85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/* $NetBSD: nextdmavar.h,v 1.14 2005/12/11 12:18:25 christos Exp $ */
|
|
/*
|
|
* Copyright (c) 1998 Darrin B. Jewell
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Darrin B. Jewell
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
struct nextdma_channel {
|
|
const char *nd_name;
|
|
int nd_base;
|
|
int nd_size;
|
|
u_long nd_intr;
|
|
int (*nd_intrfunc)(void *);
|
|
};
|
|
|
|
struct nextdma_config {
|
|
/* This is called to get another map to dma */
|
|
bus_dmamap_t (*nd_continue_cb)(void *);
|
|
/* This is called when a map has completed dma */
|
|
void (*nd_completed_cb)(bus_dmamap_t, void *);
|
|
/* This is called when dma shuts down */
|
|
void (*nd_shutdown_cb) (void *);
|
|
/* callback argument */
|
|
void *nd_cb_arg;
|
|
};
|
|
|
|
struct nextdma_status {
|
|
bus_dmamap_t nd_map; /* map currently in dd_next */
|
|
int nd_idx; /* idx of segment currently in dd_next */
|
|
bus_dmamap_t nd_map_cont; /* map needed to continue DMA */
|
|
int nd_idx_cont; /* segment index to continue DMA */
|
|
int nd_exception;
|
|
};
|
|
|
|
struct nextdma_softc {
|
|
struct device sc_dev;
|
|
struct nextdma_channel *sc_chan;
|
|
bus_space_handle_t sc_bsh; /* bus space handle */
|
|
bus_space_tag_t sc_bst; /* bus space tag */
|
|
bus_dma_tag_t sc_dmat;
|
|
struct nextdma_config sc_conf;
|
|
struct nextdma_status sc_stat;
|
|
struct evcnt sc_intrcnt;
|
|
};
|
|
|
|
#define nextdma_setconf(nsc, elem, val) nsc->sc_conf.nd_##elem = (val)
|
|
|
|
/* Configure the interface & initialize private structure vars */
|
|
void nextdma_config(struct nextdma_softc *);
|
|
void nextdma_init(struct nextdma_softc *);
|
|
void nextdma_start(struct nextdma_softc *, u_long);
|
|
|
|
/* query to see if nextdma is finished */
|
|
int nextdma_finished(struct nextdma_softc *);
|
|
void nextdma_reset(struct nextdma_softc *);
|
|
|
|
void nextdma_print(struct nextdma_softc *);
|
|
|
|
struct nextdma_softc *nextdma_findchannel(const char *);
|