kernel/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         if (!pDevice->bZoneRegExist)
 334                 pDevice->byZoneType = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 335
 336         pr_debug("pDevice->byZoneType = %x\n", pDevice->byZoneType);
 337
 338         /* Init RF module */
 339         RFbInit(pDevice);
 340
 341         /* Get Desire Power Value */
 342         pDevice->byCurPwr = 0xFF;
 343         pDevice->byCCKPwr = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_CCK);
 344         pDevice->byOFDMPwrG = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_OFDMG);
 345
 346         /* Load power Table */
 347         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 348                 pDevice->abyCCKPwrTbl[ii + 1] =
 349                         SROMbyReadEmbedded(pDevice->PortOffset,
 350                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 351                 if (pDevice->abyCCKPwrTbl[ii + 1] == 0)
 352                         pDevice->abyCCKPwrTbl[ii+1] = pDevice->byCCKPwr;
 353
 354                 pDevice->abyOFDMPwrTbl[ii + 1] =
 355                         SROMbyReadEmbedded(pDevice->PortOffset,
 356                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 357                 if (pDevice->abyOFDMPwrTbl[ii + 1] == 0)
 358                         pDevice->abyOFDMPwrTbl[ii + 1] = pDevice->byOFDMPwrG;
 359
 360                 pDevice->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 361                 pDevice->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 362         }
 363
 364         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 365         for (ii = 11; ii < 14; ii++) {
 366                 pDevice->abyCCKPwrTbl[ii] = pDevice->abyCCKPwrTbl[10];
 367                 pDevice->abyOFDMPwrTbl[ii] = pDevice->abyOFDMPwrTbl[10];
 368         }
 369
 370         /* Load OFDM A Power Table */
 371         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 372                 pDevice->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 373                         SROMbyReadEmbedded(pDevice->PortOffset,
 374                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 375
 376                 pDevice->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 377                         SROMbyReadEmbedded(pDevice->PortOffset,
 378                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 379         }
 380
 381         if (pDevice->byLocalID > REV_ID_VT3253_B1) {
 382                 MACvSelectPage1(pDevice->PortOffset);
 383
 384                 VNSvOutPortB(pDevice->PortOffset + MAC_REG_MSRCTL + 1,
 385                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 386
 387                 MACvSelectPage0(pDevice->PortOffset);
 388         }
 389
 390         /* use relative tx timeout and 802.11i D4 */
 391         MACvWordRegBitsOn(pDevice->PortOffset,
 392                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 393
 394         /* set performance parameter by registry */
 395         MACvSetShortRetryLimit(pDevice->PortOffset, pDevice->byShortRetryLimit);
 396         MACvSetLongRetryLimit(pDevice->PortOffset, pDevice->byLongRetryLimit);
 397
 398         /* reset TSF counter */
 399         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 400         /* enable TSF counter */
 401         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 402
 403         /* initialize BBP registers */
 404         BBbVT3253Init(pDevice);
 405
 406         if (pDevice->bUpdateBBVGA) {
 407                 pDevice->byBBVGACurrent = pDevice->abyBBVGA[0];
 408                 pDevice->byBBVGANew = pDevice->byBBVGACurrent;
 409                 BBvSetVGAGainOffset(pDevice, pDevice->abyBBVGA[0]);
 410         }
 411
 412         BBvSetRxAntennaMode(pDevice, pDevice->byRxAntennaMode);
 413         BBvSetTxAntennaMode(pDevice, pDevice->byTxAntennaMode);
 414
 415         /* Set BB and packet type at the same time. */
 416         /* Set Short Slot Time, xIFS, and RSPINF. */
 417         pDevice->wCurrentRate = RATE_54M;
 418
 419         pDevice->bRadioOff = false;
 420
 421         pDevice->byRadioCtl = SROMbyReadEmbedded(pDevice->PortOffset,
 422                                                  EEP_OFS_RADIOCTL);
 423         pDevice->bHWRadioOff = false;
 424
 425         if (pDevice->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 426                 /* Get GPIO */
 427                 MACvGPIOIn(pDevice->PortOffset, &pDevice->byGPIO);
 428
 429                 if (((pDevice->byGPIO & GPIO0_DATA) &&
 430                      !(pDevice->byRadioCtl & EEP_RADIOCTL_INV)) ||
 431                      (!(pDevice->byGPIO & GPIO0_DATA) &&
 432                      (pDevice->byRadioCtl & EEP_RADIOCTL_INV)))
 433                         pDevice->bHWRadioOff = true;
 434         }
 435
 436         if (pDevice->bHWRadioOff || pDevice->bRadioControlOff)
 437                 CARDbRadioPowerOff(pDevice);
 438
 439         /* get Permanent network address */
 440         SROMvReadEtherAddress(pDevice->PortOffset, pDevice->abyCurrentNetAddr);
 441         pr_debug("Network address = %pM\n", pDevice->abyCurrentNetAddr);
 442
 443         /* reset Tx pointer */
 444         CARDvSafeResetRx(pDevice);
 445         /* reset Rx pointer */
 446         CARDvSafeResetTx(pDevice);
 447
 448         if (pDevice->byLocalID <= REV_ID_VT3253_A1)
 449                 MACvRegBitsOn(pDevice->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 450
 451         /* Turn On Rx DMA */
 452         MACvReceive0(pDevice->PortOffset);
 453         MACvReceive1(pDevice->PortOffset);
 454
 455         /* start the adapter */
 456         MACvStart(pDevice->PortOffset);
 457 }
 458
 459 static void device_print_info(struct vnt_private *pDevice)
 460 {
 461         dev_info(&pDevice->pcid->dev, "%s\n", get_chip_name(pDevice->chip_id));
 462
 463         dev_info(&pDevice->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 464                  pDevice->abyCurrentNetAddr, (unsigned long)pDevice->ioaddr,
 465                  (unsigned long)pDevice->PortOffset, pDevice->pcid->irq);
 466 }
 467
 468 static void vt6655_init_info(struct pci_dev *pcid,
 469                              struct vnt_private **ppDevice,
 470                              PCHIP_INFO pChip_info)
 471 {
 472         memset(*ppDevice, 0, sizeof(**ppDevice));
 473
 474         (*ppDevice)->pcid = pcid;
 475         (*ppDevice)->chip_id = pChip_info->chip_id;
 476         (*ppDevice)->io_size = pChip_info->io_size;
 477         (*ppDevice)->nTxQueues = pChip_info->nTxQueue;
 478         (*ppDevice)->multicast_limit = 32;
 479
 480         spin_lock_init(&((*ppDevice)->lock));
 481 }
 482
 483 static bool device_get_pci_info(struct vnt_private *pDevice,
 484                                 struct pci_dev *pcid)
 485 {
 486         u16 pci_cmd;
 487         u8  b;
 488         unsigned int cis_addr;
 489
 490         pci_read_config_byte(pcid, PCI_REVISION_ID, &pDevice->byRevId);
 491         pci_read_config_word(pcid, PCI_SUBSYSTEM_ID, &pDevice->SubSystemID);
 492         pci_read_config_word(pcid, PCI_SUBSYSTEM_VENDOR_ID, &pDevice->SubVendorID);
 493         pci_read_config_word(pcid, PCI_COMMAND, (u16 *)&(pci_cmd));
 494
 495         pci_set_master(pcid);
 496
 497         pDevice->memaddr = pci_resource_start(pcid, 0);
 498         pDevice->ioaddr = pci_resource_start(pcid, 1);
 499
 500         cis_addr = pci_resource_start(pcid, 2);
 501
 502         pDevice->pcid = pcid;
 503
 504         pci_read_config_byte(pcid, PCI_COMMAND, &b);
 505         pci_write_config_byte(pcid, PCI_COMMAND, (b|PCI_COMMAND_MASTER));
 506
 507         return true;
 508 }
 509
 510 static void device_free_info(struct vnt_private *pDevice)
 511 {
 512         if (!pDevice)
 513                 return;
 514
 515         if (pDevice->mac_hw)
 516                 ieee80211_unregister_hw(pDevice->hw);
 517
 518         if (pDevice->PortOffset)
 519                 iounmap(pDevice->PortOffset);
 520
 521         if (pDevice->pcid)
 522                 pci_release_regions(pDevice->pcid);
 523
 524         if (pDevice->hw)
 525                 ieee80211_free_hw(pDevice->hw);
 526 }
 527
 528 static bool device_init_rings(struct vnt_private *pDevice)
 529 {
 530         void *vir_pool;
 531
 532         /*allocate all RD/TD rings a single pool*/
 533         vir_pool = dma_zalloc_coherent(&pDevice->pcid->dev,
 534                                          pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 535                                          pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 536                                          pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 537                                          pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc),
 538                                          &pDevice->pool_dma, GFP_ATOMIC);
 539         if (vir_pool == NULL) {
 540                 dev_err(&pDevice->pcid->dev, "allocate desc dma memory failed\n");
 541                 return false;
 542         }
 543
 544         pDevice->aRD0Ring = vir_pool;
 545         pDevice->aRD1Ring = vir_pool +
 546                 pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc);
 547
 548         pDevice->rd0_pool_dma = pDevice->pool_dma;
 549         pDevice->rd1_pool_dma = pDevice->rd0_pool_dma +
 550                 pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc);
 551
 552         pDevice->tx0_bufs = dma_zalloc_coherent(&pDevice->pcid->dev,
 553                                                   pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 554                                                   pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 555                                                   CB_BEACON_BUF_SIZE +
 556                                                   CB_MAX_BUF_SIZE,
 557                                                   &pDevice->tx_bufs_dma0,
 558                                                   GFP_ATOMIC);
 559         if (pDevice->tx0_bufs == NULL) {
 560                 dev_err(&pDevice->pcid->dev, "allocate buf dma memory failed\n");
 561
 562                 dma_free_coherent(&pDevice->pcid->dev,
 563                                     pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 564                                     pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 565                                     pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 566                                     pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc),
 567                                     vir_pool, pDevice->pool_dma
 568                         );
 569                 return false;
 570         }
 571
 572         pDevice->td0_pool_dma = pDevice->rd1_pool_dma +
 573                 pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc);
 574
 575         pDevice->td1_pool_dma = pDevice->td0_pool_dma +
 576                 pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc);
 577
 578         /* vir_pool: pvoid type */
 579         pDevice->apTD0Rings = vir_pool
 580                 + pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc)
 581                 + pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc);
 582
 583         pDevice->apTD1Rings = vir_pool
 584                 + pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc)
 585                 + pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc)
 586                 + pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc);
 587
 588         pDevice->tx1_bufs = pDevice->tx0_bufs +
 589                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 590
 591         pDevice->tx_beacon_bufs = pDevice->tx1_bufs +
 592                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 593
 594         pDevice->pbyTmpBuff = pDevice->tx_beacon_bufs +
 595                 CB_BEACON_BUF_SIZE;
 596
 597         pDevice->tx_bufs_dma1 = pDevice->tx_bufs_dma0 +
 598                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 599
 600         pDevice->tx_beacon_dma = pDevice->tx_bufs_dma1 +
 601                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 602
 603         return true;
 604 }
 605
 606 static void device_free_rings(struct vnt_private *pDevice)
 607 {
 608         dma_free_coherent(&pDevice->pcid->dev,
 609                             pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 610                             pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 611                             pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 612                             pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc)
 613                             ,
 614                             pDevice->aRD0Ring, pDevice->pool_dma
 615                 );
 616
 617         if (pDevice->tx0_bufs)
 618                 dma_free_coherent(&pDevice->pcid->dev,
 619                                     pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 620                                     pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 621                                     CB_BEACON_BUF_SIZE +
 622                                     CB_MAX_BUF_SIZE,
 623                                     pDevice->tx0_bufs, pDevice->tx_bufs_dma0
 624                         );
 625 }
 626
 627 static void device_init_rd0_ring(struct vnt_private *pDevice)
 628 {
 629         int i;
 630         dma_addr_t      curr = pDevice->rd0_pool_dma;
 631         PSRxDesc        pDesc;
 632
 633         /* Init the RD0 ring entries */
 634         for (i = 0; i < pDevice->sOpts.nRxDescs0; i ++, curr += sizeof(SRxDesc)) {
 635                 pDesc = &(pDevice->aRD0Ring[i]);
 636                 pDesc->pRDInfo = alloc_rd_info();
 637                 ASSERT(pDesc->pRDInfo);
 638                 if (!device_alloc_rx_buf(pDevice, pDesc))
 639                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 640
 641                 pDesc->next = &(pDevice->aRD0Ring[(i+1) % pDevice->sOpts.nRxDescs0]);
 642                 pDesc->pRDInfo->curr_desc = cpu_to_le32(curr);
 643                 pDesc->next_desc = cpu_to_le32(curr + sizeof(SRxDesc));
 644         }
 645
 646         if (i > 0)
 647                 pDevice->aRD0Ring[i-1].next_desc = cpu_to_le32(pDevice->rd0_pool_dma);
 648         pDevice->pCurrRD[0] = &(pDevice->aRD0Ring[0]);
 649 }
 650
 651 static void device_init_rd1_ring(struct vnt_private *pDevice)
 652 {
 653         int i;
 654         dma_addr_t      curr = pDevice->rd1_pool_dma;
 655         PSRxDesc        pDesc;
 656
 657         /* Init the RD1 ring entries */
 658         for (i = 0; i < pDevice->sOpts.nRxDescs1; i ++, curr += sizeof(SRxDesc)) {
 659                 pDesc = &(pDevice->aRD1Ring[i]);
 660                 pDesc->pRDInfo = alloc_rd_info();
 661                 ASSERT(pDesc->pRDInfo);
 662                 if (!device_alloc_rx_buf(pDevice, pDesc))
 663                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 664
 665                 pDesc->next = &(pDevice->aRD1Ring[(i+1) % pDevice->sOpts.nRxDescs1]);
 666                 pDesc->pRDInfo->curr_desc = cpu_to_le32(curr);
 667                 pDesc->next_desc = cpu_to_le32(curr + sizeof(SRxDesc));
 668         }
 669
 670         if (i > 0)
 671                 pDevice->aRD1Ring[i-1].next_desc = cpu_to_le32(pDevice->rd1_pool_dma);
 672         pDevice->pCurrRD[1] = &(pDevice->aRD1Ring[0]);
 673 }
 674
 675 static void device_free_rd0_ring(struct vnt_private *pDevice)
 676 {
 677         int i;
 678
 679         for (i = 0; i < pDevice->sOpts.nRxDescs0; i++) {
 680                 PSRxDesc        pDesc = &(pDevice->aRD0Ring[i]);
 681                 PDEVICE_RD_INFO  pRDInfo = pDesc->pRDInfo;
 682
 683                 dma_unmap_single(&pDevice->pcid->dev, pRDInfo->skb_dma,
 684                                  pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 685
 686                 dev_kfree_skb(pRDInfo->skb);
 687
 688                 kfree(pDesc->pRDInfo);
 689         }
 690 }
 691
 692 static void device_free_rd1_ring(struct vnt_private *pDevice)
 693 {
 694         int i;
 695
 696         for (i = 0; i < pDevice->sOpts.nRxDescs1; i++) {
 697                 PSRxDesc        pDesc = &(pDevice->aRD1Ring[i]);
 698                 PDEVICE_RD_INFO  pRDInfo = pDesc->pRDInfo;
 699
 700                 dma_unmap_single(&pDevice->pcid->dev, pRDInfo->skb_dma,
 701                                  pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 702
 703                 dev_kfree_skb(pRDInfo->skb);
 704
 705                 kfree(pDesc->pRDInfo);
 706         }
 707 }
 708
 709 static void device_init_td0_ring(struct vnt_private *pDevice)
 710 {
 711         int i;
 712         dma_addr_t  curr;
 713         PSTxDesc        pDesc;
 714
 715         curr = pDevice->td0_pool_dma;
 716         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++, curr += sizeof(STxDesc)) {
 717                 pDesc = &(pDevice->apTD0Rings[i]);
 718                 pDesc->pTDInfo = alloc_td_info();
 719                 ASSERT(pDesc->pTDInfo);
 720                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 721                         pDesc->pTDInfo->buf = pDevice->tx0_bufs + (i)*PKT_BUF_SZ;
 722                         pDesc->pTDInfo->buf_dma = pDevice->tx_bufs_dma0 + (i)*PKT_BUF_SZ;
 723                 }
 724                 pDesc->next = &(pDevice->apTD0Rings[(i+1) % pDevice->sOpts.nTxDescs[0]]);
 725                 pDesc->pTDInfo->curr_desc = cpu_to_le32(curr);
 726                 pDesc->next_desc = cpu_to_le32(curr+sizeof(STxDesc));
 727         }
 728
 729         if (i > 0)
 730                 pDevice->apTD0Rings[i-1].next_desc = cpu_to_le32(pDevice->td0_pool_dma);
 731         pDevice->apTailTD[0] = pDevice->apCurrTD[0] = &(pDevice->apTD0Rings[0]);
 732 }
 733
 734 static void device_init_td1_ring(struct vnt_private *pDevice)
 735 {
 736         int i;
 737         dma_addr_t  curr;
 738         PSTxDesc    pDesc;
 739
 740         /* Init the TD ring entries */
 741         curr = pDevice->td1_pool_dma;
 742         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++, curr += sizeof(STxDesc)) {
 743                 pDesc = &(pDevice->apTD1Rings[i]);
 744                 pDesc->pTDInfo = alloc_td_info();
 745                 ASSERT(pDesc->pTDInfo);
 746                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 747                         pDesc->pTDInfo->buf = pDevice->tx1_bufs + (i) * PKT_BUF_SZ;
 748                         pDesc->pTDInfo->buf_dma = pDevice->tx_bufs_dma1 + (i) * PKT_BUF_SZ;
 749                 }
 750                 pDesc->next = &(pDevice->apTD1Rings[(i + 1) % pDevice->sOpts.nTxDescs[1]]);
 751                 pDesc->pTDInfo->curr_desc = cpu_to_le32(curr);
 752                 pDesc->next_desc = cpu_to_le32(curr+sizeof(STxDesc));
 753         }
 754
 755         if (i > 0)
 756                 pDevice->apTD1Rings[i-1].next_desc = cpu_to_le32(pDevice->td1_pool_dma);
 757         pDevice->apTailTD[1] = pDevice->apCurrTD[1] = &(pDevice->apTD1Rings[0]);
 758 }
 759
 760 static void device_free_td0_ring(struct vnt_private *pDevice)
 761 {
 762         int i;
 763
 764         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++) {
 765                 PSTxDesc        pDesc = &(pDevice->apTD0Rings[i]);
 766                 PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 767
 768                 if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
 769                         dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
 770                                          pTDInfo->skb->len, DMA_TO_DEVICE);
 771
 772                 if (pTDInfo->skb)
 773                         dev_kfree_skb(pTDInfo->skb);
 774
 775                 kfree(pDesc->pTDInfo);
 776         }
 777 }
 778
 779 static void device_free_td1_ring(struct vnt_private *pDevice)
 780 {
 781         int i;
 782
 783         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++) {
 784                 PSTxDesc        pDesc = &(pDevice->apTD1Rings[i]);
 785                 PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 786
 787                 if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
 788                         dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
 789                                          pTDInfo->skb->len, DMA_TO_DEVICE);
 790
 791                 if (pTDInfo->skb)
 792                         dev_kfree_skb(pTDInfo->skb);
 793
 794                 kfree(pDesc->pTDInfo);
 795         }
 796 }
 797
 798 /*-----------------------------------------------------------------*/
 799
 800 static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 801 {
 802         PSRxDesc    pRD;
 803         int works = 0;
 804
 805         for (pRD = pDevice->pCurrRD[uIdx];
 806              pRD->m_rd0RD0.f1Owner == OWNED_BY_HOST;
 807              pRD = pRD->next) {
 808                 if (works++ > 15)
 809                         break;
 810                 if (vnt_receive_frame(pDevice, pRD)) {
 811                         if (!device_alloc_rx_buf(pDevice, pRD)) {
 812                                 dev_err(&pDevice->pcid->dev,
 813                                         "can not allocate rx buf\n");
 814                                 break;
 815                         }
 816                 }
 817                 pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 818         }
 819
 820         pDevice->pCurrRD[uIdx] = pRD;
 821
 822         return works;
 823 }
 824
 825 static bool device_alloc_rx_buf(struct vnt_private *pDevice, PSRxDesc pRD)
 826 {
 827         PDEVICE_RD_INFO pRDInfo = pRD->pRDInfo;
 828
 829         pRDInfo->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 830         if (pRDInfo->skb == NULL)
 831                 return false;
 832         ASSERT(pRDInfo->skb);
 833
 834         pRDInfo->skb_dma =
 835                 dma_map_single(&pDevice->pcid->dev,
 836                                skb_put(pRDInfo->skb, skb_tailroom(pRDInfo->skb)),
 837                                pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 838
 839         *((unsigned int *)&(pRD->m_rd0RD0)) = 0; /* FIX cast */
 840
 841         pRD->m_rd0RD0.wResCount = cpu_to_le16(pDevice->rx_buf_sz);
 842         pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 843         pRD->m_rd1RD1.wReqCount = cpu_to_le16(pDevice->rx_buf_sz);
 844         pRD->buff_addr = cpu_to_le32(pRDInfo->skb_dma);
 845
 846         return true;
 847 }
 848
 849 static const u8 fallback_rate0[5][5] = {
 850         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 851         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 852         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 853         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 854         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 855 };
 856
 857 static const u8 fallback_rate1[5][5] = {
 858         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 859         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 860         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 861         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 862         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 863 };
 864
 865 static int vnt_int_report_rate(struct vnt_private *priv,
 866                                PDEVICE_TD_INFO context, u8 tsr0, u8 tsr1)
 867 {
 868         struct vnt_tx_fifo_head *fifo_head;
 869         struct ieee80211_tx_info *info;
 870         struct ieee80211_rate *rate;
 871         u16 fb_option;
 872         u8 tx_retry = (tsr0 & TSR0_NCR);
 873         s8 idx;
 874
 875         if (!context)
 876                 return -ENOMEM;
 877
 878         if (!context->skb)
 879                 return -EINVAL;
 880
 881         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 882         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 883                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 884
 885         info = IEEE80211_SKB_CB(context->skb);
 886         idx = info->control.rates[0].idx;
 887
 888         if (fb_option && !(tsr1 & TSR1_TERR)) {
 889                 u8 tx_rate;
 890                 u8 retry = tx_retry;
 891
 892                 rate = ieee80211_get_tx_rate(priv->hw, info);
 893                 tx_rate = rate->hw_value - RATE_18M;
 894
 895                 if (retry > 4)
 896                         retry = 4;
 897
 898                 if (fb_option & FIFOCTL_AUTO_FB_0)
 899                         tx_rate = fallback_rate0[tx_rate][retry];
 900                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 901                         tx_rate = fallback_rate1[tx_rate][retry];
 902
 903                 if (info->band == IEEE80211_BAND_5GHZ)
 904                         idx = tx_rate - RATE_6M;
 905                 else
 906                         idx = tx_rate;
 907         }
 908
 909         ieee80211_tx_info_clear_status(info);
 910
 911         info->status.rates[0].count = tx_retry;
 912
 913         if (!(tsr1 & TSR1_TERR)) {
 914                 info->status.rates[0].idx = idx;
 915
 916                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 917                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 918                 else
 919                         info->flags |= IEEE80211_TX_STAT_ACK;
 920         }
 921
 922         return 0;
 923 }
 924
 925 static int device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 926 {
 927         PSTxDesc                 pTD;
 928         int                      works = 0;
 929         unsigned char byTsr0;
 930         unsigned char byTsr1;
 931
 932         for (pTD = pDevice->apTailTD[uIdx]; pDevice->iTDUsed[uIdx] > 0; pTD = pTD->next) {
 933                 if (pTD->m_td0TD0.f1Owner == OWNED_BY_NIC)
 934                         break;
 935                 if (works++ > 15)
 936                         break;
 937
 938                 byTsr0 = pTD->m_td0TD0.byTSR0;
 939                 byTsr1 = pTD->m_td0TD0.byTSR1;
 940
 941                 /* Only the status of first TD in the chain is correct */
 942                 if (pTD->m_td1TD1.byTCR & TCR_STP) {
 943                         if ((pTD->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB) != 0) {
 944                                 if (!(byTsr1 & TSR1_TERR)) {
 945                                         if (byTsr0 != 0) {
 946                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 947                                                          (int)uIdx, byTsr1,
 948                                                          byTsr0);
 949                                         }
 950                                 } else {
 951                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 952                                                  (int)uIdx, byTsr1, byTsr0);
 953                                 }
 954                         }
 955
 956                         if (byTsr1 & TSR1_TERR) {
 957                                 if ((pTD->pTDInfo->byFlags & TD_FLAGS_PRIV_SKB) != 0) {
 958                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 959                                                  (int)uIdx, byTsr1, byTsr0);
 960                                 }
 961                         }
 962
 963                         vnt_int_report_rate(pDevice, pTD->pTDInfo, byTsr0, byTsr1);
 964
 965                         device_free_tx_buf(pDevice, pTD);
 966                         pDevice->iTDUsed[uIdx]--;
 967                 }
 968         }
 969
 970         pDevice->apTailTD[uIdx] = pTD;
 971
 972         return works;
 973 }
 974
 975 static void device_error(struct vnt_private *pDevice, unsigned short status)
 976 {
 977         if (status & ISR_FETALERR) {
 978                 dev_err(&pDevice->pcid->dev, "Hardware fatal error\n");
 979
 980                 MACbShutdown(pDevice->PortOffset);
 981                 return;
 982         }
 983 }
 984
 985 static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc)
 986 {
 987         PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 988         struct sk_buff *skb = pTDInfo->skb;
 989
 990         /* pre-allocated buf_dma can't be unmapped. */
 991         if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma)) {
 992                 dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
 993                                  skb->len, DMA_TO_DEVICE);
 994         }
 995
 996         if (skb)
 997                 ieee80211_tx_status_irqsafe(pDevice->hw, skb);
 998
 999         pTDInfo->skb_dma = 0;
1000         pTDInfo->skb = NULL;
1001         pTDInfo->byFlags = 0;
1002 }
1003
1004 static void vnt_check_bb_vga(struct vnt_private *priv)
1005 {
1006         long dbm;
1007         int i;
1008
1009         if (!priv->bUpdateBBVGA)
1010                 return;
1011
1012         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1013                 return;
1014
1015         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
1016                 return;
1017
1018         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
1019
1020         for (i = 0; i < BB_VGA_LEVEL; i++) {
1021                 if (dbm < priv->ldBmThreshold[i]) {
1022                         priv->byBBVGANew = priv->abyBBVGA[i];
1023                         break;
1024                 }
1025         }
1026
1027         if (priv->byBBVGANew == priv->byBBVGACurrent) {
1028                 priv->uBBVGADiffCount = 1;
1029                 return;
1030         }
1031
1032         priv->uBBVGADiffCount++;
1033
1034         if (priv->uBBVGADiffCount == 1) {
1035                 /* first VGA diff gain */
1036                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1037
1038                 dev_dbg(&priv->pcid->dev,
1039                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1040                         (int)dbm, priv->byBBVGANew,
1041                         priv->byBBVGACurrent,
1042                         (int)priv->uBBVGADiffCount);
1043         }
1044
1045         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1046                 dev_dbg(&priv->pcid->dev,
1047                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1048                         (int)dbm, priv->byBBVGANew,
1049                         priv->byBBVGACurrent,
1050                         (int)priv->uBBVGADiffCount);
1051
1052                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1053         }
1054 }
1055
1056 static  irqreturn_t  device_intr(int irq,  void *dev_instance)
1057 {
1058         struct vnt_private *pDevice = dev_instance;
1059         int             max_count = 0;
1060         unsigned long dwMIBCounter = 0;
1061         unsigned char byOrgPageSel = 0;
1062         int             handled = 0;
1063         unsigned long flags;
1064
1065         MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1066
1067         if (pDevice->dwIsr == 0)
1068                 return IRQ_RETVAL(handled);
1069
1070         if (pDevice->dwIsr == 0xffffffff) {
1071                 pr_debug("dwIsr = 0xffff\n");
1072                 return IRQ_RETVAL(handled);
1073         }
1074
1075         handled = 1;
1076         MACvIntDisable(pDevice->PortOffset);
1077
1078         spin_lock_irqsave(&pDevice->lock, flags);
1079
1080         /* Make sure current page is 0 */
1081         VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
1082         if (byOrgPageSel == 1)
1083                 MACvSelectPage0(pDevice->PortOffset);
1084         else
1085                 byOrgPageSel = 0;
1086
1087         MACvReadMIBCounter(pDevice->PortOffset, &dwMIBCounter);
1088         /*
1089          * TBD....
1090          * Must do this after doing rx/tx, cause ISR bit is slow
1091          * than RD/TD write back
1092          * update ISR counter
1093          */
1094         STAvUpdate802_11Counter(&pDevice->s802_11Counter, &pDevice->scStatistic, dwMIBCounter);
1095         while (pDevice->dwIsr != 0) {
1096                 STAvUpdateIsrStatCounter(&pDevice->scStatistic, pDevice->dwIsr);
1097                 MACvWriteISR(pDevice->PortOffset, pDevice->dwIsr);
1098
1099                 if (pDevice->dwIsr & ISR_FETALERR) {
1100                         pr_debug(" ISR_FETALERR\n");
1101                         VNSvOutPortB(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1102                         VNSvOutPortW(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1103                         device_error(pDevice, pDevice->dwIsr);
1104                 }
1105
1106                 if (pDevice->dwIsr & ISR_TBTT) {
1107                         if (pDevice->vif &&
1108                             pDevice->op_mode != NL80211_IFTYPE_ADHOC)
1109                                 vnt_check_bb_vga(pDevice);
1110
1111                         pDevice->bBeaconSent = false;
1112                         if (pDevice->bEnablePSMode)
1113                                 PSbIsNextTBTTWakeUp((void *)pDevice);
1114
1115                         if ((pDevice->op_mode == NL80211_IFTYPE_AP ||
1116                             pDevice->op_mode == NL80211_IFTYPE_ADHOC) &&
1117                             pDevice->vif->bss_conf.enable_beacon) {
1118                                 MACvOneShotTimer1MicroSec(pDevice->PortOffset,
1119                                                           (pDevice->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1120                         }
1121
1122                         /* TODO: adhoc PS mode */
1123
1124                 }
1125
1126                 if (pDevice->dwIsr & ISR_BNTX) {
1127                         if (pDevice->op_mode == NL80211_IFTYPE_ADHOC) {
1128                                 pDevice->bIsBeaconBufReadySet = false;
1129                                 pDevice->cbBeaconBufReadySetCnt = 0;
1130                         }
1131
1132                         pDevice->bBeaconSent = true;
1133                 }
1134
1135                 if (pDevice->dwIsr & ISR_RXDMA0)
1136                         max_count += device_rx_srv(pDevice, TYPE_RXDMA0);
1137
1138                 if (pDevice->dwIsr & ISR_RXDMA1)
1139                         max_count += device_rx_srv(pDevice, TYPE_RXDMA1);
1140
1141                 if (pDevice->dwIsr & ISR_TXDMA0)
1142                         max_count += device_tx_srv(pDevice, TYPE_TXDMA0);
1143
1144                 if (pDevice->dwIsr & ISR_AC0DMA)
1145                         max_count += device_tx_srv(pDevice, TYPE_AC0DMA);
1146
1147                 if (pDevice->dwIsr & ISR_SOFTTIMER1) {
1148                         if (pDevice->vif) {
1149                                 if (pDevice->vif->bss_conf.enable_beacon)
1150                                         vnt_beacon_make(pDevice, pDevice->vif);
1151                         }
1152                 }
1153
1154                 /* If both buffers available wake the queue */
1155                 if (pDevice->vif) {
1156                         if (AVAIL_TD(pDevice, TYPE_TXDMA0) &&
1157                             AVAIL_TD(pDevice, TYPE_AC0DMA) &&
1158                             ieee80211_queue_stopped(pDevice->hw, 0))
1159                                 ieee80211_wake_queues(pDevice->hw);
1160                 }
1161
1162                 MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1163
1164                 MACvReceive0(pDevice->PortOffset);
1165                 MACvReceive1(pDevice->PortOffset);
1166
1167                 if (max_count > pDevice->sOpts.int_works)
1168                         break;
1169         }
1170
1171         if (byOrgPageSel == 1)
1172                 MACvSelectPage1(pDevice->PortOffset);
1173
1174         spin_unlock_irqrestore(&pDevice->lock, flags);
1175
1176         MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
1177
1178         return IRQ_RETVAL(handled);
1179 }
1180
1181 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1182 {
1183         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1184         PSTxDesc head_td;
1185         u32 dma_idx;
1186         unsigned long flags;
1187
1188         spin_lock_irqsave(&priv->lock, flags);
1189
1190         if (ieee80211_is_data(hdr->frame_control))
1191                 dma_idx = TYPE_AC0DMA;
1192         else
1193                 dma_idx = TYPE_TXDMA0;
1194
1195         if (AVAIL_TD(priv, dma_idx) < 1) {
1196                 spin_unlock_irqrestore(&priv->lock, flags);
1197                 return -ENOMEM;
1198         }
1199
1200         head_td = priv->apCurrTD[dma_idx];
1201
1202         head_td->m_td1TD1.byTCR = 0;
1203
1204         head_td->pTDInfo->skb = skb;
1205
1206         if (dma_idx == TYPE_AC0DMA)
1207                 head_td->pTDInfo->byFlags = TD_FLAGS_NETIF_SKB;
1208
1209         priv->apCurrTD[dma_idx] = head_td->next;
1210
1211         spin_unlock_irqrestore(&priv->lock, flags);
1212
1213         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1214
1215         if (MACbIsRegBitsOn(priv->PortOffset, MAC_REG_PSCTL, PSCTL_PS))
1216                 MACbPSWakeup(priv->PortOffset);
1217
1218         spin_lock_irqsave(&priv->lock, flags);
1219
1220         priv->bPWBitOn = false;
1221
1222         /* Set TSR1 & ReqCount in TxDescHead */
1223         head_td->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP | EDMSDU);
1224         head_td->m_td1TD1.wReqCount =
1225                         cpu_to_le16((u16)head_td->pTDInfo->dwReqCount);
1226
1227         head_td->buff_addr = cpu_to_le32(head_td->pTDInfo->skb_dma);
1228
1229         /* Poll Transmit the adapter */
1230         wmb();
1231         head_td->m_td0TD0.f1Owner = OWNED_BY_NIC;
1232         wmb(); /* second memory barrier */
1233
1234         if (head_td->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB)
1235                 MACvTransmitAC0(priv->PortOffset);
1236         else
1237                 MACvTransmit0(priv->PortOffset);
1238
1239         priv->iTDUsed[dma_idx]++;
1240
1241         spin_unlock_irqrestore(&priv->lock, flags);
1242
1243         return 0;
1244 }
1245
1246 static void vnt_tx_80211(struct ieee80211_hw *hw,
1247                          struct ieee80211_tx_control *control,
1248                          struct sk_buff *skb)
1249 {
1250         struct vnt_private *priv = hw->priv;
1251
1252         ieee80211_stop_queues(hw);
1253
1254         if (vnt_tx_packet(priv, skb)) {
1255                 ieee80211_free_txskb(hw, skb);
1256
1257                 ieee80211_wake_queues(hw);
1258         }
1259 }
1260
1261 static int vnt_start(struct ieee80211_hw *hw)
1262 {
1263         struct vnt_private *priv = hw->priv;
1264         int ret;
1265
1266         priv->rx_buf_sz = PKT_BUF_SZ;
1267         if (!device_init_rings(priv))
1268                 return -ENOMEM;
1269
1270         ret = request_irq(priv->pcid->irq, &device_intr,
1271                           IRQF_SHARED, "vt6655", priv);
1272         if (ret) {
1273                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1274                 return ret;
1275         }
1276
1277         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1278         device_init_rd0_ring(priv);
1279         device_init_rd1_ring(priv);
1280         device_init_td0_ring(priv);
1281         device_init_td1_ring(priv);
1282
1283         device_init_registers(priv);
1284
1285         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1286         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1287
1288         ieee80211_wake_queues(hw);
1289
1290         return 0;
1291 }
1292
1293 static void vnt_stop(struct ieee80211_hw *hw)
1294 {
1295         struct vnt_private *priv = hw->priv;
1296
1297         ieee80211_stop_queues(hw);
1298
1299         MACbShutdown(priv->PortOffset);
1300         MACbSoftwareReset(priv->PortOffset);
1301         CARDbRadioPowerOff(priv);
1302
1303         device_free_td0_ring(priv);
1304         device_free_td1_ring(priv);
1305         device_free_rd0_ring(priv);
1306         device_free_rd1_ring(priv);
1307         device_free_rings(priv);
1308
1309         free_irq(priv->pcid->irq, priv);
1310 }
1311
1312 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1313 {
1314         struct vnt_private *priv = hw->priv;
1315
1316         priv->vif = vif;
1317
1318         switch (vif->type) {
1319         case NL80211_IFTYPE_STATION:
1320                 break;
1321         case NL80211_IFTYPE_ADHOC:
1322                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1323
1324                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1325
1326                 break;
1327         case NL80211_IFTYPE_AP:
1328                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1329
1330                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1331
1332                 break;
1333         default:
1334                 return -EOPNOTSUPP;
1335         }
1336
1337         priv->op_mode = vif->type;
1338
1339         return 0;
1340 }
1341
1342 static void vnt_remove_interface(struct ieee80211_hw *hw,
1343                                  struct ieee80211_vif *vif)
1344 {
1345         struct vnt_private *priv = hw->priv;
1346
1347         switch (vif->type) {
1348         case NL80211_IFTYPE_STATION:
1349                 break;
1350         case NL80211_IFTYPE_ADHOC:
1351                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1352                 MACvRegBitsOff(priv->PortOffset,
1353                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1354                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1355                 break;
1356         case NL80211_IFTYPE_AP:
1357                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1358                 MACvRegBitsOff(priv->PortOffset,
1359                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1360                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1361                 break;
1362         default:
1363                 break;
1364         }
1365
1366         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1367 }
1368
1369
1370 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1371 {
1372         struct vnt_private *priv = hw->priv;
1373         struct ieee80211_conf *conf = &hw->conf;
1374         u8 bb_type;
1375
1376         if (changed & IEEE80211_CONF_CHANGE_PS) {
1377                 if (conf->flags & IEEE80211_CONF_PS)
1378                         PSvEnablePowerSaving(priv, conf->listen_interval);
1379                 else
1380                         PSvDisablePowerSaving(priv);
1381         }
1382
1383         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1384             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1385                 set_channel(priv, conf->chandef.chan);
1386
1387                 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
1388                         bb_type = BB_TYPE_11A;
1389                 else
1390                         bb_type = BB_TYPE_11G;
1391
1392                 if (priv->byBBType != bb_type) {
1393                         priv->byBBType = bb_type;
1394
1395                         CARDbSetPhyParameter(priv, priv->byBBType);
1396                 }
1397         }
1398
1399         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1400                 if (priv->byBBType == BB_TYPE_11B)
1401                         priv->wCurrentRate = RATE_1M;
1402                 else
1403                         priv->wCurrentRate = RATE_54M;
1404
1405                 RFbSetPower(priv, priv->wCurrentRate,
1406                             conf->chandef.chan->hw_value);
1407         }
1408
1409         return 0;
1410 }
1411
1412 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1413                 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
1414                 u32 changed)
1415 {
1416         struct vnt_private *priv = hw->priv;
1417
1418         priv->current_aid = conf->aid;
1419
1420         if (changed & BSS_CHANGED_BSSID) {
1421                 unsigned long flags;
1422
1423                 spin_lock_irqsave(&priv->lock, flags);
1424
1425                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1426
1427                 spin_unlock_irqrestore(&priv->lock, flags);
1428         }
1429
1430         if (changed & BSS_CHANGED_BASIC_RATES) {
1431                 priv->basic_rates = conf->basic_rates;
1432
1433                 CARDvUpdateBasicTopRate(priv);
1434
1435                 dev_dbg(&priv->pcid->dev,
1436                         "basic rates %x\n", conf->basic_rates);
1437         }
1438
1439         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1440                 if (conf->use_short_preamble) {
1441                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1442                         priv->byPreambleType = true;
1443                 } else {
1444                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1445                         priv->byPreambleType = false;
1446                 }
1447         }
1448
1449         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1450                 if (conf->use_cts_prot)
1451                         MACvEnableProtectMD(priv->PortOffset);
1452                 else
1453                         MACvDisableProtectMD(priv->PortOffset);
1454         }
1455
1456         if (changed & BSS_CHANGED_ERP_SLOT) {
1457                 if (conf->use_short_slot)
1458                         priv->bShortSlotTime = true;
1459                 else
1460                         priv->bShortSlotTime = false;
1461
1462                 CARDbSetPhyParameter(priv, priv->byBBType);
1463                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1464         }
1465
1466         if (changed & BSS_CHANGED_TXPOWER)
1467                 RFbSetPower(priv, priv->wCurrentRate,
1468                             conf->chandef.chan->hw_value);
1469
1470         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1471                 dev_dbg(&priv->pcid->dev,
1472                         "Beacon enable %d\n", conf->enable_beacon);
1473
1474                 if (conf->enable_beacon) {
1475                         vnt_beacon_enable(priv, vif, conf);
1476
1477                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1478                                       TCR_AUTOBCNTX);
1479                 } else {
1480                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1481                                        TCR_AUTOBCNTX);
1482                 }
1483         }
1484
1485         if (changed & BSS_CHANGED_ASSOC && priv->op_mode != NL80211_IFTYPE_AP) {
1486                 if (conf->assoc) {
1487                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1488                                        conf->sync_tsf);
1489
1490                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1491
1492                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1493                 } else {
1494                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1495                                      TFTCTL_TSFCNTRST);
1496                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1497                                      TFTCTL_TSFCNTREN);
1498                 }
1499         }
1500 }
1501
1502 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1503         struct netdev_hw_addr_list *mc_list)
1504 {
1505         struct vnt_private *priv = hw->priv;
1506         struct netdev_hw_addr *ha;
1507         u64 mc_filter = 0;
1508         u32 bit_nr = 0;
1509
1510         netdev_hw_addr_list_for_each(ha, mc_list) {
1511                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1512
1513                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1514         }
1515
1516         priv->mc_list_count = mc_list->count;
1517
1518         return mc_filter;
1519 }
1520
1521 static void vnt_configure(struct ieee80211_hw *hw,
1522         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
1523 {
1524         struct vnt_private *priv = hw->priv;
1525         u8 rx_mode = 0;
1526
1527         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_PROMISC_IN_BSS |
1528                 FIF_BCN_PRBRESP_PROMISC;
1529
1530         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1531
1532         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1533
1534         if (changed_flags & FIF_PROMISC_IN_BSS) {
1535                 /* unconditionally log net taps */
1536                 if (*total_flags & FIF_PROMISC_IN_BSS)
1537                         rx_mode |= RCR_UNICAST;
1538                 else
1539                         rx_mode &= ~RCR_UNICAST;
1540         }
1541
1542         if (changed_flags & FIF_ALLMULTI) {
1543                 if (*total_flags & FIF_ALLMULTI) {
1544                         unsigned long flags;
1545
1546                         spin_lock_irqsave(&priv->lock, flags);
1547
1548                         if (priv->mc_list_count > 2) {
1549                                 MACvSelectPage1(priv->PortOffset);
1550
1551                                 VNSvOutPortD(priv->PortOffset +
1552                                              MAC_REG_MAR0, 0xffffffff);
1553                                 VNSvOutPortD(priv->PortOffset +
1554                                             MAC_REG_MAR0 + 4, 0xffffffff);
1555
1556                                 MACvSelectPage0(priv->PortOffset);
1557                         } else {
1558                                 MACvSelectPage1(priv->PortOffset);
1559
1560                                 VNSvOutPortD(priv->PortOffset +
1561                                              MAC_REG_MAR0, (u32)multicast);
1562                                 VNSvOutPortD(priv->PortOffset +
1563                                              MAC_REG_MAR0 + 4,
1564                                              (u32)(multicast >> 32));
1565
1566                                 MACvSelectPage0(priv->PortOffset);
1567                         }
1568
1569                         spin_unlock_irqrestore(&priv->lock, flags);
1570
1571                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1572                 } else {
1573                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1574                 }
1575         }
1576
1577         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1578                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1579
1580                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1581                         rx_mode &= ~RCR_BSSID;
1582                 else
1583                         rx_mode |= RCR_BSSID;
1584         }
1585
1586         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1587
1588         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1589 }
1590
1591 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1592         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1593                 struct ieee80211_key_conf *key)
1594 {
1595         struct vnt_private *priv = hw->priv;
1596
1597         switch (cmd) {
1598         case SET_KEY:
1599                 if (vnt_set_keys(hw, sta, vif, key))
1600                         return -EOPNOTSUPP;
1601                 break;
1602         case DISABLE_KEY:
1603                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1604                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1605         default:
1606                 break;
1607         }
1608
1609         return 0;
1610 }
1611
1612 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1613 {
1614         struct vnt_private *priv = hw->priv;
1615         u64 tsf;
1616
1617         CARDbGetCurrentTSF(priv, &tsf);
1618
1619         return tsf;
1620 }
1621
1622 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1623                         u64 tsf)
1624 {
1625         struct vnt_private *priv = hw->priv;
1626
1627         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1628 }
1629
1630 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1631 {
1632         struct vnt_private *priv = hw->priv;
1633
1634         /* reset TSF counter */
1635         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1636 }
1637
1638 static const struct ieee80211_ops vnt_mac_ops = {
1639         .tx                     = vnt_tx_80211,
1640         .start                  = vnt_start,
1641         .stop                   = vnt_stop,
1642         .add_interface          = vnt_add_interface,
1643         .remove_interface       = vnt_remove_interface,
1644         .config                 = vnt_config,
1645         .bss_info_changed       = vnt_bss_info_changed,
1646         .prepare_multicast      = vnt_prepare_multicast,
1647         .configure_filter       = vnt_configure,
1648         .set_key                = vnt_set_key,
1649         .get_tsf                = vnt_get_tsf,
1650         .set_tsf                = vnt_set_tsf,
1651         .reset_tsf              = vnt_reset_tsf,
1652 };
1653
1654 static int vnt_init(struct vnt_private *priv)
1655 {
1656         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1657
1658         vnt_init_bands(priv);
1659
1660         if (ieee80211_register_hw(priv->hw))
1661                 return -ENODEV;
1662
1663         priv->mac_hw = true;
1664
1665         CARDbRadioPowerOff(priv);
1666
1667         return 0;
1668 }
1669
1670 static int
1671 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1672 {
1673         PCHIP_INFO  pChip_info = (PCHIP_INFO)ent->driver_data;
1674         struct vnt_private *priv;
1675         struct ieee80211_hw *hw;
1676         struct wiphy *wiphy;
1677         int         rc;
1678
1679         dev_notice(&pcid->dev,
1680                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1681
1682         dev_notice(&pcid->dev,
1683                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1684
1685         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1686         if (!hw) {
1687                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1688                 return -ENOMEM;
1689         }
1690
1691         priv = hw->priv;
1692
1693         vt6655_init_info(pcid, &priv, pChip_info);
1694
1695         priv->hw = hw;
1696
1697         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1698
1699         if (pci_enable_device(pcid)) {
1700                 device_free_info(priv);
1701                 return -ENODEV;
1702         }
1703
1704         dev_dbg(&pcid->dev,
1705                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1706
1707         if (!device_get_pci_info(priv, pcid)) {
1708                 dev_err(&pcid->dev, ": Failed to find PCI device.\n");
1709                 device_free_info(priv);
1710                 return -ENODEV;
1711         }
1712
1713 #ifdef  DEBUG
1714         dev_dbg(&pcid->dev,
1715                 "after get pci_info memaddr is %x, io addr is %x,io_size is %d\n",
1716                 priv->memaddr, priv->ioaddr, priv->io_size);
1717         {
1718                 int i;
1719                 u32 bar, len;
1720                 u32 address[] = {
1721                         PCI_BASE_ADDRESS_0,
1722                         PCI_BASE_ADDRESS_1,
1723                         PCI_BASE_ADDRESS_2,
1724                         PCI_BASE_ADDRESS_3,
1725                         PCI_BASE_ADDRESS_4,
1726                         PCI_BASE_ADDRESS_5,
1727                         0};
1728                 for (i = 0; address[i]; i++) {
1729                         pci_read_config_dword(pcid, address[i], &bar);
1730
1731                         dev_dbg(&pcid->dev, "bar %d is %x\n", i, bar);
1732
1733                         if (!bar) {
1734                                 dev_dbg(&pcid->dev,
1735                                         "bar %d not implemented\n", i);
1736                                 continue;
1737                         }
1738
1739                         if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
1740                                 /* This is IO */
1741
1742                                 len = bar & (PCI_BASE_ADDRESS_IO_MASK & 0xffff);
1743                                 len = len & ~(len - 1);
1744
1745                                 dev_dbg(&pcid->dev,
1746                                         "IO space:  len in IO %x, BAR %d\n",
1747                                         len, i);
1748                         } else {
1749                                 len = bar & 0xfffffff0;
1750                                 len = ~len + 1;
1751
1752                                 dev_dbg(&pcid->dev,
1753                                         "len in MEM %x, BAR %d\n", len, i);
1754                         }
1755                 }
1756         }
1757 #endif
1758
1759         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1760                                    priv->io_size);
1761         if (!priv->PortOffset) {
1762                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1763                 device_free_info(priv);
1764                 return -ENODEV;
1765         }
1766
1767         rc = pci_request_regions(pcid, DEVICE_NAME);
1768         if (rc) {
1769                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1770                 device_free_info(priv);
1771                 return -ENODEV;
1772         }
1773
1774         /* do reset */
1775         if (!MACbSoftwareReset(priv->PortOffset)) {
1776                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1777                 device_free_info(priv);
1778                 return -ENODEV;
1779         }
1780         /* initial to reload eeprom */
1781         MACvInitialize(priv->PortOffset);
1782         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1783
1784         /* Get RFType */
1785         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1786         priv->byRFType &= RF_MASK;
1787
1788         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1789
1790         device_get_options(priv);
1791         device_set_options(priv);
1792         /* Mask out the options cannot be set to the chip */
1793         priv->sOpts.flags &= pChip_info->flags;
1794
1795         /* Enable the chip specified capabilities */
1796         priv->flags = priv->sOpts.flags | (pChip_info->flags & 0xff000000UL);
1797
1798         wiphy = priv->hw->wiphy;
1799
1800         wiphy->frag_threshold = FRAG_THRESH_DEF;
1801         wiphy->rts_threshold = RTS_THRESH_DEF;
1802         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1803                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1804
1805         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1806                 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
1807                 IEEE80211_HW_SIGNAL_DBM |
1808                 IEEE80211_HW_TIMING_BEACON_ONLY;
1809
1810         priv->hw->max_signal = 100;
1811
1812         if (vnt_init(priv))
1813                 return -ENODEV;
1814
1815         device_print_info(priv);
1816         pci_set_drvdata(pcid, priv);
1817
1818         return 0;
1819 }
1820
1821 /*------------------------------------------------------------------*/
1822
1823 #ifdef CONFIG_PM
1824 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1825 {
1826         struct vnt_private *priv = pci_get_drvdata(pcid);
1827         unsigned long flags;
1828
1829         spin_lock_irqsave(&priv->lock, flags);
1830
1831         pci_save_state(pcid);
1832
1833         MACbShutdown(priv->PortOffset);
1834
1835         pci_disable_device(pcid);
1836         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1837
1838         spin_unlock_irqrestore(&priv->lock, flags);
1839
1840         return 0;
1841 }
1842
1843 static int vt6655_resume(struct pci_dev *pcid)
1844 {
1845
1846         pci_set_power_state(pcid, PCI_D0);
1847         pci_enable_wake(pcid, PCI_D0, 0);
1848         pci_restore_state(pcid);
1849
1850         return 0;
1851 }
1852 #endif
1853
1854 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1855
1856 static struct pci_driver device_driver = {
1857         .name = DEVICE_NAME,
1858         .id_table = vt6655_pci_id_table,
1859         .probe = vt6655_probe,
1860         .remove = vt6655_remove,
1861 #ifdef CONFIG_PM
1862         .suspend = vt6655_suspend,
1863         .resume = vt6655_resume,
1864 #endif
1865 };
1866
1867 static int __init vt6655_init_module(void)
1868 {
1869         int ret;
1870
1871         ret = pci_register_driver(&device_driver);
1872 #ifdef CONFIG_PM
1873         if (ret >= 0)
1874                 register_reboot_notifier(&device_notifier);
1875 #endif
1876
1877         return ret;
1878 }
1879
1880 static void __exit vt6655_cleanup_module(void)
1881 {
1882 #ifdef CONFIG_PM
1883         unregister_reboot_notifier(&device_notifier);
1884 #endif
1885         pci_unregister_driver(&device_driver);
1886 }
1887
1888 module_init(vt6655_init_module);
1889 module_exit(vt6655_cleanup_module);
1890
1891 #ifdef CONFIG_PM
1892 static int
1893 device_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
1894 {
1895         struct pci_dev *pdev = NULL;
1896
1897         switch (event) {
1898         case SYS_DOWN:
1899         case SYS_HALT:
1900         case SYS_POWER_OFF:
1901                 for_each_pci_dev(pdev) {
1902                         if (pci_dev_driver(pdev) == &device_driver) {
1903                                 if (pci_get_drvdata(pdev))
1904                                         vt6655_suspend(pdev, PMSG_HIBERNATE);
1905                         }
1906                 }
1907         }
1908         return NOTIFY_DONE;
1909 }
1910 #endif