SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/p54/p54common.c

   1
   2 /*
   3  * Common code for mac80211 Prism54 drivers
   4  *
   5  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   6  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   7  *
   8  * Based on the islsm (softmac prism54) driver, which is:
   9  * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/firmware.h>
  18 #include <linux/etherdevice.h>
  19
  20 #include <net/mac80211.h>
  21
  22 #include "p54.h"
  23 #include "p54common.h"
  24
  25 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  26 MODULE_DESCRIPTION("Softmac Prism54 common code");
  27 MODULE_LICENSE("GPL");
  28 MODULE_ALIAS("prism54common");
  29
  30 static struct ieee80211_rate p54_rates[] = {
  31         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  32         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  33         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  34         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  35         { .bitrate = 60, .hw_value = 4, },
  36         { .bitrate = 90, .hw_value = 5, },
  37         { .bitrate = 120, .hw_value = 6, },
  38         { .bitrate = 180, .hw_value = 7, },
  39         { .bitrate = 240, .hw_value = 8, },
  40         { .bitrate = 360, .hw_value = 9, },
  41         { .bitrate = 480, .hw_value = 10, },
  42         { .bitrate = 540, .hw_value = 11, },
  43 };
  44
  45 static struct ieee80211_channel p54_channels[] = {
  46         { .center_freq = 2412, .hw_value = 1, },
  47         { .center_freq = 2417, .hw_value = 2, },
  48         { .center_freq = 2422, .hw_value = 3, },
  49         { .center_freq = 2427, .hw_value = 4, },
  50         { .center_freq = 2432, .hw_value = 5, },
  51         { .center_freq = 2437, .hw_value = 6, },
  52         { .center_freq = 2442, .hw_value = 7, },
  53         { .center_freq = 2447, .hw_value = 8, },
  54         { .center_freq = 2452, .hw_value = 9, },
  55         { .center_freq = 2457, .hw_value = 10, },
  56         { .center_freq = 2462, .hw_value = 11, },
  57         { .center_freq = 2467, .hw_value = 12, },
  58         { .center_freq = 2472, .hw_value = 13, },
  59         { .center_freq = 2484, .hw_value = 14, },
  60 };
  61
  62 static struct ieee80211_supported_band band_2GHz = {
  63         .channels = p54_channels,
  64         .n_channels = ARRAY_SIZE(p54_channels),
  65         .bitrates = p54_rates,
  66         .n_bitrates = ARRAY_SIZE(p54_rates),
  67 };
  68
  69 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
  70 {
  71         struct p54_common *priv = dev->priv;
  72         struct bootrec_exp_if *exp_if;
  73         struct bootrec *bootrec;
  74         u32 *data = (u32 *)fw->data;
  75         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
  76         u8 *fw_version = NULL;
  77         size_t len;
  78         int i;
  79
  80         if (priv->rx_start)
  81                 return 0;
  82
  83         while (data < end_data && *data)
  84                 data++;
  85
  86         while (data < end_data && !*data)
  87                 data++;
  88
  89         bootrec = (struct bootrec *) data;
  90
  91         while (bootrec->data <= end_data &&
  92                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
  93                 u32 code = le32_to_cpu(bootrec->code);
  94                 switch (code) {
  95                 case BR_CODE_COMPONENT_ID:
  96                         priv->fw_interface = be32_to_cpup(bootrec->data);
  97                         switch (priv->fw_interface) {
  98                         case FW_FMAC:
  99                                 printk(KERN_INFO "p54: FreeMAC firmware\n");
 100                                 break;
 101                         case FW_LM20:
 102                                 printk(KERN_INFO "p54: LM20 firmware\n");
 103                                 break;
 104                         case FW_LM86:
 105                                 printk(KERN_INFO "p54: LM86 firmware\n");
 106                                 break;
 107                         case FW_LM87:
 108                                 printk(KERN_INFO "p54: LM87 firmware\n");
 109                                 break;
 110                         default:
 111                                 printk(KERN_INFO "p54: unknown firmware\n");
 112                                 break;
 113                         }
 114                         break;
 115                 case BR_CODE_COMPONENT_VERSION:
 116                         /* 24 bytes should be enough for all firmwares */
 117                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 118                                 fw_version = (unsigned char*)bootrec->data;
 119                         break;
 120                 case BR_CODE_DESCR: {
 121                         struct bootrec_desc *desc =
 122                                 (struct bootrec_desc *)bootrec->data;
 123                         priv->rx_start = le32_to_cpu(desc->rx_start);
 124                         /* FIXME add sanity checking */
 125                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 126                         priv->headroom = desc->headroom;
 127                         priv->tailroom = desc->tailroom;
 128                         if (bootrec->len == 11)
 129                                 priv->rx_mtu = (size_t) le16_to_cpu(
 130                                         (__le16)bootrec->data[10]);
 131                         else
 132                                 priv->rx_mtu = (size_t)
 133                                         0x620 - priv->tx_hdr_len;
 134                         break;
 135                         }
 136                 case BR_CODE_EXPOSED_IF:
 137                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 138                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 139                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 140                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 141                         break;
 142                 case BR_CODE_DEPENDENT_IF:
 143                         break;
 144                 case BR_CODE_END_OF_BRA:
 145                 case LEGACY_BR_CODE_END_OF_BRA:
 146                         end_data = NULL;
 147                         break;
 148                 default:
 149                         break;
 150                 }
 151                 bootrec = (struct bootrec *)&bootrec->data[len];
 152         }
 153
 154         if (fw_version)
 155                 printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
 156                         fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
 157
 158         if (priv->fw_var >= 0x300) {
 159                 /* Firmware supports QoS, use it! */
 160                 priv->tx_stats[4].limit = 3;
 161                 priv->tx_stats[5].limit = 4;
 162                 priv->tx_stats[6].limit = 3;
 163                 priv->tx_stats[7].limit = 1;
 164                 dev->queues = 4;
 165         }
 166
 167         return 0;
 168 }
 169 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 170
 171 static int p54_convert_rev0(struct ieee80211_hw *dev,
 172                             struct pda_pa_curve_data *curve_data)
 173 {
 174         struct p54_common *priv = dev->priv;
 175         struct p54_pa_curve_data_sample *dst;
 176         struct pda_pa_curve_data_sample_rev0 *src;
 177         size_t cd_len = sizeof(*curve_data) +
 178                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 179                  curve_data->channels;
 180         unsigned int i, j;
 181         void *source, *target;
 182
 183         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 184         if (!priv->curve_data)
 185                 return -ENOMEM;
 186
 187         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 188         source = curve_data->data;
 189         target = priv->curve_data->data;
 190         for (i = 0; i < curve_data->channels; i++) {
 191                 __le16 *freq = source;
 192                 source += sizeof(__le16);
 193                 *((__le16 *)target) = *freq;
 194                 target += sizeof(__le16);
 195                 for (j = 0; j < curve_data->points_per_channel; j++) {
 196                         dst = target;
 197                         src = source;
 198
 199                         dst->rf_power = src->rf_power;
 200                         dst->pa_detector = src->pa_detector;
 201                         dst->data_64qam = src->pcv;
 202                         /* "invent" the points for the other modulations */
 203 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 204                         dst->data_16qam = SUB(src->pcv, 12);
 205                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 206                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 207                         dst->data_barker = SUB(dst->data_bpsk, 14);
 208 #undef SUB
 209                         target += sizeof(*dst);
 210                         source += sizeof(*src);
 211                 }
 212         }
 213
 214         return 0;
 215 }
 216
 217 static int p54_convert_rev1(struct ieee80211_hw *dev,
 218                             struct pda_pa_curve_data *curve_data)
 219 {
 220         struct p54_common *priv = dev->priv;
 221         struct p54_pa_curve_data_sample *dst;
 222         struct pda_pa_curve_data_sample_rev1 *src;
 223         size_t cd_len = sizeof(*curve_data) +
 224                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 225                  curve_data->channels;
 226         unsigned int i, j;
 227         void *source, *target;
 228
 229         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 230         if (!priv->curve_data)
 231                 return -ENOMEM;
 232
 233         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 234         source = curve_data->data;
 235         target = priv->curve_data->data;
 236         for (i = 0; i < curve_data->channels; i++) {
 237                 __le16 *freq = source;
 238                 source += sizeof(__le16);
 239                 *((__le16 *)target) = *freq;
 240                 target += sizeof(__le16);
 241                 for (j = 0; j < curve_data->points_per_channel; j++) {
 242                         memcpy(target, source, sizeof(*src));
 243
 244                         target += sizeof(*dst);
 245                         source += sizeof(*src);
 246                 }
 247                 source++;
 248         }
 249
 250         return 0;
 251 }
 252
 253 const char* p54_rf_chips[] = { "NULL", "Indigo?", "Duette",
 254                               "Frisbee", "Xbow", "Longbow" };
 255
 256 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 257 {
 258         struct p54_common *priv = dev->priv;
 259         struct eeprom_pda_wrap *wrap = NULL;
 260         struct pda_entry *entry;
 261         unsigned int data_len, entry_len;
 262         void *tmp;
 263         int err;
 264         u8 *end = (u8 *)eeprom + len;
 265         DECLARE_MAC_BUF(mac);
 266
 267         wrap = (struct eeprom_pda_wrap *) eeprom;
 268         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 269
 270         /* verify that at least the entry length/code fits */
 271         while ((u8 *)entry <= end - sizeof(*entry)) {
 272                 entry_len = le16_to_cpu(entry->len);
 273                 data_len = ((entry_len - 1) << 1);
 274
 275                 /* abort if entry exceeds whole structure */
 276                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 277                         break;
 278
 279                 switch (le16_to_cpu(entry->code)) {
 280                 case PDR_MAC_ADDRESS:
 281                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 282                         break;
 283                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 284                         if (data_len < 2) {
 285                                 err = -EINVAL;
 286                                 goto err;
 287                         }
 288
 289                         if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
 290                                 err = -EINVAL;
 291                                 goto err;
 292                         }
 293
 294                         priv->output_limit = kmalloc(entry->data[1] *
 295                                 sizeof(*priv->output_limit), GFP_KERNEL);
 296
 297                         if (!priv->output_limit) {
 298                                 err = -ENOMEM;
 299                                 goto err;
 300                         }
 301
 302                         memcpy(priv->output_limit, &entry->data[2],
 303                                entry->data[1]*sizeof(*priv->output_limit));
 304                         priv->output_limit_len = entry->data[1];
 305                         break;
 306                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 307                         struct pda_pa_curve_data *curve_data =
 308                                 (struct pda_pa_curve_data *)entry->data;
 309                         if (data_len < sizeof(*curve_data)) {
 310                                 err = -EINVAL;
 311                                 goto err;
 312                         }
 313
 314                         switch (curve_data->cal_method_rev) {
 315                         case 0:
 316                                 err = p54_convert_rev0(dev, curve_data);
 317                                 break;
 318                         case 1:
 319                                 err = p54_convert_rev1(dev, curve_data);
 320                                 break;
 321                         default:
 322                                 printk(KERN_ERR "p54: unknown curve data "
 323                                                 "revision %d\n",
 324                                                 curve_data->cal_method_rev);
 325                                 err = -ENODEV;
 326                                 break;
 327                         }
 328                         if (err)
 329                                 goto err;
 330
 331                 }
 332                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 333                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 334                         if (!priv->iq_autocal) {
 335                                 err = -ENOMEM;
 336                                 goto err;
 337                         }
 338
 339                         memcpy(priv->iq_autocal, entry->data, data_len);
 340                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 341                         break;
 342                 case PDR_INTERFACE_LIST:
 343                         tmp = entry->data;
 344                         while ((u8 *)tmp < entry->data + data_len) {
 345                                 struct bootrec_exp_if *exp_if = tmp;
 346                                 if (le16_to_cpu(exp_if->if_id) == 0xF)
 347                                         priv->rxhw = le16_to_cpu(exp_if->variant) & 0x07;
 348                                 tmp += sizeof(struct bootrec_exp_if);
 349                         }
 350                         break;
 351                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 352                         priv->version = *(u8 *)(entry->data + 1);
 353                         break;
 354                 case PDR_END:
 355                         /* make it overrun */
 356                         entry_len = len;
 357                         break;
 358                 default:
 359                         printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
 360                                 le16_to_cpu(entry->code));
 361                         break;
 362                 }
 363
 364                 entry = (void *)entry + (entry_len + 1)*2;
 365         }
 366
 367         if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
 368                 printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
 369                 err = -EINVAL;
 370                 goto err;
 371         }
 372
 373         switch (priv->rxhw) {
 374                 case 4: /* XBow */
 375                 case 1: /* Indigo? */
 376                 case 2: /* Duette */
 377                         /* TODO: 5GHz initialization goes here */
 378
 379                 case 3: /* Frisbee */
 380                 case 5: /* Longbow */
 381                         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 382                         break;
 383                 default:
 384                         printk(KERN_ERR "%s: unsupported RF-Chip\n",
 385                                 wiphy_name(dev->wiphy));
 386                         err = -EINVAL;
 387                         goto err;
 388         }
 389
 390         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 391                 u8 perm_addr[ETH_ALEN];
 392
 393                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 394                         wiphy_name(dev->wiphy));
 395                 random_ether_addr(perm_addr);
 396                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 397         }
 398
 399         printk(KERN_INFO "%s: hwaddr %s, MAC:isl38%02x RF:%s\n",
 400                 wiphy_name(dev->wiphy),
 401                 print_mac(mac, dev->wiphy->perm_addr),
 402                 priv->version, p54_rf_chips[priv->rxhw]);
 403
 404         return 0;
 405
 406   err:
 407         if (priv->iq_autocal) {
 408                 kfree(priv->iq_autocal);
 409                 priv->iq_autocal = NULL;
 410         }
 411
 412         if (priv->output_limit) {
 413                 kfree(priv->output_limit);
 414                 priv->output_limit = NULL;
 415         }
 416
 417         if (priv->curve_data) {
 418                 kfree(priv->curve_data);
 419                 priv->curve_data = NULL;
 420         }
 421
 422         printk(KERN_ERR "p54: eeprom parse failed!\n");
 423         return err;
 424 }
 425 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 426
 427 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 428 {
 429         /* TODO: get the rssi_add & rssi_mul data from the eeprom */
 430         return ((rssi * 0x83) / 64 - 400) / 4;
 431 }
 432
 433 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 434 {
 435         struct p54_common *priv = dev->priv;
 436         struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
 437         struct ieee80211_rx_status rx_status = {0};
 438         u16 freq = le16_to_cpu(hdr->freq);
 439         size_t header_len = sizeof(*hdr);
 440         u32 tsf32;
 441
 442         if (!(hdr->magic & cpu_to_le16(0x0001))) {
 443                 if (priv->filter_flags & FIF_FCSFAIL)
 444                         rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 445                 else
 446                         return 0;
 447         }
 448
 449         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 450         rx_status.noise = priv->noise;
 451         /* XX correct? */
 452         rx_status.qual = (100 * hdr->rssi) / 127;
 453         rx_status.rate_idx = hdr->rate & 0xf;
 454         rx_status.freq = freq;
 455         rx_status.band = IEEE80211_BAND_2GHZ;
 456         rx_status.antenna = hdr->antenna;
 457
 458         tsf32 = le32_to_cpu(hdr->tsf32);
 459         if (tsf32 < priv->tsf_low32)
 460                 priv->tsf_high32++;
 461         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 462         priv->tsf_low32 = tsf32;
 463
 464         rx_status.flag |= RX_FLAG_TSFT;
 465
 466         if (hdr->magic & cpu_to_le16(0x4000))
 467                 header_len += hdr->align[0];
 468
 469         skb_pull(skb, header_len);
 470         skb_trim(skb, le16_to_cpu(hdr->len));
 471
 472         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 473
 474         return -1;
 475 }
 476
 477 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 478 {
 479         struct p54_common *priv = dev->priv;
 480         int i;
 481
 482         for (i = 0; i < dev->queues; i++)
 483                 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
 484                         ieee80211_wake_queue(dev, i);
 485 }
 486
 487 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 488 {
 489         struct p54_common *priv = dev->priv;
 490         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 491         struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
 492         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
 493         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 494         struct memrecord *range = NULL;
 495         u32 freed = 0;
 496         u32 last_addr = priv->rx_start;
 497         unsigned long flags;
 498
 499         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 500         while (entry != (struct sk_buff *)&priv->tx_queue) {
 501                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 502                 range = (void *)info->driver_data;
 503                 if (range->start_addr == addr) {
 504                         struct p54_control_hdr *entry_hdr;
 505                         struct p54_tx_control_allocdata *entry_data;
 506                         int pad = 0;
 507
 508                         if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 509                                 struct ieee80211_tx_info *ni;
 510                                 struct memrecord *mr;
 511
 512                                 ni = IEEE80211_SKB_CB(entry->next);
 513                                 mr = (struct memrecord *)ni->driver_data;
 514                                 freed = mr->start_addr - last_addr;
 515                         } else
 516                                 freed = priv->rx_end - last_addr;
 517
 518                         last_addr = range->end_addr;
 519                         __skb_unlink(entry, &priv->tx_queue);
 520                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 521
 522                         memset(&info->status, 0, sizeof(info->status));
 523                         entry_hdr = (struct p54_control_hdr *) entry->data;
 524                         entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
 525                         if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
 526                                 pad = entry_data->align[0];
 527
 528                         priv->tx_stats[entry_data->hw_queue].len--;
 529                         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 530                                 if (!(payload->status & 0x01))
 531                                         info->flags |= IEEE80211_TX_STAT_ACK;
 532                                 else
 533                                         info->status.excessive_retries = 1;
 534                         }
 535                         info->status.retry_count = payload->retries - 1;
 536                         info->status.ack_signal = p54_rssi_to_dbm(dev,
 537                                         le16_to_cpu(payload->ack_rssi));
 538                         skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 539                         ieee80211_tx_status_irqsafe(dev, entry);
 540                         goto out;
 541                 } else
 542                         last_addr = range->end_addr;
 543                 entry = entry->next;
 544         }
 545         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 546
 547 out:
 548         if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
 549             sizeof(struct p54_control_hdr))
 550                 p54_wake_free_queues(dev);
 551 }
 552
 553 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
 554                                    struct sk_buff *skb)
 555 {
 556         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 557         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
 558         struct p54_common *priv = dev->priv;
 559
 560         if (!priv->eeprom)
 561                 return ;
 562
 563         memcpy(priv->eeprom, eeprom->data, eeprom->len);
 564
 565         complete(&priv->eeprom_comp);
 566 }
 567
 568 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
 569 {
 570         struct p54_common *priv = dev->priv;
 571         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 572         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
 573         u32 tsf32 = le32_to_cpu(stats->tsf32);
 574
 575         if (tsf32 < priv->tsf_low32)
 576                 priv->tsf_high32++;
 577         priv->tsf_low32 = tsf32;
 578
 579         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
 580         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
 581         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
 582
 583         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
 584         complete(&priv->stats_comp);
 585
 586         mod_timer(&priv->stats_timer, jiffies + 5 * HZ);
 587 }
 588
 589 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
 590 {
 591         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 592
 593         switch (le16_to_cpu(hdr->type)) {
 594         case P54_CONTROL_TYPE_TXDONE:
 595                 p54_rx_frame_sent(dev, skb);
 596                 break;
 597         case P54_CONTROL_TYPE_BBP:
 598                 break;
 599         case P54_CONTROL_TYPE_STAT_READBACK:
 600                 p54_rx_stats(dev, skb);
 601                 break;
 602         case P54_CONTROL_TYPE_EEPROM_READBACK:
 603                 p54_rx_eeprom_readback(dev, skb);
 604                 break;
 605         default:
 606                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
 607                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
 608                 break;
 609         }
 610
 611         return 0;
 612 }
 613
 614 /* returns zero if skb can be reused */
 615 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
 616 {
 617         u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
 618
 619         if (type == 0x80)
 620                 return p54_rx_control(dev, skb);
 621         else
 622                 return p54_rx_data(dev, skb);
 623 }
 624 EXPORT_SYMBOL_GPL(p54_rx);
 625
 626 /*
 627  * So, the firmware is somewhat stupid and doesn't know what places in its
 628  * memory incoming data should go to. By poking around in the firmware, we
 629  * can find some unused memory to upload our packets to. However, data that we
 630  * want the card to TX needs to stay intact until the card has told us that
 631  * it is done with it. This function finds empty places we can upload to and
 632  * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
 633  * allocated areas.
 634  */
 635 static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
 636                                struct p54_control_hdr *data, u32 len)
 637 {
 638         struct p54_common *priv = dev->priv;
 639         struct sk_buff *entry = priv->tx_queue.next;
 640         struct sk_buff *target_skb = NULL;
 641         u32 last_addr = priv->rx_start;
 642         u32 largest_hole = 0;
 643         u32 target_addr = priv->rx_start;
 644         unsigned long flags;
 645         unsigned int left;
 646         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
 647
 648         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 649         left = skb_queue_len(&priv->tx_queue);
 650         while (left--) {
 651                 u32 hole_size;
 652                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 653                 struct memrecord *range = (void *)info->driver_data;
 654                 hole_size = range->start_addr - last_addr;
 655                 if (!target_skb && hole_size >= len) {
 656                         target_skb = entry->prev;
 657                         hole_size -= len;
 658                         target_addr = last_addr;
 659                 }
 660                 largest_hole = max(largest_hole, hole_size);
 661                 last_addr = range->end_addr;
 662                 entry = entry->next;
 663         }
 664         if (!target_skb && priv->rx_end - last_addr >= len) {
 665                 target_skb = priv->tx_queue.prev;
 666                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
 667                 if (!skb_queue_empty(&priv->tx_queue)) {
 668                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
 669                         struct memrecord *range = (void *)info->driver_data;
 670                         target_addr = range->end_addr;
 671                 }
 672         } else
 673                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
 674
 675         if (skb) {
 676                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 677                 struct memrecord *range = (void *)info->driver_data;
 678                 range->start_addr = target_addr;
 679                 range->end_addr = target_addr + len;
 680                 __skb_queue_after(&priv->tx_queue, target_skb, skb);
 681                 if (largest_hole < priv->rx_mtu + priv->headroom +
 682                                    priv->tailroom +
 683                                    sizeof(struct p54_control_hdr))
 684                         ieee80211_stop_queues(dev);
 685         }
 686         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 687
 688         data->req_id = cpu_to_le32(target_addr + priv->headroom);
 689 }
 690
 691 int p54_read_eeprom(struct ieee80211_hw *dev)
 692 {
 693         struct p54_common *priv = dev->priv;
 694         struct p54_control_hdr *hdr = NULL;
 695         struct p54_eeprom_lm86 *eeprom_hdr;
 696         size_t eeprom_size = 0x2020, offset = 0, blocksize;
 697         int ret = -ENOMEM;
 698         void *eeprom = NULL;
 699
 700         hdr = (struct p54_control_hdr *)kzalloc(sizeof(*hdr) +
 701                 sizeof(*eeprom_hdr) + EEPROM_READBACK_LEN, GFP_KERNEL);
 702         if (!hdr)
 703                 goto free;
 704
 705         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
 706         if (!priv->eeprom)
 707                 goto free;
 708
 709         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
 710         if (!eeprom)
 711                 goto free;
 712
 713         hdr->magic1 = cpu_to_le16(0x8000);
 714         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
 715         hdr->retry1 = hdr->retry2 = 0;
 716         eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
 717
 718         while (eeprom_size) {
 719                 blocksize = min(eeprom_size, (size_t)EEPROM_READBACK_LEN);
 720                 hdr->len = cpu_to_le16(blocksize + sizeof(*eeprom_hdr));
 721                 eeprom_hdr->offset = cpu_to_le16(offset);
 722                 eeprom_hdr->len = cpu_to_le16(blocksize);
 723                 p54_assign_address(dev, NULL, hdr, hdr->len + sizeof(*hdr));
 724                 priv->tx(dev, hdr, hdr->len + sizeof(*hdr), 0);
 725
 726                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
 727                         printk(KERN_ERR "%s: device does not respond!\n",
 728                                 wiphy_name(dev->wiphy));
 729                         ret = -EBUSY;
 730                         goto free;
 731                 }
 732
 733                 memcpy(eeprom + offset, priv->eeprom, blocksize);
 734                 offset += blocksize;
 735                 eeprom_size -= blocksize;
 736         }
 737
 738         ret = p54_parse_eeprom(dev, eeprom, offset);
 739 free:
 740         kfree(priv->eeprom);
 741         priv->eeprom = NULL;
 742         kfree(hdr);
 743         kfree(eeprom);
 744
 745         return ret;
 746 }
 747 EXPORT_SYMBOL_GPL(p54_read_eeprom);
 748
 749 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 750 {
 751         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 752         struct ieee80211_tx_queue_stats *current_queue;
 753         struct p54_common *priv = dev->priv;
 754         struct p54_control_hdr *hdr;
 755         struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 756         struct p54_tx_control_allocdata *txhdr;
 757         size_t padding, len;
 758         u8 rate;
 759         u8 cts_rate = 0x20;
 760
 761         current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
 762         if (unlikely(current_queue->len > current_queue->limit))
 763                 return NETDEV_TX_BUSY;
 764         current_queue->len++;
 765         current_queue->count++;
 766         if (current_queue->len == current_queue->limit)
 767                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
 768
 769         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
 770         len = skb->len;
 771
 772         txhdr = (struct p54_tx_control_allocdata *)
 773                         skb_push(skb, sizeof(*txhdr) + padding);
 774         hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
 775
 776         if (padding)
 777                 hdr->magic1 = cpu_to_le16(0x4010);
 778         else
 779                 hdr->magic1 = cpu_to_le16(0x0010);
 780         hdr->len = cpu_to_le16(len);
 781         hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
 782         hdr->retry1 = hdr->retry2 = info->control.retry_limit;
 783
 784         /* TODO: add support for alternate retry TX rates */
 785         rate = ieee80211_get_tx_rate(dev, info)->hw_value;
 786         if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
 787                 rate |= 0x10;
 788                 cts_rate |= 0x10;
 789         }
 790         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
 791                 rate |= 0x40;
 792                 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
 793         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
 794                 rate |= 0x20;
 795                 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
 796         }
 797         memset(txhdr->rateset, rate, 8);
 798         txhdr->key_type = 0;
 799         txhdr->key_len = 0;
 800         txhdr->hw_queue = skb_get_queue_mapping(skb) + 4;
 801         txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
 802                 2 : info->antenna_sel_tx - 1;
 803         txhdr->output_power = 0x7f; // HW Maximum
 804         txhdr->cts_rate = (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
 805                           0 : cts_rate;
 806         if (padding)
 807                 txhdr->align[0] = padding;
 808
 809         /* FIXME: The sequence that follows is needed for this driver to
 810          * work with mac80211 since "mac80211: fix TX sequence numbers".
 811          * As with the temporary code in rt2x00, changes will be needed
 812          * to get proper sequence numbers on beacons. In addition, this
 813          * patch places the sequence number in the hardware state, which
 814          * limits us to a single virtual state.
 815          */
 816         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
 817                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
 818                         priv->seqno += 0x10;
 819                 ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 820                 ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
 821         }
 822         /* modifies skb->cb and with it info, so must be last! */
 823         p54_assign_address(dev, skb, hdr, skb->len);
 824
 825         priv->tx(dev, hdr, skb->len, 0);
 826         return 0;
 827 }
 828
 829 static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
 830                           const u8 *bssid)
 831 {
 832         struct p54_common *priv = dev->priv;
 833         struct p54_control_hdr *hdr;
 834         struct p54_tx_control_filter *filter;
 835         size_t data_len;
 836
 837         hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
 838                       priv->tx_hdr_len, GFP_ATOMIC);
 839         if (!hdr)
 840                 return -ENOMEM;
 841
 842         hdr = (void *)hdr + priv->tx_hdr_len;
 843
 844         filter = (struct p54_tx_control_filter *) hdr->data;
 845         hdr->magic1 = cpu_to_le16(0x8001);
 846         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
 847
 848         priv->filter_type = filter->filter_type = cpu_to_le16(filter_type);
 849         memcpy(filter->mac_addr, priv->mac_addr, ETH_ALEN);
 850         if (!bssid)
 851                 memset(filter->bssid, ~0, ETH_ALEN);
 852         else
 853                 memcpy(filter->bssid, bssid, ETH_ALEN);
 854
 855         filter->rx_antenna = priv->rx_antenna;
 856
 857         if (priv->fw_var < 0x500) {
 858                 data_len = P54_TX_CONTROL_FILTER_V1_LEN;
 859                 filter->v1.basic_rate_mask = cpu_to_le32(0x15F);
 860                 filter->v1.rx_addr = cpu_to_le32(priv->rx_end);
 861                 filter->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 862                 filter->v1.rxhw = cpu_to_le16(priv->rxhw);
 863                 filter->v1.wakeup_timer = cpu_to_le16(500);
 864         } else {
 865                 data_len = P54_TX_CONTROL_FILTER_V2_LEN;
 866                 filter->v2.rx_addr = cpu_to_le32(priv->rx_end);
 867                 filter->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 868                 filter->v2.rxhw = cpu_to_le16(priv->rxhw);
 869                 filter->v2.timer = cpu_to_le16(1000);
 870         }
 871
 872         hdr->len = cpu_to_le16(data_len);
 873         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
 874         priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
 875         return 0;
 876 }
 877
 878 static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
 879 {
 880         struct p54_common *priv = dev->priv;
 881         struct p54_control_hdr *hdr;
 882         struct p54_tx_control_channel *chan;
 883         unsigned int i;
 884         size_t data_len;
 885         void *entry;
 886
 887         hdr = kzalloc(sizeof(*hdr) + sizeof(*chan) +
 888                       priv->tx_hdr_len, GFP_KERNEL);
 889         if (!hdr)
 890                 return -ENOMEM;
 891
 892         hdr = (void *)hdr + priv->tx_hdr_len;
 893
 894         chan = (struct p54_tx_control_channel *) hdr->data;
 895
 896         hdr->magic1 = cpu_to_le16(0x8001);
 897
 898         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
 899
 900         chan->flags = cpu_to_le16(0x1);
 901         chan->dwell = cpu_to_le16(0x0);
 902
 903         for (i = 0; i < priv->iq_autocal_len; i++) {
 904                 if (priv->iq_autocal[i].freq != freq)
 905                         continue;
 906
 907                 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
 908                        sizeof(*priv->iq_autocal));
 909                 break;
 910         }
 911         if (i == priv->iq_autocal_len)
 912                 goto err;
 913
 914         for (i = 0; i < priv->output_limit_len; i++) {
 915                 if (priv->output_limit[i].freq != freq)
 916                         continue;
 917
 918                 chan->val_barker = 0x38;
 919                 chan->val_bpsk = chan->dup_bpsk =
 920                         priv->output_limit[i].val_bpsk;
 921                 chan->val_qpsk = chan->dup_qpsk =
 922                         priv->output_limit[i].val_qpsk;
 923                 chan->val_16qam = chan->dup_16qam =
 924                         priv->output_limit[i].val_16qam;
 925                 chan->val_64qam = chan->dup_64qam =
 926                         priv->output_limit[i].val_64qam;
 927                 break;
 928         }
 929         if (i == priv->output_limit_len)
 930                 goto err;
 931
 932         entry = priv->curve_data->data;
 933         for (i = 0; i < priv->curve_data->channels; i++) {
 934                 if (*((__le16 *)entry) != freq) {
 935                         entry += sizeof(__le16);
 936                         entry += sizeof(struct p54_pa_curve_data_sample) *
 937                                  priv->curve_data->points_per_channel;
 938                         continue;
 939                 }
 940
 941                 entry += sizeof(__le16);
 942                 chan->pa_points_per_curve =
 943                         min(priv->curve_data->points_per_channel, (u8) 8);
 944
 945                 memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
 946                        chan->pa_points_per_curve);
 947                 break;
 948         }
 949
 950         if (priv->fw_var < 0x500) {
 951                 data_len = P54_TX_CONTROL_CHANNEL_V1_LEN;
 952                 chan->v1.rssical_mul = cpu_to_le16(130);
 953                 chan->v1.rssical_add = cpu_to_le16(0xfe70);
 954         } else {
 955                 data_len = P54_TX_CONTROL_CHANNEL_V2_LEN;
 956                 chan->v2.rssical_mul = cpu_to_le16(130);
 957                 chan->v2.rssical_add = cpu_to_le16(0xfe70);
 958                 chan->v2.basic_rate_mask = cpu_to_le32(0x15f);
 959         }
 960
 961         hdr->len = cpu_to_le16(data_len);
 962         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
 963         priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
 964         return 0;
 965
 966  err:
 967         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
 968         kfree(hdr);
 969         return -EINVAL;
 970 }
 971
 972 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
 973 {
 974         struct p54_common *priv = dev->priv;
 975         struct p54_control_hdr *hdr;
 976         struct p54_tx_control_led *led;
 977
 978         hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
 979                       priv->tx_hdr_len, GFP_KERNEL);
 980         if (!hdr)
 981                 return -ENOMEM;
 982
 983         hdr = (void *)hdr + priv->tx_hdr_len;
 984         hdr->magic1 = cpu_to_le16(0x8001);
 985         hdr->len = cpu_to_le16(sizeof(*led));
 986         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
 987         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led));
 988
 989         led = (struct p54_tx_control_led *) hdr->data;
 990         led->mode = cpu_to_le16(mode);
 991         led->led_permanent = cpu_to_le16(link);
 992         led->led_temporary = cpu_to_le16(act);
 993         led->duration = cpu_to_le16(1000);
 994
 995         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
 996
 997         return 0;
 998 }
 999
1000 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1001 do {                                                            \
1002         queue.aifs = cpu_to_le16(ai_fs);                        \
1003         queue.cwmin = cpu_to_le16(cw_min);                      \
1004         queue.cwmax = cpu_to_le16(cw_max);                      \
1005         queue.txop = cpu_to_le16(_txop);                        \
1006 } while(0)
1007
1008 static void p54_init_vdcf(struct ieee80211_hw *dev)
1009 {
1010         struct p54_common *priv = dev->priv;
1011         struct p54_control_hdr *hdr;
1012         struct p54_tx_control_vdcf *vdcf;
1013
1014         /* all USB V1 adapters need a extra headroom */
1015         hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1016         hdr->magic1 = cpu_to_le16(0x8001);
1017         hdr->len = cpu_to_le16(sizeof(*vdcf));
1018         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
1019         hdr->req_id = cpu_to_le32(priv->rx_start);
1020
1021         vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1022
1023         P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 47);
1024         P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
1025         P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
1026         P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
1027 }
1028
1029 static void p54_set_vdcf(struct ieee80211_hw *dev)
1030 {
1031         struct p54_common *priv = dev->priv;
1032         struct p54_control_hdr *hdr;
1033         struct p54_tx_control_vdcf *vdcf;
1034
1035         hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1036
1037         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf));
1038
1039         vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1040
1041         if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
1042                 vdcf->slottime = 9;
1043                 vdcf->magic1 = 0x10;
1044                 vdcf->magic2 = 0x00;
1045         } else {
1046                 vdcf->slottime = 20;
1047                 vdcf->magic1 = 0x0a;
1048                 vdcf->magic2 = 0x06;
1049         }
1050
1051         /* (see prism54/isl_oid.h for further details) */
1052         vdcf->frameburst = cpu_to_le16(0);
1053
1054         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
1055 }
1056
1057 static int p54_start(struct ieee80211_hw *dev)
1058 {
1059         struct p54_common *priv = dev->priv;
1060         int err;
1061
1062         if (!priv->cached_vdcf) {
1063                 priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf)+
1064                         priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1065                         GFP_KERNEL);
1066
1067                 if (!priv->cached_vdcf)
1068                         return -ENOMEM;
1069         }
1070
1071         if (!priv->cached_stats) {
1072                 priv->cached_stats = kzalloc(sizeof(struct p54_statistics) +
1073                         priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1074                         GFP_KERNEL);
1075
1076                 if (!priv->cached_stats) {
1077                         kfree(priv->cached_vdcf);
1078                         priv->cached_vdcf = NULL;
1079                         return -ENOMEM;
1080                 }
1081         }
1082
1083         err = priv->open(dev);
1084         if (!err)
1085                 priv->mode = IEEE80211_IF_TYPE_MNTR;
1086
1087         p54_init_vdcf(dev);
1088
1089         mod_timer(&priv->stats_timer, jiffies + HZ);
1090         return err;
1091 }
1092
1093 static void p54_stop(struct ieee80211_hw *dev)
1094 {
1095         struct p54_common *priv = dev->priv;
1096         struct sk_buff *skb;
1097
1098         del_timer(&priv->stats_timer);
1099         while ((skb = skb_dequeue(&priv->tx_queue)))
1100                 kfree_skb(skb);
1101         priv->stop(dev);
1102         priv->tsf_high32 = priv->tsf_low32 = 0;
1103         priv->mode = IEEE80211_IF_TYPE_INVALID;
1104 }
1105
1106 static int p54_add_interface(struct ieee80211_hw *dev,
1107                              struct ieee80211_if_init_conf *conf)
1108 {
1109         struct p54_common *priv = dev->priv;
1110
1111         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
1112                 return -EOPNOTSUPP;
1113
1114         switch (conf->type) {
1115         case IEEE80211_IF_TYPE_STA:
1116                 priv->mode = conf->type;
1117                 break;
1118         default:
1119                 return -EOPNOTSUPP;
1120         }
1121
1122         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1123
1124         p54_set_filter(dev, 0, NULL);
1125
1126         switch (conf->type) {
1127         case IEEE80211_IF_TYPE_STA:
1128                 p54_set_filter(dev, 1, NULL);
1129                 break;
1130         default:
1131                 BUG();  /* impossible */
1132                 break;
1133         }
1134
1135         p54_set_leds(dev, 1, 0, 0);
1136
1137         return 0;
1138 }
1139
1140 static void p54_remove_interface(struct ieee80211_hw *dev,
1141                                  struct ieee80211_if_init_conf *conf)
1142 {
1143         struct p54_common *priv = dev->priv;
1144         priv->mode = IEEE80211_IF_TYPE_MNTR;
1145         memset(priv->mac_addr, 0, ETH_ALEN);
1146         p54_set_filter(dev, 0, NULL);
1147 }
1148
1149 static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1150 {
1151         int ret;
1152         struct p54_common *priv = dev->priv;
1153
1154         mutex_lock(&priv->conf_mutex);
1155         priv->rx_antenna = (conf->antenna_sel_rx == 0) ?
1156                 2 : conf->antenna_sel_tx - 1;
1157         ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
1158         p54_set_vdcf(dev);
1159         mutex_unlock(&priv->conf_mutex);
1160         return ret;
1161 }
1162
1163 static int p54_config_interface(struct ieee80211_hw *dev,
1164                                 struct ieee80211_vif *vif,
1165                                 struct ieee80211_if_conf *conf)
1166 {
1167         struct p54_common *priv = dev->priv;
1168
1169         mutex_lock(&priv->conf_mutex);
1170         p54_set_filter(dev, 0, conf->bssid);
1171         p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
1172         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1173         mutex_unlock(&priv->conf_mutex);
1174         return 0;
1175 }
1176
1177 static void p54_configure_filter(struct ieee80211_hw *dev,
1178                                  unsigned int changed_flags,
1179                                  unsigned int *total_flags,
1180                                  int mc_count, struct dev_mc_list *mclist)
1181 {
1182         struct p54_common *priv = dev->priv;
1183
1184         *total_flags &= FIF_BCN_PRBRESP_PROMISC |
1185                         FIF_PROMISC_IN_BSS |
1186                         FIF_FCSFAIL;
1187
1188         priv->filter_flags = *total_flags;
1189
1190         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1191                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1192                         p54_set_filter(dev, priv->filter_type, NULL);
1193                 else
1194                         p54_set_filter(dev, priv->filter_type, priv->bssid);
1195         }
1196
1197         if (changed_flags & FIF_PROMISC_IN_BSS) {
1198                 if (*total_flags & FIF_PROMISC_IN_BSS)
1199                         p54_set_filter(dev, priv->filter_type |
1200                                 cpu_to_le16(0x8), NULL);
1201                 else
1202                         p54_set_filter(dev, priv->filter_type &
1203                                 ~cpu_to_le16(0x8), priv->bssid);
1204         }
1205 }
1206
1207 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1208                        const struct ieee80211_tx_queue_params *params)
1209 {
1210         struct p54_common *priv = dev->priv;
1211         struct p54_tx_control_vdcf *vdcf;
1212
1213         vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
1214                 ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
1215
1216         if ((params) && !(queue > 4)) {
1217                 P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
1218                         params->cw_min, params->cw_max, params->txop);
1219         } else
1220                 return -EINVAL;
1221
1222         p54_set_vdcf(dev);
1223
1224         return 0;
1225 }
1226
1227 static void p54_statistics_timer(unsigned long data)
1228 {
1229         struct ieee80211_hw *dev = (struct ieee80211_hw *) data;
1230         struct p54_common *priv = dev->priv;
1231         struct p54_control_hdr *hdr;
1232         struct p54_statistics *stats;
1233
1234         BUG_ON(!priv->cached_stats);
1235
1236         hdr = (void *)priv->cached_stats + priv->tx_hdr_len;
1237         hdr->magic1 = cpu_to_le16(0x8000);
1238         hdr->len = cpu_to_le16(sizeof(*stats));
1239         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_STAT_READBACK);
1240         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*stats));
1241
1242         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*stats), 0);
1243 }
1244
1245 static int p54_get_stats(struct ieee80211_hw *dev,
1246                          struct ieee80211_low_level_stats *stats)
1247 {
1248         struct p54_common *priv = dev->priv;
1249
1250         del_timer(&priv->stats_timer);
1251         p54_statistics_timer((unsigned long)dev);
1252
1253         if (!wait_for_completion_interruptible_timeout(&priv->stats_comp, HZ)) {
1254                 printk(KERN_ERR "%s: device does not respond!\n",
1255                         wiphy_name(dev->wiphy));
1256                 return -EBUSY;
1257         }
1258
1259         memcpy(stats, &priv->stats, sizeof(*stats));
1260
1261         return 0;
1262 }
1263
1264 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1265                             struct ieee80211_tx_queue_stats *stats)
1266 {
1267         struct p54_common *priv = dev->priv;
1268
1269         memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1270
1271         return 0;
1272 }
1273
1274 static const struct ieee80211_ops p54_ops = {
1275         .tx                     = p54_tx,
1276         .start                  = p54_start,
1277         .stop                   = p54_stop,
1278         .add_interface          = p54_add_interface,
1279         .remove_interface       = p54_remove_interface,
1280         .config                 = p54_config,
1281         .config_interface       = p54_config_interface,
1282         .configure_filter       = p54_configure_filter,
1283         .conf_tx                = p54_conf_tx,
1284         .get_stats              = p54_get_stats,
1285         .get_tx_stats           = p54_get_tx_stats
1286 };
1287
1288 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
1289 {
1290         struct ieee80211_hw *dev;
1291         struct p54_common *priv;
1292
1293         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
1294         if (!dev)
1295                 return NULL;
1296
1297         priv = dev->priv;
1298         priv->mode = IEEE80211_IF_TYPE_INVALID;
1299         skb_queue_head_init(&priv->tx_queue);
1300         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
1301                      IEEE80211_HW_RX_INCLUDES_FCS |
1302                      IEEE80211_HW_SIGNAL_DBM |
1303                      IEEE80211_HW_NOISE_DBM;
1304
1305         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1306
1307         dev->channel_change_time = 1000;        /* TODO: find actual value */
1308
1309         priv->tx_stats[0].limit = 1;
1310         priv->tx_stats[1].limit = 1;
1311         priv->tx_stats[2].limit = 1;
1312         priv->tx_stats[3].limit = 1;
1313         priv->tx_stats[4].limit = 5;
1314         dev->queues = 1;
1315         priv->noise = -94;
1316         dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
1317                                  sizeof(struct p54_tx_control_allocdata);
1318
1319         mutex_init(&priv->conf_mutex);
1320         init_completion(&priv->eeprom_comp);
1321         init_completion(&priv->stats_comp);
1322         setup_timer(&priv->stats_timer, p54_statistics_timer,
1323                 (unsigned long)dev);
1324
1325         return dev;
1326 }
1327 EXPORT_SYMBOL_GPL(p54_init_common);
1328
1329 void p54_free_common(struct ieee80211_hw *dev)
1330 {
1331         struct p54_common *priv = dev->priv;
1332         kfree(priv->cached_stats);
1333         kfree(priv->iq_autocal);
1334         kfree(priv->output_limit);
1335         kfree(priv->curve_data);
1336         kfree(priv->cached_vdcf);
1337 }
1338 EXPORT_SYMBOL_GPL(p54_free_common);
1339
1340 static int __init p54_init(void)
1341 {
1342         return 0;
1343 }
1344
1345 static void __exit p54_exit(void)
1346 {
1347 }
1348
1349 module_init(p54_init);
1350 module_exit(p54_exit);