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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / net / wireless / b43legacy / xmit.c
blobd84408a82db9ef6aa50857a3ad2fa4b4e4da2439
1 /*
2
3 Broadcom B43legacy wireless driver
4
5 Transmission (TX/RX) related functions.
6
7 Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
8 Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
9 Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de>
10 Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
11 Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
12 Copyright (C) 2007 Larry Finger <Larry.Finger@lwfinger.net>
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 as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; see the file COPYING. If not, write to
26 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
27 Boston, MA 02110-1301, USA.
28
29 */
30
31 #include <net/dst.h>
32
33 #include "xmit.h"
34 #include "phy.h"
35 #include "dma.h"
36 #include "pio.h"
37
38
39 /* Extract the bitrate out of a CCK PLCP header. */
40 static u8 b43legacy_plcp_get_bitrate_cck(struct b43legacy_plcp_hdr6 *plcp)
41 {
42 switch (plcp->raw[0]) {
43 case 0x0A:
44 return B43legacy_CCK_RATE_1MB;
45 case 0x14:
46 return B43legacy_CCK_RATE_2MB;
47 case 0x37:
48 return B43legacy_CCK_RATE_5MB;
49 case 0x6E:
50 return B43legacy_CCK_RATE_11MB;
51 }
52 B43legacy_BUG_ON(1);
53 return 0;
54 }
55
56 /* Extract the bitrate out of an OFDM PLCP header. */
57 static u8 b43legacy_plcp_get_bitrate_ofdm(struct b43legacy_plcp_hdr6 *plcp)
58 {
59 switch (plcp->raw[0] & 0xF) {
60 case 0xB:
61 return B43legacy_OFDM_RATE_6MB;
62 case 0xF:
63 return B43legacy_OFDM_RATE_9MB;
64 case 0xA:
65 return B43legacy_OFDM_RATE_12MB;
66 case 0xE:
67 return B43legacy_OFDM_RATE_18MB;
68 case 0x9:
69 return B43legacy_OFDM_RATE_24MB;
70 case 0xD:
71 return B43legacy_OFDM_RATE_36MB;
72 case 0x8:
73 return B43legacy_OFDM_RATE_48MB;
74 case 0xC:
75 return B43legacy_OFDM_RATE_54MB;
76 }
77 B43legacy_BUG_ON(1);
78 return 0;
79 }
80
81 u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate)
82 {
83 switch (bitrate) {
84 case B43legacy_CCK_RATE_1MB:
85 return 0x0A;
86 case B43legacy_CCK_RATE_2MB:
87 return 0x14;
88 case B43legacy_CCK_RATE_5MB:
89 return 0x37;
90 case B43legacy_CCK_RATE_11MB:
91 return 0x6E;
92 }
93 B43legacy_BUG_ON(1);
94 return 0;
95 }
96
97 u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate)
98 {
99 switch (bitrate) {
100 case B43legacy_OFDM_RATE_6MB:
101 return 0xB;
102 case B43legacy_OFDM_RATE_9MB:
103 return 0xF;
104 case B43legacy_OFDM_RATE_12MB:
105 return 0xA;
106 case B43legacy_OFDM_RATE_18MB:
107 return 0xE;
108 case B43legacy_OFDM_RATE_24MB:
109 return 0x9;
110 case B43legacy_OFDM_RATE_36MB:
111 return 0xD;
112 case B43legacy_OFDM_RATE_48MB:
113 return 0x8;
114 case B43legacy_OFDM_RATE_54MB:
115 return 0xC;
116 }
117 B43legacy_BUG_ON(1);
118 return 0;
119 }
120
121 void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp,
122 const u16 octets, const u8 bitrate)
123 {
124 __le32 *data = &(plcp->data);
125 __u8 *raw = plcp->raw;
126
127 if (b43legacy_is_ofdm_rate(bitrate)) {
128 u16 d;
129
130 d = b43legacy_plcp_get_ratecode_ofdm(bitrate);
131 B43legacy_WARN_ON(octets & 0xF000);
132 d |= (octets << 5);
133 *data = cpu_to_le32(d);
134 } else {
135 u32 plen;
136
137 plen = octets * 16 / bitrate;
138 if ((octets * 16 % bitrate) > 0) {
139 plen++;
140 if ((bitrate == B43legacy_CCK_RATE_11MB)
141 && ((octets * 8 % 11) < 4))
142 raw[1] = 0x84;
143 else
144 raw[1] = 0x04;
145 } else
146 raw[1] = 0x04;
147 *data |= cpu_to_le32(plen << 16);
148 raw[0] = b43legacy_plcp_get_ratecode_cck(bitrate);
149 }
150 }
151
152 static u8 b43legacy_calc_fallback_rate(u8 bitrate)
153 {
154 switch (bitrate) {
155 case B43legacy_CCK_RATE_1MB:
156 return B43legacy_CCK_RATE_1MB;
157 case B43legacy_CCK_RATE_2MB:
158 return B43legacy_CCK_RATE_1MB;
159 case B43legacy_CCK_RATE_5MB:
160 return B43legacy_CCK_RATE_2MB;
161 case B43legacy_CCK_RATE_11MB:
162 return B43legacy_CCK_RATE_5MB;
163 case B43legacy_OFDM_RATE_6MB:
164 return B43legacy_CCK_RATE_5MB;
165 case B43legacy_OFDM_RATE_9MB:
166 return B43legacy_OFDM_RATE_6MB;
167 case B43legacy_OFDM_RATE_12MB:
168 return B43legacy_OFDM_RATE_9MB;
169 case B43legacy_OFDM_RATE_18MB:
170 return B43legacy_OFDM_RATE_12MB;
171 case B43legacy_OFDM_RATE_24MB:
172 return B43legacy_OFDM_RATE_18MB;
173 case B43legacy_OFDM_RATE_36MB:
174 return B43legacy_OFDM_RATE_24MB;
175 case B43legacy_OFDM_RATE_48MB:
176 return B43legacy_OFDM_RATE_36MB;
177 case B43legacy_OFDM_RATE_54MB:
178 return B43legacy_OFDM_RATE_48MB;
179 }
180 B43legacy_BUG_ON(1);
181 return 0;
182 }
183
184 static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
185 struct b43legacy_txhdr_fw3 *txhdr,
186 const unsigned char *fragment_data,
187 unsigned int fragment_len,
188 const struct ieee80211_tx_control *txctl,
189 u16 cookie)
190 {
191 const struct ieee80211_hdr *wlhdr;
192 int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
193 u16 fctl;
194 u8 rate;
195 u8 rate_fb;
196 int rate_ofdm;
197 int rate_fb_ofdm;
198 unsigned int plcp_fragment_len;
199 u32 mac_ctl = 0;
200 u16 phy_ctl = 0;
201
202 wlhdr = (const struct ieee80211_hdr *)fragment_data;
203 fctl = le16_to_cpu(wlhdr->frame_control);
204
205 memset(txhdr, 0, sizeof(*txhdr));
206
207 rate = txctl->tx_rate;
208 rate_ofdm = b43legacy_is_ofdm_rate(rate);
209 rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
210 rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb);
211
212 txhdr->mac_frame_ctl = wlhdr->frame_control;
213 memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
214
215 /* Calculate duration for fallback rate */
216 if ((rate_fb == rate) ||
217 (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
218 (wlhdr->duration_id == cpu_to_le16(0))) {
219 /* If the fallback rate equals the normal rate or the
220 * dur_id field contains an AID, CFP magic or 0,
221 * use the original dur_id field. */
222 txhdr->dur_fb = wlhdr->duration_id;
223 } else {
224 int fbrate_base100kbps = B43legacy_RATE_TO_100KBPS(rate_fb);
225 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
226 txctl->vif,
227 fragment_len,
228 fbrate_base100kbps);
229 }
230
231 plcp_fragment_len = fragment_len + FCS_LEN;
232 if (use_encryption) {
233 u8 key_idx = (u16)(txctl->key_idx);
234 struct b43legacy_key *key;
235 int wlhdr_len;
236 size_t iv_len;
237
238 B43legacy_WARN_ON(key_idx >= dev->max_nr_keys);
239 key = &(dev->key[key_idx]);
240
241 if (key->enabled) {
242 /* Hardware appends ICV. */
243 plcp_fragment_len += txctl->icv_len;
244
245 key_idx = b43legacy_kidx_to_fw(dev, key_idx);
246 mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) &
247 B43legacy_TX4_MAC_KEYIDX;
248 mac_ctl |= (key->algorithm <<
249 B43legacy_TX4_MAC_KEYALG_SHIFT) &
250 B43legacy_TX4_MAC_KEYALG;
251 wlhdr_len = ieee80211_get_hdrlen(fctl);
252 iv_len = min((size_t)txctl->iv_len,
253 ARRAY_SIZE(txhdr->iv));
254 memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len);
255 } else {
256 /* This key is invalid. This might only happen
257 * in a short timeframe after machine resume before
258 * we were able to reconfigure keys.
259 * Drop this packet completely. Do not transmit it
260 * unencrypted to avoid leaking information. */
261 return -ENOKEY;
262 }
263 }
264 b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
265 (&txhdr->plcp), plcp_fragment_len,
266 rate);
267 b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
268 (&txhdr->plcp_fb), plcp_fragment_len,
269 rate_fb);
270
271 /* PHY TX Control word */
272 if (rate_ofdm)
273 phy_ctl |= B43legacy_TX4_PHY_OFDM;
274 if (dev->short_preamble)
275 phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL;
276 switch (txctl->antenna_sel_tx) {
277 case 0:
278 phy_ctl |= B43legacy_TX4_PHY_ANTLAST;
279 break;
280 case 1:
281 phy_ctl |= B43legacy_TX4_PHY_ANT0;
282 break;
283 case 2:
284 phy_ctl |= B43legacy_TX4_PHY_ANT1;
285 break;
286 default:
287 B43legacy_BUG_ON(1);
288 }
289
290 /* MAC control */
291 if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
292 mac_ctl |= B43legacy_TX4_MAC_ACK;
293 if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
294 ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
295 mac_ctl |= B43legacy_TX4_MAC_HWSEQ;
296 if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
297 mac_ctl |= B43legacy_TX4_MAC_STMSDU;
298 if (rate_fb_ofdm)
299 mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM;
300 if (txctl->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
301 mac_ctl |= B43legacy_TX4_MAC_LONGFRAME;
302
303 /* Generate the RTS or CTS-to-self frame */
304 if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
305 (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
306 unsigned int len;
307 struct ieee80211_hdr *hdr;
308 int rts_rate;
309 int rts_rate_fb;
310 int rts_rate_ofdm;
311 int rts_rate_fb_ofdm;
312
313 rts_rate = txctl->rts_cts_rate;
314 rts_rate_ofdm = b43legacy_is_ofdm_rate(rts_rate);
315 rts_rate_fb = b43legacy_calc_fallback_rate(rts_rate);
316 rts_rate_fb_ofdm = b43legacy_is_ofdm_rate(rts_rate_fb);
317 if (rts_rate_fb_ofdm)
318 mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM;
319
320 if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
321 ieee80211_ctstoself_get(dev->wl->hw,
322 txctl->vif,
323 fragment_data,
324 fragment_len, txctl,
325 (struct ieee80211_cts *)
326 (txhdr->rts_frame));
327 mac_ctl |= B43legacy_TX4_MAC_SENDCTS;
328 len = sizeof(struct ieee80211_cts);
329 } else {
330 ieee80211_rts_get(dev->wl->hw,
331 txctl->vif,
332 fragment_data, fragment_len, txctl,
333 (struct ieee80211_rts *)
334 (txhdr->rts_frame));
335 mac_ctl |= B43legacy_TX4_MAC_SENDRTS;
336 len = sizeof(struct ieee80211_rts);
337 }
338 len += FCS_LEN;
339 b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
340 (&txhdr->rts_plcp),
341 len, rts_rate);
342 b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
343 (&txhdr->rts_plcp_fb),
344 len, rts_rate_fb);
345 hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
346 txhdr->rts_dur_fb = hdr->duration_id;
347 }
348
349 /* Magic cookie */
350 txhdr->cookie = cpu_to_le16(cookie);
351
352 /* Apply the bitfields */
353 txhdr->mac_ctl = cpu_to_le32(mac_ctl);
354 txhdr->phy_ctl = cpu_to_le16(phy_ctl);
355
356 return 0;
357 }
358
359 int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
360 u8 *txhdr,
361 const unsigned char *fragment_data,
362 unsigned int fragment_len,
363 const struct ieee80211_tx_control *txctl,
364 u16 cookie)
365 {
366 return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr,
367 fragment_data, fragment_len,
368 txctl, cookie);
369 }
370
371 static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev,
372 u8 in_rssi, int ofdm,
373 int adjust_2053, int adjust_2050)
374 {
375 struct b43legacy_phy *phy = &dev->phy;
376 s32 tmp;
377
378 switch (phy->radio_ver) {
379 case 0x2050:
380 if (ofdm) {
381 tmp = in_rssi;
382 if (tmp > 127)
383 tmp -= 256;
384 tmp *= 73;
385 tmp /= 64;
386 if (adjust_2050)
387 tmp += 25;
388 else
389 tmp -= 3;
390 } else {
391 if (dev->dev->bus->sprom.boardflags_lo
392 & B43legacy_BFL_RSSI) {
393 if (in_rssi > 63)
394 in_rssi = 63;
395 tmp = phy->nrssi_lt[in_rssi];
396 tmp = 31 - tmp;
397 tmp *= -131;
398 tmp /= 128;
399 tmp -= 57;
400 } else {
401 tmp = in_rssi;
402 tmp = 31 - tmp;
403 tmp *= -149;
404 tmp /= 128;
405 tmp -= 68;
406 }
407 if (phy->type == B43legacy_PHYTYPE_G &&
408 adjust_2050)
409 tmp += 25;
410 }
411 break;
412 case 0x2060:
413 if (in_rssi > 127)
414 tmp = in_rssi - 256;
415 else
416 tmp = in_rssi;
417 break;
418 default:
419 tmp = in_rssi;
420 tmp -= 11;
421 tmp *= 103;
422 tmp /= 64;
423 if (adjust_2053)
424 tmp -= 109;
425 else
426 tmp -= 83;
427 }
428
429 return (s8)tmp;
430 }
431
432 void b43legacy_rx(struct b43legacy_wldev *dev,
433 struct sk_buff *skb,
434 const void *_rxhdr)
435 {
436 struct ieee80211_rx_status status;
437 struct b43legacy_plcp_hdr6 *plcp;
438 struct ieee80211_hdr *wlhdr;
439 const struct b43legacy_rxhdr_fw3 *rxhdr = _rxhdr;
440 u16 fctl;
441 u16 phystat0;
442 u16 phystat3;
443 u16 chanstat;
444 u16 mactime;
445 u32 macstat;
446 u16 chanid;
447 u8 jssi;
448 int padding;
449
450 memset(&status, 0, sizeof(status));
451
452 /* Get metadata about the frame from the header. */
453 phystat0 = le16_to_cpu(rxhdr->phy_status0);
454 phystat3 = le16_to_cpu(rxhdr->phy_status3);
455 jssi = rxhdr->jssi;
456 macstat = le16_to_cpu(rxhdr->mac_status);
457 mactime = le16_to_cpu(rxhdr->mac_time);
458 chanstat = le16_to_cpu(rxhdr->channel);
459
460 if (macstat & B43legacy_RX_MAC_FCSERR)
461 dev->wl->ieee_stats.dot11FCSErrorCount++;
462
463 /* Skip PLCP and padding */
464 padding = (macstat & B43legacy_RX_MAC_PADDING) ? 2 : 0;
465 if (unlikely(skb->len < (sizeof(struct b43legacy_plcp_hdr6) +
466 padding))) {
467 b43legacydbg(dev->wl, "RX: Packet size underrun (1)\n");
468 goto drop;
469 }
470 plcp = (struct b43legacy_plcp_hdr6 *)(skb->data + padding);
471 skb_pull(skb, sizeof(struct b43legacy_plcp_hdr6) + padding);
472 /* The skb contains the Wireless Header + payload data now */
473 if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) {
474 b43legacydbg(dev->wl, "RX: Packet size underrun (2)\n");
475 goto drop;
476 }
477 wlhdr = (struct ieee80211_hdr *)(skb->data);
478 fctl = le16_to_cpu(wlhdr->frame_control);
479
480 if ((macstat & B43legacy_RX_MAC_DEC) &&
481 !(macstat & B43legacy_RX_MAC_DECERR)) {
482 unsigned int keyidx;
483 int wlhdr_len;
484 int iv_len;
485 int icv_len;
486
487 keyidx = ((macstat & B43legacy_RX_MAC_KEYIDX)
488 >> B43legacy_RX_MAC_KEYIDX_SHIFT);
489 /* We must adjust the key index here. We want the "physical"
490 * key index, but the ucode passed it slightly different.
491 */
492 keyidx = b43legacy_kidx_to_raw(dev, keyidx);
493 B43legacy_WARN_ON(keyidx >= dev->max_nr_keys);
494
495 if (dev->key[keyidx].algorithm != B43legacy_SEC_ALGO_NONE) {
496 /* Remove PROTECTED flag to mark it as decrypted. */
497 B43legacy_WARN_ON(!(fctl & IEEE80211_FCTL_PROTECTED));
498 fctl &= ~IEEE80211_FCTL_PROTECTED;
499 wlhdr->frame_control = cpu_to_le16(fctl);
500
501 wlhdr_len = ieee80211_get_hdrlen(fctl);
502 if (unlikely(skb->len < (wlhdr_len + 3))) {
503 b43legacydbg(dev->wl, "RX: Packet size"
504 " underrun3\n");
505 goto drop;
506 }
507 if (skb->data[wlhdr_len + 3] & (1 << 5)) {
508 /* The Ext-IV Bit is set in the "KeyID"
509 * octet of the IV.
510 */
511 iv_len = 8;
512 icv_len = 8;
513 } else {
514 iv_len = 4;
515 icv_len = 4;
516 }
517 if (unlikely(skb->len < (wlhdr_len + iv_len +
518 icv_len))) {
519 b43legacydbg(dev->wl, "RX: Packet size"
520 " underrun4\n");
521 goto drop;
522 }
523 /* Remove the IV */
524 memmove(skb->data + iv_len, skb->data, wlhdr_len);
525 skb_pull(skb, iv_len);
526 /* Remove the ICV */
527 skb_trim(skb, skb->len - icv_len);
528
529 status.flag |= RX_FLAG_DECRYPTED;
530 }
531 }
532
533 status.ssi = b43legacy_rssi_postprocess(dev, jssi,
534 (phystat0 & B43legacy_RX_PHYST0_OFDM),
535 (phystat0 & B43legacy_RX_PHYST0_GAINCTL),
536 (phystat3 & B43legacy_RX_PHYST3_TRSTATE));
537 status.noise = dev->stats.link_noise;
538 status.signal = (jssi * 100) / B43legacy_RX_MAX_SSI;
539 if (phystat0 & B43legacy_RX_PHYST0_OFDM)
540 status.rate = b43legacy_plcp_get_bitrate_ofdm(plcp);
541 else
542 status.rate = b43legacy_plcp_get_bitrate_cck(plcp);
543 status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT);
544
545 /*
546 * If monitors are present get full 64-bit timestamp. This
547 * code assumes we get to process the packet within 16 bits
548 * of timestamp, i.e. about 65 milliseconds after the PHY
549 * received the first symbol.
550 */
551 if (dev->wl->radiotap_enabled) {
552 u16 low_mactime_now;
553
554 b43legacy_tsf_read(dev, &status.mactime);
555 low_mactime_now = status.mactime;
556 status.mactime = status.mactime & ~0xFFFFULL;
557 status.mactime += mactime;
558 if (low_mactime_now <= mactime)
559 status.mactime -= 0x10000;
560 status.flag |= RX_FLAG_TSFT;
561 }
562
563 chanid = (chanstat & B43legacy_RX_CHAN_ID) >>
564 B43legacy_RX_CHAN_ID_SHIFT;
565 switch (chanstat & B43legacy_RX_CHAN_PHYTYPE) {
566 case B43legacy_PHYTYPE_B:
567 status.phymode = MODE_IEEE80211B;
568 status.freq = chanid + 2400;
569 status.channel = b43legacy_freq_to_channel_bg(chanid + 2400);
570 break;
571 case B43legacy_PHYTYPE_G:
572 status.phymode = MODE_IEEE80211G;
573 status.freq = chanid + 2400;
574 status.channel = b43legacy_freq_to_channel_bg(chanid + 2400);
575 break;
576 default:
577 b43legacywarn(dev->wl, "Unexpected value for chanstat (0x%X)\n",
578 chanstat);
579 }
580
581 dev->stats.last_rx = jiffies;
582 ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
583
584 return;
585 drop:
586 b43legacydbg(dev->wl, "RX: Packet dropped\n");
587 dev_kfree_skb_any(skb);
588 }
589
590 void b43legacy_handle_txstatus(struct b43legacy_wldev *dev,
591 const struct b43legacy_txstatus *status)
592 {
593 b43legacy_debugfs_log_txstat(dev, status);
594
595 if (status->intermediate)
596 return;
597 if (status->for_ampdu)
598 return;
599 if (!status->acked)
600 dev->wl->ieee_stats.dot11ACKFailureCount++;
601 if (status->rts_count) {
602 if (status->rts_count == 0xF) /* FIXME */
603 dev->wl->ieee_stats.dot11RTSFailureCount++;
604 else
605 dev->wl->ieee_stats.dot11RTSSuccessCount++;
606 }
607
608 if (b43legacy_using_pio(dev))
609 b43legacy_pio_handle_txstatus(dev, status);
610 else
611 b43legacy_dma_handle_txstatus(dev, status);
612 }
613
614 /* Handle TX status report as received through DMA/PIO queues */
615 void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev,
616 const struct b43legacy_hwtxstatus *hw)
617 {
618 struct b43legacy_txstatus status;
619 u8 tmp;
620
621 status.cookie = le16_to_cpu(hw->cookie);
622 status.seq = le16_to_cpu(hw->seq);
623 status.phy_stat = hw->phy_stat;
624 tmp = hw->count;
625 status.frame_count = (tmp >> 4);
626 status.rts_count = (tmp & 0x0F);
627 tmp = hw->flags;
628 status.supp_reason = ((tmp & 0x1C) >> 2);
629 status.pm_indicated = !!(tmp & 0x80);
630 status.intermediate = !!(tmp & 0x40);
631 status.for_ampdu = !!(tmp & 0x20);
632 status.acked = !!(tmp & 0x02);
633
634 b43legacy_handle_txstatus(dev, &status);
635 }
636
637 /* Stop any TX operation on the device (suspend the hardware queues) */
638 void b43legacy_tx_suspend(struct b43legacy_wldev *dev)
639 {
640 if (b43legacy_using_pio(dev))
641 b43legacy_pio_freeze_txqueues(dev);
642 else
643 b43legacy_dma_tx_suspend(dev);
644 }
645
646 /* Resume any TX operation on the device (resume the hardware queues) */
647 void b43legacy_tx_resume(struct b43legacy_wldev *dev)
648 {
649 if (b43legacy_using_pio(dev))
650 b43legacy_pio_thaw_txqueues(dev);
651 else
652 b43legacy_dma_tx_resume(dev);
653 }
654
655 /* Initialize the QoS parameters */
656 void b43legacy_qos_init(struct b43legacy_wldev *dev)
657 {
658 /* FIXME: This function must probably be called from the mac80211
659 * config callback. */
660 return;
661
662 b43legacy_hf_write(dev, b43legacy_hf_read(dev) | B43legacy_HF_EDCF);
663 /* FIXME kill magic */
664 b43legacy_write16(dev, 0x688,
665 b43legacy_read16(dev, 0x688) | 0x4);
666
667
668 /*TODO: We might need some stack support here to get the values. */
669 }
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