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   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", __func__ , ##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", __func__,
 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
 864         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 865                dev->name, this->bssid);
 866         netif_wake_queue(dev);
 867 }
 868
 869 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 870 {
 871         u8 tmp = 0;
 872
 873         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 874         this->esbq_confirm += 4;
 875         if (this->esbq_confirm >= this->esbq_confirm_end)
 876                 this->esbq_confirm = this->esbq_confirm_start;
 877 }
 878
 879 static int wl3501_mgmt_auth(struct wl3501_card *this)
 880 {
 881         struct wl3501_auth_req sig = {
 882                 .sig_id  = WL3501_SIG_AUTH_REQ,
 883                 .type    = WL3501_SYS_TYPE_OPEN,
 884                 .timeout = 1000,
 885         };
 886
 887         dprintk(3, "entry");
 888         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 889         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 890 }
 891
 892 static int wl3501_mgmt_association(struct wl3501_card *this)
 893 {
 894         struct wl3501_assoc_req sig = {
 895                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 896                 .timeout         = 1000,
 897                 .listen_interval = 5,
 898                 .cap_info        = this->cap_info,
 899         };
 900
 901         dprintk(3, "entry");
 902         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 903         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 904 }
 905
 906 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 907 {
 908         struct wl3501_card *this = netdev_priv(dev);
 909         struct wl3501_join_confirm sig;
 910
 911         dprintk(3, "entry");
 912         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 913         if (sig.status == WL3501_STATUS_SUCCESS) {
 914                 if (this->net_type == IW_MODE_INFRA) {
 915                         if (this->join_sta_bss < this->bss_cnt) {
 916                                 const int i = this->join_sta_bss;
 917                                 memcpy(this->bssid,
 918                                        this->bss_set[i].bssid, ETH_ALEN);
 919                                 this->chan = this->bss_set[i].ds_pset.chan;
 920                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 921                                                      &this->bss_set[i].ssid.el);
 922                                 wl3501_mgmt_auth(this);
 923                         }
 924                 } else {
 925                         const int i = this->join_sta_bss;
 926
 927                         memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
 928                         this->chan = this->bss_set[i].ds_pset.chan;
 929                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 930                                                   &this->bss_set[i].ssid.el);
 931                         wl3501_online(dev);
 932                 }
 933         } else {
 934                 int i;
 935                 this->join_sta_bss++;
 936                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 937                         if (!wl3501_mgmt_join(this, i))
 938                                 break;
 939                 this->join_sta_bss = i;
 940                 if (this->join_sta_bss == this->bss_cnt) {
 941                         if (this->net_type == IW_MODE_INFRA)
 942                                 wl3501_mgmt_scan(this, 100);
 943                         else {
 944                                 this->adhoc_times++;
 945                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 946                                         wl3501_mgmt_start(this);
 947                                 else
 948                                         wl3501_mgmt_scan(this, 100);
 949                         }
 950                 }
 951         }
 952 }
 953
 954 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 955                                           struct wl3501_card *this)
 956 {
 957         if (this->net_type == IW_MODE_INFRA) {
 958                 printk(KERN_INFO "Wireless LAN offline\n");
 959                 netif_stop_queue(dev);
 960                 wl3501_mgmt_resync(this);
 961         }
 962 }
 963
 964 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 965                                                struct wl3501_card *this,
 966                                                u16 addr)
 967 {
 968         struct wl3501_md_confirm sig;
 969
 970         dprintk(3, "entry");
 971         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 972         wl3501_free_tx_buffer(this, sig.data);
 973         if (netif_queue_stopped(dev))
 974                 netif_wake_queue(dev);
 975 }
 976
 977 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 978                                            struct wl3501_card *this, u16 addr)
 979 {
 980         struct wl3501_md_ind sig;
 981         struct sk_buff *skb;
 982         u8 rssi, addr4[ETH_ALEN];
 983         u16 pkt_len;
 984
 985         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 986         this->start_seg = sig.data;
 987         wl3501_get_from_wla(this,
 988                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 989                             &rssi, sizeof(rssi));
 990         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 991
 992         wl3501_get_from_wla(this,
 993                             sig.data +
 994                                 offsetof(struct wl3501_rx_hdr, addr4),
 995                             &addr4, sizeof(addr4));
 996         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 997               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 998                 printk(KERN_INFO "Insupported packet type!\n");
 999                 return;
1000         }
1001         pkt_len = sig.size + 12 - 24 - 4 - 6;
1002
1003         skb = dev_alloc_skb(pkt_len + 5);
1004
1005         if (!skb) {
1006                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
1007                        dev->name, pkt_len);
1008                 this->stats.rx_dropped++;
1009         } else {
1010                 skb->dev = dev;
1011                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
1012                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
1013                 wl3501_receive(this, skb->data, pkt_len);
1014                 skb_put(skb, pkt_len);
1015                 skb->protocol   = eth_type_trans(skb, dev);
1016                 this->stats.rx_packets++;
1017                 this->stats.rx_bytes += skb->len;
1018                 netif_rx(skb);
1019         }
1020 }
1021
1022 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
1023                                                 u16 addr, void *sig, int size)
1024 {
1025         dprintk(3, "entry");
1026         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1027                             sizeof(this->sig_get_confirm));
1028         wake_up(&this->wait);
1029 }
1030
1031 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1032                                                   struct wl3501_card *this,
1033                                                   u16 addr)
1034 {
1035         struct wl3501_start_confirm sig;
1036
1037         dprintk(3, "entry");
1038         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1039         if (sig.status == WL3501_STATUS_SUCCESS)
1040                 netif_wake_queue(dev);
1041 }
1042
1043 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1044                                                   u16 addr)
1045 {
1046         struct wl3501_card *this = netdev_priv(dev);
1047         struct wl3501_assoc_confirm sig;
1048
1049         dprintk(3, "entry");
1050         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1051
1052         if (sig.status == WL3501_STATUS_SUCCESS)
1053                 wl3501_online(dev);
1054 }
1055
1056 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1057                                                  u16 addr)
1058 {
1059         struct wl3501_auth_confirm sig;
1060
1061         dprintk(3, "entry");
1062         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1063
1064         if (sig.status == WL3501_STATUS_SUCCESS)
1065                 wl3501_mgmt_association(this);
1066         else
1067                 wl3501_mgmt_resync(this);
1068 }
1069
1070 static inline void wl3501_rx_interrupt(struct net_device *dev)
1071 {
1072         int morepkts;
1073         u16 addr;
1074         u8 sig_id;
1075         struct wl3501_card *this = netdev_priv(dev);
1076
1077         dprintk(3, "entry");
1078 loop:
1079         morepkts = 0;
1080         if (!wl3501_esbq_confirm(this))
1081                 goto free;
1082         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1083         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1084
1085         switch (sig_id) {
1086         case WL3501_SIG_DEAUTH_IND:
1087         case WL3501_SIG_DISASSOC_IND:
1088         case WL3501_SIG_ALARM:
1089                 wl3501_alarm_interrupt(dev, this);
1090                 break;
1091         case WL3501_SIG_MD_CONFIRM:
1092                 wl3501_md_confirm_interrupt(dev, this, addr);
1093                 break;
1094         case WL3501_SIG_MD_IND:
1095                 wl3501_md_ind_interrupt(dev, this, addr);
1096                 break;
1097         case WL3501_SIG_GET_CONFIRM:
1098                 wl3501_get_confirm_interrupt(this, addr,
1099                                              &this->sig_get_confirm,
1100                                              sizeof(this->sig_get_confirm));
1101                 break;
1102         case WL3501_SIG_PWR_MGMT_CONFIRM:
1103                 wl3501_get_confirm_interrupt(this, addr,
1104                                              &this->sig_pwr_mgmt_confirm,
1105                                             sizeof(this->sig_pwr_mgmt_confirm));
1106                 break;
1107         case WL3501_SIG_START_CONFIRM:
1108                 wl3501_start_confirm_interrupt(dev, this, addr);
1109                 break;
1110         case WL3501_SIG_SCAN_CONFIRM:
1111                 wl3501_mgmt_scan_confirm(this, addr);
1112                 break;
1113         case WL3501_SIG_JOIN_CONFIRM:
1114                 wl3501_mgmt_join_confirm(dev, addr);
1115                 break;
1116         case WL3501_SIG_ASSOC_CONFIRM:
1117                 wl3501_assoc_confirm_interrupt(dev, addr);
1118                 break;
1119         case WL3501_SIG_AUTH_CONFIRM:
1120                 wl3501_auth_confirm_interrupt(this, addr);
1121                 break;
1122         case WL3501_SIG_RESYNC_CONFIRM:
1123                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1124                 break;
1125         }
1126         wl3501_esbq_confirm_done(this);
1127         morepkts = 1;
1128         /* free request if necessary */
1129 free:
1130         wl3501_esbq_req_free(this);
1131         if (morepkts)
1132                 goto loop;
1133 }
1134
1135 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1136 {
1137         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1138 }
1139
1140 /**
1141  * wl3501_interrupt - Hardware interrupt from card.
1142  * @irq - Interrupt number
1143  * @dev_id - net_device
1144  *
1145  * We must acknowledge the interrupt as soon as possible, and block the
1146  * interrupt from the same card immediately to prevent re-entry.
1147  *
1148  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1149  * On the other hand, to prevent SUTRO from malfunctioning, we must
1150  * unlock the SUTRO as soon as possible.
1151  */
1152 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1153 {
1154         struct net_device *dev = dev_id;
1155         struct wl3501_card *this;
1156
1157         this = netdev_priv(dev);
1158         spin_lock(&this->lock);
1159         wl3501_ack_interrupt(this);
1160         wl3501_block_interrupt(this);
1161         wl3501_rx_interrupt(dev);
1162         wl3501_unblock_interrupt(this);
1163         spin_unlock(&this->lock);
1164
1165         return IRQ_HANDLED;
1166 }
1167
1168 static int wl3501_reset_board(struct wl3501_card *this)
1169 {
1170         u8 tmp = 0;
1171         int i, rc = 0;
1172
1173         /* Coreset */
1174         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1175         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1176         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1177
1178         /* Reset SRAM 0x480 to zero */
1179         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1180
1181         /* Start up */
1182         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1183
1184         WL3501_NOPLOOP(1024 * 50);
1185
1186         wl3501_unblock_interrupt(this); /* acme: was commented */
1187
1188         /* Polling Self_Test_Status */
1189         for (i = 0; i < 10000; i++) {
1190                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1191
1192                 if (tmp == 'W') {
1193                         /* firmware complete all test successfully */
1194                         tmp = 'A';
1195                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1196                         goto out;
1197                 }
1198                 WL3501_NOPLOOP(10);
1199         }
1200         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1201         rc = -ENODEV;
1202 out:
1203         return rc;
1204 }
1205
1206 static int wl3501_init_firmware(struct wl3501_card *this)
1207 {
1208         u16 ptr, next;
1209         int rc = wl3501_reset_board(this);
1210
1211         if (rc)
1212                 goto fail;
1213         this->card_name[0] = '\0';
1214         wl3501_get_from_wla(this, 0x1a00,
1215                             this->card_name, sizeof(this->card_name));
1216         this->card_name[sizeof(this->card_name) - 1] = '\0';
1217         this->firmware_date[0] = '\0';
1218         wl3501_get_from_wla(this, 0x1a40,
1219                             this->firmware_date, sizeof(this->firmware_date));
1220         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1221         /* Switch to SRAM Page 0 */
1222         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1223         /* Read parameter from card */
1224         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1225         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1226         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1227         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1228         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1229         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1230         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1231         this->esbq_req_end     += this->esbq_req_start;
1232         this->esbq_confirm      = this->esbq_confirm_start;
1233         this->esbq_confirm_end += this->esbq_confirm_start;
1234         /* Initial Tx Buffer */
1235         this->tx_buffer_cnt = 1;
1236         ptr = this->tx_buffer_head;
1237         next = ptr + WL3501_BLKSZ;
1238         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1239                 this->tx_buffer_cnt++;
1240                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1241                 ptr = next;
1242                 next = ptr + WL3501_BLKSZ;
1243         }
1244         rc = 0;
1245         next = 0;
1246         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1247         this->tx_buffer_tail = ptr;
1248 out:
1249         return rc;
1250 fail:
1251         printk(KERN_WARNING "%s: failed!\n", __func__);
1252         goto out;
1253 }
1254
1255 static int wl3501_close(struct net_device *dev)
1256 {
1257         struct wl3501_card *this = netdev_priv(dev);
1258         int rc = -ENODEV;
1259         unsigned long flags;
1260         struct pcmcia_device *link;
1261         link = this->p_dev;
1262
1263         spin_lock_irqsave(&this->lock, flags);
1264         link->open--;
1265
1266         /* Stop wl3501_hard_start_xmit() from now on */
1267         netif_stop_queue(dev);
1268         wl3501_ack_interrupt(this);
1269
1270         /* Mask interrupts from the SUTRO */
1271         wl3501_block_interrupt(this);
1272
1273         rc = 0;
1274         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1275         spin_unlock_irqrestore(&this->lock, flags);
1276         return rc;
1277 }
1278
1279 /**
1280  * wl3501_reset - Reset the SUTRO.
1281  * @dev - network device
1282  *
1283  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1284  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1285  * is running. It seems to be dangerous.
1286  */
1287 static int wl3501_reset(struct net_device *dev)
1288 {
1289         struct wl3501_card *this = netdev_priv(dev);
1290         int rc = -ENODEV;
1291
1292         wl3501_block_interrupt(this);
1293
1294         if (wl3501_init_firmware(this)) {
1295                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1296                        dev->name);
1297                 /* Free IRQ, and mark IRQ as unused */
1298                 free_irq(dev->irq, dev);
1299                 goto out;
1300         }
1301
1302         /*
1303          * Queue has to be started only when the Card is Started
1304          */
1305         netif_stop_queue(dev);
1306         this->adhoc_times = 0;
1307         wl3501_ack_interrupt(this);
1308         wl3501_unblock_interrupt(this);
1309         wl3501_mgmt_scan(this, 100);
1310         dprintk(1, "%s: device reset", dev->name);
1311         rc = 0;
1312 out:
1313         return rc;
1314 }
1315
1316 static void wl3501_tx_timeout(struct net_device *dev)
1317 {
1318         struct wl3501_card *this = netdev_priv(dev);
1319         struct net_device_stats *stats = &this->stats;
1320         unsigned long flags;
1321         int rc;
1322
1323         stats->tx_errors++;
1324         spin_lock_irqsave(&this->lock, flags);
1325         rc = wl3501_reset(dev);
1326         spin_unlock_irqrestore(&this->lock, flags);
1327         if (rc)
1328                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1329                        dev->name, rc);
1330         else {
1331                 dev->trans_start = jiffies;
1332                 netif_wake_queue(dev);
1333         }
1334 }
1335
1336 /*
1337  * Return : 0 - OK
1338  *          1 - Could not transmit (dev_queue_xmit will queue it)
1339  *              and try to sent it later
1340  */
1341 static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1342 {
1343         int enabled, rc;
1344         struct wl3501_card *this = netdev_priv(dev);
1345         unsigned long flags;
1346
1347         spin_lock_irqsave(&this->lock, flags);
1348         enabled = wl3501_block_interrupt(this);
1349         dev->trans_start = jiffies;
1350         rc = wl3501_send_pkt(this, skb->data, skb->len);
1351         if (enabled)
1352                 wl3501_unblock_interrupt(this);
1353         if (rc) {
1354                 ++this->stats.tx_dropped;
1355                 netif_stop_queue(dev);
1356         } else {
1357                 ++this->stats.tx_packets;
1358                 this->stats.tx_bytes += skb->len;
1359                 kfree_skb(skb);
1360
1361                 if (this->tx_buffer_cnt < 2)
1362                         netif_stop_queue(dev);
1363         }
1364         spin_unlock_irqrestore(&this->lock, flags);
1365         return rc;
1366 }
1367
1368 static int wl3501_open(struct net_device *dev)
1369 {
1370         int rc = -ENODEV;
1371         struct wl3501_card *this = netdev_priv(dev);
1372         unsigned long flags;
1373         struct pcmcia_device *link;
1374         link = this->p_dev;
1375
1376         spin_lock_irqsave(&this->lock, flags);
1377         if (!pcmcia_dev_present(link))
1378                 goto out;
1379         netif_device_attach(dev);
1380         link->open++;
1381
1382         /* Initial WL3501 firmware */
1383         dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
1384         if (wl3501_init_firmware(this))
1385                 goto fail;
1386         /* Initial device variables */
1387         this->adhoc_times = 0;
1388         /* Acknowledge Interrupt, for cleaning last state */
1389         wl3501_ack_interrupt(this);
1390
1391         /* Enable interrupt from card after all */
1392         wl3501_unblock_interrupt(this);
1393         wl3501_mgmt_scan(this, 100);
1394         rc = 0;
1395         dprintk(1, "%s: WL3501 opened", dev->name);
1396         printk(KERN_INFO "%s: Card Name: %s\n"
1397                          "%s: Firmware Date: %s\n",
1398                          dev->name, this->card_name,
1399                          dev->name, this->firmware_date);
1400 out:
1401         spin_unlock_irqrestore(&this->lock, flags);
1402         return rc;
1403 fail:
1404         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1405         goto out;
1406 }
1407
1408 static struct net_device_stats *wl3501_get_stats(struct net_device *dev)
1409 {
1410         struct wl3501_card *this = netdev_priv(dev);
1411
1412         return &this->stats;
1413 }
1414
1415 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1416 {
1417         struct wl3501_card *this = netdev_priv(dev);
1418         struct iw_statistics *wstats = &this->wstats;
1419         u32 value; /* size checked: it is u32 */
1420
1421         memset(wstats, 0, sizeof(*wstats));
1422         wstats->status = netif_running(dev);
1423         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1424                                   &value, sizeof(value)))
1425                 wstats->discard.code += value;
1426         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1427                                   &value, sizeof(value)))
1428                 wstats->discard.code += value;
1429         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1430                                   &value, sizeof(value)))
1431                 wstats->discard.code += value;
1432         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1433                                   &value, sizeof(value)))
1434                 wstats->discard.retries = value;
1435         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1436                                   &value, sizeof(value)))
1437                 wstats->discard.misc += value;
1438         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1439                                   &value, sizeof(value)))
1440                 wstats->discard.misc += value;
1441         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1442                                   &value, sizeof(value)))
1443                 wstats->discard.misc += value;
1444         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1445                                   &value, sizeof(value)))
1446                 wstats->discard.misc += value;
1447         return wstats;
1448 }
1449
1450 static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1451 {
1452         strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
1453 }
1454
1455 static const struct ethtool_ops ops = {
1456         .get_drvinfo = wl3501_get_drvinfo
1457 };
1458
1459 /**
1460  * wl3501_detach - deletes a driver "instance"
1461  * @link - FILL_IN
1462  *
1463  * This deletes a driver "instance". The device is de-registered with Card
1464  * Services. If it has been released, all local data structures are freed.
1465  * Otherwise, the structures will be freed when the device is released.
1466  */
1467 static void wl3501_detach(struct pcmcia_device *link)
1468 {
1469         struct net_device *dev = link->priv;
1470
1471         /* If the device is currently configured and active, we won't actually
1472          * delete it yet.  Instead, it is marked so that when the release()
1473          * function is called, that will trigger a proper detach(). */
1474
1475         while (link->open > 0)
1476                 wl3501_close(dev);
1477
1478         netif_device_detach(dev);
1479         wl3501_release(link);
1480
1481         if (link->priv)
1482                 free_netdev(link->priv);
1483
1484         return;
1485 }
1486
1487 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1488                            union iwreq_data *wrqu, char *extra)
1489 {
1490         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1491         return 0;
1492 }
1493
1494 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1495                            union iwreq_data *wrqu, char *extra)
1496 {
1497         struct wl3501_card *this = netdev_priv(dev);
1498         int channel = wrqu->freq.m;
1499         int rc = -EINVAL;
1500
1501         if (iw_valid_channel(this->reg_domain, channel)) {
1502                 this->chan = channel;
1503                 rc = wl3501_reset(dev);
1504         }
1505         return rc;
1506 }
1507
1508 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1509                            union iwreq_data *wrqu, char *extra)
1510 {
1511         struct wl3501_card *this = netdev_priv(dev);
1512
1513         wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
1514         wrqu->freq.e = 1;
1515         return 0;
1516 }
1517
1518 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1519                            union iwreq_data *wrqu, char *extra)
1520 {
1521         int rc = -EINVAL;
1522
1523         if (wrqu->mode == IW_MODE_INFRA ||
1524             wrqu->mode == IW_MODE_ADHOC ||
1525             wrqu->mode == IW_MODE_AUTO) {
1526                 struct wl3501_card *this = netdev_priv(dev);
1527
1528                 this->net_type = wrqu->mode;
1529                 rc = wl3501_reset(dev);
1530         }
1531         return rc;
1532 }
1533
1534 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1535                            union iwreq_data *wrqu, char *extra)
1536 {
1537         struct wl3501_card *this = netdev_priv(dev);
1538
1539         wrqu->mode = this->net_type;
1540         return 0;
1541 }
1542
1543 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1544                            union iwreq_data *wrqu, char *extra)
1545 {
1546         struct wl3501_card *this = netdev_priv(dev);
1547
1548         wrqu->sens.value = this->rssi;
1549         wrqu->sens.disabled = !wrqu->sens.value;
1550         wrqu->sens.fixed = 1;
1551         return 0;
1552 }
1553
1554 static int wl3501_get_range(struct net_device *dev,
1555                             struct iw_request_info *info,
1556                             union iwreq_data *wrqu, char *extra)
1557 {
1558         struct iw_range *range = (struct iw_range *)extra;
1559
1560         /* Set the length (very important for backward compatibility) */
1561         wrqu->data.length = sizeof(*range);
1562
1563         /* Set all the info we don't care or don't know about to zero */
1564         memset(range, 0, sizeof(*range));
1565
1566         /* Set the Wireless Extension versions */
1567         range->we_version_compiled      = WIRELESS_EXT;
1568         range->we_version_source        = 1;
1569         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1570         /* FIXME: study the code to fill in more fields... */
1571         return 0;
1572 }
1573
1574 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1575                           union iwreq_data *wrqu, char *extra)
1576 {
1577         struct wl3501_card *this = netdev_priv(dev);
1578         static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
1579         int rc = -EINVAL;
1580
1581         /* FIXME: we support other ARPHRDs...*/
1582         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1583                 goto out;
1584         if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
1585                 /* FIXME: rescan? */
1586         } else
1587                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1588                 /* FIXME: rescan? deassoc & scan? */
1589         rc = 0;
1590 out:
1591         return rc;
1592 }
1593
1594 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1595                           union iwreq_data *wrqu, char *extra)
1596 {
1597         struct wl3501_card *this = netdev_priv(dev);
1598
1599         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1600         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1601         return 0;
1602 }
1603
1604 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1605                            union iwreq_data *wrqu, char *extra)
1606 {
1607         /*
1608          * FIXME: trigger scanning with a reset, yes, I'm lazy
1609          */
1610         return wl3501_reset(dev);
1611 }
1612
1613 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1614                            union iwreq_data *wrqu, char *extra)
1615 {
1616         struct wl3501_card *this = netdev_priv(dev);
1617         int i;
1618         char *current_ev = extra;
1619         struct iw_event iwe;
1620
1621         for (i = 0; i < this->bss_cnt; ++i) {
1622                 iwe.cmd                 = SIOCGIWAP;
1623                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1624                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
1625                 current_ev = iwe_stream_add_event(info, current_ev,
1626                                                   extra + IW_SCAN_MAX_DATA,
1627                                                   &iwe, IW_EV_ADDR_LEN);
1628                 iwe.cmd           = SIOCGIWESSID;
1629                 iwe.u.data.flags  = 1;
1630                 iwe.u.data.length = this->bss_set[i].ssid.el.len;
1631                 current_ev = iwe_stream_add_point(info, current_ev,
1632                                                   extra + IW_SCAN_MAX_DATA,
1633                                                   &iwe,
1634                                                   this->bss_set[i].ssid.essid);
1635                 iwe.cmd    = SIOCGIWMODE;
1636                 iwe.u.mode = this->bss_set[i].bss_type;
1637                 current_ev = iwe_stream_add_event(info, current_ev,
1638                                                   extra + IW_SCAN_MAX_DATA,
1639                                                   &iwe, IW_EV_UINT_LEN);
1640                 iwe.cmd = SIOCGIWFREQ;
1641                 iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
1642                 iwe.u.freq.e = 0;
1643                 current_ev = iwe_stream_add_event(info, current_ev,
1644                                                   extra + IW_SCAN_MAX_DATA,
1645                                                   &iwe, IW_EV_FREQ_LEN);
1646                 iwe.cmd = SIOCGIWENCODE;
1647                 if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1648                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1649                 else
1650                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1651                 iwe.u.data.length = 0;
1652                 current_ev = iwe_stream_add_point(info, current_ev,
1653                                                   extra + IW_SCAN_MAX_DATA,
1654                                                   &iwe, NULL);
1655         }
1656         /* Length of data */
1657         wrqu->data.length = (current_ev - extra);
1658         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1659         return 0;
1660 }
1661
1662 static int wl3501_set_essid(struct net_device *dev,
1663                             struct iw_request_info *info,
1664                             union iwreq_data *wrqu, char *extra)
1665 {
1666         struct wl3501_card *this = netdev_priv(dev);
1667
1668         if (wrqu->data.flags) {
1669                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1670                                          &this->essid.el,
1671                                          extra, wrqu->data.length);
1672         } else { /* We accept any ESSID */
1673                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1674                                          &this->essid.el, "ANY", 3);
1675         }
1676         return wl3501_reset(dev);
1677 }
1678
1679 static int wl3501_get_essid(struct net_device *dev,
1680                             struct iw_request_info *info,
1681                             union iwreq_data *wrqu, char *extra)
1682 {
1683         struct wl3501_card *this = netdev_priv(dev);
1684         unsigned long flags;
1685
1686         spin_lock_irqsave(&this->lock, flags);
1687         wrqu->essid.flags  = 1;
1688         wrqu->essid.length = this->essid.el.len;
1689         memcpy(extra, this->essid.essid, this->essid.el.len);
1690         spin_unlock_irqrestore(&this->lock, flags);
1691         return 0;
1692 }
1693
1694 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1695                            union iwreq_data *wrqu, char *extra)
1696 {
1697         struct wl3501_card *this = netdev_priv(dev);
1698
1699         if (wrqu->data.length > sizeof(this->nick))
1700                 return -E2BIG;
1701         strlcpy(this->nick, extra, wrqu->data.length);
1702         return 0;
1703 }
1704
1705 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1706                            union iwreq_data *wrqu, char *extra)
1707 {
1708         struct wl3501_card *this = netdev_priv(dev);
1709
1710         strlcpy(extra, this->nick, 32);
1711         wrqu->data.length = strlen(extra);
1712         return 0;
1713 }
1714
1715 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1716                            union iwreq_data *wrqu, char *extra)
1717 {
1718         /*
1719          * FIXME: have to see from where to get this info, perhaps this card
1720          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1721          * common with the Planet Access Points. -acme
1722          */
1723         wrqu->bitrate.value = 2000000;
1724         wrqu->bitrate.fixed = 1;
1725         return 0;
1726 }
1727
1728 static int wl3501_get_rts_threshold(struct net_device *dev,
1729                                     struct iw_request_info *info,
1730                                     union iwreq_data *wrqu, char *extra)
1731 {
1732         u16 threshold; /* size checked: it is u16 */
1733         struct wl3501_card *this = netdev_priv(dev);
1734         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1735                                       &threshold, sizeof(threshold));
1736         if (!rc) {
1737                 wrqu->rts.value = threshold;
1738                 wrqu->rts.disabled = threshold >= 2347;
1739                 wrqu->rts.fixed = 1;
1740         }
1741         return rc;
1742 }
1743
1744 static int wl3501_get_frag_threshold(struct net_device *dev,
1745                                      struct iw_request_info *info,
1746                                      union iwreq_data *wrqu, char *extra)
1747 {
1748         u16 threshold; /* size checked: it is u16 */
1749         struct wl3501_card *this = netdev_priv(dev);
1750         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1751                                       &threshold, sizeof(threshold));
1752         if (!rc) {
1753                 wrqu->frag.value = threshold;
1754                 wrqu->frag.disabled = threshold >= 2346;
1755                 wrqu->frag.fixed = 1;
1756         }
1757         return rc;
1758 }
1759
1760 static int wl3501_get_txpow(struct net_device *dev,
1761                             struct iw_request_info *info,
1762                             union iwreq_data *wrqu, char *extra)
1763 {
1764         u16 txpow;
1765         struct wl3501_card *this = netdev_priv(dev);
1766         int rc = wl3501_get_mib_value(this,
1767                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1768                                       &txpow, sizeof(txpow));
1769         if (!rc) {
1770                 wrqu->txpower.value = txpow;
1771                 wrqu->txpower.disabled = 0;
1772                 /*
1773                  * From the MIB values I think this can be configurable,
1774                  * as it lists several tx power levels -acme
1775                  */
1776                 wrqu->txpower.fixed = 0;
1777                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1778         }
1779         return rc;
1780 }
1781
1782 static int wl3501_get_retry(struct net_device *dev,
1783                             struct iw_request_info *info,
1784                             union iwreq_data *wrqu, char *extra)
1785 {
1786         u8 retry; /* size checked: it is u8 */
1787         struct wl3501_card *this = netdev_priv(dev);
1788         int rc = wl3501_get_mib_value(this,
1789                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1790                                       &retry, sizeof(retry));
1791         if (rc)
1792                 goto out;
1793         if (wrqu->retry.flags & IW_RETRY_LONG) {
1794                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1795                 goto set_value;
1796         }
1797         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1798                                   &retry, sizeof(retry));
1799         if (rc)
1800                 goto out;
1801         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1802 set_value:
1803         wrqu->retry.value = retry;
1804         wrqu->retry.disabled = 0;
1805 out:
1806         return rc;
1807 }
1808
1809 static int wl3501_get_encode(struct net_device *dev,
1810                              struct iw_request_info *info,
1811                              union iwreq_data *wrqu, char *extra)
1812 {
1813         u8 implemented, restricted, keys[100], len_keys, tocopy;
1814         struct wl3501_card *this = netdev_priv(dev);
1815         int rc = wl3501_get_mib_value(this,
1816                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1817                                       &implemented, sizeof(implemented));
1818         if (rc)
1819                 goto out;
1820         if (!implemented) {
1821                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1822                 goto out;
1823         }
1824         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1825                                   &restricted, sizeof(restricted));
1826         if (rc)
1827                 goto out;
1828         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1829                                             IW_ENCODE_OPEN;
1830         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1831                                   &len_keys, sizeof(len_keys));
1832         if (rc)
1833                 goto out;
1834         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1835                                   keys, len_keys);
1836         if (rc)
1837                 goto out;
1838         tocopy = min_t(u8, len_keys, wrqu->encoding.length);
1839         tocopy = min_t(u8, tocopy, 100);
1840         wrqu->encoding.length = tocopy;
1841         memcpy(extra, keys, tocopy);
1842 out:
1843         return rc;
1844 }
1845
1846 static int wl3501_get_power(struct net_device *dev,
1847                             struct iw_request_info *info,
1848                             union iwreq_data *wrqu, char *extra)
1849 {
1850         u8 pwr_state;
1851         struct wl3501_card *this = netdev_priv(dev);
1852         int rc = wl3501_get_mib_value(this,
1853                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1854                                       &pwr_state, sizeof(pwr_state));
1855         if (rc)
1856                 goto out;
1857         wrqu->power.disabled = !pwr_state;
1858         wrqu->power.flags = IW_POWER_ON;
1859 out:
1860         return rc;
1861 }
1862
1863 static const iw_handler wl3501_handler[] = {
1864         [SIOCGIWNAME    - SIOCIWFIRST] = wl3501_get_name,
1865         [SIOCSIWFREQ    - SIOCIWFIRST] = wl3501_set_freq,
1866         [SIOCGIWFREQ    - SIOCIWFIRST] = wl3501_get_freq,
1867         [SIOCSIWMODE    - SIOCIWFIRST] = wl3501_set_mode,
1868         [SIOCGIWMODE    - SIOCIWFIRST] = wl3501_get_mode,
1869         [SIOCGIWSENS    - SIOCIWFIRST] = wl3501_get_sens,
1870         [SIOCGIWRANGE   - SIOCIWFIRST] = wl3501_get_range,
1871         [SIOCSIWSPY     - SIOCIWFIRST] = iw_handler_set_spy,
1872         [SIOCGIWSPY     - SIOCIWFIRST] = iw_handler_get_spy,
1873         [SIOCSIWTHRSPY  - SIOCIWFIRST] = iw_handler_set_thrspy,
1874         [SIOCGIWTHRSPY  - SIOCIWFIRST] = iw_handler_get_thrspy,
1875         [SIOCSIWAP      - SIOCIWFIRST] = wl3501_set_wap,
1876         [SIOCGIWAP      - SIOCIWFIRST] = wl3501_get_wap,
1877         [SIOCSIWSCAN    - SIOCIWFIRST] = wl3501_set_scan,
1878         [SIOCGIWSCAN    - SIOCIWFIRST] = wl3501_get_scan,
1879         [SIOCSIWESSID   - SIOCIWFIRST] = wl3501_set_essid,
1880         [SIOCGIWESSID   - SIOCIWFIRST] = wl3501_get_essid,
1881         [SIOCSIWNICKN   - SIOCIWFIRST] = wl3501_set_nick,
1882         [SIOCGIWNICKN   - SIOCIWFIRST] = wl3501_get_nick,
1883         [SIOCGIWRATE    - SIOCIWFIRST] = wl3501_get_rate,
1884         [SIOCGIWRTS     - SIOCIWFIRST] = wl3501_get_rts_threshold,
1885         [SIOCGIWFRAG    - SIOCIWFIRST] = wl3501_get_frag_threshold,
1886         [SIOCGIWTXPOW   - SIOCIWFIRST] = wl3501_get_txpow,
1887         [SIOCGIWRETRY   - SIOCIWFIRST] = wl3501_get_retry,
1888         [SIOCGIWENCODE  - SIOCIWFIRST] = wl3501_get_encode,
1889         [SIOCGIWPOWER   - SIOCIWFIRST] = wl3501_get_power,
1890 };
1891
1892 static const struct iw_handler_def wl3501_handler_def = {
1893         .num_standard   = ARRAY_SIZE(wl3501_handler),
1894         .standard       = (iw_handler *)wl3501_handler,
1895         .get_wireless_stats = wl3501_get_wireless_stats,
1896 };
1897
1898 /**
1899  * wl3501_attach - creates an "instance" of the driver
1900  *
1901  * Creates an "instance" of the driver, allocating local data structures for
1902  * one device.  The device is registered with Card Services.
1903  *
1904  * The dev_link structure is initialized, but we don't actually configure the
1905  * card at this point -- we wait until we receive a card insertion event.
1906  */
1907 static int wl3501_probe(struct pcmcia_device *p_dev)
1908 {
1909         struct net_device *dev;
1910         struct wl3501_card *this;
1911
1912         /* The io structure describes IO port mapping */
1913         p_dev->io.NumPorts1     = 16;
1914         p_dev->io.Attributes1   = IO_DATA_PATH_WIDTH_8;
1915         p_dev->io.IOAddrLines   = 5;
1916
1917         /* Interrupt setup */
1918         p_dev->irq.Attributes   = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
1919         p_dev->irq.IRQInfo1     = IRQ_LEVEL_ID;
1920         p_dev->irq.Handler = wl3501_interrupt;
1921
1922         /* General socket configuration */
1923         p_dev->conf.Attributes  = CONF_ENABLE_IRQ;
1924         p_dev->conf.IntType     = INT_MEMORY_AND_IO;
1925         p_dev->conf.ConfigIndex = 1;
1926
1927         dev = alloc_etherdev(sizeof(struct wl3501_card));
1928         if (!dev)
1929                 goto out_link;
1930         dev->open               = wl3501_open;
1931         dev->stop               = wl3501_close;
1932         dev->hard_start_xmit    = wl3501_hard_start_xmit;
1933         dev->tx_timeout         = wl3501_tx_timeout;
1934         dev->watchdog_timeo     = 5 * HZ;
1935         dev->get_stats          = wl3501_get_stats;
1936         this = netdev_priv(dev);
1937         this->wireless_data.spy_data = &this->spy_data;
1938         this->p_dev = p_dev;
1939         dev->wireless_data      = &this->wireless_data;
1940         dev->wireless_handlers  = (struct iw_handler_def *)&wl3501_handler_def;
1941         SET_ETHTOOL_OPS(dev, &ops);
1942         netif_stop_queue(dev);
1943         p_dev->priv = p_dev->irq.Instance = dev;
1944
1945         return wl3501_config(p_dev);
1946 out_link:
1947         return -ENOMEM;
1948 }
1949
1950 #define CS_CHECK(fn, ret) \
1951 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
1952
1953 /**
1954  * wl3501_config - configure the PCMCIA socket and make eth device available
1955  * @link - FILL_IN
1956  *
1957  * wl3501_config() is scheduled to run after a CARD_INSERTION event is
1958  * received, to configure the PCMCIA socket, and to make the ethernet device
1959  * available to the system.
1960  */
1961 static int wl3501_config(struct pcmcia_device *link)
1962 {
1963         struct net_device *dev = link->priv;
1964         int i = 0, j, last_fn, last_ret;
1965         struct wl3501_card *this;
1966
1967         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1968          * want, you can also read the card's config table to pick addresses --
1969          * see the serial driver for an example. */
1970
1971         for (j = 0x280; j < 0x400; j += 0x20) {
1972                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1973                  * 0x200-0x2ff, and so on, because this seems safer */
1974                 link->io.BasePort1 = j;
1975                 link->io.BasePort2 = link->io.BasePort1 + 0x10;
1976                 i = pcmcia_request_io(link, &link->io);
1977                 if (i == 0)
1978                         break;
1979         }
1980         if (i != 0) {
1981                 cs_error(link, RequestIO, i);
1982                 goto failed;
1983         }
1984
1985         /* Now allocate an interrupt line. Note that this does not actually
1986          * assign a handler to the interrupt. */
1987
1988         CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
1989
1990         /* This actually configures the PCMCIA socket -- setting up the I/O
1991          * windows and the interrupt mapping.  */
1992
1993         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1994
1995         dev->irq = link->irq.AssignedIRQ;
1996         dev->base_addr = link->io.BasePort1;
1997         SET_NETDEV_DEV(dev, &handle_to_dev(link));
1998         if (register_netdev(dev)) {
1999                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
2000                 goto failed;
2001         }
2002
2003         this = netdev_priv(dev);
2004         /*
2005          * At this point, the dev_node_t structure(s) should be initialized and
2006          * arranged in a linked list at link->dev_node.
2007          */
2008         link->dev_node = &this->node;
2009
2010         this->base_addr = dev->base_addr;
2011
2012         if (!wl3501_get_flash_mac_addr(this)) {
2013                 printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
2014                        dev->name);
2015                 goto failed;
2016         }
2017         strcpy(this->node.dev_name, dev->name);
2018
2019         for (i = 0; i < 6; i++)
2020                 dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
2021
2022         /* print probe information */
2023         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
2024                "MAC addr in flash ROM:%pM\n",
2025                dev->name, this->base_addr, (int)dev->irq,
2026                dev->dev_addr);
2027         /*
2028          * Initialize card parameters - added by jss
2029          */
2030         this->net_type          = IW_MODE_INFRA;
2031         this->bss_cnt           = 0;
2032         this->join_sta_bss      = 0;
2033         this->adhoc_times       = 0;
2034         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
2035                                  "ANY", 3);
2036         this->card_name[0]      = '\0';
2037         this->firmware_date[0]  = '\0';
2038         this->rssi              = 255;
2039         this->chan              = iw_default_channel(this->reg_domain);
2040         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
2041         spin_lock_init(&this->lock);
2042         init_waitqueue_head(&this->wait);
2043         netif_start_queue(dev);
2044         return 0;
2045
2046 cs_failed:
2047         cs_error(link, last_fn, last_ret);
2048 failed:
2049         wl3501_release(link);
2050         return -ENODEV;
2051 }
2052
2053 /**
2054  * wl3501_release - unregister the net, release PCMCIA configuration
2055  * @arg - link
2056  *
2057  * After a card is removed, wl3501_release() will unregister the net device,
2058  * and release the PCMCIA configuration.  If the device is still open, this
2059  * will be postponed until it is closed.
2060  */
2061 static void wl3501_release(struct pcmcia_device *link)
2062 {
2063         struct net_device *dev = link->priv;
2064
2065         /* Unlink the device chain */
2066         if (link->dev_node)
2067                 unregister_netdev(dev);
2068
2069         pcmcia_disable_device(link);
2070 }
2071
2072 static int wl3501_suspend(struct pcmcia_device *link)
2073 {
2074         struct net_device *dev = link->priv;
2075
2076         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
2077         if (link->open)
2078                 netif_device_detach(dev);
2079
2080         return 0;
2081 }
2082
2083 static int wl3501_resume(struct pcmcia_device *link)
2084 {
2085         struct net_device *dev = link->priv;
2086
2087         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2088         if (link->open) {
2089                 wl3501_reset(dev);
2090                 netif_device_attach(dev);
2091         }
2092
2093         return 0;
2094 }
2095
2096
2097 static struct pcmcia_device_id wl3501_ids[] = {
2098         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2099         PCMCIA_DEVICE_NULL
2100 };
2101 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2102
2103 static struct pcmcia_driver wl3501_driver = {
2104         .owner          = THIS_MODULE,
2105         .drv            = {
2106                 .name   = "wl3501_cs",
2107         },
2108         .probe          = wl3501_probe,
2109         .remove         = wl3501_detach,
2110         .id_table       = wl3501_ids,
2111         .suspend        = wl3501_suspend,
2112         .resume         = wl3501_resume,
2113 };
2114
2115 static int __init wl3501_init_module(void)
2116 {
2117         return pcmcia_register_driver(&wl3501_driver);
2118 }
2119
2120 static void __exit wl3501_exit_module(void)
2121 {
2122         pcmcia_unregister_driver(&wl3501_driver);
2123 }
2124
2125 module_init(wl3501_init_module);
2126 module_exit(wl3501_exit_module);
2127
2128 MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
2129               "Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
2130               "Gustavo Niemeyer <niemeyer@conectiva.com>");
2131 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2132 MODULE_LICENSE("GPL");