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/* $OpenBSD: hpcdma.h,v 1.1 2012/03/28 20:44:23 miod Exp $ */
/* $NetBSD: hpcdma.h,v 1.11 2011/07/01 18:53:46 dyoung Exp $ */
/*
* Copyright (c) 2001 Wayne Knowles
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Wayne Knowles
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
struct hpc_dma_softc {
bus_space_tag_t sc_bst;
bus_space_handle_t sc_bsh;
bus_dma_tag_t sc_dmat;
uint32_t sc_flags;
#define HPCDMA_READ 0x20 /* direction of transfer */
#define HPCDMA_LOADED 0x40 /* bus_dmamap loaded */
#define HPCDMA_ACTIVE 0x80 /* DMA engine is busy */
uint32_t sc_dmacmd;
int sc_ndesc;
bus_dmamap_t sc_dmamap;
struct hpc_dma_desc *sc_desc_kva; /* Virtual address */
bus_addr_t sc_desc_pa; /* DMA address */
ssize_t sc_dlen; /* number of bytes transfered */
struct hpc_values *hpc; /* constants for HPC1/3 */
};
void hpcdma_init(struct hpc_attach_args *, struct hpc_dma_softc *, int);
void hpcdma_sglist_create(struct hpc_dma_softc *, bus_dmamap_t);
void hpcdma_cntl(struct hpc_dma_softc *, uint32_t);
void hpcdma_reset(struct hpc_dma_softc *);
void hpcdma_flush(struct hpc_dma_softc *);
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