69 lines
2.8 KiB
C
69 lines
2.8 KiB
C
/* $NetBSD: hpcdma.h,v 1.3 2001/11/18 05:14:38 thorpej Exp $ */
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/*
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* Copyright (c) 2001 Wayne Knowles
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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 Wayne Knowles
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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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#ifndef _SGIMIPS_HPC_DMA_H
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#define _SGIMIPS_HPC_DMA_H
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#include <machine/bus.h>
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struct hpc_dma_softc {
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bus_space_tag_t sc_bst;
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bus_space_handle_t sc_bsh;
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bus_dma_tag_t sc_dmat;
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u_int32_t sc_flags;
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#define HPCDMA_READ 0x20 /* direction of transfer */
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#define HPCDMA_LOADED 0x40 /* bus_dmamap loaded */
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#define HPCDMA_ACTIVE 0x80 /* DMA engine is busy */
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u_int32_t sc_dmacmd;
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int sc_ndesc;
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bus_dmamap_t sc_dmamap;
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struct hpc_dma_desc *sc_desc_kva; /* Virtual address */
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struct hpc_dma_desc *sc_desc_pa; /* Physical address */
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ssize_t sc_dlen; /* number of bytes transfered */
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};
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void hpcdma_init(struct hpc_attach_args *, struct hpc_dma_softc *, int);
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void hpcdma_sglist_create(struct hpc_dma_softc *, bus_dmamap_t);
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void hpcdma_cntl(struct hpc_dma_softc *, u_int32_t);
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void hpcdma_reset(struct hpc_dma_softc *);
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void hpcdma_flush(struct hpc_dma_softc *);
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#endif /* _SGIMIPS_HPC_DMA_H */
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