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,
 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         BBbVT3253Init(priv);
 360
 361         if (priv->bUpdateBBVGA) {
 362                 priv->byBBVGACurrent = priv->abyBBVGA[0];
 363                 priv->byBBVGANew = priv->byBBVGACurrent;
 364                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
 365         }
 366
 367         BBvSetRxAntennaMode(priv, priv->byRxAntennaMode);
 368         BBvSetTxAntennaMode(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) + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) + priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) + priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 446                                       &priv->pool_dma, GFP_ATOMIC);
 447         if (!vir_pool) {
 448                 dev_err(&priv->pcid->dev, "allocate desc dma memory failed\n");
 449                 return false;
 450         }
 451
 452         priv->aRD0Ring = vir_pool;
 453         priv->aRD1Ring = vir_pool +
 454                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 455
 456         priv->rd0_pool_dma = priv->pool_dma;
 457         priv->rd1_pool_dma = priv->rd0_pool_dma +
 458                 priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);
 459
 460         priv->tx0_bufs = dma_alloc_coherent(&priv->pcid->dev,
 461                                             priv->opts.tx_descs[0] * PKT_BUF_SZ + priv->opts.tx_descs[1] * PKT_BUF_SZ + CB_BEACON_BUF_SIZE + CB_MAX_BUF_SIZE,
 462                                             &priv->tx_bufs_dma0, GFP_ATOMIC);
 463         if (!priv->tx0_bufs) {
 464                 dev_err(&priv->pcid->dev, "allocate buf dma memory failed\n");
 465
 466                 dma_free_coherent(&priv->pcid->dev,
 467                                   priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 468                                   priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 469                                   priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 470                                   priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 471                                   vir_pool, priv->pool_dma);
 472                 return false;
 473         }
 474
 475         priv->td0_pool_dma = priv->rd1_pool_dma +
 476                 priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);
 477
 478         priv->td1_pool_dma = priv->td0_pool_dma +
 479                 priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);
 480
 481         /* vir_pool: pvoid type */
 482         priv->apTD0Rings = vir_pool
 483                 + priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
 484                 + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);
 485
 486         priv->apTD1Rings = vir_pool
 487                 + priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
 488                 + priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc)
 489                 + priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);
 490
 491         priv->tx1_bufs = priv->tx0_bufs +
 492                 priv->opts.tx_descs[0] * PKT_BUF_SZ;
 493
 494         priv->tx_beacon_bufs = priv->tx1_bufs +
 495                 priv->opts.tx_descs[1] * PKT_BUF_SZ;
 496
 497         priv->pbyTmpBuff = priv->tx_beacon_bufs +
 498                 CB_BEACON_BUF_SIZE;
 499
 500         priv->tx_bufs_dma1 = priv->tx_bufs_dma0 +
 501                 priv->opts.tx_descs[0] * PKT_BUF_SZ;
 502
 503         priv->tx_beacon_dma = priv->tx_bufs_dma1 +
 504                 priv->opts.tx_descs[1] * PKT_BUF_SZ;
 505
 506         return true;
 507 }
 508
 509 static void device_free_rings(struct vnt_private *priv)
 510 {
 511         dma_free_coherent(&priv->pcid->dev,
 512                           priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
 513                           priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
 514                           priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
 515                           priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
 516                           priv->aRD0Ring, priv->pool_dma);
 517
 518         if (priv->tx0_bufs)
 519                 dma_free_coherent(&priv->pcid->dev,
 520                                   priv->opts.tx_descs[0] * PKT_BUF_SZ +
 521                                   priv->opts.tx_descs[1] * PKT_BUF_SZ +
 522                                   CB_BEACON_BUF_SIZE +
 523                                   CB_MAX_BUF_SIZE,
 524                                   priv->tx0_bufs, priv->tx_bufs_dma0);
 525 }
 526
 527 static int device_init_rd0_ring(struct vnt_private *priv)
 528 {
 529         int i;
 530         dma_addr_t      curr = priv->rd0_pool_dma;
 531         struct vnt_rx_desc *desc;
 532         int ret;
 533
 534         /* Init the RD0 ring entries */
 535         for (i = 0; i < priv->opts.rx_descs0;
 536              i ++, curr += sizeof(struct vnt_rx_desc)) {
 537                 desc = &priv->aRD0Ring[i];
 538                 desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_KERNEL);
 539                 if (!desc->rd_info) {
 540                         ret = -ENOMEM;
 541                         goto err_free_desc;
 542                 }
 543
 544                 if (!device_alloc_rx_buf(priv, desc)) {
 545                         dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");
 546                         ret = -ENOMEM;
 547                         goto err_free_rd;
 548                 }
 549
 550                 desc->next = &priv->aRD0Ring[(i + 1) % priv->opts.rx_descs0];
 551                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 552         }
 553
 554         if (i > 0)
 555                 priv->aRD0Ring[i-1].next_desc = cpu_to_le32(priv->rd0_pool_dma);
 556         priv->pCurrRD[0] = &priv->aRD0Ring[0];
 557
 558         return 0;
 559
 560 err_free_rd:
 561         kfree(desc->rd_info);
 562
 563 err_free_desc:
 564         while (--i) {
 565                 desc = &priv->aRD0Ring[i];
 566                 device_free_rx_buf(priv, desc);
 567                 kfree(desc->rd_info);
 568         }
 569
 570         return ret;
 571 }
 572
 573 static int device_init_rd1_ring(struct vnt_private *priv)
 574 {
 575         int i;
 576         dma_addr_t      curr = priv->rd1_pool_dma;
 577         struct vnt_rx_desc *desc;
 578         int ret;
 579
 580         /* Init the RD1 ring entries */
 581         for (i = 0; i < priv->opts.rx_descs1;
 582              i ++, curr += sizeof(struct vnt_rx_desc)) {
 583                 desc = &priv->aRD1Ring[i];
 584                 desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_KERNEL);
 585                 if (!desc->rd_info) {
 586                         ret = -ENOMEM;
 587                         goto err_free_desc;
 588                 }
 589
 590                 if (!device_alloc_rx_buf(priv, desc)) {
 591                         dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");
 592                         ret = -ENOMEM;
 593                         goto err_free_rd;
 594                 }
 595
 596                 desc->next = &priv->aRD1Ring[(i+1) % priv->opts.rx_descs1];
 597                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 598         }
 599
 600         if (i > 0)
 601                 priv->aRD1Ring[i-1].next_desc = cpu_to_le32(priv->rd1_pool_dma);
 602         priv->pCurrRD[1] = &priv->aRD1Ring[0];
 603
 604         return 0;
 605
 606 err_free_rd:
 607         kfree(desc->rd_info);
 608
 609 err_free_desc:
 610         while (--i) {
 611                 desc = &priv->aRD1Ring[i];
 612                 device_free_rx_buf(priv, desc);
 613                 kfree(desc->rd_info);
 614         }
 615
 616         return ret;
 617 }
 618
 619 static void device_free_rd0_ring(struct vnt_private *priv)
 620 {
 621         int i;
 622
 623         for (i = 0; i < priv->opts.rx_descs0; i++) {
 624                 struct vnt_rx_desc *desc = &priv->aRD0Ring[i];
 625
 626                 device_free_rx_buf(priv, desc);
 627                 kfree(desc->rd_info);
 628         }
 629 }
 630
 631 static void device_free_rd1_ring(struct vnt_private *priv)
 632 {
 633         int i;
 634
 635         for (i = 0; i < priv->opts.rx_descs1; i++) {
 636                 struct vnt_rx_desc *desc = &priv->aRD1Ring[i];
 637
 638                 device_free_rx_buf(priv, desc);
 639                 kfree(desc->rd_info);
 640         }
 641 }
 642
 643 static int device_init_td0_ring(struct vnt_private *priv)
 644 {
 645         int i;
 646         dma_addr_t  curr;
 647         struct vnt_tx_desc *desc;
 648         int ret;
 649
 650         curr = priv->td0_pool_dma;
 651         for (i = 0; i < priv->opts.tx_descs[0];
 652              i++, curr += sizeof(struct vnt_tx_desc)) {
 653                 desc = &priv->apTD0Rings[i];
 654                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_KERNEL);
 655                 if (!desc->td_info) {
 656                         ret = -ENOMEM;
 657                         goto err_free_desc;
 658                 }
 659
 660                 desc->td_info->buf = priv->tx0_bufs + i * PKT_BUF_SZ;
 661                 desc->td_info->buf_dma = priv->tx_bufs_dma0 + i * PKT_BUF_SZ;
 662
 663                 desc->next = &(priv->apTD0Rings[(i + 1) % priv->opts.tx_descs[0]]);
 664                 desc->next_desc = cpu_to_le32(curr +
 665                                               sizeof(struct vnt_tx_desc));
 666         }
 667
 668         if (i > 0)
 669                 priv->apTD0Rings[i - 1].next_desc = cpu_to_le32(priv->td0_pool_dma);
 670         priv->apTailTD[0] = priv->apCurrTD[0] = &priv->apTD0Rings[0];
 671
 672         return 0;
 673
 674 err_free_desc:
 675         while (--i) {
 676                 desc = &priv->apTD0Rings[i];
 677                 kfree(desc->td_info);
 678         }
 679
 680         return ret;
 681 }
 682
 683 static int device_init_td1_ring(struct vnt_private *priv)
 684 {
 685         int i;
 686         dma_addr_t  curr;
 687         struct vnt_tx_desc *desc;
 688         int ret;
 689
 690         /* Init the TD ring entries */
 691         curr = priv->td1_pool_dma;
 692         for (i = 0; i < priv->opts.tx_descs[1];
 693              i++, curr += sizeof(struct vnt_tx_desc)) {
 694                 desc = &priv->apTD1Rings[i];
 695                 desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_KERNEL);
 696                 if (!desc->td_info) {
 697                         ret = -ENOMEM;
 698                         goto err_free_desc;
 699                 }
 700
 701                 desc->td_info->buf = priv->tx1_bufs + i * PKT_BUF_SZ;
 702                 desc->td_info->buf_dma = priv->tx_bufs_dma1 + i * PKT_BUF_SZ;
 703
 704                 desc->next = &(priv->apTD1Rings[(i + 1) % priv->opts.tx_descs[1]]);
 705                 desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 706         }
 707
 708         if (i > 0)
 709                 priv->apTD1Rings[i - 1].next_desc = cpu_to_le32(priv->td1_pool_dma);
 710         priv->apTailTD[1] = priv->apCurrTD[1] = &priv->apTD1Rings[0];
 711
 712         return 0;
 713
 714 err_free_desc:
 715         while (--i) {
 716                 desc = &priv->apTD1Rings[i];
 717                 kfree(desc->td_info);
 718         }
 719
 720         return ret;
 721 }
 722
 723 static void device_free_td0_ring(struct vnt_private *priv)
 724 {
 725         int i;
 726
 727         for (i = 0; i < priv->opts.tx_descs[0]; i++) {
 728                 struct vnt_tx_desc *desc = &priv->apTD0Rings[i];
 729                 struct vnt_td_info *td_info = desc->td_info;
 730
 731                 dev_kfree_skb(td_info->skb);
 732                 kfree(desc->td_info);
 733         }
 734 }
 735
 736 static void device_free_td1_ring(struct vnt_private *priv)
 737 {
 738         int i;
 739
 740         for (i = 0; i < priv->opts.tx_descs[1]; i++) {
 741                 struct vnt_tx_desc *desc = &priv->apTD1Rings[i];
 742                 struct vnt_td_info *td_info = desc->td_info;
 743
 744                 dev_kfree_skb(td_info->skb);
 745                 kfree(desc->td_info);
 746         }
 747 }
 748
 749 /*-----------------------------------------------------------------*/
 750
 751 static int device_rx_srv(struct vnt_private *priv, unsigned int idx)
 752 {
 753         struct vnt_rx_desc *rd;
 754         int works = 0;
 755
 756         for (rd = priv->pCurrRD[idx];
 757              rd->rd0.owner == OWNED_BY_HOST;
 758              rd = rd->next) {
 759                 if (works++ > 15)
 760                         break;
 761
 762                 if (!rd->rd_info->skb)
 763                         break;
 764
 765                 if (vnt_receive_frame(priv, rd)) {
 766                         if (!device_alloc_rx_buf(priv, rd)) {
 767                                 dev_err(&priv->pcid->dev,
 768                                         "can not allocate rx buf\n");
 769                                 break;
 770                         }
 771                 }
 772                 rd->rd0.owner = OWNED_BY_NIC;
 773         }
 774
 775         priv->pCurrRD[idx] = rd;
 776
 777         return works;
 778 }
 779
 780 static bool device_alloc_rx_buf(struct vnt_private *priv,
 781                                 struct vnt_rx_desc *rd)
 782 {
 783         struct vnt_rd_info *rd_info = rd->rd_info;
 784
 785         rd_info->skb = dev_alloc_skb((int)priv->rx_buf_sz);
 786         if (!rd_info->skb)
 787                 return false;
 788
 789         rd_info->skb_dma =
 790                 dma_map_single(&priv->pcid->dev,
 791                                skb_put(rd_info->skb, skb_tailroom(rd_info->skb)),
 792                                priv->rx_buf_sz, DMA_FROM_DEVICE);
 793         if (dma_mapping_error(&priv->pcid->dev, rd_info->skb_dma)) {
 794                 dev_kfree_skb(rd_info->skb);
 795                 rd_info->skb = NULL;
 796                 return false;
 797         }
 798
 799         *((unsigned int *)&rd->rd0) = 0; /* FIX cast */
 800
 801         rd->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
 802         rd->rd0.owner = OWNED_BY_NIC;
 803         rd->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
 804         rd->buff_addr = cpu_to_le32(rd_info->skb_dma);
 805
 806         return true;
 807 }
 808
 809 static void device_free_rx_buf(struct vnt_private *priv,
 810                                struct vnt_rx_desc *rd)
 811 {
 812         struct vnt_rd_info *rd_info = rd->rd_info;
 813
 814         dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
 815                          priv->rx_buf_sz, DMA_FROM_DEVICE);
 816         dev_kfree_skb(rd_info->skb);
 817 }
 818
 819 static const u8 fallback_rate0[5][5] = {
 820         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 821         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 822         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 823         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 824         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 825 };
 826
 827 static const u8 fallback_rate1[5][5] = {
 828         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 829         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 830         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 831         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 832         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 833 };
 834
 835 static int vnt_int_report_rate(struct vnt_private *priv,
 836                                struct vnt_td_info *context, u8 tsr0, u8 tsr1)
 837 {
 838         struct vnt_tx_fifo_head *fifo_head;
 839         struct ieee80211_tx_info *info;
 840         struct ieee80211_rate *rate;
 841         u16 fb_option;
 842         u8 tx_retry = (tsr0 & TSR0_NCR);
 843         s8 idx;
 844
 845         if (!context)
 846                 return -ENOMEM;
 847
 848         if (!context->skb)
 849                 return -EINVAL;
 850
 851         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 852         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 853                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 854
 855         info = IEEE80211_SKB_CB(context->skb);
 856         idx = info->control.rates[0].idx;
 857
 858         if (fb_option && !(tsr1 & TSR1_TERR)) {
 859                 u8 tx_rate;
 860                 u8 retry = tx_retry;
 861
 862                 rate = ieee80211_get_tx_rate(priv->hw, info);
 863                 tx_rate = rate->hw_value - RATE_18M;
 864
 865                 if (retry > 4)
 866                         retry = 4;
 867
 868                 if (fb_option & FIFOCTL_AUTO_FB_0)
 869                         tx_rate = fallback_rate0[tx_rate][retry];
 870                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 871                         tx_rate = fallback_rate1[tx_rate][retry];
 872
 873                 if (info->band == NL80211_BAND_5GHZ)
 874                         idx = tx_rate - RATE_6M;
 875                 else
 876                         idx = tx_rate;
 877         }
 878
 879         ieee80211_tx_info_clear_status(info);
 880
 881         info->status.rates[0].count = tx_retry;
 882
 883         if (!(tsr1 & TSR1_TERR)) {
 884                 info->status.rates[0].idx = idx;
 885
 886                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 887                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 888                 else
 889                         info->flags |= IEEE80211_TX_STAT_ACK;
 890         }
 891
 892         return 0;
 893 }
 894
 895 static int device_tx_srv(struct vnt_private *priv, unsigned int idx)
 896 {
 897         struct vnt_tx_desc *desc;
 898         int                      works = 0;
 899         unsigned char byTsr0;
 900         unsigned char byTsr1;
 901
 902         for (desc = priv->apTailTD[idx]; priv->iTDUsed[idx] > 0; desc = desc->next) {
 903                 if (desc->td0.owner == OWNED_BY_NIC)
 904                         break;
 905                 if (works++ > 15)
 906                         break;
 907
 908                 byTsr0 = desc->td0.tsr0;
 909                 byTsr1 = desc->td0.tsr1;
 910
 911                 /* Only the status of first TD in the chain is correct */
 912                 if (desc->td1.tcr & TCR_STP) {
 913                         if ((desc->td_info->flags & TD_FLAGS_NETIF_SKB) != 0) {
 914                                 if (!(byTsr1 & TSR1_TERR)) {
 915                                         if (byTsr0 != 0) {
 916                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 917                                                          (int)idx, byTsr1,
 918                                                          byTsr0);
 919                                         }
 920                                 } else {
 921                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 922                                                  (int)idx, byTsr1, byTsr0);
 923                                 }
 924                         }
 925
 926                         if (byTsr1 & TSR1_TERR) {
 927                                 if ((desc->td_info->flags & TD_FLAGS_PRIV_SKB) != 0) {
 928                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 929                                                  (int)idx, byTsr1, byTsr0);
 930                                 }
 931                         }
 932
 933                         vnt_int_report_rate(priv, desc->td_info, byTsr0, byTsr1);
 934
 935                         device_free_tx_buf(priv, desc);
 936                         priv->iTDUsed[idx]--;
 937                 }
 938         }
 939
 940         priv->apTailTD[idx] = desc;
 941
 942         return works;
 943 }
 944
 945 static void device_error(struct vnt_private *priv, unsigned short status)
 946 {
 947         if (status & ISR_FETALERR) {
 948                 dev_err(&priv->pcid->dev, "Hardware fatal error\n");
 949
 950                 MACbShutdown(priv);
 951                 return;
 952         }
 953 }
 954
 955 static void device_free_tx_buf(struct vnt_private *priv,
 956                                struct vnt_tx_desc *desc)
 957 {
 958         struct vnt_td_info *td_info = desc->td_info;
 959         struct sk_buff *skb = td_info->skb;
 960
 961         if (skb)
 962                 ieee80211_tx_status_irqsafe(priv->hw, skb);
 963
 964         td_info->skb = NULL;
 965         td_info->flags = 0;
 966 }
 967
 968 static void vnt_check_bb_vga(struct vnt_private *priv)
 969 {
 970         long dbm;
 971         int i;
 972
 973         if (!priv->bUpdateBBVGA)
 974                 return;
 975
 976         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
 977                 return;
 978
 979         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
 980                 return;
 981
 982         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
 983
 984         for (i = 0; i < BB_VGA_LEVEL; i++) {
 985                 if (dbm < priv->ldBmThreshold[i]) {
 986                         priv->byBBVGANew = priv->abyBBVGA[i];
 987                         break;
 988                 }
 989         }
 990
 991         if (priv->byBBVGANew == priv->byBBVGACurrent) {
 992                 priv->uBBVGADiffCount = 1;
 993                 return;
 994         }
 995
 996         priv->uBBVGADiffCount++;
 997
 998         if (priv->uBBVGADiffCount == 1) {
 999                 /* first VGA diff gain */
1000                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1001
1002                 dev_dbg(&priv->pcid->dev,
1003                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1004                         (int)dbm, priv->byBBVGANew,
1005                         priv->byBBVGACurrent,
1006                         (int)priv->uBBVGADiffCount);
1007         }
1008
1009         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1010                 dev_dbg(&priv->pcid->dev,
1011                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1012                         (int)dbm, priv->byBBVGANew,
1013                         priv->byBBVGACurrent,
1014                         (int)priv->uBBVGADiffCount);
1015
1016                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1017         }
1018 }
1019
1020 static void vnt_interrupt_process(struct vnt_private *priv)
1021 {
1022         struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
1023         int             max_count = 0;
1024         u32 mib_counter;
1025         u32 isr;
1026         unsigned long flags;
1027
1028         MACvReadISR(priv->PortOffset, &isr);
1029
1030         if (isr == 0)
1031                 return;
1032
1033         if (isr == 0xffffffff) {
1034                 pr_debug("isr = 0xffff\n");
1035                 return;
1036         }
1037
1038         spin_lock_irqsave(&priv->lock, flags);
1039
1040         /* Read low level stats */
1041         MACvReadMIBCounter(priv->PortOffset, &mib_counter);
1042
1043         low_stats->dot11RTSSuccessCount += mib_counter & 0xff;
1044         low_stats->dot11RTSFailureCount += (mib_counter >> 8) & 0xff;
1045         low_stats->dot11ACKFailureCount += (mib_counter >> 16) & 0xff;
1046         low_stats->dot11FCSErrorCount += (mib_counter >> 24) & 0xff;
1047
1048         /*
1049          * TBD....
1050          * Must do this after doing rx/tx, cause ISR bit is slow
1051          * than RD/TD write back
1052          * update ISR counter
1053          */
1054         while (isr && priv->vif) {
1055                 MACvWriteISR(priv->PortOffset, isr);
1056
1057                 if (isr & ISR_FETALERR) {
1058                         pr_debug(" ISR_FETALERR\n");
1059                         VNSvOutPortB(priv->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1060                         VNSvOutPortW(priv->PortOffset +
1061                                      MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1062                         device_error(priv, isr);
1063                 }
1064
1065                 if (isr & ISR_TBTT) {
1066                         if (priv->op_mode != NL80211_IFTYPE_ADHOC)
1067                                 vnt_check_bb_vga(priv);
1068
1069                         priv->bBeaconSent = false;
1070                         if (priv->bEnablePSMode)
1071                                 PSbIsNextTBTTWakeUp((void *)priv);
1072
1073                         if ((priv->op_mode == NL80211_IFTYPE_AP ||
1074                             priv->op_mode == NL80211_IFTYPE_ADHOC) &&
1075                             priv->vif->bss_conf.enable_beacon) {
1076                                 MACvOneShotTimer1MicroSec(priv,
1077                                                           (priv->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1078                         }
1079
1080                         /* TODO: adhoc PS mode */
1081                 }
1082
1083                 if (isr & ISR_BNTX) {
1084                         if (priv->op_mode == NL80211_IFTYPE_ADHOC) {
1085                                 priv->bIsBeaconBufReadySet = false;
1086                                 priv->cbBeaconBufReadySetCnt = 0;
1087                         }
1088
1089                         priv->bBeaconSent = true;
1090                 }
1091
1092                 if (isr & ISR_RXDMA0)
1093                         max_count += device_rx_srv(priv, TYPE_RXDMA0);
1094
1095                 if (isr & ISR_RXDMA1)
1096                         max_count += device_rx_srv(priv, TYPE_RXDMA1);
1097
1098                 if (isr & ISR_TXDMA0)
1099                         max_count += device_tx_srv(priv, TYPE_TXDMA0);
1100
1101                 if (isr & ISR_AC0DMA)
1102                         max_count += device_tx_srv(priv, TYPE_AC0DMA);
1103
1104                 if (isr & ISR_SOFTTIMER1) {
1105                         if (priv->vif->bss_conf.enable_beacon)
1106                                 vnt_beacon_make(priv, priv->vif);
1107                 }
1108
1109                 /* If both buffers available wake the queue */
1110                 if (AVAIL_TD(priv, TYPE_TXDMA0) &&
1111                     AVAIL_TD(priv, TYPE_AC0DMA) &&
1112                     ieee80211_queue_stopped(priv->hw, 0))
1113                         ieee80211_wake_queues(priv->hw);
1114
1115                 MACvReadISR(priv->PortOffset, &isr);
1116
1117                 MACvReceive0(priv->PortOffset);
1118                 MACvReceive1(priv->PortOffset);
1119
1120                 if (max_count > priv->opts.int_works)
1121                         break;
1122         }
1123
1124         spin_unlock_irqrestore(&priv->lock, flags);
1125 }
1126
1127 static void vnt_interrupt_work(struct work_struct *work)
1128 {
1129         struct vnt_private *priv =
1130                 container_of(work, struct vnt_private, interrupt_work);
1131
1132         if (priv->vif)
1133                 vnt_interrupt_process(priv);
1134
1135         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1136 }
1137
1138 static irqreturn_t vnt_interrupt(int irq,  void *arg)
1139 {
1140         struct vnt_private *priv = arg;
1141
1142         schedule_work(&priv->interrupt_work);
1143
1144         MACvIntDisable(priv->PortOffset);
1145
1146         return IRQ_HANDLED;
1147 }
1148
1149 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1150 {
1151         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1152         struct vnt_tx_desc *head_td;
1153         u32 dma_idx;
1154         unsigned long flags;
1155
1156         spin_lock_irqsave(&priv->lock, flags);
1157
1158         if (ieee80211_is_data(hdr->frame_control))
1159                 dma_idx = TYPE_AC0DMA;
1160         else
1161                 dma_idx = TYPE_TXDMA0;
1162
1163         if (AVAIL_TD(priv, dma_idx) < 1) {
1164                 spin_unlock_irqrestore(&priv->lock, flags);
1165                 ieee80211_stop_queues(priv->hw);
1166                 return -ENOMEM;
1167         }
1168
1169         head_td = priv->apCurrTD[dma_idx];
1170
1171         head_td->td1.tcr = 0;
1172
1173         head_td->td_info->skb = skb;
1174
1175         if (dma_idx == TYPE_AC0DMA)
1176                 head_td->td_info->flags = TD_FLAGS_NETIF_SKB;
1177
1178         priv->apCurrTD[dma_idx] = head_td->next;
1179
1180         spin_unlock_irqrestore(&priv->lock, flags);
1181
1182         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1183
1184         spin_lock_irqsave(&priv->lock, flags);
1185
1186         priv->bPWBitOn = false;
1187
1188         /* Set TSR1 & ReqCount in TxDescHead */
1189         head_td->td1.tcr |= (TCR_STP | TCR_EDP | EDMSDU);
1190         head_td->td1.req_count = cpu_to_le16(head_td->td_info->req_count);
1191
1192         head_td->buff_addr = cpu_to_le32(head_td->td_info->buf_dma);
1193
1194         /* Poll Transmit the adapter */
1195         wmb();
1196         head_td->td0.owner = OWNED_BY_NIC;
1197         wmb(); /* second memory barrier */
1198
1199         if (head_td->td_info->flags & TD_FLAGS_NETIF_SKB)
1200                 MACvTransmitAC0(priv->PortOffset);
1201         else
1202                 MACvTransmit0(priv->PortOffset);
1203
1204         priv->iTDUsed[dma_idx]++;
1205
1206         spin_unlock_irqrestore(&priv->lock, flags);
1207
1208         return 0;
1209 }
1210
1211 static void vnt_tx_80211(struct ieee80211_hw *hw,
1212                          struct ieee80211_tx_control *control,
1213                          struct sk_buff *skb)
1214 {
1215         struct vnt_private *priv = hw->priv;
1216
1217         if (vnt_tx_packet(priv, skb))
1218                 ieee80211_free_txskb(hw, skb);
1219 }
1220
1221 static int vnt_start(struct ieee80211_hw *hw)
1222 {
1223         struct vnt_private *priv = hw->priv;
1224         int ret;
1225
1226         priv->rx_buf_sz = PKT_BUF_SZ;
1227         if (!device_init_rings(priv))
1228                 return -ENOMEM;
1229
1230         ret = request_irq(priv->pcid->irq, vnt_interrupt,
1231                           IRQF_SHARED, "vt6655", priv);
1232         if (ret) {
1233                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1234                 goto err_free_rings;
1235         }
1236
1237         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1238         ret = device_init_rd0_ring(priv);
1239         if (ret)
1240                 goto err_free_irq;
1241         ret = device_init_rd1_ring(priv);
1242         if (ret)
1243                 goto err_free_rd0_ring;
1244         ret = device_init_td0_ring(priv);
1245         if (ret)
1246                 goto err_free_rd1_ring;
1247         ret = device_init_td1_ring(priv);
1248         if (ret)
1249                 goto err_free_td0_ring;
1250
1251         device_init_registers(priv);
1252
1253         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1254         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1255
1256         ieee80211_wake_queues(hw);
1257
1258         return 0;
1259
1260 err_free_td0_ring:
1261         device_free_td0_ring(priv);
1262 err_free_rd1_ring:
1263         device_free_rd1_ring(priv);
1264 err_free_rd0_ring:
1265         device_free_rd0_ring(priv);
1266 err_free_irq:
1267         free_irq(priv->pcid->irq, priv);
1268 err_free_rings:
1269         device_free_rings(priv);
1270         return ret;
1271 }
1272
1273 static void vnt_stop(struct ieee80211_hw *hw)
1274 {
1275         struct vnt_private *priv = hw->priv;
1276
1277         ieee80211_stop_queues(hw);
1278
1279         cancel_work_sync(&priv->interrupt_work);
1280
1281         MACbShutdown(priv);
1282         MACbSoftwareReset(priv);
1283         CARDbRadioPowerOff(priv);
1284
1285         device_free_td0_ring(priv);
1286         device_free_td1_ring(priv);
1287         device_free_rd0_ring(priv);
1288         device_free_rd1_ring(priv);
1289         device_free_rings(priv);
1290
1291         free_irq(priv->pcid->irq, priv);
1292 }
1293
1294 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1295 {
1296         struct vnt_private *priv = hw->priv;
1297
1298         priv->vif = vif;
1299
1300         switch (vif->type) {
1301         case NL80211_IFTYPE_STATION:
1302                 break;
1303         case NL80211_IFTYPE_ADHOC:
1304                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1305
1306                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1307
1308                 break;
1309         case NL80211_IFTYPE_AP:
1310                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1311
1312                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1313
1314                 break;
1315         default:
1316                 return -EOPNOTSUPP;
1317         }
1318
1319         priv->op_mode = vif->type;
1320
1321         return 0;
1322 }
1323
1324 static void vnt_remove_interface(struct ieee80211_hw *hw,
1325                                  struct ieee80211_vif *vif)
1326 {
1327         struct vnt_private *priv = hw->priv;
1328
1329         switch (vif->type) {
1330         case NL80211_IFTYPE_STATION:
1331                 break;
1332         case NL80211_IFTYPE_ADHOC:
1333                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1334                 MACvRegBitsOff(priv->PortOffset,
1335                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1336                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1337                 break;
1338         case NL80211_IFTYPE_AP:
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_AP);
1343                 break;
1344         default:
1345                 break;
1346         }
1347
1348         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1349 }
1350
1351 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1352 {
1353         struct vnt_private *priv = hw->priv;
1354         struct ieee80211_conf *conf = &hw->conf;
1355         u8 bb_type;
1356
1357         if (changed & IEEE80211_CONF_CHANGE_PS) {
1358                 if (conf->flags & IEEE80211_CONF_PS)
1359                         PSvEnablePowerSaving(priv, conf->listen_interval);
1360                 else
1361                         PSvDisablePowerSaving(priv);
1362         }
1363
1364         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1365             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1366                 set_channel(priv, conf->chandef.chan);
1367
1368                 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
1369                         bb_type = BB_TYPE_11A;
1370                 else
1371                         bb_type = BB_TYPE_11G;
1372
1373                 if (priv->byBBType != bb_type) {
1374                         priv->byBBType = bb_type;
1375
1376                         CARDbSetPhyParameter(priv, priv->byBBType);
1377                 }
1378         }
1379
1380         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1381                 if (priv->byBBType == BB_TYPE_11B)
1382                         priv->wCurrentRate = RATE_1M;
1383                 else
1384                         priv->wCurrentRate = RATE_54M;
1385
1386                 RFbSetPower(priv, priv->wCurrentRate,
1387                             conf->chandef.chan->hw_value);
1388         }
1389
1390         return 0;
1391 }
1392
1393 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1394                                  struct ieee80211_vif *vif,
1395                                  struct ieee80211_bss_conf *conf, u32 changed)
1396 {
1397         struct vnt_private *priv = hw->priv;
1398
1399         priv->current_aid = conf->aid;
1400
1401         if (changed & BSS_CHANGED_BSSID && conf->bssid) {
1402                 unsigned long flags;
1403
1404                 spin_lock_irqsave(&priv->lock, flags);
1405
1406                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1407
1408                 spin_unlock_irqrestore(&priv->lock, flags);
1409         }
1410
1411         if (changed & BSS_CHANGED_BASIC_RATES) {
1412                 priv->basic_rates = conf->basic_rates;
1413
1414                 CARDvUpdateBasicTopRate(priv);
1415
1416                 dev_dbg(&priv->pcid->dev,
1417                         "basic rates %x\n", conf->basic_rates);
1418         }
1419
1420         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1421                 if (conf->use_short_preamble) {
1422                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1423                         priv->byPreambleType = true;
1424                 } else {
1425                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1426                         priv->byPreambleType = false;
1427                 }
1428         }
1429
1430         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1431                 if (conf->use_cts_prot)
1432                         MACvEnableProtectMD(priv->PortOffset);
1433                 else
1434                         MACvDisableProtectMD(priv->PortOffset);
1435         }
1436
1437         if (changed & BSS_CHANGED_ERP_SLOT) {
1438                 if (conf->use_short_slot)
1439                         priv->bShortSlotTime = true;
1440                 else
1441                         priv->bShortSlotTime = false;
1442
1443                 CARDbSetPhyParameter(priv, priv->byBBType);
1444                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1445         }
1446
1447         if (changed & BSS_CHANGED_TXPOWER)
1448                 RFbSetPower(priv, priv->wCurrentRate,
1449                             conf->chandef.chan->hw_value);
1450
1451         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1452                 dev_dbg(&priv->pcid->dev,
1453                         "Beacon enable %d\n", conf->enable_beacon);
1454
1455                 if (conf->enable_beacon) {
1456                         vnt_beacon_enable(priv, vif, conf);
1457
1458                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1459                                       TCR_AUTOBCNTX);
1460                 } else {
1461                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1462                                        TCR_AUTOBCNTX);
1463                 }
1464         }
1465
1466         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
1467             priv->op_mode != NL80211_IFTYPE_AP) {
1468                 if (conf->assoc && conf->beacon_rate) {
1469                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1470                                        conf->sync_tsf);
1471
1472                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1473
1474                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1475                 } else {
1476                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1477                                      TFTCTL_TSFCNTRST);
1478                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1479                                      TFTCTL_TSFCNTREN);
1480                 }
1481         }
1482 }
1483
1484 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1485                                  struct netdev_hw_addr_list *mc_list)
1486 {
1487         struct vnt_private *priv = hw->priv;
1488         struct netdev_hw_addr *ha;
1489         u64 mc_filter = 0;
1490         u32 bit_nr = 0;
1491
1492         netdev_hw_addr_list_for_each(ha, mc_list) {
1493                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1494
1495                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1496         }
1497
1498         priv->mc_list_count = mc_list->count;
1499
1500         return mc_filter;
1501 }
1502
1503 static void vnt_configure(struct ieee80211_hw *hw,
1504                           unsigned int changed_flags,
1505                           unsigned int *total_flags, u64 multicast)
1506 {
1507         struct vnt_private *priv = hw->priv;
1508         u8 rx_mode = 0;
1509
1510         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
1511
1512         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1513
1514         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1515
1516         if (changed_flags & FIF_ALLMULTI) {
1517                 if (*total_flags & FIF_ALLMULTI) {
1518                         unsigned long flags;
1519
1520                         spin_lock_irqsave(&priv->lock, flags);
1521
1522                         if (priv->mc_list_count > 2) {
1523                                 MACvSelectPage1(priv->PortOffset);
1524
1525                                 VNSvOutPortD(priv->PortOffset +
1526                                              MAC_REG_MAR0, 0xffffffff);
1527                                 VNSvOutPortD(priv->PortOffset +
1528                                             MAC_REG_MAR0 + 4, 0xffffffff);
1529
1530                                 MACvSelectPage0(priv->PortOffset);
1531                         } else {
1532                                 MACvSelectPage1(priv->PortOffset);
1533
1534                                 VNSvOutPortD(priv->PortOffset +
1535                                              MAC_REG_MAR0, (u32)multicast);
1536                                 VNSvOutPortD(priv->PortOffset +
1537                                              MAC_REG_MAR0 + 4,
1538                                              (u32)(multicast >> 32));
1539
1540                                 MACvSelectPage0(priv->PortOffset);
1541                         }
1542
1543                         spin_unlock_irqrestore(&priv->lock, flags);
1544
1545                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1546                 } else {
1547                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1548                 }
1549         }
1550
1551         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1552                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1553
1554                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1555                         rx_mode &= ~RCR_BSSID;
1556                 else
1557                         rx_mode |= RCR_BSSID;
1558         }
1559
1560         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1561
1562         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1563 }
1564
1565 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1566                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1567                        struct ieee80211_key_conf *key)
1568 {
1569         struct vnt_private *priv = hw->priv;
1570
1571         switch (cmd) {
1572         case SET_KEY:
1573                 if (vnt_set_keys(hw, sta, vif, key))
1574                         return -EOPNOTSUPP;
1575                 break;
1576         case DISABLE_KEY:
1577                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1578                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1579         default:
1580                 break;
1581         }
1582
1583         return 0;
1584 }
1585
1586 static int vnt_get_stats(struct ieee80211_hw *hw,
1587                          struct ieee80211_low_level_stats *stats)
1588 {
1589         struct vnt_private *priv = hw->priv;
1590
1591         memcpy(stats, &priv->low_stats, sizeof(*stats));
1592
1593         return 0;
1594 }
1595
1596 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1597 {
1598         struct vnt_private *priv = hw->priv;
1599         u64 tsf;
1600
1601         CARDbGetCurrentTSF(priv, &tsf);
1602
1603         return tsf;
1604 }
1605
1606 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1607                         u64 tsf)
1608 {
1609         struct vnt_private *priv = hw->priv;
1610
1611         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1612 }
1613
1614 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1615 {
1616         struct vnt_private *priv = hw->priv;
1617
1618         /* reset TSF counter */
1619         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1620 }
1621
1622 static const struct ieee80211_ops vnt_mac_ops = {
1623         .tx                     = vnt_tx_80211,
1624         .start                  = vnt_start,
1625         .stop                   = vnt_stop,
1626         .add_interface          = vnt_add_interface,
1627         .remove_interface       = vnt_remove_interface,
1628         .config                 = vnt_config,
1629         .bss_info_changed       = vnt_bss_info_changed,
1630         .prepare_multicast      = vnt_prepare_multicast,
1631         .configure_filter       = vnt_configure,
1632         .set_key                = vnt_set_key,
1633         .get_stats              = vnt_get_stats,
1634         .get_tsf                = vnt_get_tsf,
1635         .set_tsf                = vnt_set_tsf,
1636         .reset_tsf              = vnt_reset_tsf,
1637 };
1638
1639 static int vnt_init(struct vnt_private *priv)
1640 {
1641         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1642
1643         vnt_init_bands(priv);
1644
1645         if (ieee80211_register_hw(priv->hw))
1646                 return -ENODEV;
1647
1648         priv->mac_hw = true;
1649
1650         CARDbRadioPowerOff(priv);
1651
1652         return 0;
1653 }
1654
1655 static int
1656 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1657 {
1658         struct vnt_private *priv;
1659         struct ieee80211_hw *hw;
1660         struct wiphy *wiphy;
1661         int         rc;
1662
1663         dev_notice(&pcid->dev,
1664                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1665
1666         dev_notice(&pcid->dev,
1667                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1668
1669         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1670         if (!hw) {
1671                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1672                 return -ENOMEM;
1673         }
1674
1675         priv = hw->priv;
1676         priv->pcid = pcid;
1677
1678         spin_lock_init(&priv->lock);
1679
1680         priv->hw = hw;
1681
1682         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1683
1684         if (pci_enable_device(pcid)) {
1685                 device_free_info(priv);
1686                 return -ENODEV;
1687         }
1688
1689         dev_dbg(&pcid->dev,
1690                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1691
1692         pci_set_master(pcid);
1693
1694         priv->memaddr = pci_resource_start(pcid, 0);
1695         priv->ioaddr = pci_resource_start(pcid, 1);
1696         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1697                                    256);
1698         if (!priv->PortOffset) {
1699                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1700                 device_free_info(priv);
1701                 return -ENODEV;
1702         }
1703
1704         rc = pci_request_regions(pcid, DEVICE_NAME);
1705         if (rc) {
1706                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1707                 device_free_info(priv);
1708                 return -ENODEV;
1709         }
1710
1711         if (dma_set_mask(&pcid->dev, DMA_BIT_MASK(32))) {
1712                 dev_err(&pcid->dev, ": Failed to set dma 32 bit mask\n");
1713                 device_free_info(priv);
1714                 return -ENODEV;
1715         }
1716
1717         INIT_WORK(&priv->interrupt_work, vnt_interrupt_work);
1718
1719         /* do reset */
1720         if (!MACbSoftwareReset(priv)) {
1721                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1722                 device_free_info(priv);
1723                 return -ENODEV;
1724         }
1725         /* initial to reload eeprom */
1726         MACvInitialize(priv);
1727         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1728
1729         /* Get RFType */
1730         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1731         priv->byRFType &= RF_MASK;
1732
1733         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1734
1735         device_get_options(priv);
1736         device_set_options(priv);
1737
1738         wiphy = priv->hw->wiphy;
1739
1740         wiphy->frag_threshold = FRAG_THRESH_DEF;
1741         wiphy->rts_threshold = RTS_THRESH_DEF;
1742         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1743                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1744
1745         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1746         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1747         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1748         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1749         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1750
1751         priv->hw->max_signal = 100;
1752
1753         if (vnt_init(priv)) {
1754                 device_free_info(priv);
1755                 return -ENODEV;
1756         }
1757
1758         device_print_info(priv);
1759         pci_set_drvdata(pcid, priv);
1760
1761         return 0;
1762 }
1763
1764 /*------------------------------------------------------------------*/
1765
1766 #ifdef CONFIG_PM
1767 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1768 {
1769         struct vnt_private *priv = pci_get_drvdata(pcid);
1770         unsigned long flags;
1771
1772         spin_lock_irqsave(&priv->lock, flags);
1773
1774         pci_save_state(pcid);
1775
1776         MACbShutdown(priv);
1777
1778         pci_disable_device(pcid);
1779
1780         spin_unlock_irqrestore(&priv->lock, flags);
1781
1782         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1783
1784         return 0;
1785 }
1786
1787 static int vt6655_resume(struct pci_dev *pcid)
1788 {
1789         pci_set_power_state(pcid, PCI_D0);
1790         pci_enable_wake(pcid, PCI_D0, 0);
1791         pci_restore_state(pcid);
1792
1793         return 0;
1794 }
1795 #endif
1796
1797 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1798
1799 static struct pci_driver device_driver = {
1800         .name = DEVICE_NAME,
1801         .id_table = vt6655_pci_id_table,
1802         .probe = vt6655_probe,
1803         .remove = vt6655_remove,
1804 #ifdef CONFIG_PM
1805         .suspend = vt6655_suspend,
1806         .resume = vt6655_resume,
1807 #endif
1808 };
1809
1810 module_pci_driver(device_driver);