drivers/staging/vt6655/device_main.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: device_main.c
  20  *
  21  * Purpose: driver entry for initial, open, close, tx and rx.
  22  *
  23  * Author: Lyndon Chen
  24  *
  25  * Date: Jan 8, 2003
  26  *
  27  * Functions:
  28  *
  29  *   vt6655_probe - module initial (insmod) driver entry
  30  *   vt6655_remove - module remove entry
  31  *   device_free_info - device structure resource free function
  32  *   device_print_info - print out resource
  33  *   device_rx_srv - rx service function
  34  *   device_alloc_rx_buf - rx buffer pre-allocated function
  35  *   device_free_tx_buf - free tx buffer function
  36  *   device_init_rd0_ring- initial rd dma0 ring
  37  *   device_init_rd1_ring- initial rd dma1 ring
  38  *   device_init_td0_ring- initial tx dma0 ring buffer
  39  *   device_init_td1_ring- initial tx dma1 ring buffer
  40  *   device_init_registers- initial MAC & BBP & RF internal registers.
  41  *   device_init_rings- initial tx/rx ring buffer
  42  *   device_free_rings- free all allocated ring buffer
  43  *   device_tx_srv- tx interrupt service function
  44  *
  45  * Revision History:
  46  */
  47 #undef __NO_VERSION__
  48
  49 #include <linux/file.h>
  50 #include "device.h"
  51 #include "card.h"
  52 #include "channel.h"
  53 #include "baseband.h"
  54 #include "mac.h"
  55 #include "power.h"
  56 #include "rxtx.h"
  57 #include "dpc.h"
  58 #include "rf.h"
  59 #include <linux/delay.h>
  60 #include <linux/kthread.h>
  61 #include <linux/slab.h>
  62
  63 /*---------------------  Static Definitions -------------------------*/
  64 /*
  65  * Define module options
  66  */
  67 MODULE_AUTHOR("VIA Networking Technologies, Inc., <[email protected]>");
  68 MODULE_LICENSE("GPL");
  69 MODULE_DESCRIPTION("VIA Networking Solomon-A/B/G Wireless LAN Adapter Driver");
  70
  71 #define DEVICE_PARAM(N, D)
  72
  73 #define RX_DESC_MIN0     16
  74 #define RX_DESC_MAX0     128
  75 #define RX_DESC_DEF0     32
  76 DEVICE_PARAM(RxDescriptors0, "Number of receive descriptors0");
  77
  78 #define RX_DESC_MIN1     16
  79 #define RX_DESC_MAX1     128
  80 #define RX_DESC_DEF1     32
  81 DEVICE_PARAM(RxDescriptors1, "Number of receive descriptors1");
  82
  83 #define TX_DESC_MIN0     16
  84 #define TX_DESC_MAX0     128
  85 #define TX_DESC_DEF0     32
  86 DEVICE_PARAM(TxDescriptors0, "Number of transmit descriptors0");
  87
  88 #define TX_DESC_MIN1     16
  89 #define TX_DESC_MAX1     128
  90 #define TX_DESC_DEF1     64
  91 DEVICE_PARAM(TxDescriptors1, "Number of transmit descriptors1");
  92
  93 #define INT_WORKS_DEF   20
  94 #define INT_WORKS_MIN   10
  95 #define INT_WORKS_MAX   64
  96
  97 DEVICE_PARAM(int_works, "Number of packets per interrupt services");
  98
  99 #define RTS_THRESH_DEF     2347
 100
 101 #define FRAG_THRESH_DEF     2346
 102
 103 #define SHORT_RETRY_MIN     0
 104 #define SHORT_RETRY_MAX     31
 105 #define SHORT_RETRY_DEF     8
 106
 107 DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");
 108
 109 #define LONG_RETRY_MIN     0
 110 #define LONG_RETRY_MAX     15
 111 #define LONG_RETRY_DEF     4
 112
 113 DEVICE_PARAM(LongRetryLimit, "long frame retry limits");
 114
 115 /* BasebandType[] baseband type selected
 116    0: indicate 802.11a type
 117    1: indicate 802.11b type
 118    2: indicate 802.11g type
 119 */
 120 #define BBP_TYPE_MIN     0
 121 #define BBP_TYPE_MAX     2
 122 #define BBP_TYPE_DEF     2
 123
 124 DEVICE_PARAM(BasebandType, "baseband type");
 125
 126 /*
 127  * Static vars definitions
 128  */
 129 static const struct pci_device_id vt6655_pci_id_table[] = {
 130         { PCI_VDEVICE(VIA, 0x3253) },
 131         { 0, }
 132 };
 133
 134 /*---------------------  Static Functions  --------------------------*/
 135
 136 static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
 137 static void device_free_info(struct vnt_private *priv);
 138 static void device_print_info(struct vnt_private *priv);
 139
 140 static void device_init_rd0_ring(struct vnt_private *priv);
 141 static void device_init_rd1_ring(struct vnt_private *priv);
 142 static void device_init_td0_ring(struct vnt_private *priv);
 143 static void device_init_td1_ring(struct vnt_private *priv);
 144
 145 static int  device_rx_srv(struct vnt_private *priv, unsigned int idx);
 146 static int  device_tx_srv(struct vnt_private *priv, unsigned int idx);
 147 static bool device_alloc_rx_buf(struct vnt_private *, struct vnt_rx_desc *);
 148 static void device_init_registers(struct vnt_private *priv);
 149 static void device_free_tx_buf(struct vnt_private *, struct vnt_tx_desc *);
 150 static void device_free_td0_ring(struct vnt_private *priv);
 151 static void device_free_td1_ring(struct vnt_private *priv);
 152 static void device_free_rd0_ring(struct vnt_private *priv);
 153 static void device_free_rd1_ring(struct vnt_private *priv);
 154 static void device_free_rings(struct vnt_private *priv);
 155
 156 /*---------------------  Export Variables  --------------------------*/
 157
 158 /*---------------------  Export Functions  --------------------------*/
 159
 160 static void vt6655_remove(struct pci_dev *pcid)
 161 {
 162         struct vnt_private *priv = pci_get_drvdata(pcid);
 163
 164         if (priv == NULL)
 165                 return;
 166         device_free_info(priv);
 167 }
 168
 169 static void device_get_options(struct vnt_private *priv)
 170 {
 171         struct vnt_options *opts = &priv->opts;
 172
 173         opts->rx_descs0 = RX_DESC_DEF0;
 174         opts->rx_descs1 = RX_DESC_DEF1;
 175         opts->tx_descs[0] = TX_DESC_DEF0;
 176         opts->tx_descs[1] = TX_DESC_DEF1;
 177         opts->int_works = INT_WORKS_DEF;
 178
 179         opts->short_retry = SHORT_RETRY_DEF;
 180         opts->long_retry = LONG_RETRY_DEF;
 181         opts->bbp_type = BBP_TYPE_DEF;
 182 }
 183
 184 static void
 185 device_set_options(struct vnt_private *priv)
 186 {
 187         priv->byShortRetryLimit = priv->opts.short_retry;
 188         priv->byLongRetryLimit = priv->opts.long_retry;
 189         priv->byBBType = priv->opts.bbp_type;
 190         priv->byPacketType = priv->byBBType;
 191         priv->byAutoFBCtrl = AUTO_FB_0;
 192         priv->bUpdateBBVGA = true;
 193         priv->byPreambleType = 0;
 194
 195         pr_debug(" byShortRetryLimit= %d\n", (int)priv->byShortRetryLimit);
 196         pr_debug(" byLongRetryLimit= %d\n", (int)priv->byLongRetryLimit);
 197         pr_debug(" byPreambleType= %d\n", (int)priv->byPreambleType);
 198         pr_debug(" byShortPreamble= %d\n", (int)priv->byShortPreamble);
 199         pr_debug(" byBBType= %d\n", (int)priv->byBBType);
 200 }
 201
 202 /*
 203  * Initialisation of MAC & BBP registers
 204  */
 205
 206 static void device_init_registers(struct vnt_private *priv)
 207 {
 208         unsigned long flags;
 209         unsigned int ii;
 210         unsigned char byValue;
 211         unsigned char byCCKPwrdBm = 0;
 212         unsigned char byOFDMPwrdBm = 0;
 213
 214         MACbShutdown(priv->PortOffset);
 215         BBvSoftwareReset(priv);
 216
 217         /* Do MACbSoftwareReset in MACvInitialize */
 218         MACbSoftwareReset(priv->PortOffset);
 219
 220         priv->bAES = false;
 221
 222         /* Only used in 11g type, sync with ERP IE */
 223         priv->bProtectMode = false;
 224
 225         priv->bNonERPPresent = false;
 226         priv->bBarkerPreambleMd = false;
 227         priv->wCurrentRate = RATE_1M;
 228         priv->byTopOFDMBasicRate = RATE_24M;
 229         priv->byTopCCKBasicRate = RATE_1M;
 230
 231         /* init MAC */
 232         MACvInitialize(priv->PortOffset);
 233
 234         /* Get Local ID */
 235         VNSvInPortB(priv->PortOffset + MAC_REG_LOCALID, &priv->byLocalID);
 236
 237         spin_lock_irqsave(&priv->lock, flags);
 238
 239         SROMvReadAllContents(priv->PortOffset, priv->abyEEPROM);
 240
 241         spin_unlock_irqrestore(&priv->lock, flags);
 242
 243         /* Get Channel range */
 244         priv->byMinChannel = 1;
 245         priv->byMaxChannel = CB_MAX_CHANNEL;
 246
 247         /* Get Antena */
 248         byValue = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_ANTENNA);
 249         if (byValue & EEP_ANTINV)
 250                 priv->bTxRxAntInv = true;
 251         else
 252                 priv->bTxRxAntInv = false;
 253
 254         byValue &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 255         /* if not set default is All */
 256         if (byValue == 0)
 257                 byValue = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 258
 259         if (byValue == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 260                 priv->byAntennaCount = 2;
 261                 priv->byTxAntennaMode = ANT_B;
 262                 priv->dwTxAntennaSel = 1;
 263                 priv->dwRxAntennaSel = 1;
 264
 265                 if (priv->bTxRxAntInv)
 266                         priv->byRxAntennaMode = ANT_A;
 267                 else
 268                         priv->byRxAntennaMode = ANT_B;
 269         } else  {
 270                 priv->byAntennaCount = 1;
 271                 priv->dwTxAntennaSel = 0;
 272                 priv->dwRxAntennaSel = 0;
 273
 274                 if (byValue & EEP_ANTENNA_AUX) {
 275                         priv->byTxAntennaMode = ANT_A;
 276
 277                         if (priv->bTxRxAntInv)
 278                                 priv->byRxAntennaMode = ANT_B;
 279                         else
 280                                 priv->byRxAntennaMode = ANT_A;
 281                 } else {
 282                         priv->byTxAntennaMode = ANT_B;
 283
 284                         if (priv->bTxRxAntInv)
 285                                 priv->byRxAntennaMode = ANT_A;
 286                         else
 287                                 priv->byRxAntennaMode = ANT_B;
 288                 }
 289         }
 290
 291         /* Set initial antenna mode */
 292         BBvSetTxAntennaMode(priv, priv->byTxAntennaMode);
 293         BBvSetRxAntennaMode(priv, priv->byRxAntennaMode);
 294
 295         /* zonetype initial */
 296         priv->byOriginalZonetype = priv->abyEEPROM[EEP_OFS_ZONETYPE];
 297
 298         if (!priv->bZoneRegExist)
 299                 priv->byZoneType = priv->abyEEPROM[EEP_OFS_ZONETYPE];
 300
 301         pr_debug("priv->byZoneType = %x\n", priv->byZoneType);
 302
 303         /* Init RF module */
 304         RFbInit(priv);
 305
 306         /* Get Desire Power Value */
 307         priv->byCurPwr = 0xFF;
 308         priv->byCCKPwr = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_PWR_CCK);
 309         priv->byOFDMPwrG = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_PWR_OFDMG);
 310
 311         /* Load power Table */
 312         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 313                 priv->abyCCKPwrTbl[ii + 1] =
 314                         SROMbyReadEmbedded(priv->PortOffset,
 315                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 316                 if (priv->abyCCKPwrTbl[ii + 1] == 0)
 317                         priv->abyCCKPwrTbl[ii+1] = priv->byCCKPwr;
 318
 319                 priv->abyOFDMPwrTbl[ii + 1] =
 320                         SROMbyReadEmbedded(priv->PortOffset,
 321                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 322                 if (priv->abyOFDMPwrTbl[ii + 1] == 0)
 323                         priv->abyOFDMPwrTbl[ii + 1] = priv->byOFDMPwrG;
 324
 325                 priv->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 326                 priv->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 327         }
 328
 329         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 330         for (ii = 11; ii < 14; ii++) {
 331                 priv->abyCCKPwrTbl[ii] = priv->abyCCKPwrTbl[10];
 332                 priv->abyOFDMPwrTbl[ii] = priv->abyOFDMPwrTbl[10];
 333         }
 334
 335         /* Load OFDM A Power Table */
 336         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 337                 priv->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 338                         SROMbyReadEmbedded(priv->PortOffset,
 339                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 340
 341                 priv->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 342                         SROMbyReadEmbedded(priv->PortOffset,
 343                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 344         }
 345
 346         if (priv->byLocalID > REV_ID_VT3253_B1) {
 347                 MACvSelectPage1(priv->PortOffset);
 348
 349                 VNSvOutPortB(priv->PortOffset + MAC_REG_MSRCTL + 1,
 350                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 351
 352                 MACvSelectPage0(priv->PortOffset);
 353         }
 354
 355         /* use relative tx timeout and 802.11i D4 */
 356         MACvWordRegBitsOn(priv->PortOffset,
 357                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 358
 359         /* set performance parameter by registry */
 360         MACvSetShortRetryLimit(priv->PortOffset, priv->byShortRetryLimit);
 361         MACvSetLongRetryLimit(priv->PortOffset, priv->byLongRetryLimit);
 362
 363         /* reset TSF counter */
 364         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 365         /* enable TSF counter */
 366         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 367
 368         /* initialize BBP registers */
 369         BBbVT3253Init(priv);
 370
 371         if (priv->bUpdateBBVGA) {
 372                 priv->byBBVGACurrent = priv->abyBBVGA[0];
 373                 priv->byBBVGANew = priv->byBBVGACurrent;
 374                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
 375         }
 376
 377         BBvSetRxAntennaMode(priv, priv->byRxAntennaMode);
 378         BBvSetTxAntennaMode(priv, priv->byTxAntennaMode);
 379
 380         /* Set BB and packet type at the same time. */
 381         /* Set Short Slot Time, xIFS, and RSPINF. */
 382         priv->wCurrentRate = RATE_54M;
 383
 384         priv->bRadioOff = false;
 385
 386         priv->byRadioCtl = SROMbyReadEmbedded(priv->PortOffset,
 387                                                  EEP_OFS_RADIOCTL);
 388         priv->bHWRadioOff = false;
 389
 390         if (priv->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 391                 /* Get GPIO */
 392                 MACvGPIOIn(priv->PortOffset, &priv->byGPIO);
 393
 394                 if (((priv->byGPIO & GPIO0_DATA) &&
 395                      !(priv->byRadioCtl & EEP_RADIOCTL_INV)) ||
 396                      (!(priv->byGPIO & GPIO0_DATA) &&
 397                      (priv->byRadioCtl & EEP_RADIOCTL_INV)))
 398                         priv->bHWRadioOff = true;
 399         }
 400
 401         if (priv->bHWRadioOff || priv->bRadioControlOff)
 402                 CARDbRadioPowerOff(priv);
 403
 404         /* get Permanent network address */
 405         SROMvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
 406         pr_debug("Network address = %pM\n", priv->abyCurrentNetAddr);
 407
 408         /* reset Tx pointer */
 409         CARDvSafeResetRx(priv);
 410         /* reset Rx pointer */
 411         CARDvSafeResetTx(priv);
 412
 413         if (priv->byLocalID <= REV_ID_VT3253_A1)
 414                 MACvRegBitsOn(priv->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 415
 416         /* Turn On Rx DMA */
 417         MACvReceive0(priv->PortOffset);
 418         MACvReceive1(priv->PortOffset);
 419
 420         /* start the adapter */
 421         MACvStart(priv->PortOffset);
 422 }
 423
 424 static void device_print_info(struct vnt_private *priv)
 425 {
 426         dev_info(&priv->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 427                  priv->abyCurrentNetAddr, (unsigned long)priv->ioaddr,
 428                  (unsigned long)priv->PortOffset, priv->pcid->irq);
 429 }
 430
 431 static void device_free_info(struct vnt_private *priv)
 432 {
 433         if (!priv)
 434                 return;
 435
 436         if (priv->mac_hw)
 437                 ieee80211_unregister_hw(priv->hw);
 438
 439         if (priv->PortOffset)
 440                 iounmap(priv->PortOffset);
 441
 442         if (priv->pcid)
 443                 pci_release_regions(priv->pcid);
 444
 445         if (priv->hw)
 446                 ieee80211_free_hw(priv->hw);
 447 }
 448
 449 static bool device_init_rings(struct vnt_private *priv)
 450 {
 451         void *vir_pool;
 452
 453         /*allocate all RD/TD rings a single pool*/
 454         vir_pool = dma_zalloc_coherent(&priv->pcid->dev,
 455                                        priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 456                                        priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 457                                        priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 458                                        priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 459                                        &priv->pool_dma, GFP_ATOMIC);
 460         if (vir_pool == NULL) {
 461                 dev_err(&priv->pcid->dev, "allocate desc dma memory failed\n");
 462                 return false;
 463         }
 464
 465         priv->aRD0Ring = vir_pool;
 466         priv->aRD1Ring = vir_pool +
 467                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 468
 469         priv->rd0_pool_dma = priv->pool_dma;
 470         priv->rd1_pool_dma = priv->rd0_pool_dma +
 471                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 472
 473         priv->tx0_bufs = dma_zalloc_coherent(&priv->pcid->dev,
 474                                              priv->opts.tx_descs[0] * PKT_BUF_SZ +
 475                                              priv->opts.tx_descs[1] * PKT_BUF_SZ +
 476                                              CB_BEACON_BUF_SIZE +
 477                                              CB_MAX_BUF_SIZE,
 478                                              &priv->tx_bufs_dma0,
 479                                              GFP_ATOMIC);
 480         if (priv->tx0_bufs == NULL) {
 481                 dev_err(&priv->pcid->dev, "allocate buf dma memory failed\n");
 482
 483                 dma_free_coherent(&priv->pcid->dev,
 484                                   priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 485                                   priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 486                                   priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 487                                   priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 488                                   vir_pool, priv->pool_dma);
 489                 return false;
 490         }
 491
 492         priv->td0_pool_dma = priv->rd1_pool_dma +
 493                 priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);
 494
 495         priv->td1_pool_dma = priv->td0_pool_dma +
 496                 priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);
 497
 498         /* vir_pool: pvoid type */
 499         priv->apTD0Rings = vir_pool
 500                 + priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
 501                 + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);
 502
 503         priv->apTD1Rings = vir_pool
 504                 + priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
 505                 + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc)
 506                 + priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);
 507
 508         priv->tx1_bufs = priv->tx0_bufs +
 509                 priv->opts.tx_descs[0] * PKT_BUF_SZ;
 510
 511         priv->tx_beacon_bufs = priv->tx1_bufs +
 512                 priv->opts.tx_descs[1] * PKT_BUF_SZ;
 513
 514         priv->pbyTmpBuff = priv->tx_beacon_bufs +
 515                 CB_BEACON_BUF_SIZE;
 516
 517         priv->tx_bufs_dma1 = priv->tx_bufs_dma0 +
 518                 priv->opts.tx_descs[0] * PKT_BUF_SZ;
 519
 520         priv->tx_beacon_dma = priv->tx_bufs_dma1 +
 521                 priv->opts.tx_descs[1] * PKT_BUF_SZ;
 522
 523         return true;
 524 }
 525
 526 static void device_free_rings(struct vnt_private *priv)
 527 {
 528         dma_free_coherent(&priv->pcid->dev,
 529                           priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 530                           priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 531                           priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 532                           priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 533                           priv->aRD0Ring, priv->pool_dma);
 534
 535         if (priv->tx0_bufs)
 536                 dma_free_coherent(&priv->pcid->dev,
 537                                   priv->opts.tx_descs[0] * PKT_BUF_SZ +
 538                                   priv->opts.tx_descs[1] * PKT_BUF_SZ +
 539                                   CB_BEACON_BUF_SIZE +
 540                                   CB_MAX_BUF_SIZE,
 541                                   priv->tx0_bufs, priv->tx_bufs_dma0);
 542 }
 543
 544 static void device_init_rd0_ring(struct vnt_private *priv)
 545 {
 546         int i;
 547         dma_addr_t      curr = priv->rd0_pool_dma;
 548         struct vnt_rx_desc *desc;
 549
 550         /* Init the RD0 ring entries */
 551         for (i = 0; i < priv->opts.rx_descs0;
 552              i ++, curr += sizeof(struct vnt_rx_desc)) {
 553                 desc = &priv->aRD0Ring[i];
 554                 desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_ATOMIC);
 555
 556                 if (!device_alloc_rx_buf(priv, desc))
 557                         dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");
 558
 559                 desc->next = &(priv->aRD0Ring[(i+1) % priv->opts.rx_descs0]);
 560                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 561         }
 562
 563         if (i > 0)
 564                 priv->aRD0Ring[i-1].next_desc = cpu_to_le32(priv->rd0_pool_dma);
 565         priv->pCurrRD[0] = &priv->aRD0Ring[0];
 566 }
 567
 568 static void device_init_rd1_ring(struct vnt_private *priv)
 569 {
 570         int i;
 571         dma_addr_t      curr = priv->rd1_pool_dma;
 572         struct vnt_rx_desc *desc;
 573
 574         /* Init the RD1 ring entries */
 575         for (i = 0; i < priv->opts.rx_descs1;
 576              i ++, curr += sizeof(struct vnt_rx_desc)) {
 577                 desc = &priv->aRD1Ring[i];
 578                 desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_ATOMIC);
 579
 580                 if (!device_alloc_rx_buf(priv, desc))
 581                         dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");
 582
 583                 desc->next = &(priv->aRD1Ring[(i+1) % priv->opts.rx_descs1]);
 584                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 585         }
 586
 587         if (i > 0)
 588                 priv->aRD1Ring[i-1].next_desc = cpu_to_le32(priv->rd1_pool_dma);
 589         priv->pCurrRD[1] = &priv->aRD1Ring[0];
 590 }
 591
 592 static void device_free_rd0_ring(struct vnt_private *priv)
 593 {
 594         int i;
 595
 596         for (i = 0; i < priv->opts.rx_descs0; i++) {
 597                 struct vnt_rx_desc *desc = &(priv->aRD0Ring[i]);
 598                 struct vnt_rd_info *rd_info = desc->rd_info;
 599
 600                 dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
 601                                  priv->rx_buf_sz, DMA_FROM_DEVICE);
 602
 603                 dev_kfree_skb(rd_info->skb);
 604
 605                 kfree(desc->rd_info);
 606         }
 607 }
 608
 609 static void device_free_rd1_ring(struct vnt_private *priv)
 610 {
 611         int i;
 612
 613         for (i = 0; i < priv->opts.rx_descs1; i++) {
 614                 struct vnt_rx_desc *desc = &priv->aRD1Ring[i];
 615                 struct vnt_rd_info *rd_info = desc->rd_info;
 616
 617                 dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
 618                                  priv->rx_buf_sz, DMA_FROM_DEVICE);
 619
 620                 dev_kfree_skb(rd_info->skb);
 621
 622                 kfree(desc->rd_info);
 623         }
 624 }
 625
 626 static void device_init_td0_ring(struct vnt_private *priv)
 627 {
 628         int i;
 629         dma_addr_t  curr;
 630         struct vnt_tx_desc *desc;
 631
 632         curr = priv->td0_pool_dma;
 633         for (i = 0; i < priv->opts.tx_descs[0];
 634              i++, curr += sizeof(struct vnt_tx_desc)) {
 635                 desc = &priv->apTD0Rings[i];
 636                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_ATOMIC);
 637
 638                 desc->td_info->buf = priv->tx0_bufs + i * PKT_BUF_SZ;
 639                 desc->td_info->buf_dma = priv->tx_bufs_dma0 + i * PKT_BUF_SZ;
 640
 641                 desc->next = &(priv->apTD0Rings[(i+1) % priv->opts.tx_descs[0]]);
 642                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 643         }
 644
 645         if (i > 0)
 646                 priv->apTD0Rings[i-1].next_desc = cpu_to_le32(priv->td0_pool_dma);
 647         priv->apTailTD[0] = priv->apCurrTD[0] = &priv->apTD0Rings[0];
 648 }
 649
 650 static void device_init_td1_ring(struct vnt_private *priv)
 651 {
 652         int i;
 653         dma_addr_t  curr;
 654         struct vnt_tx_desc *desc;
 655
 656         /* Init the TD ring entries */
 657         curr = priv->td1_pool_dma;
 658         for (i = 0; i < priv->opts.tx_descs[1];
 659              i++, curr += sizeof(struct vnt_tx_desc)) {
 660                 desc = &priv->apTD1Rings[i];
 661                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_ATOMIC);
 662
 663                 desc->td_info->buf = priv->tx1_bufs + i * PKT_BUF_SZ;
 664                 desc->td_info->buf_dma = priv->tx_bufs_dma1 + i * PKT_BUF_SZ;
 665
 666                 desc->next = &(priv->apTD1Rings[(i + 1) % priv->opts.tx_descs[1]]);
 667                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 668         }
 669
 670         if (i > 0)
 671                 priv->apTD1Rings[i-1].next_desc = cpu_to_le32(priv->td1_pool_dma);
 672         priv->apTailTD[1] = priv->apCurrTD[1] = &priv->apTD1Rings[0];
 673 }
 674
 675 static void device_free_td0_ring(struct vnt_private *priv)
 676 {
 677         int i;
 678
 679         for (i = 0; i < priv->opts.tx_descs[0]; i++) {
 680                 struct vnt_tx_desc *desc = &priv->apTD0Rings[i];
 681                 struct vnt_td_info *td_info = desc->td_info;
 682
 683                 dev_kfree_skb(td_info->skb);
 684                 kfree(desc->td_info);
 685         }
 686 }
 687
 688 static void device_free_td1_ring(struct vnt_private *priv)
 689 {
 690         int i;
 691
 692         for (i = 0; i < priv->opts.tx_descs[1]; i++) {
 693                 struct vnt_tx_desc *desc = &priv->apTD1Rings[i];
 694                 struct vnt_td_info *td_info = desc->td_info;
 695
 696                 dev_kfree_skb(td_info->skb);
 697                 kfree(desc->td_info);
 698         }
 699 }
 700
 701 /*-----------------------------------------------------------------*/
 702
 703 static int device_rx_srv(struct vnt_private *priv, unsigned int idx)
 704 {
 705         struct vnt_rx_desc *rd;
 706         int works = 0;
 707
 708         for (rd = priv->pCurrRD[idx];
 709              rd->rd0.owner == OWNED_BY_HOST;
 710              rd = rd->next) {
 711                 if (works++ > 15)
 712                         break;
 713
 714                 if (!rd->rd_info->skb)
 715                         break;
 716
 717                 if (vnt_receive_frame(priv, rd)) {
 718                         if (!device_alloc_rx_buf(priv, rd)) {
 719                                 dev_err(&priv->pcid->dev,
 720                                         "can not allocate rx buf\n");
 721                                 break;
 722                         }
 723                 }
 724                 rd->rd0.owner = OWNED_BY_NIC;
 725         }
 726
 727         priv->pCurrRD[idx] = rd;
 728
 729         return works;
 730 }
 731
 732 static bool device_alloc_rx_buf(struct vnt_private *priv,
 733                                 struct vnt_rx_desc *rd)
 734 {
 735         struct vnt_rd_info *rd_info = rd->rd_info;
 736
 737         rd_info->skb = dev_alloc_skb((int)priv->rx_buf_sz);
 738         if (rd_info->skb == NULL)
 739                 return false;
 740
 741         rd_info->skb_dma =
 742                 dma_map_single(&priv->pcid->dev,
 743                                skb_put(rd_info->skb, skb_tailroom(rd_info->skb)),
 744                                priv->rx_buf_sz, DMA_FROM_DEVICE);
 745
 746         *((unsigned int *)&rd->rd0) = 0; /* FIX cast */
 747
 748         rd->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
 749         rd->rd0.owner = OWNED_BY_NIC;
 750         rd->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
 751         rd->buff_addr = cpu_to_le32(rd_info->skb_dma);
 752
 753         return true;
 754 }
 755
 756 static const u8 fallback_rate0[5][5] = {
 757         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 758         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 759         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 760         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 761         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 762 };
 763
 764 static const u8 fallback_rate1[5][5] = {
 765         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 766         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 767         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 768         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 769         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 770 };
 771
 772 static int vnt_int_report_rate(struct vnt_private *priv,
 773                                struct vnt_td_info *context, u8 tsr0, u8 tsr1)
 774 {
 775         struct vnt_tx_fifo_head *fifo_head;
 776         struct ieee80211_tx_info *info;
 777         struct ieee80211_rate *rate;
 778         u16 fb_option;
 779         u8 tx_retry = (tsr0 & TSR0_NCR);
 780         s8 idx;
 781
 782         if (!context)
 783                 return -ENOMEM;
 784
 785         if (!context->skb)
 786                 return -EINVAL;
 787
 788         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 789         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 790                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 791
 792         info = IEEE80211_SKB_CB(context->skb);
 793         idx = info->control.rates[0].idx;
 794
 795         if (fb_option && !(tsr1 & TSR1_TERR)) {
 796                 u8 tx_rate;
 797                 u8 retry = tx_retry;
 798
 799                 rate = ieee80211_get_tx_rate(priv->hw, info);
 800                 tx_rate = rate->hw_value - RATE_18M;
 801
 802                 if (retry > 4)
 803                         retry = 4;
 804
 805                 if (fb_option & FIFOCTL_AUTO_FB_0)
 806                         tx_rate = fallback_rate0[tx_rate][retry];
 807                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 808                         tx_rate = fallback_rate1[tx_rate][retry];
 809
 810                 if (info->band == IEEE80211_BAND_5GHZ)
 811                         idx = tx_rate - RATE_6M;
 812                 else
 813                         idx = tx_rate;
 814         }
 815
 816         ieee80211_tx_info_clear_status(info);
 817
 818         info->status.rates[0].count = tx_retry;
 819
 820         if (!(tsr1 & TSR1_TERR)) {
 821                 info->status.rates[0].idx = idx;
 822
 823                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 824                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 825                 else
 826                         info->flags |= IEEE80211_TX_STAT_ACK;
 827         }
 828
 829         return 0;
 830 }
 831
 832 static int device_tx_srv(struct vnt_private *priv, unsigned int idx)
 833 {
 834         struct vnt_tx_desc *desc;
 835         int                      works = 0;
 836         unsigned char byTsr0;
 837         unsigned char byTsr1;
 838
 839         for (desc = priv->apTailTD[idx]; priv->iTDUsed[idx] > 0; desc = desc->next) {
 840                 if (desc->td0.owner == OWNED_BY_NIC)
 841                         break;
 842                 if (works++ > 15)
 843                         break;
 844
 845                 byTsr0 = desc->td0.tsr0;
 846                 byTsr1 = desc->td0.tsr1;
 847
 848                 /* Only the status of first TD in the chain is correct */
 849                 if (desc->td1.tcr & TCR_STP) {
 850                         if ((desc->td_info->flags & TD_FLAGS_NETIF_SKB) != 0) {
 851                                 if (!(byTsr1 & TSR1_TERR)) {
 852                                         if (byTsr0 != 0) {
 853                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 854                                                          (int)idx, byTsr1,
 855                                                          byTsr0);
 856                                         }
 857                                 } else {
 858                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 859                                                  (int)idx, byTsr1, byTsr0);
 860                                 }
 861                         }
 862
 863                         if (byTsr1 & TSR1_TERR) {
 864                                 if ((desc->td_info->flags & TD_FLAGS_PRIV_SKB) != 0) {
 865                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 866                                                  (int)idx, byTsr1, byTsr0);
 867                                 }
 868                         }
 869
 870                         vnt_int_report_rate(priv, desc->td_info, byTsr0, byTsr1);
 871
 872                         device_free_tx_buf(priv, desc);
 873                         priv->iTDUsed[idx]--;
 874                 }
 875         }
 876
 877         priv->apTailTD[idx] = desc;
 878
 879         return works;
 880 }
 881
 882 static void device_error(struct vnt_private *priv, unsigned short status)
 883 {
 884         if (status & ISR_FETALERR) {
 885                 dev_err(&priv->pcid->dev, "Hardware fatal error\n");
 886
 887                 MACbShutdown(priv->PortOffset);
 888                 return;
 889         }
 890 }
 891
 892 static void device_free_tx_buf(struct vnt_private *priv,
 893                                struct vnt_tx_desc *desc)
 894 {
 895         struct vnt_td_info *td_info = desc->td_info;
 896         struct sk_buff *skb = td_info->skb;
 897
 898         if (skb)
 899                 ieee80211_tx_status_irqsafe(priv->hw, skb);
 900
 901         td_info->skb = NULL;
 902         td_info->flags = 0;
 903 }
 904
 905 static void vnt_check_bb_vga(struct vnt_private *priv)
 906 {
 907         long dbm;
 908         int i;
 909
 910         if (!priv->bUpdateBBVGA)
 911                 return;
 912
 913         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
 914                 return;
 915
 916         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
 917                 return;
 918
 919         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
 920
 921         for (i = 0; i < BB_VGA_LEVEL; i++) {
 922                 if (dbm < priv->ldBmThreshold[i]) {
 923                         priv->byBBVGANew = priv->abyBBVGA[i];
 924                         break;
 925                 }
 926         }
 927
 928         if (priv->byBBVGANew == priv->byBBVGACurrent) {
 929                 priv->uBBVGADiffCount = 1;
 930                 return;
 931         }
 932
 933         priv->uBBVGADiffCount++;
 934
 935         if (priv->uBBVGADiffCount == 1) {
 936                 /* first VGA diff gain */
 937                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
 938
 939                 dev_dbg(&priv->pcid->dev,
 940                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
 941                         (int)dbm, priv->byBBVGANew,
 942                         priv->byBBVGACurrent,
 943                         (int)priv->uBBVGADiffCount);
 944         }
 945
 946         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
 947                 dev_dbg(&priv->pcid->dev,
 948                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
 949                         (int)dbm, priv->byBBVGANew,
 950                         priv->byBBVGACurrent,
 951                         (int)priv->uBBVGADiffCount);
 952
 953                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
 954         }
 955 }
 956
 957 static void vnt_interrupt_process(struct vnt_private *priv)
 958 {
 959         struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
 960         int             max_count = 0;
 961         u32 mib_counter;
 962         u32 isr;
 963         unsigned long flags;
 964
 965         MACvReadISR(priv->PortOffset, &isr);
 966
 967         if (isr == 0)
 968                 return;
 969
 970         if (isr == 0xffffffff) {
 971                 pr_debug("isr = 0xffff\n");
 972                 return;
 973         }
 974
 975         MACvIntDisable(priv->PortOffset);
 976
 977         spin_lock_irqsave(&priv->lock, flags);
 978
 979         /* Read low level stats */
 980         MACvReadMIBCounter(priv->PortOffset, &mib_counter);
 981
 982         low_stats->dot11RTSSuccessCount += mib_counter & 0xff;
 983         low_stats->dot11RTSFailureCount += (mib_counter >> 8) & 0xff;
 984         low_stats->dot11ACKFailureCount += (mib_counter >> 16) & 0xff;
 985         low_stats->dot11FCSErrorCount += (mib_counter >> 24) & 0xff;
 986
 987         /*
 988          * TBD....
 989          * Must do this after doing rx/tx, cause ISR bit is slow
 990          * than RD/TD write back
 991          * update ISR counter
 992          */
 993         while (isr && priv->vif) {
 994                 MACvWriteISR(priv->PortOffset, isr);
 995
 996                 if (isr & ISR_FETALERR) {
 997                         pr_debug(" ISR_FETALERR\n");
 998                         VNSvOutPortB(priv->PortOffset + MAC_REG_SOFTPWRCTL, 0);
 999                         VNSvOutPortW(priv->PortOffset +
1000                                      MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1001                         device_error(priv, isr);
1002                 }
1003
1004                 if (isr & ISR_TBTT) {
1005                         if (priv->op_mode != NL80211_IFTYPE_ADHOC)
1006                                 vnt_check_bb_vga(priv);
1007
1008                         priv->bBeaconSent = false;
1009                         if (priv->bEnablePSMode)
1010                                 PSbIsNextTBTTWakeUp((void *)priv);
1011
1012                         if ((priv->op_mode == NL80211_IFTYPE_AP ||
1013                             priv->op_mode == NL80211_IFTYPE_ADHOC) &&
1014                             priv->vif->bss_conf.enable_beacon) {
1015                                 MACvOneShotTimer1MicroSec(priv->PortOffset,
1016                                                           (priv->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1017                         }
1018
1019                         /* TODO: adhoc PS mode */
1020
1021                 }
1022
1023                 if (isr & ISR_BNTX) {
1024                         if (priv->op_mode == NL80211_IFTYPE_ADHOC) {
1025                                 priv->bIsBeaconBufReadySet = false;
1026                                 priv->cbBeaconBufReadySetCnt = 0;
1027                         }
1028
1029                         priv->bBeaconSent = true;
1030                 }
1031
1032                 if (isr & ISR_RXDMA0)
1033                         max_count += device_rx_srv(priv, TYPE_RXDMA0);
1034
1035                 if (isr & ISR_RXDMA1)
1036                         max_count += device_rx_srv(priv, TYPE_RXDMA1);
1037
1038                 if (isr & ISR_TXDMA0)
1039                         max_count += device_tx_srv(priv, TYPE_TXDMA0);
1040
1041                 if (isr & ISR_AC0DMA)
1042                         max_count += device_tx_srv(priv, TYPE_AC0DMA);
1043
1044                 if (isr & ISR_SOFTTIMER1) {
1045                         if (priv->vif->bss_conf.enable_beacon)
1046                                 vnt_beacon_make(priv, priv->vif);
1047                 }
1048
1049                 /* If both buffers available wake the queue */
1050                 if (AVAIL_TD(priv, TYPE_TXDMA0) &&
1051                     AVAIL_TD(priv, TYPE_AC0DMA) &&
1052                     ieee80211_queue_stopped(priv->hw, 0))
1053                         ieee80211_wake_queues(priv->hw);
1054
1055                 MACvReadISR(priv->PortOffset, &isr);
1056
1057                 MACvReceive0(priv->PortOffset);
1058                 MACvReceive1(priv->PortOffset);
1059
1060                 if (max_count > priv->opts.int_works)
1061                         break;
1062         }
1063
1064         spin_unlock_irqrestore(&priv->lock, flags);
1065
1066         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1067 }
1068
1069 static void vnt_interrupt_work(struct work_struct *work)
1070 {
1071         struct vnt_private *priv =
1072                 container_of(work, struct vnt_private, interrupt_work);
1073
1074         if (priv->vif)
1075                 vnt_interrupt_process(priv);
1076 }
1077
1078 static irqreturn_t vnt_interrupt(int irq,  void *arg)
1079 {
1080         struct vnt_private *priv = arg;
1081
1082         if (priv->vif)
1083                 schedule_work(&priv->interrupt_work);
1084
1085         return IRQ_HANDLED;
1086 }
1087
1088 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1089 {
1090         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1091         struct vnt_tx_desc *head_td;
1092         u32 dma_idx;
1093         unsigned long flags;
1094
1095         spin_lock_irqsave(&priv->lock, flags);
1096
1097         if (ieee80211_is_data(hdr->frame_control))
1098                 dma_idx = TYPE_AC0DMA;
1099         else
1100                 dma_idx = TYPE_TXDMA0;
1101
1102         if (AVAIL_TD(priv, dma_idx) < 1) {
1103                 spin_unlock_irqrestore(&priv->lock, flags);
1104                 ieee80211_stop_queues(priv->hw);
1105                 return -ENOMEM;
1106         }
1107
1108         head_td = priv->apCurrTD[dma_idx];
1109
1110         head_td->td1.tcr = 0;
1111
1112         head_td->td_info->skb = skb;
1113
1114         if (dma_idx == TYPE_AC0DMA)
1115                 head_td->td_info->flags = TD_FLAGS_NETIF_SKB;
1116
1117         priv->apCurrTD[dma_idx] = head_td->next;
1118
1119         spin_unlock_irqrestore(&priv->lock, flags);
1120
1121         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1122
1123         spin_lock_irqsave(&priv->lock, flags);
1124
1125         priv->bPWBitOn = false;
1126
1127         /* Set TSR1 & ReqCount in TxDescHead */
1128         head_td->td1.tcr |= (TCR_STP | TCR_EDP | EDMSDU);
1129         head_td->td1.req_count = cpu_to_le16(head_td->td_info->req_count);
1130
1131         head_td->buff_addr = cpu_to_le32(head_td->td_info->buf_dma);
1132
1133         /* Poll Transmit the adapter */
1134         wmb();
1135         head_td->td0.owner = OWNED_BY_NIC;
1136         wmb(); /* second memory barrier */
1137
1138         if (head_td->td_info->flags & TD_FLAGS_NETIF_SKB)
1139                 MACvTransmitAC0(priv->PortOffset);
1140         else
1141                 MACvTransmit0(priv->PortOffset);
1142
1143         priv->iTDUsed[dma_idx]++;
1144
1145         spin_unlock_irqrestore(&priv->lock, flags);
1146
1147         return 0;
1148 }
1149
1150 static void vnt_tx_80211(struct ieee80211_hw *hw,
1151                          struct ieee80211_tx_control *control,
1152                          struct sk_buff *skb)
1153 {
1154         struct vnt_private *priv = hw->priv;
1155
1156         if (vnt_tx_packet(priv, skb))
1157                 ieee80211_free_txskb(hw, skb);
1158 }
1159
1160 static int vnt_start(struct ieee80211_hw *hw)
1161 {
1162         struct vnt_private *priv = hw->priv;
1163         int ret;
1164
1165         priv->rx_buf_sz = PKT_BUF_SZ;
1166         if (!device_init_rings(priv))
1167                 return -ENOMEM;
1168
1169         ret = request_irq(priv->pcid->irq, &vnt_interrupt,
1170                           IRQF_SHARED, "vt6655", priv);
1171         if (ret) {
1172                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1173                 return ret;
1174         }
1175
1176         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1177         device_init_rd0_ring(priv);
1178         device_init_rd1_ring(priv);
1179         device_init_td0_ring(priv);
1180         device_init_td1_ring(priv);
1181
1182         device_init_registers(priv);
1183
1184         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1185         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1186
1187         ieee80211_wake_queues(hw);
1188
1189         return 0;
1190 }
1191
1192 static void vnt_stop(struct ieee80211_hw *hw)
1193 {
1194         struct vnt_private *priv = hw->priv;
1195
1196         ieee80211_stop_queues(hw);
1197
1198         cancel_work_sync(&priv->interrupt_work);
1199
1200         MACbShutdown(priv->PortOffset);
1201         MACbSoftwareReset(priv->PortOffset);
1202         CARDbRadioPowerOff(priv);
1203
1204         device_free_td0_ring(priv);
1205         device_free_td1_ring(priv);
1206         device_free_rd0_ring(priv);
1207         device_free_rd1_ring(priv);
1208         device_free_rings(priv);
1209
1210         free_irq(priv->pcid->irq, priv);
1211 }
1212
1213 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1214 {
1215         struct vnt_private *priv = hw->priv;
1216
1217         priv->vif = vif;
1218
1219         switch (vif->type) {
1220         case NL80211_IFTYPE_STATION:
1221                 break;
1222         case NL80211_IFTYPE_ADHOC:
1223                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1224
1225                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1226
1227                 break;
1228         case NL80211_IFTYPE_AP:
1229                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1230
1231                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1232
1233                 break;
1234         default:
1235                 return -EOPNOTSUPP;
1236         }
1237
1238         priv->op_mode = vif->type;
1239
1240         return 0;
1241 }
1242
1243 static void vnt_remove_interface(struct ieee80211_hw *hw,
1244                                  struct ieee80211_vif *vif)
1245 {
1246         struct vnt_private *priv = hw->priv;
1247
1248         switch (vif->type) {
1249         case NL80211_IFTYPE_STATION:
1250                 break;
1251         case NL80211_IFTYPE_ADHOC:
1252                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1253                 MACvRegBitsOff(priv->PortOffset,
1254                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1255                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1256                 break;
1257         case NL80211_IFTYPE_AP:
1258                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1259                 MACvRegBitsOff(priv->PortOffset,
1260                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1261                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1262                 break;
1263         default:
1264                 break;
1265         }
1266
1267         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1268 }
1269
1270
1271 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1272 {
1273         struct vnt_private *priv = hw->priv;
1274         struct ieee80211_conf *conf = &hw->conf;
1275         u8 bb_type;
1276
1277         if (changed & IEEE80211_CONF_CHANGE_PS) {
1278                 if (conf->flags & IEEE80211_CONF_PS)
1279                         PSvEnablePowerSaving(priv, conf->listen_interval);
1280                 else
1281                         PSvDisablePowerSaving(priv);
1282         }
1283
1284         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1285             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1286                 set_channel(priv, conf->chandef.chan);
1287
1288                 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
1289                         bb_type = BB_TYPE_11A;
1290                 else
1291                         bb_type = BB_TYPE_11G;
1292
1293                 if (priv->byBBType != bb_type) {
1294                         priv->byBBType = bb_type;
1295
1296                         CARDbSetPhyParameter(priv, priv->byBBType);
1297                 }
1298         }
1299
1300         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1301                 if (priv->byBBType == BB_TYPE_11B)
1302                         priv->wCurrentRate = RATE_1M;
1303                 else
1304                         priv->wCurrentRate = RATE_54M;
1305
1306                 RFbSetPower(priv, priv->wCurrentRate,
1307                             conf->chandef.chan->hw_value);
1308         }
1309
1310         return 0;
1311 }
1312
1313 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1314                 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
1315                 u32 changed)
1316 {
1317         struct vnt_private *priv = hw->priv;
1318
1319         priv->current_aid = conf->aid;
1320
1321         if (changed & BSS_CHANGED_BSSID && conf->bssid) {
1322                 unsigned long flags;
1323
1324                 spin_lock_irqsave(&priv->lock, flags);
1325
1326                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1327
1328                 spin_unlock_irqrestore(&priv->lock, flags);
1329         }
1330
1331         if (changed & BSS_CHANGED_BASIC_RATES) {
1332                 priv->basic_rates = conf->basic_rates;
1333
1334                 CARDvUpdateBasicTopRate(priv);
1335
1336                 dev_dbg(&priv->pcid->dev,
1337                         "basic rates %x\n", conf->basic_rates);
1338         }
1339
1340         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1341                 if (conf->use_short_preamble) {
1342                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1343                         priv->byPreambleType = true;
1344                 } else {
1345                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1346                         priv->byPreambleType = false;
1347                 }
1348         }
1349
1350         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1351                 if (conf->use_cts_prot)
1352                         MACvEnableProtectMD(priv->PortOffset);
1353                 else
1354                         MACvDisableProtectMD(priv->PortOffset);
1355         }
1356
1357         if (changed & BSS_CHANGED_ERP_SLOT) {
1358                 if (conf->use_short_slot)
1359                         priv->bShortSlotTime = true;
1360                 else
1361                         priv->bShortSlotTime = false;
1362
1363                 CARDbSetPhyParameter(priv, priv->byBBType);
1364                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1365         }
1366
1367         if (changed & BSS_CHANGED_TXPOWER)
1368                 RFbSetPower(priv, priv->wCurrentRate,
1369                             conf->chandef.chan->hw_value);
1370
1371         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1372                 dev_dbg(&priv->pcid->dev,
1373                         "Beacon enable %d\n", conf->enable_beacon);
1374
1375                 if (conf->enable_beacon) {
1376                         vnt_beacon_enable(priv, vif, conf);
1377
1378                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1379                                       TCR_AUTOBCNTX);
1380                 } else {
1381                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1382                                        TCR_AUTOBCNTX);
1383                 }
1384         }
1385
1386         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
1387             priv->op_mode != NL80211_IFTYPE_AP) {
1388                 if (conf->assoc && conf->beacon_rate) {
1389                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1390                                        conf->sync_tsf);
1391
1392                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1393
1394                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1395                 } else {
1396                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1397                                      TFTCTL_TSFCNTRST);
1398                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1399                                      TFTCTL_TSFCNTREN);
1400                 }
1401         }
1402 }
1403
1404 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1405         struct netdev_hw_addr_list *mc_list)
1406 {
1407         struct vnt_private *priv = hw->priv;
1408         struct netdev_hw_addr *ha;
1409         u64 mc_filter = 0;
1410         u32 bit_nr = 0;
1411
1412         netdev_hw_addr_list_for_each(ha, mc_list) {
1413                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1414
1415                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1416         }
1417
1418         priv->mc_list_count = mc_list->count;
1419
1420         return mc_filter;
1421 }
1422
1423 static void vnt_configure(struct ieee80211_hw *hw,
1424         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
1425 {
1426         struct vnt_private *priv = hw->priv;
1427         u8 rx_mode = 0;
1428
1429         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
1430
1431         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1432
1433         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1434
1435         if (changed_flags & FIF_ALLMULTI) {
1436                 if (*total_flags & FIF_ALLMULTI) {
1437                         unsigned long flags;
1438
1439                         spin_lock_irqsave(&priv->lock, flags);
1440
1441                         if (priv->mc_list_count > 2) {
1442                                 MACvSelectPage1(priv->PortOffset);
1443
1444                                 VNSvOutPortD(priv->PortOffset +
1445                                              MAC_REG_MAR0, 0xffffffff);
1446                                 VNSvOutPortD(priv->PortOffset +
1447                                             MAC_REG_MAR0 + 4, 0xffffffff);
1448
1449                                 MACvSelectPage0(priv->PortOffset);
1450                         } else {
1451                                 MACvSelectPage1(priv->PortOffset);
1452
1453                                 VNSvOutPortD(priv->PortOffset +
1454                                              MAC_REG_MAR0, (u32)multicast);
1455                                 VNSvOutPortD(priv->PortOffset +
1456                                              MAC_REG_MAR0 + 4,
1457                                              (u32)(multicast >> 32));
1458
1459                                 MACvSelectPage0(priv->PortOffset);
1460                         }
1461
1462                         spin_unlock_irqrestore(&priv->lock, flags);
1463
1464                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1465                 } else {
1466                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1467                 }
1468         }
1469
1470         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1471                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1472
1473                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1474                         rx_mode &= ~RCR_BSSID;
1475                 else
1476                         rx_mode |= RCR_BSSID;
1477         }
1478
1479         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1480
1481         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1482 }
1483
1484 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1485         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1486                 struct ieee80211_key_conf *key)
1487 {
1488         struct vnt_private *priv = hw->priv;
1489
1490         switch (cmd) {
1491         case SET_KEY:
1492                 if (vnt_set_keys(hw, sta, vif, key))
1493                         return -EOPNOTSUPP;
1494                 break;
1495         case DISABLE_KEY:
1496                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1497                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1498         default:
1499                 break;
1500         }
1501
1502         return 0;
1503 }
1504
1505 static int vnt_get_stats(struct ieee80211_hw *hw,
1506                          struct ieee80211_low_level_stats *stats)
1507 {
1508         struct vnt_private *priv = hw->priv;
1509
1510         memcpy(stats, &priv->low_stats, sizeof(*stats));
1511
1512         return 0;
1513 }
1514
1515 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1516 {
1517         struct vnt_private *priv = hw->priv;
1518         u64 tsf;
1519
1520         CARDbGetCurrentTSF(priv, &tsf);
1521
1522         return tsf;
1523 }
1524
1525 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1526                         u64 tsf)
1527 {
1528         struct vnt_private *priv = hw->priv;
1529
1530         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1531 }
1532
1533 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1534 {
1535         struct vnt_private *priv = hw->priv;
1536
1537         /* reset TSF counter */
1538         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1539 }
1540
1541 static const struct ieee80211_ops vnt_mac_ops = {
1542         .tx                     = vnt_tx_80211,
1543         .start                  = vnt_start,
1544         .stop                   = vnt_stop,
1545         .add_interface          = vnt_add_interface,
1546         .remove_interface       = vnt_remove_interface,
1547         .config                 = vnt_config,
1548         .bss_info_changed       = vnt_bss_info_changed,
1549         .prepare_multicast      = vnt_prepare_multicast,
1550         .configure_filter       = vnt_configure,
1551         .set_key                = vnt_set_key,
1552         .get_stats              = vnt_get_stats,
1553         .get_tsf                = vnt_get_tsf,
1554         .set_tsf                = vnt_set_tsf,
1555         .reset_tsf              = vnt_reset_tsf,
1556 };
1557
1558 static int vnt_init(struct vnt_private *priv)
1559 {
1560         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1561
1562         vnt_init_bands(priv);
1563
1564         if (ieee80211_register_hw(priv->hw))
1565                 return -ENODEV;
1566
1567         priv->mac_hw = true;
1568
1569         CARDbRadioPowerOff(priv);
1570
1571         return 0;
1572 }
1573
1574 static int
1575 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1576 {
1577         struct vnt_private *priv;
1578         struct ieee80211_hw *hw;
1579         struct wiphy *wiphy;
1580         int         rc;
1581
1582         dev_notice(&pcid->dev,
1583                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1584
1585         dev_notice(&pcid->dev,
1586                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1587
1588         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1589         if (!hw) {
1590                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1591                 return -ENOMEM;
1592         }
1593
1594         priv = hw->priv;
1595         priv->pcid = pcid;
1596
1597         spin_lock_init(&priv->lock);
1598
1599         priv->hw = hw;
1600
1601         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1602
1603         if (pci_enable_device(pcid)) {
1604                 device_free_info(priv);
1605                 return -ENODEV;
1606         }
1607
1608         dev_dbg(&pcid->dev,
1609                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1610
1611         pci_set_master(pcid);
1612
1613         priv->memaddr = pci_resource_start(pcid, 0);
1614         priv->ioaddr = pci_resource_start(pcid, 1);
1615         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1616                                    256);
1617         if (!priv->PortOffset) {
1618                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1619                 device_free_info(priv);
1620                 return -ENODEV;
1621         }
1622
1623         rc = pci_request_regions(pcid, DEVICE_NAME);
1624         if (rc) {
1625                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1626                 device_free_info(priv);
1627                 return -ENODEV;
1628         }
1629
1630         if (dma_set_mask(&pcid->dev, DMA_BIT_MASK(32))) {
1631                 dev_err(&pcid->dev, ": Failed to set dma 32 bit mask\n");
1632                 device_free_info(priv);
1633                 return -ENODEV;
1634         }
1635
1636         INIT_WORK(&priv->interrupt_work, vnt_interrupt_work);
1637
1638         /* do reset */
1639         if (!MACbSoftwareReset(priv->PortOffset)) {
1640                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1641                 device_free_info(priv);
1642                 return -ENODEV;
1643         }
1644         /* initial to reload eeprom */
1645         MACvInitialize(priv->PortOffset);
1646         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1647
1648         /* Get RFType */
1649         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1650         priv->byRFType &= RF_MASK;
1651
1652         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1653
1654         device_get_options(priv);
1655         device_set_options(priv);
1656
1657         wiphy = priv->hw->wiphy;
1658
1659         wiphy->frag_threshold = FRAG_THRESH_DEF;
1660         wiphy->rts_threshold = RTS_THRESH_DEF;
1661         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1662                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1663
1664         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1665         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1666         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1667         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1668         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1669
1670         priv->hw->max_signal = 100;
1671
1672         if (vnt_init(priv))
1673                 return -ENODEV;
1674
1675         device_print_info(priv);
1676         pci_set_drvdata(pcid, priv);
1677
1678         return 0;
1679 }
1680
1681 /*------------------------------------------------------------------*/
1682
1683 #ifdef CONFIG_PM
1684 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1685 {
1686         struct vnt_private *priv = pci_get_drvdata(pcid);
1687         unsigned long flags;
1688
1689         spin_lock_irqsave(&priv->lock, flags);
1690
1691         pci_save_state(pcid);
1692
1693         MACbShutdown(priv->PortOffset);
1694
1695         pci_disable_device(pcid);
1696         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1697
1698         spin_unlock_irqrestore(&priv->lock, flags);
1699
1700         return 0;
1701 }
1702
1703 static int vt6655_resume(struct pci_dev *pcid)
1704 {
1705
1706         pci_set_power_state(pcid, PCI_D0);
1707         pci_enable_wake(pcid, PCI_D0, 0);
1708         pci_restore_state(pcid);
1709
1710         return 0;
1711 }
1712 #endif
1713
1714 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1715
1716 static struct pci_driver device_driver = {
1717         .name = DEVICE_NAME,
1718         .id_table = vt6655_pci_id_table,
1719         .probe = vt6655_probe,
1720         .remove = vt6655_remove,
1721 #ifdef CONFIG_PM
1722         .suspend = vt6655_suspend,
1723         .resume = vt6655_resume,
1724 #endif
1725 };
1726
1727 module_pci_driver(device_driver);