1 | /* $NetBSD: esavar.h,v 1.12 2012/10/27 17:18:31 chs 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 | kmutex_t sc_lock; |
106 | kmutex_t sc_intr_lock; |
107 | |
108 | pcitag_t sc_tag; |
109 | pci_chipset_tag_t sc_pct; |
110 | bus_dma_tag_t sc_dmat; |
111 | pcireg_t sc_pcireg; |
112 | |
113 | void *sc_ih; |
114 | |
115 | struct ac97_codec_if *codec_if; |
116 | struct ac97_host_if host_if; |
117 | enum ac97_host_flags codec_flags; |
118 | |
119 | device_t sc_audiodev[ESA_NUM_VOICES]; |
120 | |
121 | struct esa_voice voice[ESA_NUM_VOICES]; |
122 | struct esa_dma *sc_dmas; |
123 | int count; |
124 | |
125 | /* timer management */ |
126 | int sc_ntimers; |
127 | |
128 | /* packed list structures */ |
129 | struct esa_list mixer_list; |
130 | struct esa_list adc1_list; |
131 | struct esa_list dma_list; |
132 | struct esa_list msrc_list; |
133 | |
134 | int type; /* Allegro-1 or Maestro 3? */ |
135 | int delay1, delay2; |
136 | |
137 | uint16_t *savemem; |
138 | size_t savememsz; |
139 | }; |
140 | |