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
 811                 if (!pRD->pRDInfo->skb)
 812                         break;
 813
 814                 if (vnt_receive_frame(pDevice, pRD)) {
 815                         if (!device_alloc_rx_buf(pDevice, pRD)) {
 816                                 dev_err(&pDevice->pcid->dev,
 817                                         "can not allocate rx buf\n");
 818                                 break;
 819                         }
 820                 }
 821                 pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 822         }
 823
 824         pDevice->pCurrRD[uIdx] = pRD;
 825
 826         return works;
 827 }
 828
 829 static bool device_alloc_rx_buf(struct vnt_private *pDevice, PSRxDesc pRD)
 830 {
 831         PDEVICE_RD_INFO pRDInfo = pRD->pRDInfo;
 832
 833         pRDInfo->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 834         if (pRDInfo->skb == NULL)
 835                 return false;
 836         ASSERT(pRDInfo->skb);
 837
 838         pRDInfo->skb_dma =
 839                 dma_map_single(&pDevice->pcid->dev,
 840                                skb_put(pRDInfo->skb, skb_tailroom(pRDInfo->skb)),
 841                                pDevice->rx_buf_sz, DMA_FROM_DEVICE);
 842
 843         *((unsigned int *)&(pRD->m_rd0RD0)) = 0; /* FIX cast */
 844
 845         pRD->m_rd0RD0.wResCount = cpu_to_le16(pDevice->rx_buf_sz);
 846         pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 847         pRD->m_rd1RD1.wReqCount = cpu_to_le16(pDevice->rx_buf_sz);
 848         pRD->buff_addr = cpu_to_le32(pRDInfo->skb_dma);
 849
 850         return true;
 851 }
 852
 853 static const u8 fallback_rate0[5][5] = {
 854         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 855         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 856         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 857         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 858         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 859 };
 860
 861 static const u8 fallback_rate1[5][5] = {
 862         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 863         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 864         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 865         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 866         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 867 };
 868
 869 static int vnt_int_report_rate(struct vnt_private *priv,
 870                                PDEVICE_TD_INFO context, u8 tsr0, u8 tsr1)
 871 {
 872         struct vnt_tx_fifo_head *fifo_head;
 873         struct ieee80211_tx_info *info;
 874         struct ieee80211_rate *rate;
 875         u16 fb_option;
 876         u8 tx_retry = (tsr0 & TSR0_NCR);
 877         s8 idx;
 878
 879         if (!context)
 880                 return -ENOMEM;
 881
 882         if (!context->skb)
 883                 return -EINVAL;
 884
 885         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 886         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 887                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 888
 889         info = IEEE80211_SKB_CB(context->skb);
 890         idx = info->control.rates[0].idx;
 891
 892         if (fb_option && !(tsr1 & TSR1_TERR)) {
 893                 u8 tx_rate;
 894                 u8 retry = tx_retry;
 895
 896                 rate = ieee80211_get_tx_rate(priv->hw, info);
 897                 tx_rate = rate->hw_value - RATE_18M;
 898
 899                 if (retry > 4)
 900                         retry = 4;
 901
 902                 if (fb_option & FIFOCTL_AUTO_FB_0)
 903                         tx_rate = fallback_rate0[tx_rate][retry];
 904                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 905                         tx_rate = fallback_rate1[tx_rate][retry];
 906
 907                 if (info->band == IEEE80211_BAND_5GHZ)
 908                         idx = tx_rate - RATE_6M;
 909                 else
 910                         idx = tx_rate;
 911         }
 912
 913         ieee80211_tx_info_clear_status(info);
 914
 915         info->status.rates[0].count = tx_retry;
 916
 917         if (!(tsr1 & TSR1_TERR)) {
 918                 info->status.rates[0].idx = idx;
 919
 920                 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 921                         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 922                 else
 923                         info->flags |= IEEE80211_TX_STAT_ACK;
 924         }
 925
 926         return 0;
 927 }
 928
 929 static int device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 930 {
 931         PSTxDesc                 pTD;
 932         int                      works = 0;
 933         unsigned char byTsr0;
 934         unsigned char byTsr1;
 935
 936         for (pTD = pDevice->apTailTD[uIdx]; pDevice->iTDUsed[uIdx] > 0; pTD = pTD->next) {
 937                 if (pTD->m_td0TD0.f1Owner == OWNED_BY_NIC)
 938                         break;
 939                 if (works++ > 15)
 940                         break;
 941
 942                 byTsr0 = pTD->m_td0TD0.byTSR0;
 943                 byTsr1 = pTD->m_td0TD0.byTSR1;
 944
 945                 /* Only the status of first TD in the chain is correct */
 946                 if (pTD->m_td1TD1.byTCR & TCR_STP) {
 947                         if ((pTD->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB) != 0) {
 948                                 if (!(byTsr1 & TSR1_TERR)) {
 949                                         if (byTsr0 != 0) {
 950                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
 951                                                          (int)uIdx, byTsr1,
 952                                                          byTsr0);
 953                                         }
 954                                 } else {
 955                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
 956                                                  (int)uIdx, byTsr1, byTsr0);
 957                                 }
 958                         }
 959
 960                         if (byTsr1 & TSR1_TERR) {
 961                                 if ((pTD->pTDInfo->byFlags & TD_FLAGS_PRIV_SKB) != 0) {
 962                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
 963                                                  (int)uIdx, byTsr1, byTsr0);
 964                                 }
 965                         }
 966
 967                         vnt_int_report_rate(pDevice, pTD->pTDInfo, byTsr0, byTsr1);
 968
 969                         device_free_tx_buf(pDevice, pTD);
 970                         pDevice->iTDUsed[uIdx]--;
 971                 }
 972         }
 973
 974         pDevice->apTailTD[uIdx] = pTD;
 975
 976         return works;
 977 }
 978
 979 static void device_error(struct vnt_private *pDevice, unsigned short status)
 980 {
 981         if (status & ISR_FETALERR) {
 982                 dev_err(&pDevice->pcid->dev, "Hardware fatal error\n");
 983
 984                 MACbShutdown(pDevice->PortOffset);
 985                 return;
 986         }
 987 }
 988
 989 static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc)
 990 {
 991         PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 992         struct sk_buff *skb = pTDInfo->skb;
 993
 994         /* pre-allocated buf_dma can't be unmapped. */
 995         if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma)) {
 996                 dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
 997                                  skb->len, DMA_TO_DEVICE);
 998         }
 999
1000         if (skb)
1001                 ieee80211_tx_status_irqsafe(pDevice->hw, skb);
1002
1003         pTDInfo->skb_dma = 0;
1004         pTDInfo->skb = NULL;
1005         pTDInfo->byFlags = 0;
1006 }
1007
1008 static void vnt_check_bb_vga(struct vnt_private *priv)
1009 {
1010         long dbm;
1011         int i;
1012
1013         if (!priv->bUpdateBBVGA)
1014                 return;
1015
1016         if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1017                 return;
1018
1019         if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
1020                 return;
1021
1022         RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);
1023
1024         for (i = 0; i < BB_VGA_LEVEL; i++) {
1025                 if (dbm < priv->ldBmThreshold[i]) {
1026                         priv->byBBVGANew = priv->abyBBVGA[i];
1027                         break;
1028                 }
1029         }
1030
1031         if (priv->byBBVGANew == priv->byBBVGACurrent) {
1032                 priv->uBBVGADiffCount = 1;
1033                 return;
1034         }
1035
1036         priv->uBBVGADiffCount++;
1037
1038         if (priv->uBBVGADiffCount == 1) {
1039                 /* first VGA diff gain */
1040                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1041
1042                 dev_dbg(&priv->pcid->dev,
1043                         "First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1044                         (int)dbm, priv->byBBVGANew,
1045                         priv->byBBVGACurrent,
1046                         (int)priv->uBBVGADiffCount);
1047         }
1048
1049         if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1050                 dev_dbg(&priv->pcid->dev,
1051                         "RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1052                         (int)dbm, priv->byBBVGANew,
1053                         priv->byBBVGACurrent,
1054                         (int)priv->uBBVGADiffCount);
1055
1056                 BBvSetVGAGainOffset(priv, priv->byBBVGANew);
1057         }
1058 }
1059
1060 static  irqreturn_t  device_intr(int irq,  void *dev_instance)
1061 {
1062         struct vnt_private *pDevice = dev_instance;
1063         int             max_count = 0;
1064         unsigned long dwMIBCounter = 0;
1065         unsigned char byOrgPageSel = 0;
1066         int             handled = 0;
1067         unsigned long flags;
1068
1069         MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1070
1071         if (pDevice->dwIsr == 0)
1072                 return IRQ_RETVAL(handled);
1073
1074         if (pDevice->dwIsr == 0xffffffff) {
1075                 pr_debug("dwIsr = 0xffff\n");
1076                 return IRQ_RETVAL(handled);
1077         }
1078
1079         handled = 1;
1080         MACvIntDisable(pDevice->PortOffset);
1081
1082         spin_lock_irqsave(&pDevice->lock, flags);
1083
1084         /* Make sure current page is 0 */
1085         VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
1086         if (byOrgPageSel == 1)
1087                 MACvSelectPage0(pDevice->PortOffset);
1088         else
1089                 byOrgPageSel = 0;
1090
1091         MACvReadMIBCounter(pDevice->PortOffset, &dwMIBCounter);
1092         /*
1093          * TBD....
1094          * Must do this after doing rx/tx, cause ISR bit is slow
1095          * than RD/TD write back
1096          * update ISR counter
1097          */
1098         STAvUpdate802_11Counter(&pDevice->s802_11Counter, &pDevice->scStatistic, dwMIBCounter);
1099         while (pDevice->dwIsr != 0) {
1100                 STAvUpdateIsrStatCounter(&pDevice->scStatistic, pDevice->dwIsr);
1101                 MACvWriteISR(pDevice->PortOffset, pDevice->dwIsr);
1102
1103                 if (pDevice->dwIsr & ISR_FETALERR) {
1104                         pr_debug(" ISR_FETALERR\n");
1105                         VNSvOutPortB(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1106                         VNSvOutPortW(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1107                         device_error(pDevice, pDevice->dwIsr);
1108                 }
1109
1110                 if (pDevice->dwIsr & ISR_TBTT) {
1111                         if (pDevice->vif &&
1112                             pDevice->op_mode != NL80211_IFTYPE_ADHOC)
1113                                 vnt_check_bb_vga(pDevice);
1114
1115                         pDevice->bBeaconSent = false;
1116                         if (pDevice->bEnablePSMode)
1117                                 PSbIsNextTBTTWakeUp((void *)pDevice);
1118
1119                         if ((pDevice->op_mode == NL80211_IFTYPE_AP ||
1120                             pDevice->op_mode == NL80211_IFTYPE_ADHOC) &&
1121                             pDevice->vif->bss_conf.enable_beacon) {
1122                                 MACvOneShotTimer1MicroSec(pDevice->PortOffset,
1123                                                           (pDevice->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1124                         }
1125
1126                         /* TODO: adhoc PS mode */
1127
1128                 }
1129
1130                 if (pDevice->dwIsr & ISR_BNTX) {
1131                         if (pDevice->op_mode == NL80211_IFTYPE_ADHOC) {
1132                                 pDevice->bIsBeaconBufReadySet = false;
1133                                 pDevice->cbBeaconBufReadySetCnt = 0;
1134                         }
1135
1136                         pDevice->bBeaconSent = true;
1137                 }
1138
1139                 if (pDevice->dwIsr & ISR_RXDMA0)
1140                         max_count += device_rx_srv(pDevice, TYPE_RXDMA0);
1141
1142                 if (pDevice->dwIsr & ISR_RXDMA1)
1143                         max_count += device_rx_srv(pDevice, TYPE_RXDMA1);
1144
1145                 if (pDevice->dwIsr & ISR_TXDMA0)
1146                         max_count += device_tx_srv(pDevice, TYPE_TXDMA0);
1147
1148                 if (pDevice->dwIsr & ISR_AC0DMA)
1149                         max_count += device_tx_srv(pDevice, TYPE_AC0DMA);
1150
1151                 if (pDevice->dwIsr & ISR_SOFTTIMER1) {
1152                         if (pDevice->vif) {
1153                                 if (pDevice->vif->bss_conf.enable_beacon)
1154                                         vnt_beacon_make(pDevice, pDevice->vif);
1155                         }
1156                 }
1157
1158                 /* If both buffers available wake the queue */
1159                 if (pDevice->vif) {
1160                         if (AVAIL_TD(pDevice, TYPE_TXDMA0) &&
1161                             AVAIL_TD(pDevice, TYPE_AC0DMA) &&
1162                             ieee80211_queue_stopped(pDevice->hw, 0))
1163                                 ieee80211_wake_queues(pDevice->hw);
1164                 }
1165
1166                 MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1167
1168                 MACvReceive0(pDevice->PortOffset);
1169                 MACvReceive1(pDevice->PortOffset);
1170
1171                 if (max_count > pDevice->sOpts.int_works)
1172                         break;
1173         }
1174
1175         if (byOrgPageSel == 1)
1176                 MACvSelectPage1(pDevice->PortOffset);
1177
1178         spin_unlock_irqrestore(&pDevice->lock, flags);
1179
1180         MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
1181
1182         return IRQ_RETVAL(handled);
1183 }
1184
1185 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1186 {
1187         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1188         PSTxDesc head_td;
1189         u32 dma_idx;
1190         unsigned long flags;
1191
1192         spin_lock_irqsave(&priv->lock, flags);
1193
1194         if (ieee80211_is_data(hdr->frame_control))
1195                 dma_idx = TYPE_AC0DMA;
1196         else
1197                 dma_idx = TYPE_TXDMA0;
1198
1199         if (AVAIL_TD(priv, dma_idx) < 1) {
1200                 spin_unlock_irqrestore(&priv->lock, flags);
1201                 return -ENOMEM;
1202         }
1203
1204         head_td = priv->apCurrTD[dma_idx];
1205
1206         head_td->m_td1TD1.byTCR = 0;
1207
1208         head_td->pTDInfo->skb = skb;
1209
1210         if (dma_idx == TYPE_AC0DMA)
1211                 head_td->pTDInfo->byFlags = TD_FLAGS_NETIF_SKB;
1212
1213         priv->apCurrTD[dma_idx] = head_td->next;
1214
1215         spin_unlock_irqrestore(&priv->lock, flags);
1216
1217         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1218
1219         if (MACbIsRegBitsOn(priv->PortOffset, MAC_REG_PSCTL, PSCTL_PS))
1220                 MACbPSWakeup(priv->PortOffset);
1221
1222         spin_lock_irqsave(&priv->lock, flags);
1223
1224         priv->bPWBitOn = false;
1225
1226         /* Set TSR1 & ReqCount in TxDescHead */
1227         head_td->m_td1TD1.byTCR |= (TCR_STP | TCR_EDP | EDMSDU);
1228         head_td->m_td1TD1.wReqCount =
1229                         cpu_to_le16((u16)head_td->pTDInfo->dwReqCount);
1230
1231         head_td->buff_addr = cpu_to_le32(head_td->pTDInfo->skb_dma);
1232
1233         /* Poll Transmit the adapter */
1234         wmb();
1235         head_td->m_td0TD0.f1Owner = OWNED_BY_NIC;
1236         wmb(); /* second memory barrier */
1237
1238         if (head_td->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB)
1239                 MACvTransmitAC0(priv->PortOffset);
1240         else
1241                 MACvTransmit0(priv->PortOffset);
1242
1243         priv->iTDUsed[dma_idx]++;
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 && conf->bssid) {
1425                 unsigned long flags;
1426
1427                 spin_lock_irqsave(&priv->lock, flags);
1428
1429                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1430
1431                 spin_unlock_irqrestore(&priv->lock, flags);
1432         }
1433
1434         if (changed & BSS_CHANGED_BASIC_RATES) {
1435                 priv->basic_rates = conf->basic_rates;
1436
1437                 CARDvUpdateBasicTopRate(priv);
1438
1439                 dev_dbg(&priv->pcid->dev,
1440                         "basic rates %x\n", conf->basic_rates);
1441         }
1442
1443         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1444                 if (conf->use_short_preamble) {
1445                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1446                         priv->byPreambleType = true;
1447                 } else {
1448                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1449                         priv->byPreambleType = false;
1450                 }
1451         }
1452
1453         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1454                 if (conf->use_cts_prot)
1455                         MACvEnableProtectMD(priv->PortOffset);
1456                 else
1457                         MACvDisableProtectMD(priv->PortOffset);
1458         }
1459
1460         if (changed & BSS_CHANGED_ERP_SLOT) {
1461                 if (conf->use_short_slot)
1462                         priv->bShortSlotTime = true;
1463                 else
1464                         priv->bShortSlotTime = false;
1465
1466                 CARDbSetPhyParameter(priv, priv->byBBType);
1467                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1468         }
1469
1470         if (changed & BSS_CHANGED_TXPOWER)
1471                 RFbSetPower(priv, priv->wCurrentRate,
1472                             conf->chandef.chan->hw_value);
1473
1474         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1475                 dev_dbg(&priv->pcid->dev,
1476                         "Beacon enable %d\n", conf->enable_beacon);
1477
1478                 if (conf->enable_beacon) {
1479                         vnt_beacon_enable(priv, vif, conf);
1480
1481                         MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
1482                                       TCR_AUTOBCNTX);
1483                 } else {
1484                         MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
1485                                        TCR_AUTOBCNTX);
1486                 }
1487         }
1488
1489         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
1490             priv->op_mode != NL80211_IFTYPE_AP) {
1491                 if (conf->assoc && conf->beacon_rate) {
1492                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1493                                        conf->sync_tsf);
1494
1495                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1496
1497                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1498                 } else {
1499                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1500                                      TFTCTL_TSFCNTRST);
1501                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1502                                      TFTCTL_TSFCNTREN);
1503                 }
1504         }
1505 }
1506
1507 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1508         struct netdev_hw_addr_list *mc_list)
1509 {
1510         struct vnt_private *priv = hw->priv;
1511         struct netdev_hw_addr *ha;
1512         u64 mc_filter = 0;
1513         u32 bit_nr = 0;
1514
1515         netdev_hw_addr_list_for_each(ha, mc_list) {
1516                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1517
1518                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1519         }
1520
1521         priv->mc_list_count = mc_list->count;
1522
1523         return mc_filter;
1524 }
1525
1526 static void vnt_configure(struct ieee80211_hw *hw,
1527         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
1528 {
1529         struct vnt_private *priv = hw->priv;
1530         u8 rx_mode = 0;
1531
1532         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_PROMISC_IN_BSS |
1533                 FIF_BCN_PRBRESP_PROMISC;
1534
1535         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1536
1537         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1538
1539         if (changed_flags & FIF_PROMISC_IN_BSS) {
1540                 /* unconditionally log net taps */
1541                 if (*total_flags & FIF_PROMISC_IN_BSS)
1542                         rx_mode |= RCR_UNICAST;
1543                 else
1544                         rx_mode &= ~RCR_UNICAST;
1545         }
1546
1547         if (changed_flags & FIF_ALLMULTI) {
1548                 if (*total_flags & FIF_ALLMULTI) {
1549                         unsigned long flags;
1550
1551                         spin_lock_irqsave(&priv->lock, flags);
1552
1553                         if (priv->mc_list_count > 2) {
1554                                 MACvSelectPage1(priv->PortOffset);
1555
1556                                 VNSvOutPortD(priv->PortOffset +
1557                                              MAC_REG_MAR0, 0xffffffff);
1558                                 VNSvOutPortD(priv->PortOffset +
1559                                             MAC_REG_MAR0 + 4, 0xffffffff);
1560
1561                                 MACvSelectPage0(priv->PortOffset);
1562                         } else {
1563                                 MACvSelectPage1(priv->PortOffset);
1564
1565                                 VNSvOutPortD(priv->PortOffset +
1566                                              MAC_REG_MAR0, (u32)multicast);
1567                                 VNSvOutPortD(priv->PortOffset +
1568                                              MAC_REG_MAR0 + 4,
1569                                              (u32)(multicast >> 32));
1570
1571                                 MACvSelectPage0(priv->PortOffset);
1572                         }
1573
1574                         spin_unlock_irqrestore(&priv->lock, flags);
1575
1576                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1577                 } else {
1578                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1579                 }
1580         }
1581
1582         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1583                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1584
1585                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1586                         rx_mode &= ~RCR_BSSID;
1587                 else
1588                         rx_mode |= RCR_BSSID;
1589         }
1590
1591         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1592
1593         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1594 }
1595
1596 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1597         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1598                 struct ieee80211_key_conf *key)
1599 {
1600         struct vnt_private *priv = hw->priv;
1601
1602         switch (cmd) {
1603         case SET_KEY:
1604                 if (vnt_set_keys(hw, sta, vif, key))
1605                         return -EOPNOTSUPP;
1606                 break;
1607         case DISABLE_KEY:
1608                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1609                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1610         default:
1611                 break;
1612         }
1613
1614         return 0;
1615 }
1616
1617 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1618 {
1619         struct vnt_private *priv = hw->priv;
1620         u64 tsf;
1621
1622         CARDbGetCurrentTSF(priv, &tsf);
1623
1624         return tsf;
1625 }
1626
1627 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1628                         u64 tsf)
1629 {
1630         struct vnt_private *priv = hw->priv;
1631
1632         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1633 }
1634
1635 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1636 {
1637         struct vnt_private *priv = hw->priv;
1638
1639         /* reset TSF counter */
1640         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1641 }
1642
1643 static const struct ieee80211_ops vnt_mac_ops = {
1644         .tx                     = vnt_tx_80211,
1645         .start                  = vnt_start,
1646         .stop                   = vnt_stop,
1647         .add_interface          = vnt_add_interface,
1648         .remove_interface       = vnt_remove_interface,
1649         .config                 = vnt_config,
1650         .bss_info_changed       = vnt_bss_info_changed,
1651         .prepare_multicast      = vnt_prepare_multicast,
1652         .configure_filter       = vnt_configure,
1653         .set_key                = vnt_set_key,
1654         .get_tsf                = vnt_get_tsf,
1655         .set_tsf                = vnt_set_tsf,
1656         .reset_tsf              = vnt_reset_tsf,
1657 };
1658
1659 static int vnt_init(struct vnt_private *priv)
1660 {
1661         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1662
1663         vnt_init_bands(priv);
1664
1665         if (ieee80211_register_hw(priv->hw))
1666                 return -ENODEV;
1667
1668         priv->mac_hw = true;
1669
1670         CARDbRadioPowerOff(priv);
1671
1672         return 0;
1673 }
1674
1675 static int
1676 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1677 {
1678         PCHIP_INFO  pChip_info = (PCHIP_INFO)ent->driver_data;
1679         struct vnt_private *priv;
1680         struct ieee80211_hw *hw;
1681         struct wiphy *wiphy;
1682         int         rc;
1683
1684         dev_notice(&pcid->dev,
1685                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1686
1687         dev_notice(&pcid->dev,
1688                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1689
1690         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1691         if (!hw) {
1692                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1693                 return -ENOMEM;
1694         }
1695
1696         priv = hw->priv;
1697
1698         vt6655_init_info(pcid, &priv, pChip_info);
1699
1700         priv->hw = hw;
1701
1702         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1703
1704         if (pci_enable_device(pcid)) {
1705                 device_free_info(priv);
1706                 return -ENODEV;
1707         }
1708
1709         dev_dbg(&pcid->dev,
1710                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1711
1712         if (!device_get_pci_info(priv, pcid)) {
1713                 dev_err(&pcid->dev, ": Failed to find PCI device.\n");
1714                 device_free_info(priv);
1715                 return -ENODEV;
1716         }
1717
1718 #ifdef  DEBUG
1719         dev_dbg(&pcid->dev,
1720                 "after get pci_info memaddr is %x, io addr is %x,io_size is %d\n",
1721                 priv->memaddr, priv->ioaddr, priv->io_size);
1722         {
1723                 int i;
1724                 u32 bar, len;
1725                 u32 address[] = {
1726                         PCI_BASE_ADDRESS_0,
1727                         PCI_BASE_ADDRESS_1,
1728                         PCI_BASE_ADDRESS_2,
1729                         PCI_BASE_ADDRESS_3,
1730                         PCI_BASE_ADDRESS_4,
1731                         PCI_BASE_ADDRESS_5,
1732                         0};
1733                 for (i = 0; address[i]; i++) {
1734                         pci_read_config_dword(pcid, address[i], &bar);
1735
1736                         dev_dbg(&pcid->dev, "bar %d is %x\n", i, bar);
1737
1738                         if (!bar) {
1739                                 dev_dbg(&pcid->dev,
1740                                         "bar %d not implemented\n", i);
1741                                 continue;
1742                         }
1743
1744                         if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
1745                                 /* This is IO */
1746
1747                                 len = bar & (PCI_BASE_ADDRESS_IO_MASK & 0xffff);
1748                                 len = len & ~(len - 1);
1749
1750                                 dev_dbg(&pcid->dev,
1751                                         "IO space:  len in IO %x, BAR %d\n",
1752                                         len, i);
1753                         } else {
1754                                 len = bar & 0xfffffff0;
1755                                 len = ~len + 1;
1756
1757                                 dev_dbg(&pcid->dev,
1758                                         "len in MEM %x, BAR %d\n", len, i);
1759                         }
1760                 }
1761         }
1762 #endif
1763
1764         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1765                                    priv->io_size);
1766         if (!priv->PortOffset) {
1767                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1768                 device_free_info(priv);
1769                 return -ENODEV;
1770         }
1771
1772         rc = pci_request_regions(pcid, DEVICE_NAME);
1773         if (rc) {
1774                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1775                 device_free_info(priv);
1776                 return -ENODEV;
1777         }
1778
1779         /* do reset */
1780         if (!MACbSoftwareReset(priv->PortOffset)) {
1781                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1782                 device_free_info(priv);
1783                 return -ENODEV;
1784         }
1785         /* initial to reload eeprom */
1786         MACvInitialize(priv->PortOffset);
1787         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1788
1789         /* Get RFType */
1790         priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
1791         priv->byRFType &= RF_MASK;
1792
1793         dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);
1794
1795         device_get_options(priv);
1796         device_set_options(priv);
1797         /* Mask out the options cannot be set to the chip */
1798         priv->sOpts.flags &= pChip_info->flags;
1799
1800         /* Enable the chip specified capabilities */
1801         priv->flags = priv->sOpts.flags | (pChip_info->flags & 0xff000000UL);
1802
1803         wiphy = priv->hw->wiphy;
1804
1805         wiphy->frag_threshold = FRAG_THRESH_DEF;
1806         wiphy->rts_threshold = RTS_THRESH_DEF;
1807         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1808                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1809
1810         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1811                 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
1812                 IEEE80211_HW_SIGNAL_DBM |
1813                 IEEE80211_HW_TIMING_BEACON_ONLY;
1814
1815         priv->hw->max_signal = 100;
1816
1817         if (vnt_init(priv))
1818                 return -ENODEV;
1819
1820         device_print_info(priv);
1821         pci_set_drvdata(pcid, priv);
1822
1823         return 0;
1824 }
1825
1826 /*------------------------------------------------------------------*/
1827
1828 #ifdef CONFIG_PM
1829 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1830 {
1831         struct vnt_private *priv = pci_get_drvdata(pcid);
1832         unsigned long flags;
1833
1834         spin_lock_irqsave(&priv->lock, flags);
1835
1836         pci_save_state(pcid);
1837
1838         MACbShutdown(priv->PortOffset);
1839
1840         pci_disable_device(pcid);
1841         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1842
1843         spin_unlock_irqrestore(&priv->lock, flags);
1844
1845         return 0;
1846 }
1847
1848 static int vt6655_resume(struct pci_dev *pcid)
1849 {
1850
1851         pci_set_power_state(pcid, PCI_D0);
1852         pci_enable_wake(pcid, PCI_D0, 0);
1853         pci_restore_state(pcid);
1854
1855         return 0;
1856 }
1857 #endif
1858
1859 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1860
1861 static struct pci_driver device_driver = {
1862         .name = DEVICE_NAME,
1863         .id_table = vt6655_pci_id_table,
1864         .probe = vt6655_probe,
1865         .remove = vt6655_remove,
1866 #ifdef CONFIG_PM
1867         .suspend = vt6655_suspend,
1868         .resume = vt6655_resume,
1869 #endif
1870 };
1871
1872 static int __init vt6655_init_module(void)
1873 {
1874         int ret;
1875
1876         ret = pci_register_driver(&device_driver);
1877 #ifdef CONFIG_PM
1878         if (ret >= 0)
1879                 register_reboot_notifier(&device_notifier);
1880 #endif
1881
1882         return ret;
1883 }
1884
1885 static void __exit vt6655_cleanup_module(void)
1886 {
1887 #ifdef CONFIG_PM
1888         unregister_reboot_notifier(&device_notifier);
1889 #endif
1890         pci_unregister_driver(&device_driver);
1891 }
1892
1893 module_init(vt6655_init_module);
1894 module_exit(vt6655_cleanup_module);
1895
1896 #ifdef CONFIG_PM
1897 static int
1898 device_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
1899 {
1900         struct pci_dev *pdev = NULL;
1901
1902         switch (event) {
1903         case SYS_DOWN:
1904         case SYS_HALT:
1905         case SYS_POWER_OFF:
1906                 for_each_pci_dev(pdev) {
1907                         if (pci_dev_driver(pdev) == &device_driver) {
1908                                 if (pci_get_drvdata(pdev))
1909                                         vt6655_suspend(pdev, PMSG_HIBERNATE);
1910                         }
1911                 }
1912         }
1913         return NOTIFY_DONE;
1914 }
1915 #endif