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 #undef __NO_VERSION__
  36
  37 #include <linux/file.h>
  38 #include "device.h"
  39 #include "card.h"
  40 #include "channel.h"
  41 #include "baseband.h"
  42 #include "mac.h"
  43 #include "power.h"
  44 #include "rxtx.h"
  45 #include "dpc.h"
  46 #include "rf.h"
  47 #include <linux/delay.h>
  48 #include <linux/kthread.h>
  49 #include <linux/slab.h>
  50
  51 /*---------------------  Static Definitions -------------------------*/
  52 /*
  53  * Define module options
  54  */
  55 MODULE_AUTHOR("VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>");
  56 MODULE_LICENSE("GPL");
  57 MODULE_DESCRIPTION("VIA Networking Solomon-A/B/G Wireless LAN Adapter Driver");
  58
  59 #define DEVICE_PARAM(N, D)
  60
  61 #define RX_DESC_MIN0     16
  62 #define RX_DESC_MAX0     128
  63 #define RX_DESC_DEF0     32
  64 DEVICE_PARAM(RxDescriptors0, "Number of receive descriptors0");
  65
  66 #define RX_DESC_MIN1     16
  67 #define RX_DESC_MAX1     128
  68 #define RX_DESC_DEF1     32
  69 DEVICE_PARAM(RxDescriptors1, "Number of receive descriptors1");
  70
  71 #define TX_DESC_MIN0     16
  72 #define TX_DESC_MAX0     128
  73 #define TX_DESC_DEF0     32
  74 DEVICE_PARAM(TxDescriptors0, "Number of transmit descriptors0");
  75
  76 #define TX_DESC_MIN1     16
  77 #define TX_DESC_MAX1     128
  78 #define TX_DESC_DEF1     64
  79 DEVICE_PARAM(TxDescriptors1, "Number of transmit descriptors1");
  80
  81 #define INT_WORKS_DEF   20
  82 #define INT_WORKS_MIN   10
  83 #define INT_WORKS_MAX   64
  84
  85 DEVICE_PARAM(int_works, "Number of packets per interrupt services");
  86
  87 #define RTS_THRESH_DEF     2347
  88
  89 #define FRAG_THRESH_DEF     2346
  90
  91 #define SHORT_RETRY_MIN     0
  92 #define SHORT_RETRY_MAX     31
  93 #define SHORT_RETRY_DEF     8
  94
  95 DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");
  96
  97 #define LONG_RETRY_MIN     0
  98 #define LONG_RETRY_MAX     15
  99 #define LONG_RETRY_DEF     4
 100
 101 DEVICE_PARAM(LongRetryLimit, "long frame retry limits");
 102
 103 /* BasebandType[] baseband type selected
 104  * 0: indicate 802.11a type
 105  * 1: indicate 802.11b type
 106  * 2: indicate 802.11g type
 107  */
 108 #define BBP_TYPE_MIN     0
 109 #define BBP_TYPE_MAX     2
 110 #define BBP_TYPE_DEF     2
 111
 112 DEVICE_PARAM(BasebandType, "baseband type");
 113
 114 /*
 115  * Static vars definitions
 116  */
 117 static const struct pci_device_id vt6655_pci_id_table[] = {
 118         { PCI_VDEVICE(VIA, 0x3253) },
 119         { 0, }
 120 };
 121
 122 /*---------------------  Static Functions  --------------------------*/
 123
 124 static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
 125 static void device_free_info(struct vnt_private *priv);
 126 static void device_print_info(struct vnt_private *priv);
 127
 128 static int device_init_rd0_ring(struct vnt_private *priv);
 129 static int device_init_rd1_ring(struct vnt_private *priv);
 130 static int device_init_td0_ring(struct vnt_private *priv);
 131 static int device_init_td1_ring(struct vnt_private *priv);
 132
 133 static int  device_rx_srv(struct vnt_private *priv, unsigned int idx);
 134 static int  device_tx_srv(struct vnt_private *priv, unsigned int idx);
 135 static bool device_alloc_rx_buf(struct vnt_private *, struct vnt_rx_desc *);
 136 static void device_free_rx_buf(struct vnt_private *priv, 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         BBvSoftwareReset(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         BBvSetTxAntennaMode(priv, priv->byTxAntennaMode);
 282         BBvSetRxAntennaMode(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, EEP_OFS_PWR_OFDMG);
 299
 300         /* Load power Table */
 301         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 302                 priv->abyCCKPwrTbl[ii + 1] =
 303                         SROMbyReadEmbedded(priv->PortOffset,
 304                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 305                 if (priv->abyCCKPwrTbl[ii + 1] == 0)
 306                         priv->abyCCKPwrTbl[ii + 1] = priv->byCCKPwr;
 307
 308                 priv->abyOFDMPwrTbl[ii + 1] =
 309                         SROMbyReadEmbedded(priv->PortOffset,
 310                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 311                 if (priv->abyOFDMPwrTbl[ii + 1] == 0)
 312                         priv->abyOFDMPwrTbl[ii + 1] = priv->byOFDMPwrG;
 313
 314                 priv->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 315                 priv->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 316         }
 317
 318         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 319         for (ii = 11; ii < 14; ii++) {
 320                 priv->abyCCKPwrTbl[ii] = priv->abyCCKPwrTbl[10];
 321                 priv->abyOFDMPwrTbl[ii] = priv->abyOFDMPwrTbl[10];
 322         }
 323
 324         /* Load OFDM A Power Table */
 325         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 326                 priv->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 327                         SROMbyReadEmbedded(priv->PortOffset,
 328                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 329
 330                 priv->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 331                         SROMbyReadEmbedded(priv->PortOffset,
 332                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 333         }
 334
 335         if (priv->byLocalID > REV_ID_VT3253_B1) {
 336                 MACvSelectPage1(priv->PortOffset);
 337
 338                 VNSvOutPortB(priv->PortOffset + MAC_REG_MSRCTL + 1,
 339                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 340
 341                 MACvSelectPage0(priv->PortOffset);
 342         }
 343
 344         /* use relative tx timeout and 802.11i D4 */
 345         MACvWordRegBitsOn(priv->PortOffset,
 346                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 347
 348         /* set performance parameter by registry */
 349         MACvSetShortRetryLimit(priv, priv->byShortRetryLimit);
 350         MACvSetLongRetryLimit(priv, priv->byLongRetryLimit);
 351
 352         /* reset TSF counter */
 353         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 354         /* enable TSF counter */
 355         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 356
 357         /* initialize BBP registers */
 358         BBbVT3253Init(priv);
 359
 360         if (priv->bUpdateBBVGA) {
 361                 priv->byBBVGACurrent = priv->abyBBVGA[0];
 362                 priv->byBBVGANew = priv->byBBVGACurrent;
 363                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
 364         }
 365
 366         BBvSetRxAntennaMode(priv, priv->byRxAntennaMode);
 367         BBvSetTxAntennaMode(priv, priv->byTxAntennaMode);
 368
 369         /* Set BB and packet type at the same time. */
 370         /* Set Short Slot Time, xIFS, and RSPINF. */
 371         priv->wCurrentRate = RATE_54M;
 372
 373         priv->bRadioOff = false;
 374
 375         priv->byRadioCtl = SROMbyReadEmbedded(priv->PortOffset,
 376                                                  EEP_OFS_RADIOCTL);
 377         priv->bHWRadioOff = false;
 378
 379         if (priv->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 380                 /* Get GPIO */
 381                 MACvGPIOIn(priv->PortOffset, &priv->byGPIO);
 382
 383                 if (((priv->byGPIO & GPIO0_DATA) &&
 384                      !(priv->byRadioCtl & EEP_RADIOCTL_INV)) ||
 385                      (!(priv->byGPIO & GPIO0_DATA) &&
 386                      (priv->byRadioCtl & EEP_RADIOCTL_INV)))
 387                         priv->bHWRadioOff = true;
 388         }
 389
 390         if (priv->bHWRadioOff || priv->bRadioControlOff)
 391                 CARDbRadioPowerOff(priv);
 392
 393         /* get Permanent network address */
 394         SROMvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
 395         pr_debug("Network address = %pM\n", priv->abyCurrentNetAddr);
 396
 397         /* reset Tx pointer */
 398         CARDvSafeResetRx(priv);
 399         /* reset Rx pointer */
 400         CARDvSafeResetTx(priv);
 401
 402         if (priv->byLocalID <= REV_ID_VT3253_A1)
 403                 MACvRegBitsOn(priv->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 404
 405         /* Turn On Rx DMA */
 406         MACvReceive0(priv->PortOffset);
 407         MACvReceive1(priv->PortOffset);
 408
 409         /* start the adapter */
 410         MACvStart(priv->PortOffset);
 411 }
 412
 413 static void device_print_info(struct vnt_private *priv)
 414 {
 415         dev_info(&priv->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 416                  priv->abyCurrentNetAddr, (unsigned long)priv->ioaddr,
 417                  (unsigned long)priv->PortOffset, priv->pcid->irq);
 418 }
 419
 420 static void device_free_info(struct vnt_private *priv)
 421 {
 422         if (!priv)
 423                 return;
 424
 425         if (priv->mac_hw)
 426                 ieee80211_unregister_hw(priv->hw);
 427
 428         if (priv->PortOffset)
 429                 iounmap(priv->PortOffset);
 430
 431         if (priv->pcid)
 432                 pci_release_regions(priv->pcid);
 433
 434         if (priv->hw)
 435                 ieee80211_free_hw(priv->hw);
 436 }
 437
 438 static bool device_init_rings(struct vnt_private *priv)
 439 {
 440         void *vir_pool;
 441
 442         /*allocate all RD/TD rings a single pool*/
 443         vir_pool = dma_zalloc_coherent(&priv->pcid->dev,
 444                                        priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 445                                        priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 446                                        priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 447                                        priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 448                                        &priv->pool_dma, GFP_ATOMIC);
 449         if (!vir_pool) {
 450                 dev_err(&priv->pcid->dev, "allocate desc dma memory failed\n");
 451                 return false;
 452         }
 453
 454         priv->aRD0Ring = vir_pool;
 455         priv->aRD1Ring = vir_pool +
 456                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 457
 458         priv->rd0_pool_dma = priv->pool_dma;
 459         priv->rd1_pool_dma = priv->rd0_pool_dma +
 460                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 461
 462         priv->tx0_bufs = dma_zalloc_coherent(&priv->pcid->dev,
 463                                              priv->opts.tx_descs[0] * PKT_BUF_SZ +
 464                                              priv->opts.tx_descs[1] * PKT_BUF_SZ +
 465                                              CB_BEACON_BUF_SIZE +
 466                                              CB_MAX_BUF_SIZE,
 467                                              &priv->tx_bufs_dma0,
 468                                              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 + sizeof(struct vnt_tx_desc));
 671         }
 672
 673         if (i > 0)
 674                 priv->apTD0Rings[i-1].next_desc = cpu_to_le32(priv->td0_pool_dma);
 675         priv->apTailTD[0] = priv->apCurrTD[0] = &priv->apTD0Rings[0];
 676
 677         return 0;
 678
 679 err_free_desc:
 680         while (--i) {
 681                 desc = &priv->apTD0Rings[i];
 682                 kfree(desc->td_info);
 683         }
 684
 685         return ret;
 686 }
 687
 688 static int device_init_td1_ring(struct vnt_private *priv)
 689 {
 690         int i;
 691         dma_addr_t  curr;
 692         struct vnt_tx_desc *desc;
 693         int ret;
 694
 695         /* Init the TD ring entries */
 696         curr = priv->td1_pool_dma;
 697         for (i = 0; i < priv->opts.tx_descs[1];
 698              i++, curr += sizeof(struct vnt_tx_desc)) {
 699                 desc = &priv->apTD1Rings[i];
 700                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_KERNEL);
 701                 if (!desc->td_info) {
 702                         ret = -ENOMEM;
 703                         goto err_free_desc;
 704                 }
 705
 706                 desc->td_info->buf = priv->tx1_bufs + i * PKT_BUF_SZ;
 707                 desc->td_info->buf_dma = priv->tx_bufs_dma1 + i * PKT_BUF_SZ;
 708
 709                 desc->next = &(priv->apTD1Rings[(i + 1) % priv->opts.tx_descs[1]]);
 710                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 711         }
 712
 713         if (i > 0)
 714                 priv->apTD1Rings[i-1].next_desc = cpu_to_le32(priv->td1_pool_dma);
 715         priv->apTailTD[1] = priv->apCurrTD[1] = &priv->apTD1Rings[0];
 716
 717         return 0;
 718
 719 err_free_desc:
 720         while (--i) {
 721                 desc = &priv->apTD1Rings[i];
 722                 kfree(desc->td_info);
 723         }
 724
 725         return ret;
 726 }
 727
 728 static void device_free_td0_ring(struct vnt_private *priv)
 729 {
 730         int i;
 731
 732         for (i = 0; i < priv->opts.tx_descs[0]; i++) {
 733                 struct vnt_tx_desc *desc = &priv->apTD0Rings[i];
 734                 struct vnt_td_info *td_info = desc->td_info;
 735
 736                 dev_kfree_skb(td_info->skb);
 737                 kfree(desc->td_info);
 738         }
 739 }
 740
 741 static void device_free_td1_ring(struct vnt_private *priv)
 742 {
 743         int i;
 744
 745         for (i = 0; i < priv->opts.tx_descs[1]; i++) {
 746                 struct vnt_tx_desc *desc = &priv->apTD1Rings[i];
 747                 struct vnt_td_info *td_info = desc->td_info;
 748
 749                 dev_kfree_skb(td_info->skb);
 750                 kfree(desc->td_info);
 751         }
 752 }
 753
 754 /*-----------------------------------------------------------------*/
 755
 756 static int device_rx_srv(struct vnt_private *priv, unsigned int idx)
 757 {
 758         struct vnt_rx_desc *rd;
 759         int works = 0;
 760
 761         for (rd = priv->pCurrRD[idx];
 762              rd->rd0.owner == OWNED_BY_HOST;
 763              rd = rd->next) {
 764                 if (works++ > 15)
 765                         break;
 766
 767                 if (!rd->rd_info->skb)
 768                         break;
 769
 770                 if (vnt_receive_frame(priv, rd)) {
 771                         if (!device_alloc_rx_buf(priv, rd)) {
 772                                 dev_err(&priv->pcid->dev,
 773                                         "can not allocate rx buf\n");
 774                                 break;
 775                         }
 776                 }
 777                 rd->rd0.owner = OWNED_BY_NIC;
 778         }
 779
 780         priv->pCurrRD[idx] = rd;
 781
 782         return works;
 783 }
 784
 785 static bool device_alloc_rx_buf(struct vnt_private *priv,
 786                                 struct vnt_rx_desc *rd)
 787 {
 788         struct vnt_rd_info *rd_info = rd->rd_info;
 789
 790         rd_info->skb = dev_alloc_skb((int)priv->rx_buf_sz);
 791         if (!rd_info->skb)
 792                 return false;
 793
 794         rd_info->skb_dma =
 795                 dma_map_single(&priv->pcid->dev,
 796                                skb_put(rd_info->skb, skb_tailroom(rd_info->skb)),
 797                                priv->rx_buf_sz, DMA_FROM_DEVICE);
 798         if (dma_mapping_error(&priv->pcid->dev, rd_info->skb_dma)) {
 799                 dev_kfree_skb(rd_info->skb);
 800                 rd_info->skb = NULL;
 801                 return false;
 802         }
 803
 804         *((unsigned int *)&rd->rd0) = 0; /* FIX cast */
 805
 806         rd->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
 807         rd->rd0.owner = OWNED_BY_NIC;
 808         rd->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
 809         rd->buff_addr = cpu_to_le32(rd_info->skb_dma);
 810
 811         return true;
 812 }
 813
 814 static void device_free_rx_buf(struct vnt_private *priv,
 815                                 struct vnt_rx_desc *rd)
 816 {
 817         struct vnt_rd_info *rd_info = rd->rd_info;
 818
 819         dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
 820                         priv->rx_buf_sz, DMA_FROM_DEVICE);
 821         dev_kfree_skb(rd_info->skb);
 822 }
 823
 824 static const u8 fallback_rate0[5][5] = {
 825         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 826         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 827         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 828         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 829         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 830 };
 831
 832 static const u8 fallback_rate1[5][5] = {
 833         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 834         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 835         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 836         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 837         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 838 };
 839
 840 static int vnt_int_report_rate(struct vnt_private *priv,
 841                                struct vnt_td_info *context, u8 tsr0, u8 tsr1)
 842 {
 843         struct vnt_tx_fifo_head *fifo_head;
 844         struct ieee80211_tx_info *info;
 845         struct ieee80211_rate *rate;
 846         u16 fb_option;
 847         u8 tx_retry = (tsr0 & TSR0_NCR);
 848         s8 idx;
 849
 850         if (!context)
 851                 return -ENOMEM;
 852
 853         if (!context->skb)
 854                 return -EINVAL;
 855
 856         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 857         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 858                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 859
 860         info = IEEE80211_SKB_CB(context->skb);
 861         idx = info->control.rates[0].idx;
 862
 863         if (fb_option && !(tsr1 & TSR1_TERR)) {
 864                 u8 tx_rate;
 865                 u8 retry = tx_retry;
 866
 867                 rate = ieee80211_get_tx_rate(priv->hw, info);
 868                 tx_rate = rate->hw_value - RATE_18M;
 869
 870                 if (retry > 4)
 871                         retry = 4;
 872
 873                 if (fb_option & FIFOCTL_AUTO_FB_0)
 874                         tx_rate = fallback_rate0[tx_rate][retry];
 875                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 876                         tx_rate = fallback_rate1[tx_rate][retry];
 877
 878                 if (info->band == NL80211_BAND_5GHZ)
 879                         idx = tx_rate - RATE_6M;
 880                 else
 881                         idx = tx_rate;
 882         }
 883
 884         ieee80211_tx_info_clear_status(info);
 885
 886         info->status.rates[0].count = tx_retry;
 887
 888         if (!(tsr1 & TSR1_TERR)) {
 889                 info->status.rates[0].idx = idx;
 890
 891                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 892                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 893                 else
 894                         info->flags |= IEEE80211_TX_STAT_ACK;
 895         }
 896
 897         return 0;
 898 }
 899
 900 static int device_tx_srv(struct vnt_private *priv, unsigned int idx)
 901 {
 902         struct vnt_tx_desc *desc;
 903         int                      works = 0;
 904         unsigned char byTsr0;
 905         unsigned char byTsr1;
 906
 907         for (desc = priv->apTailTD[idx]; priv->iTDUsed[idx] > 0; desc = desc->next) {
 908                 if (desc->td0.owner == OWNED_BY_NIC)
 909                         break;
 910                 if (works++ > 15)
 911                         break;
 912
 913                 byTsr0 = desc->td0.tsr0;
 914                 byTsr1 = desc->td0.tsr1;
 915
 916                 /* Only the status of first TD in the chain is correct */
 917                 if (desc->td1.tcr & TCR_STP) {
 918                         if ((desc->td_info->flags & TD_FLAGS_NETIF_SKB) != 0) {
 919                                 if (!(byTsr1 & TSR1_TERR)) {
 920                                         if (byTsr0 != 0) {
 921                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 922                                                          (int)idx, byTsr1,
 923                                                          byTsr0);
 924                                         }
 925                                 } else {
 926                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 927                                                  (int)idx, byTsr1, byTsr0);
 928                                 }
 929                         }
 930
 931                         if (byTsr1 & TSR1_TERR) {
 932                                 if ((desc->td_info->flags & TD_FLAGS_PRIV_SKB) != 0) {
 933                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 934                                                  (int)idx, byTsr1, byTsr0);
 935                                 }
 936                         }
 937
 938                         vnt_int_report_rate(priv, desc->td_info, byTsr0, byTsr1);
 939
 940                         device_free_tx_buf(priv, desc);
 941                         priv->iTDUsed[idx]--;
 942                 }
 943         }
 944
 945         priv->apTailTD[idx] = desc;
 946
 947         return works;
 948 }
 949
 950 static void device_error(struct vnt_private *priv, unsigned short status)
 951 {
 952         if (status & ISR_FETALERR) {
 953                 dev_err(&priv->pcid->dev, "Hardware fatal error\n");
 954
 955                 MACbShutdown(priv);
 956                 return;
 957         }
 958 }
 959
 960 static void device_free_tx_buf(struct vnt_private *priv,
 961                                struct vnt_tx_desc *desc)
 962 {
 963         struct vnt_td_info *td_info = desc->td_info;
 964         struct sk_buff *skb = td_info->skb;
 965
 966         if (skb)
 967                 ieee80211_tx_status_irqsafe(priv->hw, skb);
 968
 969         td_info->skb = NULL;
 970         td_info->flags = 0;
 971 }
 972
 973 static void vnt_check_bb_vga(struct vnt_private *priv)
 974 {
 975         long dbm;
 976         int i;
 977
 978         if (!priv->bUpdateBBVGA)
 979                 return;
 980
 981         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
 982                 return;
 983
 984         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
 985                 return;
 986
 987         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
 988
 989         for (i = 0; i < BB_VGA_LEVEL; i++) {
 990                 if (dbm < priv->ldBmThreshold[i]) {
 991                         priv->byBBVGANew = priv->abyBBVGA[i];
 992                         break;
 993                 }
 994         }
 995
 996         if (priv->byBBVGANew == priv->byBBVGACurrent) {
 997                 priv->uBBVGADiffCount = 1;
 998                 return;
 999         }
1000
1001         priv->uBBVGADiffCount++;
1002
1003         if (priv->uBBVGADiffCount == 1) {
1004                 /* first VGA diff gain */
1005                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1006
1007                 dev_dbg(&priv->pcid->dev,
1008                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1009                         (int)dbm, priv->byBBVGANew,
1010                         priv->byBBVGACurrent,
1011                         (int)priv->uBBVGADiffCount);
1012         }
1013
1014         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1015                 dev_dbg(&priv->pcid->dev,
1016                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1017                         (int)dbm, priv->byBBVGANew,
1018                         priv->byBBVGACurrent,
1019                         (int)priv->uBBVGADiffCount);
1020
1021                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1022         }
1023 }
1024
1025 static void vnt_interrupt_process(struct vnt_private *priv)
1026 {
1027         struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
1028         int             max_count = 0;
1029         u32 mib_counter;
1030         u32 isr;
1031         unsigned long flags;
1032
1033         MACvReadISR(priv->PortOffset, &isr);
1034
1035         if (isr == 0)
1036                 return;
1037
1038         if (isr == 0xffffffff) {
1039                 pr_debug("isr = 0xffff\n");
1040                 return;
1041         }
1042
1043         MACvIntDisable(priv->PortOffset);
1044
1045         spin_lock_irqsave(&priv->lock, flags);
1046
1047         /* Read low level stats */
1048         MACvReadMIBCounter(priv->PortOffset, &mib_counter);
1049
1050         low_stats->dot11RTSSuccessCount += mib_counter & 0xff;
1051         low_stats->dot11RTSFailureCount += (mib_counter >> 8) & 0xff;
1052         low_stats->dot11ACKFailureCount += (mib_counter >> 16) & 0xff;
1053         low_stats->dot11FCSErrorCount += (mib_counter >> 24) & 0xff;
1054
1055         /*
1056          * TBD....
1057          * Must do this after doing rx/tx, cause ISR bit is slow
1058          * than RD/TD write back
1059          * update ISR counter
1060          */
1061         while (isr && priv->vif) {
1062                 MACvWriteISR(priv->PortOffset, isr);
1063
1064                 if (isr & ISR_FETALERR) {
1065                         pr_debug(" ISR_FETALERR\n");
1066                         VNSvOutPortB(priv->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1067                         VNSvOutPortW(priv->PortOffset +
1068                                      MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1069                         device_error(priv, isr);
1070                 }
1071
1072                 if (isr & ISR_TBTT) {
1073                         if (priv->op_mode != NL80211_IFTYPE_ADHOC)
1074                                 vnt_check_bb_vga(priv);
1075
1076                         priv->bBeaconSent = false;
1077                         if (priv->bEnablePSMode)
1078                                 PSbIsNextTBTTWakeUp((void *)priv);
1079
1080                         if ((priv->op_mode == NL80211_IFTYPE_AP ||
1081                             priv->op_mode == NL80211_IFTYPE_ADHOC) &&
1082                             priv->vif->bss_conf.enable_beacon) {
1083                                 MACvOneShotTimer1MicroSec(priv,
1084                                                           (priv->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1085                         }
1086
1087                         /* TODO: adhoc PS mode */
1088                 }
1089
1090                 if (isr & ISR_BNTX) {
1091                         if (priv->op_mode == NL80211_IFTYPE_ADHOC) {
1092                                 priv->bIsBeaconBufReadySet = false;
1093                                 priv->cbBeaconBufReadySetCnt = 0;
1094                         }
1095
1096                         priv->bBeaconSent = true;
1097                 }
1098
1099                 if (isr & ISR_RXDMA0)
1100                         max_count += device_rx_srv(priv, TYPE_RXDMA0);
1101
1102                 if (isr & ISR_RXDMA1)
1103                         max_count += device_rx_srv(priv, TYPE_RXDMA1);
1104
1105                 if (isr & ISR_TXDMA0)
1106                         max_count += device_tx_srv(priv, TYPE_TXDMA0);
1107
1108                 if (isr & ISR_AC0DMA)
1109                         max_count += device_tx_srv(priv, TYPE_AC0DMA);
1110
1111                 if (isr & ISR_SOFTTIMER1) {
1112                         if (priv->vif->bss_conf.enable_beacon)
1113                                 vnt_beacon_make(priv, priv->vif);
1114                 }
1115
1116                 /* If both buffers available wake the queue */
1117                 if (AVAIL_TD(priv, TYPE_TXDMA0) &&
1118                     AVAIL_TD(priv, TYPE_AC0DMA) &&
1119                     ieee80211_queue_stopped(priv->hw, 0))
1120                         ieee80211_wake_queues(priv->hw);
1121
1122                 MACvReadISR(priv->PortOffset, &isr);
1123
1124                 MACvReceive0(priv->PortOffset);
1125                 MACvReceive1(priv->PortOffset);
1126
1127                 if (max_count > priv->opts.int_works)
1128                         break;
1129         }
1130
1131         spin_unlock_irqrestore(&priv->lock, flags);
1132
1133         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1134 }
1135
1136 static void vnt_interrupt_work(struct work_struct *work)
1137 {
1138         struct vnt_private *priv =
1139                 container_of(work, struct vnt_private, interrupt_work);
1140
1141         if (priv->vif)
1142                 vnt_interrupt_process(priv);
1143 }
1144
1145 static irqreturn_t vnt_interrupt(int irq,  void *arg)
1146 {
1147         struct vnt_private *priv = arg;
1148
1149         if (priv->vif)
1150                 schedule_work(&priv->interrupt_work);
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                 BBvSetVGAGainOffset(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         default:
1586                 break;
1587         }
1588
1589         return 0;
1590 }
1591
1592 static int vnt_get_stats(struct ieee80211_hw *hw,
1593                          struct ieee80211_low_level_stats *stats)
1594 {
1595         struct vnt_private *priv = hw->priv;
1596
1597         memcpy(stats, &priv->low_stats, sizeof(*stats));
1598
1599         return 0;
1600 }
1601
1602 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1603 {
1604         struct vnt_private *priv = hw->priv;
1605         u64 tsf;
1606
1607         CARDbGetCurrentTSF(priv, &tsf);
1608
1609         return tsf;
1610 }
1611
1612 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1613                         u64 tsf)
1614 {
1615         struct vnt_private *priv = hw->priv;
1616
1617         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1618 }
1619
1620 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1621 {
1622         struct vnt_private *priv = hw->priv;
1623
1624         /* reset TSF counter */
1625         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1626 }
1627
1628 static const struct ieee80211_ops vnt_mac_ops = {
1629         .tx                     = vnt_tx_80211,
1630         .start                  = vnt_start,
1631         .stop                   = vnt_stop,
1632         .add_interface          = vnt_add_interface,
1633         .remove_interface       = vnt_remove_interface,
1634         .config                 = vnt_config,
1635         .bss_info_changed       = vnt_bss_info_changed,
1636         .prepare_multicast      = vnt_prepare_multicast,
1637         .configure_filter       = vnt_configure,
1638         .set_key                = vnt_set_key,
1639         .get_stats              = vnt_get_stats,
1640         .get_tsf                = vnt_get_tsf,
1641         .set_tsf                = vnt_set_tsf,
1642         .reset_tsf              = vnt_reset_tsf,
1643 };
1644
1645 static int vnt_init(struct vnt_private *priv)
1646 {
1647         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1648
1649         vnt_init_bands(priv);
1650
1651         if (ieee80211_register_hw(priv->hw))
1652                 return -ENODEV;
1653
1654         priv->mac_hw = true;
1655
1656         CARDbRadioPowerOff(priv);
1657
1658         return 0;
1659 }
1660
1661 static int
1662 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1663 {
1664         struct vnt_private *priv;
1665         struct ieee80211_hw *hw;
1666         struct wiphy *wiphy;
1667         int         rc;
1668
1669         dev_notice(&pcid->dev,
1670                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1671
1672         dev_notice(&pcid->dev,
1673                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1674
1675         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1676         if (!hw) {
1677                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1678                 return -ENOMEM;
1679         }
1680
1681         priv = hw->priv;
1682         priv->pcid = pcid;
1683
1684         spin_lock_init(&priv->lock);
1685
1686         priv->hw = hw;
1687
1688         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1689
1690         if (pci_enable_device(pcid)) {
1691                 device_free_info(priv);
1692                 return -ENODEV;
1693         }
1694
1695         dev_dbg(&pcid->dev,
1696                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1697
1698         pci_set_master(pcid);
1699
1700         priv->memaddr = pci_resource_start(pcid, 0);
1701         priv->ioaddr = pci_resource_start(pcid, 1);
1702         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1703                                    256);
1704         if (!priv->PortOffset) {
1705                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1706                 device_free_info(priv);
1707                 return -ENODEV;
1708         }
1709
1710         rc = pci_request_regions(pcid, DEVICE_NAME);
1711         if (rc) {
1712                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1713                 device_free_info(priv);
1714                 return -ENODEV;
1715         }
1716
1717         if (dma_set_mask(&pcid->dev, DMA_BIT_MASK(32))) {
1718                 dev_err(&pcid->dev, ": Failed to set dma 32 bit mask\n");
1719                 device_free_info(priv);
1720                 return -ENODEV;
1721         }
1722
1723         INIT_WORK(&priv->interrupt_work, vnt_interrupt_work);
1724
1725         /* do reset */
1726         if (!MACbSoftwareReset(priv)) {
1727                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1728                 device_free_info(priv);
1729                 return -ENODEV;
1730         }
1731         /* initial to reload eeprom */
1732         MACvInitialize(priv);
1733         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1734
1735         /* Get RFType */
1736         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1737         priv->byRFType &= RF_MASK;
1738
1739         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1740
1741         device_get_options(priv);
1742         device_set_options(priv);
1743
1744         wiphy = priv->hw->wiphy;
1745
1746         wiphy->frag_threshold = FRAG_THRESH_DEF;
1747         wiphy->rts_threshold = RTS_THRESH_DEF;
1748         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1749                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1750
1751         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1752         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1753         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1754         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1755         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1756
1757         priv->hw->max_signal = 100;
1758
1759         if (vnt_init(priv))
1760                 return -ENODEV;
1761
1762         device_print_info(priv);
1763         pci_set_drvdata(pcid, priv);
1764
1765         return 0;
1766 }
1767
1768 /*------------------------------------------------------------------*/
1769
1770 #ifdef CONFIG_PM
1771 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1772 {
1773         struct vnt_private *priv = pci_get_drvdata(pcid);
1774         unsigned long flags;
1775
1776         spin_lock_irqsave(&priv->lock, flags);
1777
1778         pci_save_state(pcid);
1779
1780         MACbShutdown(priv);
1781
1782         pci_disable_device(pcid);
1783
1784         spin_unlock_irqrestore(&priv->lock, flags);
1785
1786         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1787
1788         return 0;
1789 }
1790
1791 static int vt6655_resume(struct pci_dev *pcid)
1792 {
1793         pci_set_power_state(pcid, PCI_D0);
1794         pci_enable_wake(pcid, PCI_D0, 0);
1795         pci_restore_state(pcid);
1796
1797         return 0;
1798 }
1799 #endif
1800
1801 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1802
1803 static struct pci_driver device_driver = {
1804         .name = DEVICE_NAME,
1805         .id_table = vt6655_pci_id_table,
1806         .probe = vt6655_probe,
1807         .remove = vt6655_remove,
1808 #ifdef CONFIG_PM
1809         .suspend = vt6655_suspend,
1810         .resume = vt6655_resume,
1811 #endif
1812 };
1813
1814 module_pci_driver(device_driver);