DevSB16.cpp@ 58600

Last change on this file since 58600 was 58600, checked in by vboxsync, 9 years ago
Audio: Introduced reference counting for guest audio streams; this should prevent that the audio connector interface is destroying streams which still are being used by other parties, e.g. the audio mixer (bugref:8054).
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 66.9 KB

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1	/* $Id: DevSB16.cpp 58600 2015-11-06 12:26:32Z vboxsync $ */
2	/** @file
3	* DevSB16 - VBox SB16 Audio Controller.
4	*
5	* @todo hiccups on NT4 and Win98.
6	*/
7
8	/*
9	* Copyright (C) 2015 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	* --------------------------------------------------------------------
19	*
20	* This code is based on: sb16.c from QEMU AUDIO subsystem (r3917).
21	* QEMU Soundblaster 16 emulation
22	*
23	* Copyright (c) 2003-2005 Vassili Karpov (malc)
24	*
25	* Permission is hereby granted, free of charge, to any person obtaining a copy
26	* of this software and associated documentation files (the "Software"), to deal
27	* in the Software without restriction, including without limitation the rights
28	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
29	* copies of the Software, and to permit persons to whom the Software is
30	* furnished to do so, subject to the following conditions:
31	*
32	* The above copyright notice and this permission notice shall be included in
33	* all copies or substantial portions of the Software.
34	*
35	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
36	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
37	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
38	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
39	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
40	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
41	* THE SOFTWARE.
42	*/
43	#define LOG_GROUP LOG_GROUP_DEV_SB16
44	#include <VBox/log.h>
45	#include <iprt/assert.h>
46	#ifdef IN_RING3
47	# include <iprt/mem.h>
48	# include <iprt/string.h>
49	# include <iprt/uuid.h>
50	#endif
51
52	#include <VBox/vmm/pdmdev.h>
53	#include <VBox/vmm/pdmaudioifs.h>
54
55	#include "VBoxDD.h"
56
57	#include "AudioMixer.h"
58
59	/** Current saved state version. */
60	#define SB16_SAVE_STATE_VERSION 2
61	/** The version used in VirtualBox version 3.0 and earlier. This didn't include the config dump. */
62	#define SB16_SAVE_STATE_VERSION_VBOX_30 1
63
64	#define IO_READ_PROTO(name) \
65	DECLCALLBACK(int) name (PPDMDEVINS pDevIns, void *opaque, \
66	RTIOPORT nport, uint32_t *pu32, unsigned cb)
67
68	#define IO_WRITE_PROTO(name) \
69	DECLCALLBACK(int) name (PPDMDEVINS pDevIns, void *opaque, \
70	RTIOPORT nport, uint32_t val, unsigned cb)
71
72	static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992.";
73
74	typedef struct SB16OUTPUTSTREAM
75	{
76	/** PCM output stream. */
77	R3PTRTYPE(PPDMAUDIOGSTSTRMOUT) pStrmOut;
78	/** Mixer handle for output stream. */
79	R3PTRTYPE(PAUDMIXSTREAM) phStrmOut;
80	} SB16OUTPUTSTREAM, *PSB16OUTPUTSTREAM;
81
82	/**
83	* Struct for maintaining a host backend driver.
84	*/
85	typedef struct SB16STATE *PSB16STATE;
86	typedef struct SB16DRIVER
87	{
88	union
89	{
90	/** Node for storing this driver in our device driver
91	* list of SB16STATE. */
92	RTLISTNODE Node;
93	struct
94	{
95	R3PTRTYPE(void *) dummy1;
96	R3PTRTYPE(void *) dummy2;
97	} dummy;
98	};
99
100	/** Pointer to SB16 controller (state). */
101	R3PTRTYPE(PSB16STATE) pSB16State;
102	/** Driver flags. */
103	PDMAUDIODRVFLAGS Flags;
104	uint32_t PaddingFlags;
105	/** LUN # to which this driver has been assigned. */
106	uint8_t uLUN;
107	uint8_t Padding[5];
108	/** Audio connector interface to the underlying
109	* host backend. */
110	R3PTRTYPE(PPDMIAUDIOCONNECTOR) pConnector;
111	/** Stream for output. */
112	SB16OUTPUTSTREAM Out;
113	} SB16DRIVER, *PSB16DRIVER;
114
115	typedef struct SB16STATE
116	{
117	#ifdef VBOX
118	/** Pointer to the device instance. */
119	PPDMDEVINSR3 pDevIns;
120	/** Pointer to the connector of the attached audio driver. */
121	PPDMIAUDIOCONNECTOR pDrv;
122	int irqCfg;
123	int dmaCfg;
124	int hdmaCfg;
125	int portCfg;
126	int verCfg;
127	#endif
128	int irq;
129	int dma;
130	int hdma;
131	int port;
132	int ver;
133
134	int in_index;
135	int out_data_len;
136	int fmt_stereo;
137	int fmt_signed;
138	int fmt_bits;
139	PDMAUDIOFMT fmt;
140	int dma_auto;
141	int block_size;
142	int fifo;
143	int freq;
144	int time_const;
145	int speaker;
146	int needed_bytes;
147	int cmd;
148	int use_hdma;
149	int highspeed;
150	int can_write; /** @todo Value never gets 0? */
151
152	int v2x6;
153
154	uint8_t csp_param;
155	uint8_t csp_value;
156	uint8_t csp_mode;
157	uint8_t csp_regs[256];
158	uint8_t csp_index;
159	uint8_t csp_reg83[4];
160	int csp_reg83r;
161	int csp_reg83w;
162
163	uint8_t in2_data[10];
164	uint8_t out_data[50];
165	uint8_t test_reg;
166	uint8_t last_read_byte;
167	int nzero;
168
169	int left_till_irq; /** Note: Can be < 0. */
170
171	int dma_running;
172	int bytes_per_second;
173	int align;
174
175	RTLISTANCHOR lstDrv;
176	/** The device' software mixer. */
177	R3PTRTYPE(PAUDIOMIXER) pMixer;
178	/** Audio sink for PCM output. */
179	R3PTRTYPE(PAUDMIXSINK) pSinkOutput;
180	/** The emulation timer for handling I/O of the attached LUN drivers. */
181	PTMTIMERR3 pTimerIO;
182	/** Timer ticks for handling the LUN drivers. */
183	uint64_t uTicksIO;
184
185	PTMTIMER pTimerIRQ;
186	PPDMIBASE pDrvBase;
187	/** LUN\#0: Base interface. */
188	PDMIBASE IBase;
189
190	/* mixer state */
191	int mixer_nreg;
192	uint8_t mixer_regs[256];
193	} SB16STATE, *PSB16STATE;
194
195	static int sb16OpenOut(PSB16STATE pThis, PPDMAUDIOSTREAMCFG pCfg);
196
197	/**
198	* Attach command.
199	*
200	* This is called to let the device attach to a driver for a specified LUN
201	* during runtime. This is not called during VM construction, the device
202	* constructor have to attach to all the available drivers.
203	*
204	* @returns VBox status code.
205	* @param pDevIns The device instance.
206	* @param uLUN The logical unit which is being detached.
207	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
208	*/
209	static DECLCALLBACK(int) sb16Attach(PPDMDEVINS pDevIns, unsigned uLUN, uint32_t fFlags)
210	{
211	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
212
213	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
214	("AC'97 device does not support hotplugging\n"),
215	VERR_INVALID_PARAMETER);
216
217	/*
218	* Attach driver.
219	*/
220	char *pszDesc = NULL;
221	if (RTStrAPrintf(&pszDesc, "Audio driver port (SB16) for LUN #%u", uLUN) <= 0)
222	AssertMsgReturn(pszDesc,
223	("Not enough memory for SB16 driver port description of LUN #%u\n", uLUN),
224	VERR_NO_MEMORY);
225
226	int rc = PDMDevHlpDriverAttach(pDevIns, uLUN,
227	&pThis->IBase, &pThis->pDrvBase, pszDesc);
228	if (RT_SUCCESS(rc))
229	{
230	PSB16DRIVER pDrv = (PSB16DRIVER)RTMemAllocZ(sizeof(SB16DRIVER));
231	if (pDrv)
232	{
233	pDrv->pConnector = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMIAUDIOCONNECTOR);
234	AssertMsg(pDrv->pConnector != NULL,
235	("Configuration error: LUN #%u has no host audio interface, rc=%Rrc\n",
236	uLUN, rc));
237	pDrv->pSB16State = pThis;
238	pDrv->uLUN = uLUN;
239
240	/*
241	* For now we always set the driver at LUN 0 as our primary
242	* host backend. This might change in the future.
243	*/
244	if (pDrv->uLUN == 0)
245	pDrv->Flags \|= PDMAUDIODRVFLAG_PRIMARY;
246
247	LogFunc(("LUN#%RU8: pCon=%p, drvFlags=0x%x\n", uLUN, pDrv->pConnector, pDrv->Flags));
248
249	/* Attach to driver list. */
250	RTListAppend(&pThis->lstDrv, &pDrv->Node);
251	}
252	else
253	rc = VERR_NO_MEMORY;
254	}
255	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
256	{
257	LogFunc(("No attached driver for LUN #%u\n", uLUN));
258	}
259	else if (RT_FAILURE(rc))
260	AssertMsgFailed(("Failed to attach SB16 LUN #%u (\"%s\"), rc=%Rrc\n",
261	uLUN, pszDesc, rc));
262
263	RTStrFree(pszDesc);
264
265	LogFunc(("iLUN=%u, fFlags=0x%x, rc=%Rrc\n", uLUN, fFlags, rc));
266	return rc;
267	}
268
269	static void sb16AudioCallback(void *pvContext, uint32_t cbFree);
270
271	static int magic_of_irq(int irq)
272	{
273	switch (irq)
274	{
275	case 5:
276	return 2;
277	case 7:
278	return 4;
279	case 9:
280	return 1;
281	case 10:
282	return 8;
283	default:
284	break;
285	}
286
287	LogFlowFunc(("bad irq %d\n", irq));
288	return 2;
289	}
290
291	static int irq_of_magic(int magic)
292	{
293	switch (magic)
294	{
295	case 1:
296	return 9;
297	case 2:
298	return 5;
299	case 4:
300	return 7;
301	case 8:
302	return 10;
303	default:
304	break;
305	}
306
307	LogFlowFunc(("bad irq magic %d\n", magic));
308	return -1;
309	}
310
311	#ifdef DEBUG
312	static inline void log_dsp(PSB16STATE pThis)
313	{
314	LogFlowFunc(("%s:%s:%d:%s:dmasize=%d:freq=%d:const=%d:speaker=%d\n",
315	pThis->fmt_stereo ? "Stereo" : "Mono",
316	pThis->fmt_signed ? "Signed" : "Unsigned",
317	pThis->fmt_bits,
318	pThis->dma_auto ? "Auto" : "Single",
319	pThis->block_size,
320	pThis->freq,
321	pThis->time_const,
322	pThis->speaker));
323	}
324	#endif
325
326	static void sb16SpeakerControl(PSB16STATE pThis, int on)
327	{
328	pThis->speaker = on;
329	/* AUD_enable (pThis->voice, on); */
330	}
331
332	static void sb16Control(PSB16STATE pThis, int hold)
333	{
334	int dma = pThis->use_hdma ? pThis->hdma : pThis->dma;
335	pThis->dma_running = hold;
336
337	LogFlowFunc(("hold %d high %d dma %d\n", hold, pThis->use_hdma, dma));
338
339	PSB16DRIVER pDrv;
340	if (hold)
341	{
342	PDMDevHlpDMASetDREQ (pThis->pDevIns, dma, 1);
343	PDMDevHlpDMASchedule (pThis->pDevIns);
344	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
345	pDrv->pConnector->pfnEnableOut(pDrv->pConnector,
346	pDrv->Out.pStrmOut, true /* fEnable */);
347	}
348	else
349	{
350	PDMDevHlpDMASetDREQ (pThis->pDevIns, dma, 0);
351	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
352	pDrv->pConnector->pfnEnableOut(pDrv->pConnector,
353	pDrv->Out.pStrmOut, false /* fEnable */);
354	}
355	}
356
357	static DECLCALLBACK(void) sb16TimerIRQ(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvThis)
358	{
359	PSB16STATE pThis = (PSB16STATE)pvThis;
360	pThis->can_write = 1;
361	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 1);
362	}
363
364	#define DMA8_AUTO 1
365	#define DMA8_HIGH 2
366
367	static void continue_dma8(PSB16STATE pThis)
368	{
369	if (pThis->freq > 0)
370	{
371	PDMAUDIOSTREAMCFG streamCfg;
372	streamCfg.uHz = pThis->freq;
373	streamCfg.cChannels = 1 << pThis->fmt_stereo;
374	streamCfg.enmFormat = pThis->fmt;
375	streamCfg.enmEndianness = PDMAUDIOHOSTENDIANNESS;
376
377	int rc = sb16OpenOut(pThis, &streamCfg);
378	AssertRC(rc);
379	}
380
381	sb16Control(pThis, 1);
382	}
383
384	static void dma_cmd8(PSB16STATE pThis, int mask, int dma_len)
385	{
386	pThis->fmt = AUD_FMT_U8;
387	pThis->use_hdma = 0;
388	pThis->fmt_bits = 8;
389	pThis->fmt_signed = 0;
390	pThis->fmt_stereo = (pThis->mixer_regs[0x0e] & 2) != 0;
391
392	if (-1 == pThis->time_const)
393	{
394	if (pThis->freq <= 0)
395	pThis->freq = 11025;
396	}
397	else
398	{
399	int tmp = (256 - pThis->time_const);
400	pThis->freq = (1000000 + (tmp / 2)) / tmp;
401	}
402
403	if (dma_len != -1)
404	{
405	pThis->block_size = dma_len << pThis->fmt_stereo;
406	}
407	else
408	{
409	/* This is apparently the only way to make both Act1/PL
410	and SecondReality/FC work
411
412	r=andy Wow, actually someone who remembers Future Crew :-)
413
414	Act1 sets block size via command 0x48 and it's an odd number
415	SR does the same with even number
416	Both use stereo, and Creatives own documentation states that
417	0x48 sets block size in bytes less one.. go figure */
418	pThis->block_size &= ~pThis->fmt_stereo;
419	}
420
421	pThis->freq >>= pThis->fmt_stereo;
422	pThis->left_till_irq = pThis->block_size;
423	pThis->bytes_per_second = (pThis->freq << pThis->fmt_stereo);
424	/* pThis->highspeed = (mask & DMA8_HIGH) != 0; */
425	pThis->dma_auto = (mask & DMA8_AUTO) != 0;
426	pThis->align = (1 << pThis->fmt_stereo) - 1;
427
428	if (pThis->block_size & pThis->align)
429	LogFlowFunc(("warning: misaligned block size %d, alignment %d\n",
430	pThis->block_size, pThis->align + 1));
431
432	LogFlowFunc(("freq %d, stereo %d, sign %d, bits %d, dma %d, auto %d, fifo %d, high %d\n",
433	pThis->freq, pThis->fmt_stereo, pThis->fmt_signed, pThis->fmt_bits,
434	pThis->block_size, pThis->dma_auto, pThis->fifo, pThis->highspeed));
435
436	continue_dma8(pThis);
437	sb16SpeakerControl(pThis, 1);
438	}
439
440	static void dma_cmd(PSB16STATE pThis, uint8_t cmd, uint8_t d0, int dma_len)
441	{
442	pThis->use_hdma = cmd < 0xc0;
443	pThis->fifo = (cmd >> 1) & 1;
444	pThis->dma_auto = (cmd >> 2) & 1;
445	pThis->fmt_signed = (d0 >> 4) & 1;
446	pThis->fmt_stereo = (d0 >> 5) & 1;
447
448	switch (cmd >> 4)
449	{
450	case 11:
451	pThis->fmt_bits = 16;
452	break;
453
454	case 12:
455	pThis->fmt_bits = 8;
456	break;
457	}
458
459	if (-1 != pThis->time_const)
460	{
461	#if 1
462	int tmp = 256 - pThis->time_const;
463	pThis->freq = (1000000 + (tmp / 2)) / tmp;
464	#else
465	/* pThis->freq = 1000000 / ((255 - pThis->time_const) << pThis->fmt_stereo); */
466	pThis->freq = 1000000 / ((255 - pThis->time_const));
467	#endif
468	pThis->time_const = -1;
469	}
470
471	pThis->block_size = dma_len + 1;
472	pThis->block_size <<= ((pThis->fmt_bits == 16) ? 1 : 0);
473	if (!pThis->dma_auto)
474	{
475	/*
476	* It is clear that for DOOM and auto-init this value
477	* shouldn't take stereo into account, while Miles Sound Systems
478	* setsound.exe with single transfer mode wouldn't work without it
479	* wonders of SB16 yet again.
480	*/
481	pThis->block_size <<= pThis->fmt_stereo;
482	}
483
484	LogFlowFunc(("freq %d, stereo %d, sign %d, bits %d, dma %d, auto %d, fifo %d, high %d\n",
485	pThis->freq, pThis->fmt_stereo, pThis->fmt_signed, pThis->fmt_bits,
486	pThis->block_size, pThis->dma_auto, pThis->fifo, pThis->highspeed));
487
488	if (16 == pThis->fmt_bits)
489	pThis->fmt = pThis->fmt_signed ? AUD_FMT_S16 : AUD_FMT_U16;
490	else
491	pThis->fmt = pThis->fmt_signed ? AUD_FMT_S8 : AUD_FMT_U8;
492
493	pThis->left_till_irq = pThis->block_size;
494
495	pThis->bytes_per_second = (pThis->freq << pThis->fmt_stereo) << ((pThis->fmt_bits == 16) ? 1 : 0);
496	pThis->highspeed = 0;
497	pThis->align = (1 << (pThis->fmt_stereo + (pThis->fmt_bits == 16))) - 1;
498	if (pThis->block_size & pThis->align)
499	{
500	LogFlowFunc(("warning: misaligned block size %d, alignment %d\n",
501	pThis->block_size, pThis->align + 1));
502	}
503
504	if (pThis->freq)
505	{
506	PDMAUDIOSTREAMCFG streamCfg;
507	streamCfg.uHz = pThis->freq;
508	streamCfg.cChannels = 1 << pThis->fmt_stereo;
509	streamCfg.enmFormat = pThis->fmt;
510	streamCfg.enmEndianness = PDMAUDIOHOSTENDIANNESS;
511
512	int rc = sb16OpenOut(pThis, &streamCfg);
513	AssertRC(rc);
514	}
515
516	sb16Control(pThis, 1);
517	sb16SpeakerControl(pThis, 1);
518	}
519
520	static inline void dsp_out_data (PSB16STATE pThis, uint8_t val)
521	{
522	LogFlowFunc(("outdata %#x\n", val));
523	if ((size_t) pThis->out_data_len < sizeof (pThis->out_data)) {
524	pThis->out_data[pThis->out_data_len++] = val;
525	}
526	}
527
528	static inline uint8_t dsp_get_data (PSB16STATE pThis)
529	{
530	if (pThis->in_index) {
531	return pThis->in2_data[--pThis->in_index];
532	}
533	else {
534	LogFlowFunc(("buffer underflow\n"));
535	return 0;
536	}
537	}
538
539	static void sb16HandleCommand(PSB16STATE pThis, uint8_t cmd)
540	{
541	LogFlowFunc(("command %#x\n", cmd));
542
543	if (cmd > 0xaf && cmd < 0xd0)
544	{
545	if (cmd & 8) /** @todo Handle recording. */
546	LogFlowFunc(("ADC not yet supported (command %#x)\n", cmd));
547
548	switch (cmd >> 4)
549	{
550	case 11:
551	case 12:
552	break;
553	default:
554	LogFlowFunc(("%#x wrong bits\n", cmd));
555	}
556
557	pThis->needed_bytes = 3;
558	}
559	else
560	{
561	pThis->needed_bytes = 0;
562
563	switch (cmd)
564	{
565	case 0x03:
566	dsp_out_data(pThis, 0x10); /* pThis->csp_param); */
567	goto warn;
568
569	case 0x04:
570	pThis->needed_bytes = 1;
571	goto warn;
572
573	case 0x05:
574	pThis->needed_bytes = 2;
575	goto warn;
576
577	case 0x08:
578	/* __asm__ ("int3"); */
579	goto warn;
580
581	case 0x0e:
582	pThis->needed_bytes = 2;
583	goto warn;
584
585	case 0x09:
586	dsp_out_data(pThis, 0xf8);
587	goto warn;
588
589	case 0x0f:
590	pThis->needed_bytes = 1;
591	goto warn;
592
593	case 0x10:
594	pThis->needed_bytes = 1;
595	goto warn;
596
597	case 0x14:
598	pThis->needed_bytes = 2;
599	pThis->block_size = 0;
600	break;
601
602	case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */
603	dma_cmd8(pThis, DMA8_AUTO, -1);
604	break;
605
606	case 0x20: /* Direct ADC, Juice/PL */
607	dsp_out_data(pThis, 0xff);
608	goto warn;
609
610	case 0x35:
611	LogFlowFunc(("0x35 - MIDI command not implemented\n"));
612	break;
613
614	case 0x40:
615	pThis->freq = -1;
616	pThis->time_const = -1;
617	pThis->needed_bytes = 1;
618	break;
619
620	case 0x41:
621	pThis->freq = -1;
622	pThis->time_const = -1;
623	pThis->needed_bytes = 2;
624	break;
625
626	case 0x42:
627	pThis->freq = -1;
628	pThis->time_const = -1;
629	pThis->needed_bytes = 2;
630	goto warn;
631
632	case 0x45:
633	dsp_out_data(pThis, 0xaa);
634	goto warn;
635
636	case 0x47: /* Continue Auto-Initialize DMA 16bit */
637	break;
638
639	case 0x48:
640	pThis->needed_bytes = 2;
641	break;
642
643	case 0x74:
644	pThis->needed_bytes = 2; /* DMA DAC, 4-bit ADPCM */
645	LogFlowFunc(("0x75 - DMA DAC, 4-bit ADPCM not implemented\n"));
646	break;
647
648	case 0x75: /* DMA DAC, 4-bit ADPCM Reference */
649	pThis->needed_bytes = 2;
650	LogFlowFunc(("0x74 - DMA DAC, 4-bit ADPCM Reference not implemented\n"));
651	break;
652
653	case 0x76: /* DMA DAC, 2.6-bit ADPCM */
654	pThis->needed_bytes = 2;
655	LogFlowFunc(("0x74 - DMA DAC, 2.6-bit ADPCM not implemented\n"));
656	break;
657
658	case 0x77: /* DMA DAC, 2.6-bit ADPCM Reference */
659	pThis->needed_bytes = 2;
660	LogFlowFunc(("0x74 - DMA DAC, 2.6-bit ADPCM Reference not implemented\n"));
661	break;
662
663	case 0x7d:
664	LogFlowFunc(("0x7d - Autio-Initialize DMA DAC, 4-bit ADPCM Reference\n"));
665	LogFlowFunc(("not implemented\n"));
666	break;
667
668	case 0x7f:
669	LogFlowFunc(("0x7d - Autio-Initialize DMA DAC, 2.6-bit ADPCM Reference\n"));
670	LogFlowFunc(("not implemented\n"));
671	break;
672
673	case 0x80:
674	pThis->needed_bytes = 2;
675	break;
676
677	case 0x90:
678	case 0x91:
679	dma_cmd8(pThis, (((cmd & 1) == 0) ? 1 : 0) \| DMA8_HIGH, -1);
680	break;
681
682	case 0xd0: /* halt DMA operation. 8bit */
683	sb16Control(pThis, 0);
684	break;
685
686	case 0xd1: /* speaker on */
687	sb16SpeakerControl(pThis, 1);
688	break;
689
690	case 0xd3: /* speaker off */
691	sb16SpeakerControl(pThis, 0);
692	break;
693
694	case 0xd4: /* continue DMA operation. 8bit */
695	/* KQ6 (or maybe Sierras audblst.drv in general) resets
696	the frequency between halt/continue */
697	continue_dma8(pThis);
698	break;
699
700	case 0xd5: /* halt DMA operation. 16bit */
701	sb16Control(pThis, 0);
702	break;
703
704	case 0xd6: /* continue DMA operation. 16bit */
705	sb16Control(pThis, 1);
706	break;
707
708	case 0xd9: /* exit auto-init DMA after this block. 16bit */
709	pThis->dma_auto = 0;
710	break;
711
712	case 0xda: /* exit auto-init DMA after this block. 8bit */
713	pThis->dma_auto = 0;
714	break;
715
716	case 0xe0: /* DSP identification */
717	pThis->needed_bytes = 1;
718	break;
719
720	case 0xe1:
721	dsp_out_data(pThis, pThis->ver & 0xff);
722	dsp_out_data(pThis, pThis->ver >> 8);
723	break;
724
725	case 0xe2:
726	pThis->needed_bytes = 1;
727	goto warn;
728
729	case 0xe3:
730	{
731	for (int i = sizeof (e3) - 1; i >= 0; --i)
732	dsp_out_data(pThis, e3[i]);
733
734	break;
735	}
736
737	case 0xe4: /* write test reg */
738	pThis->needed_bytes = 1;
739	break;
740
741	case 0xe7:
742	LogFlowFunc(("Attempt to probe for ESS (0xe7)?\n"));
743	break;
744
745	case 0xe8: /* read test reg */
746	dsp_out_data(pThis, pThis->test_reg);
747	break;
748
749	case 0xf2:
750	case 0xf3:
751	dsp_out_data(pThis, 0xaa);
752	pThis->mixer_regs[0x82] \|= (cmd == 0xf2) ? 1 : 2;
753	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 1);
754	break;
755
756	case 0xf8:
757	/* Undocumented, used by old Creative diagnostic programs. */
758	dsp_out_data (pThis, 0);
759	goto warn;
760
761	case 0xf9:
762	pThis->needed_bytes = 1;
763	goto warn;
764
765	case 0xfa:
766	dsp_out_data (pThis, 0);
767	goto warn;
768
769	case 0xfc: /* FIXME */
770	dsp_out_data (pThis, 0);
771	goto warn;
772
773	default:
774	LogFlowFunc(("Unrecognized command %#x\n", cmd));
775	break;
776	}
777	}
778
779	if (!pThis->needed_bytes)
780	LogFlow(("\n"));
781
782	exit:
783
784	if (!pThis->needed_bytes)
785	pThis->cmd = -1;
786	else
787	pThis->cmd = cmd;
788
789	return;
790
791	warn:
792	LogFlowFunc(("warning: command %#x,%d is not truly understood yet\n",
793	cmd, pThis->needed_bytes));
794	goto exit;
795	}
796
797	static uint16_t dsp_get_lohi (PSB16STATE pThis)
798	{
799	uint8_t hi = dsp_get_data (pThis);
800	uint8_t lo = dsp_get_data (pThis);
801	return (hi << 8) \| lo;
802	}
803
804	static uint16_t dsp_get_hilo (PSB16STATE pThis)
805	{
806	uint8_t lo = dsp_get_data (pThis);
807	uint8_t hi = dsp_get_data (pThis);
808	return (hi << 8) \| lo;
809	}
810
811	static void complete(PSB16STATE pThis)
812	{
813	int d0, d1, d2;
814	LogFlowFunc(("complete command %#x, in_index %d, needed_bytes %d\n",
815	pThis->cmd, pThis->in_index, pThis->needed_bytes));
816
817	if (pThis->cmd > 0xaf && pThis->cmd < 0xd0)
818	{
819	d2 = dsp_get_data (pThis);
820	d1 = dsp_get_data (pThis);
821	d0 = dsp_get_data (pThis);
822
823	if (pThis->cmd & 8)
824	LogFlowFunc(("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", pThis->cmd, d0, d1, d2));
825	else
826	{
827	LogFlowFunc(("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", pThis->cmd, d0, d1, d2));
828	dma_cmd(pThis, pThis->cmd, d0, d1 + (d2 << 8));
829	}
830	}
831	else
832	{
833	switch (pThis->cmd)
834	{
835	case 0x04:
836	pThis->csp_mode = dsp_get_data (pThis);
837	pThis->csp_reg83r = 0;
838	pThis->csp_reg83w = 0;
839	LogFlowFunc(("CSP command 0x04: mode=%#x\n", pThis->csp_mode));
840	break;
841
842	case 0x05:
843	pThis->csp_param = dsp_get_data (pThis);
844	pThis->csp_value = dsp_get_data (pThis);
845	LogFlowFunc(("CSP command 0x05: param=%#x value=%#x\n",
846	pThis->csp_param,
847	pThis->csp_value));
848	break;
849
850	case 0x0e:
851	{
852	d0 = dsp_get_data(pThis);
853	d1 = dsp_get_data(pThis);
854	LogFlowFunc(("write CSP register %d <- %#x\n", d1, d0));
855	if (d1 == 0x83)
856	{
857	LogFlowFunc(("0x83[%d] <- %#x\n", pThis->csp_reg83r, d0));
858	pThis->csp_reg83[pThis->csp_reg83r % 4] = d0;
859	pThis->csp_reg83r += 1;
860	}
861	else
862	pThis->csp_regs[d1] = d0;
863	break;
864	}
865
866	case 0x0f:
867	d0 = dsp_get_data(pThis);
868	LogFlowFunc(("read CSP register %#x -> %#x, mode=%#x\n", d0, pThis->csp_regs[d0], pThis->csp_mode));
869	if (d0 == 0x83)
870	{
871	LogFlowFunc(("0x83[%d] -> %#x\n",
872	pThis->csp_reg83w,
873	pThis->csp_reg83[pThis->csp_reg83w % 4]));
874	dsp_out_data (pThis, pThis->csp_reg83[pThis->csp_reg83w % 4]);
875	pThis->csp_reg83w += 1;
876	}
877	else
878	dsp_out_data(pThis, pThis->csp_regs[d0]);
879	break;
880
881	case 0x10:
882	d0 = dsp_get_data(pThis);
883	LogFlowFunc(("cmd 0x10 d0=%#x\n", d0));
884	break;
885
886	case 0x14:
887	dma_cmd8(pThis, 0, dsp_get_lohi (pThis) + 1);
888	break;
889
890	case 0x40:
891	pThis->time_const = dsp_get_data(pThis);
892	LogFlowFunc(("set time const %d\n", pThis->time_const));
893	break;
894
895	case 0x42: /* FT2 sets output freq with this, go figure */
896	#if 0
897	LogFlowFunc(("cmd 0x42 might not do what it think it should\n"));
898	#endif
899	case 0x41:
900	pThis->freq = dsp_get_hilo(pThis);
901	LogFlowFunc(("set freq %d\n", pThis->freq));
902	break;
903
904	case 0x48:
905	pThis->block_size = dsp_get_lohi(pThis) + 1;
906	LogFlowFunc(("set dma block len %d\n", pThis->block_size));
907	break;
908
909	case 0x74:
910	case 0x75:
911	case 0x76:
912	case 0x77:
913	/* ADPCM stuff, ignore */
914	break;
915
916	case 0x80:
917	{
918	int freq, samples, bytes;
919	uint64_t ticks;
920
921	freq = pThis->freq > 0 ? pThis->freq : 11025;
922	samples = dsp_get_lohi (pThis) + 1;
923	bytes = samples << pThis->fmt_stereo << ((pThis->fmt_bits == 16) ? 1 : 0);
924	ticks = (bytes * TMTimerGetFreq(pThis->pTimerIRQ)) / freq;
925	if (ticks < TMTimerGetFreq(pThis->pTimerIRQ) / 1024)
926	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 1);
927	else
928	TMTimerSet(pThis->pTimerIRQ, TMTimerGet(pThis->pTimerIRQ) + ticks);
929	LogFlowFunc(("mix silence %d %d % %RU64\n", samples, bytes, ticks));
930	break;
931	}
932
933	case 0xe0:
934	d0 = dsp_get_data(pThis);
935	pThis->out_data_len = 0;
936	LogFlowFunc(("E0 data = %#x\n", d0));
937	dsp_out_data(pThis, ~d0);
938	break;
939
940	case 0xe2:
941	d0 = dsp_get_data(pThis);
942	LogFlow(("SB16:E2 = %#x\n", d0));
943	break;
944
945	case 0xe4:
946	pThis->test_reg = dsp_get_data(pThis);
947	break;
948
949	case 0xf9:
950	d0 = dsp_get_data(pThis);
951	LogFlowFunc(("command 0xf9 with %#x\n", d0));
952	switch (d0) {
953	case 0x0e:
954	dsp_out_data(pThis, 0xff);
955	break;
956
957	case 0x0f:
958	dsp_out_data(pThis, 0x07);
959	break;
960
961	case 0x37:
962	dsp_out_data(pThis, 0x38);
963	break;
964
965	default:
966	dsp_out_data(pThis, 0x00);
967	break;
968	}
969	break;
970
971	default:
972	LogFlowFunc(("complete: unrecognized command %#x\n", pThis->cmd));
973	return;
974	}
975	}
976
977	LogFlow(("\n"));
978	pThis->cmd = -1;
979	return;
980	}
981
982	static uint8_t sb16MixRegToVol(PSB16STATE pThis, int reg)
983	{
984	/* The SB16 mixer has a 0 to -62dB range in 32 levels (2dB each step).
985	* We use a 0 to -96dB range in 256 levels (0.375dB each step).
986	* Only the top 5 bits of a mixer register are used.
987	*/
988	uint8_t steps = 31 - (pThis->mixer_regs[reg] >> 3);
989	uint8_t vol = 255 - steps * 16 / 3; /* (2dB8) / (0.375dB8) */
990	return vol;
991	}
992
993	static void sb16SetMasterVolume(PSB16STATE pThis)
994	{
995	/* There's no mute switch, only volume controls. */
996	uint8_t lvol = sb16MixRegToVol(pThis, 0x30);
997	uint8_t rvol = sb16MixRegToVol(pThis, 0x31);
998	PDMAUDIOVOLUME vol = { false, lvol, rvol };
999	AudioMixerSetMasterVolume(pThis->pMixer, &vol);
1000	}
1001
1002	static void sb16SetPcmOutVolume(PSB16STATE pThis)
1003	{
1004	/* There's no mute switch, only volume controls. */
1005	uint8_t lvol = sb16MixRegToVol(pThis, 0x32);
1006	uint8_t rvol = sb16MixRegToVol(pThis, 0x33);
1007	PDMAUDIOVOLUME vol = { false, lvol, rvol };
1008	AudioMixerSetSinkVolume(pThis->pSinkOutput, &vol);
1009	}
1010
1011	static void sb16ResetLegacy(PSB16STATE pThis)
1012	{
1013	pThis->freq = 11025;
1014	pThis->fmt_signed = 0;
1015	pThis->fmt_bits = 8;
1016	pThis->fmt_stereo = 0;
1017
1018	PDMAUDIOSTREAMCFG streamCfg;
1019	streamCfg.uHz = pThis->freq;
1020	streamCfg.cChannels = 1; /* Mono */
1021	streamCfg.enmFormat = AUD_FMT_U8;
1022	streamCfg.enmEndianness = PDMAUDIOHOSTENDIANNESS;
1023
1024	int rc2 = sb16OpenOut(pThis, &streamCfg);
1025	AssertRC(rc2);
1026	}
1027
1028	static void sb16Reset(PSB16STATE pThis)
1029	{
1030	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 0);
1031	if (pThis->dma_auto)
1032	{
1033	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 1);
1034	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 0);
1035	}
1036
1037	pThis->mixer_regs[0x82] = 0;
1038	pThis->dma_auto = 0;
1039	pThis->in_index = 0;
1040	pThis->out_data_len = 0;
1041	pThis->left_till_irq = 0;
1042	pThis->needed_bytes = 0;
1043	pThis->block_size = -1;
1044	pThis->nzero = 0;
1045	pThis->highspeed = 0;
1046	pThis->v2x6 = 0;
1047	pThis->cmd = -1;
1048
1049	dsp_out_data(pThis, 0xaa);
1050	sb16SpeakerControl(pThis, 0);
1051	sb16Control(pThis, 0);
1052	sb16ResetLegacy(pThis);
1053	}
1054
1055	static IO_WRITE_PROTO(dsp_write)
1056	{
1057	PSB16STATE pThis = (PSB16STATE)opaque;
1058	int iport = nport - pThis->port;
1059
1060	LogFlowFunc(("write %#x <- %#x\n", nport, val));
1061	switch (iport)
1062	{
1063	case 0x06:
1064	switch (val)
1065	{
1066	case 0x00:
1067	{
1068	if (pThis->v2x6 == 1)
1069	{
1070	if (0 && pThis->highspeed)
1071	{
1072	pThis->highspeed = 0;
1073	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 0);
1074	sb16Control(pThis, 0);
1075	}
1076	else
1077	sb16Reset(pThis);
1078	}
1079	pThis->v2x6 = 0;
1080	break;
1081	}
1082
1083	case 0x01:
1084	case 0x03: /* FreeBSD kludge */
1085	pThis->v2x6 = 1;
1086	break;
1087
1088	case 0xc6:
1089	pThis->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */
1090	break;
1091
1092	case 0xb8: /* Panic */
1093	sb16Reset(pThis);
1094	break;
1095
1096	case 0x39:
1097	dsp_out_data(pThis, 0x38);
1098	sb16Reset(pThis);
1099	pThis->v2x6 = 0x39;
1100	break;
1101
1102	default:
1103	pThis->v2x6 = val;
1104	break;
1105	}
1106	break;
1107
1108	case 0x0c: /* Write data or command \| write status */
1109	#if 0
1110	if (pThis->highspeed)
1111	break;
1112	#endif
1113	if (0 == pThis->needed_bytes)
1114	{
1115	sb16HandleCommand(pThis, val);
1116	#if 0
1117	if (0 == pThis->needed_bytes) {
1118	log_dsp (pThis);
1119	}
1120	#endif
1121	}
1122	else
1123	{
1124	if (pThis->in_index == sizeof (pThis->in2_data))
1125	{
1126	LogFlowFunc(("in data overrun\n"));
1127	}
1128	else
1129	{
1130	pThis->in2_data[pThis->in_index++] = val;
1131	if (pThis->in_index == pThis->needed_bytes)
1132	{
1133	pThis->needed_bytes = 0;
1134	complete (pThis);
1135	#if 0
1136	log_dsp (pThis);
1137	#endif
1138	}
1139	}
1140	}
1141	break;
1142
1143	default:
1144	LogFlowFunc(("nport=%#x, val=%#x)\n", nport, val));
1145	break;
1146	}
1147
1148	return VINF_SUCCESS;
1149	}
1150
1151	static IO_READ_PROTO(dsp_read)
1152	{
1153	PSB16STATE pThis = (PSB16STATE)opaque;
1154	int iport, retval, ack = 0;
1155
1156	iport = nport - pThis->port;
1157
1158	/** @todo reject non-byte access?
1159	* The spec does not mention a non-byte access so we should check how real hardware behaves. */
1160
1161	switch (iport)
1162	{
1163	case 0x06: /* reset */
1164	retval = 0xff;
1165	break;
1166
1167	case 0x0a: /* read data */
1168	if (pThis->out_data_len)
1169	{
1170	retval = pThis->out_data[--pThis->out_data_len];
1171	pThis->last_read_byte = retval;
1172	}
1173	else
1174	{
1175	if (pThis->cmd != -1)
1176	LogFlowFunc(("empty output buffer for command %#x\n", pThis->cmd));
1177	retval = pThis->last_read_byte;
1178	/* goto error; */
1179	}
1180	break;
1181
1182	case 0x0c: /* 0 can write */
1183	retval = pThis->can_write ? 0 : 0x80;
1184	break;
1185
1186	case 0x0d: /* timer interrupt clear */
1187	/* LogFlowFunc(("timer interrupt clear\n")); */
1188	retval = 0;
1189	break;
1190
1191	case 0x0e: /* data available status \| irq 8 ack */
1192	retval = (!pThis->out_data_len \|\| pThis->highspeed) ? 0 : 0x80;
1193	if (pThis->mixer_regs[0x82] & 1)
1194	{
1195	ack = 1;
1196	pThis->mixer_regs[0x82] &= ~1;
1197	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 0);
1198	}
1199	break;
1200
1201	case 0x0f: /* irq 16 ack */
1202	retval = 0xff;
1203	if (pThis->mixer_regs[0x82] & 2)
1204	{
1205	ack = 1;
1206	pThis->mixer_regs[0x82] &= ~2;
1207	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 0);
1208	}
1209	break;
1210
1211	default:
1212	goto error;
1213	}
1214
1215	if (!ack)
1216	LogFlowFunc(("read %#x -> %#x\n", nport, retval));
1217
1218	*pu32 = retval;
1219	return VINF_SUCCESS;
1220
1221	error:
1222	LogFlowFunc(("warning: dsp_read %#x error\n", nport));
1223	return VERR_IOM_IOPORT_UNUSED;
1224	}
1225
1226	static void sb16MixerReset(PSB16STATE pThis)
1227	{
1228	PSB16DRIVER pDrv;
1229
1230	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1231	pDrv->Out.phStrmOut = NULL;
1232
1233	pThis->pSinkOutput = NULL;
1234
1235	if (pThis->pMixer)
1236	{
1237	AudioMixerDestroy(pThis->pMixer);
1238	pThis->pMixer = NULL;
1239	}
1240
1241	memset(pThis->mixer_regs, 0xff, 0x7f);
1242	memset(pThis->mixer_regs + 0x83, 0xff, sizeof (pThis->mixer_regs) - 0x83);
1243
1244	pThis->mixer_regs[0x02] = 4; /* master volume 3bits */
1245	pThis->mixer_regs[0x06] = 4; /* MIDI volume 3bits */
1246	pThis->mixer_regs[0x08] = 0; /* CD volume 3bits */
1247	pThis->mixer_regs[0x0a] = 0; /* voice volume 2bits */
1248
1249	/* d5=input filt, d3=lowpass filt, d1,d2=input source */
1250	pThis->mixer_regs[0x0c] = 0;
1251
1252	/* d5=output filt, d1=stereo switch */
1253	pThis->mixer_regs[0x0e] = 0;
1254
1255	/* voice volume L d5,d7, R d1,d3 */
1256	pThis->mixer_regs[0x04] = (12 << 4) \| 12;
1257	/* master ... */
1258	pThis->mixer_regs[0x22] = (12 << 4) \| 12;
1259	/* MIDI ... */
1260	pThis->mixer_regs[0x26] = (12 << 4) \| 12;
1261
1262	/* master/voice/MIDI L/R volume */
1263	for (int i = 0x30; i < 0x36; i++)
1264	pThis->mixer_regs[i] = 24 << 3; /* -14 dB */
1265
1266	/* treble/bass */
1267	for (int i = 0x44; i < 0x48; i++)
1268	pThis->mixer_regs[i] = 0x80;
1269
1270	int rc2 = AudioMixerCreate("SB16 Mixer", 0 /* uFlags */, &pThis->pMixer);
1271	if (RT_SUCCESS(rc2))
1272	{
1273	/* Set a default audio format for our mixer. */
1274	PDMAUDIOSTREAMCFG streamCfg;
1275	streamCfg.uHz = 44100;
1276	streamCfg.cChannels = 2;
1277	streamCfg.enmFormat = AUD_FMT_S16;
1278	streamCfg.enmEndianness = PDMAUDIOHOSTENDIANNESS;
1279
1280	rc2 = AudioMixerSetDeviceFormat(pThis->pMixer, &streamCfg);
1281	AssertRC(rc2);
1282
1283	/* Add all required audio sinks. */
1284	rc2 = AudioMixerAddSink(pThis->pMixer, "[Playback] PCM Output",
1285	AUDMIXSINKDIR_OUTPUT, &pThis->pSinkOutput);
1286	AssertRC(rc2);
1287	}
1288
1289	/* Update the master (mixer) and PCM out volumes. */
1290	sb16SetMasterVolume(pThis);
1291	sb16SetPcmOutVolume(pThis);
1292	}
1293
1294	static IO_WRITE_PROTO(mixer_write_indexb)
1295	{
1296	PSB16STATE pThis = (PSB16STATE)opaque;
1297	(void) nport;
1298	pThis->mixer_nreg = val;
1299
1300	return VINF_SUCCESS;
1301	}
1302
1303	uint32_t popcount(uint32_t u) /** @todo r=andy WTF? */
1304	{
1305	u = ((u&0x55555555) + ((u>>1)&0x55555555));
1306	u = ((u&0x33333333) + ((u>>2)&0x33333333));
1307	u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
1308	u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
1309	u = ( u&0x0000ffff) + (u>>16);
1310	return u;
1311	}
1312
1313	uint32_t lsbindex(uint32_t u)
1314	{
1315	return popcount((u & -(int32_t)u) - 1);
1316	}
1317
1318	/* Convert SB16 to SB Pro mixer volume (left). */
1319	static inline void sb16ConvVolumeL(PSB16STATE pThis, unsigned reg, uint8_t val)
1320	{
1321	/* High nibble in SBP mixer. */
1322	pThis->mixer_regs[reg] = (pThis->mixer_regs[reg] & 0x0f) \| (val & 0xf0);
1323	}
1324
1325	/* Convert SB16 to SB Pro mixer volume (right). */
1326	static inline void sb16ConvVolumeR(PSB16STATE pThis, unsigned reg, uint8_t val)
1327	{
1328	/* Low nibble in SBP mixer. */
1329	pThis->mixer_regs[reg] = (pThis->mixer_regs[reg] & 0xf0) \| (val >> 4);
1330	}
1331
1332	/* Convert SB Pro to SB16 mixer volume (left + right). */
1333	static inline void sb16ConvVolumeOldToNew(PSB16STATE pThis, unsigned reg, uint8_t val)
1334	{
1335	/* Left channel. */
1336	pThis->mixer_regs[reg + 0] = (val & 0xf0) \| RT_BIT(3);
1337	/* Right channel (the register immediately following). */
1338	pThis->mixer_regs[reg + 1] = (val << 4) \| RT_BIT(3);
1339	}
1340
1341	static IO_WRITE_PROTO(mixer_write_datab)
1342	{
1343	PSB16STATE pThis = (PSB16STATE)opaque;
1344	bool fUpdateMaster = false;
1345	bool fUpdateStream = false;
1346
1347	(void) nport;
1348	LogFlowFunc(("mixer_write [%#x] <- %#x\n", pThis->mixer_nreg, val));
1349
1350	switch (pThis->mixer_nreg)
1351	{
1352	case 0x00:
1353	sb16MixerReset(pThis);
1354	/* And update the actual volume, too. */
1355	fUpdateMaster = true;
1356	fUpdateStream = true;
1357	break;
1358
1359	case 0x04: /* Translate from old style voice volume (L/R). */
1360	sb16ConvVolumeOldToNew(pThis, 0x32, val);
1361	fUpdateStream = true;
1362	break;
1363
1364	case 0x22: /* Translate from old style master volume (L/R). */
1365	sb16ConvVolumeOldToNew(pThis, 0x30, val);
1366	fUpdateMaster = true;
1367	break;
1368
1369	case 0x26: /* Translate from old style MIDI volume (L/R). */
1370	sb16ConvVolumeOldToNew(pThis, 0x34, val);
1371	break;
1372
1373	case 0x28: /* Translate from old style CD volume (L/R). */
1374	sb16ConvVolumeOldToNew(pThis, 0x36, val);
1375	break;
1376
1377	case 0x2E: /* Translate from old style line volume (L/R). */
1378	sb16ConvVolumeOldToNew(pThis, 0x38, val);
1379	break;
1380
1381	case 0x30: /* Translate to old style master volume (L). */
1382	sb16ConvVolumeL(pThis, 0x22, val);
1383	fUpdateMaster = true;
1384	break;
1385
1386	case 0x31: /* Translate to old style master volume (R). */
1387	sb16ConvVolumeR(pThis, 0x22, val);
1388	fUpdateMaster = true;
1389	break;
1390
1391	case 0x32: /* Translate to old style voice volume (L). */
1392	sb16ConvVolumeL(pThis, 0x04, val);
1393	fUpdateStream = true;
1394	break;
1395
1396	case 0x33: /* Translate to old style voice volume (R). */
1397	sb16ConvVolumeR(pThis, 0x04, val);
1398	fUpdateStream = true;
1399	break;
1400
1401	case 0x34: /* Translate to old style MIDI volume (L). */
1402	sb16ConvVolumeL(pThis, 0x26, val);
1403	break;
1404
1405	case 0x35: /* Translate to old style MIDI volume (R). */
1406	sb16ConvVolumeR(pThis, 0x26, val);
1407	break;
1408
1409	case 0x36: /* Translate to old style CD volume (L). */
1410	sb16ConvVolumeL(pThis, 0x28, val);
1411	break;
1412
1413	case 0x37: /* Translate to old style CD volume (R). */
1414	sb16ConvVolumeR(pThis, 0x28, val);
1415	break;
1416
1417	case 0x38: /* Translate to old style line volume (L). */
1418	sb16ConvVolumeL(pThis, 0x2E, val);
1419	break;
1420
1421	case 0x39: /* Translate to old style line volume (R). */
1422	sb16ConvVolumeR(pThis, 0x2E, val);
1423	break;
1424
1425	case 0x80:
1426	{
1427	int irq = irq_of_magic(val);
1428	LogFlowFunc(("setting irq to %d (val=%#x)\n", irq, val));
1429	if (irq > 0)
1430	pThis->irq = irq;
1431	break;
1432	}
1433
1434	case 0x81:
1435	{
1436	int dma, hdma;
1437
1438	dma = lsbindex (val & 0xf);
1439	hdma = lsbindex (val & 0xf0);
1440	if (dma != pThis->dma \|\| hdma != pThis->hdma)
1441	LogFlow(("SB16: attempt to change DMA 8bit %d(%d), 16bit %d(%d) (val=%#x)\n",
1442	dma, pThis->dma, hdma, pThis->hdma, val));
1443	#if 0
1444	pThis->dma = dma;
1445	pThis->hdma = hdma;
1446	#endif
1447	break;
1448	}
1449
1450	case 0x82:
1451	LogFlowFunc(("attempt to write into IRQ status register (val=%#x)\n", val));
1452	return VINF_SUCCESS;
1453
1454	default:
1455	if (pThis->mixer_nreg >= 0x80)
1456	LogFlowFunc(("attempt to write mixer[%#x] <- %#x\n", pThis->mixer_nreg, val));
1457	break;
1458	}
1459
1460	pThis->mixer_regs[pThis->mixer_nreg] = val;
1461
1462	/* Update the master (mixer) volume. */
1463	if (fUpdateMaster)
1464	sb16SetMasterVolume(pThis);
1465
1466	/* Update the stream (PCM) volume. */
1467	if (fUpdateStream)
1468	sb16SetPcmOutVolume(pThis);
1469
1470	return VINF_SUCCESS;
1471	}
1472
1473	static IO_WRITE_PROTO(mixer_write)
1474	{
1475	PSB16STATE pThis = (PSB16STATE)opaque;
1476	int iport = nport - pThis->port;
1477	switch (cb)
1478	{
1479	case 1:
1480	switch (iport)
1481	{
1482	case 4:
1483	mixer_write_indexb (pDevIns, opaque, nport, val, 1);
1484	break;
1485	case 5:
1486	mixer_write_datab (pDevIns, opaque, nport, val, 1);
1487	break;
1488	}
1489	break;
1490	case 2:
1491	mixer_write_indexb (pDevIns, opaque, nport, val & 0xff, 1);
1492	mixer_write_datab (pDevIns, opaque, nport, (val >> 8) & 0xff, 1);
1493	break;
1494	default:
1495	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", nport, cb, val));
1496	break;
1497	}
1498	return VINF_SUCCESS;
1499	}
1500
1501	static IO_READ_PROTO(mixer_read)
1502	{
1503	PSB16STATE pThis = (PSB16STATE)opaque;
1504
1505	(void) nport;
1506	#ifndef DEBUG_SB16_MOST
1507	if (pThis->mixer_nreg != 0x82) {
1508	LogFlowFunc(("mixer_read[%#x] -> %#x\n",
1509	pThis->mixer_nreg, pThis->mixer_regs[pThis->mixer_nreg]));
1510	}
1511	#else
1512	LogFlowFunc(("mixer_read[%#x] -> %#x\n",
1513	pThis->mixer_nreg, pThis->mixer_regs[pThis->mixer_nreg]));
1514	#endif
1515	*pu32 = pThis->mixer_regs[pThis->mixer_nreg];
1516	return VINF_SUCCESS;
1517	}
1518
1519	static int sb16WriteAudio(PSB16STATE pThis, int nchan, uint32_t dma_pos,
1520	uint32_t dma_len, int len)
1521	{
1522	uint8_t tmpbuf[_4K]; /** @todo Have a buffer on the heap. */
1523	uint32_t cbToWrite = len;
1524	uint32_t cbWrittenTotal = 0;
1525
1526	while (cbToWrite)
1527	{
1528	uint32_t cbWrittenMin = UINT32_MAX;
1529	uint32_t cbToRead;
1530	uint32_t cbRead;
1531
1532	cbToRead = RT_MIN(dma_len - dma_pos, cbToWrite);
1533	if (cbToRead > sizeof(tmpbuf))
1534	cbToRead = sizeof(tmpbuf);
1535
1536	int rc = PDMDevHlpDMAReadMemory(pThis->pDevIns, nchan, tmpbuf, dma_pos, cbToRead, &cbRead);
1537	AssertMsgRC(rc, ("DMAReadMemory -> %Rrc\n", rc));
1538
1539	uint32_t cbWritten;
1540
1541	/* Just multiplex the output to the connected backends.
1542	* No need to utilize the virtual mixer here (yet). */
1543	PSB16DRIVER pDrv;
1544	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1545	{
1546	int rc2 = pDrv->pConnector->pfnWrite(pDrv->pConnector, pDrv->Out.pStrmOut,
1547	tmpbuf, cbToRead, &cbWritten);
1548	AssertRCBreak(rc);
1549	if (RT_FAILURE(rc2))
1550	continue;
1551
1552	cbWrittenMin = RT_MIN(cbWrittenMin, cbWritten);
1553	LogFlowFunc(("\tLUN#%RU8: cbWritten=%RU32, cWrittenMin=%RU32\n", pDrv->uLUN, cbWritten, cbWrittenMin));
1554	}
1555
1556	Assert(cbToWrite >= cbWrittenMin);
1557	cbToWrite -= cbWrittenMin;
1558	dma_pos = (dma_pos + cbWrittenMin) % dma_len;
1559	cbWrittenTotal += cbWrittenMin;
1560
1561	if (!cbRead \|\| !cbWrittenMin)
1562	break;
1563	}
1564
1565	return cbWrittenTotal;
1566	}
1567
1568	static DECLCALLBACK(uint32_t) sb16DMARead(PPDMDEVINS pDevIns, void *opaque, unsigned nchan, uint32_t dma_pos, uint32_t dma_len)
1569	{
1570	PSB16STATE pThis = (PSB16STATE)opaque;
1571	int till, copy, written, free;
1572
1573	if (pThis->block_size <= 0)
1574	{
1575	LogFlowFunc(("invalid block size=%d nchan=%d dma_pos=%d dma_len=%d\n",
1576	pThis->block_size, nchan, dma_pos, dma_len));
1577	return dma_pos;
1578	}
1579
1580	if (pThis->left_till_irq < 0)
1581	pThis->left_till_irq = pThis->block_size;
1582
1583	PSB16DRIVER pDrv;
1584
1585	uint32_t cbOutMin = UINT32_MAX;
1586	uint32_t cbOut;
1587	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1588	{
1589	int rc2 = pDrv->pConnector->pfnQueryStatus(pDrv->pConnector,
1590	NULL /* pcbIn /, &cbOut, NULL / pcSamplesLive */);
1591	if (RT_SUCCESS(rc2))
1592	cbOutMin = RT_MIN(cbOutMin, cbOut);
1593	}
1594
1595	LogFlowFunc(("cbOutMin=%RU32\n", cbOutMin));
1596	if (cbOutMin == UINT32_MAX)
1597	{
1598	free = dma_len;
1599	}
1600	else
1601	{
1602	free = cbOutMin & ~pThis->align; /** @todo int vs. uint32. */
1603	if ((free <= 0) \|\| !dma_len)
1604	return dma_pos;
1605	}
1606
1607	copy = free;
1608	till = pThis->left_till_irq;
1609
1610	#ifdef DEBUG_SB16_MOST
1611	LogFlowFunc(("pos:%06d %d till:%d len:%d\n", dma_pos, free, till, dma_len));
1612	#endif
1613
1614	if (copy >= till)
1615	{
1616	if (0 == pThis->dma_auto)
1617	{
1618	copy = till;
1619	}
1620	else
1621	{
1622	if (copy >= till + pThis->block_size)
1623	copy = till; /* Make sure we won't skip IRQs. */
1624	}
1625	}
1626
1627	written = sb16WriteAudio(pThis, nchan, dma_pos, dma_len, copy);
1628	dma_pos = (dma_pos + written) % dma_len;
1629	pThis->left_till_irq -= written;
1630
1631	if (pThis->left_till_irq <= 0)
1632	{
1633	pThis->mixer_regs[0x82] \|= (nchan & 4) ? 2 : 1;
1634	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 1);
1635	if (0 == pThis->dma_auto)
1636	{
1637	sb16Control(pThis, 0);
1638	sb16SpeakerControl(pThis, 0);
1639	}
1640	}
1641
1642	#ifdef DEBUG_SB16_MOST
1643	LogFlowFunc(("pos %5d free %5d size %5d till % 5d copy %5d written %5d size %5d\n",
1644	dma_pos, free, dma_len, pThis->left_till_irq, copy, written,
1645	pThis->block_size));
1646	#endif
1647
1648	while (pThis->left_till_irq <= 0)
1649	pThis->left_till_irq += pThis->block_size;
1650
1651	return dma_pos;
1652	}
1653
1654	static DECLCALLBACK(void) sb16TimerIO(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
1655	{
1656	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
1657	AssertPtrReturnVoid(pThis);
1658
1659	int rc = VINF_SUCCESS;
1660
1661	uint32_t cbInMax = 0;
1662	uint32_t cbOutMin = UINT32_MAX;
1663
1664	PSB16DRIVER pDrv;
1665
1666	uint32_t cbIn, cbOut, cSamplesLive;
1667	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1668	{
1669	rc = pDrv->pConnector->pfnQueryStatus(pDrv->pConnector,
1670	&cbIn, &cbOut, &cSamplesLive);
1671	if (RT_SUCCESS(rc))
1672	{
1673	LogFlowFunc(("\tLUN#%RU8: [1] cbIn=%RU32, cbOut=%RU32\n", pDrv->uLUN, cbIn, cbOut));
1674
1675	if (cSamplesLive)
1676	{
1677	uint32_t cSamplesPlayed;
1678	int rc2 = pDrv->pConnector->pfnPlayOut(pDrv->pConnector, &cSamplesPlayed);
1679	if (RT_SUCCESS(rc2))
1680	LogFlowFunc(("LUN#%RU8: cSamplesLive=%RU32, cSamplesPlayed=%RU32\n",
1681	pDrv->uLUN, cSamplesLive, cSamplesPlayed));
1682
1683	if (cSamplesPlayed)
1684	{
1685	rc = pDrv->pConnector->pfnQueryStatus(pDrv->pConnector,
1686	&cbIn, &cbOut, &cSamplesLive);
1687	if (RT_SUCCESS(rc))
1688	LogFlowFunc(("\tLUN#%RU8: [2] cbIn=%RU32, cbOut=%RU32\n", pDrv->uLUN, cbIn, cbOut));
1689	}
1690	}
1691
1692	cbInMax = RT_MAX(cbInMax, cbIn);
1693	cbOutMin = RT_MIN(cbOutMin, cbOut);
1694	}
1695	}
1696
1697	LogFlowFunc(("cbInMax=%RU32, cbOutMin=%RU32\n", cbInMax, cbOutMin));
1698
1699	if (cbOutMin == UINT32_MAX)
1700	cbOutMin = 0;
1701
1702	/*
1703	* Playback.
1704	*/
1705	if (cbOutMin)
1706	{
1707	Assert(cbOutMin != UINT32_MAX);
1708
1709	/* New space available, see if we can transfer more. */
1710	PDMDevHlpDMASchedule(pThis->pDevIns);
1711	}
1712
1713	/*
1714	* Recording.
1715	*/
1716	/** @todo Implement recording. */
1717
1718	TMTimerSet(pThis->pTimerIO, TMTimerGet(pThis->pTimerIO) + pThis->uTicksIO);
1719	}
1720
1721	static void sb16Save(PSSMHANDLE pSSM, PSB16STATE pThis)
1722	{
1723	SSMR3PutS32(pSSM, pThis->irq);
1724	SSMR3PutS32(pSSM, pThis->dma);
1725	SSMR3PutS32(pSSM, pThis->hdma);
1726	SSMR3PutS32(pSSM, pThis->port);
1727	SSMR3PutS32(pSSM, pThis->ver);
1728	SSMR3PutS32(pSSM, pThis->in_index);
1729	SSMR3PutS32(pSSM, pThis->out_data_len);
1730	SSMR3PutS32(pSSM, pThis->fmt_stereo);
1731	SSMR3PutS32(pSSM, pThis->fmt_signed);
1732	SSMR3PutS32(pSSM, pThis->fmt_bits);
1733
1734	SSMR3PutU32(pSSM, pThis->fmt);
1735
1736	SSMR3PutS32(pSSM, pThis->dma_auto);
1737	SSMR3PutS32(pSSM, pThis->block_size);
1738	SSMR3PutS32(pSSM, pThis->fifo);
1739	SSMR3PutS32(pSSM, pThis->freq);
1740	SSMR3PutS32(pSSM, pThis->time_const);
1741	SSMR3PutS32(pSSM, pThis->speaker);
1742	SSMR3PutS32(pSSM, pThis->needed_bytes);
1743	SSMR3PutS32(pSSM, pThis->cmd);
1744	SSMR3PutS32(pSSM, pThis->use_hdma);
1745	SSMR3PutS32(pSSM, pThis->highspeed);
1746	SSMR3PutS32(pSSM, pThis->can_write);
1747	SSMR3PutS32(pSSM, pThis->v2x6);
1748
1749	SSMR3PutU8 (pSSM, pThis->csp_param);
1750	SSMR3PutU8 (pSSM, pThis->csp_value);
1751	SSMR3PutU8 (pSSM, pThis->csp_mode);
1752	SSMR3PutU8 (pSSM, pThis->csp_param); /* Bug compatible! */
1753	SSMR3PutMem(pSSM, pThis->csp_regs, 256);
1754	SSMR3PutU8 (pSSM, pThis->csp_index);
1755	SSMR3PutMem(pSSM, pThis->csp_reg83, 4);
1756	SSMR3PutS32(pSSM, pThis->csp_reg83r);
1757	SSMR3PutS32(pSSM, pThis->csp_reg83w);
1758
1759	SSMR3PutMem(pSSM, pThis->in2_data, sizeof (pThis->in2_data));
1760	SSMR3PutMem(pSSM, pThis->out_data, sizeof (pThis->out_data));
1761	SSMR3PutU8 (pSSM, pThis->test_reg);
1762	SSMR3PutU8 (pSSM, pThis->last_read_byte);
1763
1764	SSMR3PutS32(pSSM, pThis->nzero);
1765	SSMR3PutS32(pSSM, pThis->left_till_irq);
1766	SSMR3PutS32(pSSM, pThis->dma_running);
1767	SSMR3PutS32(pSSM, pThis->bytes_per_second);
1768	SSMR3PutS32(pSSM, pThis->align);
1769
1770	SSMR3PutS32(pSSM, pThis->mixer_nreg);
1771	SSMR3PutMem(pSSM, pThis->mixer_regs, 256);
1772
1773	}
1774
1775	static int sb16Load(PSSMHANDLE pSSM, PSB16STATE pThis, int version_id)
1776	{
1777	SSMR3GetS32(pSSM, &pThis->irq);
1778	SSMR3GetS32(pSSM, &pThis->dma);
1779	SSMR3GetS32(pSSM, &pThis->hdma);
1780	SSMR3GetS32(pSSM, &pThis->port);
1781	SSMR3GetS32(pSSM, &pThis->ver);
1782	SSMR3GetS32(pSSM, &pThis->in_index);
1783	SSMR3GetS32(pSSM, &pThis->out_data_len);
1784	SSMR3GetS32(pSSM, &pThis->fmt_stereo);
1785	SSMR3GetS32(pSSM, &pThis->fmt_signed);
1786	SSMR3GetS32(pSSM, &pThis->fmt_bits);
1787
1788	SSMR3GetU32(pSSM, (uint32_t *)&pThis->fmt);
1789
1790	SSMR3GetS32(pSSM, &pThis->dma_auto);
1791	SSMR3GetS32(pSSM, &pThis->block_size);
1792	SSMR3GetS32(pSSM, &pThis->fifo);
1793	SSMR3GetS32(pSSM, &pThis->freq);
1794	SSMR3GetS32(pSSM, &pThis->time_const);
1795	SSMR3GetS32(pSSM, &pThis->speaker);
1796	SSMR3GetS32(pSSM, &pThis->needed_bytes);
1797	SSMR3GetS32(pSSM, &pThis->cmd);
1798	SSMR3GetS32(pSSM, &pThis->use_hdma);
1799	SSMR3GetS32(pSSM, &pThis->highspeed);
1800	SSMR3GetS32(pSSM, &pThis->can_write);
1801	SSMR3GetS32(pSSM, &pThis->v2x6);
1802
1803	SSMR3GetU8 (pSSM, &pThis->csp_param);
1804	SSMR3GetU8 (pSSM, &pThis->csp_value);
1805	SSMR3GetU8 (pSSM, &pThis->csp_mode);
1806	SSMR3GetU8 (pSSM, &pThis->csp_param); /* Bug compatible! */
1807	SSMR3GetMem(pSSM, pThis->csp_regs, 256);
1808	SSMR3GetU8 (pSSM, &pThis->csp_index);
1809	SSMR3GetMem(pSSM, pThis->csp_reg83, 4);
1810	SSMR3GetS32(pSSM, &pThis->csp_reg83r);
1811	SSMR3GetS32(pSSM, &pThis->csp_reg83w);
1812
1813	SSMR3GetMem(pSSM, pThis->in2_data, sizeof (pThis->in2_data));
1814	SSMR3GetMem(pSSM, pThis->out_data, sizeof (pThis->out_data));
1815	SSMR3GetU8 (pSSM, &pThis->test_reg);
1816	SSMR3GetU8 (pSSM, &pThis->last_read_byte);
1817
1818	SSMR3GetS32(pSSM, &pThis->nzero);
1819	SSMR3GetS32(pSSM, &pThis->left_till_irq);
1820	SSMR3GetS32(pSSM, &pThis->dma_running);
1821	SSMR3GetS32(pSSM, &pThis->bytes_per_second);
1822	SSMR3GetS32(pSSM, &pThis->align);
1823
1824	SSMR3GetS32(pSSM, &pThis->mixer_nreg);
1825	SSMR3GetMem(pSSM, pThis->mixer_regs, 256);
1826
1827	#if 0
1828	PSB16DRIVER pDrv;
1829	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1830	{
1831	if (pDrv->Out.pStrmOut)
1832	{
1833	pDrv->pConnector->pfnCloseOut(pThis->pDrv, pDrv->Out.pStrmOut);
1834	pDrv->Out.pStrmOut = NULL;
1835	}
1836	}
1837	#endif
1838
1839	if (pThis->dma_running)
1840	{
1841	if (pThis->freq)
1842	{
1843	PDMAUDIOSTREAMCFG streamCfg;
1844	streamCfg.uHz = pThis->freq;
1845	streamCfg.cChannels = 1 << pThis->fmt_stereo;
1846	streamCfg.enmFormat = pThis->fmt;
1847	streamCfg.enmEndianness = PDMAUDIOHOSTENDIANNESS;
1848
1849	int rc = sb16OpenOut(pThis, &streamCfg);
1850	AssertRC(rc);
1851	}
1852
1853	sb16Control(pThis, 1);
1854	sb16SpeakerControl(pThis, pThis->speaker);
1855	}
1856
1857	/* Update the master (mixer) and PCM out volumes. */
1858	sb16SetMasterVolume(pThis);
1859	sb16SetPcmOutVolume(pThis);
1860
1861	return VINF_SUCCESS;
1862	}
1863
1864	static DECLCALLBACK(int) sb16LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
1865	{
1866	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
1867
1868	SSMR3PutS32(pSSM, pThis->irqCfg);
1869	SSMR3PutS32(pSSM, pThis->dmaCfg);
1870	SSMR3PutS32(pSSM, pThis->hdmaCfg);
1871	SSMR3PutS32(pSSM, pThis->portCfg);
1872	SSMR3PutS32(pSSM, pThis->verCfg);
1873	return VINF_SSM_DONT_CALL_AGAIN;
1874	}
1875
1876	static DECLCALLBACK(int) sb16SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1877	{
1878	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
1879
1880	sb16LiveExec(pDevIns, pSSM, 0);
1881	sb16Save(pSSM, pThis);
1882	return VINF_SUCCESS;
1883	}
1884
1885	static DECLCALLBACK(int) sb16LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1886	{
1887	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
1888
1889	AssertMsgReturn( uVersion == SB16_SAVE_STATE_VERSION
1890	\|\| uVersion == SB16_SAVE_STATE_VERSION_VBOX_30,
1891	("%u\n", uVersion),
1892	VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION);
1893	if (uVersion > SB16_SAVE_STATE_VERSION_VBOX_30)
1894	{
1895	int32_t irq;
1896	SSMR3GetS32 (pSSM, &irq);
1897	int32_t dma;
1898	SSMR3GetS32 (pSSM, &dma);
1899	int32_t hdma;
1900	SSMR3GetS32 (pSSM, &hdma);
1901	int32_t port;
1902	SSMR3GetS32 (pSSM, &port);
1903	int32_t ver;
1904	int rc = SSMR3GetS32 (pSSM, &ver);
1905	AssertRCReturn (rc, rc);
1906
1907	if ( irq != pThis->irqCfg
1908	\|\| dma != pThis->dmaCfg
1909	\|\| hdma != pThis->hdmaCfg
1910	\|\| port != pThis->portCfg
1911	\|\| ver != pThis->verCfg)
1912	{
1913	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
1914	N_("config changed: irq=%x/%x dma=%x/%x hdma=%x/%x port=%x/%x ver=%x/%x (saved/config)"),
1915	irq, pThis->irqCfg,
1916	dma, pThis->dmaCfg,
1917	hdma, pThis->hdmaCfg,
1918	port, pThis->portCfg,
1919	ver, pThis->verCfg);
1920	}
1921	}
1922
1923	if (uPass != SSM_PASS_FINAL)
1924	return VINF_SUCCESS;
1925
1926	sb16Load(pSSM, pThis, uVersion);
1927	return VINF_SUCCESS;
1928	}
1929
1930	static int sb16OpenOut(PSB16STATE pThis, PPDMAUDIOSTREAMCFG pCfg)
1931	{
1932	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
1933	AssertPtrReturn(pCfg, VERR_INVALID_POINTER);
1934
1935	int rc = VINF_SUCCESS;
1936
1937	PSB16DRIVER pDrv;
1938	uint8_t uLUN = 0;
1939	char *pszDesc;
1940	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1941	{
1942	if (RTStrAPrintf(&pszDesc, "[LUN#%RU8] sb16.po", uLUN) <= 0)
1943	{
1944	rc = VERR_NO_MEMORY;
1945	break;
1946	}
1947
1948	int rc2 = pDrv->pConnector->pfnCreateOut(pDrv->pConnector, pszDesc, pCfg, &pDrv->Out.pStrmOut);
1949	LogFlowFunc(("LUN#%RU8: Created output with rc=%Rrc\n", uLUN, rc));
1950	if (rc2 == VINF_SUCCESS) /* Note: Could return VWRN_ALREADY_EXISTS. */
1951	{
1952	AudioMixerRemoveStream(pThis->pSinkOutput, pDrv->Out.phStrmOut);
1953	rc = AudioMixerAddStreamOut(pThis->pSinkOutput,
1954	pDrv->pConnector, pDrv->Out.pStrmOut,
1955	0 /* uFlags */,
1956	&pDrv->Out.phStrmOut);
1957	}
1958
1959	RTStrFree(pszDesc);
1960
1961	if (RT_FAILURE(rc2))
1962	{
1963	if (RT_SUCCESS(rc))
1964	rc = rc2;
1965	break;
1966	}
1967
1968	uLUN++;
1969	}
1970	/* Ensure volume gets propagated. */
1971	AudioMixerInvalidate(pThis->pMixer);
1972
1973	return rc;
1974	}
1975
1976	/**
1977	* @interface_method_impl{PDMDEVREG,pfnReset}
1978	*/
1979	static DECLCALLBACK(void) sb16DevReset(PPDMDEVINS pDevIns)
1980	{
1981	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
1982
1983	/* Bring back the device to initial state, and especially make
1984	* sure there's no interrupt or DMA activity.
1985	*/
1986	PDMDevHlpISASetIrq(pThis->pDevIns, pThis->irq, 0);
1987
1988	pThis->mixer_regs[0x82] = 0;
1989	pThis->csp_regs[5] = 1;
1990	pThis->csp_regs[9] = 0xf8;
1991
1992	pThis->dma_auto = 0;
1993	pThis->in_index = 0;
1994	pThis->out_data_len = 0;
1995	pThis->left_till_irq = 0;
1996	pThis->needed_bytes = 0;
1997	pThis->block_size = -1;
1998	pThis->nzero = 0;
1999	pThis->highspeed = 0;
2000	pThis->v2x6 = 0;
2001	pThis->cmd = -1;
2002
2003	sb16MixerReset(pThis);
2004	sb16SpeakerControl(pThis, 0);
2005	sb16Control(pThis, 0);
2006	sb16ResetLegacy(pThis);
2007	}
2008
2009	/**
2010	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2011	*/
2012	static DECLCALLBACK(void ) sb16QueryInterface(struct PDMIBASE pInterface, const char *pszIID)
2013	{
2014	PSB16STATE pThis = RT_FROM_MEMBER(pInterface, SB16STATE, IBase);
2015	Assert(&pThis->IBase == pInterface);
2016
2017	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
2018	return NULL;
2019	}
2020
2021	/**
2022	* @interface_method_impl{PDMDEVREG,pfnDestruct}
2023	*/
2024	static DECLCALLBACK(int) sb16Destruct(PPDMDEVINS pDevIns)
2025	{
2026	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
2027
2028	PSB16DRIVER pDrv;
2029
2030	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
2031	pDrv->Out.phStrmOut = NULL;
2032
2033	pThis->pSinkOutput = NULL;
2034
2035	if (pThis->pMixer)
2036	{
2037	AudioMixerDestroy(pThis->pMixer);
2038	pThis->pMixer = NULL;
2039	}
2040
2041	return VINF_SUCCESS;
2042	}
2043
2044	static DECLCALLBACK(int) sb16Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfgHandle)
2045	{
2046	PSB16STATE pThis = PDMINS_2_DATA(pDevIns, PSB16STATE);
2047	int rc;
2048
2049	/*
2050	* Validations.
2051	*/
2052	Assert(iInstance == 0);
2053	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2054	if (!CFGMR3AreValuesValid(pCfgHandle,
2055	"IRQ\0"
2056	"DMA\0"
2057	"DMA16\0"
2058	"Port\0"
2059	"Version\0"))
2060	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
2061	N_("Invalid configuration for sb16 device"));
2062
2063	/*
2064	* Read config data.
2065	*/
2066	rc = CFGMR3QuerySIntDef(pCfgHandle, "IRQ", &pThis->irq, 5);
2067	if (RT_FAILURE(rc))
2068	return PDMDEV_SET_ERROR(pDevIns, rc,
2069	N_("Configuration error: Failed to get the \"IRQ\" value"));
2070	pThis->irqCfg = pThis->irq;
2071
2072	rc = CFGMR3QuerySIntDef(pCfgHandle, "DMA", &pThis->dma, 1);
2073	if (RT_FAILURE(rc))
2074	return PDMDEV_SET_ERROR(pDevIns, rc,
2075	N_("Configuration error: Failed to get the \"DMA\" value"));
2076	pThis->dmaCfg = pThis->dma;
2077
2078	rc = CFGMR3QuerySIntDef(pCfgHandle, "DMA16", &pThis->hdma, 5);
2079	if (RT_FAILURE(rc))
2080	return PDMDEV_SET_ERROR(pDevIns, rc,
2081	N_("Configuration error: Failed to get the \"DMA16\" value"));
2082	pThis->hdmaCfg = pThis->hdma;
2083
2084	RTIOPORT Port;
2085	rc = CFGMR3QueryPortDef(pCfgHandle, "Port", &Port, 0x220);
2086	if (RT_FAILURE(rc))
2087	return PDMDEV_SET_ERROR(pDevIns, rc,
2088	N_("Configuration error: Failed to get the \"Port\" value"));
2089	pThis->port = Port;
2090	pThis->portCfg = Port;
2091
2092	uint16_t u16Version;
2093	rc = CFGMR3QueryU16Def(pCfgHandle, "Version", &u16Version, 0x0405);
2094	if (RT_FAILURE(rc))
2095	return PDMDEV_SET_ERROR(pDevIns, rc,
2096	N_("Configuration error: Failed to get the \"Version\" value"));
2097	pThis->ver = u16Version;
2098	pThis->verCfg = u16Version;
2099
2100	/*
2101	* Init instance data.
2102	*/
2103	pThis->pDevIns = pDevIns;
2104	pThis->IBase.pfnQueryInterface = sb16QueryInterface;
2105	pThis->cmd = -1;
2106
2107	pThis->mixer_regs[0x80] = magic_of_irq (pThis->irq);
2108	pThis->mixer_regs[0x81] = (1 << pThis->dma) \| (1 << pThis->hdma);
2109	pThis->mixer_regs[0x82] = 2 << 5;
2110
2111	pThis->csp_regs[5] = 1;
2112	pThis->csp_regs[9] = 0xf8;
2113
2114	RTListInit(&pThis->lstDrv);
2115
2116	sb16MixerReset(pThis);
2117
2118	/*
2119	* Create timer(s), register & attach stuff.
2120	*/
2121	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, sb16TimerIRQ, pThis,
2122	TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "SB16 IRQ timer", &pThis->pTimerIRQ);
2123	if (RT_FAILURE(rc))
2124	AssertMsgFailedReturn(("Error creating IRQ timer, rc=%Rrc\n", rc), rc);
2125
2126	rc = PDMDevHlpIOPortRegister(pDevIns, pThis->port + 0x04, 2, pThis,
2127	mixer_write, mixer_read, NULL, NULL, "SB16");
2128	if (RT_FAILURE(rc))
2129	return rc;
2130	rc = PDMDevHlpIOPortRegister(pDevIns, pThis->port + 0x06, 10, pThis,
2131	dsp_write, dsp_read, NULL, NULL, "SB16");
2132	if (RT_FAILURE(rc))
2133	return rc;
2134
2135	rc = PDMDevHlpDMARegister(pDevIns, pThis->hdma, sb16DMARead, pThis);
2136	if (RT_FAILURE(rc))
2137	return rc;
2138	rc = PDMDevHlpDMARegister(pDevIns, pThis->dma, sb16DMARead, pThis);
2139	if (RT_FAILURE(rc))
2140	return rc;
2141
2142	pThis->can_write = 1;
2143
2144	rc = PDMDevHlpSSMRegister3(pDevIns, SB16_SAVE_STATE_VERSION, sizeof(SB16STATE), sb16LiveExec, sb16SaveExec, sb16LoadExec);
2145	if (RT_FAILURE(rc))
2146	return rc;
2147
2148	/*
2149	* Attach driver.
2150	*/
2151	uint8_t uLUN;
2152	for (uLUN = 0; uLUN < UINT8_MAX; uLUN)
2153	{
2154	LogFunc(("Trying to attach driver for LUN #%RU8 ...\n", uLUN));
2155	rc = sb16Attach(pDevIns, uLUN, PDM_TACH_FLAGS_NOT_HOT_PLUG);
2156	if (RT_FAILURE(rc))
2157	{
2158	if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
2159	rc = VINF_SUCCESS;
2160	break;
2161	}
2162
2163	uLUN++;
2164	}
2165
2166	LogFunc(("cLUNs=%RU8, rc=%Rrc\n", uLUN, rc));
2167
2168	sb16ResetLegacy(pThis);
2169
2170	PSB16DRIVER pDrv;
2171	uLUN = 0;
2172	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
2173	{
2174	PPDMIAUDIOCONNECTOR pCon = pDrv->pConnector;
2175	AssertPtr(pCon);
2176
2177	bool fIsOK = pCon->pfnIsOutputOK(pCon, pDrv->Out.pStrmOut);
2178	if (fIsOK)
2179	{
2180	rc = pCon->pfnEnableOut(pCon, pDrv->Out.pStrmOut, true /* fEnable */);
2181	fIsOK = RT_SUCCESS(rc);
2182	}
2183
2184	if (!fIsOK)
2185	{
2186	/*
2187	* Only primary drivers are critical for the VM to run. Everything else
2188	* might not worth showing an own error message box in the GUI.
2189	*/
2190	if (!(pDrv->Flags & PDMAUDIODRVFLAG_PRIMARY))
2191	continue;
2192
2193	LogRel(("SB16: Warning: Unable to enable/use output for LUN#%RU8\n", uLUN));
2194
2195	pCon->pfnDestroyOut(pCon, pDrv->Out.pStrmOut);
2196	pDrv->Out.pStrmOut = NULL;
2197
2198	pThis->pDrv->pfnInitNull(pThis->pDrv);
2199
2200	PDMDevHlpVMSetRuntimeError(pDevIns, 0 /fFlags/, "HostAudioNotResponding",
2201	N_("No audio devices could be opened. Selecting the NULL audio backend "
2202	"with the consequence that no sound is audible"));
2203	}
2204
2205	uLUN++;
2206	}
2207
2208	if (RT_SUCCESS(rc))
2209	{
2210	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, sb16TimerIO, pThis,
2211	TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "SB16 IO timer", &pThis->pTimerIO);
2212	if (RT_FAILURE(rc))
2213	AssertMsgFailedReturn(("Error creating I/O timer, rc=%Rrc\n", rc), rc);
2214	else
2215	{
2216	pThis->uTicksIO = PDMDevHlpTMTimeVirtGetFreq(pDevIns) / 200; /** Hz. @todo Make this configurable! */
2217	if (pThis->uTicksIO < 100)
2218	pThis->uTicksIO = 100;
2219	LogFunc(("I/O timer ticks=%RU64\n", pThis->uTicksIO));
2220
2221	/* Fire off timer. */
2222	TMTimerSet(pThis->pTimerIO, TMTimerGet(pThis->pTimerIO) + pThis->uTicksIO);
2223	}
2224	}
2225
2226	return VINF_SUCCESS;
2227	}
2228
2229	const PDMDEVREG g_DeviceSB16 =
2230	{
2231	/* u32Version */
2232	PDM_DEVREG_VERSION,
2233	/* szName */
2234	"sb16",
2235	/* szRCMod */
2236	"",
2237	/* szR0Mod */
2238	"",
2239	/* pszDescription */
2240	"Sound Blaster 16 Controller",
2241	/* fFlags */
2242	PDM_DEVREG_FLAGS_DEFAULT_BITS,
2243	/* fClass */
2244	PDM_DEVREG_CLASS_AUDIO,
2245	/* cMaxInstances */
2246	1,
2247	/* cbInstance */
2248	sizeof(SB16STATE),
2249	/* pfnConstruct */
2250	sb16Construct,
2251	/* pfnDestruct */
2252	sb16Destruct,
2253	/* pfnRelocate */
2254	NULL,
2255	/* pfnMemSetup */
2256	NULL,
2257	/* pfnPowerOn */
2258	NULL,
2259	/* pfnReset */
2260	sb16DevReset,
2261	/* pfnSuspend */
2262	NULL,
2263	/* pfnResume */
2264	NULL,
2265	/* pfnAttach */
2266	NULL,
2267	/* pfnDetach */
2268	NULL,
2269	/* pfnQueryInterface */
2270	NULL,
2271	/* pfnInitComplete */
2272	NULL,
2273	/* pfnPowerOff */
2274	NULL,
2275	/* pfnSoftReset */
2276	NULL,
2277	/* u32VersionEnd */
2278	PDM_DEVREG_VERSION
2279	};

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source: vbox/trunk/src/VBox/Devices/Audio/DevSB16.cpp@ 58600

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