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423d65f4
AZ
1/*
2 * QEMU Proxy for Gravis Ultrasound GF1 emulation by Tibor "TS" Schütz
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 */
6086a565 24#include "qemu/osdep.h"
da34e65c 25#include "qapi/error.h"
83c9f4ca 26#include "hw/hw.h"
8a824e4d 27#include "hw/audio/soundhw.h"
423d65f4 28#include "audio/audio.h"
0d09e41a 29#include "hw/isa/isa.h"
47b43a1f
PB
30#include "gusemu.h"
31#include "gustate.h"
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32
33#define dolog(...) AUD_log ("audio", __VA_ARGS__)
34#ifdef DEBUG
35#define ldebug(...) dolog (__VA_ARGS__)
36#else
37#define ldebug(...)
38#endif
39
e2542fe2 40#ifdef HOST_WORDS_BIGENDIAN
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41#define GUS_ENDIANNESS 1
42#else
43#define GUS_ENDIANNESS 0
44#endif
45
11c7549d
AF
46#define TYPE_GUS "gus"
47#define GUS(obj) OBJECT_CHECK (GUSState, (obj), TYPE_GUS)
48
423d65f4 49typedef struct GUSState {
9df34396 50 ISADevice dev;
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AZ
51 GUSEmuState emu;
52 QEMUSoundCard card;
9df34396
GH
53 uint32_t freq;
54 uint32_t port;
423d65f4 55 int pos, left, shift, irqs;
135f5ae1 56 int16_t *mixbuf;
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AZ
57 uint8_t himem[1024 * 1024 + 32 + 4096];
58 int samples;
59 SWVoiceOut *voice;
60 int64_t last_ticks;
9df34396 61 qemu_irq pic;
467be5f2 62 IsaDma *isa_dma;
e305a165
MAL
63 PortioList portio_list1;
64 PortioList portio_list2;
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65} GUSState;
66
8307c294 67static uint32_t gus_readb(void *opaque, uint32_t nport)
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AZ
68{
69 GUSState *s = opaque;
70
71 return gus_read (&s->emu, nport, 1);
72}
73
8307c294 74static void gus_writeb(void *opaque, uint32_t nport, uint32_t val)
423d65f4
AZ
75{
76 GUSState *s = opaque;
77
78 gus_write (&s->emu, nport, 1, val);
79}
80
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AZ
81static int write_audio (GUSState *s, int samples)
82{
83 int net = 0;
84 int pos = s->pos;
85
86 while (samples) {
87 int nbytes, wbytes, wsampl;
88
89 nbytes = samples << s->shift;
90 wbytes = AUD_write (
91 s->voice,
92 s->mixbuf + (pos << (s->shift - 1)),
93 nbytes
94 );
95
96 if (wbytes) {
97 wsampl = wbytes >> s->shift;
98
99 samples -= wsampl;
100 pos = (pos + wsampl) % s->samples;
101
102 net += wsampl;
103 }
104 else {
105 break;
106 }
107 }
108
109 return net;
110}
111
112static void GUS_callback (void *opaque, int free)
113{
114 int samples, to_play, net = 0;
115 GUSState *s = opaque;
116
117 samples = free >> s->shift;
118 to_play = audio_MIN (samples, s->left);
119
120 while (to_play) {
121 int written = write_audio (s, to_play);
122
123 if (!written) {
124 goto reset;
125 }
126
127 s->left -= written;
128 to_play -= written;
129 samples -= written;
130 net += written;
131 }
132
133 samples = audio_MIN (samples, s->samples);
134 if (samples) {
135 gus_mixvoices (&s->emu, s->freq, samples, s->mixbuf);
136
137 while (samples) {
138 int written = write_audio (s, samples);
139 if (!written) {
140 break;
141 }
142 samples -= written;
143 net += written;
144 }
145 }
146 s->left = samples;
147
4f4cc0ef 148 reset:
c00dc675 149 gus_irqgen (&s->emu, (uint64_t)net * 1000000 / s->freq);
423d65f4
AZ
150}
151
152int GUS_irqrequest (GUSEmuState *emu, int hwirq, int n)
153{
154 GUSState *s = emu->opaque;
9df34396
GH
155 /* qemu_irq_lower (s->pic); */
156 qemu_irq_raise (s->pic);
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157 s->irqs += n;
158 ldebug ("irqrequest %d %d %d\n", hwirq, n, s->irqs);
159 return n;
160}
161
162void GUS_irqclear (GUSEmuState *emu, int hwirq)
163{
164 GUSState *s = emu->opaque;
165 ldebug ("irqclear %d %d\n", hwirq, s->irqs);
9df34396 166 qemu_irq_lower (s->pic);
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167 s->irqs -= 1;
168#ifdef IRQ_STORM
169 if (s->irqs > 0) {
170 qemu_irq_raise (s->pic[hwirq]);
171 }
172#endif
173}
174
467be5f2 175void GUS_dmarequest (GUSEmuState *emu)
423d65f4 176{
467be5f2
HP
177 GUSState *s = emu->opaque;
178 IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma);
423d65f4 179 ldebug ("dma request %d\n", der->gusdma);
467be5f2 180 k->hold_DREQ(s->isa_dma, s->emu.gusdma);
423d65f4
AZ
181}
182
371bc573 183static int GUS_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
423d65f4
AZ
184{
185 GUSState *s = opaque;
467be5f2 186 IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma);
731ba0ce 187 char tmpbuf[4096];
423d65f4
AZ
188 int pos = dma_pos, mode, left = dma_len - dma_pos;
189
190 ldebug ("read DMA %#x %d\n", dma_pos, dma_len);
467be5f2 191 mode = k->has_autoinitialization(s->isa_dma, s->emu.gusdma);
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AZ
192 while (left) {
193 int to_copy = audio_MIN ((size_t) left, sizeof (tmpbuf));
194 int copied;
195
196 ldebug ("left=%d to_copy=%d pos=%d\n", left, to_copy, pos);
467be5f2 197 copied = k->read_memory(s->isa_dma, nchan, tmpbuf, pos, to_copy);
423d65f4
AZ
198 gus_dma_transferdata (&s->emu, tmpbuf, copied, left == copied);
199 left -= copied;
200 pos += copied;
201 }
202
2ab5bf67 203 if (((mode >> 4) & 1) == 0) {
467be5f2 204 k->release_DREQ(s->isa_dma, s->emu.gusdma);
423d65f4
AZ
205 }
206 return dma_len;
207}
208
709ae102
JQ
209static const VMStateDescription vmstate_gus = {
210 .name = "gus",
211 .version_id = 2,
212 .minimum_version_id = 2,
d49805ae 213 .fields = (VMStateField[]) {
cf4dc461 214 VMSTATE_INT32 (pos, GUSState),
215 VMSTATE_INT32 (left, GUSState),
216 VMSTATE_INT32 (shift, GUSState),
217 VMSTATE_INT32 (irqs, GUSState),
218 VMSTATE_INT32 (samples, GUSState),
219 VMSTATE_INT64 (last_ticks, GUSState),
220 VMSTATE_BUFFER (himem, GUSState),
221 VMSTATE_END_OF_LIST ()
709ae102
JQ
222 }
223};
5b5ef0db 224
d7adb96f
RH
225static const MemoryRegionPortio gus_portio_list1[] = {
226 {0x000, 1, 1, .write = gus_writeb },
d7adb96f 227 {0x006, 10, 1, .read = gus_readb, .write = gus_writeb },
d7adb96f 228 {0x100, 8, 1, .read = gus_readb, .write = gus_writeb },
cf4dc461 229 PORTIO_END_OF_LIST (),
d7adb96f
RH
230};
231
232static const MemoryRegionPortio gus_portio_list2[] = {
54da54e5 233 {0, 2, 1, .read = gus_readb },
cf4dc461 234 PORTIO_END_OF_LIST (),
d7adb96f
RH
235};
236
db895a1e 237static void gus_realizefn (DeviceState *dev, Error **errp)
423d65f4 238{
db895a1e 239 ISADevice *d = ISA_DEVICE(dev);
11c7549d 240 GUSState *s = GUS (dev);
467be5f2 241 IsaDmaClass *k;
1ea879e5 242 struct audsettings as;
423d65f4 243
c9073238
TH
244 s->isa_dma = isa_get_dma(isa_bus_from_device(d), s->emu.gusdma);
245 if (!s->isa_dma) {
246 error_setg(errp, "ISA controller does not support DMA");
247 return;
248 }
249
1a7dafce 250 AUD_register_card ("gus", &s->card);
423d65f4 251
9df34396 252 as.freq = s->freq;
423d65f4 253 as.nchannels = 2;
85bc5852 254 as.fmt = AUDIO_FORMAT_S16;
423d65f4
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255 as.endianness = GUS_ENDIANNESS;
256
257 s->voice = AUD_open_out (
258 &s->card,
259 NULL,
260 "gus",
261 s,
262 GUS_callback,
263 &as
264 );
265
266 if (!s->voice) {
267 AUD_remove_card (&s->card);
db895a1e
AF
268 error_setg(errp, "No voice");
269 return;
423d65f4
AZ
270 }
271
272 s->shift = 2;
273 s->samples = AUD_get_buffer_size_out (s->voice) >> s->shift;
7267c094 274 s->mixbuf = g_malloc0 (s->samples << s->shift);
423d65f4 275
e305a165
MAL
276 isa_register_portio_list(d, &s->portio_list1, s->port,
277 gus_portio_list1, s, "gus");
278 isa_register_portio_list(d, &s->portio_list2, (s->port + 0x100) & 0xf00,
279 gus_portio_list2, s, "gus");
423d65f4 280
467be5f2
HP
281 k = ISADMA_GET_CLASS(s->isa_dma);
282 k->register_channel(s->isa_dma, s->emu.gusdma, GUS_read_DMA, s);
423d65f4
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283 s->emu.himemaddr = s->himem;
284 s->emu.gusdatapos = s->emu.himemaddr + 1024 * 1024 + 32;
285 s->emu.opaque = s;
db895a1e 286 isa_init_irq (d, &s->pic, s->emu.gusirq);
423d65f4
AZ
287
288 AUD_set_active_out (s->voice, 1);
423d65f4 289}
9df34396 290
36cd6f6f 291static int GUS_init (ISABus *bus)
9df34396 292{
11c7549d 293 isa_create_simple (bus, TYPE_GUS);
9df34396
GH
294 return 0;
295}
296
39bffca2
AL
297static Property gus_properties[] = {
298 DEFINE_PROP_UINT32 ("freq", GUSState, freq, 44100),
c7bcc85d 299 DEFINE_PROP_UINT32 ("iobase", GUSState, port, 0x240),
39bffca2
AL
300 DEFINE_PROP_UINT32 ("irq", GUSState, emu.gusirq, 7),
301 DEFINE_PROP_UINT32 ("dma", GUSState, emu.gusdma, 3),
302 DEFINE_PROP_END_OF_LIST (),
303};
304
cf4dc461 305static void gus_class_initfn (ObjectClass *klass, void *data)
8f04ee08 306{
cf4dc461 307 DeviceClass *dc = DEVICE_CLASS (klass);
db895a1e
AF
308
309 dc->realize = gus_realizefn;
125ee0ed 310 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
39bffca2
AL
311 dc->desc = "Gravis Ultrasound GF1";
312 dc->vmsd = &vmstate_gus;
313 dc->props = gus_properties;
8f04ee08
AL
314}
315
8c43a6f0 316static const TypeInfo gus_info = {
11c7549d 317 .name = TYPE_GUS,
39bffca2
AL
318 .parent = TYPE_ISA_DEVICE,
319 .instance_size = sizeof (GUSState),
320 .class_init = gus_class_initfn,
9df34396
GH
321};
322
83f7d43a 323static void gus_register_types (void)
9df34396 324{
cf4dc461 325 type_register_static (&gus_info);
36cd6f6f 326 isa_register_soundhw("gus", "Gravis Ultrasound GF1", GUS_init);
9df34396 327}
83f7d43a
AF
328
329type_init (gus_register_types)