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 #include <linux/slab.h>
  24
  25 #include <net/mac80211.h>
  26
  27 #include "p54.h"
  28 #include "eeprom.h"
  29 #include "lmac.h"
  30
  31 static struct ieee80211_rate p54_bgrates[] = {
  32         { .bitrate = 10, .hw_value = 0, },
  33         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  34         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  35         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  36         { .bitrate = 60, .hw_value = 4, },
  37         { .bitrate = 90, .hw_value = 5, },
  38         { .bitrate = 120, .hw_value = 6, },
  39         { .bitrate = 180, .hw_value = 7, },
  40         { .bitrate = 240, .hw_value = 8, },
  41         { .bitrate = 360, .hw_value = 9, },
  42         { .bitrate = 480, .hw_value = 10, },
  43         { .bitrate = 540, .hw_value = 11, },
  44 };
  45
  46 static struct ieee80211_rate p54_arates[] = {
  47         { .bitrate = 60, .hw_value = 4, },
  48         { .bitrate = 90, .hw_value = 5, },
  49         { .bitrate = 120, .hw_value = 6, },
  50         { .bitrate = 180, .hw_value = 7, },
  51         { .bitrate = 240, .hw_value = 8, },
  52         { .bitrate = 360, .hw_value = 9, },
  53         { .bitrate = 480, .hw_value = 10, },
  54         { .bitrate = 540, .hw_value = 11, },
  55 };
  56
  57 #define CHAN_HAS_CAL            BIT(0)
  58 #define CHAN_HAS_LIMIT          BIT(1)
  59 #define CHAN_HAS_CURVE          BIT(2)
  60 #define CHAN_HAS_ALL            (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE)
  61
  62 struct p54_channel_entry {
  63         u16 freq;
  64         u16 data;
  65         int index;
  66         enum ieee80211_band band;
  67 };
  68
  69 struct p54_channel_list {
  70         struct p54_channel_entry *channels;
  71         size_t entries;
  72         size_t max_entries;
  73         size_t band_channel_num[IEEE80211_NUM_BANDS];
  74 };
  75
  76 static int p54_get_band_from_freq(u16 freq)
  77 {
  78         /* FIXME: sync these values with the 802.11 spec */
  79
  80         if ((freq >= 2412) && (freq <= 2484))
  81                 return IEEE80211_BAND_2GHZ;
  82
  83         if ((freq >= 4920) && (freq <= 5825))
  84                 return IEEE80211_BAND_5GHZ;
  85
  86         return -1;
  87 }
  88
  89 static int p54_compare_channels(const void *_a,
  90                                 const void *_b)
  91 {
  92         const struct p54_channel_entry *a = _a;
  93         const struct p54_channel_entry *b = _b;
  94
  95         return a->index - b->index;
  96 }
  97
  98 static int p54_fill_band_bitrates(struct ieee80211_hw *dev,
  99                                   struct ieee80211_supported_band *band_entry,
 100                                   enum ieee80211_band band)
 101 {
 102         /* TODO: generate rate array dynamically */
 103
 104         switch (band) {
 105         case IEEE80211_BAND_2GHZ:
 106                 band_entry->bitrates = p54_bgrates;
 107                 band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates);
 108                 break;
 109         case IEEE80211_BAND_5GHZ:
 110                 band_entry->bitrates = p54_arates;
 111                 band_entry->n_bitrates = ARRAY_SIZE(p54_arates);
 112                 break;
 113         default:
 114                 return -EINVAL;
 115         }
 116
 117         return 0;
 118 }
 119
 120 static int p54_generate_band(struct ieee80211_hw *dev,
 121                              struct p54_channel_list *list,
 122                              enum ieee80211_band band)
 123 {
 124         struct p54_common *priv = dev->priv;
 125         struct ieee80211_supported_band *tmp, *old;
 126         unsigned int i, j;
 127         int ret = -ENOMEM;
 128
 129         if ((!list->entries) || (!list->band_channel_num[band]))
 130                 return -EINVAL;
 131
 132         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
 133         if (!tmp)
 134                 goto err_out;
 135
 136         tmp->channels = kzalloc(sizeof(struct ieee80211_channel) *
 137                                 list->band_channel_num[band], GFP_KERNEL);
 138         if (!tmp->channels)
 139                 goto err_out;
 140
 141         ret = p54_fill_band_bitrates(dev, tmp, band);
 142         if (ret)
 143                 goto err_out;
 144
 145         for (i = 0, j = 0; (j < list->band_channel_num[band]) &&
 146                            (i < list->entries); i++) {
 147
 148                 if (list->channels[i].band != band)
 149                         continue;
 150
 151                 if (list->channels[i].data != CHAN_HAS_ALL) {
 152                         printk(KERN_ERR "%s:%s%s%s is/are missing for "
 153                                         "channel:%d [%d MHz].\n",
 154                                wiphy_name(dev->wiphy),
 155                                (list->channels[i].data & CHAN_HAS_CAL ? "" :
 156                                 " [iqauto calibration data]"),
 157                                (list->channels[i].data & CHAN_HAS_LIMIT ? "" :
 158                                 " [output power limits]"),
 159                                (list->channels[i].data & CHAN_HAS_CURVE ? "" :
 160                                 " [curve data]"),
 161                                list->channels[i].index, list->channels[i].freq);
 162                         continue;
 163                 }
 164
 165                 tmp->channels[j].band = list->channels[i].band;
 166                 tmp->channels[j].center_freq = list->channels[i].freq;
 167                 j++;
 168         }
 169
 170         if (j == 0) {
 171                 printk(KERN_ERR "%s: Disabling totally damaged %s band.\n",
 172                        wiphy_name(dev->wiphy), (band == IEEE80211_BAND_2GHZ) ?
 173                        "2 GHz" : "5 GHz");
 174
 175                 ret = -ENODATA;
 176                 goto err_out;
 177         }
 178
 179         tmp->n_channels = j;
 180         old = priv->band_table[band];
 181         priv->band_table[band] = tmp;
 182         if (old) {
 183                 kfree(old->channels);
 184                 kfree(old);
 185         }
 186
 187         return 0;
 188
 189 err_out:
 190         if (tmp) {
 191                 kfree(tmp->channels);
 192                 kfree(tmp);
 193         }
 194
 195         return ret;
 196 }
 197
 198 static void p54_update_channel_param(struct p54_channel_list *list,
 199                                      u16 freq, u16 data)
 200 {
 201         int band, i;
 202
 203         /*
 204          * usually all lists in the eeprom are mostly sorted.
 205          * so it's very likely that the entry we are looking for
 206          * is right at the end of the list
 207          */
 208         for (i = list->entries; i >= 0; i--) {
 209                 if (freq == list->channels[i].freq) {
 210                         list->channels[i].data |= data;
 211                         break;
 212                 }
 213         }
 214
 215         if ((i < 0) && (list->entries < list->max_entries)) {
 216                 /* entry does not exist yet. Initialize a new one. */
 217                 band = p54_get_band_from_freq(freq);
 218
 219                 /*
 220                  * filter out frequencies which don't belong into
 221                  * any supported band.
 222                  */
 223                 if (band < 0)
 224                         return ;
 225
 226                 i = list->entries++;
 227                 list->band_channel_num[band]++;
 228
 229                 list->channels[i].freq = freq;
 230                 list->channels[i].data = data;
 231                 list->channels[i].band = band;
 232                 list->channels[i].index = ieee80211_frequency_to_channel(freq);
 233                 /* TODO: parse output_limit and fill max_power */
 234         }
 235 }
 236
 237 static int p54_generate_channel_lists(struct ieee80211_hw *dev)
 238 {
 239         struct p54_common *priv = dev->priv;
 240         struct p54_channel_list *list;
 241         unsigned int i, j, max_channel_num;
 242         int ret = 0;
 243         u16 freq;
 244
 245         if ((priv->iq_autocal_len != priv->curve_data->entries) ||
 246             (priv->iq_autocal_len != priv->output_limit->entries))
 247                 printk(KERN_ERR "%s: Unsupported or damaged EEPROM detected. "
 248                                 "You may not be able to use all channels.\n",
 249                                 wiphy_name(dev->wiphy));
 250
 251         max_channel_num = max_t(unsigned int, priv->output_limit->entries,
 252                                 priv->iq_autocal_len);
 253         max_channel_num = max_t(unsigned int, max_channel_num,
 254                                 priv->curve_data->entries);
 255
 256         list = kzalloc(sizeof(*list), GFP_KERNEL);
 257         if (!list) {
 258                 ret = -ENOMEM;
 259                 goto free;
 260         }
 261
 262         list->max_entries = max_channel_num;
 263         list->channels = kzalloc(sizeof(struct p54_channel_entry) *
 264                                  max_channel_num, GFP_KERNEL);
 265         if (!list->channels)
 266                 goto free;
 267
 268         for (i = 0; i < max_channel_num; i++) {
 269                 if (i < priv->iq_autocal_len) {
 270                         freq = le16_to_cpu(priv->iq_autocal[i].freq);
 271                         p54_update_channel_param(list, freq, CHAN_HAS_CAL);
 272                 }
 273
 274                 if (i < priv->output_limit->entries) {
 275                         freq = le16_to_cpup((__le16 *) (i *
 276                                             priv->output_limit->entry_size +
 277                                             priv->output_limit->offset +
 278                                             priv->output_limit->data));
 279
 280                         p54_update_channel_param(list, freq, CHAN_HAS_LIMIT);
 281                 }
 282
 283                 if (i < priv->curve_data->entries) {
 284                         freq = le16_to_cpup((__le16 *) (i *
 285                                             priv->curve_data->entry_size +
 286                                             priv->curve_data->offset +
 287                                             priv->curve_data->data));
 288
 289                         p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
 290                 }
 291         }
 292
 293         /* sort the list by the channel index */
 294         sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
 295              p54_compare_channels, NULL);
 296
 297         for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) {
 298                 if (p54_generate_band(dev, list, i) == 0)
 299                         j++;
 300         }
 301         if (j == 0) {
 302                 /* no useable band available. */
 303                 ret = -EINVAL;
 304         }
 305
 306 free:
 307         if (list) {
 308                 kfree(list->channels);
 309                 kfree(list);
 310         }
 311
 312         return ret;
 313 }
 314
 315 static int p54_convert_rev0(struct ieee80211_hw *dev,
 316                             struct pda_pa_curve_data *curve_data)
 317 {
 318         struct p54_common *priv = dev->priv;
 319         struct p54_pa_curve_data_sample *dst;
 320         struct pda_pa_curve_data_sample_rev0 *src;
 321         size_t cd_len = sizeof(*curve_data) +
 322                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 323                  curve_data->channels;
 324         unsigned int i, j;
 325         void *source, *target;
 326
 327         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
 328                                    GFP_KERNEL);
 329         if (!priv->curve_data)
 330                 return -ENOMEM;
 331
 332         priv->curve_data->entries = curve_data->channels;
 333         priv->curve_data->entry_size = sizeof(__le16) +
 334                 sizeof(*dst) * curve_data->points_per_channel;
 335         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 336         priv->curve_data->len = cd_len;
 337         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 338         source = curve_data->data;
 339         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 340         for (i = 0; i < curve_data->channels; i++) {
 341                 __le16 *freq = source;
 342                 source += sizeof(__le16);
 343                 *((__le16 *)target) = *freq;
 344                 target += sizeof(__le16);
 345                 for (j = 0; j < curve_data->points_per_channel; j++) {
 346                         dst = target;
 347                         src = source;
 348
 349                         dst->rf_power = src->rf_power;
 350                         dst->pa_detector = src->pa_detector;
 351                         dst->data_64qam = src->pcv;
 352                         /* "invent" the points for the other modulations */
 353 #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
 354                         dst->data_16qam = SUB(src->pcv, 12);
 355                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 356                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 357                         dst->data_barker = SUB(dst->data_bpsk, 14);
 358 #undef SUB
 359                         target += sizeof(*dst);
 360                         source += sizeof(*src);
 361                 }
 362         }
 363
 364         return 0;
 365 }
 366
 367 static int p54_convert_rev1(struct ieee80211_hw *dev,
 368                             struct pda_pa_curve_data *curve_data)
 369 {
 370         struct p54_common *priv = dev->priv;
 371         struct p54_pa_curve_data_sample *dst;
 372         struct pda_pa_curve_data_sample_rev1 *src;
 373         size_t cd_len = sizeof(*curve_data) +
 374                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 375                  curve_data->channels;
 376         unsigned int i, j;
 377         void *source, *target;
 378
 379         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
 380                                    GFP_KERNEL);
 381         if (!priv->curve_data)
 382                 return -ENOMEM;
 383
 384         priv->curve_data->entries = curve_data->channels;
 385         priv->curve_data->entry_size = sizeof(__le16) +
 386                 sizeof(*dst) * curve_data->points_per_channel;
 387         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 388         priv->curve_data->len = cd_len;
 389         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 390         source = curve_data->data;
 391         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 392         for (i = 0; i < curve_data->channels; i++) {
 393                 __le16 *freq = source;
 394                 source += sizeof(__le16);
 395                 *((__le16 *)target) = *freq;
 396                 target += sizeof(__le16);
 397                 for (j = 0; j < curve_data->points_per_channel; j++) {
 398                         memcpy(target, source, sizeof(*src));
 399
 400                         target += sizeof(*dst);
 401                         source += sizeof(*src);
 402                 }
 403                 source++;
 404         }
 405
 406         return 0;
 407 }
 408
 409 static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
 410         "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
 411
 412 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 413                              u16 type)
 414 {
 415         struct p54_common *priv = dev->priv;
 416         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 417         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 418         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 419         int i;
 420
 421         if (len != (entry_size * num_entries)) {
 422                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 423                                  " type:(%x) len:%d.\n",
 424                        wiphy_name(dev->wiphy), type, len);
 425
 426                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 427                                      data, len);
 428
 429                 printk(KERN_ERR "%s: please report this issue.\n",
 430                         wiphy_name(dev->wiphy));
 431                 return;
 432         }
 433
 434         for (i = 0; i < num_entries; i++) {
 435                 struct pda_rssi_cal_entry *cal = data +
 436                                                  (offset + i * entry_size);
 437                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 438                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 439         }
 440 }
 441
 442 static void p54_parse_default_country(struct ieee80211_hw *dev,
 443                                       void *data, int len)
 444 {
 445         struct pda_country *country;
 446
 447         if (len != sizeof(*country)) {
 448                 printk(KERN_ERR "%s: found possible invalid default country "
 449                                 "eeprom entry. (entry size: %d)\n",
 450                        wiphy_name(dev->wiphy), len);
 451
 452                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 453                                      data, len);
 454
 455                 printk(KERN_ERR "%s: please report this issue.\n",
 456                         wiphy_name(dev->wiphy));
 457                 return;
 458         }
 459
 460         country = (struct pda_country *) data;
 461         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 462                 regulatory_hint(dev->wiphy, country->alpha2);
 463         else {
 464                 /* TODO:
 465                  * write a shared/common function that converts
 466                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 467                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 468                  */
 469         }
 470 }
 471
 472 static int p54_convert_output_limits(struct ieee80211_hw *dev,
 473                                      u8 *data, size_t len)
 474 {
 475         struct p54_common *priv = dev->priv;
 476
 477         if (len < 2)
 478                 return -EINVAL;
 479
 480         if (data[0] != 0) {
 481                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
 482                        wiphy_name(dev->wiphy), data[0]);
 483                 return -EINVAL;
 484         }
 485
 486         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
 487                 return -EINVAL;
 488
 489         priv->output_limit = kmalloc(data[1] *
 490                 sizeof(struct pda_channel_output_limit) +
 491                 sizeof(*priv->output_limit), GFP_KERNEL);
 492
 493         if (!priv->output_limit)
 494                 return -ENOMEM;
 495
 496         priv->output_limit->offset = 0;
 497         priv->output_limit->entries = data[1];
 498         priv->output_limit->entry_size =
 499                 sizeof(struct pda_channel_output_limit);
 500         priv->output_limit->len = priv->output_limit->entry_size *
 501                                   priv->output_limit->entries +
 502                                   priv->output_limit->offset;
 503
 504         memcpy(priv->output_limit->data, &data[2],
 505                data[1] * sizeof(struct pda_channel_output_limit));
 506
 507         return 0;
 508 }
 509
 510 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
 511                                                size_t total_len)
 512 {
 513         struct p54_cal_database *dst;
 514         size_t payload_len, entries, entry_size, offset;
 515
 516         payload_len = le16_to_cpu(src->len);
 517         entries = le16_to_cpu(src->entries);
 518         entry_size = le16_to_cpu(src->entry_size);
 519         offset = le16_to_cpu(src->offset);
 520         if (((entries * entry_size + offset) != payload_len) ||
 521              (payload_len + sizeof(*src) != total_len))
 522                 return NULL;
 523
 524         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
 525         if (!dst)
 526                 return NULL;
 527
 528         dst->entries = entries;
 529         dst->entry_size = entry_size;
 530         dst->offset = offset;
 531         dst->len = payload_len;
 532
 533         memcpy(dst->data, src->data, payload_len);
 534         return dst;
 535 }
 536
 537 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 538 {
 539         struct p54_common *priv = dev->priv;
 540         struct eeprom_pda_wrap *wrap;
 541         struct pda_entry *entry;
 542         unsigned int data_len, entry_len;
 543         void *tmp;
 544         int err;
 545         u8 *end = (u8 *)eeprom + len;
 546         u16 synth = 0;
 547
 548         wrap = (struct eeprom_pda_wrap *) eeprom;
 549         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 550
 551         /* verify that at least the entry length/code fits */
 552         while ((u8 *)entry <= end - sizeof(*entry)) {
 553                 entry_len = le16_to_cpu(entry->len);
 554                 data_len = ((entry_len - 1) << 1);
 555
 556                 /* abort if entry exceeds whole structure */
 557                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 558                         break;
 559
 560                 switch (le16_to_cpu(entry->code)) {
 561                 case PDR_MAC_ADDRESS:
 562                         if (data_len != ETH_ALEN)
 563                                 break;
 564                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 565                         break;
 566                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 567                         if (priv->output_limit)
 568                                 break;
 569                         err = p54_convert_output_limits(dev, entry->data,
 570                                                         data_len);
 571                         if (err)
 572                                 goto err;
 573                         break;
 574                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 575                         struct pda_pa_curve_data *curve_data =
 576                                 (struct pda_pa_curve_data *)entry->data;
 577                         if (data_len < sizeof(*curve_data)) {
 578                                 err = -EINVAL;
 579                                 goto err;
 580                         }
 581
 582                         switch (curve_data->cal_method_rev) {
 583                         case 0:
 584                                 err = p54_convert_rev0(dev, curve_data);
 585                                 break;
 586                         case 1:
 587                                 err = p54_convert_rev1(dev, curve_data);
 588                                 break;
 589                         default:
 590                                 printk(KERN_ERR "%s: unknown curve data "
 591                                                 "revision %d\n",
 592                                                 wiphy_name(dev->wiphy),
 593                                                 curve_data->cal_method_rev);
 594                                 err = -ENODEV;
 595                                 break;
 596                         }
 597                         if (err)
 598                                 goto err;
 599                         }
 600                         break;
 601                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 602                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 603                         if (!priv->iq_autocal) {
 604                                 err = -ENOMEM;
 605                                 goto err;
 606                         }
 607
 608                         memcpy(priv->iq_autocal, entry->data, data_len);
 609                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 610                         break;
 611                 case PDR_DEFAULT_COUNTRY:
 612                         p54_parse_default_country(dev, entry->data, data_len);
 613                         break;
 614                 case PDR_INTERFACE_LIST:
 615                         tmp = entry->data;
 616                         while ((u8 *)tmp < entry->data + data_len) {
 617                                 struct exp_if *exp_if = tmp;
 618                                 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))
 619                                         synth = le16_to_cpu(exp_if->variant);
 620                                 tmp += sizeof(*exp_if);
 621                         }
 622                         break;
 623                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 624                         if (data_len < 2)
 625                                 break;
 626                         priv->version = *(u8 *)(entry->data + 1);
 627                         break;
 628                 case PDR_RSSI_LINEAR_APPROXIMATION:
 629                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 630                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 631                         p54_parse_rssical(dev, entry->data, data_len,
 632                                           le16_to_cpu(entry->code));
 633                         break;
 634                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
 635                         __le16 *src = (void *) entry->data;
 636                         s16 *dst = (void *) &priv->rssical_db;
 637                         int i;
 638
 639                         if (data_len != sizeof(priv->rssical_db)) {
 640                                 err = -EINVAL;
 641                                 goto err;
 642                         }
 643                         for (i = 0; i < sizeof(priv->rssical_db) /
 644                                         sizeof(*src); i++)
 645                                 *(dst++) = (s16) le16_to_cpu(*(src++));
 646                         }
 647                         break;
 648                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
 649                         struct pda_custom_wrapper *pda = (void *) entry->data;
 650                         if (priv->output_limit || data_len < sizeof(*pda))
 651                                 break;
 652                         priv->output_limit = p54_convert_db(pda, data_len);
 653                         }
 654                         break;
 655                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
 656                         struct pda_custom_wrapper *pda = (void *) entry->data;
 657                         if (priv->curve_data || data_len < sizeof(*pda))
 658                                 break;
 659                         priv->curve_data = p54_convert_db(pda, data_len);
 660                         }
 661                         break;
 662                 case PDR_END:
 663                         /* make it overrun */
 664                         entry_len = len;
 665                         break;
 666                 default:
 667                         break;
 668                 }
 669
 670                 entry = (void *)entry + (entry_len + 1)*2;
 671         }
 672
 673         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 674             !priv->curve_data) {
 675                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 676                         wiphy_name(dev->wiphy));
 677                 err = -EINVAL;
 678                 goto err;
 679         }
 680
 681         err = p54_generate_channel_lists(dev);
 682         if (err)
 683                 goto err;
 684
 685         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 686         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
 687                 p54_init_xbow_synth(priv);
 688         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 689                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] =
 690                         priv->band_table[IEEE80211_BAND_2GHZ];
 691         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 692                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] =
 693                         priv->band_table[IEEE80211_BAND_5GHZ];
 694         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 695                 priv->rx_diversity_mask = 3;
 696         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 697                 priv->tx_diversity_mask = 3;
 698
 699         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 700                 u8 perm_addr[ETH_ALEN];
 701
 702                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 703                         wiphy_name(dev->wiphy));
 704                 random_ether_addr(perm_addr);
 705                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 706         }
 707
 708         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 709                 wiphy_name(dev->wiphy), dev->wiphy->perm_addr, priv->version,
 710                 p54_rf_chips[priv->rxhw]);
 711
 712         return 0;
 713
 714 err:
 715         kfree(priv->iq_autocal);
 716         kfree(priv->output_limit);
 717         kfree(priv->curve_data);
 718         priv->iq_autocal = NULL;
 719         priv->output_limit = NULL;
 720         priv->curve_data = NULL;
 721
 722         printk(KERN_ERR "%s: eeprom parse failed!\n",
 723                 wiphy_name(dev->wiphy));
 724         return err;
 725 }
 726 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 727
 728 int p54_read_eeprom(struct ieee80211_hw *dev)
 729 {
 730         struct p54_common *priv = dev->priv;
 731         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
 732         int ret = -ENOMEM;
 733         void *eeprom;
 734
 735         maxblocksize = EEPROM_READBACK_LEN;
 736         if (priv->fw_var >= 0x509)
 737                 maxblocksize -= 0xc;
 738         else
 739                 maxblocksize -= 0x4;
 740
 741         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
 742         if (unlikely(!eeprom))
 743                 goto free;
 744
 745         while (eeprom_size) {
 746                 blocksize = min(eeprom_size, maxblocksize);
 747                 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
 748                                           offset, blocksize);
 749                 if (unlikely(ret))
 750                         goto free;
 751
 752                 offset += blocksize;
 753                 eeprom_size -= blocksize;
 754         }
 755
 756         ret = p54_parse_eeprom(dev, eeprom, offset);
 757 free:
 758         kfree(eeprom);
 759         return ret;
 760 }
 761 EXPORT_SYMBOL_GPL(p54_read_eeprom);