sys/dev/pci/esavar.h

   1 /* $NetBSD: esavar.h,v 1.9 2007/12/09 20:28:07 jmcneill Exp $ */
   2
   3 /*
   4  * Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill@invisible.ca>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * ESS Allegro-1 / Maestro3 Audio Driver
  30  *
  31  * Based on the FreeBSD maestro3 driver
  32  *
  33  */
  34
  35 /*
  36  * Number of simultaneous voices
  37  *
  38  * NOTE: The current code attaches audio0 thru audioESA_NUM_VOICES-1
  39  *       to this driver, and a lot of people probably don't want that.
  40  *       So, we'll default to 1 but we'll allow for the possibility of
  41  *       more.
  42  *
  43  * The current MINISRC image limits us to a maximum of 4 simultaneous voices.
  44  */
  45 #ifndef ESA_NUM_VOICES
  46 #define ESA_NUM_VOICES          1
  47 #endif
  48
  49 #define KERNADDR(p)     ((void *)((p)->addr))
  50 #define DMAADDR(p)      ((p)->map->dm_segs[0].ds_addr)
  51
  52 #define ESA_MINRATE     8000
  53 #define ESA_MAXRATE     48000
  54
  55 struct esa_list {
  56         int                     currlen;
  57         int                     mem_addr;
  58         int                     max;
  59         int                     indexmap[ESA_NUM_VOICES * 2];
  60 };
  61
  62 struct esa_dma {
  63         bus_dmamap_t            map;
  64         void *                  addr;
  65         bus_dma_segment_t       segs[1];
  66         int                     nsegs;
  67         size_t                  size;
  68         struct esa_dma          *next;
  69 };
  70
  71 struct esa_channel {
  72         int                     active;
  73         int                     data_offset;
  74         int                     index;
  75         size_t                  bufsize;
  76         int                     blksize;
  77         int                     pos;
  78         void                    *buf;
  79         uint32_t                start;
  80         uint32_t                count;
  81
  82         /* mode settings */
  83         struct audio_params     mode;
  84
  85         void                    (*intr)(void *);
  86         void                    *arg;
  87 };
  88
  89 struct esa_voice {
  90         device_t                parent; /* pointer to our parent */
  91         struct esa_channel      play;
  92         struct esa_channel      rec;
  93         struct esa_dma          *dma;
  94         int                     inlist;
  95         int                     index;  /* 0: play, 1: record */
  96 };
  97
  98 struct esa_softc
  99 {
 100         device_t                sc_dev;
 101         bus_space_tag_t         sc_iot;
 102         bus_space_handle_t      sc_ioh;
 103         bus_addr_t              sc_iob;
 104         bus_size_t              sc_ios;
 105
 106         pcitag_t                sc_tag;
 107         pci_chipset_tag_t       sc_pct;
 108         bus_dma_tag_t           sc_dmat;
 109         pcireg_t                sc_pcireg;
 110
 111         void                    *sc_ih;
 112
 113         struct ac97_codec_if    *codec_if;
 114         struct ac97_host_if     host_if;
 115         enum ac97_host_flags    codec_flags;
 116
 117         struct device           *sc_audiodev[ESA_NUM_VOICES];
 118
 119         struct esa_voice        voice[ESA_NUM_VOICES];
 120         struct esa_dma          *sc_dmas;
 121         int                     count;
 122
 123         /* timer management */
 124         int                     sc_ntimers;
 125
 126         /* packed list structures */
 127         struct esa_list         mixer_list;
 128         struct esa_list         adc1_list;
 129         struct esa_list         dma_list;
 130         struct esa_list         msrc_list;
 131
 132         int                     type;           /* Allegro-1 or Maestro 3? */
 133         int                     delay1, delay2;
 134
 135         uint16_t                *savemem;
 136 };