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p54: disable channels with incomplete calibration data sets
[wandboard.git] / drivers / net / wireless / p54 / eeprom.c
blob8e3818f6832e12987b6294eb4fdb304e0454ede1
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);
WandBoard kernel