/*      $NetBSD: cs4231var.h,v 1.10 2011/11/23 23:07:32 jmcneill Exp $  */

/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

#ifndef _DEV_IC_CS4231VAR_H_
#define _DEV_IC_CS4231VAR_H_

#define AUDIOCS_PROM_NAME       "SUNW,CS4231"

/*
* List of device memory allocations (see cs4231_malloc/cs4231_free).
*/
struct cs_dma {
       struct  cs_dma  *next;
       void *          addr;
       bus_dmamap_t    dmamap;
       bus_dma_segment_t segs[1];
       int             nsegs;
       size_t          size;
};


/*
* DMA transfer to/from CS4231.
*/
struct cs_transfer {
       int t_active;           /* this transfer is currently active */
       struct cs_dma *t_dma;   /* dma memory to transfer from/to */
       vsize_t t_segsz;        /* size of the segment */
       vsize_t t_blksz;        /* call audio(9) after this many bytes */
       vsize_t t_cnt;          /* how far are we into the segment */

       void (*t_intr)(void*);  /* audio(9) callback */
       void *t_arg;

       const char *t_name;     /* for error/debug messages */

       struct evcnt t_intrcnt;
       struct evcnt t_ierrcnt;
};


/*
* Software state, per CS4231 audio chip.
*/
struct cs4231_softc {
       struct ad1848_softc sc_ad1848;  /* base device */

       bus_space_tag_t sc_bustag;
       bus_dma_tag_t sc_dmatag;

       struct cs_dma *sc_dmas;         /* allocated dma resources */

       struct evcnt sc_intrcnt;        /* parent counter */

       struct cs_transfer sc_playback;
       struct cs_transfer sc_capture;
};


/*
* Bus independent code shared by sbus and ebus attachments.
*/
void    cs4231_common_attach(struct cs4231_softc *, device_t,
                            bus_space_handle_t);
int     cs4231_transfer_init(struct cs4231_softc *, struct cs_transfer *,
                            bus_addr_t *, bus_size_t *,
                            void *, void *, int, void (*)(void *), void *);
void    cs4231_transfer_advance(struct cs_transfer *,
                               bus_addr_t *, bus_size_t *);


/*
* Bus independent audio(9) methods.
*/
int     cs4231_open(void *, int);
void    cs4231_close(void *);
int     cs4231_getdev(void *, struct audio_device *);
int     cs4231_set_port(void *, mixer_ctrl_t *);
int     cs4231_get_port(void *, mixer_ctrl_t *);
int     cs4231_query_devinfo(void *, mixer_devinfo_t *);
int     cs4231_get_props(void *);

void    *cs4231_malloc(void *, int, size_t);
void    cs4231_free(void *, void *, size_t);

#endif /* _DEV_IC_CS4231VAR_H_ */