3 Broadcom B43 wireless driver
5 Transmission (TX/RX) related functions.
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 <m@bues.ch>
10 Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
11 Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
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.
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.
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.
31 #include "phy_common.h"
35 static const struct b43_tx_legacy_rate_phy_ctl_entry b43_tx_legacy_rate_phy_ctl[] = {
36 { B43_CCK_RATE_1MB, 0x0, 0x0 },
37 { B43_CCK_RATE_2MB, 0x0, 0x1 },
38 { B43_CCK_RATE_5MB, 0x0, 0x2 },
39 { B43_CCK_RATE_11MB, 0x0, 0x3 },
40 { B43_OFDM_RATE_6MB, B43_TXH_PHY1_CRATE_1_2, B43_TXH_PHY1_MODUL_BPSK },
41 { B43_OFDM_RATE_9MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_BPSK },
42 { B43_OFDM_RATE_12MB, B43_TXH_PHY1_CRATE_1_2, B43_TXH_PHY1_MODUL_QPSK },
43 { B43_OFDM_RATE_18MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_QPSK },
44 { B43_OFDM_RATE_24MB, B43_TXH_PHY1_CRATE_1_2, B43_TXH_PHY1_MODUL_QAM16 },
45 { B43_OFDM_RATE_36MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_QAM16 },
46 { B43_OFDM_RATE_48MB, B43_TXH_PHY1_CRATE_2_3, B43_TXH_PHY1_MODUL_QAM64 },
47 { B43_OFDM_RATE_54MB, B43_TXH_PHY1_CRATE_3_4, B43_TXH_PHY1_MODUL_QAM64 },
50 static const struct b43_tx_legacy_rate_phy_ctl_entry *
51 b43_tx_legacy_rate_phy_ctl_ent(u8 bitrate)
53 const struct b43_tx_legacy_rate_phy_ctl_entry *e;
56 for (i = 0; i < ARRAY_SIZE(b43_tx_legacy_rate_phy_ctl); i++) {
57 e = &(b43_tx_legacy_rate_phy_ctl[i]);
58 if (e->bitrate == bitrate)
66 /* Extract the bitrate index out of a CCK PLCP header. */
67 static int b43_plcp_get_bitrate_idx_cck(struct b43_plcp_hdr6 *plcp)
69 switch (plcp->raw[0]) {
82 /* Extract the bitrate index out of an OFDM PLCP header. */
83 static int b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool aphy)
85 int base = aphy ? 0 : 4;
87 switch (plcp->raw[0] & 0xF) {
108 u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
111 case B43_CCK_RATE_1MB:
113 case B43_CCK_RATE_2MB:
115 case B43_CCK_RATE_5MB:
117 case B43_CCK_RATE_11MB:
124 u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
127 case B43_OFDM_RATE_6MB:
129 case B43_OFDM_RATE_9MB:
131 case B43_OFDM_RATE_12MB:
133 case B43_OFDM_RATE_18MB:
135 case B43_OFDM_RATE_24MB:
137 case B43_OFDM_RATE_36MB:
139 case B43_OFDM_RATE_48MB:
141 case B43_OFDM_RATE_54MB:
148 void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
149 const u16 octets, const u8 bitrate)
151 __u8 *raw = plcp->raw;
153 if (b43_is_ofdm_rate(bitrate)) {
156 d = b43_plcp_get_ratecode_ofdm(bitrate);
157 B43_WARN_ON(octets & 0xF000);
159 plcp->data = cpu_to_le32(d);
163 plen = octets * 16 / bitrate;
164 if ((octets * 16 % bitrate) > 0) {
166 if ((bitrate == B43_CCK_RATE_11MB)
167 && ((octets * 8 % 11) < 4)) {
173 plcp->data |= cpu_to_le32(plen << 16);
174 raw[0] = b43_plcp_get_ratecode_cck(bitrate);
178 /* TODO: verify if needed for SSLPN or LCN */
179 static u16 b43_generate_tx_phy_ctl1(struct b43_wldev *dev, u8 bitrate)
181 const struct b43_phy *phy = &dev->phy;
182 const struct b43_tx_legacy_rate_phy_ctl_entry *e;
186 if (phy->type == B43_PHYTYPE_LP)
187 bw = B43_TXH_PHY1_BW_20;
189 bw = B43_TXH_PHY1_BW_20;
191 if (0) { /* FIXME: MIMO */
192 } else if (b43_is_cck_rate(bitrate) && phy->type != B43_PHYTYPE_LP) {
196 e = b43_tx_legacy_rate_phy_ctl_ent(bitrate);
198 control |= e->coding_rate;
199 control |= e->modulation;
201 control |= B43_TXH_PHY1_MODE_SISO;
207 static u8 b43_calc_fallback_rate(u8 bitrate)
210 case B43_CCK_RATE_1MB:
211 return B43_CCK_RATE_1MB;
212 case B43_CCK_RATE_2MB:
213 return B43_CCK_RATE_1MB;
214 case B43_CCK_RATE_5MB:
215 return B43_CCK_RATE_2MB;
216 case B43_CCK_RATE_11MB:
217 return B43_CCK_RATE_5MB;
218 case B43_OFDM_RATE_6MB:
219 return B43_CCK_RATE_5MB;
220 case B43_OFDM_RATE_9MB:
221 return B43_OFDM_RATE_6MB;
222 case B43_OFDM_RATE_12MB:
223 return B43_OFDM_RATE_9MB;
224 case B43_OFDM_RATE_18MB:
225 return B43_OFDM_RATE_12MB;
226 case B43_OFDM_RATE_24MB:
227 return B43_OFDM_RATE_18MB;
228 case B43_OFDM_RATE_36MB:
229 return B43_OFDM_RATE_24MB;
230 case B43_OFDM_RATE_48MB:
231 return B43_OFDM_RATE_36MB;
232 case B43_OFDM_RATE_54MB:
233 return B43_OFDM_RATE_48MB;
239 /* Generate a TX data header. */
240 int b43_generate_txhdr(struct b43_wldev *dev,
242 struct sk_buff *skb_frag,
243 struct ieee80211_tx_info *info,
246 const unsigned char *fragment_data = skb_frag->data;
247 unsigned int fragment_len = skb_frag->len;
248 struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
249 const struct b43_phy *phy = &dev->phy;
250 const struct ieee80211_hdr *wlhdr =
251 (const struct ieee80211_hdr *)fragment_data;
252 int use_encryption = !!info->control.hw_key;
253 __le16 fctl = wlhdr->frame_control;
254 struct ieee80211_rate *fbrate;
256 int rate_ofdm, rate_fb_ofdm;
257 unsigned int plcp_fragment_len;
260 bool fill_phy_ctl1 = (phy->type == B43_PHYTYPE_LP ||
261 phy->type == B43_PHYTYPE_N ||
262 phy->type == B43_PHYTYPE_HT);
264 struct ieee80211_rate *txrate;
265 struct ieee80211_tx_rate *rates;
267 memset(txhdr, 0, sizeof(*txhdr));
269 txrate = ieee80211_get_tx_rate(dev->wl->hw, info);
270 rate = txrate ? txrate->hw_value : B43_CCK_RATE_1MB;
271 rate_ofdm = b43_is_ofdm_rate(rate);
272 fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : txrate;
273 rate_fb = fbrate->hw_value;
274 rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
277 txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
279 txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
280 txhdr->mac_frame_ctl = wlhdr->frame_control;
281 memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
283 /* Calculate duration for fallback rate */
284 if ((rate_fb == rate) ||
285 (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
286 (wlhdr->duration_id == cpu_to_le16(0))) {
287 /* If the fallback rate equals the normal rate or the
288 * dur_id field contains an AID, CFP magic or 0,
289 * use the original dur_id field. */
290 txhdr->dur_fb = wlhdr->duration_id;
292 txhdr->dur_fb = ieee80211_generic_frame_duration(
293 dev->wl->hw, info->control.vif, info->band,
294 fragment_len, fbrate);
297 plcp_fragment_len = fragment_len + FCS_LEN;
298 if (use_encryption) {
299 u8 key_idx = info->control.hw_key->hw_key_idx;
304 B43_WARN_ON(key_idx >= ARRAY_SIZE(dev->key));
305 key = &(dev->key[key_idx]);
307 if (unlikely(!key->keyconf)) {
308 /* This key is invalid. This might only happen
309 * in a short timeframe after machine resume before
310 * we were able to reconfigure keys.
311 * Drop this packet completely. Do not transmit it
312 * unencrypted to avoid leaking information. */
316 /* Hardware appends ICV. */
317 plcp_fragment_len += info->control.hw_key->icv_len;
319 key_idx = b43_kidx_to_fw(dev, key_idx);
320 mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
322 mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
324 wlhdr_len = ieee80211_hdrlen(fctl);
325 if (key->algorithm == B43_SEC_ALGO_TKIP) {
328 /* we give the phase1key and iv16 here, the key is stored in
329 * shm. With that the hardware can do phase 2 and encryption.
331 ieee80211_get_tkip_p1k(info->control.hw_key, skb_frag, phase1key);
332 /* phase1key is in host endian. Copy to little-endian txhdr->iv. */
333 for (i = 0; i < 5; i++) {
334 txhdr->iv[i * 2 + 0] = phase1key[i];
335 txhdr->iv[i * 2 + 1] = phase1key[i] >> 8;
338 memcpy(txhdr->iv + 10, ((u8 *) wlhdr) + wlhdr_len, 3);
340 iv_len = min((size_t) info->control.hw_key->iv_len,
341 ARRAY_SIZE(txhdr->iv));
342 memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
345 switch (dev->fw.hdr_format) {
347 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_598.plcp),
348 plcp_fragment_len, rate);
351 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_351.plcp),
352 plcp_fragment_len, rate);
355 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_410.plcp),
356 plcp_fragment_len, rate);
359 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
360 plcp_fragment_len, rate_fb);
362 /* Extra Frame Types */
364 extra_ft |= B43_TXH_EFT_FB_OFDM;
366 extra_ft |= B43_TXH_EFT_FB_CCK;
368 /* Set channel radio code. Note that the micrcode ORs 0x100 to
369 * this value before comparing it to the value in SHM, if this
372 txhdr->chan_radio_code = phy->channel;
374 /* PHY TX Control word */
376 phy_ctl |= B43_TXH_PHY_ENC_OFDM;
378 phy_ctl |= B43_TXH_PHY_ENC_CCK;
379 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
380 phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
382 switch (b43_ieee80211_antenna_sanitize(dev, 0)) {
383 case 0: /* Default */
384 phy_ctl |= B43_TXH_PHY_ANT01AUTO;
386 case 1: /* Antenna 0 */
387 phy_ctl |= B43_TXH_PHY_ANT0;
389 case 2: /* Antenna 1 */
390 phy_ctl |= B43_TXH_PHY_ANT1;
392 case 3: /* Antenna 2 */
393 phy_ctl |= B43_TXH_PHY_ANT2;
395 case 4: /* Antenna 3 */
396 phy_ctl |= B43_TXH_PHY_ANT3;
402 rates = info->control.rates;
404 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
405 mac_ctl |= B43_TXH_MAC_ACK;
406 /* use hardware sequence counter as the non-TID counter */
407 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
408 mac_ctl |= B43_TXH_MAC_HWSEQ;
409 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
410 mac_ctl |= B43_TXH_MAC_STMSDU;
411 if (phy->type == B43_PHYTYPE_A)
412 mac_ctl |= B43_TXH_MAC_5GHZ;
414 /* Overwrite rates[0].count to make the retry calculation
415 * in the tx status easier. need the actual retry limit to
416 * detect whether the fallback rate was used.
418 if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
419 (rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) {
420 rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count;
421 mac_ctl |= B43_TXH_MAC_LONGFRAME;
423 rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count;
426 /* Generate the RTS or CTS-to-self frame */
427 if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
428 (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
430 struct ieee80211_hdr *uninitialized_var(hdr);
431 int rts_rate, rts_rate_fb;
432 int rts_rate_ofdm, rts_rate_fb_ofdm;
433 struct b43_plcp_hdr6 *uninitialized_var(plcp);
434 struct ieee80211_rate *rts_cts_rate;
436 rts_cts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info);
438 rts_rate = rts_cts_rate ? rts_cts_rate->hw_value : B43_CCK_RATE_1MB;
439 rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
440 rts_rate_fb = b43_calc_fallback_rate(rts_rate);
441 rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
443 if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
444 struct ieee80211_cts *uninitialized_var(cts);
446 switch (dev->fw.hdr_format) {
448 cts = (struct ieee80211_cts *)
449 (txhdr->format_598.rts_frame);
452 cts = (struct ieee80211_cts *)
453 (txhdr->format_351.rts_frame);
456 cts = (struct ieee80211_cts *)
457 (txhdr->format_410.rts_frame);
460 ieee80211_ctstoself_get(dev->wl->hw, info->control.vif,
461 fragment_data, fragment_len,
463 mac_ctl |= B43_TXH_MAC_SENDCTS;
464 len = sizeof(struct ieee80211_cts);
466 struct ieee80211_rts *uninitialized_var(rts);
468 switch (dev->fw.hdr_format) {
470 rts = (struct ieee80211_rts *)
471 (txhdr->format_598.rts_frame);
474 rts = (struct ieee80211_rts *)
475 (txhdr->format_351.rts_frame);
478 rts = (struct ieee80211_rts *)
479 (txhdr->format_410.rts_frame);
482 ieee80211_rts_get(dev->wl->hw, info->control.vif,
483 fragment_data, fragment_len,
485 mac_ctl |= B43_TXH_MAC_SENDRTS;
486 len = sizeof(struct ieee80211_rts);
490 /* Generate the PLCP headers for the RTS/CTS frame */
491 switch (dev->fw.hdr_format) {
493 plcp = &txhdr->format_598.rts_plcp;
496 plcp = &txhdr->format_351.rts_plcp;
499 plcp = &txhdr->format_410.rts_plcp;
502 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
504 plcp = &txhdr->rts_plcp_fb;
505 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
508 switch (dev->fw.hdr_format) {
510 hdr = (struct ieee80211_hdr *)
511 (&txhdr->format_598.rts_frame);
514 hdr = (struct ieee80211_hdr *)
515 (&txhdr->format_351.rts_frame);
518 hdr = (struct ieee80211_hdr *)
519 (&txhdr->format_410.rts_frame);
522 txhdr->rts_dur_fb = hdr->duration_id;
525 extra_ft |= B43_TXH_EFT_RTS_OFDM;
526 txhdr->phy_rate_rts =
527 b43_plcp_get_ratecode_ofdm(rts_rate);
529 extra_ft |= B43_TXH_EFT_RTS_CCK;
530 txhdr->phy_rate_rts =
531 b43_plcp_get_ratecode_cck(rts_rate);
533 if (rts_rate_fb_ofdm)
534 extra_ft |= B43_TXH_EFT_RTSFB_OFDM;
536 extra_ft |= B43_TXH_EFT_RTSFB_CCK;
538 if (rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS &&
540 txhdr->phy_ctl1_rts = cpu_to_le16(
541 b43_generate_tx_phy_ctl1(dev, rts_rate));
542 txhdr->phy_ctl1_rts_fb = cpu_to_le16(
543 b43_generate_tx_phy_ctl1(dev, rts_rate_fb));
548 switch (dev->fw.hdr_format) {
550 txhdr->format_598.cookie = cpu_to_le16(cookie);
553 txhdr->format_351.cookie = cpu_to_le16(cookie);
556 txhdr->format_410.cookie = cpu_to_le16(cookie);
562 cpu_to_le16(b43_generate_tx_phy_ctl1(dev, rate));
564 cpu_to_le16(b43_generate_tx_phy_ctl1(dev, rate_fb));
567 /* Apply the bitfields */
568 txhdr->mac_ctl = cpu_to_le32(mac_ctl);
569 txhdr->phy_ctl = cpu_to_le16(phy_ctl);
570 txhdr->extra_ft = extra_ft;
575 static s8 b43_rssi_postprocess(struct b43_wldev *dev,
576 u8 in_rssi, int ofdm,
577 int adjust_2053, int adjust_2050)
579 struct b43_phy *phy = &dev->phy;
580 struct b43_phy_g *gphy = phy->g;
583 switch (phy->radio_ver) {
596 if (dev->dev->bus_sprom->
597 boardflags_lo & B43_BFL_RSSI) {
600 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
601 tmp = gphy->nrssi_lt[in_rssi];
613 if (phy->type == B43_PHYTYPE_G && adjust_2050)
639 static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
641 struct b43_phy *phy = &dev->phy;
644 if (phy->type == B43_PHYTYPE_A) {
645 //TODO: Incomplete specs.
648 ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
654 void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
656 struct ieee80211_rx_status status;
657 struct b43_plcp_hdr6 *plcp;
658 struct ieee80211_hdr *wlhdr;
659 const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
661 u16 phystat0, phystat3;
662 u16 uninitialized_var(chanstat), uninitialized_var(mactime);
663 u32 uninitialized_var(macstat);
666 int padding, rate_idx;
668 memset(&status, 0, sizeof(status));
670 /* Get metadata about the frame from the header. */
671 phystat0 = le16_to_cpu(rxhdr->phy_status0);
672 phystat3 = le16_to_cpu(rxhdr->phy_status3);
673 switch (dev->fw.hdr_format) {
675 macstat = le32_to_cpu(rxhdr->format_598.mac_status);
676 mactime = le16_to_cpu(rxhdr->format_598.mac_time);
677 chanstat = le16_to_cpu(rxhdr->format_598.channel);
681 macstat = le32_to_cpu(rxhdr->format_351.mac_status);
682 mactime = le16_to_cpu(rxhdr->format_351.mac_time);
683 chanstat = le16_to_cpu(rxhdr->format_351.channel);
686 phytype = chanstat & B43_RX_CHAN_PHYTYPE;
688 if (unlikely(macstat & B43_RX_MAC_FCSERR)) {
689 dev->wl->ieee_stats.dot11FCSErrorCount++;
690 status.flag |= RX_FLAG_FAILED_FCS_CRC;
692 if (unlikely(phystat0 & (B43_RX_PHYST0_PLCPHCF | B43_RX_PHYST0_PLCPFV)))
693 status.flag |= RX_FLAG_FAILED_PLCP_CRC;
694 if (phystat0 & B43_RX_PHYST0_SHORTPRMBL)
695 status.flag |= RX_FLAG_SHORTPRE;
696 if (macstat & B43_RX_MAC_DECERR) {
697 /* Decryption with the given key failed.
698 * Drop the packet. We also won't be able to decrypt it with
699 * the key in software. */
703 /* Skip PLCP and padding */
704 padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
705 if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
706 b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
709 plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
710 skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
711 /* The skb contains the Wireless Header + payload data now */
712 if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */ + FCS_LEN))) {
713 b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
716 wlhdr = (struct ieee80211_hdr *)(skb->data);
717 fctl = wlhdr->frame_control;
719 if (macstat & B43_RX_MAC_DEC) {
723 keyidx = ((macstat & B43_RX_MAC_KEYIDX)
724 >> B43_RX_MAC_KEYIDX_SHIFT);
725 /* We must adjust the key index here. We want the "physical"
726 * key index, but the ucode passed it slightly different.
728 keyidx = b43_kidx_to_raw(dev, keyidx);
729 B43_WARN_ON(keyidx >= ARRAY_SIZE(dev->key));
731 if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
732 wlhdr_len = ieee80211_hdrlen(fctl);
733 if (unlikely(skb->len < (wlhdr_len + 3))) {
735 "RX: Packet size underrun (3)\n");
738 status.flag |= RX_FLAG_DECRYPTED;
742 /* Link quality statistics */
743 switch (chanstat & B43_RX_CHAN_PHYTYPE) {
745 /* TODO: is max the right choice? */
746 status.signal = max_t(__s8,
747 max(rxhdr->phy_ht_power0, rxhdr->phy_ht_power1),
748 rxhdr->phy_ht_power2);
751 /* Broadcom has code for min and avg, but always uses max */
752 if (rxhdr->power0 == 16 || rxhdr->power0 == 32)
753 status.signal = max(rxhdr->power1, rxhdr->power2);
755 status.signal = max(rxhdr->power0, rxhdr->power1);
761 status.signal = b43_rssi_postprocess(dev, rxhdr->jssi,
762 (phystat0 & B43_RX_PHYST0_OFDM),
763 (phystat0 & B43_RX_PHYST0_GAINCTL),
764 (phystat3 & B43_RX_PHYST3_TRSTATE));
768 if (phystat0 & B43_RX_PHYST0_OFDM)
769 rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
770 phytype == B43_PHYTYPE_A);
772 rate_idx = b43_plcp_get_bitrate_idx_cck(plcp);
773 if (unlikely(rate_idx == -1)) {
774 /* PLCP seems to be corrupted.
775 * Drop the frame, if we are not interested in corrupted frames. */
776 if (!(dev->wl->filter_flags & FIF_PLCPFAIL))
779 status.rate_idx = rate_idx;
780 status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
783 * All frames on monitor interfaces and beacons always need a full
784 * 64-bit timestamp. Monitor interfaces need it for diagnostic
785 * purposes and beacons for IBSS merging.
786 * This code assumes we get to process the packet within 16 bits
787 * of timestamp, i.e. about 65 milliseconds after the PHY received
790 if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) {
793 b43_tsf_read(dev, &status.mactime);
794 low_mactime_now = status.mactime;
795 status.mactime = status.mactime & ~0xFFFFULL;
796 status.mactime += mactime;
797 if (low_mactime_now <= mactime)
798 status.mactime -= 0x10000;
799 status.flag |= RX_FLAG_MACTIME_START;
802 chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
803 switch (chanstat & B43_RX_CHAN_PHYTYPE) {
805 status.band = IEEE80211_BAND_5GHZ;
807 /* FIXME: We don't really know which value the "chanid" contains.
808 * So the following assignment might be wrong. */
809 status.freq = b43_channel_to_freq_5ghz(chanid);
812 status.band = IEEE80211_BAND_2GHZ;
813 /* chanid is the radio channel cookie value as used
814 * to tune the radio. */
815 status.freq = chanid + 2400;
820 /* chanid is the SHM channel cookie. Which is the plain
821 * channel number in b43. */
822 if (chanstat & B43_RX_CHAN_5GHZ) {
823 status.band = IEEE80211_BAND_5GHZ;
824 status.freq = b43_freq_to_channel_5ghz(chanid);
826 status.band = IEEE80211_BAND_2GHZ;
827 status.freq = b43_freq_to_channel_2ghz(chanid);
835 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
836 ieee80211_rx_ni(dev->wl->hw, skb);
843 dev_kfree_skb_any(skb);
846 void b43_handle_txstatus(struct b43_wldev *dev,
847 const struct b43_txstatus *status)
849 b43_debugfs_log_txstat(dev, status);
851 if (status->intermediate)
853 if (status->for_ampdu)
856 dev->wl->ieee_stats.dot11ACKFailureCount++;
857 if (status->rts_count) {
858 if (status->rts_count == 0xF) //FIXME
859 dev->wl->ieee_stats.dot11RTSFailureCount++;
861 dev->wl->ieee_stats.dot11RTSSuccessCount++;
864 if (b43_using_pio_transfers(dev))
865 b43_pio_handle_txstatus(dev, status);
867 b43_dma_handle_txstatus(dev, status);
869 b43_phy_txpower_check(dev, 0);
872 /* Fill out the mac80211 TXstatus report based on the b43-specific
873 * txstatus report data. This returns a boolean whether the frame was
874 * successfully transmitted. */
875 bool b43_fill_txstatus_report(struct b43_wldev *dev,
876 struct ieee80211_tx_info *report,
877 const struct b43_txstatus *status)
879 bool frame_success = true;
882 /* preserve the confiured retry limit before clearing the status
883 * The xmit function has overwritten the rc's value with the actual
884 * retry limit done by the hardware */
885 retry_limit = report->status.rates[0].count;
886 ieee80211_tx_info_clear_status(report);
889 /* The frame was ACKed. */
890 report->flags |= IEEE80211_TX_STAT_ACK;
892 /* The frame was not ACKed... */
893 if (!(report->flags & IEEE80211_TX_CTL_NO_ACK)) {
894 /* ...but we expected an ACK. */
895 frame_success = false;
898 if (status->frame_count == 0) {
899 /* The frame was not transmitted at all. */
900 report->status.rates[0].count = 0;
901 } else if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
903 * If the short retries (RTS, not data frame) have exceeded
904 * the limit, the hw will not have tried the selected rate,
905 * but will have used the fallback rate instead.
906 * Don't let the rate control count attempts for the selected
907 * rate in this case, otherwise the statistics will be off.
909 report->status.rates[0].count = 0;
910 report->status.rates[1].count = status->frame_count;
912 if (status->frame_count > retry_limit) {
913 report->status.rates[0].count = retry_limit;
914 report->status.rates[1].count = status->frame_count -
918 report->status.rates[0].count = status->frame_count;
919 report->status.rates[1].idx = -1;
923 return frame_success;
926 /* Stop any TX operation on the device (suspend the hardware queues) */
927 void b43_tx_suspend(struct b43_wldev *dev)
929 if (b43_using_pio_transfers(dev))
930 b43_pio_tx_suspend(dev);
932 b43_dma_tx_suspend(dev);
935 /* Resume any TX operation on the device (resume the hardware queues) */
936 void b43_tx_resume(struct b43_wldev *dev)
938 if (b43_using_pio_transfers(dev))
939 b43_pio_tx_resume(dev);
941 b43_dma_tx_resume(dev);