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 #undef REALLY_SLOW_IO   /* most systems can safely undef this */
  30
  31 #include <linux/delay.h>
  32 #include <linux/types.h>
  33 #include <linux/ethtool.h>
  34 #include <linux/init.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/in.h>
  37 #include <linux/kernel.h>
  38 #include <linux/module.h>
  39 #include <linux/fcntl.h>
  40 #include <linux/if_arp.h>
  41 #include <linux/ioport.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/etherdevice.h>
  44 #include <linux/skbuff.h>
  45 #include <linux/slab.h>
  46 #include <linux/string.h>
  47 #include <linux/wireless.h>
  48
  49 #include <net/iw_handler.h>
  50
  51 #include <pcmcia/cs_types.h>
  52 #include <pcmcia/cs.h>
  53 #include <pcmcia/cistpl.h>
  54 #include <pcmcia/cisreg.h>
  55 #include <pcmcia/ds.h>
  56
  57 #include <asm/io.h>
  58 #include <asm/uaccess.h>
  59 #include <asm/system.h>
  60
  61 #include "wl3501.h"
  62
  63 #ifndef __i386__
  64 #define slow_down_io()
  65 #endif
  66
  67 /* For rough constant delay */
  68 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  69
  70 /*
  71  * All the PCMCIA modules use PCMCIA_DEBUG to control debugging.  If you do not
  72  * define PCMCIA_DEBUG at all, all the debug code will be left out.  If you
  73  * compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
  74  * but it can then be enabled for specific modules at load time with a
  75  * 'pc_debug=#' option to insmod.
  76  */
  77 #define PCMCIA_DEBUG 0
  78 #ifdef PCMCIA_DEBUG
  79 static int pc_debug = PCMCIA_DEBUG;
  80 module_param(pc_debug, int, 0);
  81 #define dprintk(n, format, args...) \
  82         { if (pc_debug > (n)) \
  83                 printk(KERN_INFO "%s: " format "\n", __FUNCTION__ , ##args); }
  84 #else
  85 #define dprintk(n, format, args...)
  86 #endif
  87
  88 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  89 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  90 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  91
  92 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  93 #define WL3501_MAX_ADHOC_TRIES 16
  94
  95 #define WL3501_RESUME   0
  96 #define WL3501_SUSPEND  1
  97
  98 /*
  99  * The event() function is this driver's Card Services event handler.  It will
 100  * be called by Card Services when an appropriate card status event is
 101  * received. The config() and release() entry points are used to configure or
 102  * release a socket, in response to card insertion and ejection events.  They
 103  * are invoked from the wl24 event handler.
 104  */
 105 static int wl3501_config(struct pcmcia_device *link);
 106 static void wl3501_release(struct pcmcia_device *link);
 107
 108 /*
 109  * The dev_info variable is the "key" that is used to match up this
 110  * device driver with appropriate cards, through the card configuration
 111  * database.
 112  */
 113 static dev_info_t wl3501_dev_info = "wl3501_cs";
 114
 115 static int wl3501_chan2freq[] = {
 116         [0]  = 2412, [1]  = 2417, [2]  = 2422, [3]  = 2427, [4] = 2432,
 117         [5]  = 2437, [6]  = 2442, [7]  = 2447, [8]  = 2452, [9] = 2457,
 118         [10] = 2462, [11] = 2467, [12] = 2472, [13] = 2477,
 119 };
 120
 121 static const struct {
 122         int reg_domain;
 123         int min, max, deflt;
 124 } iw_channel_table[] = {
 125         {
 126                 .reg_domain = IW_REG_DOMAIN_FCC,
 127                 .min        = 1,
 128                 .max        = 11,
 129                 .deflt      = 1,
 130         },
 131         {
 132                 .reg_domain = IW_REG_DOMAIN_DOC,
 133                 .min        = 1,
 134                 .max        = 11,
 135                 .deflt      = 1,
 136         },
 137         {
 138                 .reg_domain = IW_REG_DOMAIN_ETSI,
 139                 .min        = 1,
 140                 .max        = 13,
 141                 .deflt      = 1,
 142         },
 143         {
 144                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 145                 .min        = 10,
 146                 .max        = 11,
 147                 .deflt      = 10,
 148         },
 149         {
 150                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 151                 .min        = 10,
 152                 .max        = 13,
 153                 .deflt      = 10,
 154         },
 155         {
 156                 .reg_domain = IW_REG_DOMAIN_MKK,
 157                 .min        = 14,
 158                 .max        = 14,
 159                 .deflt      = 14,
 160         },
 161         {
 162                 .reg_domain = IW_REG_DOMAIN_MKK1,
 163                 .min        = 1,
 164                 .max        = 14,
 165                 .deflt      = 1,
 166         },
 167         {
 168                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 169                 .min        = 3,
 170                 .max        = 9,
 171                 .deflt      = 9,
 172         },
 173 };
 174
 175 /**
 176  * iw_valid_channel - validate channel in regulatory domain
 177  * @reg_comain - regulatory domain
 178  * @channel - channel to validate
 179  *
 180  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 181  */
 182 static int iw_valid_channel(int reg_domain, int channel)
 183 {
 184         int i, rc = 0;
 185
 186         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 187                 if (reg_domain == iw_channel_table[i].reg_domain) {
 188                         rc = channel >= iw_channel_table[i].min &&
 189                              channel <= iw_channel_table[i].max;
 190                         break;
 191                 }
 192         return rc;
 193 }
 194
 195 /**
 196  * iw_default_channel - get default channel for a regulatory domain
 197  * @reg_comain - regulatory domain
 198  *
 199  * Returns the default channel for a regulatory domain
 200  */
 201 static int iw_default_channel(int reg_domain)
 202 {
 203         int i, rc = 1;
 204
 205         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 206                 if (reg_domain == iw_channel_table[i].reg_domain) {
 207                         rc = iw_channel_table[i].deflt;
 208                         break;
 209                 }
 210         return rc;
 211 }
 212
 213 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 214                                      struct iw_mgmt_info_element *el,
 215                                      void *value, int len)
 216 {
 217         el->id  = id;
 218         el->len = len;
 219         memcpy(el->data, value, len);
 220 }
 221
 222 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 223                                       struct iw_mgmt_info_element *from)
 224 {
 225         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 226 }
 227
 228 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 229 {
 230         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 231 }
 232
 233 /*
 234  * Get Ethernet MAC addresss.
 235  *
 236  * WARNING: We switch to FPAGE0 and switc back again.
 237  *          Making sure there is no other WL function beening called by ISR.
 238  */
 239 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 240 {
 241         int base_addr = this->base_addr;
 242
 243         /* get MAC addr */
 244         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 245         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 246         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 247
 248         /* wait for reading EEPROM */
 249         WL3501_NOPLOOP(100);
 250         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 251         WL3501_NOPLOOP(100);
 252         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 253         WL3501_NOPLOOP(100);
 254         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 255         WL3501_NOPLOOP(100);
 256         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 257         WL3501_NOPLOOP(100);
 258         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 259         WL3501_NOPLOOP(100);
 260         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 261         WL3501_NOPLOOP(100);
 262         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 263         WL3501_NOPLOOP(100);
 264         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 265         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 266         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 267         WL3501_NOPLOOP(100);
 268         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 269         WL3501_NOPLOOP(100);
 270         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 271         /* switch to SRAM Page 0 (for safety) */
 272         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 273
 274         /* The MAC addr should be 00:60:... */
 275         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 276 }
 277
 278 /**
 279  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 280  * @dest: Card addressing space
 281  * @src: PC addressing space
 282  * @size: Bytes to move
 283  *
 284  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 285  */
 286 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 287                               int size)
 288 {
 289         /* switch to SRAM Page 0 */
 290         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 291                                                    WL3501_BSS_SPAGE0);
 292         /* set LMAL and LMAH */
 293         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 294         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 295
 296         /* rep out to Port A */
 297         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 298 }
 299
 300 /**
 301  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 302  * @src: Card addressing space
 303  * @dest: PC addressing space
 304  * @size: Bytes to move
 305  *
 306  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 307  */
 308 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 309                                 int size)
 310 {
 311         /* switch to SRAM Page 0 */
 312         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 313                                                   WL3501_BSS_SPAGE0);
 314         /* set LMAL and LMAH */
 315         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 316         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 317
 318         /* rep get from Port A */
 319         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 320 }
 321
 322 /*
 323  * Get/Allocate a free Tx Data Buffer
 324  *
 325  *  *--------------*-----------------*----------------------------------*
 326  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 327  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 328  *  *--------------*-----------------*----------------------------------*
 329  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 330  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 331  *
 332  * Return = Postion in Card
 333  */
 334 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 335 {
 336         u16 next, blk_cnt = 0, zero = 0;
 337         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 338         u16 ret = 0;
 339
 340         if (full_len > this->tx_buffer_cnt * 254)
 341                 goto out;
 342         ret = this->tx_buffer_head;
 343         while (full_len) {
 344                 if (full_len < 254)
 345                         full_len = 0;
 346                 else
 347                         full_len -= 254;
 348                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 349                                     sizeof(next));
 350                 if (!full_len)
 351                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 352                                           sizeof(zero));
 353                 this->tx_buffer_head = next;
 354                 blk_cnt++;
 355                 /* if buffer is not enough */
 356                 if (!next && full_len) {
 357                         this->tx_buffer_head = ret;
 358                         ret = 0;
 359                         goto out;
 360                 }
 361         }
 362         this->tx_buffer_cnt -= blk_cnt;
 363 out:
 364         return ret;
 365 }
 366
 367 /*
 368  * Free an allocated Tx Buffer. ptr must be correct position.
 369  */
 370 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 371 {
 372         /* check if all space is not free */
 373         if (!this->tx_buffer_head)
 374                 this->tx_buffer_head = ptr;
 375         else
 376                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 377                                   &ptr, sizeof(ptr));
 378         while (ptr) {
 379                 u16 next;
 380
 381                 this->tx_buffer_cnt++;
 382                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 383                 this->tx_buffer_tail = ptr;
 384                 ptr = next;
 385         }
 386 }
 387
 388 static int wl3501_esbq_req_test(struct wl3501_card *this)
 389 {
 390         u8 tmp;
 391
 392         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 393         return tmp & 0x80;
 394 }
 395
 396 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 397 {
 398         u16 tmp = 0;
 399
 400         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 401         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 402         this->esbq_req_head += 4;
 403         if (this->esbq_req_head >= this->esbq_req_end)
 404                 this->esbq_req_head = this->esbq_req_start;
 405 }
 406
 407 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 408 {
 409         int rc = -EIO;
 410
 411         if (wl3501_esbq_req_test(this)) {
 412                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 413                 if (ptr) {
 414                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 415                         wl3501_esbq_req(this, &ptr);
 416                         rc = 0;
 417                 }
 418         }
 419         return rc;
 420 }
 421
 422 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 423                                 void *bf, int size)
 424 {
 425         struct wl3501_get_req sig = {
 426                 .sig_id     = WL3501_SIG_GET_REQ,
 427                 .mib_attrib = index,
 428         };
 429         unsigned long flags;
 430         int rc = -EIO;
 431
 432         spin_lock_irqsave(&this->lock, flags);
 433         if (wl3501_esbq_req_test(this)) {
 434                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 435                 if (ptr) {
 436                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 437                         wl3501_esbq_req(this, &ptr);
 438                         this->sig_get_confirm.mib_status = 255;
 439                         spin_unlock_irqrestore(&this->lock, flags);
 440                         rc = wait_event_interruptible(this->wait,
 441                                 this->sig_get_confirm.mib_status != 255);
 442                         if (!rc)
 443                                 memcpy(bf, this->sig_get_confirm.mib_value,
 444                                        size);
 445                         goto out;
 446                 }
 447         }
 448         spin_unlock_irqrestore(&this->lock, flags);
 449 out:
 450         return rc;
 451 }
 452
 453 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 454 {
 455         struct wl3501_pwr_mgmt_req sig = {
 456                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 457                 .pwr_save       = suspend,
 458                 .wake_up        = !suspend,
 459                 .receive_dtims  = 10,
 460         };
 461         unsigned long flags;
 462         int rc = -EIO;
 463
 464         spin_lock_irqsave(&this->lock, flags);
 465         if (wl3501_esbq_req_test(this)) {
 466                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 467                 if (ptr) {
 468                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 469                         wl3501_esbq_req(this, &ptr);
 470                         this->sig_pwr_mgmt_confirm.status = 255;
 471                         spin_unlock_irqrestore(&this->lock, flags);
 472                         rc = wait_event_interruptible(this->wait,
 473                                 this->sig_pwr_mgmt_confirm.status != 255);
 474                         printk(KERN_INFO "%s: %s status=%d\n", __FUNCTION__,
 475                                suspend ? "suspend" : "resume",
 476                                this->sig_pwr_mgmt_confirm.status);
 477                         goto out;
 478                 }
 479         }
 480         spin_unlock_irqrestore(&this->lock, flags);
 481 out:
 482         return rc;
 483 }
 484
 485 /**
 486  * wl3501_send_pkt - Send a packet.
 487  * @this - card
 488  *
 489  * Send a packet.
 490  *
 491  * data = Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 492  *                                   data[6] - data[11] is Src MAC Addr)
 493  * Ref: IEEE 802.11
 494  */
 495 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 496 {
 497         u16 bf, sig_bf, next, tmplen, pktlen;
 498         struct wl3501_md_req sig = {
 499                 .sig_id = WL3501_SIG_MD_REQ,
 500         };
 501         u8 *pdata = (char *)data;
 502         int rc = -EIO;
 503
 504         if (wl3501_esbq_req_test(this)) {
 505                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 506                 rc = -ENOMEM;
 507                 if (!sig_bf)    /* No free buffer available */
 508                         goto out;
 509                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 510                 if (!bf) {
 511                         /* No free buffer available */
 512                         wl3501_free_tx_buffer(this, sig_bf);
 513                         goto out;
 514                 }
 515                 rc = 0;
 516                 memcpy(&sig.daddr[0], pdata, 12);
 517                 pktlen = len - 12;
 518                 pdata += 12;
 519                 sig.data = bf;
 520                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 521                         u8 addr4[ETH_ALEN] = {
 522                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 523                         };
 524
 525                         wl3501_set_to_wla(this, bf + 2 +
 526                                           offsetof(struct wl3501_tx_hdr, addr4),
 527                                           addr4, sizeof(addr4));
 528                         sig.size = pktlen + 24 + 4 + 6;
 529                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 530                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 531                                 pktlen -= tmplen;
 532                         } else {
 533                                 tmplen = pktlen;
 534                                 pktlen = 0;
 535                         }
 536                         wl3501_set_to_wla(this,
 537                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 538                                           pdata, tmplen);
 539                         pdata += tmplen;
 540                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 541                         bf = next;
 542                 } else {
 543                         sig.size = pktlen + 24 + 4 - 2;
 544                         pdata += 2;
 545                         pktlen -= 2;
 546                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 547                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 548                                 pktlen -= tmplen;
 549                         } else {
 550                                 tmplen = pktlen;
 551                                 pktlen = 0;
 552                         }
 553                         wl3501_set_to_wla(this, bf + 2 +
 554                                           offsetof(struct wl3501_tx_hdr, addr4),
 555                                           pdata, tmplen);
 556                         pdata += tmplen;
 557                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 558                         bf = next;
 559                 }
 560                 while (pktlen > 0) {
 561                         if (pktlen > 254) {
 562                                 tmplen = 254;
 563                                 pktlen -= 254;
 564                         } else {
 565                                 tmplen = pktlen;
 566                                 pktlen = 0;
 567                         }
 568                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 569                         pdata += tmplen;
 570                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 571                         bf = next;
 572                 }
 573                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 574                 wl3501_esbq_req(this, &sig_bf);
 575         }
 576 out:
 577         return rc;
 578 }
 579
 580 static int wl3501_mgmt_resync(struct wl3501_card *this)
 581 {
 582         struct wl3501_resync_req sig = {
 583                 .sig_id = WL3501_SIG_RESYNC_REQ,
 584         };
 585
 586         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 587 }
 588
 589 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 590 {
 591         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 592                                                  WL3501_NET_TYPE_ADHOC;
 593 }
 594
 595 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 596 {
 597         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 598                                                  WL3501_MGMT_CAPABILITY_IBSS;
 599 }
 600
 601 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 602 {
 603         struct wl3501_scan_req sig = {
 604                 .sig_id         = WL3501_SIG_SCAN_REQ,
 605                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 606                 .probe_delay    = 0x10,
 607                 .min_chan_time  = chan_time,
 608                 .max_chan_time  = chan_time,
 609                 .bss_type       = wl3501_fw_bss_type(this),
 610         };
 611
 612         this->bss_cnt = this->join_sta_bss = 0;
 613         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 614 }
 615
 616 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 617 {
 618         struct wl3501_join_req sig = {
 619                 .sig_id           = WL3501_SIG_JOIN_REQ,
 620                 .timeout          = 10,
 621                 .ds_pset = {
 622                         .el = {
 623                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 624                                 .len = 1,
 625                         },
 626                         .chan   = this->chan,
 627                 },
 628         };
 629
 630         memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
 631         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 632 }
 633
 634 static int wl3501_mgmt_start(struct wl3501_card *this)
 635 {
 636         struct wl3501_start_req sig = {
 637                 .sig_id                 = WL3501_SIG_START_REQ,
 638                 .beacon_period          = 400,
 639                 .dtim_period            = 1,
 640                 .ds_pset = {
 641                         .el = {
 642                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 643                                 .len = 1,
 644                         },
 645                         .chan   = this->chan,
 646                 },
 647                 .bss_basic_rset = {
 648                         .el = {
 649                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 650                                 .len = 2,
 651                         },
 652                         .data_rate_labels = {
 653                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 654                                       IW_MGMT_RATE_LABEL_1MBIT,
 655                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 656                                       IW_MGMT_RATE_LABEL_2MBIT,
 657                         },
 658                 },
 659                 .operational_rset       = {
 660                         .el = {
 661                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 662                                 .len = 2,
 663                         },
 664                         .data_rate_labels = {
 665                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 666                                       IW_MGMT_RATE_LABEL_1MBIT,
 667                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 668                                       IW_MGMT_RATE_LABEL_2MBIT,
 669                         },
 670                 },
 671                 .ibss_pset              = {
 672                         .el = {
 673                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 674                                 .len     = 2,
 675                         },
 676                         .atim_window = 10,
 677                 },
 678                 .bss_type               = wl3501_fw_bss_type(this),
 679                 .cap_info               = wl3501_fw_cap_info(this),
 680         };
 681
 682         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 683         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 684         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 685 }
 686
 687 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 688 {
 689         u16 i = 0;
 690         int matchflag = 0;
 691         struct wl3501_scan_confirm sig;
 692
 693         dprintk(3, "entry");
 694         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 695         if (sig.status == WL3501_STATUS_SUCCESS) {
 696                 dprintk(3, "success");
 697                 if ((this->net_type == IW_MODE_INFRA &&
 698                      (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 699                     (this->net_type == IW_MODE_ADHOC &&
 700                      (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 701                     this->net_type == IW_MODE_AUTO) {
 702                         if (!this->essid.el.len)
 703                                 matchflag = 1;
 704                         else if (this->essid.el.len == 3 &&
 705                                  !memcmp(this->essid.essid, "ANY", 3))
 706                                 matchflag = 1;
 707                         else if (this->essid.el.len != sig.ssid.el.len)
 708                                 matchflag = 0;
 709                         else if (memcmp(this->essid.essid, sig.ssid.essid,
 710                                         this->essid.el.len))
 711                                 matchflag = 0;
 712                         else
 713                                 matchflag = 1;
 714                         if (matchflag) {
 715                                 for (i = 0; i < this->bss_cnt; i++) {
 716                                         if (!memcmp(this->bss_set[i].bssid,
 717                                                     sig.bssid, ETH_ALEN)) {
 718                                                 matchflag = 0;
 719                                                 break;
 720                                         }
 721                                 }
 722                         }
 723                         if (matchflag && (i < 20)) {
 724                                 memcpy(&this->bss_set[i].beacon_period,
 725                                        &sig.beacon_period, 73);
 726                                 this->bss_cnt++;
 727                                 this->rssi = sig.rssi;
 728                         }
 729                 }
 730         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 731                 dprintk(3, "timeout");
 732                 this->join_sta_bss = 0;
 733                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 734                         if (!wl3501_mgmt_join(this, i))
 735                                 break;
 736                 this->join_sta_bss = i;
 737                 if (this->join_sta_bss == this->bss_cnt) {
 738                         if (this->net_type == IW_MODE_INFRA)
 739                                 wl3501_mgmt_scan(this, 100);
 740                         else {
 741                                 this->adhoc_times++;
 742                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 743                                         wl3501_mgmt_start(this);
 744                                 else
 745                                         wl3501_mgmt_scan(this, 100);
 746                         }
 747                 }
 748         }
 749 }
 750
 751 /**
 752  * wl3501_block_interrupt - Mask interrupt from SUTRO
 753  * @this - card
 754  *
 755  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 756  * Return: 1 if interrupt is originally enabled
 757  */
 758 static int wl3501_block_interrupt(struct wl3501_card *this)
 759 {
 760         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 761         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 762                         WL3501_GCR_ENECINT));
 763
 764         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 765         return old & WL3501_GCR_ENECINT;
 766 }
 767
 768 /**
 769  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 770  * @this - card
 771  *
 772  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 773  * Return: 1 if interrupt is originally enabled
 774  */
 775 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 776 {
 777         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 778         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 779                   WL3501_GCR_ENECINT;
 780
 781         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 782         return old & WL3501_GCR_ENECINT;
 783 }
 784
 785 /**
 786  * wl3501_receive - Receive data from Receive Queue.
 787  *
 788  * Receive data from Receive Queue.
 789  *
 790  * @this: card
 791  * @bf: address of host
 792  * @size: size of buffer.
 793  */
 794 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 795 {
 796         u16 next_addr, next_addr1;
 797         u8 *data = bf + 12;
 798
 799         size -= 12;
 800         wl3501_get_from_wla(this, this->start_seg + 2,
 801                             &next_addr, sizeof(next_addr));
 802         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 803                 wl3501_get_from_wla(this,
 804                                     this->start_seg +
 805                                         sizeof(struct wl3501_rx_hdr), data,
 806                                     WL3501_BLKSZ -
 807                                         sizeof(struct wl3501_rx_hdr));
 808                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 809                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 810         } else {
 811                 wl3501_get_from_wla(this,
 812                                     this->start_seg +
 813                                         sizeof(struct wl3501_rx_hdr),
 814                                     data, size);
 815                 size = 0;
 816         }
 817         while (size > 0) {
 818                 if (size > WL3501_BLKSZ - 5) {
 819                         wl3501_get_from_wla(this, next_addr + 5, data,
 820                                             WL3501_BLKSZ - 5);
 821                         size -= WL3501_BLKSZ - 5;
 822                         data += WL3501_BLKSZ - 5;
 823                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 824                                             sizeof(next_addr1));
 825                         next_addr = next_addr1;
 826                 } else {
 827                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 828                         size = 0;
 829                 }
 830         }
 831         return 0;
 832 }
 833
 834 static void wl3501_esbq_req_free(struct wl3501_card *this)
 835 {
 836         u8 tmp;
 837         u16 addr;
 838
 839         if (this->esbq_req_head == this->esbq_req_tail)
 840                 goto out;
 841         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 842         if (!(tmp & 0x80))
 843                 goto out;
 844         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 845         wl3501_free_tx_buffer(this, addr);
 846         this->esbq_req_tail += 4;
 847         if (this->esbq_req_tail >= this->esbq_req_end)
 848                 this->esbq_req_tail = this->esbq_req_start;
 849 out:
 850         return;
 851 }
 852
 853 static int wl3501_esbq_confirm(struct wl3501_card *this)
 854 {
 855         u8 tmp;
 856
 857         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 858         return tmp & 0x80;
 859 }
 860
 861 static void wl3501_online(struct net_device *dev)
 862 {
 863         struct wl3501_card *this = dev->priv;
 864
 865         printk(KERN_INFO "%s: Wireless LAN online. BSSID: "
 866                "%02X %02X %02X %02X %02X %02X\n", dev->name,
 867                this->bssid[0], this->bssid[1], this->bssid[2],
 868                this->bssid[3], this->bssid[4], this->bssid[5]);
 869         netif_wake_queue(dev);
 870 }
 871
 872 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 873 {
 874         u8 tmp = 0;
 875
 876         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 877         this->esbq_confirm += 4;
 878         if (this->esbq_confirm >= this->esbq_confirm_end)
 879                 this->esbq_confirm = this->esbq_confirm_start;
 880 }
 881
 882 static int wl3501_mgmt_auth(struct wl3501_card *this)
 883 {
 884         struct wl3501_auth_req sig = {
 885                 .sig_id  = WL3501_SIG_AUTH_REQ,
 886                 .type    = WL3501_SYS_TYPE_OPEN,
 887                 .timeout = 1000,
 888         };
 889
 890         dprintk(3, "entry");
 891         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 892         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 893 }
 894
 895 static int wl3501_mgmt_association(struct wl3501_card *this)
 896 {
 897         struct wl3501_assoc_req sig = {
 898                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 899                 .timeout         = 1000,
 900                 .listen_interval = 5,
 901                 .cap_info        = this->cap_info,
 902         };
 903
 904         dprintk(3, "entry");
 905         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 906         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 907 }
 908
 909 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 910 {
 911         struct wl3501_card *this = dev->priv;
 912         struct wl3501_join_confirm sig;
 913
 914         dprintk(3, "entry");
 915         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 916         if (sig.status == WL3501_STATUS_SUCCESS) {
 917                 if (this->net_type == IW_MODE_INFRA) {
 918                         if (this->join_sta_bss < this->bss_cnt) {
 919                                 const int i = this->join_sta_bss;
 920                                 memcpy(this->bssid,
 921                                        this->bss_set[i].bssid, ETH_ALEN);
 922                                 this->chan = this->bss_set[i].ds_pset.chan;
 923                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 924                                                      &this->bss_set[i].ssid.el);
 925                                 wl3501_mgmt_auth(this);
 926                         }
 927                 } else {
 928                         const int i = this->join_sta_bss;
 929
 930                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 931                         this->chan = this->bss_set[i].ds_pset.chan;
 932                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 933                                                   &this->bss_set[i].ssid.el);
 934                         wl3501_online(dev);
 935                 }
 936         } else {
 937                 int i;
 938                 this->join_sta_bss++;
 939                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 940                         if (!wl3501_mgmt_join(this, i))
 941                                 break;
 942                 this->join_sta_bss = i;
 943                 if (this->join_sta_bss == this->bss_cnt) {
 944                         if (this->net_type == IW_MODE_INFRA)
 945                                 wl3501_mgmt_scan(this, 100);
 946                         else {
 947                                 this->adhoc_times++;
 948                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 949                                         wl3501_mgmt_start(this);
 950                                 else
 951                                         wl3501_mgmt_scan(this, 100);
 952                         }
 953                 }
 954         }
 955 }
 956
 957 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 958                                           struct wl3501_card *this)
 959 {
 960         if (this->net_type == IW_MODE_INFRA) {
 961                 printk(KERN_INFO "Wireless LAN offline\n");
 962                 netif_stop_queue(dev);
 963                 wl3501_mgmt_resync(this);
 964         }
 965 }
 966
 967 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 968                                                struct wl3501_card *this,
 969                                                u16 addr)
 970 {
 971         struct wl3501_md_confirm sig;
 972
 973         dprintk(3, "entry");
 974         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 975         wl3501_free_tx_buffer(this, sig.data);
 976         if (netif_queue_stopped(dev))
 977                 netif_wake_queue(dev);
 978 }
 979
 980 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 981                                            struct wl3501_card *this, u16 addr)
 982 {
 983         struct wl3501_md_ind sig;
 984         struct sk_buff *skb;
 985         u8 rssi, addr4[ETH_ALEN];
 986         u16 pkt_len;
 987
 988         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 989         this->start_seg = sig.data;
 990         wl3501_get_from_wla(this,
 991                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 992                             &rssi, sizeof(rssi));
 993         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 994
 995         wl3501_get_from_wla(this,
 996                             sig.data +
 997                                 offsetof(struct wl3501_rx_hdr, addr4),
 998                             &addr4, sizeof(addr4));
 999         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
1000               addr4[2] == 0x03 && addr4[4] == 0x00)) {
1001                 printk(KERN_INFO "Insupported packet type!\n");
1002                 return;
1003         }
1004         pkt_len = sig.size + 12 - 24 - 4 - 6;
1005
1006         skb = dev_alloc_skb(pkt_len + 5);
1007
1008         if (!skb) {
1009                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
1010                        dev->name, pkt_len);
1011                 this->stats.rx_dropped++;
1012         } else {
1013                 skb->dev = dev;
1014                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
1015                 eth_copy_and_sum(skb, (unsigned char *)&sig.daddr, 12, 0);
1016                 wl3501_receive(this, skb->data, pkt_len);
1017                 skb_put(skb, pkt_len);
1018                 skb->protocol   = eth_type_trans(skb, dev);
1019                 dev->last_rx    = jiffies;
1020                 this->stats.rx_packets++;
1021                 this->stats.rx_bytes += skb->len;
1022                 netif_rx(skb);
1023         }
1024 }
1025
1026 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1027                                                 u16 addr, void *sig, int size)
1028 {
1029         dprintk(3, "entry");
1030         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1031                             sizeof(this->sig_get_confirm));
1032         wake_up(&this->wait);
1033 }
1034
1035 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1036                                                   struct wl3501_card *this,
1037                                                   u16 addr)
1038 {
1039         struct wl3501_start_confirm sig;
1040
1041         dprintk(3, "entry");
1042         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1043         if (sig.status == WL3501_STATUS_SUCCESS)
1044                 netif_wake_queue(dev);
1045 }
1046
1047 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1048                                                   u16 addr)
1049 {
1050         struct wl3501_card *this = dev->priv;
1051         struct wl3501_assoc_confirm sig;
1052
1053         dprintk(3, "entry");
1054         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1055
1056         if (sig.status == WL3501_STATUS_SUCCESS)
1057                 wl3501_online(dev);
1058 }
1059
1060 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1061                                                  u16 addr)
1062 {
1063         struct wl3501_auth_confirm sig;
1064
1065         dprintk(3, "entry");
1066         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1067
1068         if (sig.status == WL3501_STATUS_SUCCESS)
1069                 wl3501_mgmt_association(this);
1070         else
1071                 wl3501_mgmt_resync(this);
1072 }
1073
1074 static inline void wl3501_rx_interrupt(struct net_device *dev)
1075 {
1076         int morepkts;
1077         u16 addr;
1078         u8 sig_id;
1079         struct wl3501_card *this = dev->priv;
1080
1081         dprintk(3, "entry");
1082 loop:
1083         morepkts = 0;
1084         if (!wl3501_esbq_confirm(this))
1085                 goto free;
1086         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1087         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1088
1089         switch (sig_id) {
1090         case WL3501_SIG_DEAUTH_IND:
1091         case WL3501_SIG_DISASSOC_IND:
1092         case WL3501_SIG_ALARM:
1093                 wl3501_alarm_interrupt(dev, this);
1094                 break;
1095         case WL3501_SIG_MD_CONFIRM:
1096                 wl3501_md_confirm_interrupt(dev, this, addr);
1097                 break;
1098         case WL3501_SIG_MD_IND:
1099                 wl3501_md_ind_interrupt(dev, this, addr);
1100                 break;
1101         case WL3501_SIG_GET_CONFIRM:
1102                 wl3501_get_confirm_interrupt(this, addr,
1103                                              &this->sig_get_confirm,
1104                                              sizeof(this->sig_get_confirm));
1105                 break;
1106         case WL3501_SIG_PWR_MGMT_CONFIRM:
1107                 wl3501_get_confirm_interrupt(this, addr,
1108                                              &this->sig_pwr_mgmt_confirm,
1109                                             sizeof(this->sig_pwr_mgmt_confirm));
1110                 break;
1111         case WL3501_SIG_START_CONFIRM:
1112                 wl3501_start_confirm_interrupt(dev, this, addr);
1113                 break;
1114         case WL3501_SIG_SCAN_CONFIRM:
1115                 wl3501_mgmt_scan_confirm(this, addr);
1116                 break;
1117         case WL3501_SIG_JOIN_CONFIRM:
1118                 wl3501_mgmt_join_confirm(dev, addr);
1119                 break;
1120         case WL3501_SIG_ASSOC_CONFIRM:
1121                 wl3501_assoc_confirm_interrupt(dev, addr);
1122                 break;
1123         case WL3501_SIG_AUTH_CONFIRM:
1124                 wl3501_auth_confirm_interrupt(this, addr);
1125                 break;
1126         case WL3501_SIG_RESYNC_CONFIRM:
1127                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1128                 break;
1129         }
1130         wl3501_esbq_confirm_done(this);
1131         morepkts = 1;
1132         /* free request if necessary */
1133 free:
1134         wl3501_esbq_req_free(this);
1135         if (morepkts)
1136                 goto loop;
1137 }
1138
1139 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1140 {
1141         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1142 }
1143
1144 /**
1145  * wl3501_interrupt - Hardware interrupt from card.
1146  * @irq - Interrupt number
1147  * @dev_id - net_device
1148  *
1149  * We must acknowledge the interrupt as soon as possible, and block the
1150  * interrupt from the same card immediately to prevent re-entry.
1151  *
1152  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1153  * On the other hand, to prevent SUTRO from malfunctioning, we must
1154  * unlock the SUTRO as soon as possible.
1155  */
1156 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1157 {
1158         struct net_device *dev = dev_id;
1159         struct wl3501_card *this;
1160
1161         this = netdev_priv(dev);
1162         spin_lock(&this->lock);
1163         wl3501_ack_interrupt(this);
1164         wl3501_block_interrupt(this);
1165         wl3501_rx_interrupt(dev);
1166         wl3501_unblock_interrupt(this);
1167         spin_unlock(&this->lock);
1168
1169         return IRQ_HANDLED;
1170 }
1171
1172 static int wl3501_reset_board(struct wl3501_card *this)
1173 {
1174         u8 tmp = 0;
1175         int i, rc = 0;
1176
1177         /* Coreset */
1178         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1179         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1180         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1181
1182         /* Reset SRAM 0x480 to zero */
1183         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1184
1185         /* Start up */
1186         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1187
1188         WL3501_NOPLOOP(1024 * 50);
1189
1190         wl3501_unblock_interrupt(this); /* acme: was commented */
1191
1192         /* Polling Self_Test_Status */
1193         for (i = 0; i < 10000; i++) {
1194                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1195
1196                 if (tmp == 'W') {
1197                         /* firmware complete all test successfully */
1198                         tmp = 'A';
1199                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1200                         goto out;
1201                 }
1202                 WL3501_NOPLOOP(10);
1203         }
1204         printk(KERN_WARNING "%s: failed to reset the board!\n", __FUNCTION__);
1205         rc = -ENODEV;
1206 out:
1207         return rc;
1208 }
1209
1210 static int wl3501_init_firmware(struct wl3501_card *this)
1211 {
1212         u16 ptr, next;
1213         int rc = wl3501_reset_board(this);
1214
1215         if (rc)
1216                 goto fail;
1217         this->card_name[0] = '\0';
1218         wl3501_get_from_wla(this, 0x1a00,
1219                             this->card_name, sizeof(this->card_name));
1220         this->card_name[sizeof(this->card_name) - 1] = '\0';
1221         this->firmware_date[0] = '\0';
1222         wl3501_get_from_wla(this, 0x1a40,
1223                             this->firmware_date, sizeof(this->firmware_date));
1224         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1225         /* Switch to SRAM Page 0 */
1226         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1227         /* Read parameter from card */
1228         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1229         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1230         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1231         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1232         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1233         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1234         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1235         this->esbq_req_end     += this->esbq_req_start;
1236         this->esbq_confirm      = this->esbq_confirm_start;
1237         this->esbq_confirm_end += this->esbq_confirm_start;
1238         /* Initial Tx Buffer */
1239         this->tx_buffer_cnt = 1;
1240         ptr = this->tx_buffer_head;
1241         next = ptr + WL3501_BLKSZ;
1242         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1243                 this->tx_buffer_cnt++;
1244                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1245                 ptr = next;
1246                 next = ptr + WL3501_BLKSZ;
1247         }
1248         rc = 0;
1249         next = 0;
1250         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1251         this->tx_buffer_tail = ptr;
1252 out:
1253         return rc;
1254 fail:
1255         printk(KERN_WARNING "%s: failed!\n", __FUNCTION__);
1256         goto out;
1257 }
1258
1259 static int wl3501_close(struct net_device *dev)
1260 {
1261         struct wl3501_card *this = dev->priv;
1262         int rc = -ENODEV;
1263         unsigned long flags;
1264         struct pcmcia_device *link;
1265         link = this->p_dev;
1266
1267         spin_lock_irqsave(&this->lock, flags);
1268         link->open--;
1269
1270         /* Stop wl3501_hard_start_xmit() from now on */
1271         netif_stop_queue(dev);
1272         wl3501_ack_interrupt(this);
1273
1274         /* Mask interrupts from the SUTRO */
1275         wl3501_block_interrupt(this);
1276
1277         rc = 0;
1278         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1279         spin_unlock_irqrestore(&this->lock, flags);
1280         return rc;
1281 }
1282
1283 /**
1284  * wl3501_reset - Reset the SUTRO.
1285  * @dev - network device
1286  *
1287  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1288  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1289  * is running. It seems to be dangerous.
1290  */
1291 static int wl3501_reset(struct net_device *dev)
1292 {
1293         struct wl3501_card *this = dev->priv;
1294         int rc = -ENODEV;
1295
1296         wl3501_block_interrupt(this);
1297
1298         if (wl3501_init_firmware(this)) {
1299                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1300                        dev->name);
1301                 /* Free IRQ, and mark IRQ as unused */
1302                 free_irq(dev->irq, dev);
1303                 goto out;
1304         }
1305
1306         /*
1307          * Queue has to be started only when the Card is Started
1308          */
1309         netif_stop_queue(dev);
1310         this->adhoc_times = 0;
1311         wl3501_ack_interrupt(this);
1312         wl3501_unblock_interrupt(this);
1313         wl3501_mgmt_scan(this, 100);
1314         dprintk(1, "%s: device reset", dev->name);
1315         rc = 0;
1316 out:
1317         return rc;
1318 }
1319
1320 static void wl3501_tx_timeout(struct net_device *dev)
1321 {
1322         struct wl3501_card *this = dev->priv;
1323         struct net_device_stats *stats = &this->stats;
1324         unsigned long flags;
1325         int rc;
1326
1327         stats->tx_errors++;
1328         spin_lock_irqsave(&this->lock, flags);
1329         rc = wl3501_reset(dev);
1330         spin_unlock_irqrestore(&this->lock, flags);
1331         if (rc)
1332                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1333                        dev->name, rc);
1334         else {
1335                 dev->trans_start = jiffies;
1336                 netif_wake_queue(dev);
1337         }
1338 }
1339
1340 /*
1341  * Return : 0 - OK
1342  *          1 - Could not transmit (dev_queue_xmit will queue it)
1343  *              and try to sent it later
1344  */
1345 static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1346 {
1347         int enabled, rc;
1348         struct wl3501_card *this = dev->priv;
1349         unsigned long flags;
1350
1351         spin_lock_irqsave(&this->lock, flags);
1352         enabled = wl3501_block_interrupt(this);
1353         dev->trans_start = jiffies;
1354         rc = wl3501_send_pkt(this, skb->data, skb->len);
1355         if (enabled)
1356                 wl3501_unblock_interrupt(this);
1357         if (rc) {
1358                 ++this->stats.tx_dropped;
1359                 netif_stop_queue(dev);
1360         } else {
1361                 ++this->stats.tx_packets;
1362                 this->stats.tx_bytes += skb->len;
1363                 kfree_skb(skb);
1364
1365                 if (this->tx_buffer_cnt < 2)
1366                         netif_stop_queue(dev);
1367         }
1368         spin_unlock_irqrestore(&this->lock, flags);
1369         return rc;
1370 }
1371
1372 static int wl3501_open(struct net_device *dev)
1373 {
1374         int rc = -ENODEV;
1375         struct wl3501_card *this = dev->priv;
1376         unsigned long flags;
1377         struct pcmcia_device *link;
1378         link = this->p_dev;
1379
1380         spin_lock_irqsave(&this->lock, flags);
1381         if (!pcmcia_dev_present(link))
1382                 goto out;
1383         netif_device_attach(dev);
1384         link->open++;
1385
1386         /* Initial WL3501 firmware */
1387         dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
1388         if (wl3501_init_firmware(this))
1389                 goto fail;
1390         /* Initial device variables */
1391         this->adhoc_times = 0;
1392         /* Acknowledge Interrupt, for cleaning last state */
1393         wl3501_ack_interrupt(this);
1394
1395         /* Enable interrupt from card after all */
1396         wl3501_unblock_interrupt(this);
1397         wl3501_mgmt_scan(this, 100);
1398         rc = 0;
1399         dprintk(1, "%s: WL3501 opened", dev->name);
1400         printk(KERN_INFO "%s: Card Name: %s\n"
1401                          "%s: Firmware Date: %s\n",
1402                          dev->name, this->card_name,
1403                          dev->name, this->firmware_date);
1404 out:
1405         spin_unlock_irqrestore(&this->lock, flags);
1406         return rc;
1407 fail:
1408         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1409         goto out;
1410 }
1411
1412 static struct net_device_stats *wl3501_get_stats(struct net_device *dev)
1413 {
1414         struct wl3501_card *this = dev->priv;
1415
1416         return &this->stats;
1417 }
1418
1419 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1420 {
1421         struct wl3501_card *this = dev->priv;
1422         struct iw_statistics *wstats = &this->wstats;
1423         u32 value; /* size checked: it is u32 */
1424
1425         memset(wstats, 0, sizeof(*wstats));
1426         wstats->status = netif_running(dev);
1427         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1428                                   &value, sizeof(value)))
1429                 wstats->discard.code += value;
1430         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1431                                   &value, sizeof(value)))
1432                 wstats->discard.code += value;
1433         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1434                                   &value, sizeof(value)))
1435                 wstats->discard.code += value;
1436         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1437                                   &value, sizeof(value)))
1438                 wstats->discard.retries = value;
1439         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1440                                   &value, sizeof(value)))
1441                 wstats->discard.misc += value;
1442         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1443                                   &value, sizeof(value)))
1444                 wstats->discard.misc += value;
1445         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1446                                   &value, sizeof(value)))
1447                 wstats->discard.misc += value;
1448         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1449                                   &value, sizeof(value)))
1450                 wstats->discard.misc += value;
1451         return wstats;
1452 }
1453
1454 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1455 {
1456         strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1457 }
1458
1459 static const struct ethtool_ops ops = {
1460         .get_drvinfo = wl3501_get_drvinfo
1461 };
1462
1463 /**
1464  * wl3501_detach - deletes a driver "instance"
1465  * @link - FILL_IN
1466  *
1467  * This deletes a driver "instance". The device is de-registered with Card
1468  * Services. If it has been released, all local data structures are freed.
1469  * Otherwise, the structures will be freed when the device is released.
1470  */
1471 static void wl3501_detach(struct pcmcia_device *link)
1472 {
1473         struct net_device *dev = link->priv;
1474
1475         /* If the device is currently configured and active, we won't actually
1476          * delete it yet.  Instead, it is marked so that when the release()
1477          * function is called, that will trigger a proper detach(). */
1478
1479         while (link->open > 0)
1480                 wl3501_close(dev);
1481
1482         netif_device_detach(dev);
1483         wl3501_release(link);
1484
1485         if (link->priv)
1486                 free_netdev(link->priv);
1487
1488         return;
1489 }
1490
1491 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1492                            union iwreq_data *wrqu, char *extra)
1493 {
1494         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1495         return 0;
1496 }
1497
1498 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1499                            union iwreq_data *wrqu, char *extra)
1500 {
1501         struct wl3501_card *this = dev->priv;
1502         int channel = wrqu->freq.m;
1503         int rc = -EINVAL;
1504
1505         if (iw_valid_channel(this->reg_domain, channel)) {
1506                 this->chan = channel;
1507                 rc = wl3501_reset(dev);
1508         }
1509         return rc;
1510 }
1511
1512 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1513                            union iwreq_data *wrqu, char *extra)
1514 {
1515         struct wl3501_card *this = dev->priv;
1516
1517         wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
1518         wrqu->freq.e = 1;
1519         return 0;
1520 }
1521
1522 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1523                            union iwreq_data *wrqu, char *extra)
1524 {
1525         int rc = -EINVAL;
1526
1527         if (wrqu->mode == IW_MODE_INFRA ||
1528             wrqu->mode == IW_MODE_ADHOC ||
1529             wrqu->mode == IW_MODE_AUTO) {
1530                 struct wl3501_card *this = dev->priv;
1531
1532                 this->net_type = wrqu->mode;
1533                 rc = wl3501_reset(dev);
1534         }
1535         return rc;
1536 }
1537
1538 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1539                            union iwreq_data *wrqu, char *extra)
1540 {
1541         struct wl3501_card *this = dev->priv;
1542
1543         wrqu->mode = this->net_type;
1544         return 0;
1545 }
1546
1547 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1548                            union iwreq_data *wrqu, char *extra)
1549 {
1550         struct wl3501_card *this = dev->priv;
1551
1552         wrqu->sens.value = this->rssi;
1553         wrqu->sens.disabled = !wrqu->sens.value;
1554         wrqu->sens.fixed = 1;
1555         return 0;
1556 }
1557
1558 static int wl3501_get_range(struct net_device *dev,
1559                             struct iw_request_info *info,
1560                             union iwreq_data *wrqu, char *extra)
1561 {
1562         struct iw_range *range = (struct iw_range *)extra;
1563
1564         /* Set the length (very important for backward compatibility) */
1565         wrqu->data.length = sizeof(*range);
1566
1567         /* Set all the info we don't care or don't know about to zero */
1568         memset(range, 0, sizeof(*range));
1569
1570         /* Set the Wireless Extension versions */
1571         range->we_version_compiled      = WIRELESS_EXT;
1572         range->we_version_source        = 1;
1573         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1574         /* FIXME: study the code to fill in more fields... */
1575         return 0;
1576 }
1577
1578 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1579                           union iwreq_data *wrqu, char *extra)
1580 {
1581         struct wl3501_card *this = dev->priv;
1582         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1583         int rc = -EINVAL;
1584
1585         /* FIXME: we support other ARPHRDs...*/
1586         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1587                 goto out;
1588         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1589                 /* FIXME: rescan? */
1590         } else
1591                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1592                 /* FIXME: rescan? deassoc & scan? */
1593         rc = 0;
1594 out:
1595         return rc;
1596 }
1597
1598 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1599                           union iwreq_data *wrqu, char *extra)
1600 {
1601         struct wl3501_card *this = dev->priv;
1602
1603         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1604         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1605         return 0;
1606 }
1607
1608 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1609                            union iwreq_data *wrqu, char *extra)
1610 {
1611         /*
1612          * FIXME: trigger scanning with a reset, yes, I'm lazy
1613          */
1614         return wl3501_reset(dev);
1615 }
1616
1617 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1618                            union iwreq_data *wrqu, char *extra)
1619 {
1620         struct wl3501_card *this = dev->priv;
1621         int i;
1622         char *current_ev = extra;
1623         struct iw_event iwe;
1624
1625         for (i = 0; i < this->bss_cnt; ++i) {
1626                 iwe.cmd                 = SIOCGIWAP;
1627                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1628                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1629                 current_ev = iwe_stream_add_event(current_ev,
1630                                                   extra + IW_SCAN_MAX_DATA,
1631                                                   &iwe, IW_EV_ADDR_LEN);
1632                 iwe.cmd           = SIOCGIWESSID;
1633                 iwe.u.data.flags  = 1;
1634                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1635                 current_ev = iwe_stream_add_point(current_ev,
1636                                                   extra + IW_SCAN_MAX_DATA,
1637                                                   &iwe,
1638                                                   this->bss_set[i].ssid.essid);
1639                 iwe.cmd    = SIOCGIWMODE;
1640                 iwe.u.mode = this->bss_set[i].bss_type;
1641                 current_ev = iwe_stream_add_event(current_ev,
1642                                                   extra + IW_SCAN_MAX_DATA,
1643                                                   &iwe, IW_EV_UINT_LEN);
1644                 iwe.cmd = SIOCGIWFREQ;
1645                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1646                 iwe.u.freq.e = 0;
1647                 current_ev = iwe_stream_add_event(current_ev,
1648                                                   extra + IW_SCAN_MAX_DATA,
1649                                                   &iwe, IW_EV_FREQ_LEN);
1650                 iwe.cmd = SIOCGIWENCODE;
1651                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1652                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1653                 else
1654                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1655                 iwe.u.data.length = 0;
1656                 current_ev = iwe_stream_add_point(current_ev,
1657                                                   extra + IW_SCAN_MAX_DATA,
1658                                                   &iwe, NULL);
1659         }
1660         /* Length of data */
1661         wrqu->data.length = (current_ev - extra);
1662         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1663         return 0;
1664 }
1665
1666 static int wl3501_set_essid(struct net_device *dev,
1667                             struct iw_request_info *info,
1668                             union iwreq_data *wrqu, char *extra)
1669 {
1670         struct wl3501_card *this = dev->priv;
1671
1672         if (wrqu->data.flags) {
1673                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1674                                          &this->essid.el,
1675                                          extra, wrqu->data.length);
1676         } else { /* We accept any ESSID */
1677                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1678                                          &this->essid.el, "ANY", 3);
1679         }
1680         return wl3501_reset(dev);
1681 }
1682
1683 static int wl3501_get_essid(struct net_device *dev,
1684                             struct iw_request_info *info,
1685                             union iwreq_data *wrqu, char *extra)
1686 {
1687         struct wl3501_card *this = dev->priv;
1688         unsigned long flags;
1689
1690         spin_lock_irqsave(&this->lock, flags);
1691         wrqu->essid.flags  = 1;
1692         wrqu->essid.length = this->essid.el.len;
1693         memcpy(extra, this->essid.essid, this->essid.el.len);
1694         spin_unlock_irqrestore(&this->lock, flags);
1695         return 0;
1696 }
1697
1698 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1699                            union iwreq_data *wrqu, char *extra)
1700 {
1701         struct wl3501_card *this = dev->priv;
1702
1703         if (wrqu->data.length > sizeof(this->nick))
1704                 return -E2BIG;
1705         strlcpy(this->nick, extra, wrqu->data.length);
1706         return 0;
1707 }
1708
1709 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1710                            union iwreq_data *wrqu, char *extra)
1711 {
1712         struct wl3501_card *this = dev->priv;
1713
1714         strlcpy(extra, this->nick, 32);
1715         wrqu->data.length = strlen(extra);
1716         return 0;
1717 }
1718
1719 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1720                            union iwreq_data *wrqu, char *extra)
1721 {
1722         /*
1723          * FIXME: have to see from where to get this info, perhaps this card
1724          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1725          * common with the Planet Access Points. -acme
1726          */
1727         wrqu->bitrate.value = 2000000;
1728         wrqu->bitrate.fixed = 1;
1729         return 0;
1730 }
1731
1732 static int wl3501_get_rts_threshold(struct net_device *dev,
1733                                     struct iw_request_info *info,
1734                                     union iwreq_data *wrqu, char *extra)
1735 {
1736         u16 threshold; /* size checked: it is u16 */
1737         struct wl3501_card *this = dev->priv;
1738         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1739                                       &threshold, sizeof(threshold));
1740         if (!rc) {
1741                 wrqu->rts.value = threshold;
1742                 wrqu->rts.disabled = threshold >= 2347;
1743                 wrqu->rts.fixed = 1;
1744         }
1745         return rc;
1746 }
1747
1748 static int wl3501_get_frag_threshold(struct net_device *dev,
1749                                      struct iw_request_info *info,
1750                                      union iwreq_data *wrqu, char *extra)
1751 {
1752         u16 threshold; /* size checked: it is u16 */
1753         struct wl3501_card *this = dev->priv;
1754         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1755                                       &threshold, sizeof(threshold));
1756         if (!rc) {
1757                 wrqu->frag.value = threshold;
1758                 wrqu->frag.disabled = threshold >= 2346;
1759                 wrqu->frag.fixed = 1;
1760         }
1761         return rc;
1762 }
1763
1764 static int wl3501_get_txpow(struct net_device *dev,
1765                             struct iw_request_info *info,
1766                             union iwreq_data *wrqu, char *extra)
1767 {
1768         u16 txpow;
1769         struct wl3501_card *this = dev->priv;
1770         int rc = wl3501_get_mib_value(this,
1771                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1772                                       &txpow, sizeof(txpow));
1773         if (!rc) {
1774                 wrqu->txpower.value = txpow;
1775                 wrqu->txpower.disabled = 0;
1776                 /*
1777                  * From the MIB values I think this can be configurable,
1778                  * as it lists several tx power levels -acme
1779                  */
1780                 wrqu->txpower.fixed = 0;
1781                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1782         }
1783         return rc;
1784 }
1785
1786 static int wl3501_get_retry(struct net_device *dev,
1787                             struct iw_request_info *info,
1788                             union iwreq_data *wrqu, char *extra)
1789 {
1790         u8 retry; /* size checked: it is u8 */
1791         struct wl3501_card *this = dev->priv;
1792         int rc = wl3501_get_mib_value(this,
1793                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1794                                       &retry, sizeof(retry));
1795         if (rc)
1796                 goto out;
1797         if (wrqu->retry.flags & IW_RETRY_LONG) {
1798                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1799                 goto set_value;
1800         }
1801         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1802                                   &retry, sizeof(retry));
1803         if (rc)
1804                 goto out;
1805         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1806 set_value:
1807         wrqu->retry.value = retry;
1808         wrqu->retry.disabled = 0;
1809 out:
1810         return rc;
1811 }
1812
1813 static int wl3501_get_encode(struct net_device *dev,
1814                              struct iw_request_info *info,
1815                              union iwreq_data *wrqu, char *extra)
1816 {
1817         u8 implemented, restricted, keys[100], len_keys, tocopy;
1818         struct wl3501_card *this = dev->priv;
1819         int rc = wl3501_get_mib_value(this,
1820                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1821                                       &implemented, sizeof(implemented));
1822         if (rc)
1823                 goto out;
1824         if (!implemented) {
1825                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1826                 goto out;
1827         }
1828         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1829                                   &restricted, sizeof(restricted));
1830         if (rc)
1831                 goto out;
1832         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1833                                             IW_ENCODE_OPEN;
1834         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1835                                   &len_keys, sizeof(len_keys));
1836         if (rc)
1837                 goto out;
1838         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1839                                   keys, len_keys);
1840         if (rc)
1841                 goto out;
1842         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1843         tocopy = min_t(u8, tocopy, 100);
1844         wrqu->encoding.length = tocopy;
1845         memset(extra, 0, tocopy);
1846         memcpy(extra, keys, tocopy);
1847 out:
1848         return rc;
1849 }
1850
1851 static int wl3501_get_power(struct net_device *dev,
1852                             struct iw_request_info *info,
1853                             union iwreq_data *wrqu, char *extra)
1854 {
1855         u8 pwr_state;
1856         struct wl3501_card *this = dev->priv;
1857         int rc = wl3501_get_mib_value(this,
1858                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1859                                       &pwr_state, sizeof(pwr_state));
1860         if (rc)
1861                 goto out;
1862         wrqu->power.disabled = !pwr_state;
1863         wrqu->power.flags = IW_POWER_ON;
1864 out:
1865         return rc;
1866 }
1867
1868 static const iw_handler wl3501_handler[] = {
1869         [SIOCGIWNAME    - SIOCIWFIRST] = wl3501_get_name,
1870         [SIOCSIWFREQ    - SIOCIWFIRST] = wl3501_set_freq,
1871         [SIOCGIWFREQ    - SIOCIWFIRST] = wl3501_get_freq,
1872         [SIOCSIWMODE    - SIOCIWFIRST] = wl3501_set_mode,
1873         [SIOCGIWMODE    - SIOCIWFIRST] = wl3501_get_mode,
1874         [SIOCGIWSENS    - SIOCIWFIRST] = wl3501_get_sens,
1875         [SIOCGIWRANGE   - SIOCIWFIRST] = wl3501_get_range,
1876         [SIOCSIWSPY     - SIOCIWFIRST] = iw_handler_set_spy,
1877         [SIOCGIWSPY     - SIOCIWFIRST] = iw_handler_get_spy,
1878         [SIOCSIWTHRSPY  - SIOCIWFIRST] = iw_handler_set_thrspy,
1879         [SIOCGIWTHRSPY  - SIOCIWFIRST] = iw_handler_get_thrspy,
1880         [SIOCSIWAP      - SIOCIWFIRST] = wl3501_set_wap,
1881         [SIOCGIWAP      - SIOCIWFIRST] = wl3501_get_wap,
1882         [SIOCSIWSCAN    - SIOCIWFIRST] = wl3501_set_scan,
1883         [SIOCGIWSCAN    - SIOCIWFIRST] = wl3501_get_scan,
1884         [SIOCSIWESSID   - SIOCIWFIRST] = wl3501_set_essid,
1885         [SIOCGIWESSID   - SIOCIWFIRST] = wl3501_get_essid,
1886         [SIOCSIWNICKN   - SIOCIWFIRST] = wl3501_set_nick,
1887         [SIOCGIWNICKN   - SIOCIWFIRST] = wl3501_get_nick,
1888         [SIOCGIWRATE    - SIOCIWFIRST] = wl3501_get_rate,
1889         [SIOCGIWRTS     - SIOCIWFIRST] = wl3501_get_rts_threshold,
1890         [SIOCGIWFRAG    - SIOCIWFIRST] = wl3501_get_frag_threshold,
1891         [SIOCGIWTXPOW   - SIOCIWFIRST] = wl3501_get_txpow,
1892         [SIOCGIWRETRY   - SIOCIWFIRST] = wl3501_get_retry,
1893         [SIOCGIWENCODE  - SIOCIWFIRST] = wl3501_get_encode,
1894         [SIOCGIWPOWER   - SIOCIWFIRST] = wl3501_get_power,
1895 };
1896
1897 static const struct iw_handler_def wl3501_handler_def = {
1898         .num_standard   = sizeof(wl3501_handler) / sizeof(iw_handler),
1899         .standard       = (iw_handler *)wl3501_handler,
1900         .get_wireless_stats = wl3501_get_wireless_stats,
1901 };
1902
1903 /**
1904  * wl3501_attach - creates an "instance" of the driver
1905  *
1906  * Creates an "instance" of the driver, allocating local data structures for
1907  * one device.  The device is registered with Card Services.
1908  *
1909  * The dev_link structure is initialized, but we don't actually configure the
1910  * card at this point -- we wait until we receive a card insertion event.
1911  */
1912 static int wl3501_probe(struct pcmcia_device *p_dev)
1913 {
1914         struct net_device *dev;
1915         struct wl3501_card *this;
1916
1917         /* The io structure describes IO port mapping */
1918         p_dev->io.NumPorts1     = 16;
1919         p_dev->io.Attributes1   = IO_DATA_PATH_WIDTH_8;
1920         p_dev->io.IOAddrLines   = 5;
1921
1922         /* Interrupt setup */
1923         p_dev->irq.Attributes   = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
1924         p_dev->irq.IRQInfo1     = IRQ_LEVEL_ID;
1925         p_dev->irq.Handler = wl3501_interrupt;
1926
1927         /* General socket configuration */
1928         p_dev->conf.Attributes  = CONF_ENABLE_IRQ;
1929         p_dev->conf.IntType     = INT_MEMORY_AND_IO;
1930         p_dev->conf.ConfigIndex = 1;
1931
1932         dev = alloc_etherdev(sizeof(struct wl3501_card));
1933         if (!dev)
1934                 goto out_link;
1935         dev->open               = wl3501_open;
1936         dev->stop               = wl3501_close;
1937         dev->hard_start_xmit    = wl3501_hard_start_xmit;
1938         dev->tx_timeout         = wl3501_tx_timeout;
1939         dev->watchdog_timeo     = 5 * HZ;
1940         dev->get_stats          = wl3501_get_stats;
1941         this = dev->priv;
1942         this->wireless_data.spy_data = &this->spy_data;
1943         this->p_dev = p_dev;
1944         dev->wireless_data      = &this->wireless_data;
1945         dev->wireless_handlers  = (struct iw_handler_def *)&wl3501_handler_def;
1946         SET_ETHTOOL_OPS(dev, &ops);
1947         netif_stop_queue(dev);
1948         p_dev->priv = p_dev->irq.Instance = dev;
1949
1950         return wl3501_config(p_dev);
1951 out_link:
1952         return -ENOMEM;
1953 }
1954
1955 #define CS_CHECK(fn, ret) \
1956 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
1957
1958 /**
1959  * wl3501_config - configure the PCMCIA socket and make eth device available
1960  * @link - FILL_IN
1961  *
1962  * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1963  * received, to configure the PCMCIA socket, and to make the ethernet device
1964  * available to the system.
1965  */
1966 static int wl3501_config(struct pcmcia_device *link)
1967 {
1968         struct net_device *dev = link->priv;
1969         int i = 0, j, last_fn, last_ret;
1970         struct wl3501_card *this;
1971
1972         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1973          * want, you can also read the card's config table to pick addresses --
1974          * see the serial driver for an example. */
1975
1976         for (j = 0x280; j < 0x400; j += 0x20) {
1977                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1978                  * 0x200-0x2ff, and so on, because this seems safer */
1979                 link->io.BasePort1 = j;
1980                 link->io.BasePort2 = link->io.BasePort1 + 0x10;
1981                 i = pcmcia_request_io(link, &link->io);
1982                 if (i == CS_SUCCESS)
1983                         break;
1984         }
1985         if (i != CS_SUCCESS) {
1986                 cs_error(link, RequestIO, i);
1987                 goto failed;
1988         }
1989
1990         /* Now allocate an interrupt line. Note that this does not actually
1991          * assign a handler to the interrupt. */
1992
1993         CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
1994
1995         /* This actually configures the PCMCIA socket -- setting up the I/O
1996          * windows and the interrupt mapping.  */
1997
1998         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1999
2000         dev->irq = link->irq.AssignedIRQ;
2001         dev->base_addr = link->io.BasePort1;
2002         SET_NETDEV_DEV(dev, &handle_to_dev(link));
2003         if (register_netdev(dev)) {
2004                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
2005                 goto failed;
2006         }
2007
2008         SET_MODULE_OWNER(dev);
2009
2010         this = dev->priv;
2011         /*
2012          * At this point, the dev_node_t structure(s) should be initialized and
2013          * arranged in a linked list at link->dev_node.
2014          */
2015         link->dev_node = &this->node;
2016
2017         this->base_addr = dev->base_addr;
2018
2019         if (!wl3501_get_flash_mac_addr(this)) {
2020                 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
2021                        dev->name);
2022                 goto failed;
2023         }
2024         strcpy(this->node.dev_name, dev->name);
2025
2026         /* print probe information */
2027         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, MAC addr in flash ROM:",
2028                dev->name, this->base_addr, (int)dev->irq);
2029         for (i = 0; i < 6; i++) {
2030                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
2031                 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
2032         }
2033         printk("\n");
2034         /*
2035          * Initialize card parameters - added by jss
2036          */
2037         this->net_type          = IW_MODE_INFRA;
2038         this->bss_cnt           = 0;
2039         this->join_sta_bss      = 0;
2040         this->adhoc_times       = 0;
2041         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2042                                  "ANY", 3);
2043         this->card_name[0]      = '\0';
2044         this->firmware_date[0]  = '\0';
2045         this->rssi              = 255;
2046         this->chan              = iw_default_channel(this->reg_domain);
2047         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2048         spin_lock_init(&this->lock);
2049         init_waitqueue_head(&this->wait);
2050         netif_start_queue(dev);
2051         return 0;
2052
2053 cs_failed:
2054         cs_error(link, last_fn, last_ret);
2055 failed:
2056         wl3501_release(link);
2057         return -ENODEV;
2058 }
2059
2060 /**
2061  * wl3501_release - unregister the net, release PCMCIA configuration
2062  * @arg - link
2063  *
2064  * After a card is removed, wl3501_release() will unregister the net device,
2065  * and release the PCMCIA configuration.  If the device is still open, this
2066  * will be postponed until it is closed.
2067  */
2068 static void wl3501_release(struct pcmcia_device *link)
2069 {
2070         struct net_device *dev = link->priv;
2071
2072         /* Unlink the device chain */
2073         if (link->dev_node)
2074                 unregister_netdev(dev);
2075
2076         pcmcia_disable_device(link);
2077 }
2078
2079 static int wl3501_suspend(struct pcmcia_device *link)
2080 {
2081         struct net_device *dev = link->priv;
2082
2083         wl3501_pwr_mgmt(dev->priv, WL3501_SUSPEND);
2084         if (link->open)
2085                 netif_device_detach(dev);
2086
2087         return 0;
2088 }
2089
2090 static int wl3501_resume(struct pcmcia_device *link)
2091 {
2092         struct net_device *dev = link->priv;
2093
2094         wl3501_pwr_mgmt(dev->priv, WL3501_RESUME);
2095         if (link->open) {
2096                 wl3501_reset(dev);
2097                 netif_device_attach(dev);
2098         }
2099
2100         return 0;
2101 }
2102
2103
2104 static struct pcmcia_device_id wl3501_ids[] = {
2105         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2106         PCMCIA_DEVICE_NULL
2107 };
2108 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2109
2110 static struct pcmcia_driver wl3501_driver = {
2111         .owner          = THIS_MODULE,
2112         .drv            = {
2113                 .name   = "wl3501_cs",
2114         },
2115         .probe          = wl3501_probe,
2116         .remove         = wl3501_detach,
2117         .id_table       = wl3501_ids,
2118         .suspend        = wl3501_suspend,
2119         .resume         = wl3501_resume,
2120 };
2121
2122 static int __init wl3501_init_module(void)
2123 {
2124         return pcmcia_register_driver(&wl3501_driver);
2125 }
2126
2127 static void __exit wl3501_exit_module(void)
2128 {
2129         pcmcia_unregister_driver(&wl3501_driver);
2130 }
2131
2132 module_init(wl3501_init_module);
2133 module_exit(wl3501_exit_module);
2134
2135 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2136               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2137               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2138 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2139 MODULE_LICENSE("GPL");