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p54: include support for 2.13.24.0 USB LM87 Firmwares
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / p54 / p54common.c
blob1b5627d4062eeebd31da91790c701ef38b635118
1 /*
2 * Common code for mac80211 Prism54 drivers
3 *
4 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
5 * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 *
8 * Based on:
9 * - the islsm (softmac prism54) driver, which is:
10 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
11 * - stlc45xx driver
12 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19 #include <linux/init.h>
20 #include <linux/firmware.h>
21 #include <linux/etherdevice.h>
22
23 #include <net/mac80211.h>
24
25 #include "p54.h"
26 #include "p54common.h"
27
28 static int modparam_nohwcrypt;
29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
32 MODULE_DESCRIPTION("Softmac Prism54 common code");
33 MODULE_LICENSE("GPL");
34 MODULE_ALIAS("prism54common");
35
36 static struct ieee80211_rate p54_bgrates[] = {
37 { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
38 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
39 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
40 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
41 { .bitrate = 60, .hw_value = 4, },
42 { .bitrate = 90, .hw_value = 5, },
43 { .bitrate = 120, .hw_value = 6, },
44 { .bitrate = 180, .hw_value = 7, },
45 { .bitrate = 240, .hw_value = 8, },
46 { .bitrate = 360, .hw_value = 9, },
47 { .bitrate = 480, .hw_value = 10, },
48 { .bitrate = 540, .hw_value = 11, },
49 };
50
51 static struct ieee80211_channel p54_bgchannels[] = {
52 { .center_freq = 2412, .hw_value = 1, },
53 { .center_freq = 2417, .hw_value = 2, },
54 { .center_freq = 2422, .hw_value = 3, },
55 { .center_freq = 2427, .hw_value = 4, },
56 { .center_freq = 2432, .hw_value = 5, },
57 { .center_freq = 2437, .hw_value = 6, },
58 { .center_freq = 2442, .hw_value = 7, },
59 { .center_freq = 2447, .hw_value = 8, },
60 { .center_freq = 2452, .hw_value = 9, },
61 { .center_freq = 2457, .hw_value = 10, },
62 { .center_freq = 2462, .hw_value = 11, },
63 { .center_freq = 2467, .hw_value = 12, },
64 { .center_freq = 2472, .hw_value = 13, },
65 { .center_freq = 2484, .hw_value = 14, },
66 };
67
68 static struct ieee80211_supported_band band_2GHz = {
69 .channels = p54_bgchannels,
70 .n_channels = ARRAY_SIZE(p54_bgchannels),
71 .bitrates = p54_bgrates,
72 .n_bitrates = ARRAY_SIZE(p54_bgrates),
73 };
74
75 static struct ieee80211_rate p54_arates[] = {
76 { .bitrate = 60, .hw_value = 4, },
77 { .bitrate = 90, .hw_value = 5, },
78 { .bitrate = 120, .hw_value = 6, },
79 { .bitrate = 180, .hw_value = 7, },
80 { .bitrate = 240, .hw_value = 8, },
81 { .bitrate = 360, .hw_value = 9, },
82 { .bitrate = 480, .hw_value = 10, },
83 { .bitrate = 540, .hw_value = 11, },
84 };
85
86 static struct ieee80211_channel p54_achannels[] = {
87 { .center_freq = 4920 },
88 { .center_freq = 4940 },
89 { .center_freq = 4960 },
90 { .center_freq = 4980 },
91 { .center_freq = 5040 },
92 { .center_freq = 5060 },
93 { .center_freq = 5080 },
94 { .center_freq = 5170 },
95 { .center_freq = 5180 },
96 { .center_freq = 5190 },
97 { .center_freq = 5200 },
98 { .center_freq = 5210 },
99 { .center_freq = 5220 },
100 { .center_freq = 5230 },
101 { .center_freq = 5240 },
102 { .center_freq = 5260 },
103 { .center_freq = 5280 },
104 { .center_freq = 5300 },
105 { .center_freq = 5320 },
106 { .center_freq = 5500 },
107 { .center_freq = 5520 },
108 { .center_freq = 5540 },
109 { .center_freq = 5560 },
110 { .center_freq = 5580 },
111 { .center_freq = 5600 },
112 { .center_freq = 5620 },
113 { .center_freq = 5640 },
114 { .center_freq = 5660 },
115 { .center_freq = 5680 },
116 { .center_freq = 5700 },
117 { .center_freq = 5745 },
118 { .center_freq = 5765 },
119 { .center_freq = 5785 },
120 { .center_freq = 5805 },
121 { .center_freq = 5825 },
122 };
123
124 static struct ieee80211_supported_band band_5GHz = {
125 .channels = p54_achannels,
126 .n_channels = ARRAY_SIZE(p54_achannels),
127 .bitrates = p54_arates,
128 .n_bitrates = ARRAY_SIZE(p54_arates),
129 };
130
131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
132 {
133 struct p54_common *priv = dev->priv;
134 struct bootrec_exp_if *exp_if;
135 struct bootrec *bootrec;
136 u32 *data = (u32 *)fw->data;
137 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
138 u8 *fw_version = NULL;
139 size_t len;
140 int i;
141
142 if (priv->rx_start)
143 return 0;
144
145 while (data < end_data && *data)
146 data++;
147
148 while (data < end_data && !*data)
149 data++;
150
151 bootrec = (struct bootrec *) data;
152
153 while (bootrec->data <= end_data &&
154 (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
155 u32 code = le32_to_cpu(bootrec->code);
156 switch (code) {
157 case BR_CODE_COMPONENT_ID:
158 priv->fw_interface = be32_to_cpup((__be32 *)
159 bootrec->data);
160 switch (priv->fw_interface) {
161 case FW_FMAC:
162 printk(KERN_INFO "p54: FreeMAC firmware\n");
163 break;
164 case FW_LM20:
165 printk(KERN_INFO "p54: LM20 firmware\n");
166 break;
167 case FW_LM86:
168 printk(KERN_INFO "p54: LM86 firmware\n");
169 break;
170 case FW_LM87:
171 printk(KERN_INFO "p54: LM87 firmware\n");
172 break;
173 default:
174 printk(KERN_INFO "p54: unknown firmware\n");
175 break;
176 }
177 break;
178 case BR_CODE_COMPONENT_VERSION:
179 /* 24 bytes should be enough for all firmwares */
180 if (strnlen((unsigned char*)bootrec->data, 24) < 24)
181 fw_version = (unsigned char*)bootrec->data;
182 break;
183 case BR_CODE_DESCR: {
184 struct bootrec_desc *desc =
185 (struct bootrec_desc *)bootrec->data;
186 priv->rx_start = le32_to_cpu(desc->rx_start);
187 /* FIXME add sanity checking */
188 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
189 priv->headroom = desc->headroom;
190 priv->tailroom = desc->tailroom;
191 priv->privacy_caps = desc->privacy_caps;
192 priv->rx_keycache_size = desc->rx_keycache_size;
193 if (le32_to_cpu(bootrec->len) == 11)
194 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
195 else
196 priv->rx_mtu = (size_t)
197 0x620 - priv->tx_hdr_len;
198 break;
199 }
200 case BR_CODE_EXPOSED_IF:
201 exp_if = (struct bootrec_exp_if *) bootrec->data;
202 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
203 if (exp_if[i].if_id == cpu_to_le16(0x1a))
204 priv->fw_var = le16_to_cpu(exp_if[i].variant);
205 break;
206 case BR_CODE_DEPENDENT_IF:
207 break;
208 case BR_CODE_END_OF_BRA:
209 case LEGACY_BR_CODE_END_OF_BRA:
210 end_data = NULL;
211 break;
212 default:
213 break;
214 }
215 bootrec = (struct bootrec *)&bootrec->data[len];
216 }
217
218 if (fw_version)
219 printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
220 fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
221
222 if (priv->fw_var < 0x500)
223 printk(KERN_INFO "p54: you are using an obsolete firmware. "
224 "visit http://wireless.kernel.org/en/users/Drivers/p54 "
225 "and grab one for \"kernel >= 2.6.28\"!\n");
226
227 if (priv->fw_var >= 0x300) {
228 /* Firmware supports QoS, use it! */
229 priv->tx_stats[4].limit = 3; /* AC_VO */
230 priv->tx_stats[5].limit = 4; /* AC_VI */
231 priv->tx_stats[6].limit = 3; /* AC_BE */
232 priv->tx_stats[7].limit = 2; /* AC_BK */
233 dev->queues = 4;
234 }
235
236 if (!modparam_nohwcrypt)
237 printk(KERN_INFO "%s: cryptographic accelerator "
238 "WEP:%s, TKIP:%s, CCMP:%s\n",
239 wiphy_name(dev->wiphy),
240 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
241 "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
242 BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
243 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
244 "YES" : "no");
245
246 return 0;
247 }
248 EXPORT_SYMBOL_GPL(p54_parse_firmware);
249
250 static int p54_convert_rev0(struct ieee80211_hw *dev,
251 struct pda_pa_curve_data *curve_data)
252 {
253 struct p54_common *priv = dev->priv;
254 struct p54_pa_curve_data_sample *dst;
255 struct pda_pa_curve_data_sample_rev0 *src;
256 size_t cd_len = sizeof(*curve_data) +
257 (curve_data->points_per_channel*sizeof(*dst) + 2) *
258 curve_data->channels;
259 unsigned int i, j;
260 void *source, *target;
261
262 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
263 if (!priv->curve_data)
264 return -ENOMEM;
265
266 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
267 source = curve_data->data;
268 target = priv->curve_data->data;
269 for (i = 0; i < curve_data->channels; i++) {
270 __le16 *freq = source;
271 source += sizeof(__le16);
272 *((__le16 *)target) = *freq;
273 target += sizeof(__le16);
274 for (j = 0; j < curve_data->points_per_channel; j++) {
275 dst = target;
276 src = source;
277
278 dst->rf_power = src->rf_power;
279 dst->pa_detector = src->pa_detector;
280 dst->data_64qam = src->pcv;
281 /* "invent" the points for the other modulations */
282 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
283 dst->data_16qam = SUB(src->pcv, 12);
284 dst->data_qpsk = SUB(dst->data_16qam, 12);
285 dst->data_bpsk = SUB(dst->data_qpsk, 12);
286 dst->data_barker = SUB(dst->data_bpsk, 14);
287 #undef SUB
288 target += sizeof(*dst);
289 source += sizeof(*src);
290 }
291 }
292
293 return 0;
294 }
295
296 static int p54_convert_rev1(struct ieee80211_hw *dev,
297 struct pda_pa_curve_data *curve_data)
298 {
299 struct p54_common *priv = dev->priv;
300 struct p54_pa_curve_data_sample *dst;
301 struct pda_pa_curve_data_sample_rev1 *src;
302 size_t cd_len = sizeof(*curve_data) +
303 (curve_data->points_per_channel*sizeof(*dst) + 2) *
304 curve_data->channels;
305 unsigned int i, j;
306 void *source, *target;
307
308 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
309 if (!priv->curve_data)
310 return -ENOMEM;
311
312 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
313 source = curve_data->data;
314 target = priv->curve_data->data;
315 for (i = 0; i < curve_data->channels; i++) {
316 __le16 *freq = source;
317 source += sizeof(__le16);
318 *((__le16 *)target) = *freq;
319 target += sizeof(__le16);
320 for (j = 0; j < curve_data->points_per_channel; j++) {
321 memcpy(target, source, sizeof(*src));
322
323 target += sizeof(*dst);
324 source += sizeof(*src);
325 }
326 source++;
327 }
328
329 return 0;
330 }
331
332 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
333 "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
334 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
335
336 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
337 {
338 struct p54_common *priv = dev->priv;
339 struct eeprom_pda_wrap *wrap = NULL;
340 struct pda_entry *entry;
341 unsigned int data_len, entry_len;
342 void *tmp;
343 int err;
344 u8 *end = (u8 *)eeprom + len;
345 u16 synth = 0;
346
347 wrap = (struct eeprom_pda_wrap *) eeprom;
348 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
349
350 /* verify that at least the entry length/code fits */
351 while ((u8 *)entry <= end - sizeof(*entry)) {
352 entry_len = le16_to_cpu(entry->len);
353 data_len = ((entry_len - 1) << 1);
354
355 /* abort if entry exceeds whole structure */
356 if ((u8 *)entry + sizeof(*entry) + data_len > end)
357 break;
358
359 switch (le16_to_cpu(entry->code)) {
360 case PDR_MAC_ADDRESS:
361 SET_IEEE80211_PERM_ADDR(dev, entry->data);
362 break;
363 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
364 if (data_len < 2) {
365 err = -EINVAL;
366 goto err;
367 }
368
369 if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
370 err = -EINVAL;
371 goto err;
372 }
373
374 priv->output_limit = kmalloc(entry->data[1] *
375 sizeof(*priv->output_limit), GFP_KERNEL);
376
377 if (!priv->output_limit) {
378 err = -ENOMEM;
379 goto err;
380 }
381
382 memcpy(priv->output_limit, &entry->data[2],
383 entry->data[1]*sizeof(*priv->output_limit));
384 priv->output_limit_len = entry->data[1];
385 break;
386 case PDR_PRISM_PA_CAL_CURVE_DATA: {
387 struct pda_pa_curve_data *curve_data =
388 (struct pda_pa_curve_data *)entry->data;
389 if (data_len < sizeof(*curve_data)) {
390 err = -EINVAL;
391 goto err;
392 }
393
394 switch (curve_data->cal_method_rev) {
395 case 0:
396 err = p54_convert_rev0(dev, curve_data);
397 break;
398 case 1:
399 err = p54_convert_rev1(dev, curve_data);
400 break;
401 default:
402 printk(KERN_ERR "p54: unknown curve data "
403 "revision %d\n",
404 curve_data->cal_method_rev);
405 err = -ENODEV;
406 break;
407 }
408 if (err)
409 goto err;
410
411 }
412 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
413 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
414 if (!priv->iq_autocal) {
415 err = -ENOMEM;
416 goto err;
417 }
418
419 memcpy(priv->iq_autocal, entry->data, data_len);
420 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
421 break;
422 case PDR_INTERFACE_LIST:
423 tmp = entry->data;
424 while ((u8 *)tmp < entry->data + data_len) {
425 struct bootrec_exp_if *exp_if = tmp;
426 if (le16_to_cpu(exp_if->if_id) == 0xf)
427 synth = le16_to_cpu(exp_if->variant);
428 tmp += sizeof(struct bootrec_exp_if);
429 }
430 break;
431 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
432 priv->version = *(u8 *)(entry->data + 1);
433 break;
434 case PDR_END:
435 /* make it overrun */
436 entry_len = len;
437 break;
438 case PDR_MANUFACTURING_PART_NUMBER:
439 case PDR_PDA_VERSION:
440 case PDR_NIC_SERIAL_NUMBER:
441 case PDR_REGULATORY_DOMAIN_LIST:
442 case PDR_TEMPERATURE_TYPE:
443 case PDR_PRISM_PCI_IDENTIFIER:
444 case PDR_COUNTRY_INFORMATION:
445 case PDR_OEM_NAME:
446 case PDR_PRODUCT_NAME:
447 case PDR_UTF8_OEM_NAME:
448 case PDR_UTF8_PRODUCT_NAME:
449 case PDR_COUNTRY_LIST:
450 case PDR_DEFAULT_COUNTRY:
451 case PDR_ANTENNA_GAIN:
452 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
453 case PDR_RSSI_LINEAR_APPROXIMATION:
454 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
455 case PDR_REGULATORY_POWER_LIMITS:
456 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
457 case PDR_RADIATED_TRANSMISSION_CORRECTION:
458 case PDR_PRISM_TX_IQ_CALIBRATION:
459 case PDR_BASEBAND_REGISTERS:
460 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
461 break;
462 default:
463 printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
464 le16_to_cpu(entry->code));
465 break;
466 }
467
468 entry = (void *)entry + (entry_len + 1)*2;
469 }
470
471 if (!synth || !priv->iq_autocal || !priv->output_limit ||
472 !priv->curve_data) {
473 printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
474 err = -EINVAL;
475 goto err;
476 }
477
478 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
479 if (priv->rxhw == 4)
480 p54_init_xbow_synth(dev);
481 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
482 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
483 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
484 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
485
486 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
487 u8 perm_addr[ETH_ALEN];
488
489 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
490 wiphy_name(dev->wiphy));
491 random_ether_addr(perm_addr);
492 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
493 }
494
495 printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
496 wiphy_name(dev->wiphy),
497 dev->wiphy->perm_addr,
498 priv->version, p54_rf_chips[priv->rxhw]);
499
500 return 0;
501
502 err:
503 if (priv->iq_autocal) {
504 kfree(priv->iq_autocal);
505 priv->iq_autocal = NULL;
506 }
507
508 if (priv->output_limit) {
509 kfree(priv->output_limit);
510 priv->output_limit = NULL;
511 }
512
513 if (priv->curve_data) {
514 kfree(priv->curve_data);
515 priv->curve_data = NULL;
516 }
517
518 printk(KERN_ERR "p54: eeprom parse failed!\n");
519 return err;
520 }
521
522 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
523 {
524 /* TODO: get the rssi_add & rssi_mul data from the eeprom */
525 return ((rssi * 0x83) / 64 - 400) / 4;
526 }
527
528 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
529 {
530 struct p54_common *priv = dev->priv;
531 struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
532 struct ieee80211_rx_status rx_status = {0};
533 u16 freq = le16_to_cpu(hdr->freq);
534 size_t header_len = sizeof(*hdr);
535 u32 tsf32;
536
537 if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
538 if (priv->filter_flags & FIF_FCSFAIL)
539 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
540 else
541 return 0;
542 }
543
544 if (hdr->decrypt_status == P54_DECRYPT_OK)
545 rx_status.flag |= RX_FLAG_DECRYPTED;
546 if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
547 (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
548 rx_status.flag |= RX_FLAG_MMIC_ERROR;
549
550 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
551 rx_status.noise = priv->noise;
552 /* XX correct? */
553 rx_status.qual = (100 * hdr->rssi) / 127;
554 if (hdr->rate & 0x10)
555 rx_status.flag |= RX_FLAG_SHORTPRE;
556 rx_status.rate_idx = (dev->conf.channel->band == IEEE80211_BAND_2GHZ ?
557 hdr->rate : (hdr->rate - 4)) & 0xf;
558 rx_status.freq = freq;
559 rx_status.band = dev->conf.channel->band;
560 rx_status.antenna = hdr->antenna;
561
562 tsf32 = le32_to_cpu(hdr->tsf32);
563 if (tsf32 < priv->tsf_low32)
564 priv->tsf_high32++;
565 rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
566 priv->tsf_low32 = tsf32;
567
568 rx_status.flag |= RX_FLAG_TSFT;
569
570 if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
571 header_len += hdr->align[0];
572
573 skb_pull(skb, header_len);
574 skb_trim(skb, le16_to_cpu(hdr->len));
575
576 ieee80211_rx_irqsafe(dev, skb, &rx_status);
577
578 return -1;
579 }
580
581 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
582 {
583 struct p54_common *priv = dev->priv;
584 int i;
585
586 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
587 return ;
588
589 for (i = 0; i < dev->queues; i++)
590 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
591 ieee80211_wake_queue(dev, i);
592 }
593
594 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
595 {
596 struct p54_common *priv = dev->priv;
597 struct ieee80211_tx_info *info;
598 struct memrecord *range;
599 unsigned long flags;
600 u32 freed = 0, last_addr = priv->rx_start;
601
602 if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
603 return;
604
605 spin_lock_irqsave(&priv->tx_queue.lock, flags);
606 info = IEEE80211_SKB_CB(skb);
607 range = (void *)info->rate_driver_data;
608 if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
609 struct ieee80211_tx_info *ni;
610 struct memrecord *mr;
611
612 ni = IEEE80211_SKB_CB(skb->prev);
613 mr = (struct memrecord *)ni->rate_driver_data;
614 last_addr = mr->end_addr;
615 }
616 if (skb->next != (struct sk_buff *)&priv->tx_queue) {
617 struct ieee80211_tx_info *ni;
618 struct memrecord *mr;
619
620 ni = IEEE80211_SKB_CB(skb->next);
621 mr = (struct memrecord *)ni->rate_driver_data;
622 freed = mr->start_addr - last_addr;
623 } else
624 freed = priv->rx_end - last_addr;
625 __skb_unlink(skb, &priv->tx_queue);
626 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
627 kfree_skb(skb);
628
629 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
630 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
631 p54_wake_free_queues(dev);
632 }
633 EXPORT_SYMBOL_GPL(p54_free_skb);
634
635 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
636 {
637 struct p54_common *priv = dev->priv;
638 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
639 struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
640 struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
641 u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
642 struct memrecord *range = NULL;
643 u32 freed = 0;
644 u32 last_addr = priv->rx_start;
645 unsigned long flags;
646 int count, idx;
647
648 spin_lock_irqsave(&priv->tx_queue.lock, flags);
649 while (entry != (struct sk_buff *)&priv->tx_queue) {
650 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
651 struct p54_hdr *entry_hdr;
652 struct p54_tx_data *entry_data;
653 int pad = 0;
654
655 range = (void *)info->rate_driver_data;
656 if (range->start_addr != addr) {
657 last_addr = range->end_addr;
658 entry = entry->next;
659 continue;
660 }
661
662 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
663 struct ieee80211_tx_info *ni;
664 struct memrecord *mr;
665
666 ni = IEEE80211_SKB_CB(entry->next);
667 mr = (struct memrecord *)ni->rate_driver_data;
668 freed = mr->start_addr - last_addr;
669 } else
670 freed = priv->rx_end - last_addr;
671
672 last_addr = range->end_addr;
673 __skb_unlink(entry, &priv->tx_queue);
674 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
675
676 entry_hdr = (struct p54_hdr *) entry->data;
677 entry_data = (struct p54_tx_data *) entry_hdr->data;
678 priv->tx_stats[entry_data->hw_queue].len--;
679
680 if (unlikely(entry == priv->cached_beacon)) {
681 kfree_skb(entry);
682 priv->cached_beacon = NULL;
683 goto out;
684 }
685
686 /*
687 * Clear manually, ieee80211_tx_info_clear_status would
688 * clear the counts too and we need them.
689 */
690 memset(&info->status.ampdu_ack_len, 0,
691 sizeof(struct ieee80211_tx_info) -
692 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
693 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
694 status.ampdu_ack_len) != 23);
695
696 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
697 pad = entry_data->align[0];
698
699 /* walk through the rates array and adjust the counts */
700 count = payload->tries;
701 for (idx = 0; idx < 4; idx++) {
702 if (count >= info->status.rates[idx].count) {
703 count -= info->status.rates[idx].count;
704 } else if (count > 0) {
705 info->status.rates[idx].count = count;
706 count = 0;
707 } else {
708 info->status.rates[idx].idx = -1;
709 info->status.rates[idx].count = 0;
710 }
711 }
712
713 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
714 (!payload->status))
715 info->flags |= IEEE80211_TX_STAT_ACK;
716 if (payload->status & P54_TX_PSM_CANCELLED)
717 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
718 info->status.ack_signal = p54_rssi_to_dbm(dev,
719 (int)payload->ack_rssi);
720 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
721 ieee80211_tx_status_irqsafe(dev, entry);
722 goto out;
723 }
724 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
725
726 out:
727 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
728 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
729 p54_wake_free_queues(dev);
730 }
731
732 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
733 struct sk_buff *skb)
734 {
735 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
736 struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
737 struct p54_common *priv = dev->priv;
738
739 if (!priv->eeprom)
740 return ;
741
742 if (priv->fw_var >= 0x509) {
743 memcpy(priv->eeprom, eeprom->v2.data,
744 le16_to_cpu(eeprom->v2.len));
745 } else {
746 memcpy(priv->eeprom, eeprom->v1.data,
747 le16_to_cpu(eeprom->v1.len));
748 }
749
750 complete(&priv->eeprom_comp);
751 }
752
753 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
754 {
755 struct p54_common *priv = dev->priv;
756 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
757 struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
758 u32 tsf32 = le32_to_cpu(stats->tsf32);
759
760 if (tsf32 < priv->tsf_low32)
761 priv->tsf_high32++;
762 priv->tsf_low32 = tsf32;
763
764 priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
765 priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
766 priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
767
768 priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
769 complete(&priv->stats_comp);
770
771 mod_timer(&priv->stats_timer, jiffies + 5 * HZ);
772 }
773
774 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
775 {
776 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
777 struct p54_trap *trap = (struct p54_trap *) hdr->data;
778 u16 event = le16_to_cpu(trap->event);
779 u16 freq = le16_to_cpu(trap->frequency);
780
781 switch (event) {
782 case P54_TRAP_BEACON_TX:
783 break;
784 case P54_TRAP_RADAR:
785 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
786 wiphy_name(dev->wiphy), freq);
787 break;
788 case P54_TRAP_NO_BEACON:
789 break;
790 case P54_TRAP_SCAN:
791 break;
792 case P54_TRAP_TBTT:
793 break;
794 case P54_TRAP_TIMER:
795 break;
796 default:
797 printk(KERN_INFO "%s: received event:%x freq:%d\n",
798 wiphy_name(dev->wiphy), event, freq);
799 break;
800 }
801 }
802
803 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
804 {
805 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
806
807 switch (le16_to_cpu(hdr->type)) {
808 case P54_CONTROL_TYPE_TXDONE:
809 p54_rx_frame_sent(dev, skb);
810 break;
811 case P54_CONTROL_TYPE_TRAP:
812 p54_rx_trap(dev, skb);
813 break;
814 case P54_CONTROL_TYPE_BBP:
815 break;
816 case P54_CONTROL_TYPE_STAT_READBACK:
817 p54_rx_stats(dev, skb);
818 break;
819 case P54_CONTROL_TYPE_EEPROM_READBACK:
820 p54_rx_eeprom_readback(dev, skb);
821 break;
822 default:
823 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
824 wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
825 break;
826 }
827
828 return 0;
829 }
830
831 /* returns zero if skb can be reused */
832 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
833 {
834 u16 type = le16_to_cpu(*((__le16 *)skb->data));
835
836 if (type & P54_HDR_FLAG_CONTROL)
837 return p54_rx_control(dev, skb);
838 else
839 return p54_rx_data(dev, skb);
840 }
841 EXPORT_SYMBOL_GPL(p54_rx);
842
843 /*
844 * So, the firmware is somewhat stupid and doesn't know what places in its
845 * memory incoming data should go to. By poking around in the firmware, we
846 * can find some unused memory to upload our packets to. However, data that we
847 * want the card to TX needs to stay intact until the card has told us that
848 * it is done with it. This function finds empty places we can upload to and
849 * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
850 * allocated areas.
851 */
852 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
853 struct p54_hdr *data, u32 len)
854 {
855 struct p54_common *priv = dev->priv;
856 struct sk_buff *entry = priv->tx_queue.next;
857 struct sk_buff *target_skb = NULL;
858 struct ieee80211_tx_info *info;
859 struct memrecord *range;
860 u32 last_addr = priv->rx_start;
861 u32 largest_hole = 0;
862 u32 target_addr = priv->rx_start;
863 unsigned long flags;
864 unsigned int left;
865 len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
866
867 if (!skb)
868 return -EINVAL;
869
870 spin_lock_irqsave(&priv->tx_queue.lock, flags);
871 left = skb_queue_len(&priv->tx_queue);
872 while (left--) {
873 u32 hole_size;
874 info = IEEE80211_SKB_CB(entry);
875 range = (void *)info->rate_driver_data;
876 hole_size = range->start_addr - last_addr;
877 if (!target_skb && hole_size >= len) {
878 target_skb = entry->prev;
879 hole_size -= len;
880 target_addr = last_addr;
881 }
882 largest_hole = max(largest_hole, hole_size);
883 last_addr = range->end_addr;
884 entry = entry->next;
885 }
886 if (!target_skb && priv->rx_end - last_addr >= len) {
887 target_skb = priv->tx_queue.prev;
888 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
889 if (!skb_queue_empty(&priv->tx_queue)) {
890 info = IEEE80211_SKB_CB(target_skb);
891 range = (void *)info->rate_driver_data;
892 target_addr = range->end_addr;
893 }
894 } else
895 largest_hole = max(largest_hole, priv->rx_end - last_addr);
896
897 if (!target_skb) {
898 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
899 ieee80211_stop_queues(dev);
900 return -ENOMEM;
901 }
902
903 info = IEEE80211_SKB_CB(skb);
904 range = (void *)info->rate_driver_data;
905 range->start_addr = target_addr;
906 range->end_addr = target_addr + len;
907 __skb_queue_after(&priv->tx_queue, target_skb, skb);
908 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
909
910 if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
911 48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
912 ieee80211_stop_queues(dev);
913
914 data->req_id = cpu_to_le32(target_addr + priv->headroom);
915 return 0;
916 }
917
918 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev,
919 u16 hdr_flags, u16 len, u16 type, gfp_t memflags)
920 {
921 struct p54_common *priv = dev->priv;
922 struct p54_hdr *hdr;
923 struct sk_buff *skb;
924
925 skb = __dev_alloc_skb(len + priv->tx_hdr_len, memflags);
926 if (!skb)
927 return NULL;
928 skb_reserve(skb, priv->tx_hdr_len);
929
930 hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
931 hdr->flags = cpu_to_le16(hdr_flags);
932 hdr->len = cpu_to_le16(len - sizeof(*hdr));
933 hdr->type = cpu_to_le16(type);
934 hdr->tries = hdr->rts_tries = 0;
935
936 if (unlikely(p54_assign_address(dev, skb, hdr, len))) {
937 kfree_skb(skb);
938 return NULL;
939 }
940 return skb;
941 }
942
943 int p54_read_eeprom(struct ieee80211_hw *dev)
944 {
945 struct p54_common *priv = dev->priv;
946 struct p54_hdr *hdr = NULL;
947 struct p54_eeprom_lm86 *eeprom_hdr;
948 struct sk_buff *skb;
949 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
950 int ret = -ENOMEM;
951 void *eeprom = NULL;
952
953 maxblocksize = EEPROM_READBACK_LEN;
954 if (priv->fw_var >= 0x509)
955 maxblocksize -= 0xc;
956 else
957 maxblocksize -= 0x4;
958
959 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*hdr) +
960 sizeof(*eeprom_hdr) + maxblocksize,
961 P54_CONTROL_TYPE_EEPROM_READBACK, GFP_KERNEL);
962 if (!skb)
963 goto free;
964 priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
965 if (!priv->eeprom)
966 goto free;
967 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
968 if (!eeprom)
969 goto free;
970
971 eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
972 sizeof(*eeprom_hdr) + maxblocksize);
973
974 while (eeprom_size) {
975 blocksize = min(eeprom_size, maxblocksize);
976 if (priv->fw_var < 0x509) {
977 eeprom_hdr->v1.offset = cpu_to_le16(offset);
978 eeprom_hdr->v1.len = cpu_to_le16(blocksize);
979 } else {
980 eeprom_hdr->v2.offset = cpu_to_le32(offset);
981 eeprom_hdr->v2.len = cpu_to_le16(blocksize);
982 eeprom_hdr->v2.magic2 = 0xf;
983 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
984 }
985 priv->tx(dev, skb, 0);
986
987 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
988 printk(KERN_ERR "%s: device does not respond!\n",
989 wiphy_name(dev->wiphy));
990 ret = -EBUSY;
991 goto free;
992 }
993
994 memcpy(eeprom + offset, priv->eeprom, blocksize);
995 offset += blocksize;
996 eeprom_size -= blocksize;
997 }
998
999 ret = p54_parse_eeprom(dev, eeprom, offset);
1000 free:
1001 kfree(priv->eeprom);
1002 priv->eeprom = NULL;
1003 p54_free_skb(dev, skb);
1004 kfree(eeprom);
1005
1006 return ret;
1007 }
1008 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1009
1010 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1011 bool set)
1012 {
1013 struct p54_common *priv = dev->priv;
1014 struct sk_buff *skb;
1015 struct p54_tim *tim;
1016
1017 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1018 sizeof(struct p54_hdr) + sizeof(*tim),
1019 P54_CONTROL_TYPE_TIM, GFP_KERNEL);
1020 if (!skb)
1021 return -ENOMEM;
1022
1023 tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1024 tim->count = 1;
1025 tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1026 priv->tx(dev, skb, 1);
1027 return 0;
1028 }
1029
1030 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1031 {
1032 struct p54_common *priv = dev->priv;
1033 struct sk_buff *skb;
1034 struct p54_sta_unlock *sta;
1035
1036 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1037 sizeof(struct p54_hdr) + sizeof(*sta),
1038 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1039 if (!skb)
1040 return -ENOMEM;
1041
1042 sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1043 memcpy(sta->addr, addr, ETH_ALEN);
1044 priv->tx(dev, skb, 1);
1045 return 0;
1046 }
1047
1048 static void p54_sta_notify_ps(struct ieee80211_hw *dev,
1049 enum sta_notify_ps_cmd notify_cmd,
1050 struct ieee80211_sta *sta)
1051 {
1052 switch (notify_cmd) {
1053 case STA_NOTIFY_AWAKE:
1054 p54_sta_unlock(dev, sta->addr);
1055 break;
1056 default:
1057 break;
1058 }
1059 }
1060
1061 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1062 enum sta_notify_cmd notify_cmd,
1063 struct ieee80211_sta *sta)
1064 {
1065 switch (notify_cmd) {
1066 case STA_NOTIFY_ADD:
1067 case STA_NOTIFY_REMOVE:
1068 /*
1069 * Notify the firmware that we don't want or we don't
1070 * need to buffer frames for this station anymore.
1071 */
1072
1073 p54_sta_unlock(dev, sta->addr);
1074 break;
1075 default:
1076 break;
1077 }
1078 }
1079
1080 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1081 {
1082 struct p54_common *priv = dev->priv;
1083 struct sk_buff *skb;
1084 struct p54_hdr *hdr;
1085 struct p54_txcancel *cancel;
1086
1087 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1088 sizeof(struct p54_hdr) + sizeof(*cancel),
1089 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1090 if (!skb)
1091 return -ENOMEM;
1092
1093 hdr = (void *)entry->data;
1094 cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1095 cancel->req_id = hdr->req_id;
1096 priv->tx(dev, skb, 1);
1097 return 0;
1098 }
1099
1100 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1101 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1102 u16 *flags, u16 *aid)
1103 {
1104 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1105 struct p54_common *priv = dev->priv;
1106 int ret = 0;
1107
1108 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1109 if (ieee80211_is_beacon(hdr->frame_control)) {
1110 *aid = 0;
1111 *queue = 0;
1112 *extra_len = IEEE80211_MAX_TIM_LEN;
1113 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1114 return 0;
1115 } else if (ieee80211_is_probe_resp(hdr->frame_control)) {
1116 *aid = 0;
1117 *queue = 2;
1118 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1119 P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1120 return 0;
1121 } else {
1122 *queue = 2;
1123 ret = 0;
1124 }
1125 } else {
1126 *queue += 4;
1127 ret = 1;
1128 }
1129
1130 switch (priv->mode) {
1131 case NL80211_IFTYPE_STATION:
1132 *aid = 1;
1133 break;
1134 case NL80211_IFTYPE_AP:
1135 case NL80211_IFTYPE_ADHOC:
1136 case NL80211_IFTYPE_MESH_POINT:
1137 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1138 *aid = 0;
1139 *queue = 3;
1140 return 0;
1141 }
1142 if (info->control.sta)
1143 *aid = info->control.sta->aid;
1144 else
1145 *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1146 }
1147 return ret;
1148 }
1149
1150 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1151 {
1152 switch (alg) {
1153 case ALG_WEP:
1154 return P54_CRYPTO_WEP;
1155 case ALG_TKIP:
1156 return P54_CRYPTO_TKIPMICHAEL;
1157 case ALG_CCMP:
1158 return P54_CRYPTO_AESCCMP;
1159 default:
1160 return 0;
1161 }
1162 }
1163
1164 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1165 {
1166 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1167 struct ieee80211_tx_queue_stats *current_queue = NULL;
1168 struct p54_common *priv = dev->priv;
1169 struct p54_hdr *hdr;
1170 struct p54_tx_data *txhdr;
1171 size_t padding, len, tim_len = 0;
1172 int i, j, ridx, ret;
1173 u16 hdr_flags = 0, aid = 0;
1174 u8 rate, queue, crypt_offset = 0;
1175 u8 cts_rate = 0x20;
1176 u8 rc_flags;
1177 u8 calculated_tries[4];
1178 u8 nrates = 0, nremaining = 8;
1179
1180 queue = skb_get_queue_mapping(skb);
1181
1182 ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1183 current_queue = &priv->tx_stats[queue];
1184 if (unlikely((current_queue->len > current_queue->limit) && ret))
1185 return NETDEV_TX_BUSY;
1186 current_queue->len++;
1187 current_queue->count++;
1188 if ((current_queue->len == current_queue->limit) && ret)
1189 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1190
1191 padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1192 len = skb->len;
1193
1194 if (info->control.hw_key) {
1195 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1196 if (info->control.hw_key->alg == ALG_TKIP) {
1197 u8 *iv = (u8 *)(skb->data + crypt_offset);
1198 /*
1199 * The firmware excepts that the IV has to have
1200 * this special format
1201 */
1202 iv[1] = iv[0];
1203 iv[0] = iv[2];
1204 iv[2] = 0;
1205 }
1206 }
1207
1208 txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1209 hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1210
1211 if (padding)
1212 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1213 hdr->type = cpu_to_le16(aid);
1214 hdr->rts_tries = info->control.rates[0].count;
1215
1216 /*
1217 * we register the rates in perfect order, and
1218 * RTS/CTS won't happen on 5 GHz
1219 */
1220 cts_rate = info->control.rts_cts_rate_idx;
1221
1222 memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1223
1224 /* see how many rates got used */
1225 for (i = 0; i < 4; i++) {
1226 if (info->control.rates[i].idx < 0)
1227 break;
1228 nrates++;
1229 }
1230
1231 /* limit tries to 8/nrates per rate */
1232 for (i = 0; i < nrates; i++) {
1233 /*
1234 * The magic expression here is equivalent to 8/nrates for
1235 * all values that matter, but avoids division and jumps.
1236 * Note that nrates can only take the values 1 through 4.
1237 */
1238 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1239 info->control.rates[i].count);
1240 nremaining -= calculated_tries[i];
1241 }
1242
1243 /* if there are tries left, distribute from back to front */
1244 for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1245 int tmp = info->control.rates[i].count - calculated_tries[i];
1246
1247 if (tmp <= 0)
1248 continue;
1249 /* RC requested more tries at this rate */
1250
1251 tmp = min_t(int, tmp, nremaining);
1252 calculated_tries[i] += tmp;
1253 nremaining -= tmp;
1254 }
1255
1256 ridx = 0;
1257 for (i = 0; i < nrates && ridx < 8; i++) {
1258 /* we register the rates in perfect order */
1259 rate = info->control.rates[i].idx;
1260 if (info->band == IEEE80211_BAND_5GHZ)
1261 rate += 4;
1262
1263 /* store the count we actually calculated for TX status */
1264 info->control.rates[i].count = calculated_tries[i];
1265
1266 rc_flags = info->control.rates[i].flags;
1267 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1268 rate |= 0x10;
1269 cts_rate |= 0x10;
1270 }
1271 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1272 rate |= 0x40;
1273 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1274 rate |= 0x20;
1275 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1276 txhdr->rateset[ridx] = rate;
1277 ridx++;
1278 }
1279 }
1280
1281 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1282 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1283
1284 /* TODO: enable bursting */
1285 hdr->flags = cpu_to_le16(hdr_flags);
1286 hdr->tries = ridx;
1287 txhdr->rts_rate_idx = 0;
1288 if (info->control.hw_key) {
1289 crypt_offset += info->control.hw_key->iv_len;
1290 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1291 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1292 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1293 if (info->control.hw_key->alg == ALG_TKIP) {
1294 if (unlikely(skb_tailroom(skb) < 12))
1295 goto err;
1296 /* reserve space for the MIC key */
1297 len += 8;
1298 memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1299 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1300 }
1301 /* reserve some space for ICV */
1302 len += info->control.hw_key->icv_len;
1303 } else {
1304 txhdr->key_type = 0;
1305 txhdr->key_len = 0;
1306 }
1307 txhdr->crypt_offset = crypt_offset;
1308 txhdr->hw_queue = queue;
1309 if (current_queue)
1310 txhdr->backlog = current_queue->len;
1311 else
1312 txhdr->backlog = 0;
1313 memset(txhdr->durations, 0, sizeof(txhdr->durations));
1314 txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
1315 2 : info->antenna_sel_tx - 1;
1316 txhdr->output_power = priv->output_power;
1317 txhdr->cts_rate = cts_rate;
1318 if (padding)
1319 txhdr->align[0] = padding;
1320
1321 hdr->len = cpu_to_le16(len);
1322 /* modifies skb->cb and with it info, so must be last! */
1323 if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1324 goto err;
1325 priv->tx(dev, skb, 0);
1326 return 0;
1327
1328 err:
1329 skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1330 if (current_queue) {
1331 current_queue->len--;
1332 current_queue->count--;
1333 }
1334 return NETDEV_TX_BUSY;
1335 }
1336
1337 static int p54_setup_mac(struct ieee80211_hw *dev, u16 mode, const u8 *bssid)
1338 {
1339 struct p54_common *priv = dev->priv;
1340 struct sk_buff *skb;
1341 struct p54_setup_mac *setup;
1342
1343 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup) +
1344 sizeof(struct p54_hdr), P54_CONTROL_TYPE_SETUP,
1345 GFP_ATOMIC);
1346 if (!skb)
1347 return -ENOMEM;
1348
1349 setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1350 priv->mac_mode = mode;
1351 setup->mac_mode = cpu_to_le16(mode);
1352 memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1353 if (!bssid)
1354 memset(setup->bssid, ~0, ETH_ALEN);
1355 else
1356 memcpy(setup->bssid, bssid, ETH_ALEN);
1357 setup->rx_antenna = priv->rx_antenna;
1358 setup->rx_align = 0;
1359 if (priv->fw_var < 0x500) {
1360 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1361 memset(setup->v1.rts_rates, 0, 8);
1362 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1363 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1364 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1365 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1366 setup->v1.unalloc0 = cpu_to_le16(0);
1367 } else {
1368 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1369 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1370 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1371 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1372 setup->v2.truncate = cpu_to_le16(48896);
1373 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1374 setup->v2.sbss_offset = 0;
1375 setup->v2.mcast_window = 0;
1376 setup->v2.rx_rssi_threshold = 0;
1377 setup->v2.rx_ed_threshold = 0;
1378 setup->v2.ref_clock = cpu_to_le32(644245094);
1379 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1380 setup->v2.osc_start_delay = cpu_to_le16(65535);
1381 }
1382 priv->tx(dev, skb, 1);
1383 return 0;
1384 }
1385
1386 static int p54_set_freq(struct ieee80211_hw *dev, u16 frequency)
1387 {
1388 struct p54_common *priv = dev->priv;
1389 struct sk_buff *skb;
1390 struct p54_scan *chan;
1391 unsigned int i;
1392 void *entry;
1393 __le16 freq = cpu_to_le16(frequency);
1394
1395 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan) +
1396 sizeof(struct p54_hdr), P54_CONTROL_TYPE_SCAN,
1397 GFP_ATOMIC);
1398 if (!skb)
1399 return -ENOMEM;
1400
1401 chan = (struct p54_scan *) skb_put(skb, sizeof(*chan));
1402 memset(chan->padding1, 0, sizeof(chan->padding1));
1403 chan->mode = cpu_to_le16(P54_SCAN_EXIT);
1404 chan->dwell = cpu_to_le16(0x0);
1405
1406 for (i = 0; i < priv->iq_autocal_len; i++) {
1407 if (priv->iq_autocal[i].freq != freq)
1408 continue;
1409
1410 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
1411 sizeof(*priv->iq_autocal));
1412 break;
1413 }
1414 if (i == priv->iq_autocal_len)
1415 goto err;
1416
1417 for (i = 0; i < priv->output_limit_len; i++) {
1418 if (priv->output_limit[i].freq != freq)
1419 continue;
1420
1421 chan->val_barker = 0x38;
1422 chan->val_bpsk = chan->dup_bpsk =
1423 priv->output_limit[i].val_bpsk;
1424 chan->val_qpsk = chan->dup_qpsk =
1425 priv->output_limit[i].val_qpsk;
1426 chan->val_16qam = chan->dup_16qam =
1427 priv->output_limit[i].val_16qam;
1428 chan->val_64qam = chan->dup_64qam =
1429 priv->output_limit[i].val_64qam;
1430 break;
1431 }
1432 if (i == priv->output_limit_len)
1433 goto err;
1434
1435 entry = priv->curve_data->data;
1436 for (i = 0; i < priv->curve_data->channels; i++) {
1437 if (*((__le16 *)entry) != freq) {
1438 entry += sizeof(__le16);
1439 entry += sizeof(struct p54_pa_curve_data_sample) *
1440 priv->curve_data->points_per_channel;
1441 continue;
1442 }
1443
1444 entry += sizeof(__le16);
1445 chan->pa_points_per_curve = 8;
1446 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1447 memcpy(chan->curve_data, entry,
1448 sizeof(struct p54_pa_curve_data_sample) *
1449 min((u8)8, priv->curve_data->points_per_channel));
1450 break;
1451 }
1452
1453 if (priv->fw_var < 0x500) {
1454 chan->v1.rssical_mul = cpu_to_le16(130);
1455 chan->v1.rssical_add = cpu_to_le16(0xfe70);
1456 } else {
1457 chan->v2.rssical_mul = cpu_to_le16(130);
1458 chan->v2.rssical_add = cpu_to_le16(0xfe70);
1459 chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1460 memset(chan->v2.rts_rates, 0, 8);
1461 }
1462 priv->tx(dev, skb, 1);
1463 return 0;
1464
1465 err:
1466 printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1467 kfree_skb(skb);
1468 return -EINVAL;
1469 }
1470
1471 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1472 {
1473 struct p54_common *priv = dev->priv;
1474 struct sk_buff *skb;
1475 struct p54_led *led;
1476
1477 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led) +
1478 sizeof(struct p54_hdr), P54_CONTROL_TYPE_LED,
1479 GFP_ATOMIC);
1480 if (!skb)
1481 return -ENOMEM;
1482
1483 led = (struct p54_led *)skb_put(skb, sizeof(*led));
1484 led->mode = cpu_to_le16(mode);
1485 led->led_permanent = cpu_to_le16(link);
1486 led->led_temporary = cpu_to_le16(act);
1487 led->duration = cpu_to_le16(1000);
1488 priv->tx(dev, skb, 1);
1489 return 0;
1490 }
1491
1492 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
1493 do { \
1494 queue.aifs = cpu_to_le16(ai_fs); \
1495 queue.cwmin = cpu_to_le16(cw_min); \
1496 queue.cwmax = cpu_to_le16(cw_max); \
1497 queue.txop = cpu_to_le16(_txop); \
1498 } while(0)
1499
1500 static int p54_set_edcf(struct ieee80211_hw *dev)
1501 {
1502 struct p54_common *priv = dev->priv;
1503 struct sk_buff *skb;
1504 struct p54_edcf *edcf;
1505
1506 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf) +
1507 sizeof(struct p54_hdr), P54_CONTROL_TYPE_DCFINIT,
1508 GFP_ATOMIC);
1509 if (!skb)
1510 return -ENOMEM;
1511
1512 edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1513 if (priv->use_short_slot) {
1514 edcf->slottime = 9;
1515 edcf->sifs = 0x10;
1516 edcf->eofpad = 0x00;
1517 } else {
1518 edcf->slottime = 20;
1519 edcf->sifs = 0x0a;
1520 edcf->eofpad = 0x06;
1521 }
1522 /* (see prism54/isl_oid.h for further details) */
1523 edcf->frameburst = cpu_to_le16(0);
1524 edcf->round_trip_delay = cpu_to_le16(0);
1525 edcf->flags = 0;
1526 memset(edcf->mapping, 0, sizeof(edcf->mapping));
1527 memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1528 priv->tx(dev, skb, 1);
1529 return 0;
1530 }
1531
1532 static int p54_init_stats(struct ieee80211_hw *dev)
1533 {
1534 struct p54_common *priv = dev->priv;
1535
1536 priv->cached_stats = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
1537 sizeof(struct p54_hdr) + sizeof(struct p54_statistics),
1538 P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
1539 if (!priv->cached_stats)
1540 return -ENOMEM;
1541
1542 mod_timer(&priv->stats_timer, jiffies + HZ);
1543 return 0;
1544 }
1545
1546 static int p54_beacon_tim(struct sk_buff *skb)
1547 {
1548 /*
1549 * the good excuse for this mess is ... the firmware.
1550 * The dummy TIM MUST be at the end of the beacon frame,
1551 * because it'll be overwritten!
1552 */
1553
1554 struct ieee80211_mgmt *mgmt = (void *)skb->data;
1555 u8 *pos, *end;
1556
1557 if (skb->len <= sizeof(mgmt)) {
1558 printk(KERN_ERR "p54: beacon is too short!\n");
1559 return -EINVAL;
1560 }
1561
1562 pos = (u8 *)mgmt->u.beacon.variable;
1563 end = skb->data + skb->len;
1564 while (pos < end) {
1565 if (pos + 2 + pos[1] > end) {
1566 printk(KERN_ERR "p54: parsing beacon failed\n");
1567 return -EINVAL;
1568 }
1569
1570 if (pos[0] == WLAN_EID_TIM) {
1571 u8 dtim_len = pos[1];
1572 u8 dtim_period = pos[3];
1573 u8 *next = pos + 2 + dtim_len;
1574
1575 if (dtim_len < 3) {
1576 printk(KERN_ERR "p54: invalid dtim len!\n");
1577 return -EINVAL;
1578 }
1579 memmove(pos, next, end - next);
1580
1581 if (dtim_len > 3)
1582 skb_trim(skb, skb->len - (dtim_len - 3));
1583
1584 pos = end - (dtim_len + 2);
1585
1586 /* add the dummy at the end */
1587 pos[0] = WLAN_EID_TIM;
1588 pos[1] = 3;
1589 pos[2] = 0;
1590 pos[3] = dtim_period;
1591 pos[4] = 0;
1592 return 0;
1593 }
1594 pos += 2 + pos[1];
1595 }
1596 return 0;
1597 }
1598
1599 static int p54_beacon_update(struct ieee80211_hw *dev,
1600 struct ieee80211_vif *vif)
1601 {
1602 struct p54_common *priv = dev->priv;
1603 struct sk_buff *beacon;
1604 int ret;
1605
1606 if (priv->cached_beacon) {
1607 p54_tx_cancel(dev, priv->cached_beacon);
1608 /* wait for the last beacon the be freed */
1609 msleep(10);
1610 }
1611
1612 beacon = ieee80211_beacon_get(dev, vif);
1613 if (!beacon)
1614 return -ENOMEM;
1615 ret = p54_beacon_tim(beacon);
1616 if (ret)
1617 return ret;
1618 ret = p54_tx(dev, beacon);
1619 if (ret)
1620 return ret;
1621 priv->cached_beacon = beacon;
1622 priv->tsf_high32 = 0;
1623 priv->tsf_low32 = 0;
1624
1625 return 0;
1626 }
1627
1628 static int p54_start(struct ieee80211_hw *dev)
1629 {
1630 struct p54_common *priv = dev->priv;
1631 int err;
1632
1633 mutex_lock(&priv->conf_mutex);
1634 err = priv->open(dev);
1635 if (err)
1636 goto out;
1637 P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
1638 P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
1639 P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
1640 P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
1641 err = p54_set_edcf(dev);
1642 if (err)
1643 goto out;
1644 err = p54_init_stats(dev);
1645 if (err)
1646 goto out;
1647 err = p54_setup_mac(dev, P54_FILTER_TYPE_NONE, NULL);
1648 if (err)
1649 goto out;
1650 priv->mode = NL80211_IFTYPE_MONITOR;
1651
1652 out:
1653 mutex_unlock(&priv->conf_mutex);
1654 return err;
1655 }
1656
1657 static void p54_stop(struct ieee80211_hw *dev)
1658 {
1659 struct p54_common *priv = dev->priv;
1660 struct sk_buff *skb;
1661
1662 mutex_lock(&priv->conf_mutex);
1663 del_timer(&priv->stats_timer);
1664 p54_free_skb(dev, priv->cached_stats);
1665 priv->cached_stats = NULL;
1666 if (priv->cached_beacon)
1667 p54_tx_cancel(dev, priv->cached_beacon);
1668
1669 while ((skb = skb_dequeue(&priv->tx_queue)))
1670 kfree_skb(skb);
1671
1672 priv->cached_beacon = NULL;
1673 priv->stop(dev);
1674 priv->tsf_high32 = priv->tsf_low32 = 0;
1675 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1676 mutex_unlock(&priv->conf_mutex);
1677 }
1678
1679 static int p54_add_interface(struct ieee80211_hw *dev,
1680 struct ieee80211_if_init_conf *conf)
1681 {
1682 struct p54_common *priv = dev->priv;
1683
1684 mutex_lock(&priv->conf_mutex);
1685 if (priv->mode != NL80211_IFTYPE_MONITOR) {
1686 mutex_unlock(&priv->conf_mutex);
1687 return -EOPNOTSUPP;
1688 }
1689
1690 switch (conf->type) {
1691 case NL80211_IFTYPE_STATION:
1692 case NL80211_IFTYPE_ADHOC:
1693 case NL80211_IFTYPE_AP:
1694 case NL80211_IFTYPE_MESH_POINT:
1695 priv->mode = conf->type;
1696 break;
1697 default:
1698 mutex_unlock(&priv->conf_mutex);
1699 return -EOPNOTSUPP;
1700 }
1701
1702 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1703
1704 p54_setup_mac(dev, P54_FILTER_TYPE_NONE, NULL);
1705
1706 switch (conf->type) {
1707 case NL80211_IFTYPE_STATION:
1708 p54_setup_mac(dev, P54_FILTER_TYPE_STATION, NULL);
1709 break;
1710 case NL80211_IFTYPE_AP:
1711 p54_setup_mac(dev, P54_FILTER_TYPE_AP, priv->mac_addr);
1712 break;
1713 case NL80211_IFTYPE_ADHOC:
1714 case NL80211_IFTYPE_MESH_POINT:
1715 p54_setup_mac(dev, P54_FILTER_TYPE_IBSS, NULL);
1716 break;
1717 default:
1718 BUG(); /* impossible */
1719 break;
1720 }
1721
1722 p54_set_leds(dev, 1, 0, 0);
1723
1724 mutex_unlock(&priv->conf_mutex);
1725 return 0;
1726 }
1727
1728 static void p54_remove_interface(struct ieee80211_hw *dev,
1729 struct ieee80211_if_init_conf *conf)
1730 {
1731 struct p54_common *priv = dev->priv;
1732
1733 mutex_lock(&priv->conf_mutex);
1734 if (priv->cached_beacon)
1735 p54_tx_cancel(dev, priv->cached_beacon);
1736 p54_setup_mac(dev, P54_FILTER_TYPE_NONE, NULL);
1737 priv->mode = NL80211_IFTYPE_MONITOR;
1738 memset(priv->mac_addr, 0, ETH_ALEN);
1739 mutex_unlock(&priv->conf_mutex);
1740 }
1741
1742 static int p54_config(struct ieee80211_hw *dev, u32 changed)
1743 {
1744 int ret;
1745 struct p54_common *priv = dev->priv;
1746 struct ieee80211_conf *conf = &dev->conf;
1747
1748 mutex_lock(&priv->conf_mutex);
1749 priv->rx_antenna = 2; /* automatic */
1750 priv->output_power = conf->power_level << 2;
1751 ret = p54_set_freq(dev, conf->channel->center_freq);
1752 if (!ret)
1753 ret = p54_set_edcf(dev);
1754 mutex_unlock(&priv->conf_mutex);
1755 return ret;
1756 }
1757
1758 static int p54_config_interface(struct ieee80211_hw *dev,
1759 struct ieee80211_vif *vif,
1760 struct ieee80211_if_conf *conf)
1761 {
1762 struct p54_common *priv = dev->priv;
1763 int ret = 0;
1764
1765 mutex_lock(&priv->conf_mutex);
1766 switch (priv->mode) {
1767 case NL80211_IFTYPE_STATION:
1768 ret = p54_setup_mac(dev, P54_FILTER_TYPE_STATION, conf->bssid);
1769 if (ret)
1770 goto out;
1771 ret = p54_set_leds(dev, 1,
1772 !is_multicast_ether_addr(conf->bssid), 0);
1773 if (ret)
1774 goto out;
1775 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1776 break;
1777 case NL80211_IFTYPE_AP:
1778 case NL80211_IFTYPE_ADHOC:
1779 case NL80211_IFTYPE_MESH_POINT:
1780 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1781 ret = p54_set_freq(dev, dev->conf.channel->center_freq);
1782 if (ret)
1783 goto out;
1784 ret = p54_setup_mac(dev, priv->mac_mode, priv->bssid);
1785 if (ret)
1786 goto out;
1787 if (conf->changed & IEEE80211_IFCC_BEACON) {
1788 ret = p54_beacon_update(dev, vif);
1789 if (ret)
1790 goto out;
1791 ret = p54_set_edcf(dev);
1792 if (ret)
1793 goto out;
1794 }
1795 }
1796 out:
1797 mutex_unlock(&priv->conf_mutex);
1798 return ret;
1799 }
1800
1801 static void p54_configure_filter(struct ieee80211_hw *dev,
1802 unsigned int changed_flags,
1803 unsigned int *total_flags,
1804 int mc_count, struct dev_mc_list *mclist)
1805 {
1806 struct p54_common *priv = dev->priv;
1807
1808 *total_flags &= FIF_BCN_PRBRESP_PROMISC |
1809 FIF_PROMISC_IN_BSS |
1810 FIF_FCSFAIL;
1811
1812 priv->filter_flags = *total_flags;
1813
1814 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1815 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1816 p54_setup_mac(dev, priv->mac_mode, NULL);
1817 else
1818 p54_setup_mac(dev, priv->mac_mode, priv->bssid);
1819 }
1820
1821 if (changed_flags & FIF_PROMISC_IN_BSS) {
1822 if (*total_flags & FIF_PROMISC_IN_BSS)
1823 p54_setup_mac(dev, priv->mac_mode | 0x8, NULL);
1824 else
1825 p54_setup_mac(dev, priv->mac_mode & ~0x8, priv->bssid);
1826 }
1827 }
1828
1829 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1830 const struct ieee80211_tx_queue_params *params)
1831 {
1832 struct p54_common *priv = dev->priv;
1833 int ret;
1834
1835 mutex_lock(&priv->conf_mutex);
1836 if ((params) && !(queue > 4)) {
1837 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
1838 params->cw_min, params->cw_max, params->txop);
1839 ret = p54_set_edcf(dev);
1840 } else
1841 ret = -EINVAL;
1842 mutex_unlock(&priv->conf_mutex);
1843 return ret;
1844 }
1845
1846 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
1847 {
1848 struct p54_common *priv = dev->priv;
1849 struct sk_buff *skb;
1850 struct p54_xbow_synth *xbow;
1851
1852 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow) +
1853 sizeof(struct p54_hdr),
1854 P54_CONTROL_TYPE_XBOW_SYNTH_CFG,
1855 GFP_KERNEL);
1856 if (!skb)
1857 return -ENOMEM;
1858
1859 xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
1860 xbow->magic1 = cpu_to_le16(0x1);
1861 xbow->magic2 = cpu_to_le16(0x2);
1862 xbow->freq = cpu_to_le16(5390);
1863 memset(xbow->padding, 0, sizeof(xbow->padding));
1864 priv->tx(dev, skb, 1);
1865 return 0;
1866 }
1867
1868 static void p54_statistics_timer(unsigned long data)
1869 {
1870 struct ieee80211_hw *dev = (struct ieee80211_hw *) data;
1871 struct p54_common *priv = dev->priv;
1872
1873 BUG_ON(!priv->cached_stats);
1874
1875 priv->tx(dev, priv->cached_stats, 0);
1876 }
1877
1878 static int p54_get_stats(struct ieee80211_hw *dev,
1879 struct ieee80211_low_level_stats *stats)
1880 {
1881 struct p54_common *priv = dev->priv;
1882
1883 del_timer(&priv->stats_timer);
1884 p54_statistics_timer((unsigned long)dev);
1885
1886 if (!wait_for_completion_interruptible_timeout(&priv->stats_comp, HZ)) {
1887 printk(KERN_ERR "%s: device does not respond!\n",
1888 wiphy_name(dev->wiphy));
1889 return -EBUSY;
1890 }
1891
1892 memcpy(stats, &priv->stats, sizeof(*stats));
1893
1894 return 0;
1895 }
1896
1897 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1898 struct ieee80211_tx_queue_stats *stats)
1899 {
1900 struct p54_common *priv = dev->priv;
1901
1902 memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1903
1904 return 0;
1905 }
1906
1907 static void p54_bss_info_changed(struct ieee80211_hw *dev,
1908 struct ieee80211_vif *vif,
1909 struct ieee80211_bss_conf *info,
1910 u32 changed)
1911 {
1912 struct p54_common *priv = dev->priv;
1913
1914 if (changed & BSS_CHANGED_ERP_SLOT) {
1915 priv->use_short_slot = info->use_short_slot;
1916 p54_set_edcf(dev);
1917 }
1918 if (changed & BSS_CHANGED_BASIC_RATES) {
1919 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
1920 priv->basic_rate_mask = (info->basic_rates << 4);
1921 else
1922 priv->basic_rate_mask = info->basic_rates;
1923 p54_setup_mac(dev, priv->mac_mode, priv->bssid);
1924 if (priv->fw_var >= 0x500)
1925 p54_set_freq(dev, dev->conf.channel->center_freq);
1926 }
1927 if (changed & BSS_CHANGED_ASSOC) {
1928 if (info->assoc) {
1929 priv->aid = info->aid;
1930 priv->wakeup_timer = info->beacon_int *
1931 info->dtim_period * 5;
1932 p54_setup_mac(dev, priv->mac_mode, priv->bssid);
1933 }
1934 }
1935
1936 }
1937
1938 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
1939 const u8 *local_address, const u8 *address,
1940 struct ieee80211_key_conf *key)
1941 {
1942 struct p54_common *priv = dev->priv;
1943 struct sk_buff *skb;
1944 struct p54_keycache *rxkey;
1945 u8 algo = 0;
1946
1947 if (modparam_nohwcrypt)
1948 return -EOPNOTSUPP;
1949
1950 if (cmd == DISABLE_KEY)
1951 algo = 0;
1952 else {
1953 switch (key->alg) {
1954 case ALG_TKIP:
1955 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
1956 BR_DESC_PRIV_CAP_TKIP)))
1957 return -EOPNOTSUPP;
1958 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1959 algo = P54_CRYPTO_TKIPMICHAEL;
1960 break;
1961 case ALG_WEP:
1962 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
1963 return -EOPNOTSUPP;
1964 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1965 algo = P54_CRYPTO_WEP;
1966 break;
1967 case ALG_CCMP:
1968 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
1969 return -EOPNOTSUPP;
1970 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1971 algo = P54_CRYPTO_AESCCMP;
1972 break;
1973 default:
1974 return -EINVAL;
1975 }
1976 }
1977
1978 if (key->keyidx > priv->rx_keycache_size) {
1979 /*
1980 * The device supports the choosen algorithm, but the firmware
1981 * does not provide enough key slots to store all of them.
1982 * So, incoming frames have to be decoded by the mac80211 stack,
1983 * but we can still offload encryption for outgoing frames.
1984 */
1985
1986 return 0;
1987 }
1988
1989 mutex_lock(&priv->conf_mutex);
1990 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey) +
1991 sizeof(struct p54_hdr), P54_CONTROL_TYPE_RX_KEYCACHE,
1992 GFP_ATOMIC);
1993 if (!skb) {
1994 mutex_unlock(&priv->conf_mutex);
1995 return -ENOMEM;
1996 }
1997
1998 /* TODO: some devices have 4 more free slots for rx keys */
1999 rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2000 rxkey->entry = key->keyidx;
2001 rxkey->key_id = key->keyidx;
2002 rxkey->key_type = algo;
2003 if (address)
2004 memcpy(rxkey->mac, address, ETH_ALEN);
2005 else
2006 memset(rxkey->mac, ~0, ETH_ALEN);
2007 if (key->alg != ALG_TKIP) {
2008 rxkey->key_len = min((u8)16, key->keylen);
2009 memcpy(rxkey->key, key->key, rxkey->key_len);
2010 } else {
2011 rxkey->key_len = 24;
2012 memcpy(rxkey->key, key->key, 16);
2013 memcpy(&(rxkey->key[16]), &(key->key
2014 [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2015 }
2016
2017 priv->tx(dev, skb, 1);
2018 mutex_unlock(&priv->conf_mutex);
2019 return 0;
2020 }
2021
2022 static const struct ieee80211_ops p54_ops = {
2023 .tx = p54_tx,
2024 .start = p54_start,
2025 .stop = p54_stop,
2026 .add_interface = p54_add_interface,
2027 .remove_interface = p54_remove_interface,
2028 .set_tim = p54_set_tim,
2029 .sta_notify_ps = p54_sta_notify_ps,
2030 .sta_notify = p54_sta_notify,
2031 .set_key = p54_set_key,
2032 .config = p54_config,
2033 .config_interface = p54_config_interface,
2034 .bss_info_changed = p54_bss_info_changed,
2035 .configure_filter = p54_configure_filter,
2036 .conf_tx = p54_conf_tx,
2037 .get_stats = p54_get_stats,
2038 .get_tx_stats = p54_get_tx_stats
2039 };
2040
2041 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2042 {
2043 struct ieee80211_hw *dev;
2044 struct p54_common *priv;
2045
2046 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2047 if (!dev)
2048 return NULL;
2049
2050 priv = dev->priv;
2051 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2052 priv->basic_rate_mask = 0x15f;
2053 skb_queue_head_init(&priv->tx_queue);
2054 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2055 IEEE80211_HW_SIGNAL_DBM |
2056 IEEE80211_HW_NOISE_DBM;
2057
2058 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2059 BIT(NL80211_IFTYPE_ADHOC) |
2060 BIT(NL80211_IFTYPE_AP) |
2061 BIT(NL80211_IFTYPE_MESH_POINT);
2062
2063 dev->channel_change_time = 1000; /* TODO: find actual value */
2064 priv->tx_stats[0].limit = 1; /* Beacon queue */
2065 priv->tx_stats[1].limit = 1; /* Probe queue for HW scan */
2066 priv->tx_stats[2].limit = 3; /* queue for MLMEs */
2067 priv->tx_stats[3].limit = 3; /* Broadcast / MC queue */
2068 priv->tx_stats[4].limit = 5; /* Data */
2069 dev->queues = 1;
2070 priv->noise = -94;
2071 /*
2072 * We support at most 8 tries no matter which rate they're at,
2073 * we cannot support max_rates * max_rate_tries as we set it
2074 * here, but setting it correctly to 4/2 or so would limit us
2075 * artificially if the RC algorithm wants just two rates, so
2076 * let's say 4/7, we'll redistribute it at TX time, see the
2077 * comments there.
2078 */
2079 dev->max_rates = 4;
2080 dev->max_rate_tries = 7;
2081 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2082 sizeof(struct p54_tx_data);
2083
2084 mutex_init(&priv->conf_mutex);
2085 init_completion(&priv->eeprom_comp);
2086 init_completion(&priv->stats_comp);
2087 setup_timer(&priv->stats_timer, p54_statistics_timer,
2088 (unsigned long)dev);
2089
2090 return dev;
2091 }
2092 EXPORT_SYMBOL_GPL(p54_init_common);
2093
2094 void p54_free_common(struct ieee80211_hw *dev)
2095 {
2096 struct p54_common *priv = dev->priv;
2097 del_timer(&priv->stats_timer);
2098 kfree_skb(priv->cached_stats);
2099 kfree(priv->iq_autocal);
2100 kfree(priv->output_limit);
2101 kfree(priv->curve_data);
2102 }
2103 EXPORT_SYMBOL_GPL(p54_free_common);
2104
2105 static int __init p54_init(void)
2106 {
2107 return 0;
2108 }
2109
2110 static void __exit p54_exit(void)
2111 {
2112 }
2113
2114 module_init(p54_init);
2115 module_exit(p54_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree