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mac80211: clean up set_key callback
[linux-2.6/mini2440.git] / drivers / net / wireless / p54 / p54common.c
blob0907e6f246e69f516d97c205ce73ad584626862d
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
25 #include "p54.h"
26 #include "p54common.h"
27
28 static int modparam_nohwcrypt;
29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
32 MODULE_DESCRIPTION("Softmac Prism54 common code");
33 MODULE_LICENSE("GPL");
34 MODULE_ALIAS("prism54common");
35
36 static struct ieee80211_rate p54_bgrates[] = {
37 { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
38 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
39 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
40 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
41 { .bitrate = 60, .hw_value = 4, },
42 { .bitrate = 90, .hw_value = 5, },
43 { .bitrate = 120, .hw_value = 6, },
44 { .bitrate = 180, .hw_value = 7, },
45 { .bitrate = 240, .hw_value = 8, },
46 { .bitrate = 360, .hw_value = 9, },
47 { .bitrate = 480, .hw_value = 10, },
48 { .bitrate = 540, .hw_value = 11, },
49 };
50
51 static struct ieee80211_channel p54_bgchannels[] = {
52 { .center_freq = 2412, .hw_value = 1, },
53 { .center_freq = 2417, .hw_value = 2, },
54 { .center_freq = 2422, .hw_value = 3, },
55 { .center_freq = 2427, .hw_value = 4, },
56 { .center_freq = 2432, .hw_value = 5, },
57 { .center_freq = 2437, .hw_value = 6, },
58 { .center_freq = 2442, .hw_value = 7, },
59 { .center_freq = 2447, .hw_value = 8, },
60 { .center_freq = 2452, .hw_value = 9, },
61 { .center_freq = 2457, .hw_value = 10, },
62 { .center_freq = 2462, .hw_value = 11, },
63 { .center_freq = 2467, .hw_value = 12, },
64 { .center_freq = 2472, .hw_value = 13, },
65 { .center_freq = 2484, .hw_value = 14, },
66 };
67
68 static struct ieee80211_supported_band band_2GHz = {
69 .channels = p54_bgchannels,
70 .n_channels = ARRAY_SIZE(p54_bgchannels),
71 .bitrates = p54_bgrates,
72 .n_bitrates = ARRAY_SIZE(p54_bgrates),
73 };
74
75 static struct ieee80211_rate p54_arates[] = {
76 { .bitrate = 60, .hw_value = 4, },
77 { .bitrate = 90, .hw_value = 5, },
78 { .bitrate = 120, .hw_value = 6, },
79 { .bitrate = 180, .hw_value = 7, },
80 { .bitrate = 240, .hw_value = 8, },
81 { .bitrate = 360, .hw_value = 9, },
82 { .bitrate = 480, .hw_value = 10, },
83 { .bitrate = 540, .hw_value = 11, },
84 };
85
86 static struct ieee80211_channel p54_achannels[] = {
87 { .center_freq = 4920 },
88 { .center_freq = 4940 },
89 { .center_freq = 4960 },
90 { .center_freq = 4980 },
91 { .center_freq = 5040 },
92 { .center_freq = 5060 },
93 { .center_freq = 5080 },
94 { .center_freq = 5170 },
95 { .center_freq = 5180 },
96 { .center_freq = 5190 },
97 { .center_freq = 5200 },
98 { .center_freq = 5210 },
99 { .center_freq = 5220 },
100 { .center_freq = 5230 },
101 { .center_freq = 5240 },
102 { .center_freq = 5260 },
103 { .center_freq = 5280 },
104 { .center_freq = 5300 },
105 { .center_freq = 5320 },
106 { .center_freq = 5500 },
107 { .center_freq = 5520 },
108 { .center_freq = 5540 },
109 { .center_freq = 5560 },
110 { .center_freq = 5580 },
111 { .center_freq = 5600 },
112 { .center_freq = 5620 },
113 { .center_freq = 5640 },
114 { .center_freq = 5660 },
115 { .center_freq = 5680 },
116 { .center_freq = 5700 },
117 { .center_freq = 5745 },
118 { .center_freq = 5765 },
119 { .center_freq = 5785 },
120 { .center_freq = 5805 },
121 { .center_freq = 5825 },
122 };
123
124 static struct ieee80211_supported_band band_5GHz = {
125 .channels = p54_achannels,
126 .n_channels = ARRAY_SIZE(p54_achannels),
127 .bitrates = p54_arates,
128 .n_bitrates = ARRAY_SIZE(p54_arates),
129 };
130
131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
132 {
133 struct p54_common *priv = dev->priv;
134 struct bootrec_exp_if *exp_if;
135 struct bootrec *bootrec;
136 u32 *data = (u32 *)fw->data;
137 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
138 u8 *fw_version = NULL;
139 size_t len;
140 int i;
141 int maxlen;
142
143 if (priv->rx_start)
144 return 0;
145
146 while (data < end_data && *data)
147 data++;
148
149 while (data < end_data && !*data)
150 data++;
151
152 bootrec = (struct bootrec *) data;
153
154 while (bootrec->data <= end_data &&
155 (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
156 u32 code = le32_to_cpu(bootrec->code);
157 switch (code) {
158 case BR_CODE_COMPONENT_ID:
159 priv->fw_interface = be32_to_cpup((__be32 *)
160 bootrec->data);
161 switch (priv->fw_interface) {
162 case FW_LM86:
163 case FW_LM20:
164 case FW_LM87: {
165 char *iftype = (char *)bootrec->data;
166 printk(KERN_INFO "%s: p54 detected a LM%c%c "
167 "firmware\n",
168 wiphy_name(dev->wiphy),
169 iftype[2], iftype[3]);
170 break;
171 }
172 case FW_FMAC:
173 default:
174 printk(KERN_ERR "%s: unsupported firmware\n",
175 wiphy_name(dev->wiphy));
176 return -ENODEV;
177 }
178 break;
179 case BR_CODE_COMPONENT_VERSION:
180 /* 24 bytes should be enough for all firmwares */
181 if (strnlen((unsigned char*)bootrec->data, 24) < 24)
182 fw_version = (unsigned char*)bootrec->data;
183 break;
184 case BR_CODE_DESCR: {
185 struct bootrec_desc *desc =
186 (struct bootrec_desc *)bootrec->data;
187 priv->rx_start = le32_to_cpu(desc->rx_start);
188 /* FIXME add sanity checking */
189 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
190 priv->headroom = desc->headroom;
191 priv->tailroom = desc->tailroom;
192 priv->privacy_caps = desc->privacy_caps;
193 priv->rx_keycache_size = desc->rx_keycache_size;
194 if (le32_to_cpu(bootrec->len) == 11)
195 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
196 else
197 priv->rx_mtu = (size_t)
198 0x620 - priv->tx_hdr_len;
199 maxlen = priv->tx_hdr_len + /* USB devices */
200 sizeof(struct p54_rx_data) +
201 4 + /* rx alignment */
202 IEEE80211_MAX_FRAG_THRESHOLD;
203 if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
204 printk(KERN_INFO "p54: rx_mtu reduced from %d "
205 "to %d\n", priv->rx_mtu,
206 maxlen);
207 priv->rx_mtu = maxlen;
208 }
209 break;
210 }
211 case BR_CODE_EXPOSED_IF:
212 exp_if = (struct bootrec_exp_if *) bootrec->data;
213 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
214 if (exp_if[i].if_id == cpu_to_le16(0x1a))
215 priv->fw_var = le16_to_cpu(exp_if[i].variant);
216 break;
217 case BR_CODE_DEPENDENT_IF:
218 break;
219 case BR_CODE_END_OF_BRA:
220 case LEGACY_BR_CODE_END_OF_BRA:
221 end_data = NULL;
222 break;
223 default:
224 break;
225 }
226 bootrec = (struct bootrec *)&bootrec->data[len];
227 }
228
229 if (fw_version)
230 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
231 wiphy_name(dev->wiphy), fw_version,
232 priv->fw_var >> 8, priv->fw_var & 0xff);
233
234 if (priv->fw_var < 0x500)
235 printk(KERN_INFO "%s: you are using an obsolete firmware. "
236 "visit http://wireless.kernel.org/en/users/Drivers/p54 "
237 "and grab one for \"kernel >= 2.6.28\"!\n",
238 wiphy_name(dev->wiphy));
239
240 if (priv->fw_var >= 0x300) {
241 /* Firmware supports QoS, use it! */
242 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
243 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
244 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
245 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
246 dev->queues = P54_QUEUE_AC_NUM;
247 }
248
249 if (!modparam_nohwcrypt)
250 printk(KERN_INFO "%s: cryptographic accelerator "
251 "WEP:%s, TKIP:%s, CCMP:%s\n",
252 wiphy_name(dev->wiphy),
253 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
254 "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
255 BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
256 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
257 "YES" : "no");
258
259 return 0;
260 }
261 EXPORT_SYMBOL_GPL(p54_parse_firmware);
262
263 static int p54_convert_rev0(struct ieee80211_hw *dev,
264 struct pda_pa_curve_data *curve_data)
265 {
266 struct p54_common *priv = dev->priv;
267 struct p54_pa_curve_data_sample *dst;
268 struct pda_pa_curve_data_sample_rev0 *src;
269 size_t cd_len = sizeof(*curve_data) +
270 (curve_data->points_per_channel*sizeof(*dst) + 2) *
271 curve_data->channels;
272 unsigned int i, j;
273 void *source, *target;
274
275 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
276 if (!priv->curve_data)
277 return -ENOMEM;
278
279 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
280 source = curve_data->data;
281 target = priv->curve_data->data;
282 for (i = 0; i < curve_data->channels; i++) {
283 __le16 *freq = source;
284 source += sizeof(__le16);
285 *((__le16 *)target) = *freq;
286 target += sizeof(__le16);
287 for (j = 0; j < curve_data->points_per_channel; j++) {
288 dst = target;
289 src = source;
290
291 dst->rf_power = src->rf_power;
292 dst->pa_detector = src->pa_detector;
293 dst->data_64qam = src->pcv;
294 /* "invent" the points for the other modulations */
295 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
296 dst->data_16qam = SUB(src->pcv, 12);
297 dst->data_qpsk = SUB(dst->data_16qam, 12);
298 dst->data_bpsk = SUB(dst->data_qpsk, 12);
299 dst->data_barker = SUB(dst->data_bpsk, 14);
300 #undef SUB
301 target += sizeof(*dst);
302 source += sizeof(*src);
303 }
304 }
305
306 return 0;
307 }
308
309 static int p54_convert_rev1(struct ieee80211_hw *dev,
310 struct pda_pa_curve_data *curve_data)
311 {
312 struct p54_common *priv = dev->priv;
313 struct p54_pa_curve_data_sample *dst;
314 struct pda_pa_curve_data_sample_rev1 *src;
315 size_t cd_len = sizeof(*curve_data) +
316 (curve_data->points_per_channel*sizeof(*dst) + 2) *
317 curve_data->channels;
318 unsigned int i, j;
319 void *source, *target;
320
321 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
322 if (!priv->curve_data)
323 return -ENOMEM;
324
325 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
326 source = curve_data->data;
327 target = priv->curve_data->data;
328 for (i = 0; i < curve_data->channels; i++) {
329 __le16 *freq = source;
330 source += sizeof(__le16);
331 *((__le16 *)target) = *freq;
332 target += sizeof(__le16);
333 for (j = 0; j < curve_data->points_per_channel; j++) {
334 memcpy(target, source, sizeof(*src));
335
336 target += sizeof(*dst);
337 source += sizeof(*src);
338 }
339 source++;
340 }
341
342 return 0;
343 }
344
345 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
346 "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
347 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
348
349 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
350 u16 type)
351 {
352 struct p54_common *priv = dev->priv;
353 int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
354 int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
355 int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
356 int i;
357
358 if (len != (entry_size * num_entries)) {
359 printk(KERN_ERR "%s: unknown rssi calibration data packing "
360 " type:(%x) len:%d.\n",
361 wiphy_name(dev->wiphy), type, len);
362
363 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
364 data, len);
365
366 printk(KERN_ERR "%s: please report this issue.\n",
367 wiphy_name(dev->wiphy));
368 return;
369 }
370
371 for (i = 0; i < num_entries; i++) {
372 struct pda_rssi_cal_entry *cal = data +
373 (offset + i * entry_size);
374 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
375 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
376 }
377 }
378
379 static void p54_parse_default_country(struct ieee80211_hw *dev,
380 void *data, int len)
381 {
382 struct pda_country *country;
383
384 if (len != sizeof(*country)) {
385 printk(KERN_ERR "%s: found possible invalid default country "
386 "eeprom entry. (entry size: %d)\n",
387 wiphy_name(dev->wiphy), len);
388
389 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
390 data, len);
391
392 printk(KERN_ERR "%s: please report this issue.\n",
393 wiphy_name(dev->wiphy));
394 return;
395 }
396
397 country = (struct pda_country *) data;
398 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
399 regulatory_hint(dev->wiphy, country->alpha2);
400 else {
401 /* TODO:
402 * write a shared/common function that converts
403 * "Regulatory domain codes" (802.11-2007 14.8.2.2)
404 * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
405 */
406 }
407 }
408
409 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
410 {
411 struct p54_common *priv = dev->priv;
412 struct eeprom_pda_wrap *wrap = NULL;
413 struct pda_entry *entry;
414 unsigned int data_len, entry_len;
415 void *tmp;
416 int err;
417 u8 *end = (u8 *)eeprom + len;
418 u16 synth = 0;
419
420 wrap = (struct eeprom_pda_wrap *) eeprom;
421 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
422
423 /* verify that at least the entry length/code fits */
424 while ((u8 *)entry <= end - sizeof(*entry)) {
425 entry_len = le16_to_cpu(entry->len);
426 data_len = ((entry_len - 1) << 1);
427
428 /* abort if entry exceeds whole structure */
429 if ((u8 *)entry + sizeof(*entry) + data_len > end)
430 break;
431
432 switch (le16_to_cpu(entry->code)) {
433 case PDR_MAC_ADDRESS:
434 SET_IEEE80211_PERM_ADDR(dev, entry->data);
435 break;
436 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
437 if (data_len < 2) {
438 err = -EINVAL;
439 goto err;
440 }
441
442 if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
443 err = -EINVAL;
444 goto err;
445 }
446
447 priv->output_limit = kmalloc(entry->data[1] *
448 sizeof(*priv->output_limit), GFP_KERNEL);
449
450 if (!priv->output_limit) {
451 err = -ENOMEM;
452 goto err;
453 }
454
455 memcpy(priv->output_limit, &entry->data[2],
456 entry->data[1]*sizeof(*priv->output_limit));
457 priv->output_limit_len = entry->data[1];
458 break;
459 case PDR_PRISM_PA_CAL_CURVE_DATA: {
460 struct pda_pa_curve_data *curve_data =
461 (struct pda_pa_curve_data *)entry->data;
462 if (data_len < sizeof(*curve_data)) {
463 err = -EINVAL;
464 goto err;
465 }
466
467 switch (curve_data->cal_method_rev) {
468 case 0:
469 err = p54_convert_rev0(dev, curve_data);
470 break;
471 case 1:
472 err = p54_convert_rev1(dev, curve_data);
473 break;
474 default:
475 printk(KERN_ERR "%s: unknown curve data "
476 "revision %d\n",
477 wiphy_name(dev->wiphy),
478 curve_data->cal_method_rev);
479 err = -ENODEV;
480 break;
481 }
482 if (err)
483 goto err;
484 }
485 break;
486 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
487 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
488 if (!priv->iq_autocal) {
489 err = -ENOMEM;
490 goto err;
491 }
492
493 memcpy(priv->iq_autocal, entry->data, data_len);
494 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
495 break;
496 case PDR_DEFAULT_COUNTRY:
497 p54_parse_default_country(dev, entry->data, data_len);
498 break;
499 case PDR_INTERFACE_LIST:
500 tmp = entry->data;
501 while ((u8 *)tmp < entry->data + data_len) {
502 struct bootrec_exp_if *exp_if = tmp;
503 if (le16_to_cpu(exp_if->if_id) == 0xf)
504 synth = le16_to_cpu(exp_if->variant);
505 tmp += sizeof(struct bootrec_exp_if);
506 }
507 break;
508 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
509 priv->version = *(u8 *)(entry->data + 1);
510 break;
511 case PDR_RSSI_LINEAR_APPROXIMATION:
512 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
513 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
514 p54_parse_rssical(dev, entry->data, data_len,
515 le16_to_cpu(entry->code));
516 break;
517 case PDR_END:
518 /* make it overrun */
519 entry_len = len;
520 break;
521 case PDR_MANUFACTURING_PART_NUMBER:
522 case PDR_PDA_VERSION:
523 case PDR_NIC_SERIAL_NUMBER:
524 case PDR_REGULATORY_DOMAIN_LIST:
525 case PDR_TEMPERATURE_TYPE:
526 case PDR_PRISM_PCI_IDENTIFIER:
527 case PDR_COUNTRY_INFORMATION:
528 case PDR_OEM_NAME:
529 case PDR_PRODUCT_NAME:
530 case PDR_UTF8_OEM_NAME:
531 case PDR_UTF8_PRODUCT_NAME:
532 case PDR_COUNTRY_LIST:
533 case PDR_ANTENNA_GAIN:
534 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
535 case PDR_REGULATORY_POWER_LIMITS:
536 case PDR_RADIATED_TRANSMISSION_CORRECTION:
537 case PDR_PRISM_TX_IQ_CALIBRATION:
538 case PDR_BASEBAND_REGISTERS:
539 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
540 break;
541 default:
542 printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
543 wiphy_name(dev->wiphy),
544 le16_to_cpu(entry->code));
545 break;
546 }
547
548 entry = (void *)entry + (entry_len + 1)*2;
549 }
550
551 if (!synth || !priv->iq_autocal || !priv->output_limit ||
552 !priv->curve_data) {
553 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
554 wiphy_name(dev->wiphy));
555 err = -EINVAL;
556 goto err;
557 }
558
559 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
560 if (priv->rxhw == 4)
561 p54_init_xbow_synth(dev);
562 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
563 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
564 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
565 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
566
567 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
568 u8 perm_addr[ETH_ALEN];
569
570 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
571 wiphy_name(dev->wiphy));
572 random_ether_addr(perm_addr);
573 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
574 }
575
576 printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
577 wiphy_name(dev->wiphy),
578 dev->wiphy->perm_addr,
579 priv->version, p54_rf_chips[priv->rxhw]);
580
581 return 0;
582
583 err:
584 if (priv->iq_autocal) {
585 kfree(priv->iq_autocal);
586 priv->iq_autocal = NULL;
587 }
588
589 if (priv->output_limit) {
590 kfree(priv->output_limit);
591 priv->output_limit = NULL;
592 }
593
594 if (priv->curve_data) {
595 kfree(priv->curve_data);
596 priv->curve_data = NULL;
597 }
598
599 printk(KERN_ERR "%s: eeprom parse failed!\n",
600 wiphy_name(dev->wiphy));
601 return err;
602 }
603
604 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
605 {
606 struct p54_common *priv = dev->priv;
607 int band = dev->conf.channel->band;
608
609 return ((rssi * priv->rssical_db[band].mul) / 64 +
610 priv->rssical_db[band].add) / 4;
611 }
612
613 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
614 {
615 struct p54_common *priv = dev->priv;
616 struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
617 struct ieee80211_rx_status rx_status = {0};
618 u16 freq = le16_to_cpu(hdr->freq);
619 size_t header_len = sizeof(*hdr);
620 u32 tsf32;
621 u8 rate = hdr->rate & 0xf;
622
623 /*
624 * If the device is in a unspecified state we have to
625 * ignore all data frames. Else we could end up with a
626 * nasty crash.
627 */
628 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
629 return 0;
630
631 if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
632 if (priv->filter_flags & FIF_FCSFAIL)
633 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
634 else
635 return 0;
636 }
637
638 if (hdr->decrypt_status == P54_DECRYPT_OK)
639 rx_status.flag |= RX_FLAG_DECRYPTED;
640 if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
641 (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
642 rx_status.flag |= RX_FLAG_MMIC_ERROR;
643
644 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
645 rx_status.noise = priv->noise;
646 /* XX correct? */
647 rx_status.qual = (100 * hdr->rssi) / 127;
648 if (hdr->rate & 0x10)
649 rx_status.flag |= RX_FLAG_SHORTPRE;
650 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
651 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
652 else
653 rx_status.rate_idx = rate;
654
655 rx_status.freq = freq;
656 rx_status.band = dev->conf.channel->band;
657 rx_status.antenna = hdr->antenna;
658
659 tsf32 = le32_to_cpu(hdr->tsf32);
660 if (tsf32 < priv->tsf_low32)
661 priv->tsf_high32++;
662 rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
663 priv->tsf_low32 = tsf32;
664
665 rx_status.flag |= RX_FLAG_TSFT;
666
667 if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
668 header_len += hdr->align[0];
669
670 skb_pull(skb, header_len);
671 skb_trim(skb, le16_to_cpu(hdr->len));
672
673 ieee80211_rx_irqsafe(dev, skb, &rx_status);
674
675 queue_delayed_work(dev->workqueue, &priv->work,
676 msecs_to_jiffies(P54_STATISTICS_UPDATE));
677
678 return -1;
679 }
680
681 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
682 {
683 struct p54_common *priv = dev->priv;
684 int i;
685
686 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
687 return ;
688
689 for (i = 0; i < dev->queues; i++)
690 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
691 priv->tx_stats[i + P54_QUEUE_DATA].limit)
692 ieee80211_wake_queue(dev, i);
693 }
694
695 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
696 {
697 struct p54_common *priv = dev->priv;
698 struct ieee80211_tx_info *info;
699 struct memrecord *range;
700 unsigned long flags;
701 u32 freed = 0, last_addr = priv->rx_start;
702
703 if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
704 return;
705
706 /*
707 * don't try to free an already unlinked skb
708 */
709 if (unlikely((!skb->next) || (!skb->prev)))
710 return;
711
712 spin_lock_irqsave(&priv->tx_queue.lock, flags);
713 info = IEEE80211_SKB_CB(skb);
714 range = (void *)info->rate_driver_data;
715 if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
716 struct ieee80211_tx_info *ni;
717 struct memrecord *mr;
718
719 ni = IEEE80211_SKB_CB(skb->prev);
720 mr = (struct memrecord *)ni->rate_driver_data;
721 last_addr = mr->end_addr;
722 }
723 if (skb->next != (struct sk_buff *)&priv->tx_queue) {
724 struct ieee80211_tx_info *ni;
725 struct memrecord *mr;
726
727 ni = IEEE80211_SKB_CB(skb->next);
728 mr = (struct memrecord *)ni->rate_driver_data;
729 freed = mr->start_addr - last_addr;
730 } else
731 freed = priv->rx_end - last_addr;
732 __skb_unlink(skb, &priv->tx_queue);
733 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
734 dev_kfree_skb_any(skb);
735
736 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
737 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
738 p54_wake_free_queues(dev);
739 }
740 EXPORT_SYMBOL_GPL(p54_free_skb);
741
742 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
743 __le32 req_id)
744 {
745 struct p54_common *priv = dev->priv;
746 struct sk_buff *entry = priv->tx_queue.next;
747 unsigned long flags;
748
749 spin_lock_irqsave(&priv->tx_queue.lock, flags);
750 while (entry != (struct sk_buff *)&priv->tx_queue) {
751 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
752
753 if (hdr->req_id == req_id) {
754 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
755 return entry;
756 }
757 entry = entry->next;
758 }
759 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
760 return NULL;
761 }
762
763 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
764 {
765 struct p54_common *priv = dev->priv;
766 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
767 struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
768 struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
769 u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
770 struct memrecord *range = NULL;
771 u32 freed = 0;
772 u32 last_addr = priv->rx_start;
773 unsigned long flags;
774 int count, idx;
775
776 spin_lock_irqsave(&priv->tx_queue.lock, flags);
777 while (entry != (struct sk_buff *)&priv->tx_queue) {
778 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
779 struct p54_hdr *entry_hdr;
780 struct p54_tx_data *entry_data;
781 unsigned int pad = 0, frame_len;
782
783 range = (void *)info->rate_driver_data;
784 if (range->start_addr != addr) {
785 last_addr = range->end_addr;
786 entry = entry->next;
787 continue;
788 }
789
790 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
791 struct ieee80211_tx_info *ni;
792 struct memrecord *mr;
793
794 ni = IEEE80211_SKB_CB(entry->next);
795 mr = (struct memrecord *)ni->rate_driver_data;
796 freed = mr->start_addr - last_addr;
797 } else
798 freed = priv->rx_end - last_addr;
799
800 last_addr = range->end_addr;
801 __skb_unlink(entry, &priv->tx_queue);
802 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
803
804 frame_len = entry->len;
805 entry_hdr = (struct p54_hdr *) entry->data;
806 entry_data = (struct p54_tx_data *) entry_hdr->data;
807 priv->tx_stats[entry_data->hw_queue].len--;
808 priv->stats.dot11ACKFailureCount += payload->tries - 1;
809
810 /*
811 * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
812 * generated by the driver. Therefore tx_status is bogus
813 * and we don't want to confuse the mac80211 stack.
814 */
815 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
816 if (entry_data->hw_queue == P54_QUEUE_BEACON)
817 priv->cached_beacon = NULL;
818
819 kfree_skb(entry);
820 goto out;
821 }
822
823 /*
824 * Clear manually, ieee80211_tx_info_clear_status would
825 * clear the counts too and we need them.
826 */
827 memset(&info->status.ampdu_ack_len, 0,
828 sizeof(struct ieee80211_tx_info) -
829 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
830 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
831 status.ampdu_ack_len) != 23);
832
833 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
834 pad = entry_data->align[0];
835
836 /* walk through the rates array and adjust the counts */
837 count = payload->tries;
838 for (idx = 0; idx < 4; idx++) {
839 if (count >= info->status.rates[idx].count) {
840 count -= info->status.rates[idx].count;
841 } else if (count > 0) {
842 info->status.rates[idx].count = count;
843 count = 0;
844 } else {
845 info->status.rates[idx].idx = -1;
846 info->status.rates[idx].count = 0;
847 }
848 }
849
850 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
851 (!payload->status))
852 info->flags |= IEEE80211_TX_STAT_ACK;
853 if (payload->status & P54_TX_PSM_CANCELLED)
854 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
855 info->status.ack_signal = p54_rssi_to_dbm(dev,
856 (int)payload->ack_rssi);
857
858 /* Undo all changes to the frame. */
859 switch (entry_data->key_type) {
860 case P54_CRYPTO_TKIPMICHAEL: {
861 u8 *iv = (u8 *)(entry_data->align + pad +
862 entry_data->crypt_offset);
863
864 /* Restore the original TKIP IV. */
865 iv[2] = iv[0];
866 iv[0] = iv[1];
867 iv[1] = (iv[0] | 0x20) & 0x7f; /* WEPSeed - 8.3.2.2 */
868
869 frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
870 break;
871 }
872 case P54_CRYPTO_AESCCMP:
873 frame_len -= 8; /* remove CCMP_MIC */
874 break;
875 case P54_CRYPTO_WEP:
876 frame_len -= 4; /* remove WEP_ICV */
877 break;
878 }
879 skb_trim(entry, frame_len);
880 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
881 ieee80211_tx_status_irqsafe(dev, entry);
882 goto out;
883 }
884 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
885
886 out:
887 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
888 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
889 p54_wake_free_queues(dev);
890 }
891
892 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
893 struct sk_buff *skb)
894 {
895 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
896 struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
897 struct p54_common *priv = dev->priv;
898
899 if (!priv->eeprom)
900 return ;
901
902 if (priv->fw_var >= 0x509) {
903 memcpy(priv->eeprom, eeprom->v2.data,
904 le16_to_cpu(eeprom->v2.len));
905 } else {
906 memcpy(priv->eeprom, eeprom->v1.data,
907 le16_to_cpu(eeprom->v1.len));
908 }
909
910 complete(&priv->eeprom_comp);
911 }
912
913 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
914 {
915 struct p54_common *priv = dev->priv;
916 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
917 struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
918 u32 tsf32;
919
920 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
921 return ;
922
923 tsf32 = le32_to_cpu(stats->tsf32);
924 if (tsf32 < priv->tsf_low32)
925 priv->tsf_high32++;
926 priv->tsf_low32 = tsf32;
927
928 priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
929 priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
930 priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
931
932 priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
933
934 p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
935 }
936
937 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
938 {
939 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
940 struct p54_trap *trap = (struct p54_trap *) hdr->data;
941 u16 event = le16_to_cpu(trap->event);
942 u16 freq = le16_to_cpu(trap->frequency);
943
944 switch (event) {
945 case P54_TRAP_BEACON_TX:
946 break;
947 case P54_TRAP_RADAR:
948 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
949 wiphy_name(dev->wiphy), freq);
950 break;
951 case P54_TRAP_NO_BEACON:
952 break;
953 case P54_TRAP_SCAN:
954 break;
955 case P54_TRAP_TBTT:
956 break;
957 case P54_TRAP_TIMER:
958 break;
959 default:
960 printk(KERN_INFO "%s: received event:%x freq:%d\n",
961 wiphy_name(dev->wiphy), event, freq);
962 break;
963 }
964 }
965
966 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
967 {
968 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
969
970 switch (le16_to_cpu(hdr->type)) {
971 case P54_CONTROL_TYPE_TXDONE:
972 p54_rx_frame_sent(dev, skb);
973 break;
974 case P54_CONTROL_TYPE_TRAP:
975 p54_rx_trap(dev, skb);
976 break;
977 case P54_CONTROL_TYPE_BBP:
978 break;
979 case P54_CONTROL_TYPE_STAT_READBACK:
980 p54_rx_stats(dev, skb);
981 break;
982 case P54_CONTROL_TYPE_EEPROM_READBACK:
983 p54_rx_eeprom_readback(dev, skb);
984 break;
985 default:
986 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
987 wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
988 break;
989 }
990
991 return 0;
992 }
993
994 /* returns zero if skb can be reused */
995 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
996 {
997 u16 type = le16_to_cpu(*((__le16 *)skb->data));
998
999 if (type & P54_HDR_FLAG_CONTROL)
1000 return p54_rx_control(dev, skb);
1001 else
1002 return p54_rx_data(dev, skb);
1003 }
1004 EXPORT_SYMBOL_GPL(p54_rx);
1005
1006 /*
1007 * So, the firmware is somewhat stupid and doesn't know what places in its
1008 * memory incoming data should go to. By poking around in the firmware, we
1009 * can find some unused memory to upload our packets to. However, data that we
1010 * want the card to TX needs to stay intact until the card has told us that
1011 * it is done with it. This function finds empty places we can upload to and
1012 * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
1013 * allocated areas.
1014 */
1015 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1016 struct p54_hdr *data, u32 len)
1017 {
1018 struct p54_common *priv = dev->priv;
1019 struct sk_buff *entry = priv->tx_queue.next;
1020 struct sk_buff *target_skb = NULL;
1021 struct ieee80211_tx_info *info;
1022 struct memrecord *range;
1023 u32 last_addr = priv->rx_start;
1024 u32 largest_hole = 0;
1025 u32 target_addr = priv->rx_start;
1026 unsigned long flags;
1027 unsigned int left;
1028 len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1029
1030 if (!skb)
1031 return -EINVAL;
1032
1033 spin_lock_irqsave(&priv->tx_queue.lock, flags);
1034
1035 left = skb_queue_len(&priv->tx_queue);
1036 if (unlikely(left >= 28)) {
1037 /*
1038 * The tx_queue is nearly full!
1039 * We have throttle normal data traffic, because we must
1040 * have a few spare slots for control frames left.
1041 */
1042 ieee80211_stop_queues(dev);
1043 queue_delayed_work(dev->workqueue, &priv->work,
1044 msecs_to_jiffies(P54_TX_TIMEOUT));
1045
1046 if (unlikely(left == 32)) {
1047 /*
1048 * The tx_queue is now really full.
1049 *
1050 * TODO: check if the device has crashed and reset it.
1051 */
1052 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1053 return -ENOSPC;
1054 }
1055 }
1056
1057 while (left--) {
1058 u32 hole_size;
1059 info = IEEE80211_SKB_CB(entry);
1060 range = (void *)info->rate_driver_data;
1061 hole_size = range->start_addr - last_addr;
1062 if (!target_skb && hole_size >= len) {
1063 target_skb = entry->prev;
1064 hole_size -= len;
1065 target_addr = last_addr;
1066 }
1067 largest_hole = max(largest_hole, hole_size);
1068 last_addr = range->end_addr;
1069 entry = entry->next;
1070 }
1071 if (!target_skb && priv->rx_end - last_addr >= len) {
1072 target_skb = priv->tx_queue.prev;
1073 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1074 if (!skb_queue_empty(&priv->tx_queue)) {
1075 info = IEEE80211_SKB_CB(target_skb);
1076 range = (void *)info->rate_driver_data;
1077 target_addr = range->end_addr;
1078 }
1079 } else
1080 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1081
1082 if (!target_skb) {
1083 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1084 ieee80211_stop_queues(dev);
1085 return -ENOSPC;
1086 }
1087
1088 info = IEEE80211_SKB_CB(skb);
1089 range = (void *)info->rate_driver_data;
1090 range->start_addr = target_addr;
1091 range->end_addr = target_addr + len;
1092 __skb_queue_after(&priv->tx_queue, target_skb, skb);
1093 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1094
1095 if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1096 48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1097 ieee80211_stop_queues(dev);
1098
1099 data->req_id = cpu_to_le32(target_addr + priv->headroom);
1100 return 0;
1101 }
1102
1103 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev,
1104 u16 hdr_flags, u16 len, u16 type, gfp_t memflags)
1105 {
1106 struct p54_common *priv = dev->priv;
1107 struct p54_hdr *hdr;
1108 struct sk_buff *skb;
1109
1110 skb = __dev_alloc_skb(len + priv->tx_hdr_len, memflags);
1111 if (!skb)
1112 return NULL;
1113 skb_reserve(skb, priv->tx_hdr_len);
1114
1115 hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1116 hdr->flags = cpu_to_le16(hdr_flags);
1117 hdr->len = cpu_to_le16(len - sizeof(*hdr));
1118 hdr->type = cpu_to_le16(type);
1119 hdr->tries = hdr->rts_tries = 0;
1120
1121 if (unlikely(p54_assign_address(dev, skb, hdr, len))) {
1122 kfree_skb(skb);
1123 return NULL;
1124 }
1125 return skb;
1126 }
1127
1128 int p54_read_eeprom(struct ieee80211_hw *dev)
1129 {
1130 struct p54_common *priv = dev->priv;
1131 struct p54_hdr *hdr = NULL;
1132 struct p54_eeprom_lm86 *eeprom_hdr;
1133 struct sk_buff *skb;
1134 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1135 int ret = -ENOMEM;
1136 void *eeprom = NULL;
1137
1138 maxblocksize = EEPROM_READBACK_LEN;
1139 if (priv->fw_var >= 0x509)
1140 maxblocksize -= 0xc;
1141 else
1142 maxblocksize -= 0x4;
1143
1144 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*hdr) +
1145 sizeof(*eeprom_hdr) + maxblocksize,
1146 P54_CONTROL_TYPE_EEPROM_READBACK, GFP_KERNEL);
1147 if (!skb)
1148 goto free;
1149 priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1150 if (!priv->eeprom)
1151 goto free;
1152 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1153 if (!eeprom)
1154 goto free;
1155
1156 eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1157 sizeof(*eeprom_hdr) + maxblocksize);
1158
1159 while (eeprom_size) {
1160 blocksize = min(eeprom_size, maxblocksize);
1161 if (priv->fw_var < 0x509) {
1162 eeprom_hdr->v1.offset = cpu_to_le16(offset);
1163 eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1164 } else {
1165 eeprom_hdr->v2.offset = cpu_to_le32(offset);
1166 eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1167 eeprom_hdr->v2.magic2 = 0xf;
1168 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1169 }
1170 priv->tx(dev, skb);
1171
1172 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1173 printk(KERN_ERR "%s: device does not respond!\n",
1174 wiphy_name(dev->wiphy));
1175 ret = -EBUSY;
1176 goto free;
1177 }
1178
1179 memcpy(eeprom + offset, priv->eeprom, blocksize);
1180 offset += blocksize;
1181 eeprom_size -= blocksize;
1182 }
1183
1184 ret = p54_parse_eeprom(dev, eeprom, offset);
1185 free:
1186 kfree(priv->eeprom);
1187 priv->eeprom = NULL;
1188 p54_free_skb(dev, skb);
1189 kfree(eeprom);
1190
1191 return ret;
1192 }
1193 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1194
1195 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1196 bool set)
1197 {
1198 struct p54_common *priv = dev->priv;
1199 struct sk_buff *skb;
1200 struct p54_tim *tim;
1201
1202 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1203 sizeof(struct p54_hdr) + sizeof(*tim),
1204 P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1205 if (!skb)
1206 return -ENOMEM;
1207
1208 tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1209 tim->count = 1;
1210 tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1211 priv->tx(dev, skb);
1212 return 0;
1213 }
1214
1215 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1216 {
1217 struct p54_common *priv = dev->priv;
1218 struct sk_buff *skb;
1219 struct p54_sta_unlock *sta;
1220
1221 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1222 sizeof(struct p54_hdr) + sizeof(*sta),
1223 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1224 if (!skb)
1225 return -ENOMEM;
1226
1227 sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1228 memcpy(sta->addr, addr, ETH_ALEN);
1229 priv->tx(dev, skb);
1230 return 0;
1231 }
1232
1233 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1234 enum sta_notify_cmd notify_cmd,
1235 struct ieee80211_sta *sta)
1236 {
1237 switch (notify_cmd) {
1238 case STA_NOTIFY_ADD:
1239 case STA_NOTIFY_REMOVE:
1240 /*
1241 * Notify the firmware that we don't want or we don't
1242 * need to buffer frames for this station anymore.
1243 */
1244
1245 p54_sta_unlock(dev, sta->addr);
1246 break;
1247 case STA_NOTIFY_AWAKE:
1248 /* update the firmware's filter table */
1249 p54_sta_unlock(dev, sta->addr);
1250 break;
1251 default:
1252 break;
1253 }
1254 }
1255
1256 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1257 {
1258 struct p54_common *priv = dev->priv;
1259 struct sk_buff *skb;
1260 struct p54_hdr *hdr;
1261 struct p54_txcancel *cancel;
1262
1263 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1264 sizeof(struct p54_hdr) + sizeof(*cancel),
1265 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1266 if (!skb)
1267 return -ENOMEM;
1268
1269 hdr = (void *)entry->data;
1270 cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1271 cancel->req_id = hdr->req_id;
1272 priv->tx(dev, skb);
1273 return 0;
1274 }
1275
1276 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1277 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1278 u16 *flags, u16 *aid)
1279 {
1280 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1281 struct p54_common *priv = dev->priv;
1282 int ret = 1;
1283
1284 switch (priv->mode) {
1285 case NL80211_IFTYPE_MONITOR:
1286 /*
1287 * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1288 * every frame in promiscuous/monitor mode.
1289 * see STSW45x0C LMAC API - page 12.
1290 */
1291 *aid = 0;
1292 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1293 *queue += P54_QUEUE_DATA;
1294 break;
1295 case NL80211_IFTYPE_STATION:
1296 *aid = 1;
1297 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1298 *queue = P54_QUEUE_MGMT;
1299 ret = 0;
1300 } else
1301 *queue += P54_QUEUE_DATA;
1302 break;
1303 case NL80211_IFTYPE_AP:
1304 case NL80211_IFTYPE_ADHOC:
1305 case NL80211_IFTYPE_MESH_POINT:
1306 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1307 *aid = 0;
1308 *queue = P54_QUEUE_CAB;
1309 return 0;
1310 }
1311
1312 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1313 if (ieee80211_is_probe_resp(hdr->frame_control)) {
1314 *aid = 0;
1315 *queue = P54_QUEUE_MGMT;
1316 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1317 P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1318 return 0;
1319 } else if (ieee80211_is_beacon(hdr->frame_control)) {
1320 *aid = 0;
1321
1322 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1323 /*
1324 * Injecting beacons on top of a AP is
1325 * not a good idea... nevertheless,
1326 * it should be doable.
1327 */
1328
1329 *queue += P54_QUEUE_DATA;
1330 return 1;
1331 }
1332
1333 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1334 *queue = P54_QUEUE_BEACON;
1335 *extra_len = IEEE80211_MAX_TIM_LEN;
1336 return 0;
1337 } else {
1338 *queue = P54_QUEUE_MGMT;
1339 ret = 0;
1340 }
1341 } else
1342 *queue += P54_QUEUE_DATA;
1343
1344 if (info->control.sta)
1345 *aid = info->control.sta->aid;
1346 else
1347 *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1348 break;
1349 }
1350 return ret;
1351 }
1352
1353 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1354 {
1355 switch (alg) {
1356 case ALG_WEP:
1357 return P54_CRYPTO_WEP;
1358 case ALG_TKIP:
1359 return P54_CRYPTO_TKIPMICHAEL;
1360 case ALG_CCMP:
1361 return P54_CRYPTO_AESCCMP;
1362 default:
1363 return 0;
1364 }
1365 }
1366
1367 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1368 {
1369 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1370 struct ieee80211_tx_queue_stats *current_queue;
1371 struct p54_common *priv = dev->priv;
1372 struct p54_hdr *hdr;
1373 struct p54_tx_data *txhdr;
1374 size_t padding, len, tim_len = 0;
1375 int i, j, ridx, ret;
1376 u16 hdr_flags = 0, aid = 0;
1377 u8 rate, queue, crypt_offset = 0;
1378 u8 cts_rate = 0x20;
1379 u8 rc_flags;
1380 u8 calculated_tries[4];
1381 u8 nrates = 0, nremaining = 8;
1382
1383 queue = skb_get_queue_mapping(skb);
1384
1385 ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1386 current_queue = &priv->tx_stats[queue];
1387 if (unlikely((current_queue->len > current_queue->limit) && ret))
1388 return NETDEV_TX_BUSY;
1389 current_queue->len++;
1390 current_queue->count++;
1391 if ((current_queue->len == current_queue->limit) && ret)
1392 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1393
1394 padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1395 len = skb->len;
1396
1397 if (info->control.hw_key) {
1398 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1399 if (info->control.hw_key->alg == ALG_TKIP) {
1400 u8 *iv = (u8 *)(skb->data + crypt_offset);
1401 /*
1402 * The firmware excepts that the IV has to have
1403 * this special format
1404 */
1405 iv[1] = iv[0];
1406 iv[0] = iv[2];
1407 iv[2] = 0;
1408 }
1409 }
1410
1411 txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1412 hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1413
1414 if (padding)
1415 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1416 hdr->type = cpu_to_le16(aid);
1417 hdr->rts_tries = info->control.rates[0].count;
1418
1419 /*
1420 * we register the rates in perfect order, and
1421 * RTS/CTS won't happen on 5 GHz
1422 */
1423 cts_rate = info->control.rts_cts_rate_idx;
1424
1425 memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1426
1427 /* see how many rates got used */
1428 for (i = 0; i < 4; i++) {
1429 if (info->control.rates[i].idx < 0)
1430 break;
1431 nrates++;
1432 }
1433
1434 /* limit tries to 8/nrates per rate */
1435 for (i = 0; i < nrates; i++) {
1436 /*
1437 * The magic expression here is equivalent to 8/nrates for
1438 * all values that matter, but avoids division and jumps.
1439 * Note that nrates can only take the values 1 through 4.
1440 */
1441 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1442 info->control.rates[i].count);
1443 nremaining -= calculated_tries[i];
1444 }
1445
1446 /* if there are tries left, distribute from back to front */
1447 for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1448 int tmp = info->control.rates[i].count - calculated_tries[i];
1449
1450 if (tmp <= 0)
1451 continue;
1452 /* RC requested more tries at this rate */
1453
1454 tmp = min_t(int, tmp, nremaining);
1455 calculated_tries[i] += tmp;
1456 nremaining -= tmp;
1457 }
1458
1459 ridx = 0;
1460 for (i = 0; i < nrates && ridx < 8; i++) {
1461 /* we register the rates in perfect order */
1462 rate = info->control.rates[i].idx;
1463 if (info->band == IEEE80211_BAND_5GHZ)
1464 rate += 4;
1465
1466 /* store the count we actually calculated for TX status */
1467 info->control.rates[i].count = calculated_tries[i];
1468
1469 rc_flags = info->control.rates[i].flags;
1470 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1471 rate |= 0x10;
1472 cts_rate |= 0x10;
1473 }
1474 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1475 rate |= 0x40;
1476 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1477 rate |= 0x20;
1478 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1479 txhdr->rateset[ridx] = rate;
1480 ridx++;
1481 }
1482 }
1483
1484 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1485 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1486
1487 /* TODO: enable bursting */
1488 hdr->flags = cpu_to_le16(hdr_flags);
1489 hdr->tries = ridx;
1490 txhdr->rts_rate_idx = 0;
1491 if (info->control.hw_key) {
1492 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1493 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1494 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1495 if (info->control.hw_key->alg == ALG_TKIP) {
1496 if (unlikely(skb_tailroom(skb) < 12))
1497 goto err;
1498 /* reserve space for the MIC key */
1499 len += 8;
1500 memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1501 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1502 }
1503 /* reserve some space for ICV */
1504 len += info->control.hw_key->icv_len;
1505 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1506 info->control.hw_key->icv_len);
1507 } else {
1508 txhdr->key_type = 0;
1509 txhdr->key_len = 0;
1510 }
1511 txhdr->crypt_offset = crypt_offset;
1512 txhdr->hw_queue = queue;
1513 txhdr->backlog = current_queue->len;
1514 memset(txhdr->durations, 0, sizeof(txhdr->durations));
1515 txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
1516 2 : info->antenna_sel_tx - 1;
1517 txhdr->output_power = priv->output_power;
1518 txhdr->cts_rate = cts_rate;
1519 if (padding)
1520 txhdr->align[0] = padding;
1521
1522 hdr->len = cpu_to_le16(len);
1523 /* modifies skb->cb and with it info, so must be last! */
1524 if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1525 goto err;
1526 priv->tx(dev, skb);
1527
1528 queue_delayed_work(dev->workqueue, &priv->work,
1529 msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1530
1531 return 0;
1532
1533 err:
1534 skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1535 current_queue->len--;
1536 current_queue->count--;
1537 return NETDEV_TX_BUSY;
1538 }
1539
1540 static int p54_setup_mac(struct ieee80211_hw *dev)
1541 {
1542 struct p54_common *priv = dev->priv;
1543 struct sk_buff *skb;
1544 struct p54_setup_mac *setup;
1545 u16 mode;
1546
1547 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup) +
1548 sizeof(struct p54_hdr), P54_CONTROL_TYPE_SETUP,
1549 GFP_ATOMIC);
1550 if (!skb)
1551 return -ENOMEM;
1552
1553 setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1554 if (dev->conf.radio_enabled) {
1555 switch (priv->mode) {
1556 case NL80211_IFTYPE_STATION:
1557 mode = P54_FILTER_TYPE_STATION;
1558 break;
1559 case NL80211_IFTYPE_AP:
1560 mode = P54_FILTER_TYPE_AP;
1561 break;
1562 case NL80211_IFTYPE_ADHOC:
1563 case NL80211_IFTYPE_MESH_POINT:
1564 mode = P54_FILTER_TYPE_IBSS;
1565 break;
1566 case NL80211_IFTYPE_MONITOR:
1567 mode = P54_FILTER_TYPE_PROMISCUOUS;
1568 break;
1569 default:
1570 mode = P54_FILTER_TYPE_NONE;
1571 break;
1572 }
1573
1574 /*
1575 * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1576 * STSW45X0C LMAC API - page 12
1577 */
1578 if ((priv->filter_flags & FIF_PROMISC_IN_BSS) &&
1579 (mode != P54_FILTER_TYPE_PROMISCUOUS))
1580 mode |= P54_FILTER_TYPE_TRANSPARENT;
1581 } else
1582 mode = P54_FILTER_TYPE_RX_DISABLED;
1583
1584 setup->mac_mode = cpu_to_le16(mode);
1585 memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1586 memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1587 setup->rx_antenna = 2; /* automatic */
1588 setup->rx_align = 0;
1589 if (priv->fw_var < 0x500) {
1590 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1591 memset(setup->v1.rts_rates, 0, 8);
1592 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1593 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1594 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1595 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1596 setup->v1.unalloc0 = cpu_to_le16(0);
1597 } else {
1598 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1599 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1600 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1601 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1602 setup->v2.truncate = cpu_to_le16(48896);
1603 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1604 setup->v2.sbss_offset = 0;
1605 setup->v2.mcast_window = 0;
1606 setup->v2.rx_rssi_threshold = 0;
1607 setup->v2.rx_ed_threshold = 0;
1608 setup->v2.ref_clock = cpu_to_le32(644245094);
1609 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1610 setup->v2.osc_start_delay = cpu_to_le16(65535);
1611 }
1612 priv->tx(dev, skb);
1613 return 0;
1614 }
1615
1616 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1617 {
1618 struct p54_common *priv = dev->priv;
1619 struct sk_buff *skb;
1620 struct p54_scan *chan;
1621 unsigned int i;
1622 void *entry;
1623 __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1624 int band = dev->conf.channel->band;
1625
1626 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan) +
1627 sizeof(struct p54_hdr), P54_CONTROL_TYPE_SCAN,
1628 GFP_ATOMIC);
1629 if (!skb)
1630 return -ENOMEM;
1631
1632 chan = (struct p54_scan *) skb_put(skb, sizeof(*chan));
1633 memset(chan->padding1, 0, sizeof(chan->padding1));
1634 chan->mode = cpu_to_le16(mode);
1635 chan->dwell = cpu_to_le16(dwell);
1636
1637 for (i = 0; i < priv->iq_autocal_len; i++) {
1638 if (priv->iq_autocal[i].freq != freq)
1639 continue;
1640
1641 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
1642 sizeof(*priv->iq_autocal));
1643 break;
1644 }
1645 if (i == priv->iq_autocal_len)
1646 goto err;
1647
1648 for (i = 0; i < priv->output_limit_len; i++) {
1649 if (priv->output_limit[i].freq != freq)
1650 continue;
1651
1652 chan->val_barker = 0x38;
1653 chan->val_bpsk = chan->dup_bpsk =
1654 priv->output_limit[i].val_bpsk;
1655 chan->val_qpsk = chan->dup_qpsk =
1656 priv->output_limit[i].val_qpsk;
1657 chan->val_16qam = chan->dup_16qam =
1658 priv->output_limit[i].val_16qam;
1659 chan->val_64qam = chan->dup_64qam =
1660 priv->output_limit[i].val_64qam;
1661 break;
1662 }
1663 if (i == priv->output_limit_len)
1664 goto err;
1665
1666 entry = priv->curve_data->data;
1667 for (i = 0; i < priv->curve_data->channels; i++) {
1668 if (*((__le16 *)entry) != freq) {
1669 entry += sizeof(__le16);
1670 entry += sizeof(struct p54_pa_curve_data_sample) *
1671 priv->curve_data->points_per_channel;
1672 continue;
1673 }
1674
1675 entry += sizeof(__le16);
1676 chan->pa_points_per_curve = 8;
1677 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1678 memcpy(chan->curve_data, entry,
1679 sizeof(struct p54_pa_curve_data_sample) *
1680 min((u8)8, priv->curve_data->points_per_channel));
1681 break;
1682 }
1683
1684 if (priv->fw_var < 0x500) {
1685 chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1686 chan->v1_rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1687 } else {
1688 chan->v2.rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1689 chan->v2.rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1690 chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1691 memset(chan->v2.rts_rates, 0, 8);
1692 }
1693 priv->tx(dev, skb);
1694 return 0;
1695
1696 err:
1697 printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1698 p54_free_skb(dev, skb);
1699 return -EINVAL;
1700 }
1701
1702 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1703 {
1704 struct p54_common *priv = dev->priv;
1705 struct sk_buff *skb;
1706 struct p54_led *led;
1707
1708 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led) +
1709 sizeof(struct p54_hdr), P54_CONTROL_TYPE_LED,
1710 GFP_ATOMIC);
1711 if (!skb)
1712 return -ENOMEM;
1713
1714 led = (struct p54_led *)skb_put(skb, sizeof(*led));
1715 led->mode = cpu_to_le16(mode);
1716 led->led_permanent = cpu_to_le16(link);
1717 led->led_temporary = cpu_to_le16(act);
1718 led->duration = cpu_to_le16(1000);
1719 priv->tx(dev, skb);
1720 return 0;
1721 }
1722
1723 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
1724 do { \
1725 queue.aifs = cpu_to_le16(ai_fs); \
1726 queue.cwmin = cpu_to_le16(cw_min); \
1727 queue.cwmax = cpu_to_le16(cw_max); \
1728 queue.txop = cpu_to_le16(_txop); \
1729 } while(0)
1730
1731 static int p54_set_edcf(struct ieee80211_hw *dev)
1732 {
1733 struct p54_common *priv = dev->priv;
1734 struct sk_buff *skb;
1735 struct p54_edcf *edcf;
1736
1737 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf) +
1738 sizeof(struct p54_hdr), P54_CONTROL_TYPE_DCFINIT,
1739 GFP_ATOMIC);
1740 if (!skb)
1741 return -ENOMEM;
1742
1743 edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1744 if (priv->use_short_slot) {
1745 edcf->slottime = 9;
1746 edcf->sifs = 0x10;
1747 edcf->eofpad = 0x00;
1748 } else {
1749 edcf->slottime = 20;
1750 edcf->sifs = 0x0a;
1751 edcf->eofpad = 0x06;
1752 }
1753 /* (see prism54/isl_oid.h for further details) */
1754 edcf->frameburst = cpu_to_le16(0);
1755 edcf->round_trip_delay = cpu_to_le16(0);
1756 edcf->flags = 0;
1757 memset(edcf->mapping, 0, sizeof(edcf->mapping));
1758 memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1759 priv->tx(dev, skb);
1760 return 0;
1761 }
1762
1763 static int p54_beacon_tim(struct sk_buff *skb)
1764 {
1765 /*
1766 * the good excuse for this mess is ... the firmware.
1767 * The dummy TIM MUST be at the end of the beacon frame,
1768 * because it'll be overwritten!
1769 */
1770
1771 struct ieee80211_mgmt *mgmt = (void *)skb->data;
1772 u8 *pos, *end;
1773
1774 if (skb->len <= sizeof(mgmt))
1775 return -EINVAL;
1776
1777 pos = (u8 *)mgmt->u.beacon.variable;
1778 end = skb->data + skb->len;
1779 while (pos < end) {
1780 if (pos + 2 + pos[1] > end)
1781 return -EINVAL;
1782
1783 if (pos[0] == WLAN_EID_TIM) {
1784 u8 dtim_len = pos[1];
1785 u8 dtim_period = pos[3];
1786 u8 *next = pos + 2 + dtim_len;
1787
1788 if (dtim_len < 3)
1789 return -EINVAL;
1790
1791 memmove(pos, next, end - next);
1792
1793 if (dtim_len > 3)
1794 skb_trim(skb, skb->len - (dtim_len - 3));
1795
1796 pos = end - (dtim_len + 2);
1797
1798 /* add the dummy at the end */
1799 pos[0] = WLAN_EID_TIM;
1800 pos[1] = 3;
1801 pos[2] = 0;
1802 pos[3] = dtim_period;
1803 pos[4] = 0;
1804 return 0;
1805 }
1806 pos += 2 + pos[1];
1807 }
1808 return 0;
1809 }
1810
1811 static int p54_beacon_update(struct ieee80211_hw *dev,
1812 struct ieee80211_vif *vif)
1813 {
1814 struct p54_common *priv = dev->priv;
1815 struct sk_buff *beacon;
1816 int ret;
1817
1818 if (priv->cached_beacon) {
1819 p54_tx_cancel(dev, priv->cached_beacon);
1820 /* wait for the last beacon the be freed */
1821 msleep(10);
1822 }
1823
1824 beacon = ieee80211_beacon_get(dev, vif);
1825 if (!beacon)
1826 return -ENOMEM;
1827 ret = p54_beacon_tim(beacon);
1828 if (ret)
1829 return ret;
1830 ret = p54_tx(dev, beacon);
1831 if (ret)
1832 return ret;
1833 priv->cached_beacon = beacon;
1834 priv->tsf_high32 = 0;
1835 priv->tsf_low32 = 0;
1836
1837 return 0;
1838 }
1839
1840 static int p54_start(struct ieee80211_hw *dev)
1841 {
1842 struct p54_common *priv = dev->priv;
1843 int err;
1844
1845 mutex_lock(&priv->conf_mutex);
1846 err = priv->open(dev);
1847 if (err)
1848 goto out;
1849 P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
1850 P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
1851 P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
1852 P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
1853 err = p54_set_edcf(dev);
1854 if (err)
1855 goto out;
1856
1857 memset(priv->bssid, ~0, ETH_ALEN);
1858 priv->mode = NL80211_IFTYPE_MONITOR;
1859 err = p54_setup_mac(dev);
1860 if (err) {
1861 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1862 goto out;
1863 }
1864
1865 queue_delayed_work(dev->workqueue, &priv->work, 0);
1866
1867 out:
1868 mutex_unlock(&priv->conf_mutex);
1869 return err;
1870 }
1871
1872 static void p54_stop(struct ieee80211_hw *dev)
1873 {
1874 struct p54_common *priv = dev->priv;
1875 struct sk_buff *skb;
1876
1877 mutex_lock(&priv->conf_mutex);
1878 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1879 cancel_delayed_work_sync(&priv->work);
1880 if (priv->cached_beacon)
1881 p54_tx_cancel(dev, priv->cached_beacon);
1882
1883 priv->stop(dev);
1884 while ((skb = skb_dequeue(&priv->tx_queue)))
1885 kfree_skb(skb);
1886 priv->cached_beacon = NULL;
1887 priv->tsf_high32 = priv->tsf_low32 = 0;
1888 mutex_unlock(&priv->conf_mutex);
1889 }
1890
1891 static int p54_add_interface(struct ieee80211_hw *dev,
1892 struct ieee80211_if_init_conf *conf)
1893 {
1894 struct p54_common *priv = dev->priv;
1895
1896 mutex_lock(&priv->conf_mutex);
1897 if (priv->mode != NL80211_IFTYPE_MONITOR) {
1898 mutex_unlock(&priv->conf_mutex);
1899 return -EOPNOTSUPP;
1900 }
1901
1902 switch (conf->type) {
1903 case NL80211_IFTYPE_STATION:
1904 case NL80211_IFTYPE_ADHOC:
1905 case NL80211_IFTYPE_AP:
1906 case NL80211_IFTYPE_MESH_POINT:
1907 priv->mode = conf->type;
1908 break;
1909 default:
1910 mutex_unlock(&priv->conf_mutex);
1911 return -EOPNOTSUPP;
1912 }
1913
1914 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1915 p54_setup_mac(dev);
1916 p54_set_leds(dev, 1, 0, 0);
1917 mutex_unlock(&priv->conf_mutex);
1918 return 0;
1919 }
1920
1921 static void p54_remove_interface(struct ieee80211_hw *dev,
1922 struct ieee80211_if_init_conf *conf)
1923 {
1924 struct p54_common *priv = dev->priv;
1925
1926 mutex_lock(&priv->conf_mutex);
1927 if (priv->cached_beacon)
1928 p54_tx_cancel(dev, priv->cached_beacon);
1929 priv->mode = NL80211_IFTYPE_MONITOR;
1930 memset(priv->mac_addr, 0, ETH_ALEN);
1931 memset(priv->bssid, 0, ETH_ALEN);
1932 p54_setup_mac(dev);
1933 mutex_unlock(&priv->conf_mutex);
1934 }
1935
1936 static int p54_config(struct ieee80211_hw *dev, u32 changed)
1937 {
1938 int ret = 0;
1939 struct p54_common *priv = dev->priv;
1940 struct ieee80211_conf *conf = &dev->conf;
1941
1942 mutex_lock(&priv->conf_mutex);
1943 if (changed & IEEE80211_CONF_CHANGE_POWER)
1944 priv->output_power = conf->power_level << 2;
1945 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
1946 ret = p54_setup_mac(dev);
1947 if (ret)
1948 goto out;
1949 }
1950 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1951 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1952 if (ret)
1953 goto out;
1954 }
1955
1956 out:
1957 mutex_unlock(&priv->conf_mutex);
1958 return ret;
1959 }
1960
1961 static int p54_config_interface(struct ieee80211_hw *dev,
1962 struct ieee80211_vif *vif,
1963 struct ieee80211_if_conf *conf)
1964 {
1965 struct p54_common *priv = dev->priv;
1966 int ret = 0;
1967
1968 mutex_lock(&priv->conf_mutex);
1969 if (conf->changed & IEEE80211_IFCC_BSSID) {
1970 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1971 ret = p54_setup_mac(dev);
1972 if (ret)
1973 goto out;
1974 }
1975
1976 if (conf->changed & IEEE80211_IFCC_BEACON) {
1977 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1978 if (ret)
1979 goto out;
1980 ret = p54_setup_mac(dev);
1981 if (ret)
1982 goto out;
1983 ret = p54_beacon_update(dev, vif);
1984 if (ret)
1985 goto out;
1986 ret = p54_set_edcf(dev);
1987 if (ret)
1988 goto out;
1989 }
1990
1991 ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
1992
1993 out:
1994 mutex_unlock(&priv->conf_mutex);
1995 return ret;
1996 }
1997
1998 static void p54_configure_filter(struct ieee80211_hw *dev,
1999 unsigned int changed_flags,
2000 unsigned int *total_flags,
2001 int mc_count, struct dev_mc_list *mclist)
2002 {
2003 struct p54_common *priv = dev->priv;
2004
2005 *total_flags &= FIF_PROMISC_IN_BSS |
2006 (*total_flags & FIF_PROMISC_IN_BSS) ?
2007 FIF_FCSFAIL : 0;
2008
2009 priv->filter_flags = *total_flags;
2010
2011 if (changed_flags & FIF_PROMISC_IN_BSS)
2012 p54_setup_mac(dev);
2013 }
2014
2015 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2016 const struct ieee80211_tx_queue_params *params)
2017 {
2018 struct p54_common *priv = dev->priv;
2019 int ret;
2020
2021 mutex_lock(&priv->conf_mutex);
2022 if ((params) && !(queue > 4)) {
2023 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2024 params->cw_min, params->cw_max, params->txop);
2025 ret = p54_set_edcf(dev);
2026 } else
2027 ret = -EINVAL;
2028 mutex_unlock(&priv->conf_mutex);
2029 return ret;
2030 }
2031
2032 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2033 {
2034 struct p54_common *priv = dev->priv;
2035 struct sk_buff *skb;
2036 struct p54_xbow_synth *xbow;
2037
2038 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow) +
2039 sizeof(struct p54_hdr),
2040 P54_CONTROL_TYPE_XBOW_SYNTH_CFG,
2041 GFP_KERNEL);
2042 if (!skb)
2043 return -ENOMEM;
2044
2045 xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2046 xbow->magic1 = cpu_to_le16(0x1);
2047 xbow->magic2 = cpu_to_le16(0x2);
2048 xbow->freq = cpu_to_le16(5390);
2049 memset(xbow->padding, 0, sizeof(xbow->padding));
2050 priv->tx(dev, skb);
2051 return 0;
2052 }
2053
2054 static void p54_work(struct work_struct *work)
2055 {
2056 struct p54_common *priv = container_of(work, struct p54_common,
2057 work.work);
2058 struct ieee80211_hw *dev = priv->hw;
2059 struct sk_buff *skb;
2060
2061 if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2062 return ;
2063
2064 /*
2065 * TODO: walk through tx_queue and do the following tasks
2066 * 1. initiate bursts.
2067 * 2. cancel stuck frames / reset the device if necessary.
2068 */
2069
2070 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(struct p54_hdr) +
2071 sizeof(struct p54_statistics),
2072 P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2073 if (!skb)
2074 return ;
2075
2076 priv->tx(dev, skb);
2077 }
2078
2079 static int p54_get_stats(struct ieee80211_hw *dev,
2080 struct ieee80211_low_level_stats *stats)
2081 {
2082 struct p54_common *priv = dev->priv;
2083
2084 memcpy(stats, &priv->stats, sizeof(*stats));
2085 return 0;
2086 }
2087
2088 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2089 struct ieee80211_tx_queue_stats *stats)
2090 {
2091 struct p54_common *priv = dev->priv;
2092
2093 memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2094 sizeof(stats[0]) * dev->queues);
2095 return 0;
2096 }
2097
2098 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2099 struct ieee80211_vif *vif,
2100 struct ieee80211_bss_conf *info,
2101 u32 changed)
2102 {
2103 struct p54_common *priv = dev->priv;
2104
2105 if (changed & BSS_CHANGED_ERP_SLOT) {
2106 priv->use_short_slot = info->use_short_slot;
2107 p54_set_edcf(dev);
2108 }
2109 if (changed & BSS_CHANGED_BASIC_RATES) {
2110 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2111 priv->basic_rate_mask = (info->basic_rates << 4);
2112 else
2113 priv->basic_rate_mask = info->basic_rates;
2114 p54_setup_mac(dev);
2115 if (priv->fw_var >= 0x500)
2116 p54_scan(dev, P54_SCAN_EXIT, 0);
2117 }
2118 if (changed & BSS_CHANGED_ASSOC) {
2119 if (info->assoc) {
2120 priv->aid = info->aid;
2121 priv->wakeup_timer = info->beacon_int *
2122 info->dtim_period * 5;
2123 p54_setup_mac(dev);
2124 }
2125 }
2126
2127 }
2128
2129 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2130 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2131 struct ieee80211_key_conf *key)
2132 {
2133 struct p54_common *priv = dev->priv;
2134 struct sk_buff *skb;
2135 struct p54_keycache *rxkey;
2136 u8 algo = 0;
2137
2138 if (modparam_nohwcrypt)
2139 return -EOPNOTSUPP;
2140
2141 if (cmd == DISABLE_KEY)
2142 algo = 0;
2143 else {
2144 switch (key->alg) {
2145 case ALG_TKIP:
2146 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2147 BR_DESC_PRIV_CAP_TKIP)))
2148 return -EOPNOTSUPP;
2149 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2150 algo = P54_CRYPTO_TKIPMICHAEL;
2151 break;
2152 case ALG_WEP:
2153 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2154 return -EOPNOTSUPP;
2155 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2156 algo = P54_CRYPTO_WEP;
2157 break;
2158 case ALG_CCMP:
2159 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2160 return -EOPNOTSUPP;
2161 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2162 algo = P54_CRYPTO_AESCCMP;
2163 break;
2164 default:
2165 return -EOPNOTSUPP;
2166 }
2167 }
2168
2169 if (key->keyidx > priv->rx_keycache_size) {
2170 /*
2171 * The device supports the choosen algorithm, but the firmware
2172 * does not provide enough key slots to store all of them.
2173 * So, incoming frames have to be decoded by the mac80211 stack,
2174 * but we can still offload encryption for outgoing frames.
2175 */
2176
2177 return 0;
2178 }
2179
2180 mutex_lock(&priv->conf_mutex);
2181 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey) +
2182 sizeof(struct p54_hdr), P54_CONTROL_TYPE_RX_KEYCACHE,
2183 GFP_ATOMIC);
2184 if (!skb) {
2185 mutex_unlock(&priv->conf_mutex);
2186 return -ENOMEM;
2187 }
2188
2189 /* TODO: some devices have 4 more free slots for rx keys */
2190 rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2191 rxkey->entry = key->keyidx;
2192 rxkey->key_id = key->keyidx;
2193 rxkey->key_type = algo;
2194 if (sta)
2195 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2196 else
2197 memset(rxkey->mac, ~0, ETH_ALEN);
2198 if (key->alg != ALG_TKIP) {
2199 rxkey->key_len = min((u8)16, key->keylen);
2200 memcpy(rxkey->key, key->key, rxkey->key_len);
2201 } else {
2202 rxkey->key_len = 24;
2203 memcpy(rxkey->key, key->key, 16);
2204 memcpy(&(rxkey->key[16]), &(key->key
2205 [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2206 }
2207
2208 priv->tx(dev, skb);
2209 mutex_unlock(&priv->conf_mutex);
2210 return 0;
2211 }
2212
2213 static const struct ieee80211_ops p54_ops = {
2214 .tx = p54_tx,
2215 .start = p54_start,
2216 .stop = p54_stop,
2217 .add_interface = p54_add_interface,
2218 .remove_interface = p54_remove_interface,
2219 .set_tim = p54_set_tim,
2220 .sta_notify = p54_sta_notify,
2221 .set_key = p54_set_key,
2222 .config = p54_config,
2223 .config_interface = p54_config_interface,
2224 .bss_info_changed = p54_bss_info_changed,
2225 .configure_filter = p54_configure_filter,
2226 .conf_tx = p54_conf_tx,
2227 .get_stats = p54_get_stats,
2228 .get_tx_stats = p54_get_tx_stats
2229 };
2230
2231 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2232 {
2233 struct ieee80211_hw *dev;
2234 struct p54_common *priv;
2235
2236 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2237 if (!dev)
2238 return NULL;
2239
2240 priv = dev->priv;
2241 priv->hw = dev;
2242 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2243 priv->basic_rate_mask = 0x15f;
2244 skb_queue_head_init(&priv->tx_queue);
2245 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2246 IEEE80211_HW_SIGNAL_DBM |
2247 IEEE80211_HW_NOISE_DBM;
2248
2249 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2250 BIT(NL80211_IFTYPE_ADHOC) |
2251 BIT(NL80211_IFTYPE_AP) |
2252 BIT(NL80211_IFTYPE_MESH_POINT);
2253
2254 dev->channel_change_time = 1000; /* TODO: find actual value */
2255 priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2256 priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2257 priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2258 priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2259 priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2260 dev->queues = 1;
2261 priv->noise = -94;
2262 /*
2263 * We support at most 8 tries no matter which rate they're at,
2264 * we cannot support max_rates * max_rate_tries as we set it
2265 * here, but setting it correctly to 4/2 or so would limit us
2266 * artificially if the RC algorithm wants just two rates, so
2267 * let's say 4/7, we'll redistribute it at TX time, see the
2268 * comments there.
2269 */
2270 dev->max_rates = 4;
2271 dev->max_rate_tries = 7;
2272 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2273 sizeof(struct p54_tx_data);
2274
2275 mutex_init(&priv->conf_mutex);
2276 init_completion(&priv->eeprom_comp);
2277 INIT_DELAYED_WORK(&priv->work, p54_work);
2278
2279 return dev;
2280 }
2281 EXPORT_SYMBOL_GPL(p54_init_common);
2282
2283 void p54_free_common(struct ieee80211_hw *dev)
2284 {
2285 struct p54_common *priv = dev->priv;
2286 kfree(priv->iq_autocal);
2287 kfree(priv->output_limit);
2288 kfree(priv->curve_data);
2289 }
2290 EXPORT_SYMBOL_GPL(p54_free_common);
2291
2292 static int __init p54_init(void)
2293 {
2294 return 0;
2295 }
2296
2297 static void __exit p54_exit(void)
2298 {
2299 }
2300
2301 module_init(p54_init);
2302 module_exit(p54_exit);
Support for the Chinese Samsung S3C2440 based development boards