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