Revert "p54: Use SKB list handling helpers instead of by-hand code."
[linux-2.6.git] / drivers / net / wireless / p54 / p54common.c
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
826         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
827                 return;
828
829         /*
830          * don't try to free an already unlinked skb
831          */
832         if (unlikely((!skb->next) || (!skb->prev)))
833                 return;
834
835         spin_lock_irqsave(&priv->tx_queue.lock, flags);
836         info = IEEE80211_SKB_CB(skb);
837         range = (void *)info->rate_driver_data;
838         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
839                 struct ieee80211_tx_info *ni;
840                 struct p54_tx_info *mr;
841
842                 ni = IEEE80211_SKB_CB(skb->prev);
843                 mr = (struct p54_tx_info *)ni->rate_driver_data;
844         }
845         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
846                 struct ieee80211_tx_info *ni;
847                 struct p54_tx_info *mr;
848
849                 ni = IEEE80211_SKB_CB(skb->next);
850                 mr = (struct p54_tx_info *)ni->rate_driver_data;
851         }
852         __skb_unlink(skb, &priv->tx_queue);
853         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
854         dev_kfree_skb_any(skb);
855         p54_wake_free_queues(dev);
856 }
857 EXPORT_SYMBOL_GPL(p54_free_skb);
858
859 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
860                                            __le32 req_id)
861 {
862         struct p54_common *priv = dev->priv;
863         struct sk_buff *entry;
864         unsigned long flags;
865
866         spin_lock_irqsave(&priv->tx_queue.lock, flags);
867         entry = priv->tx_queue.next;
868         while (entry != (struct sk_buff *)&priv->tx_queue) {
869                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
870
871                 if (hdr->req_id == req_id) {
872                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
873                         return entry;
874                 }
875                 entry = entry->next;
876         }
877         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
878         return NULL;
879 }
880
881 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
882 {
883         struct p54_common *priv = dev->priv;
884         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
885         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
886         struct sk_buff *entry;
887         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
888         struct p54_tx_info *range = NULL;
889         unsigned long flags;
890         int count, idx;
891
892         spin_lock_irqsave(&priv->tx_queue.lock, flags);
893         entry = (struct sk_buff *) priv->tx_queue.next;
894         while (entry != (struct sk_buff *)&priv->tx_queue) {
895                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
896                 struct p54_hdr *entry_hdr;
897                 struct p54_tx_data *entry_data;
898                 unsigned int pad = 0, frame_len;
899
900                 range = (void *)info->rate_driver_data;
901                 if (range->start_addr != addr) {
902                         entry = entry->next;
903                         continue;
904                 }
905
906                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
907                         struct ieee80211_tx_info *ni;
908                         struct p54_tx_info *mr;
909
910                         ni = IEEE80211_SKB_CB(entry->next);
911                         mr = (struct p54_tx_info *)ni->rate_driver_data;
912                 }
913
914                 __skb_unlink(entry, &priv->tx_queue);
915                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
916
917                 frame_len = entry->len;
918                 entry_hdr = (struct p54_hdr *) entry->data;
919                 entry_data = (struct p54_tx_data *) entry_hdr->data;
920                 priv->tx_stats[entry_data->hw_queue].len--;
921                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
922
923                 /*
924                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
925                  * generated by the driver. Therefore tx_status is bogus
926                  * and we don't want to confuse the mac80211 stack.
927                  */
928                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
929                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
930                                 priv->cached_beacon = NULL;
931
932                         kfree_skb(entry);
933                         goto out;
934                 }
935
936                 /*
937                  * Clear manually, ieee80211_tx_info_clear_status would
938                  * clear the counts too and we need them.
939                  */
940                 memset(&info->status.ampdu_ack_len, 0,
941                        sizeof(struct ieee80211_tx_info) -
942                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
943                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
944                                       status.ampdu_ack_len) != 23);
945
946                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
947                         pad = entry_data->align[0];
948
949                 /* walk through the rates array and adjust the counts */
950                 count = payload->tries;
951                 for (idx = 0; idx < 4; idx++) {
952                         if (count >= info->status.rates[idx].count) {
953                                 count -= info->status.rates[idx].count;
954                         } else if (count > 0) {
955                                 info->status.rates[idx].count = count;
956                                 count = 0;
957                         } else {
958                                 info->status.rates[idx].idx = -1;
959                                 info->status.rates[idx].count = 0;
960                         }
961                 }
962
963                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
964                      (!payload->status))
965                         info->flags |= IEEE80211_TX_STAT_ACK;
966                 if (payload->status & P54_TX_PSM_CANCELLED)
967                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
968                 info->status.ack_signal = p54_rssi_to_dbm(dev,
969                                 (int)payload->ack_rssi);
970
971                 /* Undo all changes to the frame. */
972                 switch (entry_data->key_type) {
973                 case P54_CRYPTO_TKIPMICHAEL: {
974                         u8 *iv = (u8 *)(entry_data->align + pad +
975                                         entry_data->crypt_offset);
976
977                         /* Restore the original TKIP IV. */
978                         iv[2] = iv[0];
979                         iv[0] = iv[1];
980                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
981
982                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
983                         break;
984                         }
985                 case P54_CRYPTO_AESCCMP:
986                         frame_len -= 8; /* remove CCMP_MIC */
987                         break;
988                 case P54_CRYPTO_WEP:
989                         frame_len -= 4; /* remove WEP_ICV */
990                         break;
991                 }
992                 skb_trim(entry, frame_len);
993                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
994                 ieee80211_tx_status_irqsafe(dev, entry);
995                 goto out;
996         }
997         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
998
999 out:
1000         p54_wake_free_queues(dev);
1001 }
1002
1003 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
1004                                    struct sk_buff *skb)
1005 {
1006         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1007         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1008         struct p54_common *priv = dev->priv;
1009
1010         if (!priv->eeprom)
1011                 return ;
1012
1013         if (priv->fw_var >= 0x509) {
1014                 memcpy(priv->eeprom, eeprom->v2.data,
1015                        le16_to_cpu(eeprom->v2.len));
1016         } else {
1017                 memcpy(priv->eeprom, eeprom->v1.data,
1018                        le16_to_cpu(eeprom->v1.len));
1019         }
1020
1021         complete(&priv->eeprom_comp);
1022 }
1023
1024 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1025 {
1026         struct p54_common *priv = dev->priv;
1027         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1028         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1029         u32 tsf32;
1030
1031         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1032                 return ;
1033
1034         tsf32 = le32_to_cpu(stats->tsf32);
1035         if (tsf32 < priv->tsf_low32)
1036                 priv->tsf_high32++;
1037         priv->tsf_low32 = tsf32;
1038
1039         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1040         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1041         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1042
1043         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1044
1045         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1046 }
1047
1048 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1049 {
1050         struct p54_common *priv = dev->priv;
1051         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1052         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1053         u16 event = le16_to_cpu(trap->event);
1054         u16 freq = le16_to_cpu(trap->frequency);
1055
1056         switch (event) {
1057         case P54_TRAP_BEACON_TX:
1058                 break;
1059         case P54_TRAP_RADAR:
1060                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1061                         wiphy_name(dev->wiphy), freq);
1062                 break;
1063         case P54_TRAP_NO_BEACON:
1064                 if (priv->vif)
1065                         ieee80211_beacon_loss(priv->vif);
1066                 break;
1067         case P54_TRAP_SCAN:
1068                 break;
1069         case P54_TRAP_TBTT:
1070                 break;
1071         case P54_TRAP_TIMER:
1072                 break;
1073         default:
1074                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1075                        wiphy_name(dev->wiphy), event, freq);
1076                 break;
1077         }
1078 }
1079
1080 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1081 {
1082         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1083
1084         switch (le16_to_cpu(hdr->type)) {
1085         case P54_CONTROL_TYPE_TXDONE:
1086                 p54_rx_frame_sent(dev, skb);
1087                 break;
1088         case P54_CONTROL_TYPE_TRAP:
1089                 p54_rx_trap(dev, skb);
1090                 break;
1091         case P54_CONTROL_TYPE_BBP:
1092                 break;
1093         case P54_CONTROL_TYPE_STAT_READBACK:
1094                 p54_rx_stats(dev, skb);
1095                 break;
1096         case P54_CONTROL_TYPE_EEPROM_READBACK:
1097                 p54_rx_eeprom_readback(dev, skb);
1098                 break;
1099         default:
1100                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1101                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1102                 break;
1103         }
1104
1105         return 0;
1106 }
1107
1108 /* returns zero if skb can be reused */
1109 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1110 {
1111         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1112
1113         if (type & P54_HDR_FLAG_CONTROL)
1114                 return p54_rx_control(dev, skb);
1115         else
1116                 return p54_rx_data(dev, skb);
1117 }
1118 EXPORT_SYMBOL_GPL(p54_rx);
1119
1120 /*
1121  * So, the firmware is somewhat stupid and doesn't know what places in its
1122  * memory incoming data should go to. By poking around in the firmware, we
1123  * can find some unused memory to upload our packets to. However, data that we
1124  * want the card to TX needs to stay intact until the card has told us that
1125  * it is done with it. This function finds empty places we can upload to and
1126  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1127  * p54_free_skb frees allocated areas.
1128  */
1129 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1130                                struct p54_hdr *data, u32 len)
1131 {
1132         struct p54_common *priv = dev->priv;
1133         struct sk_buff *entry;
1134         struct sk_buff *target_skb = NULL;
1135         struct ieee80211_tx_info *info;
1136         struct p54_tx_info *range;
1137         u32 last_addr = priv->rx_start;
1138         u32 largest_hole = 0;
1139         u32 target_addr = priv->rx_start;
1140         unsigned long flags;
1141         unsigned int left;
1142         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1143
1144         if (!skb)
1145                 return -EINVAL;
1146
1147         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1148
1149         left = skb_queue_len(&priv->tx_queue);
1150         if (unlikely(left >= 28)) {
1151                 /*
1152                  * The tx_queue is nearly full!
1153                  * We have throttle normal data traffic, because we must
1154                  * have a few spare slots for control frames left.
1155                  */
1156                 ieee80211_stop_queues(dev);
1157                 queue_delayed_work(dev->workqueue, &priv->work,
1158                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1159
1160                 if (unlikely(left == 32)) {
1161                         /*
1162                          * The tx_queue is now really full.
1163                          *
1164                          * TODO: check if the device has crashed and reset it.
1165                          */
1166                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1167                         return -ENOSPC;
1168                 }
1169         }
1170
1171         entry = priv->tx_queue.next;
1172         while (left--) {
1173                 u32 hole_size;
1174                 info = IEEE80211_SKB_CB(entry);
1175                 range = (void *)info->rate_driver_data;
1176                 hole_size = range->start_addr - last_addr;
1177                 if (!target_skb && hole_size >= len) {
1178                         target_skb = entry->prev;
1179                         hole_size -= len;
1180                         target_addr = last_addr;
1181                 }
1182                 largest_hole = max(largest_hole, hole_size);
1183                 last_addr = range->end_addr;
1184                 entry = entry->next;
1185         }
1186         if (!target_skb && priv->rx_end - last_addr >= len) {
1187                 target_skb = priv->tx_queue.prev;
1188                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1189                 if (!skb_queue_empty(&priv->tx_queue)) {
1190                         info = IEEE80211_SKB_CB(target_skb);
1191                         range = (void *)info->rate_driver_data;
1192                         target_addr = range->end_addr;
1193                 }
1194         } else
1195                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1196
1197         if (!target_skb) {
1198                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1199                 ieee80211_stop_queues(dev);
1200                 return -ENOSPC;
1201         }
1202
1203         info = IEEE80211_SKB_CB(skb);
1204         range = (void *)info->rate_driver_data;
1205         range->start_addr = target_addr;
1206         range->end_addr = target_addr + len;
1207         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1208         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1209
1210         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1211                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1212                 ieee80211_stop_queues(dev);
1213
1214         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1215         return 0;
1216 }
1217
1218 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1219                                      u16 payload_len, u16 type, gfp_t memflags)
1220 {
1221         struct p54_common *priv = dev->priv;
1222         struct p54_hdr *hdr;
1223         struct sk_buff *skb;
1224         size_t frame_len = sizeof(*hdr) + payload_len;
1225
1226         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1227                 return NULL;
1228
1229         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1230         if (!skb)
1231                 return NULL;
1232         skb_reserve(skb, priv->tx_hdr_len);
1233
1234         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1235         hdr->flags = cpu_to_le16(hdr_flags);
1236         hdr->len = cpu_to_le16(payload_len);
1237         hdr->type = cpu_to_le16(type);
1238         hdr->tries = hdr->rts_tries = 0;
1239
1240         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1241                 kfree_skb(skb);
1242                 return NULL;
1243         }
1244         return skb;
1245 }
1246
1247 int p54_read_eeprom(struct ieee80211_hw *dev)
1248 {
1249         struct p54_common *priv = dev->priv;
1250         struct p54_eeprom_lm86 *eeprom_hdr;
1251         struct sk_buff *skb;
1252         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1253         int ret = -ENOMEM;
1254         void *eeprom = NULL;
1255
1256         maxblocksize = EEPROM_READBACK_LEN;
1257         if (priv->fw_var >= 0x509)
1258                 maxblocksize -= 0xc;
1259         else
1260                 maxblocksize -= 0x4;
1261
1262         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1263                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1264                             GFP_KERNEL);
1265         if (!skb)
1266                 goto free;
1267         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1268         if (!priv->eeprom)
1269                 goto free;
1270         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1271         if (!eeprom)
1272                 goto free;
1273
1274         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1275                      sizeof(*eeprom_hdr) + maxblocksize);
1276
1277         while (eeprom_size) {
1278                 blocksize = min(eeprom_size, maxblocksize);
1279                 if (priv->fw_var < 0x509) {
1280                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1281                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1282                 } else {
1283                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1284                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1285                         eeprom_hdr->v2.magic2 = 0xf;
1286                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1287                 }
1288                 priv->tx(dev, skb);
1289
1290                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1291                         printk(KERN_ERR "%s: device does not respond!\n",
1292                                 wiphy_name(dev->wiphy));
1293                         ret = -EBUSY;
1294                         goto free;
1295                 }
1296
1297                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1298                 offset += blocksize;
1299                 eeprom_size -= blocksize;
1300         }
1301
1302         ret = p54_parse_eeprom(dev, eeprom, offset);
1303 free:
1304         kfree(priv->eeprom);
1305         priv->eeprom = NULL;
1306         p54_free_skb(dev, skb);
1307         kfree(eeprom);
1308
1309         return ret;
1310 }
1311 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1312
1313 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1314                 bool set)
1315 {
1316         struct p54_common *priv = dev->priv;
1317         struct sk_buff *skb;
1318         struct p54_tim *tim;
1319
1320         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1321                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1322         if (!skb)
1323                 return -ENOMEM;
1324
1325         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1326         tim->count = 1;
1327         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1328         priv->tx(dev, skb);
1329         return 0;
1330 }
1331
1332 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1333 {
1334         struct p54_common *priv = dev->priv;
1335         struct sk_buff *skb;
1336         struct p54_sta_unlock *sta;
1337
1338         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1339                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1340         if (!skb)
1341                 return -ENOMEM;
1342
1343         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1344         memcpy(sta->addr, addr, ETH_ALEN);
1345         priv->tx(dev, skb);
1346         return 0;
1347 }
1348
1349 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1350                               enum sta_notify_cmd notify_cmd,
1351                               struct ieee80211_sta *sta)
1352 {
1353         switch (notify_cmd) {
1354         case STA_NOTIFY_ADD:
1355         case STA_NOTIFY_REMOVE:
1356                 /*
1357                  * Notify the firmware that we don't want or we don't
1358                  * need to buffer frames for this station anymore.
1359                  */
1360
1361                 p54_sta_unlock(dev, sta->addr);
1362                 break;
1363         case STA_NOTIFY_AWAKE:
1364                 /* update the firmware's filter table */
1365                 p54_sta_unlock(dev, sta->addr);
1366                 break;
1367         default:
1368                 break;
1369         }
1370 }
1371
1372 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1373 {
1374         struct p54_common *priv = dev->priv;
1375         struct sk_buff *skb;
1376         struct p54_hdr *hdr;
1377         struct p54_txcancel *cancel;
1378
1379         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1380                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1381         if (!skb)
1382                 return -ENOMEM;
1383
1384         hdr = (void *)entry->data;
1385         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1386         cancel->req_id = hdr->req_id;
1387         priv->tx(dev, skb);
1388         return 0;
1389 }
1390
1391 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1392                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1393                 u16 *flags, u16 *aid)
1394 {
1395         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1396         struct p54_common *priv = dev->priv;
1397         int ret = 1;
1398
1399         switch (priv->mode) {
1400         case NL80211_IFTYPE_MONITOR:
1401                 /*
1402                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1403                  * every frame in promiscuous/monitor mode.
1404                  * see STSW45x0C LMAC API - page 12.
1405                  */
1406                 *aid = 0;
1407                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1408                 *queue += P54_QUEUE_DATA;
1409                 break;
1410         case NL80211_IFTYPE_STATION:
1411                 *aid = 1;
1412                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1413                         *queue = P54_QUEUE_MGMT;
1414                         ret = 0;
1415                 } else
1416                         *queue += P54_QUEUE_DATA;
1417                 break;
1418         case NL80211_IFTYPE_AP:
1419         case NL80211_IFTYPE_ADHOC:
1420         case NL80211_IFTYPE_MESH_POINT:
1421                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1422                         *aid = 0;
1423                         *queue = P54_QUEUE_CAB;
1424                         return 0;
1425                 }
1426
1427                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1428                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1429                                 *aid = 0;
1430                                 *queue = P54_QUEUE_MGMT;
1431                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1432                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1433                                 return 0;
1434                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1435                                 *aid = 0;
1436
1437                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1438                                         /*
1439                                          * Injecting beacons on top of a AP is
1440                                          * not a good idea... nevertheless,
1441                                          * it should be doable.
1442                                          */
1443
1444                                         *queue += P54_QUEUE_DATA;
1445                                         return 1;
1446                                 }
1447
1448                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1449                                 *queue = P54_QUEUE_BEACON;
1450                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1451                                 return 0;
1452                         } else {
1453                                 *queue = P54_QUEUE_MGMT;
1454                                 ret = 0;
1455                         }
1456                 } else
1457                         *queue += P54_QUEUE_DATA;
1458
1459                 if (info->control.sta)
1460                         *aid = info->control.sta->aid;
1461
1462                 if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
1463                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1464                 break;
1465         }
1466         return ret;
1467 }
1468
1469 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1470 {
1471         switch (alg) {
1472         case ALG_WEP:
1473                 return P54_CRYPTO_WEP;
1474         case ALG_TKIP:
1475                 return P54_CRYPTO_TKIPMICHAEL;
1476         case ALG_CCMP:
1477                 return P54_CRYPTO_AESCCMP;
1478         default:
1479                 return 0;
1480         }
1481 }
1482
1483 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1484 {
1485         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1486         struct ieee80211_tx_queue_stats *current_queue;
1487         struct p54_common *priv = dev->priv;
1488         struct p54_hdr *hdr;
1489         struct p54_tx_data *txhdr;
1490         size_t padding, len, tim_len = 0;
1491         int i, j, ridx, ret;
1492         u16 hdr_flags = 0, aid = 0;
1493         u8 rate, queue, crypt_offset = 0;
1494         u8 cts_rate = 0x20;
1495         u8 rc_flags;
1496         u8 calculated_tries[4];
1497         u8 nrates = 0, nremaining = 8;
1498
1499         queue = skb_get_queue_mapping(skb);
1500
1501         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1502         current_queue = &priv->tx_stats[queue];
1503         if (unlikely((current_queue->len > current_queue->limit) && ret))
1504                 return NETDEV_TX_BUSY;
1505         current_queue->len++;
1506         current_queue->count++;
1507         if ((current_queue->len == current_queue->limit) && ret)
1508                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1509
1510         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1511         len = skb->len;
1512
1513         if (info->control.hw_key) {
1514                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1515                 if (info->control.hw_key->alg == ALG_TKIP) {
1516                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1517                         /*
1518                          * The firmware excepts that the IV has to have
1519                          * this special format
1520                          */
1521                         iv[1] = iv[0];
1522                         iv[0] = iv[2];
1523                         iv[2] = 0;
1524                 }
1525         }
1526
1527         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1528         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1529
1530         if (padding)
1531                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1532         hdr->type = cpu_to_le16(aid);
1533         hdr->rts_tries = info->control.rates[0].count;
1534
1535         /*
1536          * we register the rates in perfect order, and
1537          * RTS/CTS won't happen on 5 GHz
1538          */
1539         cts_rate = info->control.rts_cts_rate_idx;
1540
1541         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1542
1543         /* see how many rates got used */
1544         for (i = 0; i < 4; i++) {
1545                 if (info->control.rates[i].idx < 0)
1546                         break;
1547                 nrates++;
1548         }
1549
1550         /* limit tries to 8/nrates per rate */
1551         for (i = 0; i < nrates; i++) {
1552                 /*
1553                  * The magic expression here is equivalent to 8/nrates for
1554                  * all values that matter, but avoids division and jumps.
1555                  * Note that nrates can only take the values 1 through 4.
1556                  */
1557                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1558                                                  info->control.rates[i].count);
1559                 nremaining -= calculated_tries[i];
1560         }
1561
1562         /* if there are tries left, distribute from back to front */
1563         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1564                 int tmp = info->control.rates[i].count - calculated_tries[i];
1565
1566                 if (tmp <= 0)
1567                         continue;
1568                 /* RC requested more tries at this rate */
1569
1570                 tmp = min_t(int, tmp, nremaining);
1571                 calculated_tries[i] += tmp;
1572                 nremaining -= tmp;
1573         }
1574
1575         ridx = 0;
1576         for (i = 0; i < nrates && ridx < 8; i++) {
1577                 /* we register the rates in perfect order */
1578                 rate = info->control.rates[i].idx;
1579                 if (info->band == IEEE80211_BAND_5GHZ)
1580                         rate += 4;
1581
1582                 /* store the count we actually calculated for TX status */
1583                 info->control.rates[i].count = calculated_tries[i];
1584
1585                 rc_flags = info->control.rates[i].flags;
1586                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1587                         rate |= 0x10;
1588                         cts_rate |= 0x10;
1589                 }
1590                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1591                         rate |= 0x40;
1592                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1593                         rate |= 0x20;
1594                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1595                         txhdr->rateset[ridx] = rate;
1596                         ridx++;
1597                 }
1598         }
1599
1600         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1601                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1602
1603         /* TODO: enable bursting */
1604         hdr->flags = cpu_to_le16(hdr_flags);
1605         hdr->tries = ridx;
1606         txhdr->rts_rate_idx = 0;
1607         if (info->control.hw_key) {
1608                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1609                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1610                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1611                 if (info->control.hw_key->alg == ALG_TKIP) {
1612                         if (unlikely(skb_tailroom(skb) < 12))
1613                                 goto err;
1614                         /* reserve space for the MIC key */
1615                         len += 8;
1616                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1617                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1618                 }
1619                 /* reserve some space for ICV */
1620                 len += info->control.hw_key->icv_len;
1621                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1622                        info->control.hw_key->icv_len);
1623         } else {
1624                 txhdr->key_type = 0;
1625                 txhdr->key_len = 0;
1626         }
1627         txhdr->crypt_offset = crypt_offset;
1628         txhdr->hw_queue = queue;
1629         txhdr->backlog = current_queue->len;
1630         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1631         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1632                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1633         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1634                 txhdr->longbow.cts_rate = cts_rate;
1635                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1636         } else {
1637                 txhdr->normal.output_power = priv->output_power;
1638                 txhdr->normal.cts_rate = cts_rate;
1639         }
1640         if (padding)
1641                 txhdr->align[0] = padding;
1642
1643         hdr->len = cpu_to_le16(len);
1644         /* modifies skb->cb and with it info, so must be last! */
1645         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1646                 goto err;
1647         priv->tx(dev, skb);
1648
1649         queue_delayed_work(dev->workqueue, &priv->work,
1650                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1651
1652         return NETDEV_TX_OK;
1653
1654  err:
1655         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1656         current_queue->len--;
1657         current_queue->count--;
1658         return NETDEV_TX_BUSY;
1659 }
1660
1661 static int p54_setup_mac(struct ieee80211_hw *dev)
1662 {
1663         struct p54_common *priv = dev->priv;
1664         struct sk_buff *skb;
1665         struct p54_setup_mac *setup;
1666         u16 mode;
1667
1668         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1669                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1670         if (!skb)
1671                 return -ENOMEM;
1672
1673         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1674         if (dev->conf.radio_enabled) {
1675                 switch (priv->mode) {
1676                 case NL80211_IFTYPE_STATION:
1677                         mode = P54_FILTER_TYPE_STATION;
1678                         break;
1679                 case NL80211_IFTYPE_AP:
1680                         mode = P54_FILTER_TYPE_AP;
1681                         break;
1682                 case NL80211_IFTYPE_ADHOC:
1683                 case NL80211_IFTYPE_MESH_POINT:
1684                         mode = P54_FILTER_TYPE_IBSS;
1685                         break;
1686                 case NL80211_IFTYPE_MONITOR:
1687                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1688                         break;
1689                 default:
1690                         mode = P54_FILTER_TYPE_HIBERNATE;
1691                         break;
1692                 }
1693
1694                 /*
1695                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1696                  * STSW45X0C LMAC API - page 12
1697                  */
1698                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1699                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1700                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1701                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1702         } else
1703                 mode = P54_FILTER_TYPE_HIBERNATE;
1704
1705         setup->mac_mode = cpu_to_le16(mode);
1706         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1707         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1708         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1709         setup->rx_align = 0;
1710         if (priv->fw_var < 0x500) {
1711                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1712                 memset(setup->v1.rts_rates, 0, 8);
1713                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1714                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1715                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1716                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1717                 setup->v1.unalloc0 = cpu_to_le16(0);
1718         } else {
1719                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1720                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1721                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1722                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1723                 setup->v2.truncate = cpu_to_le16(48896);
1724                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1725                 setup->v2.sbss_offset = 0;
1726                 setup->v2.mcast_window = 0;
1727                 setup->v2.rx_rssi_threshold = 0;
1728                 setup->v2.rx_ed_threshold = 0;
1729                 setup->v2.ref_clock = cpu_to_le32(644245094);
1730                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1731                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1732         }
1733         priv->tx(dev, skb);
1734         return 0;
1735 }
1736
1737 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1738 {
1739         struct p54_common *priv = dev->priv;
1740         struct sk_buff *skb;
1741         struct p54_hdr *hdr;
1742         struct p54_scan_head *head;
1743         struct p54_iq_autocal_entry *iq_autocal;
1744         union p54_scan_body_union *body;
1745         struct p54_scan_tail_rate *rate;
1746         struct pda_rssi_cal_entry *rssi;
1747         unsigned int i;
1748         void *entry;
1749         int band = dev->conf.channel->band;
1750         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1751
1752         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1753                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1754                             sizeof(*rate) + 2 * sizeof(*rssi),
1755                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1756         if (!skb)
1757                 return -ENOMEM;
1758
1759         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1760         memset(head->scan_params, 0, sizeof(head->scan_params));
1761         head->mode = cpu_to_le16(mode);
1762         head->dwell = cpu_to_le16(dwell);
1763         head->freq = freq;
1764
1765         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1766                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1767                 *pa_power_points = cpu_to_le16(0x0c);
1768         }
1769
1770         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1771         for (i = 0; i < priv->iq_autocal_len; i++) {
1772                 if (priv->iq_autocal[i].freq != freq)
1773                         continue;
1774
1775                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1776                        sizeof(struct p54_iq_autocal_entry));
1777                 break;
1778         }
1779         if (i == priv->iq_autocal_len)
1780                 goto err;
1781
1782         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1783                 body = (void *) skb_put(skb, sizeof(body->longbow));
1784         else
1785                 body = (void *) skb_put(skb, sizeof(body->normal));
1786
1787         for (i = 0; i < priv->output_limit->entries; i++) {
1788                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1789                                      priv->output_limit->entry_size * i);
1790
1791                 if (*entry_freq != freq)
1792                         continue;
1793
1794                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1795                         memcpy(&body->longbow.power_limits,
1796                                (void *) entry_freq + sizeof(__le16),
1797                                priv->output_limit->entry_size);
1798                 } else {
1799                         struct pda_channel_output_limit *limits =
1800                                (void *) entry_freq;
1801
1802                         body->normal.val_barker = 0x38;
1803                         body->normal.val_bpsk = body->normal.dup_bpsk =
1804                                 limits->val_bpsk;
1805                         body->normal.val_qpsk = body->normal.dup_qpsk =
1806                                 limits->val_qpsk;
1807                         body->normal.val_16qam = body->normal.dup_16qam =
1808                                 limits->val_16qam;
1809                         body->normal.val_64qam = body->normal.dup_64qam =
1810                                 limits->val_64qam;
1811                 }
1812                 break;
1813         }
1814         if (i == priv->output_limit->entries)
1815                 goto err;
1816
1817         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1818         for (i = 0; i < priv->curve_data->entries; i++) {
1819                 if (*((__le16 *)entry) != freq) {
1820                         entry += priv->curve_data->entry_size;
1821                         continue;
1822                 }
1823
1824                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1825                         memcpy(&body->longbow.curve_data,
1826                                 (void *) entry + sizeof(__le16),
1827                                 priv->curve_data->entry_size);
1828                 } else {
1829                         struct p54_scan_body *chan = &body->normal;
1830                         struct pda_pa_curve_data *curve_data =
1831                                 (void *) priv->curve_data->data;
1832
1833                         entry += sizeof(__le16);
1834                         chan->pa_points_per_curve = 8;
1835                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1836                         memcpy(chan->curve_data, entry,
1837                                sizeof(struct p54_pa_curve_data_sample) *
1838                                min((u8)8, curve_data->points_per_channel));
1839                 }
1840                 break;
1841         }
1842         if (i == priv->curve_data->entries)
1843                 goto err;
1844
1845         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1846                 rate = (void *) skb_put(skb, sizeof(*rate));
1847                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1848                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1849                         rate->rts_rates[i] = i;
1850         }
1851
1852         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1853         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1854         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1855         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1856                 /* Longbow frontend needs ever more */
1857                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1858                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1859                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1860         }
1861
1862         if (priv->fw_var >= 0x509) {
1863                 rate = (void *) skb_put(skb, sizeof(*rate));
1864                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1865                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1866                         rate->rts_rates[i] = i;
1867         }
1868
1869         hdr = (struct p54_hdr *) skb->data;
1870         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1871
1872         priv->tx(dev, skb);
1873         return 0;
1874
1875  err:
1876         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1877         p54_free_skb(dev, skb);
1878         return -EINVAL;
1879 }
1880
1881 static int p54_set_leds(struct ieee80211_hw *dev)
1882 {
1883         struct p54_common *priv = dev->priv;
1884         struct sk_buff *skb;
1885         struct p54_led *led;
1886
1887         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1888                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1889         if (!skb)
1890                 return -ENOMEM;
1891
1892         led = (struct p54_led *) skb_put(skb, sizeof(*led));
1893         led->flags = cpu_to_le16(0x0003);
1894         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1895         led->delay[0] = cpu_to_le16(1);
1896         led->delay[1] = cpu_to_le16(0);
1897         priv->tx(dev, skb);
1898         return 0;
1899 }
1900
1901 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1902 do {                                                            \
1903         queue.aifs = cpu_to_le16(ai_fs);                        \
1904         queue.cwmin = cpu_to_le16(cw_min);                      \
1905         queue.cwmax = cpu_to_le16(cw_max);                      \
1906         queue.txop = cpu_to_le16(_txop);                        \
1907 } while(0)
1908
1909 static int p54_set_edcf(struct ieee80211_hw *dev)
1910 {
1911         struct p54_common *priv = dev->priv;
1912         struct sk_buff *skb;
1913         struct p54_edcf *edcf;
1914
1915         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1916                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1917         if (!skb)
1918                 return -ENOMEM;
1919
1920         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1921         if (priv->use_short_slot) {
1922                 edcf->slottime = 9;
1923                 edcf->sifs = 0x10;
1924                 edcf->eofpad = 0x00;
1925         } else {
1926                 edcf->slottime = 20;
1927                 edcf->sifs = 0x0a;
1928                 edcf->eofpad = 0x06;
1929         }
1930         /* (see prism54/isl_oid.h for further details) */
1931         edcf->frameburst = cpu_to_le16(0);
1932         edcf->round_trip_delay = cpu_to_le16(0);
1933         edcf->flags = 0;
1934         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1935         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1936         priv->tx(dev, skb);
1937         return 0;
1938 }
1939
1940 static int p54_set_ps(struct ieee80211_hw *dev)
1941 {
1942         struct p54_common *priv = dev->priv;
1943         struct sk_buff *skb;
1944         struct p54_psm *psm;
1945         u16 mode;
1946         int i;
1947
1948         if (dev->conf.flags & IEEE80211_CONF_PS)
1949                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
1950                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
1951         else
1952                 mode = P54_PSM_CAM;
1953
1954         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1955                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1956         if (!skb)
1957                 return -ENOMEM;
1958
1959         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1960         psm->mode = cpu_to_le16(mode);
1961         psm->aid = cpu_to_le16(priv->aid);
1962         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1963                 psm->intervals[i].interval =
1964                         cpu_to_le16(dev->conf.listen_interval);
1965                 psm->intervals[i].periods = cpu_to_le16(1);
1966         }
1967
1968         psm->beacon_rssi_skip_max = 200;
1969         psm->rssi_delta_threshold = 0;
1970         psm->nr = 10;
1971         psm->exclude[0] = 0;
1972
1973         priv->tx(dev, skb);
1974
1975         return 0;
1976 }
1977
1978 static int p54_beacon_tim(struct sk_buff *skb)
1979 {
1980         /*
1981          * the good excuse for this mess is ... the firmware.
1982          * The dummy TIM MUST be at the end of the beacon frame,
1983          * because it'll be overwritten!
1984          */
1985
1986         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1987         u8 *pos, *end;
1988
1989         if (skb->len <= sizeof(mgmt))
1990                 return -EINVAL;
1991
1992         pos = (u8 *)mgmt->u.beacon.variable;
1993         end = skb->data + skb->len;
1994         while (pos < end) {
1995                 if (pos + 2 + pos[1] > end)
1996                         return -EINVAL;
1997
1998                 if (pos[0] == WLAN_EID_TIM) {
1999                         u8 dtim_len = pos[1];
2000                         u8 dtim_period = pos[3];
2001                         u8 *next = pos + 2 + dtim_len;
2002
2003                         if (dtim_len < 3)
2004                                 return -EINVAL;
2005
2006                         memmove(pos, next, end - next);
2007
2008                         if (dtim_len > 3)
2009                                 skb_trim(skb, skb->len - (dtim_len - 3));
2010
2011                         pos = end - (dtim_len + 2);
2012
2013                         /* add the dummy at the end */
2014                         pos[0] = WLAN_EID_TIM;
2015                         pos[1] = 3;
2016                         pos[2] = 0;
2017                         pos[3] = dtim_period;
2018                         pos[4] = 0;
2019                         return 0;
2020                 }
2021                 pos += 2 + pos[1];
2022         }
2023         return 0;
2024 }
2025
2026 static int p54_beacon_update(struct ieee80211_hw *dev,
2027                         struct ieee80211_vif *vif)
2028 {
2029         struct p54_common *priv = dev->priv;
2030         struct sk_buff *beacon;
2031         int ret;
2032
2033         if (priv->cached_beacon) {
2034                 p54_tx_cancel(dev, priv->cached_beacon);
2035                 /* wait for the last beacon the be freed */
2036                 msleep(10);
2037         }
2038
2039         beacon = ieee80211_beacon_get(dev, vif);
2040         if (!beacon)
2041                 return -ENOMEM;
2042         ret = p54_beacon_tim(beacon);
2043         if (ret)
2044                 return ret;
2045         ret = p54_tx(dev, beacon);
2046         if (ret)
2047                 return ret;
2048         priv->cached_beacon = beacon;
2049         priv->tsf_high32 = 0;
2050         priv->tsf_low32 = 0;
2051
2052         return 0;
2053 }
2054
2055 static int p54_start(struct ieee80211_hw *dev)
2056 {
2057         struct p54_common *priv = dev->priv;
2058         int err;
2059
2060         mutex_lock(&priv->conf_mutex);
2061         err = priv->open(dev);
2062         if (err)
2063                 goto out;
2064         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2065         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2066         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2067         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2068         err = p54_set_edcf(dev);
2069         if (err)
2070                 goto out;
2071
2072         memset(priv->bssid, ~0, ETH_ALEN);
2073         priv->mode = NL80211_IFTYPE_MONITOR;
2074         err = p54_setup_mac(dev);
2075         if (err) {
2076                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2077                 goto out;
2078         }
2079
2080         queue_delayed_work(dev->workqueue, &priv->work, 0);
2081
2082         priv->softled_state = 0;
2083         err = p54_set_leds(dev);
2084
2085 out:
2086         mutex_unlock(&priv->conf_mutex);
2087         return err;
2088 }
2089
2090 static void p54_stop(struct ieee80211_hw *dev)
2091 {
2092         struct p54_common *priv = dev->priv;
2093         struct sk_buff *skb;
2094
2095         mutex_lock(&priv->conf_mutex);
2096         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2097         priv->softled_state = 0;
2098         p54_set_leds(dev);
2099
2100 #ifdef CONFIG_P54_LEDS
2101         cancel_delayed_work_sync(&priv->led_work);
2102 #endif /* CONFIG_P54_LEDS */
2103         cancel_delayed_work_sync(&priv->work);
2104         if (priv->cached_beacon)
2105                 p54_tx_cancel(dev, priv->cached_beacon);
2106
2107         priv->stop(dev);
2108         while ((skb = skb_dequeue(&priv->tx_queue)))
2109                 kfree_skb(skb);
2110         priv->cached_beacon = NULL;
2111         priv->tsf_high32 = priv->tsf_low32 = 0;
2112         mutex_unlock(&priv->conf_mutex);
2113 }
2114
2115 static int p54_add_interface(struct ieee80211_hw *dev,
2116                              struct ieee80211_if_init_conf *conf)
2117 {
2118         struct p54_common *priv = dev->priv;
2119
2120         mutex_lock(&priv->conf_mutex);
2121         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2122                 mutex_unlock(&priv->conf_mutex);
2123                 return -EOPNOTSUPP;
2124         }
2125
2126         priv->vif = conf->vif;
2127
2128         switch (conf->type) {
2129         case NL80211_IFTYPE_STATION:
2130         case NL80211_IFTYPE_ADHOC:
2131         case NL80211_IFTYPE_AP:
2132         case NL80211_IFTYPE_MESH_POINT:
2133                 priv->mode = conf->type;
2134                 break;
2135         default:
2136                 mutex_unlock(&priv->conf_mutex);
2137                 return -EOPNOTSUPP;
2138         }
2139
2140         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2141         p54_setup_mac(dev);
2142         mutex_unlock(&priv->conf_mutex);
2143         return 0;
2144 }
2145
2146 static void p54_remove_interface(struct ieee80211_hw *dev,
2147                                  struct ieee80211_if_init_conf *conf)
2148 {
2149         struct p54_common *priv = dev->priv;
2150
2151         mutex_lock(&priv->conf_mutex);
2152         priv->vif = NULL;
2153         if (priv->cached_beacon)
2154                 p54_tx_cancel(dev, priv->cached_beacon);
2155         priv->mode = NL80211_IFTYPE_MONITOR;
2156         memset(priv->mac_addr, 0, ETH_ALEN);
2157         memset(priv->bssid, 0, ETH_ALEN);
2158         p54_setup_mac(dev);
2159         mutex_unlock(&priv->conf_mutex);
2160 }
2161
2162 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2163 {
2164         int ret = 0;
2165         struct p54_common *priv = dev->priv;
2166         struct ieee80211_conf *conf = &dev->conf;
2167
2168         mutex_lock(&priv->conf_mutex);
2169         if (changed & IEEE80211_CONF_CHANGE_POWER)
2170                 priv->output_power = conf->power_level << 2;
2171         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2172                 ret = p54_setup_mac(dev);
2173                 if (ret)
2174                         goto out;
2175         }
2176         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2177                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2178                 if (ret)
2179                         goto out;
2180         }
2181         if (changed & IEEE80211_CONF_CHANGE_PS) {
2182                 ret = p54_set_ps(dev);
2183                 if (ret)
2184                         goto out;
2185         }
2186
2187 out:
2188         mutex_unlock(&priv->conf_mutex);
2189         return ret;
2190 }
2191
2192 static void p54_configure_filter(struct ieee80211_hw *dev,
2193                                  unsigned int changed_flags,
2194                                  unsigned int *total_flags,
2195                                  int mc_count, struct dev_mc_list *mclist)
2196 {
2197         struct p54_common *priv = dev->priv;
2198
2199         *total_flags &= FIF_PROMISC_IN_BSS |
2200                         FIF_OTHER_BSS;
2201
2202         priv->filter_flags = *total_flags;
2203
2204         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2205                 p54_setup_mac(dev);
2206 }
2207
2208 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2209                        const struct ieee80211_tx_queue_params *params)
2210 {
2211         struct p54_common *priv = dev->priv;
2212         int ret;
2213
2214         mutex_lock(&priv->conf_mutex);
2215         if ((params) && !(queue > 4)) {
2216                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2217                         params->cw_min, params->cw_max, params->txop);
2218                 ret = p54_set_edcf(dev);
2219         } else
2220                 ret = -EINVAL;
2221         mutex_unlock(&priv->conf_mutex);
2222         return ret;
2223 }
2224
2225 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2226 {
2227         struct p54_common *priv = dev->priv;
2228         struct sk_buff *skb;
2229         struct p54_xbow_synth *xbow;
2230
2231         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2232                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2233         if (!skb)
2234                 return -ENOMEM;
2235
2236         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2237         xbow->magic1 = cpu_to_le16(0x1);
2238         xbow->magic2 = cpu_to_le16(0x2);
2239         xbow->freq = cpu_to_le16(5390);
2240         memset(xbow->padding, 0, sizeof(xbow->padding));
2241         priv->tx(dev, skb);
2242         return 0;
2243 }
2244
2245 static void p54_work(struct work_struct *work)
2246 {
2247         struct p54_common *priv = container_of(work, struct p54_common,
2248                                                work.work);
2249         struct ieee80211_hw *dev = priv->hw;
2250         struct sk_buff *skb;
2251
2252         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2253                 return ;
2254
2255         /*
2256          * TODO: walk through tx_queue and do the following tasks
2257          *      1. initiate bursts.
2258          *      2. cancel stuck frames / reset the device if necessary.
2259          */
2260
2261         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2262                             sizeof(struct p54_statistics),
2263                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2264         if (!skb)
2265                 return ;
2266
2267         priv->tx(dev, skb);
2268 }
2269
2270 static int p54_get_stats(struct ieee80211_hw *dev,
2271                          struct ieee80211_low_level_stats *stats)
2272 {
2273         struct p54_common *priv = dev->priv;
2274
2275         memcpy(stats, &priv->stats, sizeof(*stats));
2276         return 0;
2277 }
2278
2279 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2280                             struct ieee80211_tx_queue_stats *stats)
2281 {
2282         struct p54_common *priv = dev->priv;
2283
2284         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2285                sizeof(stats[0]) * dev->queues);
2286         return 0;
2287 }
2288
2289 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2290                                  struct ieee80211_vif *vif,
2291                                  struct ieee80211_bss_conf *info,
2292                                  u32 changed)
2293 {
2294         struct p54_common *priv = dev->priv;
2295         int ret;
2296
2297         mutex_lock(&priv->conf_mutex);
2298         if (changed & BSS_CHANGED_BSSID) {
2299                 memcpy(priv->bssid, info->bssid, ETH_ALEN);
2300                 ret = p54_setup_mac(dev);
2301                 if (ret)
2302                         goto out;
2303         }
2304
2305         if (changed & BSS_CHANGED_BEACON) {
2306                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2307                 if (ret)
2308                         goto out;
2309                 ret = p54_setup_mac(dev);
2310                 if (ret)
2311                         goto out;
2312                 ret = p54_beacon_update(dev, vif);
2313                 if (ret)
2314                         goto out;
2315         }
2316         /* XXX: this mimics having two callbacks... clean up */
2317  out:
2318         mutex_unlock(&priv->conf_mutex);
2319
2320         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
2321                 priv->use_short_slot = info->use_short_slot;
2322                 p54_set_edcf(dev);
2323         }
2324         if (changed & BSS_CHANGED_BASIC_RATES) {
2325                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2326                         priv->basic_rate_mask = (info->basic_rates << 4);
2327                 else
2328                         priv->basic_rate_mask = info->basic_rates;
2329                 p54_setup_mac(dev);
2330                 if (priv->fw_var >= 0x500)
2331                         p54_scan(dev, P54_SCAN_EXIT, 0);
2332         }
2333         if (changed & BSS_CHANGED_ASSOC) {
2334                 if (info->assoc) {
2335                         priv->aid = info->aid;
2336                         priv->wakeup_timer = info->beacon_int *
2337                                              info->dtim_period * 5;
2338                         p54_setup_mac(dev);
2339                 }
2340         }
2341 }
2342
2343 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2344                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2345                        struct ieee80211_key_conf *key)
2346 {
2347         struct p54_common *priv = dev->priv;
2348         struct sk_buff *skb;
2349         struct p54_keycache *rxkey;
2350         int slot, ret = 0;
2351         u8 algo = 0;
2352
2353         if (modparam_nohwcrypt)
2354                 return -EOPNOTSUPP;
2355
2356         mutex_lock(&priv->conf_mutex);
2357         if (cmd == SET_KEY) {
2358                 switch (key->alg) {
2359                 case ALG_TKIP:
2360                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2361                               BR_DESC_PRIV_CAP_TKIP))) {
2362                                 ret = -EOPNOTSUPP;
2363                                 goto out_unlock;
2364                         }
2365                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2366                         algo = P54_CRYPTO_TKIPMICHAEL;
2367                         break;
2368                 case ALG_WEP:
2369                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
2370                                 ret = -EOPNOTSUPP;
2371                                 goto out_unlock;
2372                         }
2373                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2374                         algo = P54_CRYPTO_WEP;
2375                         break;
2376                 case ALG_CCMP:
2377                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
2378                                 ret = -EOPNOTSUPP;
2379                                 goto out_unlock;
2380                         }
2381                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2382                         algo = P54_CRYPTO_AESCCMP;
2383                         break;
2384                 default:
2385                         ret = -EOPNOTSUPP;
2386                         goto out_unlock;
2387                 }
2388                 slot = bitmap_find_free_region(priv->used_rxkeys,
2389                                                priv->rx_keycache_size, 0);
2390
2391                 if (slot < 0) {
2392                         /*
2393                          * The device supports the choosen algorithm, but the
2394                          * firmware does not provide enough key slots to store
2395                          * all of them.
2396                          * But encryption offload for outgoing frames is always
2397                          * possible, so we just pretend that the upload was
2398                          * successful and do the decryption in software.
2399                          */
2400
2401                         /* mark the key as invalid. */
2402                         key->hw_key_idx = 0xff;
2403                         goto out_unlock;
2404                 }
2405         } else {
2406                 slot = key->hw_key_idx;
2407
2408                 if (slot == 0xff) {
2409                         /* This key was not uploaded into the rx key cache. */
2410
2411                         goto out_unlock;
2412                 }
2413
2414                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2415                 algo = 0;
2416         }
2417
2418         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2419                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
2420         if (!skb) {
2421                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2422                 ret = -ENOSPC;
2423                 goto out_unlock;
2424         }
2425
2426         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2427         rxkey->entry = slot;
2428         rxkey->key_id = key->keyidx;
2429         rxkey->key_type = algo;
2430         if (sta)
2431                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2432         else
2433                 memset(rxkey->mac, ~0, ETH_ALEN);
2434         if (key->alg != ALG_TKIP) {
2435                 rxkey->key_len = min((u8)16, key->keylen);
2436                 memcpy(rxkey->key, key->key, rxkey->key_len);
2437         } else {
2438                 rxkey->key_len = 24;
2439                 memcpy(rxkey->key, key->key, 16);
2440                 memcpy(&(rxkey->key[16]), &(key->key
2441                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2442         }
2443
2444         priv->tx(dev, skb);
2445         key->hw_key_idx = slot;
2446
2447 out_unlock:
2448         mutex_unlock(&priv->conf_mutex);
2449         return ret;
2450 }
2451
2452 #ifdef CONFIG_P54_LEDS
2453 static void p54_update_leds(struct work_struct *work)
2454 {
2455         struct p54_common *priv = container_of(work, struct p54_common,
2456                                                led_work.work);
2457         int err, i, tmp, blink_delay = 400;
2458         bool rerun = false;
2459
2460         /* Don't toggle the LED, when the device is down. */
2461         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2462                 return ;
2463
2464         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2465                 if (priv->leds[i].toggled) {
2466                         priv->softled_state |= BIT(i);
2467
2468                         tmp = 70 + 200 / (priv->leds[i].toggled);
2469                         if (tmp < blink_delay)
2470                                 blink_delay = tmp;
2471
2472                         if (priv->leds[i].led_dev.brightness == LED_OFF)
2473                                 rerun = true;
2474
2475                         priv->leds[i].toggled =
2476                                 !!priv->leds[i].led_dev.brightness;
2477                 } else
2478                         priv->softled_state &= ~BIT(i);
2479
2480         err = p54_set_leds(priv->hw);
2481         if (err && net_ratelimit())
2482                 printk(KERN_ERR "%s: failed to update LEDs.\n",
2483                         wiphy_name(priv->hw->wiphy));
2484
2485         if (rerun)
2486                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2487                         msecs_to_jiffies(blink_delay));
2488 }
2489
2490 static void p54_led_brightness_set(struct led_classdev *led_dev,
2491                                    enum led_brightness brightness)
2492 {
2493         struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2494                                                led_dev);
2495         struct ieee80211_hw *dev = led->hw_dev;
2496         struct p54_common *priv = dev->priv;
2497
2498         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2499                 return ;
2500
2501         if (brightness) {
2502                 led->toggled++;
2503                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2504                                    HZ/10);
2505         }
2506 }
2507
2508 static int p54_register_led(struct ieee80211_hw *dev,
2509                             unsigned int led_index,
2510                             char *name, char *trigger)
2511 {
2512         struct p54_common *priv = dev->priv;
2513         struct p54_led_dev *led = &priv->leds[led_index];
2514         int err;
2515
2516         if (led->registered)
2517                 return -EEXIST;
2518
2519         snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2520                  wiphy_name(dev->wiphy), name);
2521         led->hw_dev = dev;
2522         led->index = led_index;
2523         led->led_dev.name = led->name;
2524         led->led_dev.default_trigger = trigger;
2525         led->led_dev.brightness_set = p54_led_brightness_set;
2526
2527         err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2528         if (err)
2529                 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2530                         wiphy_name(dev->wiphy), name);
2531         else
2532                 led->registered = 1;
2533
2534         return err;
2535 }
2536
2537 static int p54_init_leds(struct ieee80211_hw *dev)
2538 {
2539         struct p54_common *priv = dev->priv;
2540         int err;
2541
2542         /*
2543          * TODO:
2544          * Figure out if the EEPROM contains some hints about the number
2545          * of available/programmable LEDs of the device.
2546          */
2547
2548         INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
2549
2550         err = p54_register_led(dev, 0, "assoc",
2551                                ieee80211_get_assoc_led_name(dev));
2552         if (err)
2553                 return err;
2554
2555         err = p54_register_led(dev, 1, "tx",
2556                                ieee80211_get_tx_led_name(dev));
2557         if (err)
2558                 return err;
2559
2560         err = p54_register_led(dev, 2, "rx",
2561                                ieee80211_get_rx_led_name(dev));
2562         if (err)
2563                 return err;
2564
2565         err = p54_register_led(dev, 3, "radio",
2566                                ieee80211_get_radio_led_name(dev));
2567         if (err)
2568                 return err;
2569
2570         err = p54_set_leds(dev);
2571         return err;
2572 }
2573
2574 static void p54_unregister_leds(struct ieee80211_hw *dev)
2575 {
2576         struct p54_common *priv = dev->priv;
2577         int i;
2578
2579         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2580                 if (priv->leds[i].registered)
2581                         led_classdev_unregister(&priv->leds[i].led_dev);
2582 }
2583 #endif /* CONFIG_P54_LEDS */
2584
2585 static const struct ieee80211_ops p54_ops = {
2586         .tx                     = p54_tx,
2587         .start                  = p54_start,
2588         .stop                   = p54_stop,
2589         .add_interface          = p54_add_interface,
2590         .remove_interface       = p54_remove_interface,
2591         .set_tim                = p54_set_tim,
2592         .sta_notify             = p54_sta_notify,
2593         .set_key                = p54_set_key,
2594         .config                 = p54_config,
2595         .bss_info_changed       = p54_bss_info_changed,
2596         .configure_filter       = p54_configure_filter,
2597         .conf_tx                = p54_conf_tx,
2598         .get_stats              = p54_get_stats,
2599         .get_tx_stats           = p54_get_tx_stats
2600 };
2601
2602 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2603 {
2604         struct ieee80211_hw *dev;
2605         struct p54_common *priv;
2606
2607         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2608         if (!dev)
2609                 return NULL;
2610
2611         priv = dev->priv;
2612         priv->hw = dev;
2613         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2614         priv->basic_rate_mask = 0x15f;
2615         skb_queue_head_init(&priv->tx_queue);
2616         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2617                      IEEE80211_HW_SIGNAL_DBM |
2618                      IEEE80211_HW_NOISE_DBM;
2619
2620         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2621                                       BIT(NL80211_IFTYPE_ADHOC) |
2622                                       BIT(NL80211_IFTYPE_AP) |
2623                                       BIT(NL80211_IFTYPE_MESH_POINT);
2624
2625         dev->channel_change_time = 1000;        /* TODO: find actual value */
2626         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2627         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2628         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2629         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2630         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2631         dev->queues = 1;
2632         priv->noise = -94;
2633         /*
2634          * We support at most 8 tries no matter which rate they're at,
2635          * we cannot support max_rates * max_rate_tries as we set it
2636          * here, but setting it correctly to 4/2 or so would limit us
2637          * artificially if the RC algorithm wants just two rates, so
2638          * let's say 4/7, we'll redistribute it at TX time, see the
2639          * comments there.
2640          */
2641         dev->max_rates = 4;
2642         dev->max_rate_tries = 7;
2643         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2644                                  sizeof(struct p54_tx_data);
2645
2646         mutex_init(&priv->conf_mutex);
2647         init_completion(&priv->eeprom_comp);
2648         INIT_DELAYED_WORK(&priv->work, p54_work);
2649
2650         return dev;
2651 }
2652 EXPORT_SYMBOL_GPL(p54_init_common);
2653
2654 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2655 {
2656         int err;
2657
2658         err = ieee80211_register_hw(dev);
2659         if (err) {
2660                 dev_err(pdev, "Cannot register device (%d).\n", err);
2661                 return err;
2662         }
2663
2664 #ifdef CONFIG_P54_LEDS
2665         err = p54_init_leds(dev);
2666         if (err)
2667                 return err;
2668 #endif /* CONFIG_P54_LEDS */
2669
2670         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2671         return 0;
2672 }
2673 EXPORT_SYMBOL_GPL(p54_register_common);
2674
2675 void p54_free_common(struct ieee80211_hw *dev)
2676 {
2677         struct p54_common *priv = dev->priv;
2678         kfree(priv->iq_autocal);
2679         kfree(priv->output_limit);
2680         kfree(priv->curve_data);
2681         kfree(priv->used_rxkeys);
2682
2683 #ifdef CONFIG_P54_LEDS
2684         p54_unregister_leds(dev);
2685 #endif /* CONFIG_P54_LEDS */
2686 }
2687 EXPORT_SYMBOL_GPL(p54_free_common);