c618f2cc87
* Fix problems with the DMA and SCSI drivers. * Make turbo machines sort of work. Additional fixes from me: * Determine if we're a turbo at boot time, by looking at the ROM machine type. * Set the display size correctly (1120 pixels wide, but padded to 1152 only on non-turbo machines). Caveats: * SCSI doesn't work on the turbo (or at least it blows chunks with no devices attached). * Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on turbo machines). * The boot block is prone to timing out.
85 lines
3.3 KiB
C
85 lines
3.3 KiB
C
/* $NetBSD: nextdmavar.h,v 1.11 2002/09/11 01:46:32 mycroft Exp $ */
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/*
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* Copyright (c) 1998 Darrin B. Jewell
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Darrin B. Jewell
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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struct nextdma_channel {
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char *nd_name;
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int nd_base;
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int nd_size;
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u_long nd_intr;
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int (*nd_intrfunc) __P((void *));
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};
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struct nextdma_config {
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/* This is called to get another map to dma */
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bus_dmamap_t (*nd_continue_cb) __P((void *));
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/* This is called when a map has completed dma */
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void (*nd_completed_cb) __P((bus_dmamap_t, void *));
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/* This is called when dma shuts down */
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void (*nd_shutdown_cb) __P((void *));
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/* callback argument */
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void *nd_cb_arg;
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};
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struct nextdma_status {
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bus_dmamap_t nd_map; /* map currently in dd_next */
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int nd_idx; /* idx of segment currently in dd_next */
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bus_dmamap_t nd_map_cont; /* map needed to continue DMA */
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int nd_idx_cont; /* segment index to continue DMA */
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int nd_exception;
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};
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struct nextdma_softc {
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struct device sc_dev;
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struct nextdma_channel *sc_chan;
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bus_space_handle_t sc_bsh; /* bus space handle */
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bus_space_tag_t sc_bst; /* bus space tag */
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bus_dma_tag_t sc_dmat;
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struct nextdma_config sc_conf;
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struct nextdma_status sc_stat;
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struct evcnt sc_intrcnt;
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};
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#define nextdma_setconf(nsc, elem, val) nsc->sc_conf.nd_##elem = (val)
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/* Configure the interface & initialize private structure vars */
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void nextdma_config __P((struct nextdma_softc *));
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void nextdma_init __P((struct nextdma_softc *));
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void nextdma_start __P((struct nextdma_softc *, u_long));
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/* query to see if nextdma is finished */
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int nextdma_finished __P((struct nextdma_softc *));
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void nextdma_reset __P((struct nextdma_softc *));
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void nextdma_print __P((struct nextdma_softc *));
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struct nextdma_softc *nextdma_findchannel __P((char *));
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