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 <m@bues.ch> 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_idx_cck(struct b43legacy_plcp_hdr6 *plcp) 41 { 42 switch (plcp->raw[0]) { 43 case 0x0A: 44 return 0; 45 case 0x14: 46 return 1; 47 case 0x37: 48 return 2; 49 case 0x6E: 50 return 3; 51 } 52 B43legacy_BUG_ON(1); 53 return -1; 54 } 55 56 /* Extract the bitrate out of an OFDM PLCP header. */ 57 static u8 b43legacy_plcp_get_bitrate_idx_ofdm(struct b43legacy_plcp_hdr6 *plcp, 58 bool aphy) 59 { 60 int base = aphy ? 0 : 4; 61 62 switch (plcp->raw[0] & 0xF) { 63 case 0xB: 64 return base + 0; 65 case 0xF: 66 return base + 1; 67 case 0xA: 68 return base + 2; 69 case 0xE: 70 return base + 3; 71 case 0x9: 72 return base + 4; 73 case 0xD: 74 return base + 5; 75 case 0x8: 76 return base + 6; 77 case 0xC: 78 return base + 7; 79 } 80 B43legacy_BUG_ON(1); 81 return -1; 82 } 83 84 u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate) 85 { 86 switch (bitrate) { 87 case B43legacy_CCK_RATE_1MB: 88 return 0x0A; 89 case B43legacy_CCK_RATE_2MB: 90 return 0x14; 91 case B43legacy_CCK_RATE_5MB: 92 return 0x37; 93 case B43legacy_CCK_RATE_11MB: 94 return 0x6E; 95 } 96 B43legacy_BUG_ON(1); 97 return 0; 98 } 99 100 u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate) 101 { 102 switch (bitrate) { 103 case B43legacy_OFDM_RATE_6MB: 104 return 0xB; 105 case B43legacy_OFDM_RATE_9MB: 106 return 0xF; 107 case B43legacy_OFDM_RATE_12MB: 108 return 0xA; 109 case B43legacy_OFDM_RATE_18MB: 110 return 0xE; 111 case B43legacy_OFDM_RATE_24MB: 112 return 0x9; 113 case B43legacy_OFDM_RATE_36MB: 114 return 0xD; 115 case B43legacy_OFDM_RATE_48MB: 116 return 0x8; 117 case B43legacy_OFDM_RATE_54MB: 118 return 0xC; 119 } 120 B43legacy_BUG_ON(1); 121 return 0; 122 } 123 124 void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp, 125 const u16 octets, const u8 bitrate) 126 { 127 __le32 *data = &(plcp->data); 128 __u8 *raw = plcp->raw; 129 130 if (b43legacy_is_ofdm_rate(bitrate)) { 131 u16 d; 132 133 d = b43legacy_plcp_get_ratecode_ofdm(bitrate); 134 B43legacy_WARN_ON(octets & 0xF000); 135 d |= (octets << 5); 136 *data = cpu_to_le32(d); 137 } else { 138 u32 plen; 139 140 plen = octets * 16 / bitrate; 141 if ((octets * 16 % bitrate) > 0) { 142 plen++; 143 if ((bitrate == B43legacy_CCK_RATE_11MB) 144 && ((octets * 8 % 11) < 4)) 145 raw[1] = 0x84; 146 else 147 raw[1] = 0x04; 148 } else 149 raw[1] = 0x04; 150 *data |= cpu_to_le32(plen << 16); 151 raw[0] = b43legacy_plcp_get_ratecode_cck(bitrate); 152 } 153 } 154 155 static u8 b43legacy_calc_fallback_rate(u8 bitrate) 156 { 157 switch (bitrate) { 158 case B43legacy_CCK_RATE_1MB: 159 return B43legacy_CCK_RATE_1MB; 160 case B43legacy_CCK_RATE_2MB: 161 return B43legacy_CCK_RATE_1MB; 162 case B43legacy_CCK_RATE_5MB: 163 return B43legacy_CCK_RATE_2MB; 164 case B43legacy_CCK_RATE_11MB: 165 return B43legacy_CCK_RATE_5MB; 166 case B43legacy_OFDM_RATE_6MB: 167 return B43legacy_CCK_RATE_5MB; 168 case B43legacy_OFDM_RATE_9MB: 169 return B43legacy_OFDM_RATE_6MB; 170 case B43legacy_OFDM_RATE_12MB: 171 return B43legacy_OFDM_RATE_9MB; 172 case B43legacy_OFDM_RATE_18MB: 173 return B43legacy_OFDM_RATE_12MB; 174 case B43legacy_OFDM_RATE_24MB: 175 return B43legacy_OFDM_RATE_18MB; 176 case B43legacy_OFDM_RATE_36MB: 177 return B43legacy_OFDM_RATE_24MB; 178 case B43legacy_OFDM_RATE_48MB: 179 return B43legacy_OFDM_RATE_36MB; 180 case B43legacy_OFDM_RATE_54MB: 181 return B43legacy_OFDM_RATE_48MB; 182 } 183 B43legacy_BUG_ON(1); 184 return 0; 185 } 186 187 static int generate_txhdr_fw3(struct b43legacy_wldev *dev, 188 struct b43legacy_txhdr_fw3 *txhdr, 189 const unsigned char *fragment_data, 190 unsigned int fragment_len, 191 struct ieee80211_tx_info *info, 192 u16 cookie) 193 { 194 const struct ieee80211_hdr *wlhdr; 195 int use_encryption = !!info->control.hw_key; 196 u8 rate; 197 struct ieee80211_rate *rate_fb; 198 int rate_ofdm; 199 int rate_fb_ofdm; 200 unsigned int plcp_fragment_len; 201 u32 mac_ctl = 0; 202 u16 phy_ctl = 0; 203 struct ieee80211_rate *tx_rate; 204 struct ieee80211_tx_rate *rates; 205 206 wlhdr = (const struct ieee80211_hdr *)fragment_data; 207 208 memset(txhdr, 0, sizeof(*txhdr)); 209 210 tx_rate = ieee80211_get_tx_rate(dev->wl->hw, info); 211 212 rate = tx_rate->hw_value; 213 rate_ofdm = b43legacy_is_ofdm_rate(rate); 214 rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : tx_rate; 215 rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb->hw_value); 216 217 txhdr->mac_frame_ctl = wlhdr->frame_control; 218 memcpy(txhdr->tx_receiver, wlhdr->addr1, ETH_ALEN); 219 220 /* Calculate duration for fallback rate */ 221 if ((rate_fb->hw_value == rate) || 222 (wlhdr->duration_id & cpu_to_le16(0x8000)) || 223 (wlhdr->duration_id == cpu_to_le16(0))) { 224 /* If the fallback rate equals the normal rate or the 225 * dur_id field contains an AID, CFP magic or 0, 226 * use the original dur_id field. */ 227 txhdr->dur_fb = wlhdr->duration_id; 228 } else { 229 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw, 230 info->control.vif, 231 info->band, 232 fragment_len, 233 rate_fb); 234 } 235 236 plcp_fragment_len = fragment_len + FCS_LEN; 237 if (use_encryption) { 238 u8 key_idx = info->control.hw_key->hw_key_idx; 239 struct b43legacy_key *key; 240 int wlhdr_len; 241 size_t iv_len; 242 243 B43legacy_WARN_ON(key_idx >= dev->max_nr_keys); 244 key = &(dev->key[key_idx]); 245 246 if (key->enabled) { 247 /* Hardware appends ICV. */ 248 plcp_fragment_len += info->control.hw_key->icv_len; 249 250 key_idx = b43legacy_kidx_to_fw(dev, key_idx); 251 mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) & 252 B43legacy_TX4_MAC_KEYIDX; 253 mac_ctl |= (key->algorithm << 254 B43legacy_TX4_MAC_KEYALG_SHIFT) & 255 B43legacy_TX4_MAC_KEYALG; 256 wlhdr_len = ieee80211_hdrlen(wlhdr->frame_control); 257 iv_len = min_t(size_t, info->control.hw_key->iv_len, 258 ARRAY_SIZE(txhdr->iv)); 259 memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len); 260 } else { 261 /* This key is invalid. This might only happen 262 * in a short timeframe after machine resume before 263 * we were able to reconfigure keys. 264 * Drop this packet completely. Do not transmit it 265 * unencrypted to avoid leaking information. */ 266 return -ENOKEY; 267 } 268 } 269 b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) 270 (&txhdr->plcp), plcp_fragment_len, 271 rate); 272 b43legacy_generate_plcp_hdr(&txhdr->plcp_fb, plcp_fragment_len, 273 rate_fb->hw_value); 274 275 /* PHY TX Control word */ 276 if (rate_ofdm) 277 phy_ctl |= B43legacy_TX4_PHY_ENC_OFDM; 278 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) 279 phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL; 280 phy_ctl |= B43legacy_TX4_PHY_ANTLAST; 281 282 /* MAC control */ 283 rates = info->control.rates; 284 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) 285 mac_ctl |= B43legacy_TX4_MAC_ACK; 286 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) 287 mac_ctl |= B43legacy_TX4_MAC_HWSEQ; 288 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) 289 mac_ctl |= B43legacy_TX4_MAC_STMSDU; 290 if (rate_fb_ofdm) 291 mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM; 292 293 /* Overwrite rates[0].count to make the retry calculation 294 * in the tx status easier. need the actual retry limit to 295 * detect whether the fallback rate was used. 296 */ 297 if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || 298 (rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) { 299 rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count; 300 mac_ctl |= B43legacy_TX4_MAC_LONGFRAME; 301 } else { 302 rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count; 303 } 304 305 /* Generate the RTS or CTS-to-self frame */ 306 if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || 307 (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) { 308 unsigned int len; 309 struct ieee80211_hdr *hdr; 310 int rts_rate; 311 int rts_rate_fb; 312 int rts_rate_fb_ofdm; 313 314 rts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info)->hw_value; 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 (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { 321 ieee80211_ctstoself_get(dev->wl->hw, 322 info->control.vif, 323 fragment_data, 324 fragment_len, info, 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 info->control.vif, 332 fragment_data, fragment_len, info, 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(&txhdr->rts_plcp_fb, 343 len, rts_rate_fb); 344 hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame); 345 txhdr->rts_dur_fb = hdr->duration_id; 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); 354 355 return 0; 356 } 357 358 int b43legacy_generate_txhdr(struct b43legacy_wldev *dev, 359 u8 *txhdr, 360 const unsigned char *fragment_data, 361 unsigned int fragment_len, 362 struct ieee80211_tx_info *info, 363 u16 cookie) 364 { 365 return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr, 366 fragment_data, fragment_len, 367 info, cookie); 368 } 369 370 static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev, 371 u8 in_rssi, int ofdm, 372 int adjust_2053, int adjust_2050) 373 { 374 struct b43legacy_phy *phy = &dev->phy; 375 s32 tmp; 376 377 switch (phy->radio_ver) { 378 case 0x2050: 379 if (ofdm) { 380 tmp = in_rssi; 381 if (tmp > 127) 382 tmp -= 256; 383 tmp *= 73; 384 tmp /= 64; 385 if (adjust_2050) 386 tmp += 25; 387 else 388 tmp -= 3; 389 } else { 390 if (dev->dev->bus->sprom.boardflags_lo 391 & B43legacy_BFL_RSSI) { 392 if (in_rssi > 63) 393 in_rssi = 63; 394 tmp = phy->nrssi_lt[in_rssi]; 395 tmp = 31 - tmp; 396 tmp *= -131; 397 tmp /= 128; 398 tmp -= 57; 399 } else { 400 tmp = in_rssi; 401 tmp = 31 - tmp; 402 tmp *= -149; 403 tmp /= 128; 404 tmp -= 68; 405 } 406 if (phy->type == B43legacy_PHYTYPE_G && 407 adjust_2050) 408 tmp += 25; 409 } 410 break; 411 case 0x2060: 412 if (in_rssi > 127) 413 tmp = in_rssi - 256; 414 else 415 tmp = in_rssi; 416 break; 417 default: 418 tmp = in_rssi; 419 tmp -= 11; 420 tmp *= 103; 421 tmp /= 64; 422 if (adjust_2053) 423 tmp -= 109; 424 else 425 tmp -= 83; 426 } 427 428 return (s8)tmp; 429 } 430 431 void b43legacy_rx(struct b43legacy_wldev *dev, 432 struct sk_buff *skb, 433 const void *_rxhdr) 434 { 435 struct ieee80211_rx_status status; 436 struct b43legacy_plcp_hdr6 *plcp; 437 struct ieee80211_hdr *wlhdr; 438 const struct b43legacy_rxhdr_fw3 *rxhdr = _rxhdr; 439 __le16 fctl; 440 u16 phystat0; 441 u16 phystat3; 442 u16 chanstat; 443 u16 mactime; 444 u32 macstat; 445 u16 chanid; 446 u8 jssi; 447 int padding; 448 449 memset(&status, 0, sizeof(status)); 450 451 /* Get metadata about the frame from the header. */ 452 phystat0 = le16_to_cpu(rxhdr->phy_status0); 453 phystat3 = le16_to_cpu(rxhdr->phy_status3); 454 jssi = rxhdr->jssi; 455 macstat = le16_to_cpu(rxhdr->mac_status); 456 mactime = le16_to_cpu(rxhdr->mac_time); 457 chanstat = le16_to_cpu(rxhdr->channel); 458 459 if (macstat & B43legacy_RX_MAC_FCSERR) 460 dev->wl->ieee_stats.dot11FCSErrorCount++; 461 462 /* Skip PLCP and padding */ 463 padding = (macstat & B43legacy_RX_MAC_PADDING) ? 2 : 0; 464 if (unlikely(skb->len < (sizeof(struct b43legacy_plcp_hdr6) + 465 padding))) { 466 b43legacydbg(dev->wl, "RX: Packet size underrun (1)\n"); 467 goto drop; 468 } 469 plcp = (struct b43legacy_plcp_hdr6 *)(skb->data + padding); 470 skb_pull(skb, sizeof(struct b43legacy_plcp_hdr6) + padding); 471 /* The skb contains the Wireless Header + payload data now */ 472 if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) { 473 b43legacydbg(dev->wl, "RX: Packet size underrun (2)\n"); 474 goto drop; 475 } 476 wlhdr = (struct ieee80211_hdr *)(skb->data); 477 fctl = wlhdr->frame_control; 478 479 if ((macstat & B43legacy_RX_MAC_DEC) && 480 !(macstat & B43legacy_RX_MAC_DECERR)) { 481 unsigned int keyidx; 482 int wlhdr_len; 483 int iv_len; 484 int icv_len; 485 486 keyidx = ((macstat & B43legacy_RX_MAC_KEYIDX) 487 >> B43legacy_RX_MAC_KEYIDX_SHIFT); 488 /* We must adjust the key index here. We want the "physical" 489 * key index, but the ucode passed it slightly different. 490 */ 491 keyidx = b43legacy_kidx_to_raw(dev, keyidx); 492 B43legacy_WARN_ON(keyidx >= dev->max_nr_keys); 493 494 if (dev->key[keyidx].algorithm != B43legacy_SEC_ALGO_NONE) { 495 /* Remove PROTECTED flag to mark it as decrypted. */ 496 B43legacy_WARN_ON(!ieee80211_has_protected(fctl)); 497 fctl &= ~cpu_to_le16(IEEE80211_FCTL_PROTECTED); 498 wlhdr->frame_control = fctl; 499 500 wlhdr_len = ieee80211_hdrlen(fctl); 501 if (unlikely(skb->len < (wlhdr_len + 3))) { 502 b43legacydbg(dev->wl, "RX: Packet size" 503 " underrun3\n"); 504 goto drop; 505 } 506 if (skb->data[wlhdr_len + 3] & (1 << 5)) { 507 /* The Ext-IV Bit is set in the "KeyID" 508 * octet of the IV. 509 */ 510 iv_len = 8; 511 icv_len = 8; 512 } else { 513 iv_len = 4; 514 icv_len = 4; 515 } 516 if (unlikely(skb->len < (wlhdr_len + iv_len + 517 icv_len))) { 518 b43legacydbg(dev->wl, "RX: Packet size" 519 " underrun4\n"); 520 goto drop; 521 } 522 /* Remove the IV */ 523 memmove(skb->data + iv_len, skb->data, wlhdr_len); 524 skb_pull(skb, iv_len); 525 /* Remove the ICV */ 526 skb_trim(skb, skb->len - icv_len); 527 528 status.flag |= RX_FLAG_DECRYPTED; 529 } 530 } 531 532 status.signal = b43legacy_rssi_postprocess(dev, jssi, 533 (phystat0 & B43legacy_RX_PHYST0_OFDM), 534 (phystat0 & B43legacy_RX_PHYST0_GAINCTL), 535 (phystat3 & B43legacy_RX_PHYST3_TRSTATE)); 536 /* change to support A PHY */ 537 if (phystat0 & B43legacy_RX_PHYST0_OFDM) 538 status.rate_idx = b43legacy_plcp_get_bitrate_idx_ofdm(plcp, false); 539 else 540 status.rate_idx = b43legacy_plcp_get_bitrate_idx_cck(plcp); 541 status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT); 542 543 /* 544 * All frames on monitor interfaces and beacons always need a full 545 * 64-bit timestamp. Monitor interfaces need it for diagnostic 546 * purposes and beacons for IBSS merging. 547 * This code assumes we get to process the packet within 16 bits 548 * of timestamp, i.e. about 65 milliseconds after the PHY received 549 * the first symbol. 550 */ 551 if (ieee80211_is_beacon(fctl) || 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_MACTIME_START; 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 case B43legacy_PHYTYPE_G: 568 status.band = IEEE80211_BAND_2GHZ; 569 status.freq = chanid + 2400; 570 break; 571 default: 572 b43legacywarn(dev->wl, "Unexpected value for chanstat (0x%X)\n", 573 chanstat); 574 } 575 576 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 577 ieee80211_rx_irqsafe(dev->wl->hw, skb); 578 579 return; 580 drop: 581 b43legacydbg(dev->wl, "RX: Packet dropped\n"); 582 dev_kfree_skb_any(skb); 583 } 584 585 void b43legacy_handle_txstatus(struct b43legacy_wldev *dev, 586 const struct b43legacy_txstatus *status) 587 { 588 b43legacy_debugfs_log_txstat(dev, status); 589 590 if (status->intermediate) 591 return; 592 if (status->for_ampdu) 593 return; 594 if (!status->acked) 595 dev->wl->ieee_stats.dot11ACKFailureCount++; 596 if (status->rts_count) { 597 if (status->rts_count == 0xF) /* FIXME */ 598 dev->wl->ieee_stats.dot11RTSFailureCount++; 599 else 600 dev->wl->ieee_stats.dot11RTSSuccessCount++; 601 } 602 603 if (b43legacy_using_pio(dev)) 604 b43legacy_pio_handle_txstatus(dev, status); 605 else 606 b43legacy_dma_handle_txstatus(dev, status); 607 } 608 609 /* Handle TX status report as received through DMA/PIO queues */ 610 void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev, 611 const struct b43legacy_hwtxstatus *hw) 612 { 613 struct b43legacy_txstatus status; 614 u8 tmp; 615 616 status.cookie = le16_to_cpu(hw->cookie); 617 status.seq = le16_to_cpu(hw->seq); 618 status.phy_stat = hw->phy_stat; 619 tmp = hw->count; 620 status.frame_count = (tmp >> 4); 621 status.rts_count = (tmp & 0x0F); 622 tmp = hw->flags << 1; 623 status.supp_reason = ((tmp & 0x1C) >> 2); 624 status.pm_indicated = !!(tmp & 0x80); 625 status.intermediate = !!(tmp & 0x40); 626 status.for_ampdu = !!(tmp & 0x20); 627 status.acked = !!(tmp & 0x02); 628 629 b43legacy_handle_txstatus(dev, &status); 630 } 631 632 /* Stop any TX operation on the device (suspend the hardware queues) */ 633 void b43legacy_tx_suspend(struct b43legacy_wldev *dev) 634 { 635 if (b43legacy_using_pio(dev)) 636 b43legacy_pio_freeze_txqueues(dev); 637 else 638 b43legacy_dma_tx_suspend(dev); 639 } 640 641 /* Resume any TX operation on the device (resume the hardware queues) */ 642 void b43legacy_tx_resume(struct b43legacy_wldev *dev) 643 { 644 if (b43legacy_using_pio(dev)) 645 b43legacy_pio_thaw_txqueues(dev); 646 else 647 b43legacy_dma_tx_resume(dev); 648 } 649 650 /* Initialize the QoS parameters */ 651 void b43legacy_qos_init(struct b43legacy_wldev *dev) 652 { 653 /* FIXME: This function must probably be called from the mac80211 654 * config callback. */ 655 return; 656 657 b43legacy_hf_write(dev, b43legacy_hf_read(dev) | B43legacy_HF_EDCF); 658 /* FIXME kill magic */ 659 b43legacy_write16(dev, 0x688, 660 b43legacy_read16(dev, 0x688) | 0x4); 661 662 663 /*TODO: We might need some stack support here to get the values. */ 664 } 665