sys/dev/ic/cs4231var.h

   1 /*      $NetBSD: cs4231var.h,v 1.7 2007/03/04 06:01:53 christos Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Paul Kranenburg.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _DEV_IC_CS4231VAR_H_
  33 #define _DEV_IC_CS4231VAR_H_
  34
  35 #define AUDIOCS_PROM_NAME       "SUNW,CS4231"
  36
  37 /*
  38  * List of device memory allocations (see cs4231_malloc/cs4231_free).
  39  */
  40 struct cs_dma {
  41         struct  cs_dma  *next;
  42         void *          addr;
  43         bus_dmamap_t    dmamap;
  44         bus_dma_segment_t segs[1];
  45         int             nsegs;
  46         size_t          size;
  47 };
  48
  49
  50 /*
  51  * DMA transfer to/from CS4231.
  52  */
  53 struct cs_transfer {
  54         int t_active;           /* this transfer is currently active */
  55         struct cs_dma *t_dma;   /* dma memory to transfer from/to */
  56         vsize_t t_segsz;        /* size of the segment */
  57         vsize_t t_blksz;        /* call audio(9) after this many bytes */
  58         vsize_t t_cnt;          /* how far are we into the segment */
  59
  60         void (*t_intr)(void*);  /* audio(9) callback */
  61         void *t_arg;
  62
  63         const char *t_name;     /* for error/debug messages */
  64
  65         struct evcnt t_intrcnt;
  66         struct evcnt t_ierrcnt;
  67 };
  68
  69
  70 /*
  71  * Software state, per CS4231 audio chip.
  72  */
  73 struct cs4231_softc {
  74         struct ad1848_softc sc_ad1848;  /* base device */
  75
  76         bus_space_tag_t sc_bustag;
  77         bus_dma_tag_t sc_dmatag;
  78
  79         struct cs_dma *sc_dmas;         /* allocated dma resources */
  80
  81         struct evcnt sc_intrcnt;        /* parent counter */
  82
  83         struct cs_transfer sc_playback;
  84         struct cs_transfer sc_capture;
  85 };
  86
  87
  88 /*
  89  * Bus independent code shared by sbus and ebus attachments.
  90  */
  91 void    cs4231_common_attach(struct cs4231_softc *, bus_space_handle_t);
  92 int     cs4231_transfer_init(struct cs4231_softc *, struct cs_transfer *,
  93                              bus_addr_t *, bus_size_t *,
  94                              void *, void *, int, void (*)(void *), void *);
  95 void    cs4231_transfer_advance(struct cs_transfer *,
  96                                 bus_addr_t *, bus_size_t *);
  97
  98
  99 /*
 100  * Bus independent audio(9) methods.
 101  */
 102 int     cs4231_open(void *, int);
 103 void    cs4231_close(void *);
 104 int     cs4231_getdev(void *, struct audio_device *);
 105 int     cs4231_set_port(void *, mixer_ctrl_t *);
 106 int     cs4231_get_port(void *, mixer_ctrl_t *);
 107 int     cs4231_query_devinfo(void *, mixer_devinfo_t *);
 108 int     cs4231_get_props(void *);
 109
 110 void    *cs4231_malloc(void *, int, size_t, struct malloc_type *, int);
 111 void    cs4231_free(void *, void *, struct malloc_type *);
 112
 113 #endif /* _DEV_IC_CS4231VAR_H_ */