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

   1 /*
   2  * EEPROM parser code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007-2009, 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 #include <linux/sort.h>
  23
  24 #include <net/mac80211.h>
  25
  26 #include "p54.h"
  27 #include "eeprom.h"
  28 #include "lmac.h"
  29
  30 static struct ieee80211_rate p54_bgrates[] = {
  31         { .bitrate = 10, .hw_value = 0, },
  32         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  33         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  34         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  35         { .bitrate = 60, .hw_value = 4, },
  36         { .bitrate = 90, .hw_value = 5, },
  37         { .bitrate = 120, .hw_value = 6, },
  38         { .bitrate = 180, .hw_value = 7, },
  39         { .bitrate = 240, .hw_value = 8, },
  40         { .bitrate = 360, .hw_value = 9, },
  41         { .bitrate = 480, .hw_value = 10, },
  42         { .bitrate = 540, .hw_value = 11, },
  43 };
  44
  45 static struct ieee80211_rate p54_arates[] = {
  46         { .bitrate = 60, .hw_value = 4, },
  47         { .bitrate = 90, .hw_value = 5, },
  48         { .bitrate = 120, .hw_value = 6, },
  49         { .bitrate = 180, .hw_value = 7, },
  50         { .bitrate = 240, .hw_value = 8, },
  51         { .bitrate = 360, .hw_value = 9, },
  52         { .bitrate = 480, .hw_value = 10, },
  53         { .bitrate = 540, .hw_value = 11, },
  54 };
  55
  56 #define CHAN_HAS_CAL            BIT(0)
  57 #define CHAN_HAS_LIMIT          BIT(1)
  58 #define CHAN_HAS_CURVE          BIT(2)
  59 #define CHAN_HAS_ALL            (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE)
  60
  61 struct p54_channel_entry {
  62         u16 freq;
  63         u16 data;
  64         int index;
  65         enum ieee80211_band band;
  66 };
  67
  68 struct p54_channel_list {
  69         struct p54_channel_entry *channels;
  70         size_t entries;
  71         size_t max_entries;
  72         size_t band_channel_num[IEEE80211_NUM_BANDS];
  73 };
  74
  75 static int p54_get_band_from_freq(u16 freq)
  76 {
  77         /* FIXME: sync these values with the 802.11 spec */
  78
  79         if ((freq >= 2412) && (freq <= 2484))
  80                 return IEEE80211_BAND_2GHZ;
  81
  82         if ((freq >= 4920) && (freq <= 5825))
  83                 return IEEE80211_BAND_5GHZ;
  84
  85         return -1;
  86 }
  87
  88 static int p54_compare_channels(const void *_a,
  89                                 const void *_b)
  90 {
  91         const struct p54_channel_entry *a = _a;
  92         const struct p54_channel_entry *b = _b;
  93
  94         return a->index - b->index;
  95 }
  96
  97 static int p54_fill_band_bitrates(struct ieee80211_hw *dev,
  98                                   struct ieee80211_supported_band *band_entry,
  99                                   enum ieee80211_band band)
 100 {
 101         /* TODO: generate rate array dynamically */
 102
 103         switch (band) {
 104         case IEEE80211_BAND_2GHZ:
 105                 band_entry->bitrates = p54_bgrates;
 106                 band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates);
 107                 break;
 108         case IEEE80211_BAND_5GHZ:
 109                 band_entry->bitrates = p54_arates;
 110                 band_entry->n_bitrates = ARRAY_SIZE(p54_arates);
 111                 break;
 112         default:
 113                 return -EINVAL;
 114         }
 115
 116         return 0;
 117 }
 118
 119 static int p54_generate_band(struct ieee80211_hw *dev,
 120                              struct p54_channel_list *list,
 121                              enum ieee80211_band band)
 122 {
 123         struct p54_common *priv = dev->priv;
 124         struct ieee80211_supported_band *tmp, *old;
 125         unsigned int i, j;
 126         int ret = -ENOMEM;
 127
 128         if ((!list->entries) || (!list->band_channel_num[band]))
 129                 return 0;
 130
 131         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
 132         if (!tmp)
 133                 goto err_out;
 134
 135         tmp->channels = kzalloc(sizeof(struct ieee80211_channel) *
 136                                 list->band_channel_num[band], GFP_KERNEL);
 137         if (!tmp->channels)
 138                 goto err_out;
 139
 140         ret = p54_fill_band_bitrates(dev, tmp, band);
 141         if (ret)
 142                 goto err_out;
 143
 144         for (i = 0, j = 0; (j < list->band_channel_num[band]) &&
 145                            (i < list->entries); i++) {
 146
 147                 if (list->channels[i].band != band)
 148                         continue;
 149
 150                 if (list->channels[i].data != CHAN_HAS_ALL) {
 151                         printk(KERN_ERR "%s:%s%s%s is/are missing for "
 152                                         "channel:%d [%d MHz].\n",
 153                                wiphy_name(dev->wiphy),
 154                                (list->channels[i].data & CHAN_HAS_CAL ? "" :
 155                                 " [iqauto calibration data]"),
 156                                (list->channels[i].data & CHAN_HAS_LIMIT ? "" :
 157                                 " [output power limits]"),
 158                                (list->channels[i].data & CHAN_HAS_CURVE ? "" :
 159                                 " [curve data]"),
 160                                list->channels[i].index, list->channels[i].freq);
 161                 }
 162
 163                 tmp->channels[j].band = list->channels[i].band;
 164                 tmp->channels[j].center_freq = list->channels[i].freq;
 165                 j++;
 166         }
 167
 168         tmp->n_channels = list->band_channel_num[band];
 169         old = priv->band_table[band];
 170         priv->band_table[band] = tmp;
 171         if (old) {
 172                 kfree(old->channels);
 173                 kfree(old);
 174         }
 175
 176         return 0;
 177
 178 err_out:
 179         if (tmp) {
 180                 kfree(tmp->channels);
 181                 kfree(tmp);
 182         }
 183
 184         return ret;
 185 }
 186
 187 static void p54_update_channel_param(struct p54_channel_list *list,
 188                                      u16 freq, u16 data)
 189 {
 190         int band, i;
 191
 192         /*
 193          * usually all lists in the eeprom are mostly sorted.
 194          * so it's very likely that the entry we are looking for
 195          * is right at the end of the list
 196          */
 197         for (i = list->entries; i >= 0; i--) {
 198                 if (freq == list->channels[i].freq) {
 199                         list->channels[i].data |= data;
 200                         break;
 201                 }
 202         }
 203
 204         if ((i < 0) && (list->entries < list->max_entries)) {
 205                 /* entry does not exist yet. Initialize a new one. */
 206                 band = p54_get_band_from_freq(freq);
 207
 208                 /*
 209                  * filter out frequencies which don't belong into
 210                  * any supported band.
 211                  */
 212                 if (band < 0)
 213                         return ;
 214
 215                 i = list->entries++;
 216                 list->band_channel_num[band]++;
 217
 218                 list->channels[i].freq = freq;
 219                 list->channels[i].data = data;
 220                 list->channels[i].band = band;
 221                 list->channels[i].index = ieee80211_frequency_to_channel(freq);
 222                 /* TODO: parse output_limit and fill max_power */
 223         }
 224 }
 225
 226 static int p54_generate_channel_lists(struct ieee80211_hw *dev)
 227 {
 228         struct p54_common *priv = dev->priv;
 229         struct p54_channel_list *list;
 230         unsigned int i, j, max_channel_num;
 231         int ret = -ENOMEM;
 232         u16 freq;
 233
 234         if ((priv->iq_autocal_len != priv->curve_data->entries) ||
 235             (priv->iq_autocal_len != priv->output_limit->entries))
 236                 printk(KERN_ERR "%s: EEPROM is damaged... you may not be able"
 237                                 "to use all channels with this device.\n",
 238                                 wiphy_name(dev->wiphy));
 239
 240         max_channel_num = max_t(unsigned int, priv->output_limit->entries,
 241                                 priv->iq_autocal_len);
 242         max_channel_num = max_t(unsigned int, max_channel_num,
 243                                 priv->curve_data->entries);
 244
 245         list = kzalloc(sizeof(*list), GFP_KERNEL);
 246         if (!list)
 247                 goto free;
 248
 249         list->max_entries = max_channel_num;
 250         list->channels = kzalloc(sizeof(struct p54_channel_entry) *
 251                                  max_channel_num, GFP_KERNEL);
 252         if (!list->channels)
 253                 goto free;
 254
 255         for (i = 0; i < max_channel_num; i++) {
 256                 if (i < priv->iq_autocal_len) {
 257                         freq = le16_to_cpu(priv->iq_autocal[i].freq);
 258                         p54_update_channel_param(list, freq, CHAN_HAS_CAL);
 259                 }
 260
 261                 if (i < priv->output_limit->entries) {
 262                         freq = le16_to_cpup((__le16 *) (i *
 263                                             priv->output_limit->entry_size +
 264                                             priv->output_limit->offset +
 265                                             priv->output_limit->data));
 266
 267                         p54_update_channel_param(list, freq, CHAN_HAS_LIMIT);
 268                 }
 269
 270                 if (i < priv->curve_data->entries) {
 271                         freq = le16_to_cpup((__le16 *) (i *
 272                                             priv->curve_data->entry_size +
 273                                             priv->curve_data->offset +
 274                                             priv->curve_data->data));
 275
 276                         p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
 277                 }
 278         }
 279
 280         /* sort the list by the channel index */
 281         sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
 282              p54_compare_channels, NULL);
 283
 284         for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) {
 285                 if (list->band_channel_num[i]) {
 286                         ret = p54_generate_band(dev, list, i);
 287                         if (ret)
 288                                 goto free;
 289
 290                         j++;
 291                 }
 292         }
 293         if (j == 0) {
 294                 /* no useable band available. */
 295                 ret = -EINVAL;
 296         }
 297
 298 free:
 299         if (list) {
 300                 kfree(list->channels);
 301                 kfree(list);
 302         }
 303
 304         return ret;
 305 }
 306
 307 static int p54_convert_rev0(struct ieee80211_hw *dev,
 308                             struct pda_pa_curve_data *curve_data)
 309 {
 310         struct p54_common *priv = dev->priv;
 311         struct p54_pa_curve_data_sample *dst;
 312         struct pda_pa_curve_data_sample_rev0 *src;
 313         size_t cd_len = sizeof(*curve_data) +
 314                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 315                  curve_data->channels;
 316         unsigned int i, j;
 317         void *source, *target;
 318
 319         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
 320                                    GFP_KERNEL);
 321         if (!priv->curve_data)
 322                 return -ENOMEM;
 323
 324         priv->curve_data->entries = curve_data->channels;
 325         priv->curve_data->entry_size = sizeof(__le16) +
 326                 sizeof(*dst) * curve_data->points_per_channel;
 327         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 328         priv->curve_data->len = cd_len;
 329         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 330         source = curve_data->data;
 331         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 332         for (i = 0; i < curve_data->channels; i++) {
 333                 __le16 *freq = source;
 334                 source += sizeof(__le16);
 335                 *((__le16 *)target) = *freq;
 336                 target += sizeof(__le16);
 337                 for (j = 0; j < curve_data->points_per_channel; j++) {
 338                         dst = target;
 339                         src = source;
 340
 341                         dst->rf_power = src->rf_power;
 342                         dst->pa_detector = src->pa_detector;
 343                         dst->data_64qam = src->pcv;
 344                         /* "invent" the points for the other modulations */
 345 #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
 346                         dst->data_16qam = SUB(src->pcv, 12);
 347                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 348                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 349                         dst->data_barker = SUB(dst->data_bpsk, 14);
 350 #undef SUB
 351                         target += sizeof(*dst);
 352                         source += sizeof(*src);
 353                 }
 354         }
 355
 356         return 0;
 357 }
 358
 359 static int p54_convert_rev1(struct ieee80211_hw *dev,
 360                             struct pda_pa_curve_data *curve_data)
 361 {
 362         struct p54_common *priv = dev->priv;
 363         struct p54_pa_curve_data_sample *dst;
 364         struct pda_pa_curve_data_sample_rev1 *src;
 365         size_t cd_len = sizeof(*curve_data) +
 366                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 367                  curve_data->channels;
 368         unsigned int i, j;
 369         void *source, *target;
 370
 371         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
 372                                    GFP_KERNEL);
 373         if (!priv->curve_data)
 374                 return -ENOMEM;
 375
 376         priv->curve_data->entries = curve_data->channels;
 377         priv->curve_data->entry_size = sizeof(__le16) +
 378                 sizeof(*dst) * curve_data->points_per_channel;
 379         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 380         priv->curve_data->len = cd_len;
 381         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 382         source = curve_data->data;
 383         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 384         for (i = 0; i < curve_data->channels; i++) {
 385                 __le16 *freq = source;
 386                 source += sizeof(__le16);
 387                 *((__le16 *)target) = *freq;
 388                 target += sizeof(__le16);
 389                 for (j = 0; j < curve_data->points_per_channel; j++) {
 390                         memcpy(target, source, sizeof(*src));
 391
 392                         target += sizeof(*dst);
 393                         source += sizeof(*src);
 394                 }
 395                 source++;
 396         }
 397
 398         return 0;
 399 }
 400
 401 static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
 402         "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
 403
 404 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 405                              u16 type)
 406 {
 407         struct p54_common *priv = dev->priv;
 408         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 409         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 410         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 411         int i;
 412
 413         if (len != (entry_size * num_entries)) {
 414                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 415                                  " type:(%x) len:%d.\n",
 416                        wiphy_name(dev->wiphy), type, len);
 417
 418                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 419                                      data, len);
 420
 421                 printk(KERN_ERR "%s: please report this issue.\n",
 422                         wiphy_name(dev->wiphy));
 423                 return;
 424         }
 425
 426         for (i = 0; i < num_entries; i++) {
 427                 struct pda_rssi_cal_entry *cal = data +
 428                                                  (offset + i * entry_size);
 429                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 430                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 431         }
 432 }
 433
 434 static void p54_parse_default_country(struct ieee80211_hw *dev,
 435                                       void *data, int len)
 436 {
 437         struct pda_country *country;
 438
 439         if (len != sizeof(*country)) {
 440                 printk(KERN_ERR "%s: found possible invalid default country "
 441                                 "eeprom entry. (entry size: %d)\n",
 442                        wiphy_name(dev->wiphy), len);
 443
 444                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 445                                      data, len);
 446
 447                 printk(KERN_ERR "%s: please report this issue.\n",
 448                         wiphy_name(dev->wiphy));
 449                 return;
 450         }
 451
 452         country = (struct pda_country *) data;
 453         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 454                 regulatory_hint(dev->wiphy, country->alpha2);
 455         else {
 456                 /* TODO:
 457                  * write a shared/common function that converts
 458                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 459                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 460                  */
 461         }
 462 }
 463
 464 static int p54_convert_output_limits(struct ieee80211_hw *dev,
 465                                      u8 *data, size_t len)
 466 {
 467         struct p54_common *priv = dev->priv;
 468
 469         if (len < 2)
 470                 return -EINVAL;
 471
 472         if (data[0] != 0) {
 473                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
 474                        wiphy_name(dev->wiphy), data[0]);
 475                 return -EINVAL;
 476         }
 477
 478         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
 479                 return -EINVAL;
 480
 481         priv->output_limit = kmalloc(data[1] *
 482                 sizeof(struct pda_channel_output_limit) +
 483                 sizeof(*priv->output_limit), GFP_KERNEL);
 484
 485         if (!priv->output_limit)
 486                 return -ENOMEM;
 487
 488         priv->output_limit->offset = 0;
 489         priv->output_limit->entries = data[1];
 490         priv->output_limit->entry_size =
 491                 sizeof(struct pda_channel_output_limit);
 492         priv->output_limit->len = priv->output_limit->entry_size *
 493                                   priv->output_limit->entries +
 494                                   priv->output_limit->offset;
 495
 496         memcpy(priv->output_limit->data, &data[2],
 497                data[1] * sizeof(struct pda_channel_output_limit));
 498
 499         return 0;
 500 }
 501
 502 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
 503                                                size_t total_len)
 504 {
 505         struct p54_cal_database *dst;
 506         size_t payload_len, entries, entry_size, offset;
 507
 508         payload_len = le16_to_cpu(src->len);
 509         entries = le16_to_cpu(src->entries);
 510         entry_size = le16_to_cpu(src->entry_size);
 511         offset = le16_to_cpu(src->offset);
 512         if (((entries * entry_size + offset) != payload_len) ||
 513              (payload_len + sizeof(*src) != total_len))
 514                 return NULL;
 515
 516         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
 517         if (!dst)
 518                 return NULL;
 519
 520         dst->entries = entries;
 521         dst->entry_size = entry_size;
 522         dst->offset = offset;
 523         dst->len = payload_len;
 524
 525         memcpy(dst->data, src->data, payload_len);
 526         return dst;
 527 }
 528
 529 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 530 {
 531         struct p54_common *priv = dev->priv;
 532         struct eeprom_pda_wrap *wrap = NULL;
 533         struct pda_entry *entry;
 534         unsigned int data_len, entry_len;
 535         void *tmp;
 536         int err;
 537         u8 *end = (u8 *)eeprom + len;
 538         u16 synth = 0;
 539
 540         wrap = (struct eeprom_pda_wrap *) eeprom;
 541         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 542
 543         /* verify that at least the entry length/code fits */
 544         while ((u8 *)entry <= end - sizeof(*entry)) {
 545                 entry_len = le16_to_cpu(entry->len);
 546                 data_len = ((entry_len - 1) << 1);
 547
 548                 /* abort if entry exceeds whole structure */
 549                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 550                         break;
 551
 552                 switch (le16_to_cpu(entry->code)) {
 553                 case PDR_MAC_ADDRESS:
 554                         if (data_len != ETH_ALEN)
 555                                 break;
 556                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 557                         break;
 558                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 559                         if (priv->output_limit)
 560                                 break;
 561                         err = p54_convert_output_limits(dev, entry->data,
 562                                                         data_len);
 563                         if (err)
 564                                 goto err;
 565                         break;
 566                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 567                         struct pda_pa_curve_data *curve_data =
 568                                 (struct pda_pa_curve_data *)entry->data;
 569                         if (data_len < sizeof(*curve_data)) {
 570                                 err = -EINVAL;
 571                                 goto err;
 572                         }
 573
 574                         switch (curve_data->cal_method_rev) {
 575                         case 0:
 576                                 err = p54_convert_rev0(dev, curve_data);
 577                                 break;
 578                         case 1:
 579                                 err = p54_convert_rev1(dev, curve_data);
 580                                 break;
 581                         default:
 582                                 printk(KERN_ERR "%s: unknown curve data "
 583                                                 "revision %d\n",
 584                                                 wiphy_name(dev->wiphy),
 585                                                 curve_data->cal_method_rev);
 586                                 err = -ENODEV;
 587                                 break;
 588                         }
 589                         if (err)
 590                                 goto err;
 591                         }
 592                         break;
 593                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 594                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 595                         if (!priv->iq_autocal) {
 596                                 err = -ENOMEM;
 597                                 goto err;
 598                         }
 599
 600                         memcpy(priv->iq_autocal, entry->data, data_len);
 601                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 602                         break;
 603                 case PDR_DEFAULT_COUNTRY:
 604                         p54_parse_default_country(dev, entry->data, data_len);
 605                         break;
 606                 case PDR_INTERFACE_LIST:
 607                         tmp = entry->data;
 608                         while ((u8 *)tmp < entry->data + data_len) {
 609                                 struct exp_if *exp_if = tmp;
 610                                 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))
 611                                         synth = le16_to_cpu(exp_if->variant);
 612                                 tmp += sizeof(*exp_if);
 613                         }
 614                         break;
 615                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 616                         if (data_len < 2)
 617                                 break;
 618                         priv->version = *(u8 *)(entry->data + 1);
 619                         break;
 620                 case PDR_RSSI_LINEAR_APPROXIMATION:
 621                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 622                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 623                         p54_parse_rssical(dev, entry->data, data_len,
 624                                           le16_to_cpu(entry->code));
 625                         break;
 626                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
 627                         __le16 *src = (void *) entry->data;
 628                         s16 *dst = (void *) &priv->rssical_db;
 629                         int i;
 630
 631                         if (data_len != sizeof(priv->rssical_db)) {
 632                                 err = -EINVAL;
 633                                 goto err;
 634                         }
 635                         for (i = 0; i < sizeof(priv->rssical_db) /
 636                                         sizeof(*src); i++)
 637                                 *(dst++) = (s16) le16_to_cpu(*(src++));
 638                         }
 639                         break;
 640                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
 641                         struct pda_custom_wrapper *pda = (void *) entry->data;
 642                         if (priv->output_limit || data_len < sizeof(*pda))
 643                                 break;
 644                         priv->output_limit = p54_convert_db(pda, data_len);
 645                         }
 646                         break;
 647                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
 648                         struct pda_custom_wrapper *pda = (void *) entry->data;
 649                         if (priv->curve_data || data_len < sizeof(*pda))
 650                                 break;
 651                         priv->curve_data = p54_convert_db(pda, data_len);
 652                         }
 653                         break;
 654                 case PDR_END:
 655                         /* make it overrun */
 656                         entry_len = len;
 657                         break;
 658                 default:
 659                         break;
 660                 }
 661
 662                 entry = (void *)entry + (entry_len + 1)*2;
 663         }
 664
 665         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 666             !priv->curve_data) {
 667                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 668                         wiphy_name(dev->wiphy));
 669                 err = -EINVAL;
 670                 goto err;
 671         }
 672
 673         err = p54_generate_channel_lists(dev);
 674         if (err)
 675                 goto err;
 676
 677         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 678         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
 679                 p54_init_xbow_synth(priv);
 680         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 681                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] =
 682                         priv->band_table[IEEE80211_BAND_2GHZ];
 683         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 684                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] =
 685                         priv->band_table[IEEE80211_BAND_5GHZ];
 686         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 687                 priv->rx_diversity_mask = 3;
 688         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 689                 priv->tx_diversity_mask = 3;
 690
 691         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 692                 u8 perm_addr[ETH_ALEN];
 693
 694                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 695                         wiphy_name(dev->wiphy));
 696                 random_ether_addr(perm_addr);
 697                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 698         }
 699
 700         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 701                 wiphy_name(dev->wiphy), dev->wiphy->perm_addr, priv->version,
 702                 p54_rf_chips[priv->rxhw]);
 703
 704         return 0;
 705
 706 err:
 707         kfree(priv->iq_autocal);
 708         kfree(priv->output_limit);
 709         kfree(priv->curve_data);
 710         priv->iq_autocal = NULL;
 711         priv->output_limit = NULL;
 712         priv->curve_data = NULL;
 713
 714         printk(KERN_ERR "%s: eeprom parse failed!\n",
 715                 wiphy_name(dev->wiphy));
 716         return err;
 717 }
 718 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 719
 720 int p54_read_eeprom(struct ieee80211_hw *dev)
 721 {
 722         struct p54_common *priv = dev->priv;
 723         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
 724         int ret = -ENOMEM;
 725         void *eeprom = NULL;
 726
 727         maxblocksize = EEPROM_READBACK_LEN;
 728         if (priv->fw_var >= 0x509)
 729                 maxblocksize -= 0xc;
 730         else
 731                 maxblocksize -= 0x4;
 732
 733         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
 734         if (unlikely(!eeprom))
 735                 goto free;
 736
 737         while (eeprom_size) {
 738                 blocksize = min(eeprom_size, maxblocksize);
 739                 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
 740                                           offset, blocksize);
 741                 if (unlikely(ret))
 742                         goto free;
 743
 744                 offset += blocksize;
 745                 eeprom_size -= blocksize;
 746         }
 747
 748         ret = p54_parse_eeprom(dev, eeprom, offset);
 749 free:
 750         kfree(eeprom);
 751         return ret;
 752 }
 753 EXPORT_SYMBOL_GPL(p54_read_eeprom);