1 /* $NetBSD: dmavar.h,v 1.4 1999/04/08 04:46:41 gwr Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Peter Galbavy. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 struct dma_softc { 32 struct device sc_dev; /* us as a device */ 33 struct ncr53c9x_softc *sc_esp; /* my scsi */ 34 volatile struct dma_regs *sc_regs; /* the registers */ 35 int sc_active; /* DMA active ? */ 36 u_int sc_rev; /* revision */ 37 int sc_burst; /* DVMA burst size in effect */ 38 caddr_t sc_dvmakaddr; /* DVMA cookies */ 39 caddr_t sc_dvmaaddr; /* */ 40 u_long sc_dmasaddr; /* Slave address */ 41 size_t sc_dmasize; 42 caddr_t *sc_dmaaddr; 43 size_t *sc_dmalen; 44 #if 0 45 void (*reset)(struct dma_softc *); /* reset routine */ 46 int (*intr)(struct dma_softc *); /* interrupt ! */ 47 int (*setup)(struct dma_softc *, caddr_t *, size_t *, int, size_t *); 48 #endif 49 }; 50 51 #define DMACSR(sc) ((sc)->sc_regs->csr) 52 #define DMADDR(sc) ((sc)->sc_regs->addr) 53 #define DMACNT(sc) ((sc)->sc_regs->bcnt) 54 55 struct dma_softc * espdmafind __P((int)); 56 57 void dma_reset __P((struct dma_softc *)); 58 int dma_setup __P((struct dma_softc *, caddr_t *, size_t *, int, size_t *)); 59 60 int espdmaintr __P((struct dma_softc *)); 61