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_intr - interrupt handle function
  36  *   device_rx_srv - rx service function
  37  *   device_alloc_rx_buf - rx buffer pre-allocated function
  38  *   device_free_tx_buf - free tx buffer function
  39  *   device_init_rd0_ring- initial rd dma0 ring
  40  *   device_init_rd1_ring- initial rd dma1 ring
  41  *   device_init_td0_ring- initial tx dma0 ring buffer
  42  *   device_init_td1_ring- initial tx dma1 ring buffer
  43  *   device_init_registers- initial MAC & BBP & RF internal registers.
  44  *   device_init_rings- initial tx/rx ring buffer
  45  *   device_free_rings- free all allocated ring buffer
  46  *   device_tx_srv- tx interrupt service function
  47  *
  48  * Revision History:
  49  */
  50 #undef __NO_VERSION__
  51
  52 #include <linux/file.h>
  53 #include "device.h"
  54 #include "card.h"
  55 #include "channel.h"
  56 #include "baseband.h"
  57 #include "mac.h"
  58 #include "power.h"
  59 #include "rxtx.h"
  60 #include "dpc.h"
  61 #include "rf.h"
  62 #include <linux/delay.h>
  63 #include <linux/kthread.h>
  64 #include <linux/slab.h>
  65
  66 /*---------------------  Static Definitions -------------------------*/
  67 //
  68 // Define module options
  69 //
  70 MODULE_AUTHOR("VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>");
  71 MODULE_LICENSE("GPL");
  72 MODULE_DESCRIPTION("VIA Networking Solomon-A/B/G Wireless LAN Adapter Driver");
  73
  74 #define DEVICE_PARAM(N, D)
  75
  76 #define RX_DESC_MIN0     16
  77 #define RX_DESC_MAX0     128
  78 #define RX_DESC_DEF0     32
  79 DEVICE_PARAM(RxDescriptors0, "Number of receive descriptors0");
  80
  81 #define RX_DESC_MIN1     16
  82 #define RX_DESC_MAX1     128
  83 #define RX_DESC_DEF1     32
  84 DEVICE_PARAM(RxDescriptors1, "Number of receive descriptors1");
  85
  86 #define TX_DESC_MIN0     16
  87 #define TX_DESC_MAX0     128
  88 #define TX_DESC_DEF0     32
  89 DEVICE_PARAM(TxDescriptors0, "Number of transmit descriptors0");
  90
  91 #define TX_DESC_MIN1     16
  92 #define TX_DESC_MAX1     128
  93 #define TX_DESC_DEF1     64
  94 DEVICE_PARAM(TxDescriptors1, "Number of transmit descriptors1");
  95
  96 #define INT_WORKS_DEF   20
  97 #define INT_WORKS_MIN   10
  98 #define INT_WORKS_MAX   64
  99
 100 DEVICE_PARAM(int_works, "Number of packets per interrupt services");
 101
 102 #define RTS_THRESH_DEF     2347
 103
 104 #define FRAG_THRESH_DEF     2346
 105
 106 #define SHORT_RETRY_MIN     0
 107 #define SHORT_RETRY_MAX     31
 108 #define SHORT_RETRY_DEF     8
 109
 110 DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");
 111
 112 #define LONG_RETRY_MIN     0
 113 #define LONG_RETRY_MAX     15
 114 #define LONG_RETRY_DEF     4
 115
 116 DEVICE_PARAM(LongRetryLimit, "long frame retry limits");
 117
 118 /* BasebandType[] baseband type selected
 119    0: indicate 802.11a type
 120    1: indicate 802.11b type
 121    2: indicate 802.11g type
 122 */
 123 #define BBP_TYPE_MIN     0
 124 #define BBP_TYPE_MAX     2
 125 #define BBP_TYPE_DEF     2
 126
 127 DEVICE_PARAM(BasebandType, "baseband type");
 128
 129 //
 130 // Static vars definitions
 131 //
 132 static CHIP_INFO chip_info_table[] = {
 133         { VT3253,       "VIA Networking Solomon-A/B/G Wireless LAN Adapter ",
 134           256, 1,     DEVICE_FLAGS_IP_ALIGN|DEVICE_FLAGS_TX_ALIGN },
 135         {0, NULL}
 136 };
 137
 138 static const struct pci_device_id vt6655_pci_id_table[] = {
 139         { PCI_VDEVICE(VIA, 0x3253), (kernel_ulong_t)chip_info_table},
 140         { 0, }
 141 };
 142
 143 /*---------------------  Static Functions  --------------------------*/
 144
 145 static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
 146 static void vt6655_init_info(struct pci_dev *pcid,
 147                              struct vnt_private **ppDevice, PCHIP_INFO);
 148 static void device_free_info(struct vnt_private *pDevice);
 149 static bool device_get_pci_info(struct vnt_private *, struct pci_dev *pcid);
 150 static void device_print_info(struct vnt_private *pDevice);
 151 static  irqreturn_t  device_intr(int irq,  void *dev_instance);
 152
 153 #ifdef CONFIG_PM
 154 static int device_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
 155 static struct notifier_block device_notifier = {
 156         .notifier_call = device_notify_reboot,
 157         .next = NULL,
 158         .priority = 0,
 159 };
 160 #endif
 161
 162 static void device_init_rd0_ring(struct vnt_private *pDevice);
 163 static void device_init_rd1_ring(struct vnt_private *pDevice);
 164 static void device_init_td0_ring(struct vnt_private *pDevice);
 165 static void device_init_td1_ring(struct vnt_private *pDevice);
 166
 167 static int  device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx);
 168 static int  device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx);
 169 static bool device_alloc_rx_buf(struct vnt_private *pDevice, PSRxDesc pDesc);
 170 static void device_init_registers(struct vnt_private *pDevice);
 171 static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc);
 172 static void device_free_td0_ring(struct vnt_private *pDevice);
 173 static void device_free_td1_ring(struct vnt_private *pDevice);
 174 static void device_free_rd0_ring(struct vnt_private *pDevice);
 175 static void device_free_rd1_ring(struct vnt_private *pDevice);
 176 static void device_free_rings(struct vnt_private *pDevice);
 177
 178 /*---------------------  Export Variables  --------------------------*/
 179
 180 /*---------------------  Export Functions  --------------------------*/
 181
 182 static char *get_chip_name(int chip_id)
 183 {
 184         int i;
 185
 186         for (i = 0; chip_info_table[i].name != NULL; i++)
 187                 if (chip_info_table[i].chip_id == chip_id)
 188                         break;
 189         return chip_info_table[i].name;
 190 }
 191
 192 static void vt6655_remove(struct pci_dev *pcid)
 193 {
 194         struct vnt_private *pDevice = pci_get_drvdata(pcid);
 195
 196         if (pDevice == NULL)
 197                 return;
 198         device_free_info(pDevice);
 199 }
 200
 201 static void device_get_options(struct vnt_private *pDevice)
 202 {
 203         POPTIONS pOpts = &(pDevice->sOpts);
 204
 205         pOpts->nRxDescs0 = RX_DESC_DEF0;
 206         pOpts->nRxDescs1 = RX_DESC_DEF1;
 207         pOpts->nTxDescs[0] = TX_DESC_DEF0;
 208         pOpts->nTxDescs[1] = TX_DESC_DEF1;
 209         pOpts->int_works = INT_WORKS_DEF;
 210
 211         pOpts->short_retry = SHORT_RETRY_DEF;
 212         pOpts->long_retry = LONG_RETRY_DEF;
 213         pOpts->bbp_type = BBP_TYPE_DEF;
 214 }
 215
 216 static void
 217 device_set_options(struct vnt_private *pDevice)
 218 {
 219         pDevice->byShortRetryLimit = pDevice->sOpts.short_retry;
 220         pDevice->byLongRetryLimit = pDevice->sOpts.long_retry;
 221         pDevice->byBBType = pDevice->sOpts.bbp_type;
 222         pDevice->byPacketType = pDevice->byBBType;
 223         pDevice->byAutoFBCtrl = AUTO_FB_0;
 224         pDevice->bUpdateBBVGA = true;
 225         pDevice->byPreambleType = 0;
 226
 227         pr_debug(" byShortRetryLimit= %d\n", (int)pDevice->byShortRetryLimit);
 228         pr_debug(" byLongRetryLimit= %d\n", (int)pDevice->byLongRetryLimit);
 229         pr_debug(" byPreambleType= %d\n", (int)pDevice->byPreambleType);
 230         pr_debug(" byShortPreamble= %d\n", (int)pDevice->byShortPreamble);
 231         pr_debug(" byBBType= %d\n", (int)pDevice->byBBType);
 232 }
 233
 234 //
 235 // Initialisation of MAC & BBP registers
 236 //
 237
 238 static void device_init_registers(struct vnt_private *pDevice)
 239 {
 240         unsigned long flags;
 241         unsigned int ii;
 242         unsigned char byValue;
 243         unsigned char byCCKPwrdBm = 0;
 244         unsigned char byOFDMPwrdBm = 0;
 245
 246         MACbShutdown(pDevice->PortOffset);
 247         BBvSoftwareReset(pDevice);
 248
 249         /* Do MACbSoftwareReset in MACvInitialize */
 250         MACbSoftwareReset(pDevice->PortOffset);
 251
 252         pDevice->bAES = false;
 253
 254         /* Only used in 11g type, sync with ERP IE */
 255         pDevice->bProtectMode = false;
 256
 257         pDevice->bNonERPPresent = false;
 258         pDevice->bBarkerPreambleMd = false;
 259         pDevice->wCurrentRate = RATE_1M;
 260         pDevice->byTopOFDMBasicRate = RATE_24M;
 261         pDevice->byTopCCKBasicRate = RATE_1M;
 262
 263         /* Target to IF pin while programming to RF chip. */
 264         pDevice->byRevId = 0;
 265
 266         /* init MAC */
 267         MACvInitialize(pDevice->PortOffset);
 268
 269         /* Get Local ID */
 270         VNSvInPortB(pDevice->PortOffset + MAC_REG_LOCALID, &pDevice->byLocalID);
 271
 272         spin_lock_irqsave(&pDevice->lock, flags);
 273
 274         SROMvReadAllContents(pDevice->PortOffset, pDevice->abyEEPROM);
 275
 276         spin_unlock_irqrestore(&pDevice->lock, flags);
 277
 278         /* Get Channel range */
 279         pDevice->byMinChannel = 1;
 280         pDevice->byMaxChannel = CB_MAX_CHANNEL;
 281
 282         /* Get Antena */
 283         byValue = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_ANTENNA);
 284         if (byValue & EEP_ANTINV)
 285                 pDevice->bTxRxAntInv = true;
 286         else
 287                 pDevice->bTxRxAntInv = false;
 288
 289         byValue &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 290         /* if not set default is All */
 291         if (byValue == 0)
 292                 byValue = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 293
 294         if (byValue == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 295                 pDevice->byAntennaCount = 2;
 296                 pDevice->byTxAntennaMode = ANT_B;
 297                 pDevice->dwTxAntennaSel = 1;
 298                 pDevice->dwRxAntennaSel = 1;
 299
 300                 if (pDevice->bTxRxAntInv)
 301                         pDevice->byRxAntennaMode = ANT_A;
 302                 else
 303                         pDevice->byRxAntennaMode = ANT_B;
 304         } else  {
 305                 pDevice->byAntennaCount = 1;
 306                 pDevice->dwTxAntennaSel = 0;
 307                 pDevice->dwRxAntennaSel = 0;
 308
 309                 if (byValue & EEP_ANTENNA_AUX) {
 310                         pDevice->byTxAntennaMode = ANT_A;
 311
 312                         if (pDevice->bTxRxAntInv)
 313                                 pDevice->byRxAntennaMode = ANT_B;
 314                         else
 315                                 pDevice->byRxAntennaMode = ANT_A;
 316                 } else {
 317                         pDevice->byTxAntennaMode = ANT_B;
 318
 319                         if (pDevice->bTxRxAntInv)
 320                                 pDevice->byRxAntennaMode = ANT_A;
 321                         else
 322                                 pDevice->byRxAntennaMode = ANT_B;
 323                 }
 324         }
 325
 326         /* Set initial antenna mode */
 327         BBvSetTxAntennaMode(pDevice, pDevice->byTxAntennaMode);
 328         BBvSetRxAntennaMode(pDevice, pDevice->byRxAntennaMode);
 329
 330         /* zonetype initial */
 331         pDevice->byOriginalZonetype = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 332
 333         /* Get RFType */
 334         pDevice->byRFType = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_RFTYPE);
 335
 336         /* force change RevID for VT3253 emu */
 337         if ((pDevice->byRFType & RF_EMU) != 0)
 338                         pDevice->byRevId = 0x80;
 339
 340         pDevice->byRFType &= RF_MASK;
 341         pr_debug("pDevice->byRFType = %x\n", pDevice->byRFType);
 342
 343         if (!pDevice->bZoneRegExist)
 344                 pDevice->byZoneType = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 345
 346         pr_debug("pDevice->byZoneType = %x\n", pDevice->byZoneType);
 347
 348         /* Init RF module */
 349         RFbInit(pDevice);
 350
 351         /* Get Desire Power Value */
 352         pDevice->byCurPwr = 0xFF;
 353         pDevice->byCCKPwr = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_CCK);
 354         pDevice->byOFDMPwrG = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_OFDMG);
 355
 356         /* Load power Table */
 357         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 358                 pDevice->abyCCKPwrTbl[ii + 1] =
 359                         SROMbyReadEmbedded(pDevice->PortOffset,
 360                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 361                 if (pDevice->abyCCKPwrTbl[ii + 1] == 0)
 362                         pDevice->abyCCKPwrTbl[ii+1] = pDevice->byCCKPwr;
 363
 364                 pDevice->abyOFDMPwrTbl[ii + 1] =
 365                         SROMbyReadEmbedded(pDevice->PortOffset,
 366                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 367                 if (pDevice->abyOFDMPwrTbl[ii + 1] == 0)
 368                         pDevice->abyOFDMPwrTbl[ii + 1] = pDevice->byOFDMPwrG;
 369
 370                 pDevice->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 371                 pDevice->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 372         }
 373
 374         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 375         for (ii = 11; ii < 14; ii++) {
 376                 pDevice->abyCCKPwrTbl[ii] = pDevice->abyCCKPwrTbl[10];
 377                 pDevice->abyOFDMPwrTbl[ii] = pDevice->abyOFDMPwrTbl[10];
 378         }
 379
 380         /* Load OFDM A Power Table */
 381         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 382                 pDevice->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 383                         SROMbyReadEmbedded(pDevice->PortOffset,
 384                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 385
 386                 pDevice->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 387                         SROMbyReadEmbedded(pDevice->PortOffset,
 388                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 389         }
 390
 391         if (pDevice->byLocalID > REV_ID_VT3253_B1) {
 392                 MACvSelectPage1(pDevice->PortOffset);
 393
 394                 VNSvOutPortB(pDevice->PortOffset + MAC_REG_MSRCTL + 1,
 395                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 396
 397                 MACvSelectPage0(pDevice->PortOffset);
 398         }
 399
 400         /* use relative tx timeout and 802.11i D4 */
 401         MACvWordRegBitsOn(pDevice->PortOffset,
 402                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 403
 404         /* set performance parameter by registry */
 405         MACvSetShortRetryLimit(pDevice->PortOffset, pDevice->byShortRetryLimit);
 406         MACvSetLongRetryLimit(pDevice->PortOffset, pDevice->byLongRetryLimit);
 407
 408         /* reset TSF counter */
 409         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 410         /* enable TSF counter */
 411         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 412
 413         /* initialize BBP registers */
 414         BBbVT3253Init(pDevice);
 415
 416         if (pDevice->bUpdateBBVGA) {
 417                 pDevice->byBBVGACurrent = pDevice->abyBBVGA[0];
 418                 pDevice->byBBVGANew = pDevice->byBBVGACurrent;
 419                 BBvSetVGAGainOffset(pDevice, pDevice->abyBBVGA[0]);
 420         }
 421
 422         BBvSetRxAntennaMode(pDevice, pDevice->byRxAntennaMode);
 423         BBvSetTxAntennaMode(pDevice, pDevice->byTxAntennaMode);
 424
 425         /* Set BB and packet type at the same time. */
 426         /* Set Short Slot Time, xIFS, and RSPINF. */
 427         pDevice->wCurrentRate = RATE_54M;
 428
 429         pDevice->bRadioOff = false;
 430
 431         pDevice->byRadioCtl = SROMbyReadEmbedded(pDevice->PortOffset,
 432                                                  EEP_OFS_RADIOCTL);
 433         pDevice->bHWRadioOff = false;
 434
 435         if (pDevice->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 436                 /* Get GPIO */
 437                 MACvGPIOIn(pDevice->PortOffset, &pDevice->byGPIO);
 438
 439                 if (((pDevice->byGPIO & GPIO0_DATA) &&
 440                      !(pDevice->byRadioCtl & EEP_RADIOCTL_INV)) ||
 441                      (!(pDevice->byGPIO & GPIO0_DATA) &&
 442                      (pDevice->byRadioCtl & EEP_RADIOCTL_INV)))
 443                         pDevice->bHWRadioOff = true;
 444         }
 445
 446         if (pDevice->bHWRadioOff || pDevice->bRadioControlOff)
 447                 CARDbRadioPowerOff(pDevice);
 448
 449         /* get Permanent network address */
 450         SROMvReadEtherAddress(pDevice->PortOffset, pDevice->abyCurrentNetAddr);
 451         pr_debug("Network address = %pM\n", pDevice->abyCurrentNetAddr);
 452
 453         /* reset Tx pointer */
 454         CARDvSafeResetRx(pDevice);
 455         /* reset Rx pointer */
 456         CARDvSafeResetTx(pDevice);
 457
 458         if (pDevice->byLocalID <= REV_ID_VT3253_A1)
 459                 MACvRegBitsOn(pDevice->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 460
 461         /* Turn On Rx DMA */
 462         MACvReceive0(pDevice->PortOffset);
 463         MACvReceive1(pDevice->PortOffset);
 464
 465         /* start the adapter */
 466         MACvStart(pDevice->PortOffset);
 467 }
 468
 469 static void device_print_info(struct vnt_private *pDevice)
 470 {
 471         dev_info(&pDevice->pcid->dev, "%s\n", get_chip_name(pDevice->chip_id));
 472
 473         dev_info(&pDevice->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 474                  pDevice->abyCurrentNetAddr, (unsigned long)pDevice->ioaddr,
 475                  (unsigned long)pDevice->PortOffset, pDevice->pcid->irq);
 476 }
 477
 478 static void vt6655_init_info(struct pci_dev *pcid,
 479                              struct vnt_private **ppDevice,
 480                              PCHIP_INFO pChip_info)
 481 {
 482         memset(*ppDevice, 0, sizeof(**ppDevice));
 483
 484         (*ppDevice)->pcid = pcid;
 485         (*ppDevice)->chip_id = pChip_info->chip_id;
 486         (*ppDevice)->io_size = pChip_info->io_size;
 487         (*ppDevice)->nTxQueues = pChip_info->nTxQueue;
 488         (*ppDevice)->multicast_limit = 32;
 489
 490         spin_lock_init(&((*ppDevice)->lock));
 491 }
 492
 493 static bool device_get_pci_info(struct vnt_private *pDevice,
 494                                 struct pci_dev *pcid)
 495 {
 496         u16 pci_cmd;
 497         u8  b;
 498         unsigned int cis_addr;
 499
 500         pci_read_config_byte(pcid, PCI_REVISION_ID, &pDevice->byRevId);
 501         pci_read_config_word(pcid, PCI_SUBSYSTEM_ID, &pDevice->SubSystemID);
 502         pci_read_config_word(pcid, PCI_SUBSYSTEM_VENDOR_ID, &pDevice->SubVendorID);
 503         pci_read_config_word(pcid, PCI_COMMAND, (u16 *)&(pci_cmd));
 504
 505         pci_set_master(pcid);
 506
 507         pDevice->memaddr = pci_resource_start(pcid, 0);
 508         pDevice->ioaddr = pci_resource_start(pcid, 1);
 509
 510         cis_addr = pci_resource_start(pcid, 2);
 511
 512         pDevice->pcid = pcid;
 513
 514         pci_read_config_byte(pcid, PCI_COMMAND, &b);
 515         pci_write_config_byte(pcid, PCI_COMMAND, (b|PCI_COMMAND_MASTER));
 516
 517         return true;
 518 }
 519
 520 static void device_free_info(struct vnt_private *pDevice)
 521 {
 522         if (!pDevice)
 523                 return;
 524
 525         if (pDevice->mac_hw)
 526                 ieee80211_unregister_hw(pDevice->hw);
 527
 528         if (pDevice->PortOffset)
 529                 iounmap(pDevice->PortOffset);
 530
 531         if (pDevice->pcid)
 532                 pci_release_regions(pDevice->pcid);
 533
 534         if (pDevice->hw)
 535                 ieee80211_free_hw(pDevice->hw);
 536 }
 537
 538 static bool device_init_rings(struct vnt_private *pDevice)
 539 {
 540         void *vir_pool;
 541
 542         /*allocate all RD/TD rings a single pool*/
 543         vir_pool = pci_zalloc_consistent(pDevice->pcid,
 544                                          pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 545                                          pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 546                                          pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 547                                          pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc),
 548                                          &pDevice->pool_dma);
 549         if (vir_pool == NULL) {
 550                 dev_err(&pDevice->pcid->dev, "allocate desc dma memory failed\n");
 551                 return false;
 552         }
 553
 554         pDevice->aRD0Ring = vir_pool;
 555         pDevice->aRD1Ring = vir_pool +
 556                 pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc);
 557
 558         pDevice->rd0_pool_dma = pDevice->pool_dma;
 559         pDevice->rd1_pool_dma = pDevice->rd0_pool_dma +
 560                 pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc);
 561
 562         pDevice->tx0_bufs = pci_zalloc_consistent(pDevice->pcid,
 563                                                   pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 564                                                   pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 565                                                   CB_BEACON_BUF_SIZE +
 566                                                   CB_MAX_BUF_SIZE,
 567                                                   &pDevice->tx_bufs_dma0);
 568         if (pDevice->tx0_bufs == NULL) {
 569                 dev_err(&pDevice->pcid->dev, "allocate buf dma memory failed\n");
 570
 571                 pci_free_consistent(pDevice->pcid,
 572                                     pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 573                                     pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 574                                     pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 575                                     pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc),
 576                                     vir_pool, pDevice->pool_dma
 577                         );
 578                 return false;
 579         }
 580
 581         pDevice->td0_pool_dma = pDevice->rd1_pool_dma +
 582                 pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc);
 583
 584         pDevice->td1_pool_dma = pDevice->td0_pool_dma +
 585                 pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc);
 586
 587         // vir_pool: pvoid type
 588         pDevice->apTD0Rings = vir_pool
 589                 + pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc)
 590                 + pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc);
 591
 592         pDevice->apTD1Rings = vir_pool
 593                 + pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc)
 594                 + pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc)
 595                 + pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc);
 596
 597         pDevice->tx1_bufs = pDevice->tx0_bufs +
 598                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 599
 600         pDevice->tx_beacon_bufs = pDevice->tx1_bufs +
 601                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 602
 603         pDevice->pbyTmpBuff = pDevice->tx_beacon_bufs +
 604                 CB_BEACON_BUF_SIZE;
 605
 606         pDevice->tx_bufs_dma1 = pDevice->tx_bufs_dma0 +
 607                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 608
 609         pDevice->tx_beacon_dma = pDevice->tx_bufs_dma1 +
 610                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 611
 612         return true;
 613 }
 614
 615 static void device_free_rings(struct vnt_private *pDevice)
 616 {
 617         pci_free_consistent(pDevice->pcid,
 618                             pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 619                             pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 620                             pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 621                             pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc)
 622                             ,
 623                             pDevice->aRD0Ring, pDevice->pool_dma
 624                 );
 625
 626         if (pDevice->tx0_bufs)
 627                 pci_free_consistent(pDevice->pcid,
 628                                     pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 629                                     pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 630                                     CB_BEACON_BUF_SIZE +
 631                                     CB_MAX_BUF_SIZE,
 632                                     pDevice->tx0_bufs, pDevice->tx_bufs_dma0
 633                         );
 634 }
 635
 636 static void device_init_rd0_ring(struct vnt_private *pDevice)
 637 {
 638         int i;
 639         dma_addr_t      curr = pDevice->rd0_pool_dma;
 640         PSRxDesc        pDesc;
 641
 642         /* Init the RD0 ring entries */
 643         for (i = 0; i < pDevice->sOpts.nRxDescs0; i ++, curr += sizeof(SRxDesc)) {
 644                 pDesc = &(pDevice->aRD0Ring[i]);
 645                 pDesc->pRDInfo = alloc_rd_info();
 646                 ASSERT(pDesc->pRDInfo);
 647                 if (!device_alloc_rx_buf(pDevice, pDesc))
 648                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 649
 650                 pDesc->next = &(pDevice->aRD0Ring[(i+1) % pDevice->sOpts.nRxDescs0]);
 651                 pDesc->pRDInfo->curr_desc = cpu_to_le32(curr);
 652                 pDesc->next_desc = cpu_to_le32(curr + sizeof(SRxDesc));
 653         }
 654
 655         if (i > 0)
 656                 pDevice->aRD0Ring[i-1].next_desc = cpu_to_le32(pDevice->rd0_pool_dma);
 657         pDevice->pCurrRD[0] = &(pDevice->aRD0Ring[0]);
 658 }
 659
 660 static void device_init_rd1_ring(struct vnt_private *pDevice)
 661 {
 662         int i;
 663         dma_addr_t      curr = pDevice->rd1_pool_dma;
 664         PSRxDesc        pDesc;
 665
 666         /* Init the RD1 ring entries */
 667         for (i = 0; i < pDevice->sOpts.nRxDescs1; i ++, curr += sizeof(SRxDesc)) {
 668                 pDesc = &(pDevice->aRD1Ring[i]);
 669                 pDesc->pRDInfo = alloc_rd_info();
 670                 ASSERT(pDesc->pRDInfo);
 671                 if (!device_alloc_rx_buf(pDevice, pDesc))
 672                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 673
 674                 pDesc->next = &(pDevice->aRD1Ring[(i+1) % pDevice->sOpts.nRxDescs1]);
 675                 pDesc->pRDInfo->curr_desc = cpu_to_le32(curr);
 676                 pDesc->next_desc = cpu_to_le32(curr + sizeof(SRxDesc));
 677         }
 678
 679         if (i > 0)
 680                 pDevice->aRD1Ring[i-1].next_desc = cpu_to_le32(pDevice->rd1_pool_dma);
 681         pDevice->pCurrRD[1] = &(pDevice->aRD1Ring[0]);
 682 }
 683
 684 static void device_free_rd0_ring(struct vnt_private *pDevice)
 685 {
 686         int i;
 687
 688         for (i = 0; i < pDevice->sOpts.nRxDescs0; i++) {
 689                 PSRxDesc        pDesc = &(pDevice->aRD0Ring[i]);
 690                 PDEVICE_RD_INFO  pRDInfo = pDesc->pRDInfo;
 691
 692                 pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 693                                  pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 694
 695                 dev_kfree_skb(pRDInfo->skb);
 696
 697                 kfree(pDesc->pRDInfo);
 698         }
 699 }
 700
 701 static void device_free_rd1_ring(struct vnt_private *pDevice)
 702 {
 703         int i;
 704
 705         for (i = 0; i < pDevice->sOpts.nRxDescs1; i++) {
 706                 PSRxDesc        pDesc = &(pDevice->aRD1Ring[i]);
 707                 PDEVICE_RD_INFO  pRDInfo = pDesc->pRDInfo;
 708
 709                 pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 710                                  pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 711
 712                 dev_kfree_skb(pRDInfo->skb);
 713
 714                 kfree(pDesc->pRDInfo);
 715         }
 716 }
 717
 718 static void device_init_td0_ring(struct vnt_private *pDevice)
 719 {
 720         int i;
 721         dma_addr_t  curr;
 722         PSTxDesc        pDesc;
 723
 724         curr = pDevice->td0_pool_dma;
 725         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++, curr += sizeof(STxDesc)) {
 726                 pDesc = &(pDevice->apTD0Rings[i]);
 727                 pDesc->pTDInfo = alloc_td_info();
 728                 ASSERT(pDesc->pTDInfo);
 729                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 730                         pDesc->pTDInfo->buf = pDevice->tx0_bufs + (i)*PKT_BUF_SZ;
 731                         pDesc->pTDInfo->buf_dma = pDevice->tx_bufs_dma0 + (i)*PKT_BUF_SZ;
 732                 }
 733                 pDesc->next = &(pDevice->apTD0Rings[(i+1) % pDevice->sOpts.nTxDescs[0]]);
 734                 pDesc->pTDInfo->curr_desc = cpu_to_le32(curr);
 735                 pDesc->next_desc = cpu_to_le32(curr+sizeof(STxDesc));
 736         }
 737
 738         if (i > 0)
 739                 pDevice->apTD0Rings[i-1].next_desc = cpu_to_le32(pDevice->td0_pool_dma);
 740         pDevice->apTailTD[0] = pDevice->apCurrTD[0] = &(pDevice->apTD0Rings[0]);
 741 }
 742
 743 static void device_init_td1_ring(struct vnt_private *pDevice)
 744 {
 745         int i;
 746         dma_addr_t  curr;
 747         PSTxDesc    pDesc;
 748
 749         /* Init the TD ring entries */
 750         curr = pDevice->td1_pool_dma;
 751         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++, curr += sizeof(STxDesc)) {
 752                 pDesc = &(pDevice->apTD1Rings[i]);
 753                 pDesc->pTDInfo = alloc_td_info();
 754                 ASSERT(pDesc->pTDInfo);
 755                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 756                         pDesc->pTDInfo->buf = pDevice->tx1_bufs + (i) * PKT_BUF_SZ;
 757                         pDesc->pTDInfo->buf_dma = pDevice->tx_bufs_dma1 + (i) * PKT_BUF_SZ;
 758                 }
 759                 pDesc->next = &(pDevice->apTD1Rings[(i + 1) % pDevice->sOpts.nTxDescs[1]]);
 760                 pDesc->pTDInfo->curr_desc = cpu_to_le32(curr);
 761                 pDesc->next_desc = cpu_to_le32(curr+sizeof(STxDesc));
 762         }
 763
 764         if (i > 0)
 765                 pDevice->apTD1Rings[i-1].next_desc = cpu_to_le32(pDevice->td1_pool_dma);
 766         pDevice->apTailTD[1] = pDevice->apCurrTD[1] = &(pDevice->apTD1Rings[0]);
 767 }
 768
 769 static void device_free_td0_ring(struct vnt_private *pDevice)
 770 {
 771         int i;
 772
 773         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++) {
 774                 PSTxDesc        pDesc = &(pDevice->apTD0Rings[i]);
 775                 PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 776
 777                 if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
 778                         pci_unmap_single(pDevice->pcid, pTDInfo->skb_dma,
 779                                          pTDInfo->skb->len, PCI_DMA_TODEVICE);
 780
 781                 if (pTDInfo->skb)
 782                         dev_kfree_skb(pTDInfo->skb);
 783
 784                 kfree(pDesc->pTDInfo);
 785         }
 786 }
 787
 788 static void device_free_td1_ring(struct vnt_private *pDevice)
 789 {
 790         int i;
 791
 792         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++) {
 793                 PSTxDesc        pDesc = &(pDevice->apTD1Rings[i]);
 794                 PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 795
 796                 if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
 797                         pci_unmap_single(pDevice->pcid, pTDInfo->skb_dma,
 798                                          pTDInfo->skb->len, PCI_DMA_TODEVICE);
 799
 800                 if (pTDInfo->skb)
 801                         dev_kfree_skb(pTDInfo->skb);
 802
 803                 kfree(pDesc->pTDInfo);
 804         }
 805 }
 806
 807 /*-----------------------------------------------------------------*/
 808
 809 static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 810 {
 811         PSRxDesc    pRD;
 812         int works = 0;
 813
 814         for (pRD = pDevice->pCurrRD[uIdx];
 815              pRD->m_rd0RD0.f1Owner == OWNED_BY_HOST;
 816              pRD = pRD->next) {
 817                 if (works++ > 15)
 818                         break;
 819                 if (vnt_receive_frame(pDevice, pRD)) {
 820                         if (!device_alloc_rx_buf(pDevice, pRD)) {
 821                                 dev_err(&pDevice->pcid->dev,
 822                                         "can not allocate rx buf\n");
 823                                 break;
 824                         }
 825                 }
 826                 pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 827         }
 828
 829         pDevice->pCurrRD[uIdx] = pRD;
 830
 831         return works;
 832 }
 833
 834 static bool device_alloc_rx_buf(struct vnt_private *pDevice, PSRxDesc pRD)
 835 {
 836         PDEVICE_RD_INFO pRDInfo = pRD->pRDInfo;
 837
 838         pRDInfo->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 839         if (pRDInfo->skb == NULL)
 840                 return false;
 841         ASSERT(pRDInfo->skb);
 842
 843         pRDInfo->skb_dma =
 844                 pci_map_single(pDevice->pcid,
 845                                skb_put(pRDInfo->skb, skb_tailroom(pRDInfo->skb)),
 846                                pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 847
 848         *((unsigned int *)&(pRD->m_rd0RD0)) = 0; /* FIX cast */
 849
 850         pRD->m_rd0RD0.wResCount = cpu_to_le16(pDevice->rx_buf_sz);
 851         pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 852         pRD->m_rd1RD1.wReqCount = cpu_to_le16(pDevice->rx_buf_sz);
 853         pRD->buff_addr = cpu_to_le32(pRDInfo->skb_dma);
 854
 855         return true;
 856 }
 857
 858 static const u8 fallback_rate0[5][5] = {
 859         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 860         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 861         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 862         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 863         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 864 };
 865
 866 static const u8 fallback_rate1[5][5] = {
 867         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 868         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 869         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 870         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 871         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 872 };
 873
 874 static int vnt_int_report_rate(struct vnt_private *priv,
 875                                PDEVICE_TD_INFO context, u8 tsr0, u8 tsr1)
 876 {
 877         struct vnt_tx_fifo_head *fifo_head;
 878         struct ieee80211_tx_info *info;
 879         struct ieee80211_rate *rate;
 880         u16 fb_option;
 881         u8 tx_retry = (tsr0 & TSR0_NCR);
 882         s8 idx;
 883
 884         if (!context)
 885                 return -ENOMEM;
 886
 887         if (!context->skb)
 888                 return -EINVAL;
 889
 890         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 891         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 892                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 893
 894         info = IEEE80211_SKB_CB(context->skb);
 895         idx = info->control.rates[0].idx;
 896
 897         if (fb_option && !(tsr1 & TSR1_TERR)) {
 898                 u8 tx_rate;
 899                 u8 retry = tx_retry;
 900
 901                 rate = ieee80211_get_tx_rate(priv->hw, info);
 902                 tx_rate = rate->hw_value - RATE_18M;
 903
 904                 if (retry > 4)
 905                         retry = 4;
 906
 907                 if (fb_option & FIFOCTL_AUTO_FB_0)
 908                         tx_rate = fallback_rate0[tx_rate][retry];
 909                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 910                         tx_rate = fallback_rate1[tx_rate][retry];
 911
 912                 if (info->band == IEEE80211_BAND_5GHZ)
 913                         idx = tx_rate - RATE_6M;
 914                 else
 915                         idx = tx_rate;
 916         }
 917
 918         ieee80211_tx_info_clear_status(info);
 919
 920         info->status.rates[0].count = tx_retry;
 921
 922         if (!(tsr1 & TSR1_TERR)) {
 923                 info->status.rates[0].idx = idx;
 924                 info->flags |= IEEE80211_TX_STAT_ACK;
 925         }
 926
 927         return 0;
 928 }
 929
 930 static int device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 931 {
 932         PSTxDesc                 pTD;
 933         int                      works = 0;
 934         unsigned char byTsr0;
 935         unsigned char byTsr1;
 936
 937         for (pTD = pDevice->apTailTD[uIdx]; pDevice->iTDUsed[uIdx] > 0; pTD = pTD->next) {
 938                 if (pTD->m_td0TD0.f1Owner == OWNED_BY_NIC)
 939                         break;
 940                 if (works++ > 15)
 941                         break;
 942
 943                 byTsr0 = pTD->m_td0TD0.byTSR0;
 944                 byTsr1 = pTD->m_td0TD0.byTSR1;
 945
 946                 //Only the status of first TD in the chain is correct
 947                 if (pTD->m_td1TD1.byTCR & TCR_STP) {
 948                         if ((pTD->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB) != 0) {
 949
 950                                 vnt_int_report_rate(pDevice, pTD->pTDInfo, byTsr0, byTsr1);
 951
 952                                 if (!(byTsr1 & TSR1_TERR)) {
 953                                         if (byTsr0 != 0) {
 954                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 955                                                          (int)uIdx, byTsr1,
 956                                                          byTsr0);
 957                                         }
 958                                 } else {
 959                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 960                                                  (int)uIdx, byTsr1, byTsr0);
 961                                 }
 962                         }
 963
 964                         if (byTsr1 & TSR1_TERR) {
 965                                 if ((pTD->pTDInfo->byFlags & TD_FLAGS_PRIV_SKB) != 0) {
 966                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 967                                                  (int)uIdx, byTsr1, byTsr0);
 968                                 }
 969                         }
 970                         device_free_tx_buf(pDevice, pTD);
 971                         pDevice->iTDUsed[uIdx]--;
 972                 }
 973         }
 974
 975         pDevice->apTailTD[uIdx] = pTD;
 976
 977         return works;
 978 }
 979
 980 static void device_error(struct vnt_private *pDevice, unsigned short status)
 981 {
 982         if (status & ISR_FETALERR) {
 983                 dev_err(&pDevice->pcid->dev, "Hardware fatal error\n");
 984
 985                 MACbShutdown(pDevice->PortOffset);
 986                 return;
 987         }
 988 }
 989
 990 static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc)
 991 {
 992         PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 993         struct sk_buff *skb = pTDInfo->skb;
 994
 995         // pre-allocated buf_dma can't be unmapped.
 996         if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma)) {
 997                 pci_unmap_single(pDevice->pcid, pTDInfo->skb_dma, skb->len,
 998                                  PCI_DMA_TODEVICE);
 999         }
1000
1001         if (pTDInfo->byFlags & TD_FLAGS_NETIF_SKB)
1002                 ieee80211_tx_status_irqsafe(pDevice->hw, skb);
1003         else
1004                 dev_kfree_skb_irq(skb);
1005
1006         pTDInfo->skb_dma = 0;
1007         pTDInfo->skb = NULL;
1008         pTDInfo->byFlags = 0;
1009 }
1010
1011 static void vnt_check_bb_vga(struct vnt_private *priv)
1012 {
1013         long dbm;
1014         int i;
1015
1016         if (!priv->bUpdateBBVGA)
1017                 return;
1018
1019         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1020                 return;
1021
1022         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
1023                 return;
1024
1025         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
1026
1027         for (i = 0; i < BB_VGA_LEVEL; i++) {
1028                 if (dbm < priv->ldBmThreshold[i]) {
1029                         priv->byBBVGANew = priv->abyBBVGA[i];
1030                         break;
1031                 }
1032         }
1033
1034         if (priv->byBBVGANew == priv->byBBVGACurrent) {
1035                 priv->uBBVGADiffCount = 1;
1036                 return;
1037         }
1038
1039         priv->uBBVGADiffCount++;
1040
1041         if (priv->uBBVGADiffCount == 1) {
1042                 /* first VGA diff gain */
1043                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1044
1045                 dev_dbg(&priv->pcid->dev,
1046                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1047                         (int)dbm, priv->byBBVGANew,
1048                         priv->byBBVGACurrent,
1049                         (int)priv->uBBVGADiffCount);
1050         }
1051
1052         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1053                 dev_dbg(&priv->pcid->dev,
1054                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1055                         (int)dbm, priv->byBBVGANew,
1056                         priv->byBBVGACurrent,
1057                         (int)priv->uBBVGADiffCount);
1058
1059                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1060         }
1061 }
1062
1063 static  irqreturn_t  device_intr(int irq,  void *dev_instance)
1064 {
1065         struct vnt_private *pDevice = dev_instance;
1066         int             max_count = 0;
1067         unsigned long dwMIBCounter = 0;
1068         unsigned char byOrgPageSel = 0;
1069         int             handled = 0;
1070         unsigned long flags;
1071
1072         MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1073
1074         if (pDevice->dwIsr == 0)
1075                 return IRQ_RETVAL(handled);
1076
1077         if (pDevice->dwIsr == 0xffffffff) {
1078                 pr_debug("dwIsr = 0xffff\n");
1079                 return IRQ_RETVAL(handled);
1080         }
1081
1082         handled = 1;
1083         MACvIntDisable(pDevice->PortOffset);
1084
1085         spin_lock_irqsave(&pDevice->lock, flags);
1086
1087         //Make sure current page is 0
1088         VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
1089         if (byOrgPageSel == 1)
1090                 MACvSelectPage0(pDevice->PortOffset);
1091         else
1092                 byOrgPageSel = 0;
1093
1094         MACvReadMIBCounter(pDevice->PortOffset, &dwMIBCounter);
1095         // TBD....
1096         // Must do this after doing rx/tx, cause ISR bit is slow
1097         // than RD/TD write back
1098         // update ISR counter
1099         STAvUpdate802_11Counter(&pDevice->s802_11Counter, &pDevice->scStatistic, dwMIBCounter);
1100         while (pDevice->dwIsr != 0) {
1101                 STAvUpdateIsrStatCounter(&pDevice->scStatistic, pDevice->dwIsr);
1102                 MACvWriteISR(pDevice->PortOffset, pDevice->dwIsr);
1103
1104                 if (pDevice->dwIsr & ISR_FETALERR) {
1105                         pr_debug(" ISR_FETALERR\n");
1106                         VNSvOutPortB(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1107                         VNSvOutPortW(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1108                         device_error(pDevice, pDevice->dwIsr);
1109                 }
1110
1111                 if (pDevice->dwIsr & ISR_TBTT) {
1112                         if (pDevice->vif &&
1113                             pDevice->op_mode != NL80211_IFTYPE_ADHOC)
1114                                 vnt_check_bb_vga(pDevice);
1115
1116                         pDevice->bBeaconSent = false;
1117                         if (pDevice->bEnablePSMode)
1118                                 PSbIsNextTBTTWakeUp((void *)pDevice);
1119
1120                         if ((pDevice->op_mode == NL80211_IFTYPE_AP ||
1121                             pDevice->op_mode == NL80211_IFTYPE_ADHOC) &&
1122                             pDevice->vif->bss_conf.enable_beacon) {
1123                                 MACvOneShotTimer1MicroSec(pDevice->PortOffset,
1124                                                           (pDevice->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1125                         }
1126
1127                         /* TODO: adhoc PS mode */
1128
1129                 }
1130
1131                 if (pDevice->dwIsr & ISR_BNTX) {
1132                         if (pDevice->op_mode == NL80211_IFTYPE_ADHOC) {
1133                                 pDevice->bIsBeaconBufReadySet = false;
1134                                 pDevice->cbBeaconBufReadySetCnt = 0;
1135                         }
1136
1137                         pDevice->bBeaconSent = true;
1138                 }
1139
1140                 if (pDevice->dwIsr & ISR_RXDMA0)
1141                         max_count += device_rx_srv(pDevice, TYPE_RXDMA0);
1142
1143                 if (pDevice->dwIsr & ISR_RXDMA1)
1144                         max_count += device_rx_srv(pDevice, TYPE_RXDMA1);
1145
1146                 if (pDevice->dwIsr & ISR_TXDMA0)
1147                         max_count += device_tx_srv(pDevice, TYPE_TXDMA0);
1148
1149                 if (pDevice->dwIsr & ISR_AC0DMA)
1150                         max_count += device_tx_srv(pDevice, TYPE_AC0DMA);
1151
1152                 if (pDevice->dwIsr & ISR_SOFTTIMER1) {
1153                         if (pDevice->vif) {
1154                                 if (pDevice->vif->bss_conf.enable_beacon)
1155                                         vnt_beacon_make(pDevice, pDevice->vif);
1156                         }
1157                 }
1158
1159                 /* If both buffers available wake the queue */
1160                 if (pDevice->vif) {
1161                         if (AVAIL_TD(pDevice, TYPE_TXDMA0) &&
1162                             AVAIL_TD(pDevice, TYPE_AC0DMA) &&
1163                             ieee80211_queue_stopped(pDevice->hw, 0))
1164                                 ieee80211_wake_queues(pDevice->hw);
1165                 }
1166
1167                 MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1168
1169                 MACvReceive0(pDevice->PortOffset);
1170                 MACvReceive1(pDevice->PortOffset);
1171
1172                 if (max_count > pDevice->sOpts.int_works)
1173                         break;
1174         }
1175
1176         if (byOrgPageSel == 1)
1177                 MACvSelectPage1(pDevice->PortOffset);
1178
1179         spin_unlock_irqrestore(&pDevice->lock, flags);
1180
1181         MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
1182
1183         return IRQ_RETVAL(handled);
1184 }
1185
1186 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1187 {
1188         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1189         PSTxDesc head_td;
1190         u32 dma_idx = TYPE_AC0DMA;
1191         unsigned long flags;
1192
1193         spin_lock_irqsave(&priv->lock, flags);
1194
1195         if (!ieee80211_is_data(hdr->frame_control))
1196                 dma_idx = TYPE_TXDMA0;
1197
1198         if (AVAIL_TD(priv, dma_idx) < 1) {
1199                 spin_unlock_irqrestore(&priv->lock, flags);
1200                 return -ENOMEM;
1201         }
1202
1203         head_td = priv->apCurrTD[dma_idx];
1204
1205         head_td->m_td1TD1.byTCR = 0;
1206
1207         head_td->pTDInfo->skb = skb;
1208
1209         priv->iTDUsed[dma_idx]++;
1210
1211         /* Take ownership */
1212         wmb();
1213         head_td->m_td0TD0.f1Owner = OWNED_BY_NIC;
1214
1215         /* get Next */
1216         wmb();
1217         priv->apCurrTD[dma_idx] = head_td->next;
1218
1219         spin_unlock_irqrestore(&priv->lock, flags);
1220
1221         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1222
1223         if (MACbIsRegBitsOn(priv->PortOffset, MAC_REG_PSCTL, PSCTL_PS))
1224                 MACbPSWakeup(priv->PortOffset);
1225
1226         spin_lock_irqsave(&priv->lock, flags);
1227
1228         priv->bPWBitOn = false;
1229
1230         /* Set TSR1 & ReqCount in TxDescHead */
1231         head_td->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP | EDMSDU);
1232         head_td->m_td1TD1.wReqCount =
1233                         cpu_to_le16((u16)head_td->pTDInfo->dwReqCount);
1234
1235         head_td->buff_addr = cpu_to_le32(head_td->pTDInfo->skb_dma);
1236
1237         if (dma_idx == TYPE_AC0DMA) {
1238                 head_td->pTDInfo->byFlags = TD_FLAGS_NETIF_SKB;
1239
1240                 MACvTransmitAC0(priv->PortOffset);
1241         } else {
1242                 MACvTransmit0(priv->PortOffset);
1243         }
1244
1245         spin_unlock_irqrestore(&priv->lock, flags);
1246
1247         return 0;
1248 }
1249
1250 static void vnt_tx_80211(struct ieee80211_hw *hw,
1251                          struct ieee80211_tx_control *control,
1252                          struct sk_buff *skb)
1253 {
1254         struct vnt_private *priv = hw->priv;
1255
1256         ieee80211_stop_queues(hw);
1257
1258         if (vnt_tx_packet(priv, skb)) {
1259                 ieee80211_free_txskb(hw, skb);
1260
1261                 ieee80211_wake_queues(hw);
1262         }
1263 }
1264
1265 static int vnt_start(struct ieee80211_hw *hw)
1266 {
1267         struct vnt_private *priv = hw->priv;
1268         int ret;
1269
1270         priv->rx_buf_sz = PKT_BUF_SZ;
1271         if (!device_init_rings(priv))
1272                 return -ENOMEM;
1273
1274         ret = request_irq(priv->pcid->irq, &device_intr,
1275                           IRQF_SHARED, "vt6655", priv);
1276         if (ret) {
1277                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1278                 return ret;
1279         }
1280
1281         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1282         device_init_rd0_ring(priv);
1283         device_init_rd1_ring(priv);
1284         device_init_td0_ring(priv);
1285         device_init_td1_ring(priv);
1286
1287         device_init_registers(priv);
1288
1289         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1290         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1291
1292         ieee80211_wake_queues(hw);
1293
1294         return 0;
1295 }
1296
1297 static void vnt_stop(struct ieee80211_hw *hw)
1298 {
1299         struct vnt_private *priv = hw->priv;
1300
1301         ieee80211_stop_queues(hw);
1302
1303         MACbShutdown(priv->PortOffset);
1304         MACbSoftwareReset(priv->PortOffset);
1305         CARDbRadioPowerOff(priv);
1306
1307         device_free_td0_ring(priv);
1308         device_free_td1_ring(priv);
1309         device_free_rd0_ring(priv);
1310         device_free_rd1_ring(priv);
1311         device_free_rings(priv);
1312
1313         free_irq(priv->pcid->irq, priv);
1314 }
1315
1316 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1317 {
1318         struct vnt_private *priv = hw->priv;
1319
1320         priv->vif = vif;
1321
1322         switch (vif->type) {
1323         case NL80211_IFTYPE_STATION:
1324                 break;
1325         case NL80211_IFTYPE_ADHOC:
1326                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1327
1328                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1329
1330                 break;
1331         case NL80211_IFTYPE_AP:
1332                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1333
1334                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1335
1336                 break;
1337         default:
1338                 return -EOPNOTSUPP;
1339         }
1340
1341         priv->op_mode = vif->type;
1342
1343         return 0;
1344 }
1345
1346 static void vnt_remove_interface(struct ieee80211_hw *hw,
1347                                  struct ieee80211_vif *vif)
1348 {
1349         struct vnt_private *priv = hw->priv;
1350
1351         switch (vif->type) {
1352         case NL80211_IFTYPE_STATION:
1353                 break;
1354         case NL80211_IFTYPE_ADHOC:
1355                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1356                 MACvRegBitsOff(priv->PortOffset,
1357                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1358                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1359                 break;
1360         case NL80211_IFTYPE_AP:
1361                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1362                 MACvRegBitsOff(priv->PortOffset,
1363                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1364                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1365                 break;
1366         default:
1367                 break;
1368         }
1369
1370         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1371 }
1372
1373
1374 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1375 {
1376         struct vnt_private *priv = hw->priv;
1377         struct ieee80211_conf *conf = &hw->conf;
1378         u8 bb_type;
1379
1380         if (changed & IEEE80211_CONF_CHANGE_PS) {
1381                 if (conf->flags & IEEE80211_CONF_PS)
1382                         PSvEnablePowerSaving(priv, conf->listen_interval);
1383                 else
1384                         PSvDisablePowerSaving(priv);
1385         }
1386
1387         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1388             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1389                 set_channel(priv, conf->chandef.chan);
1390
1391                 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
1392                         bb_type = BB_TYPE_11A;
1393                 else
1394                         bb_type = BB_TYPE_11G;
1395
1396                 if (priv->byBBType != bb_type) {
1397                         priv->byBBType = bb_type;
1398
1399                         CARDbSetPhyParameter(priv, priv->byBBType);
1400                 }
1401         }
1402
1403         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1404                 if (priv->byBBType == BB_TYPE_11B)
1405                         priv->wCurrentRate = RATE_1M;
1406                 else
1407                         priv->wCurrentRate = RATE_54M;
1408
1409                 RFbSetPower(priv, priv->wCurrentRate,
1410                             conf->chandef.chan->hw_value);
1411         }
1412
1413         return 0;
1414 }
1415
1416 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1417                 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
1418                 u32 changed)
1419 {
1420         struct vnt_private *priv = hw->priv;
1421
1422         priv->current_aid = conf->aid;
1423
1424         if (changed & BSS_CHANGED_BSSID)
1425                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1426
1427         if (changed & BSS_CHANGED_BASIC_RATES) {
1428                 priv->basic_rates = conf->basic_rates;
1429
1430                 CARDvUpdateBasicTopRate(priv);
1431
1432                 dev_dbg(&priv->pcid->dev,
1433                         "basic rates %x\n", conf->basic_rates);
1434         }
1435
1436         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1437                 if (conf->use_short_preamble) {
1438                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1439                         priv->byPreambleType = true;
1440                 } else {
1441                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1442                         priv->byPreambleType = false;
1443                 }
1444         }
1445
1446         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1447                 if (conf->use_cts_prot)
1448                         MACvEnableProtectMD(priv->PortOffset);
1449                 else
1450                         MACvDisableProtectMD(priv->PortOffset);
1451         }
1452
1453         if (changed & BSS_CHANGED_ERP_SLOT) {
1454                 if (conf->use_short_slot)
1455                         priv->bShortSlotTime = true;
1456                 else
1457                         priv->bShortSlotTime = false;
1458
1459                 CARDbSetPhyParameter(priv, priv->byBBType);
1460                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1461         }
1462
1463         if (changed & BSS_CHANGED_TXPOWER)
1464                 RFbSetPower(priv, priv->wCurrentRate,
1465                             conf->chandef.chan->hw_value);
1466
1467         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1468                 dev_dbg(&priv->pcid->dev,
1469                         "Beacon enable %d\n", conf->enable_beacon);
1470
1471                 if (conf->enable_beacon) {
1472                         vnt_beacon_enable(priv, vif, conf);
1473
1474                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1475                                       TCR_AUTOBCNTX);
1476                 } else {
1477                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1478                                        TCR_AUTOBCNTX);
1479                 }
1480         }
1481
1482         if (changed & BSS_CHANGED_ASSOC && priv->op_mode != NL80211_IFTYPE_AP) {
1483                 if (conf->assoc) {
1484                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1485                                        conf->sync_device_ts, conf->sync_tsf);
1486
1487                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1488
1489                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1490                 } else {
1491                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1492                                      TFTCTL_TSFCNTRST);
1493                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1494                                      TFTCTL_TSFCNTREN);
1495                 }
1496         }
1497 }
1498
1499 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1500         struct netdev_hw_addr_list *mc_list)
1501 {
1502         struct vnt_private *priv = hw->priv;
1503         struct netdev_hw_addr *ha;
1504         u64 mc_filter = 0;
1505         u32 bit_nr = 0;
1506
1507         netdev_hw_addr_list_for_each(ha, mc_list) {
1508                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1509
1510                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1511         }
1512
1513         priv->mc_list_count = mc_list->count;
1514
1515         return mc_filter;
1516 }
1517
1518 static void vnt_configure(struct ieee80211_hw *hw,
1519         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
1520 {
1521         struct vnt_private *priv = hw->priv;
1522         u8 rx_mode = 0;
1523
1524         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_PROMISC_IN_BSS |
1525                 FIF_BCN_PRBRESP_PROMISC;
1526
1527         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1528
1529         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1530
1531         if (changed_flags & FIF_PROMISC_IN_BSS) {
1532                 /* unconditionally log net taps */
1533                 if (*total_flags & FIF_PROMISC_IN_BSS)
1534                         rx_mode |= RCR_UNICAST;
1535                 else
1536                         rx_mode &= ~RCR_UNICAST;
1537         }
1538
1539         if (changed_flags & FIF_ALLMULTI) {
1540                 if (*total_flags & FIF_ALLMULTI) {
1541                         unsigned long flags;
1542
1543                         spin_lock_irqsave(&priv->lock, flags);
1544
1545                         if (priv->mc_list_count > 2) {
1546                                 MACvSelectPage1(priv->PortOffset);
1547
1548                                 VNSvOutPortD(priv->PortOffset +
1549                                              MAC_REG_MAR0, 0xffffffff);
1550                                 VNSvOutPortD(priv->PortOffset +
1551                                             MAC_REG_MAR0 + 4, 0xffffffff);
1552
1553                                 MACvSelectPage0(priv->PortOffset);
1554                         } else {
1555                                 MACvSelectPage1(priv->PortOffset);
1556
1557                                 VNSvOutPortD(priv->PortOffset +
1558                                              MAC_REG_MAR0, (u32)multicast);
1559                                 VNSvOutPortD(priv->PortOffset +
1560                                              MAC_REG_MAR0 + 4,
1561                                              (u32)(multicast >> 32));
1562
1563                                 MACvSelectPage0(priv->PortOffset);
1564                         }
1565
1566                         spin_unlock_irqrestore(&priv->lock, flags);
1567
1568                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1569                 } else {
1570                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1571                 }
1572         }
1573
1574         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1575                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1576
1577                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1578                         rx_mode &= ~RCR_BSSID;
1579                 else
1580                         rx_mode |= RCR_BSSID;
1581         }
1582
1583         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1584
1585         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1586 }
1587
1588 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1589         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1590                 struct ieee80211_key_conf *key)
1591 {
1592         struct vnt_private *priv = hw->priv;
1593
1594         switch (cmd) {
1595         case SET_KEY:
1596                 if (vnt_set_keys(hw, sta, vif, key))
1597                         return -EOPNOTSUPP;
1598                 break;
1599         case DISABLE_KEY:
1600                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1601                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1602         default:
1603                 break;
1604         }
1605
1606         return 0;
1607 }
1608
1609 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1610 {
1611         struct vnt_private *priv = hw->priv;
1612         u64 tsf;
1613
1614         CARDbGetCurrentTSF(priv, &tsf);
1615
1616         return tsf;
1617 }
1618
1619 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1620                         u64 tsf)
1621 {
1622         struct vnt_private *priv = hw->priv;
1623
1624         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1625 }
1626
1627 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1628 {
1629         struct vnt_private *priv = hw->priv;
1630
1631         /* reset TSF counter */
1632         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1633 }
1634
1635 static const struct ieee80211_ops vnt_mac_ops = {
1636         .tx                     = vnt_tx_80211,
1637         .start                  = vnt_start,
1638         .stop                   = vnt_stop,
1639         .add_interface          = vnt_add_interface,
1640         .remove_interface       = vnt_remove_interface,
1641         .config                 = vnt_config,
1642         .bss_info_changed       = vnt_bss_info_changed,
1643         .prepare_multicast      = vnt_prepare_multicast,
1644         .configure_filter       = vnt_configure,
1645         .set_key                = vnt_set_key,
1646         .get_tsf                = vnt_get_tsf,
1647         .set_tsf                = vnt_set_tsf,
1648         .reset_tsf              = vnt_reset_tsf,
1649 };
1650
1651 static int vnt_init(struct vnt_private *priv)
1652 {
1653         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1654
1655         vnt_init_bands(priv);
1656
1657         if (ieee80211_register_hw(priv->hw))
1658                 return -ENODEV;
1659
1660         priv->mac_hw = true;
1661
1662         CARDbRadioPowerOff(priv);
1663
1664         return 0;
1665 }
1666
1667 static int
1668 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1669 {
1670         PCHIP_INFO  pChip_info = (PCHIP_INFO)ent->driver_data;
1671         struct vnt_private *priv;
1672         struct ieee80211_hw *hw;
1673         struct wiphy *wiphy;
1674         int         rc;
1675
1676         dev_notice(&pcid->dev,
1677                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1678
1679         dev_notice(&pcid->dev,
1680                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1681
1682         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1683         if (!hw) {
1684                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1685                 return -ENOMEM;
1686         }
1687
1688         priv = hw->priv;
1689
1690         vt6655_init_info(pcid, &priv, pChip_info);
1691
1692         priv->hw = hw;
1693
1694         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1695
1696         if (pci_enable_device(pcid)) {
1697                 device_free_info(priv);
1698                 return -ENODEV;
1699         }
1700
1701         dev_dbg(&pcid->dev,
1702                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1703
1704         if (!device_get_pci_info(priv, pcid)) {
1705                 dev_err(&pcid->dev, ": Failed to find PCI device.\n");
1706                 device_free_info(priv);
1707                 return -ENODEV;
1708         }
1709
1710 #ifdef  DEBUG
1711         dev_dbg(&pcid->dev,
1712                 "after get pci_info memaddr is %x, io addr is %x,io_size is %d\n",
1713                 priv->memaddr, priv->ioaddr, priv->io_size);
1714         {
1715                 int i;
1716                 u32 bar, len;
1717                 u32 address[] = {
1718                         PCI_BASE_ADDRESS_0,
1719                         PCI_BASE_ADDRESS_1,
1720                         PCI_BASE_ADDRESS_2,
1721                         PCI_BASE_ADDRESS_3,
1722                         PCI_BASE_ADDRESS_4,
1723                         PCI_BASE_ADDRESS_5,
1724                         0};
1725                 for (i = 0; address[i]; i++) {
1726                         pci_read_config_dword(pcid, address[i], &bar);
1727
1728                         dev_dbg(&pcid->dev, "bar %d is %x\n", i, bar);
1729
1730                         if (!bar) {
1731                                 dev_dbg(&pcid->dev,
1732                                         "bar %d not implemented\n", i);
1733                                 continue;
1734                         }
1735
1736                         if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
1737                                 /* This is IO */
1738
1739                                 len = bar & (PCI_BASE_ADDRESS_IO_MASK & 0xffff);
1740                                 len = len & ~(len - 1);
1741
1742                                 dev_dbg(&pcid->dev,
1743                                         "IO space:  len in IO %x, BAR %d\n",
1744                                         len, i);
1745                         } else {
1746                                 len = bar & 0xfffffff0;
1747                                 len = ~len + 1;
1748
1749                                 dev_dbg(&pcid->dev,
1750                                         "len in MEM %x, BAR %d\n", len, i);
1751                         }
1752                 }
1753         }
1754 #endif
1755
1756         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1757                                    priv->io_size);
1758         if (!priv->PortOffset) {
1759                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1760                 device_free_info(priv);
1761                 return -ENODEV;
1762         }
1763
1764         rc = pci_request_regions(pcid, DEVICE_NAME);
1765         if (rc) {
1766                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1767                 device_free_info(priv);
1768                 return -ENODEV;
1769         }
1770
1771         /* do reset */
1772         if (!MACbSoftwareReset(priv->PortOffset)) {
1773                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1774                 device_free_info(priv);
1775                 return -ENODEV;
1776         }
1777         /* initial to reload eeprom */
1778         MACvInitialize(priv->PortOffset);
1779         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1780
1781         device_get_options(priv);
1782         device_set_options(priv);
1783         /* Mask out the options cannot be set to the chip */
1784         priv->sOpts.flags &= pChip_info->flags;
1785
1786         /* Enable the chip specified capabilities */
1787         priv->flags = priv->sOpts.flags | (pChip_info->flags & 0xff000000UL);
1788
1789         wiphy = priv->hw->wiphy;
1790
1791         wiphy->frag_threshold = FRAG_THRESH_DEF;
1792         wiphy->rts_threshold = RTS_THRESH_DEF;
1793         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1794                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1795
1796         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1797                 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
1798                 IEEE80211_HW_SIGNAL_DBM |
1799                 IEEE80211_HW_TIMING_BEACON_ONLY;
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 static int __init vt6655_init_module(void)
1859 {
1860         int ret;
1861
1862         ret = pci_register_driver(&device_driver);
1863 #ifdef CONFIG_PM
1864         if (ret >= 0)
1865                 register_reboot_notifier(&device_notifier);
1866 #endif
1867
1868         return ret;
1869 }
1870
1871 static void __exit vt6655_cleanup_module(void)
1872 {
1873 #ifdef CONFIG_PM
1874         unregister_reboot_notifier(&device_notifier);
1875 #endif
1876         pci_unregister_driver(&device_driver);
1877 }
1878
1879 module_init(vt6655_init_module);
1880 module_exit(vt6655_cleanup_module);
1881
1882 #ifdef CONFIG_PM
1883 static int
1884 device_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
1885 {
1886         struct pci_dev *pdev = NULL;
1887
1888         switch (event) {
1889         case SYS_DOWN:
1890         case SYS_HALT:
1891         case SYS_POWER_OFF:
1892                 for_each_pci_dev(pdev) {
1893                         if (pci_dev_driver(pdev) == &device_driver) {
1894                                 if (pci_get_drvdata(pdev))
1895                                         vt6655_suspend(pdev, PMSG_HIBERNATE);
1896                         }
1897                 }
1898         }
1899         return NOTIFY_DONE;
1900 }
1901 #endif