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p54: remove obsolet signal quality calculation
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / p54 / p54common.c
blobb18fc93a8bce02b6c68fb0e5abffc251471ecf7b
1 /*
2 * Common code for mac80211 Prism54 drivers
3 *
4 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
5 * Copyright (c) 2007, 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 #ifdef CONFIG_P54_LEDS
25 #include <linux/leds.h>
26 #endif /* CONFIG_P54_LEDS */
27
28 #include "p54.h"
29 #include "p54common.h"
30
31 static int modparam_nohwcrypt;
32 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
33 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
34 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
35 MODULE_DESCRIPTION("Softmac Prism54 common code");
36 MODULE_LICENSE("GPL");
37 MODULE_ALIAS("prism54common");
38
39 static struct ieee80211_rate p54_bgrates[] = {
40 { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
41 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
42 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
43 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
44 { .bitrate = 60, .hw_value = 4, },
45 { .bitrate = 90, .hw_value = 5, },
46 { .bitrate = 120, .hw_value = 6, },
47 { .bitrate = 180, .hw_value = 7, },
48 { .bitrate = 240, .hw_value = 8, },
49 { .bitrate = 360, .hw_value = 9, },
50 { .bitrate = 480, .hw_value = 10, },
51 { .bitrate = 540, .hw_value = 11, },
52 };
53
54 static struct ieee80211_channel p54_bgchannels[] = {
55 { .center_freq = 2412, .hw_value = 1, },
56 { .center_freq = 2417, .hw_value = 2, },
57 { .center_freq = 2422, .hw_value = 3, },
58 { .center_freq = 2427, .hw_value = 4, },
59 { .center_freq = 2432, .hw_value = 5, },
60 { .center_freq = 2437, .hw_value = 6, },
61 { .center_freq = 2442, .hw_value = 7, },
62 { .center_freq = 2447, .hw_value = 8, },
63 { .center_freq = 2452, .hw_value = 9, },
64 { .center_freq = 2457, .hw_value = 10, },
65 { .center_freq = 2462, .hw_value = 11, },
66 { .center_freq = 2467, .hw_value = 12, },
67 { .center_freq = 2472, .hw_value = 13, },
68 { .center_freq = 2484, .hw_value = 14, },
69 };
70
71 static struct ieee80211_supported_band band_2GHz = {
72 .channels = p54_bgchannels,
73 .n_channels = ARRAY_SIZE(p54_bgchannels),
74 .bitrates = p54_bgrates,
75 .n_bitrates = ARRAY_SIZE(p54_bgrates),
76 };
77
78 static struct ieee80211_rate p54_arates[] = {
79 { .bitrate = 60, .hw_value = 4, },
80 { .bitrate = 90, .hw_value = 5, },
81 { .bitrate = 120, .hw_value = 6, },
82 { .bitrate = 180, .hw_value = 7, },
83 { .bitrate = 240, .hw_value = 8, },
84 { .bitrate = 360, .hw_value = 9, },
85 { .bitrate = 480, .hw_value = 10, },
86 { .bitrate = 540, .hw_value = 11, },
87 };
88
89 static struct ieee80211_channel p54_achannels[] = {
90 { .center_freq = 4920 },
91 { .center_freq = 4940 },
92 { .center_freq = 4960 },
93 { .center_freq = 4980 },
94 { .center_freq = 5040 },
95 { .center_freq = 5060 },
96 { .center_freq = 5080 },
97 { .center_freq = 5170 },
98 { .center_freq = 5180 },
99 { .center_freq = 5190 },
100 { .center_freq = 5200 },
101 { .center_freq = 5210 },
102 { .center_freq = 5220 },
103 { .center_freq = 5230 },
104 { .center_freq = 5240 },
105 { .center_freq = 5260 },
106 { .center_freq = 5280 },
107 { .center_freq = 5300 },
108 { .center_freq = 5320 },
109 { .center_freq = 5500 },
110 { .center_freq = 5520 },
111 { .center_freq = 5540 },
112 { .center_freq = 5560 },
113 { .center_freq = 5580 },
114 { .center_freq = 5600 },
115 { .center_freq = 5620 },
116 { .center_freq = 5640 },
117 { .center_freq = 5660 },
118 { .center_freq = 5680 },
119 { .center_freq = 5700 },
120 { .center_freq = 5745 },
121 { .center_freq = 5765 },
122 { .center_freq = 5785 },
123 { .center_freq = 5805 },
124 { .center_freq = 5825 },
125 };
126
127 static struct ieee80211_supported_band band_5GHz = {
128 .channels = p54_achannels,
129 .n_channels = ARRAY_SIZE(p54_achannels),
130 .bitrates = p54_arates,
131 .n_bitrates = ARRAY_SIZE(p54_arates),
132 };
133
134 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
135 {
136 struct p54_common *priv = dev->priv;
137 struct bootrec_exp_if *exp_if;
138 struct bootrec *bootrec;
139 u32 *data = (u32 *)fw->data;
140 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
141 u8 *fw_version = NULL;
142 size_t len;
143 int i;
144 int maxlen;
145
146 if (priv->rx_start)
147 return 0;
148
149 while (data < end_data && *data)
150 data++;
151
152 while (data < end_data && !*data)
153 data++;
154
155 bootrec = (struct bootrec *) data;
156
157 while (bootrec->data <= end_data &&
158 (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
159 u32 code = le32_to_cpu(bootrec->code);
160 switch (code) {
161 case BR_CODE_COMPONENT_ID:
162 priv->fw_interface = be32_to_cpup((__be32 *)
163 bootrec->data);
164 switch (priv->fw_interface) {
165 case FW_LM86:
166 case FW_LM20:
167 case FW_LM87: {
168 char *iftype = (char *)bootrec->data;
169 printk(KERN_INFO "%s: p54 detected a LM%c%c "
170 "firmware\n",
171 wiphy_name(dev->wiphy),
172 iftype[2], iftype[3]);
173 break;
174 }
175 case FW_FMAC:
176 default:
177 printk(KERN_ERR "%s: unsupported firmware\n",
178 wiphy_name(dev->wiphy));
179 return -ENODEV;
180 }
181 break;
182 case BR_CODE_COMPONENT_VERSION:
183 /* 24 bytes should be enough for all firmwares */
184 if (strnlen((unsigned char*)bootrec->data, 24) < 24)
185 fw_version = (unsigned char*)bootrec->data;
186 break;
187 case BR_CODE_DESCR: {
188 struct bootrec_desc *desc =
189 (struct bootrec_desc *)bootrec->data;
190 priv->rx_start = le32_to_cpu(desc->rx_start);
191 /* FIXME add sanity checking */
192 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
193 priv->headroom = desc->headroom;
194 priv->tailroom = desc->tailroom;
195 priv->privacy_caps = desc->privacy_caps;
196 priv->rx_keycache_size = desc->rx_keycache_size;
197 if (le32_to_cpu(bootrec->len) == 11)
198 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
199 else
200 priv->rx_mtu = (size_t)
201 0x620 - priv->tx_hdr_len;
202 maxlen = priv->tx_hdr_len + /* USB devices */
203 sizeof(struct p54_rx_data) +
204 4 + /* rx alignment */
205 IEEE80211_MAX_FRAG_THRESHOLD;
206 if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
207 printk(KERN_INFO "p54: rx_mtu reduced from %d "
208 "to %d\n", priv->rx_mtu,
209 maxlen);
210 priv->rx_mtu = maxlen;
211 }
212 break;
213 }
214 case BR_CODE_EXPOSED_IF:
215 exp_if = (struct bootrec_exp_if *) bootrec->data;
216 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
217 if (exp_if[i].if_id == cpu_to_le16(0x1a))
218 priv->fw_var = le16_to_cpu(exp_if[i].variant);
219 break;
220 case BR_CODE_DEPENDENT_IF:
221 break;
222 case BR_CODE_END_OF_BRA:
223 case LEGACY_BR_CODE_END_OF_BRA:
224 end_data = NULL;
225 break;
226 default:
227 break;
228 }
229 bootrec = (struct bootrec *)&bootrec->data[len];
230 }
231
232 if (fw_version)
233 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
234 wiphy_name(dev->wiphy), fw_version,
235 priv->fw_var >> 8, priv->fw_var & 0xff);
236
237 if (priv->fw_var < 0x500)
238 printk(KERN_INFO "%s: you are using an obsolete firmware. "
239 "visit http://wireless.kernel.org/en/users/Drivers/p54 "
240 "and grab one for \"kernel >= 2.6.28\"!\n",
241 wiphy_name(dev->wiphy));
242
243 if (priv->fw_var >= 0x300) {
244 /* Firmware supports QoS, use it! */
245 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
246 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
247 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
248 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
249 dev->queues = P54_QUEUE_AC_NUM;
250 }
251
252 if (!modparam_nohwcrypt) {
253 printk(KERN_INFO "%s: cryptographic accelerator "
254 "WEP:%s, TKIP:%s, CCMP:%s\n",
255 wiphy_name(dev->wiphy),
256 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
257 "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
258 BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
259 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
260 "YES" : "no");
261
262 if (priv->rx_keycache_size) {
263 /*
264 * NOTE:
265 *
266 * The firmware provides at most 255 (0 - 254) slots
267 * for keys which are then used to offload decryption.
268 * As a result the 255 entry (aka 0xff) can be used
269 * safely by the driver to mark keys that didn't fit
270 * into the full cache. This trick saves us from
271 * keeping a extra list for uploaded keys.
272 */
273
274 priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
275 priv->rx_keycache_size), GFP_KERNEL);
276
277 if (!priv->used_rxkeys)
278 return -ENOMEM;
279 }
280 }
281
282 return 0;
283 }
284 EXPORT_SYMBOL_GPL(p54_parse_firmware);
285
286 static int p54_convert_rev0(struct ieee80211_hw *dev,
287 struct pda_pa_curve_data *curve_data)
288 {
289 struct p54_common *priv = dev->priv;
290 struct p54_pa_curve_data_sample *dst;
291 struct pda_pa_curve_data_sample_rev0 *src;
292 size_t cd_len = sizeof(*curve_data) +
293 (curve_data->points_per_channel*sizeof(*dst) + 2) *
294 curve_data->channels;
295 unsigned int i, j;
296 void *source, *target;
297
298 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
299 GFP_KERNEL);
300 if (!priv->curve_data)
301 return -ENOMEM;
302
303 priv->curve_data->entries = curve_data->channels;
304 priv->curve_data->entry_size = sizeof(__le16) +
305 sizeof(*dst) * curve_data->points_per_channel;
306 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
307 priv->curve_data->len = cd_len;
308 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
309 source = curve_data->data;
310 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
311 for (i = 0; i < curve_data->channels; i++) {
312 __le16 *freq = source;
313 source += sizeof(__le16);
314 *((__le16 *)target) = *freq;
315 target += sizeof(__le16);
316 for (j = 0; j < curve_data->points_per_channel; j++) {
317 dst = target;
318 src = source;
319
320 dst->rf_power = src->rf_power;
321 dst->pa_detector = src->pa_detector;
322 dst->data_64qam = src->pcv;
323 /* "invent" the points for the other modulations */
324 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
325 dst->data_16qam = SUB(src->pcv, 12);
326 dst->data_qpsk = SUB(dst->data_16qam, 12);
327 dst->data_bpsk = SUB(dst->data_qpsk, 12);
328 dst->data_barker = SUB(dst->data_bpsk, 14);
329 #undef SUB
330 target += sizeof(*dst);
331 source += sizeof(*src);
332 }
333 }
334
335 return 0;
336 }
337
338 static int p54_convert_rev1(struct ieee80211_hw *dev,
339 struct pda_pa_curve_data *curve_data)
340 {
341 struct p54_common *priv = dev->priv;
342 struct p54_pa_curve_data_sample *dst;
343 struct pda_pa_curve_data_sample_rev1 *src;
344 size_t cd_len = sizeof(*curve_data) +
345 (curve_data->points_per_channel*sizeof(*dst) + 2) *
346 curve_data->channels;
347 unsigned int i, j;
348 void *source, *target;
349
350 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
351 GFP_KERNEL);
352 if (!priv->curve_data)
353 return -ENOMEM;
354
355 priv->curve_data->entries = curve_data->channels;
356 priv->curve_data->entry_size = sizeof(__le16) +
357 sizeof(*dst) * curve_data->points_per_channel;
358 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
359 priv->curve_data->len = cd_len;
360 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
361 source = curve_data->data;
362 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
363 for (i = 0; i < curve_data->channels; i++) {
364 __le16 *freq = source;
365 source += sizeof(__le16);
366 *((__le16 *)target) = *freq;
367 target += sizeof(__le16);
368 for (j = 0; j < curve_data->points_per_channel; j++) {
369 memcpy(target, source, sizeof(*src));
370
371 target += sizeof(*dst);
372 source += sizeof(*src);
373 }
374 source++;
375 }
376
377 return 0;
378 }
379
380 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
381 "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
382 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
383
384 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
385 u16 type)
386 {
387 struct p54_common *priv = dev->priv;
388 int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
389 int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
390 int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
391 int i;
392
393 if (len != (entry_size * num_entries)) {
394 printk(KERN_ERR "%s: unknown rssi calibration data packing "
395 " type:(%x) len:%d.\n",
396 wiphy_name(dev->wiphy), type, len);
397
398 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
399 data, len);
400
401 printk(KERN_ERR "%s: please report this issue.\n",
402 wiphy_name(dev->wiphy));
403 return;
404 }
405
406 for (i = 0; i < num_entries; i++) {
407 struct pda_rssi_cal_entry *cal = data +
408 (offset + i * entry_size);
409 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
410 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
411 }
412 }
413
414 static void p54_parse_default_country(struct ieee80211_hw *dev,
415 void *data, int len)
416 {
417 struct pda_country *country;
418
419 if (len != sizeof(*country)) {
420 printk(KERN_ERR "%s: found possible invalid default country "
421 "eeprom entry. (entry size: %d)\n",
422 wiphy_name(dev->wiphy), len);
423
424 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
425 data, len);
426
427 printk(KERN_ERR "%s: please report this issue.\n",
428 wiphy_name(dev->wiphy));
429 return;
430 }
431
432 country = (struct pda_country *) data;
433 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
434 regulatory_hint(dev->wiphy, country->alpha2);
435 else {
436 /* TODO:
437 * write a shared/common function that converts
438 * "Regulatory domain codes" (802.11-2007 14.8.2.2)
439 * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
440 */
441 }
442 }
443
444 static int p54_convert_output_limits(struct ieee80211_hw *dev,
445 u8 *data, size_t len)
446 {
447 struct p54_common *priv = dev->priv;
448
449 if (len < 2)
450 return -EINVAL;
451
452 if (data[0] != 0) {
453 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
454 wiphy_name(dev->wiphy), data[0]);
455 return -EINVAL;
456 }
457
458 if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
459 return -EINVAL;
460
461 priv->output_limit = kmalloc(data[1] *
462 sizeof(struct pda_channel_output_limit) +
463 sizeof(*priv->output_limit), GFP_KERNEL);
464
465 if (!priv->output_limit)
466 return -ENOMEM;
467
468 priv->output_limit->offset = 0;
469 priv->output_limit->entries = data[1];
470 priv->output_limit->entry_size =
471 sizeof(struct pda_channel_output_limit);
472 priv->output_limit->len = priv->output_limit->entry_size *
473 priv->output_limit->entries +
474 priv->output_limit->offset;
475
476 memcpy(priv->output_limit->data, &data[2],
477 data[1] * sizeof(struct pda_channel_output_limit));
478
479 return 0;
480 }
481
482 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
483 size_t total_len)
484 {
485 struct p54_cal_database *dst;
486 size_t payload_len, entries, entry_size, offset;
487
488 payload_len = le16_to_cpu(src->len);
489 entries = le16_to_cpu(src->entries);
490 entry_size = le16_to_cpu(src->entry_size);
491 offset = le16_to_cpu(src->offset);
492 if (((entries * entry_size + offset) != payload_len) ||
493 (payload_len + sizeof(*src) != total_len))
494 return NULL;
495
496 dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
497 if (!dst)
498 return NULL;
499
500 dst->entries = entries;
501 dst->entry_size = entry_size;
502 dst->offset = offset;
503 dst->len = payload_len;
504
505 memcpy(dst->data, src->data, payload_len);
506 return dst;
507 }
508
509 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
510 {
511 struct p54_common *priv = dev->priv;
512 struct eeprom_pda_wrap *wrap = NULL;
513 struct pda_entry *entry;
514 unsigned int data_len, entry_len;
515 void *tmp;
516 int err;
517 u8 *end = (u8 *)eeprom + len;
518 u16 synth = 0;
519
520 wrap = (struct eeprom_pda_wrap *) eeprom;
521 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
522
523 /* verify that at least the entry length/code fits */
524 while ((u8 *)entry <= end - sizeof(*entry)) {
525 entry_len = le16_to_cpu(entry->len);
526 data_len = ((entry_len - 1) << 1);
527
528 /* abort if entry exceeds whole structure */
529 if ((u8 *)entry + sizeof(*entry) + data_len > end)
530 break;
531
532 switch (le16_to_cpu(entry->code)) {
533 case PDR_MAC_ADDRESS:
534 if (data_len != ETH_ALEN)
535 break;
536 SET_IEEE80211_PERM_ADDR(dev, entry->data);
537 break;
538 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
539 if (priv->output_limit)
540 break;
541 err = p54_convert_output_limits(dev, entry->data,
542 data_len);
543 if (err)
544 goto err;
545 break;
546 case PDR_PRISM_PA_CAL_CURVE_DATA: {
547 struct pda_pa_curve_data *curve_data =
548 (struct pda_pa_curve_data *)entry->data;
549 if (data_len < sizeof(*curve_data)) {
550 err = -EINVAL;
551 goto err;
552 }
553
554 switch (curve_data->cal_method_rev) {
555 case 0:
556 err = p54_convert_rev0(dev, curve_data);
557 break;
558 case 1:
559 err = p54_convert_rev1(dev, curve_data);
560 break;
561 default:
562 printk(KERN_ERR "%s: unknown curve data "
563 "revision %d\n",
564 wiphy_name(dev->wiphy),
565 curve_data->cal_method_rev);
566 err = -ENODEV;
567 break;
568 }
569 if (err)
570 goto err;
571 }
572 break;
573 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
574 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
575 if (!priv->iq_autocal) {
576 err = -ENOMEM;
577 goto err;
578 }
579
580 memcpy(priv->iq_autocal, entry->data, data_len);
581 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
582 break;
583 case PDR_DEFAULT_COUNTRY:
584 p54_parse_default_country(dev, entry->data, data_len);
585 break;
586 case PDR_INTERFACE_LIST:
587 tmp = entry->data;
588 while ((u8 *)tmp < entry->data + data_len) {
589 struct bootrec_exp_if *exp_if = tmp;
590 if (le16_to_cpu(exp_if->if_id) == 0xf)
591 synth = le16_to_cpu(exp_if->variant);
592 tmp += sizeof(struct bootrec_exp_if);
593 }
594 break;
595 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
596 if (data_len < 2)
597 break;
598 priv->version = *(u8 *)(entry->data + 1);
599 break;
600 case PDR_RSSI_LINEAR_APPROXIMATION:
601 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
602 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
603 p54_parse_rssical(dev, entry->data, data_len,
604 le16_to_cpu(entry->code));
605 break;
606 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
607 __le16 *src = (void *) entry->data;
608 s16 *dst = (void *) &priv->rssical_db;
609 int i;
610
611 if (data_len != sizeof(priv->rssical_db)) {
612 err = -EINVAL;
613 goto err;
614 }
615 for (i = 0; i < sizeof(priv->rssical_db) /
616 sizeof(*src); i++)
617 *(dst++) = (s16) le16_to_cpu(*(src++));
618 }
619 break;
620 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
621 struct pda_custom_wrapper *pda = (void *) entry->data;
622 if (priv->output_limit || data_len < sizeof(*pda))
623 break;
624 priv->output_limit = p54_convert_db(pda, data_len);
625 }
626 break;
627 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
628 struct pda_custom_wrapper *pda = (void *) entry->data;
629 if (priv->curve_data || data_len < sizeof(*pda))
630 break;
631 priv->curve_data = p54_convert_db(pda, data_len);
632 }
633 break;
634 case PDR_END:
635 /* make it overrun */
636 entry_len = len;
637 break;
638 case PDR_MANUFACTURING_PART_NUMBER:
639 case PDR_PDA_VERSION:
640 case PDR_NIC_SERIAL_NUMBER:
641 case PDR_REGULATORY_DOMAIN_LIST:
642 case PDR_TEMPERATURE_TYPE:
643 case PDR_PRISM_PCI_IDENTIFIER:
644 case PDR_COUNTRY_INFORMATION:
645 case PDR_OEM_NAME:
646 case PDR_PRODUCT_NAME:
647 case PDR_UTF8_OEM_NAME:
648 case PDR_UTF8_PRODUCT_NAME:
649 case PDR_COUNTRY_LIST:
650 case PDR_ANTENNA_GAIN:
651 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
652 case PDR_REGULATORY_POWER_LIMITS:
653 case PDR_RADIATED_TRANSMISSION_CORRECTION:
654 case PDR_PRISM_TX_IQ_CALIBRATION:
655 case PDR_BASEBAND_REGISTERS:
656 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
657 break;
658 default:
659 printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
660 wiphy_name(dev->wiphy),
661 le16_to_cpu(entry->code));
662 break;
663 }
664
665 entry = (void *)entry + (entry_len + 1)*2;
666 }
667
668 if (!synth || !priv->iq_autocal || !priv->output_limit ||
669 !priv->curve_data) {
670 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
671 wiphy_name(dev->wiphy));
672 err = -EINVAL;
673 goto err;
674 }
675
676 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
677 if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
678 p54_init_xbow_synth(dev);
679 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
680 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
681 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
682 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
683 if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
684 priv->rx_diversity_mask = 3;
685 if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
686 priv->tx_diversity_mask = 3;
687
688 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
689 u8 perm_addr[ETH_ALEN];
690
691 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
692 wiphy_name(dev->wiphy));
693 random_ether_addr(perm_addr);
694 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
695 }
696
697 printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
698 wiphy_name(dev->wiphy),
699 dev->wiphy->perm_addr,
700 priv->version, p54_rf_chips[priv->rxhw]);
701
702 return 0;
703
704 err:
705 if (priv->iq_autocal) {
706 kfree(priv->iq_autocal);
707 priv->iq_autocal = NULL;
708 }
709
710 if (priv->output_limit) {
711 kfree(priv->output_limit);
712 priv->output_limit = NULL;
713 }
714
715 if (priv->curve_data) {
716 kfree(priv->curve_data);
717 priv->curve_data = NULL;
718 }
719
720 printk(KERN_ERR "%s: eeprom parse failed!\n",
721 wiphy_name(dev->wiphy));
722 return err;
723 }
724 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
725
726 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
727 {
728 struct p54_common *priv = dev->priv;
729 int band = dev->conf.channel->band;
730
731 if (priv->rxhw != PDR_SYNTH_FRONTEND_LONGBOW)
732 return ((rssi * priv->rssical_db[band].mul) / 64 +
733 priv->rssical_db[band].add) / 4;
734 else
735 /*
736 * TODO: find the correct formula
737 */
738 return ((rssi * priv->rssical_db[band].mul) / 64 +
739 priv->rssical_db[band].add) / 4;
740 }
741
742 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
743 {
744 struct p54_common *priv = dev->priv;
745 struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
746 struct ieee80211_rx_status rx_status = {0};
747 u16 freq = le16_to_cpu(hdr->freq);
748 size_t header_len = sizeof(*hdr);
749 u32 tsf32;
750 u8 rate = hdr->rate & 0xf;
751
752 /*
753 * If the device is in a unspecified state we have to
754 * ignore all data frames. Else we could end up with a
755 * nasty crash.
756 */
757 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
758 return 0;
759
760 if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
761 return 0;
762 }
763
764 if (hdr->decrypt_status == P54_DECRYPT_OK)
765 rx_status.flag |= RX_FLAG_DECRYPTED;
766 if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
767 (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
768 rx_status.flag |= RX_FLAG_MMIC_ERROR;
769
770 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
771 rx_status.noise = priv->noise;
772 if (hdr->rate & 0x10)
773 rx_status.flag |= RX_FLAG_SHORTPRE;
774 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
775 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
776 else
777 rx_status.rate_idx = rate;
778
779 rx_status.freq = freq;
780 rx_status.band = dev->conf.channel->band;
781 rx_status.antenna = hdr->antenna;
782
783 tsf32 = le32_to_cpu(hdr->tsf32);
784 if (tsf32 < priv->tsf_low32)
785 priv->tsf_high32++;
786 rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
787 priv->tsf_low32 = tsf32;
788
789 rx_status.flag |= RX_FLAG_TSFT;
790
791 if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
792 header_len += hdr->align[0];
793
794 skb_pull(skb, header_len);
795 skb_trim(skb, le16_to_cpu(hdr->len));
796
797 ieee80211_rx_irqsafe(dev, skb, &rx_status);
798
799 queue_delayed_work(dev->workqueue, &priv->work,
800 msecs_to_jiffies(P54_STATISTICS_UPDATE));
801
802 return -1;
803 }
804
805 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
806 {
807 struct p54_common *priv = dev->priv;
808 int i;
809
810 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
811 return ;
812
813 for (i = 0; i < dev->queues; i++)
814 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
815 priv->tx_stats[i + P54_QUEUE_DATA].limit)
816 ieee80211_wake_queue(dev, i);
817 }
818
819 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
820 {
821 struct p54_common *priv = dev->priv;
822 struct ieee80211_tx_info *info;
823 struct p54_tx_info *range;
824 unsigned long flags;
825 u32 freed = 0, last_addr = priv->rx_start;
826
827 if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
828 return;
829
830 /*
831 * don't try to free an already unlinked skb
832 */
833 if (unlikely((!skb->next) || (!skb->prev)))
834 return;
835
836 spin_lock_irqsave(&priv->tx_queue.lock, flags);
837 info = IEEE80211_SKB_CB(skb);
838 range = (void *)info->rate_driver_data;
839 if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
840 struct ieee80211_tx_info *ni;
841 struct p54_tx_info *mr;
842
843 ni = IEEE80211_SKB_CB(skb->prev);
844 mr = (struct p54_tx_info *)ni->rate_driver_data;
845 last_addr = mr->end_addr;
846 }
847 if (skb->next != (struct sk_buff *)&priv->tx_queue) {
848 struct ieee80211_tx_info *ni;
849 struct p54_tx_info *mr;
850
851 ni = IEEE80211_SKB_CB(skb->next);
852 mr = (struct p54_tx_info *)ni->rate_driver_data;
853 freed = mr->start_addr - last_addr;
854 } else
855 freed = priv->rx_end - last_addr;
856 __skb_unlink(skb, &priv->tx_queue);
857 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
858 dev_kfree_skb_any(skb);
859
860 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
861 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
862 p54_wake_free_queues(dev);
863 }
864 EXPORT_SYMBOL_GPL(p54_free_skb);
865
866 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
867 __le32 req_id)
868 {
869 struct p54_common *priv = dev->priv;
870 struct sk_buff *entry;
871 unsigned long flags;
872
873 spin_lock_irqsave(&priv->tx_queue.lock, flags);
874 entry = priv->tx_queue.next;
875 while (entry != (struct sk_buff *)&priv->tx_queue) {
876 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
877
878 if (hdr->req_id == req_id) {
879 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
880 return entry;
881 }
882 entry = entry->next;
883 }
884 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
885 return NULL;
886 }
887
888 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
889 {
890 struct p54_common *priv = dev->priv;
891 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
892 struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
893 struct sk_buff *entry;
894 u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
895 struct p54_tx_info *range = NULL;
896 u32 freed = 0;
897 u32 last_addr = priv->rx_start;
898 unsigned long flags;
899 int count, idx;
900
901 spin_lock_irqsave(&priv->tx_queue.lock, flags);
902 entry = (struct sk_buff *) priv->tx_queue.next;
903 while (entry != (struct sk_buff *)&priv->tx_queue) {
904 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
905 struct p54_hdr *entry_hdr;
906 struct p54_tx_data *entry_data;
907 unsigned int pad = 0, frame_len;
908
909 range = (void *)info->rate_driver_data;
910 if (range->start_addr != addr) {
911 last_addr = range->end_addr;
912 entry = entry->next;
913 continue;
914 }
915
916 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
917 struct ieee80211_tx_info *ni;
918 struct p54_tx_info *mr;
919
920 ni = IEEE80211_SKB_CB(entry->next);
921 mr = (struct p54_tx_info *)ni->rate_driver_data;
922 freed = mr->start_addr - last_addr;
923 } else
924 freed = priv->rx_end - last_addr;
925
926 last_addr = range->end_addr;
927 __skb_unlink(entry, &priv->tx_queue);
928 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
929
930 frame_len = entry->len;
931 entry_hdr = (struct p54_hdr *) entry->data;
932 entry_data = (struct p54_tx_data *) entry_hdr->data;
933 priv->tx_stats[entry_data->hw_queue].len--;
934 priv->stats.dot11ACKFailureCount += payload->tries - 1;
935
936 /*
937 * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
938 * generated by the driver. Therefore tx_status is bogus
939 * and we don't want to confuse the mac80211 stack.
940 */
941 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
942 if (entry_data->hw_queue == P54_QUEUE_BEACON)
943 priv->cached_beacon = NULL;
944
945 kfree_skb(entry);
946 goto out;
947 }
948
949 /*
950 * Clear manually, ieee80211_tx_info_clear_status would
951 * clear the counts too and we need them.
952 */
953 memset(&info->status.ampdu_ack_len, 0,
954 sizeof(struct ieee80211_tx_info) -
955 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
956 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
957 status.ampdu_ack_len) != 23);
958
959 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
960 pad = entry_data->align[0];
961
962 /* walk through the rates array and adjust the counts */
963 count = payload->tries;
964 for (idx = 0; idx < 4; idx++) {
965 if (count >= info->status.rates[idx].count) {
966 count -= info->status.rates[idx].count;
967 } else if (count > 0) {
968 info->status.rates[idx].count = count;
969 count = 0;
970 } else {
971 info->status.rates[idx].idx = -1;
972 info->status.rates[idx].count = 0;
973 }
974 }
975
976 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
977 (!payload->status))
978 info->flags |= IEEE80211_TX_STAT_ACK;
979 if (payload->status & P54_TX_PSM_CANCELLED)
980 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
981 info->status.ack_signal = p54_rssi_to_dbm(dev,
982 (int)payload->ack_rssi);
983
984 /* Undo all changes to the frame. */
985 switch (entry_data->key_type) {
986 case P54_CRYPTO_TKIPMICHAEL: {
987 u8 *iv = (u8 *)(entry_data->align + pad +
988 entry_data->crypt_offset);
989
990 /* Restore the original TKIP IV. */
991 iv[2] = iv[0];
992 iv[0] = iv[1];
993 iv[1] = (iv[0] | 0x20) & 0x7f; /* WEPSeed - 8.3.2.2 */
994
995 frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
996 break;
997 }
998 case P54_CRYPTO_AESCCMP:
999 frame_len -= 8; /* remove CCMP_MIC */
1000 break;
1001 case P54_CRYPTO_WEP:
1002 frame_len -= 4; /* remove WEP_ICV */
1003 break;
1004 }
1005 skb_trim(entry, frame_len);
1006 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
1007 ieee80211_tx_status_irqsafe(dev, entry);
1008 goto out;
1009 }
1010 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1011
1012 out:
1013 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
1014 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1015 p54_wake_free_queues(dev);
1016 }
1017
1018 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
1019 struct sk_buff *skb)
1020 {
1021 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1022 struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1023 struct p54_common *priv = dev->priv;
1024
1025 if (!priv->eeprom)
1026 return ;
1027
1028 if (priv->fw_var >= 0x509) {
1029 memcpy(priv->eeprom, eeprom->v2.data,
1030 le16_to_cpu(eeprom->v2.len));
1031 } else {
1032 memcpy(priv->eeprom, eeprom->v1.data,
1033 le16_to_cpu(eeprom->v1.len));
1034 }
1035
1036 complete(&priv->eeprom_comp);
1037 }
1038
1039 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1040 {
1041 struct p54_common *priv = dev->priv;
1042 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1043 struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1044 u32 tsf32;
1045
1046 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1047 return ;
1048
1049 tsf32 = le32_to_cpu(stats->tsf32);
1050 if (tsf32 < priv->tsf_low32)
1051 priv->tsf_high32++;
1052 priv->tsf_low32 = tsf32;
1053
1054 priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1055 priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1056 priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1057
1058 priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1059
1060 p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1061 }
1062
1063 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1064 {
1065 struct p54_common *priv = dev->priv;
1066 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1067 struct p54_trap *trap = (struct p54_trap *) hdr->data;
1068 u16 event = le16_to_cpu(trap->event);
1069 u16 freq = le16_to_cpu(trap->frequency);
1070
1071 switch (event) {
1072 case P54_TRAP_BEACON_TX:
1073 break;
1074 case P54_TRAP_RADAR:
1075 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1076 wiphy_name(dev->wiphy), freq);
1077 break;
1078 case P54_TRAP_NO_BEACON:
1079 if (priv->vif)
1080 ieee80211_beacon_loss(priv->vif);
1081 break;
1082 case P54_TRAP_SCAN:
1083 break;
1084 case P54_TRAP_TBTT:
1085 break;
1086 case P54_TRAP_TIMER:
1087 break;
1088 default:
1089 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1090 wiphy_name(dev->wiphy), event, freq);
1091 break;
1092 }
1093 }
1094
1095 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1096 {
1097 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1098
1099 switch (le16_to_cpu(hdr->type)) {
1100 case P54_CONTROL_TYPE_TXDONE:
1101 p54_rx_frame_sent(dev, skb);
1102 break;
1103 case P54_CONTROL_TYPE_TRAP:
1104 p54_rx_trap(dev, skb);
1105 break;
1106 case P54_CONTROL_TYPE_BBP:
1107 break;
1108 case P54_CONTROL_TYPE_STAT_READBACK:
1109 p54_rx_stats(dev, skb);
1110 break;
1111 case P54_CONTROL_TYPE_EEPROM_READBACK:
1112 p54_rx_eeprom_readback(dev, skb);
1113 break;
1114 default:
1115 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1116 wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1117 break;
1118 }
1119
1120 return 0;
1121 }
1122
1123 /* returns zero if skb can be reused */
1124 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1125 {
1126 u16 type = le16_to_cpu(*((__le16 *)skb->data));
1127
1128 if (type & P54_HDR_FLAG_CONTROL)
1129 return p54_rx_control(dev, skb);
1130 else
1131 return p54_rx_data(dev, skb);
1132 }
1133 EXPORT_SYMBOL_GPL(p54_rx);
1134
1135 /*
1136 * So, the firmware is somewhat stupid and doesn't know what places in its
1137 * memory incoming data should go to. By poking around in the firmware, we
1138 * can find some unused memory to upload our packets to. However, data that we
1139 * want the card to TX needs to stay intact until the card has told us that
1140 * it is done with it. This function finds empty places we can upload to and
1141 * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1142 * p54_free_skb frees allocated areas.
1143 */
1144 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1145 struct p54_hdr *data, u32 len)
1146 {
1147 struct p54_common *priv = dev->priv;
1148 struct sk_buff *entry;
1149 struct sk_buff *target_skb = NULL;
1150 struct ieee80211_tx_info *info;
1151 struct p54_tx_info *range;
1152 u32 last_addr = priv->rx_start;
1153 u32 largest_hole = 0;
1154 u32 target_addr = priv->rx_start;
1155 unsigned long flags;
1156 unsigned int left;
1157 len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1158
1159 if (!skb)
1160 return -EINVAL;
1161
1162 spin_lock_irqsave(&priv->tx_queue.lock, flags);
1163
1164 left = skb_queue_len(&priv->tx_queue);
1165 if (unlikely(left >= 28)) {
1166 /*
1167 * The tx_queue is nearly full!
1168 * We have throttle normal data traffic, because we must
1169 * have a few spare slots for control frames left.
1170 */
1171 ieee80211_stop_queues(dev);
1172 queue_delayed_work(dev->workqueue, &priv->work,
1173 msecs_to_jiffies(P54_TX_TIMEOUT));
1174
1175 if (unlikely(left == 32)) {
1176 /*
1177 * The tx_queue is now really full.
1178 *
1179 * TODO: check if the device has crashed and reset it.
1180 */
1181 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1182 return -ENOSPC;
1183 }
1184 }
1185
1186 entry = priv->tx_queue.next;
1187 while (left--) {
1188 u32 hole_size;
1189 info = IEEE80211_SKB_CB(entry);
1190 range = (void *)info->rate_driver_data;
1191 hole_size = range->start_addr - last_addr;
1192 if (!target_skb && hole_size >= len) {
1193 target_skb = entry->prev;
1194 hole_size -= len;
1195 target_addr = last_addr;
1196 }
1197 largest_hole = max(largest_hole, hole_size);
1198 last_addr = range->end_addr;
1199 entry = entry->next;
1200 }
1201 if (!target_skb && priv->rx_end - last_addr >= len) {
1202 target_skb = priv->tx_queue.prev;
1203 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1204 if (!skb_queue_empty(&priv->tx_queue)) {
1205 info = IEEE80211_SKB_CB(target_skb);
1206 range = (void *)info->rate_driver_data;
1207 target_addr = range->end_addr;
1208 }
1209 } else
1210 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1211
1212 if (!target_skb) {
1213 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1214 ieee80211_stop_queues(dev);
1215 return -ENOSPC;
1216 }
1217
1218 info = IEEE80211_SKB_CB(skb);
1219 range = (void *)info->rate_driver_data;
1220 range->start_addr = target_addr;
1221 range->end_addr = target_addr + len;
1222 __skb_queue_after(&priv->tx_queue, target_skb, skb);
1223 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1224
1225 if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1226 48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1227 ieee80211_stop_queues(dev);
1228
1229 data->req_id = cpu_to_le32(target_addr + priv->headroom);
1230 return 0;
1231 }
1232
1233 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1234 u16 payload_len, u16 type, gfp_t memflags)
1235 {
1236 struct p54_common *priv = dev->priv;
1237 struct p54_hdr *hdr;
1238 struct sk_buff *skb;
1239 size_t frame_len = sizeof(*hdr) + payload_len;
1240
1241 if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1242 return NULL;
1243
1244 skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1245 if (!skb)
1246 return NULL;
1247 skb_reserve(skb, priv->tx_hdr_len);
1248
1249 hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1250 hdr->flags = cpu_to_le16(hdr_flags);
1251 hdr->len = cpu_to_le16(payload_len);
1252 hdr->type = cpu_to_le16(type);
1253 hdr->tries = hdr->rts_tries = 0;
1254
1255 if (p54_assign_address(dev, skb, hdr, frame_len)) {
1256 kfree_skb(skb);
1257 return NULL;
1258 }
1259 return skb;
1260 }
1261
1262 int p54_read_eeprom(struct ieee80211_hw *dev)
1263 {
1264 struct p54_common *priv = dev->priv;
1265 struct p54_eeprom_lm86 *eeprom_hdr;
1266 struct sk_buff *skb;
1267 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1268 int ret = -ENOMEM;
1269 void *eeprom = NULL;
1270
1271 maxblocksize = EEPROM_READBACK_LEN;
1272 if (priv->fw_var >= 0x509)
1273 maxblocksize -= 0xc;
1274 else
1275 maxblocksize -= 0x4;
1276
1277 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1278 maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1279 GFP_KERNEL);
1280 if (!skb)
1281 goto free;
1282 priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1283 if (!priv->eeprom)
1284 goto free;
1285 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1286 if (!eeprom)
1287 goto free;
1288
1289 eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1290 sizeof(*eeprom_hdr) + maxblocksize);
1291
1292 while (eeprom_size) {
1293 blocksize = min(eeprom_size, maxblocksize);
1294 if (priv->fw_var < 0x509) {
1295 eeprom_hdr->v1.offset = cpu_to_le16(offset);
1296 eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1297 } else {
1298 eeprom_hdr->v2.offset = cpu_to_le32(offset);
1299 eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1300 eeprom_hdr->v2.magic2 = 0xf;
1301 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1302 }
1303 priv->tx(dev, skb);
1304
1305 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1306 printk(KERN_ERR "%s: device does not respond!\n",
1307 wiphy_name(dev->wiphy));
1308 ret = -EBUSY;
1309 goto free;
1310 }
1311
1312 memcpy(eeprom + offset, priv->eeprom, blocksize);
1313 offset += blocksize;
1314 eeprom_size -= blocksize;
1315 }
1316
1317 ret = p54_parse_eeprom(dev, eeprom, offset);
1318 free:
1319 kfree(priv->eeprom);
1320 priv->eeprom = NULL;
1321 p54_free_skb(dev, skb);
1322 kfree(eeprom);
1323
1324 return ret;
1325 }
1326 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1327
1328 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1329 bool set)
1330 {
1331 struct p54_common *priv = dev->priv;
1332 struct sk_buff *skb;
1333 struct p54_tim *tim;
1334
1335 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1336 P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1337 if (!skb)
1338 return -ENOMEM;
1339
1340 tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1341 tim->count = 1;
1342 tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1343 priv->tx(dev, skb);
1344 return 0;
1345 }
1346
1347 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1348 {
1349 struct p54_common *priv = dev->priv;
1350 struct sk_buff *skb;
1351 struct p54_sta_unlock *sta;
1352
1353 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1354 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1355 if (!skb)
1356 return -ENOMEM;
1357
1358 sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1359 memcpy(sta->addr, addr, ETH_ALEN);
1360 priv->tx(dev, skb);
1361 return 0;
1362 }
1363
1364 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1365 enum sta_notify_cmd notify_cmd,
1366 struct ieee80211_sta *sta)
1367 {
1368 switch (notify_cmd) {
1369 case STA_NOTIFY_ADD:
1370 case STA_NOTIFY_REMOVE:
1371 /*
1372 * Notify the firmware that we don't want or we don't
1373 * need to buffer frames for this station anymore.
1374 */
1375
1376 p54_sta_unlock(dev, sta->addr);
1377 break;
1378 case STA_NOTIFY_AWAKE:
1379 /* update the firmware's filter table */
1380 p54_sta_unlock(dev, sta->addr);
1381 break;
1382 default:
1383 break;
1384 }
1385 }
1386
1387 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1388 {
1389 struct p54_common *priv = dev->priv;
1390 struct sk_buff *skb;
1391 struct p54_hdr *hdr;
1392 struct p54_txcancel *cancel;
1393
1394 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1395 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1396 if (!skb)
1397 return -ENOMEM;
1398
1399 hdr = (void *)entry->data;
1400 cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1401 cancel->req_id = hdr->req_id;
1402 priv->tx(dev, skb);
1403 return 0;
1404 }
1405
1406 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1407 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1408 u16 *flags, u16 *aid)
1409 {
1410 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1411 struct p54_common *priv = dev->priv;
1412 int ret = 1;
1413
1414 switch (priv->mode) {
1415 case NL80211_IFTYPE_MONITOR:
1416 /*
1417 * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1418 * every frame in promiscuous/monitor mode.
1419 * see STSW45x0C LMAC API - page 12.
1420 */
1421 *aid = 0;
1422 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1423 *queue += P54_QUEUE_DATA;
1424 break;
1425 case NL80211_IFTYPE_STATION:
1426 *aid = 1;
1427 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1428 *queue = P54_QUEUE_MGMT;
1429 ret = 0;
1430 } else
1431 *queue += P54_QUEUE_DATA;
1432 break;
1433 case NL80211_IFTYPE_AP:
1434 case NL80211_IFTYPE_ADHOC:
1435 case NL80211_IFTYPE_MESH_POINT:
1436 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1437 *aid = 0;
1438 *queue = P54_QUEUE_CAB;
1439 return 0;
1440 }
1441
1442 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1443 if (ieee80211_is_probe_resp(hdr->frame_control)) {
1444 *aid = 0;
1445 *queue = P54_QUEUE_MGMT;
1446 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1447 P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1448 return 0;
1449 } else if (ieee80211_is_beacon(hdr->frame_control)) {
1450 *aid = 0;
1451
1452 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1453 /*
1454 * Injecting beacons on top of a AP is
1455 * not a good idea... nevertheless,
1456 * it should be doable.
1457 */
1458
1459 *queue += P54_QUEUE_DATA;
1460 return 1;
1461 }
1462
1463 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1464 *queue = P54_QUEUE_BEACON;
1465 *extra_len = IEEE80211_MAX_TIM_LEN;
1466 return 0;
1467 } else {
1468 *queue = P54_QUEUE_MGMT;
1469 ret = 0;
1470 }
1471 } else
1472 *queue += P54_QUEUE_DATA;
1473
1474 if (info->control.sta)
1475 *aid = info->control.sta->aid;
1476 else
1477 *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1478 break;
1479 }
1480 return ret;
1481 }
1482
1483 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1484 {
1485 switch (alg) {
1486 case ALG_WEP:
1487 return P54_CRYPTO_WEP;
1488 case ALG_TKIP:
1489 return P54_CRYPTO_TKIPMICHAEL;
1490 case ALG_CCMP:
1491 return P54_CRYPTO_AESCCMP;
1492 default:
1493 return 0;
1494 }
1495 }
1496
1497 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1498 {
1499 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1500 struct ieee80211_tx_queue_stats *current_queue;
1501 struct p54_common *priv = dev->priv;
1502 struct p54_hdr *hdr;
1503 struct p54_tx_data *txhdr;
1504 size_t padding, len, tim_len = 0;
1505 int i, j, ridx, ret;
1506 u16 hdr_flags = 0, aid = 0;
1507 u8 rate, queue, crypt_offset = 0;
1508 u8 cts_rate = 0x20;
1509 u8 rc_flags;
1510 u8 calculated_tries[4];
1511 u8 nrates = 0, nremaining = 8;
1512
1513 queue = skb_get_queue_mapping(skb);
1514
1515 ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1516 current_queue = &priv->tx_stats[queue];
1517 if (unlikely((current_queue->len > current_queue->limit) && ret))
1518 return NETDEV_TX_BUSY;
1519 current_queue->len++;
1520 current_queue->count++;
1521 if ((current_queue->len == current_queue->limit) && ret)
1522 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1523
1524 padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1525 len = skb->len;
1526
1527 if (info->control.hw_key) {
1528 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1529 if (info->control.hw_key->alg == ALG_TKIP) {
1530 u8 *iv = (u8 *)(skb->data + crypt_offset);
1531 /*
1532 * The firmware excepts that the IV has to have
1533 * this special format
1534 */
1535 iv[1] = iv[0];
1536 iv[0] = iv[2];
1537 iv[2] = 0;
1538 }
1539 }
1540
1541 txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1542 hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1543
1544 if (padding)
1545 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1546 hdr->type = cpu_to_le16(aid);
1547 hdr->rts_tries = info->control.rates[0].count;
1548
1549 /*
1550 * we register the rates in perfect order, and
1551 * RTS/CTS won't happen on 5 GHz
1552 */
1553 cts_rate = info->control.rts_cts_rate_idx;
1554
1555 memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1556
1557 /* see how many rates got used */
1558 for (i = 0; i < 4; i++) {
1559 if (info->control.rates[i].idx < 0)
1560 break;
1561 nrates++;
1562 }
1563
1564 /* limit tries to 8/nrates per rate */
1565 for (i = 0; i < nrates; i++) {
1566 /*
1567 * The magic expression here is equivalent to 8/nrates for
1568 * all values that matter, but avoids division and jumps.
1569 * Note that nrates can only take the values 1 through 4.
1570 */
1571 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1572 info->control.rates[i].count);
1573 nremaining -= calculated_tries[i];
1574 }
1575
1576 /* if there are tries left, distribute from back to front */
1577 for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1578 int tmp = info->control.rates[i].count - calculated_tries[i];
1579
1580 if (tmp <= 0)
1581 continue;
1582 /* RC requested more tries at this rate */
1583
1584 tmp = min_t(int, tmp, nremaining);
1585 calculated_tries[i] += tmp;
1586 nremaining -= tmp;
1587 }
1588
1589 ridx = 0;
1590 for (i = 0; i < nrates && ridx < 8; i++) {
1591 /* we register the rates in perfect order */
1592 rate = info->control.rates[i].idx;
1593 if (info->band == IEEE80211_BAND_5GHZ)
1594 rate += 4;
1595
1596 /* store the count we actually calculated for TX status */
1597 info->control.rates[i].count = calculated_tries[i];
1598
1599 rc_flags = info->control.rates[i].flags;
1600 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1601 rate |= 0x10;
1602 cts_rate |= 0x10;
1603 }
1604 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1605 rate |= 0x40;
1606 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1607 rate |= 0x20;
1608 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1609 txhdr->rateset[ridx] = rate;
1610 ridx++;
1611 }
1612 }
1613
1614 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1615 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1616
1617 /* TODO: enable bursting */
1618 hdr->flags = cpu_to_le16(hdr_flags);
1619 hdr->tries = ridx;
1620 txhdr->rts_rate_idx = 0;
1621 if (info->control.hw_key) {
1622 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1623 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1624 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1625 if (info->control.hw_key->alg == ALG_TKIP) {
1626 if (unlikely(skb_tailroom(skb) < 12))
1627 goto err;
1628 /* reserve space for the MIC key */
1629 len += 8;
1630 memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1631 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1632 }
1633 /* reserve some space for ICV */
1634 len += info->control.hw_key->icv_len;
1635 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1636 info->control.hw_key->icv_len);
1637 } else {
1638 txhdr->key_type = 0;
1639 txhdr->key_len = 0;
1640 }
1641 txhdr->crypt_offset = crypt_offset;
1642 txhdr->hw_queue = queue;
1643 txhdr->backlog = current_queue->len;
1644 memset(txhdr->durations, 0, sizeof(txhdr->durations));
1645 txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1646 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1647 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1648 txhdr->longbow.cts_rate = cts_rate;
1649 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1650 } else {
1651 txhdr->normal.output_power = priv->output_power;
1652 txhdr->normal.cts_rate = cts_rate;
1653 }
1654 if (padding)
1655 txhdr->align[0] = padding;
1656
1657 hdr->len = cpu_to_le16(len);
1658 /* modifies skb->cb and with it info, so must be last! */
1659 if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1660 goto err;
1661 priv->tx(dev, skb);
1662
1663 queue_delayed_work(dev->workqueue, &priv->work,
1664 msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1665
1666 return NETDEV_TX_OK;
1667
1668 err:
1669 skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1670 current_queue->len--;
1671 current_queue->count--;
1672 return NETDEV_TX_BUSY;
1673 }
1674
1675 static int p54_setup_mac(struct ieee80211_hw *dev)
1676 {
1677 struct p54_common *priv = dev->priv;
1678 struct sk_buff *skb;
1679 struct p54_setup_mac *setup;
1680 u16 mode;
1681
1682 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1683 P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1684 if (!skb)
1685 return -ENOMEM;
1686
1687 setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1688 if (dev->conf.radio_enabled) {
1689 switch (priv->mode) {
1690 case NL80211_IFTYPE_STATION:
1691 mode = P54_FILTER_TYPE_STATION;
1692 break;
1693 case NL80211_IFTYPE_AP:
1694 mode = P54_FILTER_TYPE_AP;
1695 break;
1696 case NL80211_IFTYPE_ADHOC:
1697 case NL80211_IFTYPE_MESH_POINT:
1698 mode = P54_FILTER_TYPE_IBSS;
1699 break;
1700 case NL80211_IFTYPE_MONITOR:
1701 mode = P54_FILTER_TYPE_PROMISCUOUS;
1702 break;
1703 default:
1704 mode = P54_FILTER_TYPE_HIBERNATE;
1705 break;
1706 }
1707
1708 /*
1709 * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1710 * STSW45X0C LMAC API - page 12
1711 */
1712 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1713 (priv->filter_flags & FIF_OTHER_BSS)) &&
1714 (mode != P54_FILTER_TYPE_PROMISCUOUS))
1715 mode |= P54_FILTER_TYPE_TRANSPARENT;
1716 } else
1717 mode = P54_FILTER_TYPE_HIBERNATE;
1718
1719 setup->mac_mode = cpu_to_le16(mode);
1720 memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1721 memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1722 setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1723 setup->rx_align = 0;
1724 if (priv->fw_var < 0x500) {
1725 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1726 memset(setup->v1.rts_rates, 0, 8);
1727 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1728 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1729 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1730 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1731 setup->v1.unalloc0 = cpu_to_le16(0);
1732 } else {
1733 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1734 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1735 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1736 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1737 setup->v2.truncate = cpu_to_le16(48896);
1738 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1739 setup->v2.sbss_offset = 0;
1740 setup->v2.mcast_window = 0;
1741 setup->v2.rx_rssi_threshold = 0;
1742 setup->v2.rx_ed_threshold = 0;
1743 setup->v2.ref_clock = cpu_to_le32(644245094);
1744 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1745 setup->v2.osc_start_delay = cpu_to_le16(65535);
1746 }
1747 priv->tx(dev, skb);
1748 return 0;
1749 }
1750
1751 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1752 {
1753 struct p54_common *priv = dev->priv;
1754 struct sk_buff *skb;
1755 struct p54_hdr *hdr;
1756 struct p54_scan_head *head;
1757 struct p54_iq_autocal_entry *iq_autocal;
1758 union p54_scan_body_union *body;
1759 struct p54_scan_tail_rate *rate;
1760 struct pda_rssi_cal_entry *rssi;
1761 unsigned int i;
1762 void *entry;
1763 int band = dev->conf.channel->band;
1764 __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1765
1766 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1767 2 + sizeof(*iq_autocal) + sizeof(*body) +
1768 sizeof(*rate) + 2 * sizeof(*rssi),
1769 P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1770 if (!skb)
1771 return -ENOMEM;
1772
1773 head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1774 memset(head->scan_params, 0, sizeof(head->scan_params));
1775 head->mode = cpu_to_le16(mode);
1776 head->dwell = cpu_to_le16(dwell);
1777 head->freq = freq;
1778
1779 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1780 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1781 *pa_power_points = cpu_to_le16(0x0c);
1782 }
1783
1784 iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1785 for (i = 0; i < priv->iq_autocal_len; i++) {
1786 if (priv->iq_autocal[i].freq != freq)
1787 continue;
1788
1789 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1790 sizeof(struct p54_iq_autocal_entry));
1791 break;
1792 }
1793 if (i == priv->iq_autocal_len)
1794 goto err;
1795
1796 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1797 body = (void *) skb_put(skb, sizeof(body->longbow));
1798 else
1799 body = (void *) skb_put(skb, sizeof(body->normal));
1800
1801 for (i = 0; i < priv->output_limit->entries; i++) {
1802 __le16 *entry_freq = (void *) (priv->output_limit->data +
1803 priv->output_limit->entry_size * i);
1804
1805 if (*entry_freq != freq)
1806 continue;
1807
1808 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1809 memcpy(&body->longbow.power_limits,
1810 (void *) entry_freq + sizeof(__le16),
1811 priv->output_limit->entry_size);
1812 } else {
1813 struct pda_channel_output_limit *limits =
1814 (void *) entry_freq;
1815
1816 body->normal.val_barker = 0x38;
1817 body->normal.val_bpsk = body->normal.dup_bpsk =
1818 limits->val_bpsk;
1819 body->normal.val_qpsk = body->normal.dup_qpsk =
1820 limits->val_qpsk;
1821 body->normal.val_16qam = body->normal.dup_16qam =
1822 limits->val_16qam;
1823 body->normal.val_64qam = body->normal.dup_64qam =
1824 limits->val_64qam;
1825 }
1826 break;
1827 }
1828 if (i == priv->output_limit->entries)
1829 goto err;
1830
1831 entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1832 for (i = 0; i < priv->curve_data->entries; i++) {
1833 if (*((__le16 *)entry) != freq) {
1834 entry += priv->curve_data->entry_size;
1835 continue;
1836 }
1837
1838 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1839 memcpy(&body->longbow.curve_data,
1840 (void *) entry + sizeof(__le16),
1841 priv->curve_data->entry_size);
1842 } else {
1843 struct p54_scan_body *chan = &body->normal;
1844 struct pda_pa_curve_data *curve_data =
1845 (void *) priv->curve_data->data;
1846
1847 entry += sizeof(__le16);
1848 chan->pa_points_per_curve = 8;
1849 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1850 memcpy(chan->curve_data, entry,
1851 sizeof(struct p54_pa_curve_data_sample) *
1852 min((u8)8, curve_data->points_per_channel));
1853 }
1854 break;
1855 }
1856 if (i == priv->curve_data->entries)
1857 goto err;
1858
1859 if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1860 rate = (void *) skb_put(skb, sizeof(*rate));
1861 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1862 for (i = 0; i < sizeof(rate->rts_rates); i++)
1863 rate->rts_rates[i] = i;
1864 }
1865
1866 rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1867 rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1868 rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1869 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1870 /* Longbow frontend needs ever more */
1871 rssi = (void *) skb_put(skb, sizeof(*rssi));
1872 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1873 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1874 }
1875
1876 if (priv->fw_var >= 0x509) {
1877 rate = (void *) skb_put(skb, sizeof(*rate));
1878 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1879 for (i = 0; i < sizeof(rate->rts_rates); i++)
1880 rate->rts_rates[i] = i;
1881 }
1882
1883 hdr = (struct p54_hdr *) skb->data;
1884 hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1885
1886 priv->tx(dev, skb);
1887 return 0;
1888
1889 err:
1890 printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1891 p54_free_skb(dev, skb);
1892 return -EINVAL;
1893 }
1894
1895 static int p54_set_leds(struct ieee80211_hw *dev)
1896 {
1897 struct p54_common *priv = dev->priv;
1898 struct sk_buff *skb;
1899 struct p54_led *led;
1900
1901 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1902 P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1903 if (!skb)
1904 return -ENOMEM;
1905
1906 led = (struct p54_led *) skb_put(skb, sizeof(*led));
1907 led->flags = cpu_to_le16(0x0003);
1908 led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1909 led->delay[0] = cpu_to_le16(1);
1910 led->delay[1] = cpu_to_le16(0);
1911 priv->tx(dev, skb);
1912 return 0;
1913 }
1914
1915 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
1916 do { \
1917 queue.aifs = cpu_to_le16(ai_fs); \
1918 queue.cwmin = cpu_to_le16(cw_min); \
1919 queue.cwmax = cpu_to_le16(cw_max); \
1920 queue.txop = cpu_to_le16(_txop); \
1921 } while(0)
1922
1923 static int p54_set_edcf(struct ieee80211_hw *dev)
1924 {
1925 struct p54_common *priv = dev->priv;
1926 struct sk_buff *skb;
1927 struct p54_edcf *edcf;
1928
1929 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1930 P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1931 if (!skb)
1932 return -ENOMEM;
1933
1934 edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1935 if (priv->use_short_slot) {
1936 edcf->slottime = 9;
1937 edcf->sifs = 0x10;
1938 edcf->eofpad = 0x00;
1939 } else {
1940 edcf->slottime = 20;
1941 edcf->sifs = 0x0a;
1942 edcf->eofpad = 0x06;
1943 }
1944 /* (see prism54/isl_oid.h for further details) */
1945 edcf->frameburst = cpu_to_le16(0);
1946 edcf->round_trip_delay = cpu_to_le16(0);
1947 edcf->flags = 0;
1948 memset(edcf->mapping, 0, sizeof(edcf->mapping));
1949 memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1950 priv->tx(dev, skb);
1951 return 0;
1952 }
1953
1954 static int p54_set_ps(struct ieee80211_hw *dev)
1955 {
1956 struct p54_common *priv = dev->priv;
1957 struct sk_buff *skb;
1958 struct p54_psm *psm;
1959 u16 mode;
1960 int i;
1961
1962 if (dev->conf.flags & IEEE80211_CONF_PS)
1963 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
1964 P54_PSM_CHECKSUM | P54_PSM_MCBC;
1965 else
1966 mode = P54_PSM_CAM;
1967
1968 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1969 P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1970 if (!skb)
1971 return -ENOMEM;
1972
1973 psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1974 psm->mode = cpu_to_le16(mode);
1975 psm->aid = cpu_to_le16(priv->aid);
1976 for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1977 psm->intervals[i].interval =
1978 cpu_to_le16(dev->conf.listen_interval);
1979 psm->intervals[i].periods = cpu_to_le16(1);
1980 }
1981
1982 psm->beacon_rssi_skip_max = 200;
1983 psm->rssi_delta_threshold = 0;
1984 psm->nr = 10;
1985 psm->exclude[0] = 0;
1986
1987 priv->tx(dev, skb);
1988
1989 return 0;
1990 }
1991
1992 static int p54_beacon_tim(struct sk_buff *skb)
1993 {
1994 /*
1995 * the good excuse for this mess is ... the firmware.
1996 * The dummy TIM MUST be at the end of the beacon frame,
1997 * because it'll be overwritten!
1998 */
1999
2000 struct ieee80211_mgmt *mgmt = (void *)skb->data;
2001 u8 *pos, *end;
2002
2003 if (skb->len <= sizeof(mgmt))
2004 return -EINVAL;
2005
2006 pos = (u8 *)mgmt->u.beacon.variable;
2007 end = skb->data + skb->len;
2008 while (pos < end) {
2009 if (pos + 2 + pos[1] > end)
2010 return -EINVAL;
2011
2012 if (pos[0] == WLAN_EID_TIM) {
2013 u8 dtim_len = pos[1];
2014 u8 dtim_period = pos[3];
2015 u8 *next = pos + 2 + dtim_len;
2016
2017 if (dtim_len < 3)
2018 return -EINVAL;
2019
2020 memmove(pos, next, end - next);
2021
2022 if (dtim_len > 3)
2023 skb_trim(skb, skb->len - (dtim_len - 3));
2024
2025 pos = end - (dtim_len + 2);
2026
2027 /* add the dummy at the end */
2028 pos[0] = WLAN_EID_TIM;
2029 pos[1] = 3;
2030 pos[2] = 0;
2031 pos[3] = dtim_period;
2032 pos[4] = 0;
2033 return 0;
2034 }
2035 pos += 2 + pos[1];
2036 }
2037 return 0;
2038 }
2039
2040 static int p54_beacon_update(struct ieee80211_hw *dev,
2041 struct ieee80211_vif *vif)
2042 {
2043 struct p54_common *priv = dev->priv;
2044 struct sk_buff *beacon;
2045 int ret;
2046
2047 if (priv->cached_beacon) {
2048 p54_tx_cancel(dev, priv->cached_beacon);
2049 /* wait for the last beacon the be freed */
2050 msleep(10);
2051 }
2052
2053 beacon = ieee80211_beacon_get(dev, vif);
2054 if (!beacon)
2055 return -ENOMEM;
2056 ret = p54_beacon_tim(beacon);
2057 if (ret)
2058 return ret;
2059 ret = p54_tx(dev, beacon);
2060 if (ret)
2061 return ret;
2062 priv->cached_beacon = beacon;
2063 priv->tsf_high32 = 0;
2064 priv->tsf_low32 = 0;
2065
2066 return 0;
2067 }
2068
2069 static int p54_start(struct ieee80211_hw *dev)
2070 {
2071 struct p54_common *priv = dev->priv;
2072 int err;
2073
2074 mutex_lock(&priv->conf_mutex);
2075 err = priv->open(dev);
2076 if (err)
2077 goto out;
2078 P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2079 P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2080 P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2081 P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2082 err = p54_set_edcf(dev);
2083 if (err)
2084 goto out;
2085
2086 memset(priv->bssid, ~0, ETH_ALEN);
2087 priv->mode = NL80211_IFTYPE_MONITOR;
2088 err = p54_setup_mac(dev);
2089 if (err) {
2090 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2091 goto out;
2092 }
2093
2094 queue_delayed_work(dev->workqueue, &priv->work, 0);
2095
2096 priv->softled_state = 0;
2097 err = p54_set_leds(dev);
2098
2099 out:
2100 mutex_unlock(&priv->conf_mutex);
2101 return err;
2102 }
2103
2104 static void p54_stop(struct ieee80211_hw *dev)
2105 {
2106 struct p54_common *priv = dev->priv;
2107 struct sk_buff *skb;
2108
2109 mutex_lock(&priv->conf_mutex);
2110 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2111 priv->softled_state = 0;
2112 p54_set_leds(dev);
2113
2114 #ifdef CONFIG_P54_LEDS
2115 cancel_delayed_work_sync(&priv->led_work);
2116 #endif /* CONFIG_P54_LEDS */
2117 cancel_delayed_work_sync(&priv->work);
2118 if (priv->cached_beacon)
2119 p54_tx_cancel(dev, priv->cached_beacon);
2120
2121 priv->stop(dev);
2122 while ((skb = skb_dequeue(&priv->tx_queue)))
2123 kfree_skb(skb);
2124 priv->cached_beacon = NULL;
2125 priv->tsf_high32 = priv->tsf_low32 = 0;
2126 mutex_unlock(&priv->conf_mutex);
2127 }
2128
2129 static int p54_add_interface(struct ieee80211_hw *dev,
2130 struct ieee80211_if_init_conf *conf)
2131 {
2132 struct p54_common *priv = dev->priv;
2133
2134 mutex_lock(&priv->conf_mutex);
2135 if (priv->mode != NL80211_IFTYPE_MONITOR) {
2136 mutex_unlock(&priv->conf_mutex);
2137 return -EOPNOTSUPP;
2138 }
2139
2140 priv->vif = conf->vif;
2141
2142 switch (conf->type) {
2143 case NL80211_IFTYPE_STATION:
2144 case NL80211_IFTYPE_ADHOC:
2145 case NL80211_IFTYPE_AP:
2146 case NL80211_IFTYPE_MESH_POINT:
2147 priv->mode = conf->type;
2148 break;
2149 default:
2150 mutex_unlock(&priv->conf_mutex);
2151 return -EOPNOTSUPP;
2152 }
2153
2154 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2155 p54_setup_mac(dev);
2156 mutex_unlock(&priv->conf_mutex);
2157 return 0;
2158 }
2159
2160 static void p54_remove_interface(struct ieee80211_hw *dev,
2161 struct ieee80211_if_init_conf *conf)
2162 {
2163 struct p54_common *priv = dev->priv;
2164
2165 mutex_lock(&priv->conf_mutex);
2166 priv->vif = NULL;
2167 if (priv->cached_beacon)
2168 p54_tx_cancel(dev, priv->cached_beacon);
2169 priv->mode = NL80211_IFTYPE_MONITOR;
2170 memset(priv->mac_addr, 0, ETH_ALEN);
2171 memset(priv->bssid, 0, ETH_ALEN);
2172 p54_setup_mac(dev);
2173 mutex_unlock(&priv->conf_mutex);
2174 }
2175
2176 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2177 {
2178 int ret = 0;
2179 struct p54_common *priv = dev->priv;
2180 struct ieee80211_conf *conf = &dev->conf;
2181
2182 mutex_lock(&priv->conf_mutex);
2183 if (changed & IEEE80211_CONF_CHANGE_POWER)
2184 priv->output_power = conf->power_level << 2;
2185 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2186 ret = p54_setup_mac(dev);
2187 if (ret)
2188 goto out;
2189 }
2190 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2191 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2192 if (ret)
2193 goto out;
2194 }
2195 if (changed & IEEE80211_CONF_CHANGE_PS) {
2196 ret = p54_set_ps(dev);
2197 if (ret)
2198 goto out;
2199 }
2200
2201 out:
2202 mutex_unlock(&priv->conf_mutex);
2203 return ret;
2204 }
2205
2206 static int p54_config_interface(struct ieee80211_hw *dev,
2207 struct ieee80211_vif *vif,
2208 struct ieee80211_if_conf *conf)
2209 {
2210 struct p54_common *priv = dev->priv;
2211 int ret = 0;
2212
2213 mutex_lock(&priv->conf_mutex);
2214 if (conf->changed & IEEE80211_IFCC_BSSID) {
2215 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2216 ret = p54_setup_mac(dev);
2217 if (ret)
2218 goto out;
2219 }
2220
2221 if (conf->changed & IEEE80211_IFCC_BEACON) {
2222 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2223 if (ret)
2224 goto out;
2225 ret = p54_setup_mac(dev);
2226 if (ret)
2227 goto out;
2228 ret = p54_beacon_update(dev, vif);
2229 if (ret)
2230 goto out;
2231 ret = p54_set_edcf(dev);
2232 if (ret)
2233 goto out;
2234 }
2235
2236 out:
2237 mutex_unlock(&priv->conf_mutex);
2238 return ret;
2239 }
2240
2241 static void p54_configure_filter(struct ieee80211_hw *dev,
2242 unsigned int changed_flags,
2243 unsigned int *total_flags,
2244 int mc_count, struct dev_mc_list *mclist)
2245 {
2246 struct p54_common *priv = dev->priv;
2247
2248 *total_flags &= FIF_PROMISC_IN_BSS |
2249 FIF_OTHER_BSS;
2250
2251 priv->filter_flags = *total_flags;
2252
2253 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2254 p54_setup_mac(dev);
2255 }
2256
2257 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2258 const struct ieee80211_tx_queue_params *params)
2259 {
2260 struct p54_common *priv = dev->priv;
2261 int ret;
2262
2263 mutex_lock(&priv->conf_mutex);
2264 if ((params) && !(queue > 4)) {
2265 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2266 params->cw_min, params->cw_max, params->txop);
2267 ret = p54_set_edcf(dev);
2268 } else
2269 ret = -EINVAL;
2270 mutex_unlock(&priv->conf_mutex);
2271 return ret;
2272 }
2273
2274 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2275 {
2276 struct p54_common *priv = dev->priv;
2277 struct sk_buff *skb;
2278 struct p54_xbow_synth *xbow;
2279
2280 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2281 P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2282 if (!skb)
2283 return -ENOMEM;
2284
2285 xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2286 xbow->magic1 = cpu_to_le16(0x1);
2287 xbow->magic2 = cpu_to_le16(0x2);
2288 xbow->freq = cpu_to_le16(5390);
2289 memset(xbow->padding, 0, sizeof(xbow->padding));
2290 priv->tx(dev, skb);
2291 return 0;
2292 }
2293
2294 static void p54_work(struct work_struct *work)
2295 {
2296 struct p54_common *priv = container_of(work, struct p54_common,
2297 work.work);
2298 struct ieee80211_hw *dev = priv->hw;
2299 struct sk_buff *skb;
2300
2301 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2302 return ;
2303
2304 /*
2305 * TODO: walk through tx_queue and do the following tasks
2306 * 1. initiate bursts.
2307 * 2. cancel stuck frames / reset the device if necessary.
2308 */
2309
2310 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2311 sizeof(struct p54_statistics),
2312 P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2313 if (!skb)
2314 return ;
2315
2316 priv->tx(dev, skb);
2317 }
2318
2319 static int p54_get_stats(struct ieee80211_hw *dev,
2320 struct ieee80211_low_level_stats *stats)
2321 {
2322 struct p54_common *priv = dev->priv;
2323
2324 memcpy(stats, &priv->stats, sizeof(*stats));
2325 return 0;
2326 }
2327
2328 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2329 struct ieee80211_tx_queue_stats *stats)
2330 {
2331 struct p54_common *priv = dev->priv;
2332
2333 memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2334 sizeof(stats[0]) * dev->queues);
2335 return 0;
2336 }
2337
2338 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2339 struct ieee80211_vif *vif,
2340 struct ieee80211_bss_conf *info,
2341 u32 changed)
2342 {
2343 struct p54_common *priv = dev->priv;
2344
2345 if (changed & BSS_CHANGED_ERP_SLOT) {
2346 priv->use_short_slot = info->use_short_slot;
2347 p54_set_edcf(dev);
2348 }
2349 if (changed & BSS_CHANGED_BASIC_RATES) {
2350 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2351 priv->basic_rate_mask = (info->basic_rates << 4);
2352 else
2353 priv->basic_rate_mask = info->basic_rates;
2354 p54_setup_mac(dev);
2355 if (priv->fw_var >= 0x500)
2356 p54_scan(dev, P54_SCAN_EXIT, 0);
2357 }
2358 if (changed & BSS_CHANGED_ASSOC) {
2359 if (info->assoc) {
2360 priv->aid = info->aid;
2361 priv->wakeup_timer = info->beacon_int *
2362 info->dtim_period * 5;
2363 p54_setup_mac(dev);
2364 }
2365 }
2366
2367 }
2368
2369 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2370 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2371 struct ieee80211_key_conf *key)
2372 {
2373 struct p54_common *priv = dev->priv;
2374 struct sk_buff *skb;
2375 struct p54_keycache *rxkey;
2376 int slot, ret = 0;
2377 u8 algo = 0;
2378
2379 if (modparam_nohwcrypt)
2380 return -EOPNOTSUPP;
2381
2382 mutex_lock(&priv->conf_mutex);
2383 if (cmd == SET_KEY) {
2384 switch (key->alg) {
2385 case ALG_TKIP:
2386 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2387 BR_DESC_PRIV_CAP_TKIP))) {
2388 ret = -EOPNOTSUPP;
2389 goto out_unlock;
2390 }
2391 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2392 algo = P54_CRYPTO_TKIPMICHAEL;
2393 break;
2394 case ALG_WEP:
2395 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
2396 ret = -EOPNOTSUPP;
2397 goto out_unlock;
2398 }
2399 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2400 algo = P54_CRYPTO_WEP;
2401 break;
2402 case ALG_CCMP:
2403 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
2404 ret = -EOPNOTSUPP;
2405 goto out_unlock;
2406 }
2407 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2408 algo = P54_CRYPTO_AESCCMP;
2409 break;
2410 default:
2411 ret = -EOPNOTSUPP;
2412 goto out_unlock;
2413 }
2414 slot = bitmap_find_free_region(priv->used_rxkeys,
2415 priv->rx_keycache_size, 0);
2416
2417 if (slot < 0) {
2418 /*
2419 * The device supports the choosen algorithm, but the
2420 * firmware does not provide enough key slots to store
2421 * all of them.
2422 * But encryption offload for outgoing frames is always
2423 * possible, so we just pretend that the upload was
2424 * successful and do the decryption in software.
2425 */
2426
2427 /* mark the key as invalid. */
2428 key->hw_key_idx = 0xff;
2429 goto out_unlock;
2430 }
2431 } else {
2432 slot = key->hw_key_idx;
2433
2434 if (slot == 0xff) {
2435 /* This key was not uploaded into the rx key cache. */
2436
2437 goto out_unlock;
2438 }
2439
2440 bitmap_release_region(priv->used_rxkeys, slot, 0);
2441 algo = 0;
2442 }
2443
2444 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2445 P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
2446 if (!skb) {
2447 bitmap_release_region(priv->used_rxkeys, slot, 0);
2448 ret = -ENOSPC;
2449 goto out_unlock;
2450 }
2451
2452 rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2453 rxkey->entry = slot;
2454 rxkey->key_id = key->keyidx;
2455 rxkey->key_type = algo;
2456 if (sta)
2457 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2458 else
2459 memset(rxkey->mac, ~0, ETH_ALEN);
2460 if (key->alg != ALG_TKIP) {
2461 rxkey->key_len = min((u8)16, key->keylen);
2462 memcpy(rxkey->key, key->key, rxkey->key_len);
2463 } else {
2464 rxkey->key_len = 24;
2465 memcpy(rxkey->key, key->key, 16);
2466 memcpy(&(rxkey->key[16]), &(key->key
2467 [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2468 }
2469
2470 priv->tx(dev, skb);
2471 key->hw_key_idx = slot;
2472
2473 out_unlock:
2474 mutex_unlock(&priv->conf_mutex);
2475 return ret;
2476 }
2477
2478 #ifdef CONFIG_P54_LEDS
2479 static void p54_update_leds(struct work_struct *work)
2480 {
2481 struct p54_common *priv = container_of(work, struct p54_common,
2482 led_work.work);
2483 int err, i, tmp, blink_delay = 400;
2484 bool rerun = false;
2485
2486 /* Don't toggle the LED, when the device is down. */
2487 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2488 return ;
2489
2490 for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2491 if (priv->leds[i].toggled) {
2492 priv->softled_state |= BIT(i);
2493
2494 tmp = 70 + 200 / (priv->leds[i].toggled);
2495 if (tmp < blink_delay)
2496 blink_delay = tmp;
2497
2498 if (priv->leds[i].led_dev.brightness == LED_OFF)
2499 rerun = true;
2500
2501 priv->leds[i].toggled =
2502 !!priv->leds[i].led_dev.brightness;
2503 } else
2504 priv->softled_state &= ~BIT(i);
2505
2506 err = p54_set_leds(priv->hw);
2507 if (err && net_ratelimit())
2508 printk(KERN_ERR "%s: failed to update LEDs.\n",
2509 wiphy_name(priv->hw->wiphy));
2510
2511 if (rerun)
2512 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2513 msecs_to_jiffies(blink_delay));
2514 }
2515
2516 static void p54_led_brightness_set(struct led_classdev *led_dev,
2517 enum led_brightness brightness)
2518 {
2519 struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2520 led_dev);
2521 struct ieee80211_hw *dev = led->hw_dev;
2522 struct p54_common *priv = dev->priv;
2523
2524 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2525 return ;
2526
2527 if (brightness) {
2528 led->toggled++;
2529 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2530 HZ/10);
2531 }
2532 }
2533
2534 static int p54_register_led(struct ieee80211_hw *dev,
2535 unsigned int led_index,
2536 char *name, char *trigger)
2537 {
2538 struct p54_common *priv = dev->priv;
2539 struct p54_led_dev *led = &priv->leds[led_index];
2540 int err;
2541
2542 if (led->registered)
2543 return -EEXIST;
2544
2545 snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2546 wiphy_name(dev->wiphy), name);
2547 led->hw_dev = dev;
2548 led->index = led_index;
2549 led->led_dev.name = led->name;
2550 led->led_dev.default_trigger = trigger;
2551 led->led_dev.brightness_set = p54_led_brightness_set;
2552
2553 err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2554 if (err)
2555 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2556 wiphy_name(dev->wiphy), name);
2557 else
2558 led->registered = 1;
2559
2560 return err;
2561 }
2562
2563 static int p54_init_leds(struct ieee80211_hw *dev)
2564 {
2565 struct p54_common *priv = dev->priv;
2566 int err;
2567
2568 /*
2569 * TODO:
2570 * Figure out if the EEPROM contains some hints about the number
2571 * of available/programmable LEDs of the device.
2572 */
2573
2574 INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
2575
2576 err = p54_register_led(dev, 0, "assoc",
2577 ieee80211_get_assoc_led_name(dev));
2578 if (err)
2579 return err;
2580
2581 err = p54_register_led(dev, 1, "tx",
2582 ieee80211_get_tx_led_name(dev));
2583 if (err)
2584 return err;
2585
2586 err = p54_register_led(dev, 2, "rx",
2587 ieee80211_get_rx_led_name(dev));
2588 if (err)
2589 return err;
2590
2591 err = p54_register_led(dev, 3, "radio",
2592 ieee80211_get_radio_led_name(dev));
2593 if (err)
2594 return err;
2595
2596 err = p54_set_leds(dev);
2597 return err;
2598 }
2599
2600 static void p54_unregister_leds(struct ieee80211_hw *dev)
2601 {
2602 struct p54_common *priv = dev->priv;
2603 int i;
2604
2605 for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2606 if (priv->leds[i].registered)
2607 led_classdev_unregister(&priv->leds[i].led_dev);
2608 }
2609 #endif /* CONFIG_P54_LEDS */
2610
2611 static const struct ieee80211_ops p54_ops = {
2612 .tx = p54_tx,
2613 .start = p54_start,
2614 .stop = p54_stop,
2615 .add_interface = p54_add_interface,
2616 .remove_interface = p54_remove_interface,
2617 .set_tim = p54_set_tim,
2618 .sta_notify = p54_sta_notify,
2619 .set_key = p54_set_key,
2620 .config = p54_config,
2621 .config_interface = p54_config_interface,
2622 .bss_info_changed = p54_bss_info_changed,
2623 .configure_filter = p54_configure_filter,
2624 .conf_tx = p54_conf_tx,
2625 .get_stats = p54_get_stats,
2626 .get_tx_stats = p54_get_tx_stats
2627 };
2628
2629 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2630 {
2631 struct ieee80211_hw *dev;
2632 struct p54_common *priv;
2633
2634 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2635 if (!dev)
2636 return NULL;
2637
2638 priv = dev->priv;
2639 priv->hw = dev;
2640 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2641 priv->basic_rate_mask = 0x15f;
2642 skb_queue_head_init(&priv->tx_queue);
2643 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2644 IEEE80211_HW_SIGNAL_DBM |
2645 IEEE80211_HW_NOISE_DBM |
2646 IEEE80211_HW_BEACON_FILTER;
2647
2648 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2649 BIT(NL80211_IFTYPE_ADHOC) |
2650 BIT(NL80211_IFTYPE_AP) |
2651 BIT(NL80211_IFTYPE_MESH_POINT);
2652
2653 dev->channel_change_time = 1000; /* TODO: find actual value */
2654 priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2655 priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2656 priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2657 priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2658 priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2659 dev->queues = 1;
2660 priv->noise = -94;
2661 /*
2662 * We support at most 8 tries no matter which rate they're at,
2663 * we cannot support max_rates * max_rate_tries as we set it
2664 * here, but setting it correctly to 4/2 or so would limit us
2665 * artificially if the RC algorithm wants just two rates, so
2666 * let's say 4/7, we'll redistribute it at TX time, see the
2667 * comments there.
2668 */
2669 dev->max_rates = 4;
2670 dev->max_rate_tries = 7;
2671 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2672 sizeof(struct p54_tx_data);
2673
2674 mutex_init(&priv->conf_mutex);
2675 init_completion(&priv->eeprom_comp);
2676 INIT_DELAYED_WORK(&priv->work, p54_work);
2677
2678 return dev;
2679 }
2680 EXPORT_SYMBOL_GPL(p54_init_common);
2681
2682 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2683 {
2684 int err;
2685
2686 err = ieee80211_register_hw(dev);
2687 if (err) {
2688 dev_err(pdev, "Cannot register device (%d).\n", err);
2689 return err;
2690 }
2691
2692 #ifdef CONFIG_P54_LEDS
2693 err = p54_init_leds(dev);
2694 if (err)
2695 return err;
2696 #endif /* CONFIG_P54_LEDS */
2697
2698 dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2699 return 0;
2700 }
2701 EXPORT_SYMBOL_GPL(p54_register_common);
2702
2703 void p54_free_common(struct ieee80211_hw *dev)
2704 {
2705 struct p54_common *priv = dev->priv;
2706 kfree(priv->iq_autocal);
2707 kfree(priv->output_limit);
2708 kfree(priv->curve_data);
2709 kfree(priv->used_rxkeys);
2710
2711 #ifdef CONFIG_P54_LEDS
2712 p54_unregister_leds(dev);
2713 #endif /* CONFIG_P54_LEDS */
2714 }
2715 EXPORT_SYMBOL_GPL(p54_free_common);
2716
2717 static int __init p54_init(void)
2718 {
2719 return 0;
2720 }
2721
2722 static void __exit p54_exit(void)
2723 {
2724 }
2725
2726 module_init(p54_init);
2727 module_exit(p54_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree