drivers/staging/vt6655/device_main.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   4  * All rights reserved.
   5  *
   6  * File: device_main.c
   7  *
   8  * Purpose: driver entry for initial, open, close, tx and rx.
   9  *
  10  * Author: Lyndon Chen
  11  *
  12  * Date: Jan 8, 2003
  13  *
  14  * Functions:
  15  *
  16  *   vt6655_probe - module initial (insmod) driver entry
  17  *   vt6655_remove - module remove entry
  18  *   device_free_info - device structure resource free function
  19  *   device_print_info - print out resource
  20  *   device_rx_srv - rx service function
  21  *   device_alloc_rx_buf - rx buffer pre-allocated function
  22  *   device_free_rx_buf - free rx buffer function
  23  *   device_free_tx_buf - free tx buffer function
  24  *   device_init_rd0_ring - initial rd dma0 ring
  25  *   device_init_rd1_ring - initial rd dma1 ring
  26  *   device_init_td0_ring - initial tx dma0 ring buffer
  27  *   device_init_td1_ring - initial tx dma1 ring buffer
  28  *   device_init_registers - initial MAC & BBP & RF internal registers.
  29  *   device_init_rings - initial tx/rx ring buffer
  30  *   device_free_rings - free all allocated ring buffer
  31  *   device_tx_srv - tx interrupt service function
  32  *
  33  * Revision History:
  34  */
  35
  36 #include <linux/file.h>
  37 #include "device.h"
  38 #include "card.h"
  39 #include "channel.h"
  40 #include "baseband.h"
  41 #include "mac.h"
  42 #include "power.h"
  43 #include "rxtx.h"
  44 #include "dpc.h"
  45 #include "rf.h"
  46 #include <linux/delay.h>
  47 #include <linux/kthread.h>
  48 #include <linux/slab.h>
  49
  50 /*---------------------  Static Definitions -------------------------*/
  51 /*
  52  * Define module options
  53  */
  54 MODULE_AUTHOR("VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>");
  55 MODULE_LICENSE("GPL");
  56 MODULE_DESCRIPTION("VIA Networking Solomon-A/B/G Wireless LAN Adapter Driver");
  57
  58 #define DEVICE_PARAM(N, D)
  59
  60 #define RX_DESC_MIN0     16
  61 #define RX_DESC_MAX0     128
  62 #define RX_DESC_DEF0     32
  63 DEVICE_PARAM(RxDescriptors0, "Number of receive descriptors0");
  64
  65 #define RX_DESC_MIN1     16
  66 #define RX_DESC_MAX1     128
  67 #define RX_DESC_DEF1     32
  68 DEVICE_PARAM(RxDescriptors1, "Number of receive descriptors1");
  69
  70 #define TX_DESC_MIN0     16
  71 #define TX_DESC_MAX0     128
  72 #define TX_DESC_DEF0     32
  73 DEVICE_PARAM(TxDescriptors0, "Number of transmit descriptors0");
  74
  75 #define TX_DESC_MIN1     16
  76 #define TX_DESC_MAX1     128
  77 #define TX_DESC_DEF1     64
  78 DEVICE_PARAM(TxDescriptors1, "Number of transmit descriptors1");
  79
  80 #define INT_WORKS_DEF   20
  81 #define INT_WORKS_MIN   10
  82 #define INT_WORKS_MAX   64
  83
  84 DEVICE_PARAM(int_works, "Number of packets per interrupt services");
  85
  86 #define RTS_THRESH_DEF     2347
  87
  88 #define FRAG_THRESH_DEF     2346
  89
  90 #define SHORT_RETRY_MIN     0
  91 #define SHORT_RETRY_MAX     31
  92 #define SHORT_RETRY_DEF     8
  93
  94 DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");
  95
  96 #define LONG_RETRY_MIN     0
  97 #define LONG_RETRY_MAX     15
  98 #define LONG_RETRY_DEF     4
  99
 100 DEVICE_PARAM(LongRetryLimit, "long frame retry limits");
 101
 102 /* BasebandType[] baseband type selected
 103  * 0: indicate 802.11a type
 104  * 1: indicate 802.11b type
 105  * 2: indicate 802.11g type
 106  */
 107 #define BBP_TYPE_MIN     0
 108 #define BBP_TYPE_MAX     2
 109 #define BBP_TYPE_DEF     2
 110
 111 DEVICE_PARAM(BasebandType, "baseband type");
 112
 113 /*
 114  * Static vars definitions
 115  */
 116 static const struct pci_device_id vt6655_pci_id_table[] = {
 117         { PCI_VDEVICE(VIA, 0x3253) },
 118         { 0, }
 119 };
 120
 121 /*---------------------  Static Functions  --------------------------*/
 122
 123 static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
 124 static void device_free_info(struct vnt_private *priv);
 125 static void device_print_info(struct vnt_private *priv);
 126
 127 static int device_init_rd0_ring(struct vnt_private *priv);
 128 static int device_init_rd1_ring(struct vnt_private *priv);
 129 static int device_init_td0_ring(struct vnt_private *priv);
 130 static int device_init_td1_ring(struct vnt_private *priv);
 131
 132 static int  device_rx_srv(struct vnt_private *priv, unsigned int idx);
 133 static int  device_tx_srv(struct vnt_private *priv, unsigned int idx);
 134 static bool device_alloc_rx_buf(struct vnt_private *, struct vnt_rx_desc *);
 135 static void device_free_rx_buf(struct vnt_private *priv,
 136                                struct vnt_rx_desc *rd);
 137 static void device_init_registers(struct vnt_private *priv);
 138 static void device_free_tx_buf(struct vnt_private *, struct vnt_tx_desc *);
 139 static void device_free_td0_ring(struct vnt_private *priv);
 140 static void device_free_td1_ring(struct vnt_private *priv);
 141 static void device_free_rd0_ring(struct vnt_private *priv);
 142 static void device_free_rd1_ring(struct vnt_private *priv);
 143 static void device_free_rings(struct vnt_private *priv);
 144
 145 /*---------------------  Export Variables  --------------------------*/
 146
 147 /*---------------------  Export Functions  --------------------------*/
 148
 149 static void vt6655_remove(struct pci_dev *pcid)
 150 {
 151         struct vnt_private *priv = pci_get_drvdata(pcid);
 152
 153         if (!priv)
 154                 return;
 155         device_free_info(priv);
 156 }
 157
 158 static void device_get_options(struct vnt_private *priv)
 159 {
 160         struct vnt_options *opts = &priv->opts;
 161
 162         opts->rx_descs0 = RX_DESC_DEF0;
 163         opts->rx_descs1 = RX_DESC_DEF1;
 164         opts->tx_descs[0] = TX_DESC_DEF0;
 165         opts->tx_descs[1] = TX_DESC_DEF1;
 166         opts->int_works = INT_WORKS_DEF;
 167
 168         opts->short_retry = SHORT_RETRY_DEF;
 169         opts->long_retry = LONG_RETRY_DEF;
 170         opts->bbp_type = BBP_TYPE_DEF;
 171 }
 172
 173 static void
 174 device_set_options(struct vnt_private *priv)
 175 {
 176         priv->byShortRetryLimit = priv->opts.short_retry;
 177         priv->byLongRetryLimit = priv->opts.long_retry;
 178         priv->byBBType = priv->opts.bbp_type;
 179         priv->byPacketType = priv->byBBType;
 180         priv->byAutoFBCtrl = AUTO_FB_0;
 181         priv->bUpdateBBVGA = true;
 182         priv->byPreambleType = 0;
 183
 184         pr_debug(" byShortRetryLimit= %d\n", (int)priv->byShortRetryLimit);
 185         pr_debug(" byLongRetryLimit= %d\n", (int)priv->byLongRetryLimit);
 186         pr_debug(" byPreambleType= %d\n", (int)priv->byPreambleType);
 187         pr_debug(" byShortPreamble= %d\n", (int)priv->byShortPreamble);
 188         pr_debug(" byBBType= %d\n", (int)priv->byBBType);
 189 }
 190
 191 /*
 192  * Initialisation of MAC & BBP registers
 193  */
 194
 195 static void device_init_registers(struct vnt_private *priv)
 196 {
 197         unsigned long flags;
 198         unsigned int ii;
 199         unsigned char byValue;
 200         unsigned char byCCKPwrdBm = 0;
 201         unsigned char byOFDMPwrdBm = 0;
 202
 203         MACbShutdown(priv);
 204         bb_software_reset(priv);
 205
 206         /* Do MACbSoftwareReset in MACvInitialize */
 207         MACbSoftwareReset(priv);
 208
 209         priv->bAES = false;
 210
 211         /* Only used in 11g type, sync with ERP IE */
 212         priv->bProtectMode = false;
 213
 214         priv->bNonERPPresent = false;
 215         priv->bBarkerPreambleMd = false;
 216         priv->wCurrentRate = RATE_1M;
 217         priv->byTopOFDMBasicRate = RATE_24M;
 218         priv->byTopCCKBasicRate = RATE_1M;
 219
 220         /* init MAC */
 221         MACvInitialize(priv);
 222
 223         /* Get Local ID */
 224         VNSvInPortB(priv->PortOffset + MAC_REG_LOCALID, &priv->byLocalID);
 225
 226         spin_lock_irqsave(&priv->lock, flags);
 227
 228         SROMvReadAllContents(priv->PortOffset, priv->abyEEPROM);
 229
 230         spin_unlock_irqrestore(&priv->lock, flags);
 231
 232         /* Get Channel range */
 233         priv->byMinChannel = 1;
 234         priv->byMaxChannel = CB_MAX_CHANNEL;
 235
 236         /* Get Antena */
 237         byValue = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_ANTENNA);
 238         if (byValue & EEP_ANTINV)
 239                 priv->bTxRxAntInv = true;
 240         else
 241                 priv->bTxRxAntInv = false;
 242
 243         byValue &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 244         /* if not set default is All */
 245         if (byValue == 0)
 246                 byValue = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 247
 248         if (byValue == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 249                 priv->byAntennaCount = 2;
 250                 priv->byTxAntennaMode = ANT_B;
 251                 priv->dwTxAntennaSel = 1;
 252                 priv->dwRxAntennaSel = 1;
 253
 254                 if (priv->bTxRxAntInv)
 255                         priv->byRxAntennaMode = ANT_A;
 256                 else
 257                         priv->byRxAntennaMode = ANT_B;
 258         } else  {
 259                 priv->byAntennaCount = 1;
 260                 priv->dwTxAntennaSel = 0;
 261                 priv->dwRxAntennaSel = 0;
 262
 263                 if (byValue & EEP_ANTENNA_AUX) {
 264                         priv->byTxAntennaMode = ANT_A;
 265
 266                         if (priv->bTxRxAntInv)
 267                                 priv->byRxAntennaMode = ANT_B;
 268                         else
 269                                 priv->byRxAntennaMode = ANT_A;
 270                 } else {
 271                         priv->byTxAntennaMode = ANT_B;
 272
 273                         if (priv->bTxRxAntInv)
 274                                 priv->byRxAntennaMode = ANT_A;
 275                         else
 276                                 priv->byRxAntennaMode = ANT_B;
 277                 }
 278         }
 279
 280         /* Set initial antenna mode */
 281         bb_set_tx_antenna_mode(priv, priv->byTxAntennaMode);
 282         bb_set_rx_antenna_mode(priv, priv->byRxAntennaMode);
 283
 284         /* zonetype initial */
 285         priv->byOriginalZonetype = priv->abyEEPROM[EEP_OFS_ZONETYPE];
 286
 287         if (!priv->bZoneRegExist)
 288                 priv->byZoneType = priv->abyEEPROM[EEP_OFS_ZONETYPE];
 289
 290         pr_debug("priv->byZoneType = %x\n", priv->byZoneType);
 291
 292         /* Init RF module */
 293         RFbInit(priv);
 294
 295         /* Get Desire Power Value */
 296         priv->byCurPwr = 0xFF;
 297         priv->byCCKPwr = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_PWR_CCK);
 298         priv->byOFDMPwrG = SROMbyReadEmbedded(priv->PortOffset,
 299                                               EEP_OFS_PWR_OFDMG);
 300
 301         /* Load power Table */
 302         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 303                 priv->abyCCKPwrTbl[ii + 1] =
 304                         SROMbyReadEmbedded(priv->PortOffset,
 305                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 306                 if (priv->abyCCKPwrTbl[ii + 1] == 0)
 307                         priv->abyCCKPwrTbl[ii + 1] = priv->byCCKPwr;
 308
 309                 priv->abyOFDMPwrTbl[ii + 1] =
 310                         SROMbyReadEmbedded(priv->PortOffset,
 311                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 312                 if (priv->abyOFDMPwrTbl[ii + 1] == 0)
 313                         priv->abyOFDMPwrTbl[ii + 1] = priv->byOFDMPwrG;
 314
 315                 priv->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 316                 priv->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 317         }
 318
 319         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 320         for (ii = 11; ii < 14; ii++) {
 321                 priv->abyCCKPwrTbl[ii] = priv->abyCCKPwrTbl[10];
 322                 priv->abyOFDMPwrTbl[ii] = priv->abyOFDMPwrTbl[10];
 323         }
 324
 325         /* Load OFDM A Power Table */
 326         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 327                 priv->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 328                         SROMbyReadEmbedded(priv->PortOffset,
 329                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 330
 331                 priv->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 332                         SROMbyReadEmbedded(priv->PortOffset,
 333                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 334         }
 335
 336         if (priv->byLocalID > REV_ID_VT3253_B1) {
 337                 MACvSelectPage1(priv->PortOffset);
 338
 339                 VNSvOutPortB(priv->PortOffset + MAC_REG_MSRCTL + 1,
 340                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 341
 342                 MACvSelectPage0(priv->PortOffset);
 343         }
 344
 345         /* use relative tx timeout and 802.11i D4 */
 346         MACvWordRegBitsOn(priv->PortOffset,
 347                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 348
 349         /* set performance parameter by registry */
 350         MACvSetShortRetryLimit(priv, priv->byShortRetryLimit);
 351         MACvSetLongRetryLimit(priv, priv->byLongRetryLimit);
 352
 353         /* reset TSF counter */
 354         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 355         /* enable TSF counter */
 356         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 357
 358         /* initialize BBP registers */
 359         bb_vt3253_init(priv);
 360
 361         if (priv->bUpdateBBVGA) {
 362                 priv->byBBVGACurrent = priv->abyBBVGA[0];
 363                 priv->byBBVGANew = priv->byBBVGACurrent;
 364                 bb_set_vga_gain_offset(priv, priv->abyBBVGA[0]);
 365         }
 366
 367         bb_set_rx_antenna_mode(priv, priv->byRxAntennaMode);
 368         bb_set_tx_antenna_mode(priv, priv->byTxAntennaMode);
 369
 370         /* Set BB and packet type at the same time. */
 371         /* Set Short Slot Time, xIFS, and RSPINF. */
 372         priv->wCurrentRate = RATE_54M;
 373
 374         priv->bRadioOff = false;
 375
 376         priv->byRadioCtl = SROMbyReadEmbedded(priv->PortOffset,
 377                                               EEP_OFS_RADIOCTL);
 378         priv->bHWRadioOff = false;
 379
 380         if (priv->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 381                 /* Get GPIO */
 382                 MACvGPIOIn(priv->PortOffset, &priv->byGPIO);
 383
 384                 if (((priv->byGPIO & GPIO0_DATA) &&
 385                      !(priv->byRadioCtl & EEP_RADIOCTL_INV)) ||
 386                      (!(priv->byGPIO & GPIO0_DATA) &&
 387                      (priv->byRadioCtl & EEP_RADIOCTL_INV)))
 388                         priv->bHWRadioOff = true;
 389         }
 390
 391         if (priv->bHWRadioOff || priv->bRadioControlOff)
 392                 CARDbRadioPowerOff(priv);
 393
 394         /* get Permanent network address */
 395         SROMvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
 396         pr_debug("Network address = %pM\n", priv->abyCurrentNetAddr);
 397
 398         /* reset Tx pointer */
 399         CARDvSafeResetRx(priv);
 400         /* reset Rx pointer */
 401         CARDvSafeResetTx(priv);
 402
 403         if (priv->byLocalID <= REV_ID_VT3253_A1)
 404                 MACvRegBitsOn(priv->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 405
 406         /* Turn On Rx DMA */
 407         MACvReceive0(priv->PortOffset);
 408         MACvReceive1(priv->PortOffset);
 409
 410         /* start the adapter */
 411         MACvStart(priv->PortOffset);
 412 }
 413
 414 static void device_print_info(struct vnt_private *priv)
 415 {
 416         dev_info(&priv->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 417                  priv->abyCurrentNetAddr, (unsigned long)priv->ioaddr,
 418                  (unsigned long)priv->PortOffset, priv->pcid->irq);
 419 }
 420
 421 static void device_free_info(struct vnt_private *priv)
 422 {
 423         if (!priv)
 424                 return;
 425
 426         if (priv->mac_hw)
 427                 ieee80211_unregister_hw(priv->hw);
 428
 429         if (priv->PortOffset)
 430                 iounmap(priv->PortOffset);
 431
 432         if (priv->pcid)
 433                 pci_release_regions(priv->pcid);
 434
 435         if (priv->hw)
 436                 ieee80211_free_hw(priv->hw);
 437 }
 438
 439 static bool device_init_rings(struct vnt_private *priv)
 440 {
 441         void *vir_pool;
 442
 443         /*allocate all RD/TD rings a single pool*/
 444         vir_pool = dma_alloc_coherent(&priv->pcid->dev,
 445                                       priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 446                                       priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 447                                       priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 448                                       priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 449                                       &priv->pool_dma, GFP_ATOMIC);
 450         if (!vir_pool) {
 451                 dev_err(&priv->pcid->dev, "allocate desc dma memory failed\n");
 452                 return false;
 453         }
 454
 455         priv->aRD0Ring = vir_pool;
 456         priv->aRD1Ring = vir_pool +
 457                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 458
 459         priv->rd0_pool_dma = priv->pool_dma;
 460         priv->rd1_pool_dma = priv->rd0_pool_dma +
 461                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 462
 463         priv->tx0_bufs = dma_alloc_coherent(&priv->pcid->dev,
 464                                             priv->opts.tx_descs[0] * PKT_BUF_SZ +
 465                                             priv->opts.tx_descs[1] * PKT_BUF_SZ +
 466                                             CB_BEACON_BUF_SIZE +
 467                                             CB_MAX_BUF_SIZE,
 468                                             &priv->tx_bufs_dma0, GFP_ATOMIC);
 469         if (!priv->tx0_bufs) {
 470                 dev_err(&priv->pcid->dev, "allocate buf dma memory failed\n");
 471
 472                 dma_free_coherent(&priv->pcid->dev,
 473                                   priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 474                                   priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 475                                   priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 476                                   priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 477                                   vir_pool, priv->pool_dma);
 478                 return false;
 479         }
 480
 481         priv->td0_pool_dma = priv->rd1_pool_dma +
 482                 priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);
 483
 484         priv->td1_pool_dma = priv->td0_pool_dma +
 485                 priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);
 486
 487         /* vir_pool: pvoid type */
 488         priv->apTD0Rings = vir_pool
 489                 + priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
 490                 + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);
 491
 492         priv->apTD1Rings = vir_pool
 493                 + priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
 494                 + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc)
 495                 + priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);
 496
 497         priv->tx1_bufs = priv->tx0_bufs +
 498                 priv->opts.tx_descs[0] * PKT_BUF_SZ;
 499
 500         priv->tx_beacon_bufs = priv->tx1_bufs +
 501                 priv->opts.tx_descs[1] * PKT_BUF_SZ;
 502
 503         priv->pbyTmpBuff = priv->tx_beacon_bufs +
 504                 CB_BEACON_BUF_SIZE;
 505
 506         priv->tx_bufs_dma1 = priv->tx_bufs_dma0 +
 507                 priv->opts.tx_descs[0] * PKT_BUF_SZ;
 508
 509         priv->tx_beacon_dma = priv->tx_bufs_dma1 +
 510                 priv->opts.tx_descs[1] * PKT_BUF_SZ;
 511
 512         return true;
 513 }
 514
 515 static void device_free_rings(struct vnt_private *priv)
 516 {
 517         dma_free_coherent(&priv->pcid->dev,
 518                           priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 519                           priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 520                           priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 521                           priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 522                           priv->aRD0Ring, priv->pool_dma);
 523
 524         if (priv->tx0_bufs)
 525                 dma_free_coherent(&priv->pcid->dev,
 526                                   priv->opts.tx_descs[0] * PKT_BUF_SZ +
 527                                   priv->opts.tx_descs[1] * PKT_BUF_SZ +
 528                                   CB_BEACON_BUF_SIZE +
 529                                   CB_MAX_BUF_SIZE,
 530                                   priv->tx0_bufs, priv->tx_bufs_dma0);
 531 }
 532
 533 static int device_init_rd0_ring(struct vnt_private *priv)
 534 {
 535         int i;
 536         dma_addr_t      curr = priv->rd0_pool_dma;
 537         struct vnt_rx_desc *desc;
 538         int ret;
 539
 540         /* Init the RD0 ring entries */
 541         for (i = 0; i < priv->opts.rx_descs0;
 542              i ++, curr += sizeof(struct vnt_rx_desc)) {
 543                 desc = &priv->aRD0Ring[i];
 544                 desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_KERNEL);
 545                 if (!desc->rd_info) {
 546                         ret = -ENOMEM;
 547                         goto err_free_desc;
 548                 }
 549
 550                 if (!device_alloc_rx_buf(priv, desc)) {
 551                         dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");
 552                         ret = -ENOMEM;
 553                         goto err_free_rd;
 554                 }
 555
 556                 desc->next = &priv->aRD0Ring[(i + 1) % priv->opts.rx_descs0];
 557                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 558         }
 559
 560         if (i > 0)
 561                 priv->aRD0Ring[i - 1].next_desc = cpu_to_le32(priv->rd0_pool_dma);
 562         priv->pCurrRD[0] = &priv->aRD0Ring[0];
 563
 564         return 0;
 565
 566 err_free_rd:
 567         kfree(desc->rd_info);
 568
 569 err_free_desc:
 570         while (--i) {
 571                 desc = &priv->aRD0Ring[i];
 572                 device_free_rx_buf(priv, desc);
 573                 kfree(desc->rd_info);
 574         }
 575
 576         return ret;
 577 }
 578
 579 static int device_init_rd1_ring(struct vnt_private *priv)
 580 {
 581         int i;
 582         dma_addr_t      curr = priv->rd1_pool_dma;
 583         struct vnt_rx_desc *desc;
 584         int ret;
 585
 586         /* Init the RD1 ring entries */
 587         for (i = 0; i < priv->opts.rx_descs1;
 588              i ++, curr += sizeof(struct vnt_rx_desc)) {
 589                 desc = &priv->aRD1Ring[i];
 590                 desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_KERNEL);
 591                 if (!desc->rd_info) {
 592                         ret = -ENOMEM;
 593                         goto err_free_desc;
 594                 }
 595
 596                 if (!device_alloc_rx_buf(priv, desc)) {
 597                         dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");
 598                         ret = -ENOMEM;
 599                         goto err_free_rd;
 600                 }
 601
 602                 desc->next = &priv->aRD1Ring[(i + 1) % priv->opts.rx_descs1];
 603                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 604         }
 605
 606         if (i > 0)
 607                 priv->aRD1Ring[i - 1].next_desc = cpu_to_le32(priv->rd1_pool_dma);
 608         priv->pCurrRD[1] = &priv->aRD1Ring[0];
 609
 610         return 0;
 611
 612 err_free_rd:
 613         kfree(desc->rd_info);
 614
 615 err_free_desc:
 616         while (--i) {
 617                 desc = &priv->aRD1Ring[i];
 618                 device_free_rx_buf(priv, desc);
 619                 kfree(desc->rd_info);
 620         }
 621
 622         return ret;
 623 }
 624
 625 static void device_free_rd0_ring(struct vnt_private *priv)
 626 {
 627         int i;
 628
 629         for (i = 0; i < priv->opts.rx_descs0; i++) {
 630                 struct vnt_rx_desc *desc = &priv->aRD0Ring[i];
 631
 632                 device_free_rx_buf(priv, desc);
 633                 kfree(desc->rd_info);
 634         }
 635 }
 636
 637 static void device_free_rd1_ring(struct vnt_private *priv)
 638 {
 639         int i;
 640
 641         for (i = 0; i < priv->opts.rx_descs1; i++) {
 642                 struct vnt_rx_desc *desc = &priv->aRD1Ring[i];
 643
 644                 device_free_rx_buf(priv, desc);
 645                 kfree(desc->rd_info);
 646         }
 647 }
 648
 649 static int device_init_td0_ring(struct vnt_private *priv)
 650 {
 651         int i;
 652         dma_addr_t  curr;
 653         struct vnt_tx_desc *desc;
 654         int ret;
 655
 656         curr = priv->td0_pool_dma;
 657         for (i = 0; i < priv->opts.tx_descs[0];
 658              i++, curr += sizeof(struct vnt_tx_desc)) {
 659                 desc = &priv->apTD0Rings[i];
 660                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_KERNEL);
 661                 if (!desc->td_info) {
 662                         ret = -ENOMEM;
 663                         goto err_free_desc;
 664                 }
 665
 666                 desc->td_info->buf = priv->tx0_bufs + i * PKT_BUF_SZ;
 667                 desc->td_info->buf_dma = priv->tx_bufs_dma0 + i * PKT_BUF_SZ;
 668
 669                 desc->next = &(priv->apTD0Rings[(i + 1) % priv->opts.tx_descs[0]]);
 670                 desc->next_desc = cpu_to_le32(curr +
 671                                               sizeof(struct vnt_tx_desc));
 672         }
 673
 674         if (i > 0)
 675                 priv->apTD0Rings[i - 1].next_desc = cpu_to_le32(priv->td0_pool_dma);
 676         priv->apTailTD[0] = priv->apCurrTD[0] = &priv->apTD0Rings[0];
 677
 678         return 0;
 679
 680 err_free_desc:
 681         while (--i) {
 682                 desc = &priv->apTD0Rings[i];
 683                 kfree(desc->td_info);
 684         }
 685
 686         return ret;
 687 }
 688
 689 static int device_init_td1_ring(struct vnt_private *priv)
 690 {
 691         int i;
 692         dma_addr_t  curr;
 693         struct vnt_tx_desc *desc;
 694         int ret;
 695
 696         /* Init the TD ring entries */
 697         curr = priv->td1_pool_dma;
 698         for (i = 0; i < priv->opts.tx_descs[1];
 699              i++, curr += sizeof(struct vnt_tx_desc)) {
 700                 desc = &priv->apTD1Rings[i];
 701                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_KERNEL);
 702                 if (!desc->td_info) {
 703                         ret = -ENOMEM;
 704                         goto err_free_desc;
 705                 }
 706
 707                 desc->td_info->buf = priv->tx1_bufs + i * PKT_BUF_SZ;
 708                 desc->td_info->buf_dma = priv->tx_bufs_dma1 + i * PKT_BUF_SZ;
 709
 710                 desc->next = &(priv->apTD1Rings[(i + 1) % priv->opts.tx_descs[1]]);
 711                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 712         }
 713
 714         if (i > 0)
 715                 priv->apTD1Rings[i - 1].next_desc = cpu_to_le32(priv->td1_pool_dma);
 716         priv->apTailTD[1] = priv->apCurrTD[1] = &priv->apTD1Rings[0];
 717
 718         return 0;
 719
 720 err_free_desc:
 721         while (--i) {
 722                 desc = &priv->apTD1Rings[i];
 723                 kfree(desc->td_info);
 724         }
 725
 726         return ret;
 727 }
 728
 729 static void device_free_td0_ring(struct vnt_private *priv)
 730 {
 731         int i;
 732
 733         for (i = 0; i < priv->opts.tx_descs[0]; i++) {
 734                 struct vnt_tx_desc *desc = &priv->apTD0Rings[i];
 735                 struct vnt_td_info *td_info = desc->td_info;
 736
 737                 dev_kfree_skb(td_info->skb);
 738                 kfree(desc->td_info);
 739         }
 740 }
 741
 742 static void device_free_td1_ring(struct vnt_private *priv)
 743 {
 744         int i;
 745
 746         for (i = 0; i < priv->opts.tx_descs[1]; i++) {
 747                 struct vnt_tx_desc *desc = &priv->apTD1Rings[i];
 748                 struct vnt_td_info *td_info = desc->td_info;
 749
 750                 dev_kfree_skb(td_info->skb);
 751                 kfree(desc->td_info);
 752         }
 753 }
 754
 755 /*-----------------------------------------------------------------*/
 756
 757 static int device_rx_srv(struct vnt_private *priv, unsigned int idx)
 758 {
 759         struct vnt_rx_desc *rd;
 760         int works = 0;
 761
 762         for (rd = priv->pCurrRD[idx];
 763              rd->rd0.owner == OWNED_BY_HOST;
 764              rd = rd->next) {
 765                 if (works++ > 15)
 766                         break;
 767
 768                 if (!rd->rd_info->skb)
 769                         break;
 770
 771                 if (vnt_receive_frame(priv, rd)) {
 772                         if (!device_alloc_rx_buf(priv, rd)) {
 773                                 dev_err(&priv->pcid->dev,
 774                                         "can not allocate rx buf\n");
 775                                 break;
 776                         }
 777                 }
 778                 rd->rd0.owner = OWNED_BY_NIC;
 779         }
 780
 781         priv->pCurrRD[idx] = rd;
 782
 783         return works;
 784 }
 785
 786 static bool device_alloc_rx_buf(struct vnt_private *priv,
 787                                 struct vnt_rx_desc *rd)
 788 {
 789         struct vnt_rd_info *rd_info = rd->rd_info;
 790
 791         rd_info->skb = dev_alloc_skb((int)priv->rx_buf_sz);
 792         if (!rd_info->skb)
 793                 return false;
 794
 795         rd_info->skb_dma =
 796                 dma_map_single(&priv->pcid->dev,
 797                                skb_put(rd_info->skb, skb_tailroom(rd_info->skb)),
 798                                priv->rx_buf_sz, DMA_FROM_DEVICE);
 799         if (dma_mapping_error(&priv->pcid->dev, rd_info->skb_dma)) {
 800                 dev_kfree_skb(rd_info->skb);
 801                 rd_info->skb = NULL;
 802                 return false;
 803         }
 804
 805         *((unsigned int *)&rd->rd0) = 0; /* FIX cast */
 806
 807         rd->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
 808         rd->rd0.owner = OWNED_BY_NIC;
 809         rd->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
 810         rd->buff_addr = cpu_to_le32(rd_info->skb_dma);
 811
 812         return true;
 813 }
 814
 815 static void device_free_rx_buf(struct vnt_private *priv,
 816                                struct vnt_rx_desc *rd)
 817 {
 818         struct vnt_rd_info *rd_info = rd->rd_info;
 819
 820         dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
 821                          priv->rx_buf_sz, DMA_FROM_DEVICE);
 822         dev_kfree_skb(rd_info->skb);
 823 }
 824
 825 static const u8 fallback_rate0[5][5] = {
 826         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 827         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 828         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 829         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 830         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 831 };
 832
 833 static const u8 fallback_rate1[5][5] = {
 834         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 835         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 836         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 837         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 838         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 839 };
 840
 841 static int vnt_int_report_rate(struct vnt_private *priv,
 842                                struct vnt_td_info *context, u8 tsr0, u8 tsr1)
 843 {
 844         struct vnt_tx_fifo_head *fifo_head;
 845         struct ieee80211_tx_info *info;
 846         struct ieee80211_rate *rate;
 847         u16 fb_option;
 848         u8 tx_retry = (tsr0 & TSR0_NCR);
 849         s8 idx;
 850
 851         if (!context)
 852                 return -ENOMEM;
 853
 854         if (!context->skb)
 855                 return -EINVAL;
 856
 857         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 858         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 859                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 860
 861         info = IEEE80211_SKB_CB(context->skb);
 862         idx = info->control.rates[0].idx;
 863
 864         if (fb_option && !(tsr1 & TSR1_TERR)) {
 865                 u8 tx_rate;
 866                 u8 retry = tx_retry;
 867
 868                 rate = ieee80211_get_tx_rate(priv->hw, info);
 869                 tx_rate = rate->hw_value - RATE_18M;
 870
 871                 if (retry > 4)
 872                         retry = 4;
 873
 874                 if (fb_option & FIFOCTL_AUTO_FB_0)
 875                         tx_rate = fallback_rate0[tx_rate][retry];
 876                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 877                         tx_rate = fallback_rate1[tx_rate][retry];
 878
 879                 if (info->band == NL80211_BAND_5GHZ)
 880                         idx = tx_rate - RATE_6M;
 881                 else
 882                         idx = tx_rate;
 883         }
 884
 885         ieee80211_tx_info_clear_status(info);
 886
 887         info->status.rates[0].count = tx_retry;
 888
 889         if (!(tsr1 & TSR1_TERR)) {
 890                 info->status.rates[0].idx = idx;
 891
 892                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 893                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 894                 else
 895                         info->flags |= IEEE80211_TX_STAT_ACK;
 896         }
 897
 898         return 0;
 899 }
 900
 901 static int device_tx_srv(struct vnt_private *priv, unsigned int idx)
 902 {
 903         struct vnt_tx_desc *desc;
 904         int                      works = 0;
 905         unsigned char byTsr0;
 906         unsigned char byTsr1;
 907
 908         for (desc = priv->apTailTD[idx]; priv->iTDUsed[idx] > 0; desc = desc->next) {
 909                 if (desc->td0.owner == OWNED_BY_NIC)
 910                         break;
 911                 if (works++ > 15)
 912                         break;
 913
 914                 byTsr0 = desc->td0.tsr0;
 915                 byTsr1 = desc->td0.tsr1;
 916
 917                 /* Only the status of first TD in the chain is correct */
 918                 if (desc->td1.tcr & TCR_STP) {
 919                         if ((desc->td_info->flags & TD_FLAGS_NETIF_SKB) != 0) {
 920                                 if (!(byTsr1 & TSR1_TERR)) {
 921                                         if (byTsr0 != 0) {
 922                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 923                                                          (int)idx, byTsr1,
 924                                                          byTsr0);
 925                                         }
 926                                 } else {
 927                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 928                                                  (int)idx, byTsr1, byTsr0);
 929                                 }
 930                         }
 931
 932                         if (byTsr1 & TSR1_TERR) {
 933                                 if ((desc->td_info->flags & TD_FLAGS_PRIV_SKB) != 0) {
 934                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 935                                                  (int)idx, byTsr1, byTsr0);
 936                                 }
 937                         }
 938
 939                         vnt_int_report_rate(priv, desc->td_info, byTsr0, byTsr1);
 940
 941                         device_free_tx_buf(priv, desc);
 942                         priv->iTDUsed[idx]--;
 943                 }
 944         }
 945
 946         priv->apTailTD[idx] = desc;
 947
 948         return works;
 949 }
 950
 951 static void device_error(struct vnt_private *priv, unsigned short status)
 952 {
 953         if (status & ISR_FETALERR) {
 954                 dev_err(&priv->pcid->dev, "Hardware fatal error\n");
 955
 956                 MACbShutdown(priv);
 957                 return;
 958         }
 959 }
 960
 961 static void device_free_tx_buf(struct vnt_private *priv,
 962                                struct vnt_tx_desc *desc)
 963 {
 964         struct vnt_td_info *td_info = desc->td_info;
 965         struct sk_buff *skb = td_info->skb;
 966
 967         if (skb)
 968                 ieee80211_tx_status_irqsafe(priv->hw, skb);
 969
 970         td_info->skb = NULL;
 971         td_info->flags = 0;
 972 }
 973
 974 static void vnt_check_bb_vga(struct vnt_private *priv)
 975 {
 976         long dbm;
 977         int i;
 978
 979         if (!priv->bUpdateBBVGA)
 980                 return;
 981
 982         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
 983                 return;
 984
 985         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
 986                 return;
 987
 988         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
 989
 990         for (i = 0; i < BB_VGA_LEVEL; i++) {
 991                 if (dbm < priv->ldBmThreshold[i]) {
 992                         priv->byBBVGANew = priv->abyBBVGA[i];
 993                         break;
 994                 }
 995         }
 996
 997         if (priv->byBBVGANew == priv->byBBVGACurrent) {
 998                 priv->uBBVGADiffCount = 1;
 999                 return;
1000         }
1001
1002         priv->uBBVGADiffCount++;
1003
1004         if (priv->uBBVGADiffCount == 1) {
1005                 /* first VGA diff gain */
1006                 bb_set_vga_gain_offset(priv, priv->byBBVGANew);
1007
1008                 dev_dbg(&priv->pcid->dev,
1009                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1010                         (int)dbm, priv->byBBVGANew,
1011                         priv->byBBVGACurrent,
1012                         (int)priv->uBBVGADiffCount);
1013         }
1014
1015         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1016                 dev_dbg(&priv->pcid->dev,
1017                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1018                         (int)dbm, priv->byBBVGANew,
1019                         priv->byBBVGACurrent,
1020                         (int)priv->uBBVGADiffCount);
1021
1022                 bb_set_vga_gain_offset(priv, priv->byBBVGANew);
1023         }
1024 }
1025
1026 static void vnt_interrupt_process(struct vnt_private *priv)
1027 {
1028         struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
1029         int             max_count = 0;
1030         u32 mib_counter;
1031         u32 isr;
1032         unsigned long flags;
1033
1034         MACvReadISR(priv->PortOffset, &isr);
1035
1036         if (isr == 0)
1037                 return;
1038
1039         if (isr == 0xffffffff) {
1040                 pr_debug("isr = 0xffff\n");
1041                 return;
1042         }
1043
1044         spin_lock_irqsave(&priv->lock, flags);
1045
1046         /* Read low level stats */
1047         MACvReadMIBCounter(priv->PortOffset, &mib_counter);
1048
1049         low_stats->dot11RTSSuccessCount += mib_counter & 0xff;
1050         low_stats->dot11RTSFailureCount += (mib_counter >> 8) & 0xff;
1051         low_stats->dot11ACKFailureCount += (mib_counter >> 16) & 0xff;
1052         low_stats->dot11FCSErrorCount += (mib_counter >> 24) & 0xff;
1053
1054         /*
1055          * TBD....
1056          * Must do this after doing rx/tx, cause ISR bit is slow
1057          * than RD/TD write back
1058          * update ISR counter
1059          */
1060         while (isr && priv->vif) {
1061                 MACvWriteISR(priv->PortOffset, isr);
1062
1063                 if (isr & ISR_FETALERR) {
1064                         pr_debug(" ISR_FETALERR\n");
1065                         VNSvOutPortB(priv->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1066                         VNSvOutPortW(priv->PortOffset +
1067                                      MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1068                         device_error(priv, isr);
1069                 }
1070
1071                 if (isr & ISR_TBTT) {
1072                         if (priv->op_mode != NL80211_IFTYPE_ADHOC)
1073                                 vnt_check_bb_vga(priv);
1074
1075                         priv->bBeaconSent = false;
1076                         if (priv->bEnablePSMode)
1077                                 PSbIsNextTBTTWakeUp((void *)priv);
1078
1079                         if ((priv->op_mode == NL80211_IFTYPE_AP ||
1080                             priv->op_mode == NL80211_IFTYPE_ADHOC) &&
1081                             priv->vif->bss_conf.enable_beacon)
1082                                 MACvOneShotTimer1MicroSec(priv,
1083                                                           (priv->vif->bss_conf.beacon_int -
1084                                                            MAKE_BEACON_RESERVED) << 10);
1085
1086                         /* TODO: adhoc PS mode */
1087                 }
1088
1089                 if (isr & ISR_BNTX) {
1090                         if (priv->op_mode == NL80211_IFTYPE_ADHOC) {
1091                                 priv->bIsBeaconBufReadySet = false;
1092                                 priv->cbBeaconBufReadySetCnt = 0;
1093                         }
1094
1095                         priv->bBeaconSent = true;
1096                 }
1097
1098                 if (isr & ISR_RXDMA0)
1099                         max_count += device_rx_srv(priv, TYPE_RXDMA0);
1100
1101                 if (isr & ISR_RXDMA1)
1102                         max_count += device_rx_srv(priv, TYPE_RXDMA1);
1103
1104                 if (isr & ISR_TXDMA0)
1105                         max_count += device_tx_srv(priv, TYPE_TXDMA0);
1106
1107                 if (isr & ISR_AC0DMA)
1108                         max_count += device_tx_srv(priv, TYPE_AC0DMA);
1109
1110                 if (isr & ISR_SOFTTIMER1) {
1111                         if (priv->vif->bss_conf.enable_beacon)
1112                                 vnt_beacon_make(priv, priv->vif);
1113                 }
1114
1115                 /* If both buffers available wake the queue */
1116                 if (AVAIL_TD(priv, TYPE_TXDMA0) &&
1117                     AVAIL_TD(priv, TYPE_AC0DMA) &&
1118                     ieee80211_queue_stopped(priv->hw, 0))
1119                         ieee80211_wake_queues(priv->hw);
1120
1121                 MACvReadISR(priv->PortOffset, &isr);
1122
1123                 MACvReceive0(priv->PortOffset);
1124                 MACvReceive1(priv->PortOffset);
1125
1126                 if (max_count > priv->opts.int_works)
1127                         break;
1128         }
1129
1130         spin_unlock_irqrestore(&priv->lock, flags);
1131 }
1132
1133 static void vnt_interrupt_work(struct work_struct *work)
1134 {
1135         struct vnt_private *priv =
1136                 container_of(work, struct vnt_private, interrupt_work);
1137
1138         if (priv->vif)
1139                 vnt_interrupt_process(priv);
1140
1141         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1142 }
1143
1144 static irqreturn_t vnt_interrupt(int irq,  void *arg)
1145 {
1146         struct vnt_private *priv = arg;
1147
1148         schedule_work(&priv->interrupt_work);
1149
1150         MACvIntDisable(priv->PortOffset);
1151
1152         return IRQ_HANDLED;
1153 }
1154
1155 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1156 {
1157         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1158         struct vnt_tx_desc *head_td;
1159         u32 dma_idx;
1160         unsigned long flags;
1161
1162         spin_lock_irqsave(&priv->lock, flags);
1163
1164         if (ieee80211_is_data(hdr->frame_control))
1165                 dma_idx = TYPE_AC0DMA;
1166         else
1167                 dma_idx = TYPE_TXDMA0;
1168
1169         if (AVAIL_TD(priv, dma_idx) < 1) {
1170                 spin_unlock_irqrestore(&priv->lock, flags);
1171                 ieee80211_stop_queues(priv->hw);
1172                 return -ENOMEM;
1173         }
1174
1175         head_td = priv->apCurrTD[dma_idx];
1176
1177         head_td->td1.tcr = 0;
1178
1179         head_td->td_info->skb = skb;
1180
1181         if (dma_idx == TYPE_AC0DMA)
1182                 head_td->td_info->flags = TD_FLAGS_NETIF_SKB;
1183
1184         priv->apCurrTD[dma_idx] = head_td->next;
1185
1186         spin_unlock_irqrestore(&priv->lock, flags);
1187
1188         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1189
1190         spin_lock_irqsave(&priv->lock, flags);
1191
1192         priv->bPWBitOn = false;
1193
1194         /* Set TSR1 & ReqCount in TxDescHead */
1195         head_td->td1.tcr |= (TCR_STP | TCR_EDP | EDMSDU);
1196         head_td->td1.req_count = cpu_to_le16(head_td->td_info->req_count);
1197
1198         head_td->buff_addr = cpu_to_le32(head_td->td_info->buf_dma);
1199
1200         /* Poll Transmit the adapter */
1201         wmb();
1202         head_td->td0.owner = OWNED_BY_NIC;
1203         wmb(); /* second memory barrier */
1204
1205         if (head_td->td_info->flags & TD_FLAGS_NETIF_SKB)
1206                 MACvTransmitAC0(priv->PortOffset);
1207         else
1208                 MACvTransmit0(priv->PortOffset);
1209
1210         priv->iTDUsed[dma_idx]++;
1211
1212         spin_unlock_irqrestore(&priv->lock, flags);
1213
1214         return 0;
1215 }
1216
1217 static void vnt_tx_80211(struct ieee80211_hw *hw,
1218                          struct ieee80211_tx_control *control,
1219                          struct sk_buff *skb)
1220 {
1221         struct vnt_private *priv = hw->priv;
1222
1223         if (vnt_tx_packet(priv, skb))
1224                 ieee80211_free_txskb(hw, skb);
1225 }
1226
1227 static int vnt_start(struct ieee80211_hw *hw)
1228 {
1229         struct vnt_private *priv = hw->priv;
1230         int ret;
1231
1232         priv->rx_buf_sz = PKT_BUF_SZ;
1233         if (!device_init_rings(priv))
1234                 return -ENOMEM;
1235
1236         ret = request_irq(priv->pcid->irq, vnt_interrupt,
1237                           IRQF_SHARED, "vt6655", priv);
1238         if (ret) {
1239                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1240                 goto err_free_rings;
1241         }
1242
1243         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1244         ret = device_init_rd0_ring(priv);
1245         if (ret)
1246                 goto err_free_irq;
1247         ret = device_init_rd1_ring(priv);
1248         if (ret)
1249                 goto err_free_rd0_ring;
1250         ret = device_init_td0_ring(priv);
1251         if (ret)
1252                 goto err_free_rd1_ring;
1253         ret = device_init_td1_ring(priv);
1254         if (ret)
1255                 goto err_free_td0_ring;
1256
1257         device_init_registers(priv);
1258
1259         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1260         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1261
1262         ieee80211_wake_queues(hw);
1263
1264         return 0;
1265
1266 err_free_td0_ring:
1267         device_free_td0_ring(priv);
1268 err_free_rd1_ring:
1269         device_free_rd1_ring(priv);
1270 err_free_rd0_ring:
1271         device_free_rd0_ring(priv);
1272 err_free_irq:
1273         free_irq(priv->pcid->irq, priv);
1274 err_free_rings:
1275         device_free_rings(priv);
1276         return ret;
1277 }
1278
1279 static void vnt_stop(struct ieee80211_hw *hw)
1280 {
1281         struct vnt_private *priv = hw->priv;
1282
1283         ieee80211_stop_queues(hw);
1284
1285         cancel_work_sync(&priv->interrupt_work);
1286
1287         MACbShutdown(priv);
1288         MACbSoftwareReset(priv);
1289         CARDbRadioPowerOff(priv);
1290
1291         device_free_td0_ring(priv);
1292         device_free_td1_ring(priv);
1293         device_free_rd0_ring(priv);
1294         device_free_rd1_ring(priv);
1295         device_free_rings(priv);
1296
1297         free_irq(priv->pcid->irq, priv);
1298 }
1299
1300 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1301 {
1302         struct vnt_private *priv = hw->priv;
1303
1304         priv->vif = vif;
1305
1306         switch (vif->type) {
1307         case NL80211_IFTYPE_STATION:
1308                 break;
1309         case NL80211_IFTYPE_ADHOC:
1310                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1311
1312                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1313
1314                 break;
1315         case NL80211_IFTYPE_AP:
1316                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1317
1318                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1319
1320                 break;
1321         default:
1322                 return -EOPNOTSUPP;
1323         }
1324
1325         priv->op_mode = vif->type;
1326
1327         return 0;
1328 }
1329
1330 static void vnt_remove_interface(struct ieee80211_hw *hw,
1331                                  struct ieee80211_vif *vif)
1332 {
1333         struct vnt_private *priv = hw->priv;
1334
1335         switch (vif->type) {
1336         case NL80211_IFTYPE_STATION:
1337                 break;
1338         case NL80211_IFTYPE_ADHOC:
1339                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1340                 MACvRegBitsOff(priv->PortOffset,
1341                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1342                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1343                 break;
1344         case NL80211_IFTYPE_AP:
1345                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1346                 MACvRegBitsOff(priv->PortOffset,
1347                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1348                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1349                 break;
1350         default:
1351                 break;
1352         }
1353
1354         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1355 }
1356
1357 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1358 {
1359         struct vnt_private *priv = hw->priv;
1360         struct ieee80211_conf *conf = &hw->conf;
1361         u8 bb_type;
1362
1363         if (changed & IEEE80211_CONF_CHANGE_PS) {
1364                 if (conf->flags & IEEE80211_CONF_PS)
1365                         PSvEnablePowerSaving(priv, conf->listen_interval);
1366                 else
1367                         PSvDisablePowerSaving(priv);
1368         }
1369
1370         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1371             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1372                 set_channel(priv, conf->chandef.chan);
1373
1374                 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
1375                         bb_type = BB_TYPE_11A;
1376                 else
1377                         bb_type = BB_TYPE_11G;
1378
1379                 if (priv->byBBType != bb_type) {
1380                         priv->byBBType = bb_type;
1381
1382                         CARDbSetPhyParameter(priv, priv->byBBType);
1383                 }
1384         }
1385
1386         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1387                 if (priv->byBBType == BB_TYPE_11B)
1388                         priv->wCurrentRate = RATE_1M;
1389                 else
1390                         priv->wCurrentRate = RATE_54M;
1391
1392                 RFbSetPower(priv, priv->wCurrentRate,
1393                             conf->chandef.chan->hw_value);
1394         }
1395
1396         return 0;
1397 }
1398
1399 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1400                                  struct ieee80211_vif *vif,
1401                                  struct ieee80211_bss_conf *conf, u32 changed)
1402 {
1403         struct vnt_private *priv = hw->priv;
1404
1405         priv->current_aid = conf->aid;
1406
1407         if (changed & BSS_CHANGED_BSSID && conf->bssid) {
1408                 unsigned long flags;
1409
1410                 spin_lock_irqsave(&priv->lock, flags);
1411
1412                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1413
1414                 spin_unlock_irqrestore(&priv->lock, flags);
1415         }
1416
1417         if (changed & BSS_CHANGED_BASIC_RATES) {
1418                 priv->basic_rates = conf->basic_rates;
1419
1420                 CARDvUpdateBasicTopRate(priv);
1421
1422                 dev_dbg(&priv->pcid->dev,
1423                         "basic rates %x\n", conf->basic_rates);
1424         }
1425
1426         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1427                 if (conf->use_short_preamble) {
1428                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1429                         priv->byPreambleType = true;
1430                 } else {
1431                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1432                         priv->byPreambleType = false;
1433                 }
1434         }
1435
1436         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1437                 if (conf->use_cts_prot)
1438                         MACvEnableProtectMD(priv->PortOffset);
1439                 else
1440                         MACvDisableProtectMD(priv->PortOffset);
1441         }
1442
1443         if (changed & BSS_CHANGED_ERP_SLOT) {
1444                 if (conf->use_short_slot)
1445                         priv->bShortSlotTime = true;
1446                 else
1447                         priv->bShortSlotTime = false;
1448
1449                 CARDbSetPhyParameter(priv, priv->byBBType);
1450                 bb_set_vga_gain_offset(priv, priv->abyBBVGA[0]);
1451         }
1452
1453         if (changed & BSS_CHANGED_TXPOWER)
1454                 RFbSetPower(priv, priv->wCurrentRate,
1455                             conf->chandef.chan->hw_value);
1456
1457         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1458                 dev_dbg(&priv->pcid->dev,
1459                         "Beacon enable %d\n", conf->enable_beacon);
1460
1461                 if (conf->enable_beacon) {
1462                         vnt_beacon_enable(priv, vif, conf);
1463
1464                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1465                                       TCR_AUTOBCNTX);
1466                 } else {
1467                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1468                                        TCR_AUTOBCNTX);
1469                 }
1470         }
1471
1472         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
1473             priv->op_mode != NL80211_IFTYPE_AP) {
1474                 if (conf->assoc && conf->beacon_rate) {
1475                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1476                                        conf->sync_tsf);
1477
1478                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1479
1480                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1481                 } else {
1482                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1483                                      TFTCTL_TSFCNTRST);
1484                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1485                                      TFTCTL_TSFCNTREN);
1486                 }
1487         }
1488 }
1489
1490 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1491                                  struct netdev_hw_addr_list *mc_list)
1492 {
1493         struct vnt_private *priv = hw->priv;
1494         struct netdev_hw_addr *ha;
1495         u64 mc_filter = 0;
1496         u32 bit_nr = 0;
1497
1498         netdev_hw_addr_list_for_each(ha, mc_list) {
1499                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1500
1501                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1502         }
1503
1504         priv->mc_list_count = mc_list->count;
1505
1506         return mc_filter;
1507 }
1508
1509 static void vnt_configure(struct ieee80211_hw *hw,
1510                           unsigned int changed_flags,
1511                           unsigned int *total_flags, u64 multicast)
1512 {
1513         struct vnt_private *priv = hw->priv;
1514         u8 rx_mode = 0;
1515
1516         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
1517
1518         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1519
1520         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1521
1522         if (changed_flags & FIF_ALLMULTI) {
1523                 if (*total_flags & FIF_ALLMULTI) {
1524                         unsigned long flags;
1525
1526                         spin_lock_irqsave(&priv->lock, flags);
1527
1528                         if (priv->mc_list_count > 2) {
1529                                 MACvSelectPage1(priv->PortOffset);
1530
1531                                 VNSvOutPortD(priv->PortOffset +
1532                                              MAC_REG_MAR0, 0xffffffff);
1533                                 VNSvOutPortD(priv->PortOffset +
1534                                             MAC_REG_MAR0 + 4, 0xffffffff);
1535
1536                                 MACvSelectPage0(priv->PortOffset);
1537                         } else {
1538                                 MACvSelectPage1(priv->PortOffset);
1539
1540                                 VNSvOutPortD(priv->PortOffset +
1541                                              MAC_REG_MAR0, (u32)multicast);
1542                                 VNSvOutPortD(priv->PortOffset +
1543                                              MAC_REG_MAR0 + 4,
1544                                              (u32)(multicast >> 32));
1545
1546                                 MACvSelectPage0(priv->PortOffset);
1547                         }
1548
1549                         spin_unlock_irqrestore(&priv->lock, flags);
1550
1551                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1552                 } else {
1553                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1554                 }
1555         }
1556
1557         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1558                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1559
1560                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1561                         rx_mode &= ~RCR_BSSID;
1562                 else
1563                         rx_mode |= RCR_BSSID;
1564         }
1565
1566         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1567
1568         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1569 }
1570
1571 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1572                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1573                        struct ieee80211_key_conf *key)
1574 {
1575         struct vnt_private *priv = hw->priv;
1576
1577         switch (cmd) {
1578         case SET_KEY:
1579                 if (vnt_set_keys(hw, sta, vif, key))
1580                         return -EOPNOTSUPP;
1581                 break;
1582         case DISABLE_KEY:
1583                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1584                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1585                 break;
1586         default:
1587                 break;
1588         }
1589
1590         return 0;
1591 }
1592
1593 static int vnt_get_stats(struct ieee80211_hw *hw,
1594                          struct ieee80211_low_level_stats *stats)
1595 {
1596         struct vnt_private *priv = hw->priv;
1597
1598         memcpy(stats, &priv->low_stats, sizeof(*stats));
1599
1600         return 0;
1601 }
1602
1603 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1604 {
1605         struct vnt_private *priv = hw->priv;
1606         u64 tsf;
1607
1608         CARDbGetCurrentTSF(priv, &tsf);
1609
1610         return tsf;
1611 }
1612
1613 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1614                         u64 tsf)
1615 {
1616         struct vnt_private *priv = hw->priv;
1617
1618         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1619 }
1620
1621 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1622 {
1623         struct vnt_private *priv = hw->priv;
1624
1625         /* reset TSF counter */
1626         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1627 }
1628
1629 static const struct ieee80211_ops vnt_mac_ops = {
1630         .tx                     = vnt_tx_80211,
1631         .start                  = vnt_start,
1632         .stop                   = vnt_stop,
1633         .add_interface          = vnt_add_interface,
1634         .remove_interface       = vnt_remove_interface,
1635         .config                 = vnt_config,
1636         .bss_info_changed       = vnt_bss_info_changed,
1637         .prepare_multicast      = vnt_prepare_multicast,
1638         .configure_filter       = vnt_configure,
1639         .set_key                = vnt_set_key,
1640         .get_stats              = vnt_get_stats,
1641         .get_tsf                = vnt_get_tsf,
1642         .set_tsf                = vnt_set_tsf,
1643         .reset_tsf              = vnt_reset_tsf,
1644 };
1645
1646 static int vnt_init(struct vnt_private *priv)
1647 {
1648         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1649
1650         vnt_init_bands(priv);
1651
1652         if (ieee80211_register_hw(priv->hw))
1653                 return -ENODEV;
1654
1655         priv->mac_hw = true;
1656
1657         CARDbRadioPowerOff(priv);
1658
1659         return 0;
1660 }
1661
1662 static int
1663 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1664 {
1665         struct vnt_private *priv;
1666         struct ieee80211_hw *hw;
1667         struct wiphy *wiphy;
1668         int         rc;
1669
1670         dev_notice(&pcid->dev,
1671                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1672
1673         dev_notice(&pcid->dev,
1674                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1675
1676         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1677         if (!hw) {
1678                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1679                 return -ENOMEM;
1680         }
1681
1682         priv = hw->priv;
1683         priv->pcid = pcid;
1684
1685         spin_lock_init(&priv->lock);
1686
1687         priv->hw = hw;
1688
1689         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1690
1691         if (pci_enable_device(pcid)) {
1692                 device_free_info(priv);
1693                 return -ENODEV;
1694         }
1695
1696         dev_dbg(&pcid->dev,
1697                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1698
1699         pci_set_master(pcid);
1700
1701         priv->memaddr = pci_resource_start(pcid, 0);
1702         priv->ioaddr = pci_resource_start(pcid, 1);
1703         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1704                                    256);
1705         if (!priv->PortOffset) {
1706                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1707                 device_free_info(priv);
1708                 return -ENODEV;
1709         }
1710
1711         rc = pci_request_regions(pcid, DEVICE_NAME);
1712         if (rc) {
1713                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1714                 device_free_info(priv);
1715                 return -ENODEV;
1716         }
1717
1718         if (dma_set_mask(&pcid->dev, DMA_BIT_MASK(32))) {
1719                 dev_err(&pcid->dev, ": Failed to set dma 32 bit mask\n");
1720                 device_free_info(priv);
1721                 return -ENODEV;
1722         }
1723
1724         INIT_WORK(&priv->interrupt_work, vnt_interrupt_work);
1725
1726         /* do reset */
1727         if (!MACbSoftwareReset(priv)) {
1728                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1729                 device_free_info(priv);
1730                 return -ENODEV;
1731         }
1732         /* initial to reload eeprom */
1733         MACvInitialize(priv);
1734         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1735
1736         /* Get RFType */
1737         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1738         priv->byRFType &= RF_MASK;
1739
1740         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1741
1742         device_get_options(priv);
1743         device_set_options(priv);
1744
1745         wiphy = priv->hw->wiphy;
1746
1747         wiphy->frag_threshold = FRAG_THRESH_DEF;
1748         wiphy->rts_threshold = RTS_THRESH_DEF;
1749         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1750                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1751
1752         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1753         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1754         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1755         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1756         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1757
1758         priv->hw->max_signal = 100;
1759
1760         if (vnt_init(priv)) {
1761                 device_free_info(priv);
1762                 return -ENODEV;
1763         }
1764
1765         device_print_info(priv);
1766         pci_set_drvdata(pcid, priv);
1767
1768         return 0;
1769 }
1770
1771 /*------------------------------------------------------------------*/
1772
1773 static int __maybe_unused vt6655_suspend(struct device *dev_d)
1774 {
1775         struct vnt_private *priv = dev_get_drvdata(dev_d);
1776         unsigned long flags;
1777
1778         spin_lock_irqsave(&priv->lock, flags);
1779
1780         MACbShutdown(priv);
1781
1782         spin_unlock_irqrestore(&priv->lock, flags);
1783
1784         return 0;
1785 }
1786
1787 static int __maybe_unused vt6655_resume(struct device *dev_d)
1788 {
1789         device_wakeup_disable(dev_d);
1790
1791         return 0;
1792 }
1793
1794 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1795
1796 static SIMPLE_DEV_PM_OPS(vt6655_pm_ops, vt6655_suspend, vt6655_resume);
1797
1798 static struct pci_driver device_driver = {
1799         .name = DEVICE_NAME,
1800         .id_table = vt6655_pci_id_table,
1801         .probe = vt6655_probe,
1802         .remove = vt6655_remove,
1803         .driver.pm = &vt6655_pm_ops,
1804 };
1805
1806 module_pci_driver(device_driver);