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p54: sort channel list by frequency instead of channel index
[linux-block.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++) {
148
149 if (list->channels[i].band != band)
150 continue;
151
152 if (list->channels[i].data != CHAN_HAS_ALL) {
c96c31e4
JP		 153 wiphy_err(dev->wiphy,
154 "%s%s%s is/are missing for channel:%d [%d MHz].\n",
155 (list->channels[i].data & CHAN_HAS_CAL ? "" :
156 " [iqauto calibration data]"),
157 (list->channels[i].data & CHAN_HAS_LIMIT ? "" :
158 " [output power limits]"),
159 (list->channels[i].data & CHAN_HAS_CURVE ? "" :
160 " [curve data]"),
161 list->channels[i].index, list->channels[i].freq);
93a59d75 162 continue;
1a9b6679
CL		 163 }
164
165 tmp->channels[j].band = list->channels[i].band;
166 tmp->channels[j].center_freq = list->channels[i].freq;
167 j++;
168 }
169
93a59d75 170 if (j == 0) {
5db55844 171 wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n",
c96c31e4 172 (band == IEEE80211_BAND_2GHZ) ? 2 : 5);
93a59d75
CL		 173
174 ret = -ENODATA;
175 goto err_out;
176 }
177
178 tmp->n_channels = j;
1a9b6679
CL		 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
188err_out:
189 if (tmp) {
190 kfree(tmp->channels);
191 kfree(tmp);
192 }
193
194 return ret;
195}
196
197static 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
236static 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;
93a59d75 241 int ret = 0;
1a9b6679
CL		 242 u16 freq;
243
244 if ((priv->iq_autocal_len != priv->curve_data->entries) ||
245 (priv->iq_autocal_len != priv->output_limit->entries))
c96c31e4
JP		 246 wiphy_err(dev->wiphy,
247 "Unsupported or damaged EEPROM detected. "
248 "You may not be able to use all channels.\n");
1a9b6679
CL		 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);
93a59d75
CL		 256 if (!list) {
257 ret = -ENOMEM;
1a9b6679 258 goto free;
93a59d75 259 }
1a9b6679
CL		 260
261 list->max_entries = max_channel_num;
262 list->channels = kzalloc(sizeof(struct p54_channel_entry) *
263 max_channel_num, GFP_KERNEL);
0d91f22b
JL		 264 if (!list->channels) {
265 ret = -ENOMEM;
1a9b6679 266 goto free;
0d91f22b 267 }
1a9b6679
CL		 268
269 for (i = 0; i < max_channel_num; i++) {
270 if (i < priv->iq_autocal_len) {
271 freq = le16_to_cpu(priv->iq_autocal[i].freq);
272 p54_update_channel_param(list, freq, CHAN_HAS_CAL);
273 }
274
275 if (i < priv->output_limit->entries) {
276 freq = le16_to_cpup((__le16 *) (i *
277 priv->output_limit->entry_size +
278 priv->output_limit->offset +
279 priv->output_limit->data));
280
281 p54_update_channel_param(list, freq, CHAN_HAS_LIMIT);
282 }
283
284 if (i < priv->curve_data->entries) {
285 freq = le16_to_cpup((__le16 *) (i *
286 priv->curve_data->entry_size +
287 priv->curve_data->offset +
288 priv->curve_data->data));
289
290 p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
291 }
292 }
293
192abece 294 /* sort the channel list by frequency */
1a9b6679
CL		 295 sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
296 p54_compare_channels, NULL);
297
298 for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) {
93a59d75 299 if (p54_generate_band(dev, list, i) == 0)
1a9b6679 300 j++;
1a9b6679
CL		 301 }
302 if (j == 0) {
303 /* no useable band available. */
304 ret = -EINVAL;
305 }
306
307free:
308 if (list) {
309 kfree(list->channels);
310 kfree(list);
311 }
312
313 return ret;
314}
315
4c8a32f5
CL		 316static int p54_convert_rev0(struct ieee80211_hw *dev,
317 struct pda_pa_curve_data *curve_data)
318{
319 struct p54_common *priv = dev->priv;
320 struct p54_pa_curve_data_sample *dst;
321 struct pda_pa_curve_data_sample_rev0 *src;
322 size_t cd_len = sizeof(*curve_data) +
323 (curve_data->points_per_channel*sizeof(*dst) + 2) *
324 curve_data->channels;
325 unsigned int i, j;
326 void *source, *target;
327
328 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
329 GFP_KERNEL);
330 if (!priv->curve_data)
331 return -ENOMEM;
332
333 priv->curve_data->entries = curve_data->channels;
334 priv->curve_data->entry_size = sizeof(__le16) +
335 sizeof(*dst) * curve_data->points_per_channel;
336 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
337 priv->curve_data->len = cd_len;
338 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
339 source = curve_data->data;
340 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
341 for (i = 0; i < curve_data->channels; i++) {
342 __le16 *freq = source;
343 source += sizeof(__le16);
344 *((__le16 *)target) = *freq;
345 target += sizeof(__le16);
346 for (j = 0; j < curve_data->points_per_channel; j++) {
347 dst = target;
348 src = source;
349
350 dst->rf_power = src->rf_power;
351 dst->pa_detector = src->pa_detector;
352 dst->data_64qam = src->pcv;
353 /* "invent" the points for the other modulations */
354#define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
355 dst->data_16qam = SUB(src->pcv, 12);
356 dst->data_qpsk = SUB(dst->data_16qam, 12);
357 dst->data_bpsk = SUB(dst->data_qpsk, 12);
358 dst->data_barker = SUB(dst->data_bpsk, 14);
359#undef SUB
360 target += sizeof(*dst);
361 source += sizeof(*src);
362 }
363 }
364
365 return 0;
366}
367
368static int p54_convert_rev1(struct ieee80211_hw *dev,
369 struct pda_pa_curve_data *curve_data)
370{
371 struct p54_common *priv = dev->priv;
372 struct p54_pa_curve_data_sample *dst;
373 struct pda_pa_curve_data_sample_rev1 *src;
374 size_t cd_len = sizeof(*curve_data) +
375 (curve_data->points_per_channel*sizeof(*dst) + 2) *
376 curve_data->channels;
377 unsigned int i, j;
378 void *source, *target;
379
380 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
381 GFP_KERNEL);
382 if (!priv->curve_data)
383 return -ENOMEM;
384
385 priv->curve_data->entries = curve_data->channels;
386 priv->curve_data->entry_size = sizeof(__le16) +
387 sizeof(*dst) * curve_data->points_per_channel;
388 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
389 priv->curve_data->len = cd_len;
390 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
391 source = curve_data->data;
392 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
393 for (i = 0; i < curve_data->channels; i++) {
394 __le16 *freq = source;
395 source += sizeof(__le16);
396 *((__le16 *)target) = *freq;
397 target += sizeof(__le16);
398 for (j = 0; j < curve_data->points_per_channel; j++) {
399 memcpy(target, source, sizeof(*src));
400
401 target += sizeof(*dst);
402 source += sizeof(*src);
403 }
404 source++;
405 }
406
407 return 0;
408}
409
410static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
411 "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
412
413static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
414 u16 type)
415{
416 struct p54_common *priv = dev->priv;
417 int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
418 int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
419 int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
420 int i;
421
422 if (len != (entry_size * num_entries)) {
c96c31e4
JP		 423 wiphy_err(dev->wiphy,
424 "unknown rssi calibration data packing type:(%x) len:%d.\n",
425 type, len);
4c8a32f5
CL		 426
427 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
428 data, len);
429
c96c31e4 430 wiphy_err(dev->wiphy, "please report this issue.\n");
4c8a32f5
CL		 431 return;
432 }
433
434 for (i = 0; i < num_entries; i++) {
435 struct pda_rssi_cal_entry *cal = data +
436 (offset + i * entry_size);
437 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
438 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
439 }
440}
441
442static void p54_parse_default_country(struct ieee80211_hw *dev,
443 void *data, int len)
444{
445 struct pda_country *country;
446
447 if (len != sizeof(*country)) {
c96c31e4
JP		 448 wiphy_err(dev->wiphy,
449 "found possible invalid default country eeprom entry. (entry size: %d)\n",
450 len);
4c8a32f5
CL		 451
452 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
453 data, len);
454
c96c31e4 455 wiphy_err(dev->wiphy, "please report this issue.\n");
4c8a32f5
CL		 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
471static 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) {
c96c31e4
JP		 480 wiphy_err(dev->wiphy, "unknown output power db revision:%x\n",
481 data[0]);
4c8a32f5
CL		 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
509static 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
536int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
537{
538 struct p54_common *priv = dev->priv;
e6a3f551 539 struct eeprom_pda_wrap *wrap;
4c8a32f5
CL		 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;
d7eb50c0 546 u16 crc16 = ~0;
4c8a32f5
CL		 547
548 wrap = (struct eeprom_pda_wrap *) eeprom;
549 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
550
551 /* verify that at least the entry length/code fits */
552 while ((u8 *)entry <= end - sizeof(*entry)) {
553 entry_len = le16_to_cpu(entry->len);
554 data_len = ((entry_len - 1) << 1);
555
556 /* abort if entry exceeds whole structure */
557 if ((u8 *)entry + sizeof(*entry) + data_len > end)
558 break;
559
560 switch (le16_to_cpu(entry->code)) {
561 case PDR_MAC_ADDRESS:
562 if (data_len != ETH_ALEN)
563 break;
564 SET_IEEE80211_PERM_ADDR(dev, entry->data);
565 break;
566 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
567 if (priv->output_limit)
568 break;
569 err = p54_convert_output_limits(dev, entry->data,
570 data_len);
571 if (err)
572 goto err;
573 break;
574 case PDR_PRISM_PA_CAL_CURVE_DATA: {
575 struct pda_pa_curve_data *curve_data =
576 (struct pda_pa_curve_data *)entry->data;
577 if (data_len < sizeof(*curve_data)) {
578 err = -EINVAL;
579 goto err;
580 }
581
582 switch (curve_data->cal_method_rev) {
583 case 0:
584 err = p54_convert_rev0(dev, curve_data);
585 break;
586 case 1:
587 err = p54_convert_rev1(dev, curve_data);
588 break;
589 default:
c96c31e4
JP		 590 wiphy_err(dev->wiphy,
591 "unknown curve data revision %d\n",
592 curve_data->cal_method_rev);
4c8a32f5
CL		 593 err = -ENODEV;
594 break;
595 }
596 if (err)
597 goto err;
598 }
599 break;
600 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
27b81bbe
JL		 601 priv->iq_autocal = kmemdup(entry->data, data_len,
602 GFP_KERNEL);
4c8a32f5
CL		 603 if (!priv->iq_autocal) {
604 err = -ENOMEM;
605 goto err;
606 }
607
4c8a32f5
CL		 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:
d7eb50c0
CL		 662 crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry));
663 if (crc16 != le16_to_cpup((__le16 *)entry->data)) {
664 wiphy_err(dev->wiphy, "eeprom failed checksum "
665 "test!\n");
666 err = -ENOMSG;
667 goto err;
668 } else {
669 goto good_eeprom;
670 }
4c8a32f5
CL		 671 break;
672 default:
673 break;
674 }
675
d7eb50c0
CL		 676 crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2);
677 entry = (void *)entry + (entry_len + 1) * 2;
4c8a32f5
CL		 678 }
679
d7eb50c0
CL		 680 wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n");
681 err = -ENODATA;
682 goto err;
683
684good_eeprom:
4c8a32f5
CL		 685 if (!synth || !priv->iq_autocal || !priv->output_limit ||
686 !priv->curve_data) {
c96c31e4
JP		 687 wiphy_err(dev->wiphy,
688 "not all required entries found in eeprom!\n");
4c8a32f5
CL		 689 err = -EINVAL;
690 goto err;
691 }
692
1a9b6679
CL		 693 err = p54_generate_channel_lists(dev);
694 if (err)
695 goto err;
696
4c8a32f5
CL		 697 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
698 if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
699 p54_init_xbow_synth(priv);
700 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
1a9b6679
CL		 701 dev->wiphy->bands[IEEE80211_BAND_2GHZ] =
702 priv->band_table[IEEE80211_BAND_2GHZ];
4c8a32f5 703 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
1a9b6679
CL		 704 dev->wiphy->bands[IEEE80211_BAND_5GHZ] =
705 priv->band_table[IEEE80211_BAND_5GHZ];
4c8a32f5
CL		 706 if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
707 priv->rx_diversity_mask = 3;
708 if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
709 priv->tx_diversity_mask = 3;
710
711 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
712 u8 perm_addr[ETH_ALEN];
713
c96c31e4 714 wiphy_warn(dev->wiphy,
5db55844 715 "Invalid hwaddr! Using randomly generated MAC addr\n");
4c8a32f5
CL		 716 random_ether_addr(perm_addr);
717 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
718 }
719
5db55844 720 wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n",
c96c31e4
JP		 721 dev->wiphy->perm_addr, priv->version,
722 p54_rf_chips[priv->rxhw]);
4c8a32f5
CL		 723
724 return 0;
725
726err:
727 kfree(priv->iq_autocal);
728 kfree(priv->output_limit);
729 kfree(priv->curve_data);
730 priv->iq_autocal = NULL;
731 priv->output_limit = NULL;
732 priv->curve_data = NULL;
733
c96c31e4 734 wiphy_err(dev->wiphy, "eeprom parse failed!\n");
4c8a32f5
CL		 735 return err;
736}
737EXPORT_SYMBOL_GPL(p54_parse_eeprom);
738
739int p54_read_eeprom(struct ieee80211_hw *dev)
740{
741 struct p54_common *priv = dev->priv;
742 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
743 int ret = -ENOMEM;
e6a3f551 744 void *eeprom;
4c8a32f5
CL		 745
746 maxblocksize = EEPROM_READBACK_LEN;
747 if (priv->fw_var >= 0x509)
748 maxblocksize -= 0xc;
749 else
750 maxblocksize -= 0x4;
751
752 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
753 if (unlikely(!eeprom))
754 goto free;
755
756 while (eeprom_size) {
757 blocksize = min(eeprom_size, maxblocksize);
758 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
759 offset, blocksize);
760 if (unlikely(ret))
761 goto free;
762
763 offset += blocksize;
764 eeprom_size -= blocksize;
765 }
766
767 ret = p54_parse_eeprom(dev, eeprom, offset);
768free:
769 kfree(eeprom);
770 return ret;
771}
772EXPORT_SYMBOL_GPL(p54_read_eeprom);
Linux 6.x block layer and io_uring tree(s)