72859decd907cc4908e00daa42af3568c2dc2d8e
[linux-2.6.git] / drivers / net / wireless / p54 / p54common.c
1
2 /*
3  * Common code for mac80211 Prism54 drivers
4  *
5  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
6  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
7  *
8  * Based on the islsm (softmac prism54) driver, which is:
9  * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  */
15
16 #include <linux/init.h>
17 #include <linux/firmware.h>
18 #include <linux/etherdevice.h>
19
20 #include <net/mac80211.h>
21
22 #include "p54.h"
23 #include "p54common.h"
24
25 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
26 MODULE_DESCRIPTION("Softmac Prism54 common code");
27 MODULE_LICENSE("GPL");
28 MODULE_ALIAS("prism54common");
29
30 static struct ieee80211_rate p54_bgrates[] = {
31         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
32         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
33         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
34         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
35         { .bitrate = 60, .hw_value = 4, },
36         { .bitrate = 90, .hw_value = 5, },
37         { .bitrate = 120, .hw_value = 6, },
38         { .bitrate = 180, .hw_value = 7, },
39         { .bitrate = 240, .hw_value = 8, },
40         { .bitrate = 360, .hw_value = 9, },
41         { .bitrate = 480, .hw_value = 10, },
42         { .bitrate = 540, .hw_value = 11, },
43 };
44
45 static struct ieee80211_channel p54_bgchannels[] = {
46         { .center_freq = 2412, .hw_value = 1, },
47         { .center_freq = 2417, .hw_value = 2, },
48         { .center_freq = 2422, .hw_value = 3, },
49         { .center_freq = 2427, .hw_value = 4, },
50         { .center_freq = 2432, .hw_value = 5, },
51         { .center_freq = 2437, .hw_value = 6, },
52         { .center_freq = 2442, .hw_value = 7, },
53         { .center_freq = 2447, .hw_value = 8, },
54         { .center_freq = 2452, .hw_value = 9, },
55         { .center_freq = 2457, .hw_value = 10, },
56         { .center_freq = 2462, .hw_value = 11, },
57         { .center_freq = 2467, .hw_value = 12, },
58         { .center_freq = 2472, .hw_value = 13, },
59         { .center_freq = 2484, .hw_value = 14, },
60 };
61
62 static struct ieee80211_supported_band band_2GHz = {
63         .channels = p54_bgchannels,
64         .n_channels = ARRAY_SIZE(p54_bgchannels),
65         .bitrates = p54_bgrates,
66         .n_bitrates = ARRAY_SIZE(p54_bgrates),
67 };
68
69 static struct ieee80211_rate p54_arates[] = {
70         { .bitrate = 60, .hw_value = 4, },
71         { .bitrate = 90, .hw_value = 5, },
72         { .bitrate = 120, .hw_value = 6, },
73         { .bitrate = 180, .hw_value = 7, },
74         { .bitrate = 240, .hw_value = 8, },
75         { .bitrate = 360, .hw_value = 9, },
76         { .bitrate = 480, .hw_value = 10, },
77         { .bitrate = 540, .hw_value = 11, },
78 };
79
80 static struct ieee80211_channel p54_achannels[] = {
81         { .center_freq = 4920 },
82         { .center_freq = 4940 },
83         { .center_freq = 4960 },
84         { .center_freq = 4980 },
85         { .center_freq = 5040 },
86         { .center_freq = 5060 },
87         { .center_freq = 5080 },
88         { .center_freq = 5170 },
89         { .center_freq = 5180 },
90         { .center_freq = 5190 },
91         { .center_freq = 5200 },
92         { .center_freq = 5210 },
93         { .center_freq = 5220 },
94         { .center_freq = 5230 },
95         { .center_freq = 5240 },
96         { .center_freq = 5260 },
97         { .center_freq = 5280 },
98         { .center_freq = 5300 },
99         { .center_freq = 5320 },
100         { .center_freq = 5500 },
101         { .center_freq = 5520 },
102         { .center_freq = 5540 },
103         { .center_freq = 5560 },
104         { .center_freq = 5580 },
105         { .center_freq = 5600 },
106         { .center_freq = 5620 },
107         { .center_freq = 5640 },
108         { .center_freq = 5660 },
109         { .center_freq = 5680 },
110         { .center_freq = 5700 },
111         { .center_freq = 5745 },
112         { .center_freq = 5765 },
113         { .center_freq = 5785 },
114         { .center_freq = 5805 },
115         { .center_freq = 5825 },
116 };
117
118 static struct ieee80211_supported_band band_5GHz = {
119         .channels = p54_achannels,
120         .n_channels = ARRAY_SIZE(p54_achannels),
121         .bitrates = p54_arates,
122         .n_bitrates = ARRAY_SIZE(p54_arates),
123 };
124
125 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
126 {
127         struct p54_common *priv = dev->priv;
128         struct bootrec_exp_if *exp_if;
129         struct bootrec *bootrec;
130         u32 *data = (u32 *)fw->data;
131         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
132         u8 *fw_version = NULL;
133         size_t len;
134         int i;
135
136         if (priv->rx_start)
137                 return 0;
138
139         while (data < end_data && *data)
140                 data++;
141
142         while (data < end_data && !*data)
143                 data++;
144
145         bootrec = (struct bootrec *) data;
146
147         while (bootrec->data <= end_data &&
148                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
149                 u32 code = le32_to_cpu(bootrec->code);
150                 switch (code) {
151                 case BR_CODE_COMPONENT_ID:
152                         priv->fw_interface = be32_to_cpup((__be32 *)
153                                              bootrec->data);
154                         switch (priv->fw_interface) {
155                         case FW_FMAC:
156                                 printk(KERN_INFO "p54: FreeMAC firmware\n");
157                                 break;
158                         case FW_LM20:
159                                 printk(KERN_INFO "p54: LM20 firmware\n");
160                                 break;
161                         case FW_LM86:
162                                 printk(KERN_INFO "p54: LM86 firmware\n");
163                                 break;
164                         case FW_LM87:
165                                 printk(KERN_INFO "p54: LM87 firmware\n");
166                                 break;
167                         default:
168                                 printk(KERN_INFO "p54: unknown firmware\n");
169                                 break;
170                         }
171                         break;
172                 case BR_CODE_COMPONENT_VERSION:
173                         /* 24 bytes should be enough for all firmwares */
174                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
175                                 fw_version = (unsigned char*)bootrec->data;
176                         break;
177                 case BR_CODE_DESCR: {
178                         struct bootrec_desc *desc =
179                                 (struct bootrec_desc *)bootrec->data;
180                         priv->rx_start = le32_to_cpu(desc->rx_start);
181                         /* FIXME add sanity checking */
182                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
183                         priv->headroom = desc->headroom;
184                         priv->tailroom = desc->tailroom;
185                         if (le32_to_cpu(bootrec->len) == 11)
186                                 priv->rx_mtu = le16_to_cpu(bootrec->rx_mtu);
187                         else
188                                 priv->rx_mtu = (size_t)
189                                         0x620 - priv->tx_hdr_len;
190                         break;
191                         }
192                 case BR_CODE_EXPOSED_IF:
193                         exp_if = (struct bootrec_exp_if *) bootrec->data;
194                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
195                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
196                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
197                         break;
198                 case BR_CODE_DEPENDENT_IF:
199                         break;
200                 case BR_CODE_END_OF_BRA:
201                 case LEGACY_BR_CODE_END_OF_BRA:
202                         end_data = NULL;
203                         break;
204                 default:
205                         break;
206                 }
207                 bootrec = (struct bootrec *)&bootrec->data[len];
208         }
209
210         if (fw_version)
211                 printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
212                         fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
213
214         if (priv->fw_var >= 0x300) {
215                 /* Firmware supports QoS, use it! */
216                 priv->tx_stats[4].limit = 3;
217                 priv->tx_stats[5].limit = 4;
218                 priv->tx_stats[6].limit = 3;
219                 priv->tx_stats[7].limit = 1;
220                 dev->queues = 4;
221         }
222
223         return 0;
224 }
225 EXPORT_SYMBOL_GPL(p54_parse_firmware);
226
227 static int p54_convert_rev0(struct ieee80211_hw *dev,
228                             struct pda_pa_curve_data *curve_data)
229 {
230         struct p54_common *priv = dev->priv;
231         struct p54_pa_curve_data_sample *dst;
232         struct pda_pa_curve_data_sample_rev0 *src;
233         size_t cd_len = sizeof(*curve_data) +
234                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
235                  curve_data->channels;
236         unsigned int i, j;
237         void *source, *target;
238
239         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
240         if (!priv->curve_data)
241                 return -ENOMEM;
242
243         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
244         source = curve_data->data;
245         target = priv->curve_data->data;
246         for (i = 0; i < curve_data->channels; i++) {
247                 __le16 *freq = source;
248                 source += sizeof(__le16);
249                 *((__le16 *)target) = *freq;
250                 target += sizeof(__le16);
251                 for (j = 0; j < curve_data->points_per_channel; j++) {
252                         dst = target;
253                         src = source;
254
255                         dst->rf_power = src->rf_power;
256                         dst->pa_detector = src->pa_detector;
257                         dst->data_64qam = src->pcv;
258                         /* "invent" the points for the other modulations */
259 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
260                         dst->data_16qam = SUB(src->pcv, 12);
261                         dst->data_qpsk = SUB(dst->data_16qam, 12);
262                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
263                         dst->data_barker = SUB(dst->data_bpsk, 14);
264 #undef SUB
265                         target += sizeof(*dst);
266                         source += sizeof(*src);
267                 }
268         }
269
270         return 0;
271 }
272
273 static int p54_convert_rev1(struct ieee80211_hw *dev,
274                             struct pda_pa_curve_data *curve_data)
275 {
276         struct p54_common *priv = dev->priv;
277         struct p54_pa_curve_data_sample *dst;
278         struct pda_pa_curve_data_sample_rev1 *src;
279         size_t cd_len = sizeof(*curve_data) +
280                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
281                  curve_data->channels;
282         unsigned int i, j;
283         void *source, *target;
284
285         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
286         if (!priv->curve_data)
287                 return -ENOMEM;
288
289         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
290         source = curve_data->data;
291         target = priv->curve_data->data;
292         for (i = 0; i < curve_data->channels; i++) {
293                 __le16 *freq = source;
294                 source += sizeof(__le16);
295                 *((__le16 *)target) = *freq;
296                 target += sizeof(__le16);
297                 for (j = 0; j < curve_data->points_per_channel; j++) {
298                         memcpy(target, source, sizeof(*src));
299
300                         target += sizeof(*dst);
301                         source += sizeof(*src);
302                 }
303                 source++;
304         }
305
306         return 0;
307 }
308
309 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
310                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
311 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
312
313 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
314 {
315         struct p54_common *priv = dev->priv;
316         struct eeprom_pda_wrap *wrap = NULL;
317         struct pda_entry *entry;
318         unsigned int data_len, entry_len;
319         void *tmp;
320         int err;
321         u8 *end = (u8 *)eeprom + len;
322         u16 synth;
323
324         wrap = (struct eeprom_pda_wrap *) eeprom;
325         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
326
327         /* verify that at least the entry length/code fits */
328         while ((u8 *)entry <= end - sizeof(*entry)) {
329                 entry_len = le16_to_cpu(entry->len);
330                 data_len = ((entry_len - 1) << 1);
331
332                 /* abort if entry exceeds whole structure */
333                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
334                         break;
335
336                 switch (le16_to_cpu(entry->code)) {
337                 case PDR_MAC_ADDRESS:
338                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
339                         break;
340                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
341                         if (data_len < 2) {
342                                 err = -EINVAL;
343                                 goto err;
344                         }
345
346                         if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
347                                 err = -EINVAL;
348                                 goto err;
349                         }
350
351                         priv->output_limit = kmalloc(entry->data[1] *
352                                 sizeof(*priv->output_limit), GFP_KERNEL);
353
354                         if (!priv->output_limit) {
355                                 err = -ENOMEM;
356                                 goto err;
357                         }
358
359                         memcpy(priv->output_limit, &entry->data[2],
360                                entry->data[1]*sizeof(*priv->output_limit));
361                         priv->output_limit_len = entry->data[1];
362                         break;
363                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
364                         struct pda_pa_curve_data *curve_data =
365                                 (struct pda_pa_curve_data *)entry->data;
366                         if (data_len < sizeof(*curve_data)) {
367                                 err = -EINVAL;
368                                 goto err;
369                         }
370
371                         switch (curve_data->cal_method_rev) {
372                         case 0:
373                                 err = p54_convert_rev0(dev, curve_data);
374                                 break;
375                         case 1:
376                                 err = p54_convert_rev1(dev, curve_data);
377                                 break;
378                         default:
379                                 printk(KERN_ERR "p54: unknown curve data "
380                                                 "revision %d\n",
381                                                 curve_data->cal_method_rev);
382                                 err = -ENODEV;
383                                 break;
384                         }
385                         if (err)
386                                 goto err;
387
388                 }
389                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
390                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
391                         if (!priv->iq_autocal) {
392                                 err = -ENOMEM;
393                                 goto err;
394                         }
395
396                         memcpy(priv->iq_autocal, entry->data, data_len);
397                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
398                         break;
399                 case PDR_INTERFACE_LIST:
400                         tmp = entry->data;
401                         while ((u8 *)tmp < entry->data + data_len) {
402                                 struct bootrec_exp_if *exp_if = tmp;
403                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
404                                         synth = le16_to_cpu(exp_if->variant);
405                                 tmp += sizeof(struct bootrec_exp_if);
406                         }
407                         break;
408                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
409                         priv->version = *(u8 *)(entry->data + 1);
410                         break;
411                 case PDR_END:
412                         /* make it overrun */
413                         entry_len = len;
414                         break;
415                 default:
416                         printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
417                                 le16_to_cpu(entry->code));
418                         break;
419                 }
420
421                 entry = (void *)entry + (entry_len + 1)*2;
422         }
423
424         if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
425                 printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
426                 err = -EINVAL;
427                 goto err;
428         }
429
430         priv->rxhw = synth & 0x07;
431         if (priv->rxhw == 4)
432                 p54_init_xbow_synth(dev);
433         if (!(synth & 0x40))
434                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
435         if (!(synth & 0x80))
436                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
437
438         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
439                 u8 perm_addr[ETH_ALEN];
440
441                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
442                         wiphy_name(dev->wiphy));
443                 random_ether_addr(perm_addr);
444                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
445         }
446
447         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
448                 wiphy_name(dev->wiphy),
449                 dev->wiphy->perm_addr,
450                 priv->version, p54_rf_chips[priv->rxhw]);
451
452         return 0;
453
454   err:
455         if (priv->iq_autocal) {
456                 kfree(priv->iq_autocal);
457                 priv->iq_autocal = NULL;
458         }
459
460         if (priv->output_limit) {
461                 kfree(priv->output_limit);
462                 priv->output_limit = NULL;
463         }
464
465         if (priv->curve_data) {
466                 kfree(priv->curve_data);
467                 priv->curve_data = NULL;
468         }
469
470         printk(KERN_ERR "p54: eeprom parse failed!\n");
471         return err;
472 }
473
474 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
475 {
476         /* TODO: get the rssi_add & rssi_mul data from the eeprom */
477         return ((rssi * 0x83) / 64 - 400) / 4;
478 }
479
480 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
481 {
482         struct p54_common *priv = dev->priv;
483         struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
484         struct ieee80211_rx_status rx_status = {0};
485         u16 freq = le16_to_cpu(hdr->freq);
486         size_t header_len = sizeof(*hdr);
487         u32 tsf32;
488
489         if (!(hdr->magic & cpu_to_le16(0x0001))) {
490                 if (priv->filter_flags & FIF_FCSFAIL)
491                         rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
492                 else
493                         return 0;
494         }
495
496         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
497         rx_status.noise = priv->noise;
498         /* XX correct? */
499         rx_status.qual = (100 * hdr->rssi) / 127;
500         rx_status.rate_idx = (dev->conf.channel->band == IEEE80211_BAND_2GHZ ?
501                         hdr->rate : (hdr->rate - 4)) & 0xf;
502         rx_status.freq = freq;
503         rx_status.band =  dev->conf.channel->band;
504         rx_status.antenna = hdr->antenna;
505
506         tsf32 = le32_to_cpu(hdr->tsf32);
507         if (tsf32 < priv->tsf_low32)
508                 priv->tsf_high32++;
509         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
510         priv->tsf_low32 = tsf32;
511
512         rx_status.flag |= RX_FLAG_TSFT;
513
514         if (hdr->magic & cpu_to_le16(0x4000))
515                 header_len += hdr->align[0];
516
517         skb_pull(skb, header_len);
518         skb_trim(skb, le16_to_cpu(hdr->len));
519
520         ieee80211_rx_irqsafe(dev, skb, &rx_status);
521
522         return -1;
523 }
524
525 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
526 {
527         struct p54_common *priv = dev->priv;
528         int i;
529
530         for (i = 0; i < dev->queues; i++)
531                 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
532                         ieee80211_wake_queue(dev, i);
533 }
534
535 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
536 {
537         struct p54_common *priv = dev->priv;
538         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
539         struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
540         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
541         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
542         struct memrecord *range = NULL;
543         u32 freed = 0;
544         u32 last_addr = priv->rx_start;
545         unsigned long flags;
546
547         spin_lock_irqsave(&priv->tx_queue.lock, flags);
548         while (entry != (struct sk_buff *)&priv->tx_queue) {
549                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
550                 range = (void *)info->driver_data;
551                 if (range->start_addr == addr) {
552                         struct p54_control_hdr *entry_hdr;
553                         struct p54_tx_control_allocdata *entry_data;
554                         int pad = 0;
555
556                         if (entry->next != (struct sk_buff *)&priv->tx_queue) {
557                                 struct ieee80211_tx_info *ni;
558                                 struct memrecord *mr;
559
560                                 ni = IEEE80211_SKB_CB(entry->next);
561                                 mr = (struct memrecord *)ni->driver_data;
562                                 freed = mr->start_addr - last_addr;
563                         } else
564                                 freed = priv->rx_end - last_addr;
565
566                         last_addr = range->end_addr;
567                         __skb_unlink(entry, &priv->tx_queue);
568                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
569
570                         memset(&info->status, 0, sizeof(info->status));
571                         entry_hdr = (struct p54_control_hdr *) entry->data;
572                         entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
573                         if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
574                                 pad = entry_data->align[0];
575
576                         priv->tx_stats[entry_data->hw_queue].len--;
577                         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
578                                 if (!(payload->status & 0x01))
579                                         info->flags |= IEEE80211_TX_STAT_ACK;
580                                 else
581                                         info->status.excessive_retries = 1;
582                         }
583                         info->status.retry_count = payload->retries - 1;
584                         info->status.ack_signal = p54_rssi_to_dbm(dev,
585                                         le16_to_cpu(payload->ack_rssi));
586                         skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
587                         ieee80211_tx_status_irqsafe(dev, entry);
588                         goto out;
589                 } else
590                         last_addr = range->end_addr;
591                 entry = entry->next;
592         }
593         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
594
595 out:
596         if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
597             sizeof(struct p54_control_hdr))
598                 p54_wake_free_queues(dev);
599 }
600
601 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
602                                    struct sk_buff *skb)
603 {
604         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
605         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
606         struct p54_common *priv = dev->priv;
607
608         if (!priv->eeprom)
609                 return ;
610
611         memcpy(priv->eeprom, eeprom->data, le16_to_cpu(eeprom->len));
612
613         complete(&priv->eeprom_comp);
614 }
615
616 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
617 {
618         struct p54_common *priv = dev->priv;
619         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
620         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
621         u32 tsf32 = le32_to_cpu(stats->tsf32);
622
623         if (tsf32 < priv->tsf_low32)
624                 priv->tsf_high32++;
625         priv->tsf_low32 = tsf32;
626
627         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
628         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
629         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
630
631         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
632         complete(&priv->stats_comp);
633
634         mod_timer(&priv->stats_timer, jiffies + 5 * HZ);
635 }
636
637 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
638 {
639         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
640
641         switch (le16_to_cpu(hdr->type)) {
642         case P54_CONTROL_TYPE_TXDONE:
643                 p54_rx_frame_sent(dev, skb);
644                 break;
645         case P54_CONTROL_TYPE_BBP:
646                 break;
647         case P54_CONTROL_TYPE_STAT_READBACK:
648                 p54_rx_stats(dev, skb);
649                 break;
650         case P54_CONTROL_TYPE_EEPROM_READBACK:
651                 p54_rx_eeprom_readback(dev, skb);
652                 break;
653         default:
654                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
655                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
656                 break;
657         }
658
659         return 0;
660 }
661
662 /* returns zero if skb can be reused */
663 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
664 {
665         u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
666
667         if (type == 0x80)
668                 return p54_rx_control(dev, skb);
669         else
670                 return p54_rx_data(dev, skb);
671 }
672 EXPORT_SYMBOL_GPL(p54_rx);
673
674 /*
675  * So, the firmware is somewhat stupid and doesn't know what places in its
676  * memory incoming data should go to. By poking around in the firmware, we
677  * can find some unused memory to upload our packets to. However, data that we
678  * want the card to TX needs to stay intact until the card has told us that
679  * it is done with it. This function finds empty places we can upload to and
680  * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
681  * allocated areas.
682  */
683 static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
684                                struct p54_control_hdr *data, u32 len)
685 {
686         struct p54_common *priv = dev->priv;
687         struct sk_buff *entry = priv->tx_queue.next;
688         struct sk_buff *target_skb = NULL;
689         u32 last_addr = priv->rx_start;
690         u32 largest_hole = 0;
691         u32 target_addr = priv->rx_start;
692         unsigned long flags;
693         unsigned int left;
694         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
695
696         spin_lock_irqsave(&priv->tx_queue.lock, flags);
697         left = skb_queue_len(&priv->tx_queue);
698         while (left--) {
699                 u32 hole_size;
700                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
701                 struct memrecord *range = (void *)info->driver_data;
702                 hole_size = range->start_addr - last_addr;
703                 if (!target_skb && hole_size >= len) {
704                         target_skb = entry->prev;
705                         hole_size -= len;
706                         target_addr = last_addr;
707                 }
708                 largest_hole = max(largest_hole, hole_size);
709                 last_addr = range->end_addr;
710                 entry = entry->next;
711         }
712         if (!target_skb && priv->rx_end - last_addr >= len) {
713                 target_skb = priv->tx_queue.prev;
714                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
715                 if (!skb_queue_empty(&priv->tx_queue)) {
716                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
717                         struct memrecord *range = (void *)info->driver_data;
718                         target_addr = range->end_addr;
719                 }
720         } else
721                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
722
723         if (skb) {
724                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
725                 struct memrecord *range = (void *)info->driver_data;
726                 range->start_addr = target_addr;
727                 range->end_addr = target_addr + len;
728                 __skb_queue_after(&priv->tx_queue, target_skb, skb);
729                 if (largest_hole < priv->rx_mtu + priv->headroom +
730                                    priv->tailroom +
731                                    sizeof(struct p54_control_hdr))
732                         ieee80211_stop_queues(dev);
733         }
734         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
735
736         data->req_id = cpu_to_le32(target_addr + priv->headroom);
737 }
738
739 int p54_read_eeprom(struct ieee80211_hw *dev)
740 {
741         struct p54_common *priv = dev->priv;
742         struct p54_control_hdr *hdr = NULL;
743         struct p54_eeprom_lm86 *eeprom_hdr;
744         size_t eeprom_size = 0x2020, offset = 0, blocksize;
745         int ret = -ENOMEM;
746         void *eeprom = NULL;
747
748         hdr = (struct p54_control_hdr *)kzalloc(sizeof(*hdr) +
749                 sizeof(*eeprom_hdr) + EEPROM_READBACK_LEN, GFP_KERNEL);
750         if (!hdr)
751                 goto free;
752
753         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
754         if (!priv->eeprom)
755                 goto free;
756
757         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
758         if (!eeprom)
759                 goto free;
760
761         hdr->magic1 = cpu_to_le16(0x8000);
762         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
763         hdr->retry1 = hdr->retry2 = 0;
764         eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
765
766         while (eeprom_size) {
767                 blocksize = min(eeprom_size, (size_t)EEPROM_READBACK_LEN);
768                 hdr->len = cpu_to_le16(blocksize + sizeof(*eeprom_hdr));
769                 eeprom_hdr->offset = cpu_to_le16(offset);
770                 eeprom_hdr->len = cpu_to_le16(blocksize);
771                 p54_assign_address(dev, NULL, hdr, le16_to_cpu(hdr->len) +
772                                    sizeof(*hdr));
773                 priv->tx(dev, hdr, le16_to_cpu(hdr->len) + sizeof(*hdr), 0);
774
775                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
776                         printk(KERN_ERR "%s: device does not respond!\n",
777                                 wiphy_name(dev->wiphy));
778                         ret = -EBUSY;
779                         goto free;
780                 }
781
782                 memcpy(eeprom + offset, priv->eeprom, blocksize);
783                 offset += blocksize;
784                 eeprom_size -= blocksize;
785         }
786
787         ret = p54_parse_eeprom(dev, eeprom, offset);
788 free:
789         kfree(priv->eeprom);
790         priv->eeprom = NULL;
791         kfree(hdr);
792         kfree(eeprom);
793
794         return ret;
795 }
796 EXPORT_SYMBOL_GPL(p54_read_eeprom);
797
798 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
799 {
800         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
801         struct ieee80211_tx_queue_stats *current_queue;
802         struct p54_common *priv = dev->priv;
803         struct p54_control_hdr *hdr;
804         struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
805         struct p54_tx_control_allocdata *txhdr;
806         size_t padding, len;
807         u8 rate;
808         u8 cts_rate = 0x20;
809
810         current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
811         if (unlikely(current_queue->len > current_queue->limit))
812                 return NETDEV_TX_BUSY;
813         current_queue->len++;
814         current_queue->count++;
815         if (current_queue->len == current_queue->limit)
816                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
817
818         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
819         len = skb->len;
820
821         txhdr = (struct p54_tx_control_allocdata *)
822                         skb_push(skb, sizeof(*txhdr) + padding);
823         hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
824
825         if (padding)
826                 hdr->magic1 = cpu_to_le16(0x4010);
827         else
828                 hdr->magic1 = cpu_to_le16(0x0010);
829         hdr->len = cpu_to_le16(len);
830         hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
831         hdr->retry1 = hdr->retry2 = info->control.retry_limit;
832
833         /* TODO: add support for alternate retry TX rates */
834         rate = ieee80211_get_tx_rate(dev, info)->hw_value;
835         if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
836                 rate |= 0x10;
837                 cts_rate |= 0x10;
838         }
839         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
840                 rate |= 0x40;
841                 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
842         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
843                 rate |= 0x20;
844                 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
845         }
846         memset(txhdr->rateset, rate, 8);
847         txhdr->key_type = 0;
848         txhdr->key_len = 0;
849         txhdr->hw_queue = skb_get_queue_mapping(skb) + 4;
850         txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
851                 2 : info->antenna_sel_tx - 1;
852         txhdr->output_power = priv->output_power;
853         txhdr->cts_rate = (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
854                           0 : cts_rate;
855         if (padding)
856                 txhdr->align[0] = padding;
857
858         /* FIXME: The sequence that follows is needed for this driver to
859          * work with mac80211 since "mac80211: fix TX sequence numbers".
860          * As with the temporary code in rt2x00, changes will be needed
861          * to get proper sequence numbers on beacons. In addition, this
862          * patch places the sequence number in the hardware state, which
863          * limits us to a single virtual state.
864          */
865         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
866                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
867                         priv->seqno += 0x10;
868                 ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
869                 ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
870         }
871         /* modifies skb->cb and with it info, so must be last! */
872         p54_assign_address(dev, skb, hdr, skb->len);
873
874         priv->tx(dev, hdr, skb->len, 0);
875         return 0;
876 }
877
878 static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
879                           const u8 *bssid)
880 {
881         struct p54_common *priv = dev->priv;
882         struct p54_control_hdr *hdr;
883         struct p54_tx_control_filter *filter;
884         size_t data_len;
885
886         hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
887                       priv->tx_hdr_len, GFP_ATOMIC);
888         if (!hdr)
889                 return -ENOMEM;
890
891         hdr = (void *)hdr + priv->tx_hdr_len;
892
893         filter = (struct p54_tx_control_filter *) hdr->data;
894         hdr->magic1 = cpu_to_le16(0x8001);
895         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
896
897         priv->filter_type = filter->filter_type = cpu_to_le16(filter_type);
898         memcpy(filter->mac_addr, priv->mac_addr, ETH_ALEN);
899         if (!bssid)
900                 memset(filter->bssid, ~0, ETH_ALEN);
901         else
902                 memcpy(filter->bssid, bssid, ETH_ALEN);
903
904         filter->rx_antenna = priv->rx_antenna;
905
906         if (priv->fw_var < 0x500) {
907                 data_len = P54_TX_CONTROL_FILTER_V1_LEN;
908                 filter->v1.basic_rate_mask = cpu_to_le32(0x15F);
909                 filter->v1.rx_addr = cpu_to_le32(priv->rx_end);
910                 filter->v1.max_rx = cpu_to_le16(priv->rx_mtu);
911                 filter->v1.rxhw = cpu_to_le16(priv->rxhw);
912                 filter->v1.wakeup_timer = cpu_to_le16(500);
913         } else {
914                 data_len = P54_TX_CONTROL_FILTER_V2_LEN;
915                 filter->v2.rx_addr = cpu_to_le32(priv->rx_end);
916                 filter->v2.max_rx = cpu_to_le16(priv->rx_mtu);
917                 filter->v2.rxhw = cpu_to_le16(priv->rxhw);
918                 filter->v2.timer = cpu_to_le16(1000);
919         }
920
921         hdr->len = cpu_to_le16(data_len);
922         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
923         priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
924         return 0;
925 }
926
927 static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
928 {
929         struct p54_common *priv = dev->priv;
930         struct p54_control_hdr *hdr;
931         struct p54_tx_control_channel *chan;
932         unsigned int i;
933         size_t data_len;
934         void *entry;
935
936         hdr = kzalloc(sizeof(*hdr) + sizeof(*chan) +
937                       priv->tx_hdr_len, GFP_KERNEL);
938         if (!hdr)
939                 return -ENOMEM;
940
941         hdr = (void *)hdr + priv->tx_hdr_len;
942
943         chan = (struct p54_tx_control_channel *) hdr->data;
944
945         hdr->magic1 = cpu_to_le16(0x8001);
946
947         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
948
949         chan->flags = cpu_to_le16(0x1);
950         chan->dwell = cpu_to_le16(0x0);
951
952         for (i = 0; i < priv->iq_autocal_len; i++) {
953                 if (priv->iq_autocal[i].freq != freq)
954                         continue;
955
956                 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
957                        sizeof(*priv->iq_autocal));
958                 break;
959         }
960         if (i == priv->iq_autocal_len)
961                 goto err;
962
963         for (i = 0; i < priv->output_limit_len; i++) {
964                 if (priv->output_limit[i].freq != freq)
965                         continue;
966
967                 chan->val_barker = 0x38;
968                 chan->val_bpsk = chan->dup_bpsk =
969                         priv->output_limit[i].val_bpsk;
970                 chan->val_qpsk = chan->dup_qpsk =
971                         priv->output_limit[i].val_qpsk;
972                 chan->val_16qam = chan->dup_16qam =
973                         priv->output_limit[i].val_16qam;
974                 chan->val_64qam = chan->dup_64qam =
975                         priv->output_limit[i].val_64qam;
976                 break;
977         }
978         if (i == priv->output_limit_len)
979                 goto err;
980
981         entry = priv->curve_data->data;
982         for (i = 0; i < priv->curve_data->channels; i++) {
983                 if (*((__le16 *)entry) != freq) {
984                         entry += sizeof(__le16);
985                         entry += sizeof(struct p54_pa_curve_data_sample) *
986                                  priv->curve_data->points_per_channel;
987                         continue;
988                 }
989
990                 entry += sizeof(__le16);
991                 chan->pa_points_per_curve =
992                         min(priv->curve_data->points_per_channel, (u8) 8);
993
994                 memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
995                        chan->pa_points_per_curve);
996                 break;
997         }
998
999         if (priv->fw_var < 0x500) {
1000                 data_len = P54_TX_CONTROL_CHANNEL_V1_LEN;
1001                 chan->v1.rssical_mul = cpu_to_le16(130);
1002                 chan->v1.rssical_add = cpu_to_le16(0xfe70);
1003         } else {
1004                 data_len = P54_TX_CONTROL_CHANNEL_V2_LEN;
1005                 chan->v2.rssical_mul = cpu_to_le16(130);
1006                 chan->v2.rssical_add = cpu_to_le16(0xfe70);
1007                 chan->v2.basic_rate_mask = cpu_to_le32(0x15f);
1008         }
1009
1010         hdr->len = cpu_to_le16(data_len);
1011         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
1012         priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
1013         return 0;
1014
1015  err:
1016         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1017         kfree(hdr);
1018         return -EINVAL;
1019 }
1020
1021 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1022 {
1023         struct p54_common *priv = dev->priv;
1024         struct p54_control_hdr *hdr;
1025         struct p54_tx_control_led *led;
1026
1027         hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
1028                       priv->tx_hdr_len, GFP_KERNEL);
1029         if (!hdr)
1030                 return -ENOMEM;
1031
1032         hdr = (void *)hdr + priv->tx_hdr_len;
1033         hdr->magic1 = cpu_to_le16(0x8001);
1034         hdr->len = cpu_to_le16(sizeof(*led));
1035         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
1036         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led));
1037
1038         led = (struct p54_tx_control_led *) hdr->data;
1039         led->mode = cpu_to_le16(mode);
1040         led->led_permanent = cpu_to_le16(link);
1041         led->led_temporary = cpu_to_le16(act);
1042         led->duration = cpu_to_le16(1000);
1043
1044         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
1045
1046         return 0;
1047 }
1048
1049 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1050 do {                                                            \
1051         queue.aifs = cpu_to_le16(ai_fs);                        \
1052         queue.cwmin = cpu_to_le16(cw_min);                      \
1053         queue.cwmax = cpu_to_le16(cw_max);                      \
1054         queue.txop = cpu_to_le16(_txop);                        \
1055 } while(0)
1056
1057 static void p54_init_vdcf(struct ieee80211_hw *dev)
1058 {
1059         struct p54_common *priv = dev->priv;
1060         struct p54_control_hdr *hdr;
1061         struct p54_tx_control_vdcf *vdcf;
1062
1063         /* all USB V1 adapters need a extra headroom */
1064         hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1065         hdr->magic1 = cpu_to_le16(0x8001);
1066         hdr->len = cpu_to_le16(sizeof(*vdcf));
1067         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
1068         hdr->req_id = cpu_to_le32(priv->rx_start);
1069
1070         vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1071
1072         P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 47);
1073         P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
1074         P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
1075         P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
1076 }
1077
1078 static void p54_set_vdcf(struct ieee80211_hw *dev)
1079 {
1080         struct p54_common *priv = dev->priv;
1081         struct p54_control_hdr *hdr;
1082         struct p54_tx_control_vdcf *vdcf;
1083
1084         hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1085
1086         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf));
1087
1088         vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1089
1090         if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
1091                 vdcf->slottime = 9;
1092                 vdcf->magic1 = 0x10;
1093                 vdcf->magic2 = 0x00;
1094         } else {
1095                 vdcf->slottime = 20;
1096                 vdcf->magic1 = 0x0a;
1097                 vdcf->magic2 = 0x06;
1098         }
1099
1100         /* (see prism54/isl_oid.h for further details) */
1101         vdcf->frameburst = cpu_to_le16(0);
1102
1103         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
1104 }
1105
1106 static int p54_start(struct ieee80211_hw *dev)
1107 {
1108         struct p54_common *priv = dev->priv;
1109         int err;
1110
1111         if (!priv->cached_vdcf) {
1112                 priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf)+
1113                         priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1114                         GFP_KERNEL);
1115
1116                 if (!priv->cached_vdcf)
1117                         return -ENOMEM;
1118         }
1119
1120         if (!priv->cached_stats) {
1121                 priv->cached_stats = kzalloc(sizeof(struct p54_statistics) +
1122                         priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1123                         GFP_KERNEL);
1124
1125                 if (!priv->cached_stats) {
1126                         kfree(priv->cached_vdcf);
1127                         priv->cached_vdcf = NULL;
1128                         return -ENOMEM;
1129                 }
1130         }
1131
1132         err = priv->open(dev);
1133         if (!err)
1134                 priv->mode = NL80211_IFTYPE_MONITOR;
1135
1136         p54_init_vdcf(dev);
1137
1138         mod_timer(&priv->stats_timer, jiffies + HZ);
1139         return err;
1140 }
1141
1142 static void p54_stop(struct ieee80211_hw *dev)
1143 {
1144         struct p54_common *priv = dev->priv;
1145         struct sk_buff *skb;
1146
1147         del_timer(&priv->stats_timer);
1148         while ((skb = skb_dequeue(&priv->tx_queue)))
1149                 kfree_skb(skb);
1150         priv->stop(dev);
1151         priv->tsf_high32 = priv->tsf_low32 = 0;
1152         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1153 }
1154
1155 static int p54_add_interface(struct ieee80211_hw *dev,
1156                              struct ieee80211_if_init_conf *conf)
1157 {
1158         struct p54_common *priv = dev->priv;
1159
1160         if (priv->mode != NL80211_IFTYPE_MONITOR)
1161                 return -EOPNOTSUPP;
1162
1163         switch (conf->type) {
1164         case NL80211_IFTYPE_STATION:
1165                 priv->mode = conf->type;
1166                 break;
1167         default:
1168                 return -EOPNOTSUPP;
1169         }
1170
1171         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1172
1173         p54_set_filter(dev, 0, NULL);
1174
1175         switch (conf->type) {
1176         case NL80211_IFTYPE_STATION:
1177                 p54_set_filter(dev, 1, NULL);
1178                 break;
1179         default:
1180                 BUG();  /* impossible */
1181                 break;
1182         }
1183
1184         p54_set_leds(dev, 1, 0, 0);
1185
1186         return 0;
1187 }
1188
1189 static void p54_remove_interface(struct ieee80211_hw *dev,
1190                                  struct ieee80211_if_init_conf *conf)
1191 {
1192         struct p54_common *priv = dev->priv;
1193         priv->mode = NL80211_IFTYPE_MONITOR;
1194         memset(priv->mac_addr, 0, ETH_ALEN);
1195         p54_set_filter(dev, 0, NULL);
1196 }
1197
1198 static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1199 {
1200         int ret;
1201         struct p54_common *priv = dev->priv;
1202
1203         mutex_lock(&priv->conf_mutex);
1204         priv->rx_antenna = (conf->antenna_sel_rx == 0) ?
1205                 2 : conf->antenna_sel_tx - 1;
1206         priv->output_power = conf->power_level << 2;
1207         ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
1208         p54_set_vdcf(dev);
1209         mutex_unlock(&priv->conf_mutex);
1210         return ret;
1211 }
1212
1213 static int p54_config_interface(struct ieee80211_hw *dev,
1214                                 struct ieee80211_vif *vif,
1215                                 struct ieee80211_if_conf *conf)
1216 {
1217         struct p54_common *priv = dev->priv;
1218
1219         mutex_lock(&priv->conf_mutex);
1220         p54_set_filter(dev, 0, conf->bssid);
1221         p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
1222         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1223         mutex_unlock(&priv->conf_mutex);
1224         return 0;
1225 }
1226
1227 static void p54_configure_filter(struct ieee80211_hw *dev,
1228                                  unsigned int changed_flags,
1229                                  unsigned int *total_flags,
1230                                  int mc_count, struct dev_mc_list *mclist)
1231 {
1232         struct p54_common *priv = dev->priv;
1233
1234         *total_flags &= FIF_BCN_PRBRESP_PROMISC |
1235                         FIF_PROMISC_IN_BSS |
1236                         FIF_FCSFAIL;
1237
1238         priv->filter_flags = *total_flags;
1239
1240         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1241                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1242                         p54_set_filter(dev, le16_to_cpu(priv->filter_type),
1243                                  NULL);
1244                 else
1245                         p54_set_filter(dev, le16_to_cpu(priv->filter_type),
1246                                  priv->bssid);
1247         }
1248
1249         if (changed_flags & FIF_PROMISC_IN_BSS) {
1250                 if (*total_flags & FIF_PROMISC_IN_BSS)
1251                         p54_set_filter(dev, le16_to_cpu(priv->filter_type) |
1252                                 0x8, NULL);
1253                 else
1254                         p54_set_filter(dev, le16_to_cpu(priv->filter_type) &
1255                                 ~0x8, priv->bssid);
1256         }
1257 }
1258
1259 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1260                        const struct ieee80211_tx_queue_params *params)
1261 {
1262         struct p54_common *priv = dev->priv;
1263         struct p54_tx_control_vdcf *vdcf;
1264
1265         vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
1266                 ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
1267
1268         if ((params) && !(queue > 4)) {
1269                 P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
1270                         params->cw_min, params->cw_max, params->txop);
1271         } else
1272                 return -EINVAL;
1273
1274         p54_set_vdcf(dev);
1275
1276         return 0;
1277 }
1278
1279 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
1280 {
1281         struct p54_common *priv = dev->priv;
1282         struct p54_control_hdr *hdr;
1283         struct p54_tx_control_xbow_synth *xbow;
1284
1285         hdr = kzalloc(sizeof(*hdr) + sizeof(*xbow) +
1286                       priv->tx_hdr_len, GFP_KERNEL);
1287         if (!hdr)
1288                 return -ENOMEM;
1289
1290         hdr = (void *)hdr + priv->tx_hdr_len;
1291         hdr->magic1 = cpu_to_le16(0x8001);
1292         hdr->len = cpu_to_le16(sizeof(*xbow));
1293         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_XBOW_SYNTH_CFG);
1294         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*xbow));
1295
1296         xbow = (struct p54_tx_control_xbow_synth *) hdr->data;
1297         xbow->magic1 = cpu_to_le16(0x1);
1298         xbow->magic2 = cpu_to_le16(0x2);
1299         xbow->freq = cpu_to_le16(5390);
1300
1301         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*xbow), 1);
1302
1303         return 0;
1304 }
1305
1306 static void p54_statistics_timer(unsigned long data)
1307 {
1308         struct ieee80211_hw *dev = (struct ieee80211_hw *) data;
1309         struct p54_common *priv = dev->priv;
1310         struct p54_control_hdr *hdr;
1311         struct p54_statistics *stats;
1312
1313         BUG_ON(!priv->cached_stats);
1314
1315         hdr = (void *)priv->cached_stats + priv->tx_hdr_len;
1316         hdr->magic1 = cpu_to_le16(0x8000);
1317         hdr->len = cpu_to_le16(sizeof(*stats));
1318         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_STAT_READBACK);
1319         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*stats));
1320
1321         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*stats), 0);
1322 }
1323
1324 static int p54_get_stats(struct ieee80211_hw *dev,
1325                          struct ieee80211_low_level_stats *stats)
1326 {
1327         struct p54_common *priv = dev->priv;
1328
1329         del_timer(&priv->stats_timer);
1330         p54_statistics_timer((unsigned long)dev);
1331
1332         if (!wait_for_completion_interruptible_timeout(&priv->stats_comp, HZ)) {
1333                 printk(KERN_ERR "%s: device does not respond!\n",
1334                         wiphy_name(dev->wiphy));
1335                 return -EBUSY;
1336         }
1337
1338         memcpy(stats, &priv->stats, sizeof(*stats));
1339
1340         return 0;
1341 }
1342
1343 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1344                             struct ieee80211_tx_queue_stats *stats)
1345 {
1346         struct p54_common *priv = dev->priv;
1347
1348         memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1349
1350         return 0;
1351 }
1352
1353 static const struct ieee80211_ops p54_ops = {
1354         .tx                     = p54_tx,
1355         .start                  = p54_start,
1356         .stop                   = p54_stop,
1357         .add_interface          = p54_add_interface,
1358         .remove_interface       = p54_remove_interface,
1359         .config                 = p54_config,
1360         .config_interface       = p54_config_interface,
1361         .configure_filter       = p54_configure_filter,
1362         .conf_tx                = p54_conf_tx,
1363         .get_stats              = p54_get_stats,
1364         .get_tx_stats           = p54_get_tx_stats
1365 };
1366
1367 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
1368 {
1369         struct ieee80211_hw *dev;
1370         struct p54_common *priv;
1371
1372         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
1373         if (!dev)
1374                 return NULL;
1375
1376         priv = dev->priv;
1377         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1378         skb_queue_head_init(&priv->tx_queue);
1379         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
1380                      IEEE80211_HW_RX_INCLUDES_FCS |
1381                      IEEE80211_HW_SIGNAL_DBM |
1382                      IEEE80211_HW_NOISE_DBM;
1383
1384         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1385
1386         dev->channel_change_time = 1000;        /* TODO: find actual value */
1387
1388         priv->tx_stats[0].limit = 1;
1389         priv->tx_stats[1].limit = 1;
1390         priv->tx_stats[2].limit = 1;
1391         priv->tx_stats[3].limit = 1;
1392         priv->tx_stats[4].limit = 5;
1393         dev->queues = 1;
1394         priv->noise = -94;
1395         dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
1396                                  sizeof(struct p54_tx_control_allocdata);
1397
1398         mutex_init(&priv->conf_mutex);
1399         init_completion(&priv->eeprom_comp);
1400         init_completion(&priv->stats_comp);
1401         setup_timer(&priv->stats_timer, p54_statistics_timer,
1402                 (unsigned long)dev);
1403
1404         return dev;
1405 }
1406 EXPORT_SYMBOL_GPL(p54_init_common);
1407
1408 void p54_free_common(struct ieee80211_hw *dev)
1409 {
1410         struct p54_common *priv = dev->priv;
1411         kfree(priv->cached_stats);
1412         kfree(priv->iq_autocal);
1413         kfree(priv->output_limit);
1414         kfree(priv->curve_data);
1415         kfree(priv->cached_vdcf);
1416 }
1417 EXPORT_SYMBOL_GPL(p54_free_common);
1418
1419 static int __init p54_init(void)
1420 {
1421         return 0;
1422 }
1423
1424 static void __exit p54_exit(void)
1425 {
1426 }
1427
1428 module_init(p54_init);
1429 module_exit(p54_exit);