FreeBSD/Linux Kernel Cross Reference
sys/arch/amiga/dev/atzscreg.h

     /*      $NetBSD: atzscreg.h,v 1.5 2005/12/11 12:16:28 christos Exp $    */
     
     /*
      * Copyright (c) 1982, 1990 The Regents of the University of California.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)dmareg.h
     */
    /*
     * Copyright (c) 1994 Christian E. Hopps
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)dmareg.h
     */
    #ifndef _AMIGA_DEV_ATZSCREG_H_
    #define _AMIGA_DEV_ATZSCREG_H_
    
    /*
     * Hardware layout of the A2091 SDMAC. This also contains the
     * registers for the sbic chip, but in favor of separating DMA and
     * scsi, the scsi-driver doesn't make use of this dependency
     */
    
    #define v_char          volatile char
    #define v_int           volatile int
    #define vu_char         volatile u_char
    #define vu_short        volatile u_short
    #define vu_int          volatile u_int
    
    /* This chip definition only defines the registers also present on the
       A3000 SDMAC. */
    
    struct sdmac {
            short           pad0[0x20];
            vu_short ISTR;          /* Interrupt Status Register RO */
            vu_short CNTR;          /* Control Register RW */
            short           pad1[0x1e];
            vu_int   WTC;           /* Word Transfer Count Register RW */
            vu_int   ACR;           /* Address Count Register RW */
            short           pad2[0x03];
            vu_short DAWR;          /* DACK Width Register WO */
            char            pad3;
            vu_char  SASR;          /* sbic asr */
            char            pad4;
            vu_char  SCMD;          /* sbic data */
            short           pad5[0x26];
            vu_short ST_DMA;        /* Start DMA Transfers RW-Strobe */
            vu_short SP_DMA;        /* Stop DMA Transfers RW-Strobe */
           vu_short CINT;          /* Clear Interrupts RW-Strobe */
           short           pad6;
           vu_short FLUSH;         /* Flush FIFO RW-Strobe */
   };
   
   /*
    * value to go into DAWR
    */
   #define DAWR_ATZSC      3       /* according to A3000T service-manual */
   
   /*
    * bits defined for CNTR
    */
   #define CNTR_TCEN       (1<<7)  /* Terminal Count Enable */
   #define CNTR_PREST      (1<<6)  /* Perp Reset (not implemented :-((( ) */
   #define CNTR_PDMD       (1<<5)  /* Perp Device Mode Select (1=SCSI,0=XT/AT) */
   #define CNTR_INTEN      (1<<4)  /* Interrupt Enable */
   #define CNTR_DDIR       (1<<3)  /* Device Direction. 1==rd host, wr to perp */
   
   /*
    * bits defined for ISTR
    */
   #define ISTR_INTX       (1<<8)  /* XT/AT Interrupt pending */
   #define ISTR_INT_F      (1<<7)  /* Interrupt Follow */
   #define ISTR_INTS       (1<<6)  /* SCSI Peripheral Interrupt */
   #define ISTR_E_INT      (1<<5)  /* End-Of-Process Interrupt */
   #define ISTR_INT_P      (1<<4)  /* Interrupt Pending */
   #define ISTR_UE_INT     (1<<3)  /* Under-Run FIFO Error Interrupt */
   #define ISTR_OE_INT     (1<<2)  /* Over-Run FIFO Error Interrupt */
   #define ISTR_FF_FLG     (1<<1)  /* FIFO-Full Flag */
   #define ISTR_FE_FLG     (1<<0)  /* FIFO-Empty Flag */
   
   #endif /* _AMIGA_DEV_ATZSCREG_H_ */

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