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 | ||
19 | #include <linux/init.h> | |
20 | #include <linux/firmware.h> | |
21 | #include <linux/etherdevice.h> | |
1a9b6679 | 22 | #include <linux/sort.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
4c8a32f5 CL |
24 | |
25 | #include <net/mac80211.h> | |
d7eb50c0 | 26 | #include <linux/crc-ccitt.h> |
4c8a32f5 CL |
27 | |
28 | #include "p54.h" | |
29 | #include "eeprom.h" | |
30 | #include "lmac.h" | |
31 | ||
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; | |
78 | enum ieee80211_band band; | |
4c8a32f5 CL |
79 | }; |
80 | ||
1a9b6679 CL |
81 | struct p54_channel_list { |
82 | struct p54_channel_entry *channels; | |
83 | size_t entries; | |
84 | size_t max_entries; | |
85 | size_t band_channel_num[IEEE80211_NUM_BANDS]; | |
4c8a32f5 CL |
86 | }; |
87 | ||
1a9b6679 CL |
88 | static int p54_get_band_from_freq(u16 freq) |
89 | { | |
90 | /* FIXME: sync these values with the 802.11 spec */ | |
91 | ||
92 | if ((freq >= 2412) && (freq <= 2484)) | |
93 | return IEEE80211_BAND_2GHZ; | |
94 | ||
95 | if ((freq >= 4920) && (freq <= 5825)) | |
96 | return IEEE80211_BAND_5GHZ; | |
97 | ||
98 | return -1; | |
99 | } | |
100 | ||
7a047f4f CL |
101 | static int same_band(u16 freq, u16 freq2) |
102 | { | |
103 | return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq2); | |
104 | } | |
105 | ||
1a9b6679 CL |
106 | static int p54_compare_channels(const void *_a, |
107 | const void *_b) | |
108 | { | |
109 | const struct p54_channel_entry *a = _a; | |
110 | const struct p54_channel_entry *b = _b; | |
111 | ||
192abece | 112 | return a->freq - b->freq; |
1a9b6679 CL |
113 | } |
114 | ||
7a047f4f CL |
115 | static int p54_compare_rssichan(const void *_a, |
116 | const void *_b) | |
117 | { | |
118 | const struct p54_rssi_db_entry *a = _a; | |
119 | const struct p54_rssi_db_entry *b = _b; | |
120 | ||
121 | return a->freq - b->freq; | |
122 | } | |
123 | ||
1a9b6679 CL |
124 | static int p54_fill_band_bitrates(struct ieee80211_hw *dev, |
125 | struct ieee80211_supported_band *band_entry, | |
126 | enum ieee80211_band band) | |
127 | { | |
128 | /* TODO: generate rate array dynamically */ | |
129 | ||
130 | switch (band) { | |
131 | case IEEE80211_BAND_2GHZ: | |
132 | band_entry->bitrates = p54_bgrates; | |
133 | band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); | |
134 | break; | |
135 | case IEEE80211_BAND_5GHZ: | |
136 | band_entry->bitrates = p54_arates; | |
137 | band_entry->n_bitrates = ARRAY_SIZE(p54_arates); | |
138 | break; | |
139 | default: | |
140 | return -EINVAL; | |
141 | } | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static int p54_generate_band(struct ieee80211_hw *dev, | |
147 | struct p54_channel_list *list, | |
0d78156e | 148 | unsigned int *chan_num, |
1a9b6679 CL |
149 | enum ieee80211_band band) |
150 | { | |
151 | struct p54_common *priv = dev->priv; | |
152 | struct ieee80211_supported_band *tmp, *old; | |
153 | unsigned int i, j; | |
154 | int ret = -ENOMEM; | |
155 | ||
156 | if ((!list->entries) || (!list->band_channel_num[band])) | |
93a59d75 | 157 | return -EINVAL; |
1a9b6679 CL |
158 | |
159 | tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); | |
160 | if (!tmp) | |
161 | goto err_out; | |
162 | ||
163 | tmp->channels = kzalloc(sizeof(struct ieee80211_channel) * | |
164 | list->band_channel_num[band], GFP_KERNEL); | |
165 | if (!tmp->channels) | |
166 | goto err_out; | |
167 | ||
168 | ret = p54_fill_band_bitrates(dev, tmp, band); | |
169 | if (ret) | |
170 | goto err_out; | |
171 | ||
172 | for (i = 0, j = 0; (j < list->band_channel_num[band]) && | |
173 | (i < list->entries); i++) { | |
a3162eed | 174 | struct p54_channel_entry *chan = &list->channels[i]; |
1a9b6679 | 175 | |
a3162eed | 176 | if (chan->band != band) |
1a9b6679 CL |
177 | continue; |
178 | ||
a3162eed CL |
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 ? "" : | |
c96c31e4 | 183 | " [iqauto calibration data]"), |
a3162eed | 184 | (chan->data & CHAN_HAS_LIMIT ? "" : |
c96c31e4 | 185 | " [output power limits]"), |
a3162eed | 186 | (chan->data & CHAN_HAS_CURVE ? "" : |
c96c31e4 | 187 | " [curve data]"), |
a3162eed | 188 | chan->index, chan->freq); |
93a59d75 | 189 | continue; |
1a9b6679 CL |
190 | } |
191 | ||
a3162eed CL |
192 | tmp->channels[j].band = chan->band; |
193 | tmp->channels[j].center_freq = chan->freq; | |
0d78156e CL |
194 | priv->survey[*chan_num].channel = &tmp->channels[j]; |
195 | priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM | | |
196 | SURVEY_INFO_CHANNEL_TIME | | |
197 | SURVEY_INFO_CHANNEL_TIME_BUSY | | |
198 | SURVEY_INFO_CHANNEL_TIME_TX; | |
199 | tmp->channels[j].hw_value = (*chan_num); | |
1a9b6679 | 200 | j++; |
0d78156e | 201 | (*chan_num)++; |
1a9b6679 CL |
202 | } |
203 | ||
93a59d75 | 204 | if (j == 0) { |
5db55844 | 205 | wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n", |
c96c31e4 | 206 | (band == IEEE80211_BAND_2GHZ) ? 2 : 5); |
93a59d75 CL |
207 | |
208 | ret = -ENODATA; | |
209 | goto err_out; | |
210 | } | |
211 | ||
212 | tmp->n_channels = j; | |
1a9b6679 CL |
213 | old = priv->band_table[band]; |
214 | priv->band_table[band] = tmp; | |
215 | if (old) { | |
216 | kfree(old->channels); | |
217 | kfree(old); | |
218 | } | |
219 | ||
220 | return 0; | |
221 | ||
222 | err_out: | |
223 | if (tmp) { | |
224 | kfree(tmp->channels); | |
225 | kfree(tmp); | |
226 | } | |
227 | ||
228 | return ret; | |
229 | } | |
230 | ||
231 | static void p54_update_channel_param(struct p54_channel_list *list, | |
232 | u16 freq, u16 data) | |
233 | { | |
234 | int band, i; | |
235 | ||
236 | /* | |
237 | * usually all lists in the eeprom are mostly sorted. | |
238 | * so it's very likely that the entry we are looking for | |
239 | * is right at the end of the list | |
240 | */ | |
241 | for (i = list->entries; i >= 0; i--) { | |
242 | if (freq == list->channels[i].freq) { | |
243 | list->channels[i].data |= data; | |
244 | break; | |
245 | } | |
246 | } | |
247 | ||
248 | if ((i < 0) && (list->entries < list->max_entries)) { | |
249 | /* entry does not exist yet. Initialize a new one. */ | |
250 | band = p54_get_band_from_freq(freq); | |
251 | ||
252 | /* | |
253 | * filter out frequencies which don't belong into | |
254 | * any supported band. | |
255 | */ | |
256 | if (band < 0) | |
257 | return ; | |
258 | ||
259 | i = list->entries++; | |
260 | list->band_channel_num[band]++; | |
261 | ||
262 | list->channels[i].freq = freq; | |
263 | list->channels[i].data = data; | |
264 | list->channels[i].band = band; | |
265 | list->channels[i].index = ieee80211_frequency_to_channel(freq); | |
266 | /* TODO: parse output_limit and fill max_power */ | |
267 | } | |
268 | } | |
269 | ||
270 | static int p54_generate_channel_lists(struct ieee80211_hw *dev) | |
271 | { | |
272 | struct p54_common *priv = dev->priv; | |
273 | struct p54_channel_list *list; | |
0d78156e | 274 | unsigned int i, j, k, max_channel_num; |
93a59d75 | 275 | int ret = 0; |
1a9b6679 CL |
276 | u16 freq; |
277 | ||
278 | if ((priv->iq_autocal_len != priv->curve_data->entries) || | |
279 | (priv->iq_autocal_len != priv->output_limit->entries)) | |
c96c31e4 JP |
280 | wiphy_err(dev->wiphy, |
281 | "Unsupported or damaged EEPROM detected. " | |
282 | "You may not be able to use all channels.\n"); | |
1a9b6679 CL |
283 | |
284 | max_channel_num = max_t(unsigned int, priv->output_limit->entries, | |
285 | priv->iq_autocal_len); | |
286 | max_channel_num = max_t(unsigned int, max_channel_num, | |
287 | priv->curve_data->entries); | |
288 | ||
289 | list = kzalloc(sizeof(*list), GFP_KERNEL); | |
93a59d75 CL |
290 | if (!list) { |
291 | ret = -ENOMEM; | |
1a9b6679 | 292 | goto free; |
93a59d75 | 293 | } |
0d78156e CL |
294 | priv->chan_num = max_channel_num; |
295 | priv->survey = kzalloc(sizeof(struct survey_info) * max_channel_num, | |
296 | GFP_KERNEL); | |
297 | if (!priv->survey) { | |
298 | ret = -ENOMEM; | |
299 | goto free; | |
300 | } | |
1a9b6679 CL |
301 | |
302 | list->max_entries = max_channel_num; | |
303 | list->channels = kzalloc(sizeof(struct p54_channel_entry) * | |
304 | max_channel_num, GFP_KERNEL); | |
0d91f22b JL |
305 | if (!list->channels) { |
306 | ret = -ENOMEM; | |
1a9b6679 | 307 | goto free; |
0d91f22b | 308 | } |
1a9b6679 CL |
309 | |
310 | for (i = 0; i < max_channel_num; i++) { | |
311 | if (i < priv->iq_autocal_len) { | |
312 | freq = le16_to_cpu(priv->iq_autocal[i].freq); | |
313 | p54_update_channel_param(list, freq, CHAN_HAS_CAL); | |
314 | } | |
315 | ||
316 | if (i < priv->output_limit->entries) { | |
317 | freq = le16_to_cpup((__le16 *) (i * | |
318 | priv->output_limit->entry_size + | |
319 | priv->output_limit->offset + | |
320 | priv->output_limit->data)); | |
321 | ||
322 | p54_update_channel_param(list, freq, CHAN_HAS_LIMIT); | |
323 | } | |
324 | ||
325 | if (i < priv->curve_data->entries) { | |
326 | freq = le16_to_cpup((__le16 *) (i * | |
327 | priv->curve_data->entry_size + | |
328 | priv->curve_data->offset + | |
329 | priv->curve_data->data)); | |
330 | ||
331 | p54_update_channel_param(list, freq, CHAN_HAS_CURVE); | |
332 | } | |
333 | } | |
334 | ||
192abece | 335 | /* sort the channel list by frequency */ |
1a9b6679 CL |
336 | sort(list->channels, list->entries, sizeof(struct p54_channel_entry), |
337 | p54_compare_channels, NULL); | |
338 | ||
0d78156e | 339 | k = 0; |
1a9b6679 | 340 | for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) { |
0d78156e | 341 | if (p54_generate_band(dev, list, &k, i) == 0) |
1a9b6679 | 342 | j++; |
1a9b6679 CL |
343 | } |
344 | if (j == 0) { | |
345 | /* no useable band available. */ | |
346 | ret = -EINVAL; | |
347 | } | |
348 | ||
349 | free: | |
350 | if (list) { | |
351 | kfree(list->channels); | |
352 | kfree(list); | |
353 | } | |
0d78156e CL |
354 | if (ret) { |
355 | kfree(priv->survey); | |
356 | priv->survey = NULL; | |
357 | } | |
1a9b6679 CL |
358 | |
359 | return ret; | |
360 | } | |
361 | ||
4c8a32f5 CL |
362 | static int p54_convert_rev0(struct ieee80211_hw *dev, |
363 | struct pda_pa_curve_data *curve_data) | |
364 | { | |
365 | struct p54_common *priv = dev->priv; | |
366 | struct p54_pa_curve_data_sample *dst; | |
367 | struct pda_pa_curve_data_sample_rev0 *src; | |
368 | size_t cd_len = sizeof(*curve_data) + | |
369 | (curve_data->points_per_channel*sizeof(*dst) + 2) * | |
370 | curve_data->channels; | |
371 | unsigned int i, j; | |
372 | void *source, *target; | |
373 | ||
374 | priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len, | |
375 | GFP_KERNEL); | |
376 | if (!priv->curve_data) | |
377 | return -ENOMEM; | |
378 | ||
379 | priv->curve_data->entries = curve_data->channels; | |
380 | priv->curve_data->entry_size = sizeof(__le16) + | |
381 | sizeof(*dst) * curve_data->points_per_channel; | |
382 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); | |
383 | priv->curve_data->len = cd_len; | |
384 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); | |
385 | source = curve_data->data; | |
386 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; | |
387 | for (i = 0; i < curve_data->channels; i++) { | |
388 | __le16 *freq = source; | |
389 | source += sizeof(__le16); | |
390 | *((__le16 *)target) = *freq; | |
391 | target += sizeof(__le16); | |
392 | for (j = 0; j < curve_data->points_per_channel; j++) { | |
393 | dst = target; | |
394 | src = source; | |
395 | ||
396 | dst->rf_power = src->rf_power; | |
397 | dst->pa_detector = src->pa_detector; | |
398 | dst->data_64qam = src->pcv; | |
399 | /* "invent" the points for the other modulations */ | |
400 | #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y)) | |
401 | dst->data_16qam = SUB(src->pcv, 12); | |
402 | dst->data_qpsk = SUB(dst->data_16qam, 12); | |
403 | dst->data_bpsk = SUB(dst->data_qpsk, 12); | |
404 | dst->data_barker = SUB(dst->data_bpsk, 14); | |
405 | #undef SUB | |
406 | target += sizeof(*dst); | |
407 | source += sizeof(*src); | |
408 | } | |
409 | } | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | static int p54_convert_rev1(struct ieee80211_hw *dev, | |
415 | struct pda_pa_curve_data *curve_data) | |
416 | { | |
417 | struct p54_common *priv = dev->priv; | |
418 | struct p54_pa_curve_data_sample *dst; | |
419 | struct pda_pa_curve_data_sample_rev1 *src; | |
420 | size_t cd_len = sizeof(*curve_data) + | |
421 | (curve_data->points_per_channel*sizeof(*dst) + 2) * | |
422 | curve_data->channels; | |
423 | unsigned int i, j; | |
424 | void *source, *target; | |
425 | ||
426 | priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data), | |
427 | GFP_KERNEL); | |
428 | if (!priv->curve_data) | |
429 | return -ENOMEM; | |
430 | ||
431 | priv->curve_data->entries = curve_data->channels; | |
432 | priv->curve_data->entry_size = sizeof(__le16) + | |
433 | sizeof(*dst) * curve_data->points_per_channel; | |
434 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); | |
435 | priv->curve_data->len = cd_len; | |
436 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); | |
437 | source = curve_data->data; | |
438 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; | |
439 | for (i = 0; i < curve_data->channels; i++) { | |
440 | __le16 *freq = source; | |
441 | source += sizeof(__le16); | |
442 | *((__le16 *)target) = *freq; | |
443 | target += sizeof(__le16); | |
444 | for (j = 0; j < curve_data->points_per_channel; j++) { | |
445 | memcpy(target, source, sizeof(*src)); | |
446 | ||
447 | target += sizeof(*dst); | |
448 | source += sizeof(*src); | |
449 | } | |
450 | source++; | |
451 | } | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2", | |
457 | "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" }; | |
458 | ||
7a047f4f CL |
459 | static int p54_parse_rssical(struct ieee80211_hw *dev, |
460 | u8 *data, int len, u16 type) | |
4c8a32f5 CL |
461 | { |
462 | struct p54_common *priv = dev->priv; | |
7a047f4f CL |
463 | struct p54_rssi_db_entry *entry; |
464 | size_t db_len, entries; | |
465 | int offset = 0, i; | |
466 | ||
467 | if (type != PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { | |
468 | entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2; | |
469 | if (len != sizeof(struct pda_rssi_cal_entry) * entries) { | |
470 | wiphy_err(dev->wiphy, "rssical size mismatch.\n"); | |
471 | goto err_data; | |
472 | } | |
473 | } else { | |
474 | /* | |
475 | * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...) | |
476 | * have an empty two byte header. | |
477 | */ | |
478 | if (*((__le16 *)&data[offset]) == cpu_to_le16(0)) | |
479 | offset += 2; | |
4c8a32f5 | 480 | |
7a047f4f CL |
481 | entries = (len - offset) / |
482 | sizeof(struct pda_rssi_cal_ext_entry); | |
4c8a32f5 | 483 | |
7a047f4f CL |
484 | if ((len - offset) % sizeof(struct pda_rssi_cal_ext_entry) || |
485 | entries <= 0) { | |
486 | wiphy_err(dev->wiphy, "invalid rssi database.\n"); | |
487 | goto err_data; | |
488 | } | |
489 | } | |
4c8a32f5 | 490 | |
7a047f4f CL |
491 | db_len = sizeof(*entry) * entries; |
492 | priv->rssi_db = kzalloc(db_len + sizeof(*priv->rssi_db), GFP_KERNEL); | |
493 | if (!priv->rssi_db) | |
494 | return -ENOMEM; | |
495 | ||
496 | priv->rssi_db->offset = 0; | |
497 | priv->rssi_db->entries = entries; | |
498 | priv->rssi_db->entry_size = sizeof(*entry); | |
499 | priv->rssi_db->len = db_len; | |
500 | ||
501 | entry = (void *)((unsigned long)priv->rssi_db->data + priv->rssi_db->offset); | |
502 | if (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { | |
503 | struct pda_rssi_cal_ext_entry *cal = (void *) &data[offset]; | |
504 | ||
505 | for (i = 0; i < entries; i++) { | |
506 | entry[i].freq = le16_to_cpu(cal[i].freq); | |
507 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); | |
508 | entry[i].add = (s16) le16_to_cpu(cal[i].add); | |
509 | } | |
510 | } else { | |
511 | struct pda_rssi_cal_entry *cal = (void *) &data[offset]; | |
512 | ||
513 | for (i = 0; i < entries; i++) { | |
ce6cac88 | 514 | u16 freq = 0; |
7a047f4f CL |
515 | switch (i) { |
516 | case IEEE80211_BAND_2GHZ: | |
517 | freq = 2437; | |
518 | break; | |
519 | case IEEE80211_BAND_5GHZ: | |
520 | freq = 5240; | |
521 | break; | |
522 | } | |
523 | ||
524 | entry[i].freq = freq; | |
525 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); | |
526 | entry[i].add = (s16) le16_to_cpu(cal[i].add); | |
527 | } | |
4c8a32f5 CL |
528 | } |
529 | ||
7a047f4f CL |
530 | /* sort the list by channel frequency */ |
531 | sort(entry, entries, sizeof(*entry), p54_compare_rssichan, NULL); | |
532 | return 0; | |
533 | ||
534 | err_data: | |
535 | wiphy_err(dev->wiphy, | |
536 | "rssi calibration data packing type:(%x) len:%d.\n", | |
537 | type, len); | |
538 | ||
539 | print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, data, len); | |
540 | ||
541 | wiphy_err(dev->wiphy, "please report this issue.\n"); | |
542 | return -EINVAL; | |
543 | } | |
544 | ||
545 | struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *priv, const u16 freq) | |
546 | { | |
a5a7103f | 547 | struct p54_rssi_db_entry *entry; |
7a047f4f CL |
548 | int i, found = -1; |
549 | ||
a5a7103f FF |
550 | if (!priv->rssi_db) |
551 | return &p54_rssi_default; | |
552 | ||
553 | entry = (void *)(priv->rssi_db->data + priv->rssi_db->offset); | |
7a047f4f CL |
554 | for (i = 0; i < priv->rssi_db->entries; i++) { |
555 | if (!same_band(freq, entry[i].freq)) | |
556 | continue; | |
557 | ||
558 | if (found == -1) { | |
559 | found = i; | |
560 | continue; | |
561 | } | |
562 | ||
563 | /* nearest match */ | |
564 | if (abs(freq - entry[i].freq) < | |
565 | abs(freq - entry[found].freq)) { | |
566 | found = i; | |
567 | continue; | |
568 | } else { | |
569 | break; | |
570 | } | |
4c8a32f5 | 571 | } |
7a047f4f CL |
572 | |
573 | return found < 0 ? &p54_rssi_default : &entry[found]; | |
4c8a32f5 CL |
574 | } |
575 | ||
576 | static void p54_parse_default_country(struct ieee80211_hw *dev, | |
577 | void *data, int len) | |
578 | { | |
579 | struct pda_country *country; | |
580 | ||
581 | if (len != sizeof(*country)) { | |
c96c31e4 JP |
582 | wiphy_err(dev->wiphy, |
583 | "found possible invalid default country eeprom entry. (entry size: %d)\n", | |
584 | len); | |
4c8a32f5 CL |
585 | |
586 | print_hex_dump_bytes("country:", DUMP_PREFIX_NONE, | |
587 | data, len); | |
588 | ||
c96c31e4 | 589 | wiphy_err(dev->wiphy, "please report this issue.\n"); |
4c8a32f5 CL |
590 | return; |
591 | } | |
592 | ||
593 | country = (struct pda_country *) data; | |
594 | if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO) | |
595 | regulatory_hint(dev->wiphy, country->alpha2); | |
596 | else { | |
597 | /* TODO: | |
598 | * write a shared/common function that converts | |
599 | * "Regulatory domain codes" (802.11-2007 14.8.2.2) | |
600 | * into ISO/IEC 3166-1 alpha2 for regulatory_hint. | |
601 | */ | |
602 | } | |
603 | } | |
604 | ||
605 | static int p54_convert_output_limits(struct ieee80211_hw *dev, | |
606 | u8 *data, size_t len) | |
607 | { | |
608 | struct p54_common *priv = dev->priv; | |
609 | ||
610 | if (len < 2) | |
611 | return -EINVAL; | |
612 | ||
613 | if (data[0] != 0) { | |
c96c31e4 JP |
614 | wiphy_err(dev->wiphy, "unknown output power db revision:%x\n", |
615 | data[0]); | |
4c8a32f5 CL |
616 | return -EINVAL; |
617 | } | |
618 | ||
619 | if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len) | |
620 | return -EINVAL; | |
621 | ||
622 | priv->output_limit = kmalloc(data[1] * | |
623 | sizeof(struct pda_channel_output_limit) + | |
624 | sizeof(*priv->output_limit), GFP_KERNEL); | |
625 | ||
626 | if (!priv->output_limit) | |
627 | return -ENOMEM; | |
628 | ||
629 | priv->output_limit->offset = 0; | |
630 | priv->output_limit->entries = data[1]; | |
631 | priv->output_limit->entry_size = | |
632 | sizeof(struct pda_channel_output_limit); | |
633 | priv->output_limit->len = priv->output_limit->entry_size * | |
634 | priv->output_limit->entries + | |
635 | priv->output_limit->offset; | |
636 | ||
637 | memcpy(priv->output_limit->data, &data[2], | |
638 | data[1] * sizeof(struct pda_channel_output_limit)); | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src, | |
644 | size_t total_len) | |
645 | { | |
646 | struct p54_cal_database *dst; | |
647 | size_t payload_len, entries, entry_size, offset; | |
648 | ||
649 | payload_len = le16_to_cpu(src->len); | |
650 | entries = le16_to_cpu(src->entries); | |
651 | entry_size = le16_to_cpu(src->entry_size); | |
652 | offset = le16_to_cpu(src->offset); | |
653 | if (((entries * entry_size + offset) != payload_len) || | |
654 | (payload_len + sizeof(*src) != total_len)) | |
655 | return NULL; | |
656 | ||
657 | dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL); | |
658 | if (!dst) | |
659 | return NULL; | |
660 | ||
661 | dst->entries = entries; | |
662 | dst->entry_size = entry_size; | |
663 | dst->offset = offset; | |
664 | dst->len = payload_len; | |
665 | ||
666 | memcpy(dst->data, src->data, payload_len); | |
667 | return dst; | |
668 | } | |
669 | ||
670 | int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) | |
671 | { | |
672 | struct p54_common *priv = dev->priv; | |
e6a3f551 | 673 | struct eeprom_pda_wrap *wrap; |
4c8a32f5 CL |
674 | struct pda_entry *entry; |
675 | unsigned int data_len, entry_len; | |
676 | void *tmp; | |
677 | int err; | |
678 | u8 *end = (u8 *)eeprom + len; | |
679 | u16 synth = 0; | |
d7eb50c0 | 680 | u16 crc16 = ~0; |
4c8a32f5 CL |
681 | |
682 | wrap = (struct eeprom_pda_wrap *) eeprom; | |
683 | entry = (void *)wrap->data + le16_to_cpu(wrap->len); | |
684 | ||
685 | /* verify that at least the entry length/code fits */ | |
686 | while ((u8 *)entry <= end - sizeof(*entry)) { | |
687 | entry_len = le16_to_cpu(entry->len); | |
688 | data_len = ((entry_len - 1) << 1); | |
689 | ||
690 | /* abort if entry exceeds whole structure */ | |
691 | if ((u8 *)entry + sizeof(*entry) + data_len > end) | |
692 | break; | |
693 | ||
694 | switch (le16_to_cpu(entry->code)) { | |
695 | case PDR_MAC_ADDRESS: | |
696 | if (data_len != ETH_ALEN) | |
697 | break; | |
698 | SET_IEEE80211_PERM_ADDR(dev, entry->data); | |
699 | break; | |
700 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS: | |
701 | if (priv->output_limit) | |
702 | break; | |
703 | err = p54_convert_output_limits(dev, entry->data, | |
704 | data_len); | |
705 | if (err) | |
706 | goto err; | |
707 | break; | |
708 | case PDR_PRISM_PA_CAL_CURVE_DATA: { | |
709 | struct pda_pa_curve_data *curve_data = | |
710 | (struct pda_pa_curve_data *)entry->data; | |
711 | if (data_len < sizeof(*curve_data)) { | |
712 | err = -EINVAL; | |
713 | goto err; | |
714 | } | |
715 | ||
716 | switch (curve_data->cal_method_rev) { | |
717 | case 0: | |
718 | err = p54_convert_rev0(dev, curve_data); | |
719 | break; | |
720 | case 1: | |
721 | err = p54_convert_rev1(dev, curve_data); | |
722 | break; | |
723 | default: | |
c96c31e4 JP |
724 | wiphy_err(dev->wiphy, |
725 | "unknown curve data revision %d\n", | |
726 | curve_data->cal_method_rev); | |
4c8a32f5 CL |
727 | err = -ENODEV; |
728 | break; | |
729 | } | |
730 | if (err) | |
731 | goto err; | |
732 | } | |
733 | break; | |
734 | case PDR_PRISM_ZIF_TX_IQ_CALIBRATION: | |
27b81bbe JL |
735 | priv->iq_autocal = kmemdup(entry->data, data_len, |
736 | GFP_KERNEL); | |
4c8a32f5 CL |
737 | if (!priv->iq_autocal) { |
738 | err = -ENOMEM; | |
739 | goto err; | |
740 | } | |
741 | ||
4c8a32f5 CL |
742 | priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry); |
743 | break; | |
744 | case PDR_DEFAULT_COUNTRY: | |
745 | p54_parse_default_country(dev, entry->data, data_len); | |
746 | break; | |
747 | case PDR_INTERFACE_LIST: | |
748 | tmp = entry->data; | |
749 | while ((u8 *)tmp < entry->data + data_len) { | |
750 | struct exp_if *exp_if = tmp; | |
751 | if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000)) | |
752 | synth = le16_to_cpu(exp_if->variant); | |
753 | tmp += sizeof(*exp_if); | |
754 | } | |
755 | break; | |
756 | case PDR_HARDWARE_PLATFORM_COMPONENT_ID: | |
757 | if (data_len < 2) | |
758 | break; | |
759 | priv->version = *(u8 *)(entry->data + 1); | |
760 | break; | |
761 | case PDR_RSSI_LINEAR_APPROXIMATION: | |
762 | case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND: | |
763 | case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED: | |
7a047f4f CL |
764 | err = p54_parse_rssical(dev, entry->data, data_len, |
765 | le16_to_cpu(entry->code)); | |
766 | if (err) | |
767 | goto err; | |
4c8a32f5 | 768 | break; |
7a047f4f CL |
769 | case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: { |
770 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
771 | __le16 *src; | |
772 | u16 *dst; | |
4c8a32f5 CL |
773 | int i; |
774 | ||
7a047f4f CL |
775 | if (priv->rssi_db || data_len < sizeof(*pda)) |
776 | break; | |
777 | ||
778 | priv->rssi_db = p54_convert_db(pda, data_len); | |
779 | if (!priv->rssi_db) | |
780 | break; | |
781 | ||
782 | src = (void *) priv->rssi_db->data; | |
783 | dst = (void *) priv->rssi_db->data; | |
784 | ||
785 | for (i = 0; i < priv->rssi_db->entries; i++) | |
4c8a32f5 | 786 | *(dst++) = (s16) le16_to_cpu(*(src++)); |
7a047f4f | 787 | |
4c8a32f5 CL |
788 | } |
789 | break; | |
790 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: { | |
791 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
792 | if (priv->output_limit || data_len < sizeof(*pda)) | |
793 | break; | |
794 | priv->output_limit = p54_convert_db(pda, data_len); | |
795 | } | |
796 | break; | |
797 | case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: { | |
798 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
799 | if (priv->curve_data || data_len < sizeof(*pda)) | |
800 | break; | |
801 | priv->curve_data = p54_convert_db(pda, data_len); | |
802 | } | |
803 | break; | |
804 | case PDR_END: | |
d7eb50c0 CL |
805 | crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry)); |
806 | if (crc16 != le16_to_cpup((__le16 *)entry->data)) { | |
807 | wiphy_err(dev->wiphy, "eeprom failed checksum " | |
808 | "test!\n"); | |
809 | err = -ENOMSG; | |
810 | goto err; | |
811 | } else { | |
812 | goto good_eeprom; | |
813 | } | |
4c8a32f5 CL |
814 | break; |
815 | default: | |
816 | break; | |
817 | } | |
818 | ||
d7eb50c0 CL |
819 | crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2); |
820 | entry = (void *)entry + (entry_len + 1) * 2; | |
4c8a32f5 CL |
821 | } |
822 | ||
d7eb50c0 CL |
823 | wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n"); |
824 | err = -ENODATA; | |
825 | goto err; | |
826 | ||
827 | good_eeprom: | |
4c8a32f5 CL |
828 | if (!synth || !priv->iq_autocal || !priv->output_limit || |
829 | !priv->curve_data) { | |
c96c31e4 JP |
830 | wiphy_err(dev->wiphy, |
831 | "not all required entries found in eeprom!\n"); | |
4c8a32f5 CL |
832 | err = -EINVAL; |
833 | goto err; | |
834 | } | |
835 | ||
1a9b6679 CL |
836 | err = p54_generate_channel_lists(dev); |
837 | if (err) | |
838 | goto err; | |
839 | ||
4c8a32f5 CL |
840 | priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; |
841 | if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW) | |
842 | p54_init_xbow_synth(priv); | |
843 | if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) | |
1a9b6679 CL |
844 | dev->wiphy->bands[IEEE80211_BAND_2GHZ] = |
845 | priv->band_table[IEEE80211_BAND_2GHZ]; | |
4c8a32f5 | 846 | if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) |
1a9b6679 CL |
847 | dev->wiphy->bands[IEEE80211_BAND_5GHZ] = |
848 | priv->band_table[IEEE80211_BAND_5GHZ]; | |
4c8a32f5 CL |
849 | if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED) |
850 | priv->rx_diversity_mask = 3; | |
851 | if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED) | |
852 | priv->tx_diversity_mask = 3; | |
853 | ||
854 | if (!is_valid_ether_addr(dev->wiphy->perm_addr)) { | |
855 | u8 perm_addr[ETH_ALEN]; | |
856 | ||
c96c31e4 | 857 | wiphy_warn(dev->wiphy, |
5db55844 | 858 | "Invalid hwaddr! Using randomly generated MAC addr\n"); |
4c8a32f5 CL |
859 | random_ether_addr(perm_addr); |
860 | SET_IEEE80211_PERM_ADDR(dev, perm_addr); | |
861 | } | |
862 | ||
7a047f4f CL |
863 | priv->cur_rssi = &p54_rssi_default; |
864 | ||
5db55844 | 865 | wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n", |
c96c31e4 JP |
866 | dev->wiphy->perm_addr, priv->version, |
867 | p54_rf_chips[priv->rxhw]); | |
4c8a32f5 CL |
868 | |
869 | return 0; | |
870 | ||
871 | err: | |
872 | kfree(priv->iq_autocal); | |
873 | kfree(priv->output_limit); | |
874 | kfree(priv->curve_data); | |
7a047f4f | 875 | kfree(priv->rssi_db); |
0d78156e | 876 | kfree(priv->survey); |
4c8a32f5 CL |
877 | priv->iq_autocal = NULL; |
878 | priv->output_limit = NULL; | |
879 | priv->curve_data = NULL; | |
7a047f4f | 880 | priv->rssi_db = NULL; |
0d78156e | 881 | priv->survey = NULL; |
4c8a32f5 | 882 | |
c96c31e4 | 883 | wiphy_err(dev->wiphy, "eeprom parse failed!\n"); |
4c8a32f5 CL |
884 | return err; |
885 | } | |
886 | EXPORT_SYMBOL_GPL(p54_parse_eeprom); | |
887 | ||
888 | int p54_read_eeprom(struct ieee80211_hw *dev) | |
889 | { | |
890 | struct p54_common *priv = dev->priv; | |
891 | size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize; | |
892 | int ret = -ENOMEM; | |
e6a3f551 | 893 | void *eeprom; |
4c8a32f5 CL |
894 | |
895 | maxblocksize = EEPROM_READBACK_LEN; | |
896 | if (priv->fw_var >= 0x509) | |
897 | maxblocksize -= 0xc; | |
898 | else | |
899 | maxblocksize -= 0x4; | |
900 | ||
901 | eeprom = kzalloc(eeprom_size, GFP_KERNEL); | |
902 | if (unlikely(!eeprom)) | |
903 | goto free; | |
904 | ||
905 | while (eeprom_size) { | |
906 | blocksize = min(eeprom_size, maxblocksize); | |
907 | ret = p54_download_eeprom(priv, (void *) (eeprom + offset), | |
908 | offset, blocksize); | |
909 | if (unlikely(ret)) | |
910 | goto free; | |
911 | ||
912 | offset += blocksize; | |
913 | eeprom_size -= blocksize; | |
914 | } | |
915 | ||
916 | ret = p54_parse_eeprom(dev, eeprom, offset); | |
917 | free: | |
918 | kfree(eeprom); | |
919 | return ret; | |
920 | } | |
921 | EXPORT_SYMBOL_GPL(p54_read_eeprom); |