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