1 /*-
2 * Copyright (c) 1999 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <dev/sound/pcm/sound.h>
28 #include <dev/sound/isa/sb.h>
29
30 #include <isa/isavar.h>
31
32 SND_DECLARE_FILE("$FreeBSD$");
33
34 #ifdef __alpha__
35 static int
36 es1888_dspready(u_int32_t port)
37 {
38 return ((inb(port + SBDSP_STATUS) & 0x80) == 0);
39 }
40
41 static int
42 es1888_dspwr(u_int32_t port, u_char val)
43 {
44 int i;
45
46 for (i = 0; i < 1000; i++) {
47 if (es1888_dspready(port)) {
48 outb(port + SBDSP_CMD, val);
49 return 0;
50 }
51 if (i > 10) DELAY((i > 100)? 1000 : 10);
52 }
53 return ENXIO;
54 }
55
56 static u_int
57 es1888_get_byte(u_int32_t port)
58 {
59 int i;
60
61 for (i = 1000; i > 0; i--) {
62 if (inb(port + DSP_DATA_AVAIL) & 0x80)
63 return inb(port + DSP_READ);
64 else
65 DELAY(20);
66 }
67 return 0xffff;
68 }
69
70 static int
71 es1888_reset(u_int32_t port)
72 {
73 outb(port + SBDSP_RST, 3);
74 DELAY(100);
75 outb(port + SBDSP_RST, 0);
76 if (es1888_get_byte(port) != 0xAA) {
77 return ENXIO; /* Sorry */
78 }
79 return 0;
80 }
81
82 static void
83 es1888_configuration_mode(void)
84 {
85 /*
86 * Emit the Read-Sequence-Key to enter configuration
87 * mode. Note this only works after a reset (or after bit 2 of
88 * mixer register 0x40 is set).
89 *
90 * 3 reads from 0x229 in a row guarantees reset of key
91 * sequence to beginning.
92 */
93 inb(0x229);
94 inb(0x229);
95 inb(0x229);
96
97 inb(0x22b); /* state 1 */
98 inb(0x229); /* state 2 */
99 inb(0x22b); /* state 3 */
100 inb(0x229); /* state 4 */
101 inb(0x229); /* state 5 */
102 inb(0x22b); /* state 6 */
103 inb(0x229); /* state 7 */
104 }
105
106 static void
107 es1888_set_port(u_int32_t port)
108 {
109 es1888_configuration_mode();
110 inb(port);
111 }
112 #endif
113
114 static void
115 es1888_identify(driver_t *driver, device_t parent)
116 {
117 /*
118 * Only use this on alpha since PNPBIOS is a better solution on x86.
119 */
120 #ifdef __alpha__
121 u_int32_t lo, hi;
122 device_t dev;
123
124 es1888_set_port(0x220);
125 if (es1888_reset(0x220))
126 return;
127
128 /*
129 * Check identification bytes for es1888.
130 */
131 if (es1888_dspwr(0x220, 0xe7))
132 return;
133 hi = es1888_get_byte(0x220);
134 lo = es1888_get_byte(0x220);
135 if (hi != 0x68 || (lo & 0xf0) != 0x80)
136 return;
137
138 /*
139 * Program irq and drq.
140 */
141 if (es1888_dspwr(0x220, 0xc6) /* enter extended mode */
142 || es1888_dspwr(0x220, 0xb1) /* write register b1 */
143 || es1888_dspwr(0x220, 0x14) /* enable irq 5 */
144 || es1888_dspwr(0x220, 0xb2) /* write register b1 */
145 || es1888_dspwr(0x220, 0x18)) /* enable drq 1 */
146 return;
147
148 /*
149 * Create the device and program its resources.
150 */
151 dev = BUS_ADD_CHILD(parent, ISA_ORDER_PNP, NULL, -1);
152 bus_set_resource(dev, SYS_RES_IOPORT, 0, 0x220, 0x10);
153 bus_set_resource(dev, SYS_RES_IRQ, 0, 5, 1);
154 bus_set_resource(dev, SYS_RES_DRQ, 0, 1, 1);
155 isa_set_vendorid(dev, PNP_EISAID("ESS1888"));
156 isa_set_logicalid(dev, PNP_EISAID("ESS1888"));
157 #endif
158 }
159
160 static device_method_t es1888_methods[] = {
161 /* Device interface */
162 DEVMETHOD(device_identify, es1888_identify),
163
164 { 0, 0 }
165 };
166
167 static driver_t es1888_driver = {
168 "pcm",
169 es1888_methods,
170 1, /* no softc */
171 };
172
173 DRIVER_MODULE(snd_es1888, isa, es1888_driver, pcm_devclass, 0, 0);
174 MODULE_DEPEND(snd_es1888, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
175 MODULE_VERSION(snd_es1888, 1);
176
177
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