Implement bus_dmamem_mmap().
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.249 1997/08/26 18:56:40 fvdl Exp $ */
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/* $NetBSD: machdep.c,v 1.250 1997/09/05 01:44:42 thorpej Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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@ -2437,8 +2437,28 @@ _bus_dmamem_mmap(t, segs, nsegs, off, prot, flags)
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bus_dma_segment_t *segs;
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int nsegs, off, prot, flags;
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{
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int i;
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panic("_bus_dmamem_mmap: not implemented");
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for (i = 0; i < nsegs; i++) {
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#ifdef DIAGNOSTIC
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if (off & PGOFSET)
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panic("_bus_dmamem_mmap: offset unaligned");
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if (segs[i].ds_addr & PGOFSET)
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panic("_bus_dmamem_mmap: segment unaligned");
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if (segs[i].ds_len & PGOFSET)
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panic("_bus_dmamem_mmap: segment size not multiple"
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" of page size");
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#endif
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if (off >= segs[i].ds_len) {
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off -= segs[i].ds_len;
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continue;
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}
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return (i386_btop((caddr_t)segs[i].ds_addr + off));
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}
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/* Page not found. */
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return (-1);
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}
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/**********************************************************************
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