155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/* $NetBSD: tc_dma.c,v 1.5 1998/02/04 07:37:31 thorpej Exp $ */
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/*-
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: tc_dma.c,v 1.5 1998/02/04 07:37:31 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#define _ALPHA_BUS_DMA_PRIVATE
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#include <machine/bus.h>
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#include <dev/tc/tcvar.h>
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int tc_bus_dmamap_load_direct __P((bus_dma_tag_t, bus_dmamap_t, void *,
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bus_size_t, struct proc *, int));
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int tc_bus_dmamap_load_mbuf_direct __P((bus_dma_tag_t, bus_dmamap_t,
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struct mbuf *, int));
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int tc_bus_dmamap_load_uio_direct __P((bus_dma_tag_t, bus_dmamap_t,
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struct uio *, int));
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int tc_bus_dmamap_load_raw_direct __P((bus_dma_tag_t, bus_dmamap_t,
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bus_dma_segment_t *, int, bus_size_t, int));
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struct alpha_bus_dma_tag tc_dmat_direct = {
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NULL, /* _cookie */
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NULL, /* _get_tag */
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_bus_dmamap_create,
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_bus_dmamap_destroy,
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tc_bus_dmamap_load_direct,
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tc_bus_dmamap_load_mbuf_direct,
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tc_bus_dmamap_load_uio_direct,
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tc_bus_dmamap_load_raw_direct,
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_bus_dmamap_unload,
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_bus_dmamap_sync,
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_bus_dmamem_alloc,
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_bus_dmamem_free,
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_bus_dmamem_map,
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_bus_dmamem_unmap,
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_bus_dmamem_mmap,
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};
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void
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tc_dma_init()
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{
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/* XXX XXX BEGIN XXX XXX */
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{ /* XXX */
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extern vm_offset_t alpha_XXX_dmamap_or; /* XXX */
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alpha_XXX_dmamap_or = 0; /* XXX */
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} /* XXX */
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/* XXX XXX END XXX XXX */
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}
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/*
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* Load a TurboChannel direct-mapped DMA map with a linear buffer.
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*/
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int
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tc_bus_dmamap_load_direct(t, map, buf, buflen, p, flags)
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bus_dma_tag_t t;
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bus_dmamap_t map;
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void *buf;
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bus_size_t buflen;
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struct proc *p;
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int flags;
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{
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return (_bus_dmamap_load_direct_common(t, map, buf, buflen, p,
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flags, 0));
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}
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/*
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* Load a TurboChannel direct-mapped DMA map with an mbuf chain.
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*/
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int
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tc_bus_dmamap_load_mbuf_direct(t, map, m, flags)
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bus_dma_tag_t t;
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bus_dmamap_t map;
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struct mbuf *m;
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int flags;
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{
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return (_bus_dmamap_load_mbuf_direct_common(t, map, m,
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flags, 0));
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}
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/*
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* Load a TurboChannel direct-mapped DMA map with a uio.
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*/
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int
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tc_bus_dmamap_load_uio_direct(t, map, uio, flags)
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bus_dma_tag_t t;
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bus_dmamap_t map;
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struct uio *uio;
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int flags;
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{
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return (_bus_dmamap_load_uio_direct_common(t, map, uio,
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flags, 0));
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}
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/*
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* Load a TurboChannel direct-mapped DMA map with raw memory.
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*/
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int
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tc_bus_dmamap_load_raw_direct(t, map, segs, nsegs, size, flags)
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bus_dma_tag_t t;
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bus_dmamap_t map;
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bus_dma_segment_t *segs;
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int nsegs;
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bus_size_t size;
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int flags;
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{
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return (_bus_dmamap_load_raw_direct_common(t, map, segs, nsegs,
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size, flags, 0));
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}
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