git.oblomov.eu Git - linux-2.6/blob - 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 <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
  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
  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 /* Generate a TX data header. */
 181 int 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)
 187 {
 188         struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
 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,
 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 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
 241                 if (unlikely(!key->keyconf)) {
 242                         /* This key is invalid. This might only happen
 243                          * in a short timeframe after machine resume before
 244                          * we were able to reconfigure keys.
 245                          * Drop this packet completely. Do not transmit it
 246                          * unencrypted to avoid leaking information. */
 247                         return -ENOKEY;
 248                 }
 249
 250                 /* Hardware appends ICV. */
 251                 plcp_fragment_len += txctl->icv_len;
 252
 253                 key_idx = b43_kidx_to_fw(dev, key_idx);
 254                 mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
 255                            B43_TXH_MAC_KEYIDX;
 256                 mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
 257                            B43_TXH_MAC_KEYALG;
 258                 wlhdr_len = ieee80211_get_hdrlen(fctl);
 259                 iv_len = min((size_t) txctl->iv_len,
 260                              ARRAY_SIZE(txhdr->iv));
 261                 memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
 262         }
 263         if (b43_is_old_txhdr_format(dev)) {
 264                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp),
 265                                       plcp_fragment_len, rate);
 266         } else {
 267                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp),
 268                                       plcp_fragment_len, rate);
 269         }
 270         b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
 271                               plcp_fragment_len, rate_fb);
 272
 273         /* Extra Frame Types */
 274         if (rate_fb_ofdm)
 275                 extra_ft |= B43_TXH_EFT_FB_OFDM;
 276         else
 277                 extra_ft |= B43_TXH_EFT_FB_CCK;
 278
 279         /* Set channel radio code. Note that the micrcode ORs 0x100 to
 280          * this value before comparing it to the value in SHM, if this
 281          * is a 5Ghz packet.
 282          */
 283         txhdr->chan_radio_code = phy->channel;
 284
 285         /* PHY TX Control word */
 286         if (rate_ofdm)
 287                 phy_ctl |= B43_TXH_PHY_ENC_OFDM;
 288         else
 289                 phy_ctl |= B43_TXH_PHY_ENC_CCK;
 290         if (dev->short_preamble)
 291                 phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
 292
 293         switch (b43_ieee80211_antenna_sanitize(dev, txctl->antenna_sel_tx)) {
 294         case 0: /* Default */
 295                 phy_ctl |= B43_TXH_PHY_ANT01AUTO;
 296                 break;
 297         case 1: /* Antenna 0 */
 298                 phy_ctl |= B43_TXH_PHY_ANT0;
 299                 break;
 300         case 2: /* Antenna 1 */
 301                 phy_ctl |= B43_TXH_PHY_ANT1;
 302                 break;
 303         case 3: /* Antenna 2 */
 304                 phy_ctl |= B43_TXH_PHY_ANT2;
 305                 break;
 306         case 4: /* Antenna 3 */
 307                 phy_ctl |= B43_TXH_PHY_ANT3;
 308                 break;
 309         default:
 310                 B43_WARN_ON(1);
 311         }
 312
 313         /* MAC control */
 314         if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
 315                 mac_ctl |= B43_TXH_MAC_ACK;
 316         if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
 317               ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
 318                 mac_ctl |= B43_TXH_MAC_HWSEQ;
 319         if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
 320                 mac_ctl |= B43_TXH_MAC_STMSDU;
 321         if (phy->type == B43_PHYTYPE_A)
 322                 mac_ctl |= B43_TXH_MAC_5GHZ;
 323         if (txctl->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
 324                 mac_ctl |= B43_TXH_MAC_LONGFRAME;
 325
 326         /* Generate the RTS or CTS-to-self frame */
 327         if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
 328             (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
 329                 unsigned int len;
 330                 struct ieee80211_hdr *hdr;
 331                 int rts_rate, rts_rate_fb;
 332                 int rts_rate_ofdm, rts_rate_fb_ofdm;
 333                 struct b43_plcp_hdr6 *plcp;
 334
 335                 rts_rate = txctl->rts_cts_rate;
 336                 rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
 337                 rts_rate_fb = b43_calc_fallback_rate(rts_rate);
 338                 rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
 339
 340                 if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 341                         struct ieee80211_cts *cts;
 342
 343                         if (b43_is_old_txhdr_format(dev)) {
 344                                 cts = (struct ieee80211_cts *)
 345                                         (txhdr->old_format.rts_frame);
 346                         } else {
 347                                 cts = (struct ieee80211_cts *)
 348                                         (txhdr->new_format.rts_frame);
 349                         }
 350                         ieee80211_ctstoself_get(dev->wl->hw, txctl->vif,
 351                                                 fragment_data, fragment_len,
 352                                                 txctl, cts);
 353                         mac_ctl |= B43_TXH_MAC_SENDCTS;
 354                         len = sizeof(struct ieee80211_cts);
 355                 } else {
 356                         struct ieee80211_rts *rts;
 357
 358                         if (b43_is_old_txhdr_format(dev)) {
 359                                 rts = (struct ieee80211_rts *)
 360                                         (txhdr->old_format.rts_frame);
 361                         } else {
 362                                 rts = (struct ieee80211_rts *)
 363                                         (txhdr->new_format.rts_frame);
 364                         }
 365                         ieee80211_rts_get(dev->wl->hw, txctl->vif,
 366                                           fragment_data, fragment_len,
 367                                           txctl, rts);
 368                         mac_ctl |= B43_TXH_MAC_SENDRTS;
 369                         len = sizeof(struct ieee80211_rts);
 370                 }
 371                 len += FCS_LEN;
 372
 373                 /* Generate the PLCP headers for the RTS/CTS frame */
 374                 if (b43_is_old_txhdr_format(dev))
 375                         plcp = &txhdr->old_format.rts_plcp;
 376                 else
 377                         plcp = &txhdr->new_format.rts_plcp;
 378                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
 379                                       len, rts_rate);
 380                 plcp = &txhdr->rts_plcp_fb;
 381                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
 382                                       len, rts_rate_fb);
 383
 384                 if (b43_is_old_txhdr_format(dev)) {
 385                         hdr = (struct ieee80211_hdr *)
 386                                 (&txhdr->old_format.rts_frame);
 387                 } else {
 388                         hdr = (struct ieee80211_hdr *)
 389                                 (&txhdr->new_format.rts_frame);
 390                 }
 391                 txhdr->rts_dur_fb = hdr->duration_id;
 392
 393                 if (rts_rate_ofdm) {
 394                         extra_ft |= B43_TXH_EFT_RTS_OFDM;
 395                         txhdr->phy_rate_rts =
 396                             b43_plcp_get_ratecode_ofdm(rts_rate);
 397                 } else {
 398                         extra_ft |= B43_TXH_EFT_RTS_CCK;
 399                         txhdr->phy_rate_rts =
 400                             b43_plcp_get_ratecode_cck(rts_rate);
 401                 }
 402                 if (rts_rate_fb_ofdm)
 403                         extra_ft |= B43_TXH_EFT_RTSFB_OFDM;
 404                 else
 405                         extra_ft |= B43_TXH_EFT_RTSFB_CCK;
 406         }
 407
 408         /* Magic cookie */
 409         if (b43_is_old_txhdr_format(dev))
 410                 txhdr->old_format.cookie = cpu_to_le16(cookie);
 411         else
 412                 txhdr->new_format.cookie = cpu_to_le16(cookie);
 413
 414         /* Apply the bitfields */
 415         txhdr->mac_ctl = cpu_to_le32(mac_ctl);
 416         txhdr->phy_ctl = cpu_to_le16(phy_ctl);
 417         txhdr->extra_ft = extra_ft;
 418
 419         return 0;
 420 }
 421
 422 static s8 b43_rssi_postprocess(struct b43_wldev *dev,
 423                                u8 in_rssi, int ofdm,
 424                                int adjust_2053, int adjust_2050)
 425 {
 426         struct b43_phy *phy = &dev->phy;
 427         s32 tmp;
 428
 429         switch (phy->radio_ver) {
 430         case 0x2050:
 431                 if (ofdm) {
 432                         tmp = in_rssi;
 433                         if (tmp > 127)
 434                                 tmp -= 256;
 435                         tmp *= 73;
 436                         tmp /= 64;
 437                         if (adjust_2050)
 438                                 tmp += 25;
 439                         else
 440                                 tmp -= 3;
 441                 } else {
 442                         if (dev->dev->bus->sprom.
 443                             boardflags_lo & B43_BFL_RSSI) {
 444                                 if (in_rssi > 63)
 445                                         in_rssi = 63;
 446                                 tmp = phy->nrssi_lt[in_rssi];
 447                                 tmp = 31 - tmp;
 448                                 tmp *= -131;
 449                                 tmp /= 128;
 450                                 tmp -= 57;
 451                         } else {
 452                                 tmp = in_rssi;
 453                                 tmp = 31 - tmp;
 454                                 tmp *= -149;
 455                                 tmp /= 128;
 456                                 tmp -= 68;
 457                         }
 458                         if (phy->type == B43_PHYTYPE_G && adjust_2050)
 459                                 tmp += 25;
 460                 }
 461                 break;
 462         case 0x2060:
 463                 if (in_rssi > 127)
 464                         tmp = in_rssi - 256;
 465                 else
 466                         tmp = in_rssi;
 467                 break;
 468         default:
 469                 tmp = in_rssi;
 470                 tmp -= 11;
 471                 tmp *= 103;
 472                 tmp /= 64;
 473                 if (adjust_2053)
 474                         tmp -= 109;
 475                 else
 476                         tmp -= 83;
 477         }
 478
 479         return (s8) tmp;
 480 }
 481
 482 //TODO
 483 #if 0
 484 static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
 485 {
 486         struct b43_phy *phy = &dev->phy;
 487         s8 ret;
 488
 489         if (phy->type == B43_PHYTYPE_A) {
 490                 //TODO: Incomplete specs.
 491                 ret = 0;
 492         } else
 493                 ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
 494
 495         return ret;
 496 }
 497 #endif
 498
 499 void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
 500 {
 501         struct ieee80211_rx_status status;
 502         struct b43_plcp_hdr6 *plcp;
 503         struct ieee80211_hdr *wlhdr;
 504         const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
 505         u16 fctl;
 506         u16 phystat0, phystat3, chanstat, mactime;
 507         u32 macstat;
 508         u16 chanid;
 509         u8 jssi;
 510         int padding;
 511
 512         memset(&status, 0, sizeof(status));
 513
 514         /* Get metadata about the frame from the header. */
 515         phystat0 = le16_to_cpu(rxhdr->phy_status0);
 516         phystat3 = le16_to_cpu(rxhdr->phy_status3);
 517         jssi = rxhdr->jssi;
 518         macstat = le32_to_cpu(rxhdr->mac_status);
 519         mactime = le16_to_cpu(rxhdr->mac_time);
 520         chanstat = le16_to_cpu(rxhdr->channel);
 521
 522         if (macstat & B43_RX_MAC_FCSERR)
 523                 dev->wl->ieee_stats.dot11FCSErrorCount++;
 524         if (macstat & B43_RX_MAC_DECERR) {
 525                 /* Decryption with the given key failed.
 526                  * Drop the packet. We also won't be able to decrypt it with
 527                  * the key in software. */
 528                 goto drop;
 529         }
 530
 531         /* Skip PLCP and padding */
 532         padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
 533         if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
 534                 b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
 535                 goto drop;
 536         }
 537         plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
 538         skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
 539         /* The skb contains the Wireless Header + payload data now */
 540         if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */  + FCS_LEN))) {
 541                 b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
 542                 goto drop;
 543         }
 544         wlhdr = (struct ieee80211_hdr *)(skb->data);
 545         fctl = le16_to_cpu(wlhdr->frame_control);
 546
 547         if (macstat & B43_RX_MAC_DEC) {
 548                 unsigned int keyidx;
 549                 int wlhdr_len;
 550
 551                 keyidx = ((macstat & B43_RX_MAC_KEYIDX)
 552                           >> B43_RX_MAC_KEYIDX_SHIFT);
 553                 /* We must adjust the key index here. We want the "physical"
 554                  * key index, but the ucode passed it slightly different.
 555                  */
 556                 keyidx = b43_kidx_to_raw(dev, keyidx);
 557                 B43_WARN_ON(keyidx >= dev->max_nr_keys);
 558
 559                 if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
 560                         wlhdr_len = ieee80211_get_hdrlen(fctl);
 561                         if (unlikely(skb->len < (wlhdr_len + 3))) {
 562                                 b43dbg(dev->wl,
 563                                        "RX: Packet size underrun (3)\n");
 564                                 goto drop;
 565                         }
 566                         status.flag |= RX_FLAG_DECRYPTED;
 567                 }
 568         }
 569
 570         status.ssi = b43_rssi_postprocess(dev, jssi,
 571                                           (phystat0 & B43_RX_PHYST0_OFDM),
 572                                           (phystat0 & B43_RX_PHYST0_GAINCTL),
 573                                           (phystat3 & B43_RX_PHYST3_TRSTATE));
 574         status.noise = dev->stats.link_noise;
 575         /* the next line looks wrong, but is what mac80211 wants */
 576         status.signal = (jssi * 100) / B43_RX_MAX_SSI;
 577         if (phystat0 & B43_RX_PHYST0_OFDM)
 578                 status.rate = b43_plcp_get_bitrate_ofdm(plcp);
 579         else
 580                 status.rate = b43_plcp_get_bitrate_cck(plcp);
 581         status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
 582
 583         /*
 584          * If monitors are present get full 64-bit timestamp. This
 585          * code assumes we get to process the packet within 16 bits
 586          * of timestamp, i.e. about 65 milliseconds after the PHY
 587          * received the first symbol.
 588          */
 589         if (dev->wl->radiotap_enabled) {
 590                 u16 low_mactime_now;
 591
 592                 b43_tsf_read(dev, &status.mactime);
 593                 low_mactime_now = status.mactime;
 594                 status.mactime = status.mactime & ~0xFFFFULL;
 595                 status.mactime += mactime;
 596                 if (low_mactime_now <= mactime)
 597                         status.mactime -= 0x10000;
 598                 status.flag |= RX_FLAG_TSFT;
 599         }
 600
 601         chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
 602         switch (chanstat & B43_RX_CHAN_PHYTYPE) {
 603         case B43_PHYTYPE_A:
 604                 status.phymode = MODE_IEEE80211A;
 605                 B43_WARN_ON(1);
 606                 /* FIXME: We don't really know which value the "chanid" contains.
 607                  *        So the following assignment might be wrong. */
 608                 status.channel = chanid;
 609                 status.freq = b43_channel_to_freq_5ghz(status.channel);
 610                 break;
 611         case B43_PHYTYPE_G:
 612                 status.phymode = MODE_IEEE80211G;
 613                 /* chanid is the radio channel cookie value as used
 614                  * to tune the radio. */
 615                 status.freq = chanid + 2400;
 616                 status.channel = b43_freq_to_channel_2ghz(status.freq);
 617                 break;
 618         case B43_PHYTYPE_N:
 619                 status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/;
 620                 /* chanid is the SHM channel cookie. Which is the plain
 621                  * channel number in b43. */
 622                 status.channel = chanid;
 623                 if (chanstat & B43_RX_CHAN_5GHZ)
 624                         status.freq = b43_freq_to_channel_5ghz(status.freq);
 625                 else
 626                         status.freq = b43_freq_to_channel_2ghz(status.freq);
 627                 break;
 628         default:
 629                 B43_WARN_ON(1);
 630                 goto drop;
 631         }
 632
 633         dev->stats.last_rx = jiffies;
 634         ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
 635
 636         return;
 637 drop:
 638         b43dbg(dev->wl, "RX: Packet dropped\n");
 639         dev_kfree_skb_any(skb);
 640 }
 641
 642 void b43_handle_txstatus(struct b43_wldev *dev,
 643                          const struct b43_txstatus *status)
 644 {
 645         b43_debugfs_log_txstat(dev, status);
 646
 647         if (status->intermediate)
 648                 return;
 649         if (status->for_ampdu)
 650                 return;
 651         if (!status->acked)
 652                 dev->wl->ieee_stats.dot11ACKFailureCount++;
 653         if (status->rts_count) {
 654                 if (status->rts_count == 0xF)   //FIXME
 655                         dev->wl->ieee_stats.dot11RTSFailureCount++;
 656                 else
 657                         dev->wl->ieee_stats.dot11RTSSuccessCount++;
 658         }
 659
 660         b43_dma_handle_txstatus(dev, status);
 661 }
 662
 663 /* Handle TX status report as received through DMA/PIO queues */
 664 void b43_handle_hwtxstatus(struct b43_wldev *dev,
 665                            const struct b43_hwtxstatus *hw)
 666 {
 667         struct b43_txstatus status;
 668         u8 tmp;
 669
 670         status.cookie = le16_to_cpu(hw->cookie);
 671         status.seq = le16_to_cpu(hw->seq);
 672         status.phy_stat = hw->phy_stat;
 673         tmp = hw->count;
 674         status.frame_count = (tmp >> 4);
 675         status.rts_count = (tmp & 0x0F);
 676         tmp = hw->flags;
 677         status.supp_reason = ((tmp & 0x1C) >> 2);
 678         status.pm_indicated = !!(tmp & 0x80);
 679         status.intermediate = !!(tmp & 0x40);
 680         status.for_ampdu = !!(tmp & 0x20);
 681         status.acked = !!(tmp & 0x02);
 682
 683         b43_handle_txstatus(dev, &status);
 684 }
 685
 686 /* Stop any TX operation on the device (suspend the hardware queues) */
 687 void b43_tx_suspend(struct b43_wldev *dev)
 688 {
 689         b43_dma_tx_suspend(dev);
 690 }
 691
 692 /* Resume any TX operation on the device (resume the hardware queues) */
 693 void b43_tx_resume(struct b43_wldev *dev)
 694 {
 695         b43_dma_tx_resume(dev);
 696 }
 697
 698 #if 0
 699 static void upload_qos_parms(struct b43_wldev *dev,
 700                              const u16 * parms, u16 offset)
 701 {
 702         int i;
 703
 704         for (i = 0; i < B43_NR_QOSPARMS; i++) {
 705                 b43_shm_write16(dev, B43_SHM_SHARED,
 706                                 offset + (i * 2), parms[i]);
 707         }
 708 }
 709 #endif
 710
 711 /* Initialize the QoS parameters */
 712 void b43_qos_init(struct b43_wldev *dev)
 713 {
 714         /* FIXME: This function must probably be called from the mac80211
 715          * config callback. */
 716         return;
 717
 718         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
 719         //FIXME kill magic
 720         b43_write16(dev, 0x688, b43_read16(dev, 0x688) | 0x4);
 721
 722         /*TODO: We might need some stack support here to get the values. */
 723 }