git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/orinoco/main.c

   1 /* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c)
   2  *
   3  * A driver for Hermes or Prism 2 chipset based PCMCIA wireless
   4  * adaptors, with Lucent/Agere, Intersil or Symbol firmware.
   5  *
   6  * Current maintainers (as of 29 September 2003) are:
   7  *      Pavel Roskin <proski AT gnu.org>
   8  * and  David Gibson <hermes AT gibson.dropbear.id.au>
   9  *
  10  * (C) Copyright David Gibson, IBM Corporation 2001-2003.
  11  * Copyright (C) 2000 David Gibson, Linuxcare Australia.
  12  *      With some help from :
  13  * Copyright (C) 2001 Jean Tourrilhes, HP Labs
  14  * Copyright (C) 2001 Benjamin Herrenschmidt
  15  *
  16  * Based on dummy_cs.c 1.27 2000/06/12 21:27:25
  17  *
  18  * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy
  19  * AT fasta.fh-dortmund.de>
  20  *      http://www.stud.fh-dortmund.de/~andy/wvlan/
  21  *
  22  * The contents of this file are subject to the Mozilla Public License
  23  * Version 1.1 (the "License"); you may not use this file except in
  24  * compliance with the License. You may obtain a copy of the License
  25  * at http://www.mozilla.org/MPL/
  26  *
  27  * Software distributed under the License is distributed on an "AS IS"
  28  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  29  * the License for the specific language governing rights and
  30  * limitations under the License.
  31  *
  32  * The initial developer of the original code is David A. Hinds
  33  * <dahinds AT users.sourceforge.net>.  Portions created by David
  34  * A. Hinds are Copyright (C) 1999 David A. Hinds.  All Rights
  35  * Reserved.
  36  *
  37  * Alternatively, the contents of this file may be used under the
  38  * terms of the GNU General Public License version 2 (the "GPL"), in
  39  * which case the provisions of the GPL are applicable instead of the
  40  * above.  If you wish to allow the use of your version of this file
  41  * only under the terms of the GPL and not to allow others to use your
  42  * version of this file under the MPL, indicate your decision by
  43  * deleting the provisions above and replace them with the notice and
  44  * other provisions required by the GPL.  If you do not delete the
  45  * provisions above, a recipient may use your version of this file
  46  * under either the MPL or the GPL.  */
  47
  48 /*
  49  * TODO
  50  *      o Handle de-encapsulation within network layer, provide 802.11
  51  *        headers (patch from Thomas 'Dent' Mirlacher)
  52  *      o Fix possible races in SPY handling.
  53  *      o Disconnect wireless extensions from fundamental configuration.
  54  *      o (maybe) Software WEP support (patch from Stano Meduna).
  55  *      o (maybe) Use multiple Tx buffers - driver handling queue
  56  *        rather than firmware.
  57  */
  58
  59 /* Locking and synchronization:
  60  *
  61  * The basic principle is that everything is serialized through a
  62  * single spinlock, priv->lock.  The lock is used in user, bh and irq
  63  * context, so when taken outside hardirq context it should always be
  64  * taken with interrupts disabled.  The lock protects both the
  65  * hardware and the struct orinoco_private.
  66  *
  67  * Another flag, priv->hw_unavailable indicates that the hardware is
  68  * unavailable for an extended period of time (e.g. suspended, or in
  69  * the middle of a hard reset).  This flag is protected by the
  70  * spinlock.  All code which touches the hardware should check the
  71  * flag after taking the lock, and if it is set, give up on whatever
  72  * they are doing and drop the lock again.  The orinoco_lock()
  73  * function handles this (it unlocks and returns -EBUSY if
  74  * hw_unavailable is non-zero).
  75  */
  76
  77 #define DRIVER_NAME "orinoco"
  78
  79 #include <linux/module.h>
  80 #include <linux/kernel.h>
  81 #include <linux/init.h>
  82 #include <linux/delay.h>
  83 #include <linux/netdevice.h>
  84 #include <linux/etherdevice.h>
  85 #include <linux/ethtool.h>
  86 #include <linux/suspend.h>
  87 #include <linux/if_arp.h>
  88 #include <linux/wireless.h>
  89 #include <linux/ieee80211.h>
  90 #include <net/iw_handler.h>
  91
  92 #include "hermes_rid.h"
  93 #include "hermes_dld.h"
  94 #include "hw.h"
  95 #include "scan.h"
  96 #include "mic.h"
  97 #include "fw.h"
  98 #include "wext.h"
  99 #include "main.h"
 100
 101 #include "orinoco.h"
 102
 103 /********************************************************************/
 104 /* Module information                                               */
 105 /********************************************************************/
 106
 107 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & "
 108               "David Gibson <hermes@gibson.dropbear.id.au>");
 109 MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based "
 110                    "and similar wireless cards");
 111 MODULE_LICENSE("Dual MPL/GPL");
 112
 113 /* Level of debugging. Used in the macros in orinoco.h */
 114 #ifdef ORINOCO_DEBUG
 115 int orinoco_debug = ORINOCO_DEBUG;
 116 EXPORT_SYMBOL(orinoco_debug);
 117 module_param(orinoco_debug, int, 0644);
 118 MODULE_PARM_DESC(orinoco_debug, "Debug level");
 119 #endif
 120
 121 static int suppress_linkstatus; /* = 0 */
 122 module_param(suppress_linkstatus, bool, 0644);
 123 MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
 124
 125 static int ignore_disconnect; /* = 0 */
 126 module_param(ignore_disconnect, int, 0644);
 127 MODULE_PARM_DESC(ignore_disconnect,
 128                  "Don't report lost link to the network layer");
 129
 130 int force_monitor; /* = 0 */
 131 module_param(force_monitor, int, 0644);
 132 MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
 133
 134 /********************************************************************/
 135 /* Internal constants                                               */
 136 /********************************************************************/
 137
 138 /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
 139 static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
 140 #define ENCAPS_OVERHEAD         (sizeof(encaps_hdr) + 2)
 141
 142 #define ORINOCO_MIN_MTU         256
 143 #define ORINOCO_MAX_MTU         (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD)
 144
 145 #define SYMBOL_MAX_VER_LEN      (14)
 146 #define MAX_IRQLOOPS_PER_IRQ    10
 147 #define MAX_IRQLOOPS_PER_JIFFY  (20000/HZ) /* Based on a guestimate of
 148                                             * how many events the
 149                                             * device could
 150                                             * legitimately generate */
 151 #define TX_NICBUF_SIZE_BUG      1585            /* Bug in Symbol firmware */
 152
 153 #define DUMMY_FID               0xFFFF
 154
 155 /*#define MAX_MULTICAST(priv)   (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \
 156   HERMES_MAX_MULTICAST : 0)*/
 157 #define MAX_MULTICAST(priv)     (HERMES_MAX_MULTICAST)
 158
 159 #define ORINOCO_INTEN           (HERMES_EV_RX | HERMES_EV_ALLOC \
 160                                  | HERMES_EV_TX | HERMES_EV_TXEXC \
 161                                  | HERMES_EV_WTERR | HERMES_EV_INFO \
 162                                  | HERMES_EV_INFDROP)
 163
 164 static const struct ethtool_ops orinoco_ethtool_ops;
 165
 166 /********************************************************************/
 167 /* Data types                                                       */
 168 /********************************************************************/
 169
 170 /* Beginning of the Tx descriptor, used in TxExc handling */
 171 struct hermes_txexc_data {
 172         struct hermes_tx_descriptor desc;
 173         __le16 frame_ctl;
 174         __le16 duration_id;
 175         u8 addr1[ETH_ALEN];
 176 } __attribute__ ((packed));
 177
 178 /* Rx frame header except compatibility 802.3 header */
 179 struct hermes_rx_descriptor {
 180         /* Control */
 181         __le16 status;
 182         __le32 time;
 183         u8 silence;
 184         u8 signal;
 185         u8 rate;
 186         u8 rxflow;
 187         __le32 reserved;
 188
 189         /* 802.11 header */
 190         __le16 frame_ctl;
 191         __le16 duration_id;
 192         u8 addr1[ETH_ALEN];
 193         u8 addr2[ETH_ALEN];
 194         u8 addr3[ETH_ALEN];
 195         __le16 seq_ctl;
 196         u8 addr4[ETH_ALEN];
 197
 198         /* Data length */
 199         __le16 data_len;
 200 } __attribute__ ((packed));
 201
 202 struct orinoco_rx_data {
 203         struct hermes_rx_descriptor *desc;
 204         struct sk_buff *skb;
 205         struct list_head list;
 206 };
 207
 208 /********************************************************************/
 209 /* Function prototypes                                              */
 210 /********************************************************************/
 211
 212 static void __orinoco_set_multicast_list(struct net_device *dev);
 213
 214 /********************************************************************/
 215 /* Internal helper functions                                        */
 216 /********************************************************************/
 217
 218 void set_port_type(struct orinoco_private *priv)
 219 {
 220         switch (priv->iw_mode) {
 221         case IW_MODE_INFRA:
 222                 priv->port_type = 1;
 223                 priv->createibss = 0;
 224                 break;
 225         case IW_MODE_ADHOC:
 226                 if (priv->prefer_port3) {
 227                         priv->port_type = 3;
 228                         priv->createibss = 0;
 229                 } else {
 230                         priv->port_type = priv->ibss_port;
 231                         priv->createibss = 1;
 232                 }
 233                 break;
 234         case IW_MODE_MONITOR:
 235                 priv->port_type = 3;
 236                 priv->createibss = 0;
 237                 break;
 238         default:
 239                 printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
 240                        priv->ndev->name);
 241         }
 242 }
 243
 244 /********************************************************************/
 245 /* Device methods                                                   */
 246 /********************************************************************/
 247
 248 static int orinoco_open(struct net_device *dev)
 249 {
 250         struct orinoco_private *priv = netdev_priv(dev);
 251         unsigned long flags;
 252         int err;
 253
 254         if (orinoco_lock(priv, &flags) != 0)
 255                 return -EBUSY;
 256
 257         err = __orinoco_up(dev);
 258
 259         if (!err)
 260                 priv->open = 1;
 261
 262         orinoco_unlock(priv, &flags);
 263
 264         return err;
 265 }
 266
 267 static int orinoco_stop(struct net_device *dev)
 268 {
 269         struct orinoco_private *priv = netdev_priv(dev);
 270         int err = 0;
 271
 272         /* We mustn't use orinoco_lock() here, because we need to be
 273            able to close the interface even if hw_unavailable is set
 274            (e.g. as we're released after a PC Card removal) */
 275         spin_lock_irq(&priv->lock);
 276
 277         priv->open = 0;
 278
 279         err = __orinoco_down(dev);
 280
 281         spin_unlock_irq(&priv->lock);
 282
 283         return err;
 284 }
 285
 286 static struct net_device_stats *orinoco_get_stats(struct net_device *dev)
 287 {
 288         struct orinoco_private *priv = netdev_priv(dev);
 289
 290         return &priv->stats;
 291 }
 292
 293 static void orinoco_set_multicast_list(struct net_device *dev)
 294 {
 295         struct orinoco_private *priv = netdev_priv(dev);
 296         unsigned long flags;
 297
 298         if (orinoco_lock(priv, &flags) != 0) {
 299                 printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
 300                        "called when hw_unavailable\n", dev->name);
 301                 return;
 302         }
 303
 304         __orinoco_set_multicast_list(dev);
 305         orinoco_unlock(priv, &flags);
 306 }
 307
 308 static int orinoco_change_mtu(struct net_device *dev, int new_mtu)
 309 {
 310         struct orinoco_private *priv = netdev_priv(dev);
 311
 312         if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU))
 313                 return -EINVAL;
 314
 315         /* MTU + encapsulation + header length */
 316         if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) >
 317              (priv->nicbuf_size - ETH_HLEN))
 318                 return -EINVAL;
 319
 320         dev->mtu = new_mtu;
 321
 322         return 0;
 323 }
 324
 325 /********************************************************************/
 326 /* Tx path                                                          */
 327 /********************************************************************/
 328
 329 static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
 330 {
 331         struct orinoco_private *priv = netdev_priv(dev);
 332         struct net_device_stats *stats = &priv->stats;
 333         hermes_t *hw = &priv->hw;
 334         int err = 0;
 335         u16 txfid = priv->txfid;
 336         struct ethhdr *eh;
 337         int tx_control;
 338         unsigned long flags;
 339
 340         if (!netif_running(dev)) {
 341                 printk(KERN_ERR "%s: Tx on stopped device!\n",
 342                        dev->name);
 343                 return NETDEV_TX_BUSY;
 344         }
 345
 346         if (netif_queue_stopped(dev)) {
 347                 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
 348                        dev->name);
 349                 return NETDEV_TX_BUSY;
 350         }
 351
 352         if (orinoco_lock(priv, &flags) != 0) {
 353                 printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
 354                        dev->name);
 355                 return NETDEV_TX_BUSY;
 356         }
 357
 358         if (!netif_carrier_ok(dev) || (priv->iw_mode == IW_MODE_MONITOR)) {
 359                 /* Oops, the firmware hasn't established a connection,
 360                    silently drop the packet (this seems to be the
 361                    safest approach). */
 362                 goto drop;
 363         }
 364
 365         /* Check packet length */
 366         if (skb->len < ETH_HLEN)
 367                 goto drop;
 368
 369         tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX;
 370
 371         if (priv->encode_alg == IW_ENCODE_ALG_TKIP)
 372                 tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) |
 373                         HERMES_TXCTRL_MIC;
 374
 375         if (priv->has_alt_txcntl) {
 376                 /* WPA enabled firmwares have tx_cntl at the end of
 377                  * the 802.11 header.  So write zeroed descriptor and
 378                  * 802.11 header at the same time
 379                  */
 380                 char desc[HERMES_802_3_OFFSET];
 381                 __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET];
 382
 383                 memset(&desc, 0, sizeof(desc));
 384
 385                 *txcntl = cpu_to_le16(tx_control);
 386                 err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
 387                                         txfid, 0);
 388                 if (err) {
 389                         if (net_ratelimit())
 390                                 printk(KERN_ERR "%s: Error %d writing Tx "
 391                                        "descriptor to BAP\n", dev->name, err);
 392                         goto busy;
 393                 }
 394         } else {
 395                 struct hermes_tx_descriptor desc;
 396
 397                 memset(&desc, 0, sizeof(desc));
 398
 399                 desc.tx_control = cpu_to_le16(tx_control);
 400                 err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
 401                                         txfid, 0);
 402                 if (err) {
 403                         if (net_ratelimit())
 404                                 printk(KERN_ERR "%s: Error %d writing Tx "
 405                                        "descriptor to BAP\n", dev->name, err);
 406                         goto busy;
 407                 }
 408
 409                 /* Clear the 802.11 header and data length fields - some
 410                  * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused
 411                  * if this isn't done. */
 412                 hermes_clear_words(hw, HERMES_DATA0,
 413                                    HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
 414         }
 415
 416         eh = (struct ethhdr *)skb->data;
 417
 418         /* Encapsulate Ethernet-II frames */
 419         if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
 420                 struct header_struct {
 421                         struct ethhdr eth;      /* 802.3 header */
 422                         u8 encap[6];            /* 802.2 header */
 423                 } __attribute__ ((packed)) hdr;
 424
 425                 /* Strip destination and source from the data */
 426                 skb_pull(skb, 2 * ETH_ALEN);
 427
 428                 /* And move them to a separate header */
 429                 memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
 430                 hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len);
 431                 memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
 432
 433                 /* Insert the SNAP header */
 434                 if (skb_headroom(skb) < sizeof(hdr)) {
 435                         printk(KERN_ERR
 436                                "%s: Not enough headroom for 802.2 headers %d\n",
 437                                dev->name, skb_headroom(skb));
 438                         goto drop;
 439                 }
 440                 eh = (struct ethhdr *) skb_push(skb, sizeof(hdr));
 441                 memcpy(eh, &hdr, sizeof(hdr));
 442         }
 443
 444         err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len,
 445                                 txfid, HERMES_802_3_OFFSET);
 446         if (err) {
 447                 printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
 448                        dev->name, err);
 449                 goto busy;
 450         }
 451
 452         /* Calculate Michael MIC */
 453         if (priv->encode_alg == IW_ENCODE_ALG_TKIP) {
 454                 u8 mic_buf[MICHAEL_MIC_LEN + 1];
 455                 u8 *mic;
 456                 size_t offset;
 457                 size_t len;
 458
 459                 if (skb->len % 2) {
 460                         /* MIC start is on an odd boundary */
 461                         mic_buf[0] = skb->data[skb->len - 1];
 462                         mic = &mic_buf[1];
 463                         offset = skb->len - 1;
 464                         len = MICHAEL_MIC_LEN + 1;
 465                 } else {
 466                         mic = &mic_buf[0];
 467                         offset = skb->len;
 468                         len = MICHAEL_MIC_LEN;
 469                 }
 470
 471                 orinoco_mic(priv->tx_tfm_mic,
 472                             priv->tkip_key[priv->tx_key].tx_mic,
 473                             eh->h_dest, eh->h_source, 0 /* priority */,
 474                             skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic);
 475
 476                 /* Write the MIC */
 477                 err = hermes_bap_pwrite(hw, USER_BAP, &mic_buf[0], len,
 478                                         txfid, HERMES_802_3_OFFSET + offset);
 479                 if (err) {
 480                         printk(KERN_ERR "%s: Error %d writing MIC to BAP\n",
 481                                dev->name, err);
 482                         goto busy;
 483                 }
 484         }
 485
 486         /* Finally, we actually initiate the send */
 487         netif_stop_queue(dev);
 488
 489         err = hermes_docmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
 490                                 txfid, NULL);
 491         if (err) {
 492                 netif_start_queue(dev);
 493                 if (net_ratelimit())
 494                         printk(KERN_ERR "%s: Error %d transmitting packet\n",
 495                                 dev->name, err);
 496                 goto busy;
 497         }
 498
 499         dev->trans_start = jiffies;
 500         stats->tx_bytes += HERMES_802_3_OFFSET + skb->len;
 501         goto ok;
 502
 503  drop:
 504         stats->tx_errors++;
 505         stats->tx_dropped++;
 506
 507  ok:
 508         orinoco_unlock(priv, &flags);
 509         dev_kfree_skb(skb);
 510         return NETDEV_TX_OK;
 511
 512  busy:
 513         if (err == -EIO)
 514                 schedule_work(&priv->reset_work);
 515         orinoco_unlock(priv, &flags);
 516         return NETDEV_TX_BUSY;
 517 }
 518
 519 static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw)
 520 {
 521         struct orinoco_private *priv = netdev_priv(dev);
 522         u16 fid = hermes_read_regn(hw, ALLOCFID);
 523
 524         if (fid != priv->txfid) {
 525                 if (fid != DUMMY_FID)
 526                         printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
 527                                dev->name, fid);
 528                 return;
 529         }
 530
 531         hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
 532 }
 533
 534 static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw)
 535 {
 536         struct orinoco_private *priv = netdev_priv(dev);
 537         struct net_device_stats *stats = &priv->stats;
 538
 539         stats->tx_packets++;
 540
 541         netif_wake_queue(dev);
 542
 543         hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
 544 }
 545
 546 static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
 547 {
 548         struct orinoco_private *priv = netdev_priv(dev);
 549         struct net_device_stats *stats = &priv->stats;
 550         u16 fid = hermes_read_regn(hw, TXCOMPLFID);
 551         u16 status;
 552         struct hermes_txexc_data hdr;
 553         int err = 0;
 554
 555         if (fid == DUMMY_FID)
 556                 return; /* Nothing's really happened */
 557
 558         /* Read part of the frame header - we need status and addr1 */
 559         err = hermes_bap_pread(hw, IRQ_BAP, &hdr,
 560                                sizeof(struct hermes_txexc_data),
 561                                fid, 0);
 562
 563         hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
 564         stats->tx_errors++;
 565
 566         if (err) {
 567                 printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
 568                        "(FID=%04X error %d)\n",
 569                        dev->name, fid, err);
 570                 return;
 571         }
 572
 573         DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
 574               err, fid);
 575
 576         /* We produce a TXDROP event only for retry or lifetime
 577          * exceeded, because that's the only status that really mean
 578          * that this particular node went away.
 579          * Other errors means that *we* screwed up. - Jean II */
 580         status = le16_to_cpu(hdr.desc.status);
 581         if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
 582                 union iwreq_data        wrqu;
 583
 584                 /* Copy 802.11 dest address.
 585                  * We use the 802.11 header because the frame may
 586                  * not be 802.3 or may be mangled...
 587                  * In Ad-Hoc mode, it will be the node address.
 588                  * In managed mode, it will be most likely the AP addr
 589                  * User space will figure out how to convert it to
 590                  * whatever it needs (IP address or else).
 591                  * - Jean II */
 592                 memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
 593                 wrqu.addr.sa_family = ARPHRD_ETHER;
 594
 595                 /* Send event to user space */
 596                 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
 597         }
 598
 599         netif_wake_queue(dev);
 600 }
 601
 602 static void orinoco_tx_timeout(struct net_device *dev)
 603 {
 604         struct orinoco_private *priv = netdev_priv(dev);
 605         struct net_device_stats *stats = &priv->stats;
 606         struct hermes *hw = &priv->hw;
 607
 608         printk(KERN_WARNING "%s: Tx timeout! "
 609                "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
 610                dev->name, hermes_read_regn(hw, ALLOCFID),
 611                hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
 612
 613         stats->tx_errors++;
 614
 615         schedule_work(&priv->reset_work);
 616 }
 617
 618 /********************************************************************/
 619 /* Rx path (data frames)                                            */
 620 /********************************************************************/
 621
 622 /* Does the frame have a SNAP header indicating it should be
 623  * de-encapsulated to Ethernet-II? */
 624 static inline int is_ethersnap(void *_hdr)
 625 {
 626         u8 *hdr = _hdr;
 627
 628         /* We de-encapsulate all packets which, a) have SNAP headers
 629          * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header
 630          * and where b) the OUI of the SNAP header is 00:00:00 or
 631          * 00:00:f8 - we need both because different APs appear to use
 632          * different OUIs for some reason */
 633         return (memcmp(hdr, &encaps_hdr, 5) == 0)
 634                 && ((hdr[5] == 0x00) || (hdr[5] == 0xf8));
 635 }
 636
 637 static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
 638                                       int level, int noise)
 639 {
 640         struct iw_quality wstats;
 641         wstats.level = level - 0x95;
 642         wstats.noise = noise - 0x95;
 643         wstats.qual = (level > noise) ? (level - noise) : 0;
 644         wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
 645         /* Update spy records */
 646         wireless_spy_update(dev, mac, &wstats);
 647 }
 648
 649 static void orinoco_stat_gather(struct net_device *dev,
 650                                 struct sk_buff *skb,
 651                                 struct hermes_rx_descriptor *desc)
 652 {
 653         struct orinoco_private *priv = netdev_priv(dev);
 654
 655         /* Using spy support with lots of Rx packets, like in an
 656          * infrastructure (AP), will really slow down everything, because
 657          * the MAC address must be compared to each entry of the spy list.
 658          * If the user really asks for it (set some address in the
 659          * spy list), we do it, but he will pay the price.
 660          * Note that to get here, you need both WIRELESS_SPY
 661          * compiled in AND some addresses in the list !!!
 662          */
 663         /* Note : gcc will optimise the whole section away if
 664          * WIRELESS_SPY is not defined... - Jean II */
 665         if (SPY_NUMBER(priv)) {
 666                 orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN,
 667                                    desc->signal, desc->silence);
 668         }
 669 }
 670
 671 /*
 672  * orinoco_rx_monitor - handle received monitor frames.
 673  *
 674  * Arguments:
 675  *      dev             network device
 676  *      rxfid           received FID
 677  *      desc            rx descriptor of the frame
 678  *
 679  * Call context: interrupt
 680  */
 681 static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
 682                                struct hermes_rx_descriptor *desc)
 683 {
 684         u32 hdrlen = 30;        /* return full header by default */
 685         u32 datalen = 0;
 686         u16 fc;
 687         int err;
 688         int len;
 689         struct sk_buff *skb;
 690         struct orinoco_private *priv = netdev_priv(dev);
 691         struct net_device_stats *stats = &priv->stats;
 692         hermes_t *hw = &priv->hw;
 693
 694         len = le16_to_cpu(desc->data_len);
 695
 696         /* Determine the size of the header and the data */
 697         fc = le16_to_cpu(desc->frame_ctl);
 698         switch (fc & IEEE80211_FCTL_FTYPE) {
 699         case IEEE80211_FTYPE_DATA:
 700                 if ((fc & IEEE80211_FCTL_TODS)
 701                     && (fc & IEEE80211_FCTL_FROMDS))
 702                         hdrlen = 30;
 703                 else
 704                         hdrlen = 24;
 705                 datalen = len;
 706                 break;
 707         case IEEE80211_FTYPE_MGMT:
 708                 hdrlen = 24;
 709                 datalen = len;
 710                 break;
 711         case IEEE80211_FTYPE_CTL:
 712                 switch (fc & IEEE80211_FCTL_STYPE) {
 713                 case IEEE80211_STYPE_PSPOLL:
 714                 case IEEE80211_STYPE_RTS:
 715                 case IEEE80211_STYPE_CFEND:
 716                 case IEEE80211_STYPE_CFENDACK:
 717                         hdrlen = 16;
 718                         break;
 719                 case IEEE80211_STYPE_CTS:
 720                 case IEEE80211_STYPE_ACK:
 721                         hdrlen = 10;
 722                         break;
 723                 }
 724                 break;
 725         default:
 726                 /* Unknown frame type */
 727                 break;
 728         }
 729
 730         /* sanity check the length */
 731         if (datalen > IEEE80211_MAX_DATA_LEN + 12) {
 732                 printk(KERN_DEBUG "%s: oversized monitor frame, "
 733                        "data length = %d\n", dev->name, datalen);
 734                 stats->rx_length_errors++;
 735                 goto update_stats;
 736         }
 737
 738         skb = dev_alloc_skb(hdrlen + datalen);
 739         if (!skb) {
 740                 printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
 741                        dev->name);
 742                 goto update_stats;
 743         }
 744
 745         /* Copy the 802.11 header to the skb */
 746         memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
 747         skb_reset_mac_header(skb);
 748
 749         /* If any, copy the data from the card to the skb */
 750         if (datalen > 0) {
 751                 err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
 752                                        ALIGN(datalen, 2), rxfid,
 753                                        HERMES_802_2_OFFSET);
 754                 if (err) {
 755                         printk(KERN_ERR "%s: error %d reading monitor frame\n",
 756                                dev->name, err);
 757                         goto drop;
 758                 }
 759         }
 760
 761         skb->dev = dev;
 762         skb->ip_summed = CHECKSUM_NONE;
 763         skb->pkt_type = PACKET_OTHERHOST;
 764         skb->protocol = cpu_to_be16(ETH_P_802_2);
 765
 766         stats->rx_packets++;
 767         stats->rx_bytes += skb->len;
 768
 769         netif_rx(skb);
 770         return;
 771
 772  drop:
 773         dev_kfree_skb_irq(skb);
 774  update_stats:
 775         stats->rx_errors++;
 776         stats->rx_dropped++;
 777 }
 778
 779 static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
 780 {
 781         struct orinoco_private *priv = netdev_priv(dev);
 782         struct net_device_stats *stats = &priv->stats;
 783         struct iw_statistics *wstats = &priv->wstats;
 784         struct sk_buff *skb = NULL;
 785         u16 rxfid, status;
 786         int length;
 787         struct hermes_rx_descriptor *desc;
 788         struct orinoco_rx_data *rx_data;
 789         int err;
 790
 791         desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
 792         if (!desc) {
 793                 printk(KERN_WARNING
 794                        "%s: Can't allocate space for RX descriptor\n",
 795                        dev->name);
 796                 goto update_stats;
 797         }
 798
 799         rxfid = hermes_read_regn(hw, RXFID);
 800
 801         err = hermes_bap_pread(hw, IRQ_BAP, desc, sizeof(*desc),
 802                                rxfid, 0);
 803         if (err) {
 804                 printk(KERN_ERR "%s: error %d reading Rx descriptor. "
 805                        "Frame dropped.\n", dev->name, err);
 806                 goto update_stats;
 807         }
 808
 809         status = le16_to_cpu(desc->status);
 810
 811         if (status & HERMES_RXSTAT_BADCRC) {
 812                 DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
 813                       dev->name);
 814                 stats->rx_crc_errors++;
 815                 goto update_stats;
 816         }
 817
 818         /* Handle frames in monitor mode */
 819         if (priv->iw_mode == IW_MODE_MONITOR) {
 820                 orinoco_rx_monitor(dev, rxfid, desc);
 821                 goto out;
 822         }
 823
 824         if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
 825                 DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
 826                       dev->name);
 827                 wstats->discard.code++;
 828                 goto update_stats;
 829         }
 830
 831         length = le16_to_cpu(desc->data_len);
 832
 833         /* Sanity checks */
 834         if (length < 3) { /* No for even an 802.2 LLC header */
 835                 /* At least on Symbol firmware with PCF we get quite a
 836                    lot of these legitimately - Poll frames with no
 837                    data. */
 838                 goto out;
 839         }
 840         if (length > IEEE80211_MAX_DATA_LEN) {
 841                 printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
 842                        dev->name, length);
 843                 stats->rx_length_errors++;
 844                 goto update_stats;
 845         }
 846
 847         /* Payload size does not include Michael MIC. Increase payload
 848          * size to read it together with the data. */
 849         if (status & HERMES_RXSTAT_MIC)
 850                 length += MICHAEL_MIC_LEN;
 851
 852         /* We need space for the packet data itself, plus an ethernet
 853            header, plus 2 bytes so we can align the IP header on a
 854            32bit boundary, plus 1 byte so we can read in odd length
 855            packets from the card, which has an IO granularity of 16
 856            bits */
 857         skb = dev_alloc_skb(length+ETH_HLEN+2+1);
 858         if (!skb) {
 859                 printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
 860                        dev->name);
 861                 goto update_stats;
 862         }
 863
 864         /* We'll prepend the header, so reserve space for it.  The worst
 865            case is no decapsulation, when 802.3 header is prepended and
 866            nothing is removed.  2 is for aligning the IP header.  */
 867         skb_reserve(skb, ETH_HLEN + 2);
 868
 869         err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, length),
 870                                ALIGN(length, 2), rxfid,
 871                                HERMES_802_2_OFFSET);
 872         if (err) {
 873                 printk(KERN_ERR "%s: error %d reading frame. "
 874                        "Frame dropped.\n", dev->name, err);
 875                 goto drop;
 876         }
 877
 878         /* Add desc and skb to rx queue */
 879         rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC);
 880         if (!rx_data) {
 881                 printk(KERN_WARNING "%s: Can't allocate RX packet\n",
 882                         dev->name);
 883                 goto drop;
 884         }
 885         rx_data->desc = desc;
 886         rx_data->skb = skb;
 887         list_add_tail(&rx_data->list, &priv->rx_list);
 888         tasklet_schedule(&priv->rx_tasklet);
 889
 890         return;
 891
 892 drop:
 893         dev_kfree_skb_irq(skb);
 894 update_stats:
 895         stats->rx_errors++;
 896         stats->rx_dropped++;
 897 out:
 898         kfree(desc);
 899 }
 900
 901 static void orinoco_rx(struct net_device *dev,
 902                        struct hermes_rx_descriptor *desc,
 903                        struct sk_buff *skb)
 904 {
 905         struct orinoco_private *priv = netdev_priv(dev);
 906         struct net_device_stats *stats = &priv->stats;
 907         u16 status, fc;
 908         int length;
 909         struct ethhdr *hdr;
 910
 911         status = le16_to_cpu(desc->status);
 912         length = le16_to_cpu(desc->data_len);
 913         fc = le16_to_cpu(desc->frame_ctl);
 914
 915         /* Calculate and check MIC */
 916         if (status & HERMES_RXSTAT_MIC) {
 917                 int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >>
 918                               HERMES_MIC_KEY_ID_SHIFT);
 919                 u8 mic[MICHAEL_MIC_LEN];
 920                 u8 *rxmic;
 921                 u8 *src = (fc & IEEE80211_FCTL_FROMDS) ?
 922                         desc->addr3 : desc->addr2;
 923
 924                 /* Extract Michael MIC from payload */
 925                 rxmic = skb->data + skb->len - MICHAEL_MIC_LEN;
 926
 927                 skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
 928                 length -= MICHAEL_MIC_LEN;
 929
 930                 orinoco_mic(priv->rx_tfm_mic,
 931                             priv->tkip_key[key_id].rx_mic,
 932                             desc->addr1,
 933                             src,
 934                             0, /* priority or QoS? */
 935                             skb->data,
 936                             skb->len,
 937                             &mic[0]);
 938
 939                 if (memcmp(mic, rxmic,
 940                            MICHAEL_MIC_LEN)) {
 941                         union iwreq_data wrqu;
 942                         struct iw_michaelmicfailure wxmic;
 943
 944                         printk(KERN_WARNING "%s: "
 945                                "Invalid Michael MIC in data frame from %pM, "
 946                                "using key %i\n",
 947                                dev->name, src, key_id);
 948
 949                         /* TODO: update stats */
 950
 951                         /* Notify userspace */
 952                         memset(&wxmic, 0, sizeof(wxmic));
 953                         wxmic.flags = key_id & IW_MICFAILURE_KEY_ID;
 954                         wxmic.flags |= (desc->addr1[0] & 1) ?
 955                                 IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE;
 956                         wxmic.src_addr.sa_family = ARPHRD_ETHER;
 957                         memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN);
 958
 959                         (void) orinoco_hw_get_tkip_iv(priv, key_id,
 960                                                       &wxmic.tsc[0]);
 961
 962                         memset(&wrqu, 0, sizeof(wrqu));
 963                         wrqu.data.length = sizeof(wxmic);
 964                         wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu,
 965                                             (char *) &wxmic);
 966
 967                         goto drop;
 968                 }
 969         }
 970
 971         /* Handle decapsulation
 972          * In most cases, the firmware tell us about SNAP frames.
 973          * For some reason, the SNAP frames sent by LinkSys APs
 974          * are not properly recognised by most firmwares.
 975          * So, check ourselves */
 976         if (length >= ENCAPS_OVERHEAD &&
 977             (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
 978              ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
 979              is_ethersnap(skb->data))) {
 980                 /* These indicate a SNAP within 802.2 LLC within
 981                    802.11 frame which we'll need to de-encapsulate to
 982                    the original EthernetII frame. */
 983                 hdr = (struct ethhdr *)skb_push(skb,
 984                                                 ETH_HLEN - ENCAPS_OVERHEAD);
 985         } else {
 986                 /* 802.3 frame - prepend 802.3 header as is */
 987                 hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
 988                 hdr->h_proto = htons(length);
 989         }
 990         memcpy(hdr->h_dest, desc->addr1, ETH_ALEN);
 991         if (fc & IEEE80211_FCTL_FROMDS)
 992                 memcpy(hdr->h_source, desc->addr3, ETH_ALEN);
 993         else
 994                 memcpy(hdr->h_source, desc->addr2, ETH_ALEN);
 995
 996         skb->protocol = eth_type_trans(skb, dev);
 997         skb->ip_summed = CHECKSUM_NONE;
 998         if (fc & IEEE80211_FCTL_TODS)
 999                 skb->pkt_type = PACKET_OTHERHOST;
1000
1001         /* Process the wireless stats if needed */
1002         orinoco_stat_gather(dev, skb, desc);
1003
1004         /* Pass the packet to the networking stack */
1005         netif_rx(skb);
1006         stats->rx_packets++;
1007         stats->rx_bytes += length;
1008
1009         return;
1010
1011  drop:
1012         dev_kfree_skb(skb);
1013         stats->rx_errors++;
1014         stats->rx_dropped++;
1015 }
1016
1017 static void orinoco_rx_isr_tasklet(unsigned long data)
1018 {
1019         struct net_device *dev = (struct net_device *) data;
1020         struct orinoco_private *priv = netdev_priv(dev);
1021         struct orinoco_rx_data *rx_data, *temp;
1022         struct hermes_rx_descriptor *desc;
1023         struct sk_buff *skb;
1024         unsigned long flags;
1025
1026         /* orinoco_rx requires the driver lock, and we also need to
1027          * protect priv->rx_list, so just hold the lock over the
1028          * lot.
1029          *
1030          * If orinoco_lock fails, we've unplugged the card. In this
1031          * case just abort. */
1032         if (orinoco_lock(priv, &flags) != 0)
1033                 return;
1034
1035         /* extract desc and skb from queue */
1036         list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
1037                 desc = rx_data->desc;
1038                 skb = rx_data->skb;
1039                 list_del(&rx_data->list);
1040                 kfree(rx_data);
1041
1042                 orinoco_rx(dev, desc, skb);
1043
1044                 kfree(desc);
1045         }
1046
1047         orinoco_unlock(priv, &flags);
1048 }
1049
1050 /********************************************************************/
1051 /* Rx path (info frames)                                            */
1052 /********************************************************************/
1053
1054 static void print_linkstatus(struct net_device *dev, u16 status)
1055 {
1056         char *s;
1057
1058         if (suppress_linkstatus)
1059                 return;
1060
1061         switch (status) {
1062         case HERMES_LINKSTATUS_NOT_CONNECTED:
1063                 s = "Not Connected";
1064                 break;
1065         case HERMES_LINKSTATUS_CONNECTED:
1066                 s = "Connected";
1067                 break;
1068         case HERMES_LINKSTATUS_DISCONNECTED:
1069                 s = "Disconnected";
1070                 break;
1071         case HERMES_LINKSTATUS_AP_CHANGE:
1072                 s = "AP Changed";
1073                 break;
1074         case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
1075                 s = "AP Out of Range";
1076                 break;
1077         case HERMES_LINKSTATUS_AP_IN_RANGE:
1078                 s = "AP In Range";
1079                 break;
1080         case HERMES_LINKSTATUS_ASSOC_FAILED:
1081                 s = "Association Failed";
1082                 break;
1083         default:
1084                 s = "UNKNOWN";
1085         }
1086
1087         printk(KERN_DEBUG "%s: New link status: %s (%04x)\n",
1088                dev->name, s, status);
1089 }
1090
1091 /* Search scan results for requested BSSID, join it if found */
1092 static void orinoco_join_ap(struct work_struct *work)
1093 {
1094         struct orinoco_private *priv =
1095                 container_of(work, struct orinoco_private, join_work);
1096         struct net_device *dev = priv->ndev;
1097         struct hermes *hw = &priv->hw;
1098         int err;
1099         unsigned long flags;
1100         struct join_req {
1101                 u8 bssid[ETH_ALEN];
1102                 __le16 channel;
1103         } __attribute__ ((packed)) req;
1104         const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
1105         struct prism2_scan_apinfo *atom = NULL;
1106         int offset = 4;
1107         int found = 0;
1108         u8 *buf;
1109         u16 len;
1110
1111         /* Allocate buffer for scan results */
1112         buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
1113         if (!buf)
1114                 return;
1115
1116         if (orinoco_lock(priv, &flags) != 0)
1117                 goto fail_lock;
1118
1119         /* Sanity checks in case user changed something in the meantime */
1120         if (!priv->bssid_fixed)
1121                 goto out;
1122
1123         if (strlen(priv->desired_essid) == 0)
1124                 goto out;
1125
1126         /* Read scan results from the firmware */
1127         err = hermes_read_ltv(hw, USER_BAP,
1128                               HERMES_RID_SCANRESULTSTABLE,
1129                               MAX_SCAN_LEN, &len, buf);
1130         if (err) {
1131                 printk(KERN_ERR "%s: Cannot read scan results\n",
1132                        dev->name);
1133                 goto out;
1134         }
1135
1136         len = HERMES_RECLEN_TO_BYTES(len);
1137
1138         /* Go through the scan results looking for the channel of the AP
1139          * we were requested to join */
1140         for (; offset + atom_len <= len; offset += atom_len) {
1141                 atom = (struct prism2_scan_apinfo *) (buf + offset);
1142                 if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
1143                         found = 1;
1144                         break;
1145                 }
1146         }
1147
1148         if (!found) {
1149                 DEBUG(1, "%s: Requested AP not found in scan results\n",
1150                       dev->name);
1151                 goto out;
1152         }
1153
1154         memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
1155         req.channel = atom->channel;    /* both are little-endian */
1156         err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
1157                                   &req);
1158         if (err)
1159                 printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
1160
1161  out:
1162         orinoco_unlock(priv, &flags);
1163
1164  fail_lock:
1165         kfree(buf);
1166 }
1167
1168 /* Send new BSSID to userspace */
1169 static void orinoco_send_bssid_wevent(struct orinoco_private *priv)
1170 {
1171         struct net_device *dev = priv->ndev;
1172         struct hermes *hw = &priv->hw;
1173         union iwreq_data wrqu;
1174         int err;
1175
1176         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
1177                               ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
1178         if (err != 0)
1179                 return;
1180
1181         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1182
1183         /* Send event to user space */
1184         wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
1185 }
1186
1187 static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv)
1188 {
1189         struct net_device *dev = priv->ndev;
1190         struct hermes *hw = &priv->hw;
1191         union iwreq_data wrqu;
1192         int err;
1193         u8 buf[88];
1194         u8 *ie;
1195
1196         if (!priv->has_wpa)
1197                 return;
1198
1199         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO,
1200                               sizeof(buf), NULL, &buf);
1201         if (err != 0)
1202                 return;
1203
1204         ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1205         if (ie) {
1206                 int rem = sizeof(buf) - (ie - &buf[0]);
1207                 wrqu.data.length = ie[1] + 2;
1208                 if (wrqu.data.length > rem)
1209                         wrqu.data.length = rem;
1210
1211                 if (wrqu.data.length)
1212                         /* Send event to user space */
1213                         wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie);
1214         }
1215 }
1216
1217 static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv)
1218 {
1219         struct net_device *dev = priv->ndev;
1220         struct hermes *hw = &priv->hw;
1221         union iwreq_data wrqu;
1222         int err;
1223         u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */
1224         u8 *ie;
1225
1226         if (!priv->has_wpa)
1227                 return;
1228
1229         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_RESP_INFO,
1230                               sizeof(buf), NULL, &buf);
1231         if (err != 0)
1232                 return;
1233
1234         ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1235         if (ie) {
1236                 int rem = sizeof(buf) - (ie - &buf[0]);
1237                 wrqu.data.length = ie[1] + 2;
1238                 if (wrqu.data.length > rem)
1239                         wrqu.data.length = rem;
1240
1241                 if (wrqu.data.length)
1242                         /* Send event to user space */
1243                         wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie);
1244         }
1245 }
1246
1247 static void orinoco_send_wevents(struct work_struct *work)
1248 {
1249         struct orinoco_private *priv =
1250                 container_of(work, struct orinoco_private, wevent_work);
1251         unsigned long flags;
1252
1253         if (orinoco_lock(priv, &flags) != 0)
1254                 return;
1255
1256         orinoco_send_assocreqie_wevent(priv);
1257         orinoco_send_assocrespie_wevent(priv);
1258         orinoco_send_bssid_wevent(priv);
1259
1260         orinoco_unlock(priv, &flags);
1261 }
1262
1263 static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)
1264 {
1265         struct orinoco_private *priv = netdev_priv(dev);
1266         u16 infofid;
1267         struct {
1268                 __le16 len;
1269                 __le16 type;
1270         } __attribute__ ((packed)) info;
1271         int len, type;
1272         int err;
1273
1274         /* This is an answer to an INQUIRE command that we did earlier,
1275          * or an information "event" generated by the card
1276          * The controller return to us a pseudo frame containing
1277          * the information in question - Jean II */
1278         infofid = hermes_read_regn(hw, INFOFID);
1279
1280         /* Read the info frame header - don't try too hard */
1281         err = hermes_bap_pread(hw, IRQ_BAP, &info, sizeof(info),
1282                                infofid, 0);
1283         if (err) {
1284                 printk(KERN_ERR "%s: error %d reading info frame. "
1285                        "Frame dropped.\n", dev->name, err);
1286                 return;
1287         }
1288
1289         len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
1290         type = le16_to_cpu(info.type);
1291
1292         switch (type) {
1293         case HERMES_INQ_TALLIES: {
1294                 struct hermes_tallies_frame tallies;
1295                 struct iw_statistics *wstats = &priv->wstats;
1296
1297                 if (len > sizeof(tallies)) {
1298                         printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
1299                                dev->name, len);
1300                         len = sizeof(tallies);
1301                 }
1302
1303                 err = hermes_bap_pread(hw, IRQ_BAP, &tallies, len,
1304                                        infofid, sizeof(info));
1305                 if (err)
1306                         break;
1307
1308                 /* Increment our various counters */
1309                 /* wstats->discard.nwid - no wrong BSSID stuff */
1310                 wstats->discard.code +=
1311                         le16_to_cpu(tallies.RxWEPUndecryptable);
1312                 if (len == sizeof(tallies))
1313                         wstats->discard.code +=
1314                                 le16_to_cpu(tallies.RxDiscards_WEPICVError) +
1315                                 le16_to_cpu(tallies.RxDiscards_WEPExcluded);
1316                 wstats->discard.misc +=
1317                         le16_to_cpu(tallies.TxDiscardsWrongSA);
1318                 wstats->discard.fragment +=
1319                         le16_to_cpu(tallies.RxMsgInBadMsgFragments);
1320                 wstats->discard.retries +=
1321                         le16_to_cpu(tallies.TxRetryLimitExceeded);
1322                 /* wstats->miss.beacon - no match */
1323         }
1324         break;
1325         case HERMES_INQ_LINKSTATUS: {
1326                 struct hermes_linkstatus linkstatus;
1327                 u16 newstatus;
1328                 int connected;
1329
1330                 if (priv->iw_mode == IW_MODE_MONITOR)
1331                         break;
1332
1333                 if (len != sizeof(linkstatus)) {
1334                         printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
1335                                dev->name, len);
1336                         break;
1337                 }
1338
1339                 err = hermes_bap_pread(hw, IRQ_BAP, &linkstatus, len,
1340                                        infofid, sizeof(info));
1341                 if (err)
1342                         break;
1343                 newstatus = le16_to_cpu(linkstatus.linkstatus);
1344
1345                 /* Symbol firmware uses "out of range" to signal that
1346                  * the hostscan frame can be requested.  */
1347                 if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
1348                     priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
1349                     priv->has_hostscan && priv->scan_inprogress) {
1350                         hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
1351                         break;
1352                 }
1353
1354                 connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
1355                         || (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
1356                         || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
1357
1358                 if (connected)
1359                         netif_carrier_on(dev);
1360                 else if (!ignore_disconnect)
1361                         netif_carrier_off(dev);
1362
1363                 if (newstatus != priv->last_linkstatus) {
1364                         priv->last_linkstatus = newstatus;
1365                         print_linkstatus(dev, newstatus);
1366                         /* The info frame contains only one word which is the
1367                          * status (see hermes.h). The status is pretty boring
1368                          * in itself, that's why we export the new BSSID...
1369                          * Jean II */
1370                         schedule_work(&priv->wevent_work);
1371                 }
1372         }
1373         break;
1374         case HERMES_INQ_SCAN:
1375                 if (!priv->scan_inprogress && priv->bssid_fixed &&
1376                     priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
1377                         schedule_work(&priv->join_work);
1378                         break;
1379                 }
1380                 /* fall through */
1381         case HERMES_INQ_HOSTSCAN:
1382         case HERMES_INQ_HOSTSCAN_SYMBOL: {
1383                 /* Result of a scanning. Contains information about
1384                  * cells in the vicinity - Jean II */
1385                 union iwreq_data        wrqu;
1386                 unsigned char *buf;
1387
1388                 /* Scan is no longer in progress */
1389                 priv->scan_inprogress = 0;
1390
1391                 /* Sanity check */
1392                 if (len > 4096) {
1393                         printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
1394                                dev->name, len);
1395                         break;
1396                 }
1397
1398                 /* Allocate buffer for results */
1399                 buf = kmalloc(len, GFP_ATOMIC);
1400                 if (buf == NULL)
1401                         /* No memory, so can't printk()... */
1402                         break;
1403
1404                 /* Read scan data */
1405                 err = hermes_bap_pread(hw, IRQ_BAP, (void *) buf, len,
1406                                        infofid, sizeof(info));
1407                 if (err) {
1408                         kfree(buf);
1409                         break;
1410                 }
1411
1412 #ifdef ORINOCO_DEBUG
1413                 {
1414                         int     i;
1415                         printk(KERN_DEBUG "Scan result [%02X", buf[0]);
1416                         for (i = 1; i < (len * 2); i++)
1417                                 printk(":%02X", buf[i]);
1418                         printk("]\n");
1419                 }
1420 #endif  /* ORINOCO_DEBUG */
1421
1422                 if (orinoco_process_scan_results(priv, buf, len) == 0) {
1423                         /* Send an empty event to user space.
1424                          * We don't send the received data on the event because
1425                          * it would require us to do complex transcoding, and
1426                          * we want to minimise the work done in the irq handler
1427                          * Use a request to extract the data - Jean II */
1428                         wrqu.data.length = 0;
1429                         wrqu.data.flags = 0;
1430                         wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
1431                 }
1432                 kfree(buf);
1433         }
1434         break;
1435         case HERMES_INQ_CHANNELINFO:
1436         {
1437                 struct agere_ext_scan_info *bss;
1438
1439                 if (!priv->scan_inprogress) {
1440                         printk(KERN_DEBUG "%s: Got chaninfo without scan, "
1441                                "len=%d\n", dev->name, len);
1442                         break;
1443                 }
1444
1445                 /* An empty result indicates that the scan is complete */
1446                 if (len == 0) {
1447                         union iwreq_data        wrqu;
1448
1449                         /* Scan is no longer in progress */
1450                         priv->scan_inprogress = 0;
1451
1452                         wrqu.data.length = 0;
1453                         wrqu.data.flags = 0;
1454                         wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
1455                         break;
1456                 }
1457
1458                 /* Sanity check */
1459                 else if (len > sizeof(*bss)) {
1460                         printk(KERN_WARNING
1461                                "%s: Ext scan results too large (%d bytes). "
1462                                "Truncating results to %zd bytes.\n",
1463                                dev->name, len, sizeof(*bss));
1464                         len = sizeof(*bss);
1465                 } else if (len < (offsetof(struct agere_ext_scan_info,
1466                                            data) + 2)) {
1467                         /* Drop this result now so we don't have to
1468                          * keep checking later */
1469                         printk(KERN_WARNING
1470                                "%s: Ext scan results too short (%d bytes)\n",
1471                                dev->name, len);
1472                         break;
1473                 }
1474
1475                 bss = kmalloc(sizeof(*bss), GFP_ATOMIC);
1476                 if (bss == NULL)
1477                         break;
1478
1479                 /* Read scan data */
1480                 err = hermes_bap_pread(hw, IRQ_BAP, (void *) bss, len,
1481                                        infofid, sizeof(info));
1482                 if (err) {
1483                         kfree(bss);
1484                         break;
1485                 }
1486
1487                 orinoco_add_ext_scan_result(priv, bss);
1488
1489                 kfree(bss);
1490                 break;
1491         }
1492         case HERMES_INQ_SEC_STAT_AGERE:
1493                 /* Security status (Agere specific) */
1494                 /* Ignore this frame for now */
1495                 if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
1496                         break;
1497                 /* fall through */
1498         default:
1499                 printk(KERN_DEBUG "%s: Unknown information frame received: "
1500                        "type 0x%04x, length %d\n", dev->name, type, len);
1501                 /* We don't actually do anything about it */
1502                 break;
1503         }
1504 }
1505
1506 static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw)
1507 {
1508         if (net_ratelimit())
1509                 printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
1510 }
1511
1512 /********************************************************************/
1513 /* Internal hardware control routines                               */
1514 /********************************************************************/
1515
1516 int __orinoco_up(struct net_device *dev)
1517 {
1518         struct orinoco_private *priv = netdev_priv(dev);
1519         struct hermes *hw = &priv->hw;
1520         int err;
1521
1522         netif_carrier_off(dev); /* just to make sure */
1523
1524         err = __orinoco_program_rids(dev);
1525         if (err) {
1526                 printk(KERN_ERR "%s: Error %d configuring card\n",
1527                        dev->name, err);
1528                 return err;
1529         }
1530
1531         /* Fire things up again */
1532         hermes_set_irqmask(hw, ORINOCO_INTEN);
1533         err = hermes_enable_port(hw, 0);
1534         if (err) {
1535                 printk(KERN_ERR "%s: Error %d enabling MAC port\n",
1536                        dev->name, err);
1537                 return err;
1538         }
1539
1540         netif_start_queue(dev);
1541
1542         return 0;
1543 }
1544 EXPORT_SYMBOL(__orinoco_up);
1545
1546 int __orinoco_down(struct net_device *dev)
1547 {
1548         struct orinoco_private *priv = netdev_priv(dev);
1549         struct hermes *hw = &priv->hw;
1550         int err;
1551
1552         netif_stop_queue(dev);
1553
1554         if (!priv->hw_unavailable) {
1555                 if (!priv->broken_disableport) {
1556                         err = hermes_disable_port(hw, 0);
1557                         if (err) {
1558                                 /* Some firmwares (e.g. Intersil 1.3.x) seem
1559                                  * to have problems disabling the port, oh
1560                                  * well, too bad. */
1561                                 printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
1562                                        dev->name, err);
1563                                 priv->broken_disableport = 1;
1564                         }
1565                 }
1566                 hermes_set_irqmask(hw, 0);
1567                 hermes_write_regn(hw, EVACK, 0xffff);
1568         }
1569
1570         /* firmware will have to reassociate */
1571         netif_carrier_off(dev);
1572         priv->last_linkstatus = 0xffff;
1573
1574         return 0;
1575 }
1576 EXPORT_SYMBOL(__orinoco_down);
1577
1578 static int orinoco_allocate_fid(struct net_device *dev)
1579 {
1580         struct orinoco_private *priv = netdev_priv(dev);
1581         struct hermes *hw = &priv->hw;
1582         int err;
1583
1584         err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid);
1585         if (err == -EIO && priv->nicbuf_size > TX_NICBUF_SIZE_BUG) {
1586                 /* Try workaround for old Symbol firmware bug */
1587                 priv->nicbuf_size = TX_NICBUF_SIZE_BUG;
1588                 err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid);
1589
1590                 printk(KERN_WARNING "%s: firmware ALLOC bug detected "
1591                        "(old Symbol firmware?). Work around %s\n",
1592                        dev->name, err ? "failed!" : "ok.");
1593         }
1594
1595         return err;
1596 }
1597
1598 int orinoco_reinit_firmware(struct net_device *dev)
1599 {
1600         struct orinoco_private *priv = netdev_priv(dev);
1601         struct hermes *hw = &priv->hw;
1602         int err;
1603
1604         err = hermes_init(hw);
1605         if (priv->do_fw_download && !err) {
1606                 err = orinoco_download(priv);
1607                 if (err)
1608                         priv->do_fw_download = 0;
1609         }
1610         if (!err)
1611                 err = orinoco_allocate_fid(dev);
1612
1613         return err;
1614 }
1615 EXPORT_SYMBOL(orinoco_reinit_firmware);
1616
1617 int __orinoco_program_rids(struct net_device *dev)
1618 {
1619         struct orinoco_private *priv = netdev_priv(dev);
1620         hermes_t *hw = &priv->hw;
1621         int err;
1622         struct hermes_idstring idbuf;
1623
1624         /* Set the MAC address */
1625         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNMACADDR,
1626                                HERMES_BYTES_TO_RECLEN(ETH_ALEN), dev->dev_addr);
1627         if (err) {
1628                 printk(KERN_ERR "%s: Error %d setting MAC address\n",
1629                        dev->name, err);
1630                 return err;
1631         }
1632
1633         /* Set up the link mode */
1634         err = hermes_write_wordrec(hw, USER_BAP, HERMES_RID_CNFPORTTYPE,
1635                                    priv->port_type);
1636         if (err) {
1637                 printk(KERN_ERR "%s: Error %d setting port type\n",
1638                        dev->name, err);
1639                 return err;
1640         }
1641         /* Set the channel/frequency */
1642         if (priv->channel != 0 && priv->iw_mode != IW_MODE_INFRA) {
1643                 err = hermes_write_wordrec(hw, USER_BAP,
1644                                            HERMES_RID_CNFOWNCHANNEL,
1645                                            priv->channel);
1646                 if (err) {
1647                         printk(KERN_ERR "%s: Error %d setting channel %d\n",
1648                                dev->name, err, priv->channel);
1649                         return err;
1650                 }
1651         }
1652
1653         if (priv->has_ibss) {
1654                 u16 createibss;
1655
1656                 if ((strlen(priv->desired_essid) == 0) && (priv->createibss)) {
1657                         printk(KERN_WARNING "%s: This firmware requires an "
1658                                "ESSID in IBSS-Ad-Hoc mode.\n", dev->name);
1659                         /* With wvlan_cs, in this case, we would crash.
1660                          * hopefully, this driver will behave better...
1661                          * Jean II */
1662                         createibss = 0;
1663                 } else {
1664                         createibss = priv->createibss;
1665                 }
1666
1667                 err = hermes_write_wordrec(hw, USER_BAP,
1668                                            HERMES_RID_CNFCREATEIBSS,
1669                                            createibss);
1670                 if (err) {
1671                         printk(KERN_ERR "%s: Error %d setting CREATEIBSS\n",
1672                                dev->name, err);
1673                         return err;
1674                 }
1675         }
1676
1677         /* Set the desired BSSID */
1678         err = __orinoco_hw_set_wap(priv);
1679         if (err) {
1680                 printk(KERN_ERR "%s: Error %d setting AP address\n",
1681                        dev->name, err);
1682                 return err;
1683         }
1684         /* Set the desired ESSID */
1685         idbuf.len = cpu_to_le16(strlen(priv->desired_essid));
1686         memcpy(&idbuf.val, priv->desired_essid, sizeof(idbuf.val));
1687         /* WinXP wants partner to configure OWNSSID even in IBSS mode. (jimc) */
1688         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNSSID,
1689                         HERMES_BYTES_TO_RECLEN(strlen(priv->desired_essid)+2),
1690                         &idbuf);
1691         if (err) {
1692                 printk(KERN_ERR "%s: Error %d setting OWNSSID\n",
1693                        dev->name, err);
1694                 return err;
1695         }
1696         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFDESIREDSSID,
1697                         HERMES_BYTES_TO_RECLEN(strlen(priv->desired_essid)+2),
1698                         &idbuf);
1699         if (err) {
1700                 printk(KERN_ERR "%s: Error %d setting DESIREDSSID\n",
1701                        dev->name, err);
1702                 return err;
1703         }
1704
1705         /* Set the station name */
1706         idbuf.len = cpu_to_le16(strlen(priv->nick));
1707         memcpy(&idbuf.val, priv->nick, sizeof(idbuf.val));
1708         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNNAME,
1709                                HERMES_BYTES_TO_RECLEN(strlen(priv->nick)+2),
1710                                &idbuf);
1711         if (err) {
1712                 printk(KERN_ERR "%s: Error %d setting nickname\n",
1713                        dev->name, err);
1714                 return err;
1715         }
1716
1717         /* Set AP density */
1718         if (priv->has_sensitivity) {
1719                 err = hermes_write_wordrec(hw, USER_BAP,
1720                                            HERMES_RID_CNFSYSTEMSCALE,
1721                                            priv->ap_density);
1722                 if (err) {
1723                         printk(KERN_WARNING "%s: Error %d setting SYSTEMSCALE. "
1724                                "Disabling sensitivity control\n",
1725                                dev->name, err);
1726
1727                         priv->has_sensitivity = 0;
1728                 }
1729         }
1730
1731         /* Set RTS threshold */
1732         err = hermes_write_wordrec(hw, USER_BAP, HERMES_RID_CNFRTSTHRESHOLD,
1733                                    priv->rts_thresh);
1734         if (err) {
1735                 printk(KERN_ERR "%s: Error %d setting RTS threshold\n",
1736                        dev->name, err);
1737                 return err;
1738         }
1739
1740         /* Set fragmentation threshold or MWO robustness */
1741         if (priv->has_mwo)
1742                 err = hermes_write_wordrec(hw, USER_BAP,
1743                                            HERMES_RID_CNFMWOROBUST_AGERE,
1744                                            priv->mwo_robust);
1745         else
1746                 err = hermes_write_wordrec(hw, USER_BAP,
1747                                            HERMES_RID_CNFFRAGMENTATIONTHRESHOLD,
1748                                            priv->frag_thresh);
1749         if (err) {
1750                 printk(KERN_ERR "%s: Error %d setting fragmentation\n",
1751                        dev->name, err);
1752                 return err;
1753         }
1754
1755         /* Set bitrate */
1756         err = __orinoco_hw_set_bitrate(priv);
1757         if (err) {
1758                 printk(KERN_ERR "%s: Error %d setting bitrate\n",
1759                        dev->name, err);
1760                 return err;
1761         }
1762
1763         /* Set power management */
1764         if (priv->has_pm) {
1765                 err = hermes_write_wordrec(hw, USER_BAP,
1766                                            HERMES_RID_CNFPMENABLED,
1767                                            priv->pm_on);
1768                 if (err) {
1769                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1770                                dev->name, err);
1771                         return err;
1772                 }
1773
1774                 err = hermes_write_wordrec(hw, USER_BAP,
1775                                            HERMES_RID_CNFMULTICASTRECEIVE,
1776                                            priv->pm_mcast);
1777                 if (err) {
1778                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1779                                dev->name, err);
1780                         return err;
1781                 }
1782                 err = hermes_write_wordrec(hw, USER_BAP,
1783                                            HERMES_RID_CNFMAXSLEEPDURATION,
1784                                            priv->pm_period);
1785                 if (err) {
1786                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1787                                dev->name, err);
1788                         return err;
1789                 }
1790                 err = hermes_write_wordrec(hw, USER_BAP,
1791                                            HERMES_RID_CNFPMHOLDOVERDURATION,
1792                                            priv->pm_timeout);
1793                 if (err) {
1794                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1795                                dev->name, err);
1796                         return err;
1797                 }
1798         }
1799
1800         /* Set preamble - only for Symbol so far... */
1801         if (priv->has_preamble) {
1802                 err = hermes_write_wordrec(hw, USER_BAP,
1803                                            HERMES_RID_CNFPREAMBLE_SYMBOL,
1804                                            priv->preamble);
1805                 if (err) {
1806                         printk(KERN_ERR "%s: Error %d setting preamble\n",
1807                                dev->name, err);
1808                         return err;
1809                 }
1810         }
1811
1812         /* Set up encryption */
1813         if (priv->has_wep || priv->has_wpa) {
1814                 err = __orinoco_hw_setup_enc(priv);
1815                 if (err) {
1816                         printk(KERN_ERR "%s: Error %d activating encryption\n",
1817                                dev->name, err);
1818                         return err;
1819                 }
1820         }
1821
1822         if (priv->iw_mode == IW_MODE_MONITOR) {
1823                 /* Enable monitor mode */
1824                 dev->type = ARPHRD_IEEE80211;
1825                 err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
1826                                             HERMES_TEST_MONITOR, 0, NULL);
1827         } else {
1828                 /* Disable monitor mode */
1829                 dev->type = ARPHRD_ETHER;
1830                 err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
1831                                             HERMES_TEST_STOP, 0, NULL);
1832         }
1833         if (err)
1834                 return err;
1835
1836         /* Set promiscuity / multicast*/
1837         priv->promiscuous = 0;
1838         priv->mc_count = 0;
1839
1840         /* FIXME: what about netif_tx_lock */
1841         __orinoco_set_multicast_list(dev);
1842
1843         return 0;
1844 }
1845
1846 /* FIXME: return int? */
1847 static void
1848 __orinoco_set_multicast_list(struct net_device *dev)
1849 {
1850         struct orinoco_private *priv = netdev_priv(dev);
1851         int err = 0;
1852         int promisc, mc_count;
1853
1854         /* The Hermes doesn't seem to have an allmulti mode, so we go
1855          * into promiscuous mode and let the upper levels deal. */
1856         if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
1857             (dev->mc_count > MAX_MULTICAST(priv))) {
1858                 promisc = 1;
1859                 mc_count = 0;
1860         } else {
1861                 promisc = 0;
1862                 mc_count = dev->mc_count;
1863         }
1864
1865         err = __orinoco_hw_set_multicast_list(priv, dev->mc_list, mc_count,
1866                                               promisc);
1867 }
1868
1869 /* This must be called from user context, without locks held - use
1870  * schedule_work() */
1871 void orinoco_reset(struct work_struct *work)
1872 {
1873         struct orinoco_private *priv =
1874                 container_of(work, struct orinoco_private, reset_work);
1875         struct net_device *dev = priv->ndev;
1876         struct hermes *hw = &priv->hw;
1877         int err;
1878         unsigned long flags;
1879
1880         if (orinoco_lock(priv, &flags) != 0)
1881                 /* When the hardware becomes available again, whatever
1882                  * detects that is responsible for re-initializing
1883                  * it. So no need for anything further */
1884                 return;
1885
1886         netif_stop_queue(dev);
1887
1888         /* Shut off interrupts.  Depending on what state the hardware
1889          * is in, this might not work, but we'll try anyway */
1890         hermes_set_irqmask(hw, 0);
1891         hermes_write_regn(hw, EVACK, 0xffff);
1892
1893         priv->hw_unavailable++;
1894         priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */
1895         netif_carrier_off(dev);
1896
1897         orinoco_unlock(priv, &flags);
1898
1899         /* Scanning support: Cleanup of driver struct */
1900         orinoco_clear_scan_results(priv, 0);
1901         priv->scan_inprogress = 0;
1902
1903         if (priv->hard_reset) {
1904                 err = (*priv->hard_reset)(priv);
1905                 if (err) {
1906                         printk(KERN_ERR "%s: orinoco_reset: Error %d "
1907                                "performing hard reset\n", dev->name, err);
1908                         goto disable;
1909                 }
1910         }
1911
1912         err = orinoco_reinit_firmware(dev);
1913         if (err) {
1914                 printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
1915                        dev->name, err);
1916                 goto disable;
1917         }
1918
1919         /* This has to be called from user context */
1920         spin_lock_irq(&priv->lock);
1921
1922         priv->hw_unavailable--;
1923
1924         /* priv->open or priv->hw_unavailable might have changed while
1925          * we dropped the lock */
1926         if (priv->open && (!priv->hw_unavailable)) {
1927                 err = __orinoco_up(dev);
1928                 if (err) {
1929                         printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
1930                                dev->name, err);
1931                 } else
1932                         dev->trans_start = jiffies;
1933         }
1934
1935         spin_unlock_irq(&priv->lock);
1936
1937         return;
1938  disable:
1939         hermes_set_irqmask(hw, 0);
1940         netif_device_detach(dev);
1941         printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
1942 }
1943
1944 /********************************************************************/
1945 /* Interrupt handler                                                */
1946 /********************************************************************/
1947
1948 static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw)
1949 {
1950         printk(KERN_DEBUG "%s: TICK\n", dev->name);
1951 }
1952
1953 static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
1954 {
1955         /* This seems to happen a fair bit under load, but ignoring it
1956            seems to work fine...*/
1957         printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
1958                dev->name);
1959 }
1960
1961 irqreturn_t orinoco_interrupt(int irq, void *dev_id)
1962 {
1963         struct net_device *dev = dev_id;
1964         struct orinoco_private *priv = netdev_priv(dev);
1965         hermes_t *hw = &priv->hw;
1966         int count = MAX_IRQLOOPS_PER_IRQ;
1967         u16 evstat, events;
1968         /* These are used to detect a runaway interrupt situation.
1969          *
1970          * If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy,
1971          * we panic and shut down the hardware
1972          */
1973         /* jiffies value the last time we were called */
1974         static int last_irq_jiffy; /* = 0 */
1975         static int loops_this_jiffy; /* = 0 */
1976         unsigned long flags;
1977
1978         if (orinoco_lock(priv, &flags) != 0) {
1979                 /* If hw is unavailable - we don't know if the irq was
1980                  * for us or not */
1981                 return IRQ_HANDLED;
1982         }
1983
1984         evstat = hermes_read_regn(hw, EVSTAT);
1985         events = evstat & hw->inten;
1986         if (!events) {
1987                 orinoco_unlock(priv, &flags);
1988                 return IRQ_NONE;
1989         }
1990
1991         if (jiffies != last_irq_jiffy)
1992                 loops_this_jiffy = 0;
1993         last_irq_jiffy = jiffies;
1994
1995         while (events && count--) {
1996                 if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
1997                         printk(KERN_WARNING "%s: IRQ handler is looping too "
1998                                "much! Resetting.\n", dev->name);
1999                         /* Disable interrupts for now */
2000                         hermes_set_irqmask(hw, 0);
2001                         schedule_work(&priv->reset_work);
2002                         break;
2003                 }
2004
2005                 /* Check the card hasn't been removed */
2006                 if (!hermes_present(hw)) {
2007                         DEBUG(0, "orinoco_interrupt(): card removed\n");
2008                         break;
2009                 }
2010
2011                 if (events & HERMES_EV_TICK)
2012                         __orinoco_ev_tick(dev, hw);
2013                 if (events & HERMES_EV_WTERR)
2014                         __orinoco_ev_wterr(dev, hw);
2015                 if (events & HERMES_EV_INFDROP)
2016                         __orinoco_ev_infdrop(dev, hw);
2017                 if (events & HERMES_EV_INFO)
2018                         __orinoco_ev_info(dev, hw);
2019                 if (events & HERMES_EV_RX)
2020                         __orinoco_ev_rx(dev, hw);
2021                 if (events & HERMES_EV_TXEXC)
2022                         __orinoco_ev_txexc(dev, hw);
2023                 if (events & HERMES_EV_TX)
2024                         __orinoco_ev_tx(dev, hw);
2025                 if (events & HERMES_EV_ALLOC)
2026                         __orinoco_ev_alloc(dev, hw);
2027
2028                 hermes_write_regn(hw, EVACK, evstat);
2029
2030                 evstat = hermes_read_regn(hw, EVSTAT);
2031                 events = evstat & hw->inten;
2032         };
2033
2034         orinoco_unlock(priv, &flags);
2035         return IRQ_HANDLED;
2036 }
2037 EXPORT_SYMBOL(orinoco_interrupt);
2038
2039 /********************************************************************/
2040 /* Power management                                                 */
2041 /********************************************************************/
2042 #if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT)
2043 static int orinoco_pm_notifier(struct notifier_block *notifier,
2044                                unsigned long pm_event,
2045                                void *unused)
2046 {
2047         struct orinoco_private *priv = container_of(notifier,
2048                                                     struct orinoco_private,
2049                                                     pm_notifier);
2050
2051         /* All we need to do is cache the firmware before suspend, and
2052          * release it when we come out.
2053          *
2054          * Only need to do this if we're downloading firmware. */
2055         if (!priv->do_fw_download)
2056                 return NOTIFY_DONE;
2057
2058         switch (pm_event) {
2059         case PM_HIBERNATION_PREPARE:
2060         case PM_SUSPEND_PREPARE:
2061                 orinoco_cache_fw(priv, 0);
2062                 break;
2063
2064         case PM_POST_RESTORE:
2065                 /* Restore from hibernation failed. We need to clean
2066                  * up in exactly the same way, so fall through. */
2067         case PM_POST_HIBERNATION:
2068         case PM_POST_SUSPEND:
2069                 orinoco_uncache_fw(priv);
2070                 break;
2071
2072         case PM_RESTORE_PREPARE:
2073         default:
2074                 break;
2075         }
2076
2077         return NOTIFY_DONE;
2078 }
2079
2080 static void orinoco_register_pm_notifier(struct orinoco_private *priv)
2081 {
2082         priv->pm_notifier.notifier_call = orinoco_pm_notifier;
2083         register_pm_notifier(&priv->pm_notifier);
2084 }
2085
2086 static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
2087 {
2088         unregister_pm_notifier(&priv->pm_notifier);
2089 }
2090 #else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */
2091 #define orinoco_register_pm_notifier(priv) do { } while(0)
2092 #define orinoco_unregister_pm_notifier(priv) do { } while(0)
2093 #endif
2094
2095 /********************************************************************/
2096 /* Initialization                                                   */
2097 /********************************************************************/
2098
2099 struct comp_id {
2100         u16 id, variant, major, minor;
2101 } __attribute__ ((packed));
2102
2103 static inline fwtype_t determine_firmware_type(struct comp_id *nic_id)
2104 {
2105         if (nic_id->id < 0x8000)
2106                 return FIRMWARE_TYPE_AGERE;
2107         else if (nic_id->id == 0x8000 && nic_id->major == 0)
2108                 return FIRMWARE_TYPE_SYMBOL;
2109         else
2110                 return FIRMWARE_TYPE_INTERSIL;
2111 }
2112
2113 /* Set priv->firmware type, determine firmware properties */
2114 static int determine_firmware(struct net_device *dev)
2115 {
2116         struct orinoco_private *priv = netdev_priv(dev);
2117         hermes_t *hw = &priv->hw;
2118         int err;
2119         struct comp_id nic_id, sta_id;
2120         unsigned int firmver;
2121         char tmp[SYMBOL_MAX_VER_LEN+1] __attribute__((aligned(2)));
2122
2123         /* Get the hardware version */
2124         err = HERMES_READ_RECORD(hw, USER_BAP, HERMES_RID_NICID, &nic_id);
2125         if (err) {
2126                 printk(KERN_ERR "%s: Cannot read hardware identity: error %d\n",
2127                        dev->name, err);
2128                 return err;
2129         }
2130
2131         le16_to_cpus(&nic_id.id);
2132         le16_to_cpus(&nic_id.variant);
2133         le16_to_cpus(&nic_id.major);
2134         le16_to_cpus(&nic_id.minor);
2135         printk(KERN_DEBUG "%s: Hardware identity %04x:%04x:%04x:%04x\n",
2136                dev->name, nic_id.id, nic_id.variant,
2137                nic_id.major, nic_id.minor);
2138
2139         priv->firmware_type = determine_firmware_type(&nic_id);
2140
2141         /* Get the firmware version */
2142         err = HERMES_READ_RECORD(hw, USER_BAP, HERMES_RID_STAID, &sta_id);
2143         if (err) {
2144                 printk(KERN_ERR "%s: Cannot read station identity: error %d\n",
2145                        dev->name, err);
2146                 return err;
2147         }
2148
2149         le16_to_cpus(&sta_id.id);
2150         le16_to_cpus(&sta_id.variant);
2151         le16_to_cpus(&sta_id.major);
2152         le16_to_cpus(&sta_id.minor);
2153         printk(KERN_DEBUG "%s: Station identity  %04x:%04x:%04x:%04x\n",
2154                dev->name, sta_id.id, sta_id.variant,
2155                sta_id.major, sta_id.minor);
2156
2157         switch (sta_id.id) {
2158         case 0x15:
2159                 printk(KERN_ERR "%s: Primary firmware is active\n",
2160                        dev->name);
2161                 return -ENODEV;
2162         case 0x14b:
2163                 printk(KERN_ERR "%s: Tertiary firmware is active\n",
2164                        dev->name);
2165                 return -ENODEV;
2166         case 0x1f:      /* Intersil, Agere, Symbol Spectrum24 */
2167         case 0x21:      /* Symbol Spectrum24 Trilogy */
2168                 break;
2169         default:
2170                 printk(KERN_NOTICE "%s: Unknown station ID, please report\n",
2171                        dev->name);
2172                 break;
2173         }
2174
2175         /* Default capabilities */
2176         priv->has_sensitivity = 1;
2177         priv->has_mwo = 0;
2178         priv->has_preamble = 0;
2179         priv->has_port3 = 1;
2180         priv->has_ibss = 1;
2181         priv->has_wep = 0;
2182         priv->has_big_wep = 0;
2183         priv->has_alt_txcntl = 0;
2184         priv->has_ext_scan = 0;
2185         priv->has_wpa = 0;
2186         priv->do_fw_download = 0;
2187
2188         /* Determine capabilities from the firmware version */
2189         switch (priv->firmware_type) {
2190         case FIRMWARE_TYPE_AGERE:
2191                 /* Lucent Wavelan IEEE, Lucent Orinoco, Cabletron RoamAbout,
2192                    ELSA, Melco, HP, IBM, Dell 1150, Compaq 110/210 */
2193                 snprintf(priv->fw_name, sizeof(priv->fw_name) - 1,
2194                          "Lucent/Agere %d.%02d", sta_id.major, sta_id.minor);
2195
2196                 firmver = ((unsigned long)sta_id.major << 16) | sta_id.minor;
2197
2198                 priv->has_ibss = (firmver >= 0x60006);
2199                 priv->has_wep = (firmver >= 0x40020);
2200                 priv->has_big_wep = 1; /* FIXME: this is wrong - how do we tell
2201                                           Gold cards from the others? */
2202                 priv->has_mwo = (firmver >= 0x60000);
2203                 priv->has_pm = (firmver >= 0x40020); /* Don't work in 7.52 ? */
2204                 priv->ibss_port = 1;
2205                 priv->has_hostscan = (firmver >= 0x8000a);
2206                 priv->do_fw_download = 1;
2207                 priv->broken_monitor = (firmver >= 0x80000);
2208                 priv->has_alt_txcntl = (firmver >= 0x90000); /* All 9.x ? */
2209                 priv->has_ext_scan = (firmver >= 0x90000); /* All 9.x ? */
2210                 priv->has_wpa = (firmver >= 0x9002a);
2211                 /* Tested with Agere firmware :
2212                  *      1.16 ; 4.08 ; 4.52 ; 6.04 ; 6.16 ; 7.28 => Jean II
2213                  * Tested CableTron firmware : 4.32 => Anton */
2214                 break;
2215         case FIRMWARE_TYPE_SYMBOL:
2216                 /* Symbol , 3Com AirConnect, Intel, Ericsson WLAN */
2217                 /* Intel MAC : 00:02:B3:* */
2218                 /* 3Com MAC : 00:50:DA:* */
2219                 memset(tmp, 0, sizeof(tmp));
2220                 /* Get the Symbol firmware version */
2221                 err = hermes_read_ltv(hw, USER_BAP,
2222                                       HERMES_RID_SECONDARYVERSION_SYMBOL,
2223                                       SYMBOL_MAX_VER_LEN, NULL, &tmp);
2224                 if (err) {
2225                         printk(KERN_WARNING
2226                                "%s: Error %d reading Symbol firmware info. "
2227                                "Wildly guessing capabilities...\n",
2228                                dev->name, err);
2229                         firmver = 0;
2230                         tmp[0] = '\0';
2231                 } else {
2232                         /* The firmware revision is a string, the format is
2233                          * something like : "V2.20-01".
2234                          * Quick and dirty parsing... - Jean II
2235                          */
2236                         firmver = ((tmp[1] - '0') << 16)
2237                                 | ((tmp[3] - '0') << 12)
2238                                 | ((tmp[4] - '0') << 8)
2239                                 | ((tmp[6] - '0') << 4)
2240                                 | (tmp[7] - '0');
2241
2242                         tmp[SYMBOL_MAX_VER_LEN] = '\0';
2243                 }
2244
2245                 snprintf(priv->fw_name, sizeof(priv->fw_name) - 1,
2246                          "Symbol %s", tmp);
2247
2248                 priv->has_ibss = (firmver >= 0x20000);
2249                 priv->has_wep = (firmver >= 0x15012);
2250                 priv->has_big_wep = (firmver >= 0x20000);
2251                 priv->has_pm = (firmver >= 0x20000 && firmver < 0x22000) ||
2252                                (firmver >= 0x29000 && firmver < 0x30000) ||
2253                                firmver >= 0x31000;
2254                 priv->has_preamble = (firmver >= 0x20000);
2255                 priv->ibss_port = 4;
2256
2257                 /* Symbol firmware is found on various cards, but
2258                  * there has been no attempt to check firmware
2259                  * download on non-spectrum_cs based cards.
2260                  *
2261                  * Given that the Agere firmware download works
2262                  * differently, we should avoid doing a firmware
2263                  * download with the Symbol algorithm on non-spectrum
2264                  * cards.
2265                  *
2266                  * For now we can identify a spectrum_cs based card
2267                  * because it has a firmware reset function.
2268                  */
2269                 priv->do_fw_download = (priv->stop_fw != NULL);
2270
2271                 priv->broken_disableport = (firmver == 0x25013) ||
2272                                 (firmver >= 0x30000 && firmver <= 0x31000);
2273                 priv->has_hostscan = (firmver >= 0x31001) ||
2274                                      (firmver >= 0x29057 && firmver < 0x30000);
2275                 /* Tested with Intel firmware : 0x20015 => Jean II */
2276                 /* Tested with 3Com firmware : 0x15012 & 0x22001 => Jean II */
2277                 break;
2278         case FIRMWARE_TYPE_INTERSIL:
2279                 /* D-Link, Linksys, Adtron, ZoomAir, and many others...
2280                  * Samsung, Compaq 100/200 and Proxim are slightly
2281                  * different and less well tested */
2282                 /* D-Link MAC : 00:40:05:* */
2283                 /* Addtron MAC : 00:90:D1:* */
2284                 snprintf(priv->fw_name, sizeof(priv->fw_name) - 1,
2285                          "Intersil %d.%d.%d", sta_id.major, sta_id.minor,
2286                          sta_id.variant);
2287
2288                 firmver = ((unsigned long)sta_id.major << 16) |
2289                         ((unsigned long)sta_id.minor << 8) | sta_id.variant;
2290
2291                 priv->has_ibss = (firmver >= 0x000700); /* FIXME */
2292                 priv->has_big_wep = priv->has_wep = (firmver >= 0x000800);
2293                 priv->has_pm = (firmver >= 0x000700);
2294                 priv->has_hostscan = (firmver >= 0x010301);
2295
2296                 if (firmver >= 0x000800)
2297                         priv->ibss_port = 0;
2298                 else {
2299                         printk(KERN_NOTICE "%s: Intersil firmware earlier "
2300                                "than v0.8.x - several features not supported\n",
2301                                dev->name);
2302                         priv->ibss_port = 1;
2303                 }
2304                 break;
2305         }
2306         printk(KERN_DEBUG "%s: Firmware determined as %s\n", dev->name,
2307                priv->fw_name);
2308
2309         return 0;
2310 }
2311
2312 static int orinoco_init(struct net_device *dev)
2313 {
2314         struct orinoco_private *priv = netdev_priv(dev);
2315         hermes_t *hw = &priv->hw;
2316         int err = 0;
2317         struct hermes_idstring nickbuf;
2318         u16 reclen;
2319         int len;
2320
2321         /* No need to lock, the hw_unavailable flag is already set in
2322          * alloc_orinocodev() */
2323         priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN;
2324
2325         /* Initialize the firmware */
2326         err = hermes_init(hw);
2327         if (err != 0) {
2328                 printk(KERN_ERR "%s: failed to initialize firmware (err = %d)\n",
2329                        dev->name, err);
2330                 goto out;
2331         }
2332
2333         err = determine_firmware(dev);
2334         if (err != 0) {
2335                 printk(KERN_ERR "%s: Incompatible firmware, aborting\n",
2336                        dev->name);
2337                 goto out;
2338         }
2339
2340         if (priv->do_fw_download) {
2341 #ifdef CONFIG_HERMES_CACHE_FW_ON_INIT
2342                 orinoco_cache_fw(priv, 0);
2343 #endif
2344
2345                 err = orinoco_download(priv);
2346                 if (err)
2347                         priv->do_fw_download = 0;
2348
2349                 /* Check firmware version again */
2350                 err = determine_firmware(dev);
2351                 if (err != 0) {
2352                         printk(KERN_ERR "%s: Incompatible firmware, aborting\n",
2353                                dev->name);
2354                         goto out;
2355                 }
2356         }
2357
2358         if (priv->has_port3)
2359                 printk(KERN_DEBUG "%s: Ad-hoc demo mode supported\n",
2360                        dev->name);
2361         if (priv->has_ibss)
2362                 printk(KERN_DEBUG "%s: IEEE standard IBSS ad-hoc mode supported\n",
2363                        dev->name);
2364         if (priv->has_wep) {
2365                 printk(KERN_DEBUG "%s: WEP supported, %s-bit key\n", dev->name,
2366                        priv->has_big_wep ? "104" : "40");
2367         }
2368         if (priv->has_wpa) {
2369                 printk(KERN_DEBUG "%s: WPA-PSK supported\n", dev->name);
2370                 if (orinoco_mic_init(priv)) {
2371                         printk(KERN_ERR "%s: Failed to setup MIC crypto "
2372                                "algorithm. Disabling WPA support\n", dev->name);
2373                         priv->has_wpa = 0;
2374                 }
2375         }
2376
2377         /* Now we have the firmware capabilities, allocate appropiate
2378          * sized scan buffers */
2379         if (orinoco_bss_data_allocate(priv))
2380                 goto out;
2381         orinoco_bss_data_init(priv);
2382
2383         /* Get the MAC address */
2384         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CNFOWNMACADDR,
2385                               ETH_ALEN, NULL, dev->dev_addr);
2386         if (err) {
2387                 printk(KERN_WARNING "%s: failed to read MAC address!\n",
2388                        dev->name);
2389                 goto out;
2390         }
2391
2392         printk(KERN_DEBUG "%s: MAC address %pM\n",
2393                dev->name, dev->dev_addr);
2394
2395         /* Get the station name */
2396         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CNFOWNNAME,
2397                               sizeof(nickbuf), &reclen, &nickbuf);
2398         if (err) {
2399                 printk(KERN_ERR "%s: failed to read station name\n",
2400                        dev->name);
2401                 goto out;
2402         }
2403         if (nickbuf.len)
2404                 len = min(IW_ESSID_MAX_SIZE, (int)le16_to_cpu(nickbuf.len));
2405         else
2406                 len = min(IW_ESSID_MAX_SIZE, 2 * reclen);
2407         memcpy(priv->nick, &nickbuf.val, len);
2408         priv->nick[len] = '\0';
2409
2410         printk(KERN_DEBUG "%s: Station name \"%s\"\n", dev->name, priv->nick);
2411
2412         err = orinoco_allocate_fid(dev);
2413         if (err) {
2414                 printk(KERN_ERR "%s: failed to allocate NIC buffer!\n",
2415                        dev->name);
2416                 goto out;
2417         }
2418
2419         /* Get allowed channels */
2420         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CHANNELLIST,
2421                                   &priv->channel_mask);
2422         if (err) {
2423                 printk(KERN_ERR "%s: failed to read channel list!\n",
2424                        dev->name);
2425                 goto out;
2426         }
2427
2428         /* Get initial AP density */
2429         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFSYSTEMSCALE,
2430                                   &priv->ap_density);
2431         if (err || priv->ap_density < 1 || priv->ap_density > 3)
2432                 priv->has_sensitivity = 0;
2433
2434         /* Get initial RTS threshold */
2435         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFRTSTHRESHOLD,
2436                                   &priv->rts_thresh);
2437         if (err) {
2438                 printk(KERN_ERR "%s: failed to read RTS threshold!\n",
2439                        dev->name);
2440                 goto out;
2441         }
2442
2443         /* Get initial fragmentation settings */
2444         if (priv->has_mwo)
2445                 err = hermes_read_wordrec(hw, USER_BAP,
2446                                           HERMES_RID_CNFMWOROBUST_AGERE,
2447                                           &priv->mwo_robust);
2448         else
2449                 err = hermes_read_wordrec(hw, USER_BAP,
2450                                           HERMES_RID_CNFFRAGMENTATIONTHRESHOLD,
2451                                           &priv->frag_thresh);
2452         if (err) {
2453                 printk(KERN_ERR "%s: failed to read fragmentation settings!\n",
2454                        dev->name);
2455                 goto out;
2456         }
2457
2458         /* Power management setup */
2459         if (priv->has_pm) {
2460                 priv->pm_on = 0;
2461                 priv->pm_mcast = 1;
2462                 err = hermes_read_wordrec(hw, USER_BAP,
2463                                           HERMES_RID_CNFMAXSLEEPDURATION,
2464                                           &priv->pm_period);
2465                 if (err) {
2466                         printk(KERN_ERR "%s: failed to read power management period!\n",
2467                                dev->name);
2468                         goto out;
2469                 }
2470                 err = hermes_read_wordrec(hw, USER_BAP,
2471                                           HERMES_RID_CNFPMHOLDOVERDURATION,
2472                                           &priv->pm_timeout);
2473                 if (err) {
2474                         printk(KERN_ERR "%s: failed to read power management timeout!\n",
2475                                dev->name);
2476                         goto out;
2477                 }
2478         }
2479
2480         /* Preamble setup */
2481         if (priv->has_preamble) {
2482                 err = hermes_read_wordrec(hw, USER_BAP,
2483                                           HERMES_RID_CNFPREAMBLE_SYMBOL,
2484                                           &priv->preamble);
2485                 if (err)
2486                         goto out;
2487         }
2488
2489         /* Set up the default configuration */
2490         priv->iw_mode = IW_MODE_INFRA;
2491         /* By default use IEEE/IBSS ad-hoc mode if we have it */
2492         priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss);
2493         set_port_type(priv);
2494         priv->channel = 0; /* use firmware default */
2495
2496         priv->promiscuous = 0;
2497         priv->encode_alg = IW_ENCODE_ALG_NONE;
2498         priv->tx_key = 0;
2499         priv->wpa_enabled = 0;
2500         priv->tkip_cm_active = 0;
2501         priv->key_mgmt = 0;
2502         priv->wpa_ie_len = 0;
2503         priv->wpa_ie = NULL;
2504
2505         /* Make the hardware available, as long as it hasn't been
2506          * removed elsewhere (e.g. by PCMCIA hot unplug) */
2507         spin_lock_irq(&priv->lock);
2508         priv->hw_unavailable--;
2509         spin_unlock_irq(&priv->lock);
2510
2511         printk(KERN_DEBUG "%s: ready\n", dev->name);
2512
2513  out:
2514         return err;
2515 }
2516
2517 static const struct net_device_ops orinoco_netdev_ops = {
2518         .ndo_init               = orinoco_init,
2519         .ndo_open               = orinoco_open,
2520         .ndo_stop               = orinoco_stop,
2521         .ndo_start_xmit         = orinoco_xmit,
2522         .ndo_set_multicast_list = orinoco_set_multicast_list,
2523         .ndo_change_mtu         = orinoco_change_mtu,
2524         .ndo_tx_timeout         = orinoco_tx_timeout,
2525         .ndo_get_stats          = orinoco_get_stats,
2526 };
2527
2528 struct net_device
2529 *alloc_orinocodev(int sizeof_card,
2530                   struct device *device,
2531                   int (*hard_reset)(struct orinoco_private *),
2532                   int (*stop_fw)(struct orinoco_private *, int))
2533 {
2534         struct net_device *dev;
2535         struct orinoco_private *priv;
2536
2537         dev = alloc_etherdev(sizeof(struct orinoco_private) + sizeof_card);
2538         if (!dev)
2539                 return NULL;
2540         priv = netdev_priv(dev);
2541         priv->ndev = dev;
2542         if (sizeof_card)
2543                 priv->card = (void *)((unsigned long)priv
2544                                       + sizeof(struct orinoco_private));
2545         else
2546                 priv->card = NULL;
2547         priv->dev = device;
2548
2549         /* Setup / override net_device fields */
2550         dev->netdev_ops = &orinoco_netdev_ops;
2551         dev->watchdog_timeo = HZ; /* 1 second timeout */
2552         dev->ethtool_ops = &orinoco_ethtool_ops;
2553         dev->wireless_handlers = &orinoco_handler_def;
2554 #ifdef WIRELESS_SPY
2555         priv->wireless_data.spy_data = &priv->spy_data;
2556         dev->wireless_data = &priv->wireless_data;
2557 #endif
2558         /* we use the default eth_mac_addr for setting the MAC addr */
2559
2560         /* Reserve space in skb for the SNAP header */
2561         dev->hard_header_len += ENCAPS_OVERHEAD;
2562
2563         /* Set up default callbacks */
2564         priv->hard_reset = hard_reset;
2565         priv->stop_fw = stop_fw;
2566
2567         spin_lock_init(&priv->lock);
2568         priv->open = 0;
2569         priv->hw_unavailable = 1; /* orinoco_init() must clear this
2570                                    * before anything else touches the
2571                                    * hardware */
2572         INIT_WORK(&priv->reset_work, orinoco_reset);
2573         INIT_WORK(&priv->join_work, orinoco_join_ap);
2574         INIT_WORK(&priv->wevent_work, orinoco_send_wevents);
2575
2576         INIT_LIST_HEAD(&priv->rx_list);
2577         tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet,
2578                      (unsigned long) dev);
2579
2580         netif_carrier_off(dev);
2581         priv->last_linkstatus = 0xffff;
2582
2583         priv->cached_pri_fw = NULL;
2584         priv->cached_fw = NULL;
2585
2586         /* Register PM notifiers */
2587         orinoco_register_pm_notifier(priv);
2588
2589         return dev;
2590 }
2591 EXPORT_SYMBOL(alloc_orinocodev);
2592
2593 void free_orinocodev(struct net_device *dev)
2594 {
2595         struct orinoco_private *priv = netdev_priv(dev);
2596         struct orinoco_rx_data *rx_data, *temp;
2597
2598         /* If the tasklet is scheduled when we call tasklet_kill it
2599          * will run one final time. However the tasklet will only
2600          * drain priv->rx_list if the hw is still available. */
2601         tasklet_kill(&priv->rx_tasklet);
2602
2603         /* Explicitly drain priv->rx_list */
2604         list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
2605                 list_del(&rx_data->list);
2606
2607                 dev_kfree_skb(rx_data->skb);
2608                 kfree(rx_data->desc);
2609                 kfree(rx_data);
2610         }
2611
2612         orinoco_unregister_pm_notifier(priv);
2613         orinoco_uncache_fw(priv);
2614
2615         priv->wpa_ie_len = 0;
2616         kfree(priv->wpa_ie);
2617         orinoco_mic_free(priv);
2618         orinoco_bss_data_free(priv);
2619         free_netdev(dev);
2620 }
2621 EXPORT_SYMBOL(free_orinocodev);
2622
2623 static void orinoco_get_drvinfo(struct net_device *dev,
2624                                 struct ethtool_drvinfo *info)
2625 {
2626         struct orinoco_private *priv = netdev_priv(dev);
2627
2628         strncpy(info->driver, DRIVER_NAME, sizeof(info->driver) - 1);
2629         strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1);
2630         strncpy(info->fw_version, priv->fw_name, sizeof(info->fw_version) - 1);
2631         if (dev->dev.parent)
2632                 strncpy(info->bus_info, dev_name(dev->dev.parent),
2633                         sizeof(info->bus_info) - 1);
2634         else
2635                 snprintf(info->bus_info, sizeof(info->bus_info) - 1,
2636                          "PCMCIA %p", priv->hw.iobase);
2637 }
2638
2639 static const struct ethtool_ops orinoco_ethtool_ops = {
2640         .get_drvinfo = orinoco_get_drvinfo,
2641         .get_link = ethtool_op_get_link,
2642 };
2643
2644 /********************************************************************/
2645 /* Module initialization                                            */
2646 /********************************************************************/
2647
2648 /* Can't be declared "const" or the whole __initdata section will
2649  * become const */
2650 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
2651         " (David Gibson <hermes@gibson.dropbear.id.au>, "
2652         "Pavel Roskin <proski@gnu.org>, et al)";
2653
2654 static int __init init_orinoco(void)
2655 {
2656         printk(KERN_DEBUG "%s\n", version);
2657         return 0;
2658 }
2659
2660 static void __exit exit_orinoco(void)
2661 {
2662 }
2663
2664 module_init(init_orinoco);
2665 module_exit(exit_orinoco);