1 /*
2 * Firmware I/O code for mac80211 Prism54 drivers
3 *
4 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
5 * Copyright (c) 2007-2009, 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/slab.h>
20 #include <linux/firmware.h>
21 #include <linux/etherdevice.h>
22 #include <linux/export.h>
23
24 #include <net/mac80211.h>
25
26 #include "p54.h"
27 #include "eeprom.h"
28 #include "lmac.h"
29
p54_parse_firmware(struct ieee80211_hw * dev,const struct firmware * fw)30 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
31 {
32 struct p54_common *priv = dev->priv;
33 struct exp_if *exp_if;
34 struct bootrec *bootrec;
35 u32 *data = (u32 *)fw->data;
36 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
37 u8 *fw_version = NULL;
38 size_t len;
39 int i;
40 int maxlen;
41
42 if (priv->rx_start)
43 return 0;
44
45 while (data < end_data && *data)
46 data++;
47
48 while (data < end_data && !*data)
49 data++;
50
51 bootrec = (struct bootrec *) data;
52
53 while (bootrec->data <= end_data && (bootrec->data +
54 (len = le32_to_cpu(bootrec->len))) <= end_data) {
55 u32 code = le32_to_cpu(bootrec->code);
56 switch (code) {
57 case BR_CODE_COMPONENT_ID:
58 priv->fw_interface = be32_to_cpup((__be32 *)
59 bootrec->data);
60 switch (priv->fw_interface) {
61 case FW_LM86:
62 case FW_LM20:
63 case FW_LM87: {
64 char *iftype = (char *)bootrec->data;
65 wiphy_info(priv->hw->wiphy,
66 "p54 detected a LM%c%c firmware\n",
67 iftype[2], iftype[3]);
68 break;
69 }
70 case FW_FMAC:
71 default:
72 wiphy_err(priv->hw->wiphy,
73 "unsupported firmware\n");
74 return -ENODEV;
75 }
76 break;
77 case BR_CODE_COMPONENT_VERSION:
78 /* 24 bytes should be enough for all firmwares */
79 if (strnlen((unsigned char *) bootrec->data, 24) < 24)
80 fw_version = (unsigned char *) bootrec->data;
81 break;
82 case BR_CODE_DESCR: {
83 struct bootrec_desc *desc =
84 (struct bootrec_desc *)bootrec->data;
85 priv->rx_start = le32_to_cpu(desc->rx_start);
86 /* FIXME add sanity checking */
87 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
88 priv->headroom = desc->headroom;
89 priv->tailroom = desc->tailroom;
90 priv->privacy_caps = desc->privacy_caps;
91 priv->rx_keycache_size = desc->rx_keycache_size;
92 if (le32_to_cpu(bootrec->len) == 11)
93 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
94 else
95 priv->rx_mtu = (size_t)
96 0x620 - priv->tx_hdr_len;
97 maxlen = priv->tx_hdr_len + /* USB devices */
98 sizeof(struct p54_rx_data) +
99 4 + /* rx alignment */
100 IEEE80211_MAX_FRAG_THRESHOLD;
101 if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
102 printk(KERN_INFO "p54: rx_mtu reduced from %d "
103 "to %d\n", priv->rx_mtu, maxlen);
104 priv->rx_mtu = maxlen;
105 }
106 break;
107 }
108 case BR_CODE_EXPOSED_IF:
109 exp_if = (struct exp_if *) bootrec->data;
110 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
111 if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
112 priv->fw_var = le16_to_cpu(exp_if[i].variant);
113 break;
114 case BR_CODE_DEPENDENT_IF:
115 break;
116 case BR_CODE_END_OF_BRA:
117 case LEGACY_BR_CODE_END_OF_BRA:
118 end_data = NULL;
119 break;
120 default:
121 break;
122 }
123 bootrec = (struct bootrec *)&bootrec->data[len];
124 }
125
126 if (fw_version) {
127 wiphy_info(priv->hw->wiphy,
128 "FW rev %s - Softmac protocol %x.%x\n",
129 fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
130 snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
131 "%s - %x.%x", fw_version,
132 priv->fw_var >> 8, priv->fw_var & 0xff);
133 }
134
135 if (priv->fw_var < 0x500)
136 wiphy_info(priv->hw->wiphy,
137 "you are using an obsolete firmware. "
138 "visit http://wireless.kernel.org/en/users/Drivers/p54 "
139 "and grab one for \"kernel >= 2.6.28\"!\n");
140
141 if (priv->fw_var >= 0x300) {
142 /* Firmware supports QoS, use it! */
143
144 if (priv->fw_var >= 0x500) {
145 priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
146 priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
147 priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
148 priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
149 } else {
150 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
151 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
152 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
153 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
154 }
155 priv->hw->queues = P54_QUEUE_AC_NUM;
156 }
157
158 wiphy_info(priv->hw->wiphy,
159 "cryptographic accelerator WEP:%s, TKIP:%s, CCMP:%s\n",
160 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : "no",
161 (priv->privacy_caps &
162 (BR_DESC_PRIV_CAP_TKIP | BR_DESC_PRIV_CAP_MICHAEL))
163 ? "YES" : "no",
164 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)
165 ? "YES" : "no");
166
167 if (priv->rx_keycache_size) {
168 /*
169 * NOTE:
170 *
171 * The firmware provides at most 255 (0 - 254) slots
172 * for keys which are then used to offload decryption.
173 * As a result the 255 entry (aka 0xff) can be used
174 * safely by the driver to mark keys that didn't fit
175 * into the full cache. This trick saves us from
176 * keeping a extra list for uploaded keys.
177 */
178
179 priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
180 priv->rx_keycache_size), GFP_KERNEL);
181
182 if (!priv->used_rxkeys)
183 return -ENOMEM;
184 }
185
186 return 0;
187 }
188 EXPORT_SYMBOL_GPL(p54_parse_firmware);
189
p54_alloc_skb(struct p54_common * priv,u16 hdr_flags,u16 payload_len,u16 type,gfp_t memflags)190 static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
191 u16 payload_len, u16 type, gfp_t memflags)
192 {
193 struct p54_hdr *hdr;
194 struct sk_buff *skb;
195 size_t frame_len = sizeof(*hdr) + payload_len;
196
197 if (frame_len > P54_MAX_CTRL_FRAME_LEN)
198 return NULL;
199
200 if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
201 return NULL;
202
203 skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
204 if (!skb)
205 return NULL;
206 skb_reserve(skb, priv->tx_hdr_len);
207
208 hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
209 hdr->flags = cpu_to_le16(hdr_flags);
210 hdr->len = cpu_to_le16(payload_len);
211 hdr->type = cpu_to_le16(type);
212 hdr->tries = hdr->rts_tries = 0;
213 return skb;
214 }
215
p54_download_eeprom(struct p54_common * priv,void * buf,u16 offset,u16 len)216 int p54_download_eeprom(struct p54_common *priv, void *buf,
217 u16 offset, u16 len)
218 {
219 struct p54_eeprom_lm86 *eeprom_hdr;
220 struct sk_buff *skb;
221 size_t eeprom_hdr_size;
222 int ret = 0;
223
224 if (priv->fw_var >= 0x509)
225 eeprom_hdr_size = sizeof(*eeprom_hdr);
226 else
227 eeprom_hdr_size = 0x4;
228
229 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
230 len, P54_CONTROL_TYPE_EEPROM_READBACK,
231 GFP_KERNEL);
232 if (unlikely(!skb))
233 return -ENOMEM;
234
235 mutex_lock(&priv->eeprom_mutex);
236 priv->eeprom = buf;
237 eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
238 eeprom_hdr_size + len);
239
240 if (priv->fw_var < 0x509) {
241 eeprom_hdr->v1.offset = cpu_to_le16(offset);
242 eeprom_hdr->v1.len = cpu_to_le16(len);
243 } else {
244 eeprom_hdr->v2.offset = cpu_to_le32(offset);
245 eeprom_hdr->v2.len = cpu_to_le16(len);
246 eeprom_hdr->v2.magic2 = 0xf;
247 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
248 }
249
250 p54_tx(priv, skb);
251
252 if (!wait_for_completion_interruptible_timeout(
253 &priv->eeprom_comp, HZ)) {
254 wiphy_err(priv->hw->wiphy, "device does not respond!\n");
255 ret = -EBUSY;
256 }
257 priv->eeprom = NULL;
258 mutex_unlock(&priv->eeprom_mutex);
259 return ret;
260 }
261
p54_update_beacon_tim(struct p54_common * priv,u16 aid,bool set)262 int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
263 {
264 struct sk_buff *skb;
265 struct p54_tim *tim;
266
267 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
268 P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
269 if (unlikely(!skb))
270 return -ENOMEM;
271
272 tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
273 tim->count = 1;
274 tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
275 p54_tx(priv, skb);
276 return 0;
277 }
278
p54_sta_unlock(struct p54_common * priv,u8 * addr)279 int p54_sta_unlock(struct p54_common *priv, u8 *addr)
280 {
281 struct sk_buff *skb;
282 struct p54_sta_unlock *sta;
283
284 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
285 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
286 if (unlikely(!skb))
287 return -ENOMEM;
288
289 sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
290 memcpy(sta->addr, addr, ETH_ALEN);
291 p54_tx(priv, skb);
292 return 0;
293 }
294
p54_tx_cancel(struct p54_common * priv,__le32 req_id)295 int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
296 {
297 struct sk_buff *skb;
298 struct p54_txcancel *cancel;
299 u32 _req_id = le32_to_cpu(req_id);
300
301 if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
302 return -EINVAL;
303
304 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
305 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
306 if (unlikely(!skb))
307 return -ENOMEM;
308
309 cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
310 cancel->req_id = req_id;
311 p54_tx(priv, skb);
312 return 0;
313 }
314
p54_setup_mac(struct p54_common * priv)315 int p54_setup_mac(struct p54_common *priv)
316 {
317 struct sk_buff *skb;
318 struct p54_setup_mac *setup;
319 u16 mode;
320
321 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
322 P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
323 if (!skb)
324 return -ENOMEM;
325
326 setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
327 if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
328 switch (priv->mode) {
329 case NL80211_IFTYPE_STATION:
330 mode = P54_FILTER_TYPE_STATION;
331 break;
332 case NL80211_IFTYPE_AP:
333 mode = P54_FILTER_TYPE_AP;
334 break;
335 case NL80211_IFTYPE_ADHOC:
336 case NL80211_IFTYPE_MESH_POINT:
337 mode = P54_FILTER_TYPE_IBSS;
338 break;
339 case NL80211_IFTYPE_MONITOR:
340 mode = P54_FILTER_TYPE_PROMISCUOUS;
341 break;
342 default:
343 mode = P54_FILTER_TYPE_HIBERNATE;
344 break;
345 }
346
347 /*
348 * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
349 * STSW45X0C LMAC API - page 12
350 */
351 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
352 (priv->filter_flags & FIF_OTHER_BSS)) &&
353 (mode != P54_FILTER_TYPE_PROMISCUOUS))
354 mode |= P54_FILTER_TYPE_TRANSPARENT;
355 } else {
356 mode = P54_FILTER_TYPE_HIBERNATE;
357 }
358
359 setup->mac_mode = cpu_to_le16(mode);
360 memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
361 memcpy(setup->bssid, priv->bssid, ETH_ALEN);
362 setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
363 setup->rx_align = 0;
364 if (priv->fw_var < 0x500) {
365 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
366 memset(setup->v1.rts_rates, 0, 8);
367 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
368 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
369 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
370 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
371 setup->v1.unalloc0 = cpu_to_le16(0);
372 } else {
373 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
374 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
375 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
376 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
377 setup->v2.truncate = cpu_to_le16(48896);
378 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
379 setup->v2.sbss_offset = 0;
380 setup->v2.mcast_window = 0;
381 setup->v2.rx_rssi_threshold = 0;
382 setup->v2.rx_ed_threshold = 0;
383 setup->v2.ref_clock = cpu_to_le32(644245094);
384 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
385 setup->v2.osc_start_delay = cpu_to_le16(65535);
386 }
387 p54_tx(priv, skb);
388 priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
389 return 0;
390 }
391
p54_scan(struct p54_common * priv,u16 mode,u16 dwell)392 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
393 {
394 struct sk_buff *skb;
395 struct p54_hdr *hdr;
396 struct p54_scan_head *head;
397 struct p54_iq_autocal_entry *iq_autocal;
398 union p54_scan_body_union *body;
399 struct p54_scan_tail_rate *rate;
400 struct pda_rssi_cal_entry *rssi;
401 struct p54_rssi_db_entry *rssi_data;
402 unsigned int i;
403 void *entry;
404 __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
405
406 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
407 2 + sizeof(*iq_autocal) + sizeof(*body) +
408 sizeof(*rate) + 2 * sizeof(*rssi),
409 P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
410 if (!skb)
411 return -ENOMEM;
412
413 head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
414 memset(head->scan_params, 0, sizeof(head->scan_params));
415 head->mode = cpu_to_le16(mode);
416 head->dwell = cpu_to_le16(dwell);
417 head->freq = freq;
418
419 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
420 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
421 *pa_power_points = cpu_to_le16(0x0c);
422 }
423
424 iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
425 for (i = 0; i < priv->iq_autocal_len; i++) {
426 if (priv->iq_autocal[i].freq != freq)
427 continue;
428
429 memcpy(iq_autocal, &priv->iq_autocal[i].params,
430 sizeof(struct p54_iq_autocal_entry));
431 break;
432 }
433 if (i == priv->iq_autocal_len)
434 goto err;
435
436 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
437 body = (void *) skb_put(skb, sizeof(body->longbow));
438 else
439 body = (void *) skb_put(skb, sizeof(body->normal));
440
441 for (i = 0; i < priv->output_limit->entries; i++) {
442 __le16 *entry_freq = (void *) (priv->output_limit->data +
443 priv->output_limit->entry_size * i);
444
445 if (*entry_freq != freq)
446 continue;
447
448 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
449 memcpy(&body->longbow.power_limits,
450 (void *) entry_freq + sizeof(__le16),
451 priv->output_limit->entry_size);
452 } else {
453 struct pda_channel_output_limit *limits =
454 (void *) entry_freq;
455
456 body->normal.val_barker = 0x38;
457 body->normal.val_bpsk = body->normal.dup_bpsk =
458 limits->val_bpsk;
459 body->normal.val_qpsk = body->normal.dup_qpsk =
460 limits->val_qpsk;
461 body->normal.val_16qam = body->normal.dup_16qam =
462 limits->val_16qam;
463 body->normal.val_64qam = body->normal.dup_64qam =
464 limits->val_64qam;
465 }
466 break;
467 }
468 if (i == priv->output_limit->entries)
469 goto err;
470
471 entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
472 for (i = 0; i < priv->curve_data->entries; i++) {
473 if (*((__le16 *)entry) != freq) {
474 entry += priv->curve_data->entry_size;
475 continue;
476 }
477
478 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
479 memcpy(&body->longbow.curve_data,
480 entry + sizeof(__le16),
481 priv->curve_data->entry_size);
482 } else {
483 struct p54_scan_body *chan = &body->normal;
484 struct pda_pa_curve_data *curve_data =
485 (void *) priv->curve_data->data;
486
487 entry += sizeof(__le16);
488 chan->pa_points_per_curve = 8;
489 memset(chan->curve_data, 0, sizeof(chan->curve_data));
490 memcpy(chan->curve_data, entry,
491 sizeof(struct p54_pa_curve_data_sample) *
492 min((u8)8, curve_data->points_per_channel));
493 }
494 break;
495 }
496 if (i == priv->curve_data->entries)
497 goto err;
498
499 if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
500 rate = (void *) skb_put(skb, sizeof(*rate));
501 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
502 for (i = 0; i < sizeof(rate->rts_rates); i++)
503 rate->rts_rates[i] = i;
504 }
505
506 rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
507 rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
508 rssi->mul = cpu_to_le16(rssi_data->mul);
509 rssi->add = cpu_to_le16(rssi_data->add);
510 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
511 /* Longbow frontend needs ever more */
512 rssi = (void *) skb_put(skb, sizeof(*rssi));
513 rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
514 rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
515 }
516
517 if (priv->fw_var >= 0x509) {
518 rate = (void *) skb_put(skb, sizeof(*rate));
519 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
520 for (i = 0; i < sizeof(rate->rts_rates); i++)
521 rate->rts_rates[i] = i;
522 }
523
524 hdr = (struct p54_hdr *) skb->data;
525 hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
526
527 p54_tx(priv, skb);
528 priv->cur_rssi = rssi_data;
529 return 0;
530
531 err:
532 wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
533 ieee80211_frequency_to_channel(
534 priv->hw->conf.chandef.chan->center_freq));
535
536 dev_kfree_skb_any(skb);
537 return -EINVAL;
538 }
539
p54_set_leds(struct p54_common * priv)540 int p54_set_leds(struct p54_common *priv)
541 {
542 struct sk_buff *skb;
543 struct p54_led *led;
544
545 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
546 P54_CONTROL_TYPE_LED, GFP_ATOMIC);
547 if (unlikely(!skb))
548 return -ENOMEM;
549
550 led = (struct p54_led *) skb_put(skb, sizeof(*led));
551 led->flags = cpu_to_le16(0x0003);
552 led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
553 led->delay[0] = cpu_to_le16(1);
554 led->delay[1] = cpu_to_le16(0);
555 p54_tx(priv, skb);
556 return 0;
557 }
558
p54_set_edcf(struct p54_common * priv)559 int p54_set_edcf(struct p54_common *priv)
560 {
561 struct sk_buff *skb;
562 struct p54_edcf *edcf;
563 u8 rtd;
564
565 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
566 P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
567 if (unlikely(!skb))
568 return -ENOMEM;
569
570 edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
571 if (priv->use_short_slot) {
572 edcf->slottime = 9;
573 edcf->sifs = 0x10;
574 edcf->eofpad = 0x00;
575 } else {
576 edcf->slottime = 20;
577 edcf->sifs = 0x0a;
578 edcf->eofpad = 0x06;
579 }
580 /*
581 * calculate the extra round trip delay according to the
582 * formula from 802.11-2007 17.3.8.6.
583 */
584 rtd = 3 * priv->coverage_class;
585 edcf->slottime += rtd;
586 edcf->round_trip_delay = cpu_to_le16(rtd);
587 /* (see prism54/isl_oid.h for further details) */
588 edcf->frameburst = cpu_to_le16(0);
589 edcf->flags = 0;
590 memset(edcf->mapping, 0, sizeof(edcf->mapping));
591 memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
592 p54_tx(priv, skb);
593 return 0;
594 }
595
p54_set_ps(struct p54_common * priv)596 int p54_set_ps(struct p54_common *priv)
597 {
598 struct sk_buff *skb;
599 struct p54_psm *psm;
600 unsigned int i;
601 u16 mode;
602
603 if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
604 !priv->powersave_override)
605 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
606 P54_PSM_CHECKSUM | P54_PSM_MCBC;
607 else
608 mode = P54_PSM_CAM;
609
610 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
611 P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
612 if (!skb)
613 return -ENOMEM;
614
615 psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
616 psm->mode = cpu_to_le16(mode);
617 psm->aid = cpu_to_le16(priv->aid);
618 for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
619 psm->intervals[i].interval =
620 cpu_to_le16(priv->hw->conf.listen_interval);
621 psm->intervals[i].periods = cpu_to_le16(1);
622 }
623
624 psm->beacon_rssi_skip_max = 200;
625 psm->rssi_delta_threshold = 0;
626 psm->nr = 1;
627 psm->exclude[0] = WLAN_EID_TIM;
628
629 p54_tx(priv, skb);
630 priv->phy_ps = mode != P54_PSM_CAM;
631 return 0;
632 }
633
p54_init_xbow_synth(struct p54_common * priv)634 int p54_init_xbow_synth(struct p54_common *priv)
635 {
636 struct sk_buff *skb;
637 struct p54_xbow_synth *xbow;
638
639 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
640 P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
641 if (unlikely(!skb))
642 return -ENOMEM;
643
644 xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
645 xbow->magic1 = cpu_to_le16(0x1);
646 xbow->magic2 = cpu_to_le16(0x2);
647 xbow->freq = cpu_to_le16(5390);
648 memset(xbow->padding, 0, sizeof(xbow->padding));
649 p54_tx(priv, skb);
650 return 0;
651 }
652
p54_upload_key(struct p54_common * priv,u8 algo,int slot,u8 idx,u8 len,u8 * addr,u8 * key)653 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
654 u8 *addr, u8* key)
655 {
656 struct sk_buff *skb;
657 struct p54_keycache *rxkey;
658
659 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
660 P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
661 if (unlikely(!skb))
662 return -ENOMEM;
663
664 rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
665 rxkey->entry = slot;
666 rxkey->key_id = idx;
667 rxkey->key_type = algo;
668 if (addr)
669 memcpy(rxkey->mac, addr, ETH_ALEN);
670 else
671 memset(rxkey->mac, ~0, ETH_ALEN);
672
673 switch (algo) {
674 case P54_CRYPTO_WEP:
675 case P54_CRYPTO_AESCCMP:
676 rxkey->key_len = min_t(u8, 16, len);
677 memcpy(rxkey->key, key, rxkey->key_len);
678 break;
679
680 case P54_CRYPTO_TKIPMICHAEL:
681 rxkey->key_len = 24;
682 memcpy(rxkey->key, key, 16);
683 memcpy(&(rxkey->key[16]), &(key
684 [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
685 break;
686
687 case P54_CRYPTO_NONE:
688 rxkey->key_len = 0;
689 memset(rxkey->key, 0, sizeof(rxkey->key));
690 break;
691
692 default:
693 wiphy_err(priv->hw->wiphy,
694 "invalid cryptographic algorithm: %d\n", algo);
695 dev_kfree_skb(skb);
696 return -EINVAL;
697 }
698
699 p54_tx(priv, skb);
700 return 0;
701 }
702
p54_fetch_statistics(struct p54_common * priv)703 int p54_fetch_statistics(struct p54_common *priv)
704 {
705 struct ieee80211_tx_info *txinfo;
706 struct p54_tx_info *p54info;
707 struct sk_buff *skb;
708
709 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
710 sizeof(struct p54_statistics),
711 P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
712 if (!skb)
713 return -ENOMEM;
714
715 /*
716 * The statistic feedback causes some extra headaches here, if it
717 * is not to crash/corrupt the firmware data structures.
718 *
719 * Unlike all other Control Get OIDs we can not use helpers like
720 * skb_put to reserve the space for the data we're requesting.
721 * Instead the extra frame length -which will hold the results later-
722 * will only be told to the p54_assign_address, so that following
723 * frames won't be placed into the allegedly empty area.
724 */
725 txinfo = IEEE80211_SKB_CB(skb);
726 p54info = (void *) txinfo->rate_driver_data;
727 p54info->extra_len = sizeof(struct p54_statistics);
728
729 p54_tx(priv, skb);
730 return 0;
731 }
732
p54_set_groupfilter(struct p54_common * priv)733 int p54_set_groupfilter(struct p54_common *priv)
734 {
735 struct p54_group_address_table *grp;
736 struct sk_buff *skb;
737 bool on = false;
738
739 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
740 P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
741 if (!skb)
742 return -ENOMEM;
743
744 grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
745
746 on = !(priv->filter_flags & FIF_ALLMULTI) &&
747 (priv->mc_maclist_num > 0 &&
748 priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
749
750 if (on) {
751 grp->filter_enable = cpu_to_le16(1);
752 grp->num_address = cpu_to_le16(priv->mc_maclist_num);
753 memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
754 } else {
755 grp->filter_enable = cpu_to_le16(0);
756 grp->num_address = cpu_to_le16(0);
757 memset(grp->mac_list, 0, sizeof(grp->mac_list));
758 }
759
760 p54_tx(priv, skb);
761 return 0;
762 }
763