FreeBSD/Linux Kernel Cross Reference
sys/dev/esp/am53c974reg.h

     /*      $NetBSD: pcscpreg.h,v 1.2 2008/04/28 20:23:55 martin Exp $      */
     
     /*-
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Izumi Tsutsui.
      *
     * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
     */
    
    /* $FreeBSD$ */
    
    #ifndef _AM53C974_H_
    #define _AM53C974_H_
    
    /*
     * Am53c974 DMA engine registers
     */
    
    #define DMA_CMD         0x40            /* Command */
    #define  DMACMD_RSVD    0xFFFFFF28      /* reserved */
    #define  DMACMD_DIR     0x00000080      /* Transfer Direction (read:1) */
    #define  DMACMD_INTE    0x00000040      /* DMA Interrupt Enable */
    #define  DMACMD_MDL     0x00000010      /* Map to Memory Description List */
    #define  DMACMD_DIAG    0x00000004      /* Diagnostic */
    #define  DMACMD_CMD     0x00000003      /* Command Code Bit */
    #define   DMACMD_IDLE   0x00000000      /*  Idle */
    #define   DMACMD_BLAST  0x00000001      /*  Blast */
    #define   DMACMD_ABORT  0x00000002      /*  Abort */
    #define   DMACMD_START  0x00000003      /*  Start */
    
    #define DMA_STC         0x44            /* Start Transfer Count */
    #define DMA_SPA         0x48            /* Start Physical Address */
    #define DMA_WBC         0x4C            /* Working Byte Counter */
    #define DMA_WAC         0x50            /* Working Address Counter */
    
    #define DMA_STAT        0x54            /* Status Register */
    #define  DMASTAT_RSVD   0xFFFFFF80      /* reserved */
    #define  DMASTAT_PABT   0x00000040      /* PCI master/target Abort */
    #define  DMASTAT_BCMP   0x00000020      /* BLAST Complete */
    #define  DMASTAT_SINT   0x00000010      /* SCSI Interrupt */
    #define  DMASTAT_DONE   0x00000008      /* DMA Transfer Terminated */
    #define  DMASTAT_ABT    0x00000004      /* DMA Transfer Aborted */
    #define  DMASTAT_ERR    0x00000002      /* DMA Transfer Error */
    #define  DMASTAT_PWDN   0x00000001      /* Power Down Indicator */
    
    #define DMA_SMDLA       0x58    /* Starting Memory Descpritor List Address */
    #define DMA_WMAC        0x5C    /* Working MDL Counter */
    #define DMA_SBAC        0x70    /* SCSI Bus and Control */
    
    #endif /* _AM53C974_H_ */

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