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Annotation of sys/arch/sparc/dev/dmavar.h, Revision 1.1.1.1

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 *);