The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sparc64/sbus/lsi64854var.h

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    1 /*      $NetBSD: lsi64854var.h,v 1.12 2008/04/28 20:23:50 martin Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Paul Kranenburg.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 /*      $FreeBSD: releng/8.4/sys/sparc64/sbus/lsi64854var.h 227303 2011-11-07 13:17:40Z marius $ */
   33 
   34 struct lsi64854_softc {
   35         device_t                sc_dev;
   36 
   37         struct resource         *sc_res;
   38         u_int                   sc_rev;         /* revision */
   39         int                     sc_burst;       /* max suported burst size */
   40 
   41         int                     sc_channel;
   42 #define L64854_CHANNEL_SCSI     1
   43 #define L64854_CHANNEL_ENET     2
   44 #define L64854_CHANNEL_PP       3
   45         void                    *sc_client;
   46 
   47         int                     sc_active;      /* DMA active? */
   48         bus_dmamap_t            sc_dmamap;      /* DMA map for bus_dma_* */
   49 
   50         bus_dma_tag_t           sc_parent_dmat;
   51         bus_dma_tag_t           sc_buffer_dmat;
   52         bus_size_t              sc_maxdmasize;
   53         int                     sc_datain;
   54         size_t                  sc_dmasize;
   55         void                    **sc_dmaaddr;
   56         size_t                  *sc_dmalen;
   57 
   58         void    (*reset)(struct lsi64854_softc *);/* reset routine */
   59         int     (*setup)(struct lsi64854_softc *, void **, size_t *,
   60                     int, size_t *);             /* DMA setup */
   61         int     (*intr)(void *);                /* interrupt handler */
   62 
   63         u_int                   sc_dmactl;
   64         int                     sc_dodrain;
   65 };
   66 
   67 #define L64854_GCSR(sc)         bus_read_4((sc)->sc_res, L64854_REG_CSR)
   68 #define L64854_SCSR(sc, csr)    bus_write_4((sc)->sc_res, L64854_REG_CSR, csr)
   69 
   70 /*
   71  * DMA engine interface functions.
   72  */
   73 #define DMA_RESET(sc)                   (((sc)->reset)(sc))
   74 #define DMA_INTR(sc)                    (((sc)->intr)(sc))
   75 #define DMA_SETUP(sc, a, l, d, s)       (((sc)->setup)(sc, a, l, d, s))
   76 #define DMA_ISACTIVE(sc)                ((sc)->sc_active)
   77 
   78 #define DMA_ENINTR(sc) do {                     \
   79         uint32_t csr = L64854_GCSR(sc);         \
   80         csr |= L64854_INT_EN;                   \
   81         L64854_SCSR(sc, csr);                   \
   82 } while (/* CONSTCOND */0)
   83 
   84 #define DMA_ISINTR(sc)  (L64854_GCSR(sc) & (D_INT_PEND|D_ERR_PEND))
   85 
   86 #define DMA_GO(sc) do {                         \
   87         uint32_t csr = L64854_GCSR(sc);         \
   88         csr |= D_EN_DMA;                        \
   89         L64854_SCSR(sc, csr);                   \
   90         sc->sc_active = 1;                      \
   91 } while (/* CONSTCOND */0)
   92 
   93 int     lsi64854_attach(struct lsi64854_softc *);
   94 int     lsi64854_detach(struct lsi64854_softc *);

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