drivers/staging/vt6655/device_main.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: device_main.c
  20  *
  21  * Purpose: driver entry for initial, open, close, tx and rx.
  22  *
  23  * Author: Lyndon Chen
  24  *
  25  * Date: Jan 8, 2003
  26  *
  27  * Functions:
  28  *
  29  *   vt6655_probe - module initial (insmod) driver entry
  30  *   vt6655_remove - module remove entry
  31  *   vt6655_init_info - device structure resource allocation function
  32  *   device_free_info - device structure resource free function
  33  *   device_get_pci_info - get allocated pci io/mem resource
  34  *   device_print_info - print out resource
  35  *   device_rx_srv - rx service function
  36  *   device_alloc_rx_buf - rx buffer pre-allocated function
  37  *   device_free_tx_buf - free tx buffer function
  38  *   device_init_rd0_ring- initial rd dma0 ring
  39  *   device_init_rd1_ring- initial rd dma1 ring
  40  *   device_init_td0_ring- initial tx dma0 ring buffer
  41  *   device_init_td1_ring- initial tx dma1 ring buffer
  42  *   device_init_registers- initial MAC & BBP & RF internal registers.
  43  *   device_init_rings- initial tx/rx ring buffer
  44  *   device_free_rings- free all allocated ring buffer
  45  *   device_tx_srv- tx interrupt service function
  46  *
  47  * Revision History:
  48  */
  49 #undef __NO_VERSION__
  50
  51 #include <linux/file.h>
  52 #include "device.h"
  53 #include "card.h"
  54 #include "channel.h"
  55 #include "baseband.h"
  56 #include "mac.h"
  57 #include "power.h"
  58 #include "rxtx.h"
  59 #include "dpc.h"
  60 #include "rf.h"
  61 #include <linux/delay.h>
  62 #include <linux/kthread.h>
  63 #include <linux/slab.h>
  64
  65 /*---------------------  Static Definitions -------------------------*/
  66 /*
  67  * Define module options
  68  */
  69 MODULE_AUTHOR("VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>");
  70 MODULE_LICENSE("GPL");
  71 MODULE_DESCRIPTION("VIA Networking Solomon-A/B/G Wireless LAN Adapter Driver");
  72
  73 #define DEVICE_PARAM(N, D)
  74
  75 #define RX_DESC_MIN0     16
  76 #define RX_DESC_MAX0     128
  77 #define RX_DESC_DEF0     32
  78 DEVICE_PARAM(RxDescriptors0, "Number of receive descriptors0");
  79
  80 #define RX_DESC_MIN1     16
  81 #define RX_DESC_MAX1     128
  82 #define RX_DESC_DEF1     32
  83 DEVICE_PARAM(RxDescriptors1, "Number of receive descriptors1");
  84
  85 #define TX_DESC_MIN0     16
  86 #define TX_DESC_MAX0     128
  87 #define TX_DESC_DEF0     32
  88 DEVICE_PARAM(TxDescriptors0, "Number of transmit descriptors0");
  89
  90 #define TX_DESC_MIN1     16
  91 #define TX_DESC_MAX1     128
  92 #define TX_DESC_DEF1     64
  93 DEVICE_PARAM(TxDescriptors1, "Number of transmit descriptors1");
  94
  95 #define INT_WORKS_DEF   20
  96 #define INT_WORKS_MIN   10
  97 #define INT_WORKS_MAX   64
  98
  99 DEVICE_PARAM(int_works, "Number of packets per interrupt services");
 100
 101 #define RTS_THRESH_DEF     2347
 102
 103 #define FRAG_THRESH_DEF     2346
 104
 105 #define SHORT_RETRY_MIN     0
 106 #define SHORT_RETRY_MAX     31
 107 #define SHORT_RETRY_DEF     8
 108
 109 DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");
 110
 111 #define LONG_RETRY_MIN     0
 112 #define LONG_RETRY_MAX     15
 113 #define LONG_RETRY_DEF     4
 114
 115 DEVICE_PARAM(LongRetryLimit, "long frame retry limits");
 116
 117 /* BasebandType[] baseband type selected
 118    0: indicate 802.11a type
 119    1: indicate 802.11b type
 120    2: indicate 802.11g type
 121 */
 122 #define BBP_TYPE_MIN     0
 123 #define BBP_TYPE_MAX     2
 124 #define BBP_TYPE_DEF     2
 125
 126 DEVICE_PARAM(BasebandType, "baseband type");
 127
 128 /*
 129  * Static vars definitions
 130  */
 131 static CHIP_INFO chip_info_table[] = {
 132         { VT3253,       "VIA Networking Solomon-A/B/G Wireless LAN Adapter ",
 133           256, 1,     DEVICE_FLAGS_IP_ALIGN|DEVICE_FLAGS_TX_ALIGN },
 134         {0, NULL}
 135 };
 136
 137 static const struct pci_device_id vt6655_pci_id_table[] = {
 138         { PCI_VDEVICE(VIA, 0x3253), (kernel_ulong_t)chip_info_table},
 139         { 0, }
 140 };
 141
 142 /*---------------------  Static Functions  --------------------------*/
 143
 144 static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
 145 static void vt6655_init_info(struct pci_dev *pcid,
 146                              struct vnt_private **ppDevice, PCHIP_INFO);
 147 static void device_free_info(struct vnt_private *pDevice);
 148 static bool device_get_pci_info(struct vnt_private *, struct pci_dev *pcid);
 149 static void device_print_info(struct vnt_private *pDevice);
 150
 151 static void device_init_rd0_ring(struct vnt_private *pDevice);
 152 static void device_init_rd1_ring(struct vnt_private *pDevice);
 153 static void device_init_td0_ring(struct vnt_private *pDevice);
 154 static void device_init_td1_ring(struct vnt_private *pDevice);
 155
 156 static int  device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx);
 157 static int  device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx);
 158 static bool device_alloc_rx_buf(struct vnt_private *, struct vnt_rx_desc *);
 159 static void device_init_registers(struct vnt_private *pDevice);
 160 static void device_free_tx_buf(struct vnt_private *, struct vnt_tx_desc *);
 161 static void device_free_td0_ring(struct vnt_private *pDevice);
 162 static void device_free_td1_ring(struct vnt_private *pDevice);
 163 static void device_free_rd0_ring(struct vnt_private *pDevice);
 164 static void device_free_rd1_ring(struct vnt_private *pDevice);
 165 static void device_free_rings(struct vnt_private *pDevice);
 166
 167 /*---------------------  Export Variables  --------------------------*/
 168
 169 /*---------------------  Export Functions  --------------------------*/
 170
 171 static char *get_chip_name(int chip_id)
 172 {
 173         int i;
 174
 175         for (i = 0; chip_info_table[i].name != NULL; i++)
 176                 if (chip_info_table[i].chip_id == chip_id)
 177                         break;
 178         return chip_info_table[i].name;
 179 }
 180
 181 static void vt6655_remove(struct pci_dev *pcid)
 182 {
 183         struct vnt_private *pDevice = pci_get_drvdata(pcid);
 184
 185         if (pDevice == NULL)
 186                 return;
 187         device_free_info(pDevice);
 188 }
 189
 190 static void device_get_options(struct vnt_private *pDevice)
 191 {
 192         POPTIONS pOpts = &(pDevice->sOpts);
 193
 194         pOpts->nRxDescs0 = RX_DESC_DEF0;
 195         pOpts->nRxDescs1 = RX_DESC_DEF1;
 196         pOpts->nTxDescs[0] = TX_DESC_DEF0;
 197         pOpts->nTxDescs[1] = TX_DESC_DEF1;
 198         pOpts->int_works = INT_WORKS_DEF;
 199
 200         pOpts->short_retry = SHORT_RETRY_DEF;
 201         pOpts->long_retry = LONG_RETRY_DEF;
 202         pOpts->bbp_type = BBP_TYPE_DEF;
 203 }
 204
 205 static void
 206 device_set_options(struct vnt_private *pDevice)
 207 {
 208         pDevice->byShortRetryLimit = pDevice->sOpts.short_retry;
 209         pDevice->byLongRetryLimit = pDevice->sOpts.long_retry;
 210         pDevice->byBBType = pDevice->sOpts.bbp_type;
 211         pDevice->byPacketType = pDevice->byBBType;
 212         pDevice->byAutoFBCtrl = AUTO_FB_0;
 213         pDevice->bUpdateBBVGA = true;
 214         pDevice->byPreambleType = 0;
 215
 216         pr_debug(" byShortRetryLimit= %d\n", (int)pDevice->byShortRetryLimit);
 217         pr_debug(" byLongRetryLimit= %d\n", (int)pDevice->byLongRetryLimit);
 218         pr_debug(" byPreambleType= %d\n", (int)pDevice->byPreambleType);
 219         pr_debug(" byShortPreamble= %d\n", (int)pDevice->byShortPreamble);
 220         pr_debug(" byBBType= %d\n", (int)pDevice->byBBType);
 221 }
 222
 223 /*
 224  * Initialisation of MAC & BBP registers
 225  */
 226
 227 static void device_init_registers(struct vnt_private *pDevice)
 228 {
 229         unsigned long flags;
 230         unsigned int ii;
 231         unsigned char byValue;
 232         unsigned char byCCKPwrdBm = 0;
 233         unsigned char byOFDMPwrdBm = 0;
 234
 235         MACbShutdown(pDevice->PortOffset);
 236         BBvSoftwareReset(pDevice);
 237
 238         /* Do MACbSoftwareReset in MACvInitialize */
 239         MACbSoftwareReset(pDevice->PortOffset);
 240
 241         pDevice->bAES = false;
 242
 243         /* Only used in 11g type, sync with ERP IE */
 244         pDevice->bProtectMode = false;
 245
 246         pDevice->bNonERPPresent = false;
 247         pDevice->bBarkerPreambleMd = false;
 248         pDevice->wCurrentRate = RATE_1M;
 249         pDevice->byTopOFDMBasicRate = RATE_24M;
 250         pDevice->byTopCCKBasicRate = RATE_1M;
 251
 252         /* Target to IF pin while programming to RF chip. */
 253         pDevice->byRevId = 0;
 254
 255         /* init MAC */
 256         MACvInitialize(pDevice->PortOffset);
 257
 258         /* Get Local ID */
 259         VNSvInPortB(pDevice->PortOffset + MAC_REG_LOCALID, &pDevice->byLocalID);
 260
 261         spin_lock_irqsave(&pDevice->lock, flags);
 262
 263         SROMvReadAllContents(pDevice->PortOffset, pDevice->abyEEPROM);
 264
 265         spin_unlock_irqrestore(&pDevice->lock, flags);
 266
 267         /* Get Channel range */
 268         pDevice->byMinChannel = 1;
 269         pDevice->byMaxChannel = CB_MAX_CHANNEL;
 270
 271         /* Get Antena */
 272         byValue = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_ANTENNA);
 273         if (byValue & EEP_ANTINV)
 274                 pDevice->bTxRxAntInv = true;
 275         else
 276                 pDevice->bTxRxAntInv = false;
 277
 278         byValue &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 279         /* if not set default is All */
 280         if (byValue == 0)
 281                 byValue = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 282
 283         if (byValue == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 284                 pDevice->byAntennaCount = 2;
 285                 pDevice->byTxAntennaMode = ANT_B;
 286                 pDevice->dwTxAntennaSel = 1;
 287                 pDevice->dwRxAntennaSel = 1;
 288
 289                 if (pDevice->bTxRxAntInv)
 290                         pDevice->byRxAntennaMode = ANT_A;
 291                 else
 292                         pDevice->byRxAntennaMode = ANT_B;
 293         } else  {
 294                 pDevice->byAntennaCount = 1;
 295                 pDevice->dwTxAntennaSel = 0;
 296                 pDevice->dwRxAntennaSel = 0;
 297
 298                 if (byValue & EEP_ANTENNA_AUX) {
 299                         pDevice->byTxAntennaMode = ANT_A;
 300
 301                         if (pDevice->bTxRxAntInv)
 302                                 pDevice->byRxAntennaMode = ANT_B;
 303                         else
 304                                 pDevice->byRxAntennaMode = ANT_A;
 305                 } else {
 306                         pDevice->byTxAntennaMode = ANT_B;
 307
 308                         if (pDevice->bTxRxAntInv)
 309                                 pDevice->byRxAntennaMode = ANT_A;
 310                         else
 311                                 pDevice->byRxAntennaMode = ANT_B;
 312                 }
 313         }
 314
 315         /* Set initial antenna mode */
 316         BBvSetTxAntennaMode(pDevice, pDevice->byTxAntennaMode);
 317         BBvSetRxAntennaMode(pDevice, pDevice->byRxAntennaMode);
 318
 319         /* zonetype initial */
 320         pDevice->byOriginalZonetype = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 321
 322         if (!pDevice->bZoneRegExist)
 323                 pDevice->byZoneType = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 324
 325         pr_debug("pDevice->byZoneType = %x\n", pDevice->byZoneType);
 326
 327         /* Init RF module */
 328         RFbInit(pDevice);
 329
 330         /* Get Desire Power Value */
 331         pDevice->byCurPwr = 0xFF;
 332         pDevice->byCCKPwr = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_CCK);
 333         pDevice->byOFDMPwrG = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_OFDMG);
 334
 335         /* Load power Table */
 336         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 337                 pDevice->abyCCKPwrTbl[ii + 1] =
 338                         SROMbyReadEmbedded(pDevice->PortOffset,
 339                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 340                 if (pDevice->abyCCKPwrTbl[ii + 1] == 0)
 341                         pDevice->abyCCKPwrTbl[ii+1] = pDevice->byCCKPwr;
 342
 343                 pDevice->abyOFDMPwrTbl[ii + 1] =
 344                         SROMbyReadEmbedded(pDevice->PortOffset,
 345                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 346                 if (pDevice->abyOFDMPwrTbl[ii + 1] == 0)
 347                         pDevice->abyOFDMPwrTbl[ii + 1] = pDevice->byOFDMPwrG;
 348
 349                 pDevice->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 350                 pDevice->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 351         }
 352
 353         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 354         for (ii = 11; ii < 14; ii++) {
 355                 pDevice->abyCCKPwrTbl[ii] = pDevice->abyCCKPwrTbl[10];
 356                 pDevice->abyOFDMPwrTbl[ii] = pDevice->abyOFDMPwrTbl[10];
 357         }
 358
 359         /* Load OFDM A Power Table */
 360         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 361                 pDevice->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 362                         SROMbyReadEmbedded(pDevice->PortOffset,
 363                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 364
 365                 pDevice->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 366                         SROMbyReadEmbedded(pDevice->PortOffset,
 367                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 368         }
 369
 370         if (pDevice->byLocalID > REV_ID_VT3253_B1) {
 371                 MACvSelectPage1(pDevice->PortOffset);
 372
 373                 VNSvOutPortB(pDevice->PortOffset + MAC_REG_MSRCTL + 1,
 374                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 375
 376                 MACvSelectPage0(pDevice->PortOffset);
 377         }
 378
 379         /* use relative tx timeout and 802.11i D4 */
 380         MACvWordRegBitsOn(pDevice->PortOffset,
 381                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 382
 383         /* set performance parameter by registry */
 384         MACvSetShortRetryLimit(pDevice->PortOffset, pDevice->byShortRetryLimit);
 385         MACvSetLongRetryLimit(pDevice->PortOffset, pDevice->byLongRetryLimit);
 386
 387         /* reset TSF counter */
 388         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 389         /* enable TSF counter */
 390         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 391
 392         /* initialize BBP registers */
 393         BBbVT3253Init(pDevice);
 394
 395         if (pDevice->bUpdateBBVGA) {
 396                 pDevice->byBBVGACurrent = pDevice->abyBBVGA[0];
 397                 pDevice->byBBVGANew = pDevice->byBBVGACurrent;
 398                 BBvSetVGAGainOffset(pDevice, pDevice->abyBBVGA[0]);
 399         }
 400
 401         BBvSetRxAntennaMode(pDevice, pDevice->byRxAntennaMode);
 402         BBvSetTxAntennaMode(pDevice, pDevice->byTxAntennaMode);
 403
 404         /* Set BB and packet type at the same time. */
 405         /* Set Short Slot Time, xIFS, and RSPINF. */
 406         pDevice->wCurrentRate = RATE_54M;
 407
 408         pDevice->bRadioOff = false;
 409
 410         pDevice->byRadioCtl = SROMbyReadEmbedded(pDevice->PortOffset,
 411                                                  EEP_OFS_RADIOCTL);
 412         pDevice->bHWRadioOff = false;
 413
 414         if (pDevice->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 415                 /* Get GPIO */
 416                 MACvGPIOIn(pDevice->PortOffset, &pDevice->byGPIO);
 417
 418                 if (((pDevice->byGPIO & GPIO0_DATA) &&
 419                      !(pDevice->byRadioCtl & EEP_RADIOCTL_INV)) ||
 420                      (!(pDevice->byGPIO & GPIO0_DATA) &&
 421                      (pDevice->byRadioCtl & EEP_RADIOCTL_INV)))
 422                         pDevice->bHWRadioOff = true;
 423         }
 424
 425         if (pDevice->bHWRadioOff || pDevice->bRadioControlOff)
 426                 CARDbRadioPowerOff(pDevice);
 427
 428         /* get Permanent network address */
 429         SROMvReadEtherAddress(pDevice->PortOffset, pDevice->abyCurrentNetAddr);
 430         pr_debug("Network address = %pM\n", pDevice->abyCurrentNetAddr);
 431
 432         /* reset Tx pointer */
 433         CARDvSafeResetRx(pDevice);
 434         /* reset Rx pointer */
 435         CARDvSafeResetTx(pDevice);
 436
 437         if (pDevice->byLocalID <= REV_ID_VT3253_A1)
 438                 MACvRegBitsOn(pDevice->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 439
 440         /* Turn On Rx DMA */
 441         MACvReceive0(pDevice->PortOffset);
 442         MACvReceive1(pDevice->PortOffset);
 443
 444         /* start the adapter */
 445         MACvStart(pDevice->PortOffset);
 446 }
 447
 448 static void device_print_info(struct vnt_private *pDevice)
 449 {
 450         dev_info(&pDevice->pcid->dev, "%s\n", get_chip_name(pDevice->chip_id));
 451
 452         dev_info(&pDevice->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 453                  pDevice->abyCurrentNetAddr, (unsigned long)pDevice->ioaddr,
 454                  (unsigned long)pDevice->PortOffset, pDevice->pcid->irq);
 455 }
 456
 457 static void vt6655_init_info(struct pci_dev *pcid,
 458                              struct vnt_private **ppDevice,
 459                              PCHIP_INFO pChip_info)
 460 {
 461         memset(*ppDevice, 0, sizeof(**ppDevice));
 462
 463         (*ppDevice)->pcid = pcid;
 464         (*ppDevice)->chip_id = pChip_info->chip_id;
 465         (*ppDevice)->io_size = pChip_info->io_size;
 466         (*ppDevice)->nTxQueues = pChip_info->nTxQueue;
 467         (*ppDevice)->multicast_limit = 32;
 468
 469         spin_lock_init(&((*ppDevice)->lock));
 470 }
 471
 472 static bool device_get_pci_info(struct vnt_private *pDevice,
 473                                 struct pci_dev *pcid)
 474 {
 475         u16 pci_cmd;
 476         u8  b;
 477         unsigned int cis_addr;
 478
 479         pci_read_config_byte(pcid, PCI_REVISION_ID, &pDevice->byRevId);
 480         pci_read_config_word(pcid, PCI_SUBSYSTEM_ID, &pDevice->SubSystemID);
 481         pci_read_config_word(pcid, PCI_SUBSYSTEM_VENDOR_ID, &pDevice->SubVendorID);
 482         pci_read_config_word(pcid, PCI_COMMAND, (u16 *)&(pci_cmd));
 483
 484         pci_set_master(pcid);
 485
 486         pDevice->memaddr = pci_resource_start(pcid, 0);
 487         pDevice->ioaddr = pci_resource_start(pcid, 1);
 488
 489         cis_addr = pci_resource_start(pcid, 2);
 490
 491         pDevice->pcid = pcid;
 492
 493         pci_read_config_byte(pcid, PCI_COMMAND, &b);
 494         pci_write_config_byte(pcid, PCI_COMMAND, (b|PCI_COMMAND_MASTER));
 495
 496         return true;
 497 }
 498
 499 static void device_free_info(struct vnt_private *pDevice)
 500 {
 501         if (!pDevice)
 502                 return;
 503
 504         if (pDevice->mac_hw)
 505                 ieee80211_unregister_hw(pDevice->hw);
 506
 507         if (pDevice->PortOffset)
 508                 iounmap(pDevice->PortOffset);
 509
 510         if (pDevice->pcid)
 511                 pci_release_regions(pDevice->pcid);
 512
 513         if (pDevice->hw)
 514                 ieee80211_free_hw(pDevice->hw);
 515 }
 516
 517 static bool device_init_rings(struct vnt_private *pDevice)
 518 {
 519         void *vir_pool;
 520
 521         /*allocate all RD/TD rings a single pool*/
 522         vir_pool = dma_zalloc_coherent(&pDevice->pcid->dev,
 523                                          pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc) +
 524                                          pDevice->sOpts.nRxDescs1 * sizeof(struct vnt_rx_desc) +
 525                                          pDevice->sOpts.nTxDescs[0] * sizeof(struct vnt_tx_desc) +
 526                                          pDevice->sOpts.nTxDescs[1] * sizeof(struct vnt_tx_desc),
 527                                          &pDevice->pool_dma, GFP_ATOMIC);
 528         if (vir_pool == NULL) {
 529                 dev_err(&pDevice->pcid->dev, "allocate desc dma memory failed\n");
 530                 return false;
 531         }
 532
 533         pDevice->aRD0Ring = vir_pool;
 534         pDevice->aRD1Ring = vir_pool +
 535                 pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc);
 536
 537         pDevice->rd0_pool_dma = pDevice->pool_dma;
 538         pDevice->rd1_pool_dma = pDevice->rd0_pool_dma +
 539                 pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc);
 540
 541         pDevice->tx0_bufs = dma_zalloc_coherent(&pDevice->pcid->dev,
 542                                                   pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 543                                                   pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 544                                                   CB_BEACON_BUF_SIZE +
 545                                                   CB_MAX_BUF_SIZE,
 546                                                   &pDevice->tx_bufs_dma0,
 547                                                   GFP_ATOMIC);
 548         if (pDevice->tx0_bufs == NULL) {
 549                 dev_err(&pDevice->pcid->dev, "allocate buf dma memory failed\n");
 550
 551                 dma_free_coherent(&pDevice->pcid->dev,
 552                                     pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc) +
 553                                     pDevice->sOpts.nRxDescs1 * sizeof(struct vnt_rx_desc) +
 554                                     pDevice->sOpts.nTxDescs[0] * sizeof(struct vnt_tx_desc) +
 555                                     pDevice->sOpts.nTxDescs[1] * sizeof(struct vnt_tx_desc),
 556                                     vir_pool, pDevice->pool_dma
 557                         );
 558                 return false;
 559         }
 560
 561         pDevice->td0_pool_dma = pDevice->rd1_pool_dma +
 562                 pDevice->sOpts.nRxDescs1 * sizeof(struct vnt_rx_desc);
 563
 564         pDevice->td1_pool_dma = pDevice->td0_pool_dma +
 565                 pDevice->sOpts.nTxDescs[0] * sizeof(struct vnt_tx_desc);
 566
 567         /* vir_pool: pvoid type */
 568         pDevice->apTD0Rings = vir_pool
 569                 + pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc)
 570                 + pDevice->sOpts.nRxDescs1 * sizeof(struct vnt_rx_desc);
 571
 572         pDevice->apTD1Rings = vir_pool
 573                 + pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc)
 574                 + pDevice->sOpts.nRxDescs1 * sizeof(struct vnt_rx_desc)
 575                 + pDevice->sOpts.nTxDescs[0] * sizeof(struct vnt_tx_desc);
 576
 577         pDevice->tx1_bufs = pDevice->tx0_bufs +
 578                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 579
 580         pDevice->tx_beacon_bufs = pDevice->tx1_bufs +
 581                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 582
 583         pDevice->pbyTmpBuff = pDevice->tx_beacon_bufs +
 584                 CB_BEACON_BUF_SIZE;
 585
 586         pDevice->tx_bufs_dma1 = pDevice->tx_bufs_dma0 +
 587                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 588
 589         pDevice->tx_beacon_dma = pDevice->tx_bufs_dma1 +
 590                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 591
 592         return true;
 593 }
 594
 595 static void device_free_rings(struct vnt_private *pDevice)
 596 {
 597         dma_free_coherent(&pDevice->pcid->dev,
 598                             pDevice->sOpts.nRxDescs0 * sizeof(struct vnt_rx_desc) +
 599                             pDevice->sOpts.nRxDescs1 * sizeof(struct vnt_rx_desc) +
 600                             pDevice->sOpts.nTxDescs[0] * sizeof(struct vnt_tx_desc) +
 601                             pDevice->sOpts.nTxDescs[1] * sizeof(struct vnt_tx_desc)
 602                             ,
 603                             pDevice->aRD0Ring, pDevice->pool_dma
 604                 );
 605
 606         if (pDevice->tx0_bufs)
 607                 dma_free_coherent(&pDevice->pcid->dev,
 608                                     pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 609                                     pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 610                                     CB_BEACON_BUF_SIZE +
 611                                     CB_MAX_BUF_SIZE,
 612                                     pDevice->tx0_bufs, pDevice->tx_bufs_dma0
 613                         );
 614 }
 615
 616 static void device_init_rd0_ring(struct vnt_private *pDevice)
 617 {
 618         int i;
 619         dma_addr_t      curr = pDevice->rd0_pool_dma;
 620         struct vnt_rx_desc *pDesc;
 621
 622         /* Init the RD0 ring entries */
 623         for (i = 0; i < pDevice->sOpts.nRxDescs0;
 624              i ++, curr += sizeof(struct vnt_rx_desc)) {
 625                 pDesc = &(pDevice->aRD0Ring[i]);
 626                 pDesc->rd_info = alloc_rd_info();
 627
 628                 if (!device_alloc_rx_buf(pDevice, pDesc))
 629                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 630
 631                 pDesc->next = &(pDevice->aRD0Ring[(i+1) % pDevice->sOpts.nRxDescs0]);
 632                 pDesc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 633         }
 634
 635         if (i > 0)
 636                 pDevice->aRD0Ring[i-1].next_desc = cpu_to_le32(pDevice->rd0_pool_dma);
 637         pDevice->pCurrRD[0] = &(pDevice->aRD0Ring[0]);
 638 }
 639
 640 static void device_init_rd1_ring(struct vnt_private *pDevice)
 641 {
 642         int i;
 643         dma_addr_t      curr = pDevice->rd1_pool_dma;
 644         struct vnt_rx_desc *pDesc;
 645
 646         /* Init the RD1 ring entries */
 647         for (i = 0; i < pDevice->sOpts.nRxDescs1;
 648              i ++, curr += sizeof(struct vnt_rx_desc)) {
 649                 pDesc = &(pDevice->aRD1Ring[i]);
 650                 pDesc->rd_info = alloc_rd_info();
 651
 652                 if (!device_alloc_rx_buf(pDevice, pDesc))
 653                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 654
 655                 pDesc->next = &(pDevice->aRD1Ring[(i+1) % pDevice->sOpts.nRxDescs1]);
 656                 pDesc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
 657         }
 658
 659         if (i > 0)
 660                 pDevice->aRD1Ring[i-1].next_desc = cpu_to_le32(pDevice->rd1_pool_dma);
 661         pDevice->pCurrRD[1] = &(pDevice->aRD1Ring[0]);
 662 }
 663
 664 static void device_free_rd0_ring(struct vnt_private *pDevice)
 665 {
 666         int i;
 667
 668         for (i = 0; i < pDevice->sOpts.nRxDescs0; i++) {
 669                 struct vnt_rx_desc *pDesc = &(pDevice->aRD0Ring[i]);
 670                 struct vnt_rd_info *rd_info = pDesc->rd_info;
 671
 672                 dma_unmap_single(&pDevice->pcid->dev, rd_info->skb_dma,
 673                                  pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 674
 675                 dev_kfree_skb(rd_info->skb);
 676
 677                 kfree(pDesc->rd_info);
 678         }
 679 }
 680
 681 static void device_free_rd1_ring(struct vnt_private *pDevice)
 682 {
 683         int i;
 684
 685         for (i = 0; i < pDevice->sOpts.nRxDescs1; i++) {
 686                 struct vnt_rx_desc *pDesc = &(pDevice->aRD1Ring[i]);
 687                 struct vnt_rd_info *rd_info = pDesc->rd_info;
 688
 689                 dma_unmap_single(&pDevice->pcid->dev, rd_info->skb_dma,
 690                                  pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 691
 692                 dev_kfree_skb(rd_info->skb);
 693
 694                 kfree(pDesc->rd_info);
 695         }
 696 }
 697
 698 static void device_init_td0_ring(struct vnt_private *pDevice)
 699 {
 700         int i;
 701         dma_addr_t  curr;
 702         struct vnt_tx_desc *pDesc;
 703
 704         curr = pDevice->td0_pool_dma;
 705         for (i = 0; i < pDevice->sOpts.nTxDescs[0];
 706              i++, curr += sizeof(struct vnt_tx_desc)) {
 707                 pDesc = &(pDevice->apTD0Rings[i]);
 708                 pDesc->td_info = alloc_td_info();
 709
 710                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 711                         pDesc->td_info->buf = pDevice->tx0_bufs + (i)*PKT_BUF_SZ;
 712                         pDesc->td_info->buf_dma = pDevice->tx_bufs_dma0 + (i)*PKT_BUF_SZ;
 713                 }
 714                 pDesc->next = &(pDevice->apTD0Rings[(i+1) % pDevice->sOpts.nTxDescs[0]]);
 715                 pDesc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 716         }
 717
 718         if (i > 0)
 719                 pDevice->apTD0Rings[i-1].next_desc = cpu_to_le32(pDevice->td0_pool_dma);
 720         pDevice->apTailTD[0] = pDevice->apCurrTD[0] = &(pDevice->apTD0Rings[0]);
 721 }
 722
 723 static void device_init_td1_ring(struct vnt_private *pDevice)
 724 {
 725         int i;
 726         dma_addr_t  curr;
 727         struct vnt_tx_desc *pDesc;
 728
 729         /* Init the TD ring entries */
 730         curr = pDevice->td1_pool_dma;
 731         for (i = 0; i < pDevice->sOpts.nTxDescs[1];
 732              i++, curr += sizeof(struct vnt_tx_desc)) {
 733                 pDesc = &(pDevice->apTD1Rings[i]);
 734                 pDesc->td_info = alloc_td_info();
 735
 736                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 737                         pDesc->td_info->buf = pDevice->tx1_bufs + (i) * PKT_BUF_SZ;
 738                         pDesc->td_info->buf_dma = pDevice->tx_bufs_dma1 + (i) * PKT_BUF_SZ;
 739                 }
 740                 pDesc->next = &(pDevice->apTD1Rings[(i + 1) % pDevice->sOpts.nTxDescs[1]]);
 741                 pDesc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
 742         }
 743
 744         if (i > 0)
 745                 pDevice->apTD1Rings[i-1].next_desc = cpu_to_le32(pDevice->td1_pool_dma);
 746         pDevice->apTailTD[1] = pDevice->apCurrTD[1] = &(pDevice->apTD1Rings[0]);
 747 }
 748
 749 static void device_free_td0_ring(struct vnt_private *pDevice)
 750 {
 751         int i;
 752
 753         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++) {
 754                 struct vnt_tx_desc *pDesc = &pDevice->apTD0Rings[i];
 755                 struct vnt_td_info *pTDInfo = pDesc->td_info;
 756
 757                 dev_kfree_skb(pTDInfo->skb);
 758                 kfree(pDesc->td_info);
 759         }
 760 }
 761
 762 static void device_free_td1_ring(struct vnt_private *pDevice)
 763 {
 764         int i;
 765
 766         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++) {
 767                 struct vnt_tx_desc *pDesc = &pDevice->apTD1Rings[i];
 768                 struct vnt_td_info *pTDInfo = pDesc->td_info;
 769
 770                 dev_kfree_skb(pTDInfo->skb);
 771                 kfree(pDesc->td_info);
 772         }
 773 }
 774
 775 /*-----------------------------------------------------------------*/
 776
 777 static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 778 {
 779         struct vnt_rx_desc *pRD;
 780         int works = 0;
 781
 782         for (pRD = pDevice->pCurrRD[uIdx];
 783              pRD->rd0.owner == OWNED_BY_HOST;
 784              pRD = pRD->next) {
 785                 if (works++ > 15)
 786                         break;
 787
 788                 if (!pRD->rd_info->skb)
 789                         break;
 790
 791                 if (vnt_receive_frame(pDevice, pRD)) {
 792                         if (!device_alloc_rx_buf(pDevice, pRD)) {
 793                                 dev_err(&pDevice->pcid->dev,
 794                                         "can not allocate rx buf\n");
 795                                 break;
 796                         }
 797                 }
 798                 pRD->rd0.owner = OWNED_BY_NIC;
 799         }
 800
 801         pDevice->pCurrRD[uIdx] = pRD;
 802
 803         return works;
 804 }
 805
 806 static bool device_alloc_rx_buf(struct vnt_private *pDevice,
 807                                 struct vnt_rx_desc *pRD)
 808 {
 809         struct vnt_rd_info *pRDInfo = pRD->rd_info;
 810
 811         pRDInfo->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 812         if (pRDInfo->skb == NULL)
 813                 return false;
 814
 815         pRDInfo->skb_dma =
 816                 dma_map_single(&pDevice->pcid->dev,
 817                                skb_put(pRDInfo->skb, skb_tailroom(pRDInfo->skb)),
 818                                pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 819
 820         *((unsigned int *)&pRD->rd0) = 0; /* FIX cast */
 821
 822         pRD->rd0.res_count = cpu_to_le16(pDevice->rx_buf_sz);
 823         pRD->rd0.owner = OWNED_BY_NIC;
 824         pRD->rd1.req_count = cpu_to_le16(pDevice->rx_buf_sz);
 825         pRD->buff_addr = cpu_to_le32(pRDInfo->skb_dma);
 826
 827         return true;
 828 }
 829
 830 static const u8 fallback_rate0[5][5] = {
 831         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 832         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 833         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 834         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 835         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 836 };
 837
 838 static const u8 fallback_rate1[5][5] = {
 839         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 840         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 841         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 842         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 843         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 844 };
 845
 846 static int vnt_int_report_rate(struct vnt_private *priv,
 847                                struct vnt_td_info *context, u8 tsr0, u8 tsr1)
 848 {
 849         struct vnt_tx_fifo_head *fifo_head;
 850         struct ieee80211_tx_info *info;
 851         struct ieee80211_rate *rate;
 852         u16 fb_option;
 853         u8 tx_retry = (tsr0 & TSR0_NCR);
 854         s8 idx;
 855
 856         if (!context)
 857                 return -ENOMEM;
 858
 859         if (!context->skb)
 860                 return -EINVAL;
 861
 862         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 863         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 864                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 865
 866         info = IEEE80211_SKB_CB(context->skb);
 867         idx = info->control.rates[0].idx;
 868
 869         if (fb_option && !(tsr1 & TSR1_TERR)) {
 870                 u8 tx_rate;
 871                 u8 retry = tx_retry;
 872
 873                 rate = ieee80211_get_tx_rate(priv->hw, info);
 874                 tx_rate = rate->hw_value - RATE_18M;
 875
 876                 if (retry > 4)
 877                         retry = 4;
 878
 879                 if (fb_option & FIFOCTL_AUTO_FB_0)
 880                         tx_rate = fallback_rate0[tx_rate][retry];
 881                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 882                         tx_rate = fallback_rate1[tx_rate][retry];
 883
 884                 if (info->band == IEEE80211_BAND_5GHZ)
 885                         idx = tx_rate - RATE_6M;
 886                 else
 887                         idx = tx_rate;
 888         }
 889
 890         ieee80211_tx_info_clear_status(info);
 891
 892         info->status.rates[0].count = tx_retry;
 893
 894         if (!(tsr1 & TSR1_TERR)) {
 895                 info->status.rates[0].idx = idx;
 896
 897                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 898                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 899                 else
 900                         info->flags |= IEEE80211_TX_STAT_ACK;
 901         }
 902
 903         return 0;
 904 }
 905
 906 static int device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 907 {
 908         struct vnt_tx_desc *pTD;
 909         int                      works = 0;
 910         unsigned char byTsr0;
 911         unsigned char byTsr1;
 912
 913         for (pTD = pDevice->apTailTD[uIdx]; pDevice->iTDUsed[uIdx] > 0; pTD = pTD->next) {
 914                 if (pTD->td0.owner == OWNED_BY_NIC)
 915                         break;
 916                 if (works++ > 15)
 917                         break;
 918
 919                 byTsr0 = pTD->td0.tsr0;
 920                 byTsr1 = pTD->td0.tsr1;
 921
 922                 /* Only the status of first TD in the chain is correct */
 923                 if (pTD->td1.tcr & TCR_STP) {
 924                         if ((pTD->td_info->flags & TD_FLAGS_NETIF_SKB) != 0) {
 925                                 if (!(byTsr1 & TSR1_TERR)) {
 926                                         if (byTsr0 != 0) {
 927                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 928                                                          (int)uIdx, byTsr1,
 929                                                          byTsr0);
 930                                         }
 931                                 } else {
 932                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 933                                                  (int)uIdx, byTsr1, byTsr0);
 934                                 }
 935                         }
 936
 937                         if (byTsr1 & TSR1_TERR) {
 938                                 if ((pTD->td_info->flags & TD_FLAGS_PRIV_SKB) != 0) {
 939                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 940                                                  (int)uIdx, byTsr1, byTsr0);
 941                                 }
 942                         }
 943
 944                         vnt_int_report_rate(pDevice, pTD->td_info, byTsr0, byTsr1);
 945
 946                         device_free_tx_buf(pDevice, pTD);
 947                         pDevice->iTDUsed[uIdx]--;
 948                 }
 949         }
 950
 951         pDevice->apTailTD[uIdx] = pTD;
 952
 953         return works;
 954 }
 955
 956 static void device_error(struct vnt_private *pDevice, unsigned short status)
 957 {
 958         if (status & ISR_FETALERR) {
 959                 dev_err(&pDevice->pcid->dev, "Hardware fatal error\n");
 960
 961                 MACbShutdown(pDevice->PortOffset);
 962                 return;
 963         }
 964 }
 965
 966 static void device_free_tx_buf(struct vnt_private *pDevice,
 967                                struct vnt_tx_desc *pDesc)
 968 {
 969         struct vnt_td_info *pTDInfo = pDesc->td_info;
 970         struct sk_buff *skb = pTDInfo->skb;
 971
 972         if (skb)
 973                 ieee80211_tx_status_irqsafe(pDevice->hw, skb);
 974
 975         pTDInfo->skb = NULL;
 976         pTDInfo->flags = 0;
 977 }
 978
 979 static void vnt_check_bb_vga(struct vnt_private *priv)
 980 {
 981         long dbm;
 982         int i;
 983
 984         if (!priv->bUpdateBBVGA)
 985                 return;
 986
 987         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
 988                 return;
 989
 990         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
 991                 return;
 992
 993         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
 994
 995         for (i = 0; i < BB_VGA_LEVEL; i++) {
 996                 if (dbm < priv->ldBmThreshold[i]) {
 997                         priv->byBBVGANew = priv->abyBBVGA[i];
 998                         break;
 999                 }
1000         }
1001
1002         if (priv->byBBVGANew == priv->byBBVGACurrent) {
1003                 priv->uBBVGADiffCount = 1;
1004                 return;
1005         }
1006
1007         priv->uBBVGADiffCount++;
1008
1009         if (priv->uBBVGADiffCount == 1) {
1010                 /* first VGA diff gain */
1011                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1012
1013                 dev_dbg(&priv->pcid->dev,
1014                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1015                         (int)dbm, priv->byBBVGANew,
1016                         priv->byBBVGACurrent,
1017                         (int)priv->uBBVGADiffCount);
1018         }
1019
1020         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1021                 dev_dbg(&priv->pcid->dev,
1022                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1023                         (int)dbm, priv->byBBVGANew,
1024                         priv->byBBVGACurrent,
1025                         (int)priv->uBBVGADiffCount);
1026
1027                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1028         }
1029 }
1030
1031 static void vnt_interrupt_process(struct vnt_private *priv)
1032 {
1033         struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
1034         int             max_count = 0;
1035         u32 mib_counter;
1036         u32 isr;
1037         unsigned long flags;
1038
1039         MACvReadISR(priv->PortOffset, &isr);
1040
1041         if (isr == 0)
1042                 return;
1043
1044         if (isr == 0xffffffff) {
1045                 pr_debug("isr = 0xffff\n");
1046                 return;
1047         }
1048
1049         MACvIntDisable(priv->PortOffset);
1050
1051         spin_lock_irqsave(&priv->lock, flags);
1052
1053         /* Read low level stats */
1054         MACvReadMIBCounter(priv->PortOffset, &mib_counter);
1055
1056         low_stats->dot11RTSSuccessCount += mib_counter & 0xff;
1057         low_stats->dot11RTSFailureCount += (mib_counter >> 8) & 0xff;
1058         low_stats->dot11ACKFailureCount += (mib_counter >> 16) & 0xff;
1059         low_stats->dot11FCSErrorCount += (mib_counter >> 24) & 0xff;
1060
1061         /*
1062          * TBD....
1063          * Must do this after doing rx/tx, cause ISR bit is slow
1064          * than RD/TD write back
1065          * update ISR counter
1066          */
1067         while (isr && priv->vif) {
1068                 MACvWriteISR(priv->PortOffset, isr);
1069
1070                 if (isr & ISR_FETALERR) {
1071                         pr_debug(" ISR_FETALERR\n");
1072                         VNSvOutPortB(priv->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1073                         VNSvOutPortW(priv->PortOffset +
1074                                      MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1075                         device_error(priv, isr);
1076                 }
1077
1078                 if (isr & ISR_TBTT) {
1079                         if (priv->op_mode != NL80211_IFTYPE_ADHOC)
1080                                 vnt_check_bb_vga(priv);
1081
1082                         priv->bBeaconSent = false;
1083                         if (priv->bEnablePSMode)
1084                                 PSbIsNextTBTTWakeUp((void *)priv);
1085
1086                         if ((priv->op_mode == NL80211_IFTYPE_AP ||
1087                             priv->op_mode == NL80211_IFTYPE_ADHOC) &&
1088                             priv->vif->bss_conf.enable_beacon) {
1089                                 MACvOneShotTimer1MicroSec(priv->PortOffset,
1090                                                           (priv->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1091                         }
1092
1093                         /* TODO: adhoc PS mode */
1094
1095                 }
1096
1097                 if (isr & ISR_BNTX) {
1098                         if (priv->op_mode == NL80211_IFTYPE_ADHOC) {
1099                                 priv->bIsBeaconBufReadySet = false;
1100                                 priv->cbBeaconBufReadySetCnt = 0;
1101                         }
1102
1103                         priv->bBeaconSent = true;
1104                 }
1105
1106                 if (isr & ISR_RXDMA0)
1107                         max_count += device_rx_srv(priv, TYPE_RXDMA0);
1108
1109                 if (isr & ISR_RXDMA1)
1110                         max_count += device_rx_srv(priv, TYPE_RXDMA1);
1111
1112                 if (isr & ISR_TXDMA0)
1113                         max_count += device_tx_srv(priv, TYPE_TXDMA0);
1114
1115                 if (isr & ISR_AC0DMA)
1116                         max_count += device_tx_srv(priv, TYPE_AC0DMA);
1117
1118                 if (isr & ISR_SOFTTIMER1) {
1119                         if (priv->vif->bss_conf.enable_beacon)
1120                                 vnt_beacon_make(priv, priv->vif);
1121                 }
1122
1123                 /* If both buffers available wake the queue */
1124                 if (AVAIL_TD(priv, TYPE_TXDMA0) &&
1125                     AVAIL_TD(priv, TYPE_AC0DMA) &&
1126                     ieee80211_queue_stopped(priv->hw, 0))
1127                         ieee80211_wake_queues(priv->hw);
1128
1129                 MACvReadISR(priv->PortOffset, &isr);
1130
1131                 MACvReceive0(priv->PortOffset);
1132                 MACvReceive1(priv->PortOffset);
1133
1134                 if (max_count > priv->sOpts.int_works)
1135                         break;
1136         }
1137
1138         spin_unlock_irqrestore(&priv->lock, flags);
1139
1140         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1141 }
1142
1143 static void vnt_interrupt_work(struct work_struct *work)
1144 {
1145         struct vnt_private *priv =
1146                 container_of(work, struct vnt_private, interrupt_work);
1147
1148         if (priv->vif)
1149                 vnt_interrupt_process(priv);
1150 }
1151
1152 static irqreturn_t vnt_interrupt(int irq,  void *arg)
1153 {
1154         struct vnt_private *priv = arg;
1155
1156         if (priv->vif)
1157                 schedule_work(&priv->interrupt_work);
1158
1159         return IRQ_HANDLED;
1160 }
1161
1162 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1163 {
1164         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1165         struct vnt_tx_desc *head_td;
1166         u32 dma_idx;
1167         unsigned long flags;
1168
1169         spin_lock_irqsave(&priv->lock, flags);
1170
1171         if (ieee80211_is_data(hdr->frame_control))
1172                 dma_idx = TYPE_AC0DMA;
1173         else
1174                 dma_idx = TYPE_TXDMA0;
1175
1176         if (AVAIL_TD(priv, dma_idx) < 1) {
1177                 spin_unlock_irqrestore(&priv->lock, flags);
1178                 return -ENOMEM;
1179         }
1180
1181         head_td = priv->apCurrTD[dma_idx];
1182
1183         head_td->td1.tcr = 0;
1184
1185         head_td->td_info->skb = skb;
1186
1187         if (dma_idx == TYPE_AC0DMA)
1188                 head_td->td_info->flags = TD_FLAGS_NETIF_SKB;
1189
1190         priv->apCurrTD[dma_idx] = head_td->next;
1191
1192         spin_unlock_irqrestore(&priv->lock, flags);
1193
1194         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1195
1196         spin_lock_irqsave(&priv->lock, flags);
1197
1198         priv->bPWBitOn = false;
1199
1200         /* Set TSR1 & ReqCount in TxDescHead */
1201         head_td->td1.tcr |= (TCR_STP | TCR_EDP | EDMSDU);
1202         head_td->td1.req_count = cpu_to_le16(head_td->td_info->req_count);
1203
1204         head_td->buff_addr = cpu_to_le32(head_td->td_info->buf_dma);
1205
1206         /* Poll Transmit the adapter */
1207         wmb();
1208         head_td->td0.owner = OWNED_BY_NIC;
1209         wmb(); /* second memory barrier */
1210
1211         if (head_td->td_info->flags & TD_FLAGS_NETIF_SKB)
1212                 MACvTransmitAC0(priv->PortOffset);
1213         else
1214                 MACvTransmit0(priv->PortOffset);
1215
1216         priv->iTDUsed[dma_idx]++;
1217
1218         spin_unlock_irqrestore(&priv->lock, flags);
1219
1220         return 0;
1221 }
1222
1223 static void vnt_tx_80211(struct ieee80211_hw *hw,
1224                          struct ieee80211_tx_control *control,
1225                          struct sk_buff *skb)
1226 {
1227         struct vnt_private *priv = hw->priv;
1228
1229         ieee80211_stop_queues(hw);
1230
1231         if (vnt_tx_packet(priv, skb)) {
1232                 ieee80211_free_txskb(hw, skb);
1233
1234                 ieee80211_wake_queues(hw);
1235         }
1236 }
1237
1238 static int vnt_start(struct ieee80211_hw *hw)
1239 {
1240         struct vnt_private *priv = hw->priv;
1241         int ret;
1242
1243         priv->rx_buf_sz = PKT_BUF_SZ;
1244         if (!device_init_rings(priv))
1245                 return -ENOMEM;
1246
1247         ret = request_irq(priv->pcid->irq, &vnt_interrupt,
1248                           IRQF_SHARED, "vt6655", priv);
1249         if (ret) {
1250                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1251                 return ret;
1252         }
1253
1254         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1255         device_init_rd0_ring(priv);
1256         device_init_rd1_ring(priv);
1257         device_init_td0_ring(priv);
1258         device_init_td1_ring(priv);
1259
1260         device_init_registers(priv);
1261
1262         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1263         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1264
1265         ieee80211_wake_queues(hw);
1266
1267         return 0;
1268 }
1269
1270 static void vnt_stop(struct ieee80211_hw *hw)
1271 {
1272         struct vnt_private *priv = hw->priv;
1273
1274         ieee80211_stop_queues(hw);
1275
1276         cancel_work_sync(&priv->interrupt_work);
1277
1278         MACbShutdown(priv->PortOffset);
1279         MACbSoftwareReset(priv->PortOffset);
1280         CARDbRadioPowerOff(priv);
1281
1282         device_free_td0_ring(priv);
1283         device_free_td1_ring(priv);
1284         device_free_rd0_ring(priv);
1285         device_free_rd1_ring(priv);
1286         device_free_rings(priv);
1287
1288         free_irq(priv->pcid->irq, priv);
1289 }
1290
1291 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1292 {
1293         struct vnt_private *priv = hw->priv;
1294
1295         priv->vif = vif;
1296
1297         switch (vif->type) {
1298         case NL80211_IFTYPE_STATION:
1299                 break;
1300         case NL80211_IFTYPE_ADHOC:
1301                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1302
1303                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1304
1305                 break;
1306         case NL80211_IFTYPE_AP:
1307                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1308
1309                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1310
1311                 break;
1312         default:
1313                 return -EOPNOTSUPP;
1314         }
1315
1316         priv->op_mode = vif->type;
1317
1318         return 0;
1319 }
1320
1321 static void vnt_remove_interface(struct ieee80211_hw *hw,
1322                                  struct ieee80211_vif *vif)
1323 {
1324         struct vnt_private *priv = hw->priv;
1325
1326         switch (vif->type) {
1327         case NL80211_IFTYPE_STATION:
1328                 break;
1329         case NL80211_IFTYPE_ADHOC:
1330                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1331                 MACvRegBitsOff(priv->PortOffset,
1332                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1333                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1334                 break;
1335         case NL80211_IFTYPE_AP:
1336                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1337                 MACvRegBitsOff(priv->PortOffset,
1338                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1339                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1340                 break;
1341         default:
1342                 break;
1343         }
1344
1345         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1346 }
1347
1348
1349 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1350 {
1351         struct vnt_private *priv = hw->priv;
1352         struct ieee80211_conf *conf = &hw->conf;
1353         u8 bb_type;
1354
1355         if (changed & IEEE80211_CONF_CHANGE_PS) {
1356                 if (conf->flags & IEEE80211_CONF_PS)
1357                         PSvEnablePowerSaving(priv, conf->listen_interval);
1358                 else
1359                         PSvDisablePowerSaving(priv);
1360         }
1361
1362         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1363             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1364                 set_channel(priv, conf->chandef.chan);
1365
1366                 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
1367                         bb_type = BB_TYPE_11A;
1368                 else
1369                         bb_type = BB_TYPE_11G;
1370
1371                 if (priv->byBBType != bb_type) {
1372                         priv->byBBType = bb_type;
1373
1374                         CARDbSetPhyParameter(priv, priv->byBBType);
1375                 }
1376         }
1377
1378         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1379                 if (priv->byBBType == BB_TYPE_11B)
1380                         priv->wCurrentRate = RATE_1M;
1381                 else
1382                         priv->wCurrentRate = RATE_54M;
1383
1384                 RFbSetPower(priv, priv->wCurrentRate,
1385                             conf->chandef.chan->hw_value);
1386         }
1387
1388         return 0;
1389 }
1390
1391 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1392                 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
1393                 u32 changed)
1394 {
1395         struct vnt_private *priv = hw->priv;
1396
1397         priv->current_aid = conf->aid;
1398
1399         if (changed & BSS_CHANGED_BSSID && conf->bssid) {
1400                 unsigned long flags;
1401
1402                 spin_lock_irqsave(&priv->lock, flags);
1403
1404                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1405
1406                 spin_unlock_irqrestore(&priv->lock, flags);
1407         }
1408
1409         if (changed & BSS_CHANGED_BASIC_RATES) {
1410                 priv->basic_rates = conf->basic_rates;
1411
1412                 CARDvUpdateBasicTopRate(priv);
1413
1414                 dev_dbg(&priv->pcid->dev,
1415                         "basic rates %x\n", conf->basic_rates);
1416         }
1417
1418         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1419                 if (conf->use_short_preamble) {
1420                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1421                         priv->byPreambleType = true;
1422                 } else {
1423                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1424                         priv->byPreambleType = false;
1425                 }
1426         }
1427
1428         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1429                 if (conf->use_cts_prot)
1430                         MACvEnableProtectMD(priv->PortOffset);
1431                 else
1432                         MACvDisableProtectMD(priv->PortOffset);
1433         }
1434
1435         if (changed & BSS_CHANGED_ERP_SLOT) {
1436                 if (conf->use_short_slot)
1437                         priv->bShortSlotTime = true;
1438                 else
1439                         priv->bShortSlotTime = false;
1440
1441                 CARDbSetPhyParameter(priv, priv->byBBType);
1442                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1443         }
1444
1445         if (changed & BSS_CHANGED_TXPOWER)
1446                 RFbSetPower(priv, priv->wCurrentRate,
1447                             conf->chandef.chan->hw_value);
1448
1449         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1450                 dev_dbg(&priv->pcid->dev,
1451                         "Beacon enable %d\n", conf->enable_beacon);
1452
1453                 if (conf->enable_beacon) {
1454                         vnt_beacon_enable(priv, vif, conf);
1455
1456                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1457                                       TCR_AUTOBCNTX);
1458                 } else {
1459                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1460                                        TCR_AUTOBCNTX);
1461                 }
1462         }
1463
1464         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
1465             priv->op_mode != NL80211_IFTYPE_AP) {
1466                 if (conf->assoc && conf->beacon_rate) {
1467                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1468                                        conf->sync_tsf);
1469
1470                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1471
1472                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1473                 } else {
1474                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1475                                      TFTCTL_TSFCNTRST);
1476                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1477                                      TFTCTL_TSFCNTREN);
1478                 }
1479         }
1480 }
1481
1482 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1483         struct netdev_hw_addr_list *mc_list)
1484 {
1485         struct vnt_private *priv = hw->priv;
1486         struct netdev_hw_addr *ha;
1487         u64 mc_filter = 0;
1488         u32 bit_nr = 0;
1489
1490         netdev_hw_addr_list_for_each(ha, mc_list) {
1491                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1492
1493                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1494         }
1495
1496         priv->mc_list_count = mc_list->count;
1497
1498         return mc_filter;
1499 }
1500
1501 static void vnt_configure(struct ieee80211_hw *hw,
1502         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
1503 {
1504         struct vnt_private *priv = hw->priv;
1505         u8 rx_mode = 0;
1506
1507         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
1508
1509         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1510
1511         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1512
1513         if (changed_flags & FIF_ALLMULTI) {
1514                 if (*total_flags & FIF_ALLMULTI) {
1515                         unsigned long flags;
1516
1517                         spin_lock_irqsave(&priv->lock, flags);
1518
1519                         if (priv->mc_list_count > 2) {
1520                                 MACvSelectPage1(priv->PortOffset);
1521
1522                                 VNSvOutPortD(priv->PortOffset +
1523                                              MAC_REG_MAR0, 0xffffffff);
1524                                 VNSvOutPortD(priv->PortOffset +
1525                                             MAC_REG_MAR0 + 4, 0xffffffff);
1526
1527                                 MACvSelectPage0(priv->PortOffset);
1528                         } else {
1529                                 MACvSelectPage1(priv->PortOffset);
1530
1531                                 VNSvOutPortD(priv->PortOffset +
1532                                              MAC_REG_MAR0, (u32)multicast);
1533                                 VNSvOutPortD(priv->PortOffset +
1534                                              MAC_REG_MAR0 + 4,
1535                                              (u32)(multicast >> 32));
1536
1537                                 MACvSelectPage0(priv->PortOffset);
1538                         }
1539
1540                         spin_unlock_irqrestore(&priv->lock, flags);
1541
1542                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1543                 } else {
1544                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1545                 }
1546         }
1547
1548         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1549                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1550
1551                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1552                         rx_mode &= ~RCR_BSSID;
1553                 else
1554                         rx_mode |= RCR_BSSID;
1555         }
1556
1557         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1558
1559         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1560 }
1561
1562 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1563         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1564                 struct ieee80211_key_conf *key)
1565 {
1566         struct vnt_private *priv = hw->priv;
1567
1568         switch (cmd) {
1569         case SET_KEY:
1570                 if (vnt_set_keys(hw, sta, vif, key))
1571                         return -EOPNOTSUPP;
1572                 break;
1573         case DISABLE_KEY:
1574                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1575                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1576         default:
1577                 break;
1578         }
1579
1580         return 0;
1581 }
1582
1583 static int vnt_get_stats(struct ieee80211_hw *hw,
1584                          struct ieee80211_low_level_stats *stats)
1585 {
1586         struct vnt_private *priv = hw->priv;
1587
1588         memcpy(stats, &priv->low_stats, sizeof(*stats));
1589
1590         return 0;
1591 }
1592
1593 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1594 {
1595         struct vnt_private *priv = hw->priv;
1596         u64 tsf;
1597
1598         CARDbGetCurrentTSF(priv, &tsf);
1599
1600         return tsf;
1601 }
1602
1603 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1604                         u64 tsf)
1605 {
1606         struct vnt_private *priv = hw->priv;
1607
1608         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1609 }
1610
1611 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1612 {
1613         struct vnt_private *priv = hw->priv;
1614
1615         /* reset TSF counter */
1616         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1617 }
1618
1619 static const struct ieee80211_ops vnt_mac_ops = {
1620         .tx                     = vnt_tx_80211,
1621         .start                  = vnt_start,
1622         .stop                   = vnt_stop,
1623         .add_interface          = vnt_add_interface,
1624         .remove_interface       = vnt_remove_interface,
1625         .config                 = vnt_config,
1626         .bss_info_changed       = vnt_bss_info_changed,
1627         .prepare_multicast      = vnt_prepare_multicast,
1628         .configure_filter       = vnt_configure,
1629         .set_key                = vnt_set_key,
1630         .get_stats              = vnt_get_stats,
1631         .get_tsf                = vnt_get_tsf,
1632         .set_tsf                = vnt_set_tsf,
1633         .reset_tsf              = vnt_reset_tsf,
1634 };
1635
1636 static int vnt_init(struct vnt_private *priv)
1637 {
1638         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1639
1640         vnt_init_bands(priv);
1641
1642         if (ieee80211_register_hw(priv->hw))
1643                 return -ENODEV;
1644
1645         priv->mac_hw = true;
1646
1647         CARDbRadioPowerOff(priv);
1648
1649         return 0;
1650 }
1651
1652 static int
1653 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1654 {
1655         PCHIP_INFO  pChip_info = (PCHIP_INFO)ent->driver_data;
1656         struct vnt_private *priv;
1657         struct ieee80211_hw *hw;
1658         struct wiphy *wiphy;
1659         int         rc;
1660
1661         dev_notice(&pcid->dev,
1662                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1663
1664         dev_notice(&pcid->dev,
1665                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1666
1667         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1668         if (!hw) {
1669                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1670                 return -ENOMEM;
1671         }
1672
1673         priv = hw->priv;
1674
1675         vt6655_init_info(pcid, &priv, pChip_info);
1676
1677         priv->hw = hw;
1678
1679         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1680
1681         if (pci_enable_device(pcid)) {
1682                 device_free_info(priv);
1683                 return -ENODEV;
1684         }
1685
1686         dev_dbg(&pcid->dev,
1687                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1688
1689         if (!device_get_pci_info(priv, pcid)) {
1690                 dev_err(&pcid->dev, ": Failed to find PCI device.\n");
1691                 device_free_info(priv);
1692                 return -ENODEV;
1693         }
1694
1695 #ifdef  DEBUG
1696         dev_dbg(&pcid->dev,
1697                 "after get pci_info memaddr is %x, io addr is %x,io_size is %d\n",
1698                 priv->memaddr, priv->ioaddr, priv->io_size);
1699         {
1700                 int i;
1701                 u32 bar, len;
1702                 u32 address[] = {
1703                         PCI_BASE_ADDRESS_0,
1704                         PCI_BASE_ADDRESS_1,
1705                         PCI_BASE_ADDRESS_2,
1706                         PCI_BASE_ADDRESS_3,
1707                         PCI_BASE_ADDRESS_4,
1708                         PCI_BASE_ADDRESS_5,
1709                         0};
1710                 for (i = 0; address[i]; i++) {
1711                         pci_read_config_dword(pcid, address[i], &bar);
1712
1713                         dev_dbg(&pcid->dev, "bar %d is %x\n", i, bar);
1714
1715                         if (!bar) {
1716                                 dev_dbg(&pcid->dev,
1717                                         "bar %d not implemented\n", i);
1718                                 continue;
1719                         }
1720
1721                         if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
1722                                 /* This is IO */
1723
1724                                 len = bar & (PCI_BASE_ADDRESS_IO_MASK & 0xffff);
1725                                 len = len & ~(len - 1);
1726
1727                                 dev_dbg(&pcid->dev,
1728                                         "IO space:  len in IO %x, BAR %d\n",
1729                                         len, i);
1730                         } else {
1731                                 len = bar & 0xfffffff0;
1732                                 len = ~len + 1;
1733
1734                                 dev_dbg(&pcid->dev,
1735                                         "len in MEM %x, BAR %d\n", len, i);
1736                         }
1737                 }
1738         }
1739 #endif
1740
1741         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1742                                    priv->io_size);
1743         if (!priv->PortOffset) {
1744                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1745                 device_free_info(priv);
1746                 return -ENODEV;
1747         }
1748
1749         rc = pci_request_regions(pcid, DEVICE_NAME);
1750         if (rc) {
1751                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1752                 device_free_info(priv);
1753                 return -ENODEV;
1754         }
1755
1756         if (dma_set_mask(&pcid->dev, DMA_BIT_MASK(32))) {
1757                 dev_err(&pcid->dev, ": Failed to set dma 32 bit mask\n");
1758                 device_free_info(priv);
1759                 return -ENODEV;
1760         }
1761
1762         INIT_WORK(&priv->interrupt_work, vnt_interrupt_work);
1763
1764         /* do reset */
1765         if (!MACbSoftwareReset(priv->PortOffset)) {
1766                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1767                 device_free_info(priv);
1768                 return -ENODEV;
1769         }
1770         /* initial to reload eeprom */
1771         MACvInitialize(priv->PortOffset);
1772         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1773
1774         /* Get RFType */
1775         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1776         priv->byRFType &= RF_MASK;
1777
1778         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1779
1780         device_get_options(priv);
1781         device_set_options(priv);
1782         /* Mask out the options cannot be set to the chip */
1783         priv->sOpts.flags &= pChip_info->flags;
1784
1785         /* Enable the chip specified capabilities */
1786         priv->flags = priv->sOpts.flags | (pChip_info->flags & 0xff000000UL);
1787
1788         wiphy = priv->hw->wiphy;
1789
1790         wiphy->frag_threshold = FRAG_THRESH_DEF;
1791         wiphy->rts_threshold = RTS_THRESH_DEF;
1792         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1793                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1794
1795         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1796         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1797         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1798         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1799         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1800
1801         priv->hw->max_signal = 100;
1802
1803         if (vnt_init(priv))
1804                 return -ENODEV;
1805
1806         device_print_info(priv);
1807         pci_set_drvdata(pcid, priv);
1808
1809         return 0;
1810 }
1811
1812 /*------------------------------------------------------------------*/
1813
1814 #ifdef CONFIG_PM
1815 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1816 {
1817         struct vnt_private *priv = pci_get_drvdata(pcid);
1818         unsigned long flags;
1819
1820         spin_lock_irqsave(&priv->lock, flags);
1821
1822         pci_save_state(pcid);
1823
1824         MACbShutdown(priv->PortOffset);
1825
1826         pci_disable_device(pcid);
1827         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1828
1829         spin_unlock_irqrestore(&priv->lock, flags);
1830
1831         return 0;
1832 }
1833
1834 static int vt6655_resume(struct pci_dev *pcid)
1835 {
1836
1837         pci_set_power_state(pcid, PCI_D0);
1838         pci_enable_wake(pcid, PCI_D0, 0);
1839         pci_restore_state(pcid);
1840
1841         return 0;
1842 }
1843 #endif
1844
1845 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1846
1847 static struct pci_driver device_driver = {
1848         .name = DEVICE_NAME,
1849         .id_table = vt6655_pci_id_table,
1850         .probe = vt6655_probe,
1851         .remove = vt6655_remove,
1852 #ifdef CONFIG_PM
1853         .suspend = vt6655_suspend,
1854         .resume = vt6655_resume,
1855 #endif
1856 };
1857
1858 module_pci_driver(device_driver);