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