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p54: p54_generate_band cleanup
[deliverable/linux.git] / drivers / net / wireless / p54 / eeprom.c
CommitLineData
4c8a32f5
CL		 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>
1a9b6679 22#include <linux/sort.h>
5a0e3ad6 23#include <linux/slab.h>
4c8a32f5
CL		 24
25#include <net/mac80211.h>
d7eb50c0 26#include <linux/crc-ccitt.h>
4c8a32f5
CL		 27
28#include "p54.h"
29#include "eeprom.h"
30#include "lmac.h"
31
32static struct ieee80211_rate p54_bgrates[] = {
33 { .bitrate = 10, .hw_value = 0, },
34 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
35 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
36 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
37 { .bitrate = 60, .hw_value = 4, },
38 { .bitrate = 90, .hw_value = 5, },
39 { .bitrate = 120, .hw_value = 6, },
40 { .bitrate = 180, .hw_value = 7, },
41 { .bitrate = 240, .hw_value = 8, },
42 { .bitrate = 360, .hw_value = 9, },
43 { .bitrate = 480, .hw_value = 10, },
44 { .bitrate = 540, .hw_value = 11, },
45};
46
4c8a32f5
CL		 47static struct ieee80211_rate p54_arates[] = {
48 { .bitrate = 60, .hw_value = 4, },
49 { .bitrate = 90, .hw_value = 5, },
50 { .bitrate = 120, .hw_value = 6, },
51 { .bitrate = 180, .hw_value = 7, },
52 { .bitrate = 240, .hw_value = 8, },
53 { .bitrate = 360, .hw_value = 9, },
54 { .bitrate = 480, .hw_value = 10, },
55 { .bitrate = 540, .hw_value = 11, },
56};
57
1a9b6679
CL		 58#define CHAN_HAS_CAL BIT(0)
59#define CHAN_HAS_LIMIT BIT(1)
60#define CHAN_HAS_CURVE BIT(2)
61#define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE)
62
63struct p54_channel_entry {
64 u16 freq;
65 u16 data;
66 int index;
67 enum ieee80211_band band;
4c8a32f5
CL		 68};
69
1a9b6679
CL		 70struct p54_channel_list {
71 struct p54_channel_entry *channels;
72 size_t entries;
73 size_t max_entries;
74 size_t band_channel_num[IEEE80211_NUM_BANDS];
4c8a32f5
CL		 75};
76
1a9b6679
CL		 77static int p54_get_band_from_freq(u16 freq)
78{
79 /* FIXME: sync these values with the 802.11 spec */
80
81 if ((freq >= 2412) && (freq <= 2484))
82 return IEEE80211_BAND_2GHZ;
83
84 if ((freq >= 4920) && (freq <= 5825))
85 return IEEE80211_BAND_5GHZ;
86
87 return -1;
88}
89
90static int p54_compare_channels(const void *_a,
91 const void *_b)
92{
93 const struct p54_channel_entry *a = _a;
94 const struct p54_channel_entry *b = _b;
95
192abece 96 return a->freq - b->freq;
1a9b6679
CL		 97}
98
99static int p54_fill_band_bitrates(struct ieee80211_hw *dev,
100 struct ieee80211_supported_band *band_entry,
101 enum ieee80211_band band)
102{
103 /* TODO: generate rate array dynamically */
104
105 switch (band) {
106 case IEEE80211_BAND_2GHZ:
107 band_entry->bitrates = p54_bgrates;
108 band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates);
109 break;
110 case IEEE80211_BAND_5GHZ:
111 band_entry->bitrates = p54_arates;
112 band_entry->n_bitrates = ARRAY_SIZE(p54_arates);
113 break;
114 default:
115 return -EINVAL;
116 }
117
118 return 0;
119}
120
121static int p54_generate_band(struct ieee80211_hw *dev,
122 struct p54_channel_list *list,
123 enum ieee80211_band band)
124{
125 struct p54_common *priv = dev->priv;
126 struct ieee80211_supported_band *tmp, *old;
127 unsigned int i, j;
128 int ret = -ENOMEM;
129
130 if ((!list->entries) || (!list->band_channel_num[band]))
93a59d75 131 return -EINVAL;
1a9b6679
CL		 132
133 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
134 if (!tmp)
135 goto err_out;
136
137 tmp->channels = kzalloc(sizeof(struct ieee80211_channel) *
138 list->band_channel_num[band], GFP_KERNEL);
139 if (!tmp->channels)
140 goto err_out;
141
142 ret = p54_fill_band_bitrates(dev, tmp, band);
143 if (ret)
144 goto err_out;
145
146 for (i = 0, j = 0; (j < list->band_channel_num[band]) &&
147 (i < list->entries); i++) {
a3162eed 148 struct p54_channel_entry *chan = &list->channels[i];
1a9b6679 149
a3162eed 150 if (chan->band != band)
1a9b6679
CL		 151 continue;
152
a3162eed
CL		 153 if (chan->data != CHAN_HAS_ALL) {
154 wiphy_err(dev->wiphy, "%s%s%s is/are missing for "
155 "channel:%d [%d MHz].\n",
156 (chan->data & CHAN_HAS_CAL ? "" :
c96c31e4 157 " [iqauto calibration data]"),
a3162eed 158 (chan->data & CHAN_HAS_LIMIT ? "" :
c96c31e4 159 " [output power limits]"),
a3162eed 160 (chan->data & CHAN_HAS_CURVE ? "" :
c96c31e4 161 " [curve data]"),
a3162eed 162 chan->index, chan->freq);
93a59d75 163 continue;
1a9b6679
CL		 164 }
165
a3162eed
CL		 166 tmp->channels[j].band = chan->band;
167 tmp->channels[j].center_freq = chan->freq;
1a9b6679
CL		 168 j++;
169 }
170
93a59d75 171 if (j == 0) {
5db55844 172 wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n",
c96c31e4 173 (band == IEEE80211_BAND_2GHZ) ? 2 : 5);
93a59d75
CL		 174
175 ret = -ENODATA;
176 goto err_out;
177 }
178
179 tmp->n_channels = j;
1a9b6679
CL		 180 old = priv->band_table[band];
181 priv->band_table[band] = tmp;
182 if (old) {
183 kfree(old->channels);
184 kfree(old);
185 }
186
187 return 0;
188
189err_out:
190 if (tmp) {
191 kfree(tmp->channels);
192 kfree(tmp);
193 }
194
195 return ret;
196}
197
198static void p54_update_channel_param(struct p54_channel_list *list,
199 u16 freq, u16 data)
200{
201 int band, i;
202
203 /*
204 * usually all lists in the eeprom are mostly sorted.
205 * so it's very likely that the entry we are looking for
206 * is right at the end of the list
207 */
208 for (i = list->entries; i >= 0; i--) {
209 if (freq == list->channels[i].freq) {
210 list->channels[i].data |= data;
211 break;
212 }
213 }
214
215 if ((i < 0) && (list->entries < list->max_entries)) {
216 /* entry does not exist yet. Initialize a new one. */
217 band = p54_get_band_from_freq(freq);
218
219 /*
220 * filter out frequencies which don't belong into
221 * any supported band.
222 */
223 if (band < 0)
224 return ;
225
226 i = list->entries++;
227 list->band_channel_num[band]++;
228
229 list->channels[i].freq = freq;
230 list->channels[i].data = data;
231 list->channels[i].band = band;
232 list->channels[i].index = ieee80211_frequency_to_channel(freq);
233 /* TODO: parse output_limit and fill max_power */
234 }
235}
236
237static int p54_generate_channel_lists(struct ieee80211_hw *dev)
238{
239 struct p54_common *priv = dev->priv;
240 struct p54_channel_list *list;
241 unsigned int i, j, max_channel_num;
93a59d75 242 int ret = 0;
1a9b6679
CL		 243 u16 freq;
244
245 if ((priv->iq_autocal_len != priv->curve_data->entries) ||
246 (priv->iq_autocal_len != priv->output_limit->entries))
c96c31e4
JP		 247 wiphy_err(dev->wiphy,
248 "Unsupported or damaged EEPROM detected. "
249 "You may not be able to use all channels.\n");
1a9b6679
CL		 250
251 max_channel_num = max_t(unsigned int, priv->output_limit->entries,
252 priv->iq_autocal_len);
253 max_channel_num = max_t(unsigned int, max_channel_num,
254 priv->curve_data->entries);
255
256 list = kzalloc(sizeof(*list), GFP_KERNEL);
93a59d75
CL		 257 if (!list) {
258 ret = -ENOMEM;
1a9b6679 259 goto free;
93a59d75 260 }
1a9b6679
CL		 261
262 list->max_entries = max_channel_num;
263 list->channels = kzalloc(sizeof(struct p54_channel_entry) *
264 max_channel_num, GFP_KERNEL);
0d91f22b
JL		 265 if (!list->channels) {
266 ret = -ENOMEM;
1a9b6679 267 goto free;
0d91f22b 268 }
1a9b6679
CL		 269
270 for (i = 0; i < max_channel_num; i++) {
271 if (i < priv->iq_autocal_len) {
272 freq = le16_to_cpu(priv->iq_autocal[i].freq);
273 p54_update_channel_param(list, freq, CHAN_HAS_CAL);
274 }
275
276 if (i < priv->output_limit->entries) {
277 freq = le16_to_cpup((__le16 *) (i *
278 priv->output_limit->entry_size +
279 priv->output_limit->offset +
280 priv->output_limit->data));
281
282 p54_update_channel_param(list, freq, CHAN_HAS_LIMIT);
283 }
284
285 if (i < priv->curve_data->entries) {
286 freq = le16_to_cpup((__le16 *) (i *
287 priv->curve_data->entry_size +
288 priv->curve_data->offset +
289 priv->curve_data->data));
290
291 p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
292 }
293 }
294
192abece 295 /* sort the channel list by frequency */
1a9b6679
CL		 296 sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
297 p54_compare_channels, NULL);
298
299 for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) {
93a59d75 300 if (p54_generate_band(dev, list, i) == 0)
1a9b6679 301 j++;
1a9b6679
CL		 302 }
303 if (j == 0) {
304 /* no useable band available. */
305 ret = -EINVAL;
306 }
307
308free:
309 if (list) {
310 kfree(list->channels);
311 kfree(list);
312 }
313
314 return ret;
315}
316
4c8a32f5
CL		 317static int p54_convert_rev0(struct ieee80211_hw *dev,
318 struct pda_pa_curve_data *curve_data)
319{
320 struct p54_common *priv = dev->priv;
321 struct p54_pa_curve_data_sample *dst;
322 struct pda_pa_curve_data_sample_rev0 *src;
323 size_t cd_len = sizeof(*curve_data) +
324 (curve_data->points_per_channel*sizeof(*dst) + 2) *
325 curve_data->channels;
326 unsigned int i, j;
327 void *source, *target;
328
329 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
330 GFP_KERNEL);
331 if (!priv->curve_data)
332 return -ENOMEM;
333
334 priv->curve_data->entries = curve_data->channels;
335 priv->curve_data->entry_size = sizeof(__le16) +
336 sizeof(*dst) * curve_data->points_per_channel;
337 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
338 priv->curve_data->len = cd_len;
339 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
340 source = curve_data->data;
341 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
342 for (i = 0; i < curve_data->channels; i++) {
343 __le16 *freq = source;
344 source += sizeof(__le16);
345 *((__le16 *)target) = *freq;
346 target += sizeof(__le16);
347 for (j = 0; j < curve_data->points_per_channel; j++) {
348 dst = target;
349 src = source;
350
351 dst->rf_power = src->rf_power;
352 dst->pa_detector = src->pa_detector;
353 dst->data_64qam = src->pcv;
354 /* "invent" the points for the other modulations */
355#define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
356 dst->data_16qam = SUB(src->pcv, 12);
357 dst->data_qpsk = SUB(dst->data_16qam, 12);
358 dst->data_bpsk = SUB(dst->data_qpsk, 12);
359 dst->data_barker = SUB(dst->data_bpsk, 14);
360#undef SUB
361 target += sizeof(*dst);
362 source += sizeof(*src);
363 }
364 }
365
366 return 0;
367}
368
369static int p54_convert_rev1(struct ieee80211_hw *dev,
370 struct pda_pa_curve_data *curve_data)
371{
372 struct p54_common *priv = dev->priv;
373 struct p54_pa_curve_data_sample *dst;
374 struct pda_pa_curve_data_sample_rev1 *src;
375 size_t cd_len = sizeof(*curve_data) +
376 (curve_data->points_per_channel*sizeof(*dst) + 2) *
377 curve_data->channels;
378 unsigned int i, j;
379 void *source, *target;
380
381 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
382 GFP_KERNEL);
383 if (!priv->curve_data)
384 return -ENOMEM;
385
386 priv->curve_data->entries = curve_data->channels;
387 priv->curve_data->entry_size = sizeof(__le16) +
388 sizeof(*dst) * curve_data->points_per_channel;
389 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
390 priv->curve_data->len = cd_len;
391 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
392 source = curve_data->data;
393 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
394 for (i = 0; i < curve_data->channels; i++) {
395 __le16 *freq = source;
396 source += sizeof(__le16);
397 *((__le16 *)target) = *freq;
398 target += sizeof(__le16);
399 for (j = 0; j < curve_data->points_per_channel; j++) {
400 memcpy(target, source, sizeof(*src));
401
402 target += sizeof(*dst);
403 source += sizeof(*src);
404 }
405 source++;
406 }
407
408 return 0;
409}
410
411static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
412 "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
413
414static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
415 u16 type)
416{
417 struct p54_common *priv = dev->priv;
418 int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
419 int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
420 int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
421 int i;
422
423 if (len != (entry_size * num_entries)) {
c96c31e4
JP		 424 wiphy_err(dev->wiphy,
425 "unknown rssi calibration data packing type:(%x) len:%d.\n",
426 type, len);
4c8a32f5
CL		 427
428 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
429 data, len);
430
c96c31e4 431 wiphy_err(dev->wiphy, "please report this issue.\n");
4c8a32f5
CL		 432 return;
433 }
434
435 for (i = 0; i < num_entries; i++) {
436 struct pda_rssi_cal_entry *cal = data +
437 (offset + i * entry_size);
438 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
439 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
440 }
441}
442
443static void p54_parse_default_country(struct ieee80211_hw *dev,
444 void *data, int len)
445{
446 struct pda_country *country;
447
448 if (len != sizeof(*country)) {
c96c31e4
JP		 449 wiphy_err(dev->wiphy,
450 "found possible invalid default country eeprom entry. (entry size: %d)\n",
451 len);
4c8a32f5
CL		 452
453 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
454 data, len);
455
c96c31e4 456 wiphy_err(dev->wiphy, "please report this issue.\n");
4c8a32f5
CL		 457 return;
458 }
459
460 country = (struct pda_country *) data;
461 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
462 regulatory_hint(dev->wiphy, country->alpha2);
463 else {
464 /* TODO:
465 * write a shared/common function that converts
466 * "Regulatory domain codes" (802.11-2007 14.8.2.2)
467 * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
468 */
469 }
470}
471
472static int p54_convert_output_limits(struct ieee80211_hw *dev,
473 u8 *data, size_t len)
474{
475 struct p54_common *priv = dev->priv;
476
477 if (len < 2)
478 return -EINVAL;
479
480 if (data[0] != 0) {
c96c31e4
JP		 481 wiphy_err(dev->wiphy, "unknown output power db revision:%x\n",
482 data[0]);
4c8a32f5
CL		 483 return -EINVAL;
484 }
485
486 if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
487 return -EINVAL;
488
489 priv->output_limit = kmalloc(data[1] *
490 sizeof(struct pda_channel_output_limit) +
491 sizeof(*priv->output_limit), GFP_KERNEL);
492
493 if (!priv->output_limit)
494 return -ENOMEM;
495
496 priv->output_limit->offset = 0;
497 priv->output_limit->entries = data[1];
498 priv->output_limit->entry_size =
499 sizeof(struct pda_channel_output_limit);
500 priv->output_limit->len = priv->output_limit->entry_size *
501 priv->output_limit->entries +
502 priv->output_limit->offset;
503
504 memcpy(priv->output_limit->data, &data[2],
505 data[1] * sizeof(struct pda_channel_output_limit));
506
507 return 0;
508}
509
510static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
511 size_t total_len)
512{
513 struct p54_cal_database *dst;
514 size_t payload_len, entries, entry_size, offset;
515
516 payload_len = le16_to_cpu(src->len);
517 entries = le16_to_cpu(src->entries);
518 entry_size = le16_to_cpu(src->entry_size);
519 offset = le16_to_cpu(src->offset);
520 if (((entries * entry_size + offset) != payload_len) ||
521 (payload_len + sizeof(*src) != total_len))
522 return NULL;
523
524 dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
525 if (!dst)
526 return NULL;
527
528 dst->entries = entries;
529 dst->entry_size = entry_size;
530 dst->offset = offset;
531 dst->len = payload_len;
532
533 memcpy(dst->data, src->data, payload_len);
534 return dst;
535}
536
537int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
538{
539 struct p54_common *priv = dev->priv;
e6a3f551 540 struct eeprom_pda_wrap *wrap;
4c8a32f5
CL		 541 struct pda_entry *entry;
542 unsigned int data_len, entry_len;
543 void *tmp;
544 int err;
545 u8 *end = (u8 *)eeprom + len;
546 u16 synth = 0;
d7eb50c0 547 u16 crc16 = ~0;
4c8a32f5
CL		 548
549 wrap = (struct eeprom_pda_wrap *) eeprom;
550 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
551
552 /* verify that at least the entry length/code fits */
553 while ((u8 *)entry <= end - sizeof(*entry)) {
554 entry_len = le16_to_cpu(entry->len);
555 data_len = ((entry_len - 1) << 1);
556
557 /* abort if entry exceeds whole structure */
558 if ((u8 *)entry + sizeof(*entry) + data_len > end)
559 break;
560
561 switch (le16_to_cpu(entry->code)) {
562 case PDR_MAC_ADDRESS:
563 if (data_len != ETH_ALEN)
564 break;
565 SET_IEEE80211_PERM_ADDR(dev, entry->data);
566 break;
567 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
568 if (priv->output_limit)
569 break;
570 err = p54_convert_output_limits(dev, entry->data,
571 data_len);
572 if (err)
573 goto err;
574 break;
575 case PDR_PRISM_PA_CAL_CURVE_DATA: {
576 struct pda_pa_curve_data *curve_data =
577 (struct pda_pa_curve_data *)entry->data;
578 if (data_len < sizeof(*curve_data)) {
579 err = -EINVAL;
580 goto err;
581 }
582
583 switch (curve_data->cal_method_rev) {
584 case 0:
585 err = p54_convert_rev0(dev, curve_data);
586 break;
587 case 1:
588 err = p54_convert_rev1(dev, curve_data);
589 break;
590 default:
c96c31e4
JP		 591 wiphy_err(dev->wiphy,
592 "unknown curve data revision %d\n",
593 curve_data->cal_method_rev);
4c8a32f5
CL		 594 err = -ENODEV;
595 break;
596 }
597 if (err)
598 goto err;
599 }
600 break;
601 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
27b81bbe
JL		 602 priv->iq_autocal = kmemdup(entry->data, data_len,
603 GFP_KERNEL);
4c8a32f5
CL		 604 if (!priv->iq_autocal) {
605 err = -ENOMEM;
606 goto err;
607 }
608
4c8a32f5
CL		 609 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
610 break;
611 case PDR_DEFAULT_COUNTRY:
612 p54_parse_default_country(dev, entry->data, data_len);
613 break;
614 case PDR_INTERFACE_LIST:
615 tmp = entry->data;
616 while ((u8 *)tmp < entry->data + data_len) {
617 struct exp_if *exp_if = tmp;
618 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))
619 synth = le16_to_cpu(exp_if->variant);
620 tmp += sizeof(*exp_if);
621 }
622 break;
623 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
624 if (data_len < 2)
625 break;
626 priv->version = *(u8 *)(entry->data + 1);
627 break;
628 case PDR_RSSI_LINEAR_APPROXIMATION:
629 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
630 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
631 p54_parse_rssical(dev, entry->data, data_len,
632 le16_to_cpu(entry->code));
633 break;
634 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
635 __le16 *src = (void *) entry->data;
636 s16 *dst = (void *) &priv->rssical_db;
637 int i;
638
639 if (data_len != sizeof(priv->rssical_db)) {
640 err = -EINVAL;
641 goto err;
642 }
643 for (i = 0; i < sizeof(priv->rssical_db) /
644 sizeof(*src); i++)
645 *(dst++) = (s16) le16_to_cpu(*(src++));
646 }
647 break;
648 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
649 struct pda_custom_wrapper *pda = (void *) entry->data;
650 if (priv->output_limit || data_len < sizeof(*pda))
651 break;
652 priv->output_limit = p54_convert_db(pda, data_len);
653 }
654 break;
655 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
656 struct pda_custom_wrapper *pda = (void *) entry->data;
657 if (priv->curve_data || data_len < sizeof(*pda))
658 break;
659 priv->curve_data = p54_convert_db(pda, data_len);
660 }
661 break;
662 case PDR_END:
d7eb50c0
CL		 663 crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry));
664 if (crc16 != le16_to_cpup((__le16 *)entry->data)) {
665 wiphy_err(dev->wiphy, "eeprom failed checksum "
666 "test!\n");
667 err = -ENOMSG;
668 goto err;
669 } else {
670 goto good_eeprom;
671 }
4c8a32f5
CL		 672 break;
673 default:
674 break;
675 }
676
d7eb50c0
CL		 677 crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2);
678 entry = (void *)entry + (entry_len + 1) * 2;
4c8a32f5
CL		 679 }
680
d7eb50c0
CL		 681 wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n");
682 err = -ENODATA;
683 goto err;
684
685good_eeprom:
4c8a32f5
CL		 686 if (!synth || !priv->iq_autocal || !priv->output_limit ||
687 !priv->curve_data) {
c96c31e4
JP		 688 wiphy_err(dev->wiphy,
689 "not all required entries found in eeprom!\n");
4c8a32f5
CL		 690 err = -EINVAL;
691 goto err;
692 }
693
1a9b6679
CL		 694 err = p54_generate_channel_lists(dev);
695 if (err)
696 goto err;
697
4c8a32f5
CL		 698 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
699 if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
700 p54_init_xbow_synth(priv);
701 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
1a9b6679
CL		 702 dev->wiphy->bands[IEEE80211_BAND_2GHZ] =
703 priv->band_table[IEEE80211_BAND_2GHZ];
4c8a32f5 704 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
1a9b6679
CL		 705 dev->wiphy->bands[IEEE80211_BAND_5GHZ] =
706 priv->band_table[IEEE80211_BAND_5GHZ];
4c8a32f5
CL		 707 if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
708 priv->rx_diversity_mask = 3;
709 if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
710 priv->tx_diversity_mask = 3;
711
712 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
713 u8 perm_addr[ETH_ALEN];
714
c96c31e4 715 wiphy_warn(dev->wiphy,
5db55844 716 "Invalid hwaddr! Using randomly generated MAC addr\n");
4c8a32f5
CL		 717 random_ether_addr(perm_addr);
718 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
719 }
720
5db55844 721 wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n",
c96c31e4
JP		 722 dev->wiphy->perm_addr, priv->version,
723 p54_rf_chips[priv->rxhw]);
4c8a32f5
CL		 724
725 return 0;
726
727err:
728 kfree(priv->iq_autocal);
729 kfree(priv->output_limit);
730 kfree(priv->curve_data);
731 priv->iq_autocal = NULL;
732 priv->output_limit = NULL;
733 priv->curve_data = NULL;
734
c96c31e4 735 wiphy_err(dev->wiphy, "eeprom parse failed!\n");
4c8a32f5
CL		 736 return err;
737}
738EXPORT_SYMBOL_GPL(p54_parse_eeprom);
739
740int p54_read_eeprom(struct ieee80211_hw *dev)
741{
742 struct p54_common *priv = dev->priv;
743 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
744 int ret = -ENOMEM;
e6a3f551 745 void *eeprom;
4c8a32f5
CL		 746
747 maxblocksize = EEPROM_READBACK_LEN;
748 if (priv->fw_var >= 0x509)
749 maxblocksize -= 0xc;
750 else
751 maxblocksize -= 0x4;
752
753 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
754 if (unlikely(!eeprom))
755 goto free;
756
757 while (eeprom_size) {
758 blocksize = min(eeprom_size, maxblocksize);
759 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
760 offset, blocksize);
761 if (unlikely(ret))
762 goto free;
763
764 offset += blocksize;
765 eeprom_size -= blocksize;
766 }
767
768 ret = p54_parse_eeprom(dev, eeprom, offset);
769free:
770 kfree(eeprom);
771 return ret;
772}
773EXPORT_SYMBOL_GPL(p54_read_eeprom);
Linux kernel - Deliverables
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