1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * EEPROM parser code for mac80211 Prism54 drivers |
4 | * |
5 | * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> |
6 | * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de> |
7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
8 | * |
9 | * Based on: |
10 | * - the islsm (softmac prism54) driver, which is: |
11 | * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al. |
12 | * - stlc45xx driver |
13 | * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). |
14 | */ |
15 | |
16 | #include <linux/firmware.h> |
17 | #include <linux/etherdevice.h> |
18 | #include <linux/sort.h> |
19 | #include <linux/slab.h> |
20 | |
21 | #include <net/mac80211.h> |
22 | #include <linux/crc-ccitt.h> |
23 | #include <linux/export.h> |
24 | |
25 | #include "p54.h" |
26 | #include "eeprom.h" |
27 | #include "lmac.h" |
28 | |
29 | static struct ieee80211_rate p54_bgrates[] = { |
30 | { .bitrate = 10, .hw_value = 0, }, |
31 | { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
32 | { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
33 | { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
34 | { .bitrate = 60, .hw_value = 4, }, |
35 | { .bitrate = 90, .hw_value = 5, }, |
36 | { .bitrate = 120, .hw_value = 6, }, |
37 | { .bitrate = 180, .hw_value = 7, }, |
38 | { .bitrate = 240, .hw_value = 8, }, |
39 | { .bitrate = 360, .hw_value = 9, }, |
40 | { .bitrate = 480, .hw_value = 10, }, |
41 | { .bitrate = 540, .hw_value = 11, }, |
42 | }; |
43 | |
44 | static struct ieee80211_rate p54_arates[] = { |
45 | { .bitrate = 60, .hw_value = 4, }, |
46 | { .bitrate = 90, .hw_value = 5, }, |
47 | { .bitrate = 120, .hw_value = 6, }, |
48 | { .bitrate = 180, .hw_value = 7, }, |
49 | { .bitrate = 240, .hw_value = 8, }, |
50 | { .bitrate = 360, .hw_value = 9, }, |
51 | { .bitrate = 480, .hw_value = 10, }, |
52 | { .bitrate = 540, .hw_value = 11, }, |
53 | }; |
54 | |
55 | static struct p54_rssi_db_entry = { |
56 | /* |
57 | * The defaults are taken from usb-logs of the |
58 | * vendor driver. So, they should be safe to |
59 | * use in case we can't get a match from the |
60 | * rssi <-> dBm conversion database. |
61 | */ |
62 | .mul = 130, |
63 | .add = -398, |
64 | }; |
65 | |
66 | #define CHAN_HAS_CAL BIT(0) |
67 | #define CHAN_HAS_LIMIT BIT(1) |
68 | #define CHAN_HAS_CURVE BIT(2) |
69 | #define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE) |
70 | |
71 | struct p54_channel_entry { |
72 | u16 freq; |
73 | u16 data; |
74 | int index; |
75 | int max_power; |
76 | enum nl80211_band band; |
77 | }; |
78 | |
79 | struct p54_channel_list { |
80 | struct p54_channel_entry *channels; |
81 | size_t entries; |
82 | size_t max_entries; |
83 | size_t band_channel_num[NUM_NL80211_BANDS]; |
84 | }; |
85 | |
86 | static int p54_get_band_from_freq(u16 freq) |
87 | { |
88 | /* FIXME: sync these values with the 802.11 spec */ |
89 | |
90 | if ((freq >= 2412) && (freq <= 2484)) |
91 | return NL80211_BAND_2GHZ; |
92 | |
93 | if ((freq >= 4920) && (freq <= 5825)) |
94 | return NL80211_BAND_5GHZ; |
95 | |
96 | return -1; |
97 | } |
98 | |
99 | static int same_band(u16 freq, u16 freq2) |
100 | { |
101 | return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq: freq2); |
102 | } |
103 | |
104 | static int p54_compare_channels(const void *_a, |
105 | const void *_b) |
106 | { |
107 | const struct p54_channel_entry *a = _a; |
108 | const struct p54_channel_entry *b = _b; |
109 | |
110 | return a->freq - b->freq; |
111 | } |
112 | |
113 | static int (const void *_a, |
114 | const void *_b) |
115 | { |
116 | const struct p54_rssi_db_entry *a = _a; |
117 | const struct p54_rssi_db_entry *b = _b; |
118 | |
119 | return a->freq - b->freq; |
120 | } |
121 | |
122 | static int p54_fill_band_bitrates(struct ieee80211_hw *dev, |
123 | struct ieee80211_supported_band *band_entry, |
124 | enum nl80211_band band) |
125 | { |
126 | /* TODO: generate rate array dynamically */ |
127 | |
128 | switch (band) { |
129 | case NL80211_BAND_2GHZ: |
130 | band_entry->bitrates = p54_bgrates; |
131 | band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); |
132 | break; |
133 | case NL80211_BAND_5GHZ: |
134 | band_entry->bitrates = p54_arates; |
135 | band_entry->n_bitrates = ARRAY_SIZE(p54_arates); |
136 | break; |
137 | default: |
138 | return -EINVAL; |
139 | } |
140 | |
141 | return 0; |
142 | } |
143 | |
144 | static int p54_generate_band(struct ieee80211_hw *dev, |
145 | struct p54_channel_list *list, |
146 | unsigned int *chan_num, |
147 | enum nl80211_band band) |
148 | { |
149 | struct p54_common *priv = dev->priv; |
150 | struct ieee80211_supported_band *tmp, *old; |
151 | unsigned int i, j; |
152 | int ret = -ENOMEM; |
153 | |
154 | if ((!list->entries) || (!list->band_channel_num[band])) |
155 | return -EINVAL; |
156 | |
157 | tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL); |
158 | if (!tmp) |
159 | goto err_out; |
160 | |
161 | tmp->channels = kcalloc(n: list->band_channel_num[band], |
162 | size: sizeof(struct ieee80211_channel), |
163 | GFP_KERNEL); |
164 | if (!tmp->channels) |
165 | goto err_out; |
166 | |
167 | ret = p54_fill_band_bitrates(dev, band_entry: tmp, band); |
168 | if (ret) |
169 | goto err_out; |
170 | |
171 | for (i = 0, j = 0; (j < list->band_channel_num[band]) && |
172 | (i < list->entries); i++) { |
173 | struct p54_channel_entry *chan = &list->channels[i]; |
174 | struct ieee80211_channel *dest = &tmp->channels[j]; |
175 | |
176 | if (chan->band != band) |
177 | continue; |
178 | |
179 | if (chan->data != CHAN_HAS_ALL) { |
180 | wiphy_err(dev->wiphy, "%s%s%s is/are missing for " |
181 | "channel:%d [%d MHz].\n" , |
182 | (chan->data & CHAN_HAS_CAL ? "" : |
183 | " [iqauto calibration data]" ), |
184 | (chan->data & CHAN_HAS_LIMIT ? "" : |
185 | " [output power limits]" ), |
186 | (chan->data & CHAN_HAS_CURVE ? "" : |
187 | " [curve data]" ), |
188 | chan->index, chan->freq); |
189 | continue; |
190 | } |
191 | |
192 | dest->band = chan->band; |
193 | dest->center_freq = chan->freq; |
194 | dest->max_power = chan->max_power; |
195 | priv->survey[*chan_num].channel = &tmp->channels[j]; |
196 | priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM | |
197 | SURVEY_INFO_TIME | |
198 | SURVEY_INFO_TIME_BUSY | |
199 | SURVEY_INFO_TIME_TX; |
200 | dest->hw_value = (*chan_num); |
201 | j++; |
202 | (*chan_num)++; |
203 | } |
204 | |
205 | if (j == 0) { |
206 | wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n" , |
207 | (band == NL80211_BAND_2GHZ) ? 2 : 5); |
208 | |
209 | ret = -ENODATA; |
210 | goto err_out; |
211 | } |
212 | |
213 | tmp->n_channels = j; |
214 | old = priv->band_table[band]; |
215 | priv->band_table[band] = tmp; |
216 | if (old) { |
217 | kfree(objp: old->channels); |
218 | kfree(objp: old); |
219 | } |
220 | |
221 | return 0; |
222 | |
223 | err_out: |
224 | if (tmp) { |
225 | kfree(objp: tmp->channels); |
226 | kfree(objp: tmp); |
227 | } |
228 | |
229 | return ret; |
230 | } |
231 | |
232 | static struct p54_channel_entry *p54_update_channel_param(struct p54_channel_list *list, |
233 | u16 freq, u16 data) |
234 | { |
235 | int i; |
236 | struct p54_channel_entry *entry = NULL; |
237 | |
238 | /* |
239 | * usually all lists in the eeprom are mostly sorted. |
240 | * so it's very likely that the entry we are looking for |
241 | * is right at the end of the list |
242 | */ |
243 | for (i = list->entries; i >= 0; i--) { |
244 | if (freq == list->channels[i].freq) { |
245 | entry = &list->channels[i]; |
246 | break; |
247 | } |
248 | } |
249 | |
250 | if ((i < 0) && (list->entries < list->max_entries)) { |
251 | /* entry does not exist yet. Initialize a new one. */ |
252 | int band = p54_get_band_from_freq(freq); |
253 | |
254 | /* |
255 | * filter out frequencies which don't belong into |
256 | * any supported band. |
257 | */ |
258 | if (band >= 0) { |
259 | i = list->entries++; |
260 | list->band_channel_num[band]++; |
261 | |
262 | entry = &list->channels[i]; |
263 | entry->freq = freq; |
264 | entry->band = band; |
265 | entry->index = ieee80211_frequency_to_channel(freq); |
266 | entry->max_power = 0; |
267 | entry->data = 0; |
268 | } |
269 | } |
270 | |
271 | if (entry) |
272 | entry->data |= data; |
273 | |
274 | return entry; |
275 | } |
276 | |
277 | static int p54_get_maxpower(struct p54_common *priv, void *data) |
278 | { |
279 | switch (priv->rxhw & PDR_SYNTH_FRONTEND_MASK) { |
280 | case PDR_SYNTH_FRONTEND_LONGBOW: { |
281 | struct pda_channel_output_limit_longbow *pda = data; |
282 | int j; |
283 | u16 rawpower = 0; |
284 | pda = data; |
285 | for (j = 0; j < ARRAY_SIZE(pda->point); j++) { |
286 | struct pda_channel_output_limit_point_longbow *point = |
287 | &pda->point[j]; |
288 | rawpower = max_t(u16, |
289 | rawpower, le16_to_cpu(point->val_qpsk)); |
290 | rawpower = max_t(u16, |
291 | rawpower, le16_to_cpu(point->val_bpsk)); |
292 | rawpower = max_t(u16, |
293 | rawpower, le16_to_cpu(point->val_16qam)); |
294 | rawpower = max_t(u16, |
295 | rawpower, le16_to_cpu(point->val_64qam)); |
296 | } |
297 | /* longbow seems to use 1/16 dBm units */ |
298 | return rawpower / 16; |
299 | } |
300 | |
301 | case PDR_SYNTH_FRONTEND_DUETTE3: |
302 | case PDR_SYNTH_FRONTEND_DUETTE2: |
303 | case PDR_SYNTH_FRONTEND_FRISBEE: |
304 | case PDR_SYNTH_FRONTEND_XBOW: { |
305 | struct pda_channel_output_limit *pda = data; |
306 | u8 rawpower = 0; |
307 | rawpower = max(rawpower, pda->val_qpsk); |
308 | rawpower = max(rawpower, pda->val_bpsk); |
309 | rawpower = max(rawpower, pda->val_16qam); |
310 | rawpower = max(rawpower, pda->val_64qam); |
311 | /* raw values are in 1/4 dBm units */ |
312 | return rawpower / 4; |
313 | } |
314 | |
315 | default: |
316 | return 20; |
317 | } |
318 | } |
319 | |
320 | static int p54_generate_channel_lists(struct ieee80211_hw *dev) |
321 | { |
322 | struct p54_common *priv = dev->priv; |
323 | struct p54_channel_list *list; |
324 | unsigned int i, j, k, max_channel_num; |
325 | int ret = 0; |
326 | u16 freq; |
327 | |
328 | if ((priv->iq_autocal_len != priv->curve_data->entries) || |
329 | (priv->iq_autocal_len != priv->output_limit->entries)) |
330 | wiphy_err(dev->wiphy, |
331 | "Unsupported or damaged EEPROM detected. " |
332 | "You may not be able to use all channels.\n" ); |
333 | |
334 | max_channel_num = max_t(unsigned int, priv->output_limit->entries, |
335 | priv->iq_autocal_len); |
336 | max_channel_num = max_t(unsigned int, max_channel_num, |
337 | priv->curve_data->entries); |
338 | |
339 | list = kzalloc(size: sizeof(*list), GFP_KERNEL); |
340 | if (!list) { |
341 | ret = -ENOMEM; |
342 | goto free; |
343 | } |
344 | priv->chan_num = max_channel_num; |
345 | priv->survey = kcalloc(n: max_channel_num, size: sizeof(struct survey_info), |
346 | GFP_KERNEL); |
347 | if (!priv->survey) { |
348 | ret = -ENOMEM; |
349 | goto free; |
350 | } |
351 | |
352 | list->max_entries = max_channel_num; |
353 | list->channels = kcalloc(n: max_channel_num, |
354 | size: sizeof(struct p54_channel_entry), |
355 | GFP_KERNEL); |
356 | if (!list->channels) { |
357 | ret = -ENOMEM; |
358 | goto free; |
359 | } |
360 | |
361 | for (i = 0; i < max_channel_num; i++) { |
362 | if (i < priv->iq_autocal_len) { |
363 | freq = le16_to_cpu(priv->iq_autocal[i].freq); |
364 | p54_update_channel_param(list, freq, CHAN_HAS_CAL); |
365 | } |
366 | |
367 | if (i < priv->output_limit->entries) { |
368 | struct p54_channel_entry *tmp; |
369 | |
370 | void *data = (void *) ((unsigned long) i * |
371 | priv->output_limit->entry_size + |
372 | priv->output_limit->offset + |
373 | priv->output_limit->data); |
374 | |
375 | freq = le16_to_cpup(p: (__le16 *) data); |
376 | tmp = p54_update_channel_param(list, freq, |
377 | CHAN_HAS_LIMIT); |
378 | if (tmp) { |
379 | tmp->max_power = p54_get_maxpower(priv, data); |
380 | } |
381 | } |
382 | |
383 | if (i < priv->curve_data->entries) { |
384 | freq = le16_to_cpup(p: (__le16 *) (i * |
385 | priv->curve_data->entry_size + |
386 | priv->curve_data->offset + |
387 | priv->curve_data->data)); |
388 | |
389 | p54_update_channel_param(list, freq, CHAN_HAS_CURVE); |
390 | } |
391 | } |
392 | |
393 | /* sort the channel list by frequency */ |
394 | sort(base: list->channels, num: list->entries, size: sizeof(struct p54_channel_entry), |
395 | cmp_func: p54_compare_channels, NULL); |
396 | |
397 | k = 0; |
398 | for (i = 0, j = 0; i < NUM_NL80211_BANDS; i++) { |
399 | if (p54_generate_band(dev, list, chan_num: &k, band: i) == 0) |
400 | j++; |
401 | } |
402 | if (j == 0) { |
403 | /* no useable band available. */ |
404 | ret = -EINVAL; |
405 | } |
406 | |
407 | free: |
408 | if (list) { |
409 | kfree(objp: list->channels); |
410 | kfree(objp: list); |
411 | } |
412 | if (ret) { |
413 | kfree(objp: priv->survey); |
414 | priv->survey = NULL; |
415 | } |
416 | |
417 | return ret; |
418 | } |
419 | |
420 | static int p54_convert_rev0(struct ieee80211_hw *dev, |
421 | struct pda_pa_curve_data *curve_data) |
422 | { |
423 | struct p54_common *priv = dev->priv; |
424 | struct p54_pa_curve_data_sample *dst; |
425 | struct pda_pa_curve_data_sample_rev0 *src; |
426 | size_t cd_len = sizeof(*curve_data) + |
427 | (curve_data->points_per_channel*sizeof(*dst) + 2) * |
428 | curve_data->channels; |
429 | unsigned int i, j; |
430 | void *source, *target; |
431 | |
432 | priv->curve_data = kmalloc(size: sizeof(*priv->curve_data) + cd_len, |
433 | GFP_KERNEL); |
434 | if (!priv->curve_data) |
435 | return -ENOMEM; |
436 | |
437 | priv->curve_data->entries = curve_data->channels; |
438 | priv->curve_data->entry_size = sizeof(__le16) + |
439 | sizeof(*dst) * curve_data->points_per_channel; |
440 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); |
441 | priv->curve_data->len = cd_len; |
442 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); |
443 | source = curve_data->data; |
444 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; |
445 | for (i = 0; i < curve_data->channels; i++) { |
446 | __le16 *freq = source; |
447 | source += sizeof(__le16); |
448 | *((__le16 *)target) = *freq; |
449 | target += sizeof(__le16); |
450 | for (j = 0; j < curve_data->points_per_channel; j++) { |
451 | dst = target; |
452 | src = source; |
453 | |
454 | dst->rf_power = src->rf_power; |
455 | dst->pa_detector = src->pa_detector; |
456 | dst->data_64qam = src->pcv; |
457 | /* "invent" the points for the other modulations */ |
458 | #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y)) |
459 | dst->data_16qam = SUB(src->pcv, 12); |
460 | dst->data_qpsk = SUB(dst->data_16qam, 12); |
461 | dst->data_bpsk = SUB(dst->data_qpsk, 12); |
462 | dst->data_barker = SUB(dst->data_bpsk, 14); |
463 | #undef SUB |
464 | target += sizeof(*dst); |
465 | source += sizeof(*src); |
466 | } |
467 | } |
468 | |
469 | return 0; |
470 | } |
471 | |
472 | static int p54_convert_rev1(struct ieee80211_hw *dev, |
473 | struct pda_pa_curve_data *curve_data) |
474 | { |
475 | struct p54_common *priv = dev->priv; |
476 | struct p54_pa_curve_data_sample *dst; |
477 | struct pda_pa_curve_data_sample_rev1 *src; |
478 | size_t cd_len = sizeof(*curve_data) + |
479 | (curve_data->points_per_channel*sizeof(*dst) + 2) * |
480 | curve_data->channels; |
481 | unsigned int i, j; |
482 | void *source, *target; |
483 | |
484 | priv->curve_data = kzalloc(size: cd_len + sizeof(*priv->curve_data), |
485 | GFP_KERNEL); |
486 | if (!priv->curve_data) |
487 | return -ENOMEM; |
488 | |
489 | priv->curve_data->entries = curve_data->channels; |
490 | priv->curve_data->entry_size = sizeof(__le16) + |
491 | sizeof(*dst) * curve_data->points_per_channel; |
492 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); |
493 | priv->curve_data->len = cd_len; |
494 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); |
495 | source = curve_data->data; |
496 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; |
497 | for (i = 0; i < curve_data->channels; i++) { |
498 | __le16 *freq = source; |
499 | source += sizeof(__le16); |
500 | *((__le16 *)target) = *freq; |
501 | target += sizeof(__le16); |
502 | for (j = 0; j < curve_data->points_per_channel; j++) { |
503 | memcpy(target, source, sizeof(*src)); |
504 | |
505 | target += sizeof(*dst); |
506 | source += sizeof(*src); |
507 | } |
508 | source++; |
509 | } |
510 | |
511 | return 0; |
512 | } |
513 | |
514 | static const char *p54_rf_chips[] = { "INVALID-0" , "Duette3" , "Duette2" , |
515 | "Frisbee" , "Xbow" , "Longbow" , "INVALID-6" , "INVALID-7" }; |
516 | |
517 | static int (struct ieee80211_hw *dev, |
518 | u8 *data, int len, u16 type) |
519 | { |
520 | struct p54_common *priv = dev->priv; |
521 | struct p54_rssi_db_entry *entry; |
522 | size_t db_len, entries; |
523 | int offset = 0, i; |
524 | |
525 | if (type != PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { |
526 | entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2; |
527 | if (len != sizeof(struct pda_rssi_cal_entry) * entries) { |
528 | wiphy_err(dev->wiphy, "rssical size mismatch.\n" ); |
529 | goto err_data; |
530 | } |
531 | } else { |
532 | /* |
533 | * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...) |
534 | * have an empty two byte header. |
535 | */ |
536 | if (*((__le16 *)&data[offset]) == cpu_to_le16(0)) |
537 | offset += 2; |
538 | |
539 | entries = (len - offset) / |
540 | sizeof(struct pda_rssi_cal_ext_entry); |
541 | |
542 | if (len < offset || |
543 | (len - offset) % sizeof(struct pda_rssi_cal_ext_entry) || |
544 | entries == 0) { |
545 | wiphy_err(dev->wiphy, "invalid rssi database.\n" ); |
546 | goto err_data; |
547 | } |
548 | } |
549 | |
550 | db_len = sizeof(*entry) * entries; |
551 | priv->rssi_db = kzalloc(size: db_len + sizeof(*priv->rssi_db), GFP_KERNEL); |
552 | if (!priv->rssi_db) |
553 | return -ENOMEM; |
554 | |
555 | priv->rssi_db->offset = 0; |
556 | priv->rssi_db->entries = entries; |
557 | priv->rssi_db->entry_size = sizeof(*entry); |
558 | priv->rssi_db->len = db_len; |
559 | |
560 | entry = (void *)((unsigned long)priv->rssi_db->data + priv->rssi_db->offset); |
561 | if (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { |
562 | struct pda_rssi_cal_ext_entry *cal = (void *) &data[offset]; |
563 | |
564 | for (i = 0; i < entries; i++) { |
565 | entry[i].freq = le16_to_cpu(cal[i].freq); |
566 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); |
567 | entry[i].add = (s16) le16_to_cpu(cal[i].add); |
568 | } |
569 | } else { |
570 | struct pda_rssi_cal_entry *cal = (void *) &data[offset]; |
571 | |
572 | for (i = 0; i < entries; i++) { |
573 | u16 freq = 0; |
574 | switch (i) { |
575 | case NL80211_BAND_2GHZ: |
576 | freq = 2437; |
577 | break; |
578 | case NL80211_BAND_5GHZ: |
579 | freq = 5240; |
580 | break; |
581 | } |
582 | |
583 | entry[i].freq = freq; |
584 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); |
585 | entry[i].add = (s16) le16_to_cpu(cal[i].add); |
586 | } |
587 | } |
588 | |
589 | /* sort the list by channel frequency */ |
590 | sort(base: entry, num: entries, size: sizeof(*entry), cmp_func: p54_compare_rssichan, NULL); |
591 | return 0; |
592 | |
593 | err_data: |
594 | wiphy_err(dev->wiphy, |
595 | "rssi calibration data packing type:(%x) len:%d.\n" , |
596 | type, len); |
597 | |
598 | print_hex_dump_bytes("rssical:" , DUMP_PREFIX_NONE, data, len); |
599 | |
600 | wiphy_err(dev->wiphy, "please report this issue.\n" ); |
601 | return -EINVAL; |
602 | } |
603 | |
604 | struct p54_rssi_db_entry *(struct p54_common *priv, const u16 freq) |
605 | { |
606 | struct p54_rssi_db_entry *entry; |
607 | int i, found = -1; |
608 | |
609 | if (!priv->rssi_db) |
610 | return &p54_rssi_default; |
611 | |
612 | entry = (void *)(priv->rssi_db->data + priv->rssi_db->offset); |
613 | for (i = 0; i < priv->rssi_db->entries; i++) { |
614 | if (!same_band(freq, freq2: entry[i].freq)) |
615 | continue; |
616 | |
617 | if (found == -1) { |
618 | found = i; |
619 | continue; |
620 | } |
621 | |
622 | /* nearest match */ |
623 | if (abs(freq - entry[i].freq) < |
624 | abs(freq - entry[found].freq)) { |
625 | found = i; |
626 | continue; |
627 | } else { |
628 | break; |
629 | } |
630 | } |
631 | |
632 | return found < 0 ? &p54_rssi_default : &entry[found]; |
633 | } |
634 | |
635 | static void p54_parse_default_country(struct ieee80211_hw *dev, |
636 | void *data, int len) |
637 | { |
638 | struct pda_country *country; |
639 | |
640 | if (len != sizeof(*country)) { |
641 | wiphy_err(dev->wiphy, |
642 | "found possible invalid default country eeprom entry. (entry size: %d)\n" , |
643 | len); |
644 | |
645 | print_hex_dump_bytes("country:" , DUMP_PREFIX_NONE, |
646 | data, len); |
647 | |
648 | wiphy_err(dev->wiphy, "please report this issue.\n" ); |
649 | return; |
650 | } |
651 | |
652 | country = (struct pda_country *) data; |
653 | if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO) |
654 | regulatory_hint(wiphy: dev->wiphy, alpha2: country->alpha2); |
655 | else { |
656 | /* TODO: |
657 | * write a shared/common function that converts |
658 | * "Regulatory domain codes" (802.11-2007 14.8.2.2) |
659 | * into ISO/IEC 3166-1 alpha2 for regulatory_hint. |
660 | */ |
661 | } |
662 | } |
663 | |
664 | static int p54_convert_output_limits(struct ieee80211_hw *dev, |
665 | u8 *data, size_t len) |
666 | { |
667 | struct p54_common *priv = dev->priv; |
668 | |
669 | if (len < 2) |
670 | return -EINVAL; |
671 | |
672 | if (data[0] != 0) { |
673 | wiphy_err(dev->wiphy, "unknown output power db revision:%x\n" , |
674 | data[0]); |
675 | return -EINVAL; |
676 | } |
677 | |
678 | if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len) |
679 | return -EINVAL; |
680 | |
681 | priv->output_limit = kmalloc(size: data[1] * |
682 | sizeof(struct pda_channel_output_limit) + |
683 | sizeof(*priv->output_limit), GFP_KERNEL); |
684 | |
685 | if (!priv->output_limit) |
686 | return -ENOMEM; |
687 | |
688 | priv->output_limit->offset = 0; |
689 | priv->output_limit->entries = data[1]; |
690 | priv->output_limit->entry_size = |
691 | sizeof(struct pda_channel_output_limit); |
692 | priv->output_limit->len = priv->output_limit->entry_size * |
693 | priv->output_limit->entries + |
694 | priv->output_limit->offset; |
695 | |
696 | memcpy(priv->output_limit->data, &data[2], |
697 | data[1] * sizeof(struct pda_channel_output_limit)); |
698 | |
699 | return 0; |
700 | } |
701 | |
702 | static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src, |
703 | size_t total_len) |
704 | { |
705 | struct p54_cal_database *dst; |
706 | size_t payload_len, entries, entry_size, offset; |
707 | |
708 | payload_len = le16_to_cpu(src->len); |
709 | entries = le16_to_cpu(src->entries); |
710 | entry_size = le16_to_cpu(src->entry_size); |
711 | offset = le16_to_cpu(src->offset); |
712 | if (((entries * entry_size + offset) != payload_len) || |
713 | (payload_len + sizeof(*src) != total_len)) |
714 | return NULL; |
715 | |
716 | dst = kmalloc(size: sizeof(*dst) + payload_len, GFP_KERNEL); |
717 | if (!dst) |
718 | return NULL; |
719 | |
720 | dst->entries = entries; |
721 | dst->entry_size = entry_size; |
722 | dst->offset = offset; |
723 | dst->len = payload_len; |
724 | |
725 | memcpy(dst->data, src->data, payload_len); |
726 | return dst; |
727 | } |
728 | |
729 | int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) |
730 | { |
731 | struct p54_common *priv = dev->priv; |
732 | struct eeprom_pda_wrap *wrap; |
733 | struct pda_entry *entry; |
734 | unsigned int data_len, entry_len; |
735 | void *tmp; |
736 | int err; |
737 | u8 *end = (u8 *)eeprom + len; |
738 | u16 synth = 0; |
739 | u16 crc16 = ~0; |
740 | |
741 | wrap = (struct eeprom_pda_wrap *) eeprom; |
742 | entry = (void *)wrap->data + le16_to_cpu(wrap->len); |
743 | |
744 | /* verify that at least the entry length/code fits */ |
745 | while ((u8 *)entry <= end - sizeof(*entry)) { |
746 | entry_len = le16_to_cpu(entry->len); |
747 | data_len = ((entry_len - 1) << 1); |
748 | |
749 | /* abort if entry exceeds whole structure */ |
750 | if ((u8 *)entry + sizeof(*entry) + data_len > end) |
751 | break; |
752 | |
753 | switch (le16_to_cpu(entry->code)) { |
754 | case PDR_MAC_ADDRESS: |
755 | if (data_len != ETH_ALEN) |
756 | break; |
757 | SET_IEEE80211_PERM_ADDR(hw: dev, addr: entry->data); |
758 | break; |
759 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS: |
760 | if (priv->output_limit) |
761 | break; |
762 | err = p54_convert_output_limits(dev, data: entry->data, |
763 | len: data_len); |
764 | if (err) |
765 | goto err; |
766 | break; |
767 | case PDR_PRISM_PA_CAL_CURVE_DATA: { |
768 | struct pda_pa_curve_data *curve_data = |
769 | (struct pda_pa_curve_data *)entry->data; |
770 | if (data_len < sizeof(*curve_data)) { |
771 | err = -EINVAL; |
772 | goto err; |
773 | } |
774 | |
775 | switch (curve_data->cal_method_rev) { |
776 | case 0: |
777 | err = p54_convert_rev0(dev, curve_data); |
778 | break; |
779 | case 1: |
780 | err = p54_convert_rev1(dev, curve_data); |
781 | break; |
782 | default: |
783 | wiphy_err(dev->wiphy, |
784 | "unknown curve data revision %d\n" , |
785 | curve_data->cal_method_rev); |
786 | err = -ENODEV; |
787 | break; |
788 | } |
789 | if (err) |
790 | goto err; |
791 | } |
792 | break; |
793 | case PDR_PRISM_ZIF_TX_IQ_CALIBRATION: |
794 | priv->iq_autocal = kmemdup(p: entry->data, size: data_len, |
795 | GFP_KERNEL); |
796 | if (!priv->iq_autocal) { |
797 | err = -ENOMEM; |
798 | goto err; |
799 | } |
800 | |
801 | priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry); |
802 | break; |
803 | case PDR_DEFAULT_COUNTRY: |
804 | p54_parse_default_country(dev, data: entry->data, len: data_len); |
805 | break; |
806 | case PDR_INTERFACE_LIST: |
807 | tmp = entry->data; |
808 | while ((u8 *)tmp < entry->data + data_len) { |
809 | struct exp_if *exp_if = tmp; |
810 | if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000)) |
811 | synth = le16_to_cpu(exp_if->variant); |
812 | tmp += sizeof(*exp_if); |
813 | } |
814 | break; |
815 | case PDR_HARDWARE_PLATFORM_COMPONENT_ID: |
816 | if (data_len < 2) |
817 | break; |
818 | priv->version = *(u8 *)(entry->data + 1); |
819 | break; |
820 | case PDR_RSSI_LINEAR_APPROXIMATION: |
821 | case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND: |
822 | case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED: |
823 | err = p54_parse_rssical(dev, data: entry->data, len: data_len, |
824 | le16_to_cpu(entry->code)); |
825 | if (err) |
826 | goto err; |
827 | break; |
828 | case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: { |
829 | struct pda_custom_wrapper *pda = (void *) entry->data; |
830 | __le16 *src; |
831 | u16 *dst; |
832 | int i; |
833 | |
834 | if (priv->rssi_db || data_len < sizeof(*pda)) |
835 | break; |
836 | |
837 | priv->rssi_db = p54_convert_db(src: pda, total_len: data_len); |
838 | if (!priv->rssi_db) |
839 | break; |
840 | |
841 | src = (void *) priv->rssi_db->data; |
842 | dst = (void *) priv->rssi_db->data; |
843 | |
844 | for (i = 0; i < priv->rssi_db->entries; i++) |
845 | *(dst++) = (s16) le16_to_cpu(*(src++)); |
846 | |
847 | } |
848 | break; |
849 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: { |
850 | struct pda_custom_wrapper *pda = (void *) entry->data; |
851 | if (priv->output_limit || data_len < sizeof(*pda)) |
852 | break; |
853 | priv->output_limit = p54_convert_db(src: pda, total_len: data_len); |
854 | } |
855 | break; |
856 | case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: { |
857 | struct pda_custom_wrapper *pda = (void *) entry->data; |
858 | if (priv->curve_data || data_len < sizeof(*pda)) |
859 | break; |
860 | priv->curve_data = p54_convert_db(src: pda, total_len: data_len); |
861 | } |
862 | break; |
863 | case PDR_END: |
864 | crc16 = ~crc_ccitt(crc: crc16, buffer: (u8 *) entry, len: sizeof(*entry)); |
865 | if (crc16 != le16_to_cpup(p: (__le16 *)entry->data)) { |
866 | wiphy_err(dev->wiphy, "eeprom failed checksum " |
867 | "test!\n" ); |
868 | err = -ENOMSG; |
869 | goto err; |
870 | } else { |
871 | goto good_eeprom; |
872 | } |
873 | break; |
874 | default: |
875 | break; |
876 | } |
877 | |
878 | crc16 = crc_ccitt(crc: crc16, buffer: (u8 *)entry, len: (entry_len + 1) * 2); |
879 | entry = (void *)entry + (entry_len + 1) * 2; |
880 | } |
881 | |
882 | wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n" ); |
883 | err = -ENODATA; |
884 | goto err; |
885 | |
886 | good_eeprom: |
887 | if (!synth || !priv->iq_autocal || !priv->output_limit || |
888 | !priv->curve_data) { |
889 | wiphy_err(dev->wiphy, |
890 | "not all required entries found in eeprom!\n" ); |
891 | err = -EINVAL; |
892 | goto err; |
893 | } |
894 | |
895 | priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; |
896 | |
897 | err = p54_generate_channel_lists(dev); |
898 | if (err) |
899 | goto err; |
900 | |
901 | if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW) |
902 | p54_init_xbow_synth(priv); |
903 | if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) |
904 | dev->wiphy->bands[NL80211_BAND_2GHZ] = |
905 | priv->band_table[NL80211_BAND_2GHZ]; |
906 | if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) |
907 | dev->wiphy->bands[NL80211_BAND_5GHZ] = |
908 | priv->band_table[NL80211_BAND_5GHZ]; |
909 | if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED) |
910 | priv->rx_diversity_mask = 3; |
911 | if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED) |
912 | priv->tx_diversity_mask = 3; |
913 | |
914 | if (!is_valid_ether_addr(addr: dev->wiphy->perm_addr)) { |
915 | u8 perm_addr[ETH_ALEN]; |
916 | |
917 | wiphy_warn(dev->wiphy, |
918 | "Invalid hwaddr! Using randomly generated MAC addr\n" ); |
919 | eth_random_addr(addr: perm_addr); |
920 | SET_IEEE80211_PERM_ADDR(hw: dev, addr: perm_addr); |
921 | } |
922 | |
923 | priv->cur_rssi = &p54_rssi_default; |
924 | |
925 | wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n" , |
926 | dev->wiphy->perm_addr, priv->version, |
927 | p54_rf_chips[priv->rxhw]); |
928 | |
929 | return 0; |
930 | |
931 | err: |
932 | kfree(objp: priv->iq_autocal); |
933 | kfree(objp: priv->output_limit); |
934 | kfree(objp: priv->curve_data); |
935 | kfree(objp: priv->rssi_db); |
936 | kfree(objp: priv->survey); |
937 | priv->iq_autocal = NULL; |
938 | priv->output_limit = NULL; |
939 | priv->curve_data = NULL; |
940 | priv->rssi_db = NULL; |
941 | priv->survey = NULL; |
942 | |
943 | wiphy_err(dev->wiphy, "eeprom parse failed!\n" ); |
944 | return err; |
945 | } |
946 | EXPORT_SYMBOL_GPL(p54_parse_eeprom); |
947 | |
948 | int p54_read_eeprom(struct ieee80211_hw *dev) |
949 | { |
950 | struct p54_common *priv = dev->priv; |
951 | size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize; |
952 | int ret = -ENOMEM; |
953 | void *eeprom; |
954 | |
955 | maxblocksize = EEPROM_READBACK_LEN; |
956 | if (priv->fw_var >= 0x509) |
957 | maxblocksize -= 0xc; |
958 | else |
959 | maxblocksize -= 0x4; |
960 | |
961 | eeprom = kzalloc(size: eeprom_size, GFP_KERNEL); |
962 | if (unlikely(!eeprom)) |
963 | goto free; |
964 | |
965 | while (eeprom_size) { |
966 | blocksize = min(eeprom_size, maxblocksize); |
967 | ret = p54_download_eeprom(priv, buf: eeprom + offset, |
968 | offset, len: blocksize); |
969 | if (unlikely(ret)) |
970 | goto free; |
971 | |
972 | offset += blocksize; |
973 | eeprom_size -= blocksize; |
974 | } |
975 | |
976 | ret = p54_parse_eeprom(dev, eeprom, offset); |
977 | free: |
978 | kfree(objp: eeprom); |
979 | return ret; |
980 | } |
981 | EXPORT_SYMBOL_GPL(p54_read_eeprom); |
982 | |