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iwlwifi: Fix uCode error on association
[deliverable/linux.git] / drivers / net / wireless / b43 / xmit.c
CommitLineData
e4d6b795
MB		 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>
1f21ad2a 8 Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
e4d6b795
MB		 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"
03b29773 33
e4d6b795
MB		 34
35/* Extract the bitrate out of a CCK PLCP header. */
36static 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. */
53static 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
77u8 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
93u8 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
117void 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)) {
1a09404a
MB		 124 u32 d;
125
126 d = b43_plcp_get_ratecode_ofdm(bitrate);
e4d6b795 127 B43_WARN_ON(octets & 0xF000);
1a09404a
MB		 128 d |= (octets << 5);
129 *data = cpu_to_le32(d);
e4d6b795
MB		 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
148static 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
eb189d8b
MB		 180/* Generate a TX data header. */
181void b43_generate_txhdr(struct b43_wldev *dev,
182 u8 *_txhdr,
183 const unsigned char *fragment_data,
184 unsigned int fragment_len,
185 const struct ieee80211_tx_control *txctl,
186 u16 cookie)
e4d6b795 187{
eb189d8b 188 struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
e4d6b795
MB		 189 const struct b43_phy *phy = &dev->phy;
190 const struct ieee80211_hdr *wlhdr =
191 (const struct ieee80211_hdr *)fragment_data;
192 int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
193 u16 fctl = le16_to_cpu(wlhdr->frame_control);
194 u8 rate, rate_fb;
195 int rate_ofdm, rate_fb_ofdm;
196 unsigned int plcp_fragment_len;
197 u32 mac_ctl = 0;
198 u16 phy_ctl = 0;
199 u8 extra_ft = 0;
200
201 memset(txhdr, 0, sizeof(*txhdr));
202
203 rate = txctl->tx_rate;
204 rate_ofdm = b43_is_ofdm_rate(rate);
205 rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
206 rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
207
208 if (rate_ofdm)
209 txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
210 else
211 txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
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 = B43_RATE_TO_BASE100KBPS(rate_fb);
225 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
32bfd35d 226 txctl->vif,
e4d6b795
MB		 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 b43_key *key;
235 int wlhdr_len;
236 size_t iv_len;
237
238 B43_WARN_ON(key_idx >= dev->max_nr_keys);
239 key = &(dev->key[key_idx]);
240 B43_WARN_ON(!key->keyconf);
241
242 /* Hardware appends ICV. */
243 plcp_fragment_len += txctl->icv_len;
244
245 key_idx = b43_kidx_to_fw(dev, key_idx);
eb189d8b
MB		 246 mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
247 B43_TXH_MAC_KEYIDX;
248 mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
249 B43_TXH_MAC_KEYALG;
e4d6b795
MB		 250 wlhdr_len = ieee80211_get_hdrlen(fctl);
251 iv_len = min((size_t) txctl->iv_len,
252 ARRAY_SIZE(txhdr->iv));
253 memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
254 }
eb189d8b
MB		 255 if (b43_is_old_txhdr_format(dev)) {
256 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp),
257 plcp_fragment_len, rate);
258 } else {
259 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp),
260 plcp_fragment_len, rate);
261 }
e4d6b795
MB		 262 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
263 plcp_fragment_len, rate_fb);
264
265 /* Extra Frame Types */
266 if (rate_fb_ofdm)
eb189d8b
MB		 267 extra_ft |= B43_TXH_EFT_FB_OFDM;
268 else
269 extra_ft |= B43_TXH_EFT_FB_CCK;
e4d6b795
MB		 270
271 /* Set channel radio code. Note that the micrcode ORs 0x100 to
272 * this value before comparing it to the value in SHM, if this
273 * is a 5Ghz packet.
274 */
275 txhdr->chan_radio_code = phy->channel;
276
277 /* PHY TX Control word */
278 if (rate_ofdm)
eb189d8b
MB		 279 phy_ctl |= B43_TXH_PHY_ENC_OFDM;
280 else
281 phy_ctl |= B43_TXH_PHY_ENC_CCK;
e4d6b795 282 if (dev->short_preamble)
eb189d8b 283 phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
9db1f6d7
MB		 284
285 switch (b43_ieee80211_antenna_sanitize(dev, txctl->antenna_sel_tx)) {
286 case 0: /* Default */
eb189d8b 287 phy_ctl |= B43_TXH_PHY_ANT01AUTO;
e4d6b795 288 break;
9db1f6d7 289 case 1: /* Antenna 0 */
eb189d8b 290 phy_ctl |= B43_TXH_PHY_ANT0;
e4d6b795 291 break;
9db1f6d7 292 case 2: /* Antenna 1 */
eb189d8b
MB		 293 phy_ctl |= B43_TXH_PHY_ANT1;
294 break;
295 case 3: /* Antenna 2 */
296 phy_ctl |= B43_TXH_PHY_ANT2;
297 break;
298 case 4: /* Antenna 3 */
299 phy_ctl |= B43_TXH_PHY_ANT3;
e4d6b795
MB		 300 break;
301 default:
302 B43_WARN_ON(1);
303 }
304
305 /* MAC control */
306 if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
eb189d8b 307 mac_ctl |= B43_TXH_MAC_ACK;
e4d6b795
MB		 308 if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
309 ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
eb189d8b 310 mac_ctl |= B43_TXH_MAC_HWSEQ;
e4d6b795 311 if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
eb189d8b 312 mac_ctl |= B43_TXH_MAC_STMSDU;
e4d6b795 313 if (phy->type == B43_PHYTYPE_A)
eb189d8b 314 mac_ctl |= B43_TXH_MAC_5GHZ;
74cfdba7 315 if (txctl->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
eb189d8b 316 mac_ctl |= B43_TXH_MAC_LONGFRAME;
e4d6b795
MB		 317
318 /* Generate the RTS or CTS-to-self frame */
319 if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
320 (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
321 unsigned int len;
322 struct ieee80211_hdr *hdr;
323 int rts_rate, rts_rate_fb;
324 int rts_rate_ofdm, rts_rate_fb_ofdm;
eb189d8b 325 struct b43_plcp_hdr6 *plcp;
e4d6b795
MB		 326
327 rts_rate = txctl->rts_cts_rate;
328 rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
329 rts_rate_fb = b43_calc_fallback_rate(rts_rate);
330 rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
331
332 if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
eb189d8b
MB		 333 struct ieee80211_cts *cts;
334
335 if (b43_is_old_txhdr_format(dev)) {
336 cts = (struct ieee80211_cts *)
337 (txhdr->old_format.rts_frame);
338 } else {
339 cts = (struct ieee80211_cts *)
340 (txhdr->new_format.rts_frame);
341 }
32bfd35d 342 ieee80211_ctstoself_get(dev->wl->hw, txctl->vif,
e4d6b795 343 fragment_data, fragment_len,
eb189d8b
MB		 344 txctl, cts);
345 mac_ctl |= B43_TXH_MAC_SENDCTS;
e4d6b795
MB		 346 len = sizeof(struct ieee80211_cts);
347 } else {
eb189d8b
MB		 348 struct ieee80211_rts *rts;
349
350 if (b43_is_old_txhdr_format(dev)) {
351 rts = (struct ieee80211_rts *)
352 (txhdr->old_format.rts_frame);
353 } else {
354 rts = (struct ieee80211_rts *)
355 (txhdr->new_format.rts_frame);
356 }
32bfd35d 357 ieee80211_rts_get(dev->wl->hw, txctl->vif,
eb189d8b
MB		 358 fragment_data, fragment_len,
359 txctl, rts);
360 mac_ctl |= B43_TXH_MAC_SENDRTS;
e4d6b795
MB		 361 len = sizeof(struct ieee80211_rts);
362 }
363 len += FCS_LEN;
eb189d8b
MB		 364
365 /* Generate the PLCP headers for the RTS/CTS frame */
366 if (b43_is_old_txhdr_format(dev))
367 plcp = &txhdr->old_format.rts_plcp;
368 else
369 plcp = &txhdr->new_format.rts_plcp;
370 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
371 len, rts_rate);
372 plcp = &txhdr->rts_plcp_fb;
373 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
e4d6b795 374 len, rts_rate_fb);
eb189d8b
MB		 375
376 if (b43_is_old_txhdr_format(dev)) {
377 hdr = (struct ieee80211_hdr *)
378 (&txhdr->old_format.rts_frame);
379 } else {
380 hdr = (struct ieee80211_hdr *)
381 (&txhdr->new_format.rts_frame);
382 }
e4d6b795 383 txhdr->rts_dur_fb = hdr->duration_id;
eb189d8b 384
e4d6b795 385 if (rts_rate_ofdm) {
eb189d8b 386 extra_ft |= B43_TXH_EFT_RTS_OFDM;
e4d6b795
MB		 387 txhdr->phy_rate_rts =
388 b43_plcp_get_ratecode_ofdm(rts_rate);
eb189d8b
MB		 389 } else {
390 extra_ft |= B43_TXH_EFT_RTS_CCK;
e4d6b795
MB		 391 txhdr->phy_rate_rts =
392 b43_plcp_get_ratecode_cck(rts_rate);
eb189d8b 393 }
e4d6b795 394 if (rts_rate_fb_ofdm)
eb189d8b
MB		 395 extra_ft |= B43_TXH_EFT_RTSFB_OFDM;
396 else
397 extra_ft |= B43_TXH_EFT_RTSFB_CCK;
e4d6b795
MB		 398 }
399
400 /* Magic cookie */
eb189d8b
MB		 401 if (b43_is_old_txhdr_format(dev))
402 txhdr->old_format.cookie = cpu_to_le16(cookie);
403 else
404 txhdr->new_format.cookie = cpu_to_le16(cookie);
e4d6b795
MB		 405
406 /* Apply the bitfields */
407 txhdr->mac_ctl = cpu_to_le32(mac_ctl);
408 txhdr->phy_ctl = cpu_to_le16(phy_ctl);
409 txhdr->extra_ft = extra_ft;
e4d6b795 410
e4d6b795
MB		 411}
412
413static s8 b43_rssi_postprocess(struct b43_wldev *dev,
414 u8 in_rssi, int ofdm,
415 int adjust_2053, int adjust_2050)
416{
417 struct b43_phy *phy = &dev->phy;
418 s32 tmp;
419
420 switch (phy->radio_ver) {
421 case 0x2050:
422 if (ofdm) {
423 tmp = in_rssi;
424 if (tmp > 127)
425 tmp -= 256;
426 tmp *= 73;
427 tmp /= 64;
428 if (adjust_2050)
429 tmp += 25;
430 else
431 tmp -= 3;
432 } else {
95de2841 433 if (dev->dev->bus->sprom.
e4d6b795
MB		 434 boardflags_lo & B43_BFL_RSSI) {
435 if (in_rssi > 63)
436 in_rssi = 63;
437 tmp = phy->nrssi_lt[in_rssi];
438 tmp = 31 - tmp;
439 tmp *= -131;
440 tmp /= 128;
441 tmp -= 57;
442 } else {
443 tmp = in_rssi;
444 tmp = 31 - tmp;
445 tmp *= -149;
446 tmp /= 128;
447 tmp -= 68;
448 }
449 if (phy->type == B43_PHYTYPE_G && adjust_2050)
450 tmp += 25;
451 }
452 break;
453 case 0x2060:
454 if (in_rssi > 127)
455 tmp = in_rssi - 256;
456 else
457 tmp = in_rssi;
458 break;
459 default:
460 tmp = in_rssi;
461 tmp -= 11;
462 tmp *= 103;
463 tmp /= 64;
464 if (adjust_2053)
465 tmp -= 109;
466 else
467 tmp -= 83;
468 }
469
470 return (s8) tmp;
471}
472
473//TODO
474#if 0
475static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
476{
477 struct b43_phy *phy = &dev->phy;
478 s8 ret;
479
480 if (phy->type == B43_PHYTYPE_A) {
481 //TODO: Incomplete specs.
482 ret = 0;
483 } else
484 ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
485
486 return ret;
487}
488#endif
489
490void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
491{
492 struct ieee80211_rx_status status;
493 struct b43_plcp_hdr6 *plcp;
494 struct ieee80211_hdr *wlhdr;
495 const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
496 u16 fctl;
497 u16 phystat0, phystat3, chanstat, mactime;
498 u32 macstat;
499 u16 chanid;
500 u8 jssi;
501 int padding;
502
503 memset(&status, 0, sizeof(status));
504
505 /* Get metadata about the frame from the header. */
506 phystat0 = le16_to_cpu(rxhdr->phy_status0);
507 phystat3 = le16_to_cpu(rxhdr->phy_status3);
508 jssi = rxhdr->jssi;
509 macstat = le32_to_cpu(rxhdr->mac_status);
510 mactime = le16_to_cpu(rxhdr->mac_time);
511 chanstat = le16_to_cpu(rxhdr->channel);
512
513 if (macstat & B43_RX_MAC_FCSERR)
514 dev->wl->ieee_stats.dot11FCSErrorCount++;
515 if (macstat & B43_RX_MAC_DECERR) {
516 /* Decryption with the given key failed.
517 * Drop the packet. We also won't be able to decrypt it with
518 * the key in software. */
519 goto drop;
520 }
521
522 /* Skip PLCP and padding */
523 padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
524 if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
525 b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
526 goto drop;
527 }
528 plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
529 skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
530 /* The skb contains the Wireless Header + payload data now */
531 if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */ + FCS_LEN))) {
532 b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
533 goto drop;
534 }
535 wlhdr = (struct ieee80211_hdr *)(skb->data);
536 fctl = le16_to_cpu(wlhdr->frame_control);
e4d6b795
MB		 537
538 if (macstat & B43_RX_MAC_DEC) {
539 unsigned int keyidx;
540 int wlhdr_len;
541
542 keyidx = ((macstat & B43_RX_MAC_KEYIDX)
543 >> B43_RX_MAC_KEYIDX_SHIFT);
544 /* We must adjust the key index here. We want the "physical"
545 * key index, but the ucode passed it slightly different.
546 */
547 keyidx = b43_kidx_to_raw(dev, keyidx);
548 B43_WARN_ON(keyidx >= dev->max_nr_keys);
549
550 if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
551 wlhdr_len = ieee80211_get_hdrlen(fctl);
552 if (unlikely(skb->len < (wlhdr_len + 3))) {
553 b43dbg(dev->wl,
554 "RX: Packet size underrun (3)\n");
555 goto drop;
556 }
557 status.flag |= RX_FLAG_DECRYPTED;
558 }
559 }
560
561 status.ssi = b43_rssi_postprocess(dev, jssi,
562 (phystat0 & B43_RX_PHYST0_OFDM),
563 (phystat0 & B43_RX_PHYST0_GAINCTL),
564 (phystat3 & B43_RX_PHYST3_TRSTATE));
565 status.noise = dev->stats.link_noise;
566 /* the next line looks wrong, but is what mac80211 wants */
567 status.signal = (jssi * 100) / B43_RX_MAX_SSI;
568 if (phystat0 & B43_RX_PHYST0_OFDM)
569 status.rate = b43_plcp_get_bitrate_ofdm(plcp);
570 else
571 status.rate = b43_plcp_get_bitrate_cck(plcp);
572 status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
c0ddd04d
JL		 573
574 /*
575 * If monitors are present get full 64-bit timestamp. This
576 * code assumes we get to process the packet within 16 bits
577 * of timestamp, i.e. about 65 milliseconds after the PHY
578 * received the first symbol.
579 */
580 if (dev->wl->radiotap_enabled) {
581 u16 low_mactime_now;
582
583 b43_tsf_read(dev, &status.mactime);
584 low_mactime_now = status.mactime;
585 status.mactime = status.mactime & ~0xFFFFULL;
586 status.mactime += mactime;
587 if (low_mactime_now <= mactime)
588 status.mactime -= 0x10000;
589 status.flag |= RX_FLAG_TSFT;
590 }
e4d6b795
MB		 591
592 chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
593 switch (chanstat & B43_RX_CHAN_PHYTYPE) {
594 case B43_PHYTYPE_A:
595 status.phymode = MODE_IEEE80211A;
d987160b
MB		 596 B43_WARN_ON(1);
597 /* FIXME: We don't really know which value the "chanid" contains.
598 * So the following assignment might be wrong. */
599 status.channel = chanid;
600 status.freq = b43_channel_to_freq_5ghz(status.channel);
e4d6b795
MB		 601 break;
602 case B43_PHYTYPE_G:
603 status.phymode = MODE_IEEE80211G;
d987160b
MB		 604 /* chanid is the radio channel cookie value as used
605 * to tune the radio. */
e4d6b795 606 status.freq = chanid + 2400;
d987160b
MB		 607 status.channel = b43_freq_to_channel_2ghz(status.freq);
608 break;
609 case B43_PHYTYPE_N:
610 status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/;
611 /* chanid is the SHM channel cookie. Which is the plain
612 * channel number in b43. */
613 status.channel = chanid;
614 if (chanstat & B43_RX_CHAN_5GHZ)
615 status.freq = b43_freq_to_channel_5ghz(status.freq);
616 else
617 status.freq = b43_freq_to_channel_2ghz(status.freq);
e4d6b795
MB		 618 break;
619 default:
620 B43_WARN_ON(1);
d987160b 621 goto drop;
e4d6b795
MB		 622 }
623
624 dev->stats.last_rx = jiffies;
625 ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
626
627 return;
628drop:
629 b43dbg(dev->wl, "RX: Packet dropped\n");
630 dev_kfree_skb_any(skb);
631}
632
633void b43_handle_txstatus(struct b43_wldev *dev,
634 const struct b43_txstatus *status)
635{
636 b43_debugfs_log_txstat(dev, status);
637
638 if (status->intermediate)
639 return;
640 if (status->for_ampdu)
641 return;
642 if (!status->acked)
643 dev->wl->ieee_stats.dot11ACKFailureCount++;
644 if (status->rts_count) {
645 if (status->rts_count == 0xF) //FIXME
646 dev->wl->ieee_stats.dot11RTSFailureCount++;
647 else
648 dev->wl->ieee_stats.dot11RTSSuccessCount++;
649 }
650
03b29773 651 b43_dma_handle_txstatus(dev, status);
e4d6b795
MB		 652}
653
654/* Handle TX status report as received through DMA/PIO queues */
655void b43_handle_hwtxstatus(struct b43_wldev *dev,
656 const struct b43_hwtxstatus *hw)
657{
658 struct b43_txstatus status;
659 u8 tmp;
660
661 status.cookie = le16_to_cpu(hw->cookie);
662 status.seq = le16_to_cpu(hw->seq);
663 status.phy_stat = hw->phy_stat;
664 tmp = hw->count;
665 status.frame_count = (tmp >> 4);
666 status.rts_count = (tmp & 0x0F);
667 tmp = hw->flags;
668 status.supp_reason = ((tmp & 0x1C) >> 2);
669 status.pm_indicated = !!(tmp & 0x80);
670 status.intermediate = !!(tmp & 0x40);
671 status.for_ampdu = !!(tmp & 0x20);
672 status.acked = !!(tmp & 0x02);
673
674 b43_handle_txstatus(dev, &status);
675}
676
677/* Stop any TX operation on the device (suspend the hardware queues) */
678void b43_tx_suspend(struct b43_wldev *dev)
679{
03b29773 680 b43_dma_tx_suspend(dev);
e4d6b795
MB		 681}
682
683/* Resume any TX operation on the device (resume the hardware queues) */
684void b43_tx_resume(struct b43_wldev *dev)
685{
03b29773 686 b43_dma_tx_resume(dev);
e4d6b795
MB		 687}
688
689#if 0
690static void upload_qos_parms(struct b43_wldev *dev,
691 const u16 * parms, u16 offset)
692{
693 int i;
694
695 for (i = 0; i < B43_NR_QOSPARMS; i++) {
696 b43_shm_write16(dev, B43_SHM_SHARED,
697 offset + (i * 2), parms[i]);
698 }
699}
700#endif
701
702/* Initialize the QoS parameters */
703void b43_qos_init(struct b43_wldev *dev)
704{
705 /* FIXME: This function must probably be called from the mac80211
706 * config callback. */
707 return;
708
709 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
710 //FIXME kill magic
711 b43_write16(dev, 0x688, b43_read16(dev, 0x688) | 0x4);
712
713 /*TODO: We might need some stack support here to get the values. */
714}
Linux kernel - Deliverables
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