1 // SPDX-License-Identifier: GPL-2.0-only
3 * EEPROM parser code for mac80211 Prism54 drivers
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>
10 * - the islsm (softmac prism54) driver, which is:
11 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
13 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
16 #include <linux/firmware.h>
17 #include <linux/etherdevice.h>
18 #include <linux/sort.h>
19 #include <linux/slab.h>
21 #include <net/mac80211.h>
22 #include <linux/crc-ccitt.h>
23 #include <linux/export.h>
29 static 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, },
44 static 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, },
55 static struct p54_rssi_db_entry p54_rssi_default = {
57 * The defaults are taken from usb-logs of the
58 * vendor driver. So, they should be safe to
59 * use in case we can't get a match from the
60 * rssi <-> dBm conversion database.
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)
71 struct p54_channel_entry {
76 enum nl80211_band band;
79 struct p54_channel_list {
80 struct p54_channel_entry *channels;
83 size_t band_channel_num[NUM_NL80211_BANDS];
86 static int p54_get_band_from_freq(u16 freq)
88 /* FIXME: sync these values with the 802.11 spec */
90 if ((freq >= 2412) && (freq <= 2484))
91 return NL80211_BAND_2GHZ;
93 if ((freq >= 4920) && (freq <= 5825))
94 return NL80211_BAND_5GHZ;
99 static int same_band(u16 freq, u16 freq2)
101 return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq2);
104 static int p54_compare_channels(const void *_a,
107 const struct p54_channel_entry *a = _a;
108 const struct p54_channel_entry *b = _b;
110 return a->freq - b->freq;
113 static int p54_compare_rssichan(const void *_a,
116 const struct p54_rssi_db_entry *a = _a;
117 const struct p54_rssi_db_entry *b = _b;
119 return a->freq - b->freq;
122 static int p54_fill_band_bitrates(struct ieee80211_hw *dev,
123 struct ieee80211_supported_band *band_entry,
124 enum nl80211_band band)
126 /* TODO: generate rate array dynamically */
129 case NL80211_BAND_2GHZ:
130 band_entry->bitrates = p54_bgrates;
131 band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates);
133 case NL80211_BAND_5GHZ:
134 band_entry->bitrates = p54_arates;
135 band_entry->n_bitrates = ARRAY_SIZE(p54_arates);
144 static int p54_generate_band(struct ieee80211_hw *dev,
145 struct p54_channel_list *list,
146 unsigned int *chan_num,
147 enum nl80211_band band)
149 struct p54_common *priv = dev->priv;
150 struct ieee80211_supported_band *tmp, *old;
154 if ((!list->entries) || (!list->band_channel_num[band]))
157 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
161 tmp->channels = kcalloc(list->band_channel_num[band],
162 sizeof(struct ieee80211_channel),
167 ret = p54_fill_band_bitrates(dev, tmp, band);
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];
176 if (chan->band != band)
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 ? "" :
188 chan->index, chan->freq);
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 |
198 SURVEY_INFO_TIME_BUSY |
200 dest->hw_value = (*chan_num);
206 wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n",
207 (band == NL80211_BAND_2GHZ) ? 2 : 5);
214 old = priv->band_table[band];
215 priv->band_table[band] = tmp;
217 kfree(old->channels);
225 kfree(tmp->channels);
232 static struct p54_channel_entry *p54_update_channel_param(struct p54_channel_list *list,
236 struct p54_channel_entry *entry = NULL;
239 * usually all lists in the eeprom are mostly sorted.
240 * so it's very likely that the entry we are looking for
241 * is right at the end of the list
243 for (i = list->entries; i >= 0; i--) {
244 if (freq == list->channels[i].freq) {
245 entry = &list->channels[i];
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);
255 * filter out frequencies which don't belong into
256 * any supported band.
260 list->band_channel_num[band]++;
262 entry = &list->channels[i];
265 entry->index = ieee80211_frequency_to_channel(freq);
266 entry->max_power = 0;
277 static int p54_get_maxpower(struct p54_common *priv, void *data)
279 switch (priv->rxhw & PDR_SYNTH_FRONTEND_MASK) {
280 case PDR_SYNTH_FRONTEND_LONGBOW: {
281 struct pda_channel_output_limit_longbow *pda = data;
285 for (j = 0; j < ARRAY_SIZE(pda->point); j++) {
286 struct pda_channel_output_limit_point_longbow *point =
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));
297 /* longbow seems to use 1/16 dBm units */
298 return rawpower / 16;
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;
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 */
320 static int p54_generate_channel_lists(struct ieee80211_hw *dev)
322 struct p54_common *priv = dev->priv;
323 struct p54_channel_list *list;
324 unsigned int i, j, k, max_channel_num;
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");
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);
339 list = kzalloc(sizeof(*list), GFP_KERNEL);
344 priv->chan_num = max_channel_num;
345 priv->survey = kcalloc(max_channel_num, sizeof(struct survey_info),
352 list->max_entries = max_channel_num;
353 list->channels = kcalloc(max_channel_num,
354 sizeof(struct p54_channel_entry),
356 if (!list->channels) {
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);
367 if (i < priv->output_limit->entries) {
368 struct p54_channel_entry *tmp;
370 void *data = (void *) ((unsigned long) i *
371 priv->output_limit->entry_size +
372 priv->output_limit->offset +
373 priv->output_limit->data);
375 freq = le16_to_cpup((__le16 *) data);
376 tmp = p54_update_channel_param(list, freq,
379 tmp->max_power = p54_get_maxpower(priv, data);
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));
389 p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
393 /* sort the channel list by frequency */
394 sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
395 p54_compare_channels, NULL);
398 for (i = 0, j = 0; i < NUM_NL80211_BANDS; i++) {
399 if (p54_generate_band(dev, list, &k, i) == 0)
403 /* no useable band available. */
409 kfree(list->channels);
420 static int p54_convert_rev0(struct ieee80211_hw *dev,
421 struct pda_pa_curve_data *curve_data)
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;
430 void *source, *target;
432 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
434 if (!priv->curve_data)
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++) {
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);
464 target += sizeof(*dst);
465 source += sizeof(*src);
472 static int p54_convert_rev1(struct ieee80211_hw *dev,
473 struct pda_pa_curve_data *curve_data)
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;
482 void *source, *target;
484 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
486 if (!priv->curve_data)
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));
505 target += sizeof(*dst);
506 source += sizeof(*src);
514 static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
515 "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
517 static int p54_parse_rssical(struct ieee80211_hw *dev,
518 u8 *data, int len, u16 type)
520 struct p54_common *priv = dev->priv;
521 struct p54_rssi_db_entry *entry;
522 size_t db_len, entries;
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");
533 * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...)
534 * have an empty two byte header.
536 if (*((__le16 *)&data[offset]) == cpu_to_le16(0))
539 entries = (len - offset) /
540 sizeof(struct pda_rssi_cal_ext_entry);
543 (len - offset) % sizeof(struct pda_rssi_cal_ext_entry) ||
545 wiphy_err(dev->wiphy, "invalid rssi database.\n");
550 db_len = sizeof(*entry) * entries;
551 priv->rssi_db = kzalloc(db_len + sizeof(*priv->rssi_db), GFP_KERNEL);
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;
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];
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);
570 struct pda_rssi_cal_entry *cal = (void *) &data[offset];
572 for (i = 0; i < entries; i++) {
575 case NL80211_BAND_2GHZ:
578 case NL80211_BAND_5GHZ:
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);
589 /* sort the list by channel frequency */
590 sort(entry, entries, sizeof(*entry), p54_compare_rssichan, NULL);
594 wiphy_err(dev->wiphy,
595 "rssi calibration data packing type:(%x) len:%d.\n",
598 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, data, len);
600 wiphy_err(dev->wiphy, "please report this issue.\n");
604 struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *priv, const u16 freq)
606 struct p54_rssi_db_entry *entry;
610 return &p54_rssi_default;
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))
623 if (abs(freq - entry[i].freq) <
624 abs(freq - entry[found].freq)) {
632 return found < 0 ? &p54_rssi_default : &entry[found];
635 static void p54_parse_default_country(struct ieee80211_hw *dev,
638 struct pda_country *country;
640 if (len != sizeof(*country)) {
641 wiphy_err(dev->wiphy,
642 "found possible invalid default country eeprom entry. (entry size: %d)\n",
645 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
648 wiphy_err(dev->wiphy, "please report this issue.\n");
652 country = (struct pda_country *) data;
653 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
654 regulatory_hint(dev->wiphy, country->alpha2);
657 * write a shared/common function that converts
658 * "Regulatory domain codes" (802.11-2007 14.8.2.2)
659 * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
664 static int p54_convert_output_limits(struct ieee80211_hw *dev,
665 u8 *data, size_t len)
667 struct p54_common *priv = dev->priv;
673 wiphy_err(dev->wiphy, "unknown output power db revision:%x\n",
678 if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
681 priv->output_limit = kmalloc(data[1] *
682 sizeof(struct pda_channel_output_limit) +
683 sizeof(*priv->output_limit), GFP_KERNEL);
685 if (!priv->output_limit)
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;
696 memcpy(priv->output_limit->data, &data[2],
697 data[1] * sizeof(struct pda_channel_output_limit));
702 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
705 struct p54_cal_database *dst;
706 size_t payload_len, entries, entry_size, offset;
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))
716 dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
720 dst->entries = entries;
721 dst->entry_size = entry_size;
722 dst->offset = offset;
723 dst->len = payload_len;
725 memcpy(dst->data, src->data, payload_len);
729 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
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;
737 u8 *end = (u8 *)eeprom + len;
741 wrap = (struct eeprom_pda_wrap *) eeprom;
742 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
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);
749 /* abort if entry exceeds whole structure */
750 if ((u8 *)entry + sizeof(*entry) + data_len > end)
753 switch (le16_to_cpu(entry->code)) {
754 case PDR_MAC_ADDRESS:
755 if (data_len != ETH_ALEN)
757 SET_IEEE80211_PERM_ADDR(dev, entry->data);
759 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
760 if (priv->output_limit)
762 err = p54_convert_output_limits(dev, entry->data,
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)) {
775 switch (curve_data->cal_method_rev) {
777 err = p54_convert_rev0(dev, curve_data);
780 err = p54_convert_rev1(dev, curve_data);
783 wiphy_err(dev->wiphy,
784 "unknown curve data revision %d\n",
785 curve_data->cal_method_rev);
793 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
794 priv->iq_autocal = kmemdup(entry->data, data_len,
796 if (!priv->iq_autocal) {
801 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
803 case PDR_DEFAULT_COUNTRY:
804 p54_parse_default_country(dev, entry->data, data_len);
806 case PDR_INTERFACE_LIST:
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);
815 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
818 priv->version = *(u8 *)(entry->data + 1);
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));
828 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: {
829 struct pda_custom_wrapper *pda = (void *) entry->data;
834 if (priv->rssi_db || data_len < sizeof(*pda))
837 priv->rssi_db = p54_convert_db(pda, data_len);
841 src = (void *) priv->rssi_db->data;
842 dst = (void *) priv->rssi_db->data;
844 for (i = 0; i < priv->rssi_db->entries; i++)
845 *(dst++) = (s16) le16_to_cpu(*(src++));
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))
853 priv->output_limit = p54_convert_db(pda, data_len);
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))
860 priv->curve_data = p54_convert_db(pda, data_len);
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 "
878 crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2);
879 entry = (void *)entry + (entry_len + 1) * 2;
882 wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n");
887 if (!synth || !priv->iq_autocal || !priv->output_limit ||
889 wiphy_err(dev->wiphy,
890 "not all required entries found in eeprom!\n");
895 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
897 err = p54_generate_channel_lists(dev);
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;
914 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
915 u8 perm_addr[ETH_ALEN];
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);
923 priv->cur_rssi = &p54_rssi_default;
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]);
932 kfree(priv->iq_autocal);
933 kfree(priv->output_limit);
934 kfree(priv->curve_data);
935 kfree(priv->rssi_db);
937 priv->iq_autocal = NULL;
938 priv->output_limit = NULL;
939 priv->curve_data = NULL;
940 priv->rssi_db = NULL;
943 wiphy_err(dev->wiphy, "eeprom parse failed!\n");
946 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
948 int p54_read_eeprom(struct ieee80211_hw *dev)
950 struct p54_common *priv = dev->priv;
951 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
955 maxblocksize = EEPROM_READBACK_LEN;
956 if (priv->fw_var >= 0x509)
961 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
962 if (unlikely(!eeprom))
965 while (eeprom_size) {
966 blocksize = min(eeprom_size, maxblocksize);
967 ret = p54_download_eeprom(priv, eeprom + offset,
973 eeprom_size -= blocksize;
976 ret = p54_parse_eeprom(dev, eeprom, offset);
981 EXPORT_SYMBOL_GPL(p54_read_eeprom);