Commit | Line | Data |
---|---|---|
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 | ||
4c8a32f5 CL |
19 | #include <linux/firmware.h> |
20 | #include <linux/etherdevice.h> | |
1a9b6679 | 21 | #include <linux/sort.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
4c8a32f5 CL |
23 | |
24 | #include <net/mac80211.h> | |
d7eb50c0 | 25 | #include <linux/crc-ccitt.h> |
ee40fa06 | 26 | #include <linux/export.h> |
4c8a32f5 CL |
27 | |
28 | #include "p54.h" | |
29 | #include "eeprom.h" | |
30 | #include "lmac.h" | |
31 | ||
32 | static 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 |
47 | static 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 | ||
7a047f4f CL |
58 | static struct p54_rssi_db_entry p54_rssi_default = { |
59 | /* | |
60 | * The defaults are taken from usb-logs of the | |
61 | * vendor driver. So, they should be safe to | |
62 | * use in case we can't get a match from the | |
63 | * rssi <-> dBm conversion database. | |
64 | */ | |
65 | .mul = 130, | |
66 | .add = -398, | |
67 | }; | |
68 | ||
1a9b6679 CL |
69 | #define CHAN_HAS_CAL BIT(0) |
70 | #define CHAN_HAS_LIMIT BIT(1) | |
71 | #define CHAN_HAS_CURVE BIT(2) | |
72 | #define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE) | |
73 | ||
74 | struct p54_channel_entry { | |
75 | u16 freq; | |
76 | u16 data; | |
77 | int index; | |
9bc63816 | 78 | int max_power; |
57fbcce3 | 79 | enum nl80211_band band; |
4c8a32f5 CL |
80 | }; |
81 | ||
1a9b6679 CL |
82 | struct p54_channel_list { |
83 | struct p54_channel_entry *channels; | |
84 | size_t entries; | |
85 | size_t max_entries; | |
57fbcce3 | 86 | size_t band_channel_num[NUM_NL80211_BANDS]; |
4c8a32f5 CL |
87 | }; |
88 | ||
1a9b6679 CL |
89 | static int p54_get_band_from_freq(u16 freq) |
90 | { | |
91 | /* FIXME: sync these values with the 802.11 spec */ | |
92 | ||
93 | if ((freq >= 2412) && (freq <= 2484)) | |
57fbcce3 | 94 | return NL80211_BAND_2GHZ; |
1a9b6679 CL |
95 | |
96 | if ((freq >= 4920) && (freq <= 5825)) | |
57fbcce3 | 97 | return NL80211_BAND_5GHZ; |
1a9b6679 CL |
98 | |
99 | return -1; | |
100 | } | |
101 | ||
7a047f4f CL |
102 | static int same_band(u16 freq, u16 freq2) |
103 | { | |
104 | return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq2); | |
105 | } | |
106 | ||
1a9b6679 CL |
107 | static int p54_compare_channels(const void *_a, |
108 | const void *_b) | |
109 | { | |
110 | const struct p54_channel_entry *a = _a; | |
111 | const struct p54_channel_entry *b = _b; | |
112 | ||
192abece | 113 | return a->freq - b->freq; |
1a9b6679 CL |
114 | } |
115 | ||
7a047f4f CL |
116 | static int p54_compare_rssichan(const void *_a, |
117 | const void *_b) | |
118 | { | |
119 | const struct p54_rssi_db_entry *a = _a; | |
120 | const struct p54_rssi_db_entry *b = _b; | |
121 | ||
122 | return a->freq - b->freq; | |
123 | } | |
124 | ||
1a9b6679 CL |
125 | static int p54_fill_band_bitrates(struct ieee80211_hw *dev, |
126 | struct ieee80211_supported_band *band_entry, | |
57fbcce3 | 127 | enum nl80211_band band) |
1a9b6679 CL |
128 | { |
129 | /* TODO: generate rate array dynamically */ | |
130 | ||
131 | switch (band) { | |
57fbcce3 | 132 | case NL80211_BAND_2GHZ: |
1a9b6679 CL |
133 | band_entry->bitrates = p54_bgrates; |
134 | band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); | |
135 | break; | |
57fbcce3 | 136 | case NL80211_BAND_5GHZ: |
1a9b6679 CL |
137 | band_entry->bitrates = p54_arates; |
138 | band_entry->n_bitrates = ARRAY_SIZE(p54_arates); | |
139 | break; | |
140 | default: | |
141 | return -EINVAL; | |
142 | } | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static int p54_generate_band(struct ieee80211_hw *dev, | |
148 | struct p54_channel_list *list, | |
0d78156e | 149 | unsigned int *chan_num, |
57fbcce3 | 150 | enum nl80211_band band) |
1a9b6679 CL |
151 | { |
152 | struct p54_common *priv = dev->priv; | |
153 | struct ieee80211_supported_band *tmp, *old; | |
154 | unsigned int i, j; | |
155 | int ret = -ENOMEM; | |
156 | ||
157 | if ((!list->entries) || (!list->band_channel_num[band])) | |
93a59d75 | 158 | return -EINVAL; |
1a9b6679 CL |
159 | |
160 | tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); | |
161 | if (!tmp) | |
162 | goto err_out; | |
163 | ||
6396bb22 KC |
164 | tmp->channels = kcalloc(list->band_channel_num[band], |
165 | sizeof(struct ieee80211_channel), | |
166 | GFP_KERNEL); | |
1a9b6679 CL |
167 | if (!tmp->channels) |
168 | goto err_out; | |
169 | ||
170 | ret = p54_fill_band_bitrates(dev, tmp, band); | |
171 | if (ret) | |
172 | goto err_out; | |
173 | ||
174 | for (i = 0, j = 0; (j < list->band_channel_num[band]) && | |
175 | (i < list->entries); i++) { | |
a3162eed | 176 | struct p54_channel_entry *chan = &list->channels[i]; |
9bc63816 | 177 | struct ieee80211_channel *dest = &tmp->channels[j]; |
1a9b6679 | 178 | |
a3162eed | 179 | if (chan->band != band) |
1a9b6679 CL |
180 | continue; |
181 | ||
a3162eed CL |
182 | if (chan->data != CHAN_HAS_ALL) { |
183 | wiphy_err(dev->wiphy, "%s%s%s is/are missing for " | |
184 | "channel:%d [%d MHz].\n", | |
185 | (chan->data & CHAN_HAS_CAL ? "" : | |
c96c31e4 | 186 | " [iqauto calibration data]"), |
a3162eed | 187 | (chan->data & CHAN_HAS_LIMIT ? "" : |
c96c31e4 | 188 | " [output power limits]"), |
a3162eed | 189 | (chan->data & CHAN_HAS_CURVE ? "" : |
c96c31e4 | 190 | " [curve data]"), |
a3162eed | 191 | chan->index, chan->freq); |
93a59d75 | 192 | continue; |
1a9b6679 CL |
193 | } |
194 | ||
9bc63816 CL |
195 | dest->band = chan->band; |
196 | dest->center_freq = chan->freq; | |
197 | dest->max_power = chan->max_power; | |
0d78156e CL |
198 | priv->survey[*chan_num].channel = &tmp->channels[j]; |
199 | priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM | | |
4ed20beb JB |
200 | SURVEY_INFO_TIME | |
201 | SURVEY_INFO_TIME_BUSY | | |
202 | SURVEY_INFO_TIME_TX; | |
9bc63816 | 203 | dest->hw_value = (*chan_num); |
1a9b6679 | 204 | j++; |
0d78156e | 205 | (*chan_num)++; |
1a9b6679 CL |
206 | } |
207 | ||
93a59d75 | 208 | if (j == 0) { |
5db55844 | 209 | wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n", |
57fbcce3 | 210 | (band == NL80211_BAND_2GHZ) ? 2 : 5); |
93a59d75 CL |
211 | |
212 | ret = -ENODATA; | |
213 | goto err_out; | |
214 | } | |
215 | ||
216 | tmp->n_channels = j; | |
1a9b6679 CL |
217 | old = priv->band_table[band]; |
218 | priv->band_table[band] = tmp; | |
219 | if (old) { | |
220 | kfree(old->channels); | |
221 | kfree(old); | |
222 | } | |
223 | ||
224 | return 0; | |
225 | ||
226 | err_out: | |
227 | if (tmp) { | |
228 | kfree(tmp->channels); | |
229 | kfree(tmp); | |
230 | } | |
231 | ||
232 | return ret; | |
233 | } | |
234 | ||
9bc63816 CL |
235 | static struct p54_channel_entry *p54_update_channel_param(struct p54_channel_list *list, |
236 | u16 freq, u16 data) | |
1a9b6679 | 237 | { |
9bc63816 CL |
238 | int i; |
239 | struct p54_channel_entry *entry = NULL; | |
1a9b6679 CL |
240 | |
241 | /* | |
242 | * usually all lists in the eeprom are mostly sorted. | |
243 | * so it's very likely that the entry we are looking for | |
244 | * is right at the end of the list | |
245 | */ | |
246 | for (i = list->entries; i >= 0; i--) { | |
247 | if (freq == list->channels[i].freq) { | |
9bc63816 | 248 | entry = &list->channels[i]; |
1a9b6679 CL |
249 | break; |
250 | } | |
251 | } | |
252 | ||
253 | if ((i < 0) && (list->entries < list->max_entries)) { | |
254 | /* entry does not exist yet. Initialize a new one. */ | |
9bc63816 | 255 | int band = p54_get_band_from_freq(freq); |
1a9b6679 CL |
256 | |
257 | /* | |
258 | * filter out frequencies which don't belong into | |
259 | * any supported band. | |
260 | */ | |
9bc63816 CL |
261 | if (band >= 0) { |
262 | i = list->entries++; | |
263 | list->band_channel_num[band]++; | |
264 | ||
265 | entry = &list->channels[i]; | |
266 | entry->freq = freq; | |
267 | entry->band = band; | |
268 | entry->index = ieee80211_frequency_to_channel(freq); | |
269 | entry->max_power = 0; | |
270 | entry->data = 0; | |
271 | } | |
272 | } | |
1a9b6679 | 273 | |
9bc63816 CL |
274 | if (entry) |
275 | entry->data |= data; | |
1a9b6679 | 276 | |
9bc63816 CL |
277 | return entry; |
278 | } | |
279 | ||
280 | static int p54_get_maxpower(struct p54_common *priv, void *data) | |
281 | { | |
282 | switch (priv->rxhw & PDR_SYNTH_FRONTEND_MASK) { | |
283 | case PDR_SYNTH_FRONTEND_LONGBOW: { | |
284 | struct pda_channel_output_limit_longbow *pda = data; | |
285 | int j; | |
286 | u16 rawpower = 0; | |
287 | pda = data; | |
288 | for (j = 0; j < ARRAY_SIZE(pda->point); j++) { | |
289 | struct pda_channel_output_limit_point_longbow *point = | |
290 | &pda->point[j]; | |
22c5649e CL |
291 | rawpower = max_t(u16, |
292 | rawpower, le16_to_cpu(point->val_qpsk)); | |
293 | rawpower = max_t(u16, | |
294 | rawpower, le16_to_cpu(point->val_bpsk)); | |
295 | rawpower = max_t(u16, | |
296 | rawpower, le16_to_cpu(point->val_16qam)); | |
297 | rawpower = max_t(u16, | |
298 | rawpower, le16_to_cpu(point->val_64qam)); | |
9bc63816 CL |
299 | } |
300 | /* longbow seems to use 1/16 dBm units */ | |
301 | return rawpower / 16; | |
302 | } | |
303 | ||
304 | case PDR_SYNTH_FRONTEND_DUETTE3: | |
305 | case PDR_SYNTH_FRONTEND_DUETTE2: | |
306 | case PDR_SYNTH_FRONTEND_FRISBEE: | |
307 | case PDR_SYNTH_FRONTEND_XBOW: { | |
308 | struct pda_channel_output_limit *pda = data; | |
309 | u8 rawpower = 0; | |
310 | rawpower = max(rawpower, pda->val_qpsk); | |
311 | rawpower = max(rawpower, pda->val_bpsk); | |
312 | rawpower = max(rawpower, pda->val_16qam); | |
313 | rawpower = max(rawpower, pda->val_64qam); | |
314 | /* raw values are in 1/4 dBm units */ | |
315 | return rawpower / 4; | |
316 | } | |
317 | ||
318 | default: | |
319 | return 20; | |
1a9b6679 CL |
320 | } |
321 | } | |
322 | ||
323 | static int p54_generate_channel_lists(struct ieee80211_hw *dev) | |
324 | { | |
325 | struct p54_common *priv = dev->priv; | |
326 | struct p54_channel_list *list; | |
0d78156e | 327 | unsigned int i, j, k, max_channel_num; |
93a59d75 | 328 | int ret = 0; |
1a9b6679 CL |
329 | u16 freq; |
330 | ||
331 | if ((priv->iq_autocal_len != priv->curve_data->entries) || | |
332 | (priv->iq_autocal_len != priv->output_limit->entries)) | |
c96c31e4 JP |
333 | wiphy_err(dev->wiphy, |
334 | "Unsupported or damaged EEPROM detected. " | |
335 | "You may not be able to use all channels.\n"); | |
1a9b6679 CL |
336 | |
337 | max_channel_num = max_t(unsigned int, priv->output_limit->entries, | |
338 | priv->iq_autocal_len); | |
339 | max_channel_num = max_t(unsigned int, max_channel_num, | |
340 | priv->curve_data->entries); | |
341 | ||
342 | list = kzalloc(sizeof(*list), GFP_KERNEL); | |
93a59d75 CL |
343 | if (!list) { |
344 | ret = -ENOMEM; | |
1a9b6679 | 345 | goto free; |
93a59d75 | 346 | } |
0d78156e | 347 | priv->chan_num = max_channel_num; |
6396bb22 | 348 | priv->survey = kcalloc(max_channel_num, sizeof(struct survey_info), |
0d78156e CL |
349 | GFP_KERNEL); |
350 | if (!priv->survey) { | |
351 | ret = -ENOMEM; | |
352 | goto free; | |
353 | } | |
1a9b6679 CL |
354 | |
355 | list->max_entries = max_channel_num; | |
6396bb22 KC |
356 | list->channels = kcalloc(max_channel_num, |
357 | sizeof(struct p54_channel_entry), | |
358 | GFP_KERNEL); | |
0d91f22b JL |
359 | if (!list->channels) { |
360 | ret = -ENOMEM; | |
1a9b6679 | 361 | goto free; |
0d91f22b | 362 | } |
1a9b6679 CL |
363 | |
364 | for (i = 0; i < max_channel_num; i++) { | |
365 | if (i < priv->iq_autocal_len) { | |
366 | freq = le16_to_cpu(priv->iq_autocal[i].freq); | |
367 | p54_update_channel_param(list, freq, CHAN_HAS_CAL); | |
368 | } | |
369 | ||
370 | if (i < priv->output_limit->entries) { | |
9bc63816 CL |
371 | struct p54_channel_entry *tmp; |
372 | ||
373 | void *data = (void *) ((unsigned long) i * | |
374 | priv->output_limit->entry_size + | |
375 | priv->output_limit->offset + | |
376 | priv->output_limit->data); | |
377 | ||
378 | freq = le16_to_cpup((__le16 *) data); | |
379 | tmp = p54_update_channel_param(list, freq, | |
380 | CHAN_HAS_LIMIT); | |
381 | if (tmp) { | |
382 | tmp->max_power = p54_get_maxpower(priv, data); | |
383 | } | |
1a9b6679 CL |
384 | } |
385 | ||
386 | if (i < priv->curve_data->entries) { | |
387 | freq = le16_to_cpup((__le16 *) (i * | |
388 | priv->curve_data->entry_size + | |
389 | priv->curve_data->offset + | |
390 | priv->curve_data->data)); | |
391 | ||
392 | p54_update_channel_param(list, freq, CHAN_HAS_CURVE); | |
393 | } | |
394 | } | |
395 | ||
192abece | 396 | /* sort the channel list by frequency */ |
1a9b6679 CL |
397 | sort(list->channels, list->entries, sizeof(struct p54_channel_entry), |
398 | p54_compare_channels, NULL); | |
399 | ||
0d78156e | 400 | k = 0; |
57fbcce3 | 401 | for (i = 0, j = 0; i < NUM_NL80211_BANDS; i++) { |
0d78156e | 402 | if (p54_generate_band(dev, list, &k, i) == 0) |
1a9b6679 | 403 | j++; |
1a9b6679 CL |
404 | } |
405 | if (j == 0) { | |
406 | /* no useable band available. */ | |
407 | ret = -EINVAL; | |
408 | } | |
409 | ||
410 | free: | |
411 | if (list) { | |
412 | kfree(list->channels); | |
413 | kfree(list); | |
414 | } | |
0d78156e CL |
415 | if (ret) { |
416 | kfree(priv->survey); | |
417 | priv->survey = NULL; | |
418 | } | |
1a9b6679 CL |
419 | |
420 | return ret; | |
421 | } | |
422 | ||
4c8a32f5 CL |
423 | static int p54_convert_rev0(struct ieee80211_hw *dev, |
424 | struct pda_pa_curve_data *curve_data) | |
425 | { | |
426 | struct p54_common *priv = dev->priv; | |
427 | struct p54_pa_curve_data_sample *dst; | |
428 | struct pda_pa_curve_data_sample_rev0 *src; | |
429 | size_t cd_len = sizeof(*curve_data) + | |
430 | (curve_data->points_per_channel*sizeof(*dst) + 2) * | |
431 | curve_data->channels; | |
432 | unsigned int i, j; | |
433 | void *source, *target; | |
434 | ||
435 | priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len, | |
436 | GFP_KERNEL); | |
437 | if (!priv->curve_data) | |
438 | return -ENOMEM; | |
439 | ||
440 | priv->curve_data->entries = curve_data->channels; | |
441 | priv->curve_data->entry_size = sizeof(__le16) + | |
442 | sizeof(*dst) * curve_data->points_per_channel; | |
443 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); | |
444 | priv->curve_data->len = cd_len; | |
445 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); | |
446 | source = curve_data->data; | |
447 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; | |
448 | for (i = 0; i < curve_data->channels; i++) { | |
449 | __le16 *freq = source; | |
450 | source += sizeof(__le16); | |
451 | *((__le16 *)target) = *freq; | |
452 | target += sizeof(__le16); | |
453 | for (j = 0; j < curve_data->points_per_channel; j++) { | |
454 | dst = target; | |
455 | src = source; | |
456 | ||
457 | dst->rf_power = src->rf_power; | |
458 | dst->pa_detector = src->pa_detector; | |
459 | dst->data_64qam = src->pcv; | |
460 | /* "invent" the points for the other modulations */ | |
461 | #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y)) | |
462 | dst->data_16qam = SUB(src->pcv, 12); | |
463 | dst->data_qpsk = SUB(dst->data_16qam, 12); | |
464 | dst->data_bpsk = SUB(dst->data_qpsk, 12); | |
465 | dst->data_barker = SUB(dst->data_bpsk, 14); | |
466 | #undef SUB | |
467 | target += sizeof(*dst); | |
468 | source += sizeof(*src); | |
469 | } | |
470 | } | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
475 | static int p54_convert_rev1(struct ieee80211_hw *dev, | |
476 | struct pda_pa_curve_data *curve_data) | |
477 | { | |
478 | struct p54_common *priv = dev->priv; | |
479 | struct p54_pa_curve_data_sample *dst; | |
480 | struct pda_pa_curve_data_sample_rev1 *src; | |
481 | size_t cd_len = sizeof(*curve_data) + | |
482 | (curve_data->points_per_channel*sizeof(*dst) + 2) * | |
483 | curve_data->channels; | |
484 | unsigned int i, j; | |
485 | void *source, *target; | |
486 | ||
487 | priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data), | |
488 | GFP_KERNEL); | |
489 | if (!priv->curve_data) | |
490 | return -ENOMEM; | |
491 | ||
492 | priv->curve_data->entries = curve_data->channels; | |
493 | priv->curve_data->entry_size = sizeof(__le16) + | |
494 | sizeof(*dst) * curve_data->points_per_channel; | |
495 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); | |
496 | priv->curve_data->len = cd_len; | |
497 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); | |
498 | source = curve_data->data; | |
499 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; | |
500 | for (i = 0; i < curve_data->channels; i++) { | |
501 | __le16 *freq = source; | |
502 | source += sizeof(__le16); | |
503 | *((__le16 *)target) = *freq; | |
504 | target += sizeof(__le16); | |
505 | for (j = 0; j < curve_data->points_per_channel; j++) { | |
506 | memcpy(target, source, sizeof(*src)); | |
507 | ||
508 | target += sizeof(*dst); | |
509 | source += sizeof(*src); | |
510 | } | |
511 | source++; | |
512 | } | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
517 | static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2", | |
518 | "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" }; | |
519 | ||
7a047f4f CL |
520 | static int p54_parse_rssical(struct ieee80211_hw *dev, |
521 | u8 *data, int len, u16 type) | |
4c8a32f5 CL |
522 | { |
523 | struct p54_common *priv = dev->priv; | |
7a047f4f CL |
524 | struct p54_rssi_db_entry *entry; |
525 | size_t db_len, entries; | |
526 | int offset = 0, i; | |
527 | ||
528 | if (type != PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { | |
529 | entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2; | |
530 | if (len != sizeof(struct pda_rssi_cal_entry) * entries) { | |
531 | wiphy_err(dev->wiphy, "rssical size mismatch.\n"); | |
532 | goto err_data; | |
533 | } | |
534 | } else { | |
535 | /* | |
536 | * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...) | |
537 | * have an empty two byte header. | |
538 | */ | |
539 | if (*((__le16 *)&data[offset]) == cpu_to_le16(0)) | |
540 | offset += 2; | |
4c8a32f5 | 541 | |
7a047f4f CL |
542 | entries = (len - offset) / |
543 | sizeof(struct pda_rssi_cal_ext_entry); | |
4c8a32f5 | 544 | |
6dac3447 DC |
545 | if (len < offset || |
546 | (len - offset) % sizeof(struct pda_rssi_cal_ext_entry) || | |
547 | entries == 0) { | |
7a047f4f CL |
548 | wiphy_err(dev->wiphy, "invalid rssi database.\n"); |
549 | goto err_data; | |
550 | } | |
551 | } | |
4c8a32f5 | 552 | |
7a047f4f CL |
553 | db_len = sizeof(*entry) * entries; |
554 | priv->rssi_db = kzalloc(db_len + sizeof(*priv->rssi_db), GFP_KERNEL); | |
555 | if (!priv->rssi_db) | |
556 | return -ENOMEM; | |
557 | ||
558 | priv->rssi_db->offset = 0; | |
559 | priv->rssi_db->entries = entries; | |
560 | priv->rssi_db->entry_size = sizeof(*entry); | |
561 | priv->rssi_db->len = db_len; | |
562 | ||
563 | entry = (void *)((unsigned long)priv->rssi_db->data + priv->rssi_db->offset); | |
564 | if (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { | |
565 | struct pda_rssi_cal_ext_entry *cal = (void *) &data[offset]; | |
566 | ||
567 | for (i = 0; i < entries; i++) { | |
568 | entry[i].freq = le16_to_cpu(cal[i].freq); | |
569 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); | |
570 | entry[i].add = (s16) le16_to_cpu(cal[i].add); | |
571 | } | |
572 | } else { | |
573 | struct pda_rssi_cal_entry *cal = (void *) &data[offset]; | |
574 | ||
575 | for (i = 0; i < entries; i++) { | |
ce6cac88 | 576 | u16 freq = 0; |
7a047f4f | 577 | switch (i) { |
57fbcce3 | 578 | case NL80211_BAND_2GHZ: |
7a047f4f CL |
579 | freq = 2437; |
580 | break; | |
57fbcce3 | 581 | case NL80211_BAND_5GHZ: |
7a047f4f CL |
582 | freq = 5240; |
583 | break; | |
584 | } | |
585 | ||
586 | entry[i].freq = freq; | |
587 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); | |
588 | entry[i].add = (s16) le16_to_cpu(cal[i].add); | |
589 | } | |
4c8a32f5 CL |
590 | } |
591 | ||
7a047f4f CL |
592 | /* sort the list by channel frequency */ |
593 | sort(entry, entries, sizeof(*entry), p54_compare_rssichan, NULL); | |
594 | return 0; | |
595 | ||
596 | err_data: | |
597 | wiphy_err(dev->wiphy, | |
598 | "rssi calibration data packing type:(%x) len:%d.\n", | |
599 | type, len); | |
600 | ||
601 | print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, data, len); | |
602 | ||
603 | wiphy_err(dev->wiphy, "please report this issue.\n"); | |
604 | return -EINVAL; | |
605 | } | |
606 | ||
607 | struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *priv, const u16 freq) | |
608 | { | |
a5a7103f | 609 | struct p54_rssi_db_entry *entry; |
7a047f4f CL |
610 | int i, found = -1; |
611 | ||
a5a7103f FF |
612 | if (!priv->rssi_db) |
613 | return &p54_rssi_default; | |
614 | ||
615 | entry = (void *)(priv->rssi_db->data + priv->rssi_db->offset); | |
7a047f4f CL |
616 | for (i = 0; i < priv->rssi_db->entries; i++) { |
617 | if (!same_band(freq, entry[i].freq)) | |
618 | continue; | |
619 | ||
620 | if (found == -1) { | |
621 | found = i; | |
622 | continue; | |
623 | } | |
624 | ||
625 | /* nearest match */ | |
626 | if (abs(freq - entry[i].freq) < | |
627 | abs(freq - entry[found].freq)) { | |
628 | found = i; | |
629 | continue; | |
630 | } else { | |
631 | break; | |
632 | } | |
4c8a32f5 | 633 | } |
7a047f4f CL |
634 | |
635 | return found < 0 ? &p54_rssi_default : &entry[found]; | |
4c8a32f5 CL |
636 | } |
637 | ||
638 | static void p54_parse_default_country(struct ieee80211_hw *dev, | |
639 | void *data, int len) | |
640 | { | |
641 | struct pda_country *country; | |
642 | ||
643 | if (len != sizeof(*country)) { | |
c96c31e4 JP |
644 | wiphy_err(dev->wiphy, |
645 | "found possible invalid default country eeprom entry. (entry size: %d)\n", | |
646 | len); | |
4c8a32f5 CL |
647 | |
648 | print_hex_dump_bytes("country:", DUMP_PREFIX_NONE, | |
649 | data, len); | |
650 | ||
c96c31e4 | 651 | wiphy_err(dev->wiphy, "please report this issue.\n"); |
4c8a32f5 CL |
652 | return; |
653 | } | |
654 | ||
655 | country = (struct pda_country *) data; | |
656 | if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO) | |
657 | regulatory_hint(dev->wiphy, country->alpha2); | |
658 | else { | |
659 | /* TODO: | |
660 | * write a shared/common function that converts | |
661 | * "Regulatory domain codes" (802.11-2007 14.8.2.2) | |
662 | * into ISO/IEC 3166-1 alpha2 for regulatory_hint. | |
663 | */ | |
664 | } | |
665 | } | |
666 | ||
667 | static int p54_convert_output_limits(struct ieee80211_hw *dev, | |
668 | u8 *data, size_t len) | |
669 | { | |
670 | struct p54_common *priv = dev->priv; | |
671 | ||
672 | if (len < 2) | |
673 | return -EINVAL; | |
674 | ||
675 | if (data[0] != 0) { | |
c96c31e4 JP |
676 | wiphy_err(dev->wiphy, "unknown output power db revision:%x\n", |
677 | data[0]); | |
4c8a32f5 CL |
678 | return -EINVAL; |
679 | } | |
680 | ||
681 | if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len) | |
682 | return -EINVAL; | |
683 | ||
684 | priv->output_limit = kmalloc(data[1] * | |
685 | sizeof(struct pda_channel_output_limit) + | |
686 | sizeof(*priv->output_limit), GFP_KERNEL); | |
687 | ||
688 | if (!priv->output_limit) | |
689 | return -ENOMEM; | |
690 | ||
691 | priv->output_limit->offset = 0; | |
692 | priv->output_limit->entries = data[1]; | |
693 | priv->output_limit->entry_size = | |
694 | sizeof(struct pda_channel_output_limit); | |
695 | priv->output_limit->len = priv->output_limit->entry_size * | |
696 | priv->output_limit->entries + | |
697 | priv->output_limit->offset; | |
698 | ||
699 | memcpy(priv->output_limit->data, &data[2], | |
700 | data[1] * sizeof(struct pda_channel_output_limit)); | |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src, | |
706 | size_t total_len) | |
707 | { | |
708 | struct p54_cal_database *dst; | |
709 | size_t payload_len, entries, entry_size, offset; | |
710 | ||
711 | payload_len = le16_to_cpu(src->len); | |
712 | entries = le16_to_cpu(src->entries); | |
713 | entry_size = le16_to_cpu(src->entry_size); | |
714 | offset = le16_to_cpu(src->offset); | |
715 | if (((entries * entry_size + offset) != payload_len) || | |
716 | (payload_len + sizeof(*src) != total_len)) | |
717 | return NULL; | |
718 | ||
719 | dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL); | |
720 | if (!dst) | |
721 | return NULL; | |
722 | ||
723 | dst->entries = entries; | |
724 | dst->entry_size = entry_size; | |
725 | dst->offset = offset; | |
726 | dst->len = payload_len; | |
727 | ||
728 | memcpy(dst->data, src->data, payload_len); | |
729 | return dst; | |
730 | } | |
731 | ||
732 | int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) | |
733 | { | |
734 | struct p54_common *priv = dev->priv; | |
e6a3f551 | 735 | struct eeprom_pda_wrap *wrap; |
4c8a32f5 CL |
736 | struct pda_entry *entry; |
737 | unsigned int data_len, entry_len; | |
738 | void *tmp; | |
739 | int err; | |
740 | u8 *end = (u8 *)eeprom + len; | |
741 | u16 synth = 0; | |
d7eb50c0 | 742 | u16 crc16 = ~0; |
4c8a32f5 CL |
743 | |
744 | wrap = (struct eeprom_pda_wrap *) eeprom; | |
745 | entry = (void *)wrap->data + le16_to_cpu(wrap->len); | |
746 | ||
747 | /* verify that at least the entry length/code fits */ | |
748 | while ((u8 *)entry <= end - sizeof(*entry)) { | |
749 | entry_len = le16_to_cpu(entry->len); | |
750 | data_len = ((entry_len - 1) << 1); | |
751 | ||
752 | /* abort if entry exceeds whole structure */ | |
753 | if ((u8 *)entry + sizeof(*entry) + data_len > end) | |
754 | break; | |
755 | ||
756 | switch (le16_to_cpu(entry->code)) { | |
757 | case PDR_MAC_ADDRESS: | |
758 | if (data_len != ETH_ALEN) | |
759 | break; | |
760 | SET_IEEE80211_PERM_ADDR(dev, entry->data); | |
761 | break; | |
762 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS: | |
763 | if (priv->output_limit) | |
764 | break; | |
765 | err = p54_convert_output_limits(dev, entry->data, | |
766 | data_len); | |
767 | if (err) | |
768 | goto err; | |
769 | break; | |
770 | case PDR_PRISM_PA_CAL_CURVE_DATA: { | |
771 | struct pda_pa_curve_data *curve_data = | |
772 | (struct pda_pa_curve_data *)entry->data; | |
773 | if (data_len < sizeof(*curve_data)) { | |
774 | err = -EINVAL; | |
775 | goto err; | |
776 | } | |
777 | ||
778 | switch (curve_data->cal_method_rev) { | |
779 | case 0: | |
780 | err = p54_convert_rev0(dev, curve_data); | |
781 | break; | |
782 | case 1: | |
783 | err = p54_convert_rev1(dev, curve_data); | |
784 | break; | |
785 | default: | |
c96c31e4 JP |
786 | wiphy_err(dev->wiphy, |
787 | "unknown curve data revision %d\n", | |
788 | curve_data->cal_method_rev); | |
4c8a32f5 CL |
789 | err = -ENODEV; |
790 | break; | |
791 | } | |
792 | if (err) | |
793 | goto err; | |
794 | } | |
795 | break; | |
796 | case PDR_PRISM_ZIF_TX_IQ_CALIBRATION: | |
27b81bbe JL |
797 | priv->iq_autocal = kmemdup(entry->data, data_len, |
798 | GFP_KERNEL); | |
4c8a32f5 CL |
799 | if (!priv->iq_autocal) { |
800 | err = -ENOMEM; | |
801 | goto err; | |
802 | } | |
803 | ||
4c8a32f5 CL |
804 | priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry); |
805 | break; | |
806 | case PDR_DEFAULT_COUNTRY: | |
807 | p54_parse_default_country(dev, entry->data, data_len); | |
808 | break; | |
809 | case PDR_INTERFACE_LIST: | |
810 | tmp = entry->data; | |
811 | while ((u8 *)tmp < entry->data + data_len) { | |
812 | struct exp_if *exp_if = tmp; | |
813 | if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000)) | |
814 | synth = le16_to_cpu(exp_if->variant); | |
815 | tmp += sizeof(*exp_if); | |
816 | } | |
817 | break; | |
818 | case PDR_HARDWARE_PLATFORM_COMPONENT_ID: | |
819 | if (data_len < 2) | |
820 | break; | |
821 | priv->version = *(u8 *)(entry->data + 1); | |
822 | break; | |
823 | case PDR_RSSI_LINEAR_APPROXIMATION: | |
824 | case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND: | |
825 | case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED: | |
7a047f4f CL |
826 | err = p54_parse_rssical(dev, entry->data, data_len, |
827 | le16_to_cpu(entry->code)); | |
828 | if (err) | |
829 | goto err; | |
4c8a32f5 | 830 | break; |
7a047f4f CL |
831 | case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: { |
832 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
833 | __le16 *src; | |
834 | u16 *dst; | |
4c8a32f5 CL |
835 | int i; |
836 | ||
7a047f4f CL |
837 | if (priv->rssi_db || data_len < sizeof(*pda)) |
838 | break; | |
839 | ||
840 | priv->rssi_db = p54_convert_db(pda, data_len); | |
841 | if (!priv->rssi_db) | |
842 | break; | |
843 | ||
844 | src = (void *) priv->rssi_db->data; | |
845 | dst = (void *) priv->rssi_db->data; | |
846 | ||
847 | for (i = 0; i < priv->rssi_db->entries; i++) | |
4c8a32f5 | 848 | *(dst++) = (s16) le16_to_cpu(*(src++)); |
7a047f4f | 849 | |
4c8a32f5 CL |
850 | } |
851 | break; | |
852 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: { | |
853 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
854 | if (priv->output_limit || data_len < sizeof(*pda)) | |
855 | break; | |
856 | priv->output_limit = p54_convert_db(pda, data_len); | |
857 | } | |
858 | break; | |
859 | case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: { | |
860 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
861 | if (priv->curve_data || data_len < sizeof(*pda)) | |
862 | break; | |
863 | priv->curve_data = p54_convert_db(pda, data_len); | |
864 | } | |
865 | break; | |
866 | case PDR_END: | |
d7eb50c0 CL |
867 | crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry)); |
868 | if (crc16 != le16_to_cpup((__le16 *)entry->data)) { | |
869 | wiphy_err(dev->wiphy, "eeprom failed checksum " | |
870 | "test!\n"); | |
871 | err = -ENOMSG; | |
872 | goto err; | |
873 | } else { | |
874 | goto good_eeprom; | |
875 | } | |
4c8a32f5 CL |
876 | break; |
877 | default: | |
878 | break; | |
879 | } | |
880 | ||
d7eb50c0 CL |
881 | crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2); |
882 | entry = (void *)entry + (entry_len + 1) * 2; | |
4c8a32f5 CL |
883 | } |
884 | ||
d7eb50c0 CL |
885 | wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n"); |
886 | err = -ENODATA; | |
887 | goto err; | |
888 | ||
889 | good_eeprom: | |
4c8a32f5 CL |
890 | if (!synth || !priv->iq_autocal || !priv->output_limit || |
891 | !priv->curve_data) { | |
c96c31e4 JP |
892 | wiphy_err(dev->wiphy, |
893 | "not all required entries found in eeprom!\n"); | |
4c8a32f5 CL |
894 | err = -EINVAL; |
895 | goto err; | |
896 | } | |
897 | ||
9bc63816 CL |
898 | priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; |
899 | ||
1a9b6679 CL |
900 | err = p54_generate_channel_lists(dev); |
901 | if (err) | |
902 | goto err; | |
903 | ||
4c8a32f5 CL |
904 | if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW) |
905 | p54_init_xbow_synth(priv); | |
906 | if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) | |
57fbcce3 JB |
907 | dev->wiphy->bands[NL80211_BAND_2GHZ] = |
908 | priv->band_table[NL80211_BAND_2GHZ]; | |
4c8a32f5 | 909 | if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) |
57fbcce3 JB |
910 | dev->wiphy->bands[NL80211_BAND_5GHZ] = |
911 | priv->band_table[NL80211_BAND_5GHZ]; | |
4c8a32f5 CL |
912 | if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED) |
913 | priv->rx_diversity_mask = 3; | |
914 | if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED) | |
915 | priv->tx_diversity_mask = 3; | |
916 | ||
917 | if (!is_valid_ether_addr(dev->wiphy->perm_addr)) { | |
918 | u8 perm_addr[ETH_ALEN]; | |
919 | ||
c96c31e4 | 920 | wiphy_warn(dev->wiphy, |
5db55844 | 921 | "Invalid hwaddr! Using randomly generated MAC addr\n"); |
f4f7f414 | 922 | eth_random_addr(perm_addr); |
4c8a32f5 CL |
923 | SET_IEEE80211_PERM_ADDR(dev, perm_addr); |
924 | } | |
925 | ||
7a047f4f CL |
926 | priv->cur_rssi = &p54_rssi_default; |
927 | ||
5db55844 | 928 | wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n", |
c96c31e4 JP |
929 | dev->wiphy->perm_addr, priv->version, |
930 | p54_rf_chips[priv->rxhw]); | |
4c8a32f5 CL |
931 | |
932 | return 0; | |
933 | ||
934 | err: | |
935 | kfree(priv->iq_autocal); | |
936 | kfree(priv->output_limit); | |
937 | kfree(priv->curve_data); | |
7a047f4f | 938 | kfree(priv->rssi_db); |
0d78156e | 939 | kfree(priv->survey); |
4c8a32f5 CL |
940 | priv->iq_autocal = NULL; |
941 | priv->output_limit = NULL; | |
942 | priv->curve_data = NULL; | |
7a047f4f | 943 | priv->rssi_db = NULL; |
0d78156e | 944 | priv->survey = NULL; |
4c8a32f5 | 945 | |
c96c31e4 | 946 | wiphy_err(dev->wiphy, "eeprom parse failed!\n"); |
4c8a32f5 CL |
947 | return err; |
948 | } | |
949 | EXPORT_SYMBOL_GPL(p54_parse_eeprom); | |
950 | ||
951 | int p54_read_eeprom(struct ieee80211_hw *dev) | |
952 | { | |
953 | struct p54_common *priv = dev->priv; | |
954 | size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize; | |
955 | int ret = -ENOMEM; | |
e6a3f551 | 956 | void *eeprom; |
4c8a32f5 CL |
957 | |
958 | maxblocksize = EEPROM_READBACK_LEN; | |
959 | if (priv->fw_var >= 0x509) | |
960 | maxblocksize -= 0xc; | |
961 | else | |
962 | maxblocksize -= 0x4; | |
963 | ||
964 | eeprom = kzalloc(eeprom_size, GFP_KERNEL); | |
965 | if (unlikely(!eeprom)) | |
966 | goto free; | |
967 | ||
968 | while (eeprom_size) { | |
969 | blocksize = min(eeprom_size, maxblocksize); | |
2c208890 | 970 | ret = p54_download_eeprom(priv, eeprom + offset, |
4c8a32f5 CL |
971 | offset, blocksize); |
972 | if (unlikely(ret)) | |
973 | goto free; | |
974 | ||
975 | offset += blocksize; | |
976 | eeprom_size -= blocksize; | |
977 | } | |
978 | ||
979 | ret = p54_parse_eeprom(dev, eeprom, offset); | |
980 | free: | |
981 | kfree(eeprom); | |
982 | return ret; | |
983 | } | |
984 | EXPORT_SYMBOL_GPL(p54_read_eeprom); |