drivers/net/wireless/p54/p54common.c

   1 /*
   2  * Common code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * Based on:
   9  * - the islsm (softmac prism54) driver, which is:
  10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  11  * - stlc45xx driver
  12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/firmware.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include <net/mac80211.h>
  24
  25 #include "p54.h"
  26 #include "p54common.h"
  27
  28 static int modparam_nohwcrypt;
  29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  32 MODULE_DESCRIPTION("Softmac Prism54 common code");
  33 MODULE_LICENSE("GPL");
  34 MODULE_ALIAS("prism54common");
  35
  36 static struct ieee80211_rate p54_bgrates[] = {
  37         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  38         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  39         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  40         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 60, .hw_value = 4, },
  42         { .bitrate = 90, .hw_value = 5, },
  43         { .bitrate = 120, .hw_value = 6, },
  44         { .bitrate = 180, .hw_value = 7, },
  45         { .bitrate = 240, .hw_value = 8, },
  46         { .bitrate = 360, .hw_value = 9, },
  47         { .bitrate = 480, .hw_value = 10, },
  48         { .bitrate = 540, .hw_value = 11, },
  49 };
  50
  51 static struct ieee80211_channel p54_bgchannels[] = {
  52         { .center_freq = 2412, .hw_value = 1, },
  53         { .center_freq = 2417, .hw_value = 2, },
  54         { .center_freq = 2422, .hw_value = 3, },
  55         { .center_freq = 2427, .hw_value = 4, },
  56         { .center_freq = 2432, .hw_value = 5, },
  57         { .center_freq = 2437, .hw_value = 6, },
  58         { .center_freq = 2442, .hw_value = 7, },
  59         { .center_freq = 2447, .hw_value = 8, },
  60         { .center_freq = 2452, .hw_value = 9, },
  61         { .center_freq = 2457, .hw_value = 10, },
  62         { .center_freq = 2462, .hw_value = 11, },
  63         { .center_freq = 2467, .hw_value = 12, },
  64         { .center_freq = 2472, .hw_value = 13, },
  65         { .center_freq = 2484, .hw_value = 14, },
  66 };
  67
  68 static struct ieee80211_supported_band band_2GHz = {
  69         .channels = p54_bgchannels,
  70         .n_channels = ARRAY_SIZE(p54_bgchannels),
  71         .bitrates = p54_bgrates,
  72         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  73 };
  74
  75 static struct ieee80211_rate p54_arates[] = {
  76         { .bitrate = 60, .hw_value = 4, },
  77         { .bitrate = 90, .hw_value = 5, },
  78         { .bitrate = 120, .hw_value = 6, },
  79         { .bitrate = 180, .hw_value = 7, },
  80         { .bitrate = 240, .hw_value = 8, },
  81         { .bitrate = 360, .hw_value = 9, },
  82         { .bitrate = 480, .hw_value = 10, },
  83         { .bitrate = 540, .hw_value = 11, },
  84 };
  85
  86 static struct ieee80211_channel p54_achannels[] = {
  87         { .center_freq = 4920 },
  88         { .center_freq = 4940 },
  89         { .center_freq = 4960 },
  90         { .center_freq = 4980 },
  91         { .center_freq = 5040 },
  92         { .center_freq = 5060 },
  93         { .center_freq = 5080 },
  94         { .center_freq = 5170 },
  95         { .center_freq = 5180 },
  96         { .center_freq = 5190 },
  97         { .center_freq = 5200 },
  98         { .center_freq = 5210 },
  99         { .center_freq = 5220 },
 100         { .center_freq = 5230 },
 101         { .center_freq = 5240 },
 102         { .center_freq = 5260 },
 103         { .center_freq = 5280 },
 104         { .center_freq = 5300 },
 105         { .center_freq = 5320 },
 106         { .center_freq = 5500 },
 107         { .center_freq = 5520 },
 108         { .center_freq = 5540 },
 109         { .center_freq = 5560 },
 110         { .center_freq = 5580 },
 111         { .center_freq = 5600 },
 112         { .center_freq = 5620 },
 113         { .center_freq = 5640 },
 114         { .center_freq = 5660 },
 115         { .center_freq = 5680 },
 116         { .center_freq = 5700 },
 117         { .center_freq = 5745 },
 118         { .center_freq = 5765 },
 119         { .center_freq = 5785 },
 120         { .center_freq = 5805 },
 121         { .center_freq = 5825 },
 122 };
 123
 124 static struct ieee80211_supported_band band_5GHz = {
 125         .channels = p54_achannels,
 126         .n_channels = ARRAY_SIZE(p54_achannels),
 127         .bitrates = p54_arates,
 128         .n_bitrates = ARRAY_SIZE(p54_arates),
 129 };
 130
 131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 132 {
 133         struct p54_common *priv = dev->priv;
 134         struct bootrec_exp_if *exp_if;
 135         struct bootrec *bootrec;
 136         u32 *data = (u32 *)fw->data;
 137         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 138         u8 *fw_version = NULL;
 139         size_t len;
 140         int i;
 141         int maxlen;
 142
 143         if (priv->rx_start)
 144                 return 0;
 145
 146         while (data < end_data && *data)
 147                 data++;
 148
 149         while (data < end_data && !*data)
 150                 data++;
 151
 152         bootrec = (struct bootrec *) data;
 153
 154         while (bootrec->data <= end_data &&
 155                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 156                 u32 code = le32_to_cpu(bootrec->code);
 157                 switch (code) {
 158                 case BR_CODE_COMPONENT_ID:
 159                         priv->fw_interface = be32_to_cpup((__be32 *)
 160                                              bootrec->data);
 161                         switch (priv->fw_interface) {
 162                         case FW_LM86:
 163                         case FW_LM20:
 164                         case FW_LM87: {
 165                                 char *iftype = (char *)bootrec->data;
 166                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 167                                                  "firmware\n",
 168                                         wiphy_name(dev->wiphy),
 169                                         iftype[2], iftype[3]);
 170                                 break;
 171                                 }
 172                         case FW_FMAC:
 173                         default:
 174                                 printk(KERN_ERR "%s: unsupported firmware\n",
 175                                         wiphy_name(dev->wiphy));
 176                                 return -ENODEV;
 177                         }
 178                         break;
 179                 case BR_CODE_COMPONENT_VERSION:
 180                         /* 24 bytes should be enough for all firmwares */
 181                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 182                                 fw_version = (unsigned char*)bootrec->data;
 183                         break;
 184                 case BR_CODE_DESCR: {
 185                         struct bootrec_desc *desc =
 186                                 (struct bootrec_desc *)bootrec->data;
 187                         priv->rx_start = le32_to_cpu(desc->rx_start);
 188                         /* FIXME add sanity checking */
 189                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 190                         priv->headroom = desc->headroom;
 191                         priv->tailroom = desc->tailroom;
 192                         priv->privacy_caps = desc->privacy_caps;
 193                         priv->rx_keycache_size = desc->rx_keycache_size;
 194                         if (le32_to_cpu(bootrec->len) == 11)
 195                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 196                         else
 197                                 priv->rx_mtu = (size_t)
 198                                         0x620 - priv->tx_hdr_len;
 199                         maxlen = priv->tx_hdr_len + /* USB devices */
 200                                  sizeof(struct p54_rx_data) +
 201                                  4 + /* rx alignment */
 202                                  IEEE80211_MAX_FRAG_THRESHOLD;
 203                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 204                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 205                                                  "to %d\n", priv->rx_mtu,
 206                                                  maxlen);
 207                                 priv->rx_mtu = maxlen;
 208                         }
 209                         break;
 210                         }
 211                 case BR_CODE_EXPOSED_IF:
 212                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 213                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 214                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 215                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 216                         break;
 217                 case BR_CODE_DEPENDENT_IF:
 218                         break;
 219                 case BR_CODE_END_OF_BRA:
 220                 case LEGACY_BR_CODE_END_OF_BRA:
 221                         end_data = NULL;
 222                         break;
 223                 default:
 224                         break;
 225                 }
 226                 bootrec = (struct bootrec *)&bootrec->data[len];
 227         }
 228
 229         if (fw_version)
 230                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 231                         wiphy_name(dev->wiphy), fw_version,
 232                         priv->fw_var >> 8, priv->fw_var & 0xff);
 233
 234         if (priv->fw_var < 0x500)
 235                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 236                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 237                        "and grab one for \"kernel >= 2.6.28\"!\n",
 238                         wiphy_name(dev->wiphy));
 239
 240         if (priv->fw_var >= 0x300) {
 241                 /* Firmware supports QoS, use it! */
 242                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 243                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 244                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 245                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 246                 dev->queues = P54_QUEUE_AC_NUM;
 247         }
 248
 249         if (!modparam_nohwcrypt)
 250                 printk(KERN_INFO "%s: cryptographic accelerator "
 251                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 252                         wiphy_name(dev->wiphy),
 253                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 254                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 255                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 257                         "YES" : "no");
 258
 259         return 0;
 260 }
 261 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 262
 263 static int p54_convert_rev0(struct ieee80211_hw *dev,
 264                             struct pda_pa_curve_data *curve_data)
 265 {
 266         struct p54_common *priv = dev->priv;
 267         struct p54_pa_curve_data_sample *dst;
 268         struct pda_pa_curve_data_sample_rev0 *src;
 269         size_t cd_len = sizeof(*curve_data) +
 270                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 271                  curve_data->channels;
 272         unsigned int i, j;
 273         void *source, *target;
 274
 275         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 276         if (!priv->curve_data)
 277                 return -ENOMEM;
 278
 279         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 280         source = curve_data->data;
 281         target = priv->curve_data->data;
 282         for (i = 0; i < curve_data->channels; i++) {
 283                 __le16 *freq = source;
 284                 source += sizeof(__le16);
 285                 *((__le16 *)target) = *freq;
 286                 target += sizeof(__le16);
 287                 for (j = 0; j < curve_data->points_per_channel; j++) {
 288                         dst = target;
 289                         src = source;
 290
 291                         dst->rf_power = src->rf_power;
 292                         dst->pa_detector = src->pa_detector;
 293                         dst->data_64qam = src->pcv;
 294                         /* "invent" the points for the other modulations */
 295 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 296                         dst->data_16qam = SUB(src->pcv, 12);
 297                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 298                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 299                         dst->data_barker = SUB(dst->data_bpsk, 14);
 300 #undef SUB
 301                         target += sizeof(*dst);
 302                         source += sizeof(*src);
 303                 }
 304         }
 305
 306         return 0;
 307 }
 308
 309 static int p54_convert_rev1(struct ieee80211_hw *dev,
 310                             struct pda_pa_curve_data *curve_data)
 311 {
 312         struct p54_common *priv = dev->priv;
 313         struct p54_pa_curve_data_sample *dst;
 314         struct pda_pa_curve_data_sample_rev1 *src;
 315         size_t cd_len = sizeof(*curve_data) +
 316                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 317                  curve_data->channels;
 318         unsigned int i, j;
 319         void *source, *target;
 320
 321         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 322         if (!priv->curve_data)
 323                 return -ENOMEM;
 324
 325         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 326         source = curve_data->data;
 327         target = priv->curve_data->data;
 328         for (i = 0; i < curve_data->channels; i++) {
 329                 __le16 *freq = source;
 330                 source += sizeof(__le16);
 331                 *((__le16 *)target) = *freq;
 332                 target += sizeof(__le16);
 333                 for (j = 0; j < curve_data->points_per_channel; j++) {
 334                         memcpy(target, source, sizeof(*src));
 335
 336                         target += sizeof(*dst);
 337                         source += sizeof(*src);
 338                 }
 339                 source++;
 340         }
 341
 342         return 0;
 343 }
 344
 345 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 346                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 347 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 348
 349 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 350                              u16 type)
 351 {
 352         struct p54_common *priv = dev->priv;
 353         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 354         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 355         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 356         int i;
 357
 358         if (len != (entry_size * num_entries)) {
 359                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 360                                  " type:(%x) len:%d.\n",
 361                        wiphy_name(dev->wiphy), type, len);
 362
 363                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 364                                      data, len);
 365
 366                 printk(KERN_ERR "%s: please report this issue.\n",
 367                         wiphy_name(dev->wiphy));
 368                 return;
 369         }
 370
 371         for (i = 0; i < num_entries; i++) {
 372                 struct pda_rssi_cal_entry *cal = data +
 373                                                  (offset + i * entry_size);
 374                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 375                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 376         }
 377 }
 378
 379 static void p54_parse_default_country(struct ieee80211_hw *dev,
 380                                       void *data, int len)
 381 {
 382         struct pda_country *country;
 383
 384         if (len != sizeof(*country)) {
 385                 printk(KERN_ERR "%s: found possible invalid default country "
 386                                 "eeprom entry. (entry size: %d)\n",
 387                        wiphy_name(dev->wiphy), len);
 388
 389                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 390                                      data, len);
 391
 392                 printk(KERN_ERR "%s: please report this issue.\n",
 393                         wiphy_name(dev->wiphy));
 394                 return;
 395         }
 396
 397         country = (struct pda_country *) data;
 398         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 399                 regulatory_hint(dev->wiphy, country->alpha2);
 400         else {
 401                 /* TODO:
 402                  * write a shared/common function that converts
 403                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 404                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 405                  */
 406         }
 407 }
 408
 409 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 410 {
 411         struct p54_common *priv = dev->priv;
 412         struct eeprom_pda_wrap *wrap = NULL;
 413         struct pda_entry *entry;
 414         unsigned int data_len, entry_len;
 415         void *tmp;
 416         int err;
 417         u8 *end = (u8 *)eeprom + len;
 418         u16 synth = 0;
 419
 420         wrap = (struct eeprom_pda_wrap *) eeprom;
 421         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 422
 423         /* verify that at least the entry length/code fits */
 424         while ((u8 *)entry <= end - sizeof(*entry)) {
 425                 entry_len = le16_to_cpu(entry->len);
 426                 data_len = ((entry_len - 1) << 1);
 427
 428                 /* abort if entry exceeds whole structure */
 429                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 430                         break;
 431
 432                 switch (le16_to_cpu(entry->code)) {
 433                 case PDR_MAC_ADDRESS:
 434                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 435                         break;
 436                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 437                         if (data_len < 2) {
 438                                 err = -EINVAL;
 439                                 goto err;
 440                         }
 441
 442                         if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
 443                                 err = -EINVAL;
 444                                 goto err;
 445                         }
 446
 447                         priv->output_limit = kmalloc(entry->data[1] *
 448                                 sizeof(*priv->output_limit), GFP_KERNEL);
 449
 450                         if (!priv->output_limit) {
 451                                 err = -ENOMEM;
 452                                 goto err;
 453                         }
 454
 455                         memcpy(priv->output_limit, &entry->data[2],
 456                                entry->data[1]*sizeof(*priv->output_limit));
 457                         priv->output_limit_len = entry->data[1];
 458                         break;
 459                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 460                         struct pda_pa_curve_data *curve_data =
 461                                 (struct pda_pa_curve_data *)entry->data;
 462                         if (data_len < sizeof(*curve_data)) {
 463                                 err = -EINVAL;
 464                                 goto err;
 465                         }
 466
 467                         switch (curve_data->cal_method_rev) {
 468                         case 0:
 469                                 err = p54_convert_rev0(dev, curve_data);
 470                                 break;
 471                         case 1:
 472                                 err = p54_convert_rev1(dev, curve_data);
 473                                 break;
 474                         default:
 475                                 printk(KERN_ERR "%s: unknown curve data "
 476                                                 "revision %d\n",
 477                                                 wiphy_name(dev->wiphy),
 478                                                 curve_data->cal_method_rev);
 479                                 err = -ENODEV;
 480                                 break;
 481                         }
 482                         if (err)
 483                                 goto err;
 484                         }
 485                         break;
 486                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 487                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 488                         if (!priv->iq_autocal) {
 489                                 err = -ENOMEM;
 490                                 goto err;
 491                         }
 492
 493                         memcpy(priv->iq_autocal, entry->data, data_len);
 494                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 495                         break;
 496                 case PDR_DEFAULT_COUNTRY:
 497                         p54_parse_default_country(dev, entry->data, data_len);
 498                         break;
 499                 case PDR_INTERFACE_LIST:
 500                         tmp = entry->data;
 501                         while ((u8 *)tmp < entry->data + data_len) {
 502                                 struct bootrec_exp_if *exp_if = tmp;
 503                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 504                                         synth = le16_to_cpu(exp_if->variant);
 505                                 tmp += sizeof(struct bootrec_exp_if);
 506                         }
 507                         break;
 508                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 509                         priv->version = *(u8 *)(entry->data + 1);
 510                         break;
 511                 case PDR_RSSI_LINEAR_APPROXIMATION:
 512                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 513                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 514                         p54_parse_rssical(dev, entry->data, data_len,
 515                                           le16_to_cpu(entry->code));
 516                         break;
 517                 case PDR_END:
 518                         /* make it overrun */
 519                         entry_len = len;
 520                         break;
 521                 case PDR_MANUFACTURING_PART_NUMBER:
 522                 case PDR_PDA_VERSION:
 523                 case PDR_NIC_SERIAL_NUMBER:
 524                 case PDR_REGULATORY_DOMAIN_LIST:
 525                 case PDR_TEMPERATURE_TYPE:
 526                 case PDR_PRISM_PCI_IDENTIFIER:
 527                 case PDR_COUNTRY_INFORMATION:
 528                 case PDR_OEM_NAME:
 529                 case PDR_PRODUCT_NAME:
 530                 case PDR_UTF8_OEM_NAME:
 531                 case PDR_UTF8_PRODUCT_NAME:
 532                 case PDR_COUNTRY_LIST:
 533                 case PDR_ANTENNA_GAIN:
 534                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 535                 case PDR_REGULATORY_POWER_LIMITS:
 536                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 537                 case PDR_PRISM_TX_IQ_CALIBRATION:
 538                 case PDR_BASEBAND_REGISTERS:
 539                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 540                         break;
 541                 default:
 542                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 543                                 wiphy_name(dev->wiphy),
 544                                 le16_to_cpu(entry->code));
 545                         break;
 546                 }
 547
 548                 entry = (void *)entry + (entry_len + 1)*2;
 549         }
 550
 551         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 552             !priv->curve_data) {
 553                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 554                         wiphy_name(dev->wiphy));
 555                 err = -EINVAL;
 556                 goto err;
 557         }
 558
 559         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 560         if (priv->rxhw == 4)
 561                 p54_init_xbow_synth(dev);
 562         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 563                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 564         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 565                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 566         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 567                 priv->rx_diversity_mask = 3;
 568         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 569                 priv->tx_diversity_mask = 3;
 570
 571         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 572                 u8 perm_addr[ETH_ALEN];
 573
 574                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 575                         wiphy_name(dev->wiphy));
 576                 random_ether_addr(perm_addr);
 577                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 578         }
 579
 580         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 581                 wiphy_name(dev->wiphy),
 582                 dev->wiphy->perm_addr,
 583                 priv->version, p54_rf_chips[priv->rxhw]);
 584
 585         return 0;
 586
 587   err:
 588         if (priv->iq_autocal) {
 589                 kfree(priv->iq_autocal);
 590                 priv->iq_autocal = NULL;
 591         }
 592
 593         if (priv->output_limit) {
 594                 kfree(priv->output_limit);
 595                 priv->output_limit = NULL;
 596         }
 597
 598         if (priv->curve_data) {
 599                 kfree(priv->curve_data);
 600                 priv->curve_data = NULL;
 601         }
 602
 603         printk(KERN_ERR "%s: eeprom parse failed!\n",
 604                 wiphy_name(dev->wiphy));
 605         return err;
 606 }
 607
 608 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 609 {
 610         struct p54_common *priv = dev->priv;
 611         int band = dev->conf.channel->band;
 612
 613         return ((rssi * priv->rssical_db[band].mul) / 64 +
 614                          priv->rssical_db[band].add) / 4;
 615 }
 616
 617 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 618 {
 619         struct p54_common *priv = dev->priv;
 620         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 621         struct ieee80211_rx_status rx_status = {0};
 622         u16 freq = le16_to_cpu(hdr->freq);
 623         size_t header_len = sizeof(*hdr);
 624         u32 tsf32;
 625         u8 rate = hdr->rate & 0xf;
 626
 627         /*
 628          * If the device is in a unspecified state we have to
 629          * ignore all data frames. Else we could end up with a
 630          * nasty crash.
 631          */
 632         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 633                 return 0;
 634
 635         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 636                 if (priv->filter_flags & FIF_FCSFAIL)
 637                         rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 638                 else
 639                         return 0;
 640         }
 641
 642         if (hdr->decrypt_status == P54_DECRYPT_OK)
 643                 rx_status.flag |= RX_FLAG_DECRYPTED;
 644         if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
 645             (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
 646                 rx_status.flag |= RX_FLAG_MMIC_ERROR;
 647
 648         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 649         rx_status.noise = priv->noise;
 650         /* XX correct? */
 651         rx_status.qual = (100 * hdr->rssi) / 127;
 652         if (hdr->rate & 0x10)
 653                 rx_status.flag |= RX_FLAG_SHORTPRE;
 654         if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
 655                 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
 656         else
 657                 rx_status.rate_idx = rate;
 658
 659         rx_status.freq = freq;
 660         rx_status.band =  dev->conf.channel->band;
 661         rx_status.antenna = hdr->antenna;
 662
 663         tsf32 = le32_to_cpu(hdr->tsf32);
 664         if (tsf32 < priv->tsf_low32)
 665                 priv->tsf_high32++;
 666         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 667         priv->tsf_low32 = tsf32;
 668
 669         rx_status.flag |= RX_FLAG_TSFT;
 670
 671         if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 672                 header_len += hdr->align[0];
 673
 674         skb_pull(skb, header_len);
 675         skb_trim(skb, le16_to_cpu(hdr->len));
 676
 677         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 678
 679         queue_delayed_work(dev->workqueue, &priv->work,
 680                            msecs_to_jiffies(P54_STATISTICS_UPDATE));
 681
 682         return -1;
 683 }
 684
 685 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 686 {
 687         struct p54_common *priv = dev->priv;
 688         int i;
 689
 690         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 691                 return ;
 692
 693         for (i = 0; i < dev->queues; i++)
 694                 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
 695                     priv->tx_stats[i + P54_QUEUE_DATA].limit)
 696                         ieee80211_wake_queue(dev, i);
 697 }
 698
 699 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
 700 {
 701         struct p54_common *priv = dev->priv;
 702         struct ieee80211_tx_info *info;
 703         struct memrecord *range;
 704         unsigned long flags;
 705         u32 freed = 0, last_addr = priv->rx_start;
 706
 707         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
 708                 return;
 709
 710         /*
 711          * don't try to free an already unlinked skb
 712          */
 713         if (unlikely((!skb->next) || (!skb->prev)))
 714                 return;
 715
 716         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 717         info = IEEE80211_SKB_CB(skb);
 718         range = (void *)info->rate_driver_data;
 719         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
 720                 struct ieee80211_tx_info *ni;
 721                 struct memrecord *mr;
 722
 723                 ni = IEEE80211_SKB_CB(skb->prev);
 724                 mr = (struct memrecord *)ni->rate_driver_data;
 725                 last_addr = mr->end_addr;
 726         }
 727         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
 728                 struct ieee80211_tx_info *ni;
 729                 struct memrecord *mr;
 730
 731                 ni = IEEE80211_SKB_CB(skb->next);
 732                 mr = (struct memrecord *)ni->rate_driver_data;
 733                 freed = mr->start_addr - last_addr;
 734         } else
 735                 freed = priv->rx_end - last_addr;
 736         __skb_unlink(skb, &priv->tx_queue);
 737         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 738         dev_kfree_skb_any(skb);
 739
 740         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 741                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 742                 p54_wake_free_queues(dev);
 743 }
 744 EXPORT_SYMBOL_GPL(p54_free_skb);
 745
 746 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 747                                            __le32 req_id)
 748 {
 749         struct p54_common *priv = dev->priv;
 750         struct sk_buff *entry = priv->tx_queue.next;
 751         unsigned long flags;
 752
 753         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 754         while (entry != (struct sk_buff *)&priv->tx_queue) {
 755                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 756
 757                 if (hdr->req_id == req_id) {
 758                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 759                         return entry;
 760                 }
 761                 entry = entry->next;
 762         }
 763         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 764         return NULL;
 765 }
 766
 767 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 768 {
 769         struct p54_common *priv = dev->priv;
 770         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 771         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 772         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
 773         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 774         struct memrecord *range = NULL;
 775         u32 freed = 0;
 776         u32 last_addr = priv->rx_start;
 777         unsigned long flags;
 778         int count, idx;
 779
 780         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 781         while (entry != (struct sk_buff *)&priv->tx_queue) {
 782                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 783                 struct p54_hdr *entry_hdr;
 784                 struct p54_tx_data *entry_data;
 785                 unsigned int pad = 0, frame_len;
 786
 787                 range = (void *)info->rate_driver_data;
 788                 if (range->start_addr != addr) {
 789                         last_addr = range->end_addr;
 790                         entry = entry->next;
 791                         continue;
 792                 }
 793
 794                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 795                         struct ieee80211_tx_info *ni;
 796                         struct memrecord *mr;
 797
 798                         ni = IEEE80211_SKB_CB(entry->next);
 799                         mr = (struct memrecord *)ni->rate_driver_data;
 800                         freed = mr->start_addr - last_addr;
 801                 } else
 802                         freed = priv->rx_end - last_addr;
 803
 804                 last_addr = range->end_addr;
 805                 __skb_unlink(entry, &priv->tx_queue);
 806                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 807
 808                 frame_len = entry->len;
 809                 entry_hdr = (struct p54_hdr *) entry->data;
 810                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 811                 priv->tx_stats[entry_data->hw_queue].len--;
 812                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 813
 814                 /*
 815                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 816                  * generated by the driver. Therefore tx_status is bogus
 817                  * and we don't want to confuse the mac80211 stack.
 818                  */
 819                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 820                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 821                                 priv->cached_beacon = NULL;
 822
 823                         kfree_skb(entry);
 824                         goto out;
 825                 }
 826
 827                 /*
 828                  * Clear manually, ieee80211_tx_info_clear_status would
 829                  * clear the counts too and we need them.
 830                  */
 831                 memset(&info->status.ampdu_ack_len, 0,
 832                        sizeof(struct ieee80211_tx_info) -
 833                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 834                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 835                                       status.ampdu_ack_len) != 23);
 836
 837                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 838                         pad = entry_data->align[0];
 839
 840                 /* walk through the rates array and adjust the counts */
 841                 count = payload->tries;
 842                 for (idx = 0; idx < 4; idx++) {
 843                         if (count >= info->status.rates[idx].count) {
 844                                 count -= info->status.rates[idx].count;
 845                         } else if (count > 0) {
 846                                 info->status.rates[idx].count = count;
 847                                 count = 0;
 848                         } else {
 849                                 info->status.rates[idx].idx = -1;
 850                                 info->status.rates[idx].count = 0;
 851                         }
 852                 }
 853
 854                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 855                      (!payload->status))
 856                         info->flags |= IEEE80211_TX_STAT_ACK;
 857                 if (payload->status & P54_TX_PSM_CANCELLED)
 858                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 859                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 860                                 (int)payload->ack_rssi);
 861
 862                 /* Undo all changes to the frame. */
 863                 switch (entry_data->key_type) {
 864                 case P54_CRYPTO_TKIPMICHAEL: {
 865                         u8 *iv = (u8 *)(entry_data->align + pad +
 866                                         entry_data->crypt_offset);
 867
 868                         /* Restore the original TKIP IV. */
 869                         iv[2] = iv[0];
 870                         iv[0] = iv[1];
 871                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 872
 873                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 874                         break;
 875                         }
 876                 case P54_CRYPTO_AESCCMP:
 877                         frame_len -= 8; /* remove CCMP_MIC */
 878                         break;
 879                 case P54_CRYPTO_WEP:
 880                         frame_len -= 4; /* remove WEP_ICV */
 881                         break;
 882                 }
 883                 skb_trim(entry, frame_len);
 884                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 885                 ieee80211_tx_status_irqsafe(dev, entry);
 886                 goto out;
 887         }
 888         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 889
 890 out:
 891         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 892                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 893                 p54_wake_free_queues(dev);
 894 }
 895
 896 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
 897                                    struct sk_buff *skb)
 898 {
 899         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 900         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
 901         struct p54_common *priv = dev->priv;
 902
 903         if (!priv->eeprom)
 904                 return ;
 905
 906         if (priv->fw_var >= 0x509) {
 907                 memcpy(priv->eeprom, eeprom->v2.data,
 908                        le16_to_cpu(eeprom->v2.len));
 909         } else {
 910                 memcpy(priv->eeprom, eeprom->v1.data,
 911                        le16_to_cpu(eeprom->v1.len));
 912         }
 913
 914         complete(&priv->eeprom_comp);
 915 }
 916
 917 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
 918 {
 919         struct p54_common *priv = dev->priv;
 920         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 921         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
 922         u32 tsf32;
 923
 924         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 925                 return ;
 926
 927         tsf32 = le32_to_cpu(stats->tsf32);
 928         if (tsf32 < priv->tsf_low32)
 929                 priv->tsf_high32++;
 930         priv->tsf_low32 = tsf32;
 931
 932         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
 933         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
 934         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
 935
 936         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
 937
 938         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
 939 }
 940
 941 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
 942 {
 943         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 944         struct p54_trap *trap = (struct p54_trap *) hdr->data;
 945         u16 event = le16_to_cpu(trap->event);
 946         u16 freq = le16_to_cpu(trap->frequency);
 947
 948         switch (event) {
 949         case P54_TRAP_BEACON_TX:
 950                 break;
 951         case P54_TRAP_RADAR:
 952                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
 953                         wiphy_name(dev->wiphy), freq);
 954                 break;
 955         case P54_TRAP_NO_BEACON:
 956                 break;
 957         case P54_TRAP_SCAN:
 958                 break;
 959         case P54_TRAP_TBTT:
 960                 break;
 961         case P54_TRAP_TIMER:
 962                 break;
 963         default:
 964                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
 965                        wiphy_name(dev->wiphy), event, freq);
 966                 break;
 967         }
 968 }
 969
 970 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
 971 {
 972         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 973
 974         switch (le16_to_cpu(hdr->type)) {
 975         case P54_CONTROL_TYPE_TXDONE:
 976                 p54_rx_frame_sent(dev, skb);
 977                 break;
 978         case P54_CONTROL_TYPE_TRAP:
 979                 p54_rx_trap(dev, skb);
 980                 break;
 981         case P54_CONTROL_TYPE_BBP:
 982                 break;
 983         case P54_CONTROL_TYPE_STAT_READBACK:
 984                 p54_rx_stats(dev, skb);
 985                 break;
 986         case P54_CONTROL_TYPE_EEPROM_READBACK:
 987                 p54_rx_eeprom_readback(dev, skb);
 988                 break;
 989         default:
 990                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
 991                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
 992                 break;
 993         }
 994
 995         return 0;
 996 }
 997
 998 /* returns zero if skb can be reused */
 999 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1000 {
1001         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1002
1003         if (type & P54_HDR_FLAG_CONTROL)
1004                 return p54_rx_control(dev, skb);
1005         else
1006                 return p54_rx_data(dev, skb);
1007 }
1008 EXPORT_SYMBOL_GPL(p54_rx);
1009
1010 /*
1011  * So, the firmware is somewhat stupid and doesn't know what places in its
1012  * memory incoming data should go to. By poking around in the firmware, we
1013  * can find some unused memory to upload our packets to. However, data that we
1014  * want the card to TX needs to stay intact until the card has told us that
1015  * it is done with it. This function finds empty places we can upload to and
1016  * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
1017  * allocated areas.
1018  */
1019 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1020                                struct p54_hdr *data, u32 len)
1021 {
1022         struct p54_common *priv = dev->priv;
1023         struct sk_buff *entry = priv->tx_queue.next;
1024         struct sk_buff *target_skb = NULL;
1025         struct ieee80211_tx_info *info;
1026         struct memrecord *range;
1027         u32 last_addr = priv->rx_start;
1028         u32 largest_hole = 0;
1029         u32 target_addr = priv->rx_start;
1030         unsigned long flags;
1031         unsigned int left;
1032         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1033
1034         if (!skb)
1035                 return -EINVAL;
1036
1037         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1038
1039         left = skb_queue_len(&priv->tx_queue);
1040         if (unlikely(left >= 28)) {
1041                 /*
1042                  * The tx_queue is nearly full!
1043                  * We have throttle normal data traffic, because we must
1044                  * have a few spare slots for control frames left.
1045                  */
1046                 ieee80211_stop_queues(dev);
1047                 queue_delayed_work(dev->workqueue, &priv->work,
1048                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1049
1050                 if (unlikely(left == 32)) {
1051                         /*
1052                          * The tx_queue is now really full.
1053                          *
1054                          * TODO: check if the device has crashed and reset it.
1055                          */
1056                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1057                         return -ENOSPC;
1058                 }
1059         }
1060
1061         while (left--) {
1062                 u32 hole_size;
1063                 info = IEEE80211_SKB_CB(entry);
1064                 range = (void *)info->rate_driver_data;
1065                 hole_size = range->start_addr - last_addr;
1066                 if (!target_skb && hole_size >= len) {
1067                         target_skb = entry->prev;
1068                         hole_size -= len;
1069                         target_addr = last_addr;
1070                 }
1071                 largest_hole = max(largest_hole, hole_size);
1072                 last_addr = range->end_addr;
1073                 entry = entry->next;
1074         }
1075         if (!target_skb && priv->rx_end - last_addr >= len) {
1076                 target_skb = priv->tx_queue.prev;
1077                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1078                 if (!skb_queue_empty(&priv->tx_queue)) {
1079                         info = IEEE80211_SKB_CB(target_skb);
1080                         range = (void *)info->rate_driver_data;
1081                         target_addr = range->end_addr;
1082                 }
1083         } else
1084                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1085
1086         if (!target_skb) {
1087                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1088                 ieee80211_stop_queues(dev);
1089                 return -ENOSPC;
1090         }
1091
1092         info = IEEE80211_SKB_CB(skb);
1093         range = (void *)info->rate_driver_data;
1094         range->start_addr = target_addr;
1095         range->end_addr = target_addr + len;
1096         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1097         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1098
1099         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1100                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1101                 ieee80211_stop_queues(dev);
1102
1103         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1104         return 0;
1105 }
1106
1107 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev,
1108                 u16 hdr_flags, u16 len, u16 type, gfp_t memflags)
1109 {
1110         struct p54_common *priv = dev->priv;
1111         struct p54_hdr *hdr;
1112         struct sk_buff *skb;
1113
1114         skb = __dev_alloc_skb(len + priv->tx_hdr_len, memflags);
1115         if (!skb)
1116                 return NULL;
1117         skb_reserve(skb, priv->tx_hdr_len);
1118
1119         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1120         hdr->flags = cpu_to_le16(hdr_flags);
1121         hdr->len = cpu_to_le16(len - sizeof(*hdr));
1122         hdr->type = cpu_to_le16(type);
1123         hdr->tries = hdr->rts_tries = 0;
1124
1125         if (unlikely(p54_assign_address(dev, skb, hdr, len))) {
1126                 kfree_skb(skb);
1127                 return NULL;
1128         }
1129         return skb;
1130 }
1131
1132 int p54_read_eeprom(struct ieee80211_hw *dev)
1133 {
1134         struct p54_common *priv = dev->priv;
1135         struct p54_hdr *hdr = NULL;
1136         struct p54_eeprom_lm86 *eeprom_hdr;
1137         struct sk_buff *skb;
1138         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1139         int ret = -ENOMEM;
1140         void *eeprom = NULL;
1141
1142         maxblocksize = EEPROM_READBACK_LEN;
1143         if (priv->fw_var >= 0x509)
1144                 maxblocksize -= 0xc;
1145         else
1146                 maxblocksize -= 0x4;
1147
1148         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*hdr) +
1149                             sizeof(*eeprom_hdr) + maxblocksize,
1150                             P54_CONTROL_TYPE_EEPROM_READBACK, GFP_KERNEL);
1151         if (!skb)
1152                 goto free;
1153         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1154         if (!priv->eeprom)
1155                 goto free;
1156         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1157         if (!eeprom)
1158                 goto free;
1159
1160         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1161                      sizeof(*eeprom_hdr) + maxblocksize);
1162
1163         while (eeprom_size) {
1164                 blocksize = min(eeprom_size, maxblocksize);
1165                 if (priv->fw_var < 0x509) {
1166                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1167                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1168                 } else {
1169                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1170                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1171                         eeprom_hdr->v2.magic2 = 0xf;
1172                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1173                 }
1174                 priv->tx(dev, skb);
1175
1176                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1177                         printk(KERN_ERR "%s: device does not respond!\n",
1178                                 wiphy_name(dev->wiphy));
1179                         ret = -EBUSY;
1180                         goto free;
1181                 }
1182
1183                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1184                 offset += blocksize;
1185                 eeprom_size -= blocksize;
1186         }
1187
1188         ret = p54_parse_eeprom(dev, eeprom, offset);
1189 free:
1190         kfree(priv->eeprom);
1191         priv->eeprom = NULL;
1192         p54_free_skb(dev, skb);
1193         kfree(eeprom);
1194
1195         return ret;
1196 }
1197 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1198
1199 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1200                 bool set)
1201 {
1202         struct p54_common *priv = dev->priv;
1203         struct sk_buff *skb;
1204         struct p54_tim *tim;
1205
1206         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1207                       sizeof(struct p54_hdr) + sizeof(*tim),
1208                       P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1209         if (!skb)
1210                 return -ENOMEM;
1211
1212         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1213         tim->count = 1;
1214         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1215         priv->tx(dev, skb);
1216         return 0;
1217 }
1218
1219 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1220 {
1221         struct p54_common *priv = dev->priv;
1222         struct sk_buff *skb;
1223         struct p54_sta_unlock *sta;
1224
1225         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1226                 sizeof(struct p54_hdr) + sizeof(*sta),
1227                 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1228         if (!skb)
1229                 return -ENOMEM;
1230
1231         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1232         memcpy(sta->addr, addr, ETH_ALEN);
1233         priv->tx(dev, skb);
1234         return 0;
1235 }
1236
1237 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1238                               enum sta_notify_cmd notify_cmd,
1239                               struct ieee80211_sta *sta)
1240 {
1241         switch (notify_cmd) {
1242         case STA_NOTIFY_ADD:
1243         case STA_NOTIFY_REMOVE:
1244                 /*
1245                  * Notify the firmware that we don't want or we don't
1246                  * need to buffer frames for this station anymore.
1247                  */
1248
1249                 p54_sta_unlock(dev, sta->addr);
1250                 break;
1251         case STA_NOTIFY_AWAKE:
1252                 /* update the firmware's filter table */
1253                 p54_sta_unlock(dev, sta->addr);
1254                 break;
1255         default:
1256                 break;
1257         }
1258 }
1259
1260 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1261 {
1262         struct p54_common *priv = dev->priv;
1263         struct sk_buff *skb;
1264         struct p54_hdr *hdr;
1265         struct p54_txcancel *cancel;
1266
1267         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1268                 sizeof(struct p54_hdr) + sizeof(*cancel),
1269                 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1270         if (!skb)
1271                 return -ENOMEM;
1272
1273         hdr = (void *)entry->data;
1274         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1275         cancel->req_id = hdr->req_id;
1276         priv->tx(dev, skb);
1277         return 0;
1278 }
1279
1280 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1281                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1282                 u16 *flags, u16 *aid)
1283 {
1284         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1285         struct p54_common *priv = dev->priv;
1286         int ret = 1;
1287
1288         switch (priv->mode) {
1289         case NL80211_IFTYPE_MONITOR:
1290                 /*
1291                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1292                  * every frame in promiscuous/monitor mode.
1293                  * see STSW45x0C LMAC API - page 12.
1294                  */
1295                 *aid = 0;
1296                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1297                 *queue += P54_QUEUE_DATA;
1298                 break;
1299         case NL80211_IFTYPE_STATION:
1300                 *aid = 1;
1301                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1302                         *queue = P54_QUEUE_MGMT;
1303                         ret = 0;
1304                 } else
1305                         *queue += P54_QUEUE_DATA;
1306                 break;
1307         case NL80211_IFTYPE_AP:
1308         case NL80211_IFTYPE_ADHOC:
1309         case NL80211_IFTYPE_MESH_POINT:
1310                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1311                         *aid = 0;
1312                         *queue = P54_QUEUE_CAB;
1313                         return 0;
1314                 }
1315
1316                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1317                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1318                                 *aid = 0;
1319                                 *queue = P54_QUEUE_MGMT;
1320                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1321                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1322                                 return 0;
1323                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1324                                 *aid = 0;
1325
1326                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1327                                         /*
1328                                          * Injecting beacons on top of a AP is
1329                                          * not a good idea... nevertheless,
1330                                          * it should be doable.
1331                                          */
1332
1333                                         *queue += P54_QUEUE_DATA;
1334                                         return 1;
1335                                 }
1336
1337                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1338                                 *queue = P54_QUEUE_BEACON;
1339                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1340                                 return 0;
1341                         } else {
1342                                 *queue = P54_QUEUE_MGMT;
1343                                 ret = 0;
1344                         }
1345                 } else
1346                         *queue += P54_QUEUE_DATA;
1347
1348                 if (info->control.sta)
1349                         *aid = info->control.sta->aid;
1350                 else
1351                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1352                 break;
1353         }
1354         return ret;
1355 }
1356
1357 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1358 {
1359         switch (alg) {
1360         case ALG_WEP:
1361                 return P54_CRYPTO_WEP;
1362         case ALG_TKIP:
1363                 return P54_CRYPTO_TKIPMICHAEL;
1364         case ALG_CCMP:
1365                 return P54_CRYPTO_AESCCMP;
1366         default:
1367                 return 0;
1368         }
1369 }
1370
1371 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1372 {
1373         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1374         struct ieee80211_tx_queue_stats *current_queue;
1375         struct p54_common *priv = dev->priv;
1376         struct p54_hdr *hdr;
1377         struct p54_tx_data *txhdr;
1378         size_t padding, len, tim_len = 0;
1379         int i, j, ridx, ret;
1380         u16 hdr_flags = 0, aid = 0;
1381         u8 rate, queue, crypt_offset = 0;
1382         u8 cts_rate = 0x20;
1383         u8 rc_flags;
1384         u8 calculated_tries[4];
1385         u8 nrates = 0, nremaining = 8;
1386
1387         queue = skb_get_queue_mapping(skb);
1388
1389         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1390         current_queue = &priv->tx_stats[queue];
1391         if (unlikely((current_queue->len > current_queue->limit) && ret))
1392                 return NETDEV_TX_BUSY;
1393         current_queue->len++;
1394         current_queue->count++;
1395         if ((current_queue->len == current_queue->limit) && ret)
1396                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1397
1398         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1399         len = skb->len;
1400
1401         if (info->control.hw_key) {
1402                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1403                 if (info->control.hw_key->alg == ALG_TKIP) {
1404                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1405                         /*
1406                          * The firmware excepts that the IV has to have
1407                          * this special format
1408                          */
1409                         iv[1] = iv[0];
1410                         iv[0] = iv[2];
1411                         iv[2] = 0;
1412                 }
1413         }
1414
1415         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1416         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1417
1418         if (padding)
1419                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1420         hdr->type = cpu_to_le16(aid);
1421         hdr->rts_tries = info->control.rates[0].count;
1422
1423         /*
1424          * we register the rates in perfect order, and
1425          * RTS/CTS won't happen on 5 GHz
1426          */
1427         cts_rate = info->control.rts_cts_rate_idx;
1428
1429         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1430
1431         /* see how many rates got used */
1432         for (i = 0; i < 4; i++) {
1433                 if (info->control.rates[i].idx < 0)
1434                         break;
1435                 nrates++;
1436         }
1437
1438         /* limit tries to 8/nrates per rate */
1439         for (i = 0; i < nrates; i++) {
1440                 /*
1441                  * The magic expression here is equivalent to 8/nrates for
1442                  * all values that matter, but avoids division and jumps.
1443                  * Note that nrates can only take the values 1 through 4.
1444                  */
1445                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1446                                                  info->control.rates[i].count);
1447                 nremaining -= calculated_tries[i];
1448         }
1449
1450         /* if there are tries left, distribute from back to front */
1451         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1452                 int tmp = info->control.rates[i].count - calculated_tries[i];
1453
1454                 if (tmp <= 0)
1455                         continue;
1456                 /* RC requested more tries at this rate */
1457
1458                 tmp = min_t(int, tmp, nremaining);
1459                 calculated_tries[i] += tmp;
1460                 nremaining -= tmp;
1461         }
1462
1463         ridx = 0;
1464         for (i = 0; i < nrates && ridx < 8; i++) {
1465                 /* we register the rates in perfect order */
1466                 rate = info->control.rates[i].idx;
1467                 if (info->band == IEEE80211_BAND_5GHZ)
1468                         rate += 4;
1469
1470                 /* store the count we actually calculated for TX status */
1471                 info->control.rates[i].count = calculated_tries[i];
1472
1473                 rc_flags = info->control.rates[i].flags;
1474                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1475                         rate |= 0x10;
1476                         cts_rate |= 0x10;
1477                 }
1478                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1479                         rate |= 0x40;
1480                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1481                         rate |= 0x20;
1482                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1483                         txhdr->rateset[ridx] = rate;
1484                         ridx++;
1485                 }
1486         }
1487
1488         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1489                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1490
1491         /* TODO: enable bursting */
1492         hdr->flags = cpu_to_le16(hdr_flags);
1493         hdr->tries = ridx;
1494         txhdr->rts_rate_idx = 0;
1495         if (info->control.hw_key) {
1496                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1497                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1498                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1499                 if (info->control.hw_key->alg == ALG_TKIP) {
1500                         if (unlikely(skb_tailroom(skb) < 12))
1501                                 goto err;
1502                         /* reserve space for the MIC key */
1503                         len += 8;
1504                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1505                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1506                 }
1507                 /* reserve some space for ICV */
1508                 len += info->control.hw_key->icv_len;
1509                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1510                        info->control.hw_key->icv_len);
1511         } else {
1512                 txhdr->key_type = 0;
1513                 txhdr->key_len = 0;
1514         }
1515         txhdr->crypt_offset = crypt_offset;
1516         txhdr->hw_queue = queue;
1517         txhdr->backlog = current_queue->len;
1518         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1519         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1520                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1521         txhdr->output_power = priv->output_power;
1522         txhdr->cts_rate = cts_rate;
1523         if (padding)
1524                 txhdr->align[0] = padding;
1525
1526         hdr->len = cpu_to_le16(len);
1527         /* modifies skb->cb and with it info, so must be last! */
1528         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1529                 goto err;
1530         priv->tx(dev, skb);
1531
1532         queue_delayed_work(dev->workqueue, &priv->work,
1533                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1534
1535         return NETDEV_TX_OK;
1536
1537  err:
1538         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1539         current_queue->len--;
1540         current_queue->count--;
1541         return NETDEV_TX_BUSY;
1542 }
1543
1544 static int p54_setup_mac(struct ieee80211_hw *dev)
1545 {
1546         struct p54_common *priv = dev->priv;
1547         struct sk_buff *skb;
1548         struct p54_setup_mac *setup;
1549         u16 mode;
1550
1551         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup) +
1552                             sizeof(struct p54_hdr), P54_CONTROL_TYPE_SETUP,
1553                             GFP_ATOMIC);
1554         if (!skb)
1555                 return -ENOMEM;
1556
1557         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1558         if (dev->conf.radio_enabled) {
1559                 switch (priv->mode) {
1560                 case NL80211_IFTYPE_STATION:
1561                         mode = P54_FILTER_TYPE_STATION;
1562                         break;
1563                 case NL80211_IFTYPE_AP:
1564                         mode = P54_FILTER_TYPE_AP;
1565                         break;
1566                 case NL80211_IFTYPE_ADHOC:
1567                 case NL80211_IFTYPE_MESH_POINT:
1568                         mode = P54_FILTER_TYPE_IBSS;
1569                         break;
1570                 case NL80211_IFTYPE_MONITOR:
1571                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1572                         break;
1573                 default:
1574                         mode = P54_FILTER_TYPE_NONE;
1575                         break;
1576                 }
1577
1578                 /*
1579                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1580                  * STSW45X0C LMAC API - page 12
1581                  */
1582                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1583                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1584                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1585                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1586         } else
1587                 mode = P54_FILTER_TYPE_RX_DISABLED;
1588
1589         setup->mac_mode = cpu_to_le16(mode);
1590         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1591         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1592         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1593         setup->rx_align = 0;
1594         if (priv->fw_var < 0x500) {
1595                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1596                 memset(setup->v1.rts_rates, 0, 8);
1597                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1598                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1599                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1600                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1601                 setup->v1.unalloc0 = cpu_to_le16(0);
1602         } else {
1603                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1604                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1605                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1606                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1607                 setup->v2.truncate = cpu_to_le16(48896);
1608                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1609                 setup->v2.sbss_offset = 0;
1610                 setup->v2.mcast_window = 0;
1611                 setup->v2.rx_rssi_threshold = 0;
1612                 setup->v2.rx_ed_threshold = 0;
1613                 setup->v2.ref_clock = cpu_to_le32(644245094);
1614                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1615                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1616         }
1617         priv->tx(dev, skb);
1618         return 0;
1619 }
1620
1621 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1622 {
1623         struct p54_common *priv = dev->priv;
1624         struct sk_buff *skb;
1625         struct p54_scan *chan;
1626         unsigned int i;
1627         void *entry;
1628         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1629         int band = dev->conf.channel->band;
1630
1631         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan) +
1632                             sizeof(struct p54_hdr), P54_CONTROL_TYPE_SCAN,
1633                             GFP_ATOMIC);
1634         if (!skb)
1635                 return -ENOMEM;
1636
1637         chan = (struct p54_scan *) skb_put(skb, sizeof(*chan));
1638         memset(chan->padding1, 0, sizeof(chan->padding1));
1639         chan->mode = cpu_to_le16(mode);
1640         chan->dwell = cpu_to_le16(dwell);
1641
1642         for (i = 0; i < priv->iq_autocal_len; i++) {
1643                 if (priv->iq_autocal[i].freq != freq)
1644                         continue;
1645
1646                 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
1647                        sizeof(*priv->iq_autocal));
1648                 break;
1649         }
1650         if (i == priv->iq_autocal_len)
1651                 goto err;
1652
1653         for (i = 0; i < priv->output_limit_len; i++) {
1654                 if (priv->output_limit[i].freq != freq)
1655                         continue;
1656
1657                 chan->val_barker = 0x38;
1658                 chan->val_bpsk = chan->dup_bpsk =
1659                         priv->output_limit[i].val_bpsk;
1660                 chan->val_qpsk = chan->dup_qpsk =
1661                         priv->output_limit[i].val_qpsk;
1662                 chan->val_16qam = chan->dup_16qam =
1663                         priv->output_limit[i].val_16qam;
1664                 chan->val_64qam = chan->dup_64qam =
1665                         priv->output_limit[i].val_64qam;
1666                 break;
1667         }
1668         if (i == priv->output_limit_len)
1669                 goto err;
1670
1671         entry = priv->curve_data->data;
1672         for (i = 0; i < priv->curve_data->channels; i++) {
1673                 if (*((__le16 *)entry) != freq) {
1674                         entry += sizeof(__le16);
1675                         entry += sizeof(struct p54_pa_curve_data_sample) *
1676                                  priv->curve_data->points_per_channel;
1677                         continue;
1678                 }
1679
1680                 entry += sizeof(__le16);
1681                 chan->pa_points_per_curve = 8;
1682                 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1683                 memcpy(chan->curve_data, entry,
1684                        sizeof(struct p54_pa_curve_data_sample) *
1685                        min((u8)8, priv->curve_data->points_per_channel));
1686                 break;
1687         }
1688
1689         if (priv->fw_var < 0x500) {
1690                 chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1691                 chan->v1_rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1692         } else {
1693                 chan->v2.rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1694                 chan->v2.rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1695                 chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1696                 memset(chan->v2.rts_rates, 0, 8);
1697         }
1698         priv->tx(dev, skb);
1699         return 0;
1700
1701  err:
1702         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1703         p54_free_skb(dev, skb);
1704         return -EINVAL;
1705 }
1706
1707 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1708 {
1709         struct p54_common *priv = dev->priv;
1710         struct sk_buff *skb;
1711         struct p54_led *led;
1712
1713         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led) +
1714                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_LED,
1715                         GFP_ATOMIC);
1716         if (!skb)
1717                 return -ENOMEM;
1718
1719         led = (struct p54_led *)skb_put(skb, sizeof(*led));
1720         led->mode = cpu_to_le16(mode);
1721         led->led_permanent = cpu_to_le16(link);
1722         led->led_temporary = cpu_to_le16(act);
1723         led->duration = cpu_to_le16(1000);
1724         priv->tx(dev, skb);
1725         return 0;
1726 }
1727
1728 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1729 do {                                                            \
1730         queue.aifs = cpu_to_le16(ai_fs);                        \
1731         queue.cwmin = cpu_to_le16(cw_min);                      \
1732         queue.cwmax = cpu_to_le16(cw_max);                      \
1733         queue.txop = cpu_to_le16(_txop);                        \
1734 } while(0)
1735
1736 static int p54_set_edcf(struct ieee80211_hw *dev)
1737 {
1738         struct p54_common *priv = dev->priv;
1739         struct sk_buff *skb;
1740         struct p54_edcf *edcf;
1741
1742         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf) +
1743                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_DCFINIT,
1744                         GFP_ATOMIC);
1745         if (!skb)
1746                 return -ENOMEM;
1747
1748         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1749         if (priv->use_short_slot) {
1750                 edcf->slottime = 9;
1751                 edcf->sifs = 0x10;
1752                 edcf->eofpad = 0x00;
1753         } else {
1754                 edcf->slottime = 20;
1755                 edcf->sifs = 0x0a;
1756                 edcf->eofpad = 0x06;
1757         }
1758         /* (see prism54/isl_oid.h for further details) */
1759         edcf->frameburst = cpu_to_le16(0);
1760         edcf->round_trip_delay = cpu_to_le16(0);
1761         edcf->flags = 0;
1762         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1763         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1764         priv->tx(dev, skb);
1765         return 0;
1766 }
1767
1768 static int p54_set_ps(struct ieee80211_hw *dev)
1769 {
1770         struct p54_common *priv = dev->priv;
1771         struct sk_buff *skb;
1772         struct p54_psm *psm;
1773         u16 mode;
1774         int i;
1775
1776         if (dev->conf.flags & IEEE80211_CONF_PS)
1777                 mode = P54_PSM | P54_PSM_DTIM | P54_PSM_MCBC;
1778         else
1779                 mode = P54_PSM_CAM;
1780
1781         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm) +
1782                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_PSM,
1783                         GFP_ATOMIC);
1784         if (!skb)
1785                 return -ENOMEM;
1786
1787         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1788         psm->mode = cpu_to_le16(mode);
1789         psm->aid = cpu_to_le16(priv->aid);
1790         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1791                 psm->intervals[i].interval =
1792                         cpu_to_le16(dev->conf.listen_interval);
1793                 psm->intervals[i].periods = cpu_to_le16(1);
1794         }
1795
1796         psm->beacon_rssi_skip_max = 60;
1797         psm->rssi_delta_threshold = 0;
1798         psm->nr = 0;
1799
1800         priv->tx(dev, skb);
1801
1802         return 0;
1803 }
1804
1805 static int p54_beacon_tim(struct sk_buff *skb)
1806 {
1807         /*
1808          * the good excuse for this mess is ... the firmware.
1809          * The dummy TIM MUST be at the end of the beacon frame,
1810          * because it'll be overwritten!
1811          */
1812
1813         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1814         u8 *pos, *end;
1815
1816         if (skb->len <= sizeof(mgmt))
1817                 return -EINVAL;
1818
1819         pos = (u8 *)mgmt->u.beacon.variable;
1820         end = skb->data + skb->len;
1821         while (pos < end) {
1822                 if (pos + 2 + pos[1] > end)
1823                         return -EINVAL;
1824
1825                 if (pos[0] == WLAN_EID_TIM) {
1826                         u8 dtim_len = pos[1];
1827                         u8 dtim_period = pos[3];
1828                         u8 *next = pos + 2 + dtim_len;
1829
1830                         if (dtim_len < 3)
1831                                 return -EINVAL;
1832
1833                         memmove(pos, next, end - next);
1834
1835                         if (dtim_len > 3)
1836                                 skb_trim(skb, skb->len - (dtim_len - 3));
1837
1838                         pos = end - (dtim_len + 2);
1839
1840                         /* add the dummy at the end */
1841                         pos[0] = WLAN_EID_TIM;
1842                         pos[1] = 3;
1843                         pos[2] = 0;
1844                         pos[3] = dtim_period;
1845                         pos[4] = 0;
1846                         return 0;
1847                 }
1848                 pos += 2 + pos[1];
1849         }
1850         return 0;
1851 }
1852
1853 static int p54_beacon_update(struct ieee80211_hw *dev,
1854                         struct ieee80211_vif *vif)
1855 {
1856         struct p54_common *priv = dev->priv;
1857         struct sk_buff *beacon;
1858         int ret;
1859
1860         if (priv->cached_beacon) {
1861                 p54_tx_cancel(dev, priv->cached_beacon);
1862                 /* wait for the last beacon the be freed */
1863                 msleep(10);
1864         }
1865
1866         beacon = ieee80211_beacon_get(dev, vif);
1867         if (!beacon)
1868                 return -ENOMEM;
1869         ret = p54_beacon_tim(beacon);
1870         if (ret)
1871                 return ret;
1872         ret = p54_tx(dev, beacon);
1873         if (ret)
1874                 return ret;
1875         priv->cached_beacon = beacon;
1876         priv->tsf_high32 = 0;
1877         priv->tsf_low32 = 0;
1878
1879         return 0;
1880 }
1881
1882 static int p54_start(struct ieee80211_hw *dev)
1883 {
1884         struct p54_common *priv = dev->priv;
1885         int err;
1886
1887         mutex_lock(&priv->conf_mutex);
1888         err = priv->open(dev);
1889         if (err)
1890                 goto out;
1891         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
1892         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
1893         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
1894         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
1895         err = p54_set_edcf(dev);
1896         if (err)
1897                 goto out;
1898
1899         memset(priv->bssid, ~0, ETH_ALEN);
1900         priv->mode = NL80211_IFTYPE_MONITOR;
1901         err = p54_setup_mac(dev);
1902         if (err) {
1903                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1904                 goto out;
1905         }
1906
1907         queue_delayed_work(dev->workqueue, &priv->work, 0);
1908
1909 out:
1910         mutex_unlock(&priv->conf_mutex);
1911         return err;
1912 }
1913
1914 static void p54_stop(struct ieee80211_hw *dev)
1915 {
1916         struct p54_common *priv = dev->priv;
1917         struct sk_buff *skb;
1918
1919         mutex_lock(&priv->conf_mutex);
1920         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1921         cancel_delayed_work_sync(&priv->work);
1922         if (priv->cached_beacon)
1923                 p54_tx_cancel(dev, priv->cached_beacon);
1924
1925         priv->stop(dev);
1926         while ((skb = skb_dequeue(&priv->tx_queue)))
1927                 kfree_skb(skb);
1928         priv->cached_beacon = NULL;
1929         priv->tsf_high32 = priv->tsf_low32 = 0;
1930         mutex_unlock(&priv->conf_mutex);
1931 }
1932
1933 static int p54_add_interface(struct ieee80211_hw *dev,
1934                              struct ieee80211_if_init_conf *conf)
1935 {
1936         struct p54_common *priv = dev->priv;
1937
1938         mutex_lock(&priv->conf_mutex);
1939         if (priv->mode != NL80211_IFTYPE_MONITOR) {
1940                 mutex_unlock(&priv->conf_mutex);
1941                 return -EOPNOTSUPP;
1942         }
1943
1944         switch (conf->type) {
1945         case NL80211_IFTYPE_STATION:
1946         case NL80211_IFTYPE_ADHOC:
1947         case NL80211_IFTYPE_AP:
1948         case NL80211_IFTYPE_MESH_POINT:
1949                 priv->mode = conf->type;
1950                 break;
1951         default:
1952                 mutex_unlock(&priv->conf_mutex);
1953                 return -EOPNOTSUPP;
1954         }
1955
1956         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1957         p54_setup_mac(dev);
1958         p54_set_leds(dev, 1, 0, 0);
1959         mutex_unlock(&priv->conf_mutex);
1960         return 0;
1961 }
1962
1963 static void p54_remove_interface(struct ieee80211_hw *dev,
1964                                  struct ieee80211_if_init_conf *conf)
1965 {
1966         struct p54_common *priv = dev->priv;
1967
1968         mutex_lock(&priv->conf_mutex);
1969         if (priv->cached_beacon)
1970                 p54_tx_cancel(dev, priv->cached_beacon);
1971         priv->mode = NL80211_IFTYPE_MONITOR;
1972         memset(priv->mac_addr, 0, ETH_ALEN);
1973         memset(priv->bssid, 0, ETH_ALEN);
1974         p54_setup_mac(dev);
1975         mutex_unlock(&priv->conf_mutex);
1976 }
1977
1978 static int p54_config(struct ieee80211_hw *dev, u32 changed)
1979 {
1980         int ret = 0;
1981         struct p54_common *priv = dev->priv;
1982         struct ieee80211_conf *conf = &dev->conf;
1983
1984         mutex_lock(&priv->conf_mutex);
1985         if (changed & IEEE80211_CONF_CHANGE_POWER)
1986                 priv->output_power = conf->power_level << 2;
1987         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
1988                 ret = p54_setup_mac(dev);
1989                 if (ret)
1990                         goto out;
1991         }
1992         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1993                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1994                 if (ret)
1995                         goto out;
1996         }
1997         if (changed & IEEE80211_CONF_CHANGE_PS) {
1998                 ret = p54_set_ps(dev);
1999                 if (ret)
2000                         goto out;
2001         }
2002
2003 out:
2004         mutex_unlock(&priv->conf_mutex);
2005         return ret;
2006 }
2007
2008 static int p54_config_interface(struct ieee80211_hw *dev,
2009                                 struct ieee80211_vif *vif,
2010                                 struct ieee80211_if_conf *conf)
2011 {
2012         struct p54_common *priv = dev->priv;
2013         int ret = 0;
2014
2015         mutex_lock(&priv->conf_mutex);
2016         if (conf->changed & IEEE80211_IFCC_BSSID) {
2017                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2018                 ret = p54_setup_mac(dev);
2019                 if (ret)
2020                         goto out;
2021         }
2022
2023         if (conf->changed & IEEE80211_IFCC_BEACON) {
2024                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2025                 if (ret)
2026                         goto out;
2027                 ret = p54_setup_mac(dev);
2028                 if (ret)
2029                         goto out;
2030                 ret = p54_beacon_update(dev, vif);
2031                 if (ret)
2032                         goto out;
2033                 ret = p54_set_edcf(dev);
2034                 if (ret)
2035                         goto out;
2036         }
2037
2038         ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
2039
2040 out:
2041         mutex_unlock(&priv->conf_mutex);
2042         return ret;
2043 }
2044
2045 static void p54_configure_filter(struct ieee80211_hw *dev,
2046                                  unsigned int changed_flags,
2047                                  unsigned int *total_flags,
2048                                  int mc_count, struct dev_mc_list *mclist)
2049 {
2050         struct p54_common *priv = dev->priv;
2051
2052         *total_flags &= FIF_PROMISC_IN_BSS |
2053                         FIF_OTHER_BSS |
2054                         (*total_flags & FIF_PROMISC_IN_BSS) ?
2055                                 FIF_FCSFAIL : 0;
2056
2057         priv->filter_flags = *total_flags;
2058
2059         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2060                 p54_setup_mac(dev);
2061 }
2062
2063 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2064                        const struct ieee80211_tx_queue_params *params)
2065 {
2066         struct p54_common *priv = dev->priv;
2067         int ret;
2068
2069         mutex_lock(&priv->conf_mutex);
2070         if ((params) && !(queue > 4)) {
2071                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2072                         params->cw_min, params->cw_max, params->txop);
2073                 ret = p54_set_edcf(dev);
2074         } else
2075                 ret = -EINVAL;
2076         mutex_unlock(&priv->conf_mutex);
2077         return ret;
2078 }
2079
2080 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2081 {
2082         struct p54_common *priv = dev->priv;
2083         struct sk_buff *skb;
2084         struct p54_xbow_synth *xbow;
2085
2086         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow) +
2087                             sizeof(struct p54_hdr),
2088                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG,
2089                             GFP_KERNEL);
2090         if (!skb)
2091                 return -ENOMEM;
2092
2093         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2094         xbow->magic1 = cpu_to_le16(0x1);
2095         xbow->magic2 = cpu_to_le16(0x2);
2096         xbow->freq = cpu_to_le16(5390);
2097         memset(xbow->padding, 0, sizeof(xbow->padding));
2098         priv->tx(dev, skb);
2099         return 0;
2100 }
2101
2102 static void p54_work(struct work_struct *work)
2103 {
2104         struct p54_common *priv = container_of(work, struct p54_common,
2105                                                work.work);
2106         struct ieee80211_hw *dev = priv->hw;
2107         struct sk_buff *skb;
2108
2109         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2110                 return ;
2111
2112         /*
2113          * TODO: walk through tx_queue and do the following tasks
2114          *      1. initiate bursts.
2115          *      2. cancel stuck frames / reset the device if necessary.
2116          */
2117
2118         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(struct p54_hdr) +
2119                             sizeof(struct p54_statistics),
2120                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2121         if (!skb)
2122                 return ;
2123
2124         priv->tx(dev, skb);
2125 }
2126
2127 static int p54_get_stats(struct ieee80211_hw *dev,
2128                          struct ieee80211_low_level_stats *stats)
2129 {
2130         struct p54_common *priv = dev->priv;
2131
2132         memcpy(stats, &priv->stats, sizeof(*stats));
2133         return 0;
2134 }
2135
2136 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2137                             struct ieee80211_tx_queue_stats *stats)
2138 {
2139         struct p54_common *priv = dev->priv;
2140
2141         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2142                sizeof(stats[0]) * dev->queues);
2143         return 0;
2144 }
2145
2146 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2147                                  struct ieee80211_vif *vif,
2148                                  struct ieee80211_bss_conf *info,
2149                                  u32 changed)
2150 {
2151         struct p54_common *priv = dev->priv;
2152
2153         if (changed & BSS_CHANGED_ERP_SLOT) {
2154                 priv->use_short_slot = info->use_short_slot;
2155                 p54_set_edcf(dev);
2156         }
2157         if (changed & BSS_CHANGED_BASIC_RATES) {
2158                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2159                         priv->basic_rate_mask = (info->basic_rates << 4);
2160                 else
2161                         priv->basic_rate_mask = info->basic_rates;
2162                 p54_setup_mac(dev);
2163                 if (priv->fw_var >= 0x500)
2164                         p54_scan(dev, P54_SCAN_EXIT, 0);
2165         }
2166         if (changed & BSS_CHANGED_ASSOC) {
2167                 if (info->assoc) {
2168                         priv->aid = info->aid;
2169                         priv->wakeup_timer = info->beacon_int *
2170                                              info->dtim_period * 5;
2171                         p54_setup_mac(dev);
2172                 }
2173         }
2174
2175 }
2176
2177 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2178                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2179                        struct ieee80211_key_conf *key)
2180 {
2181         struct p54_common *priv = dev->priv;
2182         struct sk_buff *skb;
2183         struct p54_keycache *rxkey;
2184         u8 algo = 0;
2185
2186         if (modparam_nohwcrypt)
2187                 return -EOPNOTSUPP;
2188
2189         if (cmd == DISABLE_KEY)
2190                 algo = 0;
2191         else {
2192                 switch (key->alg) {
2193                 case ALG_TKIP:
2194                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2195                               BR_DESC_PRIV_CAP_TKIP)))
2196                                 return -EOPNOTSUPP;
2197                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2198                         algo = P54_CRYPTO_TKIPMICHAEL;
2199                         break;
2200                 case ALG_WEP:
2201                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2202                                 return -EOPNOTSUPP;
2203                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2204                         algo = P54_CRYPTO_WEP;
2205                         break;
2206                 case ALG_CCMP:
2207                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2208                                 return -EOPNOTSUPP;
2209                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2210                         algo = P54_CRYPTO_AESCCMP;
2211                         break;
2212                 default:
2213                         return -EOPNOTSUPP;
2214                 }
2215         }
2216
2217         if (key->keyidx > priv->rx_keycache_size) {
2218                 /*
2219                  * The device supports the choosen algorithm, but the firmware
2220                  * does not provide enough key slots to store all of them.
2221                  * So, incoming frames have to be decoded by the mac80211 stack,
2222                  * but we can still offload encryption for outgoing frames.
2223                  */
2224
2225                 return 0;
2226         }
2227
2228         mutex_lock(&priv->conf_mutex);
2229         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey) +
2230                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_RX_KEYCACHE,
2231                         GFP_ATOMIC);
2232         if (!skb) {
2233                 mutex_unlock(&priv->conf_mutex);
2234                 return -ENOMEM;
2235         }
2236
2237         /* TODO: some devices have 4 more free slots for rx keys */
2238         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2239         rxkey->entry = key->keyidx;
2240         rxkey->key_id = key->keyidx;
2241         rxkey->key_type = algo;
2242         if (sta)
2243                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2244         else
2245                 memset(rxkey->mac, ~0, ETH_ALEN);
2246         if (key->alg != ALG_TKIP) {
2247                 rxkey->key_len = min((u8)16, key->keylen);
2248                 memcpy(rxkey->key, key->key, rxkey->key_len);
2249         } else {
2250                 rxkey->key_len = 24;
2251                 memcpy(rxkey->key, key->key, 16);
2252                 memcpy(&(rxkey->key[16]), &(key->key
2253                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2254         }
2255
2256         priv->tx(dev, skb);
2257         mutex_unlock(&priv->conf_mutex);
2258         return 0;
2259 }
2260
2261 static const struct ieee80211_ops p54_ops = {
2262         .tx                     = p54_tx,
2263         .start                  = p54_start,
2264         .stop                   = p54_stop,
2265         .add_interface          = p54_add_interface,
2266         .remove_interface       = p54_remove_interface,
2267         .set_tim                = p54_set_tim,
2268         .sta_notify             = p54_sta_notify,
2269         .set_key                = p54_set_key,
2270         .config                 = p54_config,
2271         .config_interface       = p54_config_interface,
2272         .bss_info_changed       = p54_bss_info_changed,
2273         .configure_filter       = p54_configure_filter,
2274         .conf_tx                = p54_conf_tx,
2275         .get_stats              = p54_get_stats,
2276         .get_tx_stats           = p54_get_tx_stats
2277 };
2278
2279 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2280 {
2281         struct ieee80211_hw *dev;
2282         struct p54_common *priv;
2283
2284         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2285         if (!dev)
2286                 return NULL;
2287
2288         priv = dev->priv;
2289         priv->hw = dev;
2290         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2291         priv->basic_rate_mask = 0x15f;
2292         skb_queue_head_init(&priv->tx_queue);
2293         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2294                      IEEE80211_HW_SIGNAL_DBM |
2295                      IEEE80211_HW_NOISE_DBM;
2296
2297         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2298                                       BIT(NL80211_IFTYPE_ADHOC) |
2299                                       BIT(NL80211_IFTYPE_AP) |
2300                                       BIT(NL80211_IFTYPE_MESH_POINT);
2301
2302         dev->channel_change_time = 1000;        /* TODO: find actual value */
2303         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2304         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2305         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2306         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2307         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2308         dev->queues = 1;
2309         priv->noise = -94;
2310         /*
2311          * We support at most 8 tries no matter which rate they're at,
2312          * we cannot support max_rates * max_rate_tries as we set it
2313          * here, but setting it correctly to 4/2 or so would limit us
2314          * artificially if the RC algorithm wants just two rates, so
2315          * let's say 4/7, we'll redistribute it at TX time, see the
2316          * comments there.
2317          */
2318         dev->max_rates = 4;
2319         dev->max_rate_tries = 7;
2320         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2321                                  sizeof(struct p54_tx_data);
2322
2323         mutex_init(&priv->conf_mutex);
2324         init_completion(&priv->eeprom_comp);
2325         INIT_DELAYED_WORK(&priv->work, p54_work);
2326
2327         return dev;
2328 }
2329 EXPORT_SYMBOL_GPL(p54_init_common);
2330
2331 void p54_free_common(struct ieee80211_hw *dev)
2332 {
2333         struct p54_common *priv = dev->priv;
2334         kfree(priv->iq_autocal);
2335         kfree(priv->output_limit);
2336         kfree(priv->curve_data);
2337 }
2338 EXPORT_SYMBOL_GPL(p54_free_common);
2339
2340 static int __init p54_init(void)
2341 {
2342         return 0;
2343 }
2344
2345 static void __exit p54_exit(void)
2346 {
2347 }
2348
2349 module_init(p54_init);
2350 module_exit(p54_exit);