1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Firmware I/O code for mac80211 Prism54 drivers
4 *
5 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
6 * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
7 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
8 *
9 * Based on:
10 * - the islsm (softmac prism54) driver, which is:
11 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
12 * - stlc45xx driver
13 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
14 */
15
16 #include <linux/slab.h>
17 #include <linux/firmware.h>
18 #include <linux/etherdevice.h>
19 #include <linux/export.h>
20
21 #include <net/mac80211.h>
22
23 #include "p54.h"
24 #include "eeprom.h"
25 #include "lmac.h"
26
p54_parse_firmware(struct ieee80211_hw * dev,const struct firmware * fw)27 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
28 {
29 struct p54_common *priv = dev->priv;
30 struct exp_if *exp_if;
31 struct bootrec *bootrec;
32 u32 *data = (u32 *)fw->data;
33 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
34 u8 *fw_version = NULL;
35 size_t len;
36 int i;
37 int maxlen;
38
39 if (priv->rx_start)
40 return 0;
41
42 while (data < end_data && *data)
43 data++;
44
45 while (data < end_data && !*data)
46 data++;
47
48 bootrec = (struct bootrec *) data;
49
50 while (bootrec->data <= end_data && (bootrec->data +
51 (len = le32_to_cpu(bootrec->len))) <= end_data) {
52 u32 code = le32_to_cpu(bootrec->code);
53 switch (code) {
54 case BR_CODE_COMPONENT_ID:
55 priv->fw_interface = be32_to_cpup((__be32 *)
56 bootrec->data);
57 switch (priv->fw_interface) {
58 case FW_LM86:
59 case FW_LM20:
60 case FW_LM87: {
61 char *iftype = (char *)bootrec->data;
62 wiphy_info(priv->hw->wiphy,
63 "p54 detected a LM%c%c firmware\n",
64 iftype[2], iftype[3]);
65 break;
66 }
67 case FW_FMAC:
68 default:
69 wiphy_err(priv->hw->wiphy,
70 "unsupported firmware\n");
71 return -ENODEV;
72 }
73 break;
74 case BR_CODE_COMPONENT_VERSION:
75 /* 24 bytes should be enough for all firmwares */
76 if (strnlen((unsigned char *) bootrec->data, 24) < 24)
77 fw_version = (unsigned char *) bootrec->data;
78 break;
79 case BR_CODE_DESCR: {
80 struct bootrec_desc *desc =
81 (struct bootrec_desc *)bootrec->data;
82 priv->rx_start = le32_to_cpu(desc->rx_start);
83 /* FIXME add sanity checking */
84 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
85 priv->headroom = desc->headroom;
86 priv->tailroom = desc->tailroom;
87 priv->privacy_caps = desc->privacy_caps;
88 priv->rx_keycache_size = desc->rx_keycache_size;
89 if (le32_to_cpu(bootrec->len) == 11)
90 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
91 else
92 priv->rx_mtu = (size_t)
93 0x620 - priv->tx_hdr_len;
94 maxlen = priv->tx_hdr_len + /* USB devices */
95 sizeof(struct p54_rx_data) +
96 4 + /* rx alignment */
97 IEEE80211_MAX_FRAG_THRESHOLD;
98 if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
99 printk(KERN_INFO "p54: rx_mtu reduced from %d "
100 "to %d\n", priv->rx_mtu, maxlen);
101 priv->rx_mtu = maxlen;
102 }
103 break;
104 }
105 case BR_CODE_EXPOSED_IF:
106 exp_if = (struct exp_if *) bootrec->data;
107 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
108 if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
109 priv->fw_var = le16_to_cpu(exp_if[i].variant);
110 break;
111 case BR_CODE_DEPENDENT_IF:
112 break;
113 case BR_CODE_END_OF_BRA:
114 case LEGACY_BR_CODE_END_OF_BRA:
115 end_data = NULL;
116 break;
117 default:
118 break;
119 }
120 bootrec = (struct bootrec *)&bootrec->data[len];
121 }
122
123 if (fw_version) {
124 wiphy_info(priv->hw->wiphy,
125 "FW rev %s - Softmac protocol %x.%x\n",
126 fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
127 snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
128 "%s - %x.%x", fw_version,
129 priv->fw_var >> 8, priv->fw_var & 0xff);
130 }
131
132 if (priv->fw_var < 0x500)
133 wiphy_info(priv->hw->wiphy,
134 "you are using an obsolete firmware. "
135 "visit http://wireless.kernel.org/en/users/Drivers/p54 "
136 "and grab one for \"kernel >= 2.6.28\"!\n");
137
138 if (priv->fw_var >= 0x300) {
139 /* Firmware supports QoS, use it! */
140
141 if (priv->fw_var >= 0x500) {
142 priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
143 priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
144 priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
145 priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
146 } else {
147 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
148 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
149 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
150 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
151 }
152 priv->hw->queues = P54_QUEUE_AC_NUM;
153 }
154
155 wiphy_info(priv->hw->wiphy,
156 "cryptographic accelerator WEP:%s, TKIP:%s, CCMP:%s\n",
157 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : "no",
158 (priv->privacy_caps &
159 (BR_DESC_PRIV_CAP_TKIP | BR_DESC_PRIV_CAP_MICHAEL))
160 ? "YES" : "no",
161 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)
162 ? "YES" : "no");
163
164 if (priv->rx_keycache_size) {
165 /*
166 * NOTE:
167 *
168 * The firmware provides at most 255 (0 - 254) slots
169 * for keys which are then used to offload decryption.
170 * As a result the 255 entry (aka 0xff) can be used
171 * safely by the driver to mark keys that didn't fit
172 * into the full cache. This trick saves us from
173 * keeping a extra list for uploaded keys.
174 */
175
176 priv->used_rxkeys = kcalloc(BITS_TO_LONGS(priv->rx_keycache_size),
177 sizeof(long),
178 GFP_KERNEL);
179
180 if (!priv->used_rxkeys)
181 return -ENOMEM;
182 }
183
184 return 0;
185 }
186 EXPORT_SYMBOL_GPL(p54_parse_firmware);
187
p54_alloc_skb(struct p54_common * priv,u16 hdr_flags,u16 payload_len,u16 type,gfp_t memflags)188 static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
189 u16 payload_len, u16 type, gfp_t memflags)
190 {
191 struct p54_hdr *hdr;
192 struct sk_buff *skb;
193 size_t frame_len = sizeof(*hdr) + payload_len;
194
195 if (frame_len > P54_MAX_CTRL_FRAME_LEN)
196 return NULL;
197
198 if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
199 return NULL;
200
201 skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
202 if (!skb)
203 return NULL;
204 skb_reserve(skb, priv->tx_hdr_len);
205
206 hdr = skb_put(skb, sizeof(*hdr));
207 hdr->flags = cpu_to_le16(hdr_flags);
208 hdr->len = cpu_to_le16(payload_len);
209 hdr->type = cpu_to_le16(type);
210 hdr->tries = hdr->rts_tries = 0;
211 return skb;
212 }
213
p54_download_eeprom(struct p54_common * priv,void * buf,u16 offset,u16 len)214 int p54_download_eeprom(struct p54_common *priv, void *buf,
215 u16 offset, u16 len)
216 {
217 struct p54_eeprom_lm86 *eeprom_hdr;
218 struct sk_buff *skb;
219 size_t eeprom_hdr_size;
220 int ret = 0;
221 long timeout;
222
223 if (priv->fw_var >= 0x509)
224 eeprom_hdr_size = sizeof(*eeprom_hdr);
225 else
226 eeprom_hdr_size = 0x4;
227
228 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
229 len, P54_CONTROL_TYPE_EEPROM_READBACK,
230 GFP_KERNEL);
231 if (unlikely(!skb))
232 return -ENOMEM;
233
234 mutex_lock(&priv->eeprom_mutex);
235 priv->eeprom = buf;
236 eeprom_hdr = skb_put(skb, eeprom_hdr_size + len);
237
238 if (priv->fw_var < 0x509) {
239 eeprom_hdr->v1.offset = cpu_to_le16(offset);
240 eeprom_hdr->v1.len = cpu_to_le16(len);
241 } else {
242 eeprom_hdr->v2.offset = cpu_to_le32(offset);
243 eeprom_hdr->v2.len = cpu_to_le16(len);
244 eeprom_hdr->v2.magic2 = 0xf;
245 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
246 }
247
248 p54_tx(priv, skb);
249
250 timeout = wait_for_completion_interruptible_timeout(
251 &priv->eeprom_comp, HZ);
252 if (timeout <= 0) {
253 wiphy_err(priv->hw->wiphy,
254 "device does not respond or signal received!\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 = 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 = 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 = 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 = 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_OTHER_BSS &&
352 (mode != P54_FILTER_TYPE_PROMISCUOUS))
353 mode |= P54_FILTER_TYPE_TRANSPARENT;
354 } else {
355 mode = P54_FILTER_TYPE_HIBERNATE;
356 }
357
358 setup->mac_mode = cpu_to_le16(mode);
359 memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
360 memcpy(setup->bssid, priv->bssid, ETH_ALEN);
361 setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
362 setup->rx_align = 0;
363 if (priv->fw_var < 0x500) {
364 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
365 memset(setup->v1.rts_rates, 0, 8);
366 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
367 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
368 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
369 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
370 setup->v1.unalloc0 = cpu_to_le16(0);
371 } else {
372 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
373 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
374 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
375 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
376 setup->v2.truncate = cpu_to_le16(48896);
377 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
378 setup->v2.sbss_offset = 0;
379 setup->v2.mcast_window = 0;
380 setup->v2.rx_rssi_threshold = 0;
381 setup->v2.rx_ed_threshold = 0;
382 setup->v2.ref_clock = cpu_to_le32(644245094);
383 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
384 setup->v2.osc_start_delay = cpu_to_le16(65535);
385 }
386 p54_tx(priv, skb);
387 priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
388 return 0;
389 }
390
p54_scan(struct p54_common * priv,u16 mode,u16 dwell)391 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
392 {
393 struct sk_buff *skb;
394 struct p54_hdr *hdr;
395 struct p54_scan_head *head;
396 struct p54_iq_autocal_entry *iq_autocal;
397 union p54_scan_body_union *body;
398 struct p54_scan_tail_rate *rate;
399 struct pda_rssi_cal_entry *rssi;
400 struct p54_rssi_db_entry *rssi_data;
401 unsigned int i;
402 void *entry;
403 __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
404
405 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
406 2 + sizeof(*iq_autocal) + sizeof(*body) +
407 sizeof(*rate) + 2 * sizeof(*rssi),
408 P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
409 if (!skb)
410 return -ENOMEM;
411
412 head = skb_put(skb, sizeof(*head));
413 memset(head->scan_params, 0, sizeof(head->scan_params));
414 head->mode = cpu_to_le16(mode);
415 head->dwell = cpu_to_le16(dwell);
416 head->freq = freq;
417
418 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
419 __le16 *pa_power_points = skb_put(skb, 2);
420 *pa_power_points = cpu_to_le16(0x0c);
421 }
422
423 iq_autocal = skb_put(skb, sizeof(*iq_autocal));
424 for (i = 0; i < priv->iq_autocal_len; i++) {
425 if (priv->iq_autocal[i].freq != freq)
426 continue;
427
428 memcpy(iq_autocal, &priv->iq_autocal[i].params,
429 sizeof(struct p54_iq_autocal_entry));
430 break;
431 }
432 if (i == priv->iq_autocal_len)
433 goto err;
434
435 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
436 body = skb_put(skb, sizeof(body->longbow));
437 else
438 body = skb_put(skb, sizeof(body->normal));
439
440 for (i = 0; i < priv->output_limit->entries; i++) {
441 __le16 *entry_freq = (void *) (priv->output_limit->data +
442 priv->output_limit->entry_size * i);
443
444 if (*entry_freq != freq)
445 continue;
446
447 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
448 memcpy(&body->longbow.power_limits,
449 (void *) entry_freq + sizeof(__le16),
450 priv->output_limit->entry_size);
451 } else {
452 struct pda_channel_output_limit *limits =
453 (void *) entry_freq;
454
455 body->normal.val_barker = 0x38;
456 body->normal.val_bpsk = body->normal.dup_bpsk =
457 limits->val_bpsk;
458 body->normal.val_qpsk = body->normal.dup_qpsk =
459 limits->val_qpsk;
460 body->normal.val_16qam = body->normal.dup_16qam =
461 limits->val_16qam;
462 body->normal.val_64qam = body->normal.dup_64qam =
463 limits->val_64qam;
464 }
465 break;
466 }
467 if (i == priv->output_limit->entries)
468 goto err;
469
470 entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
471 for (i = 0; i < priv->curve_data->entries; i++) {
472 if (*((__le16 *)entry) != freq) {
473 entry += priv->curve_data->entry_size;
474 continue;
475 }
476
477 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
478 memcpy(&body->longbow.curve_data,
479 entry + sizeof(__le16),
480 priv->curve_data->entry_size);
481 } else {
482 struct p54_scan_body *chan = &body->normal;
483 struct pda_pa_curve_data *curve_data =
484 (void *) priv->curve_data->data;
485
486 entry += sizeof(__le16);
487 chan->pa_points_per_curve = 8;
488 memset(chan->curve_data, 0, sizeof(chan->curve_data));
489 memcpy(chan->curve_data, entry,
490 sizeof(struct p54_pa_curve_data_sample) *
491 min((u8)8, curve_data->points_per_channel));
492 }
493 break;
494 }
495 if (i == priv->curve_data->entries)
496 goto err;
497
498 if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
499 rate = skb_put(skb, sizeof(*rate));
500 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
501 for (i = 0; i < sizeof(rate->rts_rates); i++)
502 rate->rts_rates[i] = i;
503 }
504
505 rssi = skb_put(skb, sizeof(*rssi));
506 rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
507 rssi->mul = cpu_to_le16(rssi_data->mul);
508 rssi->add = cpu_to_le16(rssi_data->add);
509 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
510 /* Longbow frontend needs ever more */
511 rssi = skb_put(skb, sizeof(*rssi));
512 rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
513 rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
514 }
515
516 if (priv->fw_var >= 0x509) {
517 rate = skb_put(skb, sizeof(*rate));
518 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
519 for (i = 0; i < sizeof(rate->rts_rates); i++)
520 rate->rts_rates[i] = i;
521 }
522
523 hdr = (struct p54_hdr *) skb->data;
524 hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
525
526 p54_tx(priv, skb);
527 priv->cur_rssi = rssi_data;
528 return 0;
529
530 err:
531 wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
532 ieee80211_frequency_to_channel(
533 priv->hw->conf.chandef.chan->center_freq));
534
535 dev_kfree_skb_any(skb);
536 return -EINVAL;
537 }
538
p54_set_leds(struct p54_common * priv)539 int p54_set_leds(struct p54_common *priv)
540 {
541 struct sk_buff *skb;
542 struct p54_led *led;
543
544 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
545 P54_CONTROL_TYPE_LED, GFP_ATOMIC);
546 if (unlikely(!skb))
547 return -ENOMEM;
548
549 led = skb_put(skb, sizeof(*led));
550 led->flags = cpu_to_le16(0x0003);
551 led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
552 led->delay[0] = cpu_to_le16(1);
553 led->delay[1] = cpu_to_le16(0);
554 p54_tx(priv, skb);
555 return 0;
556 }
557
p54_set_edcf(struct p54_common * priv)558 int p54_set_edcf(struct p54_common *priv)
559 {
560 struct sk_buff *skb;
561 struct p54_edcf *edcf;
562 u8 rtd;
563
564 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
565 P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
566 if (unlikely(!skb))
567 return -ENOMEM;
568
569 edcf = skb_put(skb, sizeof(*edcf));
570 if (priv->use_short_slot) {
571 edcf->slottime = 9;
572 edcf->sifs = 0x10;
573 edcf->eofpad = 0x00;
574 } else {
575 edcf->slottime = 20;
576 edcf->sifs = 0x0a;
577 edcf->eofpad = 0x06;
578 }
579 /*
580 * calculate the extra round trip delay according to the
581 * formula from 802.11-2007 17.3.8.6.
582 */
583 rtd = 3 * priv->coverage_class;
584 edcf->slottime += rtd;
585 edcf->round_trip_delay = cpu_to_le16(rtd);
586 /* (see prism54/isl_oid.h for further details) */
587 edcf->frameburst = cpu_to_le16(0);
588 edcf->flags = 0;
589 memset(edcf->mapping, 0, sizeof(edcf->mapping));
590 memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
591 p54_tx(priv, skb);
592 return 0;
593 }
594
p54_set_ps(struct p54_common * priv)595 int p54_set_ps(struct p54_common *priv)
596 {
597 struct sk_buff *skb;
598 struct p54_psm *psm;
599 unsigned int i;
600 u16 mode;
601
602 if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
603 !priv->powersave_override)
604 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
605 P54_PSM_CHECKSUM | P54_PSM_MCBC;
606 else
607 mode = P54_PSM_CAM;
608
609 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
610 P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
611 if (!skb)
612 return -ENOMEM;
613
614 psm = skb_put(skb, sizeof(*psm));
615 psm->mode = cpu_to_le16(mode);
616 psm->aid = cpu_to_le16(priv->aid);
617 for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
618 psm->intervals[i].interval =
619 cpu_to_le16(priv->hw->conf.listen_interval);
620 psm->intervals[i].periods = cpu_to_le16(1);
621 }
622
623 psm->beacon_rssi_skip_max = 200;
624 psm->rssi_delta_threshold = 0;
625 psm->nr = 1;
626 psm->exclude[0] = WLAN_EID_TIM;
627
628 p54_tx(priv, skb);
629 priv->phy_ps = mode != P54_PSM_CAM;
630 return 0;
631 }
632
p54_init_xbow_synth(struct p54_common * priv)633 int p54_init_xbow_synth(struct p54_common *priv)
634 {
635 struct sk_buff *skb;
636 struct p54_xbow_synth *xbow;
637
638 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
639 P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
640 if (unlikely(!skb))
641 return -ENOMEM;
642
643 xbow = skb_put(skb, sizeof(*xbow));
644 xbow->magic1 = cpu_to_le16(0x1);
645 xbow->magic2 = cpu_to_le16(0x2);
646 xbow->freq = cpu_to_le16(5390);
647 memset(xbow->padding, 0, sizeof(xbow->padding));
648 p54_tx(priv, skb);
649 return 0;
650 }
651
p54_upload_key(struct p54_common * priv,u8 algo,int slot,u8 idx,u8 len,u8 * addr,u8 * key)652 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
653 u8 *addr, u8* key)
654 {
655 struct sk_buff *skb;
656 struct p54_keycache *rxkey;
657
658 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
659 P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
660 if (unlikely(!skb))
661 return -ENOMEM;
662
663 rxkey = skb_put(skb, sizeof(*rxkey));
664 rxkey->entry = slot;
665 rxkey->key_id = idx;
666 rxkey->key_type = algo;
667 if (addr)
668 memcpy(rxkey->mac, addr, ETH_ALEN);
669 else
670 eth_broadcast_addr(rxkey->mac);
671
672 switch (algo) {
673 case P54_CRYPTO_WEP:
674 case P54_CRYPTO_AESCCMP:
675 rxkey->key_len = min_t(u8, 16, len);
676 memcpy(rxkey->key, key, rxkey->key_len);
677 break;
678
679 case P54_CRYPTO_TKIPMICHAEL:
680 rxkey->key_len = 24;
681 memcpy(rxkey->key, key, 16);
682 memcpy(&(rxkey->key[16]), &(key
683 [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
684 break;
685
686 case P54_CRYPTO_NONE:
687 rxkey->key_len = 0;
688 memset(rxkey->key, 0, sizeof(rxkey->key));
689 break;
690
691 default:
692 wiphy_err(priv->hw->wiphy,
693 "invalid cryptographic algorithm: %d\n", algo);
694 dev_kfree_skb(skb);
695 return -EINVAL;
696 }
697
698 p54_tx(priv, skb);
699 return 0;
700 }
701
p54_fetch_statistics(struct p54_common * priv)702 int p54_fetch_statistics(struct p54_common *priv)
703 {
704 struct ieee80211_tx_info *txinfo;
705 struct p54_tx_info *p54info;
706 struct sk_buff *skb;
707
708 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
709 sizeof(struct p54_statistics),
710 P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
711 if (!skb)
712 return -ENOMEM;
713
714 /*
715 * The statistic feedback causes some extra headaches here, if it
716 * is not to crash/corrupt the firmware data structures.
717 *
718 * Unlike all other Control Get OIDs we can not use helpers like
719 * skb_put to reserve the space for the data we're requesting.
720 * Instead the extra frame length -which will hold the results later-
721 * will only be told to the p54_assign_address, so that following
722 * frames won't be placed into the allegedly empty area.
723 */
724 txinfo = IEEE80211_SKB_CB(skb);
725 p54info = (void *) txinfo->rate_driver_data;
726 p54info->extra_len = sizeof(struct p54_statistics);
727
728 p54_tx(priv, skb);
729 return 0;
730 }
731
p54_set_groupfilter(struct p54_common * priv)732 int p54_set_groupfilter(struct p54_common *priv)
733 {
734 struct p54_group_address_table *grp;
735 struct sk_buff *skb;
736 bool on = false;
737
738 skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
739 P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
740 if (!skb)
741 return -ENOMEM;
742
743 grp = skb_put(skb, sizeof(*grp));
744
745 on = !(priv->filter_flags & FIF_ALLMULTI) &&
746 (priv->mc_maclist_num > 0 &&
747 priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
748
749 if (on) {
750 grp->filter_enable = cpu_to_le16(1);
751 grp->num_address = cpu_to_le16(priv->mc_maclist_num);
752 memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
753 } else {
754 grp->filter_enable = cpu_to_le16(0);
755 grp->num_address = cpu_to_le16(0);
756 memset(grp->mac_list, 0, sizeof(grp->mac_list));
757 }
758
759 p54_tx(priv, skb);
760 return 0;
761 }
762
