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Annotation of xinu/sys/LSI/dsseek.c, revision 1.1

1.1     ! root        1: /* dsseek.c - dsseek */
        !             2: 
        !             3: #include <conf.h>
        !             4: #include <kernel.h>
        !             5: #include <proc.h>
        !             6: #include <disk.h>
        !             7: 
        !             8: /*------------------------------------------------------------------------
        !             9:  *  dsseek  --  schedule a request to move the disk arm
        !            10:  *------------------------------------------------------------------------
        !            11:  */
        !            12: dsseek(devptr, block)
        !            13:        struct  devsw   *devptr;
        !            14:        DBADDR  block;
        !            15: {
        !            16:        struct  dreq    *drptr;
        !            17:        char    ps;
        !            18: 
        !            19:        disable(ps);
        !            20:        drptr = (struct dreq *) getbuf(dskrbp);
        !            21:        drptr->drdba = block;
        !            22:        drptr->drpid = currpid;
        !            23:        drptr->drbuff = NULL;
        !            24:        drptr->drop = DSEEK;
        !            25: 
        !            26:        /* enqueued with normal policy like other read/write requests */
        !            27: 
        !            28:        dskenq(drptr, devptr->dvioblk);
        !            29:        restore(ps);
        !            30:        return(OK);
        !            31: }

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