package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_xmit.c

   1 /*
   2
   3   Broadcom BCM43xx 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 "bcm43xx_xmit.h"
  31 #include "bcm43xx_phy.h"
  32 #include "bcm43xx_dma.h"
  33 #include "bcm43xx_pio.h"
  34
  35
  36 /* Extract the bitrate out of a CCK PLCP header. */
  37 static u8 bcm43xx_plcp_get_bitrate_cck(struct bcm43xx_plcp_hdr6 *plcp)
  38 {
  39         switch (plcp->raw[0]) {
  40         case 0x0A:
  41                 return BCM43xx_CCK_RATE_1MB;
  42         case 0x14:
  43                 return BCM43xx_CCK_RATE_2MB;
  44         case 0x37:
  45                 return BCM43xx_CCK_RATE_5MB;
  46         case 0x6E:
  47                 return BCM43xx_CCK_RATE_11MB;
  48         }
  49         assert(0);
  50         return 0;
  51 }
  52
  53 /* Extract the bitrate out of an OFDM PLCP header. */
  54 static u8 bcm43xx_plcp_get_bitrate_ofdm(struct bcm43xx_plcp_hdr6 *plcp)
  55 {
  56         switch (plcp->raw[0] & 0xF) {
  57         case 0xB:
  58                 return BCM43xx_OFDM_RATE_6MB;
  59         case 0xF:
  60                 return BCM43xx_OFDM_RATE_9MB;
  61         case 0xA:
  62                 return BCM43xx_OFDM_RATE_12MB;
  63         case 0xE:
  64                 return BCM43xx_OFDM_RATE_18MB;
  65         case 0x9:
  66                 return BCM43xx_OFDM_RATE_24MB;
  67         case 0xD:
  68                 return BCM43xx_OFDM_RATE_36MB;
  69         case 0x8:
  70                 return BCM43xx_OFDM_RATE_48MB;
  71         case 0xC:
  72                 return BCM43xx_OFDM_RATE_54MB;
  73         }
  74         assert(0);
  75         return 0;
  76 }
  77
  78 u8 bcm43xx_plcp_get_ratecode_cck(const u8 bitrate)
  79 {
  80         switch (bitrate) {
  81         case BCM43xx_CCK_RATE_1MB:
  82                 return 0x0A;
  83         case BCM43xx_CCK_RATE_2MB:
  84                 return 0x14;
  85         case BCM43xx_CCK_RATE_5MB:
  86                 return 0x37;
  87         case BCM43xx_CCK_RATE_11MB:
  88                 return 0x6E;
  89         }
  90         assert(0);
  91         return 0;
  92 }
  93
  94 u8 bcm43xx_plcp_get_ratecode_ofdm(const u8 bitrate)
  95 {
  96         switch (bitrate) {
  97         case BCM43xx_OFDM_RATE_6MB:
  98                 return 0xB;
  99         case BCM43xx_OFDM_RATE_9MB:
 100                 return 0xF;
 101         case BCM43xx_OFDM_RATE_12MB:
 102                 return 0xA;
 103         case BCM43xx_OFDM_RATE_18MB:
 104                 return 0xE;
 105         case BCM43xx_OFDM_RATE_24MB:
 106                 return 0x9;
 107         case BCM43xx_OFDM_RATE_36MB:
 108                 return 0xD;
 109         case BCM43xx_OFDM_RATE_48MB:
 110                 return 0x8;
 111         case BCM43xx_OFDM_RATE_54MB:
 112                 return 0xC;
 113         }
 114         assert(0);
 115         return 0;
 116 }
 117
 118 void bcm43xx_generate_plcp_hdr(struct bcm43xx_plcp_hdr4 *plcp,
 119                                const u16 octets, const u8 bitrate)
 120 {
 121         __le32 *data = &(plcp->data);
 122         __u8 *raw = plcp->raw;
 123
 124         if (bcm43xx_is_ofdm_rate(bitrate)) {
 125                 *data = bcm43xx_plcp_get_ratecode_ofdm(bitrate);
 126                 assert(!(octets & 0xF000));
 127                 *data |= (octets << 5);
 128                 *data = cpu_to_le32(*data);
 129         } else {
 130                 u32 plen;
 131
 132                 plen = octets * 16 / bitrate;
 133                 if ((octets * 16 % bitrate) > 0) {
 134                         plen++;
 135                         if ((bitrate == BCM43xx_CCK_RATE_11MB)
 136                             && ((octets * 8 % 11) < 4)) {
 137                                 raw[1] = 0x84;
 138                         } else
 139                                 raw[1] = 0x04;
 140                 } else
 141                         raw[1] = 0x04;
 142                 *data |= cpu_to_le32(plen << 16);
 143                 raw[0] = bcm43xx_plcp_get_ratecode_cck(bitrate);
 144         }
 145 }
 146
 147 static u8 bcm43xx_calc_fallback_rate(u8 bitrate)
 148 {
 149         switch (bitrate) {
 150         case BCM43xx_CCK_RATE_1MB:
 151                 return BCM43xx_CCK_RATE_1MB;
 152         case BCM43xx_CCK_RATE_2MB:
 153                 return BCM43xx_CCK_RATE_1MB;
 154         case BCM43xx_CCK_RATE_5MB:
 155                 return BCM43xx_CCK_RATE_2MB;
 156         case BCM43xx_CCK_RATE_11MB:
 157                 return BCM43xx_CCK_RATE_5MB;
 158         case BCM43xx_OFDM_RATE_6MB:
 159                 return BCM43xx_CCK_RATE_5MB;
 160         case BCM43xx_OFDM_RATE_9MB:
 161                 return BCM43xx_OFDM_RATE_6MB;
 162         case BCM43xx_OFDM_RATE_12MB:
 163                 return BCM43xx_OFDM_RATE_9MB;
 164         case BCM43xx_OFDM_RATE_18MB:
 165                 return BCM43xx_OFDM_RATE_12MB;
 166         case BCM43xx_OFDM_RATE_24MB:
 167                 return BCM43xx_OFDM_RATE_18MB;
 168         case BCM43xx_OFDM_RATE_36MB:
 169                 return BCM43xx_OFDM_RATE_24MB;
 170         case BCM43xx_OFDM_RATE_48MB:
 171                 return BCM43xx_OFDM_RATE_36MB;
 172         case BCM43xx_OFDM_RATE_54MB:
 173                 return BCM43xx_OFDM_RATE_48MB;
 174         }
 175         assert(0);
 176         return 0;
 177 }
 178
 179 static void generate_txhdr_fw4(struct bcm43xx_wldev *dev,
 180                                struct bcm43xx_txhdr_fw4 *txhdr,
 181                                const unsigned char *fragment_data,
 182                                unsigned int fragment_len,
 183                                const struct ieee80211_tx_control *txctl,
 184                                u16 cookie)
 185 {
 186         const struct bcm43xx_phy *phy = &dev->phy;
 187         const struct ieee80211_hdr *wlhdr = (const struct ieee80211_hdr *)fragment_data;
 188         int use_encryption = ((!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) &&
 189                               (txctl->key_idx >= 0));
 190         u16 fctl = le16_to_cpu(wlhdr->frame_control);
 191         u8 rate, rate_fb;
 192         int rate_ofdm, rate_fb_ofdm;
 193         unsigned int plcp_fragment_len;
 194         u32 mac_ctl = 0;
 195         u16 phy_ctl = 0;
 196         u8 extra_ft = 0;
 197
 198         memset(txhdr, 0, sizeof(*txhdr));
 199
 200         rate = txctl->tx_rate;
 201         rate_ofdm = bcm43xx_is_ofdm_rate(rate);
 202         rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
 203         rate_fb_ofdm = bcm43xx_is_ofdm_rate(rate_fb);
 204
 205         if (rate_ofdm)
 206                 txhdr->phy_rate = bcm43xx_plcp_get_ratecode_ofdm(rate);
 207         else
 208                 txhdr->phy_rate = bcm43xx_plcp_get_ratecode_cck(rate);
 209         txhdr->mac_frame_ctl = wlhdr->frame_control;
 210         memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
 211
 212         /* Calculate duration for fallback rate */
 213         if ((rate_fb == rate) ||
 214             (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
 215             (wlhdr->duration_id == cpu_to_le16(0))) {
 216                 /* If the fallback rate equals the normal rate or the
 217                  * dur_id field contains an AID, CFP magic or 0,
 218                  * use the original dur_id field. */
 219                 txhdr->dur_fb = wlhdr->duration_id;
 220         } else {
 221                 int fbrate_base100kbps = BCM43xx_RATE_TO_BASE100KBPS(rate_fb);
 222                 txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
 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 bcm43xx_key *key;
 231                 int wlhdr_len;
 232                 size_t iv_len;
 233
 234                 assert(key_idx < dev->max_nr_keys);
 235                 key = &(dev->key[key_idx]);
 236
 237                 if (key->enabled) {
 238                         /* Hardware appends ICV. */
 239                         plcp_fragment_len += txctl->icv_len;
 240
 241                         key_idx = bcm43xx_kidx_to_fw(dev, key_idx);
 242                         mac_ctl |= (key_idx << BCM43xx_TX4_MAC_KEYIDX_SHIFT) &
 243                                    BCM43xx_TX4_MAC_KEYIDX;
 244                         mac_ctl |= (key->algorithm << BCM43xx_TX4_MAC_KEYALG_SHIFT) &
 245                                    BCM43xx_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         }
 252         bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->plcp),
 253                                   plcp_fragment_len, rate);
 254         bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->plcp_fb),
 255                                   plcp_fragment_len, rate_fb);
 256
 257         /* Extra Frame Types */
 258         if (rate_fb_ofdm)
 259                 extra_ft |= BCM43xx_TX4_EFT_FBOFDM;
 260
 261         /* Set channel radio code. Note that the micrcode ORs 0x100 to
 262          * this value before comparing it to the value in SHM, if this
 263          * is a 5Ghz packet.
 264          */
 265         txhdr->chan_radio_code = phy->channel;
 266
 267         /* PHY TX Control word */
 268         if (rate_ofdm)
 269                 phy_ctl |= BCM43xx_TX4_PHY_OFDM;
 270         if (dev->short_preamble)
 271                 phy_ctl |= BCM43xx_TX4_PHY_SHORTPRMBL;
 272         switch (txctl->antenna_sel_tx) {
 273         case 0:
 274                 phy_ctl |= BCM43xx_TX4_PHY_ANTLAST;
 275                 break;
 276         case 1:
 277                 phy_ctl |= BCM43xx_TX4_PHY_ANT0;
 278                 break;
 279         case 2:
 280                 phy_ctl |= BCM43xx_TX4_PHY_ANT1;
 281                 break;
 282         default:
 283                 assert(0);
 284         }
 285
 286         /* MAC control */
 287         if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
 288                 mac_ctl |= BCM43xx_TX4_MAC_ACK;
 289         if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
 290               ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
 291                 mac_ctl |= BCM43xx_TX4_MAC_HWSEQ;
 292         if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
 293                 mac_ctl |= BCM43xx_TX4_MAC_STMSDU;
 294         if (phy->type == BCM43xx_PHYTYPE_A)
 295                 mac_ctl |= BCM43xx_TX4_MAC_5GHZ;
 296
 297         /* Generate the RTS or CTS-to-self frame */
 298         if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
 299             (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
 300                 unsigned int len;
 301                 struct ieee80211_hdr *hdr;
 302                 int rts_rate, rts_rate_fb;
 303                 int rts_rate_ofdm, rts_rate_fb_ofdm;
 304
 305                 rts_rate = txctl->rts_cts_rate;
 306                 rts_rate_ofdm = bcm43xx_is_ofdm_rate(rts_rate);
 307                 rts_rate_fb = bcm43xx_calc_fallback_rate(rts_rate);
 308                 rts_rate_fb_ofdm = bcm43xx_is_ofdm_rate(rts_rate_fb);
 309
 310                 if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 311                         ieee80211_ctstoself_get(dev->wl->hw,
 312                                                 fragment_data, fragment_len, txctl,
 313                                                 (struct ieee80211_cts *)(txhdr->rts_frame));
 314                         mac_ctl |= BCM43xx_TX4_MAC_SENDCTS;
 315                         len = sizeof(struct ieee80211_cts);
 316                 } else {
 317                         ieee80211_rts_get(dev->wl->hw,
 318                                           fragment_data, fragment_len, txctl,
 319                                           (struct ieee80211_rts *)(txhdr->rts_frame));
 320                         mac_ctl |= BCM43xx_TX4_MAC_SENDRTS;
 321                         len = sizeof(struct ieee80211_rts);
 322                 }
 323                 len += FCS_LEN;
 324                 bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->rts_plcp),
 325                                           len, rts_rate);
 326                 bcm43xx_generate_plcp_hdr((struct bcm43xx_plcp_hdr4 *)(&txhdr->rts_plcp_fb),
 327                                           len, rts_rate_fb);
 328                 hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
 329                 txhdr->rts_dur_fb = hdr->duration_id;
 330                 if (rts_rate_ofdm) {
 331                         extra_ft |= BCM43xx_TX4_EFT_RTSOFDM;
 332                         txhdr->phy_rate_rts = bcm43xx_plcp_get_ratecode_ofdm(rts_rate);
 333                 } else
 334                         txhdr->phy_rate_rts = bcm43xx_plcp_get_ratecode_cck(rts_rate);
 335                 if (rts_rate_fb_ofdm)
 336                         extra_ft |= BCM43xx_TX4_EFT_RTSFBOFDM;
 337                 mac_ctl |= BCM43xx_TX4_MAC_LONGFRAME;
 338         }
 339
 340         /* Magic cookie */
 341         txhdr->cookie = cpu_to_le16(cookie);
 342
 343         /* Apply the bitfields */
 344         txhdr->mac_ctl = cpu_to_le32(mac_ctl);
 345         txhdr->phy_ctl = cpu_to_le16(phy_ctl);
 346         txhdr->extra_ft = extra_ft;
 347 }
 348
 349 void bcm43xx_generate_txhdr(struct bcm43xx_wldev *dev,
 350                             u8 *txhdr,
 351                             const unsigned char *fragment_data,
 352                             unsigned int fragment_len,
 353                             const struct ieee80211_tx_control *txctl,
 354                             u16 cookie)
 355 {
 356         generate_txhdr_fw4(dev, (struct bcm43xx_txhdr_fw4 *)txhdr,
 357                            fragment_data, fragment_len,
 358                            txctl, cookie);
 359 }
 360
 361 static s8 bcm43xx_rssi_postprocess(struct bcm43xx_wldev *dev,
 362                                    u8 in_rssi, int ofdm,
 363                                    int adjust_2053, int adjust_2050)
 364 {
 365         struct bcm43xx_phy *phy = &dev->phy;
 366         s32 tmp;
 367
 368         switch (phy->radio_ver) {
 369         case 0x2050:
 370                 if (ofdm) {
 371                         tmp = in_rssi;
 372                         if (tmp > 127)
 373                                 tmp -= 256;
 374                         tmp *= 73;
 375                         tmp /= 64;
 376                         if (adjust_2050)
 377                                 tmp += 25;
 378                         else
 379                                 tmp -= 3;
 380                 } else {
 381                         if (dev->dev->bus->sprom.r1.boardflags_lo & BCM43xx_BFL_RSSI) {
 382                                 if (in_rssi > 63)
 383                                         in_rssi = 63;
 384                                 tmp = phy->nrssi_lt[in_rssi];
 385                                 tmp = 31 - tmp;
 386                                 tmp *= -131;
 387                                 tmp /= 128;
 388                                 tmp -= 57;
 389                         } else {
 390                                 tmp = in_rssi;
 391                                 tmp = 31 - tmp;
 392                                 tmp *= -149;
 393                                 tmp /= 128;
 394                                 tmp -= 68;
 395                         }
 396                         if (phy->type == BCM43xx_PHYTYPE_G &&
 397                             adjust_2050)
 398                                 tmp += 25;
 399                 }
 400                 break;
 401         case 0x2060:
 402                 if (in_rssi > 127)
 403                         tmp = in_rssi - 256;
 404                 else
 405                         tmp = in_rssi;
 406                 break;
 407         default:
 408                 tmp = in_rssi;
 409                 tmp -= 11;
 410                 tmp *= 103;
 411                 tmp /= 64;
 412                 if (adjust_2053)
 413                         tmp -= 109;
 414                 else
 415                         tmp -= 83;
 416         }
 417
 418         return (s8)tmp;
 419 }
 420
 421 //TODO
 422 #if 0
 423 static s8 bcm43xx_rssinoise_postprocess(struct bcm43xx_wldev *dev,
 424                                         u8 in_rssi)
 425 {
 426         struct bcm43xx_phy *phy = &dev->phy;
 427         s8 ret;
 428
 429         if (phy->type == BCM43xx_PHYTYPE_A) {
 430                 //TODO: Incomplete specs.
 431                 ret = 0;
 432         } else
 433                 ret = bcm43xx_rssi_postprocess(dev, in_rssi, 0, 1, 1);
 434
 435         return ret;
 436 }
 437 #endif
 438
 439 void bcm43xx_rx(struct bcm43xx_wldev *dev,
 440                 struct sk_buff *skb,
 441                 const void *_rxhdr)
 442 {
 443         struct ieee80211_rx_status status;
 444         struct bcm43xx_plcp_hdr6 *plcp;
 445         struct ieee80211_hdr *wlhdr;
 446         const struct bcm43xx_rxhdr_fw4 *rxhdr = _rxhdr;
 447         u16 fctl;
 448         u16 phystat0, phystat3, chanstat, mactime;
 449         u32 macstat;
 450         u16 chanid;
 451         u8 jssi;
 452         int padding;
 453
 454         memset(&status, 0, sizeof(status));
 455
 456         /* Get metadata about the frame from the header. */
 457         phystat0 = le16_to_cpu(rxhdr->phy_status0);
 458         phystat3 = le16_to_cpu(rxhdr->phy_status3);
 459         jssi = rxhdr->jssi;
 460         macstat = le32_to_cpu(rxhdr->mac_status);
 461         mactime = le16_to_cpu(rxhdr->mac_time);
 462         chanstat = le16_to_cpu(rxhdr->channel);
 463
 464         if (macstat & BCM43xx_RX_MAC_FCSERR)
 465                 dev->wl->ieee_stats.dot11FCSErrorCount++;
 466
 467         /* Skip PLCP and padding */
 468         padding = (macstat & BCM43xx_RX_MAC_PADDING) ? 2 : 0;
 469         if (unlikely(skb->len < (sizeof(struct bcm43xx_plcp_hdr6) + padding))) {
 470                 dprintkl(KERN_DEBUG PFX "RX: Packet size underrun (1)\n");
 471                 goto drop;
 472         }
 473         plcp = (struct bcm43xx_plcp_hdr6 *)(skb->data + padding);
 474         skb_pull(skb, sizeof(struct bcm43xx_plcp_hdr6) + padding);
 475         /* The skb contains the Wireless Header + payload data now */
 476         if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) {
 477                 dprintkl(KERN_DEBUG PFX "RX: Packet size underrun (2)\n");
 478                 goto drop;
 479         }
 480         wlhdr = (struct ieee80211_hdr *)(skb->data);
 481         fctl = le16_to_cpu(wlhdr->frame_control);
 482         skb_trim(skb, skb->len - FCS_LEN);
 483
 484         if ((macstat & BCM43xx_RX_MAC_DEC) &&
 485             !(macstat & BCM43xx_RX_MAC_DECERR)) {
 486                 unsigned int keyidx;
 487                 int wlhdr_len;
 488                 int iv_len;
 489                 int icv_len;
 490
 491                 keyidx = ((macstat & BCM43xx_RX_MAC_KEYIDX)
 492                           >> BCM43xx_RX_MAC_KEYIDX_SHIFT);
 493                 /* We must adjust the key index here. We want the "physical"
 494                  * key index, but the ucode passed it slightly different.
 495                  */
 496                 keyidx = bcm43xx_kidx_to_raw(dev, keyidx);
 497                 assert(keyidx < dev->max_nr_keys);
 498
 499                 if (dev->key[keyidx].algorithm != BCM43xx_SEC_ALGO_NONE) {
 500                         /* Remove PROTECTED flag to mark it as decrypted. */
 501                         assert(fctl & IEEE80211_FCTL_PROTECTED);
 502                         fctl &= ~IEEE80211_FCTL_PROTECTED;
 503                         wlhdr->frame_control = cpu_to_le16(fctl);
 504
 505                         wlhdr_len = ieee80211_get_hdrlen(fctl);
 506                         if (unlikely(skb->len < (wlhdr_len + 3))) {
 507                                 dprintkl(KERN_DEBUG PFX
 508                                          "RX: Packet size underrun (3)\n");
 509                                 goto drop;
 510                         }
 511                         if (skb->data[wlhdr_len + 3] & (1 << 5)) {
 512                                 /* The Ext-IV Bit is set in the "KeyID"
 513                                  * octet of the IV.
 514                                  */
 515                                 iv_len = 8;
 516                                 icv_len = 8;
 517                         } else {
 518                                 iv_len = 4;
 519                                 icv_len = 4;
 520                         }
 521                         if (unlikely(skb->len < (wlhdr_len + iv_len + icv_len))) {
 522                                 dprintkl(KERN_DEBUG PFX
 523                                          "RX: Packet size underrun (4)\n");
 524                                 goto drop;
 525                         }
 526                         /* Remove the IV */
 527                         memmove(skb->data + iv_len, skb->data, wlhdr_len);
 528                         skb_pull(skb, iv_len);
 529                         /* Remove the ICV */
 530                         skb_trim(skb, skb->len - icv_len);
 531
 532                         status.flag |= RX_FLAG_DECRYPTED;
 533                 }
 534         }
 535
 536         status.ssi = bcm43xx_rssi_postprocess(dev, jssi,
 537                                               (phystat0 & BCM43xx_RX_PHYST0_OFDM),
 538                                               (phystat0 & BCM43xx_RX_PHYST0_GAINCTL),
 539                                               (phystat3 & BCM43xx_RX_PHYST3_TRSTATE));
 540         status.noise = dev->stats.link_noise;
 541         status.signal = jssi; /* this looks wrong, but is what mac80211 wants */
 542         if (phystat0 & BCM43xx_RX_PHYST0_OFDM)
 543                 status.rate = bcm43xx_plcp_get_bitrate_ofdm(plcp);
 544         else
 545                 status.rate = bcm43xx_plcp_get_bitrate_cck(plcp);
 546         status.antenna = !!(phystat0 & BCM43xx_RX_PHYST0_ANT);
 547         status.mactime = mactime;
 548
 549         chanid = (chanstat & BCM43xx_RX_CHAN_ID) >> BCM43xx_RX_CHAN_ID_SHIFT;
 550         switch (chanstat & BCM43xx_RX_CHAN_PHYTYPE) {
 551         case BCM43xx_PHYTYPE_A:
 552                 status.phymode = MODE_IEEE80211A;
 553                 status.freq = chanid;
 554                 status.channel = bcm43xx_freq_to_channel_a(chanid);
 555                 break;
 556         case BCM43xx_PHYTYPE_B:
 557                 status.phymode = MODE_IEEE80211B;
 558                 status.freq = chanid + 2400;
 559                 status.channel = bcm43xx_freq_to_channel_bg(chanid + 2400);
 560                 break;
 561         case BCM43xx_PHYTYPE_G:
 562                 status.phymode = MODE_IEEE80211G;
 563                 status.freq = chanid + 2400;
 564                 status.channel = bcm43xx_freq_to_channel_bg(chanid + 2400);
 565                 break;
 566         default:
 567                 assert(0);
 568         }
 569
 570         dev->stats.last_rx = jiffies;
 571         ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
 572
 573         return;
 574 drop:
 575         dprintkl(KERN_DEBUG PFX "RX: Packet dropped\n");
 576         dev_kfree_skb_any(skb);
 577 }
 578
 579 void bcm43xx_handle_txstatus(struct bcm43xx_wldev *dev,
 580                              const struct bcm43xx_txstatus *status)
 581 {
 582         bcm43xx_debugfs_log_txstat(dev, status);
 583
 584         if (status->intermediate)
 585                 return;
 586         if (status->for_ampdu)
 587                 return;
 588         if (!status->acked)
 589                 dev->wl->ieee_stats.dot11ACKFailureCount++;
 590         if (status->rts_count) {
 591                 if (status->rts_count == 0xF) //FIXME
 592                         dev->wl->ieee_stats.dot11RTSFailureCount++;
 593                 else
 594                         dev->wl->ieee_stats.dot11RTSSuccessCount++;
 595         }
 596
 597         if (bcm43xx_using_pio(dev))
 598                 bcm43xx_pio_handle_txstatus(dev, status);
 599         else
 600                 bcm43xx_dma_handle_txstatus(dev, status);
 601 }
 602
 603 /* Handle TX status report as received through DMA/PIO queues */
 604 void bcm43xx_handle_hwtxstatus(struct bcm43xx_wldev *dev,
 605                                const struct bcm43xx_hwtxstatus *hw)
 606 {
 607         struct bcm43xx_txstatus status;
 608         u8 tmp;
 609
 610         status.cookie = le16_to_cpu(hw->cookie);
 611         status.seq = le16_to_cpu(hw->seq);
 612         status.phy_stat = hw->phy_stat;
 613         tmp = hw->count;
 614         status.frame_count = (tmp >> 4);
 615         status.rts_count = (tmp & 0x0F);
 616         tmp = hw->flags;
 617         status.supp_reason = ((tmp & 0x1C) >> 2);
 618         status.pm_indicated = !!(tmp & 0x80);
 619         status.intermediate = !!(tmp & 0x40);
 620         status.for_ampdu = !!(tmp & 0x20);
 621         status.acked = !!(tmp & 0x02);
 622
 623         bcm43xx_handle_txstatus(dev, &status);
 624 }
 625
 626 /* Stop any TX operation on the device (suspend the hardware queues) */
 627 void bcm43xx_tx_suspend(struct bcm43xx_wldev *dev)
 628 {
 629         if (bcm43xx_using_pio(dev))
 630                 bcm43xx_pio_freeze_txqueues(dev);
 631         else
 632                 bcm43xx_dma_tx_suspend(dev);
 633 }
 634
 635 /* Resume any TX operation on the device (resume the hardware queues) */
 636 void bcm43xx_tx_resume(struct bcm43xx_wldev *dev)
 637 {
 638         if (bcm43xx_using_pio(dev))
 639                 bcm43xx_pio_thaw_txqueues(dev);
 640         else
 641                 bcm43xx_dma_tx_resume(dev);
 642 }
 643
 644 #if 0
 645 static void upload_qos_parms(struct bcm43xx_wldev *dev,
 646                              const u16 *parms,
 647                              u16 offset)
 648 {
 649         int i;
 650
 651         for (i = 0; i < BCM43xx_NR_QOSPARMS; i++) {
 652                 bcm43xx_shm_write16(dev, BCM43xx_SHM_SHARED,
 653                                     offset + (i * 2), parms[i]);
 654         }
 655 }
 656 #endif
 657
 658 /* Initialize the QoS parameters */
 659 void bcm43xx_qos_init(struct bcm43xx_wldev *dev)
 660 {
 661         /* FIXME: This function must probably be called from the mac80211
 662          * config callback. */
 663 return;
 664
 665         bcm43xx_hf_write(dev, bcm43xx_hf_read(dev) | BCM43xx_HF_EDCF);
 666         //FIXME kill magic
 667         bcm43xx_write16(dev, 0x688,
 668                         bcm43xx_read16(dev, 0x688) | 0x4);
 669
 670
 671         /*TODO: We might need some stack support here to get the values. */
 672 }