 327  *  *--------------*-----------------*----------------------------------*
 328  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 329  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 330  *
 331  * Return = Postion in Card
 332  */
 333 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 334 {
 335         u16 next, blk_cnt = 0, zero = 0;
 336         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 337         u16 ret = 0;
 338
 339         if (full_len > this->tx_buffer_cnt * 254)
 340                 goto out;
 341         ret = this->tx_buffer_head;
 342         while (full_len) {
 343                 if (full_len < 254)
 344                         full_len = 0;
 345                 else
 346                         full_len -= 254;
 347                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 348                                     sizeof(next));
 349                 if (!full_len)
 350                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 351                                           sizeof(zero));
 352                 this->tx_buffer_head = next;
 353                 blk_cnt++;
 354                 /* if buffer is not enough */
 355                 if (!next && full_len) {
 356                         this->tx_buffer_head = ret;
 357                         ret = 0;
 358                         goto out;
 359                 }
 360         }
 361         this->tx_buffer_cnt -= blk_cnt;
 362 out:
 363         return ret;
 364 }
 365
 366 /*
 367  * Free an allocated Tx Buffer. ptr must be correct position.
 368  */
 369 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 370 {
 371         /* check if all space is not free */
 372         if (!this->tx_buffer_head)
 373                 this->tx_buffer_head = ptr;
 374         else
 375                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 376                                   &ptr, sizeof(ptr));
 377         while (ptr) {
 378                 u16 next;
 379
 380                 this->tx_buffer_cnt++;
 381                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 382                 this->tx_buffer_tail = ptr;
 383                 ptr = next;
 384         }
 385 }
 386
 387 static int wl3501_esbq_req_test(struct wl3501_card *this)
 388 {
 389         u8 tmp;
 390
 391         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 392         return tmp & 0x80;
 393 }
 394
 395 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 396 {
 397         u16 tmp = 0;
 398
 399         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 400         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 401         this->esbq_req_head += 4;
 402         if (this->esbq_req_head >= this->esbq_req_end)
 403                 this->esbq_req_head = this->esbq_req_start;
 404 }
 405
 406 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 407 {
 408         int rc = -EIO;
 409
 410         if (wl3501_esbq_req_test(this)) {
 411                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 412                 if (ptr) {
 413                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 414                         wl3501_esbq_req(this, &ptr);
 415                         rc = 0;
 416                 }
 417         }
 418         return rc;
 419 }
 420
 421 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 422                                 void *bf, int size)
 423 {
 424         struct wl3501_get_req sig = {
 425                 .sig_id     = WL3501_SIG_GET_REQ,
 426                 .mib_attrib = index,
 427         };
 428         unsigned long flags;
 429         int rc = -EIO;
 430
 431         spin_lock_irqsave(&this->lock, flags);
 432         if (wl3501_esbq_req_test(this)) {
 433                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 434                 if (ptr) {
 435                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 436                         wl3501_esbq_req(this, &ptr);
 437                         this->sig_get_confirm.mib_status = 255;
 438                         spin_unlock_irqrestore(&this->lock, flags);
 439                         rc = wait_event_interruptible(this->wait,
 440                                 this->sig_get_confirm.mib_status != 255);
 441                         if (!rc)
 442                                 memcpy(bf, this->sig_get_confirm.mib_value,
 443                                        size);
 444                         goto out;
 445                 }
 446         }
 447         spin_unlock_irqrestore(&this->lock, flags);
 448 out:
 449         return rc;
 450 }
 451
 452 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 453 {
 454         struct wl3501_pwr_mgmt_req sig = {
 455                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 456                 .pwr_save       = suspend,
 457                 .wake_up        = !suspend,
 458                 .receive_dtims  = 10,
 459         };
 460         unsigned long flags;
 461         int rc = -EIO;
 462
 463         spin_lock_irqsave(&this->lock, flags);
 464         if (wl3501_esbq_req_test(this)) {
 465                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 466                 if (ptr) {
 467                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 468                         wl3501_esbq_req(this, &ptr);
 469                         this->sig_pwr_mgmt_confirm.status = 255;
 470                         spin_unlock_irqrestore(&this->lock, flags);
 471                         rc = wait_event_interruptible(this->wait,
 472                                 this->sig_pwr_mgmt_confirm.status != 255);
 473                         printk(KERN_INFO "%s: %s status=%d\n", __FUNCTION__,
 474                                suspend ? "suspend" : "resume",
 475                                this->sig_pwr_mgmt_confirm.status);
 476                         goto out;
 477                 }
 478         }
 479         spin_unlock_irqrestore(&this->lock, flags);
 480 out:
 481         return rc;
 482 }
 483
 484 /**
 485  * wl3501_send_pkt - Send a packet.
 486  * @this - card
 487  *
 488  * Send a packet.
 489  *
 490  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 491  *                                   data[6] - data[11] is Src MAC Addr)
 492  * Ref: IEEE 802.11
 493  */
 494 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 495 {
 496         u16 bf, sig_bf, next, tmplen, pktlen;
 497         struct wl3501_md_req sig = {
 498                 .sig_id = WL3501_SIG_MD_REQ,
 499         };
 500         u8 *pdata = (char *)data;
 501         int rc = -EIO;
 502
 503         if (wl3501_esbq_req_test(this)) {
 504                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 505                 rc = -ENOMEM;
 506                 if (!sig_bf)    /* No free buffer available */
 507                         goto out;
 508                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 509                 if (!bf) {
 510                         /* No free buffer available */
 511                         wl3501_free_tx_buffer(this, sig_bf);
 512                         goto out;
 513                 }
 514                 rc = 0;
 515                 memcpy(&sig.daddr[0], pdata, 12);
 516                 pktlen = len - 12;
 517                 pdata += 12;
 518                 sig.data = bf;
 519                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 520                         u8 addr4[ETH_ALEN] = {
 521                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 522                         };
 523
 524                         wl3501_set_to_wla(this, bf + 2 +
 525                                           offsetof(struct wl3501_tx_hdr, addr4),
 526                                           addr4, sizeof(addr4));
 527                         sig.size = pktlen + 24 + 4 + 6;
 528                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 529                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 530                                 pktlen -= tmplen;
 531                         } else {
 532                                 tmplen = pktlen;
 533                                 pktlen = 0;
 534                         }
 535                         wl3501_set_to_wla(this,
 536                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 537                                           pdata, tmplen);
 538                         pdata += tmplen;
 539                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 540                         bf = next;
 541                 } else {
 542                         sig.size = pktlen + 24 + 4 - 2;
 543                         pdata += 2;
 544                         pktlen -= 2;
 545                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 546                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 547                                 pktlen -= tmplen;
 548                         } else {
 549                                 tmplen = pktlen;
 550                                 pktlen = 0;
 551                         }
 552                         wl3501_set_to_wla(this, bf + 2 +
 553                                           offsetof(struct wl3501_tx_hdr, addr4),
 554                                           pdata, tmplen);
 555                         pdata += tmplen;
 556                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 557                         bf = next;
 558                 }
 559                 while (pktlen > 0) {
 560                         if (pktlen > 254) {
 561                                 tmplen = 254;
 562                                 pktlen -= 254;
 563                         } else {
 564                                 tmplen = pktlen;
 565                                 pktlen = 0;
 566                         }
 567                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 568                         pdata += tmplen;
 569                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 570                         bf = next;
 571                 }
 572                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 573                 wl3501_esbq_req(this, &sig_bf);
 574         }
 575 out:
 576         return rc;
 577 }
 578
 579 static int wl3501_mgmt_resync(struct wl3501_card *this)
 580 {
 581         struct wl3501_resync_req sig = {
 582                 .sig_id = WL3501_SIG_RESYNC_REQ,
 583         };
 584
 585         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 586 }
 587
 588 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 589 {
 590         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 591                                                  WL3501_NET_TYPE_ADHOC;
 592 }
 593
 594 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 595 {
 596         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 597                                                  WL3501_MGMT_CAPABILITY_IBSS;
 598 }
 599
 600 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 601 {
 602         struct wl3501_scan_req sig = {
 603                 .sig_id         = WL3501_SIG_SCAN_REQ,
 604                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 605                 .probe_delay    = 0x10,
 606                 .min_chan_time  = chan_time,
 607                 .max_chan_time  = chan_time,
 608                 .bss_type       = wl3501_fw_bss_type(this),
 609         };
 610
 611         this->bss_cnt = this->join_sta_bss = 0;
 612         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 613 }
 614
 615 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 616 {
 617         struct wl3501_join_req sig = {
 618                 .sig_id           = WL3501_SIG_JOIN_REQ,
 619                 .timeout          = 10,
 620                 .ds_pset = {
 621                         .el = {
 622                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 623                                 .len = 1,
 624                         },
 625                         .chan   = this->chan,
 626                 },
 627         };
 628
 629         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 630         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 631 }
 632
 633 static int wl3501_mgmt_start(struct wl3501_card *this)
 634 {
 635         struct wl3501_start_req sig = {
 636                 .sig_id                 = WL3501_SIG_START_REQ,
 637                 .beacon_period          = 400,
 638                 .dtim_period            = 1,
 639                 .ds_pset = {
 640                         .el = {
 641                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 642                                 .len = 1,
 643                         },
 644                         .chan   = this->chan,
 645                 },
 646                 .bss_basic_rset = {
 647                         .el = {
 648                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 649                                 .len = 2,
 650                         },
 651                         .data_rate_labels = {
 652                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 653                                       IW_MGMT_RATE_LABEL_1MBIT,
 654                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 655                                       IW_MGMT_RATE_LABEL_2MBIT,
 656                         },
 657                 },
 658                 .operational_rset       = {
 659                         .el = {
 660                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 661                                 .len = 2,
 662                         },
 663                         .data_rate_labels = {
 664                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 665                                       IW_MGMT_RATE_LABEL_1MBIT,
 666                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 667                                       IW_MGMT_RATE_LABEL_2MBIT,
 668                         },
 669                 },
 670                 .ibss_pset              = {
 671                         .el = {
 672                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 673                                 .len     = 2,
 674                         },
 675                         .atim_window = 10,
 676                 },
 677                 .bss_type               = wl3501_fw_bss_type(this),
 678                 .cap_info               = wl3501_fw_cap_info(this),
 679         };
 680
 681         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 682         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 683         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 684 }
 685
 686 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 687 {
 688         u16 i = 0;
 689         int matchflag = 0;
 690         struct wl3501_scan_confirm sig;
 691
 692         dprintk(3, "entry");
 693         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 694         if (sig.status == WL3501_STATUS_SUCCESS) {
 695                 dprintk(3, "success");
 696                 if ((this->net_type == IW_MODE_INFRA &&
 697                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 698                     (this->net_type == IW_MODE_ADHOC &&
 699                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 700                     this->net_type == IW_MODE_AUTO) {
 701                         if (!this->essid.el.len)
 702                                 matchflag = 1;
 703                         else if (this->essid.el.len == 3 &&
 704                                  !memcmp(this->essid.essid, "ANY", 3))
 705                                 matchflag = 1;
 706                         else if (this->essid.el.len != sig.ssid.el.len)
 707                                 matchflag = 0;
 708                         else if (memcmp(this->essid.essid, sig.ssid.essid,
 709                                         this->essid.el.len))
 710                                 matchflag = 0;
 711                         else
 712                                 matchflag = 1;
 713                         if (matchflag) {
 714                                 for (i = 0; i < this->bss_cnt; i++) {
 715                                         if (!memcmp(this->bss_set[i].bssid,
 716                                                     sig.bssid, ETH_ALEN)) {
 717                                                 matchflag = 0;
 718                                                 break;
 719                                         }
 720                                 }
 721                         }
 722                         if (matchflag && (i < 20)) {
 723                                 memcpy(&this->bss_set[i].beacon_period,
 724                                        &sig.beacon_period, 73);
 725                                 this->bss_cnt++;
 726                                 this->rssi = sig.rssi;
 727                         }
 728                 }
 729         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 730                 dprintk(3, "timeout");
 731                 this->join_sta_bss = 0;
 732                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 733                         if (!wl3501_mgmt_join(this, i))
 734                                 break;
 735                 this->join_sta_bss = i;
 736                 if (this->join_sta_bss == this->bss_cnt) {
 737                         if (this->net_type == IW_MODE_INFRA)
 738                                 wl3501_mgmt_scan(this, 100);
 739                         else {
 740                                 this->adhoc_times++;
 741                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 742                                         wl3501_mgmt_start(this);
 743                                 else
 744                                         wl3501_mgmt_scan(this, 100);
 745                         }
 746                 }
 747         }
 748 }
 749
 750 /**
 751  * wl3501_block_interrupt - Mask interrupt from SUTRO
 752  * @this - card
 753  *
 754  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 755  * Return: 1 if interrupt is originally enabled
 756  */
 757 static int wl3501_block_interrupt(struct wl3501_card *this)
 758 {
 759         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 760         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 761                         WL3501_GCR_ENECINT));
 762
 763         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 764         return old & WL3501_GCR_ENECINT;
 765 }
 766
 767 /**
 768  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 769  * @this - card
 770  *
 771  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 772  * Return: 1 if interrupt is originally enabled
 773  */
 774 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 775 {
 776         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 777         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 778                   WL3501_GCR_ENECINT;
 779
 780         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 781         return old & WL3501_GCR_ENECINT;
 782 }
 783
 784 /**
 785  * wl3501_receive - Receive data from Receive Queue.
 786  *
 787  * Receive data from Receive Queue.
 788  *
 789  * @this: card
 790  * @bf: address of host
 791  * @size: size of buffer.
 792  */
 793 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 794 {
 795         u16 next_addr, next_addr1;
 796         u8 *data = bf + 12;
 797
 798         size -= 12;
 799         wl3501_get_from_wla(this, this->start_seg + 2,
 800                             &next_addr, sizeof(next_addr));
 801         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 802                 wl3501_get_from_wla(this,
 803                                     this->start_seg +
 804                                         sizeof(struct wl3501_rx_hdr), data,
 805                                     WL3501_BLKSZ -
 806                                         sizeof(struct wl3501_rx_hdr));
 807                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 808                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 809         } else {
 810                 wl3501_get_from_wla(this,
 811                                     this->start_seg +
 812                                         sizeof(struct wl3501_rx_hdr),
 813                                     data, size);
 814                 size = 0;
 815         }
 816         while (size > 0) {
 817                 if (size > WL3501_BLKSZ - 5) {
 818                         wl3501_get_from_wla(this, next_addr + 5, data,
 819                                             WL3501_BLKSZ - 5);
 820                         size -= WL3501_BLKSZ - 5;
 821                         data += WL3501_BLKSZ - 5;
 822                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 823                                             sizeof(next_addr1));
 824                         next_addr = next_addr1;
 825                 } else {
 826                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 827                         size = 0;
 828                 }
 829         }
 830         return 0;
 831 }
 832
 833 static void wl3501_esbq_req_free(struct wl3501_card *this)
 834 {
 835         u8 tmp;
 836         u16 addr;
 837
 838         if (this->esbq_req_head == this->esbq_req_tail)
 839                 goto out;
 840         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 841         if (!(tmp & 0x80))
 842                 goto out;
 843         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 844         wl3501_free_tx_buffer(this, addr);
 845         this->esbq_req_tail += 4;
 846         if (this->esbq_req_tail >= this->esbq_req_end)
 847                 this->esbq_req_tail = this->esbq_req_start;
 848 out:
 849         return;
 850 }
 851
 852 static int wl3501_esbq_confirm(struct wl3501_card *this)
 853 {
 854         u8 tmp;
 855
 856         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 857         return tmp & 0x80;
 858 }
 859
 860 static void wl3501_online(struct net_device *dev)
 861 {
 862         struct wl3501_card *this = netdev_priv(dev);
 863         DECLARE_MAC_BUF(mac);
 864
 865         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %s\n",
 866                dev->name, print_mac(mac, this->bssid));
 867         netif_wake_queue(dev);
 868 }
 869
 870 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 871 {
 872         u8 tmp = 0;
 873
 874         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 875         this->esbq_confirm += 4;
 876         if (this->esbq_confirm >= this->esbq_confirm_end)
 877                 this->esbq_confirm = this->esbq_confirm_start;
 878 }
 879
 880 static int wl3501_mgmt_auth(struct wl3501_card *this)
 881 {
 882         struct wl3501_auth_req sig = {
 883                 .sig_id  = WL3501_SIG_AUTH_REQ,
 884                 .type    = WL3501_SYS_TYPE_OPEN,
 885                 .timeout = 1000,
 886         };
 887
 888         dprintk(3, "entry");
 889         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 890         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 891 }
 892
 893 static int wl3501_mgmt_association(struct wl3501_card *this)
 894 {
 895         struct wl3501_assoc_req sig = {
 896                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 897                 .timeout         = 1000,
 898                 .listen_interval = 5,
 899                 .cap_info        = this->cap_info,
 900         };
 901
 902         dprintk(3, "entry");
 903         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 904         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 905 }
 906
 907 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 908 {
 909         struct wl3501_card *this = netdev_priv(dev);
 910         struct wl3501_join_confirm sig;
 911
 912         dprintk(3, "entry");
 913         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 914         if (sig.status == WL3501_STATUS_SUCCESS) {
 915                 if (this->net_type == IW_MODE_INFRA) {
 916                         if (this->join_sta_bss < this->bss_cnt) {
 917                                 const int i = this->join_sta_bss;
 918                                 memcpy(this->bssid,
 919                                        this->bss_set[i].bssid, ETH_ALEN);
 920                                 this->chan = this->bss_set[i].ds_pset.chan;
 921                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 922                                                      &this->bss_set[i].ssid.el);
 923                                 wl3501_mgmt_auth(this);
 924                         }
 925                 } else {
 926                         const int i = this->join_sta_bss;
 927
 928                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 929                         this->chan = this->bss_set[i].ds_pset.chan;
 930                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 931                                                   &this->bss_set[i].ssid.el);
 932                         wl3501_online(dev);
 933                 }
 934         } else {
 935                 int i;
 936                 this->join_sta_bss++;
 937                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 938                         if (!wl3501_mgmt_join(this, i))
 939                                 break;
 940                 this->join_sta_bss = i;
 941                 if (this->join_sta_bss == this->bss_cnt) {
 942                         if (this->net_type == IW_MODE_INFRA)
 943                                 wl3501_mgmt_scan(this, 100);
 944                         else {
 945                                 this->adhoc_times++;
 946                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 947                                         wl3501_mgmt_start(this);
 948                                 else
 949                                         wl3501_mgmt_scan(this, 100);
 950                         }
 951                 }
 952         }
 953 }
 954
 955 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 956                                           struct wl3501_card *this)
 957 {
 958         if (this->net_type == IW_MODE_INFRA) {
 959                 printk(KERN_INFO "Wireless LAN offline\n");
 960                 netif_stop_queue(dev);
 961                 wl3501_mgmt_resync(this);
 962         }
 963 }
 964
 965 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 966                                                struct wl3501_card *this,
 967                                                u16 addr)
 968 {
 969         struct wl3501_md_confirm sig;
 970
 971         dprintk(3, "entry");
 972         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 973         wl3501_free_tx_buffer(this, sig.data);
 974         if (netif_queue_stopped(dev))
 975                 netif_wake_queue(dev);
 976 }
 977
 978 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 979                                            struct wl3501_card *this, u16 addr)
 980 {
 981         struct wl3501_md_ind sig;
 982         struct sk_buff *skb;
 983         u8 rssi, addr4[ETH_ALEN];
 984         u16 pkt_len;
 985
 986         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 987         this->start_seg = sig.data;
 988         wl3501_get_from_wla(this,
 989                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 990                             &rssi, sizeof(rssi));
 991         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 992
 993         wl3501_get_from_wla(this,
 994                             sig.data +
 995                                 offsetof(struct wl3501_rx_hdr, addr4),
 996                             &addr4, sizeof(addr4));
 997         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 998               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 999                 printk(KERN_INFO "Insupported packet type!\n");
1000                 return;
1001         }
1002         pkt_len = sig.size + 12 - 24 - 4 - 6;
1003
1004         skb = dev_alloc_skb(pkt_len + 5);
1005
1006         if (!skb) {
1007                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
1008                        dev->name, pkt_len);
1009                 this->stats.rx_dropped++;
1010         } else {
1011                 skb->dev = dev;
1012                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
1013                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
1014                 wl3501_receive(this, skb->data, pkt_len);
1015                 skb_put(skb, pkt_len);
1016                 skb->protocol   = eth_type_trans(skb, dev);
1017                 dev->last_rx    = jiffies;
1018                 this->stats.rx_packets++;
1019                 this->stats.rx_bytes += skb->len;
1020                 netif_rx(skb);
1021         }
1022 }
1023
1024 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1025                                                 u16 addr, void *sig, int size)
1026 {
1027         dprintk(3, "entry");
1028         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1029                             sizeof(this->sig_get_confirm));
1030         wake_up(&this->wait);
1031 }
1032
1033 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1034                                                   struct wl3501_card *this,
1035                                                   u16 addr)
1036 {
1037         struct wl3501_start_confirm sig;
1038
1039         dprintk(3, "entry");
1040         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1041         if (sig.status == WL3501_STATUS_SUCCESS)
1042                 netif_wake_queue(dev);
1043 }
1044
1045 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1046                                                   u16 addr)
1047 {
1048         struct wl3501_card *this = netdev_priv(dev);
1049         struct wl3501_assoc_confirm sig;
1050
1051         dprintk(3, "entry");
1052         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1053
1054         if (sig.status == WL3501_STATUS_SUCCESS)
1055                 wl3501_online(dev);
1056 }
1057
1058 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1059                                                  u16 addr)
1060 {
1061         struct wl3501_auth_confirm sig;
1062
1063         dprintk(3, "entry");
1064         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1065
1066         if (sig.status == WL3501_STATUS_SUCCESS)
1067                 wl3501_mgmt_association(this);
1068         else
1069                 wl3501_mgmt_resync(this);
1070 }
1071
1072 static inline void wl3501_rx_interrupt(struct net_device *dev)
1073 {
1074         int morepkts;
1075         u16 addr;
1076         u8 sig_id;
1077         struct wl3501_card *this = netdev_priv(dev);
1078
1079         dprintk(3, "entry");
1080 loop:
1081         morepkts = 0;
1082         if (!wl3501_esbq_confirm(this))
1083                 goto free;
1084         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1085         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1086
1087         switch (sig_id) {
1088         case WL3501_SIG_DEAUTH_IND:
1089         case WL3501_SIG_DISASSOC_IND:
1090         case WL3501_SIG_ALARM:
1091                 wl3501_alarm_interrupt(dev, this);
1092                 break;
1093         case WL3501_SIG_MD_CONFIRM:
1094                 wl3501_md_confirm_interrupt(dev, this, addr);
1095                 break;
1096         case WL3501_SIG_MD_IND:
1097                 wl3501_md_ind_interrupt(dev, this, addr);
1098                 break;
1099         case WL3501_SIG_GET_CONFIRM:
1100                 wl3501_get_confirm_interrupt(this, addr,
1101                                              &this->sig_get_confirm,
1102                                              sizeof(this->sig_get_confirm));
1103                 break;
1104         case WL3501_SIG_PWR_MGMT_CONFIRM:
1105                 wl3501_get_confirm_interrupt(this, addr,
1106                                              &this->sig_pwr_mgmt_confirm,
1107                                             sizeof(this->sig_pwr_mgmt_confirm));
1108                 break;
1109         case WL3501_SIG_START_CONFIRM:
1110                 wl3501_start_confirm_interrupt(dev, this, addr);
1111                 break;
1112         case WL3501_SIG_SCAN_CONFIRM:
1113                 wl3501_mgmt_scan_confirm(this, addr);
1114                 break;
1115         case WL3501_SIG_JOIN_CONFIRM:
1116                 wl3501_mgmt_join_confirm(dev, addr);
1117                 break;
1118         case WL3501_SIG_ASSOC_CONFIRM:
1119                 wl3501_assoc_confirm_interrupt(dev, addr);
1120                 break;
1121         case WL3501_SIG_AUTH_CONFIRM:
1122                 wl3501_auth_confirm_interrupt(this, addr);
1123                 break;
1124         case WL3501_SIG_RESYNC_CONFIRM:
1125                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1126                 break;
1127         }
1128         wl3501_esbq_confirm_done(this);
1129         morepkts = 1;
1130         /* free request if necessary */
1131 free:
1132         wl3501_esbq_req_free(this);
1133         if (morepkts)
1134                 goto loop;
1135 }
1136
1137 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1138 {
1139         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1140 }
1141
1142 /**
1143  * wl3501_interrupt - Hardware interrupt from card.
1144  * @irq - Interrupt number
1145  * @dev_id - net_device
1146  *
1147  * We must acknowledge the interrupt as soon as possible, and block the
1148  * interrupt from the same card immediately to prevent re-entry.
1149  *
1150  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1151  * On the other hand, to prevent SUTRO from malfunctioning, we must
1152  * unlock the SUTRO as soon as possible.
1153  */
1154 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1155 {
1156         struct net_device *dev = dev_id;
1157         struct wl3501_card *this;
1158
1159         this = netdev_priv(dev);
1160         spin_lock(&this->lock);
1161         wl3501_ack_interrupt(this);
1162         wl3501_block_interrupt(this);
1163         wl3501_rx_interrupt(dev);
1164         wl3501_unblock_interrupt(this);
1165         spin_unlock(&this->lock);
1166
1167         return IRQ_HANDLED;
1168 }
1169
1170 static int wl3501_reset_board(struct wl3501_card *this)
1171 {
1172         u8 tmp = 0;
1173         int i, rc = 0;
1174
1175         /* Coreset */
1176         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1177         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1178         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1179
1180         /* Reset SRAM 0x480 to zero */
1181         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1182
1183         /* Start up */
1184         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1185
1186         WL3501_NOPLOOP(1024 * 50);
1187
1188         wl3501_unblock_interrupt(this); /* acme: was commented */
1189
1190         /* Polling Self_Test_Status */
1191         for (i = 0; i < 10000; i++) {
1192                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1193
1194                 if (tmp == 'W') {
1195                         /* firmware complete all test successfully */
1196                         tmp = 'A';
1197                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1198                         goto out;
1199                 }
1200                 WL3501_NOPLOOP(10);
1201         }
1202         printk(KERN_WARNING "%s: failed to reset the board!\n", __FUNCTION__);
1203         rc = -ENODEV;
1204 out:
1205         return rc;
1206 }
1207
1208 static int wl3501_init_firmware(struct wl3501_card *this)
1209 {
1210         u16 ptr, next;
1211         int rc = wl3501_reset_board(this);
1212
1213         if (rc)
1214                 goto fail;
1215         this->card_name[0] = '\0';
1216         wl3501_get_from_wla(this, 0x1a00,
1217                             this->card_name, sizeof(this->card_name));
1218         this->card_name[sizeof(this->card_name) - 1] = '\0';
1219         this->firmware_date[0] = '\0';
1220         wl3501_get_from_wla(this, 0x1a40,
1221                             this->firmware_date, sizeof(this->firmware_date));
1222         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1223         /* Switch to SRAM Page 0 */
1224         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1225         /* Read parameter from card */
1226         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1227         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1228         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1229         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1230         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1231         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1232         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1233         this->esbq_req_end     += this->esbq_req_start;
1234         this->esbq_confirm      = this->esbq_confirm_start;
1235         this->esbq_confirm_end += this->esbq_confirm_start;
1236         /* Initial Tx Buffer */
1237         this->tx_buffer_cnt = 1;
1238         ptr = this->tx_buffer_head;
1239         next = ptr + WL3501_BLKSZ;
1240         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1241                 this->tx_buffer_cnt++;
1242                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1243                 ptr = next;
1244                 next = ptr + WL3501_BLKSZ;
1245         }
1246         rc = 0;
1247         next = 0;
1248         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1249         this->tx_buffer_tail = ptr;
1250 out:
1251         return rc;
1252 fail:
1253         printk(KERN_WARNING "%s: failed!\n", __FUNCTION__);
1254         goto out;
1255 }
1256
1257 static int wl3501_close(struct net_device *dev)
1258 {
1259         struct wl3501_card *this = netdev_priv(dev);
1260         int rc = -ENODEV;
1261         unsigned long flags;
1262         struct pcmcia_device *link;
1263         link = this->p_dev;
1264
1265         spin_lock_irqsave(&this->lock, flags);
1266         link->open--;
1267
1268         /* Stop wl3501_hard_start_xmit() from now on */
1269         netif_stop_queue(dev);
1270         wl3501_ack_interrupt(this);
1271
1272         /* Mask interrupts from the SUTRO */
1273         wl3501_block_interrupt(this);
1274
1275         rc = 0;
1276         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1277         spin_unlock_irqrestore(&this->lock, flags);
1278         return rc;
1279 }
1280
1281 /**
1282  * wl3501_reset - Reset the SUTRO.
1283  * @dev - network device
1284  *
1285  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1286  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1287  * is running. It seems to be dangerous.
1288  */
1289 static int wl3501_reset(struct net_device *dev)
1290 {
1291         struct wl3501_card *this = netdev_priv(dev);
1292         int rc = -ENODEV;
1293
1294         wl3501_block_interrupt(this);
1295
1296         if (wl3501_init_firmware(this)) {
1297                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1298                        dev->name);
1299                 /* Free IRQ, and mark IRQ as unused */
1300                 free_irq(dev->irq, dev);
1301                 goto out;
1302         }
1303
1304         /*
1305          * Queue has to be started only when the Card is Started
1306          */
1307         netif_stop_queue(dev);
1308         this->adhoc_times = 0;
1309         wl3501_ack_interrupt(this);
1310         wl3501_unblock_interrupt(this);
1311         wl3501_mgmt_scan(this, 100);
1312         dprintk(1, "%s: device reset", dev->name);
1313         rc = 0;
1314 out:
1315         return rc;
1316 }
1317
1318 static void wl3501_tx_timeout(struct net_device *dev)
1319 {
1320         struct wl3501_card *this = netdev_priv(dev);
1321         struct net_device_stats *stats = &this->stats;
1322         unsigned long flags;
1323         int rc;
1324
1325         stats->tx_errors++;
1326         spin_lock_irqsave(&this->lock, flags);
1327         rc = wl3501_reset(dev);
1328         spin_unlock_irqrestore(&this->lock, flags);
1329         if (rc)
1330                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1331                        dev->name, rc);
1332         else {
1333                 dev->trans_start = jiffies;
1334                 netif_wake_queue(dev);
1335         }
1336 }
1337
1338 /*
1339  * Return : 0 - OK
1340  *          1 - Could not transmit (dev_queue_xmit will queue it)
1341  *              and try to sent it later
1342  */
1343 static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1344 {
1345         int enabled, rc;
1346         struct wl3501_card *this = netdev_priv(dev);
1347         unsigned long flags;
1348
1349         spin_lock_irqsave(&this->lock, flags);
1350         enabled = wl3501_block_interrupt(this);
1351         dev->trans_start = jiffies;
1352         rc = wl3501_send_pkt(this, skb->data, skb->len);
1353         if (enabled)
1354                 wl3501_unblock_interrupt(this);
1355         if (rc) {
1356                 ++this->stats.tx_dropped;
1357                 netif_stop_queue(dev);
1358         } else {
1359                 ++this->stats.tx_packets;
1360                 this->stats.tx_bytes += skb->len;
1361                 kfree_skb(skb);
1362
1363                 if (this->tx_buffer_cnt < 2)
1364                         netif_stop_queue(dev);
1365         }
1366         spin_unlock_irqrestore(&this->lock, flags);
1367         return rc;
1368 }
1369
1370 static int wl3501_open(struct net_device *dev)
1371 {
1372         int rc = -ENODEV;
1373         struct wl3501_card *this = netdev_priv(dev);
1374         unsigned long flags;
1375         struct pcmcia_device *link;
1376         link = this->p_dev;
1377
1378         spin_lock_irqsave(&this->lock, flags);
1379         if (!pcmcia_dev_present(link))
1380                 goto out;
1381         netif_device_attach(dev);
1382         link->open++;
1383
1384         /* Initial WL3501 firmware */
1385         dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
1386         if (wl3501_init_firmware(this))
1387                 goto fail;
1388         /* Initial device variables */
1389         this->adhoc_times = 0;
1390         /* Acknowledge Interrupt, for cleaning last state */
1391         wl3501_ack_interrupt(this);
1392
1393         /* Enable interrupt from card after all */
1394         wl3501_unblock_interrupt(this);
1395         wl3501_mgmt_scan(this, 100);
1396         rc = 0;
1397         dprintk(1, "%s: WL3501 opened", dev->name);
1398         printk(KERN_INFO "%s: Card Name: %s\n"
1399                          "%s: Firmware Date: %s\n",
1400                          dev->name, this->card_name,
1401                          dev->name, this->firmware_date);
1402 out:
1403         spin_unlock_irqrestore(&this->lock, flags);
1404         return rc;
1405 fail:
1406         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1407         goto out;
1408 }
1409
1410 static struct net_device_stats *wl3501_get_stats(struct net_device *dev)
1411 {
1412         struct wl3501_card *this = netdev_priv(dev);
1413
1414         return &this->stats;
1415 }
1416
1417 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1418 {
1419         struct wl3501_card *this = netdev_priv(dev);
1420         struct iw_statistics *wstats = &this->wstats;
1421         u32 value; /* size checked: it is u32 */
1422
1423         memset(wstats, 0, sizeof(*wstats));
1424         wstats->status = netif_running(dev);
1425         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1426                                   &value, sizeof(value)))
1427                 wstats->discard.code += value;
1428         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1429                                   &value, sizeof(value)))
1430                 wstats->discard.code += value;
1431         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1432                                   &value, sizeof(value)))
1433                 wstats->discard.code += value;
1434         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1435                                   &value, sizeof(value)))
1436                 wstats->discard.retries = value;
1437         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1438                                   &value, sizeof(value)))
1439                 wstats->discard.misc += value;
1440         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1441                                   &value, sizeof(value)))
1442                 wstats->discard.misc += value;
1443         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1444                                   &value, sizeof(value)))
1445                 wstats->discard.misc += value;
1446         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1447                                   &value, sizeof(value)))
1448                 wstats->discard.misc += value;
1449         return wstats;
1450 }
1451
1452 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1453 {
1454         strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1455 }
1456
1457 static const struct ethtool_ops ops = {
1458         .get_drvinfo = wl3501_get_drvinfo
1459 };
1460
1461 /**
1462  * wl3501_detach - deletes a driver "instance"
1463  * @link - FILL_IN
1464  *
1465  * This deletes a driver "instance". The device is de-registered with Card
1466  * Services. If it has been released, all local data structures are freed.
1467  * Otherwise, the structures will be freed when the device is released.
1468  */
1469 static void wl3501_detach(struct pcmcia_device *link)
1470 {
1471         struct net_device *dev = link->priv;
1472
1473         /* If the device is currently configured and active, we won't actually
1474          * delete it yet.  Instead, it is marked so that when the release()
1475          * function is called, that will trigger a proper detach(). */
1476
1477         while (link->open > 0)
1478                 wl3501_close(dev);
1479
1480         netif_device_detach(dev);
1481         wl3501_release(link);
1482
1483         if (link->priv)
1484                 free_netdev(link->priv);
1485
1486         return;
1487 }
1488
1489 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1490                            union iwreq_data *wrqu, char *extra)
1491 {
1492         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1493         return 0;
1494 }
1495
1496 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1497                            union iwreq_data *wrqu, char *extra)
1498 {
1499         struct wl3501_card *this = netdev_priv(dev);
1500         int channel = wrqu->freq.m;
1501         int rc = -EINVAL;
1502
1503         if (iw_valid_channel(this->reg_domain, channel)) {
1504                 this->chan = channel;
1505                 rc = wl3501_reset(dev);
1506         }
1507         return rc;
1508 }
1509
1510 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1511                            union iwreq_data *wrqu, char *extra)
1512 {
1513         struct wl3501_card *this = netdev_priv(dev);
1514
1515         wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
1516         wrqu->freq.e = 1;
1517         return 0;
1518 }
1519
1520 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1521                            union iwreq_data *wrqu, char *extra)
1522 {
1523         int rc = -EINVAL;
1524
1525         if (wrqu->mode == IW_MODE_INFRA ||
1526             wrqu->mode == IW_MODE_ADHOC ||
1527             wrqu->mode == IW_MODE_AUTO) {
1528                 struct wl3501_card *this = netdev_priv(dev);
1529
1530                 this->net_type = wrqu->mode;
1531                 rc = wl3501_reset(dev);
1532         }
1533         return rc;
1534 }
1535
1536 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1537                            union iwreq_data *wrqu, char *extra)
1538 {
1539         struct wl3501_card *this = netdev_priv(dev);
1540
1541         wrqu->mode = this->net_type;
1542         return 0;
1543 }
1544
1545 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1546                            union iwreq_data *wrqu, char *extra)
1547 {
1548         struct wl3501_card *this = netdev_priv(dev);
1549
1550         wrqu->sens.value = this->rssi;
1551         wrqu->sens.disabled = !wrqu->sens.value;
1552         wrqu->sens.fixed = 1;
1553         return 0;
1554 }
1555
1556 static int wl3501_get_range(struct net_device *dev,
1557                             struct iw_request_info *info,
1558                             union iwreq_data *wrqu, char *extra)
1559 {
1560         struct iw_range *range = (struct iw_range *)extra;
1561
1562         /* Set the length (very important for backward compatibility) */
1563         wrqu->data.length = sizeof(*range);
1564
1565         /* Set all the info we don't care or don't know about to zero */
1566         memset(range, 0, sizeof(*range));
1567
1568         /* Set the Wireless Extension versions */
1569         range->we_version_compiled      = WIRELESS_EXT;
1570         range->we_version_source        = 1;
1571         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1572         /* FIXME: study the code to fill in more fields... */
1573         return 0;
1574 }
1575
1576 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1577                           union iwreq_data *wrqu, char *extra)
1578 {
1579         struct wl3501_card *this = netdev_priv(dev);
1580         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1581         int rc = -EINVAL;
1582
1583         /* FIXME: we support other ARPHRDs...*/
1584         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1585                 goto out;
1586         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1587                 /* FIXME: rescan? */
1588         } else
1589                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1590                 /* FIXME: rescan? deassoc & scan? */
1591         rc = 0;
1592 out:
1593         return rc;
1594 }
1595
1596 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1597                           union iwreq_data *wrqu, char *extra)
1598 {
1599         struct wl3501_card *this = netdev_priv(dev);
1600
1601         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1602         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1603         return 0;
1604 }
1605
1606 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1607                            union iwreq_data *wrqu, char *extra)
1608 {
1609         /*
1610          * FIXME: trigger scanning with a reset, yes, I'm lazy
1611          */
1612         return wl3501_reset(dev);
1613 }
1614
1615 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1616                            union iwreq_data *wrqu, char *extra)
1617 {
1618         struct wl3501_card *this = netdev_priv(dev);
1619         int i;
1620         char *current_ev = extra;
1621         struct iw_event iwe;
1622
1623         for (i = 0; i < this->bss_cnt; ++i) {
1624                 iwe.cmd                 = SIOCGIWAP;
1625                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1626                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1627                 current_ev = iwe_stream_add_event(info, current_ev,
1628                                                   extra + IW_SCAN_MAX_DATA,
1629                                                   &iwe, IW_EV_ADDR_LEN);
1630                 iwe.cmd           = SIOCGIWESSID;
1631                 iwe.u.data.flags  = 1;
1632                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1633                 current_ev = iwe_stream_add_point(info, current_ev,
1634                                                   extra + IW_SCAN_MAX_DATA,
1635                                                   &iwe,
1636                                                   this->bss_set[i].ssid.essid);
1637                 iwe.cmd    = SIOCGIWMODE;
1638                 iwe.u.mode = this->bss_set[i].bss_type;
1639                 current_ev = iwe_stream_add_event(info, current_ev,
1640                                                   extra + IW_SCAN_MAX_DATA,
1641                                                   &iwe, IW_EV_UINT_LEN);
1642                 iwe.cmd = SIOCGIWFREQ;
1643                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1644                 iwe.u.freq.e = 0;
1645                 current_ev = iwe_stream_add_event(info, current_ev,
1646                                                   extra + IW_SCAN_MAX_DATA,
1647                                                   &iwe, IW_EV_FREQ_LEN);
1648                 iwe.cmd = SIOCGIWENCODE;
1649                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1650                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1651                 else
1652                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1653                 iwe.u.data.length = 0;
1654                 current_ev = iwe_stream_add_point(info, current_ev,
1655                                                   extra + IW_SCAN_MAX_DATA,
1656                                                   &iwe, NULL);
1657         }
1658         /* Length of data */
1659         wrqu->data.length = (current_ev - extra);
1660         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1661         return 0;
1662 }
1663
1664 static int wl3501_set_essid(struct net_device *dev,
1665                             struct iw_request_info *info,
1666                             union iwreq_data *wrqu, char *extra)
1667 {
1668         struct wl3501_card *this = netdev_priv(dev);
1669
1670         if (wrqu->data.flags) {
1671                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1672                                          &this->essid.el,
1673                                          extra, wrqu->data.length);
1674         } else { /* We accept any ESSID */
1675                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1676                                          &this->essid.el, "ANY", 3);
1677         }
1678         return wl3501_reset(dev);
1679 }
1680
1681 static int wl3501_get_essid(struct net_device *dev,
1682                             struct iw_request_info *info,
1683                             union iwreq_data *wrqu, char *extra)
1684 {
1685         struct wl3501_card *this = netdev_priv(dev);
1686         unsigned long flags;
1687
1688         spin_lock_irqsave(&this->lock, flags);
1689         wrqu->essid.flags  = 1;
1690         wrqu->essid.length = this->essid.el.len;
1691         memcpy(extra, this->essid.essid, this->essid.el.len);
1692         spin_unlock_irqrestore(&this->lock, flags);
1693         return 0;
1694 }
1695
1696 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1697                            union iwreq_data *wrqu, char *extra)
1698 {
1699         struct wl3501_card *this = netdev_priv(dev);
1700
1701         if (wrqu->data.length > sizeof(this->nick))
1702                 return -E2BIG;
1703         strlcpy(this->nick, extra, wrqu->data.length);
1704         return 0;
1705 }
1706
1707 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1708                            union iwreq_data *wrqu, char *extra)
1709 {
1710         struct wl3501_card *this = netdev_priv(dev);
1711
1712         strlcpy(extra, this->nick, 32);
1713         wrqu->data.length = strlen(extra);
1714         return 0;
1715 }
1716
1717 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1718                            union iwreq_data *wrqu, char *extra)
1719 {
1720         /*
1721          * FIXME: have to see from where to get this info, perhaps this card
1722          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1723          * common with the Planet Access Points. -acme
1724          */
1725         wrqu->bitrate.value = 2000000;
1726         wrqu->bitrate.fixed = 1;
1727         return 0;
1728 }
1729
1730 static int wl3501_get_rts_threshold(struct net_device *dev,
1731                                     struct iw_request_info *info,
1732                                     union iwreq_data *wrqu, char *extra)
1733 {
1734         u16 threshold; /* size checked: it is u16 */
1735         struct wl3501_card *this = netdev_priv(dev);
1736         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1737                                       &threshold, sizeof(threshold));
1738         if (!rc) {
1739                 wrqu->rts.value = threshold;
1740                 wrqu->rts.disabled = threshold >= 2347;
1741                 wrqu->rts.fixed = 1;
1742         }
1743         return rc;
1744 }
1745
1746 static int wl3501_get_frag_threshold(struct net_device *dev,
1747                                      struct iw_request_info *info,
1748                                      union iwreq_data *wrqu, char *extra)
1749 {
1750         u16 threshold; /* size checked: it is u16 */
1751         struct wl3501_card *this = netdev_priv(dev);
1752         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1753                                       &threshold, sizeof(threshold));
1754         if (!rc) {
1755                 wrqu->frag.value = threshold;
1756                 wrqu->frag.disabled = threshold >= 2346;
1757                 wrqu->frag.fixed = 1;
1758         }
1759         return rc;
1760 }
1761
1762 static int wl3501_get_txpow(struct net_device *dev,
1763                             struct iw_request_info *info,
1764                             union iwreq_data *wrqu, char *extra)
1765 {
1766         u16 txpow;
1767         struct wl3501_card *this = netdev_priv(dev);
1768         int rc = wl3501_get_mib_value(this,
1769                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1770                                       &txpow, sizeof(txpow));
1771         if (!rc) {
1772                 wrqu->txpower.value = txpow;
1773                 wrqu->txpower.disabled = 0;
1774                 /*
1775                  * From the MIB values I think this can be configurable,
1776                  * as it lists several tx power levels -acme
1777                  */
1778                 wrqu->txpower.fixed = 0;
1779                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1780         }
1781         return rc;
1782 }
1783
1784 static int wl3501_get_retry(struct net_device *dev,
1785                             struct iw_request_info *info,
1786                             union iwreq_data *wrqu, char *extra)
1787 {
1788         u8 retry; /* size checked: it is u8 */
1789         struct wl3501_card *this = netdev_priv(dev);
1790         int rc = wl3501_get_mib_value(this,
1791                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1792                                       &retry, sizeof(retry));
1793         if (rc)
1794                 goto out;
1795         if (wrqu->retry.flags & IW_RETRY_LONG) {
1796                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1797                 goto set_value;
1798         }
1799         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1800                                   &retry, sizeof(retry));
1801         if (rc)
1802                 goto out;
1803         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1804 set_value:
1805         wrqu->retry.value = retry;
1806         wrqu->retry.disabled = 0;
1807 out:
1808         return rc;
1809 }
1810
1811 static int wl3501_get_encode(struct net_device *dev,
1812                              struct iw_request_info *info,
1813                              union iwreq_data *wrqu, char *extra)
1814 {
1815         u8 implemented, restricted, keys[100], len_keys, tocopy;
1816         struct wl3501_card *this = netdev_priv(dev);
1817         int rc = wl3501_get_mib_value(this,
1818                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1819                                       &implemented, sizeof(implemented));
1820         if (rc)
1821                 goto out;
1822         if (!implemented) {
1823                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1824                 goto out;
1825         }
1826         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1827                                   &restricted, sizeof(restricted));
1828         if (rc)
1829                 goto out;
1830         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1831                                             IW_ENCODE_OPEN;
1832         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1833                                   &len_keys, sizeof(len_keys));
1834         if (rc)
1835                 goto out;
1836         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1837                                   keys, len_keys);
1838         if (rc)
1839                 goto out;
1840         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1841         tocopy = min_t(u8, tocopy, 100);
1842         wrqu->encoding.length = tocopy;
1843         memcpy(extra, keys, tocopy);
1844 out:
1845         return rc;
1846 }
1847
1848 static int wl3501_get_power(struct net_device *dev,
1849                             struct iw_request_info *info,
1850                             union iwreq_data *wrqu, char *extra)
1851 {
1852         u8 pwr_state;
1853         struct wl3501_card *this = netdev_priv(dev);
1854         int rc = wl3501_get_mib_value(this,
1855                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1856                                       &pwr_state, sizeof(pwr_state));
1857         if (rc)
1858                 goto out;
1859         wrqu->power.disabled = !pwr_state;
1860         wrqu->power.flags = IW_POWER_ON;
1861 out:
1862         return rc;
1863 }
1864
1865 static const iw_handler wl3501_handler[] = {
1866         [SIOCGIWNAME    - SIOCIWFIRST] = wl3501_get_name,
1867         [SIOCSIWFREQ    - SIOCIWFIRST] = wl3501_set_freq,
1868         [SIOCGIWFREQ    - SIOCIWFIRST] = wl3501_get_freq,
1869         [SIOCSIWMODE    - SIOCIWFIRST] = wl3501_set_mode,
1870         [SIOCGIWMODE    - SIOCIWFIRST] = wl3501_get_mode,
1871         [SIOCGIWSENS    - SIOCIWFIRST] = wl3501_get_sens,
1872         [SIOCGIWRANGE   - SIOCIWFIRST] = wl3501_get_range,
1873         [SIOCSIWSPY     - SIOCIWFIRST] = iw_handler_set_spy,
1874         [SIOCGIWSPY     - SIOCIWFIRST] = iw_handler_get_spy,
1875         [SIOCSIWTHRSPY  - SIOCIWFIRST] = iw_handler_set_thrspy,
1876         [SIOCGIWTHRSPY  - SIOCIWFIRST] = iw_handler_get_thrspy,
1877         [SIOCSIWAP      - SIOCIWFIRST] = wl3501_set_wap,
1878         [SIOCGIWAP      - SIOCIWFIRST] = wl3501_get_wap,
1879         [SIOCSIWSCAN    - SIOCIWFIRST] = wl3501_set_scan,
1880         [SIOCGIWSCAN    - SIOCIWFIRST] = wl3501_get_scan,
1881         [SIOCSIWESSID   - SIOCIWFIRST] = wl3501_set_essid,
1882         [SIOCGIWESSID   - SIOCIWFIRST] = wl3501_get_essid,
1883         [SIOCSIWNICKN   - SIOCIWFIRST] = wl3501_set_nick,
1884         [SIOCGIWNICKN   - SIOCIWFIRST] = wl3501_get_nick,
1885         [SIOCGIWRATE    - SIOCIWFIRST] = wl3501_get_rate,
1886         [SIOCGIWRTS     - SIOCIWFIRST] = wl3501_get_rts_threshold,
1887         [SIOCGIWFRAG    - SIOCIWFIRST] = wl3501_get_frag_threshold,
1888         [SIOCGIWTXPOW   - SIOCIWFIRST] = wl3501_get_txpow,
1889         [SIOCGIWRETRY   - SIOCIWFIRST] = wl3501_get_retry,
1890         [SIOCGIWENCODE  - SIOCIWFIRST] = wl3501_get_encode,
1891         [SIOCGIWPOWER   - SIOCIWFIRST] = wl3501_get_power,
1892 };
1893
1894 static const struct iw_handler_def wl3501_handler_def = {
1895         .num_standard   = ARRAY_SIZE(wl3501_handler),
1896         .standard       = (iw_handler *)wl3501_handler,
1897         .get_wireless_stats = wl3501_get_wireless_stats,
1898 };
1899
1900 /**
1901  * wl3501_attach - creates an "instance" of the driver
1902  *
1903  * Creates an "instance" of the driver, allocating local data structures for
1904  * one device.  The device is registered with Card Services.
1905  *
1906  * The dev_link structure is initialized, but we don't actually configure the
1907  * card at this point -- we wait until we receive a card insertion event.
1908  */
1909 static int wl3501_probe(struct pcmcia_device *p_dev)
1910 {
1911         struct net_device *dev;
1912         struct wl3501_card *this;
1913
1914         /* The io structure describes IO port mapping */
1915         p_dev->io.NumPorts1     = 16;
1916         p_dev->io.Attributes1   = IO_DATA_PATH_WIDTH_8;
1917         p_dev->io.IOAddrLines   = 5;
1918
1919         /* Interrupt setup */
1920         p_dev->irq.Attributes   = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
1921         p_dev->irq.IRQInfo1     = IRQ_LEVEL_ID;
1922         p_dev->irq.Handler = wl3501_interrupt;
1923
1924         /* General socket configuration */
1925         p_dev->conf.Attributes  = CONF_ENABLE_IRQ;
1926         p_dev->conf.IntType     = INT_MEMORY_AND_IO;
1927         p_dev->conf.ConfigIndex = 1;
1928
1929         dev = alloc_etherdev(sizeof(struct wl3501_card));
1930         if (!dev)
1931                 goto out_link;
1932         dev->open               = wl3501_open;
1933         dev->stop               = wl3501_close;
1934         dev->hard_start_xmit    = wl3501_hard_start_xmit;
1935         dev->tx_timeout         = wl3501_tx_timeout;
1936         dev->watchdog_timeo     = 5 * HZ;
1937         dev->get_stats          = wl3501_get_stats;
1938         this = netdev_priv(dev);
1939         this->wireless_data.spy_data = &this->spy_data;
1940         this->p_dev = p_dev;
1941         dev->wireless_data      = &this->wireless_data;
1942         dev->wireless_handlers  = (struct iw_handler_def *)&wl3501_handler_def;
1943         SET_ETHTOOL_OPS(dev, &ops);
1944         netif_stop_queue(dev);
1945         p_dev->priv = p_dev->irq.Instance = dev;
1946
1947         return wl3501_config(p_dev);
1948 out_link:
1949         return -ENOMEM;
1950 }
1951
1952 #define CS_CHECK(fn, ret) \
1953 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
1954
1955 /**
1956  * wl3501_config - configure the PCMCIA socket and make eth device available
1957  * @link - FILL_IN
1958  *
1959  * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1960  * received, to configure the PCMCIA socket, and to make the ethernet device
1961  * available to the system.
1962  */
1963 static int wl3501_config(struct pcmcia_device *link)
1964 {
1965         struct net_device *dev = link->priv;
1966         int i = 0, j, last_fn, last_ret;
1967         struct wl3501_card *this;
1968         DECLARE_MAC_BUF(mac);
1969
1970         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1971          * want, you can also read the card's config table to pick addresses --
1972          * see the serial driver for an example. */
1973
1974         for (j = 0x280; j < 0x400; j += 0x20) {
1975                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1976                  * 0x200-0x2ff, and so on, because this seems safer */
1977                 link->io.BasePort1 = j;
1978                 link->io.BasePort2 = link->io.BasePort1 + 0x10;
1979                 i = pcmcia_request_io(link, &link->io);
1980                 if (i == CS_SUCCESS)
1981                         break;
1982         }
1983         if (i != CS_SUCCESS) {
1984                 cs_error(link, RequestIO, i);
1985                 goto failed;
1986         }
1987
1988         /* Now allocate an interrupt line. Note that this does not actually
1989          * assign a handler to the interrupt. */
1990
1991         CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
1992
1993         /* This actually configures the PCMCIA socket -- setting up the I/O
1994          * windows and the interrupt mapping.  */
1995
1996         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1997
1998         dev->irq = link->irq.AssignedIRQ;
1999         dev->base_addr = link->io.BasePort1;
2000         SET_NETDEV_DEV(dev, &handle_to_dev(link));
2001         if (register_netdev(dev)) {
2002                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
2003                 goto failed;
2004         }
2005
2006         this = netdev_priv(dev);
2007         /*
2008          * At this point, the dev_node_t structure(s) should be initialized and
2009          * arranged in a linked list at link->dev_node.
2010          */
2011         link->dev_node = &this->node;
2012
2013         this->base_addr = dev->base_addr;
2014
2015         if (!wl3501_get_flash_mac_addr(this)) {
2016                 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
2017                        dev->name);
2018                 goto failed;
2019         }
2020         strcpy(this->node.dev_name, dev->name);
2021
2022         for (i = 0; i < 6; i++)
2023                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
2024
2025         /* print probe information */
2026         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
2027                "MAC addr in flash ROM:%s\n",
2028                dev->name, this->base_addr, (int)dev->irq,
2029                print_mac(mac, dev->dev_addr));
2030         /*
2031          * Initialize card parameters - added by jss
2032          */
2033         this->net_type          = IW_MODE_INFRA;
2034         this->bss_cnt           = 0;
2035         this->join_sta_bss      = 0;
2036         this->adhoc_times       = 0;
2037         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2038                                  "ANY", 3);
2039         this->card_name[0]      = '\0';
2040         this->firmware_date[0]  = '\0';
2041         this->rssi              = 255;
2042         this->chan              = iw_default_channel(this->reg_domain);
2043         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2044         spin_lock_init(&this->lock);
2045         init_waitqueue_head(&this->wait);
2046         netif_start_queue(dev);
2047         return 0;
2048
2049 cs_failed:
2050         cs_error(link, last_fn, last_ret);
2051 failed:
2052         wl3501_release(link);
2053         return -ENODEV;
2054 }
2055
2056 /**
2057  * wl3501_release - unregister the net, release PCMCIA configuration
2058  * @arg - link
2059  *
2060  * After a card is removed, wl3501_release() will unregister the net device,
2061  * and release the PCMCIA configuration.  If the device is still open, this
2062  * will be postponed until it is closed.
2063  */
2064 static void wl3501_release(struct pcmcia_device *link)
2065 {
2066         struct net_device *dev = link->priv;
2067
2068         /* Unlink the device chain */
2069         if (link->dev_node)
2070                 unregister_netdev(dev);
2071
2072         pcmcia_disable_device(link);
2073 }
2074
2075 static int wl3501_suspend(struct pcmcia_device *link)
2076 {
2077         struct net_device *dev = link->priv;
2078
2079         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
2080         if (link->open)
2081                 netif_device_detach(dev);
2082
2083         return 0;
2084 }
2085
2086 static int wl3501_resume(struct pcmcia_device *link)
2087 {
2088         struct net_device *dev = link->priv;
2089
2090         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2091         if (link->open) {
2092                 wl3501_reset(dev);
2093                 netif_device_attach(dev);
2094         }
2095
2096         return 0;
2097 }
2098
2099
2100 static struct pcmcia_device_id wl3501_ids[] = {
2101         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2102         PCMCIA_DEVICE_NULL
2103 };
2104 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2105
2106 static struct pcmcia_driver wl3501_driver = {
2107         .owner          = THIS_MODULE,
2108         .drv            = {
2109                 .name   = "wl3501_cs",
2110         },
2111         .probe          = wl3501_probe,
2112         .remove         = wl3501_detach,
2113         .id_table       = wl3501_ids,
2114         .suspend        = wl3501_suspend,
2115         .resume         = wl3501_resume,
2116 };
2117
2118 static int __init wl3501_init_module(void)
2119 {
2120         return pcmcia_register_driver(&wl3501_driver);
2121 }
2122
2123 static void __exit wl3501_exit_module(void)
2124 {
2125         pcmcia_unregister_driver(&wl3501_driver);
2126 }
2127
2128 module_init(wl3501_init_module);
2129 module_exit(wl3501_exit_module);
2130
2131 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2132               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2133               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2134 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2135 MODULE_LICENSE("GPL");