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Annotation of sys/arch/sparc/dev/dmavar.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: dmavar.h,v 1.7 2006/06/02 20:00:54 miod Exp $ */
        !             2: /*     $NetBSD: dmavar.h,v 1.11 1996/11/27 21:49:53 pk Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994 Peter Galbavy.  All rights reserved.
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  *
        !            15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            17:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            18:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            19:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            20:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            21:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            22:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            23:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            24:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            25:  */
        !            26:
        !            27: struct dma_softc {
        !            28:        struct device sc_dev;                   /* us as a device */
        !            29:        struct esp_softc *sc_esp;               /* my scsi */
        !            30:        struct le_softc *sc_le;                 /* my ethernet */
        !            31:        struct dma_regs *sc_regs;               /* the registers */
        !            32:        int     sc_active;                      /* DMA active ? */
        !            33:        u_int   sc_rev;                         /* revision */
        !            34:        int     sc_burst;                       /* DVMA burst size in effect */
        !            35:        caddr_t sc_dvmakaddr;                   /* DVMA cookies */
        !            36:        caddr_t sc_dvmaaddr;                    /*              */
        !            37:        size_t  sc_dmasize;
        !            38:        caddr_t *sc_dmaaddr;
        !            39:        size_t  *sc_dmalen;
        !            40:        void (*reset)(struct dma_softc *);      /* reset routine */
        !            41:        void (*enintr)(struct dma_softc *);     /* enable interrupts */
        !            42:        int (*isintr)(struct dma_softc *);      /* interrupt ? */
        !            43:        int (*intr)(struct dma_softc *);        /* interrupt ! */
        !            44:        int (*setup)(struct dma_softc *, caddr_t *, size_t *, int, size_t *);
        !            45:        void (*go)(struct dma_softc *);
        !            46:        u_int   sc_dmactl;
        !            47: };
        !            48:
        !            49: #define DMACSR(sc)     (sc->sc_regs->csr)
        !            50: #define DMADDR(sc)     (sc->sc_regs->addr)
        !            51: #define DMACNT(sc)     (sc->sc_regs->bcnt)
        !            52:
        !            53: /* DMA engine functions */
        !            54: #define DMA_ENINTR(r)          (((r)->enintr)(r))
        !            55: #define DMA_ISINTR(r)          (((r)->isintr)(r))
        !            56: #define DMA_RESET(r)           (((r)->reset)(r))
        !            57: #define DMA_INTR(r)            (((r)->intr)(r))
        !            58: #define DMA_ISACTIVE(r)                ((r)->sc_active)
        !            59: #define DMA_SETUP(a, b, c, d, e)       (((a)->setup)(a, b, c, d, e))
        !            60: #define DMA_GO(r)              (((r)->go)(r))
        !            61:
        !            62: void   dma_setuphandlers(struct dma_softc *);