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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 []) {
malccf4dc462012-02-07 22:11:04 +0400224 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 ()
Juan Quintela709ae102009-12-02 11:49:38 +0100232 }
233};
malc5b5ef0d2008-06-21 17:14:54 +0000234
Richard Hendersond7adb962011-08-15 15:25:26 -0700235static const MemoryRegionPortio gus_portio_list1[] = {
236 {0x000, 1, 1, .write = gus_writeb },
237 {0x000, 1, 2, .write = gus_writew },
238 {0x006, 10, 1, .read = gus_readb, .write = gus_writeb },
239 {0x006, 10, 2, .read = gus_readw, .write = gus_writew },
240 {0x100, 8, 1, .read = gus_readb, .write = gus_writeb },
241 {0x100, 8, 2, .read = gus_readw, .write = gus_writew },
malccf4dc462012-02-07 22:11:04 +0400242 PORTIO_END_OF_LIST (),
Richard Hendersond7adb962011-08-15 15:25:26 -0700243};
244
245static const MemoryRegionPortio gus_portio_list2[] = {
246 {0, 1, 1, .read = gus_readb },
247 {0, 1, 2, .read = gus_readw },
malccf4dc462012-02-07 22:11:04 +0400248 PORTIO_END_OF_LIST (),
Richard Hendersond7adb962011-08-15 15:25:26 -0700249};
250
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200251static int gus_initfn (ISADevice *dev)
balrog423d65f2008-01-14 22:09:11 +0000252{
malc8acbc9b2011-10-09 19:04:16 +0400253 GUSState *s = DO_UPCAST (GUSState, dev, dev);
malc1ea879e2008-12-03 22:48:44 +0000254 struct audsettings as;
balrog423d65f2008-01-14 22:09:11 +0000255
malc1a7dafc2009-05-14 03:11:35 +0400256 AUD_register_card ("gus", &s->card);
balrog423d65f2008-01-14 22:09:11 +0000257
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200258 as.freq = s->freq;
balrog423d65f2008-01-14 22:09:11 +0000259 as.nchannels = 2;
260 as.fmt = AUD_FMT_S16;
261 as.endianness = GUS_ENDIANNESS;
262
263 s->voice = AUD_open_out (
264 &s->card,
265 NULL,
266 "gus",
267 s,
268 GUS_callback,
269 &as
270 );
271
272 if (!s->voice) {
273 AUD_remove_card (&s->card);
balrog423d65f2008-01-14 22:09:11 +0000274 return -1;
275 }
276
277 s->shift = 2;
278 s->samples = AUD_get_buffer_size_out (s->voice) >> s->shift;
Anthony Liguori7267c092011-08-20 22:09:37 -0500279 s->mixbuf = g_malloc0 (s->samples << s->shift);
balrog423d65f2008-01-14 22:09:11 +0000280
Richard Hendersond7adb962011-08-15 15:25:26 -0700281 isa_register_portio_list (dev, s->port, gus_portio_list1, s, "gus");
282 isa_register_portio_list (dev, (s->port + 0x100) & 0xf00,
283 gus_portio_list2, s, "gus");
balrog423d65f2008-01-14 22:09:11 +0000284
malca5e8e462009-09-10 19:59:41 +0400285 DMA_register_channel (s->emu.gusdma, GUS_read_DMA, s);
balrog423d65f2008-01-14 22:09:11 +0000286 s->emu.himemaddr = s->himem;
287 s->emu.gusdatapos = s->emu.himemaddr + 1024 * 1024 + 32;
288 s->emu.opaque = s;
malca5e8e462009-09-10 19:59:41 +0400289 isa_init_irq (dev, &s->pic, s->emu.gusirq);
balrog423d65f2008-01-14 22:09:11 +0000290
291 AUD_set_active_out (s->voice, 1);
malc5b5ef0d2008-06-21 17:14:54 +0000292
balrog423d65f2008-01-14 22:09:11 +0000293 return 0;
294}
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200295
Hervé Poussineau4a0f0312011-12-15 22:10:01 +0100296int GUS_init (ISABus *bus)
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200297{
Hervé Poussineau48a18b32011-12-15 22:09:51 +0100298 isa_create_simple (bus, "gus");
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200299 return 0;
300}
301
Anthony Liguori39bffca2011-12-07 21:34:16 -0600302static Property gus_properties[] = {
303 DEFINE_PROP_UINT32 ("freq", GUSState, freq, 44100),
304 DEFINE_PROP_HEX32 ("iobase", GUSState, port, 0x240),
305 DEFINE_PROP_UINT32 ("irq", GUSState, emu.gusirq, 7),
306 DEFINE_PROP_UINT32 ("dma", GUSState, emu.gusdma, 3),
307 DEFINE_PROP_END_OF_LIST (),
308};
309
malccf4dc462012-02-07 22:11:04 +0400310static void gus_class_initfn (ObjectClass *klass, void *data)
Anthony Liguori8f04ee02011-12-04 11:52:49 -0600311{
malccf4dc462012-02-07 22:11:04 +0400312 DeviceClass *dc = DEVICE_CLASS (klass);
313 ISADeviceClass *ic = ISA_DEVICE_CLASS (klass);
Anthony Liguori8f04ee02011-12-04 11:52:49 -0600314 ic->init = gus_initfn;
Anthony Liguori39bffca2011-12-07 21:34:16 -0600315 dc->desc = "Gravis Ultrasound GF1";
316 dc->vmsd = &vmstate_gus;
317 dc->props = gus_properties;
Anthony Liguori8f04ee02011-12-04 11:52:49 -0600318}
319
Anthony Liguori39bffca2011-12-07 21:34:16 -0600320static TypeInfo gus_info = {
321 .name = "gus",
322 .parent = TYPE_ISA_DEVICE,
323 .instance_size = sizeof (GUSState),
324 .class_init = gus_class_initfn,
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200325};
326
Andreas Färber83f7d432012-02-09 15:20:55 +0100327static void gus_register_types (void)
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200328{
malccf4dc462012-02-07 22:11:04 +0400329 type_register_static (&gus_info);
Gerd Hoffmann9df34392009-09-10 11:43:32 +0200330}
Andreas Färber83f7d432012-02-09 15:20:55 +0100331
332type_init (gus_register_types)