sb.c revision 1.41 1 /* $NetBSD: sb.c,v 1.41 1997/03/13 02:20:07 mycroft Exp $ */
2
3 /*
4 * Copyright (c) 1991-1993 Regents of the University of California.
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. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the Computer Systems
18 * Engineering Group at Lawrence Berkeley Laboratory.
19 * 4. Neither the name of the University nor of the Laboratory may be used
20 * to endorse or promote products derived from this software without
21 * specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/errno.h>
40 #include <sys/ioctl.h>
41 #include <sys/syslog.h>
42 #include <sys/device.h>
43 #include <sys/proc.h>
44
45 #include <machine/cpu.h>
46 #include <machine/intr.h>
47 #include <machine/pio.h>
48
49 #include <sys/audioio.h>
50 #include <dev/audio_if.h>
51 #include <dev/mulaw.h>
52
53 #include <dev/isa/isavar.h>
54 #include <dev/isa/isadmavar.h>
55
56 #include <dev/isa/sbreg.h>
57 #include <dev/isa/sbvar.h>
58 #include <dev/isa/sbdspvar.h>
59
60 struct sb_softc {
61 struct device sc_dev; /* base device */
62 struct isadev sc_id; /* ISA device */
63 void *sc_ih; /* interrupt vectoring */
64
65 struct sbdsp_softc sc_sbdsp;
66 };
67
68 struct cfdriver sb_cd = {
69 NULL, "sb", DV_DULL
70 };
71
72 struct audio_device sb_device = {
73 "SoundBlaster",
74 "x",
75 "sb"
76 };
77
78 int sbopen __P((dev_t, int));
79 int sb_getdev __P((void *, struct audio_device *));
80
81 /*
82 * Define our interface to the higher level audio driver.
83 */
84
85 struct audio_hw_if sb_hw_if = {
86 sbopen,
87 sbdsp_close,
88 NULL,
89 sbdsp_set_in_sr,
90 sbdsp_get_in_sr,
91 sbdsp_set_out_sr,
92 sbdsp_get_out_sr,
93 sbdsp_query_encoding,
94 sbdsp_set_encoding,
95 sbdsp_get_encoding,
96 sbdsp_set_precision,
97 sbdsp_get_precision,
98 sbdsp_set_channels,
99 sbdsp_get_channels,
100 sbdsp_round_blocksize,
101 sbdsp_set_out_port,
102 sbdsp_get_out_port,
103 sbdsp_set_in_port,
104 sbdsp_get_in_port,
105 sbdsp_commit_settings,
106 mulaw_expand,
107 mulaw_compress,
108 sbdsp_dma_output,
109 sbdsp_dma_input,
110 sbdsp_haltdma,
111 sbdsp_haltdma,
112 sbdsp_contdma,
113 sbdsp_contdma,
114 sbdsp_speaker_ctl,
115 sb_getdev,
116 sbdsp_setfd,
117 sbdsp_mixer_set_port,
118 sbdsp_mixer_get_port,
119 sbdsp_mixer_query_devinfo,
120 0, /* not full-duplex */
121 0
122 };
123
124 /*
125 * Probe / attach routines.
126 */
127
128
129 int
130 sbmatch(sc)
131 struct sbdsp_softc *sc;
132 {
133 static u_char drq_conf[4] = {
134 0x01, 0x02, -1, 0x08
135 };
136
137 static u_char irq_conf[11] = {
138 -1, -1, 0x01, -1, -1, 0x02, -1, 0x04, -1, 0x01, 0x08
139 };
140
141 if (sbdsp_probe(sc) == 0) {
142 printf("%s: sbdsp probe failed\n", sc->sc_dev.dv_xname);
143 return 0;
144 }
145
146 /*
147 * Cannot auto-discover DMA channel.
148 */
149 if (ISSBPROCLASS(sc)) {
150 if (!SBP_DRQ_VALID(sc->sc_drq)) {
151 printf("%s: configured dma chan %d invalid\n",
152 sc->sc_dev.dv_xname, sc->sc_drq);
153 return 0;
154 }
155 if (ISSB16CLASS(sc))
156 sbdsp_mix_write(sc, SBP_SET_DRQ, drq_conf[sc->sc_drq]);
157 }
158 else {
159 if (!SB_DRQ_VALID(sc->sc_drq)) {
160 printf("%s: configured dma chan %d invalid\n",
161 sc->sc_dev.dv_xname, sc->sc_drq);
162 return 0;
163 }
164 }
165
166 #ifdef NEWCONFIG
167 /*
168 * If the IRQ wasn't compiled in, auto-detect it.
169 */
170 if (sc->sc_irq == IRQUNK) {
171 sc->sc_irq = isa_discoverintr(sbforceintr, sc);
172 sbdsp_reset(sc);
173 if (ISSBPROCLASS(sc)) {
174 if (!SBP_IRQ_VALID(sc->sc_irq)) {
175 printf("%s: couldn't auto-detect interrupt\n",
176 sc->sc_dev.dv_xname);
177 return 0;
178 }
179 }
180 else {
181 if (!SB_IRQ_VALID(sc->sc_irq)) {
182 printf("%s: couldn't auto-detect interrupt\n");
183 sc->sc_dev.dv_xname);
184 return 0;
185 }
186 }
187 } else
188 #endif
189 if (ISSBPROCLASS(sc)) {
190 if (!SBP_IRQ_VALID(sc->sc_irq)) {
191 printf("%s: configured irq %d invalid\n",
192 sc->sc_dev.dv_xname, sc->sc_irq);
193 return 0;
194 }
195 if (ISSB16CLASS(sc))
196 sbdsp_mix_write(sc, SBP_SET_IRQ, irq_conf[sc->sc_irq]);
197 }
198 else {
199 if (!SB_IRQ_VALID(sc->sc_irq)) {
200 printf("%s: configured irq %d invalid\n",
201 sc->sc_dev.dv_xname, sc->sc_irq);
202 return 0;
203 }
204 }
205 return 1;
206 }
207
208
209 void
210 sbattach(sc)
211 struct sbdsp_softc *sc;
212 {
213 int error;
214
215 sc->sc_ih = isa_intr_establish(sc->sc_ic, sc->sc_irq, IST_EDGE,
216 IPL_AUDIO, sbdsp_intr, sc);
217
218 sbdsp_attach(sc);
219
220 if ((error = audio_hardware_attach(&sb_hw_if, sc)) != 0)
221 printf("%s: could not attach to audio device driver (%d)\n",
222 sc->sc_dev.dv_xname, error);
223 }
224
225 #ifdef NEWCONFIG
226 void
227 sbforceintr(aux)
228 void *aux;
229 {
230 static char dmabuf;
231 struct sbdsp_softc *sc = aux;
232
233 /*
234 * Set up a DMA read of one byte.
235 * XXX Note that at this point we haven't called
236 * at_setup_dmachan(). This is okay because it just
237 * allocates a buffer in case it needs to make a copy,
238 * and it won't need to make a copy for a 1 byte buffer.
239 * (I think that calling at_setup_dmachan() should be optional;
240 * if you don't call it, it will be called the first time
241 * it is needed (and you pay the latency). Also, you might
242 * never need the buffer anyway.)
243 */
244 at_dma(DMAMODE_READ, &dmabuf, 1, sc->sc_drq);
245 if (sbdsp_wdsp(sc, SB_DSP_RDMA) == 0) {
246 (void)sbdsp_wdsp(sc, 0);
247 (void)sbdsp_wdsp(sc, 0);
248 }
249 }
250 #endif
251
252
253 /*
254 * Various routines to interface to higher level audio driver
255 */
256
257 int
258 sbopen(dev, flags)
259 dev_t dev;
260 int flags;
261 {
262 struct sbdsp_softc *sc;
263 int unit = AUDIOUNIT(dev);
264
265 if (unit >= sb_cd.cd_ndevs)
266 return ENODEV;
267
268 sc = sb_cd.cd_devs[unit];
269 if (!sc)
270 return ENXIO;
271
272 return sbdsp_open(sc, dev, flags);
273 }
274
275 int
276 sb_getdev(addr, retp)
277 void *addr;
278 struct audio_device *retp;
279 {
280 struct sbdsp_softc *sc = addr;
281
282 if (sc->sc_model & MODEL_JAZZ16)
283 strncpy(retp->name, "MV Jazz16", sizeof(retp->name));
284 else
285 strncpy(retp->name, "SoundBlaster", sizeof(retp->name));
286 sprintf(retp->version, "%d.%02d",
287 SBVER_MAJOR(sc->sc_model),
288 SBVER_MINOR(sc->sc_model));
289 strncpy(retp->config, "sb", sizeof(retp->config));
290
291 return 0;
292 }
293