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 #define DIVERSITY_ANT_DEF     0
 130
 131 DEVICE_PARAM(bDiversityANTEnable, "ANT diversity mode");
 132
 133 //
 134 // Static vars definitions
 135 //
 136 static CHIP_INFO chip_info_table[] = {
 137         { VT3253,       "VIA Networking Solomon-A/B/G Wireless LAN Adapter ",
 138           256, 1,     DEVICE_FLAGS_IP_ALIGN|DEVICE_FLAGS_TX_ALIGN },
 139         {0, NULL}
 140 };
 141
 142 static const struct pci_device_id vt6655_pci_id_table[] = {
 143         { PCI_VDEVICE(VIA, 0x3253), (kernel_ulong_t)chip_info_table},
 144         { 0, }
 145 };
 146
 147 /*---------------------  Static Functions  --------------------------*/
 148
 149 static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
 150 static void vt6655_init_info(struct pci_dev *pcid,
 151                              struct vnt_private **ppDevice, PCHIP_INFO);
 152 static void device_free_info(struct vnt_private *pDevice);
 153 static bool device_get_pci_info(struct vnt_private *, struct pci_dev *pcid);
 154 static void device_print_info(struct vnt_private *pDevice);
 155 static void device_init_diversity_timer(struct vnt_private *pDevice);
 156 static  irqreturn_t  device_intr(int irq,  void *dev_instance);
 157
 158 #ifdef CONFIG_PM
 159 static int device_notify_reboot(struct notifier_block *, unsigned long event, void *ptr);
 160 static struct notifier_block device_notifier = {
 161         .notifier_call = device_notify_reboot,
 162         .next = NULL,
 163         .priority = 0,
 164 };
 165 #endif
 166
 167 static void device_init_rd0_ring(struct vnt_private *pDevice);
 168 static void device_init_rd1_ring(struct vnt_private *pDevice);
 169 static void device_init_td0_ring(struct vnt_private *pDevice);
 170 static void device_init_td1_ring(struct vnt_private *pDevice);
 171
 172 static int  device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx);
 173 static int  device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx);
 174 static bool device_alloc_rx_buf(struct vnt_private *pDevice, PSRxDesc pDesc);
 175 static void device_init_registers(struct vnt_private *pDevice);
 176 static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc);
 177 static void device_free_td0_ring(struct vnt_private *pDevice);
 178 static void device_free_td1_ring(struct vnt_private *pDevice);
 179 static void device_free_rd0_ring(struct vnt_private *pDevice);
 180 static void device_free_rd1_ring(struct vnt_private *pDevice);
 181 static void device_free_rings(struct vnt_private *pDevice);
 182
 183 /*---------------------  Export Variables  --------------------------*/
 184
 185 /*---------------------  Export Functions  --------------------------*/
 186
 187 static char *get_chip_name(int chip_id)
 188 {
 189         int i;
 190
 191         for (i = 0; chip_info_table[i].name != NULL; i++)
 192                 if (chip_info_table[i].chip_id == chip_id)
 193                         break;
 194         return chip_info_table[i].name;
 195 }
 196
 197 static void vt6655_remove(struct pci_dev *pcid)
 198 {
 199         struct vnt_private *pDevice = pci_get_drvdata(pcid);
 200
 201         if (pDevice == NULL)
 202                 return;
 203         device_free_info(pDevice);
 204 }
 205
 206 static void device_get_options(struct vnt_private *pDevice)
 207 {
 208         POPTIONS pOpts = &(pDevice->sOpts);
 209
 210         pOpts->nRxDescs0 = RX_DESC_DEF0;
 211         pOpts->nRxDescs1 = RX_DESC_DEF1;
 212         pOpts->nTxDescs[0] = TX_DESC_DEF0;
 213         pOpts->nTxDescs[1] = TX_DESC_DEF1;
 214         pOpts->int_works = INT_WORKS_DEF;
 215
 216         pOpts->short_retry = SHORT_RETRY_DEF;
 217         pOpts->long_retry = LONG_RETRY_DEF;
 218         pOpts->bbp_type = BBP_TYPE_DEF;
 219         pOpts->flags |= DEVICE_FLAGS_DiversityANT;
 220 }
 221
 222 static void
 223 device_set_options(struct vnt_private *pDevice)
 224 {
 225         pDevice->byShortRetryLimit = pDevice->sOpts.short_retry;
 226         pDevice->byLongRetryLimit = pDevice->sOpts.long_retry;
 227         pDevice->bDiversityRegCtlON = (pDevice->sOpts.flags & DEVICE_FLAGS_DiversityANT) ? 1 : 0;
 228         pDevice->byBBType = pDevice->sOpts.bbp_type;
 229         pDevice->byPacketType = pDevice->byBBType;
 230         pDevice->byAutoFBCtrl = AUTO_FB_0;
 231         pDevice->bUpdateBBVGA = true;
 232         pDevice->byPreambleType = 0;
 233
 234         pr_debug(" byShortRetryLimit= %d\n", (int)pDevice->byShortRetryLimit);
 235         pr_debug(" byLongRetryLimit= %d\n", (int)pDevice->byLongRetryLimit);
 236         pr_debug(" byPreambleType= %d\n", (int)pDevice->byPreambleType);
 237         pr_debug(" byShortPreamble= %d\n", (int)pDevice->byShortPreamble);
 238         pr_debug(" byBBType= %d\n", (int)pDevice->byBBType);
 239         pr_debug(" pDevice->bDiversityRegCtlON= %d\n",
 240                  (int)pDevice->bDiversityRegCtlON);
 241 }
 242
 243 //
 244 // Initialisation of MAC & BBP registers
 245 //
 246
 247 static void device_init_registers(struct vnt_private *pDevice)
 248 {
 249         unsigned long flags;
 250         unsigned int ii;
 251         unsigned char byValue;
 252         unsigned char byValue1;
 253         unsigned char byCCKPwrdBm = 0;
 254         unsigned char byOFDMPwrdBm = 0;
 255
 256         MACbShutdown(pDevice->PortOffset);
 257         BBvSoftwareReset(pDevice);
 258
 259         /* Do MACbSoftwareReset in MACvInitialize */
 260         MACbSoftwareReset(pDevice->PortOffset);
 261
 262         pDevice->bAES = false;
 263
 264         /* Only used in 11g type, sync with ERP IE */
 265         pDevice->bProtectMode = false;
 266
 267         pDevice->bNonERPPresent = false;
 268         pDevice->bBarkerPreambleMd = false;
 269         pDevice->wCurrentRate = RATE_1M;
 270         pDevice->byTopOFDMBasicRate = RATE_24M;
 271         pDevice->byTopCCKBasicRate = RATE_1M;
 272
 273         /* Target to IF pin while programming to RF chip. */
 274         pDevice->byRevId = 0;
 275
 276         /* init MAC */
 277         MACvInitialize(pDevice->PortOffset);
 278
 279         /* Get Local ID */
 280         VNSvInPortB(pDevice->PortOffset + MAC_REG_LOCALID, &pDevice->byLocalID);
 281
 282         spin_lock_irqsave(&pDevice->lock, flags);
 283
 284         SROMvReadAllContents(pDevice->PortOffset, pDevice->abyEEPROM);
 285
 286         spin_unlock_irqrestore(&pDevice->lock, flags);
 287
 288         /* Get Channel range */
 289         pDevice->byMinChannel = 1;
 290         pDevice->byMaxChannel = CB_MAX_CHANNEL;
 291
 292         /* Get Antena */
 293         byValue = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_ANTENNA);
 294         if (byValue & EEP_ANTINV)
 295                 pDevice->bTxRxAntInv = true;
 296         else
 297                 pDevice->bTxRxAntInv = false;
 298
 299         byValue &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 300         /* if not set default is All */
 301         if (byValue == 0)
 302                 byValue = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 303
 304         pDevice->ulDiversityNValue = 100*260;
 305         pDevice->ulDiversityMValue = 100*16;
 306         pDevice->byTMax = 1;
 307         pDevice->byTMax2 = 4;
 308         pDevice->ulSQ3TH = 0;
 309         pDevice->byTMax3 = 64;
 310
 311         if (byValue == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 312                 pDevice->byAntennaCount = 2;
 313                 pDevice->byTxAntennaMode = ANT_B;
 314                 pDevice->dwTxAntennaSel = 1;
 315                 pDevice->dwRxAntennaSel = 1;
 316
 317                 if (pDevice->bTxRxAntInv)
 318                         pDevice->byRxAntennaMode = ANT_A;
 319                 else
 320                         pDevice->byRxAntennaMode = ANT_B;
 321
 322                 byValue1 = SROMbyReadEmbedded(pDevice->PortOffset,
 323                                               EEP_OFS_ANTENNA);
 324
 325                 if ((byValue1 & 0x08) == 0)
 326                         pDevice->bDiversityEnable = false;
 327                 else
 328                         pDevice->bDiversityEnable = true;
 329         } else  {
 330                 pDevice->bDiversityEnable = false;
 331                 pDevice->byAntennaCount = 1;
 332                 pDevice->dwTxAntennaSel = 0;
 333                 pDevice->dwRxAntennaSel = 0;
 334
 335                 if (byValue & EEP_ANTENNA_AUX) {
 336                         pDevice->byTxAntennaMode = ANT_A;
 337
 338                         if (pDevice->bTxRxAntInv)
 339                                 pDevice->byRxAntennaMode = ANT_B;
 340                         else
 341                                 pDevice->byRxAntennaMode = ANT_A;
 342                 } else {
 343                         pDevice->byTxAntennaMode = ANT_B;
 344
 345                         if (pDevice->bTxRxAntInv)
 346                                 pDevice->byRxAntennaMode = ANT_A;
 347                         else
 348                                 pDevice->byRxAntennaMode = ANT_B;
 349                 }
 350         }
 351
 352         pr_debug("bDiversityEnable=[%d],NValue=[%d],MValue=[%d],TMax=[%d],TMax2=[%d]\n",
 353                  pDevice->bDiversityEnable, (int)pDevice->ulDiversityNValue,
 354                  (int)pDevice->ulDiversityMValue, pDevice->byTMax,
 355                  pDevice->byTMax2);
 356
 357         /* zonetype initial */
 358         pDevice->byOriginalZonetype = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 359
 360         /* Get RFType */
 361         pDevice->byRFType = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_RFTYPE);
 362
 363         /* force change RevID for VT3253 emu */
 364         if ((pDevice->byRFType & RF_EMU) != 0)
 365                         pDevice->byRevId = 0x80;
 366
 367         pDevice->byRFType &= RF_MASK;
 368         pr_debug("pDevice->byRFType = %x\n", pDevice->byRFType);
 369
 370         if (!pDevice->bZoneRegExist)
 371                 pDevice->byZoneType = pDevice->abyEEPROM[EEP_OFS_ZONETYPE];
 372
 373         pr_debug("pDevice->byZoneType = %x\n", pDevice->byZoneType);
 374
 375         /* Init RF module */
 376         RFbInit(pDevice);
 377
 378         /* Get Desire Power Value */
 379         pDevice->byCurPwr = 0xFF;
 380         pDevice->byCCKPwr = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_CCK);
 381         pDevice->byOFDMPwrG = SROMbyReadEmbedded(pDevice->PortOffset, EEP_OFS_PWR_OFDMG);
 382
 383         /* Load power Table */
 384         for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
 385                 pDevice->abyCCKPwrTbl[ii + 1] =
 386                         SROMbyReadEmbedded(pDevice->PortOffset,
 387                                            (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
 388                 if (pDevice->abyCCKPwrTbl[ii + 1] == 0)
 389                         pDevice->abyCCKPwrTbl[ii+1] = pDevice->byCCKPwr;
 390
 391                 pDevice->abyOFDMPwrTbl[ii + 1] =
 392                         SROMbyReadEmbedded(pDevice->PortOffset,
 393                                            (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
 394                 if (pDevice->abyOFDMPwrTbl[ii + 1] == 0)
 395                         pDevice->abyOFDMPwrTbl[ii + 1] = pDevice->byOFDMPwrG;
 396
 397                 pDevice->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
 398                 pDevice->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
 399         }
 400
 401         /* recover 12,13 ,14channel for EUROPE by 11 channel */
 402         for (ii = 11; ii < 14; ii++) {
 403                 pDevice->abyCCKPwrTbl[ii] = pDevice->abyCCKPwrTbl[10];
 404                 pDevice->abyOFDMPwrTbl[ii] = pDevice->abyOFDMPwrTbl[10];
 405         }
 406
 407         /* Load OFDM A Power Table */
 408         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 409                 pDevice->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
 410                         SROMbyReadEmbedded(pDevice->PortOffset,
 411                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));
 412
 413                 pDevice->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
 414                         SROMbyReadEmbedded(pDevice->PortOffset,
 415                                            (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
 416         }
 417
 418         if (pDevice->byLocalID > REV_ID_VT3253_B1) {
 419                 MACvSelectPage1(pDevice->PortOffset);
 420
 421                 VNSvOutPortB(pDevice->PortOffset + MAC_REG_MSRCTL + 1,
 422                              (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));
 423
 424                 MACvSelectPage0(pDevice->PortOffset);
 425         }
 426
 427         /* use relative tx timeout and 802.11i D4 */
 428         MACvWordRegBitsOn(pDevice->PortOffset,
 429                           MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));
 430
 431         /* set performance parameter by registry */
 432         MACvSetShortRetryLimit(pDevice->PortOffset, pDevice->byShortRetryLimit);
 433         MACvSetLongRetryLimit(pDevice->PortOffset, pDevice->byLongRetryLimit);
 434
 435         /* reset TSF counter */
 436         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
 437         /* enable TSF counter */
 438         VNSvOutPortB(pDevice->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 439
 440         /* initialize BBP registers */
 441         BBbVT3253Init(pDevice);
 442
 443         if (pDevice->bUpdateBBVGA) {
 444                 pDevice->byBBVGACurrent = pDevice->abyBBVGA[0];
 445                 pDevice->byBBVGANew = pDevice->byBBVGACurrent;
 446                 BBvSetVGAGainOffset(pDevice, pDevice->abyBBVGA[0]);
 447         }
 448
 449         BBvSetRxAntennaMode(pDevice, pDevice->byRxAntennaMode);
 450         BBvSetTxAntennaMode(pDevice, pDevice->byTxAntennaMode);
 451
 452         /* Set BB and packet type at the same time. */
 453         /* Set Short Slot Time, xIFS, and RSPINF. */
 454         pDevice->wCurrentRate = RATE_54M;
 455
 456         pDevice->bRadioOff = false;
 457
 458         pDevice->byRadioCtl = SROMbyReadEmbedded(pDevice->PortOffset,
 459                                                  EEP_OFS_RADIOCTL);
 460         pDevice->bHWRadioOff = false;
 461
 462         if (pDevice->byRadioCtl & EEP_RADIOCTL_ENABLE) {
 463                 /* Get GPIO */
 464                 MACvGPIOIn(pDevice->PortOffset, &pDevice->byGPIO);
 465
 466                 if (((pDevice->byGPIO & GPIO0_DATA) &&
 467                      !(pDevice->byRadioCtl & EEP_RADIOCTL_INV)) ||
 468                      (!(pDevice->byGPIO & GPIO0_DATA) &&
 469                      (pDevice->byRadioCtl & EEP_RADIOCTL_INV)))
 470                         pDevice->bHWRadioOff = true;
 471         }
 472
 473         if (pDevice->bHWRadioOff || pDevice->bRadioControlOff)
 474                 CARDbRadioPowerOff(pDevice);
 475
 476         /* get Permanent network address */
 477         SROMvReadEtherAddress(pDevice->PortOffset, pDevice->abyCurrentNetAddr);
 478         pr_debug("Network address = %pM\n", pDevice->abyCurrentNetAddr);
 479
 480         /* reset Tx pointer */
 481         CARDvSafeResetRx(pDevice);
 482         /* reset Rx pointer */
 483         CARDvSafeResetTx(pDevice);
 484
 485         if (pDevice->byLocalID <= REV_ID_VT3253_A1)
 486                 MACvRegBitsOn(pDevice->PortOffset, MAC_REG_RCR, RCR_WPAERR);
 487
 488         /* Turn On Rx DMA */
 489         MACvReceive0(pDevice->PortOffset);
 490         MACvReceive1(pDevice->PortOffset);
 491
 492         /* start the adapter */
 493         MACvStart(pDevice->PortOffset);
 494 }
 495
 496 static void device_init_diversity_timer(struct vnt_private *pDevice)
 497 {
 498         init_timer(&pDevice->TimerSQ3Tmax1);
 499         pDevice->TimerSQ3Tmax1.data = (unsigned long) pDevice;
 500         pDevice->TimerSQ3Tmax1.function = TimerSQ3CallBack;
 501         pDevice->TimerSQ3Tmax1.expires = RUN_AT(HZ);
 502
 503         init_timer(&pDevice->TimerSQ3Tmax2);
 504         pDevice->TimerSQ3Tmax2.data = (unsigned long) pDevice;
 505         pDevice->TimerSQ3Tmax2.function = TimerSQ3CallBack;
 506         pDevice->TimerSQ3Tmax2.expires = RUN_AT(HZ);
 507
 508         init_timer(&pDevice->TimerSQ3Tmax3);
 509         pDevice->TimerSQ3Tmax3.data = (unsigned long) pDevice;
 510         pDevice->TimerSQ3Tmax3.function = TimerState1CallBack;
 511         pDevice->TimerSQ3Tmax3.expires = RUN_AT(HZ);
 512 }
 513
 514 static void device_print_info(struct vnt_private *pDevice)
 515 {
 516         dev_info(&pDevice->pcid->dev, "%s\n", get_chip_name(pDevice->chip_id));
 517
 518         dev_info(&pDevice->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
 519                  pDevice->abyCurrentNetAddr, (unsigned long)pDevice->ioaddr,
 520                  (unsigned long)pDevice->PortOffset, pDevice->pcid->irq);
 521 }
 522
 523 static void vt6655_init_info(struct pci_dev *pcid,
 524                              struct vnt_private **ppDevice,
 525                              PCHIP_INFO pChip_info)
 526 {
 527         memset(*ppDevice, 0, sizeof(**ppDevice));
 528
 529         (*ppDevice)->pcid = pcid;
 530         (*ppDevice)->chip_id = pChip_info->chip_id;
 531         (*ppDevice)->io_size = pChip_info->io_size;
 532         (*ppDevice)->nTxQueues = pChip_info->nTxQueue;
 533         (*ppDevice)->multicast_limit = 32;
 534
 535         spin_lock_init(&((*ppDevice)->lock));
 536 }
 537
 538 static bool device_get_pci_info(struct vnt_private *pDevice,
 539                                 struct pci_dev *pcid)
 540 {
 541         u16 pci_cmd;
 542         u8  b;
 543         unsigned int cis_addr;
 544
 545         pci_read_config_byte(pcid, PCI_REVISION_ID, &pDevice->byRevId);
 546         pci_read_config_word(pcid, PCI_SUBSYSTEM_ID, &pDevice->SubSystemID);
 547         pci_read_config_word(pcid, PCI_SUBSYSTEM_VENDOR_ID, &pDevice->SubVendorID);
 548         pci_read_config_word(pcid, PCI_COMMAND, (u16 *)&(pci_cmd));
 549
 550         pci_set_master(pcid);
 551
 552         pDevice->memaddr = pci_resource_start(pcid, 0);
 553         pDevice->ioaddr = pci_resource_start(pcid, 1);
 554
 555         cis_addr = pci_resource_start(pcid, 2);
 556
 557         pDevice->pcid = pcid;
 558
 559         pci_read_config_byte(pcid, PCI_COMMAND, &b);
 560         pci_write_config_byte(pcid, PCI_COMMAND, (b|PCI_COMMAND_MASTER));
 561
 562         return true;
 563 }
 564
 565 static void device_free_info(struct vnt_private *pDevice)
 566 {
 567         if (!pDevice)
 568                 return;
 569
 570         if (pDevice->mac_hw)
 571                 ieee80211_unregister_hw(pDevice->hw);
 572
 573         if (pDevice->PortOffset)
 574                 iounmap(pDevice->PortOffset);
 575
 576         if (pDevice->pcid)
 577                 pci_release_regions(pDevice->pcid);
 578
 579         if (pDevice->hw)
 580                 ieee80211_free_hw(pDevice->hw);
 581 }
 582
 583 static bool device_init_rings(struct vnt_private *pDevice)
 584 {
 585         void *vir_pool;
 586
 587         /*allocate all RD/TD rings a single pool*/
 588         vir_pool = pci_zalloc_consistent(pDevice->pcid,
 589                                          pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 590                                          pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 591                                          pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 592                                          pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc),
 593                                          &pDevice->pool_dma);
 594         if (vir_pool == NULL) {
 595                 dev_err(&pDevice->pcid->dev, "allocate desc dma memory failed\n");
 596                 return false;
 597         }
 598
 599         pDevice->aRD0Ring = vir_pool;
 600         pDevice->aRD1Ring = vir_pool +
 601                 pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc);
 602
 603         pDevice->rd0_pool_dma = pDevice->pool_dma;
 604         pDevice->rd1_pool_dma = pDevice->rd0_pool_dma +
 605                 pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc);
 606
 607         pDevice->tx0_bufs = pci_zalloc_consistent(pDevice->pcid,
 608                                                   pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 609                                                   pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 610                                                   CB_BEACON_BUF_SIZE +
 611                                                   CB_MAX_BUF_SIZE,
 612                                                   &pDevice->tx_bufs_dma0);
 613         if (pDevice->tx0_bufs == NULL) {
 614                 dev_err(&pDevice->pcid->dev, "allocate buf dma memory failed\n");
 615
 616                 pci_free_consistent(pDevice->pcid,
 617                                     pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 618                                     pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 619                                     pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 620                                     pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc),
 621                                     vir_pool, pDevice->pool_dma
 622                         );
 623                 return false;
 624         }
 625
 626         pDevice->td0_pool_dma = pDevice->rd1_pool_dma +
 627                 pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc);
 628
 629         pDevice->td1_pool_dma = pDevice->td0_pool_dma +
 630                 pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc);
 631
 632         // vir_pool: pvoid type
 633         pDevice->apTD0Rings = vir_pool
 634                 + pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc)
 635                 + pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc);
 636
 637         pDevice->apTD1Rings = vir_pool
 638                 + pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc)
 639                 + pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc)
 640                 + pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc);
 641
 642         pDevice->tx1_bufs = pDevice->tx0_bufs +
 643                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 644
 645         pDevice->tx_beacon_bufs = pDevice->tx1_bufs +
 646                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 647
 648         pDevice->pbyTmpBuff = pDevice->tx_beacon_bufs +
 649                 CB_BEACON_BUF_SIZE;
 650
 651         pDevice->tx_bufs_dma1 = pDevice->tx_bufs_dma0 +
 652                 pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ;
 653
 654         pDevice->tx_beacon_dma = pDevice->tx_bufs_dma1 +
 655                 pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ;
 656
 657         return true;
 658 }
 659
 660 static void device_free_rings(struct vnt_private *pDevice)
 661 {
 662         pci_free_consistent(pDevice->pcid,
 663                             pDevice->sOpts.nRxDescs0 * sizeof(SRxDesc) +
 664                             pDevice->sOpts.nRxDescs1 * sizeof(SRxDesc) +
 665                             pDevice->sOpts.nTxDescs[0] * sizeof(STxDesc) +
 666                             pDevice->sOpts.nTxDescs[1] * sizeof(STxDesc)
 667                             ,
 668                             pDevice->aRD0Ring, pDevice->pool_dma
 669                 );
 670
 671         if (pDevice->tx0_bufs)
 672                 pci_free_consistent(pDevice->pcid,
 673                                     pDevice->sOpts.nTxDescs[0] * PKT_BUF_SZ +
 674                                     pDevice->sOpts.nTxDescs[1] * PKT_BUF_SZ +
 675                                     CB_BEACON_BUF_SIZE +
 676                                     CB_MAX_BUF_SIZE,
 677                                     pDevice->tx0_bufs, pDevice->tx_bufs_dma0
 678                         );
 679 }
 680
 681 static void device_init_rd0_ring(struct vnt_private *pDevice)
 682 {
 683         int i;
 684         dma_addr_t      curr = pDevice->rd0_pool_dma;
 685         PSRxDesc        pDesc;
 686
 687         /* Init the RD0 ring entries */
 688         for (i = 0; i < pDevice->sOpts.nRxDescs0; i ++, curr += sizeof(SRxDesc)) {
 689                 pDesc = &(pDevice->aRD0Ring[i]);
 690                 pDesc->pRDInfo = alloc_rd_info();
 691                 ASSERT(pDesc->pRDInfo);
 692                 if (!device_alloc_rx_buf(pDevice, pDesc))
 693                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 694
 695                 pDesc->next = &(pDevice->aRD0Ring[(i+1) % pDevice->sOpts.nRxDescs0]);
 696                 pDesc->pRDInfo->curr_desc = cpu_to_le32(curr);
 697                 pDesc->next_desc = cpu_to_le32(curr + sizeof(SRxDesc));
 698         }
 699
 700         if (i > 0)
 701                 pDevice->aRD0Ring[i-1].next_desc = cpu_to_le32(pDevice->rd0_pool_dma);
 702         pDevice->pCurrRD[0] = &(pDevice->aRD0Ring[0]);
 703 }
 704
 705 static void device_init_rd1_ring(struct vnt_private *pDevice)
 706 {
 707         int i;
 708         dma_addr_t      curr = pDevice->rd1_pool_dma;
 709         PSRxDesc        pDesc;
 710
 711         /* Init the RD1 ring entries */
 712         for (i = 0; i < pDevice->sOpts.nRxDescs1; i ++, curr += sizeof(SRxDesc)) {
 713                 pDesc = &(pDevice->aRD1Ring[i]);
 714                 pDesc->pRDInfo = alloc_rd_info();
 715                 ASSERT(pDesc->pRDInfo);
 716                 if (!device_alloc_rx_buf(pDevice, pDesc))
 717                         dev_err(&pDevice->pcid->dev, "can not alloc rx bufs\n");
 718
 719                 pDesc->next = &(pDevice->aRD1Ring[(i+1) % pDevice->sOpts.nRxDescs1]);
 720                 pDesc->pRDInfo->curr_desc = cpu_to_le32(curr);
 721                 pDesc->next_desc = cpu_to_le32(curr + sizeof(SRxDesc));
 722         }
 723
 724         if (i > 0)
 725                 pDevice->aRD1Ring[i-1].next_desc = cpu_to_le32(pDevice->rd1_pool_dma);
 726         pDevice->pCurrRD[1] = &(pDevice->aRD1Ring[0]);
 727 }
 728
 729 static void device_free_rd0_ring(struct vnt_private *pDevice)
 730 {
 731         int i;
 732
 733         for (i = 0; i < pDevice->sOpts.nRxDescs0; i++) {
 734                 PSRxDesc        pDesc = &(pDevice->aRD0Ring[i]);
 735                 PDEVICE_RD_INFO  pRDInfo = pDesc->pRDInfo;
 736
 737                 pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 738                                  pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 739
 740                 dev_kfree_skb(pRDInfo->skb);
 741
 742                 kfree(pDesc->pRDInfo);
 743         }
 744 }
 745
 746 static void device_free_rd1_ring(struct vnt_private *pDevice)
 747 {
 748         int i;
 749
 750         for (i = 0; i < pDevice->sOpts.nRxDescs1; i++) {
 751                 PSRxDesc        pDesc = &(pDevice->aRD1Ring[i]);
 752                 PDEVICE_RD_INFO  pRDInfo = pDesc->pRDInfo;
 753
 754                 pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
 755                                  pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 756
 757                 dev_kfree_skb(pRDInfo->skb);
 758
 759                 kfree(pDesc->pRDInfo);
 760         }
 761 }
 762
 763 static void device_init_td0_ring(struct vnt_private *pDevice)
 764 {
 765         int i;
 766         dma_addr_t  curr;
 767         PSTxDesc        pDesc;
 768
 769         curr = pDevice->td0_pool_dma;
 770         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++, curr += sizeof(STxDesc)) {
 771                 pDesc = &(pDevice->apTD0Rings[i]);
 772                 pDesc->pTDInfo = alloc_td_info();
 773                 ASSERT(pDesc->pTDInfo);
 774                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 775                         pDesc->pTDInfo->buf = pDevice->tx0_bufs + (i)*PKT_BUF_SZ;
 776                         pDesc->pTDInfo->buf_dma = pDevice->tx_bufs_dma0 + (i)*PKT_BUF_SZ;
 777                 }
 778                 pDesc->next = &(pDevice->apTD0Rings[(i+1) % pDevice->sOpts.nTxDescs[0]]);
 779                 pDesc->pTDInfo->curr_desc = cpu_to_le32(curr);
 780                 pDesc->next_desc = cpu_to_le32(curr+sizeof(STxDesc));
 781         }
 782
 783         if (i > 0)
 784                 pDevice->apTD0Rings[i-1].next_desc = cpu_to_le32(pDevice->td0_pool_dma);
 785         pDevice->apTailTD[0] = pDevice->apCurrTD[0] = &(pDevice->apTD0Rings[0]);
 786 }
 787
 788 static void device_init_td1_ring(struct vnt_private *pDevice)
 789 {
 790         int i;
 791         dma_addr_t  curr;
 792         PSTxDesc    pDesc;
 793
 794         /* Init the TD ring entries */
 795         curr = pDevice->td1_pool_dma;
 796         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++, curr += sizeof(STxDesc)) {
 797                 pDesc = &(pDevice->apTD1Rings[i]);
 798                 pDesc->pTDInfo = alloc_td_info();
 799                 ASSERT(pDesc->pTDInfo);
 800                 if (pDevice->flags & DEVICE_FLAGS_TX_ALIGN) {
 801                         pDesc->pTDInfo->buf = pDevice->tx1_bufs + (i) * PKT_BUF_SZ;
 802                         pDesc->pTDInfo->buf_dma = pDevice->tx_bufs_dma1 + (i) * PKT_BUF_SZ;
 803                 }
 804                 pDesc->next = &(pDevice->apTD1Rings[(i + 1) % pDevice->sOpts.nTxDescs[1]]);
 805                 pDesc->pTDInfo->curr_desc = cpu_to_le32(curr);
 806                 pDesc->next_desc = cpu_to_le32(curr+sizeof(STxDesc));
 807         }
 808
 809         if (i > 0)
 810                 pDevice->apTD1Rings[i-1].next_desc = cpu_to_le32(pDevice->td1_pool_dma);
 811         pDevice->apTailTD[1] = pDevice->apCurrTD[1] = &(pDevice->apTD1Rings[0]);
 812 }
 813
 814 static void device_free_td0_ring(struct vnt_private *pDevice)
 815 {
 816         int i;
 817
 818         for (i = 0; i < pDevice->sOpts.nTxDescs[0]; i++) {
 819                 PSTxDesc        pDesc = &(pDevice->apTD0Rings[i]);
 820                 PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 821
 822                 if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
 823                         pci_unmap_single(pDevice->pcid, pTDInfo->skb_dma,
 824                                          pTDInfo->skb->len, PCI_DMA_TODEVICE);
 825
 826                 if (pTDInfo->skb)
 827                         dev_kfree_skb(pTDInfo->skb);
 828
 829                 kfree(pDesc->pTDInfo);
 830         }
 831 }
 832
 833 static void device_free_td1_ring(struct vnt_private *pDevice)
 834 {
 835         int i;
 836
 837         for (i = 0; i < pDevice->sOpts.nTxDescs[1]; i++) {
 838                 PSTxDesc        pDesc = &(pDevice->apTD1Rings[i]);
 839                 PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
 840
 841                 if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
 842                         pci_unmap_single(pDevice->pcid, pTDInfo->skb_dma,
 843                                          pTDInfo->skb->len, PCI_DMA_TODEVICE);
 844
 845                 if (pTDInfo->skb)
 846                         dev_kfree_skb(pTDInfo->skb);
 847
 848                 kfree(pDesc->pTDInfo);
 849         }
 850 }
 851
 852 /*-----------------------------------------------------------------*/
 853
 854 static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 855 {
 856         PSRxDesc    pRD;
 857         int works = 0;
 858
 859         for (pRD = pDevice->pCurrRD[uIdx];
 860              pRD->m_rd0RD0.f1Owner == OWNED_BY_HOST;
 861              pRD = pRD->next) {
 862                 if (works++ > 15)
 863                         break;
 864                 if (vnt_receive_frame(pDevice, pRD)) {
 865                         if (!device_alloc_rx_buf(pDevice, pRD)) {
 866                                 dev_err(&pDevice->pcid->dev,
 867                                         "can not allocate rx buf\n");
 868                                 break;
 869                         }
 870                 }
 871                 pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 872         }
 873
 874         pDevice->pCurrRD[uIdx] = pRD;
 875
 876         return works;
 877 }
 878
 879 static bool device_alloc_rx_buf(struct vnt_private *pDevice, PSRxDesc pRD)
 880 {
 881         PDEVICE_RD_INFO pRDInfo = pRD->pRDInfo;
 882
 883         pRDInfo->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
 884         if (pRDInfo->skb == NULL)
 885                 return false;
 886         ASSERT(pRDInfo->skb);
 887
 888         pRDInfo->skb_dma =
 889                 pci_map_single(pDevice->pcid,
 890                                skb_put(pRDInfo->skb, skb_tailroom(pRDInfo->skb)),
 891                                pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
 892
 893         *((unsigned int *)&(pRD->m_rd0RD0)) = 0; /* FIX cast */
 894
 895         pRD->m_rd0RD0.wResCount = cpu_to_le16(pDevice->rx_buf_sz);
 896         pRD->m_rd0RD0.f1Owner = OWNED_BY_NIC;
 897         pRD->m_rd1RD1.wReqCount = cpu_to_le16(pDevice->rx_buf_sz);
 898         pRD->buff_addr = cpu_to_le32(pRDInfo->skb_dma);
 899
 900         return true;
 901 }
 902
 903 static const u8 fallback_rate0[5][5] = {
 904         {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
 905         {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
 906         {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
 907         {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
 908         {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
 909 };
 910
 911 static const u8 fallback_rate1[5][5] = {
 912         {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
 913         {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
 914         {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
 915         {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
 916         {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
 917 };
 918
 919 static int vnt_int_report_rate(struct vnt_private *priv,
 920                                PDEVICE_TD_INFO context, u8 tsr0, u8 tsr1)
 921 {
 922         struct vnt_tx_fifo_head *fifo_head;
 923         struct ieee80211_tx_info *info;
 924         struct ieee80211_rate *rate;
 925         u16 fb_option;
 926         u8 tx_retry = (tsr0 & TSR0_NCR);
 927         s8 idx;
 928
 929         if (!context)
 930                 return -ENOMEM;
 931
 932         if (!context->skb)
 933                 return -EINVAL;
 934
 935         fifo_head = (struct vnt_tx_fifo_head *)context->buf;
 936         fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
 937                         (FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));
 938
 939         info = IEEE80211_SKB_CB(context->skb);
 940         idx = info->control.rates[0].idx;
 941
 942         if (fb_option && !(tsr1 & TSR1_TERR)) {
 943                 u8 tx_rate;
 944                 u8 retry = tx_retry;
 945
 946                 rate = ieee80211_get_tx_rate(priv->hw, info);
 947                 tx_rate = rate->hw_value - RATE_18M;
 948
 949                 if (retry > 4)
 950                         retry = 4;
 951
 952                 if (fb_option & FIFOCTL_AUTO_FB_0)
 953                         tx_rate = fallback_rate0[tx_rate][retry];
 954                 else if (fb_option & FIFOCTL_AUTO_FB_1)
 955                         tx_rate = fallback_rate1[tx_rate][retry];
 956
 957                 if (info->band == IEEE80211_BAND_5GHZ)
 958                         idx = tx_rate - RATE_6M;
 959                 else
 960                         idx = tx_rate;
 961         }
 962
 963         ieee80211_tx_info_clear_status(info);
 964
 965         info->status.rates[0].count = tx_retry;
 966
 967         if (!(tsr1 & TSR1_TERR)) {
 968                 info->status.rates[0].idx = idx;
 969                 info->flags |= IEEE80211_TX_STAT_ACK;
 970         }
 971
 972         return 0;
 973 }
 974
 975 static int device_tx_srv(struct vnt_private *pDevice, unsigned int uIdx)
 976 {
 977         PSTxDesc                 pTD;
 978         int                      works = 0;
 979         unsigned char byTsr0;
 980         unsigned char byTsr1;
 981
 982         for (pTD = pDevice->apTailTD[uIdx]; pDevice->iTDUsed[uIdx] > 0; pTD = pTD->next) {
 983                 if (pTD->m_td0TD0.f1Owner == OWNED_BY_NIC)
 984                         break;
 985                 if (works++ > 15)
 986                         break;
 987
 988                 byTsr0 = pTD->m_td0TD0.byTSR0;
 989                 byTsr1 = pTD->m_td0TD0.byTSR1;
 990
 991                 //Only the status of first TD in the chain is correct
 992                 if (pTD->m_td1TD1.byTCR & TCR_STP) {
 993                         if ((pTD->pTDInfo->byFlags & TD_FLAGS_NETIF_SKB) != 0) {
 994
 995                                 vnt_int_report_rate(pDevice, pTD->pTDInfo, byTsr0, byTsr1);
 996
 997                                 if (!(byTsr1 & TSR1_TERR)) {
 998                                         if (byTsr0 != 0) {
 999                                                 pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
1000                                                          (int)uIdx, byTsr1,
1001                                                          byTsr0);
1002                                         }
1003                                 } else {
1004                                         pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
1005                                                  (int)uIdx, byTsr1, byTsr0);
1006                                 }
1007                         }
1008
1009                         if (byTsr1 & TSR1_TERR) {
1010                                 if ((pTD->pTDInfo->byFlags & TD_FLAGS_PRIV_SKB) != 0) {
1011                                         pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
1012                                                  (int)uIdx, byTsr1, byTsr0);
1013                                 }
1014                         }
1015                         device_free_tx_buf(pDevice, pTD);
1016                         pDevice->iTDUsed[uIdx]--;
1017                 }
1018         }
1019
1020         pDevice->apTailTD[uIdx] = pTD;
1021
1022         return works;
1023 }
1024
1025 static void device_error(struct vnt_private *pDevice, unsigned short status)
1026 {
1027         if (status & ISR_FETALERR) {
1028                 dev_err(&pDevice->pcid->dev, "Hardware fatal error\n");
1029
1030                 MACbShutdown(pDevice->PortOffset);
1031                 return;
1032         }
1033 }
1034
1035 static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc)
1036 {
1037         PDEVICE_TD_INFO  pTDInfo = pDesc->pTDInfo;
1038         struct sk_buff *skb = pTDInfo->skb;
1039
1040         // pre-allocated buf_dma can't be unmapped.
1041         if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma)) {
1042                 pci_unmap_single(pDevice->pcid, pTDInfo->skb_dma, skb->len,
1043                                  PCI_DMA_TODEVICE);
1044         }
1045
1046         if (pTDInfo->byFlags & TD_FLAGS_NETIF_SKB)
1047                 ieee80211_tx_status_irqsafe(pDevice->hw, skb);
1048         else
1049                 dev_kfree_skb_irq(skb);
1050
1051         pTDInfo->skb_dma = 0;
1052         pTDInfo->skb = NULL;
1053         pTDInfo->byFlags = 0;
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         int             ii = 0;
1064         unsigned long flags;
1065
1066         MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1067
1068         if (pDevice->dwIsr == 0)
1069                 return IRQ_RETVAL(handled);
1070
1071         if (pDevice->dwIsr == 0xffffffff) {
1072                 pr_debug("dwIsr = 0xffff\n");
1073                 return IRQ_RETVAL(handled);
1074         }
1075
1076         handled = 1;
1077         MACvIntDisable(pDevice->PortOffset);
1078
1079         spin_lock_irqsave(&pDevice->lock, flags);
1080
1081         //Make sure current page is 0
1082         VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
1083         if (byOrgPageSel == 1)
1084                 MACvSelectPage0(pDevice->PortOffset);
1085         else
1086                 byOrgPageSel = 0;
1087
1088         MACvReadMIBCounter(pDevice->PortOffset, &dwMIBCounter);
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         STAvUpdate802_11Counter(&pDevice->s802_11Counter, &pDevice->scStatistic , dwMIBCounter);
1094         while (pDevice->dwIsr != 0) {
1095                 STAvUpdateIsrStatCounter(&pDevice->scStatistic, pDevice->dwIsr);
1096                 MACvWriteISR(pDevice->PortOffset, pDevice->dwIsr);
1097
1098                 if (pDevice->dwIsr & ISR_FETALERR) {
1099                         pr_debug(" ISR_FETALERR\n");
1100                         VNSvOutPortB(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, 0);
1101                         VNSvOutPortW(pDevice->PortOffset + MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
1102                         device_error(pDevice, pDevice->dwIsr);
1103                 }
1104
1105                 if (pDevice->dwIsr & ISR_TBTT) {
1106                         if (pDevice->vif &&
1107                             pDevice->op_mode != NL80211_IFTYPE_ADHOC) {
1108                                 if (pDevice->bUpdateBBVGA &&
1109                                     !(pDevice->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1110                                     pDevice->vif->bss_conf.assoc &&
1111                                     pDevice->uCurrRSSI) {
1112                                         long            ldBm;
1113
1114                                         RFvRSSITodBm(pDevice, (unsigned char) pDevice->uCurrRSSI, &ldBm);
1115                                         for (ii = 0; ii < BB_VGA_LEVEL; ii++) {
1116                                                 if (ldBm < pDevice->ldBmThreshold[ii]) {
1117                                                         pDevice->byBBVGANew = pDevice->abyBBVGA[ii];
1118                                                         break;
1119                                                 }
1120                                         }
1121                                         if (pDevice->byBBVGANew != pDevice->byBBVGACurrent) {
1122                                                 pDevice->uBBVGADiffCount++;
1123                                                 if (pDevice->uBBVGADiffCount == 1) {
1124                                                         // first VGA diff gain
1125                                                         BBvSetVGAGainOffset(pDevice, pDevice->byBBVGANew);
1126                                                         pr_debug("First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1127                                                                  (int)ldBm,
1128                                                                  pDevice->byBBVGANew,
1129                                                                  pDevice->byBBVGACurrent,
1130                                                                  (int)pDevice->uBBVGADiffCount);
1131                                                 }
1132                                                 if (pDevice->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
1133                                                         pr_debug("RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
1134                                                                  (int)ldBm,
1135                                                                  pDevice->byBBVGANew,
1136                                                                  pDevice->byBBVGACurrent,
1137                                                                  (int)pDevice->uBBVGADiffCount);
1138                                                         BBvSetVGAGainOffset(pDevice, pDevice->byBBVGANew);
1139                                                 }
1140                                         } else {
1141                                                 pDevice->uBBVGADiffCount = 1;
1142                                         }
1143                                 }
1144                         }
1145
1146                         pDevice->bBeaconSent = false;
1147                         if (pDevice->bEnablePSMode)
1148                                 PSbIsNextTBTTWakeUp((void *)pDevice);
1149
1150                         if ((pDevice->op_mode == NL80211_IFTYPE_AP ||
1151                             pDevice->op_mode == NL80211_IFTYPE_ADHOC) &&
1152                             pDevice->vif->bss_conf.enable_beacon) {
1153                                 MACvOneShotTimer1MicroSec(pDevice->PortOffset,
1154                                                           (pDevice->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
1155                         }
1156
1157                         /* TODO: adhoc PS mode */
1158
1159                 }
1160
1161                 if (pDevice->dwIsr & ISR_BNTX) {
1162                         if (pDevice->op_mode == NL80211_IFTYPE_ADHOC) {
1163                                 pDevice->bIsBeaconBufReadySet = false;
1164                                 pDevice->cbBeaconBufReadySetCnt = 0;
1165                         }
1166
1167                         pDevice->bBeaconSent = true;
1168                 }
1169
1170                 if (pDevice->dwIsr & ISR_RXDMA0)
1171                         max_count += device_rx_srv(pDevice, TYPE_RXDMA0);
1172
1173                 if (pDevice->dwIsr & ISR_RXDMA1)
1174                         max_count += device_rx_srv(pDevice, TYPE_RXDMA1);
1175
1176                 if (pDevice->dwIsr & ISR_TXDMA0)
1177                         max_count += device_tx_srv(pDevice, TYPE_TXDMA0);
1178
1179                 if (pDevice->dwIsr & ISR_AC0DMA)
1180                         max_count += device_tx_srv(pDevice, TYPE_AC0DMA);
1181
1182                 if (pDevice->dwIsr & ISR_SOFTTIMER1) {
1183                         if (pDevice->vif) {
1184                                 if (pDevice->vif->bss_conf.enable_beacon)
1185                                         vnt_beacon_make(pDevice, pDevice->vif);
1186                         }
1187                 }
1188
1189                 /* If both buffers available wake the queue */
1190                 if (pDevice->vif) {
1191                         if (AVAIL_TD(pDevice, TYPE_TXDMA0) &&
1192                             AVAIL_TD(pDevice, TYPE_AC0DMA) &&
1193                             ieee80211_queue_stopped(pDevice->hw, 0))
1194                                 ieee80211_wake_queues(pDevice->hw);
1195                 }
1196
1197                 MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
1198
1199                 MACvReceive0(pDevice->PortOffset);
1200                 MACvReceive1(pDevice->PortOffset);
1201
1202                 if (max_count > pDevice->sOpts.int_works)
1203                         break;
1204         }
1205
1206         if (byOrgPageSel == 1)
1207                 MACvSelectPage1(pDevice->PortOffset);
1208
1209         spin_unlock_irqrestore(&pDevice->lock, flags);
1210
1211         MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
1212
1213         return IRQ_RETVAL(handled);
1214 }
1215
1216 static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
1217 {
1218         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1219         PSTxDesc head_td;
1220         u32 dma_idx = TYPE_AC0DMA;
1221         unsigned long flags;
1222
1223         spin_lock_irqsave(&priv->lock, flags);
1224
1225         if (!ieee80211_is_data(hdr->frame_control))
1226                 dma_idx = TYPE_TXDMA0;
1227
1228         if (AVAIL_TD(priv, dma_idx) < 1) {
1229                 spin_unlock_irqrestore(&priv->lock, flags);
1230                 return -ENOMEM;
1231         }
1232
1233         head_td = priv->apCurrTD[dma_idx];
1234
1235         head_td->m_td1TD1.byTCR = (TCR_EDP|TCR_STP);
1236
1237         head_td->pTDInfo->skb = skb;
1238
1239         priv->iTDUsed[dma_idx]++;
1240
1241         /* Take ownership */
1242         wmb();
1243         head_td->m_td0TD0.f1Owner = OWNED_BY_NIC;
1244
1245         /* get Next */
1246         wmb();
1247         priv->apCurrTD[dma_idx] = head_td->next;
1248
1249         spin_unlock_irqrestore(&priv->lock, flags);
1250
1251         vnt_generate_fifo_header(priv, dma_idx, head_td, skb);
1252
1253         if (MACbIsRegBitsOn(priv->PortOffset, MAC_REG_PSCTL, PSCTL_PS))
1254                 MACbPSWakeup(priv->PortOffset);
1255
1256         spin_lock_irqsave(&priv->lock, flags);
1257
1258         priv->bPWBitOn = false;
1259
1260         head_td->pTDInfo->byFlags = TD_FLAGS_NETIF_SKB;
1261
1262         if (dma_idx == TYPE_AC0DMA)
1263                 MACvTransmitAC0(priv->PortOffset);
1264         else
1265                 MACvTransmit0(priv->PortOffset);
1266
1267         spin_unlock_irqrestore(&priv->lock, flags);
1268
1269         return 0;
1270 }
1271
1272 static void vnt_tx_80211(struct ieee80211_hw *hw,
1273                          struct ieee80211_tx_control *control,
1274                          struct sk_buff *skb)
1275 {
1276         struct vnt_private *priv = hw->priv;
1277
1278         ieee80211_stop_queues(hw);
1279
1280         if (vnt_tx_packet(priv, skb)) {
1281                 ieee80211_free_txskb(hw, skb);
1282
1283                 ieee80211_wake_queues(hw);
1284         }
1285 }
1286
1287 static int vnt_start(struct ieee80211_hw *hw)
1288 {
1289         struct vnt_private *priv = hw->priv;
1290         int ret;
1291
1292         priv->rx_buf_sz = PKT_BUF_SZ;
1293         if (!device_init_rings(priv))
1294                 return -ENOMEM;
1295
1296         ret = request_irq(priv->pcid->irq, &device_intr,
1297                           IRQF_SHARED, "vt6655", priv);
1298         if (ret) {
1299                 dev_dbg(&priv->pcid->dev, "failed to start irq\n");
1300                 return ret;
1301         }
1302
1303         dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
1304         device_init_rd0_ring(priv);
1305         device_init_rd1_ring(priv);
1306         device_init_td0_ring(priv);
1307         device_init_td1_ring(priv);
1308
1309         device_init_registers(priv);
1310
1311         dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
1312         MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
1313
1314         ieee80211_wake_queues(hw);
1315
1316         return 0;
1317 }
1318
1319 static void vnt_stop(struct ieee80211_hw *hw)
1320 {
1321         struct vnt_private *priv = hw->priv;
1322
1323         ieee80211_stop_queues(hw);
1324
1325         MACbShutdown(priv->PortOffset);
1326         MACbSoftwareReset(priv->PortOffset);
1327         CARDbRadioPowerOff(priv);
1328
1329         device_free_td0_ring(priv);
1330         device_free_td1_ring(priv);
1331         device_free_rd0_ring(priv);
1332         device_free_rd1_ring(priv);
1333         device_free_rings(priv);
1334
1335         free_irq(priv->pcid->irq, priv);
1336 }
1337
1338 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1339 {
1340         struct vnt_private *priv = hw->priv;
1341
1342         priv->vif = vif;
1343
1344         switch (vif->type) {
1345         case NL80211_IFTYPE_STATION:
1346                 if (priv->bDiversityRegCtlON)
1347                         device_init_diversity_timer(priv);
1348                 break;
1349         case NL80211_IFTYPE_ADHOC:
1350                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1351
1352                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1353
1354                 break;
1355         case NL80211_IFTYPE_AP:
1356                 MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);
1357
1358                 MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1359
1360                 break;
1361         default:
1362                 return -EOPNOTSUPP;
1363         }
1364
1365         priv->op_mode = vif->type;
1366
1367         return 0;
1368 }
1369
1370 static void vnt_remove_interface(struct ieee80211_hw *hw,
1371                                  struct ieee80211_vif *vif)
1372 {
1373         struct vnt_private *priv = hw->priv;
1374
1375         switch (vif->type) {
1376         case NL80211_IFTYPE_STATION:
1377                 if (priv->bDiversityRegCtlON) {
1378                         del_timer(&priv->TimerSQ3Tmax1);
1379                         del_timer(&priv->TimerSQ3Tmax2);
1380                         del_timer(&priv->TimerSQ3Tmax3);
1381                 }
1382                 break;
1383         case NL80211_IFTYPE_ADHOC:
1384                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1385                 MACvRegBitsOff(priv->PortOffset,
1386                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1387                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
1388                 break;
1389         case NL80211_IFTYPE_AP:
1390                 MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
1391                 MACvRegBitsOff(priv->PortOffset,
1392                                MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
1393                 MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
1394                 break;
1395         default:
1396                 break;
1397         }
1398
1399         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
1400 }
1401
1402
1403 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
1404 {
1405         struct vnt_private *priv = hw->priv;
1406         struct ieee80211_conf *conf = &hw->conf;
1407         u8 bb_type;
1408
1409         if (changed & IEEE80211_CONF_CHANGE_PS) {
1410                 if (conf->flags & IEEE80211_CONF_PS)
1411                         PSvEnablePowerSaving(priv, conf->listen_interval);
1412                 else
1413                         PSvDisablePowerSaving(priv);
1414         }
1415
1416         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
1417             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
1418                 set_channel(priv, conf->chandef.chan->hw_value);
1419
1420                 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
1421                         bb_type = BB_TYPE_11A;
1422                 else
1423                         bb_type = BB_TYPE_11G;
1424
1425                 if (priv->byBBType != bb_type) {
1426                         priv->byBBType = bb_type;
1427
1428                         CARDbSetPhyParameter(priv, priv->byBBType);
1429                 }
1430         }
1431
1432         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1433                 if (priv->byBBType == BB_TYPE_11B)
1434                         priv->wCurrentRate = RATE_1M;
1435                 else
1436                         priv->wCurrentRate = RATE_54M;
1437
1438                 RFbSetPower(priv, priv->wCurrentRate,
1439                             conf->chandef.chan->hw_value);
1440         }
1441
1442         return 0;
1443 }
1444
1445 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
1446                 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
1447                 u32 changed)
1448 {
1449         struct vnt_private *priv = hw->priv;
1450
1451         priv->current_aid = conf->aid;
1452
1453         if (changed & BSS_CHANGED_BSSID)
1454                 MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
1455
1456         if (changed & BSS_CHANGED_BASIC_RATES) {
1457                 priv->basic_rates = conf->basic_rates;
1458
1459                 CARDvUpdateBasicTopRate(priv);
1460
1461                 dev_dbg(&priv->pcid->dev,
1462                         "basic rates %x\n", conf->basic_rates);
1463         }
1464
1465         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1466                 if (conf->use_short_preamble) {
1467                         MACvEnableBarkerPreambleMd(priv->PortOffset);
1468                         priv->byPreambleType = true;
1469                 } else {
1470                         MACvDisableBarkerPreambleMd(priv->PortOffset);
1471                         priv->byPreambleType = false;
1472                 }
1473         }
1474
1475         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1476                 if (conf->use_cts_prot)
1477                         MACvEnableProtectMD(priv->PortOffset);
1478                 else
1479                         MACvDisableProtectMD(priv->PortOffset);
1480         }
1481
1482         if (changed & BSS_CHANGED_ERP_SLOT) {
1483                 if (conf->use_short_slot)
1484                         priv->bShortSlotTime = true;
1485                 else
1486                         priv->bShortSlotTime = false;
1487
1488                 CARDbSetPhyParameter(priv, priv->byBBType);
1489                 BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
1490         }
1491
1492         if (changed & BSS_CHANGED_TXPOWER)
1493                 RFbSetPower(priv, priv->wCurrentRate,
1494                             conf->chandef.chan->hw_value);
1495
1496         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1497                 dev_dbg(&priv->pcid->dev,
1498                         "Beacon enable %d\n", conf->enable_beacon);
1499
1500                 if (conf->enable_beacon) {
1501                         vnt_beacon_enable(priv, vif, conf);
1502
1503                         MACvRegBitsOn(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
1504                 } else {
1505                         MACvRegBitsOff(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
1506                 }
1507         }
1508
1509         if (changed & BSS_CHANGED_ASSOC && priv->op_mode != NL80211_IFTYPE_AP) {
1510                 if (conf->assoc) {
1511                         CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
1512                                        conf->sync_device_ts, conf->sync_tsf);
1513
1514                         CARDbSetBeaconPeriod(priv, conf->beacon_int);
1515
1516                         CARDvSetFirstNextTBTT(priv, conf->beacon_int);
1517                 } else {
1518                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1519                                      TFTCTL_TSFCNTRST);
1520                         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
1521                                      TFTCTL_TSFCNTREN);
1522                 }
1523         }
1524 }
1525
1526 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
1527         struct netdev_hw_addr_list *mc_list)
1528 {
1529         struct vnt_private *priv = hw->priv;
1530         struct netdev_hw_addr *ha;
1531         u64 mc_filter = 0;
1532         u32 bit_nr = 0;
1533
1534         netdev_hw_addr_list_for_each(ha, mc_list) {
1535                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1536
1537                 mc_filter |= 1ULL << (bit_nr & 0x3f);
1538         }
1539
1540         priv->mc_list_count = mc_list->count;
1541
1542         return mc_filter;
1543 }
1544
1545 static void vnt_configure(struct ieee80211_hw *hw,
1546         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
1547 {
1548         struct vnt_private *priv = hw->priv;
1549         u8 rx_mode = 0;
1550
1551         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_PROMISC_IN_BSS |
1552                 FIF_BCN_PRBRESP_PROMISC;
1553
1554         VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);
1555
1556         dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);
1557
1558         if (changed_flags & FIF_PROMISC_IN_BSS) {
1559                 /* unconditionally log net taps */
1560                 if (*total_flags & FIF_PROMISC_IN_BSS)
1561                         rx_mode |= RCR_UNICAST;
1562                 else
1563                         rx_mode &= ~RCR_UNICAST;
1564         }
1565
1566         if (changed_flags & FIF_ALLMULTI) {
1567                 if (*total_flags & FIF_ALLMULTI) {
1568                         if (priv->mc_list_count > 2) {
1569                                 MACvSelectPage1(priv->PortOffset);
1570
1571                                 VNSvOutPortD(priv->PortOffset +
1572                                              MAC_REG_MAR0, 0xffffffff);
1573                                 VNSvOutPortD(priv->PortOffset +
1574                                             MAC_REG_MAR0 + 4, 0xffffffff);
1575
1576                                 MACvSelectPage0(priv->PortOffset);
1577                         } else {
1578                                 MACvSelectPage1(priv->PortOffset);
1579
1580                                 VNSvOutPortD(priv->PortOffset +
1581                                              MAC_REG_MAR0, (u32)multicast);
1582                                 VNSvOutPortD(priv->PortOffset +
1583                                              MAC_REG_MAR0 + 4,
1584                                              (u32)(multicast >> 32));
1585
1586                                 MACvSelectPage0(priv->PortOffset);
1587                         }
1588
1589                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1590                 } else {
1591                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
1592                 }
1593         }
1594
1595         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
1596                 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
1597
1598                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
1599                         rx_mode &= ~RCR_BSSID;
1600                 else
1601                         rx_mode |= RCR_BSSID;
1602         }
1603
1604         VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);
1605
1606         dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
1607 }
1608
1609 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1610         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
1611                 struct ieee80211_key_conf *key)
1612 {
1613         struct vnt_private *priv = hw->priv;
1614
1615         switch (cmd) {
1616         case SET_KEY:
1617                 if (vnt_set_keys(hw, sta, vif, key))
1618                         return -EOPNOTSUPP;
1619                 break;
1620         case DISABLE_KEY:
1621                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
1622                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
1623         default:
1624                 break;
1625         }
1626
1627         return 0;
1628 }
1629
1630 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1631 {
1632         struct vnt_private *priv = hw->priv;
1633         u64 tsf;
1634
1635         CARDbGetCurrentTSF(priv, &tsf);
1636
1637         return tsf;
1638 }
1639
1640 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1641                         u64 tsf)
1642 {
1643         struct vnt_private *priv = hw->priv;
1644
1645         CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
1646 }
1647
1648 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1649 {
1650         struct vnt_private *priv = hw->priv;
1651
1652         /* reset TSF counter */
1653         VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
1654 }
1655
1656 static const struct ieee80211_ops vnt_mac_ops = {
1657         .tx                     = vnt_tx_80211,
1658         .start                  = vnt_start,
1659         .stop                   = vnt_stop,
1660         .add_interface          = vnt_add_interface,
1661         .remove_interface       = vnt_remove_interface,
1662         .config                 = vnt_config,
1663         .bss_info_changed       = vnt_bss_info_changed,
1664         .prepare_multicast      = vnt_prepare_multicast,
1665         .configure_filter       = vnt_configure,
1666         .set_key                = vnt_set_key,
1667         .get_tsf                = vnt_get_tsf,
1668         .set_tsf                = vnt_set_tsf,
1669         .reset_tsf              = vnt_reset_tsf,
1670 };
1671
1672 int vnt_init(struct vnt_private *priv)
1673 {
1674         SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
1675
1676         vnt_init_bands(priv);
1677
1678         if (ieee80211_register_hw(priv->hw))
1679                 return -ENODEV;
1680
1681         priv->mac_hw = true;
1682
1683         CARDbRadioPowerOff(priv);
1684
1685         return 0;
1686 }
1687
1688 static int
1689 vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
1690 {
1691         PCHIP_INFO  pChip_info = (PCHIP_INFO)ent->driver_data;
1692         struct vnt_private *priv;
1693         struct ieee80211_hw *hw;
1694         struct wiphy *wiphy;
1695         int         rc;
1696
1697         dev_notice(&pcid->dev,
1698                    "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1699
1700         dev_notice(&pcid->dev,
1701                    "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");
1702
1703         hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
1704         if (!hw) {
1705                 dev_err(&pcid->dev, "could not register ieee80211_hw\n");
1706                 return -ENOMEM;
1707         }
1708
1709         priv = hw->priv;
1710
1711         vt6655_init_info(pcid, &priv, pChip_info);
1712
1713         priv->hw = hw;
1714
1715         SET_IEEE80211_DEV(priv->hw, &pcid->dev);
1716
1717         if (pci_enable_device(pcid)) {
1718                 device_free_info(priv);
1719                 return -ENODEV;
1720         }
1721
1722         dev_dbg(&pcid->dev,
1723                 "Before get pci_info memaddr is %x\n", priv->memaddr);
1724
1725         if (!device_get_pci_info(priv, pcid)) {
1726                 dev_err(&pcid->dev, ": Failed to find PCI device.\n");
1727                 device_free_info(priv);
1728                 return -ENODEV;
1729         }
1730
1731 #ifdef  DEBUG
1732         dev_dbg(&pcid->dev,
1733                 "after get pci_info memaddr is %x, io addr is %x,io_size is %d\n",
1734                 priv->memaddr, priv->ioaddr, priv->io_size);
1735         {
1736                 int i;
1737                 u32 bar, len;
1738                 u32 address[] = {
1739                         PCI_BASE_ADDRESS_0,
1740                         PCI_BASE_ADDRESS_1,
1741                         PCI_BASE_ADDRESS_2,
1742                         PCI_BASE_ADDRESS_3,
1743                         PCI_BASE_ADDRESS_4,
1744                         PCI_BASE_ADDRESS_5,
1745                         0};
1746                 for (i = 0; address[i]; i++) {
1747                         pci_read_config_dword(pcid, address[i], &bar);
1748
1749                         dev_dbg(&pcid->dev, "bar %d is %x\n", i, bar);
1750
1751                         if (!bar) {
1752                                 dev_dbg(&pcid->dev,
1753                                         "bar %d not implemented\n", i);
1754                                 continue;
1755                         }
1756
1757                         if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
1758                                 /* This is IO */
1759
1760                                 len = bar & (PCI_BASE_ADDRESS_IO_MASK & 0xffff);
1761                                 len = len & ~(len - 1);
1762
1763                                 dev_dbg(&pcid->dev,
1764                                         "IO space:  len in IO %x, BAR %d\n",
1765                                         len, i);
1766                         } else {
1767                                 len = bar & 0xfffffff0;
1768                                 len = ~len + 1;
1769
1770                                 dev_dbg(&pcid->dev,
1771                                         "len in MEM %x, BAR %d\n", len, i);
1772                         }
1773                 }
1774         }
1775 #endif
1776
1777         priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
1778                                    priv->io_size);
1779         if (!priv->PortOffset) {
1780                 dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
1781                 device_free_info(priv);
1782                 return -ENODEV;
1783         }
1784
1785         rc = pci_request_regions(pcid, DEVICE_NAME);
1786         if (rc) {
1787                 dev_err(&pcid->dev, ": Failed to find PCI device\n");
1788                 device_free_info(priv);
1789                 return -ENODEV;
1790         }
1791
1792         /* do reset */
1793         if (!MACbSoftwareReset(priv->PortOffset)) {
1794                 dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
1795                 device_free_info(priv);
1796                 return -ENODEV;
1797         }
1798         /* initial to reload eeprom */
1799         MACvInitialize(priv->PortOffset);
1800         MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
1801
1802         device_get_options(priv);
1803         device_set_options(priv);
1804         /* Mask out the options cannot be set to the chip */
1805         priv->sOpts.flags &= pChip_info->flags;
1806
1807         /* Enable the chip specified capabilities */
1808         priv->flags = priv->sOpts.flags | (pChip_info->flags & 0xff000000UL);
1809
1810         wiphy = priv->hw->wiphy;
1811
1812         wiphy->frag_threshold = FRAG_THRESH_DEF;
1813         wiphy->rts_threshold = RTS_THRESH_DEF;
1814         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1815                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1816
1817         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1818                 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
1819                 IEEE80211_HW_SIGNAL_DBM |
1820                 IEEE80211_HW_TIMING_BEACON_ONLY;
1821
1822         priv->hw->max_signal = 100;
1823
1824         if (vnt_init(priv))
1825                 return -ENODEV;
1826
1827         device_print_info(priv);
1828         pci_set_drvdata(pcid, priv);
1829
1830         return 0;
1831 }
1832
1833 /*------------------------------------------------------------------*/
1834
1835 #ifdef CONFIG_PM
1836 static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
1837 {
1838         struct vnt_private *priv = pci_get_drvdata(pcid);
1839         unsigned long flags;
1840
1841         spin_lock_irqsave(&priv->lock, flags);
1842
1843         pci_save_state(pcid);
1844
1845         MACbShutdown(priv->PortOffset);
1846
1847         pci_disable_device(pcid);
1848         pci_set_power_state(pcid, pci_choose_state(pcid, state));
1849
1850         spin_unlock_irqrestore(&priv->lock, flags);
1851
1852         return 0;
1853 }
1854
1855 static int vt6655_resume(struct pci_dev *pcid)
1856 {
1857
1858         pci_set_power_state(pcid, PCI_D0);
1859         pci_enable_wake(pcid, PCI_D0, 0);
1860         pci_restore_state(pcid);
1861
1862         return 0;
1863 }
1864 #endif
1865
1866 MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);
1867
1868 static struct pci_driver device_driver = {
1869         .name = DEVICE_NAME,
1870         .id_table = vt6655_pci_id_table,
1871         .probe = vt6655_probe,
1872         .remove = vt6655_remove,
1873 #ifdef CONFIG_PM
1874         .suspend = vt6655_suspend,
1875         .resume = vt6655_resume,
1876 #endif
1877 };
1878
1879 static int __init vt6655_init_module(void)
1880 {
1881         int ret;
1882
1883         ret = pci_register_driver(&device_driver);
1884 #ifdef CONFIG_PM
1885         if (ret >= 0)
1886                 register_reboot_notifier(&device_notifier);
1887 #endif
1888
1889         return ret;
1890 }
1891
1892 static void __exit vt6655_cleanup_module(void)
1893 {
1894 #ifdef CONFIG_PM
1895         unregister_reboot_notifier(&device_notifier);
1896 #endif
1897         pci_unregister_driver(&device_driver);
1898 }
1899
1900 module_init(vt6655_init_module);
1901 module_exit(vt6655_cleanup_module);
1902
1903 #ifdef CONFIG_PM
1904 static int
1905 device_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
1906 {
1907         struct pci_dev *pdev = NULL;
1908
1909         switch (event) {
1910         case SYS_DOWN:
1911         case SYS_HALT:
1912         case SYS_POWER_OFF:
1913                 for_each_pci_dev(pdev) {
1914                         if (pci_dev_driver(pdev) == &device_driver) {
1915                                 if (pci_get_drvdata(pdev))
1916                                         vt6655_suspend(pdev, PMSG_HIBERNATE);
1917                         }
1918                 }
1919         }
1920         return NOTIFY_DONE;
1921 }
1922 #endif