]>
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 | ||
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> |
ee40fa06 | 27 | #include <linux/export.h> |
4c8a32f5 CL |
28 | |
29 | #include "p54.h" | |
30 | #include "eeprom.h" | |
31 | #include "lmac.h" | |
32 | ||
33 | static struct ieee80211_rate p54_bgrates[] = { | |
34 | { .bitrate = 10, .hw_value = 0, }, | |
35 | { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
36 | { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
37 | { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
38 | { .bitrate = 60, .hw_value = 4, }, | |
39 | { .bitrate = 90, .hw_value = 5, }, | |
40 | { .bitrate = 120, .hw_value = 6, }, | |
41 | { .bitrate = 180, .hw_value = 7, }, | |
42 | { .bitrate = 240, .hw_value = 8, }, | |
43 | { .bitrate = 360, .hw_value = 9, }, | |
44 | { .bitrate = 480, .hw_value = 10, }, | |
45 | { .bitrate = 540, .hw_value = 11, }, | |
46 | }; | |
47 | ||
4c8a32f5 CL |
48 | static struct ieee80211_rate p54_arates[] = { |
49 | { .bitrate = 60, .hw_value = 4, }, | |
50 | { .bitrate = 90, .hw_value = 5, }, | |
51 | { .bitrate = 120, .hw_value = 6, }, | |
52 | { .bitrate = 180, .hw_value = 7, }, | |
53 | { .bitrate = 240, .hw_value = 8, }, | |
54 | { .bitrate = 360, .hw_value = 9, }, | |
55 | { .bitrate = 480, .hw_value = 10, }, | |
56 | { .bitrate = 540, .hw_value = 11, }, | |
57 | }; | |
58 | ||
7a047f4f CL |
59 | static struct p54_rssi_db_entry p54_rssi_default = { |
60 | /* | |
61 | * The defaults are taken from usb-logs of the | |
62 | * vendor driver. So, they should be safe to | |
63 | * use in case we can't get a match from the | |
64 | * rssi <-> dBm conversion database. | |
65 | */ | |
66 | .mul = 130, | |
67 | .add = -398, | |
68 | }; | |
69 | ||
1a9b6679 CL |
70 | #define CHAN_HAS_CAL BIT(0) |
71 | #define CHAN_HAS_LIMIT BIT(1) | |
72 | #define CHAN_HAS_CURVE BIT(2) | |
73 | #define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE) | |
74 | ||
75 | struct p54_channel_entry { | |
76 | u16 freq; | |
77 | u16 data; | |
78 | int index; | |
79 | enum ieee80211_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; | |
86 | size_t band_channel_num[IEEE80211_NUM_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)) | |
94 | return IEEE80211_BAND_2GHZ; | |
95 | ||
96 | if ((freq >= 4920) && (freq <= 5825)) | |
97 | return IEEE80211_BAND_5GHZ; | |
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, | |
127 | enum ieee80211_band band) | |
128 | { | |
129 | /* TODO: generate rate array dynamically */ | |
130 | ||
131 | switch (band) { | |
132 | case IEEE80211_BAND_2GHZ: | |
133 | band_entry->bitrates = p54_bgrates; | |
134 | band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); | |
135 | break; | |
136 | case IEEE80211_BAND_5GHZ: | |
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, |
1a9b6679 CL |
150 | enum ieee80211_band band) |
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]; |
1a9b6679 | 176 | |
a3162eed | 177 | if (chan->band != band) |
1a9b6679 CL |
178 | continue; |
179 | ||
a3162eed CL |
180 | if (chan->data != CHAN_HAS_ALL) { |
181 | wiphy_err(dev->wiphy, "%s%s%s is/are missing for " | |
182 | "channel:%d [%d MHz].\n", | |
183 | (chan->data & CHAN_HAS_CAL ? "" : | |
c96c31e4 | 184 | " [iqauto calibration data]"), |
a3162eed | 185 | (chan->data & CHAN_HAS_LIMIT ? "" : |
c96c31e4 | 186 | " [output power limits]"), |
a3162eed | 187 | (chan->data & CHAN_HAS_CURVE ? "" : |
c96c31e4 | 188 | " [curve data]"), |
a3162eed | 189 | chan->index, chan->freq); |
93a59d75 | 190 | continue; |
1a9b6679 CL |
191 | } |
192 | ||
a3162eed CL |
193 | tmp->channels[j].band = chan->band; |
194 | tmp->channels[j].center_freq = chan->freq; | |
0d78156e CL |
195 | priv->survey[*chan_num].channel = &tmp->channels[j]; |
196 | priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM | | |
197 | SURVEY_INFO_CHANNEL_TIME | | |
198 | SURVEY_INFO_CHANNEL_TIME_BUSY | | |
199 | SURVEY_INFO_CHANNEL_TIME_TX; | |
200 | tmp->channels[j].hw_value = (*chan_num); | |
1a9b6679 | 201 | j++; |
0d78156e | 202 | (*chan_num)++; |
1a9b6679 CL |
203 | } |
204 | ||
93a59d75 | 205 | if (j == 0) { |
5db55844 | 206 | wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n", |
c96c31e4 | 207 | (band == IEEE80211_BAND_2GHZ) ? 2 : 5); |
93a59d75 CL |
208 | |
209 | ret = -ENODATA; | |
210 | goto err_out; | |
211 | } | |
212 | ||
213 | tmp->n_channels = j; | |
1a9b6679 CL |
214 | old = priv->band_table[band]; |
215 | priv->band_table[band] = tmp; | |
216 | if (old) { | |
217 | kfree(old->channels); | |
218 | kfree(old); | |
219 | } | |
220 | ||
221 | return 0; | |
222 | ||
223 | err_out: | |
224 | if (tmp) { | |
225 | kfree(tmp->channels); | |
226 | kfree(tmp); | |
227 | } | |
228 | ||
229 | return ret; | |
230 | } | |
231 | ||
232 | static void p54_update_channel_param(struct p54_channel_list *list, | |
233 | u16 freq, u16 data) | |
234 | { | |
235 | int band, i; | |
236 | ||
237 | /* | |
238 | * usually all lists in the eeprom are mostly sorted. | |
239 | * so it's very likely that the entry we are looking for | |
240 | * is right at the end of the list | |
241 | */ | |
242 | for (i = list->entries; i >= 0; i--) { | |
243 | if (freq == list->channels[i].freq) { | |
244 | list->channels[i].data |= data; | |
245 | break; | |
246 | } | |
247 | } | |
248 | ||
249 | if ((i < 0) && (list->entries < list->max_entries)) { | |
250 | /* entry does not exist yet. Initialize a new one. */ | |
251 | band = p54_get_band_from_freq(freq); | |
252 | ||
253 | /* | |
254 | * filter out frequencies which don't belong into | |
255 | * any supported band. | |
256 | */ | |
257 | if (band < 0) | |
258 | return ; | |
259 | ||
260 | i = list->entries++; | |
261 | list->band_channel_num[band]++; | |
262 | ||
263 | list->channels[i].freq = freq; | |
264 | list->channels[i].data = data; | |
265 | list->channels[i].band = band; | |
266 | list->channels[i].index = ieee80211_frequency_to_channel(freq); | |
267 | /* TODO: parse output_limit and fill max_power */ | |
268 | } | |
269 | } | |
270 | ||
271 | static int p54_generate_channel_lists(struct ieee80211_hw *dev) | |
272 | { | |
273 | struct p54_common *priv = dev->priv; | |
274 | struct p54_channel_list *list; | |
0d78156e | 275 | unsigned int i, j, k, max_channel_num; |
93a59d75 | 276 | int ret = 0; |
1a9b6679 CL |
277 | u16 freq; |
278 | ||
279 | if ((priv->iq_autocal_len != priv->curve_data->entries) || | |
280 | (priv->iq_autocal_len != priv->output_limit->entries)) | |
c96c31e4 JP |
281 | wiphy_err(dev->wiphy, |
282 | "Unsupported or damaged EEPROM detected. " | |
283 | "You may not be able to use all channels.\n"); | |
1a9b6679 CL |
284 | |
285 | max_channel_num = max_t(unsigned int, priv->output_limit->entries, | |
286 | priv->iq_autocal_len); | |
287 | max_channel_num = max_t(unsigned int, max_channel_num, | |
288 | priv->curve_data->entries); | |
289 | ||
290 | list = kzalloc(sizeof(*list), GFP_KERNEL); | |
93a59d75 CL |
291 | if (!list) { |
292 | ret = -ENOMEM; | |
1a9b6679 | 293 | goto free; |
93a59d75 | 294 | } |
0d78156e CL |
295 | priv->chan_num = max_channel_num; |
296 | priv->survey = kzalloc(sizeof(struct survey_info) * max_channel_num, | |
297 | GFP_KERNEL); | |
298 | if (!priv->survey) { | |
299 | ret = -ENOMEM; | |
300 | goto free; | |
301 | } | |
1a9b6679 CL |
302 | |
303 | list->max_entries = max_channel_num; | |
304 | list->channels = kzalloc(sizeof(struct p54_channel_entry) * | |
305 | max_channel_num, GFP_KERNEL); | |
0d91f22b JL |
306 | if (!list->channels) { |
307 | ret = -ENOMEM; | |
1a9b6679 | 308 | goto free; |
0d91f22b | 309 | } |
1a9b6679 CL |
310 | |
311 | for (i = 0; i < max_channel_num; i++) { | |
312 | if (i < priv->iq_autocal_len) { | |
313 | freq = le16_to_cpu(priv->iq_autocal[i].freq); | |
314 | p54_update_channel_param(list, freq, CHAN_HAS_CAL); | |
315 | } | |
316 | ||
317 | if (i < priv->output_limit->entries) { | |
318 | freq = le16_to_cpup((__le16 *) (i * | |
319 | priv->output_limit->entry_size + | |
320 | priv->output_limit->offset + | |
321 | priv->output_limit->data)); | |
322 | ||
323 | p54_update_channel_param(list, freq, CHAN_HAS_LIMIT); | |
324 | } | |
325 | ||
326 | if (i < priv->curve_data->entries) { | |
327 | freq = le16_to_cpup((__le16 *) (i * | |
328 | priv->curve_data->entry_size + | |
329 | priv->curve_data->offset + | |
330 | priv->curve_data->data)); | |
331 | ||
332 | p54_update_channel_param(list, freq, CHAN_HAS_CURVE); | |
333 | } | |
334 | } | |
335 | ||
192abece | 336 | /* sort the channel list by frequency */ |
1a9b6679 CL |
337 | sort(list->channels, list->entries, sizeof(struct p54_channel_entry), |
338 | p54_compare_channels, NULL); | |
339 | ||
0d78156e | 340 | k = 0; |
1a9b6679 | 341 | for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) { |
0d78156e | 342 | if (p54_generate_band(dev, list, &k, i) == 0) |
1a9b6679 | 343 | j++; |
1a9b6679 CL |
344 | } |
345 | if (j == 0) { | |
346 | /* no useable band available. */ | |
347 | ret = -EINVAL; | |
348 | } | |
349 | ||
350 | free: | |
351 | if (list) { | |
352 | kfree(list->channels); | |
353 | kfree(list); | |
354 | } | |
0d78156e CL |
355 | if (ret) { |
356 | kfree(priv->survey); | |
357 | priv->survey = NULL; | |
358 | } | |
1a9b6679 CL |
359 | |
360 | return ret; | |
361 | } | |
362 | ||
4c8a32f5 CL |
363 | static int p54_convert_rev0(struct ieee80211_hw *dev, |
364 | struct pda_pa_curve_data *curve_data) | |
365 | { | |
366 | struct p54_common *priv = dev->priv; | |
367 | struct p54_pa_curve_data_sample *dst; | |
368 | struct pda_pa_curve_data_sample_rev0 *src; | |
369 | size_t cd_len = sizeof(*curve_data) + | |
370 | (curve_data->points_per_channel*sizeof(*dst) + 2) * | |
371 | curve_data->channels; | |
372 | unsigned int i, j; | |
373 | void *source, *target; | |
374 | ||
375 | priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len, | |
376 | GFP_KERNEL); | |
377 | if (!priv->curve_data) | |
378 | return -ENOMEM; | |
379 | ||
380 | priv->curve_data->entries = curve_data->channels; | |
381 | priv->curve_data->entry_size = sizeof(__le16) + | |
382 | sizeof(*dst) * curve_data->points_per_channel; | |
383 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); | |
384 | priv->curve_data->len = cd_len; | |
385 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); | |
386 | source = curve_data->data; | |
387 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; | |
388 | for (i = 0; i < curve_data->channels; i++) { | |
389 | __le16 *freq = source; | |
390 | source += sizeof(__le16); | |
391 | *((__le16 *)target) = *freq; | |
392 | target += sizeof(__le16); | |
393 | for (j = 0; j < curve_data->points_per_channel; j++) { | |
394 | dst = target; | |
395 | src = source; | |
396 | ||
397 | dst->rf_power = src->rf_power; | |
398 | dst->pa_detector = src->pa_detector; | |
399 | dst->data_64qam = src->pcv; | |
400 | /* "invent" the points for the other modulations */ | |
401 | #define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y)) | |
402 | dst->data_16qam = SUB(src->pcv, 12); | |
403 | dst->data_qpsk = SUB(dst->data_16qam, 12); | |
404 | dst->data_bpsk = SUB(dst->data_qpsk, 12); | |
405 | dst->data_barker = SUB(dst->data_bpsk, 14); | |
406 | #undef SUB | |
407 | target += sizeof(*dst); | |
408 | source += sizeof(*src); | |
409 | } | |
410 | } | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | static int p54_convert_rev1(struct ieee80211_hw *dev, | |
416 | struct pda_pa_curve_data *curve_data) | |
417 | { | |
418 | struct p54_common *priv = dev->priv; | |
419 | struct p54_pa_curve_data_sample *dst; | |
420 | struct pda_pa_curve_data_sample_rev1 *src; | |
421 | size_t cd_len = sizeof(*curve_data) + | |
422 | (curve_data->points_per_channel*sizeof(*dst) + 2) * | |
423 | curve_data->channels; | |
424 | unsigned int i, j; | |
425 | void *source, *target; | |
426 | ||
427 | priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data), | |
428 | GFP_KERNEL); | |
429 | if (!priv->curve_data) | |
430 | return -ENOMEM; | |
431 | ||
432 | priv->curve_data->entries = curve_data->channels; | |
433 | priv->curve_data->entry_size = sizeof(__le16) + | |
434 | sizeof(*dst) * curve_data->points_per_channel; | |
435 | priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); | |
436 | priv->curve_data->len = cd_len; | |
437 | memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); | |
438 | source = curve_data->data; | |
439 | target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; | |
440 | for (i = 0; i < curve_data->channels; i++) { | |
441 | __le16 *freq = source; | |
442 | source += sizeof(__le16); | |
443 | *((__le16 *)target) = *freq; | |
444 | target += sizeof(__le16); | |
445 | for (j = 0; j < curve_data->points_per_channel; j++) { | |
446 | memcpy(target, source, sizeof(*src)); | |
447 | ||
448 | target += sizeof(*dst); | |
449 | source += sizeof(*src); | |
450 | } | |
451 | source++; | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2", | |
458 | "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" }; | |
459 | ||
7a047f4f CL |
460 | static int p54_parse_rssical(struct ieee80211_hw *dev, |
461 | u8 *data, int len, u16 type) | |
4c8a32f5 CL |
462 | { |
463 | struct p54_common *priv = dev->priv; | |
7a047f4f CL |
464 | struct p54_rssi_db_entry *entry; |
465 | size_t db_len, entries; | |
466 | int offset = 0, i; | |
467 | ||
468 | if (type != PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { | |
469 | entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2; | |
470 | if (len != sizeof(struct pda_rssi_cal_entry) * entries) { | |
471 | wiphy_err(dev->wiphy, "rssical size mismatch.\n"); | |
472 | goto err_data; | |
473 | } | |
474 | } else { | |
475 | /* | |
476 | * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...) | |
477 | * have an empty two byte header. | |
478 | */ | |
479 | if (*((__le16 *)&data[offset]) == cpu_to_le16(0)) | |
480 | offset += 2; | |
4c8a32f5 | 481 | |
7a047f4f CL |
482 | entries = (len - offset) / |
483 | sizeof(struct pda_rssi_cal_ext_entry); | |
4c8a32f5 | 484 | |
7a047f4f CL |
485 | if ((len - offset) % sizeof(struct pda_rssi_cal_ext_entry) || |
486 | entries <= 0) { | |
487 | wiphy_err(dev->wiphy, "invalid rssi database.\n"); | |
488 | goto err_data; | |
489 | } | |
490 | } | |
4c8a32f5 | 491 | |
7a047f4f CL |
492 | db_len = sizeof(*entry) * entries; |
493 | priv->rssi_db = kzalloc(db_len + sizeof(*priv->rssi_db), GFP_KERNEL); | |
494 | if (!priv->rssi_db) | |
495 | return -ENOMEM; | |
496 | ||
497 | priv->rssi_db->offset = 0; | |
498 | priv->rssi_db->entries = entries; | |
499 | priv->rssi_db->entry_size = sizeof(*entry); | |
500 | priv->rssi_db->len = db_len; | |
501 | ||
502 | entry = (void *)((unsigned long)priv->rssi_db->data + priv->rssi_db->offset); | |
503 | if (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { | |
504 | struct pda_rssi_cal_ext_entry *cal = (void *) &data[offset]; | |
505 | ||
506 | for (i = 0; i < entries; i++) { | |
507 | entry[i].freq = le16_to_cpu(cal[i].freq); | |
508 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); | |
509 | entry[i].add = (s16) le16_to_cpu(cal[i].add); | |
510 | } | |
511 | } else { | |
512 | struct pda_rssi_cal_entry *cal = (void *) &data[offset]; | |
513 | ||
514 | for (i = 0; i < entries; i++) { | |
ce6cac88 | 515 | u16 freq = 0; |
7a047f4f CL |
516 | switch (i) { |
517 | case IEEE80211_BAND_2GHZ: | |
518 | freq = 2437; | |
519 | break; | |
520 | case IEEE80211_BAND_5GHZ: | |
521 | freq = 5240; | |
522 | break; | |
523 | } | |
524 | ||
525 | entry[i].freq = freq; | |
526 | entry[i].mul = (s16) le16_to_cpu(cal[i].mul); | |
527 | entry[i].add = (s16) le16_to_cpu(cal[i].add); | |
528 | } | |
4c8a32f5 CL |
529 | } |
530 | ||
7a047f4f CL |
531 | /* sort the list by channel frequency */ |
532 | sort(entry, entries, sizeof(*entry), p54_compare_rssichan, NULL); | |
533 | return 0; | |
534 | ||
535 | err_data: | |
536 | wiphy_err(dev->wiphy, | |
537 | "rssi calibration data packing type:(%x) len:%d.\n", | |
538 | type, len); | |
539 | ||
540 | print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, data, len); | |
541 | ||
542 | wiphy_err(dev->wiphy, "please report this issue.\n"); | |
543 | return -EINVAL; | |
544 | } | |
545 | ||
546 | struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *priv, const u16 freq) | |
547 | { | |
a5a7103f | 548 | struct p54_rssi_db_entry *entry; |
7a047f4f CL |
549 | int i, found = -1; |
550 | ||
a5a7103f FF |
551 | if (!priv->rssi_db) |
552 | return &p54_rssi_default; | |
553 | ||
554 | entry = (void *)(priv->rssi_db->data + priv->rssi_db->offset); | |
7a047f4f CL |
555 | for (i = 0; i < priv->rssi_db->entries; i++) { |
556 | if (!same_band(freq, entry[i].freq)) | |
557 | continue; | |
558 | ||
559 | if (found == -1) { | |
560 | found = i; | |
561 | continue; | |
562 | } | |
563 | ||
564 | /* nearest match */ | |
565 | if (abs(freq - entry[i].freq) < | |
566 | abs(freq - entry[found].freq)) { | |
567 | found = i; | |
568 | continue; | |
569 | } else { | |
570 | break; | |
571 | } | |
4c8a32f5 | 572 | } |
7a047f4f CL |
573 | |
574 | return found < 0 ? &p54_rssi_default : &entry[found]; | |
4c8a32f5 CL |
575 | } |
576 | ||
577 | static void p54_parse_default_country(struct ieee80211_hw *dev, | |
578 | void *data, int len) | |
579 | { | |
580 | struct pda_country *country; | |
581 | ||
582 | if (len != sizeof(*country)) { | |
c96c31e4 JP |
583 | wiphy_err(dev->wiphy, |
584 | "found possible invalid default country eeprom entry. (entry size: %d)\n", | |
585 | len); | |
4c8a32f5 CL |
586 | |
587 | print_hex_dump_bytes("country:", DUMP_PREFIX_NONE, | |
588 | data, len); | |
589 | ||
c96c31e4 | 590 | wiphy_err(dev->wiphy, "please report this issue.\n"); |
4c8a32f5 CL |
591 | return; |
592 | } | |
593 | ||
594 | country = (struct pda_country *) data; | |
595 | if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO) | |
596 | regulatory_hint(dev->wiphy, country->alpha2); | |
597 | else { | |
598 | /* TODO: | |
599 | * write a shared/common function that converts | |
600 | * "Regulatory domain codes" (802.11-2007 14.8.2.2) | |
601 | * into ISO/IEC 3166-1 alpha2 for regulatory_hint. | |
602 | */ | |
603 | } | |
604 | } | |
605 | ||
606 | static int p54_convert_output_limits(struct ieee80211_hw *dev, | |
607 | u8 *data, size_t len) | |
608 | { | |
609 | struct p54_common *priv = dev->priv; | |
610 | ||
611 | if (len < 2) | |
612 | return -EINVAL; | |
613 | ||
614 | if (data[0] != 0) { | |
c96c31e4 JP |
615 | wiphy_err(dev->wiphy, "unknown output power db revision:%x\n", |
616 | data[0]); | |
4c8a32f5 CL |
617 | return -EINVAL; |
618 | } | |
619 | ||
620 | if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len) | |
621 | return -EINVAL; | |
622 | ||
623 | priv->output_limit = kmalloc(data[1] * | |
624 | sizeof(struct pda_channel_output_limit) + | |
625 | sizeof(*priv->output_limit), GFP_KERNEL); | |
626 | ||
627 | if (!priv->output_limit) | |
628 | return -ENOMEM; | |
629 | ||
630 | priv->output_limit->offset = 0; | |
631 | priv->output_limit->entries = data[1]; | |
632 | priv->output_limit->entry_size = | |
633 | sizeof(struct pda_channel_output_limit); | |
634 | priv->output_limit->len = priv->output_limit->entry_size * | |
635 | priv->output_limit->entries + | |
636 | priv->output_limit->offset; | |
637 | ||
638 | memcpy(priv->output_limit->data, &data[2], | |
639 | data[1] * sizeof(struct pda_channel_output_limit)); | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
644 | static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src, | |
645 | size_t total_len) | |
646 | { | |
647 | struct p54_cal_database *dst; | |
648 | size_t payload_len, entries, entry_size, offset; | |
649 | ||
650 | payload_len = le16_to_cpu(src->len); | |
651 | entries = le16_to_cpu(src->entries); | |
652 | entry_size = le16_to_cpu(src->entry_size); | |
653 | offset = le16_to_cpu(src->offset); | |
654 | if (((entries * entry_size + offset) != payload_len) || | |
655 | (payload_len + sizeof(*src) != total_len)) | |
656 | return NULL; | |
657 | ||
658 | dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL); | |
659 | if (!dst) | |
660 | return NULL; | |
661 | ||
662 | dst->entries = entries; | |
663 | dst->entry_size = entry_size; | |
664 | dst->offset = offset; | |
665 | dst->len = payload_len; | |
666 | ||
667 | memcpy(dst->data, src->data, payload_len); | |
668 | return dst; | |
669 | } | |
670 | ||
671 | int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) | |
672 | { | |
673 | struct p54_common *priv = dev->priv; | |
e6a3f551 | 674 | struct eeprom_pda_wrap *wrap; |
4c8a32f5 CL |
675 | struct pda_entry *entry; |
676 | unsigned int data_len, entry_len; | |
677 | void *tmp; | |
678 | int err; | |
679 | u8 *end = (u8 *)eeprom + len; | |
680 | u16 synth = 0; | |
d7eb50c0 | 681 | u16 crc16 = ~0; |
4c8a32f5 CL |
682 | |
683 | wrap = (struct eeprom_pda_wrap *) eeprom; | |
684 | entry = (void *)wrap->data + le16_to_cpu(wrap->len); | |
685 | ||
686 | /* verify that at least the entry length/code fits */ | |
687 | while ((u8 *)entry <= end - sizeof(*entry)) { | |
688 | entry_len = le16_to_cpu(entry->len); | |
689 | data_len = ((entry_len - 1) << 1); | |
690 | ||
691 | /* abort if entry exceeds whole structure */ | |
692 | if ((u8 *)entry + sizeof(*entry) + data_len > end) | |
693 | break; | |
694 | ||
695 | switch (le16_to_cpu(entry->code)) { | |
696 | case PDR_MAC_ADDRESS: | |
697 | if (data_len != ETH_ALEN) | |
698 | break; | |
699 | SET_IEEE80211_PERM_ADDR(dev, entry->data); | |
700 | break; | |
701 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS: | |
702 | if (priv->output_limit) | |
703 | break; | |
704 | err = p54_convert_output_limits(dev, entry->data, | |
705 | data_len); | |
706 | if (err) | |
707 | goto err; | |
708 | break; | |
709 | case PDR_PRISM_PA_CAL_CURVE_DATA: { | |
710 | struct pda_pa_curve_data *curve_data = | |
711 | (struct pda_pa_curve_data *)entry->data; | |
712 | if (data_len < sizeof(*curve_data)) { | |
713 | err = -EINVAL; | |
714 | goto err; | |
715 | } | |
716 | ||
717 | switch (curve_data->cal_method_rev) { | |
718 | case 0: | |
719 | err = p54_convert_rev0(dev, curve_data); | |
720 | break; | |
721 | case 1: | |
722 | err = p54_convert_rev1(dev, curve_data); | |
723 | break; | |
724 | default: | |
c96c31e4 JP |
725 | wiphy_err(dev->wiphy, |
726 | "unknown curve data revision %d\n", | |
727 | curve_data->cal_method_rev); | |
4c8a32f5 CL |
728 | err = -ENODEV; |
729 | break; | |
730 | } | |
731 | if (err) | |
732 | goto err; | |
733 | } | |
734 | break; | |
735 | case PDR_PRISM_ZIF_TX_IQ_CALIBRATION: | |
27b81bbe JL |
736 | priv->iq_autocal = kmemdup(entry->data, data_len, |
737 | GFP_KERNEL); | |
4c8a32f5 CL |
738 | if (!priv->iq_autocal) { |
739 | err = -ENOMEM; | |
740 | goto err; | |
741 | } | |
742 | ||
4c8a32f5 CL |
743 | priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry); |
744 | break; | |
745 | case PDR_DEFAULT_COUNTRY: | |
746 | p54_parse_default_country(dev, entry->data, data_len); | |
747 | break; | |
748 | case PDR_INTERFACE_LIST: | |
749 | tmp = entry->data; | |
750 | while ((u8 *)tmp < entry->data + data_len) { | |
751 | struct exp_if *exp_if = tmp; | |
752 | if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000)) | |
753 | synth = le16_to_cpu(exp_if->variant); | |
754 | tmp += sizeof(*exp_if); | |
755 | } | |
756 | break; | |
757 | case PDR_HARDWARE_PLATFORM_COMPONENT_ID: | |
758 | if (data_len < 2) | |
759 | break; | |
760 | priv->version = *(u8 *)(entry->data + 1); | |
761 | break; | |
762 | case PDR_RSSI_LINEAR_APPROXIMATION: | |
763 | case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND: | |
764 | case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED: | |
7a047f4f CL |
765 | err = p54_parse_rssical(dev, entry->data, data_len, |
766 | le16_to_cpu(entry->code)); | |
767 | if (err) | |
768 | goto err; | |
4c8a32f5 | 769 | break; |
7a047f4f CL |
770 | case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: { |
771 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
772 | __le16 *src; | |
773 | u16 *dst; | |
4c8a32f5 CL |
774 | int i; |
775 | ||
7a047f4f CL |
776 | if (priv->rssi_db || data_len < sizeof(*pda)) |
777 | break; | |
778 | ||
779 | priv->rssi_db = p54_convert_db(pda, data_len); | |
780 | if (!priv->rssi_db) | |
781 | break; | |
782 | ||
783 | src = (void *) priv->rssi_db->data; | |
784 | dst = (void *) priv->rssi_db->data; | |
785 | ||
786 | for (i = 0; i < priv->rssi_db->entries; i++) | |
4c8a32f5 | 787 | *(dst++) = (s16) le16_to_cpu(*(src++)); |
7a047f4f | 788 | |
4c8a32f5 CL |
789 | } |
790 | break; | |
791 | case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: { | |
792 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
793 | if (priv->output_limit || data_len < sizeof(*pda)) | |
794 | break; | |
795 | priv->output_limit = p54_convert_db(pda, data_len); | |
796 | } | |
797 | break; | |
798 | case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: { | |
799 | struct pda_custom_wrapper *pda = (void *) entry->data; | |
800 | if (priv->curve_data || data_len < sizeof(*pda)) | |
801 | break; | |
802 | priv->curve_data = p54_convert_db(pda, data_len); | |
803 | } | |
804 | break; | |
805 | case PDR_END: | |
d7eb50c0 CL |
806 | crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry)); |
807 | if (crc16 != le16_to_cpup((__le16 *)entry->data)) { | |
808 | wiphy_err(dev->wiphy, "eeprom failed checksum " | |
809 | "test!\n"); | |
810 | err = -ENOMSG; | |
811 | goto err; | |
812 | } else { | |
813 | goto good_eeprom; | |
814 | } | |
4c8a32f5 CL |
815 | break; |
816 | default: | |
817 | break; | |
818 | } | |
819 | ||
d7eb50c0 CL |
820 | crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2); |
821 | entry = (void *)entry + (entry_len + 1) * 2; | |
4c8a32f5 CL |
822 | } |
823 | ||
d7eb50c0 CL |
824 | wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n"); |
825 | err = -ENODATA; | |
826 | goto err; | |
827 | ||
828 | good_eeprom: | |
4c8a32f5 CL |
829 | if (!synth || !priv->iq_autocal || !priv->output_limit || |
830 | !priv->curve_data) { | |
c96c31e4 JP |
831 | wiphy_err(dev->wiphy, |
832 | "not all required entries found in eeprom!\n"); | |
4c8a32f5 CL |
833 | err = -EINVAL; |
834 | goto err; | |
835 | } | |
836 | ||
1a9b6679 CL |
837 | err = p54_generate_channel_lists(dev); |
838 | if (err) | |
839 | goto err; | |
840 | ||
4c8a32f5 CL |
841 | priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; |
842 | if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW) | |
843 | p54_init_xbow_synth(priv); | |
844 | if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) | |
1a9b6679 CL |
845 | dev->wiphy->bands[IEEE80211_BAND_2GHZ] = |
846 | priv->band_table[IEEE80211_BAND_2GHZ]; | |
4c8a32f5 | 847 | if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) |
1a9b6679 CL |
848 | dev->wiphy->bands[IEEE80211_BAND_5GHZ] = |
849 | priv->band_table[IEEE80211_BAND_5GHZ]; | |
4c8a32f5 CL |
850 | if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED) |
851 | priv->rx_diversity_mask = 3; | |
852 | if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED) | |
853 | priv->tx_diversity_mask = 3; | |
854 | ||
855 | if (!is_valid_ether_addr(dev->wiphy->perm_addr)) { | |
856 | u8 perm_addr[ETH_ALEN]; | |
857 | ||
c96c31e4 | 858 | wiphy_warn(dev->wiphy, |
5db55844 | 859 | "Invalid hwaddr! Using randomly generated MAC addr\n"); |
4c8a32f5 CL |
860 | random_ether_addr(perm_addr); |
861 | SET_IEEE80211_PERM_ADDR(dev, perm_addr); | |
862 | } | |
863 | ||
7a047f4f CL |
864 | priv->cur_rssi = &p54_rssi_default; |
865 | ||
5db55844 | 866 | wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n", |
c96c31e4 JP |
867 | dev->wiphy->perm_addr, priv->version, |
868 | p54_rf_chips[priv->rxhw]); | |
4c8a32f5 CL |
869 | |
870 | return 0; | |
871 | ||
872 | err: | |
873 | kfree(priv->iq_autocal); | |
874 | kfree(priv->output_limit); | |
875 | kfree(priv->curve_data); | |
7a047f4f | 876 | kfree(priv->rssi_db); |
0d78156e | 877 | kfree(priv->survey); |
4c8a32f5 CL |
878 | priv->iq_autocal = NULL; |
879 | priv->output_limit = NULL; | |
880 | priv->curve_data = NULL; | |
7a047f4f | 881 | priv->rssi_db = NULL; |
0d78156e | 882 | priv->survey = NULL; |
4c8a32f5 | 883 | |
c96c31e4 | 884 | wiphy_err(dev->wiphy, "eeprom parse failed!\n"); |
4c8a32f5 CL |
885 | return err; |
886 | } | |
887 | EXPORT_SYMBOL_GPL(p54_parse_eeprom); | |
888 | ||
889 | int p54_read_eeprom(struct ieee80211_hw *dev) | |
890 | { | |
891 | struct p54_common *priv = dev->priv; | |
892 | size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize; | |
893 | int ret = -ENOMEM; | |
e6a3f551 | 894 | void *eeprom; |
4c8a32f5 CL |
895 | |
896 | maxblocksize = EEPROM_READBACK_LEN; | |
897 | if (priv->fw_var >= 0x509) | |
898 | maxblocksize -= 0xc; | |
899 | else | |
900 | maxblocksize -= 0x4; | |
901 | ||
902 | eeprom = kzalloc(eeprom_size, GFP_KERNEL); | |
903 | if (unlikely(!eeprom)) | |
904 | goto free; | |
905 | ||
906 | while (eeprom_size) { | |
907 | blocksize = min(eeprom_size, maxblocksize); | |
2c208890 | 908 | ret = p54_download_eeprom(priv, eeprom + offset, |
4c8a32f5 CL |
909 | offset, blocksize); |
910 | if (unlikely(ret)) | |
911 | goto free; | |
912 | ||
913 | offset += blocksize; | |
914 | eeprom_size -= blocksize; | |
915 | } | |
916 | ||
917 | ret = p54_parse_eeprom(dev, eeprom, offset); | |
918 | free: | |
919 | kfree(eeprom); | |
920 | return ret; | |
921 | } | |
922 | EXPORT_SYMBOL_GPL(p54_read_eeprom); |