kernel/2.6.29.6-aldebaran-rt/drivers/net/irda/via-ircc.h

   1 /*********************************************************************
   2  *
   3  * Filename:      via-ircc.h
   4  * Version:       1.0
   5  * Description:   Driver for the VIA VT8231/VT8233 IrDA chipsets
   6  * Author:        VIA Technologies, inc
   7  * Date  :        08/06/2003
   8
   9 Copyright (c) 1998-2003 VIA Technologies, Inc.
  10
  11 This program is free software; you can redistribute it and/or modify it under
  12 the terms of the GNU General Public License as published by the Free Software
  13 Foundation; either version 2, or (at your option) any later version.
  14
  15 This program is distributed in the hope that it will be useful, but WITHOUT
  16 ANY WARRANTIES OR REPRESENTATIONS; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  18 See the GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License along with
  21 this program; if not, write to the Free Software Foundation, Inc.,
  22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23
  24  * Comment:
  25  * jul/08/2002 : Rx buffer length should use Rx ring ptr.
  26  * Oct/28/2002 : Add SB id for 3147 and 3177.
  27  * jul/09/2002 : only implement two kind of dongle currently.
  28  * Oct/02/2002 : work on VT8231 and VT8233 .
  29  * Aug/06/2003 : change driver format to pci driver .
  30  ********************************************************************/
  31 #ifndef via_IRCC_H
  32 #define via_IRCC_H
  33 #include <linux/time.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/pm.h>
  36 #include <linux/types.h>
  37 #include <asm/io.h>
  38
  39 #define MAX_TX_WINDOW 7
  40 #define MAX_RX_WINDOW 7
  41
  42 struct st_fifo_entry {
  43         int status;
  44         int len;
  45 };
  46
  47 struct st_fifo {
  48         struct st_fifo_entry entries[MAX_RX_WINDOW + 2];
  49         int pending_bytes;
  50         int head;
  51         int tail;
  52         int len;
  53 };
  54
  55 struct frame_cb {
  56         void *start;            /* Start of frame in DMA mem */
  57         int len;                /* Length of frame in DMA mem */
  58 };
  59
  60 struct tx_fifo {
  61         struct frame_cb queue[MAX_TX_WINDOW + 2];       /* Info about frames in queue */
  62         int ptr;                /* Currently being sent */
  63         int len;                /* Length of queue */
  64         int free;               /* Next free slot */
  65         void *tail;             /* Next free start in DMA mem */
  66 };
  67
  68
  69 struct eventflag                // for keeping track of Interrupt Events
  70 {
  71         //--------tx part
  72         unsigned char TxFIFOUnderRun;
  73         unsigned char EOMessage;
  74         unsigned char TxFIFOReady;
  75         unsigned char EarlyEOM;
  76         //--------rx part
  77         unsigned char PHYErr;
  78         unsigned char CRCErr;
  79         unsigned char RxFIFOOverRun;
  80         unsigned char EOPacket;
  81         unsigned char RxAvail;
  82         unsigned char TooLargePacket;
  83         unsigned char SIRBad;
  84         //--------unknown
  85         unsigned char Unknown;
  86         //----------
  87         unsigned char TimeOut;
  88         unsigned char RxDMATC;
  89         unsigned char TxDMATC;
  90 };
  91
  92 /* Private data for each instance */
  93 struct via_ircc_cb {
  94         struct st_fifo st_fifo; /* Info about received frames */
  95         struct tx_fifo tx_fifo; /* Info about frames to be transmitted */
  96
  97         struct net_device *netdev;      /* Yes! we are some kind of netdevice */
  98
  99         struct irlap_cb *irlap; /* The link layer we are binded to */
 100         struct qos_info qos;    /* QoS capabilities for this device */
 101
 102         chipio_t io;            /* IrDA controller information */
 103         iobuff_t tx_buff;       /* Transmit buffer */
 104         iobuff_t rx_buff;       /* Receive buffer */
 105         dma_addr_t tx_buff_dma;
 106         dma_addr_t rx_buff_dma;
 107
 108         __u8 ier;               /* Interrupt enable register */
 109
 110         struct timeval stamp;
 111         struct timeval now;
 112
 113         spinlock_t lock;        /* For serializing operations */
 114
 115         __u32 flags;            /* Interface flags */
 116         __u32 new_speed;
 117         int index;              /* Instance index */
 118
 119         struct eventflag EventFlag;
 120         unsigned int chip_id;   /* to remember chip id */
 121         unsigned int RetryCount;
 122         unsigned int RxDataReady;
 123         unsigned int RxLastCount;
 124 };
 125
 126
 127 //---------I=Infrared,  H=Host, M=Misc, T=Tx, R=Rx, ST=Status,
 128 //         CF=Config, CT=Control, L=Low, H=High, C=Count
 129 #define  I_CF_L_0               0x10
 130 #define  I_CF_H_0               0x11
 131 #define  I_SIR_BOF              0x12
 132 #define  I_SIR_EOF              0x13
 133 #define  I_ST_CT_0              0x15
 134 #define  I_ST_L_1               0x16
 135 #define  I_ST_H_1               0x17
 136 #define  I_CF_L_1               0x18
 137 #define  I_CF_H_1               0x19
 138 #define  I_CF_L_2               0x1a
 139 #define  I_CF_H_2               0x1b
 140 #define  I_CF_3         0x1e
 141 #define  H_CT                   0x20
 142 #define  H_ST                   0x21
 143 #define  M_CT                   0x22
 144 #define  TX_CT_1                0x23
 145 #define  TX_CT_2                0x24
 146 #define  TX_ST                  0x25
 147 #define  RX_CT                  0x26
 148 #define  RX_ST                  0x27
 149 #define  RESET                  0x28
 150 #define  P_ADDR         0x29
 151 #define  RX_C_L         0x2a
 152 #define  RX_C_H         0x2b
 153 #define  RX_P_L         0x2c
 154 #define  RX_P_H         0x2d
 155 #define  TX_C_L         0x2e
 156 #define  TX_C_H         0x2f
 157 #define  TIMER          0x32
 158 #define  I_CF_4                 0x33
 159 #define  I_T_C_L                0x34
 160 #define  I_T_C_H                0x35
 161 #define  VERSION                0x3f
 162 //-------------------------------
 163 #define StartAddr       0x10    // the first register address
 164 #define EndAddr         0x3f    // the last register address
 165 #define GetBit(val,bit)  val = (unsigned char) ((val>>bit) & 0x1)
 166                         // Returns the bit
 167 #define SetBit(val,bit)  val= (unsigned char ) (val | (0x1 << bit))
 168                         // Sets bit to 1
 169 #define ResetBit(val,bit) val= (unsigned char ) (val & ~(0x1 << bit))
 170                         // Sets bit to 0
 171
 172 #define OFF   0
 173 #define ON   1
 174 #define DMA_TX_MODE   0x08
 175 #define DMA_RX_MODE   0x04
 176
 177 #define DMA1   0
 178 #define DMA2   0xc0
 179 #define MASK1   DMA1+0x0a
 180 #define MASK2   DMA2+0x14
 181
 182 #define Clk_bit 0x40
 183 #define Tx_bit 0x01
 184 #define Rd_Valid 0x08
 185 #define RxBit 0x08
 186
 187 static void DisableDmaChannel(unsigned int channel)
 188 {
 189         switch (channel) {      // 8 Bit DMA channels DMAC1
 190         case 0:
 191                 outb(4, MASK1); //mask channel 0
 192                 break;
 193         case 1:
 194                 outb(5, MASK1); //Mask channel 1
 195                 break;
 196         case 2:
 197                 outb(6, MASK1); //Mask channel 2
 198                 break;
 199         case 3:
 200                 outb(7, MASK1); //Mask channel 3
 201                 break;
 202         case 5:
 203                 outb(5, MASK2); //Mask channel 5
 204                 break;
 205         case 6:
 206                 outb(6, MASK2); //Mask channel 6
 207                 break;
 208         case 7:
 209                 outb(7, MASK2); //Mask channel 7
 210                 break;
 211         default:
 212                 break;
 213         };                      //Switch
 214 }
 215
 216 static unsigned char ReadLPCReg(int iRegNum)
 217 {
 218         unsigned char iVal;
 219
 220         outb(0x87, 0x2e);
 221         outb(0x87, 0x2e);
 222         outb(iRegNum, 0x2e);
 223         iVal = inb(0x2f);
 224         outb(0xaa, 0x2e);
 225
 226         return iVal;
 227 }
 228
 229 static void WriteLPCReg(int iRegNum, unsigned char iVal)
 230 {
 231
 232         outb(0x87, 0x2e);
 233         outb(0x87, 0x2e);
 234         outb(iRegNum, 0x2e);
 235         outb(iVal, 0x2f);
 236         outb(0xAA, 0x2e);
 237 }
 238
 239 static __u8 ReadReg(unsigned int BaseAddr, int iRegNum)
 240 {
 241         return ((__u8) inb(BaseAddr + iRegNum));
 242 }
 243
 244 static void WriteReg(unsigned int BaseAddr, int iRegNum, unsigned char iVal)
 245 {
 246         outb(iVal, BaseAddr + iRegNum);
 247 }
 248
 249 static int WriteRegBit(unsigned int BaseAddr, unsigned char RegNum,
 250                 unsigned char BitPos, unsigned char value)
 251 {
 252         __u8 Rtemp, Wtemp;
 253
 254         if (BitPos > 7) {
 255                 return -1;
 256         }
 257         if ((RegNum < StartAddr) || (RegNum > EndAddr))
 258                 return -1;
 259         Rtemp = ReadReg(BaseAddr, RegNum);
 260         if (value == 0)
 261                 Wtemp = ResetBit(Rtemp, BitPos);
 262         else {
 263                 if (value == 1)
 264                         Wtemp = SetBit(Rtemp, BitPos);
 265                 else
 266                         return -1;
 267         }
 268         WriteReg(BaseAddr, RegNum, Wtemp);
 269         return 0;
 270 }
 271
 272 static __u8 CheckRegBit(unsigned int BaseAddr, unsigned char RegNum,
 273                  unsigned char BitPos)
 274 {
 275         __u8 temp;
 276
 277         if (BitPos > 7)
 278                 return 0xff;
 279         if ((RegNum < StartAddr) || (RegNum > EndAddr)) {
 280 //     printf("what is the register %x!\n",RegNum);
 281         }
 282         temp = ReadReg(BaseAddr, RegNum);
 283         return GetBit(temp, BitPos);
 284 }
 285
 286 static void SetMaxRxPacketSize(__u16 iobase, __u16 size)
 287 {
 288         __u16 low, high;
 289         if ((size & 0xe000) == 0) {
 290                 low = size & 0x00ff;
 291                 high = (size & 0x1f00) >> 8;
 292                 WriteReg(iobase, I_CF_L_2, low);
 293                 WriteReg(iobase, I_CF_H_2, high);
 294
 295         }
 296
 297 }
 298
 299 //for both Rx and Tx
 300
 301 static void SetFIFO(__u16 iobase, __u16 value)
 302 {
 303         switch (value) {
 304         case 128:
 305                 WriteRegBit(iobase, 0x11, 0, 0);
 306                 WriteRegBit(iobase, 0x11, 7, 1);
 307                 break;
 308         case 64:
 309                 WriteRegBit(iobase, 0x11, 0, 0);
 310                 WriteRegBit(iobase, 0x11, 7, 0);
 311                 break;
 312         case 32:
 313                 WriteRegBit(iobase, 0x11, 0, 1);
 314                 WriteRegBit(iobase, 0x11, 7, 0);
 315                 break;
 316         default:
 317                 WriteRegBit(iobase, 0x11, 0, 0);
 318                 WriteRegBit(iobase, 0x11, 7, 0);
 319         }
 320
 321 }
 322
 323 #define CRC16(BaseAddr,val)         WriteRegBit(BaseAddr,I_CF_L_0,7,val)        //0 for 32 CRC
 324 /*
 325 #define SetVFIR(BaseAddr,val)       WriteRegBit(BaseAddr,I_CF_H_0,5,val)
 326 #define SetFIR(BaseAddr,val)        WriteRegBit(BaseAddr,I_CF_L_0,6,val)
 327 #define SetMIR(BaseAddr,val)        WriteRegBit(BaseAddr,I_CF_L_0,5,val)
 328 #define SetSIR(BaseAddr,val)        WriteRegBit(BaseAddr,I_CF_L_0,4,val)
 329 */
 330 #define SIRFilter(BaseAddr,val)     WriteRegBit(BaseAddr,I_CF_L_0,3,val)
 331 #define Filter(BaseAddr,val)        WriteRegBit(BaseAddr,I_CF_L_0,2,val)
 332 #define InvertTX(BaseAddr,val)      WriteRegBit(BaseAddr,I_CF_L_0,1,val)
 333 #define InvertRX(BaseAddr,val)      WriteRegBit(BaseAddr,I_CF_L_0,0,val)
 334 //****************************I_CF_H_0
 335 #define EnableTX(BaseAddr,val)      WriteRegBit(BaseAddr,I_CF_H_0,4,val)
 336 #define EnableRX(BaseAddr,val)      WriteRegBit(BaseAddr,I_CF_H_0,3,val)
 337 #define EnableDMA(BaseAddr,val)     WriteRegBit(BaseAddr,I_CF_H_0,2,val)
 338 #define SIRRecvAny(BaseAddr,val)    WriteRegBit(BaseAddr,I_CF_H_0,1,val)
 339 #define DiableTrans(BaseAddr,val)   WriteRegBit(BaseAddr,I_CF_H_0,0,val)
 340 //***************************I_SIR_BOF,I_SIR_EOF
 341 #define SetSIRBOF(BaseAddr,val)     WriteReg(BaseAddr,I_SIR_BOF,val)
 342 #define SetSIREOF(BaseAddr,val)     WriteReg(BaseAddr,I_SIR_EOF,val)
 343 #define GetSIRBOF(BaseAddr)        ReadReg(BaseAddr,I_SIR_BOF)
 344 #define GetSIREOF(BaseAddr)        ReadReg(BaseAddr,I_SIR_EOF)
 345 //*******************I_ST_CT_0
 346 #define EnPhys(BaseAddr,val)   WriteRegBit(BaseAddr,I_ST_CT_0,7,val)
 347 #define IsModeError(BaseAddr) CheckRegBit(BaseAddr,I_ST_CT_0,6) //RO
 348 #define IsVFIROn(BaseAddr)     CheckRegBit(BaseAddr,0x14,0)     //RO for VT1211 only
 349 #define IsFIROn(BaseAddr)     CheckRegBit(BaseAddr,I_ST_CT_0,5) //RO
 350 #define IsMIROn(BaseAddr)     CheckRegBit(BaseAddr,I_ST_CT_0,4) //RO
 351 #define IsSIROn(BaseAddr)     CheckRegBit(BaseAddr,I_ST_CT_0,3) //RO
 352 #define IsEnableTX(BaseAddr)  CheckRegBit(BaseAddr,I_ST_CT_0,2) //RO
 353 #define IsEnableRX(BaseAddr)  CheckRegBit(BaseAddr,I_ST_CT_0,1) //RO
 354 #define Is16CRC(BaseAddr)     CheckRegBit(BaseAddr,I_ST_CT_0,0) //RO
 355 //***************************I_CF_3
 356 #define DisableAdjacentPulseWidth(BaseAddr,val) WriteRegBit(BaseAddr,I_CF_3,5,val)      //1 disable
 357 #define DisablePulseWidthAdjust(BaseAddr,val)   WriteRegBit(BaseAddr,I_CF_3,4,val)      //1 disable
 358 #define UseOneRX(BaseAddr,val)                  WriteRegBit(BaseAddr,I_CF_3,1,val)      //0 use two RX
 359 #define SlowIRRXLowActive(BaseAddr,val)         WriteRegBit(BaseAddr,I_CF_3,0,val)      //0 show RX high=1 in SIR
 360 //***************************H_CT
 361 #define EnAllInt(BaseAddr,val)   WriteRegBit(BaseAddr,H_CT,7,val)
 362 #define TXStart(BaseAddr,val)    WriteRegBit(BaseAddr,H_CT,6,val)
 363 #define RXStart(BaseAddr,val)    WriteRegBit(BaseAddr,H_CT,5,val)
 364 #define ClearRXInt(BaseAddr,val)   WriteRegBit(BaseAddr,H_CT,4,val)     // 1 clear
 365 //*****************H_ST
 366 #define IsRXInt(BaseAddr)           CheckRegBit(BaseAddr,H_ST,4)
 367 #define GetIntIndentify(BaseAddr)   ((ReadReg(BaseAddr,H_ST)&0xf1) >>1)
 368 #define IsHostBusy(BaseAddr)        CheckRegBit(BaseAddr,H_ST,0)
 369 #define GetHostStatus(BaseAddr)     ReadReg(BaseAddr,H_ST)      //RO
 370 //**************************M_CT
 371 #define EnTXDMA(BaseAddr,val)         WriteRegBit(BaseAddr,M_CT,7,val)
 372 #define EnRXDMA(BaseAddr,val)         WriteRegBit(BaseAddr,M_CT,6,val)
 373 #define SwapDMA(BaseAddr,val)         WriteRegBit(BaseAddr,M_CT,5,val)
 374 #define EnInternalLoop(BaseAddr,val)  WriteRegBit(BaseAddr,M_CT,4,val)
 375 #define EnExternalLoop(BaseAddr,val)  WriteRegBit(BaseAddr,M_CT,3,val)
 376 //**************************TX_CT_1
 377 #define EnTXFIFOHalfLevelInt(BaseAddr,val)   WriteRegBit(BaseAddr,TX_CT_1,4,val)        //half empty int (1 half)
 378 #define EnTXFIFOUnderrunEOMInt(BaseAddr,val) WriteRegBit(BaseAddr,TX_CT_1,5,val)
 379 #define EnTXFIFOReadyInt(BaseAddr,val)       WriteRegBit(BaseAddr,TX_CT_1,6,val)        //int when reach it threshold (setting by bit 4)
 380 //**************************TX_CT_2
 381 #define ForceUnderrun(BaseAddr,val)   WriteRegBit(BaseAddr,TX_CT_2,7,val)       // force an underrun int
 382 #define EnTXCRC(BaseAddr,val)         WriteRegBit(BaseAddr,TX_CT_2,6,val)       //1 for FIR,MIR...0 (not SIR)
 383 #define ForceBADCRC(BaseAddr,val)     WriteRegBit(BaseAddr,TX_CT_2,5,val)       //force an bad CRC
 384 #define SendSIP(BaseAddr,val)         WriteRegBit(BaseAddr,TX_CT_2,4,val)       //send indication pulse for prevent SIR disturb
 385 #define ClearEnTX(BaseAddr,val)       WriteRegBit(BaseAddr,TX_CT_2,3,val)       // opposite to EnTX
 386 //*****************TX_ST
 387 #define GetTXStatus(BaseAddr)   ReadReg(BaseAddr,TX_ST) //RO
 388 //**************************RX_CT
 389 #define EnRXSpecInt(BaseAddr,val)           WriteRegBit(BaseAddr,RX_CT,0,val)
 390 #define EnRXFIFOReadyInt(BaseAddr,val)      WriteRegBit(BaseAddr,RX_CT,1,val)   //enable int when reach it threshold (setting by bit 7)
 391 #define EnRXFIFOHalfLevelInt(BaseAddr,val)  WriteRegBit(BaseAddr,RX_CT,7,val)   //enable int when (1) half full...or (0) just not full
 392 //*****************RX_ST
 393 #define GetRXStatus(BaseAddr)   ReadReg(BaseAddr,RX_ST) //RO
 394 //***********************P_ADDR
 395 #define SetPacketAddr(BaseAddr,addr)        WriteReg(BaseAddr,P_ADDR,addr)
 396 //***********************I_CF_4
 397 #define EnGPIOtoRX2(BaseAddr,val)       WriteRegBit(BaseAddr,I_CF_4,7,val)
 398 #define EnTimerInt(BaseAddr,val)                WriteRegBit(BaseAddr,I_CF_4,1,val)
 399 #define ClearTimerInt(BaseAddr,val)     WriteRegBit(BaseAddr,I_CF_4,0,val)
 400 //***********************I_T_C_L
 401 #define WriteGIO(BaseAddr,val)      WriteRegBit(BaseAddr,I_T_C_L,7,val)
 402 #define ReadGIO(BaseAddr)                   CheckRegBit(BaseAddr,I_T_C_L,7)
 403 #define ReadRX(BaseAddr)                    CheckRegBit(BaseAddr,I_T_C_L,3)     //RO
 404 #define WriteTX(BaseAddr,val)           WriteRegBit(BaseAddr,I_T_C_L,0,val)
 405 //***********************I_T_C_H
 406 #define EnRX2(BaseAddr,val)                 WriteRegBit(BaseAddr,I_T_C_H,7,val)
 407 #define ReadRX2(BaseAddr)           CheckRegBit(BaseAddr,I_T_C_H,7)
 408 //**********************Version
 409 #define GetFIRVersion(BaseAddr)         ReadReg(BaseAddr,VERSION)
 410
 411
 412 static void SetTimer(__u16 iobase, __u8 count)
 413 {
 414         EnTimerInt(iobase, OFF);
 415         WriteReg(iobase, TIMER, count);
 416         EnTimerInt(iobase, ON);
 417 }
 418
 419
 420 static void SetSendByte(__u16 iobase, __u32 count)
 421 {
 422         __u32 low, high;
 423
 424         if ((count & 0xf000) == 0) {
 425                 low = count & 0x00ff;
 426                 high = (count & 0x0f00) >> 8;
 427                 WriteReg(iobase, TX_C_L, low);
 428                 WriteReg(iobase, TX_C_H, high);
 429         }
 430 }
 431
 432 static void ResetChip(__u16 iobase, __u8 type)
 433 {
 434         __u8 value;
 435
 436         value = (type + 2) << 4;
 437         WriteReg(iobase, RESET, type);
 438 }
 439
 440 static int CkRxRecv(__u16 iobase, struct via_ircc_cb *self)
 441 {
 442         __u8 low, high;
 443         __u16 wTmp = 0, wTmp1 = 0, wTmp_new = 0;
 444
 445         low = ReadReg(iobase, RX_C_L);
 446         high = ReadReg(iobase, RX_C_H);
 447         wTmp1 = high;
 448         wTmp = (wTmp1 << 8) | low;
 449         udelay(10);
 450         low = ReadReg(iobase, RX_C_L);
 451         high = ReadReg(iobase, RX_C_H);
 452         wTmp1 = high;
 453         wTmp_new = (wTmp1 << 8) | low;
 454         if (wTmp_new != wTmp)
 455                 return 1;
 456         else
 457                 return 0;
 458
 459 }
 460
 461 static __u16 RxCurCount(__u16 iobase, struct via_ircc_cb * self)
 462 {
 463         __u8 low, high;
 464         __u16 wTmp = 0, wTmp1 = 0;
 465
 466         low = ReadReg(iobase, RX_P_L);
 467         high = ReadReg(iobase, RX_P_H);
 468         wTmp1 = high;
 469         wTmp = (wTmp1 << 8) | low;
 470         return wTmp;
 471 }
 472
 473 /* This Routine can only use in recevie_complete
 474  * for it will update last count.
 475  */
 476
 477 static __u16 GetRecvByte(__u16 iobase, struct via_ircc_cb * self)
 478 {
 479         __u8 low, high;
 480         __u16 wTmp, wTmp1, ret;
 481
 482         low = ReadReg(iobase, RX_P_L);
 483         high = ReadReg(iobase, RX_P_H);
 484         wTmp1 = high;
 485         wTmp = (wTmp1 << 8) | low;
 486
 487
 488         if (wTmp >= self->RxLastCount)
 489                 ret = wTmp - self->RxLastCount;
 490         else
 491                 ret = (0x8000 - self->RxLastCount) + wTmp;
 492         self->RxLastCount = wTmp;
 493
 494 /* RX_P is more actually the RX_C
 495  low=ReadReg(iobase,RX_C_L);
 496  high=ReadReg(iobase,RX_C_H);
 497
 498  if(!(high&0xe000)) {
 499          temp=(high<<8)+low;
 500          return temp;
 501  }
 502  else return 0;
 503 */
 504         return ret;
 505 }
 506
 507 static void Sdelay(__u16 scale)
 508 {
 509         __u8 bTmp;
 510         int i, j;
 511
 512         for (j = 0; j < scale; j++) {
 513                 for (i = 0; i < 0x20; i++) {
 514                         bTmp = inb(0xeb);
 515                         outb(bTmp, 0xeb);
 516                 }
 517         }
 518 }
 519
 520 static void Tdelay(__u16 scale)
 521 {
 522         __u8 bTmp;
 523         int i, j;
 524
 525         for (j = 0; j < scale; j++) {
 526                 for (i = 0; i < 0x50; i++) {
 527                         bTmp = inb(0xeb);
 528                         outb(bTmp, 0xeb);
 529                 }
 530         }
 531 }
 532
 533
 534 static void ActClk(__u16 iobase, __u8 value)
 535 {
 536         __u8 bTmp;
 537         bTmp = ReadReg(iobase, 0x34);
 538         if (value)
 539                 WriteReg(iobase, 0x34, bTmp | Clk_bit);
 540         else
 541                 WriteReg(iobase, 0x34, bTmp & ~Clk_bit);
 542 }
 543
 544 static void ClkTx(__u16 iobase, __u8 Clk, __u8 Tx)
 545 {
 546         __u8 bTmp;
 547
 548         bTmp = ReadReg(iobase, 0x34);
 549         if (Clk == 0)
 550                 bTmp &= ~Clk_bit;
 551         else {
 552                 if (Clk == 1)
 553                         bTmp |= Clk_bit;
 554         }
 555         WriteReg(iobase, 0x34, bTmp);
 556         Sdelay(1);
 557         if (Tx == 0)
 558                 bTmp &= ~Tx_bit;
 559         else {
 560                 if (Tx == 1)
 561                         bTmp |= Tx_bit;
 562         }
 563         WriteReg(iobase, 0x34, bTmp);
 564 }
 565
 566 static void Wr_Byte(__u16 iobase, __u8 data)
 567 {
 568         __u8 bData = data;
 569 //      __u8 btmp;
 570         int i;
 571
 572         ClkTx(iobase, 0, 1);
 573
 574         Tdelay(2);
 575         ActClk(iobase, 1);
 576         Tdelay(1);
 577
 578         for (i = 0; i < 8; i++) {       //LDN
 579
 580                 if ((bData >> i) & 0x01) {
 581                         ClkTx(iobase, 0, 1);    //bit data = 1;
 582                 } else {
 583                         ClkTx(iobase, 0, 0);    //bit data = 1;
 584                 }
 585                 Tdelay(2);
 586                 Sdelay(1);
 587                 ActClk(iobase, 1);      //clk hi
 588                 Tdelay(1);
 589         }
 590 }
 591
 592 static __u8 Rd_Indx(__u16 iobase, __u8 addr, __u8 index)
 593 {
 594         __u8 data = 0, bTmp, data_bit;
 595         int i;
 596
 597         bTmp = addr | (index << 1) | 0;
 598         ClkTx(iobase, 0, 0);
 599         Tdelay(2);
 600         ActClk(iobase, 1);
 601         udelay(1);
 602         Wr_Byte(iobase, bTmp);
 603         Sdelay(1);
 604         ClkTx(iobase, 0, 0);
 605         Tdelay(2);
 606         for (i = 0; i < 10; i++) {
 607                 ActClk(iobase, 1);
 608                 Tdelay(1);
 609                 ActClk(iobase, 0);
 610                 Tdelay(1);
 611                 ClkTx(iobase, 0, 1);
 612                 Tdelay(1);
 613                 bTmp = ReadReg(iobase, 0x34);
 614                 if (!(bTmp & Rd_Valid))
 615                         break;
 616         }
 617         if (!(bTmp & Rd_Valid)) {
 618                 for (i = 0; i < 8; i++) {
 619                         ActClk(iobase, 1);
 620                         Tdelay(1);
 621                         ActClk(iobase, 0);
 622                         bTmp = ReadReg(iobase, 0x34);
 623                         data_bit = 1 << i;
 624                         if (bTmp & RxBit)
 625                                 data |= data_bit;
 626                         else
 627                                 data &= ~data_bit;
 628                         Tdelay(2);
 629                 }
 630         } else {
 631                 for (i = 0; i < 2; i++) {
 632                         ActClk(iobase, 1);
 633                         Tdelay(1);
 634                         ActClk(iobase, 0);
 635                         Tdelay(2);
 636                 }
 637                 bTmp = ReadReg(iobase, 0x34);
 638         }
 639         for (i = 0; i < 1; i++) {
 640                 ActClk(iobase, 1);
 641                 Tdelay(1);
 642                 ActClk(iobase, 0);
 643                 Tdelay(2);
 644         }
 645         ClkTx(iobase, 0, 0);
 646         Tdelay(1);
 647         for (i = 0; i < 3; i++) {
 648                 ActClk(iobase, 1);
 649                 Tdelay(1);
 650                 ActClk(iobase, 0);
 651                 Tdelay(2);
 652         }
 653         return data;
 654 }
 655
 656 static void Wr_Indx(__u16 iobase, __u8 addr, __u8 index, __u8 data)
 657 {
 658         int i;
 659         __u8 bTmp;
 660
 661         ClkTx(iobase, 0, 0);
 662         udelay(2);
 663         ActClk(iobase, 1);
 664         udelay(1);
 665         bTmp = addr | (index << 1) | 1;
 666         Wr_Byte(iobase, bTmp);
 667         Wr_Byte(iobase, data);
 668         for (i = 0; i < 2; i++) {
 669                 ClkTx(iobase, 0, 0);
 670                 Tdelay(2);
 671                 ActClk(iobase, 1);
 672                 Tdelay(1);
 673         }
 674         ActClk(iobase, 0);
 675 }
 676
 677 static void ResetDongle(__u16 iobase)
 678 {
 679         int i;
 680         ClkTx(iobase, 0, 0);
 681         Tdelay(1);
 682         for (i = 0; i < 30; i++) {
 683                 ActClk(iobase, 1);
 684                 Tdelay(1);
 685                 ActClk(iobase, 0);
 686                 Tdelay(1);
 687         }
 688         ActClk(iobase, 0);
 689 }
 690
 691 static void SetSITmode(__u16 iobase)
 692 {
 693
 694         __u8 bTmp;
 695
 696         bTmp = ReadLPCReg(0x28);
 697         WriteLPCReg(0x28, bTmp | 0x10); //select ITMOFF
 698         bTmp = ReadReg(iobase, 0x35);
 699         WriteReg(iobase, 0x35, bTmp | 0x40);    // Driver ITMOFF
 700         WriteReg(iobase, 0x28, bTmp | 0x80);    // enable All interrupt
 701 }
 702
 703 static void SI_SetMode(__u16 iobase, int mode)
 704 {
 705         //__u32 dTmp;
 706         __u8 bTmp;
 707
 708         WriteLPCReg(0x28, 0x70);        // S/W Reset
 709         SetSITmode(iobase);
 710         ResetDongle(iobase);
 711         udelay(10);
 712         Wr_Indx(iobase, 0x40, 0x0, 0x17);       //RX ,APEN enable,Normal power
 713         Wr_Indx(iobase, 0x40, 0x1, mode);       //Set Mode
 714         Wr_Indx(iobase, 0x40, 0x2, 0xff);       //Set power to FIR VFIR > 1m
 715         bTmp = Rd_Indx(iobase, 0x40, 1);
 716 }
 717
 718 static void InitCard(__u16 iobase)
 719 {
 720         ResetChip(iobase, 5);
 721         WriteReg(iobase, I_ST_CT_0, 0x00);      // open CHIP on
 722         SetSIRBOF(iobase, 0xc0);        // hardware default value
 723         SetSIREOF(iobase, 0xc1);
 724 }
 725
 726 static void CommonInit(__u16 iobase)
 727 {
 728 //  EnTXCRC(iobase,0);
 729         SwapDMA(iobase, OFF);
 730         SetMaxRxPacketSize(iobase, 0x0fff);     //set to max:4095
 731         EnRXFIFOReadyInt(iobase, OFF);
 732         EnRXFIFOHalfLevelInt(iobase, OFF);
 733         EnTXFIFOHalfLevelInt(iobase, OFF);
 734         EnTXFIFOUnderrunEOMInt(iobase, ON);
 735 //  EnTXFIFOReadyInt(iobase,ON);
 736         InvertTX(iobase, OFF);
 737         InvertRX(iobase, OFF);
 738 //  WriteLPCReg(0xF0,0); //(if VT1211 then do this)
 739         if (IsSIROn(iobase)) {
 740                 SIRFilter(iobase, ON);
 741                 SIRRecvAny(iobase, ON);
 742         } else {
 743                 SIRFilter(iobase, OFF);
 744                 SIRRecvAny(iobase, OFF);
 745         }
 746         EnRXSpecInt(iobase, ON);
 747         WriteReg(iobase, I_ST_CT_0, 0x80);
 748         EnableDMA(iobase, ON);
 749 }
 750
 751 static void SetBaudRate(__u16 iobase, __u32 rate)
 752 {
 753         __u8 value = 11, temp;
 754
 755         if (IsSIROn(iobase)) {
 756                 switch (rate) {
 757                 case (__u32) (2400L):
 758                         value = 47;
 759                         break;
 760                 case (__u32) (9600L):
 761                         value = 11;
 762                         break;
 763                 case (__u32) (19200L):
 764                         value = 5;
 765                         break;
 766                 case (__u32) (38400L):
 767                         value = 2;
 768                         break;
 769                 case (__u32) (57600L):
 770                         value = 1;
 771                         break;
 772                 case (__u32) (115200L):
 773                         value = 0;
 774                         break;
 775                 default:
 776                         break;
 777                 };
 778         } else if (IsMIROn(iobase)) {
 779                 value = 0;      // will automatically be fixed in 1.152M
 780         } else if (IsFIROn(iobase)) {
 781                 value = 0;      // will automatically be fixed in 4M
 782         }
 783         temp = (ReadReg(iobase, I_CF_H_1) & 0x03);
 784         temp |= value << 2;
 785         WriteReg(iobase, I_CF_H_1, temp);
 786 }
 787
 788 static void SetPulseWidth(__u16 iobase, __u8 width)
 789 {
 790         __u8 temp, temp1, temp2;
 791
 792         temp = (ReadReg(iobase, I_CF_L_1) & 0x1f);
 793         temp1 = (ReadReg(iobase, I_CF_H_1) & 0xfc);
 794         temp2 = (width & 0x07) << 5;
 795         temp |= temp2;
 796         temp2 = (width & 0x18) >> 3;
 797         temp1 |= temp2;
 798         WriteReg(iobase, I_CF_L_1, temp);
 799         WriteReg(iobase, I_CF_H_1, temp1);
 800 }
 801
 802 static void SetSendPreambleCount(__u16 iobase, __u8 count)
 803 {
 804         __u8 temp;
 805
 806         temp = ReadReg(iobase, I_CF_L_1) & 0xe0;
 807         temp |= count;
 808         WriteReg(iobase, I_CF_L_1, temp);
 809
 810 }
 811
 812 static void SetVFIR(__u16 BaseAddr, __u8 val)
 813 {
 814         __u8 tmp;
 815
 816         tmp = ReadReg(BaseAddr, I_CF_L_0);
 817         WriteReg(BaseAddr, I_CF_L_0, tmp & 0x8f);
 818         WriteRegBit(BaseAddr, I_CF_H_0, 5, val);
 819 }
 820
 821 static void SetFIR(__u16 BaseAddr, __u8 val)
 822 {
 823         __u8 tmp;
 824
 825         WriteRegBit(BaseAddr, I_CF_H_0, 5, 0);
 826         tmp = ReadReg(BaseAddr, I_CF_L_0);
 827         WriteReg(BaseAddr, I_CF_L_0, tmp & 0x8f);
 828         WriteRegBit(BaseAddr, I_CF_L_0, 6, val);
 829 }
 830
 831 static void SetMIR(__u16 BaseAddr, __u8 val)
 832 {
 833         __u8 tmp;
 834
 835         WriteRegBit(BaseAddr, I_CF_H_0, 5, 0);
 836         tmp = ReadReg(BaseAddr, I_CF_L_0);
 837         WriteReg(BaseAddr, I_CF_L_0, tmp & 0x8f);
 838         WriteRegBit(BaseAddr, I_CF_L_0, 5, val);
 839 }
 840
 841 static void SetSIR(__u16 BaseAddr, __u8 val)
 842 {
 843         __u8 tmp;
 844
 845         WriteRegBit(BaseAddr, I_CF_H_0, 5, 0);
 846         tmp = ReadReg(BaseAddr, I_CF_L_0);
 847         WriteReg(BaseAddr, I_CF_L_0, tmp & 0x8f);
 848         WriteRegBit(BaseAddr, I_CF_L_0, 4, val);
 849 }
 850
 851 #endif                          /* via_IRCC_H */