982 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * EEPROM parser code for mac80211 Prism54 drivers4 *5 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>6 * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>7 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>8 *9 * Based on:10 * - the islsm (softmac prism54) driver, which is:11 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.12 * - stlc45xx driver13 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).14 */15 16#include <linux/firmware.h>17#include <linux/etherdevice.h>18#include <linux/sort.h>19#include <linux/slab.h>20 21#include <net/mac80211.h>22#include <linux/crc-ccitt.h>23#include <linux/export.h>24 25#include "p54.h"26#include "eeprom.h"27#include "lmac.h"28 29static struct ieee80211_rate p54_bgrates[] = {30 { .bitrate = 10, .hw_value = 0, },31 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },32 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },33 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },34 { .bitrate = 60, .hw_value = 4, },35 { .bitrate = 90, .hw_value = 5, },36 { .bitrate = 120, .hw_value = 6, },37 { .bitrate = 180, .hw_value = 7, },38 { .bitrate = 240, .hw_value = 8, },39 { .bitrate = 360, .hw_value = 9, },40 { .bitrate = 480, .hw_value = 10, },41 { .bitrate = 540, .hw_value = 11, },42};43 44static struct ieee80211_rate p54_arates[] = {45 { .bitrate = 60, .hw_value = 4, },46 { .bitrate = 90, .hw_value = 5, },47 { .bitrate = 120, .hw_value = 6, },48 { .bitrate = 180, .hw_value = 7, },49 { .bitrate = 240, .hw_value = 8, },50 { .bitrate = 360, .hw_value = 9, },51 { .bitrate = 480, .hw_value = 10, },52 { .bitrate = 540, .hw_value = 11, },53};54 55static struct p54_rssi_db_entry p54_rssi_default = {56 /*57 * The defaults are taken from usb-logs of the58 * vendor driver. So, they should be safe to59 * use in case we can't get a match from the60 * rssi <-> dBm conversion database.61 */62 .mul = 130,63 .add = -398,64};65 66#define CHAN_HAS_CAL BIT(0)67#define CHAN_HAS_LIMIT BIT(1)68#define CHAN_HAS_CURVE BIT(2)69#define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE)70 71struct p54_channel_entry {72 u16 freq;73 u16 data;74 int index;75 int max_power;76 enum nl80211_band band;77};78 79struct p54_channel_list {80 struct p54_channel_entry *channels;81 size_t entries;82 size_t max_entries;83 size_t band_channel_num[NUM_NL80211_BANDS];84};85 86static int p54_get_band_from_freq(u16 freq)87{88 /* FIXME: sync these values with the 802.11 spec */89 90 if ((freq >= 2412) && (freq <= 2484))91 return NL80211_BAND_2GHZ;92 93 if ((freq >= 4920) && (freq <= 5825))94 return NL80211_BAND_5GHZ;95 96 return -1;97}98 99static int same_band(u16 freq, u16 freq2)100{101 return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq2);102}103 104static int p54_compare_channels(const void *_a,105 const void *_b)106{107 const struct p54_channel_entry *a = _a;108 const struct p54_channel_entry *b = _b;109 110 return a->freq - b->freq;111}112 113static int p54_compare_rssichan(const void *_a,114 const void *_b)115{116 const struct p54_rssi_db_entry *a = _a;117 const struct p54_rssi_db_entry *b = _b;118 119 return a->freq - b->freq;120}121 122static int p54_fill_band_bitrates(struct ieee80211_hw *dev,123 struct ieee80211_supported_band *band_entry,124 enum nl80211_band band)125{126 /* TODO: generate rate array dynamically */127 128 switch (band) {129 case NL80211_BAND_2GHZ:130 band_entry->bitrates = p54_bgrates;131 band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates);132 break;133 case NL80211_BAND_5GHZ:134 band_entry->bitrates = p54_arates;135 band_entry->n_bitrates = ARRAY_SIZE(p54_arates);136 break;137 default:138 return -EINVAL;139 }140 141 return 0;142}143 144static int p54_generate_band(struct ieee80211_hw *dev,145 struct p54_channel_list *list,146 unsigned int *chan_num,147 enum nl80211_band band)148{149 struct p54_common *priv = dev->priv;150 struct ieee80211_supported_band *tmp, *old;151 unsigned int i, j;152 int ret = -ENOMEM;153 154 if ((!list->entries) || (!list->band_channel_num[band]))155 return -EINVAL;156 157 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);158 if (!tmp)159 goto err_out;160 161 tmp->channels = kcalloc(list->band_channel_num[band],162 sizeof(struct ieee80211_channel),163 GFP_KERNEL);164 if (!tmp->channels)165 goto err_out;166 167 ret = p54_fill_band_bitrates(dev, tmp, band);168 if (ret)169 goto err_out;170 171 for (i = 0, j = 0; (j < list->band_channel_num[band]) &&172 (i < list->entries); i++) {173 struct p54_channel_entry *chan = &list->channels[i];174 struct ieee80211_channel *dest = &tmp->channels[j];175 176 if (chan->band != band)177 continue;178 179 if (chan->data != CHAN_HAS_ALL) {180 wiphy_err(dev->wiphy, "%s%s%s is/are missing for "181 "channel:%d [%d MHz].\n",182 (chan->data & CHAN_HAS_CAL ? "" :183 " [iqauto calibration data]"),184 (chan->data & CHAN_HAS_LIMIT ? "" :185 " [output power limits]"),186 (chan->data & CHAN_HAS_CURVE ? "" :187 " [curve data]"),188 chan->index, chan->freq);189 continue;190 }191 192 dest->band = chan->band;193 dest->center_freq = chan->freq;194 dest->max_power = chan->max_power;195 priv->survey[*chan_num].channel = &tmp->channels[j];196 priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM |197 SURVEY_INFO_TIME |198 SURVEY_INFO_TIME_BUSY |199 SURVEY_INFO_TIME_TX;200 dest->hw_value = (*chan_num);201 j++;202 (*chan_num)++;203 }204 205 if (j == 0) {206 wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n",207 (band == NL80211_BAND_2GHZ) ? 2 : 5);208 209 ret = -ENODATA;210 goto err_out;211 }212 213 tmp->n_channels = j;214 old = priv->band_table[band];215 priv->band_table[band] = tmp;216 if (old) {217 kfree(old->channels);218 kfree(old);219 }220 221 return 0;222 223err_out:224 if (tmp) {225 kfree(tmp->channels);226 kfree(tmp);227 }228 229 return ret;230}231 232static struct p54_channel_entry *p54_update_channel_param(struct p54_channel_list *list,233 u16 freq, u16 data)234{235 int i;236 struct p54_channel_entry *entry = NULL;237 238 /*239 * usually all lists in the eeprom are mostly sorted.240 * so it's very likely that the entry we are looking for241 * is right at the end of the list242 */243 for (i = list->entries; i >= 0; i--) {244 if (freq == list->channels[i].freq) {245 entry = &list->channels[i];246 break;247 }248 }249 250 if ((i < 0) && (list->entries < list->max_entries)) {251 /* entry does not exist yet. Initialize a new one. */252 int band = p54_get_band_from_freq(freq);253 254 /*255 * filter out frequencies which don't belong into256 * any supported band.257 */258 if (band >= 0) {259 i = list->entries++;260 list->band_channel_num[band]++;261 262 entry = &list->channels[i];263 entry->freq = freq;264 entry->band = band;265 entry->index = ieee80211_frequency_to_channel(freq);266 entry->max_power = 0;267 entry->data = 0;268 }269 }270 271 if (entry)272 entry->data |= data;273 274 return entry;275}276 277static int p54_get_maxpower(struct p54_common *priv, void *data)278{279 switch (priv->rxhw & PDR_SYNTH_FRONTEND_MASK) {280 case PDR_SYNTH_FRONTEND_LONGBOW: {281 struct pda_channel_output_limit_longbow *pda = data;282 int j;283 u16 rawpower = 0;284 pda = data;285 for (j = 0; j < ARRAY_SIZE(pda->point); j++) {286 struct pda_channel_output_limit_point_longbow *point =287 &pda->point[j];288 rawpower = max_t(u16,289 rawpower, le16_to_cpu(point->val_qpsk));290 rawpower = max_t(u16,291 rawpower, le16_to_cpu(point->val_bpsk));292 rawpower = max_t(u16,293 rawpower, le16_to_cpu(point->val_16qam));294 rawpower = max_t(u16,295 rawpower, le16_to_cpu(point->val_64qam));296 }297 /* longbow seems to use 1/16 dBm units */298 return rawpower / 16;299 }300 301 case PDR_SYNTH_FRONTEND_DUETTE3:302 case PDR_SYNTH_FRONTEND_DUETTE2:303 case PDR_SYNTH_FRONTEND_FRISBEE:304 case PDR_SYNTH_FRONTEND_XBOW: {305 struct pda_channel_output_limit *pda = data;306 u8 rawpower = 0;307 rawpower = max(rawpower, pda->val_qpsk);308 rawpower = max(rawpower, pda->val_bpsk);309 rawpower = max(rawpower, pda->val_16qam);310 rawpower = max(rawpower, pda->val_64qam);311 /* raw values are in 1/4 dBm units */312 return rawpower / 4;313 }314 315 default:316 return 20;317 }318}319 320static int p54_generate_channel_lists(struct ieee80211_hw *dev)321{322 struct p54_common *priv = dev->priv;323 struct p54_channel_list *list;324 unsigned int i, j, k, max_channel_num;325 int ret = 0;326 u16 freq;327 328 if ((priv->iq_autocal_len != priv->curve_data->entries) ||329 (priv->iq_autocal_len != priv->output_limit->entries))330 wiphy_err(dev->wiphy,331 "Unsupported or damaged EEPROM detected. "332 "You may not be able to use all channels.\n");333 334 max_channel_num = max_t(unsigned int, priv->output_limit->entries,335 priv->iq_autocal_len);336 max_channel_num = max_t(unsigned int, max_channel_num,337 priv->curve_data->entries);338 339 list = kzalloc(sizeof(*list), GFP_KERNEL);340 if (!list) {341 ret = -ENOMEM;342 goto free;343 }344 priv->chan_num = max_channel_num;345 priv->survey = kcalloc(max_channel_num, sizeof(struct survey_info),346 GFP_KERNEL);347 if (!priv->survey) {348 ret = -ENOMEM;349 goto free;350 }351 352 list->max_entries = max_channel_num;353 list->channels = kcalloc(max_channel_num,354 sizeof(struct p54_channel_entry),355 GFP_KERNEL);356 if (!list->channels) {357 ret = -ENOMEM;358 goto free;359 }360 361 for (i = 0; i < max_channel_num; i++) {362 if (i < priv->iq_autocal_len) {363 freq = le16_to_cpu(priv->iq_autocal[i].freq);364 p54_update_channel_param(list, freq, CHAN_HAS_CAL);365 }366 367 if (i < priv->output_limit->entries) {368 struct p54_channel_entry *tmp;369 370 void *data = (void *) ((unsigned long) i *371 priv->output_limit->entry_size +372 priv->output_limit->offset +373 priv->output_limit->data);374 375 freq = le16_to_cpup((__le16 *) data);376 tmp = p54_update_channel_param(list, freq,377 CHAN_HAS_LIMIT);378 if (tmp) {379 tmp->max_power = p54_get_maxpower(priv, data);380 }381 }382 383 if (i < priv->curve_data->entries) {384 freq = le16_to_cpup((__le16 *) (i *385 priv->curve_data->entry_size +386 priv->curve_data->offset +387 priv->curve_data->data));388 389 p54_update_channel_param(list, freq, CHAN_HAS_CURVE);390 }391 }392 393 /* sort the channel list by frequency */394 sort(list->channels, list->entries, sizeof(struct p54_channel_entry),395 p54_compare_channels, NULL);396 397 k = 0;398 for (i = 0, j = 0; i < NUM_NL80211_BANDS; i++) {399 if (p54_generate_band(dev, list, &k, i) == 0)400 j++;401 }402 if (j == 0) {403 /* no useable band available. */404 ret = -EINVAL;405 }406 407free:408 if (list) {409 kfree(list->channels);410 kfree(list);411 }412 if (ret) {413 kfree(priv->survey);414 priv->survey = NULL;415 }416 417 return ret;418}419 420static int p54_convert_rev0(struct ieee80211_hw *dev,421 struct pda_pa_curve_data *curve_data)422{423 struct p54_common *priv = dev->priv;424 struct p54_pa_curve_data_sample *dst;425 struct pda_pa_curve_data_sample_rev0 *src;426 size_t cd_len = sizeof(*curve_data) +427 (curve_data->points_per_channel*sizeof(*dst) + 2) *428 curve_data->channels;429 unsigned int i, j;430 void *source, *target;431 432 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,433 GFP_KERNEL);434 if (!priv->curve_data)435 return -ENOMEM;436 437 priv->curve_data->entries = curve_data->channels;438 priv->curve_data->entry_size = sizeof(__le16) +439 sizeof(*dst) * curve_data->points_per_channel;440 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);441 priv->curve_data->len = cd_len;442 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));443 source = curve_data->data;444 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;445 for (i = 0; i < curve_data->channels; i++) {446 __le16 *freq = source;447 source += sizeof(__le16);448 *((__le16 *)target) = *freq;449 target += sizeof(__le16);450 for (j = 0; j < curve_data->points_per_channel; j++) {451 dst = target;452 src = source;453 454 dst->rf_power = src->rf_power;455 dst->pa_detector = src->pa_detector;456 dst->data_64qam = src->pcv;457 /* "invent" the points for the other modulations */458#define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))459 dst->data_16qam = SUB(src->pcv, 12);460 dst->data_qpsk = SUB(dst->data_16qam, 12);461 dst->data_bpsk = SUB(dst->data_qpsk, 12);462 dst->data_barker = SUB(dst->data_bpsk, 14);463#undef SUB464 target += sizeof(*dst);465 source += sizeof(*src);466 }467 }468 469 return 0;470}471 472static int p54_convert_rev1(struct ieee80211_hw *dev,473 struct pda_pa_curve_data *curve_data)474{475 struct p54_common *priv = dev->priv;476 struct p54_pa_curve_data_sample *dst;477 struct pda_pa_curve_data_sample_rev1 *src;478 size_t cd_len = sizeof(*curve_data) +479 (curve_data->points_per_channel*sizeof(*dst) + 2) *480 curve_data->channels;481 unsigned int i, j;482 void *source, *target;483 484 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),485 GFP_KERNEL);486 if (!priv->curve_data)487 return -ENOMEM;488 489 priv->curve_data->entries = curve_data->channels;490 priv->curve_data->entry_size = sizeof(__le16) +491 sizeof(*dst) * curve_data->points_per_channel;492 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);493 priv->curve_data->len = cd_len;494 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));495 source = curve_data->data;496 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;497 for (i = 0; i < curve_data->channels; i++) {498 __le16 *freq = source;499 source += sizeof(__le16);500 *((__le16 *)target) = *freq;501 target += sizeof(__le16);502 for (j = 0; j < curve_data->points_per_channel; j++) {503 memcpy(target, source, sizeof(*src));504 505 target += sizeof(*dst);506 source += sizeof(*src);507 }508 source++;509 }510 511 return 0;512}513 514static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",515 "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };516 517static int p54_parse_rssical(struct ieee80211_hw *dev,518 u8 *data, int len, u16 type)519{520 struct p54_common *priv = dev->priv;521 struct p54_rssi_db_entry *entry;522 size_t db_len, entries;523 int offset = 0, i;524 525 if (type != PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) {526 entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;527 if (len != sizeof(struct pda_rssi_cal_entry) * entries) {528 wiphy_err(dev->wiphy, "rssical size mismatch.\n");529 goto err_data;530 }531 } else {532 /*533 * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...)534 * have an empty two byte header.535 */536 if (*((__le16 *)&data[offset]) == cpu_to_le16(0))537 offset += 2;538 539 entries = (len - offset) /540 sizeof(struct pda_rssi_cal_ext_entry);541 542 if (len < offset ||543 (len - offset) % sizeof(struct pda_rssi_cal_ext_entry) ||544 entries == 0) {545 wiphy_err(dev->wiphy, "invalid rssi database.\n");546 goto err_data;547 }548 }549 550 db_len = sizeof(*entry) * entries;551 priv->rssi_db = kzalloc(db_len + sizeof(*priv->rssi_db), GFP_KERNEL);552 if (!priv->rssi_db)553 return -ENOMEM;554 555 priv->rssi_db->offset = 0;556 priv->rssi_db->entries = entries;557 priv->rssi_db->entry_size = sizeof(*entry);558 priv->rssi_db->len = db_len;559 560 entry = (void *)((unsigned long)priv->rssi_db->data + priv->rssi_db->offset);561 if (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) {562 struct pda_rssi_cal_ext_entry *cal = (void *) &data[offset];563 564 for (i = 0; i < entries; i++) {565 entry[i].freq = le16_to_cpu(cal[i].freq);566 entry[i].mul = (s16) le16_to_cpu(cal[i].mul);567 entry[i].add = (s16) le16_to_cpu(cal[i].add);568 }569 } else {570 struct pda_rssi_cal_entry *cal = (void *) &data[offset];571 572 for (i = 0; i < entries; i++) {573 u16 freq = 0;574 switch (i) {575 case NL80211_BAND_2GHZ:576 freq = 2437;577 break;578 case NL80211_BAND_5GHZ:579 freq = 5240;580 break;581 }582 583 entry[i].freq = freq;584 entry[i].mul = (s16) le16_to_cpu(cal[i].mul);585 entry[i].add = (s16) le16_to_cpu(cal[i].add);586 }587 }588 589 /* sort the list by channel frequency */590 sort(entry, entries, sizeof(*entry), p54_compare_rssichan, NULL);591 return 0;592 593err_data:594 wiphy_err(dev->wiphy,595 "rssi calibration data packing type:(%x) len:%d.\n",596 type, len);597 598 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, data, len);599 600 wiphy_err(dev->wiphy, "please report this issue.\n");601 return -EINVAL;602}603 604struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *priv, const u16 freq)605{606 struct p54_rssi_db_entry *entry;607 int i, found = -1;608 609 if (!priv->rssi_db)610 return &p54_rssi_default;611 612 entry = (void *)(priv->rssi_db->data + priv->rssi_db->offset);613 for (i = 0; i < priv->rssi_db->entries; i++) {614 if (!same_band(freq, entry[i].freq))615 continue;616 617 if (found == -1) {618 found = i;619 continue;620 }621 622 /* nearest match */623 if (abs(freq - entry[i].freq) <624 abs(freq - entry[found].freq)) {625 found = i;626 continue;627 } else {628 break;629 }630 }631 632 return found < 0 ? &p54_rssi_default : &entry[found];633}634 635static void p54_parse_default_country(struct ieee80211_hw *dev,636 void *data, int len)637{638 struct pda_country *country;639 640 if (len != sizeof(*country)) {641 wiphy_err(dev->wiphy,642 "found possible invalid default country eeprom entry. (entry size: %d)\n",643 len);644 645 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,646 data, len);647 648 wiphy_err(dev->wiphy, "please report this issue.\n");649 return;650 }651 652 country = (struct pda_country *) data;653 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)654 regulatory_hint(dev->wiphy, country->alpha2);655 else {656 /* TODO:657 * write a shared/common function that converts658 * "Regulatory domain codes" (802.11-2007 14.8.2.2)659 * into ISO/IEC 3166-1 alpha2 for regulatory_hint.660 */661 }662}663 664static int p54_convert_output_limits(struct ieee80211_hw *dev,665 u8 *data, size_t len)666{667 struct p54_common *priv = dev->priv;668 669 if (len < 2)670 return -EINVAL;671 672 if (data[0] != 0) {673 wiphy_err(dev->wiphy, "unknown output power db revision:%x\n",674 data[0]);675 return -EINVAL;676 }677 678 if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)679 return -EINVAL;680 681 priv->output_limit = kmalloc(data[1] *682 sizeof(struct pda_channel_output_limit) +683 sizeof(*priv->output_limit), GFP_KERNEL);684 685 if (!priv->output_limit)686 return -ENOMEM;687 688 priv->output_limit->offset = 0;689 priv->output_limit->entries = data[1];690 priv->output_limit->entry_size =691 sizeof(struct pda_channel_output_limit);692 priv->output_limit->len = priv->output_limit->entry_size *693 priv->output_limit->entries +694 priv->output_limit->offset;695 696 memcpy(priv->output_limit->data, &data[2],697 data[1] * sizeof(struct pda_channel_output_limit));698 699 return 0;700}701 702static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,703 size_t total_len)704{705 struct p54_cal_database *dst;706 size_t payload_len, entries, entry_size, offset;707 708 payload_len = le16_to_cpu(src->len);709 entries = le16_to_cpu(src->entries);710 entry_size = le16_to_cpu(src->entry_size);711 offset = le16_to_cpu(src->offset);712 if (((entries * entry_size + offset) != payload_len) ||713 (payload_len + sizeof(*src) != total_len))714 return NULL;715 716 dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);717 if (!dst)718 return NULL;719 720 dst->entries = entries;721 dst->entry_size = entry_size;722 dst->offset = offset;723 dst->len = payload_len;724 725 memcpy(dst->data, src->data, payload_len);726 return dst;727}728 729int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)730{731 struct p54_common *priv = dev->priv;732 struct eeprom_pda_wrap *wrap;733 struct pda_entry *entry;734 unsigned int data_len, entry_len;735 void *tmp;736 int err;737 u8 *end = (u8 *)eeprom + len;738 u16 synth = 0;739 u16 crc16 = ~0;740 741 wrap = (struct eeprom_pda_wrap *) eeprom;742 entry = (void *)wrap->data + le16_to_cpu(wrap->len);743 744 /* verify that at least the entry length/code fits */745 while ((u8 *)entry <= end - sizeof(*entry)) {746 entry_len = le16_to_cpu(entry->len);747 data_len = ((entry_len - 1) << 1);748 749 /* abort if entry exceeds whole structure */750 if ((u8 *)entry + sizeof(*entry) + data_len > end)751 break;752 753 switch (le16_to_cpu(entry->code)) {754 case PDR_MAC_ADDRESS:755 if (data_len != ETH_ALEN)756 break;757 SET_IEEE80211_PERM_ADDR(dev, entry->data);758 break;759 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:760 if (priv->output_limit)761 break;762 err = p54_convert_output_limits(dev, entry->data,763 data_len);764 if (err)765 goto err;766 break;767 case PDR_PRISM_PA_CAL_CURVE_DATA: {768 struct pda_pa_curve_data *curve_data =769 (struct pda_pa_curve_data *)entry->data;770 if (data_len < sizeof(*curve_data)) {771 err = -EINVAL;772 goto err;773 }774 775 switch (curve_data->cal_method_rev) {776 case 0:777 err = p54_convert_rev0(dev, curve_data);778 break;779 case 1:780 err = p54_convert_rev1(dev, curve_data);781 break;782 default:783 wiphy_err(dev->wiphy,784 "unknown curve data revision %d\n",785 curve_data->cal_method_rev);786 err = -ENODEV;787 break;788 }789 if (err)790 goto err;791 }792 break;793 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:794 priv->iq_autocal = kmemdup(entry->data, data_len,795 GFP_KERNEL);796 if (!priv->iq_autocal) {797 err = -ENOMEM;798 goto err;799 }800 801 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);802 break;803 case PDR_DEFAULT_COUNTRY:804 p54_parse_default_country(dev, entry->data, data_len);805 break;806 case PDR_INTERFACE_LIST:807 tmp = entry->data;808 while ((u8 *)tmp < entry->data + data_len) {809 struct exp_if *exp_if = tmp;810 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))811 synth = le16_to_cpu(exp_if->variant);812 tmp += sizeof(*exp_if);813 }814 break;815 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:816 if (data_len < 2)817 break;818 priv->version = *(u8 *)(entry->data + 1);819 break;820 case PDR_RSSI_LINEAR_APPROXIMATION:821 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:822 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:823 err = p54_parse_rssical(dev, entry->data, data_len,824 le16_to_cpu(entry->code));825 if (err)826 goto err;827 break;828 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: {829 struct pda_custom_wrapper *pda = (void *) entry->data;830 __le16 *src;831 u16 *dst;832 int i;833 834 if (priv->rssi_db || data_len < sizeof(*pda))835 break;836 837 priv->rssi_db = p54_convert_db(pda, data_len);838 if (!priv->rssi_db)839 break;840 841 src = (void *) priv->rssi_db->data;842 dst = (void *) priv->rssi_db->data;843 844 for (i = 0; i < priv->rssi_db->entries; i++)845 *(dst++) = (s16) le16_to_cpu(*(src++));846 847 }848 break;849 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {850 struct pda_custom_wrapper *pda = (void *) entry->data;851 if (priv->output_limit || data_len < sizeof(*pda))852 break;853 priv->output_limit = p54_convert_db(pda, data_len);854 }855 break;856 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {857 struct pda_custom_wrapper *pda = (void *) entry->data;858 if (priv->curve_data || data_len < sizeof(*pda))859 break;860 priv->curve_data = p54_convert_db(pda, data_len);861 }862 break;863 case PDR_END:864 crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry));865 if (crc16 != le16_to_cpup((__le16 *)entry->data)) {866 wiphy_err(dev->wiphy, "eeprom failed checksum "867 "test!\n");868 err = -ENOMSG;869 goto err;870 } else {871 goto good_eeprom;872 }873 break;874 default:875 break;876 }877 878 crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2);879 entry = (void *)entry + (entry_len + 1) * 2;880 }881 882 wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n");883 err = -ENODATA;884 goto err;885 886good_eeprom:887 if (!synth || !priv->iq_autocal || !priv->output_limit ||888 !priv->curve_data) {889 wiphy_err(dev->wiphy,890 "not all required entries found in eeprom!\n");891 err = -EINVAL;892 goto err;893 }894 895 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;896 897 err = p54_generate_channel_lists(dev);898 if (err)899 goto err;900 901 if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)902 p54_init_xbow_synth(priv);903 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))904 dev->wiphy->bands[NL80211_BAND_2GHZ] =905 priv->band_table[NL80211_BAND_2GHZ];906 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))907 dev->wiphy->bands[NL80211_BAND_5GHZ] =908 priv->band_table[NL80211_BAND_5GHZ];909 if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)910 priv->rx_diversity_mask = 3;911 if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)912 priv->tx_diversity_mask = 3;913 914 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {915 u8 perm_addr[ETH_ALEN];916 917 wiphy_warn(dev->wiphy,918 "Invalid hwaddr! Using randomly generated MAC addr\n");919 eth_random_addr(perm_addr);920 SET_IEEE80211_PERM_ADDR(dev, perm_addr);921 }922 923 priv->cur_rssi = &p54_rssi_default;924 925 wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n",926 dev->wiphy->perm_addr, priv->version,927 p54_rf_chips[priv->rxhw]);928 929 return 0;930 931err:932 kfree(priv->iq_autocal);933 kfree(priv->output_limit);934 kfree(priv->curve_data);935 kfree(priv->rssi_db);936 kfree(priv->survey);937 priv->iq_autocal = NULL;938 priv->output_limit = NULL;939 priv->curve_data = NULL;940 priv->rssi_db = NULL;941 priv->survey = NULL;942 943 wiphy_err(dev->wiphy, "eeprom parse failed!\n");944 return err;945}946EXPORT_SYMBOL_GPL(p54_parse_eeprom);947 948int p54_read_eeprom(struct ieee80211_hw *dev)949{950 struct p54_common *priv = dev->priv;951 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;952 int ret = -ENOMEM;953 void *eeprom;954 955 maxblocksize = EEPROM_READBACK_LEN;956 if (priv->fw_var >= 0x509)957 maxblocksize -= 0xc;958 else959 maxblocksize -= 0x4;960 961 eeprom = kzalloc(eeprom_size, GFP_KERNEL);962 if (unlikely(!eeprom))963 goto free;964 965 while (eeprom_size) {966 blocksize = min(eeprom_size, maxblocksize);967 ret = p54_download_eeprom(priv, eeprom + offset,968 offset, blocksize);969 if (unlikely(ret))970 goto free;971 972 offset += blocksize;973 eeprom_size -= blocksize;974 }975 976 ret = p54_parse_eeprom(dev, eeprom, offset);977free:978 kfree(eeprom);979 return ret;980}981EXPORT_SYMBOL_GPL(p54_read_eeprom);982