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/* $OpenBSD: esavar.h,v 1.3 2024/10/22 21:50:02 jsg Exp $ */
/* $NetBSD: esavar.h,v 1.4 2002/03/16 14:34:01 jmcneill Exp $ */
/*
* Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill@invisible.yi.org>
* 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. 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.
*/
/*
* ESS Allegro-1 / Maestro3 Audio Driver
*
* Based on the FreeBSD maestro3 driver
*
*/
/*
* Number of simultaneous voices
*
* NOTE: The current code attaches audio0 thru audioESA_NUM_VOICES-1
* to this driver, and a lot of people probably don't want that.
* So, we'll default to 1 but we'll allow for the possibility of
* more.
*
* The current MINISRC image limits us to a maximum of 4 simultaneous voices.
*/
#ifndef ESA_NUM_VOICES
#define ESA_NUM_VOICES 1
#endif
#define KERNADDR(p) ((void *)((p)->addr))
#define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr)
#define ESA_MINRATE 8000
#define ESA_MAXRATE 48000
struct esa_list {
int currlen;
int mem_addr;
int max;
int indexmap[ESA_NUM_VOICES * 2];
};
struct esa_dma {
bus_dmamap_t map;
caddr_t addr;
bus_dma_segment_t segs[1];
int nsegs;
size_t size;
struct esa_dma *next;
};
struct esa_channel {
int active;
int data_offset;
int index;
size_t bufsize;
int blksize;
int pos;
void *buf;
u_int32_t start;
u_int32_t count;
/* mode settings */
struct audio_params mode;
void (*intr)(void *);
void *arg;
};
struct esa_voice {
struct device *parent; /* pointer to our parent */
struct esa_channel play;
struct esa_channel rec;
struct esa_dma *dma;
int inlist;
int index; /* 0: play, 1: record */
};
struct esa_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_addr_t sc_iob;
bus_size_t sc_ios;
pcitag_t sc_tag;
pci_chipset_tag_t sc_pct;
bus_dma_tag_t sc_dmat;
pcireg_t sc_pcireg;
void *sc_ih;
struct ac97_codec_if *codec_if;
struct ac97_host_if host_if;
enum ac97_host_flags codec_flags;
struct device *sc_audiodev[ESA_NUM_VOICES];
struct esa_voice voice[ESA_NUM_VOICES];
struct esa_dma *sc_dmas;
int count;
/* timer management */
int sc_ntimers;
/* packed list structures */
struct esa_list mixer_list;
struct esa_list adc1_list;
struct esa_list dma_list;
struct esa_list msrc_list;
int type; /* Allegro-1 or Maestro 3? */
int delay1, delay2;
u_int16_t *savemem;
};
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