trace: switch position of headers to what Meson requires
[qemu.git] / hw / audio / gus.c
1 /*
2 * QEMU Proxy for Gravis Ultrasound GF1 emulation by Tibor "TS" Sch├╝tz
3 *
4 * Copyright (c) 2002-2005 Vassili Karpov (malc)
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qapi/error.h"
27 #include "qemu/module.h"
28 #include "hw/audio/soundhw.h"
29 #include "audio/audio.h"
30 #include "hw/irq.h"
31 #include "hw/isa/isa.h"
32 #include "hw/qdev-properties.h"
33 #include "migration/vmstate.h"
34 #include "gusemu.h"
35 #include "gustate.h"
36
37 #define dolog(...) AUD_log ("audio", __VA_ARGS__)
38 #ifdef DEBUG
39 #define ldebug(...) dolog (__VA_ARGS__)
40 #else
41 #define ldebug(...)
42 #endif
43
44 #define TYPE_GUS "gus"
45 #define GUS(obj) OBJECT_CHECK (GUSState, (obj), TYPE_GUS)
46
47 typedef struct GUSState {
48 ISADevice dev;
49 GUSEmuState emu;
50 QEMUSoundCard card;
51 uint32_t freq;
52 uint32_t port;
53 int pos, left, shift, irqs;
54 int16_t *mixbuf;
55 uint8_t himem[1024 * 1024 + 32 + 4096];
56 int samples;
57 SWVoiceOut *voice;
58 int64_t last_ticks;
59 qemu_irq pic;
60 IsaDma *isa_dma;
61 PortioList portio_list1;
62 PortioList portio_list2;
63 } GUSState;
64
65 static uint32_t gus_readb(void *opaque, uint32_t nport)
66 {
67 GUSState *s = opaque;
68
69 return gus_read (&s->emu, nport, 1);
70 }
71
72 static void gus_writeb(void *opaque, uint32_t nport, uint32_t val)
73 {
74 GUSState *s = opaque;
75
76 gus_write (&s->emu, nport, 1, val);
77 }
78
79 static int write_audio (GUSState *s, int samples)
80 {
81 int net = 0;
82 int pos = s->pos;
83
84 while (samples) {
85 int nbytes, wbytes, wsampl;
86
87 nbytes = samples << s->shift;
88 wbytes = AUD_write (
89 s->voice,
90 s->mixbuf + (pos << (s->shift - 1)),
91 nbytes
92 );
93
94 if (wbytes) {
95 wsampl = wbytes >> s->shift;
96
97 samples -= wsampl;
98 pos = (pos + wsampl) % s->samples;
99
100 net += wsampl;
101 }
102 else {
103 break;
104 }
105 }
106
107 return net;
108 }
109
110 static void GUS_callback (void *opaque, int free)
111 {
112 int samples, to_play, net = 0;
113 GUSState *s = opaque;
114
115 samples = free >> s->shift;
116 to_play = MIN (samples, s->left);
117
118 while (to_play) {
119 int written = write_audio (s, to_play);
120
121 if (!written) {
122 goto reset;
123 }
124
125 s->left -= written;
126 to_play -= written;
127 samples -= written;
128 net += written;
129 }
130
131 samples = MIN (samples, s->samples);
132 if (samples) {
133 gus_mixvoices (&s->emu, s->freq, samples, s->mixbuf);
134
135 while (samples) {
136 int written = write_audio (s, samples);
137 if (!written) {
138 break;
139 }
140 samples -= written;
141 net += written;
142 }
143 }
144 s->left = samples;
145
146 reset:
147 gus_irqgen (&s->emu, (uint64_t)net * 1000000 / s->freq);
148 }
149
150 int GUS_irqrequest (GUSEmuState *emu, int hwirq, int n)
151 {
152 GUSState *s = emu->opaque;
153 /* qemu_irq_lower (s->pic); */
154 qemu_irq_raise (s->pic);
155 s->irqs += n;
156 ldebug ("irqrequest %d %d %d\n", hwirq, n, s->irqs);
157 return n;
158 }
159
160 void GUS_irqclear (GUSEmuState *emu, int hwirq)
161 {
162 GUSState *s = emu->opaque;
163 ldebug ("irqclear %d %d\n", hwirq, s->irqs);
164 qemu_irq_lower (s->pic);
165 s->irqs -= 1;
166 #ifdef IRQ_STORM
167 if (s->irqs > 0) {
168 qemu_irq_raise (s->pic[hwirq]);
169 }
170 #endif
171 }
172
173 void GUS_dmarequest (GUSEmuState *emu)
174 {
175 GUSState *s = emu->opaque;
176 IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma);
177 ldebug ("dma request %d\n", der->gusdma);
178 k->hold_DREQ(s->isa_dma, s->emu.gusdma);
179 }
180
181 static int GUS_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
182 {
183 GUSState *s = opaque;
184 IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma);
185 char tmpbuf[4096];
186 int pos = dma_pos, mode, left = dma_len - dma_pos;
187
188 ldebug ("read DMA %#x %d\n", dma_pos, dma_len);
189 mode = k->has_autoinitialization(s->isa_dma, s->emu.gusdma);
190 while (left) {
191 int to_copy = MIN ((size_t) left, sizeof (tmpbuf));
192 int copied;
193
194 ldebug ("left=%d to_copy=%d pos=%d\n", left, to_copy, pos);
195 copied = k->read_memory(s->isa_dma, nchan, tmpbuf, pos, to_copy);
196 gus_dma_transferdata (&s->emu, tmpbuf, copied, left == copied);
197 left -= copied;
198 pos += copied;
199 }
200
201 if (((mode >> 4) & 1) == 0) {
202 k->release_DREQ(s->isa_dma, s->emu.gusdma);
203 }
204 return dma_len;
205 }
206
207 static const VMStateDescription vmstate_gus = {
208 .name = "gus",
209 .version_id = 2,
210 .minimum_version_id = 2,
211 .fields = (VMStateField[]) {
212 VMSTATE_INT32 (pos, GUSState),
213 VMSTATE_INT32 (left, GUSState),
214 VMSTATE_INT32 (shift, GUSState),
215 VMSTATE_INT32 (irqs, GUSState),
216 VMSTATE_INT32 (samples, GUSState),
217 VMSTATE_INT64 (last_ticks, GUSState),
218 VMSTATE_BUFFER (himem, GUSState),
219 VMSTATE_END_OF_LIST ()
220 }
221 };
222
223 static const MemoryRegionPortio gus_portio_list1[] = {
224 {0x000, 1, 1, .write = gus_writeb },
225 {0x006, 10, 1, .read = gus_readb, .write = gus_writeb },
226 {0x100, 8, 1, .read = gus_readb, .write = gus_writeb },
227 PORTIO_END_OF_LIST (),
228 };
229
230 static const MemoryRegionPortio gus_portio_list2[] = {
231 {0, 2, 1, .read = gus_readb },
232 PORTIO_END_OF_LIST (),
233 };
234
235 static void gus_realizefn (DeviceState *dev, Error **errp)
236 {
237 ISADevice *d = ISA_DEVICE(dev);
238 GUSState *s = GUS (dev);
239 IsaDmaClass *k;
240 struct audsettings as;
241
242 s->isa_dma = isa_get_dma(isa_bus_from_device(d), s->emu.gusdma);
243 if (!s->isa_dma) {
244 error_setg(errp, "ISA controller does not support DMA");
245 return;
246 }
247
248 AUD_register_card ("gus", &s->card);
249
250 as.freq = s->freq;
251 as.nchannels = 2;
252 as.fmt = AUDIO_FORMAT_S16;
253 as.endianness = AUDIO_HOST_ENDIANNESS;
254
255 s->voice = AUD_open_out (
256 &s->card,
257 NULL,
258 "gus",
259 s,
260 GUS_callback,
261 &as
262 );
263
264 if (!s->voice) {
265 AUD_remove_card (&s->card);
266 error_setg(errp, "No voice");
267 return;
268 }
269
270 s->shift = 2;
271 s->samples = AUD_get_buffer_size_out (s->voice) >> s->shift;
272 s->mixbuf = g_malloc0 (s->samples << s->shift);
273
274 isa_register_portio_list(d, &s->portio_list1, s->port,
275 gus_portio_list1, s, "gus");
276 isa_register_portio_list(d, &s->portio_list2, (s->port + 0x100) & 0xf00,
277 gus_portio_list2, s, "gus");
278
279 k = ISADMA_GET_CLASS(s->isa_dma);
280 k->register_channel(s->isa_dma, s->emu.gusdma, GUS_read_DMA, s);
281 s->emu.himemaddr = s->himem;
282 s->emu.gusdatapos = s->emu.himemaddr + 1024 * 1024 + 32;
283 s->emu.opaque = s;
284 isa_init_irq (d, &s->pic, s->emu.gusirq);
285
286 AUD_set_active_out (s->voice, 1);
287 }
288
289 static Property gus_properties[] = {
290 DEFINE_AUDIO_PROPERTIES(GUSState, card),
291 DEFINE_PROP_UINT32 ("freq", GUSState, freq, 44100),
292 DEFINE_PROP_UINT32 ("iobase", GUSState, port, 0x240),
293 DEFINE_PROP_UINT32 ("irq", GUSState, emu.gusirq, 7),
294 DEFINE_PROP_UINT32 ("dma", GUSState, emu.gusdma, 3),
295 DEFINE_PROP_END_OF_LIST (),
296 };
297
298 static void gus_class_initfn (ObjectClass *klass, void *data)
299 {
300 DeviceClass *dc = DEVICE_CLASS (klass);
301
302 dc->realize = gus_realizefn;
303 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
304 dc->desc = "Gravis Ultrasound GF1";
305 dc->vmsd = &vmstate_gus;
306 device_class_set_props(dc, gus_properties);
307 }
308
309 static const TypeInfo gus_info = {
310 .name = TYPE_GUS,
311 .parent = TYPE_ISA_DEVICE,
312 .instance_size = sizeof (GUSState),
313 .class_init = gus_class_initfn,
314 };
315
316 static void gus_register_types (void)
317 {
318 type_register_static (&gus_info);
319 deprecated_register_soundhw("gus", "Gravis Ultrasound GF1", 1, TYPE_GUS);
320 }
321
322 type_init (gus_register_types)