/* $OpenBSD: auixpvar.h,v 1.5 2020/06/27 00:33:59 jsg Exp $ */
/* $NetBSD: auixpvar.h,v 1.3 2005/01/12 15:54:34 kent Exp $*/

/*
 * Copyright (c) 2004, 2005 Reinoud Zandijk <reinoud@netbsd.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.
 */


/*
 * NetBSD audio driver for ATI IXP-{150,200,...} audio driver hardware.
 */

#define DMA_DESC_CHAIN  255

/* audio format structure describing our hardware capabilities */
/* XXX min and max sample rates are for AD1888 codec XXX */
#define AUIXP_NFORMATS 6

#define AUIXP_MINRATE  7000
#define AUIXP_MAXRATE 48000

/* auixp structures; used to record alloced DMA space */
struct auixp_dma {
        /* bus mappings */
        bus_dmamap_t             map;
        caddr_t                  addr;
        bus_dma_segment_t        segs[1];
        int                      nsegs;
        size_t                   size;

        /* audio feeder */
        void                     (*intr)(void *);
        void                    *intrarg;

        /* status and setup bits */
        int                      running;
        u_int32_t                linkptr;
        u_int32_t                dma_enable_bit;

        /* linked list of all mapped area's */
        SLIST_ENTRY(auixp_dma)   dma_chain;
};

struct auixp_codec {
        struct auixp_softc      *sc;

        int                      present;
        int                      codec_nr;

        struct ac97_codec_if    *codec_if;
        struct ac97_host_if      host_if;
        enum ac97_host_flags     codec_flags;
};

struct auixp_softc {
        struct device           sc_dev;
        void                    *sc_ih;

        /* card properties */
        int                     has_4ch, has_6ch, is_fixed, has_spdif;

        /* bus tags */
        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;

        /* DMA business */
        struct auixp_dma        *sc_output_dma;
        struct auixp_dma        *sc_input_dma;

        /* list of allocated DMA pieces */
        SLIST_HEAD(auixp_dma_list, auixp_dma) sc_dma_list;

        /* codec */
        struct auixp_codec      sc_codec;
        int                     sc_codec_not_ready_bits;

        /* last set audio parameters */
        struct audio_params     sc_play_params;
        struct audio_params     sc_rec_params;
};