drivers/net/wireless/wl3501_cs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * WL3501 Wireless LAN PCMCIA Card Driver for Linux
   4  * Written originally for Linux 2.0.30 by Fox Chen, [email protected]
   5  * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <[email protected]>
   6  * Wireless extensions in 2.4 by Gustavo Niemeyer <[email protected]>
   7  *
   8  * References used by Fox Chen while writing the original driver for 2.0.30:
   9  *
  10  *   1. WL24xx packet drivers (tooasm.asm)
  11  *   2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
  12  *   3. IEEE 802.11
  13  *   4. Linux network driver (/usr/src/linux/drivers/net)
  14  *   5. ISA card driver - wl24.c
  15  *   6. Linux PCMCIA skeleton driver - skeleton.c
  16  *   7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
  17  *
  18  * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
  19  *   1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
  20  *      rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
  21  *      (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
  22  *       ETHER/IP/UDP/TCP header, and acknowledgement overhead)
  23  *
  24  * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
  25  * 173 Kbytes/s in TCP.
  26  *
  27  * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
  28  * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
  29  */
  30
  31 #include <linux/delay.h>
  32 #include <linux/types.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/in.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/fcntl.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/ioport.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/skbuff.h>
  43 #include <linux/slab.h>
  44 #include <linux/string.h>
  45 #include <linux/wireless.h>
  46 #include <net/cfg80211.h>
  47
  48 #include <net/iw_handler.h>
  49
  50 #include <pcmcia/cistpl.h>
  51 #include <pcmcia/cisreg.h>
  52 #include <pcmcia/ds.h>
  53
  54 #include <asm/io.h>
  55 #include <linux/uaccess.h>
  56
  57 #include "wl3501.h"
  58
  59 #ifndef __i386__
  60 #define slow_down_io()
  61 #endif
  62
  63 /* For rough constant delay */
  64 #define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
  65
  66
  67
  68 #define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
  69 #define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
  70 #define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
  71
  72 #define WL3501_RELEASE_TIMEOUT (25 * HZ)
  73 #define WL3501_MAX_ADHOC_TRIES 16
  74
  75 #define WL3501_RESUME   0
  76 #define WL3501_SUSPEND  1
  77
  78 static int wl3501_config(struct pcmcia_device *link);
  79 static void wl3501_release(struct pcmcia_device *link);
  80
  81 static const struct {
  82         int reg_domain;
  83         int min, max, deflt;
  84 } iw_channel_table[] = {
  85         {
  86                 .reg_domain = IW_REG_DOMAIN_FCC,
  87                 .min        = 1,
  88                 .max        = 11,
  89                 .deflt      = 1,
  90         },
  91         {
  92                 .reg_domain = IW_REG_DOMAIN_DOC,
  93                 .min        = 1,
  94                 .max        = 11,
  95                 .deflt      = 1,
  96         },
  97         {
  98                 .reg_domain = IW_REG_DOMAIN_ETSI,
  99                 .min        = 1,
 100                 .max        = 13,
 101                 .deflt      = 1,
 102         },
 103         {
 104                 .reg_domain = IW_REG_DOMAIN_SPAIN,
 105                 .min        = 10,
 106                 .max        = 11,
 107                 .deflt      = 10,
 108         },
 109         {
 110                 .reg_domain = IW_REG_DOMAIN_FRANCE,
 111                 .min        = 10,
 112                 .max        = 13,
 113                 .deflt      = 10,
 114         },
 115         {
 116                 .reg_domain = IW_REG_DOMAIN_MKK,
 117                 .min        = 14,
 118                 .max        = 14,
 119                 .deflt      = 14,
 120         },
 121         {
 122                 .reg_domain = IW_REG_DOMAIN_MKK1,
 123                 .min        = 1,
 124                 .max        = 14,
 125                 .deflt      = 1,
 126         },
 127         {
 128                 .reg_domain = IW_REG_DOMAIN_ISRAEL,
 129                 .min        = 3,
 130                 .max        = 9,
 131                 .deflt      = 9,
 132         },
 133 };
 134
 135 /**
 136  * iw_valid_channel - validate channel in regulatory domain
 137  * @reg_domain: regulatory domain
 138  * @channel: channel to validate
 139  *
 140  * Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
 141  */
 142 static int iw_valid_channel(int reg_domain, int channel)
 143 {
 144         int i, rc = 0;
 145
 146         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 147                 if (reg_domain == iw_channel_table[i].reg_domain) {
 148                         rc = channel >= iw_channel_table[i].min &&
 149                              channel <= iw_channel_table[i].max;
 150                         break;
 151                 }
 152         return rc;
 153 }
 154
 155 /**
 156  * iw_default_channel - get default channel for a regulatory domain
 157  * @reg_domain: regulatory domain
 158  *
 159  * Returns the default channel for a regulatory domain
 160  */
 161 static int iw_default_channel(int reg_domain)
 162 {
 163         int i, rc = 1;
 164
 165         for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
 166                 if (reg_domain == iw_channel_table[i].reg_domain) {
 167                         rc = iw_channel_table[i].deflt;
 168                         break;
 169                 }
 170         return rc;
 171 }
 172
 173 static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
 174                                      struct iw_mgmt_info_element *el,
 175                                      void *value, int len)
 176 {
 177         el->id  = id;
 178         el->len = len;
 179         memcpy(el->data, value, len);
 180 }
 181
 182 static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
 183                                       struct iw_mgmt_info_element *from)
 184 {
 185         iw_set_mgmt_info_element(from->id, to, from->data, from->len);
 186 }
 187
 188 static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
 189 {
 190         wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
 191 }
 192
 193 /*
 194  * Get Ethernet MAC address.
 195  *
 196  * WARNING: We switch to FPAGE0 and switc back again.
 197  *          Making sure there is no other WL function beening called by ISR.
 198  */
 199 static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
 200 {
 201         int base_addr = this->base_addr;
 202
 203         /* get MAC addr */
 204         wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
 205         wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
 206         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
 207
 208         /* wait for reading EEPROM */
 209         WL3501_NOPLOOP(100);
 210         this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
 211         WL3501_NOPLOOP(100);
 212         this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
 213         WL3501_NOPLOOP(100);
 214         this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
 215         WL3501_NOPLOOP(100);
 216         this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
 217         WL3501_NOPLOOP(100);
 218         this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
 219         WL3501_NOPLOOP(100);
 220         this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
 221         WL3501_NOPLOOP(100);
 222         this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
 223         WL3501_NOPLOOP(100);
 224         wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
 225         wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
 226         wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
 227         WL3501_NOPLOOP(100);
 228         this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
 229         WL3501_NOPLOOP(100);
 230         this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
 231         /* switch to SRAM Page 0 (for safety) */
 232         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
 233
 234         /* The MAC addr should be 00:60:... */
 235         return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
 236 }
 237
 238 /**
 239  * wl3501_set_to_wla - Move 'size' bytes from PC to card
 240  * @this: Card
 241  * @dest: Card addressing space
 242  * @src: PC addressing space
 243  * @size: Bytes to move
 244  *
 245  * Move 'size' bytes from PC to card. (Shouldn't be interrupted)
 246  */
 247 static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
 248                               int size)
 249 {
 250         /* switch to SRAM Page 0 */
 251         wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
 252                                                    WL3501_BSS_SPAGE0);
 253         /* set LMAL and LMAH */
 254         wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
 255         wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
 256
 257         /* rep out to Port A */
 258         wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
 259 }
 260
 261 /**
 262  * wl3501_get_from_wla - Move 'size' bytes from card to PC
 263  * @this: Card
 264  * @src: Card addressing space
 265  * @dest: PC addressing space
 266  * @size: Bytes to move
 267  *
 268  * Move 'size' bytes from card to PC. (Shouldn't be interrupted)
 269  */
 270 static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
 271                                 int size)
 272 {
 273         /* switch to SRAM Page 0 */
 274         wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
 275                                                   WL3501_BSS_SPAGE0);
 276         /* set LMAL and LMAH */
 277         wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
 278         wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
 279
 280         /* rep get from Port A */
 281         insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
 282 }
 283
 284 /*
 285  * Get/Allocate a free Tx Data Buffer
 286  *
 287  *  *--------------*-----------------*----------------------------------*
 288  *  |    PLCP      |    MAC Header   |  DST  SRC         Data ...       |
 289  *  |  (24 bytes)  |    (30 bytes)   |  (6)  (6)  (Ethernet Row Data)   |
 290  *  *--------------*-----------------*----------------------------------*
 291  *  \               \- IEEE 802.11 -/ \-------------- len --------------/
 292  *   \-struct wl3501_80211_tx_hdr--/   \-------- Ethernet Frame -------/
 293  *
 294  * Return = Position in Card
 295  */
 296 static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
 297 {
 298         u16 next, blk_cnt = 0, zero = 0;
 299         u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
 300         u16 ret = 0;
 301
 302         if (full_len > this->tx_buffer_cnt * 254)
 303                 goto out;
 304         ret = this->tx_buffer_head;
 305         while (full_len) {
 306                 if (full_len < 254)
 307                         full_len = 0;
 308                 else
 309                         full_len -= 254;
 310                 wl3501_get_from_wla(this, this->tx_buffer_head, &next,
 311                                     sizeof(next));
 312                 if (!full_len)
 313                         wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
 314                                           sizeof(zero));
 315                 this->tx_buffer_head = next;
 316                 blk_cnt++;
 317                 /* if buffer is not enough */
 318                 if (!next && full_len) {
 319                         this->tx_buffer_head = ret;
 320                         ret = 0;
 321                         goto out;
 322                 }
 323         }
 324         this->tx_buffer_cnt -= blk_cnt;
 325 out:
 326         return ret;
 327 }
 328
 329 /*
 330  * Free an allocated Tx Buffer. ptr must be correct position.
 331  */
 332 static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
 333 {
 334         /* check if all space is not free */
 335         if (!this->tx_buffer_head)
 336                 this->tx_buffer_head = ptr;
 337         else
 338                 wl3501_set_to_wla(this, this->tx_buffer_tail,
 339                                   &ptr, sizeof(ptr));
 340         while (ptr) {
 341                 u16 next;
 342
 343                 this->tx_buffer_cnt++;
 344                 wl3501_get_from_wla(this, ptr, &next, sizeof(next));
 345                 this->tx_buffer_tail = ptr;
 346                 ptr = next;
 347         }
 348 }
 349
 350 static int wl3501_esbq_req_test(struct wl3501_card *this)
 351 {
 352         u8 tmp = 0;
 353
 354         wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
 355         return tmp & 0x80;
 356 }
 357
 358 static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
 359 {
 360         u16 tmp = 0;
 361
 362         wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
 363         wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
 364         this->esbq_req_head += 4;
 365         if (this->esbq_req_head >= this->esbq_req_end)
 366                 this->esbq_req_head = this->esbq_req_start;
 367 }
 368
 369 static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
 370 {
 371         int rc = -EIO;
 372
 373         if (wl3501_esbq_req_test(this)) {
 374                 u16 ptr = wl3501_get_tx_buffer(this, sig_size);
 375                 if (ptr) {
 376                         wl3501_set_to_wla(this, ptr, sig, sig_size);
 377                         wl3501_esbq_req(this, &ptr);
 378                         rc = 0;
 379                 }
 380         }
 381         return rc;
 382 }
 383
 384 static int wl3501_request_mib(struct wl3501_card *this, u8 index, void *bf)
 385 {
 386         struct wl3501_get_req sig = {
 387                 .sig_id     = WL3501_SIG_GET_REQ,
 388                 .mib_attrib = index,
 389         };
 390         unsigned long flags;
 391         int rc = -EIO;
 392
 393         spin_lock_irqsave(&this->lock, flags);
 394         if (wl3501_esbq_req_test(this)) {
 395                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 396                 if (ptr) {
 397                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 398                         wl3501_esbq_req(this, &ptr);
 399                         this->sig_get_confirm.mib_status = 255;
 400                         rc = 0;
 401                 }
 402         }
 403         spin_unlock_irqrestore(&this->lock, flags);
 404
 405         return rc;
 406 }
 407
 408 static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
 409                                 void *bf, int size)
 410 {
 411         int rc;
 412
 413         rc = wl3501_request_mib(this, index, bf);
 414         if (rc)
 415                 return rc;
 416
 417         rc = wait_event_interruptible(this->wait,
 418                 this->sig_get_confirm.mib_status != 255);
 419         if (rc)
 420                 return rc;
 421
 422         memcpy(bf, this->sig_get_confirm.mib_value, size);
 423         return 0;
 424 }
 425
 426 static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
 427 {
 428         struct wl3501_pwr_mgmt_req sig = {
 429                 .sig_id         = WL3501_SIG_PWR_MGMT_REQ,
 430                 .pwr_save       = suspend,
 431                 .wake_up        = !suspend,
 432                 .receive_dtims  = 10,
 433         };
 434         unsigned long flags;
 435         int rc = -EIO;
 436
 437         spin_lock_irqsave(&this->lock, flags);
 438         if (wl3501_esbq_req_test(this)) {
 439                 u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
 440                 if (ptr) {
 441                         wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
 442                         wl3501_esbq_req(this, &ptr);
 443                         this->sig_pwr_mgmt_confirm.status = 255;
 444                         spin_unlock_irqrestore(&this->lock, flags);
 445                         rc = wait_event_interruptible(this->wait,
 446                                 this->sig_pwr_mgmt_confirm.status != 255);
 447                         printk(KERN_INFO "%s: %s status=%d\n", __func__,
 448                                suspend ? "suspend" : "resume",
 449                                this->sig_pwr_mgmt_confirm.status);
 450                         goto out;
 451                 }
 452         }
 453         spin_unlock_irqrestore(&this->lock, flags);
 454 out:
 455         return rc;
 456 }
 457
 458 /**
 459  * wl3501_send_pkt - Send a packet.
 460  * @this: Card
 461  * @data: Ethernet raw frame.  (e.g. data[0] - data[5] is Dest MAC Addr,
 462  *                                   data[6] - data[11] is Src MAC Addr)
 463  * @len: Packet length
 464  * Ref: IEEE 802.11
 465  */
 466 static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 467 {
 468         u16 bf, sig_bf, next, tmplen, pktlen;
 469         struct wl3501_md_req sig = {
 470                 .sig_id = WL3501_SIG_MD_REQ,
 471         };
 472         size_t sig_addr_len = sizeof(sig.addr);
 473         u8 *pdata = (char *)data;
 474         int rc = -EIO;
 475
 476         if (wl3501_esbq_req_test(this)) {
 477                 sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
 478                 rc = -ENOMEM;
 479                 if (!sig_bf)    /* No free buffer available */
 480                         goto out;
 481                 bf = wl3501_get_tx_buffer(this, len + 26 + 24);
 482                 if (!bf) {
 483                         /* No free buffer available */
 484                         wl3501_free_tx_buffer(this, sig_bf);
 485                         goto out;
 486                 }
 487                 rc = 0;
 488                 memcpy(&sig.addr, pdata, sig_addr_len);
 489                 pktlen = len - sig_addr_len;
 490                 pdata += sig_addr_len;
 491                 sig.data = bf;
 492                 if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 493                         u8 addr4[ETH_ALEN] = {
 494                                 [0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
 495                         };
 496
 497                         wl3501_set_to_wla(this, bf + 2 +
 498                                           offsetof(struct wl3501_tx_hdr, addr4),
 499                                           addr4, sizeof(addr4));
 500                         sig.size = pktlen + 24 + 4 + 6;
 501                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
 502                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr);
 503                                 pktlen -= tmplen;
 504                         } else {
 505                                 tmplen = pktlen;
 506                                 pktlen = 0;
 507                         }
 508                         wl3501_set_to_wla(this,
 509                                           bf + 2 + sizeof(struct wl3501_tx_hdr),
 510                                           pdata, tmplen);
 511                         pdata += tmplen;
 512                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 513                         bf = next;
 514                 } else {
 515                         sig.size = pktlen + 24 + 4 - 2;
 516                         pdata += 2;
 517                         pktlen -= 2;
 518                         if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
 519                                 tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
 520                                 pktlen -= tmplen;
 521                         } else {
 522                                 tmplen = pktlen;
 523                                 pktlen = 0;
 524                         }
 525                         wl3501_set_to_wla(this, bf + 2 +
 526                                           offsetof(struct wl3501_tx_hdr, addr4),
 527                                           pdata, tmplen);
 528                         pdata += tmplen;
 529                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 530                         bf = next;
 531                 }
 532                 while (pktlen > 0) {
 533                         if (pktlen > 254) {
 534                                 tmplen = 254;
 535                                 pktlen -= 254;
 536                         } else {
 537                                 tmplen = pktlen;
 538                                 pktlen = 0;
 539                         }
 540                         wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
 541                         pdata += tmplen;
 542                         wl3501_get_from_wla(this, bf, &next, sizeof(next));
 543                         bf = next;
 544                 }
 545                 wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
 546                 wl3501_esbq_req(this, &sig_bf);
 547         }
 548 out:
 549         return rc;
 550 }
 551
 552 static int wl3501_mgmt_resync(struct wl3501_card *this)
 553 {
 554         struct wl3501_resync_req sig = {
 555                 .sig_id = WL3501_SIG_RESYNC_REQ,
 556         };
 557
 558         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 559 }
 560
 561 static inline int wl3501_fw_bss_type(struct wl3501_card *this)
 562 {
 563         return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
 564                                                  WL3501_NET_TYPE_ADHOC;
 565 }
 566
 567 static inline int wl3501_fw_cap_info(struct wl3501_card *this)
 568 {
 569         return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
 570                                                  WL3501_MGMT_CAPABILITY_IBSS;
 571 }
 572
 573 static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
 574 {
 575         struct wl3501_scan_req sig = {
 576                 .sig_id         = WL3501_SIG_SCAN_REQ,
 577                 .scan_type      = WL3501_SCAN_TYPE_ACTIVE,
 578                 .probe_delay    = 0x10,
 579                 .min_chan_time  = chan_time,
 580                 .max_chan_time  = chan_time,
 581                 .bss_type       = wl3501_fw_bss_type(this),
 582         };
 583
 584         this->bss_cnt = this->join_sta_bss = 0;
 585         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 586 }
 587
 588 static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 589 {
 590         struct wl3501_join_req sig = {
 591                 .sig_id           = WL3501_SIG_JOIN_REQ,
 592                 .timeout          = 10,
 593                 .req.ds_pset = {
 594                         .el = {
 595                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 596                                 .len = 1,
 597                         },
 598                         .chan   = this->chan,
 599                 },
 600         };
 601
 602         memcpy(&sig.req, &this->bss_set[stas].req, sizeof(sig.req));
 603         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 604 }
 605
 606 static int wl3501_mgmt_start(struct wl3501_card *this)
 607 {
 608         struct wl3501_start_req sig = {
 609                 .sig_id                 = WL3501_SIG_START_REQ,
 610                 .beacon_period          = 400,
 611                 .dtim_period            = 1,
 612                 .ds_pset = {
 613                         .el = {
 614                                 .id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 615                                 .len = 1,
 616                         },
 617                         .chan   = this->chan,
 618                 },
 619                 .bss_basic_rset = {
 620                         .el = {
 621                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 622                                 .len = 2,
 623                         },
 624                         .data_rate_labels = {
 625                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 626                                       IW_MGMT_RATE_LABEL_1MBIT,
 627                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 628                                       IW_MGMT_RATE_LABEL_2MBIT,
 629                         },
 630                 },
 631                 .operational_rset       = {
 632                         .el = {
 633                                 .id     = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
 634                                 .len = 2,
 635                         },
 636                         .data_rate_labels = {
 637                                 [0] = IW_MGMT_RATE_LABEL_MANDATORY |
 638                                       IW_MGMT_RATE_LABEL_1MBIT,
 639                                 [1] = IW_MGMT_RATE_LABEL_MANDATORY |
 640                                       IW_MGMT_RATE_LABEL_2MBIT,
 641                         },
 642                 },
 643                 .ibss_pset              = {
 644                         .el = {
 645                                 .id      = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
 646                                 .len     = 2,
 647                         },
 648                         .atim_window = 10,
 649                 },
 650                 .bss_type               = wl3501_fw_bss_type(this),
 651                 .cap_info               = wl3501_fw_cap_info(this),
 652         };
 653
 654         iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
 655         iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
 656         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 657 }
 658
 659 static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 660 {
 661         u16 i = 0;
 662         int matchflag = 0;
 663         struct wl3501_scan_confirm sig;
 664
 665         pr_debug("entry");
 666         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 667         if (sig.status == WL3501_STATUS_SUCCESS) {
 668                 pr_debug("success");
 669                 if ((this->net_type == IW_MODE_INFRA &&
 670                      (sig.req.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 671                     (this->net_type == IW_MODE_ADHOC &&
 672                      (sig.req.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 673                     this->net_type == IW_MODE_AUTO) {
 674                         if (!this->essid.el.len)
 675                                 matchflag = 1;
 676                         else if (this->essid.el.len == 3 &&
 677                                  !memcmp(this->essid.essid, "ANY", 3))
 678                                 matchflag = 1;
 679                         else if (this->essid.el.len != sig.req.ssid.el.len)
 680                                 matchflag = 0;
 681                         else if (memcmp(this->essid.essid, sig.req.ssid.essid,
 682                                         this->essid.el.len))
 683                                 matchflag = 0;
 684                         else
 685                                 matchflag = 1;
 686                         if (matchflag) {
 687                                 for (i = 0; i < this->bss_cnt; i++) {
 688                                         if (ether_addr_equal_unaligned(this->bss_set[i].req.bssid,
 689                                                                        sig.req.bssid)) {
 690                                                 matchflag = 0;
 691                                                 break;
 692                                         }
 693                                 }
 694                         }
 695                         if (matchflag && (i < 20)) {
 696                                 memcpy(&this->bss_set[i].req,
 697                                        &sig.req, sizeof(sig.req));
 698                                 this->bss_cnt++;
 699                                 this->rssi = sig.rssi;
 700                                 this->bss_set[i].rssi = sig.rssi;
 701                         }
 702                 }
 703         } else if (sig.status == WL3501_STATUS_TIMEOUT) {
 704                 pr_debug("timeout");
 705                 this->join_sta_bss = 0;
 706                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 707                         if (!wl3501_mgmt_join(this, i))
 708                                 break;
 709                 this->join_sta_bss = i;
 710                 if (this->join_sta_bss == this->bss_cnt) {
 711                         if (this->net_type == IW_MODE_INFRA)
 712                                 wl3501_mgmt_scan(this, 100);
 713                         else {
 714                                 this->adhoc_times++;
 715                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 716                                         wl3501_mgmt_start(this);
 717                                 else
 718                                         wl3501_mgmt_scan(this, 100);
 719                         }
 720                 }
 721         }
 722 }
 723
 724 /**
 725  * wl3501_block_interrupt - Mask interrupt from SUTRO
 726  * @this: Card
 727  *
 728  * Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
 729  * Return: 1 if interrupt is originally enabled
 730  */
 731 static int wl3501_block_interrupt(struct wl3501_card *this)
 732 {
 733         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 734         u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
 735                         WL3501_GCR_ENECINT));
 736
 737         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 738         return old & WL3501_GCR_ENECINT;
 739 }
 740
 741 /**
 742  * wl3501_unblock_interrupt - Enable interrupt from SUTRO
 743  * @this: Card
 744  *
 745  * Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
 746  * Return: 1 if interrupt is originally enabled
 747  */
 748 static int wl3501_unblock_interrupt(struct wl3501_card *this)
 749 {
 750         u8 old = inb(this->base_addr + WL3501_NIC_GCR);
 751         u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
 752                   WL3501_GCR_ENECINT;
 753
 754         wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
 755         return old & WL3501_GCR_ENECINT;
 756 }
 757
 758 /**
 759  * wl3501_receive - Receive data from Receive Queue.
 760  *
 761  * Receive data from Receive Queue.
 762  *
 763  * @this: card
 764  * @bf: address of host
 765  * @size: size of buffer.
 766  */
 767 static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
 768 {
 769         u16 next_addr, next_addr1;
 770         u8 *data = bf + 12;
 771
 772         size -= 12;
 773         wl3501_get_from_wla(this, this->start_seg + 2,
 774                             &next_addr, sizeof(next_addr));
 775         if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
 776                 wl3501_get_from_wla(this,
 777                                     this->start_seg +
 778                                         sizeof(struct wl3501_rx_hdr), data,
 779                                     WL3501_BLKSZ -
 780                                         sizeof(struct wl3501_rx_hdr));
 781                 size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 782                 data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
 783         } else {
 784                 wl3501_get_from_wla(this,
 785                                     this->start_seg +
 786                                         sizeof(struct wl3501_rx_hdr),
 787                                     data, size);
 788                 size = 0;
 789         }
 790         while (size > 0) {
 791                 if (size > WL3501_BLKSZ - 5) {
 792                         wl3501_get_from_wla(this, next_addr + 5, data,
 793                                             WL3501_BLKSZ - 5);
 794                         size -= WL3501_BLKSZ - 5;
 795                         data += WL3501_BLKSZ - 5;
 796                         wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
 797                                             sizeof(next_addr1));
 798                         next_addr = next_addr1;
 799                 } else {
 800                         wl3501_get_from_wla(this, next_addr + 5, data, size);
 801                         size = 0;
 802                 }
 803         }
 804         return 0;
 805 }
 806
 807 static void wl3501_esbq_req_free(struct wl3501_card *this)
 808 {
 809         u8 tmp;
 810         u16 addr;
 811
 812         if (this->esbq_req_head == this->esbq_req_tail)
 813                 goto out;
 814         wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
 815         if (!(tmp & 0x80))
 816                 goto out;
 817         wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
 818         wl3501_free_tx_buffer(this, addr);
 819         this->esbq_req_tail += 4;
 820         if (this->esbq_req_tail >= this->esbq_req_end)
 821                 this->esbq_req_tail = this->esbq_req_start;
 822 out:
 823         return;
 824 }
 825
 826 static int wl3501_esbq_confirm(struct wl3501_card *this)
 827 {
 828         u8 tmp;
 829
 830         wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 831         return tmp & 0x80;
 832 }
 833
 834 static void wl3501_online(struct net_device *dev)
 835 {
 836         struct wl3501_card *this = netdev_priv(dev);
 837
 838         printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
 839                dev->name, this->bssid);
 840         netif_wake_queue(dev);
 841 }
 842
 843 static void wl3501_esbq_confirm_done(struct wl3501_card *this)
 844 {
 845         u8 tmp = 0;
 846
 847         wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
 848         this->esbq_confirm += 4;
 849         if (this->esbq_confirm >= this->esbq_confirm_end)
 850                 this->esbq_confirm = this->esbq_confirm_start;
 851 }
 852
 853 static int wl3501_mgmt_auth(struct wl3501_card *this)
 854 {
 855         struct wl3501_auth_req sig = {
 856                 .sig_id  = WL3501_SIG_AUTH_REQ,
 857                 .type    = WL3501_SYS_TYPE_OPEN,
 858                 .timeout = 1000,
 859         };
 860
 861         pr_debug("entry");
 862         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 863         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 864 }
 865
 866 static int wl3501_mgmt_association(struct wl3501_card *this)
 867 {
 868         struct wl3501_assoc_req sig = {
 869                 .sig_id          = WL3501_SIG_ASSOC_REQ,
 870                 .timeout         = 1000,
 871                 .listen_interval = 5,
 872                 .cap_info        = this->cap_info,
 873         };
 874
 875         pr_debug("entry");
 876         memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
 877         return wl3501_esbq_exec(this, &sig, sizeof(sig));
 878 }
 879
 880 static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 881 {
 882         struct wl3501_card *this = netdev_priv(dev);
 883         struct wl3501_join_confirm sig;
 884
 885         pr_debug("entry");
 886         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 887         if (sig.status == WL3501_STATUS_SUCCESS) {
 888                 if (this->net_type == IW_MODE_INFRA) {
 889                         if (this->join_sta_bss < this->bss_cnt) {
 890                                 const int i = this->join_sta_bss;
 891                                 memcpy(this->bssid,
 892                                        this->bss_set[i].req.bssid, ETH_ALEN);
 893                                 this->chan = this->bss_set[i].req.ds_pset.chan;
 894                                 iw_copy_mgmt_info_element(&this->keep_essid.el,
 895                                                      &this->bss_set[i].req.ssid.el);
 896                                 wl3501_mgmt_auth(this);
 897                         }
 898                 } else {
 899                         const int i = this->join_sta_bss;
 900
 901                         memcpy(&this->bssid, &this->bss_set[i].req.bssid, ETH_ALEN);
 902                         this->chan = this->bss_set[i].req.ds_pset.chan;
 903                         iw_copy_mgmt_info_element(&this->keep_essid.el,
 904                                                   &this->bss_set[i].req.ssid.el);
 905                         wl3501_online(dev);
 906                 }
 907         } else {
 908                 int i;
 909                 this->join_sta_bss++;
 910                 for (i = this->join_sta_bss; i < this->bss_cnt; i++)
 911                         if (!wl3501_mgmt_join(this, i))
 912                                 break;
 913                 this->join_sta_bss = i;
 914                 if (this->join_sta_bss == this->bss_cnt) {
 915                         if (this->net_type == IW_MODE_INFRA)
 916                                 wl3501_mgmt_scan(this, 100);
 917                         else {
 918                                 this->adhoc_times++;
 919                                 if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
 920                                         wl3501_mgmt_start(this);
 921                                 else
 922                                         wl3501_mgmt_scan(this, 100);
 923                         }
 924                 }
 925         }
 926 }
 927
 928 static inline void wl3501_alarm_interrupt(struct net_device *dev,
 929                                           struct wl3501_card *this)
 930 {
 931         if (this->net_type == IW_MODE_INFRA) {
 932                 printk(KERN_INFO "Wireless LAN offline\n");
 933                 netif_stop_queue(dev);
 934                 wl3501_mgmt_resync(this);
 935         }
 936 }
 937
 938 static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
 939                                                struct wl3501_card *this,
 940                                                u16 addr)
 941 {
 942         struct wl3501_md_confirm sig;
 943
 944         pr_debug("entry");
 945         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 946         wl3501_free_tx_buffer(this, sig.data);
 947         if (netif_queue_stopped(dev))
 948                 netif_wake_queue(dev);
 949 }
 950
 951 static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 952                                            struct wl3501_card *this, u16 addr)
 953 {
 954         struct wl3501_md_ind sig;
 955         struct sk_buff *skb;
 956         u8 rssi, addr4[ETH_ALEN];
 957         u16 pkt_len;
 958
 959         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
 960         this->start_seg = sig.data;
 961         wl3501_get_from_wla(this,
 962                             sig.data + offsetof(struct wl3501_rx_hdr, rssi),
 963                             &rssi, sizeof(rssi));
 964         this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
 965
 966         wl3501_get_from_wla(this,
 967                             sig.data +
 968                                 offsetof(struct wl3501_rx_hdr, addr4),
 969                             &addr4, sizeof(addr4));
 970         if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
 971               addr4[2] == 0x03 && addr4[4] == 0x00)) {
 972                 printk(KERN_INFO "Unsupported packet type!\n");
 973                 return;
 974         }
 975         pkt_len = sig.size + 12 - 24 - 4 - 6;
 976
 977         skb = dev_alloc_skb(pkt_len + 5);
 978
 979         if (!skb) {
 980                 printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
 981                        dev->name, pkt_len);
 982                 dev->stats.rx_dropped++;
 983         } else {
 984                 skb->dev = dev;
 985                 skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
 986                 skb_copy_to_linear_data(skb, (unsigned char *)&sig.addr,
 987                                         sizeof(sig.addr));
 988                 wl3501_receive(this, skb->data, pkt_len);
 989                 skb_put(skb, pkt_len);
 990                 skb->protocol   = eth_type_trans(skb, dev);
 991                 dev->stats.rx_packets++;
 992                 dev->stats.rx_bytes += skb->len;
 993                 netif_rx(skb);
 994         }
 995 }
 996
 997 static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
 998                                                 u16 addr, void *sig, int size)
 999 {
1000         pr_debug("entry");
1001         wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
1002                             sizeof(this->sig_get_confirm));
1003         wake_up(&this->wait);
1004 }
1005
1006 static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
1007                                                   struct wl3501_card *this,
1008                                                   u16 addr)
1009 {
1010         struct wl3501_start_confirm sig;
1011
1012         pr_debug("entry");
1013         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1014         if (sig.status == WL3501_STATUS_SUCCESS)
1015                 netif_wake_queue(dev);
1016 }
1017
1018 static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
1019                                                   u16 addr)
1020 {
1021         struct wl3501_card *this = netdev_priv(dev);
1022         struct wl3501_assoc_confirm sig;
1023
1024         pr_debug("entry");
1025         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1026
1027         if (sig.status == WL3501_STATUS_SUCCESS)
1028                 wl3501_online(dev);
1029 }
1030
1031 static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
1032                                                  u16 addr)
1033 {
1034         struct wl3501_auth_confirm sig;
1035
1036         pr_debug("entry");
1037         wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
1038
1039         if (sig.status == WL3501_STATUS_SUCCESS)
1040                 wl3501_mgmt_association(this);
1041         else
1042                 wl3501_mgmt_resync(this);
1043 }
1044
1045 static inline void wl3501_rx_interrupt(struct net_device *dev)
1046 {
1047         int morepkts;
1048         u16 addr;
1049         u8 sig_id;
1050         struct wl3501_card *this = netdev_priv(dev);
1051
1052         pr_debug("entry");
1053 loop:
1054         morepkts = 0;
1055         if (!wl3501_esbq_confirm(this))
1056                 goto free;
1057         wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
1058         wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
1059
1060         switch (sig_id) {
1061         case WL3501_SIG_DEAUTH_IND:
1062         case WL3501_SIG_DISASSOC_IND:
1063         case WL3501_SIG_ALARM:
1064                 wl3501_alarm_interrupt(dev, this);
1065                 break;
1066         case WL3501_SIG_MD_CONFIRM:
1067                 wl3501_md_confirm_interrupt(dev, this, addr);
1068                 break;
1069         case WL3501_SIG_MD_IND:
1070                 wl3501_md_ind_interrupt(dev, this, addr);
1071                 break;
1072         case WL3501_SIG_GET_CONFIRM:
1073                 wl3501_get_confirm_interrupt(this, addr,
1074                                              &this->sig_get_confirm,
1075                                              sizeof(this->sig_get_confirm));
1076                 break;
1077         case WL3501_SIG_PWR_MGMT_CONFIRM:
1078                 wl3501_get_confirm_interrupt(this, addr,
1079                                              &this->sig_pwr_mgmt_confirm,
1080                                             sizeof(this->sig_pwr_mgmt_confirm));
1081                 break;
1082         case WL3501_SIG_START_CONFIRM:
1083                 wl3501_start_confirm_interrupt(dev, this, addr);
1084                 break;
1085         case WL3501_SIG_SCAN_CONFIRM:
1086                 wl3501_mgmt_scan_confirm(this, addr);
1087                 break;
1088         case WL3501_SIG_JOIN_CONFIRM:
1089                 wl3501_mgmt_join_confirm(dev, addr);
1090                 break;
1091         case WL3501_SIG_ASSOC_CONFIRM:
1092                 wl3501_assoc_confirm_interrupt(dev, addr);
1093                 break;
1094         case WL3501_SIG_AUTH_CONFIRM:
1095                 wl3501_auth_confirm_interrupt(this, addr);
1096                 break;
1097         case WL3501_SIG_RESYNC_CONFIRM:
1098                 wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
1099                 break;
1100         }
1101         wl3501_esbq_confirm_done(this);
1102         morepkts = 1;
1103         /* free request if necessary */
1104 free:
1105         wl3501_esbq_req_free(this);
1106         if (morepkts)
1107                 goto loop;
1108 }
1109
1110 static inline void wl3501_ack_interrupt(struct wl3501_card *this)
1111 {
1112         wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
1113 }
1114
1115 /**
1116  * wl3501_interrupt - Hardware interrupt from card.
1117  * @irq: Interrupt number
1118  * @dev_id: net_device
1119  *
1120  * We must acknowledge the interrupt as soon as possible, and block the
1121  * interrupt from the same card immediately to prevent re-entry.
1122  *
1123  * Before accessing the Control_Status_Block, we must lock SUTRO first.
1124  * On the other hand, to prevent SUTRO from malfunctioning, we must
1125  * unlock the SUTRO as soon as possible.
1126  */
1127 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
1128 {
1129         struct net_device *dev = dev_id;
1130         struct wl3501_card *this;
1131
1132         this = netdev_priv(dev);
1133         spin_lock(&this->lock);
1134         wl3501_ack_interrupt(this);
1135         wl3501_block_interrupt(this);
1136         wl3501_rx_interrupt(dev);
1137         wl3501_unblock_interrupt(this);
1138         spin_unlock(&this->lock);
1139
1140         return IRQ_HANDLED;
1141 }
1142
1143 static int wl3501_reset_board(struct wl3501_card *this)
1144 {
1145         u8 tmp = 0;
1146         int i, rc = 0;
1147
1148         /* Coreset */
1149         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1150         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1151         wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
1152
1153         /* Reset SRAM 0x480 to zero */
1154         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1155
1156         /* Start up */
1157         wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
1158
1159         WL3501_NOPLOOP(1024 * 50);
1160
1161         wl3501_unblock_interrupt(this); /* acme: was commented */
1162
1163         /* Polling Self_Test_Status */
1164         for (i = 0; i < 10000; i++) {
1165                 wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
1166
1167                 if (tmp == 'W') {
1168                         /* firmware complete all test successfully */
1169                         tmp = 'A';
1170                         wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
1171                         goto out;
1172                 }
1173                 WL3501_NOPLOOP(10);
1174         }
1175         printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
1176         rc = -ENODEV;
1177 out:
1178         return rc;
1179 }
1180
1181 static int wl3501_init_firmware(struct wl3501_card *this)
1182 {
1183         u16 ptr, next;
1184         int rc = wl3501_reset_board(this);
1185
1186         if (rc)
1187                 goto fail;
1188         this->card_name[0] = '\0';
1189         wl3501_get_from_wla(this, 0x1a00,
1190                             this->card_name, sizeof(this->card_name));
1191         this->card_name[sizeof(this->card_name) - 1] = '\0';
1192         this->firmware_date[0] = '\0';
1193         wl3501_get_from_wla(this, 0x1a40,
1194                             this->firmware_date, sizeof(this->firmware_date));
1195         this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
1196         /* Switch to SRAM Page 0 */
1197         wl3501_switch_page(this, WL3501_BSS_SPAGE0);
1198         /* Read parameter from card */
1199         wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
1200         wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
1201         wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
1202         wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
1203         wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
1204         wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
1205         this->esbq_req_tail     = this->esbq_req_head = this->esbq_req_start;
1206         this->esbq_req_end     += this->esbq_req_start;
1207         this->esbq_confirm      = this->esbq_confirm_start;
1208         this->esbq_confirm_end += this->esbq_confirm_start;
1209         /* Initial Tx Buffer */
1210         this->tx_buffer_cnt = 1;
1211         ptr = this->tx_buffer_head;
1212         next = ptr + WL3501_BLKSZ;
1213         while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
1214                 this->tx_buffer_cnt++;
1215                 wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1216                 ptr = next;
1217                 next = ptr + WL3501_BLKSZ;
1218         }
1219         rc = 0;
1220         next = 0;
1221         wl3501_set_to_wla(this, ptr, &next, sizeof(next));
1222         this->tx_buffer_tail = ptr;
1223 out:
1224         return rc;
1225 fail:
1226         printk(KERN_WARNING "%s: failed!\n", __func__);
1227         goto out;
1228 }
1229
1230 static int wl3501_close(struct net_device *dev)
1231 {
1232         struct wl3501_card *this = netdev_priv(dev);
1233         unsigned long flags;
1234         struct pcmcia_device *link;
1235         link = this->p_dev;
1236
1237         spin_lock_irqsave(&this->lock, flags);
1238         link->open--;
1239
1240         /* Stop wl3501_hard_start_xmit() from now on */
1241         netif_stop_queue(dev);
1242         wl3501_ack_interrupt(this);
1243
1244         /* Mask interrupts from the SUTRO */
1245         wl3501_block_interrupt(this);
1246
1247         printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
1248         spin_unlock_irqrestore(&this->lock, flags);
1249         return 0;
1250 }
1251
1252 /**
1253  * wl3501_reset - Reset the SUTRO.
1254  * @dev: network device
1255  *
1256  * It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
1257  * and wl3501_open() again, but I wouldn't like to free_irq() when the driver
1258  * is running. It seems to be dangerous.
1259  */
1260 static int wl3501_reset(struct net_device *dev)
1261 {
1262         struct wl3501_card *this = netdev_priv(dev);
1263         int rc = -ENODEV;
1264         unsigned long flags;
1265
1266         spin_lock_irqsave(&this->lock, flags);
1267         wl3501_block_interrupt(this);
1268
1269         if (wl3501_init_firmware(this)) {
1270                 printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
1271                        dev->name);
1272                 /* Free IRQ, and mark IRQ as unused */
1273                 free_irq(dev->irq, dev);
1274                 goto out;
1275         }
1276
1277         /*
1278          * Queue has to be started only when the Card is Started
1279          */
1280         netif_stop_queue(dev);
1281         this->adhoc_times = 0;
1282         wl3501_ack_interrupt(this);
1283         wl3501_unblock_interrupt(this);
1284         wl3501_mgmt_scan(this, 100);
1285         pr_debug("%s: device reset", dev->name);
1286         rc = 0;
1287 out:
1288         spin_unlock_irqrestore(&this->lock, flags);
1289         return rc;
1290 }
1291
1292 static void wl3501_tx_timeout(struct net_device *dev, unsigned int txqueue)
1293 {
1294         struct net_device_stats *stats = &dev->stats;
1295         int rc;
1296
1297         stats->tx_errors++;
1298         rc = wl3501_reset(dev);
1299         if (rc)
1300                 printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
1301                        dev->name, rc);
1302         else {
1303                 netif_trans_update(dev); /* prevent tx timeout */
1304                 netif_wake_queue(dev);
1305         }
1306 }
1307
1308 /*
1309  * Return : 0 - OK
1310  *          1 - Could not transmit (dev_queue_xmit will queue it)
1311  *              and try to sent it later
1312  */
1313 static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb,
1314                                                 struct net_device *dev)
1315 {
1316         int enabled, rc;
1317         struct wl3501_card *this = netdev_priv(dev);
1318         unsigned long flags;
1319
1320         spin_lock_irqsave(&this->lock, flags);
1321         enabled = wl3501_block_interrupt(this);
1322         rc = wl3501_send_pkt(this, skb->data, skb->len);
1323         if (enabled)
1324                 wl3501_unblock_interrupt(this);
1325         if (rc) {
1326                 ++dev->stats.tx_dropped;
1327                 netif_stop_queue(dev);
1328         } else {
1329                 ++dev->stats.tx_packets;
1330                 dev->stats.tx_bytes += skb->len;
1331                 kfree_skb(skb);
1332
1333                 if (this->tx_buffer_cnt < 2)
1334                         netif_stop_queue(dev);
1335         }
1336         spin_unlock_irqrestore(&this->lock, flags);
1337         return NETDEV_TX_OK;
1338 }
1339
1340 static int wl3501_open(struct net_device *dev)
1341 {
1342         int rc = -ENODEV;
1343         struct wl3501_card *this = netdev_priv(dev);
1344         unsigned long flags;
1345         struct pcmcia_device *link;
1346         link = this->p_dev;
1347
1348         spin_lock_irqsave(&this->lock, flags);
1349         if (!pcmcia_dev_present(link))
1350                 goto out;
1351         netif_device_attach(dev);
1352         link->open++;
1353
1354         /* Initial WL3501 firmware */
1355         pr_debug("%s: Initialize WL3501 firmware...", dev->name);
1356         if (wl3501_init_firmware(this))
1357                 goto fail;
1358         /* Initial device variables */
1359         this->adhoc_times = 0;
1360         /* Acknowledge Interrupt, for cleaning last state */
1361         wl3501_ack_interrupt(this);
1362
1363         /* Enable interrupt from card after all */
1364         wl3501_unblock_interrupt(this);
1365         wl3501_mgmt_scan(this, 100);
1366         rc = 0;
1367         pr_debug("%s: WL3501 opened", dev->name);
1368         printk(KERN_INFO "%s: Card Name: %s\n"
1369                          "%s: Firmware Date: %s\n",
1370                          dev->name, this->card_name,
1371                          dev->name, this->firmware_date);
1372 out:
1373         spin_unlock_irqrestore(&this->lock, flags);
1374         return rc;
1375 fail:
1376         printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
1377         goto out;
1378 }
1379
1380 static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
1381 {
1382         struct wl3501_card *this = netdev_priv(dev);
1383         struct iw_statistics *wstats = &this->wstats;
1384         u32 value; /* size checked: it is u32 */
1385
1386         memset(wstats, 0, sizeof(*wstats));
1387         wstats->status = netif_running(dev);
1388         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
1389                                   &value, sizeof(value)))
1390                 wstats->discard.code += value;
1391         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
1392                                   &value, sizeof(value)))
1393                 wstats->discard.code += value;
1394         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
1395                                   &value, sizeof(value)))
1396                 wstats->discard.code += value;
1397         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
1398                                   &value, sizeof(value)))
1399                 wstats->discard.retries = value;
1400         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
1401                                   &value, sizeof(value)))
1402                 wstats->discard.misc += value;
1403         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
1404                                   &value, sizeof(value)))
1405                 wstats->discard.misc += value;
1406         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
1407                                   &value, sizeof(value)))
1408                 wstats->discard.misc += value;
1409         if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
1410                                   &value, sizeof(value)))
1411                 wstats->discard.misc += value;
1412         return wstats;
1413 }
1414
1415 /**
1416  * wl3501_detach - deletes a driver "instance"
1417  * @link: FILL_IN
1418  *
1419  * This deletes a driver "instance". The device is de-registered with Card
1420  * Services. If it has been released, all local data structures are freed.
1421  * Otherwise, the structures will be freed when the device is released.
1422  */
1423 static void wl3501_detach(struct pcmcia_device *link)
1424 {
1425         struct net_device *dev = link->priv;
1426
1427         /* If the device is currently configured and active, we won't actually
1428          * delete it yet.  Instead, it is marked so that when the release()
1429          * function is called, that will trigger a proper detach(). */
1430
1431         while (link->open > 0)
1432                 wl3501_close(dev);
1433
1434         netif_device_detach(dev);
1435         wl3501_release(link);
1436
1437         unregister_netdev(dev);
1438         free_netdev(dev);
1439 }
1440
1441 static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
1442                            union iwreq_data *wrqu, char *extra)
1443 {
1444         strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
1445         return 0;
1446 }
1447
1448 static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
1449                            union iwreq_data *wrqu, char *extra)
1450 {
1451         struct wl3501_card *this = netdev_priv(dev);
1452         int channel = wrqu->freq.m;
1453         int rc = -EINVAL;
1454
1455         if (iw_valid_channel(this->reg_domain, channel)) {
1456                 this->chan = channel;
1457                 rc = wl3501_reset(dev);
1458         }
1459         return rc;
1460 }
1461
1462 static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
1463                            union iwreq_data *wrqu, char *extra)
1464 {
1465         struct wl3501_card *this = netdev_priv(dev);
1466
1467         wrqu->freq.m = 100000 *
1468                 ieee80211_channel_to_frequency(this->chan, NL80211_BAND_2GHZ);
1469         wrqu->freq.e = 1;
1470         return 0;
1471 }
1472
1473 static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
1474                            union iwreq_data *wrqu, char *extra)
1475 {
1476         int rc = -EINVAL;
1477
1478         if (wrqu->mode == IW_MODE_INFRA ||
1479             wrqu->mode == IW_MODE_ADHOC ||
1480             wrqu->mode == IW_MODE_AUTO) {
1481                 struct wl3501_card *this = netdev_priv(dev);
1482
1483                 this->net_type = wrqu->mode;
1484                 rc = wl3501_reset(dev);
1485         }
1486         return rc;
1487 }
1488
1489 static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
1490                            union iwreq_data *wrqu, char *extra)
1491 {
1492         struct wl3501_card *this = netdev_priv(dev);
1493
1494         wrqu->mode = this->net_type;
1495         return 0;
1496 }
1497
1498 static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
1499                            union iwreq_data *wrqu, char *extra)
1500 {
1501         struct wl3501_card *this = netdev_priv(dev);
1502
1503         wrqu->sens.value = this->rssi;
1504         wrqu->sens.disabled = !wrqu->sens.value;
1505         wrqu->sens.fixed = 1;
1506         return 0;
1507 }
1508
1509 static int wl3501_get_range(struct net_device *dev,
1510                             struct iw_request_info *info,
1511                             union iwreq_data *wrqu, char *extra)
1512 {
1513         struct iw_range *range = (struct iw_range *)extra;
1514
1515         /* Set the length (very important for backward compatibility) */
1516         wrqu->data.length = sizeof(*range);
1517
1518         /* Set all the info we don't care or don't know about to zero */
1519         memset(range, 0, sizeof(*range));
1520
1521         /* Set the Wireless Extension versions */
1522         range->we_version_compiled      = WIRELESS_EXT;
1523         range->we_version_source        = 1;
1524         range->throughput               = 2 * 1000 * 1000;     /* ~2 Mb/s */
1525         /* FIXME: study the code to fill in more fields... */
1526         return 0;
1527 }
1528
1529 static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
1530                           union iwreq_data *wrqu, char *extra)
1531 {
1532         struct wl3501_card *this = netdev_priv(dev);
1533         int rc = -EINVAL;
1534
1535         /* FIXME: we support other ARPHRDs...*/
1536         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
1537                 goto out;
1538         if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
1539                 /* FIXME: rescan? */
1540         } else
1541                 memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
1542                 /* FIXME: rescan? deassoc & scan? */
1543         rc = 0;
1544 out:
1545         return rc;
1546 }
1547
1548 static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
1549                           union iwreq_data *wrqu, char *extra)
1550 {
1551         struct wl3501_card *this = netdev_priv(dev);
1552
1553         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1554         memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
1555         return 0;
1556 }
1557
1558 static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
1559                            union iwreq_data *wrqu, char *extra)
1560 {
1561         /*
1562          * FIXME: trigger scanning with a reset, yes, I'm lazy
1563          */
1564         return wl3501_reset(dev);
1565 }
1566
1567 static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
1568                            union iwreq_data *wrqu, char *extra)
1569 {
1570         struct wl3501_card *this = netdev_priv(dev);
1571         int i;
1572         char *current_ev = extra;
1573         struct iw_event iwe;
1574
1575         for (i = 0; i < this->bss_cnt; ++i) {
1576                 iwe.cmd                 = SIOCGIWAP;
1577                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
1578                 memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].req.bssid, ETH_ALEN);
1579                 current_ev = iwe_stream_add_event(info, current_ev,
1580                                                   extra + IW_SCAN_MAX_DATA,
1581                                                   &iwe, IW_EV_ADDR_LEN);
1582                 iwe.cmd           = SIOCGIWESSID;
1583                 iwe.u.data.flags  = 1;
1584                 iwe.u.data.length = this->bss_set[i].req.ssid.el.len;
1585                 current_ev = iwe_stream_add_point(info, current_ev,
1586                                                   extra + IW_SCAN_MAX_DATA,
1587                                                   &iwe,
1588                                                   this->bss_set[i].req.ssid.essid);
1589                 iwe.cmd    = SIOCGIWMODE;
1590                 iwe.u.mode = this->bss_set[i].req.bss_type;
1591                 current_ev = iwe_stream_add_event(info, current_ev,
1592                                                   extra + IW_SCAN_MAX_DATA,
1593                                                   &iwe, IW_EV_UINT_LEN);
1594                 iwe.cmd = SIOCGIWFREQ;
1595                 iwe.u.freq.m = this->bss_set[i].req.ds_pset.chan;
1596                 iwe.u.freq.e = 0;
1597                 current_ev = iwe_stream_add_event(info, current_ev,
1598                                                   extra + IW_SCAN_MAX_DATA,
1599                                                   &iwe, IW_EV_FREQ_LEN);
1600                 iwe.cmd = SIOCGIWENCODE;
1601                 if (this->bss_set[i].req.cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
1602                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
1603                 else
1604                         iwe.u.data.flags = IW_ENCODE_DISABLED;
1605                 iwe.u.data.length = 0;
1606                 current_ev = iwe_stream_add_point(info, current_ev,
1607                                                   extra + IW_SCAN_MAX_DATA,
1608                                                   &iwe, NULL);
1609         }
1610         /* Length of data */
1611         wrqu->data.length = (current_ev - extra);
1612         wrqu->data.flags = 0; /* FIXME: set properly these flags */
1613         return 0;
1614 }
1615
1616 static int wl3501_set_essid(struct net_device *dev,
1617                             struct iw_request_info *info,
1618                             union iwreq_data *wrqu, char *extra)
1619 {
1620         struct wl3501_card *this = netdev_priv(dev);
1621
1622         if (wrqu->data.flags) {
1623                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1624                                          &this->essid.el,
1625                                          extra, wrqu->data.length);
1626         } else { /* We accept any ESSID */
1627                 iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
1628                                          &this->essid.el, "ANY", 3);
1629         }
1630         return wl3501_reset(dev);
1631 }
1632
1633 static int wl3501_get_essid(struct net_device *dev,
1634                             struct iw_request_info *info,
1635                             union iwreq_data *wrqu, char *extra)
1636 {
1637         struct wl3501_card *this = netdev_priv(dev);
1638         unsigned long flags;
1639
1640         spin_lock_irqsave(&this->lock, flags);
1641         wrqu->essid.flags  = 1;
1642         wrqu->essid.length = this->essid.el.len;
1643         memcpy(extra, this->essid.essid, this->essid.el.len);
1644         spin_unlock_irqrestore(&this->lock, flags);
1645         return 0;
1646 }
1647
1648 static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
1649                            union iwreq_data *wrqu, char *extra)
1650 {
1651         struct wl3501_card *this = netdev_priv(dev);
1652
1653         if (wrqu->data.length > sizeof(this->nick))
1654                 return -E2BIG;
1655         strlcpy(this->nick, extra, wrqu->data.length);
1656         return 0;
1657 }
1658
1659 static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
1660                            union iwreq_data *wrqu, char *extra)
1661 {
1662         struct wl3501_card *this = netdev_priv(dev);
1663
1664         strlcpy(extra, this->nick, 32);
1665         wrqu->data.length = strlen(extra);
1666         return 0;
1667 }
1668
1669 static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
1670                            union iwreq_data *wrqu, char *extra)
1671 {
1672         /*
1673          * FIXME: have to see from where to get this info, perhaps this card
1674          * works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
1675          * common with the Planet Access Points. -acme
1676          */
1677         wrqu->bitrate.value = 2000000;
1678         wrqu->bitrate.fixed = 1;
1679         return 0;
1680 }
1681
1682 static int wl3501_get_rts_threshold(struct net_device *dev,
1683                                     struct iw_request_info *info,
1684                                     union iwreq_data *wrqu, char *extra)
1685 {
1686         u16 threshold; /* size checked: it is u16 */
1687         struct wl3501_card *this = netdev_priv(dev);
1688         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
1689                                       &threshold, sizeof(threshold));
1690         if (!rc) {
1691                 wrqu->rts.value = threshold;
1692                 wrqu->rts.disabled = threshold >= 2347;
1693                 wrqu->rts.fixed = 1;
1694         }
1695         return rc;
1696 }
1697
1698 static int wl3501_get_frag_threshold(struct net_device *dev,
1699                                      struct iw_request_info *info,
1700                                      union iwreq_data *wrqu, char *extra)
1701 {
1702         u16 threshold; /* size checked: it is u16 */
1703         struct wl3501_card *this = netdev_priv(dev);
1704         int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
1705                                       &threshold, sizeof(threshold));
1706         if (!rc) {
1707                 wrqu->frag.value = threshold;
1708                 wrqu->frag.disabled = threshold >= 2346;
1709                 wrqu->frag.fixed = 1;
1710         }
1711         return rc;
1712 }
1713
1714 static int wl3501_get_txpow(struct net_device *dev,
1715                             struct iw_request_info *info,
1716                             union iwreq_data *wrqu, char *extra)
1717 {
1718         u16 txpow;
1719         struct wl3501_card *this = netdev_priv(dev);
1720         int rc = wl3501_get_mib_value(this,
1721                                       WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
1722                                       &txpow, sizeof(txpow));
1723         if (!rc) {
1724                 wrqu->txpower.value = txpow;
1725                 wrqu->txpower.disabled = 0;
1726                 /*
1727                  * From the MIB values I think this can be configurable,
1728                  * as it lists several tx power levels -acme
1729                  */
1730                 wrqu->txpower.fixed = 0;
1731                 wrqu->txpower.flags = IW_TXPOW_MWATT;
1732         }
1733         return rc;
1734 }
1735
1736 static int wl3501_get_retry(struct net_device *dev,
1737                             struct iw_request_info *info,
1738                             union iwreq_data *wrqu, char *extra)
1739 {
1740         u8 retry; /* size checked: it is u8 */
1741         struct wl3501_card *this = netdev_priv(dev);
1742         int rc = wl3501_get_mib_value(this,
1743                                       WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
1744                                       &retry, sizeof(retry));
1745         if (rc)
1746                 goto out;
1747         if (wrqu->retry.flags & IW_RETRY_LONG) {
1748                 wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
1749                 goto set_value;
1750         }
1751         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
1752                                   &retry, sizeof(retry));
1753         if (rc)
1754                 goto out;
1755         wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
1756 set_value:
1757         wrqu->retry.value = retry;
1758         wrqu->retry.disabled = 0;
1759 out:
1760         return rc;
1761 }
1762
1763 static int wl3501_get_encode(struct net_device *dev,
1764                              struct iw_request_info *info,
1765                              union iwreq_data *wrqu, char *extra)
1766 {
1767         u8 implemented, restricted, keys[100], len_keys, tocopy;
1768         struct wl3501_card *this = netdev_priv(dev);
1769         int rc = wl3501_get_mib_value(this,
1770                                       WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
1771                                       &implemented, sizeof(implemented));
1772         if (rc)
1773                 goto out;
1774         if (!implemented) {
1775                 wrqu->encoding.flags = IW_ENCODE_DISABLED;
1776                 goto out;
1777         }
1778         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
1779                                   &restricted, sizeof(restricted));
1780         if (rc)
1781                 goto out;
1782         wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
1783                                             IW_ENCODE_OPEN;
1784         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
1785                                   &len_keys, sizeof(len_keys));
1786         if (rc)
1787                 goto out;
1788         rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
1789                                   keys, len_keys);
1790         if (rc)
1791                 goto out;
1792         tocopy = min_t(u16, len_keys, wrqu->encoding.length);
1793         tocopy = min_t(u8, tocopy, 100);
1794         wrqu->encoding.length = tocopy;
1795         memcpy(extra, keys, tocopy);
1796 out:
1797         return rc;
1798 }
1799
1800 static int wl3501_get_power(struct net_device *dev,
1801                             struct iw_request_info *info,
1802                             union iwreq_data *wrqu, char *extra)
1803 {
1804         u8 pwr_state;
1805         struct wl3501_card *this = netdev_priv(dev);
1806         int rc = wl3501_get_mib_value(this,
1807                                       WL3501_MIB_ATTR_CURRENT_PWR_STATE,
1808                                       &pwr_state, sizeof(pwr_state));
1809         if (rc)
1810                 goto out;
1811         wrqu->power.disabled = !pwr_state;
1812         wrqu->power.flags = IW_POWER_ON;
1813 out:
1814         return rc;
1815 }
1816
1817 static const iw_handler wl3501_handler[] = {
1818         IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
1819         IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
1820         IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
1821         IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
1822         IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
1823         IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
1824         IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
1825         IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
1826         IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
1827         IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
1828         IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
1829         IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
1830         IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
1831         IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
1832         IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
1833         IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
1834         IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
1835         IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
1836         IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
1837         IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
1838         IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
1839         IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
1840         IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
1841         IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
1842         IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
1843         IW_HANDLER(SIOCGIWPOWER, wl3501_get_power),
1844 };
1845
1846 static const struct iw_handler_def wl3501_handler_def = {
1847         .num_standard   = ARRAY_SIZE(wl3501_handler),
1848         .standard       = (iw_handler *)wl3501_handler,
1849         .get_wireless_stats = wl3501_get_wireless_stats,
1850 };
1851
1852 static const struct net_device_ops wl3501_netdev_ops = {
1853         .ndo_open               = wl3501_open,
1854         .ndo_stop               = wl3501_close,
1855         .ndo_start_xmit         = wl3501_hard_start_xmit,
1856         .ndo_tx_timeout         = wl3501_tx_timeout,
1857         .ndo_set_mac_address    = eth_mac_addr,
1858         .ndo_validate_addr      = eth_validate_addr,
1859 };
1860
1861 static int wl3501_probe(struct pcmcia_device *p_dev)
1862 {
1863         struct net_device *dev;
1864         struct wl3501_card *this;
1865
1866         /* The io structure describes IO port mapping */
1867         p_dev->resource[0]->end = 16;
1868         p_dev->resource[0]->flags       = IO_DATA_PATH_WIDTH_8;
1869
1870         /* General socket configuration */
1871         p_dev->config_flags     = CONF_ENABLE_IRQ;
1872         p_dev->config_index     = 1;
1873
1874         dev = alloc_etherdev(sizeof(struct wl3501_card));
1875         if (!dev)
1876                 goto out_link;
1877
1878
1879         dev->netdev_ops         = &wl3501_netdev_ops;
1880         dev->watchdog_timeo     = 5 * HZ;
1881
1882         this = netdev_priv(dev);
1883         this->wireless_data.spy_data = &this->spy_data;
1884         this->p_dev = p_dev;
1885         dev->wireless_data      = &this->wireless_data;
1886         dev->wireless_handlers  = &wl3501_handler_def;
1887         netif_stop_queue(dev);
1888         p_dev->priv = dev;
1889
1890         return wl3501_config(p_dev);
1891 out_link:
1892         return -ENOMEM;
1893 }
1894
1895 static int wl3501_config(struct pcmcia_device *link)
1896 {
1897         struct net_device *dev = link->priv;
1898         int i = 0, j, ret;
1899         struct wl3501_card *this;
1900
1901         /* Try allocating IO ports.  This tries a few fixed addresses.  If you
1902          * want, you can also read the card's config table to pick addresses --
1903          * see the serial driver for an example. */
1904         link->io_lines = 5;
1905
1906         for (j = 0x280; j < 0x400; j += 0x20) {
1907                 /* The '^0x300' is so that we probe 0x300-0x3ff first, then
1908                  * 0x200-0x2ff, and so on, because this seems safer */
1909                 link->resource[0]->start = j;
1910                 link->resource[1]->start = link->resource[0]->start + 0x10;
1911                 i = pcmcia_request_io(link);
1912                 if (i == 0)
1913                         break;
1914         }
1915         if (i != 0)
1916                 goto failed;
1917
1918         /* Now allocate an interrupt line. Note that this does not actually
1919          * assign a handler to the interrupt. */
1920
1921         ret = pcmcia_request_irq(link, wl3501_interrupt);
1922         if (ret)
1923                 goto failed;
1924
1925         ret = pcmcia_enable_device(link);
1926         if (ret)
1927                 goto failed;
1928
1929         dev->irq = link->irq;
1930         dev->base_addr = link->resource[0]->start;
1931         SET_NETDEV_DEV(dev, &link->dev);
1932         if (register_netdev(dev)) {
1933                 printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
1934                 goto failed;
1935         }
1936
1937         this = netdev_priv(dev);
1938
1939         this->base_addr = dev->base_addr;
1940
1941         if (!wl3501_get_flash_mac_addr(this)) {
1942                 printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
1943                        dev->name);
1944                 unregister_netdev(dev);
1945                 goto failed;
1946         }
1947
1948         eth_hw_addr_set(dev, this->mac_addr);
1949
1950         /* print probe information */
1951         printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
1952                "MAC addr in flash ROM:%pM\n",
1953                dev->name, this->base_addr, (int)dev->irq,
1954                dev->dev_addr);
1955         /*
1956          * Initialize card parameters - added by jss
1957          */
1958         this->net_type          = IW_MODE_INFRA;
1959         this->bss_cnt           = 0;
1960         this->join_sta_bss      = 0;
1961         this->adhoc_times       = 0;
1962         iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
1963                                  "ANY", 3);
1964         this->card_name[0]      = '\0';
1965         this->firmware_date[0]  = '\0';
1966         this->rssi              = 255;
1967         this->chan              = iw_default_channel(this->reg_domain);
1968         strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
1969         spin_lock_init(&this->lock);
1970         init_waitqueue_head(&this->wait);
1971         netif_start_queue(dev);
1972         return 0;
1973
1974 failed:
1975         wl3501_release(link);
1976         return -ENODEV;
1977 }
1978
1979 static void wl3501_release(struct pcmcia_device *link)
1980 {
1981         pcmcia_disable_device(link);
1982 }
1983
1984 static int wl3501_suspend(struct pcmcia_device *link)
1985 {
1986         struct net_device *dev = link->priv;
1987
1988         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
1989         if (link->open)
1990                 netif_device_detach(dev);
1991
1992         return 0;
1993 }
1994
1995 static int wl3501_resume(struct pcmcia_device *link)
1996 {
1997         struct net_device *dev = link->priv;
1998
1999         wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
2000         if (link->open) {
2001                 wl3501_reset(dev);
2002                 netif_device_attach(dev);
2003         }
2004
2005         return 0;
2006 }
2007
2008
2009 static const struct pcmcia_device_id wl3501_ids[] = {
2010         PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
2011         PCMCIA_DEVICE_NULL
2012 };
2013 MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
2014
2015 static struct pcmcia_driver wl3501_driver = {
2016         .owner          = THIS_MODULE,
2017         .name           = "wl3501_cs",
2018         .probe          = wl3501_probe,
2019         .remove         = wl3501_detach,
2020         .id_table       = wl3501_ids,
2021         .suspend        = wl3501_suspend,
2022         .resume         = wl3501_resume,
2023 };
2024 module_pcmcia_driver(wl3501_driver);
2025
2026 MODULE_AUTHOR("Fox Chen <[email protected]>, "
2027               "Arnaldo Carvalho de Melo <[email protected]>,"
2028               "Gustavo Niemeyer <[email protected]>");
2029 MODULE_DESCRIPTION("Planet wl3501 wireless driver");
2030 MODULE_LICENSE("GPL");