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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
[deliverable/linux.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", "Indigo?", "Duette",
310 "Frisbee", "Xbow", "Longbow" };
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 DECLARE_MAC_BUF(mac);
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 priv->rxhw = le16_to_cpu(exp_if->variant) & 0x07;
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 switch (priv->rxhw) {
431 case 4: /* XBow */
432 p54_init_xbow_synth(dev);
433 case 1: /* Indigo? */
434 case 2: /* Duette */
435 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
436 case 3: /* Frisbee */
437 case 5: /* Longbow */
438 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
439 break;
440 default:
441 printk(KERN_ERR "%s: unsupported RF-Chip\n",
442 wiphy_name(dev->wiphy));
443 err = -EINVAL;
444 goto err;
445 }
446
447 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
448 u8 perm_addr[ETH_ALEN];
449
450 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
451 wiphy_name(dev->wiphy));
452 random_ether_addr(perm_addr);
453 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
454 }
455
456 printk(KERN_INFO "%s: hwaddr %s, MAC:isl38%02x RF:%s\n",
457 wiphy_name(dev->wiphy),
458 print_mac(mac, dev->wiphy->perm_addr),
459 priv->version, p54_rf_chips[priv->rxhw]);
460
461 return 0;
462
463 err:
464 if (priv->iq_autocal) {
465 kfree(priv->iq_autocal);
466 priv->iq_autocal = NULL;
467 }
468
469 if (priv->output_limit) {
470 kfree(priv->output_limit);
471 priv->output_limit = NULL;
472 }
473
474 if (priv->curve_data) {
475 kfree(priv->curve_data);
476 priv->curve_data = NULL;
477 }
478
479 printk(KERN_ERR "p54: eeprom parse failed!\n");
480 return err;
481 }
482 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
483
484 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
485 {
486 /* TODO: get the rssi_add & rssi_mul data from the eeprom */
487 return ((rssi * 0x83) / 64 - 400) / 4;
488 }
489
490 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
491 {
492 struct p54_common *priv = dev->priv;
493 struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
494 struct ieee80211_rx_status rx_status = {0};
495 u16 freq = le16_to_cpu(hdr->freq);
496 size_t header_len = sizeof(*hdr);
497 u32 tsf32;
498
499 if (!(hdr->magic & cpu_to_le16(0x0001))) {
500 if (priv->filter_flags & FIF_FCSFAIL)
501 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
502 else
503 return 0;
504 }
505
506 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
507 rx_status.noise = priv->noise;
508 /* XX correct? */
509 rx_status.qual = (100 * hdr->rssi) / 127;
510 rx_status.rate_idx = (dev->conf.channel->band == IEEE80211_BAND_2GHZ ?
511 hdr->rate : (hdr->rate - 4)) & 0xf;
512 rx_status.freq = freq;
513 rx_status.band = dev->conf.channel->band;
514 rx_status.antenna = hdr->antenna;
515
516 tsf32 = le32_to_cpu(hdr->tsf32);
517 if (tsf32 < priv->tsf_low32)
518 priv->tsf_high32++;
519 rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
520 priv->tsf_low32 = tsf32;
521
522 rx_status.flag |= RX_FLAG_TSFT;
523
524 if (hdr->magic & cpu_to_le16(0x4000))
525 header_len += hdr->align[0];
526
527 skb_pull(skb, header_len);
528 skb_trim(skb, le16_to_cpu(hdr->len));
529
530 ieee80211_rx_irqsafe(dev, skb, &rx_status);
531
532 return -1;
533 }
534
535 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
536 {
537 struct p54_common *priv = dev->priv;
538 int i;
539
540 for (i = 0; i < dev->queues; i++)
541 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
542 ieee80211_wake_queue(dev, i);
543 }
544
545 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
546 {
547 struct p54_common *priv = dev->priv;
548 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
549 struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
550 struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
551 u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
552 struct memrecord *range = NULL;
553 u32 freed = 0;
554 u32 last_addr = priv->rx_start;
555 unsigned long flags;
556
557 spin_lock_irqsave(&priv->tx_queue.lock, flags);
558 while (entry != (struct sk_buff *)&priv->tx_queue) {
559 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
560 range = (void *)info->driver_data;
561 if (range->start_addr == addr) {
562 struct p54_control_hdr *entry_hdr;
563 struct p54_tx_control_allocdata *entry_data;
564 int pad = 0;
565
566 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
567 struct ieee80211_tx_info *ni;
568 struct memrecord *mr;
569
570 ni = IEEE80211_SKB_CB(entry->next);
571 mr = (struct memrecord *)ni->driver_data;
572 freed = mr->start_addr - last_addr;
573 } else
574 freed = priv->rx_end - last_addr;
575
576 last_addr = range->end_addr;
577 __skb_unlink(entry, &priv->tx_queue);
578 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
579
580 memset(&info->status, 0, sizeof(info->status));
581 entry_hdr = (struct p54_control_hdr *) entry->data;
582 entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
583 if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
584 pad = entry_data->align[0];
585
586 priv->tx_stats[entry_data->hw_queue].len--;
587 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
588 if (!(payload->status & 0x01))
589 info->flags |= IEEE80211_TX_STAT_ACK;
590 else
591 info->status.excessive_retries = 1;
592 }
593 info->status.retry_count = payload->retries - 1;
594 info->status.ack_signal = p54_rssi_to_dbm(dev,
595 le16_to_cpu(payload->ack_rssi));
596 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
597 ieee80211_tx_status_irqsafe(dev, entry);
598 goto out;
599 } else
600 last_addr = range->end_addr;
601 entry = entry->next;
602 }
603 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
604
605 out:
606 if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
607 sizeof(struct p54_control_hdr))
608 p54_wake_free_queues(dev);
609 }
610
611 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
612 struct sk_buff *skb)
613 {
614 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
615 struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
616 struct p54_common *priv = dev->priv;
617
618 if (!priv->eeprom)
619 return ;
620
621 memcpy(priv->eeprom, eeprom->data, le16_to_cpu(eeprom->len));
622
623 complete(&priv->eeprom_comp);
624 }
625
626 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
627 {
628 struct p54_common *priv = dev->priv;
629 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
630 struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
631 u32 tsf32 = le32_to_cpu(stats->tsf32);
632
633 if (tsf32 < priv->tsf_low32)
634 priv->tsf_high32++;
635 priv->tsf_low32 = tsf32;
636
637 priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
638 priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
639 priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
640
641 priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
642 complete(&priv->stats_comp);
643
644 mod_timer(&priv->stats_timer, jiffies + 5 * HZ);
645 }
646
647 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
648 {
649 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
650
651 switch (le16_to_cpu(hdr->type)) {
652 case P54_CONTROL_TYPE_TXDONE:
653 p54_rx_frame_sent(dev, skb);
654 break;
655 case P54_CONTROL_TYPE_BBP:
656 break;
657 case P54_CONTROL_TYPE_STAT_READBACK:
658 p54_rx_stats(dev, skb);
659 break;
660 case P54_CONTROL_TYPE_EEPROM_READBACK:
661 p54_rx_eeprom_readback(dev, skb);
662 break;
663 default:
664 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
665 wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
666 break;
667 }
668
669 return 0;
670 }
671
672 /* returns zero if skb can be reused */
673 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
674 {
675 u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
676
677 if (type == 0x80)
678 return p54_rx_control(dev, skb);
679 else
680 return p54_rx_data(dev, skb);
681 }
682 EXPORT_SYMBOL_GPL(p54_rx);
683
684 /*
685 * So, the firmware is somewhat stupid and doesn't know what places in its
686 * memory incoming data should go to. By poking around in the firmware, we
687 * can find some unused memory to upload our packets to. However, data that we
688 * want the card to TX needs to stay intact until the card has told us that
689 * it is done with it. This function finds empty places we can upload to and
690 * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
691 * allocated areas.
692 */
693 static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
694 struct p54_control_hdr *data, u32 len)
695 {
696 struct p54_common *priv = dev->priv;
697 struct sk_buff *entry = priv->tx_queue.next;
698 struct sk_buff *target_skb = NULL;
699 u32 last_addr = priv->rx_start;
700 u32 largest_hole = 0;
701 u32 target_addr = priv->rx_start;
702 unsigned long flags;
703 unsigned int left;
704 len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
705
706 spin_lock_irqsave(&priv->tx_queue.lock, flags);
707 left = skb_queue_len(&priv->tx_queue);
708 while (left--) {
709 u32 hole_size;
710 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
711 struct memrecord *range = (void *)info->driver_data;
712 hole_size = range->start_addr - last_addr;
713 if (!target_skb && hole_size >= len) {
714 target_skb = entry->prev;
715 hole_size -= len;
716 target_addr = last_addr;
717 }
718 largest_hole = max(largest_hole, hole_size);
719 last_addr = range->end_addr;
720 entry = entry->next;
721 }
722 if (!target_skb && priv->rx_end - last_addr >= len) {
723 target_skb = priv->tx_queue.prev;
724 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
725 if (!skb_queue_empty(&priv->tx_queue)) {
726 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
727 struct memrecord *range = (void *)info->driver_data;
728 target_addr = range->end_addr;
729 }
730 } else
731 largest_hole = max(largest_hole, priv->rx_end - last_addr);
732
733 if (skb) {
734 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
735 struct memrecord *range = (void *)info->driver_data;
736 range->start_addr = target_addr;
737 range->end_addr = target_addr + len;
738 __skb_queue_after(&priv->tx_queue, target_skb, skb);
739 if (largest_hole < priv->rx_mtu + priv->headroom +
740 priv->tailroom +
741 sizeof(struct p54_control_hdr))
742 ieee80211_stop_queues(dev);
743 }
744 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
745
746 data->req_id = cpu_to_le32(target_addr + priv->headroom);
747 }
748
749 int p54_read_eeprom(struct ieee80211_hw *dev)
750 {
751 struct p54_common *priv = dev->priv;
752 struct p54_control_hdr *hdr = NULL;
753 struct p54_eeprom_lm86 *eeprom_hdr;
754 size_t eeprom_size = 0x2020, offset = 0, blocksize;
755 int ret = -ENOMEM;
756 void *eeprom = NULL;
757
758 hdr = (struct p54_control_hdr *)kzalloc(sizeof(*hdr) +
759 sizeof(*eeprom_hdr) + EEPROM_READBACK_LEN, GFP_KERNEL);
760 if (!hdr)
761 goto free;
762
763 priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
764 if (!priv->eeprom)
765 goto free;
766
767 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
768 if (!eeprom)
769 goto free;
770
771 hdr->magic1 = cpu_to_le16(0x8000);
772 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
773 hdr->retry1 = hdr->retry2 = 0;
774 eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
775
776 while (eeprom_size) {
777 blocksize = min(eeprom_size, (size_t)EEPROM_READBACK_LEN);
778 hdr->len = cpu_to_le16(blocksize + sizeof(*eeprom_hdr));
779 eeprom_hdr->offset = cpu_to_le16(offset);
780 eeprom_hdr->len = cpu_to_le16(blocksize);
781 p54_assign_address(dev, NULL, hdr, le16_to_cpu(hdr->len) +
782 sizeof(*hdr));
783 priv->tx(dev, hdr, le16_to_cpu(hdr->len) + sizeof(*hdr), 0);
784
785 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
786 printk(KERN_ERR "%s: device does not respond!\n",
787 wiphy_name(dev->wiphy));
788 ret = -EBUSY;
789 goto free;
790 }
791
792 memcpy(eeprom + offset, priv->eeprom, blocksize);
793 offset += blocksize;
794 eeprom_size -= blocksize;
795 }
796
797 ret = p54_parse_eeprom(dev, eeprom, offset);
798 free:
799 kfree(priv->eeprom);
800 priv->eeprom = NULL;
801 kfree(hdr);
802 kfree(eeprom);
803
804 return ret;
805 }
806 EXPORT_SYMBOL_GPL(p54_read_eeprom);
807
808 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
809 {
810 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
811 struct ieee80211_tx_queue_stats *current_queue;
812 struct p54_common *priv = dev->priv;
813 struct p54_control_hdr *hdr;
814 struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
815 struct p54_tx_control_allocdata *txhdr;
816 size_t padding, len;
817 u8 rate;
818 u8 cts_rate = 0x20;
819
820 current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
821 if (unlikely(current_queue->len > current_queue->limit))
822 return NETDEV_TX_BUSY;
823 current_queue->len++;
824 current_queue->count++;
825 if (current_queue->len == current_queue->limit)
826 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
827
828 padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
829 len = skb->len;
830
831 txhdr = (struct p54_tx_control_allocdata *)
832 skb_push(skb, sizeof(*txhdr) + padding);
833 hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
834
835 if (padding)
836 hdr->magic1 = cpu_to_le16(0x4010);
837 else
838 hdr->magic1 = cpu_to_le16(0x0010);
839 hdr->len = cpu_to_le16(len);
840 hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
841 hdr->retry1 = hdr->retry2 = info->control.retry_limit;
842
843 /* TODO: add support for alternate retry TX rates */
844 rate = ieee80211_get_tx_rate(dev, info)->hw_value;
845 if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
846 rate |= 0x10;
847 cts_rate |= 0x10;
848 }
849 if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
850 rate |= 0x40;
851 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
852 } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
853 rate |= 0x20;
854 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
855 }
856 memset(txhdr->rateset, rate, 8);
857 txhdr->key_type = 0;
858 txhdr->key_len = 0;
859 txhdr->hw_queue = skb_get_queue_mapping(skb) + 4;
860 txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
861 2 : info->antenna_sel_tx - 1;
862 txhdr->output_power = priv->output_power;
863 txhdr->cts_rate = (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
864 0 : cts_rate;
865 if (padding)
866 txhdr->align[0] = padding;
867
868 /* FIXME: The sequence that follows is needed for this driver to
869 * work with mac80211 since "mac80211: fix TX sequence numbers".
870 * As with the temporary code in rt2x00, changes will be needed
871 * to get proper sequence numbers on beacons. In addition, this
872 * patch places the sequence number in the hardware state, which
873 * limits us to a single virtual state.
874 */
875 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
876 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
877 priv->seqno += 0x10;
878 ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
879 ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
880 }
881 /* modifies skb->cb and with it info, so must be last! */
882 p54_assign_address(dev, skb, hdr, skb->len);
883
884 priv->tx(dev, hdr, skb->len, 0);
885 return 0;
886 }
887
888 static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
889 const u8 *bssid)
890 {
891 struct p54_common *priv = dev->priv;
892 struct p54_control_hdr *hdr;
893 struct p54_tx_control_filter *filter;
894 size_t data_len;
895
896 hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
897 priv->tx_hdr_len, GFP_ATOMIC);
898 if (!hdr)
899 return -ENOMEM;
900
901 hdr = (void *)hdr + priv->tx_hdr_len;
902
903 filter = (struct p54_tx_control_filter *) hdr->data;
904 hdr->magic1 = cpu_to_le16(0x8001);
905 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
906
907 priv->filter_type = filter->filter_type = cpu_to_le16(filter_type);
908 memcpy(filter->mac_addr, priv->mac_addr, ETH_ALEN);
909 if (!bssid)
910 memset(filter->bssid, ~0, ETH_ALEN);
911 else
912 memcpy(filter->bssid, bssid, ETH_ALEN);
913
914 filter->rx_antenna = priv->rx_antenna;
915
916 if (priv->fw_var < 0x500) {
917 data_len = P54_TX_CONTROL_FILTER_V1_LEN;
918 filter->v1.basic_rate_mask = cpu_to_le32(0x15F);
919 filter->v1.rx_addr = cpu_to_le32(priv->rx_end);
920 filter->v1.max_rx = cpu_to_le16(priv->rx_mtu);
921 filter->v1.rxhw = cpu_to_le16(priv->rxhw);
922 filter->v1.wakeup_timer = cpu_to_le16(500);
923 } else {
924 data_len = P54_TX_CONTROL_FILTER_V2_LEN;
925 filter->v2.rx_addr = cpu_to_le32(priv->rx_end);
926 filter->v2.max_rx = cpu_to_le16(priv->rx_mtu);
927 filter->v2.rxhw = cpu_to_le16(priv->rxhw);
928 filter->v2.timer = cpu_to_le16(1000);
929 }
930
931 hdr->len = cpu_to_le16(data_len);
932 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
933 priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
934 return 0;
935 }
936
937 static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
938 {
939 struct p54_common *priv = dev->priv;
940 struct p54_control_hdr *hdr;
941 struct p54_tx_control_channel *chan;
942 unsigned int i;
943 size_t data_len;
944 void *entry;
945
946 hdr = kzalloc(sizeof(*hdr) + sizeof(*chan) +
947 priv->tx_hdr_len, GFP_KERNEL);
948 if (!hdr)
949 return -ENOMEM;
950
951 hdr = (void *)hdr + priv->tx_hdr_len;
952
953 chan = (struct p54_tx_control_channel *) hdr->data;
954
955 hdr->magic1 = cpu_to_le16(0x8001);
956
957 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
958
959 chan->flags = cpu_to_le16(0x1);
960 chan->dwell = cpu_to_le16(0x0);
961
962 for (i = 0; i < priv->iq_autocal_len; i++) {
963 if (priv->iq_autocal[i].freq != freq)
964 continue;
965
966 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
967 sizeof(*priv->iq_autocal));
968 break;
969 }
970 if (i == priv->iq_autocal_len)
971 goto err;
972
973 for (i = 0; i < priv->output_limit_len; i++) {
974 if (priv->output_limit[i].freq != freq)
975 continue;
976
977 chan->val_barker = 0x38;
978 chan->val_bpsk = chan->dup_bpsk =
979 priv->output_limit[i].val_bpsk;
980 chan->val_qpsk = chan->dup_qpsk =
981 priv->output_limit[i].val_qpsk;
982 chan->val_16qam = chan->dup_16qam =
983 priv->output_limit[i].val_16qam;
984 chan->val_64qam = chan->dup_64qam =
985 priv->output_limit[i].val_64qam;
986 break;
987 }
988 if (i == priv->output_limit_len)
989 goto err;
990
991 entry = priv->curve_data->data;
992 for (i = 0; i < priv->curve_data->channels; i++) {
993 if (*((__le16 *)entry) != freq) {
994 entry += sizeof(__le16);
995 entry += sizeof(struct p54_pa_curve_data_sample) *
996 priv->curve_data->points_per_channel;
997 continue;
998 }
999
1000 entry += sizeof(__le16);
1001 chan->pa_points_per_curve =
1002 min(priv->curve_data->points_per_channel, (u8) 8);
1003
1004 memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
1005 chan->pa_points_per_curve);
1006 break;
1007 }
1008
1009 if (priv->fw_var < 0x500) {
1010 data_len = P54_TX_CONTROL_CHANNEL_V1_LEN;
1011 chan->v1.rssical_mul = cpu_to_le16(130);
1012 chan->v1.rssical_add = cpu_to_le16(0xfe70);
1013 } else {
1014 data_len = P54_TX_CONTROL_CHANNEL_V2_LEN;
1015 chan->v2.rssical_mul = cpu_to_le16(130);
1016 chan->v2.rssical_add = cpu_to_le16(0xfe70);
1017 chan->v2.basic_rate_mask = cpu_to_le32(0x15f);
1018 }
1019
1020 hdr->len = cpu_to_le16(data_len);
1021 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
1022 priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
1023 return 0;
1024
1025 err:
1026 printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1027 kfree(hdr);
1028 return -EINVAL;
1029 }
1030
1031 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1032 {
1033 struct p54_common *priv = dev->priv;
1034 struct p54_control_hdr *hdr;
1035 struct p54_tx_control_led *led;
1036
1037 hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
1038 priv->tx_hdr_len, GFP_KERNEL);
1039 if (!hdr)
1040 return -ENOMEM;
1041
1042 hdr = (void *)hdr + priv->tx_hdr_len;
1043 hdr->magic1 = cpu_to_le16(0x8001);
1044 hdr->len = cpu_to_le16(sizeof(*led));
1045 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
1046 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led));
1047
1048 led = (struct p54_tx_control_led *) hdr->data;
1049 led->mode = cpu_to_le16(mode);
1050 led->led_permanent = cpu_to_le16(link);
1051 led->led_temporary = cpu_to_le16(act);
1052 led->duration = cpu_to_le16(1000);
1053
1054 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
1055
1056 return 0;
1057 }
1058
1059 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
1060 do { \
1061 queue.aifs = cpu_to_le16(ai_fs); \
1062 queue.cwmin = cpu_to_le16(cw_min); \
1063 queue.cwmax = cpu_to_le16(cw_max); \
1064 queue.txop = cpu_to_le16(_txop); \
1065 } while(0)
1066
1067 static void p54_init_vdcf(struct ieee80211_hw *dev)
1068 {
1069 struct p54_common *priv = dev->priv;
1070 struct p54_control_hdr *hdr;
1071 struct p54_tx_control_vdcf *vdcf;
1072
1073 /* all USB V1 adapters need a extra headroom */
1074 hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1075 hdr->magic1 = cpu_to_le16(0x8001);
1076 hdr->len = cpu_to_le16(sizeof(*vdcf));
1077 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
1078 hdr->req_id = cpu_to_le32(priv->rx_start);
1079
1080 vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1081
1082 P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 47);
1083 P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
1084 P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
1085 P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
1086 }
1087
1088 static void p54_set_vdcf(struct ieee80211_hw *dev)
1089 {
1090 struct p54_common *priv = dev->priv;
1091 struct p54_control_hdr *hdr;
1092 struct p54_tx_control_vdcf *vdcf;
1093
1094 hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1095
1096 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf));
1097
1098 vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1099
1100 if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
1101 vdcf->slottime = 9;
1102 vdcf->magic1 = 0x10;
1103 vdcf->magic2 = 0x00;
1104 } else {
1105 vdcf->slottime = 20;
1106 vdcf->magic1 = 0x0a;
1107 vdcf->magic2 = 0x06;
1108 }
1109
1110 /* (see prism54/isl_oid.h for further details) */
1111 vdcf->frameburst = cpu_to_le16(0);
1112
1113 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
1114 }
1115
1116 static int p54_start(struct ieee80211_hw *dev)
1117 {
1118 struct p54_common *priv = dev->priv;
1119 int err;
1120
1121 if (!priv->cached_vdcf) {
1122 priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf)+
1123 priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1124 GFP_KERNEL);
1125
1126 if (!priv->cached_vdcf)
1127 return -ENOMEM;
1128 }
1129
1130 if (!priv->cached_stats) {
1131 priv->cached_stats = kzalloc(sizeof(struct p54_statistics) +
1132 priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1133 GFP_KERNEL);
1134
1135 if (!priv->cached_stats) {
1136 kfree(priv->cached_vdcf);
1137 priv->cached_vdcf = NULL;
1138 return -ENOMEM;
1139 }
1140 }
1141
1142 err = priv->open(dev);
1143 if (!err)
1144 priv->mode = NL80211_IFTYPE_MONITOR;
1145
1146 p54_init_vdcf(dev);
1147
1148 mod_timer(&priv->stats_timer, jiffies + HZ);
1149 return err;
1150 }
1151
1152 static void p54_stop(struct ieee80211_hw *dev)
1153 {
1154 struct p54_common *priv = dev->priv;
1155 struct sk_buff *skb;
1156
1157 del_timer(&priv->stats_timer);
1158 while ((skb = skb_dequeue(&priv->tx_queue)))
1159 kfree_skb(skb);
1160 priv->stop(dev);
1161 priv->tsf_high32 = priv->tsf_low32 = 0;
1162 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1163 }
1164
1165 static int p54_add_interface(struct ieee80211_hw *dev,
1166 struct ieee80211_if_init_conf *conf)
1167 {
1168 struct p54_common *priv = dev->priv;
1169
1170 if (priv->mode != NL80211_IFTYPE_MONITOR)
1171 return -EOPNOTSUPP;
1172
1173 switch (conf->type) {
1174 case NL80211_IFTYPE_STATION:
1175 priv->mode = conf->type;
1176 break;
1177 default:
1178 return -EOPNOTSUPP;
1179 }
1180
1181 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1182
1183 p54_set_filter(dev, 0, NULL);
1184
1185 switch (conf->type) {
1186 case NL80211_IFTYPE_STATION:
1187 p54_set_filter(dev, 1, NULL);
1188 break;
1189 default:
1190 BUG(); /* impossible */
1191 break;
1192 }
1193
1194 p54_set_leds(dev, 1, 0, 0);
1195
1196 return 0;
1197 }
1198
1199 static void p54_remove_interface(struct ieee80211_hw *dev,
1200 struct ieee80211_if_init_conf *conf)
1201 {
1202 struct p54_common *priv = dev->priv;
1203 priv->mode = NL80211_IFTYPE_MONITOR;
1204 memset(priv->mac_addr, 0, ETH_ALEN);
1205 p54_set_filter(dev, 0, NULL);
1206 }
1207
1208 static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1209 {
1210 int ret;
1211 struct p54_common *priv = dev->priv;
1212
1213 mutex_lock(&priv->conf_mutex);
1214 priv->rx_antenna = (conf->antenna_sel_rx == 0) ?
1215 2 : conf->antenna_sel_tx - 1;
1216 priv->output_power = conf->power_level << 2;
1217 ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
1218 p54_set_vdcf(dev);
1219 mutex_unlock(&priv->conf_mutex);
1220 return ret;
1221 }
1222
1223 static int p54_config_interface(struct ieee80211_hw *dev,
1224 struct ieee80211_vif *vif,
1225 struct ieee80211_if_conf *conf)
1226 {
1227 struct p54_common *priv = dev->priv;
1228
1229 mutex_lock(&priv->conf_mutex);
1230 p54_set_filter(dev, 0, conf->bssid);
1231 p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
1232 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1233 mutex_unlock(&priv->conf_mutex);
1234 return 0;
1235 }
1236
1237 static void p54_configure_filter(struct ieee80211_hw *dev,
1238 unsigned int changed_flags,
1239 unsigned int *total_flags,
1240 int mc_count, struct dev_mc_list *mclist)
1241 {
1242 struct p54_common *priv = dev->priv;
1243
1244 *total_flags &= FIF_BCN_PRBRESP_PROMISC |
1245 FIF_PROMISC_IN_BSS |
1246 FIF_FCSFAIL;
1247
1248 priv->filter_flags = *total_flags;
1249
1250 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1251 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1252 p54_set_filter(dev, le16_to_cpu(priv->filter_type),
1253 NULL);
1254 else
1255 p54_set_filter(dev, le16_to_cpu(priv->filter_type),
1256 priv->bssid);
1257 }
1258
1259 if (changed_flags & FIF_PROMISC_IN_BSS) {
1260 if (*total_flags & FIF_PROMISC_IN_BSS)
1261 p54_set_filter(dev, le16_to_cpu(priv->filter_type) |
1262 0x8, NULL);
1263 else
1264 p54_set_filter(dev, le16_to_cpu(priv->filter_type) &
1265 ~0x8, priv->bssid);
1266 }
1267 }
1268
1269 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1270 const struct ieee80211_tx_queue_params *params)
1271 {
1272 struct p54_common *priv = dev->priv;
1273 struct p54_tx_control_vdcf *vdcf;
1274
1275 vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
1276 ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
1277
1278 if ((params) && !(queue > 4)) {
1279 P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
1280 params->cw_min, params->cw_max, params->txop);
1281 } else
1282 return -EINVAL;
1283
1284 p54_set_vdcf(dev);
1285
1286 return 0;
1287 }
1288
1289 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
1290 {
1291 struct p54_common *priv = dev->priv;
1292 struct p54_control_hdr *hdr;
1293 struct p54_tx_control_xbow_synth *xbow;
1294
1295 hdr = kzalloc(sizeof(*hdr) + sizeof(*xbow) +
1296 priv->tx_hdr_len, GFP_KERNEL);
1297 if (!hdr)
1298 return -ENOMEM;
1299
1300 hdr = (void *)hdr + priv->tx_hdr_len;
1301 hdr->magic1 = cpu_to_le16(0x8001);
1302 hdr->len = cpu_to_le16(sizeof(*xbow));
1303 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_XBOW_SYNTH_CFG);
1304 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*xbow));
1305
1306 xbow = (struct p54_tx_control_xbow_synth *) hdr->data;
1307 xbow->magic1 = cpu_to_le16(0x1);
1308 xbow->magic2 = cpu_to_le16(0x2);
1309 xbow->freq = cpu_to_le16(5390);
1310
1311 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*xbow), 1);
1312
1313 return 0;
1314 }
1315
1316 static void p54_statistics_timer(unsigned long data)
1317 {
1318 struct ieee80211_hw *dev = (struct ieee80211_hw *) data;
1319 struct p54_common *priv = dev->priv;
1320 struct p54_control_hdr *hdr;
1321 struct p54_statistics *stats;
1322
1323 BUG_ON(!priv->cached_stats);
1324
1325 hdr = (void *)priv->cached_stats + priv->tx_hdr_len;
1326 hdr->magic1 = cpu_to_le16(0x8000);
1327 hdr->len = cpu_to_le16(sizeof(*stats));
1328 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_STAT_READBACK);
1329 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*stats));
1330
1331 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*stats), 0);
1332 }
1333
1334 static int p54_get_stats(struct ieee80211_hw *dev,
1335 struct ieee80211_low_level_stats *stats)
1336 {
1337 struct p54_common *priv = dev->priv;
1338
1339 del_timer(&priv->stats_timer);
1340 p54_statistics_timer((unsigned long)dev);
1341
1342 if (!wait_for_completion_interruptible_timeout(&priv->stats_comp, HZ)) {
1343 printk(KERN_ERR "%s: device does not respond!\n",
1344 wiphy_name(dev->wiphy));
1345 return -EBUSY;
1346 }
1347
1348 memcpy(stats, &priv->stats, sizeof(*stats));
1349
1350 return 0;
1351 }
1352
1353 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1354 struct ieee80211_tx_queue_stats *stats)
1355 {
1356 struct p54_common *priv = dev->priv;
1357
1358 memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1359
1360 return 0;
1361 }
1362
1363 static const struct ieee80211_ops p54_ops = {
1364 .tx = p54_tx,
1365 .start = p54_start,
1366 .stop = p54_stop,
1367 .add_interface = p54_add_interface,
1368 .remove_interface = p54_remove_interface,
1369 .config = p54_config,
1370 .config_interface = p54_config_interface,
1371 .configure_filter = p54_configure_filter,
1372 .conf_tx = p54_conf_tx,
1373 .get_stats = p54_get_stats,
1374 .get_tx_stats = p54_get_tx_stats
1375 };
1376
1377 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
1378 {
1379 struct ieee80211_hw *dev;
1380 struct p54_common *priv;
1381
1382 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
1383 if (!dev)
1384 return NULL;
1385
1386 priv = dev->priv;
1387 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1388 skb_queue_head_init(&priv->tx_queue);
1389 dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
1390 IEEE80211_HW_RX_INCLUDES_FCS |
1391 IEEE80211_HW_SIGNAL_DBM |
1392 IEEE80211_HW_NOISE_DBM;
1393
1394 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1395
1396 dev->channel_change_time = 1000; /* TODO: find actual value */
1397
1398 priv->tx_stats[0].limit = 1;
1399 priv->tx_stats[1].limit = 1;
1400 priv->tx_stats[2].limit = 1;
1401 priv->tx_stats[3].limit = 1;
1402 priv->tx_stats[4].limit = 5;
1403 dev->queues = 1;
1404 priv->noise = -94;
1405 dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
1406 sizeof(struct p54_tx_control_allocdata);
1407
1408 mutex_init(&priv->conf_mutex);
1409 init_completion(&priv->eeprom_comp);
1410 init_completion(&priv->stats_comp);
1411 setup_timer(&priv->stats_timer, p54_statistics_timer,
1412 (unsigned long)dev);
1413
1414 return dev;
1415 }
1416 EXPORT_SYMBOL_GPL(p54_init_common);
1417
1418 void p54_free_common(struct ieee80211_hw *dev)
1419 {
1420 struct p54_common *priv = dev->priv;
1421 kfree(priv->cached_stats);
1422 kfree(priv->iq_autocal);
1423 kfree(priv->output_limit);
1424 kfree(priv->curve_data);
1425 kfree(priv->cached_vdcf);
1426 }
1427 EXPORT_SYMBOL_GPL(p54_free_common);
1428
1429 static int __init p54_init(void)
1430 {
1431 return 0;
1432 }
1433
1434 static void __exit p54_exit(void)
1435 {
1436 }
1437
1438 module_init(p54_init);
1439 module_exit(p54_exit);
Linux kernel - Deliverables
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