package/b43/src/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 <st3@riseup.net>
   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 #include "pio.h"
  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                 *data = b43_plcp_get_ratecode_ofdm(bitrate);
 125                 B43_WARN_ON(octets & 0xF000);
 126                 *data |= (octets << 5);
 127                 *data = cpu_to_le32(*data);
 128         } else {
 129                 u32 plen;
 130
 131                 plen = octets * 16 / bitrate;
 132                 if ((octets * 16 % bitrate) > 0) {
 133                         plen++;
 134                         if ((bitrate == B43_CCK_RATE_11MB)
 135                             && ((octets * 8 % 11) < 4)) {
 136                                 raw[1] = 0x84;
 137                         } else
 138                                 raw[1] = 0x04;
 139                 } else
 140                         raw[1] = 0x04;
 141                 *data |= cpu_to_le32(plen << 16);
 142                 raw[0] = b43_plcp_get_ratecode_cck(bitrate);
 143         }
 144 }
 145
 146 static u8 b43_calc_fallback_rate(u8 bitrate)
 147 {
 148         switch (bitrate) {
 149         case B43_CCK_RATE_1MB:
 150                 return B43_CCK_RATE_1MB;
 151         case B43_CCK_RATE_2MB:
 152                 return B43_CCK_RATE_1MB;
 153         case B43_CCK_RATE_5MB:
 154                 return B43_CCK_RATE_2MB;
 155         case B43_CCK_RATE_11MB:
 156                 return B43_CCK_RATE_5MB;
 157         case B43_OFDM_RATE_6MB:
 158                 return B43_CCK_RATE_5MB;
 159         case B43_OFDM_RATE_9MB:
 160                 return B43_OFDM_RATE_6MB;
 161         case B43_OFDM_RATE_12MB:
 162                 return B43_OFDM_RATE_9MB;
 163         case B43_OFDM_RATE_18MB:
 164                 return B43_OFDM_RATE_12MB;
 165         case B43_OFDM_RATE_24MB:
 166                 return B43_OFDM_RATE_18MB;
 167         case B43_OFDM_RATE_36MB:
 168                 return B43_OFDM_RATE_24MB;
 169         case B43_OFDM_RATE_48MB:
 170                 return B43_OFDM_RATE_36MB;
 171         case B43_OFDM_RATE_54MB:
 172                 return B43_OFDM_RATE_48MB;
 173         }
 174         B43_WARN_ON(1);
 175         return 0;
 176 }
 177
 178 static void generate_txhdr_fw4(struct b43_wldev *dev,
 179                                struct b43_txhdr_fw4 *txhdr,
 180                                const unsigned char *fragment_data,
 181                                unsigned int fragment_len,
 182                                const struct ieee80211_tx_control *txctl,
 183                                u16 cookie)
 184 {
 185         const struct b43_phy *phy = &dev->phy;
 186         const struct ieee80211_hdr *wlhdr =
 187             (const struct ieee80211_hdr *)fragment_data;
 188         int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
 189         u16 fctl = le16_to_cpu(wlhdr->frame_control);
 190         u8 rate, rate_fb;
 191         int rate_ofdm, rate_fb_ofdm;
 192         unsigned int plcp_fragment_len;
 193         u32 mac_ctl = 0;
 194         u16 phy_ctl = 0;
 195         u8 extra_ft = 0;
 196
 197         memset(txhdr, 0, sizeof(*txhdr));
 198
 199         rate = txctl->tx_rate;
 200         rate_ofdm = b43_is_ofdm_rate(rate);
 201         rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
 202         rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
 203
 204         if (rate_ofdm)
 205                 txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
 206         else
 207                 txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
 208         txhdr->mac_frame_ctl = wlhdr->frame_control;
 209         memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
 210
 211         /* Calculate duration for fallback rate */
 212         if ((rate_fb == rate) ||
 213             (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
 214             (wlhdr->duration_id == cpu_to_le16(0))) {
 215                 /* If the fallback rate equals the normal rate or the
 216                  * dur_id field contains an AID, CFP magic or 0,
 217                  * use the original dur_id field. */
 218                 txhdr->dur_fb = wlhdr->duration_id;
 219         } else {
 220                 int fbrate_base100kbps = B43_RATE_TO_BASE100KBPS(rate_fb);
 221                 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
 222                                                                  dev->wl->if_id,
 223                                                                  fragment_len,
 224                                                                  fbrate_base100kbps);
 225         }
 226
 227         plcp_fragment_len = fragment_len + FCS_LEN;
 228         if (use_encryption) {
 229                 u8 key_idx = (u16) (txctl->key_idx);
 230                 struct b43_key *key;
 231                 int wlhdr_len;
 232                 size_t iv_len;
 233
 234                 B43_WARN_ON(key_idx >= dev->max_nr_keys);
 235                 key = &(dev->key[key_idx]);
 236                 B43_WARN_ON(!key->keyconf);
 237
 238                 /* Hardware appends ICV. */
 239                 plcp_fragment_len += txctl->icv_len;
 240
 241                 key_idx = b43_kidx_to_fw(dev, key_idx);
 242                 mac_ctl |= (key_idx << B43_TX4_MAC_KEYIDX_SHIFT) &
 243                            B43_TX4_MAC_KEYIDX;
 244                 mac_ctl |= (key->algorithm << B43_TX4_MAC_KEYALG_SHIFT) &
 245                            B43_TX4_MAC_KEYALG;
 246                 wlhdr_len = ieee80211_get_hdrlen(fctl);
 247                 iv_len = min((size_t) txctl->iv_len,
 248                              ARRAY_SIZE(txhdr->iv));
 249                 memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
 250         }
 251         b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp),
 252                               plcp_fragment_len, rate);
 253         b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
 254                               plcp_fragment_len, rate_fb);
 255
 256         /* Extra Frame Types */
 257         if (rate_fb_ofdm)
 258                 extra_ft |= B43_TX4_EFT_FBOFDM;
 259
 260         /* Set channel radio code. Note that the micrcode ORs 0x100 to
 261          * this value before comparing it to the value in SHM, if this
 262          * is a 5Ghz packet.
 263          */
 264         txhdr->chan_radio_code = phy->channel;
 265
 266         /* PHY TX Control word */
 267         if (rate_ofdm)
 268                 phy_ctl |= B43_TX4_PHY_OFDM;
 269         if (dev->short_preamble)
 270                 phy_ctl |= B43_TX4_PHY_SHORTPRMBL;
 271         switch (txctl->antenna_sel_tx) {
 272         case 0:
 273                 phy_ctl |= B43_TX4_PHY_ANTLAST;
 274                 break;
 275         case 1:
 276                 phy_ctl |= B43_TX4_PHY_ANT0;
 277                 break;
 278         case 2:
 279                 phy_ctl |= B43_TX4_PHY_ANT1;
 280                 break;
 281         default:
 282                 B43_WARN_ON(1);
 283         }
 284
 285         /* MAC control */
 286         if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
 287                 mac_ctl |= B43_TX4_MAC_ACK;
 288         if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
 289               ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
 290                 mac_ctl |= B43_TX4_MAC_HWSEQ;
 291         if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
 292                 mac_ctl |= B43_TX4_MAC_STMSDU;
 293         if (phy->type == B43_PHYTYPE_A)
 294                 mac_ctl |= B43_TX4_MAC_5GHZ;
 295
 296         /* Generate the RTS or CTS-to-self frame */
 297         if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
 298             (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
 299                 unsigned int len;
 300                 struct ieee80211_hdr *hdr;
 301                 int rts_rate, rts_rate_fb;
 302                 int rts_rate_ofdm, rts_rate_fb_ofdm;
 303
 304                 rts_rate = txctl->rts_cts_rate;
 305                 rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
 306                 rts_rate_fb = b43_calc_fallback_rate(rts_rate);
 307                 rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
 308
 309                 if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 310                         ieee80211_ctstoself_get(dev->wl->hw, dev->wl->if_id,
 311                                                 fragment_data, fragment_len,
 312                                                 txctl,
 313                                                 (struct ieee80211_cts *)(txhdr->
 314                                                                          rts_frame));
 315                         mac_ctl |= B43_TX4_MAC_SENDCTS;
 316                         len = sizeof(struct ieee80211_cts);
 317                 } else {
 318                         ieee80211_rts_get(dev->wl->hw, dev->wl->if_id,
 319                                           fragment_data, fragment_len, txctl,
 320                                           (struct ieee80211_rts *)(txhdr->
 321                                                                    rts_frame));
 322                         mac_ctl |= B43_TX4_MAC_SENDRTS;
 323                         len = sizeof(struct ieee80211_rts);
 324                 }
 325                 len += FCS_LEN;
 326                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
 327                                                                rts_plcp), len,
 328                                       rts_rate);
 329                 b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
 330                                                                rts_plcp_fb),
 331                                       len, rts_rate_fb);
 332                 hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
 333                 txhdr->rts_dur_fb = hdr->duration_id;
 334                 if (rts_rate_ofdm) {
 335                         extra_ft |= B43_TX4_EFT_RTSOFDM;
 336                         txhdr->phy_rate_rts =
 337                             b43_plcp_get_ratecode_ofdm(rts_rate);
 338                 } else
 339                         txhdr->phy_rate_rts =
 340                             b43_plcp_get_ratecode_cck(rts_rate);
 341                 if (rts_rate_fb_ofdm)
 342                         extra_ft |= B43_TX4_EFT_RTSFBOFDM;
 343                 mac_ctl |= B43_TX4_MAC_LONGFRAME;
 344         }
 345
 346         /* Magic cookie */
 347         txhdr->cookie = cpu_to_le16(cookie);
 348
 349         /* Apply the bitfields */
 350         txhdr->mac_ctl = cpu_to_le32(mac_ctl);
 351         txhdr->phy_ctl = cpu_to_le16(phy_ctl);
 352         txhdr->extra_ft = extra_ft;
 353 }
 354
 355 void b43_generate_txhdr(struct b43_wldev *dev,
 356                         u8 * txhdr,
 357                         const unsigned char *fragment_data,
 358                         unsigned int fragment_len,
 359                         const struct ieee80211_tx_control *txctl, u16 cookie)
 360 {
 361         generate_txhdr_fw4(dev, (struct b43_txhdr_fw4 *)txhdr,
 362                            fragment_data, fragment_len, txctl, cookie);
 363 }
 364
 365 static s8 b43_rssi_postprocess(struct b43_wldev *dev,
 366                                u8 in_rssi, int ofdm,
 367                                int adjust_2053, int adjust_2050)
 368 {
 369         struct b43_phy *phy = &dev->phy;
 370         s32 tmp;
 371
 372         switch (phy->radio_ver) {
 373         case 0x2050:
 374                 if (ofdm) {
 375                         tmp = in_rssi;
 376                         if (tmp > 127)
 377                                 tmp -= 256;
 378                         tmp *= 73;
 379                         tmp /= 64;
 380                         if (adjust_2050)
 381                                 tmp += 25;
 382                         else
 383                                 tmp -= 3;
 384                 } else {
 385                         if (dev->dev->bus->sprom.r1.
 386                             boardflags_lo & B43_BFL_RSSI) {
 387                                 if (in_rssi > 63)
 388                                         in_rssi = 63;
 389                                 tmp = phy->nrssi_lt[in_rssi];
 390                                 tmp = 31 - tmp;
 391                                 tmp *= -131;
 392                                 tmp /= 128;
 393                                 tmp -= 57;
 394                         } else {
 395                                 tmp = in_rssi;
 396                                 tmp = 31 - tmp;
 397                                 tmp *= -149;
 398                                 tmp /= 128;
 399                                 tmp -= 68;
 400                         }
 401                         if (phy->type == B43_PHYTYPE_G && adjust_2050)
 402                                 tmp += 25;
 403                 }
 404                 break;
 405         case 0x2060:
 406                 if (in_rssi > 127)
 407                         tmp = in_rssi - 256;
 408                 else
 409                         tmp = in_rssi;
 410                 break;
 411         default:
 412                 tmp = in_rssi;
 413                 tmp -= 11;
 414                 tmp *= 103;
 415                 tmp /= 64;
 416                 if (adjust_2053)
 417                         tmp -= 109;
 418                 else
 419                         tmp -= 83;
 420         }
 421
 422         return (s8) tmp;
 423 }
 424
 425 //TODO
 426 #if 0
 427 static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
 428 {
 429         struct b43_phy *phy = &dev->phy;
 430         s8 ret;
 431
 432         if (phy->type == B43_PHYTYPE_A) {
 433                 //TODO: Incomplete specs.
 434                 ret = 0;
 435         } else
 436                 ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
 437
 438         return ret;
 439 }
 440 #endif
 441
 442 void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
 443 {
 444         struct ieee80211_rx_status status;
 445         struct b43_plcp_hdr6 *plcp;
 446         struct ieee80211_hdr *wlhdr;
 447         const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
 448         u16 fctl;
 449         u16 phystat0, phystat3, chanstat, mactime;
 450         u32 macstat;
 451         u16 chanid;
 452         u8 jssi;
 453         int padding;
 454
 455         memset(&status, 0, sizeof(status));
 456
 457         /* Get metadata about the frame from the header. */
 458         phystat0 = le16_to_cpu(rxhdr->phy_status0);
 459         phystat3 = le16_to_cpu(rxhdr->phy_status3);
 460         jssi = rxhdr->jssi;
 461         macstat = le32_to_cpu(rxhdr->mac_status);
 462         mactime = le16_to_cpu(rxhdr->mac_time);
 463         chanstat = le16_to_cpu(rxhdr->channel);
 464
 465         if (macstat & B43_RX_MAC_FCSERR)
 466                 dev->wl->ieee_stats.dot11FCSErrorCount++;
 467         if (macstat & B43_RX_MAC_DECERR) {
 468                 /* Decryption with the given key failed.
 469                  * Drop the packet. We also won't be able to decrypt it with
 470                  * the key in software. */
 471                 goto drop;
 472         }
 473
 474         /* Skip PLCP and padding */
 475         padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
 476         if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
 477                 b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
 478                 goto drop;
 479         }
 480         plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
 481         skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
 482         /* The skb contains the Wireless Header + payload data now */
 483         if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */  + FCS_LEN))) {
 484                 b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
 485                 goto drop;
 486         }
 487         wlhdr = (struct ieee80211_hdr *)(skb->data);
 488         fctl = le16_to_cpu(wlhdr->frame_control);
 489         skb_trim(skb, skb->len - FCS_LEN);
 490
 491         if (macstat & B43_RX_MAC_DEC) {
 492                 unsigned int keyidx;
 493                 int wlhdr_len;
 494
 495                 keyidx = ((macstat & B43_RX_MAC_KEYIDX)
 496                           >> B43_RX_MAC_KEYIDX_SHIFT);
 497                 /* We must adjust the key index here. We want the "physical"
 498                  * key index, but the ucode passed it slightly different.
 499                  */
 500                 keyidx = b43_kidx_to_raw(dev, keyidx);
 501                 B43_WARN_ON(keyidx >= dev->max_nr_keys);
 502
 503                 if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
 504                         wlhdr_len = ieee80211_get_hdrlen(fctl);
 505                         if (unlikely(skb->len < (wlhdr_len + 3))) {
 506                                 b43dbg(dev->wl,
 507                                        "RX: Packet size underrun (3)\n");
 508                                 goto drop;
 509                         }
 510                         status.flag |= RX_FLAG_DECRYPTED;
 511                 }
 512         }
 513
 514         status.ssi = b43_rssi_postprocess(dev, jssi,
 515                                           (phystat0 & B43_RX_PHYST0_OFDM),
 516                                           (phystat0 & B43_RX_PHYST0_GAINCTL),
 517                                           (phystat3 & B43_RX_PHYST3_TRSTATE));
 518         status.noise = dev->stats.link_noise;
 519         /* the next line looks wrong, but is what mac80211 wants */
 520         status.signal = (jssi * 100) / B43_RX_MAX_SSI;
 521         if (phystat0 & B43_RX_PHYST0_OFDM)
 522                 status.rate = b43_plcp_get_bitrate_ofdm(plcp);
 523         else
 524                 status.rate = b43_plcp_get_bitrate_cck(plcp);
 525         status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
 526         status.mactime = mactime;
 527
 528         chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
 529         switch (chanstat & B43_RX_CHAN_PHYTYPE) {
 530         case B43_PHYTYPE_A:
 531                 status.phymode = MODE_IEEE80211A;
 532                 status.freq = chanid;
 533                 status.channel = b43_freq_to_channel_a(chanid);
 534                 break;
 535         case B43_PHYTYPE_B:
 536                 status.phymode = MODE_IEEE80211B;
 537                 status.freq = chanid + 2400;
 538                 status.channel = b43_freq_to_channel_bg(chanid + 2400);
 539                 break;
 540         case B43_PHYTYPE_G:
 541                 status.phymode = MODE_IEEE80211G;
 542                 status.freq = chanid + 2400;
 543                 status.channel = b43_freq_to_channel_bg(chanid + 2400);
 544                 break;
 545         default:
 546                 B43_WARN_ON(1);
 547         }
 548
 549         dev->stats.last_rx = jiffies;
 550         ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
 551
 552         return;
 553 drop:
 554         b43dbg(dev->wl, "RX: Packet dropped\n");
 555         dev_kfree_skb_any(skb);
 556 }
 557
 558 void b43_handle_txstatus(struct b43_wldev *dev,
 559                          const struct b43_txstatus *status)
 560 {
 561         b43_debugfs_log_txstat(dev, status);
 562
 563         if (status->intermediate)
 564                 return;
 565         if (status->for_ampdu)
 566                 return;
 567         if (!status->acked)
 568                 dev->wl->ieee_stats.dot11ACKFailureCount++;
 569         if (status->rts_count) {
 570                 if (status->rts_count == 0xF)   //FIXME
 571                         dev->wl->ieee_stats.dot11RTSFailureCount++;
 572                 else
 573                         dev->wl->ieee_stats.dot11RTSSuccessCount++;
 574         }
 575
 576         if (b43_using_pio(dev))
 577                 b43_pio_handle_txstatus(dev, status);
 578         else
 579                 b43_dma_handle_txstatus(dev, status);
 580 }
 581
 582 /* Handle TX status report as received through DMA/PIO queues */
 583 void b43_handle_hwtxstatus(struct b43_wldev *dev,
 584                            const struct b43_hwtxstatus *hw)
 585 {
 586         struct b43_txstatus status;
 587         u8 tmp;
 588
 589         status.cookie = le16_to_cpu(hw->cookie);
 590         status.seq = le16_to_cpu(hw->seq);
 591         status.phy_stat = hw->phy_stat;
 592         tmp = hw->count;
 593         status.frame_count = (tmp >> 4);
 594         status.rts_count = (tmp & 0x0F);
 595         tmp = hw->flags;
 596         status.supp_reason = ((tmp & 0x1C) >> 2);
 597         status.pm_indicated = !!(tmp & 0x80);
 598         status.intermediate = !!(tmp & 0x40);
 599         status.for_ampdu = !!(tmp & 0x20);
 600         status.acked = !!(tmp & 0x02);
 601
 602         b43_handle_txstatus(dev, &status);
 603 }
 604
 605 /* Stop any TX operation on the device (suspend the hardware queues) */
 606 void b43_tx_suspend(struct b43_wldev *dev)
 607 {
 608         if (b43_using_pio(dev))
 609                 b43_pio_freeze_txqueues(dev);
 610         else
 611                 b43_dma_tx_suspend(dev);
 612 }
 613
 614 /* Resume any TX operation on the device (resume the hardware queues) */
 615 void b43_tx_resume(struct b43_wldev *dev)
 616 {
 617         if (b43_using_pio(dev))
 618                 b43_pio_thaw_txqueues(dev);
 619         else
 620                 b43_dma_tx_resume(dev);
 621 }
 622
 623 #if 0
 624 static void upload_qos_parms(struct b43_wldev *dev,
 625                              const u16 * parms, u16 offset)
 626 {
 627         int i;
 628
 629         for (i = 0; i < B43_NR_QOSPARMS; i++) {
 630                 b43_shm_write16(dev, B43_SHM_SHARED,
 631                                 offset + (i * 2), parms[i]);
 632         }
 633 }
 634 #endif
 635
 636 /* Initialize the QoS parameters */
 637 void b43_qos_init(struct b43_wldev *dev)
 638 {
 639         /* FIXME: This function must probably be called from the mac80211
 640          * config callback. */
 641         return;
 642
 643         b43_hf_write(dev, b43_hf_read(dev) | B43_HF_EDCF);
 644         //FIXME kill magic
 645         b43_write16(dev, 0x688, b43_read16(dev, 0x688) | 0x4);
 646
 647         /*TODO: We might need some stack support here to get the values. */
 648 }