1 /* $NetBSD: vsaudio.c,v 1.7 2020/09/12 05:19:16 isaki Exp $ */
2 /* $OpenBSD: vsaudio.c,v 1.4 2013/05/15 21:21:11 ratchov Exp $ */
3
4 /*
5 * Copyright (c) 2011 Miodrag Vallat.
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 /*
20 * Copyright (c) 1995 Rolf Grossmann
21 * All rights reserved.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * This product includes software developed by Rolf Grossmann.
34 * 4. The name of the author may not be used to endorse or promote products
35 * derived from this software without specific prior written permission
36 *
37 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
38 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
40 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
41 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
46 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 */
48
49 /*
50 * Audio backend for the VAXstation 4000 AMD79C30 audio chip.
51 * Currently working in pseudo-DMA mode; DMA operation may be possible and
52 * needs to be investigated.
53 */
54 /*
55 * Although he did not claim copyright for his work, this code owes a lot
56 * to Blaz Antonic <blaz.antonic@siol.net> who figured out a working
57 * interrupt triggering routine in vsaudio_match().
58 */
59 /*
60 * Ported to NetBSD, from OpenBSD, by Björn Johannesson (rherdware@yahoo.com)
61 * in December 2014
62 */
63
64 #include "audio.h"
65 #if NAUDIO > 0
66
67 #include <sys/errno.h>
68 #include <sys/evcnt.h>
69 #include <sys/intr.h>
70 #include <sys/param.h>
71 #include <sys/systm.h>
72 #include <sys/device.h>
73
74 #include <machine/cpu.h>
75 #include <machine/sid.h>
76 #include <machine/scb.h>
77 #include <machine/vsbus.h>
78
79 #include <sys/audioio.h>
80 #include <dev/audio/audio_if.h>
81
82 #include <dev/ic/am7930reg.h>
83 #include <dev/ic/am7930var.h>
84
85 /* physical addresses of the AM79C30 chip */
86 #define VSAUDIO_CSR 0x200d0000
87 #define VSAUDIO_CSR_KA49 0x26800000
88
89 struct vsaudio_softc {
90 struct am7930_softc sc_am7930; /* glue to MI code */
91
92 bus_space_tag_t sc_bt; /* bus cookie */
93 bus_space_handle_t sc_bh; /* device registers */
94 };
95
96 static int vsaudio_match(struct device *parent, struct cfdata *match, void *);
97 static void vsaudio_attach(device_t parent, device_t self, void *);
98
99 static void vsaudio_hwintr(void *);
100
101 CFATTACH_DECL_NEW(vsaudio, sizeof(struct vsaudio_softc), vsaudio_match,
102 vsaudio_attach, NULL, NULL);
103
104 /*
105 * Hardware access routines for the MI code
106 */
107 uint8_t vsaudio_codec_dread(struct am7930_softc *, int);
108 void vsaudio_codec_dwrite(struct am7930_softc *, int, uint8_t);
109
110 struct am7930_glue vsaudio_glue = {
111 vsaudio_codec_dread,
112 vsaudio_codec_dwrite,
113 };
114
115 /*
116 * Interface to the MI audio layer.
117 */
118 int vsaudio_getdev(void *, struct audio_device *);
119
120 struct audio_hw_if vsaudio_hw_if = {
121 .query_format = am7930_query_format,
122 .set_format = am7930_set_format,
123 .commit_settings = am7930_commit_settings,
124 .trigger_output = am7930_trigger_output,
125 .trigger_input = am7930_trigger_input,
126 .halt_output = am7930_halt_output,
127 .halt_input = am7930_halt_input,
128 .getdev = vsaudio_getdev,
129 .set_port = am7930_set_port,
130 .get_port = am7930_get_port,
131 .query_devinfo = am7930_query_devinfo,
132 .get_props = am7930_get_props,
133 .get_locks = am7930_get_locks,
134 };
135
136
137 struct audio_device vsaudio_device = {
138 "am7930",
139 "x",
140 "vsaudio"
141 };
142
143
144 static int
vsaudio_match(struct device * parent,struct cfdata * match,void * aux)145 vsaudio_match(struct device *parent, struct cfdata *match, void *aux)
146 {
147 struct vsbus_attach_args *va = aux;
148 volatile uint32_t *regs;
149 int i;
150
151 switch (vax_boardtype) {
152 #if defined(VAX_BTYP_46) || defined(VAX_BTYP_48)
153 case VAX_BTYP_46:
154 case VAX_BTYP_48:
155 if (va->va_paddr != VSAUDIO_CSR)
156 return 0;
157 break;
158 #endif
159 #if defined(VAX_BTYP_49)
160 case VAX_BTYP_49:
161 if (va->va_paddr != VSAUDIO_CSR_KA49)
162 return 0;
163 break;
164 #endif
165 default:
166 return 0;
167 }
168
169 regs = (volatile uint32_t *)va->va_addr;
170 regs[AM7930_DREG_CR] = AM7930_IREG_INIT;
171 regs[AM7930_DREG_DR] = AM7930_INIT_PMS_ACTIVE | AM7930_INIT_INT_ENABLE;
172
173 regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR1;
174 regs[AM7930_DREG_DR] = 0;
175
176 regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR2;
177 regs[AM7930_DREG_DR] = 0;
178
179 regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR3;
180 regs[AM7930_DREG_DR] = (AM7930_MCRCHAN_BB << 4) | AM7930_MCRCHAN_BA;
181
182 regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR4;
183 regs[AM7930_DREG_DR] = AM7930_MCR4_INT_ENABLE;
184
185 for (i = 10; i < 20; i++)
186 regs[AM7930_DREG_BBTB] = i;
187 delay(1000000); /* XXX too large */
188
189 return 1;
190 }
191
192
193 static void
vsaudio_attach(device_t parent,device_t self,void * aux)194 vsaudio_attach(device_t parent, device_t self, void *aux)
195 {
196 struct vsbus_attach_args *va = aux;
197 struct vsaudio_softc *sc = device_private(self);
198 struct am7930_softc *amsc = &sc->sc_am7930;
199
200 if (bus_space_map(va->va_memt, va->va_paddr, AM7930_DREG_SIZE << 2, 0,
201 &sc->sc_bh) != 0) {
202 printf(": can't map registers\n");
203 return;
204 }
205 sc->sc_bt = va->va_memt;
206 amsc->sc_dev = self;
207 amsc->sc_glue = &vsaudio_glue;
208 am7930_init(amsc, AUDIOAMD_POLL_MODE);
209 scb_vecalloc(va->va_cvec, vsaudio_hwintr, amsc, SCB_ISTACK,
210 &amsc->sc_intrcnt);
211 evcnt_attach_dynamic(&amsc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
212 device_xname(self), "intr");
213
214 aprint_normal("\n");
215 audio_attach_mi(&vsaudio_hw_if, sc, self);
216 }
217
218 static void
vsaudio_hwintr(void * arg)219 vsaudio_hwintr(void *arg)
220 {
221
222 am7930_hwintr(arg);
223 }
224
225 /* direct read */
226 uint8_t
vsaudio_codec_dread(struct am7930_softc * amsc,int reg)227 vsaudio_codec_dread(struct am7930_softc *amsc, int reg)
228 {
229 struct vsaudio_softc *sc = (struct vsaudio_softc *)amsc;
230
231 return bus_space_read_1(sc->sc_bt, sc->sc_bh, reg << 2);
232 }
233
234 /* direct write */
235 void
vsaudio_codec_dwrite(struct am7930_softc * amsc,int reg,uint8_t val)236 vsaudio_codec_dwrite(struct am7930_softc *amsc, int reg, uint8_t val)
237 {
238 struct vsaudio_softc *sc = (struct vsaudio_softc *)amsc;
239
240 bus_space_write_1(sc->sc_bt, sc->sc_bh, reg << 2, val);
241 }
242
243 int
vsaudio_getdev(void * addr,struct audio_device * retp)244 vsaudio_getdev(void *addr, struct audio_device *retp)
245 {
246
247 *retp = vsaudio_device;
248 return 0;
249 }
250
251 #endif /* NAUDIO > 0 */
252