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Annotation of coherent/a/usr/include.b4ps2/sys/dmac.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT Driver Kit Version 2.0.0
        !             3:  *     Copyright (c) 1982, 1992 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: #ifndef        DMAC_H
        !             7: #define        DMAC_H
        !             8: 
        !             9: #define        DMA     0x00                    /* Primary 8237 base port */
        !            10: #define        SDMA    0xC0                    /* Secondary 8237 base port */
        !            11: #define        DMAPAGE 0x80                    /* DMA page registers */
        !            12: #define        CLEARFL 0x0C                    /* Clear F/L offset */
        !            13: #define        SETMASK 0x0A                    /* Set DMA mask offset */
        !            14: #define        SETMODE 0x0B                    /* Set DMA mode offset */
        !            15: #define        RDMEM   0x48                    /* Mode, read memory */
        !            16: #define        WRMEM   0x44                    /* Mode, write memory */
        !            17: #define        MASKOFF 0x00                    /* Mask bit off */
        !            18: #define        MASKON  0x04                    /* Mask bit on */
        !            19: 
        !            20: #ifdef _I386
        !            21: #define DMASEG_SIZE    NBPC            /* Size of a DMA segment.  */
        !            22: #include <sys/param.h>
        !            23: /*
        !            24:  * Identify the dma segment of a physical address.
        !            25:  */
        !            26: #define        dmaseg(p)       ((p) & ~(NBPC-1))
        !            27: #else
        !            28: #define dmaseg(p)      ((p)&0xF0000L)
        !            29: #endif
        !            30:                                
        !            31: #endif

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