Pull bugzilla-9535 into release branch
[linux-2.6] / drivers / net / wireless / b43 / xmit.c
1 /*
2
3   Broadcom B43 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 <st3@riseup.net>
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
13   This program is free software; you can redistribute it and/or modify
14   it under the terms of the GNU General Public License as published by
15   the Free Software Foundation; either version 2 of the License, or
16   (at your option) any later version.
17
18   This program is distributed in the hope that it will be useful,
19   but WITHOUT ANY WARRANTY; without even the implied warranty of
20   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21   GNU General Public License for more details.
22
23   You should have received a copy of the GNU General Public License
24   along with this program; see the file COPYING.  If not, write to
25   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
26   Boston, MA 02110-1301, USA.
27
28 */
29
30 #include "xmit.h"
31 #include "phy.h"
32 #include "dma.h"
33 #include "pio.h"
34
35 /* Extract the bitrate out of a CCK PLCP header. */
36 static u8 b43_plcp_get_bitrate_cck(struct b43_plcp_hdr6 *plcp)
37 {
38         switch (plcp->raw[0]) {
39         case 0x0A:
40                 return B43_CCK_RATE_1MB;
41         case 0x14:
42                 return B43_CCK_RATE_2MB;
43         case 0x37:
44                 return B43_CCK_RATE_5MB;
45         case 0x6E:
46                 return B43_CCK_RATE_11MB;
47         }
48         B43_WARN_ON(1);
49         return 0;
50 }
51
52 /* Extract the bitrate out of an OFDM PLCP header. */
53 static u8 b43_plcp_get_bitrate_ofdm(struct b43_plcp_hdr6 *plcp)
54 {
55         switch (plcp->raw[0] & 0xF) {
56         case 0xB:
57                 return B43_OFDM_RATE_6MB;
58         case 0xF:
59                 return B43_OFDM_RATE_9MB;
60         case 0xA:
61                 return B43_OFDM_RATE_12MB;
62         case 0xE:
63                 return B43_OFDM_RATE_18MB;
64         case 0x9:
65                 return B43_OFDM_RATE_24MB;
66         case 0xD:
67                 return B43_OFDM_RATE_36MB;
68         case 0x8:
69                 return B43_OFDM_RATE_48MB;
70         case 0xC:
71                 return B43_OFDM_RATE_54MB;
72         }
73         B43_WARN_ON(1);
74         return 0;
75 }
76
77 u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
78 {
79         switch (bitrate) {
80         case B43_CCK_RATE_1MB:
81                 return 0x0A;
82         case B43_CCK_RATE_2MB:
83                 return 0x14;
84         case B43_CCK_RATE_5MB:
85                 return 0x37;
86         case B43_CCK_RATE_11MB:
87                 return 0x6E;
88         }
89         B43_WARN_ON(1);
90         return 0;
91 }
92
93 u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
94 {
95         switch (bitrate) {
96         case B43_OFDM_RATE_6MB:
97                 return 0xB;
98         case B43_OFDM_RATE_9MB:
99                 return 0xF;
100         case B43_OFDM_RATE_12MB:
101                 return 0xA;
102         case B43_OFDM_RATE_18MB:
103                 return 0xE;
104         case B43_OFDM_RATE_24MB:
105                 return 0x9;
106         case B43_OFDM_RATE_36MB:
107                 return 0xD;
108         case B43_OFDM_RATE_48MB:
109                 return 0x8;
110         case B43_OFDM_RATE_54MB:
111                 return 0xC;
112         }
113         B43_WARN_ON(1);
114         return 0;
115 }
116
117 void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
118                            const u16 octets, const u8 bitrate)
119 {
120         __le32 *data = &(plcp->data);
121         __u8 *raw = plcp->raw;
122
123         if (b43_is_ofdm_rate(bitrate)) {
124                 u32 d;
125
126                 d = b43_plcp_get_ratecode_ofdm(bitrate);
127                 B43_WARN_ON(octets & 0xF000);
128                 d |= (octets << 5);
129                 *data = cpu_to_le32(d);
130         } else {
131                 u32 plen;
132
133                 plen = octets * 16 / bitrate;
134                 if ((octets * 16 % bitrate) > 0) {
135                         plen++;
136                         if ((bitrate == B43_CCK_RATE_11MB)
137                             && ((octets * 8 % 11) < 4)) {
138                                 raw[1] = 0x84;
139                         } else
140                                 raw[1] = 0x04;
141                 } else
142                         raw[1] = 0x04;
143                 *data |= cpu_to_le32(plen << 16);
144                 raw[0] = b43_plcp_get_ratecode_cck(bitrate);
145         }
146 }
147
148 static u8 b43_calc_fallback_rate(u8 bitrate)
149 {
150         switch (bitrate) {
151         case B43_CCK_RATE_1MB:
152                 return B43_CCK_RATE_1MB;
153         case B43_CCK_RATE_2MB:
154                 return B43_CCK_RATE_1MB;
155         case B43_CCK_RATE_5MB:
156                 return B43_CCK_RATE_2MB;
157         case B43_CCK_RATE_11MB:
158                 return B43_CCK_RATE_5MB;
159         case B43_OFDM_RATE_6MB:
160                 return B43_CCK_RATE_5MB;
161         case B43_OFDM_RATE_9MB:
162                 return B43_OFDM_RATE_6MB;
163         case B43_OFDM_RATE_12MB:
164                 return B43_OFDM_RATE_9MB;
165         case B43_OFDM_RATE_18MB:
166                 return B43_OFDM_RATE_12MB;
167         case B43_OFDM_RATE_24MB:
168                 return B43_OFDM_RATE_18MB;
169         case B43_OFDM_RATE_36MB:
170                 return B43_OFDM_RATE_24MB;
171         case B43_OFDM_RATE_48MB:
172                 return B43_OFDM_RATE_36MB;
173         case B43_OFDM_RATE_54MB:
174                 return B43_OFDM_RATE_48MB;
175         }
176         B43_WARN_ON(1);
177         return 0;
178 }
179
180 static void generate_txhdr_fw4(struct b43_wldev *dev,
181                                struct b43_txhdr_fw4 *txhdr,
182                                const unsigned char *fragment_data,
183                                unsigned int fragment_len,
184                                const struct ieee80211_tx_control *txctl,
185                                u16 cookie)
186 {
187         const struct b43_phy *phy = &dev->phy;
188         const struct ieee80211_hdr *wlhdr =
189             (const struct ieee80211_hdr *)fragment_data;
190         int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
191         u16 fctl = le16_to_cpu(wlhdr->frame_control);
192         u8 rate, rate_fb;
193         int rate_ofdm, rate_fb_ofdm;
194         unsigned int plcp_fragment_len;
195         u32 mac_ctl = 0;
196         u16 phy_ctl = 0;
197         u8 extra_ft = 0;
198
199         memset(txhdr, 0, sizeof(*txhdr));
200
201         rate = txctl->tx_rate;
202         rate_ofdm = b43_is_ofdm_rate(rate);
203         rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
204         rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
205
206         if (rate_ofdm)
207                 txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
208         else
209                 txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
210         txhdr->mac_frame_ctl = wlhdr->frame_control;
211         memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
212
213         /* Calculate duration for fallback rate */
214         if ((rate_fb == rate) ||
215             (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
216             (wlhdr->duration_id == cpu_to_le16(0))) {
217                 /* If the fallback rate equals the normal rate or the
218                  * dur_id field contains an AID, CFP magic or 0,
219                  * use the original dur_id field. */
220                 txhdr->dur_fb = wlhdr->duration_id;
221         } else {
222                 int fbrate_base100kbps = B43_RATE_TO_BASE100KBPS(rate_fb);
223                 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
224                                                                  dev->wl->if_id,
225                                                                  fragment_len,
226                                                                  fbrate_base100kbps);
227         }
228
229         plcp_fragment_len = fragment_len + FCS_LEN;
230         if (use_encryption) {
231                 u8 key_idx = (u16) (txctl->key_idx);
232                 struct b43_key *key;
233                 int wlhdr_len;
234                 size_t iv_len;
235
236                 B43_WARN_ON(key_idx >= dev->max_nr_keys);
237                 key = &(dev->key[key_idx]);
238                 B43_WARN_ON(!key->keyconf);
239
240                 /* Hardware appends ICV. */
241                 plcp_fragment_len += txctl->icv_len;
242
243                 key_idx = b43_kidx_to_fw(dev, key_idx);
244                 mac_ctl |= (key_idx << B43_TX4_MAC_KEYIDX_SHIFT) &
245                            B43_TX4_MAC_KEYIDX;
246                 mac_ctl |= (key->algorithm << B43_TX4_MAC_KEYALG_SHIFT) &
247                            B43_TX4_MAC_KEYALG;
248                 wlhdr_len = ieee80211_get_hdrlen(fctl);
249                 iv_len = min((size_t) txctl->iv_len,
250                              ARRAY_SIZE(txhdr->iv));
251                 memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
252         }
253         b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp),
254                               plcp_fragment_len, rate);
255         b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
256                               plcp_fragment_len, rate_fb);
257
258         /* Extra Frame Types */
259         if (rate_fb_ofdm)
260                 extra_ft |= B43_TX4_EFT_FBOFDM;
261
262         /* Set channel radio code. Note that the micrcode ORs 0x100 to
263          * this value before comparing it to the value in SHM, if this
264          * is a 5Ghz packet.
265          */
266         txhdr->chan_radio_code = phy->channel;
267
268         /* PHY TX Control word */
269         if (rate_ofdm)
270                 phy_ctl |= B43_TX4_PHY_OFDM;
271         if (dev->short_preamble)
272                 phy_ctl |= B43_TX4_PHY_SHORTPRMBL;
273         switch (txctl->antenna_sel_tx) {
274         case 0:
275                 phy_ctl |= B43_TX4_PHY_ANTLAST;
276                 break;
277         case 1:
278                 phy_ctl |= B43_TX4_PHY_ANT0;
279                 break;
280         case 2:
281                 phy_ctl |= B43_TX4_PHY_ANT1;
282                 break;
283         default:
284                 B43_WARN_ON(1);
285         }
286
287         /* MAC control */
288         if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
289                 mac_ctl |= B43_TX4_MAC_ACK;
290         if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
291               ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
292                 mac_ctl |= B43_TX4_MAC_HWSEQ;
293         if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
294                 mac_ctl |= B43_TX4_MAC_STMSDU;
295         if (phy->type == B43_PHYTYPE_A)
296                 mac_ctl |= B43_TX4_MAC_5GHZ;
297
298         /* Generate the RTS or CTS-to-self frame */
299         if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
300             (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
301                 unsigned int len;
302                 struct ieee80211_hdr *hdr;
303                 int rts_rate, rts_rate_fb;
304                 int rts_rate_ofdm, rts_rate_fb_ofdm;
305
306                 rts_rate = txctl->rts_cts_rate;
307                 rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
308                 rts_rate_fb = b43_calc_fallback_rate(rts_rate);
309                 rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
310
311                 if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
312                         ieee80211_ctstoself_get(dev->wl->hw, dev->wl->if_id,
313                                                 fragment_data, fragment_len,
314                                                 txctl,
315                                                 (struct ieee80211_cts *)(txhdr->
316                                                                          rts_frame));
317                         mac_ctl |= B43_TX4_MAC_SENDCTS;
318                         len = sizeof(struct ieee80211_cts);
319                 } else {
320                         ieee80211_rts_get(dev->wl->hw, dev->wl->if_id,
321                                           fragment_data, fragment_len, txctl,
322                                           (struct ieee80211_rts *)(txhdr->
323                                                                    rts_frame));
324                         mac_ctl |= B43_TX4_MAC_SENDRTS;
325                         len = sizeof(struct ieee80211_rts);
326                 }
327                 len += FCS_LEN;
328                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
329                                                                rts_plcp), len,
330                                       rts_rate);
331                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
332                                                                rts_plcp_fb),
333                                       len, rts_rate_fb);
334                 hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
335                 txhdr->rts_dur_fb = hdr->duration_id;
336                 if (rts_rate_ofdm) {
337                         extra_ft |= B43_TX4_EFT_RTSOFDM;
338                         txhdr->phy_rate_rts =
339                             b43_plcp_get_ratecode_ofdm(rts_rate);
340                 } else
341                         txhdr->phy_rate_rts =
342                             b43_plcp_get_ratecode_cck(rts_rate);
343                 if (rts_rate_fb_ofdm)
344                         extra_ft |= B43_TX4_EFT_RTSFBOFDM;
345                 mac_ctl |= B43_TX4_MAC_LONGFRAME;
346         }
347
348         /* Magic cookie */
349         txhdr->cookie = cpu_to_le16(cookie);
350
351         /* Apply the bitfields */
352         txhdr->mac_ctl = cpu_to_le32(mac_ctl);
353         txhdr->phy_ctl = cpu_to_le16(phy_ctl);
354         txhdr->extra_ft = extra_ft;
355 }
356
357 void b43_generate_txhdr(struct b43_wldev *dev,
358                         u8 * txhdr,
359                         const unsigned char *fragment_data,
360                         unsigned int fragment_len,
361                         const struct ieee80211_tx_control *txctl, u16 cookie)
362 {
363         generate_txhdr_fw4(dev, (struct b43_txhdr_fw4 *)txhdr,
364                            fragment_data, fragment_len, txctl, cookie);
365 }
366
367 static s8 b43_rssi_postprocess(struct b43_wldev *dev,
368                                u8 in_rssi, int ofdm,
369                                int adjust_2053, int adjust_2050)
370 {
371         struct b43_phy *phy = &dev->phy;
372         s32 tmp;
373
374         switch (phy->radio_ver) {
375         case 0x2050:
376                 if (ofdm) {
377                         tmp = in_rssi;
378                         if (tmp > 127)
379                                 tmp -= 256;
380                         tmp *= 73;
381                         tmp /= 64;
382                         if (adjust_2050)
383                                 tmp += 25;
384                         else
385                                 tmp -= 3;
386                 } else {
387                         if (dev->dev->bus->sprom.r1.
388                             boardflags_lo & B43_BFL_RSSI) {
389                                 if (in_rssi > 63)
390                                         in_rssi = 63;
391                                 tmp = phy->nrssi_lt[in_rssi];
392                                 tmp = 31 - tmp;
393                                 tmp *= -131;
394                                 tmp /= 128;
395                                 tmp -= 57;
396                         } else {
397                                 tmp = in_rssi;
398                                 tmp = 31 - tmp;
399                                 tmp *= -149;
400                                 tmp /= 128;
401                                 tmp -= 68;
402                         }
403                         if (phy->type == B43_PHYTYPE_G && adjust_2050)
404                                 tmp += 25;
405                 }
406                 break;
407         case 0x2060:
408                 if (in_rssi > 127)
409                         tmp = in_rssi - 256;
410                 else
411                         tmp = in_rssi;
412                 break;
413         default:
414                 tmp = in_rssi;
415                 tmp -= 11;
416                 tmp *= 103;
417                 tmp /= 64;
418                 if (adjust_2053)
419                         tmp -= 109;
420                 else
421                         tmp -= 83;
422         }
423
424         return (s8) tmp;
425 }
426
427 //TODO
428 #if 0
429 static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
430 {
431         struct b43_phy *phy = &dev->phy;
432         s8 ret;
433
434         if (phy->type == B43_PHYTYPE_A) {
435                 //TODO: Incomplete specs.
436                 ret = 0;
437         } else
438                 ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
439
440         return ret;
441 }
442 #endif
443
444 void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
445 {
446         struct ieee80211_rx_status status;
447         struct b43_plcp_hdr6 *plcp;
448         struct ieee80211_hdr *wlhdr;
449         const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
450         u16 fctl;
451         u16 phystat0, phystat3, chanstat, mactime;
452         u32 macstat;
453         u16 chanid;
454         u8 jssi;
455         int padding;
456
457         memset(&status, 0, sizeof(status));
458
459         /* Get metadata about the frame from the header. */
460         phystat0 = le16_to_cpu(rxhdr->phy_status0);
461         phystat3 = le16_to_cpu(rxhdr->phy_status3);
462         jssi = rxhdr->jssi;
463         macstat = le32_to_cpu(rxhdr->mac_status);
464         mactime = le16_to_cpu(rxhdr->mac_time);
465         chanstat = le16_to_cpu(rxhdr->channel);
466
467         if (macstat & B43_RX_MAC_FCSERR)
468                 dev->wl->ieee_stats.dot11FCSErrorCount++;
469         if (macstat & B43_RX_MAC_DECERR) {
470                 /* Decryption with the given key failed.
471                  * Drop the packet. We also won't be able to decrypt it with
472                  * the key in software. */
473                 goto drop;
474         }
475
476         /* Skip PLCP and padding */
477         padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
478         if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
479                 b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
480                 goto drop;
481         }
482         plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
483         skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
484         /* The skb contains the Wireless Header + payload data now */
485         if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */  + FCS_LEN))) {
486                 b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
487                 goto drop;
488         }
489         wlhdr = (struct ieee80211_hdr *)(skb->data);
490         fctl = le16_to_cpu(wlhdr->frame_control);
491         skb_trim(skb, skb->len - FCS_LEN);
492
493         if (macstat & B43_RX_MAC_DEC) {
494                 unsigned int keyidx;
495                 int wlhdr_len;
496
497                 keyidx = ((macstat & B43_RX_MAC_KEYIDX)
498                           >> B43_RX_MAC_KEYIDX_SHIFT);
499                 /* We must adjust the key index here. We want the "physical"
500                  * key index, but the ucode passed it slightly different.
501                  */
502                 keyidx = b43_kidx_to_raw(dev, keyidx);
503                 B43_WARN_ON(keyidx >= dev->max_nr_keys);
504
505                 if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
506                         wlhdr_len = ieee80211_get_hdrlen(fctl);
507                         if (unlikely(skb->len < (wlhdr_len + 3))) {
508                                 b43dbg(dev->wl,
509                                        "RX: Packet size underrun (3)\n");
510                                 goto drop;
511                         }
512                         status.flag |= RX_FLAG_DECRYPTED;
513                 }
514         }
515
516         status.ssi = b43_rssi_postprocess(dev, jssi,
517                                           (phystat0 & B43_RX_PHYST0_OFDM),
518                                           (phystat0 & B43_RX_PHYST0_GAINCTL),
519                                           (phystat3 & B43_RX_PHYST3_TRSTATE));
520         status.noise = dev->stats.link_noise;
521         /* the next line looks wrong, but is what mac80211 wants */
522         status.signal = (jssi * 100) / B43_RX_MAX_SSI;
523         if (phystat0 & B43_RX_PHYST0_OFDM)
524                 status.rate = b43_plcp_get_bitrate_ofdm(plcp);
525         else
526                 status.rate = b43_plcp_get_bitrate_cck(plcp);
527         status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
528         status.mactime = mactime;
529
530         chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
531         switch (chanstat & B43_RX_CHAN_PHYTYPE) {
532         case B43_PHYTYPE_A:
533                 status.phymode = MODE_IEEE80211A;
534                 B43_WARN_ON(1);
535                 /* FIXME: We don't really know which value the "chanid" contains.
536                  *        So the following assignment might be wrong. */
537                 status.channel = chanid;
538                 status.freq = b43_channel_to_freq_5ghz(status.channel);
539                 break;
540         case B43_PHYTYPE_G:
541                 status.phymode = MODE_IEEE80211G;
542                 /* chanid is the radio channel cookie value as used
543                  * to tune the radio. */
544                 status.freq = chanid + 2400;
545                 status.channel = b43_freq_to_channel_2ghz(status.freq);
546                 break;
547         case B43_PHYTYPE_N:
548                 status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/;
549                 /* chanid is the SHM channel cookie. Which is the plain
550                  * channel number in b43. */
551                 status.channel = chanid;
552                 if (chanstat & B43_RX_CHAN_5GHZ)
553                         status.freq = b43_freq_to_channel_5ghz(status.freq);
554                 else
555                         status.freq = b43_freq_to_channel_2ghz(status.freq);
556                 break;
557         default:
558                 B43_WARN_ON(1);
559                 goto drop;
560         }
561
562         dev->stats.last_rx = jiffies;
563         ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
564
565         return;
566 drop:
567         b43dbg(dev->wl, "RX: Packet dropped\n");
568         dev_kfree_skb_any(skb);
569 }
570
571 void b43_handle_txstatus(struct b43_wldev *dev,
572                          const struct b43_txstatus *status)
573 {
574         b43_debugfs_log_txstat(dev, status);
575
576         if (status->intermediate)
577                 return;
578         if (status->for_ampdu)
579                 return;
580         if (!status->acked)
581                 dev->wl->ieee_stats.dot11ACKFailureCount++;
582         if (status->rts_count) {
583                 if (status->rts_count == 0xF)   //FIXME
584                         dev->wl->ieee_stats.dot11RTSFailureCount++;
585                 else
586                         dev->wl->ieee_stats.dot11RTSSuccessCount++;
587         }
588
589         if (b43_using_pio(dev))
590                 b43_pio_handle_txstatus(dev, status);
591         else
592                 b43_dma_handle_txstatus(dev, status);
593 }
594
595 /* Handle TX status report as received through DMA/PIO queues */
596 void b43_handle_hwtxstatus(struct b43_wldev *dev,
597                            const struct b43_hwtxstatus *hw)
598 {
599         struct b43_txstatus status;
600         u8 tmp;
601
602         status.cookie = le16_to_cpu(hw->cookie);
603         status.seq = le16_to_cpu(hw->seq);
604         status.phy_stat = hw->phy_stat;
605         tmp = hw->count;
606         status.frame_count = (tmp >> 4);
607         status.rts_count = (tmp & 0x0F);
608         tmp = hw->flags;
609         status.supp_reason = ((tmp & 0x1C) >> 2);
610         status.pm_indicated = !!(tmp & 0x80);
611         status.intermediate = !!(tmp & 0x40);
612         status.for_ampdu = !!(tmp & 0x20);
613         status.acked = !!(tmp & 0x02);
614
615         b43_handle_txstatus(dev, &status);
616 }
617
618 /* Stop any TX operation on the device (suspend the hardware queues) */
619 void b43_tx_suspend(struct b43_wldev *dev)
620 {
621         if (b43_using_pio(dev))
622                 b43_pio_freeze_txqueues(dev);
623         else
624                 b43_dma_tx_suspend(dev);
625 }
626
627 /* Resume any TX operation on the device (resume the hardware queues) */
628 void b43_tx_resume(struct b43_wldev *dev)
629 {
630         if (b43_using_pio(dev))
631                 b43_pio_thaw_txqueues(dev);
632         else
633                 b43_dma_tx_resume(dev);
634 }
635
636 #if 0
637 static void upload_qos_parms(struct b43_wldev *dev,
638                              const u16 * parms, u16 offset)
639 {
640         int i;
641
642         for (i = 0; i < B43_NR_QOSPARMS; i++) {
643                 b43_shm_write16(dev, B43_SHM_SHARED,
644                                 offset + (i * 2), parms[i]);
645         }
646 }
647 #endif
648
649 /* Initialize the QoS parameters */
650 void b43_qos_init(struct b43_wldev *dev)
651 {
652         /* FIXME: This function must probably be called from the mac80211
653          * config callback. */
654         return;
655
656         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
657         //FIXME kill magic
658         b43_write16(dev, 0x688, b43_read16(dev, 0x688) | 0x4);
659
660         /*TODO: We might need some stack support here to get the values. */
661 }