0ac0d0d4e4
Based on mvme68k and Atari drivers for the same chipset with the addition of bus_space support. Attempts have been made to seperate out the machine dependent dma components and more work is required in this area. Tested on SGI R4K Indy, but has little testing on other platforms.
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/* $NetBSD: hpcdma.h,v 1.1 2001/08/19 03:16:21 wdk 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.
|
|
*/
|
|
|
|
#ifndef _SGIMIPS_BUS_DMA_H
|
|
#define _SGIMIPS_BUS_DMA_H
|
|
|
|
#include <machine/bus.h>
|
|
|
|
struct hpc_dma_softc {
|
|
bus_space_tag_t sc_bst;
|
|
bus_space_handle_t sc_bsh;
|
|
bus_dma_tag_t sc_dmat;
|
|
|
|
u_int32_t sc_flags;
|
|
#define HPC_DMA_ACTIVE 0x80
|
|
#define HPC_DMA_READ 0x20
|
|
u_int32_t sc_dmacmd;
|
|
int sc_ndesc;
|
|
bus_dmamap_t sc_dmamap;
|
|
struct hpc_dma_desc *sc_desc_kva; /* Virtual address */
|
|
struct hpc_dma_desc *sc_desc_pa; /* Physical address */
|
|
};
|
|
|
|
|
|
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 *, u_int32_t);
|
|
void hpcdma_flush(struct hpc_dma_softc *);
|
|
|
|
#endif
|