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Annotation of coherent/a/usr/include.b4ps2/sys/dmac.h, revision 1.1.1.1

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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