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balrog423d65f2008-01-14 22:09:11 +00001/*
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 */
24#include "hw.h"
25#include "audiodev.h"
26#include "audio/audio.h"
27#include "isa.h"
28#include "gusemu.h"
29#include "gustate.h"
30
31#define dolog(...) AUD_log ("audio", __VA_ARGS__)
32#ifdef DEBUG
33#define ldebug(...) dolog (__VA_ARGS__)
34#else
35#define ldebug(...)
36#endif
37
Juan Quintelae2542fe2009-07-27 16:13:06 +020038#ifdef HOST_WORDS_BIGENDIAN
balrog423d65f2008-01-14 22:09:11 +000039#define GUS_ENDIANNESS 1
40#else
41#define GUS_ENDIANNESS 0
42#endif
43
44#define IO_READ_PROTO(name) \
malc371bc572008-12-11 00:14:28 +000045 static uint32_t name (void *opaque, uint32_t nport)
balrog423d65f2008-01-14 22:09:11 +000046#define IO_WRITE_PROTO(name) \
malc371bc572008-12-11 00:14:28 +000047 static void name (void *opaque, uint32_t nport, uint32_t val)
balrog423d65f2008-01-14 22:09:11 +000048
balrog423d65f2008-01-14 22:09:11 +000049typedef struct GUSState {
Gerd Hoffmann9df34392009-09-10 11:43:32 +020050 ISADevice dev;
balrog423d65f2008-01-14 22:09:11 +000051 GUSEmuState emu;
52 QEMUSoundCard card;
Gerd Hoffmann9df34392009-09-10 11:43:32 +020053 uint32_t freq;
54 uint32_t port;
balrog423d65f2008-01-14 22:09:11 +000055 int pos, left, shift, irqs;
malc731ba0c2008-06-08 01:42:47 +000056 GUSsample *mixbuf;
balrog423d65f2008-01-14 22:09:11 +000057 uint8_t himem[1024 * 1024 + 32 + 4096];
58 int samples;
59 SWVoiceOut *voice;
60 int64_t last_ticks;
Gerd Hoffmann9df34392009-09-10 11:43:32 +020061 qemu_irq pic;
balrog423d65f2008-01-14 22:09:11 +000062} GUSState;
63
64IO_READ_PROTO (gus_readb)
65{
66 GUSState *s = opaque;
67
68 return gus_read (&s->emu, nport, 1);
69}
70
71IO_READ_PROTO (gus_readw)
72{
73 GUSState *s = opaque;
74
75 return gus_read (&s->emu, nport, 2);
76}
77
78IO_WRITE_PROTO (gus_writeb)
79{
80 GUSState *s = opaque;
81
82 gus_write (&s->emu, nport, 1, val);
83}
84
85IO_WRITE_PROTO (gus_writew)
86{
87 GUSState *s = opaque;
88
89 gus_write (&s->emu, nport, 2, val);
90}
91
92static int write_audio (GUSState *s, int samples)
93{
94 int net = 0;
95 int pos = s->pos;
96
97 while (samples) {
98 int nbytes, wbytes, wsampl;
99
100 nbytes = samples << s->shift;
101 wbytes = AUD_write (
102 s->voice,
103 s->mixbuf + (pos << (s->shift - 1)),
104 nbytes
105 );
106
107 if (wbytes) {
108 wsampl = wbytes >> s->shift;
109
110 samples -= wsampl;
111 pos = (pos + wsampl) % s->samples;
112
113 net += wsampl;
114 }
115 else {
116 break;
117 }
118 }
119
120 return net;
121}
122
123static void GUS_callback (void *opaque, int free)
124{
125 int samples, to_play, net = 0;
126 GUSState *s = opaque;
127
128 samples = free >> s->shift;
129 to_play = audio_MIN (samples, s->left);
130
131 while (to_play) {
132 int written = write_audio (s, to_play);
133
134 if (!written) {
135 goto reset;
136 }
137
138 s->left -= written;
139 to_play -= written;
140 samples -= written;
141 net += written;
142 }
143
144 samples = audio_MIN (samples, s->samples);
145 if (samples) {
146 gus_mixvoices (&s->emu, s->freq, samples, s->mixbuf);
147
148 while (samples) {
149 int written = write_audio (s, samples);
150 if (!written) {
151 break;
152 }
153 samples -= written;
154 net += written;
155 }
156 }
157 s->left = samples;
158
malc4f4cc0e2009-09-18 08:16:03 +0400159 reset:
160 gus_irqgen (&s->emu, muldiv64 (net, 1000000, s->freq));
balrog423d65f2008-01-14 22:09:11 +0000161}
162
163int GUS_irqrequest (GUSEmuState *emu, int hwirq, int n)
164{
165 GUSState *s = emu->opaque;
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200166 /* qemu_irq_lower (s->pic); */
167 qemu_irq_raise (s->pic);
balrog423d65f2008-01-14 22:09:11 +0000168 s->irqs += n;
169 ldebug ("irqrequest %d %d %d\n", hwirq, n, s->irqs);
170 return n;
171}
172
173void GUS_irqclear (GUSEmuState *emu, int hwirq)
174{
175 GUSState *s = emu->opaque;
176 ldebug ("irqclear %d %d\n", hwirq, s->irqs);
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200177 qemu_irq_lower (s->pic);
balrog423d65f2008-01-14 22:09:11 +0000178 s->irqs -= 1;
179#ifdef IRQ_STORM
180 if (s->irqs > 0) {
181 qemu_irq_raise (s->pic[hwirq]);
182 }
183#endif
184}
185
186void GUS_dmarequest (GUSEmuState *der)
187{
188 /* GUSState *s = (GUSState *) der; */
189 ldebug ("dma request %d\n", der->gusdma);
190 DMA_hold_DREQ (der->gusdma);
191}
192
malc371bc572008-12-11 00:14:28 +0000193static int GUS_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
balrog423d65f2008-01-14 22:09:11 +0000194{
195 GUSState *s = opaque;
malc731ba0c2008-06-08 01:42:47 +0000196 char tmpbuf[4096];
balrog423d65f2008-01-14 22:09:11 +0000197 int pos = dma_pos, mode, left = dma_len - dma_pos;
198
199 ldebug ("read DMA %#x %d\n", dma_pos, dma_len);
200 mode = DMA_get_channel_mode (s->emu.gusdma);
201 while (left) {
202 int to_copy = audio_MIN ((size_t) left, sizeof (tmpbuf));
203 int copied;
204
205 ldebug ("left=%d to_copy=%d pos=%d\n", left, to_copy, pos);
206 copied = DMA_read_memory (nchan, tmpbuf, pos, to_copy);
207 gus_dma_transferdata (&s->emu, tmpbuf, copied, left == copied);
208 left -= copied;
209 pos += copied;
210 }
211
212 if (0 == ((mode >> 4) & 1)) {
213 DMA_release_DREQ (s->emu.gusdma);
214 }
215 return dma_len;
216}
217
Juan Quintela709ae102009-12-02 11:49:38 +0100218static const VMStateDescription vmstate_gus = {
219 .name = "gus",
220 .version_id = 2,
221 .minimum_version_id = 2,
222 .minimum_version_id_old = 2,
223 .fields = (VMStateField []) {
224 VMSTATE_INT32(pos, GUSState),
225 VMSTATE_INT32(left, GUSState),
226 VMSTATE_INT32(shift, GUSState),
227 VMSTATE_INT32(irqs, GUSState),
228 VMSTATE_INT32(samples, GUSState),
229 VMSTATE_INT64(last_ticks, GUSState),
230 VMSTATE_BUFFER(himem, GUSState),
231 VMSTATE_END_OF_LIST()
232 }
233};
malc5b5ef0d2008-06-21 17:14:54 +0000234
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200235static int gus_initfn (ISADevice *dev)
balrog423d65f2008-01-14 22:09:11 +0000236{
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200237 GUSState *s = DO_UPCAST(GUSState, dev, dev);
malc1ea879e2008-12-03 22:48:44 +0000238 struct audsettings as;
balrog423d65f2008-01-14 22:09:11 +0000239
malc1a7dafc2009-05-14 03:11:35 +0400240 AUD_register_card ("gus", &s->card);
balrog423d65f2008-01-14 22:09:11 +0000241
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200242 as.freq = s->freq;
balrog423d65f2008-01-14 22:09:11 +0000243 as.nchannels = 2;
244 as.fmt = AUD_FMT_S16;
245 as.endianness = GUS_ENDIANNESS;
246
247 s->voice = AUD_open_out (
248 &s->card,
249 NULL,
250 "gus",
251 s,
252 GUS_callback,
253 &as
254 );
255
256 if (!s->voice) {
257 AUD_remove_card (&s->card);
balrog423d65f2008-01-14 22:09:11 +0000258 return -1;
259 }
260
261 s->shift = 2;
262 s->samples = AUD_get_buffer_size_out (s->voice) >> s->shift;
263 s->mixbuf = qemu_mallocz (s->samples << s->shift);
balrog423d65f2008-01-14 22:09:11 +0000264
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200265 register_ioport_write (s->port, 1, 1, gus_writeb, s);
266 register_ioport_write (s->port, 1, 2, gus_writew, s);
Gleb Natapovdee41d52010-12-08 13:34:56 +0200267 isa_init_ioport_range(dev, s->port, 2);
balrog423d65f2008-01-14 22:09:11 +0000268
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200269 register_ioport_read ((s->port + 0x100) & 0xf00, 1, 1, gus_readb, s);
270 register_ioport_read ((s->port + 0x100) & 0xf00, 1, 2, gus_readw, s);
Gleb Natapovdee41d52010-12-08 13:34:56 +0200271 isa_init_ioport_range(dev, (s->port + 0x100) & 0xf00, 2);
balrog423d65f2008-01-14 22:09:11 +0000272
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200273 register_ioport_write (s->port + 6, 10, 1, gus_writeb, s);
274 register_ioport_write (s->port + 6, 10, 2, gus_writew, s);
275 register_ioport_read (s->port + 6, 10, 1, gus_readb, s);
276 register_ioport_read (s->port + 6, 10, 2, gus_readw, s);
Gleb Natapovdee41d52010-12-08 13:34:56 +0200277 isa_init_ioport_range(dev, s->port + 6, 10);
balrog423d65f2008-01-14 22:09:11 +0000278
279
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200280 register_ioport_write (s->port + 0x100, 8, 1, gus_writeb, s);
281 register_ioport_write (s->port + 0x100, 8, 2, gus_writew, s);
282 register_ioport_read (s->port + 0x100, 8, 1, gus_readb, s);
283 register_ioport_read (s->port + 0x100, 8, 2, gus_readw, s);
Gleb Natapovdee41d52010-12-08 13:34:56 +0200284 isa_init_ioport_range(dev, s->port + 0x100, 8);
balrog423d65f2008-01-14 22:09:11 +0000285
malca5e8e462009-09-10 19:59:41 +0400286 DMA_register_channel (s->emu.gusdma, GUS_read_DMA, s);
balrog423d65f2008-01-14 22:09:11 +0000287 s->emu.himemaddr = s->himem;
288 s->emu.gusdatapos = s->emu.himemaddr + 1024 * 1024 + 32;
289 s->emu.opaque = s;
malca5e8e462009-09-10 19:59:41 +0400290 isa_init_irq (dev, &s->pic, s->emu.gusirq);
balrog423d65f2008-01-14 22:09:11 +0000291
292 AUD_set_active_out (s->voice, 1);
malc5b5ef0d2008-06-21 17:14:54 +0000293
balrog423d65f2008-01-14 22:09:11 +0000294 return 0;
295}
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200296
297int GUS_init (qemu_irq *pic)
298{
malca5e8e462009-09-10 19:59:41 +0400299 isa_create_simple ("gus");
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200300 return 0;
301}
302
303static ISADeviceInfo gus_info = {
304 .qdev.name = "gus",
malca5e8e462009-09-10 19:59:41 +0400305 .qdev.desc = "Gravis Ultrasound GF1",
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200306 .qdev.size = sizeof (GUSState),
Juan Quintelabe73cfe2009-12-02 12:36:46 +0100307 .qdev.vmsd = &vmstate_gus,
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200308 .init = gus_initfn,
309 .qdev.props = (Property[]) {
310 DEFINE_PROP_UINT32 ("freq", GUSState, freq, 44100),
311 DEFINE_PROP_HEX32 ("iobase", GUSState, port, 0x240),
312 DEFINE_PROP_UINT32 ("irq", GUSState, emu.gusirq, 7),
313 DEFINE_PROP_UINT32 ("dma", GUSState, emu.gusdma, 3),
314 DEFINE_PROP_END_OF_LIST (),
315 },
316};
317
malca5e8e462009-09-10 19:59:41 +0400318static void gus_register (void)
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200319{
malca5e8e462009-09-10 19:59:41 +0400320 isa_qdev_register (&gus_info);
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200321}
malca5e8e462009-09-10 19:59:41 +0400322device_init (gus_register)