source: rtems/cpukit/score/cpu/m68k/include/rtems/m68k/qsm.h @ 2afb22b

/**
 * @file
 *
 * @brief Motorola M68K Queued Serial Module
 *
 * The QSM contains two serial interfaces: (a) the queued serial
 * peripheral interface (QSPI) and the serial communication interface
 * (SCI). The QSPI provides peripheral expansion and/or interprocessor
 * communication through a full-duplex, synchronous, three-wire bus. A
 * self contained RAM queue permits serial data transfers without CPU
 * intervention and automatic continuous sampling. The SCI provides a
 * standard non-return to zero mark/space format with wakeup functions
 * to allow the CPU to run uninterrupted until woken
 *
 * For more information, refer to Motorola's "Modular Microcontroller
 * Family Queued Serial Module Reference Manual" (Motorola document
 * QSMRM/AD).
 */

/*
 * This file was created by John S. Gwynne to support Motorola's 68332 MCU.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the following conditions are met:
 * 1. Redistribution of source code and documentation must retain
 *    the above authorship, this list of conditions and the
 *    following disclaimer.
 * 2. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * This software is provided "AS IS" without warranty of any kind,
 * either expressed or implied, including, but not limited to, the
 * implied warranties of merchantability, title and fitness for a
 * particular purpose.
 *
 *------------------------------------------------------------------
 */

#ifndef _RTEMS_M68K_QSM_H
#define _RTEMS_M68K_QSM_H

/* SAM-- shift and mask */
#undef  SAM
#define SAM(a,b,c) ((a << b) & c)


/* QSM_CRB (QSM Control Register Block) base address of the QSM
   control registers */
#if SIM_MM == 0
#define QSM_CRB 0x7ffc00
#else
#undef SIM_MM
#define SIM_MM 1
#define QSM_CRB 0xfffc00
#endif


#define QSMCR (volatile unsigned short int * const)(0x00 + QSM_CRB)
                                /* QSM Configuration Register */
#define    STOP 0x8000          /*    Stop Enable */
#define    FRZ  0x6000          /*    Freeze Control */
#define    SUPV 0x0080          /*    Supervisor/Unrestricted */
#define    IARB 0x000f          /*    Inerrupt Arbitration */


#define QTEST (volatile unsigned short int * const)(0x02 + QSM_CRB)
                                /* QSM Test Register */
/* Used only for factor testing */


#define QILR (volatile unsigned char * const)(0x04 + QSM_CRB)
                                /* QSM Interrupt Level Register */
#define    ILQSPI 0x38          /*    Interrupt Level for QSPI */
#define    ILSCI  0x07          /*    Interrupt Level for SCI */


#define QIVR (volatile unsigned char * const)(0x05 + QSM_CRB)
                                /* QSM Interrupt Vector Register */
#define    INTV   0xff          /*    Interrupt Vector Number */


#define SCCR0 (volatile unsigned short int * const)(0x08 + QSM_CRB)
                                /* SCI Control Register 0 */
#define    SCBR   0x1fff        /*    SCI Baud Rate */


#define SCCR1 (volatile unsigned short int * const)(0x0a + QSM_CRB)
                                /* SCI Control Register 1 */
#define    LOOPS  0x4000        /*    Loop Mode */
#define    WOMS   0x2000        /*    Wired-OR Mode for SCI Pins */
#define    ILT    0x1000        /*    Idle-Line Detect Type */
#define    PT     0x0800        /*    Parity Type */
#define    PE     0x0400        /*    Parity Enable */
#define    M      0x0200        /*    Mode Select */
#define    WAKE   0x0100        /*    Wakeup by Address Mark */
#define    TIE    0x0080        /*    Transmit Complete Interrupt Enable */
#define    TCIE   0x0040        /*    Transmit Complete Interrupt Enable */
#define    RIE    0x0020        /*    Receiver Interrupt Enable */
#define    ILIE   0x0010        /*    Idle-Line Interrupt Enable */
#define    TE     0x0008        /*    Transmitter Enable */
#define    RE     0x0004        /*    Receiver Enable */
#define    RWU    0x0002        /*    Receiver Wakeup */
#define    SBK    0x0001        /*    Send Break */


#define SCSR (volatile unsigned short int * const)(0x0c + QSM_CRB)
                                /* SCI Status Register */
#define    TDRE   0x0100        /*    Transmit Data Register Empty */
#define    TC     0x0080        /*    Transmit Complete */
#define    RDRF   0x0040        /*    Receive Data Register Full */
#define    RAF    0x0020        /*    Receiver Active */
#define    IDLE   0x0010        /*    Idle-Line Detected */
#define    OR     0x0008        /*    Overrun Error */
#define    NF     0x0004        /*    Noise Error Flag */
#define    FE     0x0002        /*    Framing Error */
#define    PF     0x0001        /*    Parity Error */


#define SCDR (volatile unsigned short int * const)(0x0e + QSM_CRB)
                                /* SCI Data Register */


#define PORTQS (volatile unsigned char * const)(0x15 + QSM_CRB)
                                /* Port QS Data Register */

#define PQSPAR (volatile unsigned char * const)(0x16 + QSM_CRB)
                                /* PORT QS Pin Assignment Rgister */
/* Any bit cleared (zero) defines the corresponding pin to be an I/O
   pin. Any bit set defines the corresponding pin to be a QSPI
   signal. */
/* note: PQS2 is a digital I/O pin unless the SPI is enabled in which
   case it becomes the SPI serial clock SCK. */
/* note: PQS7 is a digital I/O pin unless the SCI transmitter is
   enabled in which case it becomes the SCI serial output TxD. */
#define QSMFun 0x0
#define QSMDis 0x1
/*
 * PQSPAR Field     | QSM Function | Discrete I/O pin
 *------------------+--------------+------------------   */
#define PQSPA0   0  /*   MISO      |      PQS0           */
#define PQSPA1   1  /*   MOSI      |      PQS1           */
#define PQSPA2   2  /*   SCK       |      PQS2 (see note)*/
#define PQSPA3   3  /*   PCSO/!SS  |      PQS3           */
#define PQSPA4   4  /*   PCS1      |      PQS4           */
#define PQSPA5   5  /*   PCS2      |      PQS5           */
#define PQSPA6   6  /*   PCS3      |      PQS6           */
#define PQSPA7   7  /*   TxD       |      PQS7 (see note)*/


#define DDRQS  (volatile unsigned char * const)(0x17 + QSM_CRB)
                                /* PORT QS Data Direction Register */
/* Clearing a bit makes the corresponding pin an input; setting a bit
   makes the pin an output. */


#define SPCR0 (volatile unsigned short int * const)(0x18 + QSM_CRB)
                                /* QSPI Control Register 0 */
#define    MSTR   0x8000        /*    Master/Slave Mode Select */
#define    WOMQ   0x4000        /*    Wired-OR Mode for QSPI Pins */
#define    BITS   0x3c00        /*    Bits Per Transfer */
#define    CPOL   0x0200        /*    Clock Polarity */
#define    CPHA   0x0100        /*    Clock Phase */
#define    SPBR   0x00ff        /*    Serial Clock Baud Rate */


#define SPCR1 (volatile unsigned short int * const)(0x1a + QSM_CRB)
                                /* QSPI Control Register 1 */
#define    SPE    0x8000        /*    QSPI Enable */
#define    DSCKL  0x7f00        /*    Delay before SCK */
#define    DTL    0x00ff        /*    Length of Delay after Transfer */


#define SPCR2 (volatile unsigned short int * const)(0x1c + QSM_CRB)
                                /* QSPI Control Register 2 */
#define    SPIFIE 0x8000        /*    SPI Finished Interrupt Enable */
#define    WREN   0x4000        /*    Wrap Enable */
#define    WRTO   0x2000        /*    Wrap To */
#define    ENDQP  0x0f00        /*    Ending Queue Pointer */
#define    NEWQP  0x000f        /*    New Queue Pointer Value */


#define SPCR3 (volatile unsigned char * const)(0x1e + QSM_CRB)
                                /* QSPI Control Register 3 */
#define    LOOPQ  0x0400        /*    QSPI Loop Mode */
#define    HMIE   0x0200        /*    HALTA and MODF Interrupt Enable */
#define    HALT   0x0100        /*    Halt */


#define SPSR (volatile unsigned char * const)(0x1f + QSM_CRB)
                                /* QSPI Status Register */
#define    SPIF   0x0080        /*    QSPI Finished Flag */
#define    MODF   0x0040        /*    Mode Fault Flag */
#define    HALTA  0x0020        /*    Halt Acknowlwdge Flag */
#define    CPTQP  x0000f        /*    Completed Queue Pointer */

#define QSPIRR (volatile unsigned char * const)(0x100 + QSM_CRB)
                                /* QSPI Receive Data RAM */
#define QSPITR (volatile unsigned char * const)(0x120 + QSM_CRB)
                                /* QSPI Transmit Data RAM */
#define QSPIcR (volatile unsigned char * const)(0x140 + QSM_CRB)
                                /* QSPI Command RAM */

#endif /* _RTEMS_M68K_QSM_H */