Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
[linux-2.6.git] / 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 -EINVAL;
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                         continue;
162                 }
163
164                 tmp->channels[j].band = list->channels[i].band;
165                 tmp->channels[j].center_freq = list->channels[i].freq;
166                 j++;
167         }
168
169         if (j == 0) {
170                 printk(KERN_ERR "%s: Disabling totally damaged %s band.\n",
171                        wiphy_name(dev->wiphy), (band == IEEE80211_BAND_2GHZ) ?
172                        "2 GHz" : "5 GHz");
173
174                 ret = -ENODATA;
175                 goto err_out;
176         }
177
178         tmp->n_channels = j;
179         old = priv->band_table[band];
180         priv->band_table[band] = tmp;
181         if (old) {
182                 kfree(old->channels);
183                 kfree(old);
184         }
185
186         return 0;
187
188 err_out:
189         if (tmp) {
190                 kfree(tmp->channels);
191                 kfree(tmp);
192         }
193
194         return ret;
195 }
196
197 static void p54_update_channel_param(struct p54_channel_list *list,
198                                      u16 freq, u16 data)
199 {
200         int band, i;
201
202         /*
203          * usually all lists in the eeprom are mostly sorted.
204          * so it's very likely that the entry we are looking for
205          * is right at the end of the list
206          */
207         for (i = list->entries; i >= 0; i--) {
208                 if (freq == list->channels[i].freq) {
209                         list->channels[i].data |= data;
210                         break;
211                 }
212         }
213
214         if ((i < 0) && (list->entries < list->max_entries)) {
215                 /* entry does not exist yet. Initialize a new one. */
216                 band = p54_get_band_from_freq(freq);
217
218                 /*
219                  * filter out frequencies which don't belong into
220                  * any supported band.
221                  */
222                 if (band < 0)
223                         return ;
224
225                 i = list->entries++;
226                 list->band_channel_num[band]++;
227
228                 list->channels[i].freq = freq;
229                 list->channels[i].data = data;
230                 list->channels[i].band = band;
231                 list->channels[i].index = ieee80211_frequency_to_channel(freq);
232                 /* TODO: parse output_limit and fill max_power */
233         }
234 }
235
236 static int p54_generate_channel_lists(struct ieee80211_hw *dev)
237 {
238         struct p54_common *priv = dev->priv;
239         struct p54_channel_list *list;
240         unsigned int i, j, max_channel_num;
241         int ret = 0;
242         u16 freq;
243
244         if ((priv->iq_autocal_len != priv->curve_data->entries) ||
245             (priv->iq_autocal_len != priv->output_limit->entries))
246                 printk(KERN_ERR "%s: Unsupported or damaged EEPROM detected. "
247                                 "You may not be able to use all channels.\n",
248                                 wiphy_name(dev->wiphy));
249
250         max_channel_num = max_t(unsigned int, priv->output_limit->entries,
251                                 priv->iq_autocal_len);
252         max_channel_num = max_t(unsigned int, max_channel_num,
253                                 priv->curve_data->entries);
254
255         list = kzalloc(sizeof(*list), GFP_KERNEL);
256         if (!list) {
257                 ret = -ENOMEM;
258                 goto free;
259         }
260
261         list->max_entries = max_channel_num;
262         list->channels = kzalloc(sizeof(struct p54_channel_entry) *
263                                  max_channel_num, GFP_KERNEL);
264         if (!list->channels)
265                 goto free;
266
267         for (i = 0; i < max_channel_num; i++) {
268                 if (i < priv->iq_autocal_len) {
269                         freq = le16_to_cpu(priv->iq_autocal[i].freq);
270                         p54_update_channel_param(list, freq, CHAN_HAS_CAL);
271                 }
272
273                 if (i < priv->output_limit->entries) {
274                         freq = le16_to_cpup((__le16 *) (i *
275                                             priv->output_limit->entry_size +
276                                             priv->output_limit->offset +
277                                             priv->output_limit->data));
278
279                         p54_update_channel_param(list, freq, CHAN_HAS_LIMIT);
280                 }
281
282                 if (i < priv->curve_data->entries) {
283                         freq = le16_to_cpup((__le16 *) (i *
284                                             priv->curve_data->entry_size +
285                                             priv->curve_data->offset +
286                                             priv->curve_data->data));
287
288                         p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
289                 }
290         }
291
292         /* sort the list by the channel index */
293         sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
294              p54_compare_channels, NULL);
295
296         for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) {
297                 if (p54_generate_band(dev, list, i) == 0)
298                         j++;
299         }
300         if (j == 0) {
301                 /* no useable band available. */
302                 ret = -EINVAL;
303         }
304
305 free:
306         if (list) {
307                 kfree(list->channels);
308                 kfree(list);
309         }
310
311         return ret;
312 }
313
314 static int p54_convert_rev0(struct ieee80211_hw *dev,
315                             struct pda_pa_curve_data *curve_data)
316 {
317         struct p54_common *priv = dev->priv;
318         struct p54_pa_curve_data_sample *dst;
319         struct pda_pa_curve_data_sample_rev0 *src;
320         size_t cd_len = sizeof(*curve_data) +
321                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
322                  curve_data->channels;
323         unsigned int i, j;
324         void *source, *target;
325
326         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
327                                    GFP_KERNEL);
328         if (!priv->curve_data)
329                 return -ENOMEM;
330
331         priv->curve_data->entries = curve_data->channels;
332         priv->curve_data->entry_size = sizeof(__le16) +
333                 sizeof(*dst) * curve_data->points_per_channel;
334         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
335         priv->curve_data->len = cd_len;
336         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
337         source = curve_data->data;
338         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
339         for (i = 0; i < curve_data->channels; i++) {
340                 __le16 *freq = source;
341                 source += sizeof(__le16);
342                 *((__le16 *)target) = *freq;
343                 target += sizeof(__le16);
344                 for (j = 0; j < curve_data->points_per_channel; j++) {
345                         dst = target;
346                         src = source;
347
348                         dst->rf_power = src->rf_power;
349                         dst->pa_detector = src->pa_detector;
350                         dst->data_64qam = src->pcv;
351                         /* "invent" the points for the other modulations */
352 #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
353                         dst->data_16qam = SUB(src->pcv, 12);
354                         dst->data_qpsk = SUB(dst->data_16qam, 12);
355                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
356                         dst->data_barker = SUB(dst->data_bpsk, 14);
357 #undef SUB
358                         target += sizeof(*dst);
359                         source += sizeof(*src);
360                 }
361         }
362
363         return 0;
364 }
365
366 static int p54_convert_rev1(struct ieee80211_hw *dev,
367                             struct pda_pa_curve_data *curve_data)
368 {
369         struct p54_common *priv = dev->priv;
370         struct p54_pa_curve_data_sample *dst;
371         struct pda_pa_curve_data_sample_rev1 *src;
372         size_t cd_len = sizeof(*curve_data) +
373                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
374                  curve_data->channels;
375         unsigned int i, j;
376         void *source, *target;
377
378         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
379                                    GFP_KERNEL);
380         if (!priv->curve_data)
381                 return -ENOMEM;
382
383         priv->curve_data->entries = curve_data->channels;
384         priv->curve_data->entry_size = sizeof(__le16) +
385                 sizeof(*dst) * curve_data->points_per_channel;
386         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
387         priv->curve_data->len = cd_len;
388         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
389         source = curve_data->data;
390         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
391         for (i = 0; i < curve_data->channels; i++) {
392                 __le16 *freq = source;
393                 source += sizeof(__le16);
394                 *((__le16 *)target) = *freq;
395                 target += sizeof(__le16);
396                 for (j = 0; j < curve_data->points_per_channel; j++) {
397                         memcpy(target, source, sizeof(*src));
398
399                         target += sizeof(*dst);
400                         source += sizeof(*src);
401                 }
402                 source++;
403         }
404
405         return 0;
406 }
407
408 static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
409         "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
410
411 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
412                              u16 type)
413 {
414         struct p54_common *priv = dev->priv;
415         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
416         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
417         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
418         int i;
419
420         if (len != (entry_size * num_entries)) {
421                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
422                                  " type:(%x) len:%d.\n",
423                        wiphy_name(dev->wiphy), type, len);
424
425                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
426                                      data, len);
427
428                 printk(KERN_ERR "%s: please report this issue.\n",
429                         wiphy_name(dev->wiphy));
430                 return;
431         }
432
433         for (i = 0; i < num_entries; i++) {
434                 struct pda_rssi_cal_entry *cal = data +
435                                                  (offset + i * entry_size);
436                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
437                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
438         }
439 }
440
441 static void p54_parse_default_country(struct ieee80211_hw *dev,
442                                       void *data, int len)
443 {
444         struct pda_country *country;
445
446         if (len != sizeof(*country)) {
447                 printk(KERN_ERR "%s: found possible invalid default country "
448                                 "eeprom entry. (entry size: %d)\n",
449                        wiphy_name(dev->wiphy), len);
450
451                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
452                                      data, len);
453
454                 printk(KERN_ERR "%s: please report this issue.\n",
455                         wiphy_name(dev->wiphy));
456                 return;
457         }
458
459         country = (struct pda_country *) data;
460         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
461                 regulatory_hint(dev->wiphy, country->alpha2);
462         else {
463                 /* TODO:
464                  * write a shared/common function that converts
465                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
466                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
467                  */
468         }
469 }
470
471 static int p54_convert_output_limits(struct ieee80211_hw *dev,
472                                      u8 *data, size_t len)
473 {
474         struct p54_common *priv = dev->priv;
475
476         if (len < 2)
477                 return -EINVAL;
478
479         if (data[0] != 0) {
480                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
481                        wiphy_name(dev->wiphy), data[0]);
482                 return -EINVAL;
483         }
484
485         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
486                 return -EINVAL;
487
488         priv->output_limit = kmalloc(data[1] *
489                 sizeof(struct pda_channel_output_limit) +
490                 sizeof(*priv->output_limit), GFP_KERNEL);
491
492         if (!priv->output_limit)
493                 return -ENOMEM;
494
495         priv->output_limit->offset = 0;
496         priv->output_limit->entries = data[1];
497         priv->output_limit->entry_size =
498                 sizeof(struct pda_channel_output_limit);
499         priv->output_limit->len = priv->output_limit->entry_size *
500                                   priv->output_limit->entries +
501                                   priv->output_limit->offset;
502
503         memcpy(priv->output_limit->data, &data[2],
504                data[1] * sizeof(struct pda_channel_output_limit));
505
506         return 0;
507 }
508
509 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
510                                                size_t total_len)
511 {
512         struct p54_cal_database *dst;
513         size_t payload_len, entries, entry_size, offset;
514
515         payload_len = le16_to_cpu(src->len);
516         entries = le16_to_cpu(src->entries);
517         entry_size = le16_to_cpu(src->entry_size);
518         offset = le16_to_cpu(src->offset);
519         if (((entries * entry_size + offset) != payload_len) ||
520              (payload_len + sizeof(*src) != total_len))
521                 return NULL;
522
523         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
524         if (!dst)
525                 return NULL;
526
527         dst->entries = entries;
528         dst->entry_size = entry_size;
529         dst->offset = offset;
530         dst->len = payload_len;
531
532         memcpy(dst->data, src->data, payload_len);
533         return dst;
534 }
535
536 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
537 {
538         struct p54_common *priv = dev->priv;
539         struct eeprom_pda_wrap *wrap;
540         struct pda_entry *entry;
541         unsigned int data_len, entry_len;
542         void *tmp;
543         int err;
544         u8 *end = (u8 *)eeprom + len;
545         u16 synth = 0;
546
547         wrap = (struct eeprom_pda_wrap *) eeprom;
548         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
549
550         /* verify that at least the entry length/code fits */
551         while ((u8 *)entry <= end - sizeof(*entry)) {
552                 entry_len = le16_to_cpu(entry->len);
553                 data_len = ((entry_len - 1) << 1);
554
555                 /* abort if entry exceeds whole structure */
556                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
557                         break;
558
559                 switch (le16_to_cpu(entry->code)) {
560                 case PDR_MAC_ADDRESS:
561                         if (data_len != ETH_ALEN)
562                                 break;
563                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
564                         break;
565                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
566                         if (priv->output_limit)
567                                 break;
568                         err = p54_convert_output_limits(dev, entry->data,
569                                                         data_len);
570                         if (err)
571                                 goto err;
572                         break;
573                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
574                         struct pda_pa_curve_data *curve_data =
575                                 (struct pda_pa_curve_data *)entry->data;
576                         if (data_len < sizeof(*curve_data)) {
577                                 err = -EINVAL;
578                                 goto err;
579                         }
580
581                         switch (curve_data->cal_method_rev) {
582                         case 0:
583                                 err = p54_convert_rev0(dev, curve_data);
584                                 break;
585                         case 1:
586                                 err = p54_convert_rev1(dev, curve_data);
587                                 break;
588                         default:
589                                 printk(KERN_ERR "%s: unknown curve data "
590                                                 "revision %d\n",
591                                                 wiphy_name(dev->wiphy),
592                                                 curve_data->cal_method_rev);
593                                 err = -ENODEV;
594                                 break;
595                         }
596                         if (err)
597                                 goto err;
598                         }
599                         break;
600                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
601                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
602                         if (!priv->iq_autocal) {
603                                 err = -ENOMEM;
604                                 goto err;
605                         }
606
607                         memcpy(priv->iq_autocal, entry->data, data_len);
608                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
609                         break;
610                 case PDR_DEFAULT_COUNTRY:
611                         p54_parse_default_country(dev, entry->data, data_len);
612                         break;
613                 case PDR_INTERFACE_LIST:
614                         tmp = entry->data;
615                         while ((u8 *)tmp < entry->data + data_len) {
616                                 struct exp_if *exp_if = tmp;
617                                 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))
618                                         synth = le16_to_cpu(exp_if->variant);
619                                 tmp += sizeof(*exp_if);
620                         }
621                         break;
622                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
623                         if (data_len < 2)
624                                 break;
625                         priv->version = *(u8 *)(entry->data + 1);
626                         break;
627                 case PDR_RSSI_LINEAR_APPROXIMATION:
628                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
629                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
630                         p54_parse_rssical(dev, entry->data, data_len,
631                                           le16_to_cpu(entry->code));
632                         break;
633                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
634                         __le16 *src = (void *) entry->data;
635                         s16 *dst = (void *) &priv->rssical_db;
636                         int i;
637
638                         if (data_len != sizeof(priv->rssical_db)) {
639                                 err = -EINVAL;
640                                 goto err;
641                         }
642                         for (i = 0; i < sizeof(priv->rssical_db) /
643                                         sizeof(*src); i++)
644                                 *(dst++) = (s16) le16_to_cpu(*(src++));
645                         }
646                         break;
647                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
648                         struct pda_custom_wrapper *pda = (void *) entry->data;
649                         if (priv->output_limit || data_len < sizeof(*pda))
650                                 break;
651                         priv->output_limit = p54_convert_db(pda, data_len);
652                         }
653                         break;
654                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
655                         struct pda_custom_wrapper *pda = (void *) entry->data;
656                         if (priv->curve_data || data_len < sizeof(*pda))
657                                 break;
658                         priv->curve_data = p54_convert_db(pda, data_len);
659                         }
660                         break;
661                 case PDR_END:
662                         /* make it overrun */
663                         entry_len = len;
664                         break;
665                 default:
666                         break;
667                 }
668
669                 entry = (void *)entry + (entry_len + 1)*2;
670         }
671
672         if (!synth || !priv->iq_autocal || !priv->output_limit ||
673             !priv->curve_data) {
674                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
675                         wiphy_name(dev->wiphy));
676                 err = -EINVAL;
677                 goto err;
678         }
679
680         err = p54_generate_channel_lists(dev);
681         if (err)
682                 goto err;
683
684         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
685         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
686                 p54_init_xbow_synth(priv);
687         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
688                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] =
689                         priv->band_table[IEEE80211_BAND_2GHZ];
690         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
691                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] =
692                         priv->band_table[IEEE80211_BAND_5GHZ];
693         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
694                 priv->rx_diversity_mask = 3;
695         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
696                 priv->tx_diversity_mask = 3;
697
698         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
699                 u8 perm_addr[ETH_ALEN];
700
701                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
702                         wiphy_name(dev->wiphy));
703                 random_ether_addr(perm_addr);
704                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
705         }
706
707         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
708                 wiphy_name(dev->wiphy), dev->wiphy->perm_addr, priv->version,
709                 p54_rf_chips[priv->rxhw]);
710
711         return 0;
712
713 err:
714         kfree(priv->iq_autocal);
715         kfree(priv->output_limit);
716         kfree(priv->curve_data);
717         priv->iq_autocal = NULL;
718         priv->output_limit = NULL;
719         priv->curve_data = NULL;
720
721         printk(KERN_ERR "%s: eeprom parse failed!\n",
722                 wiphy_name(dev->wiphy));
723         return err;
724 }
725 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
726
727 int p54_read_eeprom(struct ieee80211_hw *dev)
728 {
729         struct p54_common *priv = dev->priv;
730         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
731         int ret = -ENOMEM;
732         void *eeprom;
733
734         maxblocksize = EEPROM_READBACK_LEN;
735         if (priv->fw_var >= 0x509)
736                 maxblocksize -= 0xc;
737         else
738                 maxblocksize -= 0x4;
739
740         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
741         if (unlikely(!eeprom))
742                 goto free;
743
744         while (eeprom_size) {
745                 blocksize = min(eeprom_size, maxblocksize);
746                 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
747                                           offset, blocksize);
748                 if (unlikely(ret))
749                         goto free;
750
751                 offset += blocksize;
752                 eeprom_size -= blocksize;
753         }
754
755         ret = p54_parse_eeprom(dev, eeprom, offset);
756 free:
757         kfree(eeprom);
758         return ret;
759 }
760 EXPORT_SYMBOL_GPL(p54_read_eeprom);