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authorChristian Lamparter <chunkeey@web.de>2009-06-23 11:36:26 -0400
committerJohn W. Linville <linville@tuxdriver.com>2009-07-10 15:01:57 -0400
commit4c8a32f57105a78c49e01f083717cdb531d3c2b9 (patch)
tree94a498cf4b9f557c1fc806962165a743b8f3edf4 /drivers
parent35a0ace7739b50331c919a3255639f123b78eaff (diff)
p54: Move eeprom code
Copy the eeprom code from p54common.c into a new file eeprom.c Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/p54/eeprom.c564
1 files changed, 564 insertions, 0 deletions
diff --git a/drivers/net/wireless/p54/eeprom.c b/drivers/net/wireless/p54/eeprom.c
new file mode 100644
index 000000000000..a2a044ef1012
--- /dev/null
+++ b/drivers/net/wireless/p54/eeprom.c
@@ -0,0 +1,564 @@
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>
22
23#include <net/mac80211.h>
24
25#include "p54.h"
26#include "eeprom.h"
27#include "lmac.h"
28
29static struct ieee80211_rate p54_bgrates[] = {
30 { .bitrate = 10, .hw_value = 0, },
31 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
32 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
33 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
34 { .bitrate = 60, .hw_value = 4, },
35 { .bitrate = 90, .hw_value = 5, },
36 { .bitrate = 120, .hw_value = 6, },
37 { .bitrate = 180, .hw_value = 7, },
38 { .bitrate = 240, .hw_value = 8, },
39 { .bitrate = 360, .hw_value = 9, },
40 { .bitrate = 480, .hw_value = 10, },
41 { .bitrate = 540, .hw_value = 11, },
42};
43
44static struct ieee80211_channel p54_bgchannels[] = {
45 { .center_freq = 2412, .hw_value = 1, },
46 { .center_freq = 2417, .hw_value = 2, },
47 { .center_freq = 2422, .hw_value = 3, },
48 { .center_freq = 2427, .hw_value = 4, },
49 { .center_freq = 2432, .hw_value = 5, },
50 { .center_freq = 2437, .hw_value = 6, },
51 { .center_freq = 2442, .hw_value = 7, },
52 { .center_freq = 2447, .hw_value = 8, },
53 { .center_freq = 2452, .hw_value = 9, },
54 { .center_freq = 2457, .hw_value = 10, },
55 { .center_freq = 2462, .hw_value = 11, },
56 { .center_freq = 2467, .hw_value = 12, },
57 { .center_freq = 2472, .hw_value = 13, },
58 { .center_freq = 2484, .hw_value = 14, },
59};
60
61static struct ieee80211_supported_band band_2GHz = {
62 .channels = p54_bgchannels,
63 .n_channels = ARRAY_SIZE(p54_bgchannels),
64 .bitrates = p54_bgrates,
65 .n_bitrates = ARRAY_SIZE(p54_bgrates),
66};
67
68static struct ieee80211_rate p54_arates[] = {
69 { .bitrate = 60, .hw_value = 4, },
70 { .bitrate = 90, .hw_value = 5, },
71 { .bitrate = 120, .hw_value = 6, },
72 { .bitrate = 180, .hw_value = 7, },
73 { .bitrate = 240, .hw_value = 8, },
74 { .bitrate = 360, .hw_value = 9, },
75 { .bitrate = 480, .hw_value = 10, },
76 { .bitrate = 540, .hw_value = 11, },
77};
78
79static struct ieee80211_channel p54_achannels[] = {
80 { .center_freq = 4920 },
81 { .center_freq = 4940 },
82 { .center_freq = 4960 },
83 { .center_freq = 4980 },
84 { .center_freq = 5040 },
85 { .center_freq = 5060 },
86 { .center_freq = 5080 },
87 { .center_freq = 5170 },
88 { .center_freq = 5180 },
89 { .center_freq = 5190 },
90 { .center_freq = 5200 },
91 { .center_freq = 5210 },
92 { .center_freq = 5220 },
93 { .center_freq = 5230 },
94 { .center_freq = 5240 },
95 { .center_freq = 5260 },
96 { .center_freq = 5280 },
97 { .center_freq = 5300 },
98 { .center_freq = 5320 },
99 { .center_freq = 5500 },
100 { .center_freq = 5520 },
101 { .center_freq = 5540 },
102 { .center_freq = 5560 },
103 { .center_freq = 5580 },
104 { .center_freq = 5600 },
105 { .center_freq = 5620 },
106 { .center_freq = 5640 },
107 { .center_freq = 5660 },
108 { .center_freq = 5680 },
109 { .center_freq = 5700 },
110 { .center_freq = 5745 },
111 { .center_freq = 5765 },
112 { .center_freq = 5785 },
113 { .center_freq = 5805 },
114 { .center_freq = 5825 },
115};
116
117static struct ieee80211_supported_band band_5GHz = {
118 .channels = p54_achannels,
119 .n_channels = ARRAY_SIZE(p54_achannels),
120 .bitrates = p54_arates,
121 .n_bitrates = ARRAY_SIZE(p54_arates),
122};
123
124static int p54_convert_rev0(struct ieee80211_hw *dev,
125 struct pda_pa_curve_data *curve_data)
126{
127 struct p54_common *priv = dev->priv;
128 struct p54_pa_curve_data_sample *dst;
129 struct pda_pa_curve_data_sample_rev0 *src;
130 size_t cd_len = sizeof(*curve_data) +
131 (curve_data->points_per_channel*sizeof(*dst) + 2) *
132 curve_data->channels;
133 unsigned int i, j;
134 void *source, *target;
135
136 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
137 GFP_KERNEL);
138 if (!priv->curve_data)
139 return -ENOMEM;
140
141 priv->curve_data->entries = curve_data->channels;
142 priv->curve_data->entry_size = sizeof(__le16) +
143 sizeof(*dst) * curve_data->points_per_channel;
144 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
145 priv->curve_data->len = cd_len;
146 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
147 source = curve_data->data;
148 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
149 for (i = 0; i < curve_data->channels; i++) {
150 __le16 *freq = source;
151 source += sizeof(__le16);
152 *((__le16 *)target) = *freq;
153 target += sizeof(__le16);
154 for (j = 0; j < curve_data->points_per_channel; j++) {
155 dst = target;
156 src = source;
157
158 dst->rf_power = src->rf_power;
159 dst->pa_detector = src->pa_detector;
160 dst->data_64qam = src->pcv;
161 /* "invent" the points for the other modulations */
162#define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
163 dst->data_16qam = SUB(src->pcv, 12);
164 dst->data_qpsk = SUB(dst->data_16qam, 12);
165 dst->data_bpsk = SUB(dst->data_qpsk, 12);
166 dst->data_barker = SUB(dst->data_bpsk, 14);
167#undef SUB
168 target += sizeof(*dst);
169 source += sizeof(*src);
170 }
171 }
172
173 return 0;
174}
175
176static int p54_convert_rev1(struct ieee80211_hw *dev,
177 struct pda_pa_curve_data *curve_data)
178{
179 struct p54_common *priv = dev->priv;
180 struct p54_pa_curve_data_sample *dst;
181 struct pda_pa_curve_data_sample_rev1 *src;
182 size_t cd_len = sizeof(*curve_data) +
183 (curve_data->points_per_channel*sizeof(*dst) + 2) *
184 curve_data->channels;
185 unsigned int i, j;
186 void *source, *target;
187
188 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
189 GFP_KERNEL);
190 if (!priv->curve_data)
191 return -ENOMEM;
192
193 priv->curve_data->entries = curve_data->channels;
194 priv->curve_data->entry_size = sizeof(__le16) +
195 sizeof(*dst) * curve_data->points_per_channel;
196 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
197 priv->curve_data->len = cd_len;
198 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
199 source = curve_data->data;
200 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
201 for (i = 0; i < curve_data->channels; i++) {
202 __le16 *freq = source;
203 source += sizeof(__le16);
204 *((__le16 *)target) = *freq;
205 target += sizeof(__le16);
206 for (j = 0; j < curve_data->points_per_channel; j++) {
207 memcpy(target, source, sizeof(*src));
208
209 target += sizeof(*dst);
210 source += sizeof(*src);
211 }
212 source++;
213 }
214
215 return 0;
216}
217
218static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
219 "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
220
221static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
222 u16 type)
223{
224 struct p54_common *priv = dev->priv;
225 int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
226 int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
227 int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
228 int i;
229
230 if (len != (entry_size * num_entries)) {
231 printk(KERN_ERR "%s: unknown rssi calibration data packing "
232 " type:(%x) len:%d.\n",
233 wiphy_name(dev->wiphy), type, len);
234
235 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
236 data, len);
237
238 printk(KERN_ERR "%s: please report this issue.\n",
239 wiphy_name(dev->wiphy));
240 return;
241 }
242
243 for (i = 0; i < num_entries; i++) {
244 struct pda_rssi_cal_entry *cal = data +
245 (offset + i * entry_size);
246 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
247 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
248 }
249}
250
251static void p54_parse_default_country(struct ieee80211_hw *dev,
252 void *data, int len)
253{
254 struct pda_country *country;
255
256 if (len != sizeof(*country)) {
257 printk(KERN_ERR "%s: found possible invalid default country "
258 "eeprom entry. (entry size: %d)\n",
259 wiphy_name(dev->wiphy), len);
260
261 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
262 data, len);
263
264 printk(KERN_ERR "%s: please report this issue.\n",
265 wiphy_name(dev->wiphy));
266 return;
267 }
268
269 country = (struct pda_country *) data;
270 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
271 regulatory_hint(dev->wiphy, country->alpha2);
272 else {
273 /* TODO:
274 * write a shared/common function that converts
275 * "Regulatory domain codes" (802.11-2007 14.8.2.2)
276 * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
277 */
278 }
279}
280
281static int p54_convert_output_limits(struct ieee80211_hw *dev,
282 u8 *data, size_t len)
283{
284 struct p54_common *priv = dev->priv;
285
286 if (len < 2)
287 return -EINVAL;
288
289 if (data[0] != 0) {
290 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
291 wiphy_name(dev->wiphy), data[0]);
292 return -EINVAL;
293 }
294
295 if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
296 return -EINVAL;
297
298 priv->output_limit = kmalloc(data[1] *
299 sizeof(struct pda_channel_output_limit) +
300 sizeof(*priv->output_limit), GFP_KERNEL);
301
302 if (!priv->output_limit)
303 return -ENOMEM;
304
305 priv->output_limit->offset = 0;
306 priv->output_limit->entries = data[1];
307 priv->output_limit->entry_size =
308 sizeof(struct pda_channel_output_limit);
309 priv->output_limit->len = priv->output_limit->entry_size *
310 priv->output_limit->entries +
311 priv->output_limit->offset;
312
313 memcpy(priv->output_limit->data, &data[2],
314 data[1] * sizeof(struct pda_channel_output_limit));
315
316 return 0;
317}
318
319static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
320 size_t total_len)
321{
322 struct p54_cal_database *dst;
323 size_t payload_len, entries, entry_size, offset;
324
325 payload_len = le16_to_cpu(src->len);
326 entries = le16_to_cpu(src->entries);
327 entry_size = le16_to_cpu(src->entry_size);
328 offset = le16_to_cpu(src->offset);
329 if (((entries * entry_size + offset) != payload_len) ||
330 (payload_len + sizeof(*src) != total_len))
331 return NULL;
332
333 dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
334 if (!dst)
335 return NULL;
336
337 dst->entries = entries;
338 dst->entry_size = entry_size;
339 dst->offset = offset;
340 dst->len = payload_len;
341
342 memcpy(dst->data, src->data, payload_len);
343 return dst;
344}
345
346int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
347{
348 struct p54_common *priv = dev->priv;
349 struct eeprom_pda_wrap *wrap = NULL;
350 struct pda_entry *entry;
351 unsigned int data_len, entry_len;
352 void *tmp;
353 int err;
354 u8 *end = (u8 *)eeprom + len;
355 u16 synth = 0;
356
357 wrap = (struct eeprom_pda_wrap *) eeprom;
358 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
359
360 /* verify that at least the entry length/code fits */
361 while ((u8 *)entry <= end - sizeof(*entry)) {
362 entry_len = le16_to_cpu(entry->len);
363 data_len = ((entry_len - 1) << 1);
364
365 /* abort if entry exceeds whole structure */
366 if ((u8 *)entry + sizeof(*entry) + data_len > end)
367 break;
368
369 switch (le16_to_cpu(entry->code)) {
370 case PDR_MAC_ADDRESS:
371 if (data_len != ETH_ALEN)
372 break;
373 SET_IEEE80211_PERM_ADDR(dev, entry->data);
374 break;
375 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
376 if (priv->output_limit)
377 break;
378 err = p54_convert_output_limits(dev, entry->data,
379 data_len);
380 if (err)
381 goto err;
382 break;
383 case PDR_PRISM_PA_CAL_CURVE_DATA: {
384 struct pda_pa_curve_data *curve_data =
385 (struct pda_pa_curve_data *)entry->data;
386 if (data_len < sizeof(*curve_data)) {
387 err = -EINVAL;
388 goto err;
389 }
390
391 switch (curve_data->cal_method_rev) {
392 case 0:
393 err = p54_convert_rev0(dev, curve_data);
394 break;
395 case 1:
396 err = p54_convert_rev1(dev, curve_data);
397 break;
398 default:
399 printk(KERN_ERR "%s: unknown curve data "
400 "revision %d\n",
401 wiphy_name(dev->wiphy),
402 curve_data->cal_method_rev);
403 err = -ENODEV;
404 break;
405 }
406 if (err)
407 goto err;
408 }
409 break;
410 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
411 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
412 if (!priv->iq_autocal) {
413 err = -ENOMEM;
414 goto err;
415 }
416
417 memcpy(priv->iq_autocal, entry->data, data_len);
418 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
419 break;
420 case PDR_DEFAULT_COUNTRY:
421 p54_parse_default_country(dev, entry->data, data_len);
422 break;
423 case PDR_INTERFACE_LIST:
424 tmp = entry->data;
425 while ((u8 *)tmp < entry->data + data_len) {
426 struct exp_if *exp_if = tmp;
427 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))
428 synth = le16_to_cpu(exp_if->variant);
429 tmp += sizeof(*exp_if);
430 }
431 break;
432 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
433 if (data_len < 2)
434 break;
435 priv->version = *(u8 *)(entry->data + 1);
436 break;
437 case PDR_RSSI_LINEAR_APPROXIMATION:
438 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
439 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
440 p54_parse_rssical(dev, entry->data, data_len,
441 le16_to_cpu(entry->code));
442 break;
443 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
444 __le16 *src = (void *) entry->data;
445 s16 *dst = (void *) &priv->rssical_db;
446 int i;
447
448 if (data_len != sizeof(priv->rssical_db)) {
449 err = -EINVAL;
450 goto err;
451 }
452 for (i = 0; i < sizeof(priv->rssical_db) /
453 sizeof(*src); i++)
454 *(dst++) = (s16) le16_to_cpu(*(src++));
455 }
456 break;
457 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
458 struct pda_custom_wrapper *pda = (void *) entry->data;
459 if (priv->output_limit || data_len < sizeof(*pda))
460 break;
461 priv->output_limit = p54_convert_db(pda, data_len);
462 }
463 break;
464 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
465 struct pda_custom_wrapper *pda = (void *) entry->data;
466 if (priv->curve_data || data_len < sizeof(*pda))
467 break;
468 priv->curve_data = p54_convert_db(pda, data_len);
469 }
470 break;
471 case PDR_END:
472 /* make it overrun */
473 entry_len = len;
474 break;
475 default:
476 break;
477 }
478
479 entry = (void *)entry + (entry_len + 1)*2;
480 }
481
482 if (!synth || !priv->iq_autocal || !priv->output_limit ||
483 !priv->curve_data) {
484 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
485 wiphy_name(dev->wiphy));
486 err = -EINVAL;
487 goto err;
488 }
489
490 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
491 if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
492 p54_init_xbow_synth(priv);
493 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
494 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
495 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
496 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
497 if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
498 priv->rx_diversity_mask = 3;
499 if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
500 priv->tx_diversity_mask = 3;
501
502 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
503 u8 perm_addr[ETH_ALEN];
504
505 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
506 wiphy_name(dev->wiphy));
507 random_ether_addr(perm_addr);
508 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
509 }
510
511 printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
512 wiphy_name(dev->wiphy), dev->wiphy->perm_addr, priv->version,
513 p54_rf_chips[priv->rxhw]);
514
515 return 0;
516
517err:
518 kfree(priv->iq_autocal);
519 kfree(priv->output_limit);
520 kfree(priv->curve_data);
521 priv->iq_autocal = NULL;
522 priv->output_limit = NULL;
523 priv->curve_data = NULL;
524
525 printk(KERN_ERR "%s: eeprom parse failed!\n",
526 wiphy_name(dev->wiphy));
527 return err;
528}
529EXPORT_SYMBOL_GPL(p54_parse_eeprom);
530
531int p54_read_eeprom(struct ieee80211_hw *dev)
532{
533 struct p54_common *priv = dev->priv;
534 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
535 int ret = -ENOMEM;
536 void *eeprom = NULL;
537
538 maxblocksize = EEPROM_READBACK_LEN;
539 if (priv->fw_var >= 0x509)
540 maxblocksize -= 0xc;
541 else
542 maxblocksize -= 0x4;
543
544 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
545 if (unlikely(!eeprom))
546 goto free;
547
548 while (eeprom_size) {
549 blocksize = min(eeprom_size, maxblocksize);
550 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
551 offset, blocksize);
552 if (unlikely(ret))
553 goto free;
554
555 offset += blocksize;
556 eeprom_size -= blocksize;
557 }
558
559 ret = p54_parse_eeprom(dev, eeprom, offset);
560free:
561 kfree(eeprom);
562 return ret;
563}
564EXPORT_SYMBOL_GPL(p54_read_eeprom);
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