NetBSD/sys/arch/sun3/dev/dmavar.h

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/* $NetBSD: dmavar.h,v 1.4 1999/04/08 04:46:41 gwr Exp $ */
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/*
* Copyright (c) 1994 Peter Galbavy. All rights reserved.
* 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 Peter Galbavy.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 dma_softc {
struct device sc_dev; /* us as a device */
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struct ncr53c9x_softc *sc_esp; /* my scsi */
volatile struct dma_regs *sc_regs; /* the registers */
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int sc_active; /* DMA active ? */
u_int sc_rev; /* revision */
int sc_burst; /* DVMA burst size in effect */
caddr_t sc_dvmakaddr; /* DVMA cookies */
caddr_t sc_dvmaaddr; /* */
u_long sc_dmasaddr; /* Slave address */
size_t sc_dmasize;
caddr_t *sc_dmaaddr;
size_t *sc_dmalen;
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#if 0
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void (*reset)(struct dma_softc *); /* reset routine */
int (*intr)(struct dma_softc *); /* interrupt ! */
int (*setup)(struct dma_softc *, caddr_t *, size_t *, int, size_t *);
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#endif
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};
#define DMACSR(sc) ((sc)->sc_regs->csr)
#define DMADDR(sc) ((sc)->sc_regs->addr)
#define DMACNT(sc) ((sc)->sc_regs->bcnt)
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struct dma_softc * espdmafind __P((int));
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void dma_reset __P((struct dma_softc *));
int dma_setup __P((struct dma_softc *, caddr_t *, size_t *, int, size_t *));
int espdmaintr __P((struct dma_softc *));