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/*

 * rocket_int.h --- internal header file for rocket.c

 *

 * Written by Theodore Ts'o, Copyright 1997.

 *

 * Portions of this file are....

 *

 * Copyright 1994 Comtrol Corporation.    All Rights Reserved.

 *

 * Erroneously clashing license removed. This file is GPL

 * (Kurt Robideau, Comtrol Corp, 20030610)

 * This driver is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2, or (at your option)

 * any later version.

 *

 * This driver is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

/*

 * Begin Comtrol-provided headers, et. al.

 */

/*

        user definitions for Rocket Toolkit

        The following typedefs and defines must be established

        depending on the platform the toolkit is being used

        with.

*/

/************************************************************

The following sets up the world for use with Linux

************************************************************/

#include <asm/io.h>

typedef unsigned char Byte_t;

typedef unsigned int ByteIO_t;

typedef unsigned int Word_t;

typedef unsigned int WordIO_t;

typedef unsigned long DWord_t;

typedef unsigned int DWordIO_t;

#define sOutB(a, b) outb_p(b, a)

#define sOutW(a, b) outw_p(b, a)

#define sOutDW(a, b) outl_p(b, a)

#define sInB(a) (inb_p(a))

#define sInW(a) (inw_p(a))

#define sOutStrW(port, addr, count) outsw(port, addr, count)

#define sInStrW(port, addr, count) insw(port, addr, count)

#define CTL_SIZE 4

#define AIOP_CTL_SIZE 4

#define CHAN_AIOP_SIZE 8

#define MAX_PORTS_PER_AIOP 8

#define MAX_AIOPS_PER_BOARD 4

#define MAX_PORTS_PER_BOARD 32

/* Bus type ID */

#define isISA   0

#define isPCI   1

#define isMC    2

/* Controller ID numbers */

#define CTLID_NULL  -1              /* no controller exists */

#define CTLID_0001  0x0001          /* controller release 1 */

/* AIOP ID numbers, identifies AIOP type implementing channel */

#define AIOPID_NULL -1              /* no AIOP or channel exists */

#define AIOPID_0001 0x0001          /* AIOP release 1 */

#define NULLDEV -1                  /* identifies non-existant device */

#define NULLCTL -1                  /* identifies non-existant controller */

#define NULLCTLPTR (CONTROLLER_T *)0 /* identifies non-existant controller */

#define NULLAIOP -1                 /* identifies non-existant AIOP */

#define NULLCHAN -1                 /* identifies non-existant channel */

/************************************************************************

 Global Register Offsets - Direct Access - Fixed values

************************************************************************/

#define _CMD_REG   0x38   /* Command Register            8    Write */

#define _INT_CHAN  0x39   /* Interrupt Channel Register  8    Read */

#define _INT_MASK  0x3A   /* Interrupt Mask Register     8    Read / Write */

#define _UNUSED    0x3B   /* Unused                      8 */

#define _INDX_ADDR 0x3C   /* Index Register Address      16   Write */

#define _INDX_DATA 0x3E   /* Index Register Data         8/16 Read / Write */

/************************************************************************

 Channel Register Offsets for 1st channel in AIOP - Direct Access

************************************************************************/

#define _TD0       0x00  /* Transmit Data               16   Write */

#define _RD0       0x00  /* Receive Data                16   Read */

#define _CHN_STAT0 0x20  /* Channel Status              8/16 Read / Write */

#define _FIFO_CNT0 0x10  /* Transmit/Receive FIFO Count 16   Read */

#define _INT_ID0   0x30  /* Interrupt Identification    8    Read */

/************************************************************************

 Tx Control Register Offsets - Indexed - External - Fixed

************************************************************************/

#define _TX_ENBLS  0x980    /* Tx Processor Enables Register 8 Read / Write */

#define _TXCMP1    0x988    /* Transmit Compare Value #1     8 Read / Write */

#define _TXCMP2    0x989    /* Transmit Compare Value #2     8 Read / Write */

#define _TXREP1B1  0x98A    /* Tx Replace Value #1 - Byte 1  8 Read / Write */

#define _TXREP1B2  0x98B    /* Tx Replace Value #1 - Byte 2  8 Read / Write */

#define _TXREP2    0x98C    /* Transmit Replace Value #2     8 Read / Write */

/************************************************************************

Memory Controller Register Offsets - Indexed - External - Fixed

************************************************************************/

#define _RX_FIFO    0x000    /* Rx FIFO */

#define _TX_FIFO    0x800    /* Tx FIFO */

#define _RXF_OUTP   0x990    /* Rx FIFO OUT pointer        16 Read / Write */

#define _RXF_INP    0x992    /* Rx FIFO IN pointer         16 Read / Write */

#define _TXF_OUTP   0x994    /* Tx FIFO OUT pointer        8  Read / Write */

#define _TXF_INP    0x995    /* Tx FIFO IN pointer         8  Read / Write */

#define _TXP_CNT    0x996    /* Tx Priority Count          8  Read / Write */

#define _TXP_PNTR   0x997    /* Tx Priority Pointer        8  Read / Write */

#define PRI_PEND    0x80     /* Priority data pending (bit7, Tx pri cnt) */

#define TXFIFO_SIZE 255      /* size of Tx FIFO */

#define RXFIFO_SIZE 1023     /* size of Rx FIFO */

/************************************************************************

Tx Priority Buffer - Indexed - External - Fixed

************************************************************************/

#define _TXP_BUF    0x9C0    /* Tx Priority Buffer  32  Bytes   Read / Write */

#define TXP_SIZE    0x20     /* 32 bytes */

/************************************************************************

Channel Register Offsets - Indexed - Internal - Fixed

************************************************************************/

#define _TX_CTRL    0xFF0    /* Transmit Control               16  Write */

#define _RX_CTRL    0xFF2    /* Receive Control                 8  Write */

#define _BAUD       0xFF4    /* Baud Rate                      16  Write */

#define _CLK_PRE    0xFF6    /* Clock Prescaler                 8  Write */

#if 0

#define CLOCK_PRESC 0x14          /* ?????? new mod 4 (divide by 5) prescale */

#define BRD50             9215

#define BRD75             6143  

#define BRD110            4188

#define BRD134            3438

#define BRD150            3071

#define BRD200            2303

#define BRD300            1535

#define BRD600            767

#define BRD1200           383

#define BRD1800           255

#define BRD2000           229

#define BRD2400           191

#define BRD3600           127

#define BRD4800           95

#define BRD7200           63

#define BRD9600           47

#define BRD14400          31 

#define BRD19200          23

#define BRD38400          11

#define BRD57600          7

#define BRD76800          5

#define BRD115200         3

#define BRD230400         1

#define BRD460800         0

#endif

#if 0

/* Old clock prescale definition and baud rates associated with it */

#define CLOCK_PRESC 0x19          /* mod 9 (divide by 10) prescale */

#define BRD50             4607

#define BRD75             3071

#define BRD110            2094

#define BRD134            1712

#define BRD150            1535

#define BRD200            1151

#define BRD300            767

#define BRD600            383

#define BRD1200           191

#define BRD1800           127

#define BRD2000           114

#define BRD2400           95

#define BRD3600           64

#define BRD4800           47

#define BRD7200           31

#define BRD9600           23

#define BRD14400          15

#define BRD19200          11

#define BRD38400          5

#define BRD57600          3

#define BRD76800          2

#define BRD115200         1

#define BRD230400         0

#endif

#define STMBREAK   0x08        /* BREAK */

#define STMFRAME   0x04        /* framing error */

#define STMRCVROVR 0x02        /* receiver over run error */

#define STMPARITY  0x01        /* parity error */

#define STMERROR   (STMBREAK | STMFRAME | STMPARITY)

#define STMBREAKH   0x800      /* BREAK */

#define STMFRAMEH   0x400      /* framing error */

#define STMRCVROVRH 0x200      /* receiver over run error */

#define STMPARITYH  0x100      /* parity error */

#define STMERRORH   (STMBREAKH | STMFRAMEH | STMPARITYH)

#define CTS_ACT   0x20        /* CTS input asserted */

#define DSR_ACT   0x10        /* DSR input asserted */

#define CD_ACT    0x08        /* CD input asserted */

#define TXFIFOMT  0x04        /* Tx FIFO is empty */

#define TXSHRMT   0x02        /* Tx shift register is empty */

#define RDA       0x01        /* Rx data available */

#define DRAINED (TXFIFOMT | TXSHRMT)  /* indicates Tx is drained */

#define STATMODE  0x8000      /* status mode enable bit */

#define RXFOVERFL 0x2000      /* receive FIFO overflow */

#define RX2MATCH  0x1000      /* receive compare byte 2 match */

#define RX1MATCH  0x0800      /* receive compare byte 1 match */

#define RXBREAK   0x0400      /* received BREAK */

#define RXFRAME   0x0200      /* received framing error */

#define RXPARITY  0x0100      /* received parity error */

#define STATERROR (RXBREAK | RXFRAME | RXPARITY)

#define CTSFC_EN  0x80        /* CTS flow control enable bit */

#define RTSTOG_EN 0x40        /* RTS toggle enable bit */

#define TXINT_EN  0x10        /* transmit interrupt enable */

#define STOP2     0x08        /* enable 2 stop bits (0 = 1 stop) */

#define PARITY_EN 0x04        /* enable parity (0 = no parity) */

#define EVEN_PAR  0x02        /* even parity (0 = odd parity) */

#define DATA8BIT  0x01        /* 8 bit data (0 = 7 bit data) */

#define SETBREAK  0x10        /* send break condition (must clear) */

#define LOCALLOOP 0x08        /* local loopback set for test */

#define SET_DTR   0x04        /* assert DTR */

#define SET_RTS   0x02        /* assert RTS */

#define TX_ENABLE 0x01        /* enable transmitter */

#define RTSFC_EN  0x40        /* RTS flow control enable */

#define RXPROC_EN 0x20        /* receive processor enable */

#define TRIG_NO   0x00        /* Rx FIFO trigger level 0 (no trigger) */

#define TRIG_1    0x08        /* trigger level 1 char */

#define TRIG_1_2  0x10        /* trigger level 1/2 */

#define TRIG_7_8  0x18        /* trigger level 7/8 */

#define TRIG_MASK 0x18        /* trigger level mask */

#define SRCINT_EN 0x04        /* special Rx condition interrupt enable */

#define RXINT_EN  0x02        /* Rx interrupt enable */

#define MCINT_EN  0x01        /* modem change interrupt enable */

#define RXF_TRIG  0x20        /* Rx FIFO trigger level interrupt */

#define TXFIFO_MT 0x10        /* Tx FIFO empty interrupt */

#define SRC_INT   0x08        /* special receive condition interrupt */

#define DELTA_CD  0x04        /* CD change interrupt */

#define DELTA_CTS 0x02        /* CTS change interrupt */

#define DELTA_DSR 0x01        /* DSR change interrupt */

#define REP1W2_EN 0x10        /* replace byte 1 with 2 bytes enable */

#define IGN2_EN   0x08        /* ignore byte 2 enable */

#define IGN1_EN   0x04        /* ignore byte 1 enable */

#define COMP2_EN  0x02        /* compare byte 2 enable */

#define COMP1_EN  0x01        /* compare byte 1 enable */

#define RESET_ALL 0x80        /* reset AIOP (all channels) */

#define TXOVERIDE 0x40        /* Transmit software off override */

#define RESETUART 0x20        /* reset channel's UART */

#define RESTXFCNT 0x10        /* reset channel's Tx FIFO count register */

#define RESRXFCNT 0x08        /* reset channel's Rx FIFO count register */

#define INTSTAT0  0x01        /* AIOP 0 interrupt status */

#define INTSTAT1  0x02        /* AIOP 1 interrupt status */

#define INTSTAT2  0x04        /* AIOP 2 interrupt status */

#define INTSTAT3  0x08        /* AIOP 3 interrupt status */

#define INTR_EN   0x08        /* allow interrupts to host */

#define INT_STROB 0x04        /* strobe and clear interrupt line (EOI) */

/**************************************************************************

 MUDBAC remapped for PCI

**************************************************************************/

#define _CFG_INT_PCI  0x40

#define _PCI_INT_FUNC 0x3A

#define PCI_STROB 0x2000        /* bit 13 of int aiop register */

#define INTR_EN_PCI   0x0010        /* allow interrupts to host */

#define CHAN3_EN  0x08        /* enable AIOP 3 */

#define CHAN2_EN  0x04        /* enable AIOP 2 */

#define CHAN1_EN  0x02        /* enable AIOP 1 */

#define CHAN0_EN  0x01        /* enable AIOP 0 */

#define FREQ_DIS  0x00

#define FREQ_274HZ 0x60

#define FREQ_137HZ 0x50

#define FREQ_69HZ  0x40

#define FREQ_34HZ  0x30

#define FREQ_17HZ  0x20

#define FREQ_9HZ   0x10

#define PERIODIC_ONLY 0x80    /* only PERIODIC interrupt */

#define CHANINT_EN 0x0100           /* flags to enable/disable channel ints */

#define RDATASIZE 72

#define RREGDATASIZE 52

/* Controller level information structure */

typedef struct

{

        int             CtlID;

        int             CtlNum;

        int             BusType;

        WordIO_t        PCIIO;

        ByteIO_t        MBaseIO;

        ByteIO_t        MReg1IO;

        ByteIO_t        MReg2IO;

        ByteIO_t        MReg3IO;

        Byte_t          MReg2;

        Byte_t          MReg3;

        int             NumAiop;

        WordIO_t        AiopIO[AIOP_CTL_SIZE];

        ByteIO_t        AiopIntChanIO[AIOP_CTL_SIZE];

        int             AiopID[AIOP_CTL_SIZE];

        int             AiopNumChan[AIOP_CTL_SIZE];

} CONTROLLER_T;

typedef CONTROLLER_T CONTROLLER_t;

/* Channel level information structure */

typedef struct

{

        CONTROLLER_T    *CtlP;

        int             AiopNum;

        int             ChanID;

        int             ChanNum;

        ByteIO_t        Cmd;

        ByteIO_t        IntChan;

        ByteIO_t        IntMask;

        DWordIO_t       IndexAddr;

        WordIO_t        IndexData;

        WordIO_t        TxRxData;

        WordIO_t        ChanStat;

        WordIO_t        TxRxCount;

        ByteIO_t        IntID;

        Word_t          TxFIFO;

        Word_t          TxFIFOPtrs;

        Word_t          RxFIFO;

        Word_t          RxFIFOPtrs;

        Word_t          TxPrioCnt;

        Word_t          TxPrioPtr;

        Word_t          TxPrioBuf;

        Byte_t          R[RREGDATASIZE];

        Byte_t          BaudDiv[4];

        Byte_t          TxControl[4];

        Byte_t          RxControl[4];

        Byte_t          TxEnables[4];

        Byte_t          TxCompare[4];

        Byte_t          TxReplace1[4];

        Byte_t          TxReplace2[4];

} CHANNEL_T;

typedef CHANNEL_T CHANNEL_t;

typedef CHANNEL_T * CHANPTR_T;

/***************************************************************************

Function: sClrBreak

Purpose:  Stop sending a transmit BREAK signal

Call:     sClrBreak(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sClrBreak(ChP) \

{ \

   (ChP)->TxControl[3] &= ~SETBREAK; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sClrDTR

Purpose:  Clr the DTR output

Call:     sClrDTR(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sClrDTR(ChP) \

{ \

   (ChP)->TxControl[3] &= ~SET_DTR; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sClrRTS

Purpose:  Clr the RTS output

Call:     sClrRTS(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sClrRTS(ChP) \

{ \

   (ChP)->TxControl[3] &= ~SET_RTS; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sClrTxXOFF

Purpose:  Clear any existing transmit software flow control off condition

Call:     sClrTxXOFF(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sClrTxXOFF(ChP) \

{ \

   sOutB((ChP)->Cmd,TXOVERIDE | (Byte_t)(ChP)->ChanNum); \

   sOutB((ChP)->Cmd,(Byte_t)(ChP)->ChanNum); \

}

/***************************************************************************

Function: sCtlNumToCtlPtr

Purpose:  Convert a controller number to controller structure pointer

Call:     sCtlNumToCtlPtr(CtlNum)

          int CtlNum; Controller number

Return:   CONTROLLER_T *: Ptr to controller structure

*/

#define sCtlNumToCtlPtr(CTLNUM) &sController[CTLNUM]

/***************************************************************************

Function: sControllerEOI

Purpose:  Strobe the MUDBAC's End Of Interrupt bit.

Call:     sControllerEOI(CtlP)

          CONTROLLER_T *CtlP; Ptr to controller structure

*/

#define sControllerEOI(CTLP) sOutB((CTLP)->MReg2IO,(CTLP)->MReg2 | INT_STROB)

/***************************************************************************

Function: sPCIControllerEOI

Purpose:  Strobe the PCI End Of Interrupt bit.

Call:     sPCIControllerEOI(CtlP)

          CONTROLLER_T *CtlP; Ptr to controller structure

*/

#define sPCIControllerEOI(CTLP) sOutW((CTLP)->PCIIO, PCI_STROB)

/***************************************************************************

Function: sDisAiop

Purpose:  Disable I/O access to an AIOP

Call:     sDisAiop(CltP)

          CONTROLLER_T *CtlP; Ptr to controller structure

          int AiopNum; Number of AIOP on controller

*/

#define sDisAiop(CTLP,AIOPNUM) \

{ \

   (CTLP)->MReg3 &= sBitMapClrTbl[AIOPNUM]; \

   sOutB((CTLP)->MReg3IO,(CTLP)->MReg3); \

}

/***************************************************************************

Function: sDisCTSFlowCtl

Purpose:  Disable output flow control using CTS

Call:     sDisCTSFlowCtl(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sDisCTSFlowCtl(ChP) \

{ \

   (ChP)->TxControl[2] &= ~CTSFC_EN; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sDisIXANY

Purpose:  Disable IXANY Software Flow Control

Call:     sDisIXANY(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sDisIXANY(ChP) \

{ \

   (ChP)->R[0x0e] = 0x86; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->R[0x0c]); \

}

/***************************************************************************

Function: DisParity

Purpose:  Disable parity

Call:     sDisParity(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Comments: Function sSetParity() can be used in place of functions sEnParity(),

          sDisParity(), sSetOddParity(), and sSetEvenParity().

*/

#define sDisParity(ChP) \

{ \

   (ChP)->TxControl[2] &= ~PARITY_EN; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sDisRxFIFO

Purpose:  Disable Rx FIFO

Call:     sDisRxFIFO(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sDisRxFIFO(ChP) \

{ \

   (ChP)->R[0x32] = 0x0a; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->R[0x30]); \

}

/***************************************************************************

Function: sDisRxStatusMode

Purpose:  Disable the Rx status mode

Call:     sDisRxStatusMode(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Comments: This takes the channel out of the receive status mode.  All

          subsequent reads of receive data using sReadRxWord() will return

          two data bytes.

*/

#define sDisRxStatusMode(ChP) sOutW((ChP)->ChanStat,0)

/***************************************************************************

Function: sDisTransmit

Purpose:  Disable transmit

Call:     sDisTransmit(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

          This disables movement of Tx data from the Tx FIFO into the 1 byte

          Tx buffer.  Therefore there could be up to a 2 byte latency

          between the time sDisTransmit() is called and the transmit buffer

          and transmit shift register going completely empty.

*/

#define sDisTransmit(ChP) \

{ \

   (ChP)->TxControl[3] &= ~TX_ENABLE; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sDisTxSoftFlowCtl

Purpose:  Disable Tx Software Flow Control

Call:     sDisTxSoftFlowCtl(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sDisTxSoftFlowCtl(ChP) \

{ \

   (ChP)->R[0x06] = 0x8a; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->R[0x04]); \

}

/***************************************************************************

Function: sEnAiop

Purpose:  Enable I/O access to an AIOP

Call:     sEnAiop(CltP)

          CONTROLLER_T *CtlP; Ptr to controller structure

          int AiopNum; Number of AIOP on controller

*/

#define sEnAiop(CTLP,AIOPNUM) \

{ \

   (CTLP)->MReg3 |= sBitMapSetTbl[AIOPNUM]; \

   sOutB((CTLP)->MReg3IO,(CTLP)->MReg3); \

}

/***************************************************************************

Function: sEnCTSFlowCtl

Purpose:  Enable output flow control using CTS

Call:     sEnCTSFlowCtl(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sEnCTSFlowCtl(ChP) \

{ \

   (ChP)->TxControl[2] |= CTSFC_EN; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sEnIXANY

Purpose:  Enable IXANY Software Flow Control

Call:     sEnIXANY(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sEnIXANY(ChP) \

{ \

   (ChP)->R[0x0e] = 0x21; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->R[0x0c]); \

}

/***************************************************************************

Function: EnParity

Purpose:  Enable parity

Call:     sEnParity(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Comments: Function sSetParity() can be used in place of functions sEnParity(),

          sDisParity(), sSetOddParity(), and sSetEvenParity().

Warnings: Before enabling parity odd or even parity should be chosen using

          functions sSetOddParity() or sSetEvenParity().

*/

#define sEnParity(ChP) \

{ \

   (ChP)->TxControl[2] |= PARITY_EN; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sEnRxFIFO

Purpose:  Enable Rx FIFO

Call:     sEnRxFIFO(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sEnRxFIFO(ChP) \

{ \

   (ChP)->R[0x32] = 0x08; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->R[0x30]); \

}

/***************************************************************************

Function: sEnRxProcessor

Purpose:  Enable the receive processor

Call:     sEnRxProcessor(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Comments: This function is used to start the receive processor.  When

          the channel is in the reset state the receive processor is not

          running.  This is done to prevent the receive processor from

          executing invalid microcode instructions prior to the

          downloading of the microcode.

Warnings: This function must be called after valid microcode has been

          downloaded to the AIOP, and it must not be called before the

          microcode has been downloaded.

*/

#define sEnRxProcessor(ChP) \

{ \

   (ChP)->RxControl[2] |= RXPROC_EN; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->RxControl[0]); \

}

/***************************************************************************

Function: sEnRxStatusMode

Purpose:  Enable the Rx status mode

Call:     sEnRxStatusMode(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Comments: This places the channel in the receive status mode.  All subsequent

          reads of receive data using sReadRxWord() will return a data byte

          in the low word and a status byte in the high word.

*/

#define sEnRxStatusMode(ChP) sOutW((ChP)->ChanStat,STATMODE)

/***************************************************************************

Function: sEnTransmit

Purpose:  Enable transmit

Call:     sEnTransmit(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sEnTransmit(ChP) \

{ \

   (ChP)->TxControl[3] |= TX_ENABLE; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->TxControl[0]); \

}

/***************************************************************************

Function: sEnTxSoftFlowCtl

Purpose:  Enable Tx Software Flow Control

Call:     sEnTxSoftFlowCtl(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

*/

#define sEnTxSoftFlowCtl(ChP) \

{ \

   (ChP)->R[0x06] = 0xc5; \

   sOutDW((ChP)->IndexAddr,*(DWord_t *)&(ChP)->R[0x04]); \

}

/***************************************************************************

Function: sGetAiopIntStatus

Purpose:  Get the AIOP interrupt status

Call:     sGetAiopIntStatus(CtlP,AiopNum)

          CONTROLLER_T *CtlP; Ptr to controller structure

          int AiopNum; AIOP number

Return:   Byte_t: The AIOP interrupt status.  Bits 0 through 7

                         represent channels 0 through 7 respectively.  If a

                         bit is set that channel is interrupting.

*/

#define sGetAiopIntStatus(CTLP,AIOPNUM) sInB((CTLP)->AiopIntChanIO[AIOPNUM])

/***************************************************************************

Function: sGetAiopNumChan

Purpose:  Get the number of channels supported by an AIOP

Call:     sGetAiopNumChan(CtlP,AiopNum)

          CONTROLLER_T *CtlP; Ptr to controller structure

          int AiopNum; AIOP number

Return:   int: The number of channels supported by the AIOP

*/

#define sGetAiopNumChan(CTLP,AIOPNUM) (CTLP)->AiopNumChan[AIOPNUM]

/***************************************************************************

Function: sGetChanIntID

Purpose:  Get a channel's interrupt identification byte

Call:     sGetChanIntID(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Return:   Byte_t: The channel interrupt ID.  Can be any

             combination of the following flags:

                RXF_TRIG:     Rx FIFO trigger level interrupt

                TXFIFO_MT:    Tx FIFO empty interrupt

                SRC_INT:      Special receive condition interrupt

                DELTA_CD:     CD change interrupt

                DELTA_CTS:    CTS change interrupt

                DELTA_DSR:    DSR change interrupt

*/

#define sGetChanIntID(ChP) (sInB((ChP)->IntID) & (RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR))

/***************************************************************************

Function: sGetChanNum

Purpose:  Get the number of a channel within an AIOP

Call:     sGetChanNum(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Return:   int: Channel number within AIOP, or NULLCHAN if channel does

               not exist.

*/

#define sGetChanNum(ChP) (ChP)->ChanNum

/***************************************************************************

Function: sGetChanStatus

Purpose:  Get the channel status

Call:     sGetChanStatus(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Return:   Word_t: The channel status.  Can be any combination of

             the following flags:

                LOW BYTE FLAGS

                CTS_ACT:      CTS input asserted

                DSR_ACT:      DSR input asserted

                CD_ACT:       CD input asserted

                TXFIFOMT:     Tx FIFO is empty

                TXSHRMT:      Tx shift register is empty

                RDA:          Rx data available

                HIGH BYTE FLAGS

                STATMODE:     status mode enable bit

                RXFOVERFL:    receive FIFO overflow

                RX2MATCH:     receive compare byte 2 match

                RX1MATCH:     receive compare byte 1 match

                RXBREAK:      received BREAK

                RXFRAME:      received framing error

                RXPARITY:     received parity error

Warnings: This function will clear the high byte flags in the Channel

          Status Register.

*/

#define sGetChanStatus(ChP) sInW((ChP)->ChanStat)

/***************************************************************************

Function: sGetChanStatusLo

Purpose:  Get the low byte only of the channel status

Call:     sGetChanStatusLo(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Return:   Byte_t: The channel status low byte.  Can be any combination

             of the following flags:

                CTS_ACT:      CTS input asserted

                DSR_ACT:      DSR input asserted

                CD_ACT:       CD input asserted

                TXFIFOMT:     Tx FIFO is empty

                TXSHRMT:      Tx shift register is empty

                RDA:          Rx data available

*/

#define sGetChanStatusLo(ChP) sInB((ByteIO_t)(ChP)->ChanStat)

/***************************************************************************

Function: sGetControllerIntStatus

Purpose:  Get the controller interrupt status

Call:     sGetControllerIntStatus(CtlP)

          CONTROLLER_T *CtlP; Ptr to controller structure

Return:   Byte_t: The controller interrupt status in the lower 4

                         bits.  Bits 0 through 3 represent AIOP's 0

                         through 3 respectively.  If a bit is set that

                         AIOP is interrupting.  Bits 4 through 7 will

                         always be cleared.

*/

#define sGetControllerIntStatus(CTLP) (sInB((CTLP)->MReg1IO) & 0x0f)

/***************************************************************************

Function: sPCIGetControllerIntStatus

Purpose:  Get the controller interrupt status

Call:     sPCIGetControllerIntStatus(CtlP)

          CONTROLLER_T *CtlP; Ptr to controller structure

Return:   unsigned char: The controller interrupt status in the lower 4

                         bits and bit 4.  Bits 0 through 3 represent AIOP's 0

                         through 3 respectively. Bit 4 is set if the int

                         was generated from periodic. If a bit is set the

                         AIOP is interrupting.

*/

#define sPCIGetControllerIntStatus(CTLP) ((sInW((CTLP)->PCIIO) >> 8) & 0x1f)

/***************************************************************************

Function: sGetRxCnt

Purpose:  Get the number of data bytes in the Rx FIFO

Call:     sGetRxCnt(ChP)

          CHANNEL_T *ChP; Ptr to channel structure

Return:   int: The number of data bytes in the Rx FIFO.

Comments: Byte read of count register is required to obtain Rx count.

*/

#define sGetRxCnt(ChP) sInW((ChP)->TxRxCount)