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source: vbox/trunk/src/VBox/Devices/Audio/DevSB16.cpp@ 90778

Last change on this file since 90778 was 90016, checked in by vboxsync, 3 years ago
Audio: Before calling AudioHlpFileWrite test on the pFileXxxx variable rather than on the debug-enabled one, as the latter can still be NULL even if debug is enabled (say, if we couldn't open the file for one reason or another). bugref:9890
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 111.4 KB

Line
1	/* $Id: DevSB16.cpp 90016 2021-07-04 21:19:22Z vboxsync $ */
2	/** @file
3	* DevSB16 - VBox SB16 Audio Controller.
4	*/
5
6	/*
7	* Copyright (C) 2015-2021 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on: sb16.c from QEMU AUDIO subsystem (r3917).
19	* QEMU Soundblaster 16 emulation
20	*
21	* Copyright (c) 2003-2005 Vassili Karpov (malc)
22	*
23	* Permission is hereby granted, free of charge, to any person obtaining a copy
24	* of this software and associated documentation files (the "Software"), to deal
25	* in the Software without restriction, including without limitation the rights
26	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
27	* copies of the Software, and to permit persons to whom the Software is
28	* furnished to do so, subject to the following conditions:
29	*
30	* The above copyright notice and this permission notice shall be included in
31	* all copies or substantial portions of the Software.
32	*
33	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
34	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
35	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
36	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
37	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
38	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
39	* THE SOFTWARE.
40	*/
41
42
43	/*********************************************************************************************************************************
44	* Header Files *
45	*********************************************************************************************************************************/
46	#define LOG_GROUP LOG_GROUP_DEV_SB16
47	#include <VBox/log.h>
48	#include <iprt/assert.h>
49	#include <iprt/file.h>
50	#ifdef IN_RING3
51	# include <iprt/mem.h>
52	# include <iprt/string.h>
53	# include <iprt/uuid.h>
54	#endif
55
56	#include <VBox/vmm/pdmdev.h>
57	#include <VBox/vmm/pdmaudioifs.h>
58	#include <VBox/vmm/pdmaudioinline.h>
59	#include <VBox/AssertGuest.h>
60
61	#include "VBoxDD.h"
62
63	#include "AudioMixBuffer.h"
64	#include "AudioMixer.h"
65	#include "AudioHlp.h"
66
67
68	/*********************************************************************************************************************************
69	* Defined Constants And Macros *
70	*********************************************************************************************************************************/
71	/** Default timer frequency (in Hz). */
72	#define SB16_TIMER_HZ_DEFAULT 100
73	/** The maximum number of separate streams we currently implement.
74	* Currently we only support one stream only, namely the output stream. */
75	#define SB16_MAX_STREAMS 1
76	/** The (zero-based) index of the output stream in \a aStreams. */
77	#define SB16_IDX_OUT 0
78
79	/** Current saved state version. */
80	#define SB16_SAVE_STATE_VERSION 2
81	/** The version used in VirtualBox version 3.0 and earlier. This didn't include the config dump. */
82	#define SB16_SAVE_STATE_VERSION_VBOX_30 1
83
84
85	/*********************************************************************************************************************************
86	* Global Variables *
87	*********************************************************************************************************************************/
88	static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992.";
89
90
91
92	/*********************************************************************************************************************************
93	* Structures and Typedefs *
94	*********************************************************************************************************************************/
95	/** Pointer to the SB16 state. */
96	typedef struct SB16STATE *PSB16STATE;
97
98	/**
99	* The internal state of a SB16 stream.
100	*/
101	typedef struct SB16STREAMSTATE
102	{
103	/** Flag indicating whether this stream is in enabled state or not. */
104	bool fEnabled;
105	/** Set if we've registered the asynchronous update job. */
106	bool fRegisteredAsyncUpdateJob;
107	/** DMA cache to read data from / write data to. */
108	PRTCIRCBUF pCircBuf;
109	/** Current circular buffer read offset (for tracing & logging). */
110	uint64_t offRead;
111	/** Current circular buffer write offset (for tracing & logging). */
112	uint64_t offWrite;
113
114	/** Size of the DMA buffer (pCircBuf) in bytes. */
115	uint32_t StatDmaBufSize;
116	/** Number of used bytes in the DMA buffer (pCircBuf). */
117	uint32_t StatDmaBufUsed;
118	} SB16STREAMSTATE;
119	/** Pointer to internal state of an SB16 stream. */
120	typedef SB16STREAMSTATE *PSB16STREAMSTATE;
121
122	/**
123	* Structure defining a (host backend) driver stream.
124	* Each driver has its own instances of audio mixer streams, which then
125	* can go into the same (or even different) audio mixer sinks.
126	*/
127	typedef struct SB16DRIVERSTREAM
128	{
129	/** Associated mixer stream handle. */
130	R3PTRTYPE(PAUDMIXSTREAM) pMixStrm;
131	/** The stream's current configuration. */
132	} SB16DRIVERSTREAM, *PSB16DRIVERSTREAM;
133
134	/**
135	* Struct for tracking a host backend driver, i.e. our per-LUN data.
136	*/
137	typedef struct SB16DRIVER
138	{
139	/** Node for storing this driver in our device driver list of SB16STATE. */
140	RTLISTNODER3 Node;
141	/** Pointer to SB16 controller (state). */
142	R3PTRTYPE(PSB16STATE) pSB16State;
143	/** Pointer to attached driver base interface. */
144	R3PTRTYPE(PPDMIBASE) pDrvBase;
145	/** Audio connector interface to the underlying host backend. */
146	R3PTRTYPE(PPDMIAUDIOCONNECTOR) pConnector;
147	/** Stream for output. */
148	SB16DRIVERSTREAM Out;
149	/** LUN # to which this driver has been assigned. */
150	uint8_t uLUN;
151	/** Whether this driver is in an attached state or not. */
152	bool fAttached;
153	/** The LUN description. */
154	char szDesc[48 - 2];
155	} SB16DRIVER;
156	/** Pointer to the per-LUN data. */
157	typedef SB16DRIVER *PSB16DRIVER;
158
159	/**
160	* Runtime configurable debug stuff for a SB16 stream.
161	*/
162	typedef struct SB16STREAMDEBUGRT
163	{
164	/** Whether debugging is enabled or not. */
165	bool fEnabled;
166	uint8_t Padding[7];
167	/** File for dumping DMA reads / writes.
168	* For input streams, this dumps data being written to the device DMA,
169	* whereas for output streams this dumps data being read from the device DMA. */
170	R3PTRTYPE(PAUDIOHLPFILE) pFileDMA;
171	} SB16STREAMDEBUGRT;
172
173	/**
174	* Debug stuff for a SB16 stream.
175	*/
176	typedef struct SB16STREAMDEBUG
177	{
178	/** Runtime debug stuff. */
179	SB16STREAMDEBUGRT Runtime;
180	} SB16STREAMDEBUG;
181
182	/**
183	* Structure for keeping a SB16 hardware stream configuration.
184	*/
185	typedef struct SB16STREAMHWCFG
186	{
187	/** IRQ # to use. */
188	uint8_t uIrq;
189	/** Low DMA channel to use. */
190	uint8_t uDmaChanLow;
191	/** High DMA channel to use. */
192	uint8_t uDmaChanHigh;
193	/** IO port to use. */
194	RTIOPORT uPort;
195	/** DSP version to expose. */
196	uint16_t uVer;
197	} SB16STREAMHWCFG;
198
199	/**
200	* Structure for a SB16 stream.
201	*/
202	typedef struct SB16STREAM
203	{
204	/** The stream's own index in \a aStreams of SB16STATE.
205	* Set to UINT8_MAX if not set (yet). */
206	uint8_t uIdx;
207	uint16_t uTimerHz;
208	/** The timer for pumping data thru the attached LUN drivers. */
209	TMTIMERHANDLE hTimerIO;
210	/** The timer interval for pumping data thru the LUN drivers in timer ticks. */
211	uint64_t cTicksTimerIOInterval;
212	/** Timestamp of the last timer callback (sb16TimerIO).
213	* Used to calculate thetime actually elapsed between two timer callbacks.
214	* This currently ASSMUMES that we only have one single (output) stream. */
215	uint64_t tsTimerIO; /** @todo Make this a per-stream value. */
216	/** The stream's currentconfiguration. */
217	PDMAUDIOSTREAMCFG Cfg;
218	/** The stream's defaulthardware configuration, mostly done by jumper settings back then. */
219	SB16STREAMHWCFG HwCfgDefault;
220	/** The stream's hardware configuration set at runtime.
221	* Might differ from the default configuration above and is needed for live migration. */
222	SB16STREAMHWCFG HwCfgRuntime;
223
224	int fifo;
225	int dma_auto;
226	/** Whether to use the high (\c true) or the low (\c false) DMA channel. */
227	int fDmaUseHigh;
228	int can_write; /** @todo r=andy BUGBUG Value never gets set to 0! */
229	int time_const;
230	/** The DMA transfer (block)size in bytes. */
231	int32_t cbDmaBlockSize;
232	int32_t cbDmaLeft; /** Note: Can be < 0. Needs to 32-bit for backwards compatibility. */
233	/** Internal state of this stream. */
234	SB16STREAMSTATE State;
235	/** Debug stuff. */
236	SB16STREAMDEBUG Dbg;
237	} SB16STREAM;
238	/** Pointer to a SB16 stream */
239	typedef SB16STREAM *PSB16STREAM;
240
241	/**
242	* SB16 debug settings.
243	*/
244	typedef struct SB16STATEDEBUG
245	{
246	/** Whether debugging is enabled or not. */
247	bool fEnabled;
248	bool afAlignment[7];
249	/** Path where to dump the debug output to.
250	* Can be NULL, in which the system's temporary directory will be used then. */
251	R3PTRTYPE(char *) pszOutPath;
252	} SB16STATEDEBUG;
253
254	/**
255	* The SB16 state.
256	*/
257	typedef struct SB16STATE
258	{
259	/** Pointer to the device instance. */
260	PPDMDEVINSR3 pDevInsR3;
261	/** Pointer to the connector of the attached audio driver. */
262	PPDMIAUDIOCONNECTOR pDrv;
263
264	int dsp_in_idx;
265	int dsp_out_data_len;
266	int dsp_in_needed_bytes;
267	int cmd;
268	int highspeed;
269
270	int v2x6;
271
272	uint8_t csp_param;
273	uint8_t csp_value;
274	uint8_t csp_mode;
275	uint8_t csp_index;
276	uint8_t csp_regs[256];
277	uint8_t csp_reg83[4];
278	int csp_reg83r;
279	int csp_reg83w;
280
281	uint8_t dsp_in_data[10];
282	uint8_t dsp_out_data[50];
283	uint8_t test_reg;
284	uint8_t last_read_byte;
285	int nzero;
286
287	RTLISTANCHOR lstDrv;
288	/** IRQ timer */
289	TMTIMERHANDLE hTimerIRQ;
290	/** The base interface for LUN\#0. */
291	PDMIBASE IBase;
292
293	/** Array of all SB16 hardware audio stream. */
294	SB16STREAM aStreams[SB16_MAX_STREAMS];
295	/** The device's software mixer. */
296	R3PTRTYPE(PAUDIOMIXER) pMixer;
297	/** Audio sink for PCM output. */
298	R3PTRTYPE(PAUDMIXSINK) pSinkOut;
299
300	/** The two mixer I/O ports (port + 4). */
301	IOMIOPORTHANDLE hIoPortsMixer;
302	/** The 10 DSP I/O ports (port + 6). */
303	IOMIOPORTHANDLE hIoPortsDsp;
304
305	/** Debug settings. */
306	SB16STATEDEBUG Dbg;
307
308	/* mixer state */
309	uint8_t mixer_nreg;
310	uint8_t mixer_regs[256];
311
312	#ifdef VBOX_WITH_STATISTICS
313	STAMPROFILE StatTimerIO;
314	STAMCOUNTER StatBytesRead;
315	#endif
316	} SB16STATE;
317
318
319	/*********************************************************************************************************************************
320	* Internal Functions *
321	*********************************************************************************************************************************/
322	DECLINLINE(PDMAUDIODIR) sb16GetDirFromIndex(uint8_t uIdx);
323
324	static int sb16StreamEnable(PSB16STATE pThis, PSB16STREAM pStream, bool fEnable, bool fForce);
325	static void sb16StreamReset(PSB16STATE pThis, PSB16STREAM pStream);
326	static int sb16StreamOpen(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream);
327	static void sb16StreamClose(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream);
328	DECLINLINE(PAUDMIXSINK) sb16StreamIndexToSink(PSB16STATE pThis, uint8_t uIdx);
329	static void sb16StreamTransferScheduleNext(PSB16STATE pThis, PSB16STREAM pStream, uint32_t cSamples);
330	static int sb16StreamDoDmaOutput(PSB16STATE pThis, PSB16STREAM pStream, int uDmaChan, uint32_t offDma, uint32_t cbDma, uint32_t cbToRead, uint32_t *pcbRead);
331	static DECLCALLBACK(void) sb16StreamUpdateAsyncIoJob(PPDMDEVINS pDevIns, PAUDMIXSINK pSink, void *pvUser);
332
333	static DECLCALLBACK(void) sb16TimerIO(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser);
334	static DECLCALLBACK(void) sb16TimerIRQ(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser);
335	DECLINLINE(void) sb16TimerSet(PPDMDEVINS pDevIns, PSB16STREAM pStream, uint64_t cTicksToDeadline);
336
337	static void sb16SpeakerControl(PSB16STATE pThis, bool fOn);
338	static void sb16UpdateVolume(PSB16STATE pThis);
339
340
341
342	static void sb16SpeakerControl(PSB16STATE pThis, bool fOn)
343	{
344	RT_NOREF(pThis, fOn);
345
346	/** @todo This currently does nothing. */
347	}
348
349	static void sb16StreamControl(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream, bool fRun)
350	{
351	unsigned uDmaChan = pStream->fDmaUseHigh ? pStream->HwCfgRuntime.uDmaChanHigh : pStream->HwCfgRuntime.uDmaChanLow;
352
353	LogFunc(("fRun=%RTbool, fDmaUseHigh=%RTbool, uDmaChan=%u\n", fRun, pStream->fDmaUseHigh, uDmaChan));
354
355	PDMDevHlpDMASetDREQ(pThis->pDevInsR3, uDmaChan, fRun ? 1 : 0);
356
357	if (fRun != pStream->State.fEnabled)
358	{
359	if (fRun)
360	{
361	int rc = VINF_SUCCESS;
362
363	if (pStream->Cfg.Props.uHz > 0)
364	{
365	rc = sb16StreamOpen(pDevIns, pThis, pStream);
366	if (RT_SUCCESS(rc))
367	sb16UpdateVolume(pThis);
368	}
369	else
370	AssertFailed(); /** @todo Buggy code? */
371
372	if (RT_SUCCESS(rc))
373	{
374	rc = sb16StreamEnable(pThis, pStream, true /* fEnable /, false / fForce */);
375	if (RT_SUCCESS(rc))
376	{
377	sb16TimerSet(pDevIns, pStream, pStream->cTicksTimerIOInterval);
378
379	PDMDevHlpDMASchedule(pThis->pDevInsR3);
380	}
381	}
382	}
383	else
384	{
385	sb16StreamEnable(pThis, pStream, false /* fEnable /, false / fForce */);
386	}
387	}
388	}
389
390	#define DMA8_AUTO 1
391	#define DMA8_HIGH 2
392
393	static void sb16DmaCmdContinue8(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream)
394	{
395	sb16StreamControl(pDevIns, pThis, pStream, true /* fRun */);
396	}
397
398	static void sb16DmaCmd8(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream,
399	int mask, int dma_len)
400	{
401	pStream->fDmaUseHigh = 0;
402
403	if (-1 == pStream->time_const)
404	{
405	if (pStream->Cfg.Props.uHz == 0)
406	pStream->Cfg.Props.uHz = 11025;
407	}
408	else
409	{
410	int tmp = (256 - pStream->time_const);
411	pStream->Cfg.Props.uHz = (1000000 + (tmp / 2)) / tmp;
412	}
413
414	/** @todo r=bird: Use '(pThis->mixer_regs[0x0e] & 2) == 0 ? 1 : 2' like below? */
415	unsigned cShiftChannels = PDMAudioPropsChannels(&pStream->Cfg.Props) >= 2 ? 1 : 0;
416
417	if (dma_len != -1)
418	{
419	pStream->cbDmaBlockSize = dma_len << cShiftChannels;
420	}
421	else
422	{
423	/* This is apparently the only way to make both Act1/PL
424	and SecondReality/FC work
425
426	r=andy Wow, actually someone who remembers Future Crew :-)
427
428	Act1 sets block size via command 0x48 and it's an odd number
429	SR does the same with even number
430	Both use stereo, and Creatives own documentation states that
431	0x48 sets block size in bytes less one.. go figure */
432	pStream->cbDmaBlockSize &= ~cShiftChannels;
433	}
434
435	pStream->Cfg.Props.uHz >>= cShiftChannels;
436	pStream->cbDmaLeft = pStream->cbDmaBlockSize;
437	/* pThis->highspeed = (mask & DMA8_HIGH) != 0; */
438	pStream->dma_auto = (mask & DMA8_AUTO) != 0;
439
440	PDMAudioPropsInit(&pStream->Cfg.Props, 1 /* 8-bit */,
441	false /* fSigned */,
442	(pThis->mixer_regs[0x0e] & 2) == 0 ? 1 : 2 /* Mono/Stereo */,
443	pStream->Cfg.Props.uHz);
444
445	/** @todo Check if stream's DMA block size is properly aligned to the set PCM props. */
446
447	sb16DmaCmdContinue8(pDevIns, pThis, pStream);
448	sb16SpeakerControl(pThis, 1);
449	}
450
451	static void sb16DmaCmd(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream,
452	uint8_t cmd, uint8_t d0, int dma_len)
453	{
454	pStream->fDmaUseHigh = cmd < 0xc0;
455	pStream->fifo = (cmd >> 1) & 1;
456	pStream->dma_auto = (cmd >> 2) & 1;
457
458	pStream->Cfg.Props.fSigned = RT_BOOL(d0 & RT_BIT_32(4));
459	PDMAudioPropsSetChannels(&pStream->Cfg.Props, 1 + ((d0 >> 5) & 1));
460
461	switch (cmd >> 4)
462	{
463	case 11:
464	PDMAudioPropsSetSampleSize(&pStream->Cfg.Props, 2 /16-bit/);
465	break;
466
467	case 12:
468	PDMAudioPropsSetSampleSize(&pStream->Cfg.Props, 1 /8-bit/);
469	break;
470
471	default:
472	AssertFailed();
473	break;
474	}
475
476	if (-1 != pStream->time_const)
477	{
478	#if 1
479	int tmp = 256 - pStream->time_const;
480	pStream->Cfg.Props.uHz = (1000000 + (tmp / 2)) / tmp;
481	#else
482	/* pThis->freq = 1000000 / ((255 - pStream->time_const) << pThis->fmt_stereo); */
483	pThis->freq = 1000000 / ((255 - pStream->time_const));
484	#endif
485	pStream->time_const = -1;
486	}
487
488	pStream->cbDmaBlockSize = dma_len + 1;
489	pStream->cbDmaBlockSize <<= PDMAudioPropsSampleSize(&pStream->Cfg.Props) == 2 ? 1 : 0;
490	if (!pStream->dma_auto)
491	{
492	/*
493	* It is clear that for DOOM and auto-init this value
494	* shouldn't take stereo into account, while Miles Sound Systems
495	* setsound.exe with single transfer mode wouldn't work without it
496	* wonders of SB16 yet again.
497	*/
498	pStream->cbDmaBlockSize <<= PDMAudioPropsSampleSize(&pStream->Cfg.Props) == 2 ? 1 : 0;
499	}
500
501	pStream->cbDmaLeft = pStream->cbDmaBlockSize;
502
503	pThis->highspeed = 0;
504
505	/** @todo Check if stream's DMA block size is properly aligned to the set PCM props. */
506
507	sb16StreamControl(pDevIns, pThis, pStream, true /* fRun */);
508	sb16SpeakerControl(pThis, 1);
509	}
510
511	static inline void sb16DspSeData(PSB16STATE pThis, uint8_t val)
512	{
513	LogFlowFunc(("%#x\n", val));
514	if ((size_t) pThis->dsp_out_data_len < sizeof (pThis->dsp_out_data))
515	pThis->dsp_out_data[pThis->dsp_out_data_len++] = val;
516	}
517
518	static inline uint8_t sb16DspGetData(PSB16STATE pThis)
519	{
520	if (pThis->dsp_in_idx)
521	return pThis->dsp_in_data[--pThis->dsp_in_idx];
522	AssertMsgFailed(("DSP input buffer underflow\n"));
523	return 0;
524	}
525
526	static void sb16DspCmdLookup(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream, uint8_t cmd)
527	{
528	LogFlowFunc(("command %#x\n", cmd));
529
530	if (cmd > 0xaf && cmd < 0xd0)
531	{
532	if (cmd & 8) /** @todo Handle recording. */
533	LogFlowFunc(("ADC not yet supported (command %#x)\n", cmd));
534
535	switch (cmd >> 4)
536	{
537	case 11:
538	case 12:
539	break;
540	default:
541	LogFlowFunc(("%#x wrong bits\n", cmd));
542	}
543
544	pThis->dsp_in_needed_bytes = 3;
545	}
546	else
547	{
548	pThis->dsp_in_needed_bytes = 0;
549
550	/** @todo Use a mapping table with
551	* - a command verb (binary search)
552	* - required bytes
553	* - function callback handler
554	*/
555
556	switch (cmd)
557	{
558	case 0x03: /* ASP Status */
559	sb16DspSeData(pThis, 0x10); /* pThis->csp_param); */
560	goto warn;
561
562	case 0x04: /* DSP Status (Obsolete) / ASP ??? */
563	pThis->dsp_in_needed_bytes = 1;
564	goto warn;
565
566	case 0x05: /* ASP ??? */
567	pThis->dsp_in_needed_bytes = 2;
568	goto warn;
569
570	case 0x08: /* ??? */
571	/* __asm__ ("int3"); */
572	goto warn;
573
574	case 0x09: /* ??? */
575	sb16DspSeData(pThis, 0xf8);
576	goto warn;
577
578	case 0x0e: /* ??? */
579	pThis->dsp_in_needed_bytes = 2;
580	goto warn;
581
582	case 0x0f: /* ??? */
583	pThis->dsp_in_needed_bytes = 1;
584	goto warn;
585
586	case 0x10: /* Direct mode DAC */
587	pThis->dsp_in_needed_bytes = 1;
588	goto warn;
589
590	case 0x14: /* DAC DMA, 8-bit, uncompressed */
591	pThis->dsp_in_needed_bytes = 2;
592	pStream->cbDmaBlockSize = 0;
593	break;
594
595	case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */
596	sb16DmaCmd8(pDevIns, pThis, pStream, DMA8_AUTO, -1);
597	break;
598
599	case 0x20: /* Direct ADC, Juice/PL */
600	sb16DspSeData(pThis, 0xff);
601	goto warn;
602
603	case 0x35: /* MIDI Read Interrupt + Write Poll (UART) */
604	LogRelMax2(32, ("SB16: MIDI support not implemented yet\n"));
605	break;
606
607	case 0x40: /* Set Time Constant */
608	pStream->time_const = -1;
609	pThis->dsp_in_needed_bytes = 1;
610	break;
611
612	case 0x41: /* Set sample rate for input */
613	pStream->Cfg.Props.uHz = 0; /** @todo r=andy Why do we reset output stuff here? */
614	pStream->time_const = -1;
615	pThis->dsp_in_needed_bytes = 2;
616	break;
617
618	case 0x42: /* Set sample rate for output */
619	pStream->Cfg.Props.uHz = 0;
620	pStream->time_const = -1;
621	pThis->dsp_in_needed_bytes = 2;
622	goto warn;
623
624	case 0x45: /* Continue Auto-Initialize DMA, 8-bit */
625	sb16DspSeData(pThis, 0xaa);
626	goto warn;
627
628	case 0x47: /* Continue Auto-Initialize DMA, 16-bit */
629	break;
630
631	case 0x48: /* Set DMA Block Size */
632	pThis->dsp_in_needed_bytes = 2;
633	break;
634
635	case 0x74: /* DMA DAC, 4-bit ADPCM */
636	pThis->dsp_in_needed_bytes = 2;
637	LogFlowFunc(("4-bit ADPCM not implemented yet\n"));
638	break;
639
640	case 0x75: /* DMA DAC, 4-bit ADPCM Reference */
641	pThis->dsp_in_needed_bytes = 2;
642	LogFlowFunc(("DMA DAC, 4-bit ADPCM Reference not implemented\n"));
643	break;
644
645	case 0x76: /* DMA DAC, 2.6-bit ADPCM */
646	pThis->dsp_in_needed_bytes = 2;
647	LogFlowFunc(("DMA DAC, 2.6-bit ADPCM not implemented yet\n"));
648	break;
649
650	case 0x77: /* DMA DAC, 2.6-bit ADPCM Reference */
651	pThis->dsp_in_needed_bytes = 2;
652	LogFlowFunc(("ADPCM reference not implemented yet\n"));
653	break;
654
655	case 0x7d: /* Auto-Initialize DMA DAC, 4-bit ADPCM Reference */
656	LogFlowFunc(("Autio-Initialize DMA DAC, 4-bit ADPCM reference not implemented yet\n"));
657	break;
658
659	case 0x7f: /* Auto-Initialize DMA DAC, 16-bit ADPCM Reference */
660	LogFlowFunc(("Autio-Initialize DMA DAC, 2.6-bit ADPCM Reference not implemented yet\n"));
661	break;
662
663	case 0x80: /* Silence DAC */
664	pThis->dsp_in_needed_bytes = 2;
665	break;
666
667	case 0x90: /* Auto-Initialize DMA DAC, 8-bit (High Speed) */
668	RT_FALL_THROUGH();
669	case 0x91: /* Normal DMA DAC, 8-bit (High Speed) */
670	sb16DmaCmd8(pDevIns, pThis, pStream, (((cmd & 1) == 0) ? 1 : 0) \| DMA8_HIGH, -1);
671	break;
672
673	case 0xd0: /* Halt DMA operation. 8bit */
674	sb16StreamControl(pDevIns, pThis, pStream, false /* fRun */);
675	break;
676
677	case 0xd1: /* Speaker on */
678	sb16SpeakerControl(pThis, true /* fOn */);
679	break;
680
681	case 0xd3: /* Speaker off */
682	sb16SpeakerControl(pThis, false /* fOn */);
683	break;
684
685	case 0xd4: /* Continue DMA operation, 8-bit */
686	/* KQ6 (or maybe Sierras audblst.drv in general) resets
687	the frequency between halt/continue */
688	sb16DmaCmdContinue8(pDevIns, pThis, pStream);
689	break;
690
691	case 0xd5: /* Halt DMA operation, 16-bit */
692	sb16StreamControl(pDevIns, pThis, pStream, false /* fRun */);
693	break;
694
695	case 0xd6: /* Continue DMA operation, 16-bit */
696	sb16StreamControl(pDevIns, pThis, pStream, true /* fRun */);
697	break;
698
699	case 0xd9: /* Exit auto-init DMA after this block, 16-bit */
700	pStream->dma_auto = 0;
701	break;
702
703	case 0xda: /* Exit auto-init DMA after this block, 8-bit */
704	pStream->dma_auto = 0;
705	break;
706
707	case 0xe0: /* DSP identification */
708	pThis->dsp_in_needed_bytes = 1;
709	break;
710
711	case 0xe1: /* DSP version */
712	sb16DspSeData(pThis, RT_LO_U8(pStream->HwCfgRuntime.uVer));
713	sb16DspSeData(pThis, RT_HI_U8(pStream->HwCfgRuntime.uVer));
714	break;
715
716	case 0xe2: /* ??? */
717	pThis->dsp_in_needed_bytes = 1;
718	goto warn;
719
720	case 0xe3: /* DSP copyright */
721	{
722	for (int i = sizeof(e3) - 1; i >= 0; --i)
723	sb16DspSeData(pThis, e3[i]);
724	break;
725	}
726
727	case 0xe4: /* Write test register */
728	pThis->dsp_in_needed_bytes = 1;
729	break;
730
731	case 0xe7: /* ??? */
732	LogFlowFunc(("Attempt to probe for ESS (0xe7)?\n"));
733	break;
734
735	case 0xe8: /* Read test register */
736	sb16DspSeData(pThis, pThis->test_reg);
737	break;
738
739	case 0xf2: /* IRQ Request, 8-bit */
740	RT_FALL_THROUGH();
741	case 0xf3: /* IRQ Request, 16-bit */
742	{
743	sb16DspSeData(pThis, 0xaa);
744	pThis->mixer_regs[0x82] \|= (cmd == 0xf2) ? 1 : 2;
745	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 1);
746	break;
747	}
748
749	case 0xf8: /* Undocumented, used by old Creative diagnostic programs */
750	sb16DspSeData(pThis, 0);
751	goto warn;
752
753	case 0xf9: /* ??? */
754	pThis->dsp_in_needed_bytes = 1;
755	goto warn;
756
757	case 0xfa: /* ??? */
758	sb16DspSeData(pThis, 0);
759	goto warn;
760
761	case 0xfc: /* ??? */
762	sb16DspSeData(pThis, 0);
763	goto warn;
764
765	default:
766	LogFunc(("Unrecognized DSP command %#x, ignored\n", cmd));
767	break;
768	}
769	}
770
771	exit:
772
773	if (!pThis->dsp_in_needed_bytes)
774	pThis->cmd = -1;
775	else
776	pThis->cmd = cmd;
777
778	return;
779
780	warn:
781	LogFunc(("warning: command %#x,%d is not truly understood yet\n", cmd, pThis->dsp_in_needed_bytes));
782	goto exit;
783	}
784
785	DECLINLINE(uint16_t) sb16DspGetLoHi(PSB16STATE pThis)
786	{
787	const uint8_t hi = sb16DspGetData(pThis);
788	const uint8_t lo = sb16DspGetData(pThis);
789	return RT_MAKE_U16(lo, hi);
790	}
791
792	DECLINLINE(uint16_t) sb16DspGetHiLo(PSB16STATE pThis)
793	{
794	const uint8_t lo = sb16DspGetData(pThis);
795	const uint8_t hi = sb16DspGetData(pThis);
796	return RT_MAKE_U16(lo, hi);
797	}
798
799	static void sb16DspCmdComplete(PPDMDEVINS pDevIns, PSB16STATE pThis)
800	{
801	LogFlowFunc(("Command %#x, in_index %d, needed_bytes %d\n", pThis->cmd, pThis->dsp_in_idx, pThis->dsp_in_needed_bytes));
802
803	int v0, v1, v2;
804
805	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT]; /** @ŧodo Improve this. */
806
807	if (pThis->cmd > 0xaf && pThis->cmd < 0xd0)
808	{
809	v2 = sb16DspGetData(pThis);
810	v1 = sb16DspGetData(pThis);
811	v0 = sb16DspGetData(pThis);
812
813	if (pThis->cmd & 8)
814	LogFlowFunc(("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", pThis->cmd, v0, v1, v2));
815	else
816	{
817	LogFlowFunc(("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", pThis->cmd, v0, v1, v2));
818	sb16DmaCmd(pDevIns, pThis, pStream, pThis->cmd, v0, v1 + (v2 << 8));
819	}
820	}
821	else
822	{
823	switch (pThis->cmd)
824	{
825	case 0x04:
826	pThis->csp_mode = sb16DspGetData(pThis);
827	pThis->csp_reg83r = 0;
828	pThis->csp_reg83w = 0;
829	LogFlowFunc(("CSP command 0x04: mode=%#x\n", pThis->csp_mode));
830	break;
831
832	case 0x05:
833	pThis->csp_param = sb16DspGetData(pThis);
834	pThis->csp_value = sb16DspGetData(pThis);
835	LogFlowFunc(("CSP command 0x05: param=%#x value=%#x\n", pThis->csp_param, pThis->csp_value));
836	break;
837
838	case 0x0e:
839	v0 = sb16DspGetData(pThis);
840	v1 = sb16DspGetData(pThis);
841	LogFlowFunc(("write CSP register %d <- %#x\n", v1, v0));
842	if (v1 == 0x83)
843	{
844	LogFlowFunc(("0x83[%d] <- %#x\n", pThis->csp_reg83r, v0));
845	pThis->csp_reg83[pThis->csp_reg83r % 4] = v0;
846	pThis->csp_reg83r += 1;
847	}
848	else
849	pThis->csp_regs[v1] = v0;
850	break;
851
852	case 0x0f:
853	v0 = sb16DspGetData(pThis);
854	LogFlowFunc(("read CSP register %#x -> %#x, mode=%#x\n", v0, pThis->csp_regs[v0], pThis->csp_mode));
855	if (v0 == 0x83)
856	{
857	LogFlowFunc(("0x83[%d] -> %#x\n", pThis->csp_reg83w, pThis->csp_reg83[pThis->csp_reg83w % 4]));
858	sb16DspSeData(pThis, pThis->csp_reg83[pThis->csp_reg83w % 4]);
859	pThis->csp_reg83w += 1;
860	}
861	else
862	sb16DspSeData(pThis, pThis->csp_regs[v0]);
863	break;
864
865	case 0x10:
866	v0 = sb16DspGetData(pThis);
867	LogFlowFunc(("cmd 0x10 d0=%#x\n", v0));
868	break;
869
870	case 0x14:
871	sb16DmaCmd8(pDevIns, pThis, pStream, 0, sb16DspGetLoHi(pThis) + 1);
872	break;
873
874	case 0x22: /* Sets the master volume. */
875	/** @todo Setting the master volume is not implemented yet. */
876	break;
877
878	case 0x40: /* Sets the timer constant; SB16 is able to use sample rates via 0x41 instead. */
879	pStream->time_const = sb16DspGetData(pThis);
880	LogFlowFunc(("set time const %d\n", pStream->time_const));
881	break;
882
883	case 0x42: /* Sets the input rate (in Hz). */
884	#if 0
885	LogFlowFunc(("cmd 0x42 might not do what it think it should\n"));
886	#endif
887	RT_FALL_THROUGH(); /** @todo BUGBUG FT2 sets output freq with this, go figure. */
888
889	case 0x41: /* Sets the output rate (in Hz). */
890	pStream->Cfg.Props.uHz = sb16DspGetHiLo(pThis);
891	LogFlowFunc(("set freq to %RU16Hz\n", pStream->Cfg.Props.uHz));
892	break;
893
894	case 0x48:
895	pStream->cbDmaBlockSize = sb16DspGetLoHi(pThis) + 1;
896	LogFlowFunc(("set dma block len %d\n", pStream->cbDmaBlockSize));
897	break;
898
899	case 0x74:
900	case 0x75:
901	case 0x76:
902	case 0x77:
903	/* ADPCM stuff, ignore. */
904	break;
905
906	case 0x80: /* Sets the IRQ. */
907	sb16StreamTransferScheduleNext(pThis, pStream, sb16DspGetLoHi(pThis) + 1);
908	break;
909
910	case 0xe0:
911	v0 = sb16DspGetData(pThis);
912	pThis->dsp_out_data_len = 0;
913	LogFlowFunc(("E0=%#x\n", v0));
914	sb16DspSeData(pThis, ~v0);
915	break;
916
917	case 0xe2:
918	v0 = sb16DspGetData(pThis);
919	LogFlowFunc(("E2=%#x\n", v0));
920	break;
921
922	case 0xe4:
923	pThis->test_reg = sb16DspGetData(pThis);
924	break;
925
926	case 0xf9:
927	v0 = sb16DspGetData(pThis);
928	switch (v0)
929	{
930	case 0x0e:
931	sb16DspSeData(pThis, 0xff);
932	break;
933
934	case 0x0f:
935	sb16DspSeData(pThis, 0x07);
936	break;
937
938	case 0x37:
939	sb16DspSeData(pThis, 0x38);
940	break;
941
942	default:
943	sb16DspSeData(pThis, 0x00);
944	break;
945	}
946	break;
947
948	default:
949	LogRel2(("SB16: Unrecognized command %#x, skipping\n", pThis->cmd));
950	return;
951	}
952	}
953
954	pThis->cmd = -1;
955	return;
956	}
957
958	static void sb16DspCmdResetLegacy(PSB16STATE pThis)
959	{
960	LogFlowFuncEnter();
961
962	/* Disable speaker(s). */
963	sb16SpeakerControl(pThis, false /* fOn */);
964
965	/*
966	* Reset all streams.
967	*/
968	for (unsigned i = 0; i < SB16_MAX_STREAMS; i++)
969	sb16StreamReset(pThis, &pThis->aStreams[i]);
970	}
971
972	static void sb16DspCmdReset(PSB16STATE pThis)
973	{
974	pThis->mixer_regs[0x82] = 0;
975	pThis->dsp_in_idx = 0;
976	pThis->dsp_out_data_len = 0;
977	pThis->dsp_in_needed_bytes = 0;
978	pThis->nzero = 0;
979	pThis->highspeed = 0;
980	pThis->v2x6 = 0;
981	pThis->cmd = -1;
982
983	sb16DspSeData(pThis, 0xaa);
984
985	sb16DspCmdResetLegacy(pThis);
986	}
987
988	/**
989	* @callback_method_impl{PFNIOMIOPORTNEWOUT}
990	*/
991	static DECLCALLBACK(VBOXSTRICTRC) sb16IoPortDspWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
992	{
993	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
994	RT_NOREF(pvUser, cb);
995
996	/** @todo Figure out how we can distinguish between streams. DSP port #, e.g. 0x220? */
997	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
998
999	LogFlowFunc(("write %#x <- %#x\n", offPort, u32));
1000	switch (offPort)
1001	{
1002	case 0:
1003	switch (u32)
1004	{
1005	case 0x00:
1006	{
1007	if (pThis->v2x6 == 1)
1008	{
1009	if (0 && pThis->highspeed)
1010	{
1011	pThis->highspeed = 0;
1012	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 0);
1013	sb16StreamControl(pDevIns, pThis, pStream, false /* fRun */);
1014	}
1015	else
1016	sb16DspCmdReset(pThis);
1017	}
1018	pThis->v2x6 = 0;
1019	break;
1020	}
1021
1022	case 0x01:
1023	case 0x03: /* FreeBSD kludge */
1024	pThis->v2x6 = 1;
1025	break;
1026
1027	case 0xc6:
1028	pThis->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */
1029	break;
1030
1031	case 0xb8: /* Panic */
1032	sb16DspCmdReset(pThis);
1033	break;
1034
1035	case 0x39:
1036	sb16DspSeData(pThis, 0x38);
1037	sb16DspCmdReset(pThis);
1038	pThis->v2x6 = 0x39;
1039	break;
1040
1041	default:
1042	pThis->v2x6 = u32;
1043	break;
1044	}
1045	break;
1046
1047	case 6: /* Write data or command \| write status */
1048	#if 0
1049	if (pThis->highspeed)
1050	break;
1051	#endif
1052	if (0 == pThis->dsp_in_needed_bytes)
1053	{
1054	sb16DspCmdLookup(pDevIns, pThis, pStream, u32);
1055	}
1056	else
1057	{
1058	if (pThis->dsp_in_idx == sizeof (pThis->dsp_in_data))
1059	{
1060	AssertMsgFailed(("DSP input data overrun\n"));
1061	}
1062	else
1063	{
1064	pThis->dsp_in_data[pThis->dsp_in_idx++] = u32;
1065	if (pThis->dsp_in_idx == pThis->dsp_in_needed_bytes)
1066	{
1067	pThis->dsp_in_needed_bytes = 0;
1068	sb16DspCmdComplete(pDevIns, pThis);
1069	}
1070	}
1071	}
1072	break;
1073
1074	default:
1075	LogFlowFunc(("offPort=%#x, u32=%#x)\n", offPort, u32));
1076	break;
1077	}
1078
1079	return VINF_SUCCESS;
1080	}
1081
1082
1083	/**
1084	* @callback_method_impl{PFNIOMIOPORTNEWIN}
1085	*/
1086	static DECLCALLBACK(VBOXSTRICTRC) sb16IoPortDspRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
1087	{
1088	RT_NOREF(pvUser, cb);
1089
1090	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
1091
1092	uint32_t retval;
1093	int ack = 0;
1094
1095	/** @todo Figure out how we can distinguish between streams. */
1096	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
1097
1098	/** @todo reject non-byte access?
1099	* The spec does not mention a non-byte access so we should check how real hardware behaves. */
1100
1101	switch (offPort)
1102	{
1103	case 0: /* reset */
1104	retval = 0xff;
1105	break;
1106
1107	case 4: /* read data */
1108	if (pThis->dsp_out_data_len)
1109	{
1110	retval = pThis->dsp_out_data[--pThis->dsp_out_data_len];
1111	pThis->last_read_byte = retval;
1112	}
1113	else
1114	{
1115	if (pThis->cmd != -1)
1116	LogFlowFunc(("empty output buffer for command %#x\n", pThis->cmd));
1117	retval = pThis->last_read_byte;
1118	/* goto error; */
1119	}
1120	break;
1121
1122	case 6: /* 0 can write */
1123	retval = pStream->can_write ? 0 : 0x80;
1124	break;
1125
1126	case 7: /* timer interrupt clear */
1127	/* LogFlowFunc(("timer interrupt clear\n")); */
1128	retval = 0;
1129	break;
1130
1131	case 8: /* data available status \| irq 8 ack */
1132	retval = (!pThis->dsp_out_data_len \|\| pThis->highspeed) ? 0 : 0x80;
1133	if (pThis->mixer_regs[0x82] & 1)
1134	{
1135	ack = 1;
1136	pThis->mixer_regs[0x82] &= ~1;
1137	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 0);
1138	}
1139	break;
1140
1141	case 9: /* irq 16 ack */
1142	retval = 0xff;
1143	if (pThis->mixer_regs[0x82] & 2)
1144	{
1145	ack = 1;
1146	pThis->mixer_regs[0x82] &= ~2;
1147	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 0);
1148	}
1149	break;
1150
1151	default:
1152	LogFlowFunc(("warning: sb16IoPortDspRead %#x error\n", offPort));
1153	return VERR_IOM_IOPORT_UNUSED;
1154	}
1155
1156	if (!ack)
1157	LogFlowFunc(("read %#x -> %#x\n", offPort, retval));
1158
1159	*pu32 = retval;
1160	return VINF_SUCCESS;
1161	}
1162
1163
1164	/*********************************************************************************************************************************
1165	* Mixer functions *
1166	*********************************************************************************************************************************/
1167
1168	static uint8_t sb16MixRegToVol(PSB16STATE pThis, int reg)
1169	{
1170	/* The SB16 mixer has a 0 to -62dB range in 32 levels (2dB each step).
1171	* We use a 0 to -96dB range in 256 levels (0.375dB each step).
1172	* Only the top 5 bits of a mixer register are used.
1173	*/
1174	uint8_t steps = 31 - (pThis->mixer_regs[reg] >> 3);
1175	uint8_t vol = 255 - steps * 16 / 3; /* (2dB8) / (0.375dB8) */
1176	return vol;
1177	}
1178
1179	/**
1180	* Returns the device's current master volume.
1181	*
1182	* @param pThis SB16 state.
1183	* @param pVol Where to store the master volume information.
1184	*/
1185	DECLINLINE(void) sb16GetMasterVolume(PSB16STATE pThis, PPDMAUDIOVOLUME pVol)
1186	{
1187	/* There's no mute switch, only volume controls. */
1188	PDMAudioVolumeInitFromStereo(pVol, false /fMuted/, sb16MixRegToVol(pThis, 0x30), sb16MixRegToVol(pThis, 0x31));
1189	}
1190
1191	/**
1192	* Returns the device's current output stream volume.
1193	*
1194	* @param pThis SB16 state.
1195	* @param pVol Where to store the output stream volume information.
1196	*/
1197	DECLINLINE(void) sb16GetPcmOutVolume(PSB16STATE pThis, PPDMAUDIOVOLUME pVol)
1198	{
1199	/* There's no mute switch, only volume controls. */
1200	PDMAudioVolumeInitFromStereo(pVol, false /fMuted/, sb16MixRegToVol(pThis, 0x32), sb16MixRegToVol(pThis, 0x33));
1201	}
1202
1203	static void sb16UpdateVolume(PSB16STATE pThis)
1204	{
1205	PDMAUDIOVOLUME VolMaster;
1206	sb16GetMasterVolume(pThis, &VolMaster);
1207
1208	PDMAUDIOVOLUME VolOut;
1209	sb16GetPcmOutVolume(pThis, &VolOut);
1210
1211	/* Combine the master + output stream volume. */
1212	PDMAUDIOVOLUME VolCombined;
1213	PDMAudioVolumeCombine(&VolCombined, &VolMaster, &VolOut);
1214
1215	int rc2 = AudioMixerSinkSetVolume(pThis->pSinkOut, &VolCombined);
1216	AssertRC(rc2);
1217	}
1218
1219	static void sb16MixerReset(PSB16STATE pThis)
1220	{
1221	memset(pThis->mixer_regs, 0xff, 0x7f);
1222	memset(pThis->mixer_regs + 0x83, 0xff, sizeof (pThis->mixer_regs) - 0x83);
1223
1224	pThis->mixer_regs[0x02] = 4; /* master volume 3bits */
1225	pThis->mixer_regs[0x06] = 4; /* MIDI volume 3bits */
1226	pThis->mixer_regs[0x08] = 0; /* CD volume 3bits */
1227	pThis->mixer_regs[0x0a] = 0; /* voice volume 2bits */
1228
1229	/* d5=input filt, d3=lowpass filt, d1,d2=input source */
1230	pThis->mixer_regs[0x0c] = 0;
1231
1232	/* d5=output filt, d1=stereo switch */
1233	pThis->mixer_regs[0x0e] = 0;
1234
1235	/* voice volume L d5,d7, R d1,d3 */
1236	pThis->mixer_regs[0x04] = (12 << 4) \| 12;
1237	/* master ... */
1238	pThis->mixer_regs[0x22] = (12 << 4) \| 12;
1239	/* MIDI ... */
1240	pThis->mixer_regs[0x26] = (12 << 4) \| 12;
1241
1242	/* master/voice/MIDI L/R volume */
1243	for (int i = 0x30; i < 0x36; i++)
1244	pThis->mixer_regs[i] = 24 << 3; /* -14 dB */
1245
1246	/* treble/bass */
1247	for (int i = 0x44; i < 0x48; i++)
1248	pThis->mixer_regs[i] = 0x80;
1249
1250	/* Update the master (mixer) and PCM out volumes. */
1251	sb16UpdateVolume(pThis);
1252
1253	/*
1254	* Reset mixer sinks.
1255	*
1256	* Do the reset here instead of in sb16StreamReset();
1257	* the mixer sink(s) might still have data to be processed when an audio stream gets reset.
1258	*/
1259	if (pThis->pSinkOut)
1260	AudioMixerSinkReset(pThis->pSinkOut);
1261	}
1262
1263	static int magic_of_irq(int irq)
1264	{
1265	switch (irq)
1266	{
1267	case 5:
1268	return 2;
1269	case 7:
1270	return 4;
1271	case 9:
1272	return 1;
1273	case 10:
1274	return 8;
1275	default:
1276	break;
1277	}
1278
1279	LogFlowFunc(("bad irq %d\n", irq));
1280	return 2;
1281	}
1282
1283	static int irq_of_magic(int magic)
1284	{
1285	switch (magic)
1286	{
1287	case 1:
1288	return 9;
1289	case 2:
1290	return 5;
1291	case 4:
1292	return 7;
1293	case 8:
1294	return 10;
1295	default:
1296	break;
1297	}
1298
1299	LogFlowFunc(("bad irq magic %d\n", magic));
1300	return -1;
1301	}
1302
1303	static int sb16MixerWriteIndex(PSB16STATE pThis, PSB16STREAM pStream, uint8_t val)
1304	{
1305	RT_NOREF(pStream);
1306	pThis->mixer_nreg = val;
1307	return VINF_SUCCESS;
1308	}
1309
1310	#ifndef VBOX
1311	static uint32_t popcount(uint32_t u)
1312	{
1313	u = ((u&0x55555555) + ((u>>1)&0x55555555));
1314	u = ((u&0x33333333) + ((u>>2)&0x33333333));
1315	u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
1316	u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
1317	u = ( u&0x0000ffff) + (u>>16);
1318	return u;
1319	}
1320	#endif
1321
1322	static uint32_t lsbindex(uint32_t u)
1323	{
1324	#ifdef VBOX
1325	return u ? ASMBitFirstSetU32(u) - 1 : 32;
1326	#else
1327	return popcount((u & -(int32_t)u) - 1);
1328	#endif
1329	}
1330
1331	/* Convert SB16 to SB Pro mixer volume (left). */
1332	static inline void sb16ConvVolumeL(PSB16STATE pThis, unsigned reg, uint8_t val)
1333	{
1334	/* High nibble in SBP mixer. */
1335	pThis->mixer_regs[reg] = (pThis->mixer_regs[reg] & 0x0f) \| (val & 0xf0);
1336	}
1337
1338	/* Convert SB16 to SB Pro mixer volume (right). */
1339	static inline void sb16ConvVolumeR(PSB16STATE pThis, unsigned reg, uint8_t val)
1340	{
1341	/* Low nibble in SBP mixer. */
1342	pThis->mixer_regs[reg] = (pThis->mixer_regs[reg] & 0xf0) \| (val >> 4);
1343	}
1344
1345	/* Convert SB Pro to SB16 mixer volume (left + right). */
1346	static inline void sb16ConvVolumeOldToNew(PSB16STATE pThis, unsigned reg, uint8_t val)
1347	{
1348	/* Left channel. */
1349	pThis->mixer_regs[reg + 0] = (val & 0xf0) \| RT_BIT(3);
1350	/* Right channel (the register immediately following). */
1351	pThis->mixer_regs[reg + 1] = (val << 4) \| RT_BIT(3);
1352	}
1353
1354
1355	static int sb16MixerWriteData(PSB16STATE pThis, PSB16STREAM pStream, uint8_t val)
1356	{
1357	bool fUpdateMaster = false;
1358	bool fUpdateStream = false;
1359
1360	LogFlowFunc(("[%#x] <- %#x\n", pThis->mixer_nreg, val));
1361
1362	switch (pThis->mixer_nreg)
1363	{
1364	case 0x00:
1365	sb16MixerReset(pThis);
1366	/* And update the actual volume, too. */
1367	fUpdateMaster = true;
1368	fUpdateStream = true;
1369	break;
1370
1371	case 0x04: /* Translate from old style voice volume (L/R). */
1372	sb16ConvVolumeOldToNew(pThis, 0x32, val);
1373	fUpdateStream = true;
1374	break;
1375
1376	case 0x22: /* Translate from old style master volume (L/R). */
1377	sb16ConvVolumeOldToNew(pThis, 0x30, val);
1378	fUpdateMaster = true;
1379	break;
1380
1381	case 0x26: /* Translate from old style MIDI volume (L/R). */
1382	sb16ConvVolumeOldToNew(pThis, 0x34, val);
1383	break;
1384
1385	case 0x28: /* Translate from old style CD volume (L/R). */
1386	sb16ConvVolumeOldToNew(pThis, 0x36, val);
1387	break;
1388
1389	case 0x2E: /* Translate from old style line volume (L/R). */
1390	sb16ConvVolumeOldToNew(pThis, 0x38, val);
1391	break;
1392
1393	case 0x30: /* Translate to old style master volume (L). */
1394	sb16ConvVolumeL(pThis, 0x22, val);
1395	fUpdateMaster = true;
1396	break;
1397
1398	case 0x31: /* Translate to old style master volume (R). */
1399	sb16ConvVolumeR(pThis, 0x22, val);
1400	fUpdateMaster = true;
1401	break;
1402
1403	case 0x32: /* Translate to old style voice volume (L). */
1404	sb16ConvVolumeL(pThis, 0x04, val);
1405	fUpdateStream = true;
1406	break;
1407
1408	case 0x33: /* Translate to old style voice volume (R). */
1409	sb16ConvVolumeR(pThis, 0x04, val);
1410	fUpdateStream = true;
1411	break;
1412
1413	case 0x34: /* Translate to old style MIDI volume (L). */
1414	sb16ConvVolumeL(pThis, 0x26, val);
1415	break;
1416
1417	case 0x35: /* Translate to old style MIDI volume (R). */
1418	sb16ConvVolumeR(pThis, 0x26, val);
1419	break;
1420
1421	case 0x36: /* Translate to old style CD volume (L). */
1422	sb16ConvVolumeL(pThis, 0x28, val);
1423	break;
1424
1425	case 0x37: /* Translate to old style CD volume (R). */
1426	sb16ConvVolumeR(pThis, 0x28, val);
1427	break;
1428
1429	case 0x38: /* Translate to old style line volume (L). */
1430	sb16ConvVolumeL(pThis, 0x2E, val);
1431	break;
1432
1433	case 0x39: /* Translate to old style line volume (R). */
1434	sb16ConvVolumeR(pThis, 0x2E, val);
1435	break;
1436
1437	case 0x80:
1438	{
1439	int irq = irq_of_magic(val);
1440	LogRelMax2(64, ("SB16: Setting IRQ to %d\n", irq));
1441	if (irq > 0)
1442	pStream->HwCfgRuntime.uIrq = irq;
1443	break;
1444	}
1445
1446	case 0x81:
1447	{
1448	int dma = lsbindex(val & 0xf);
1449	int hdma = lsbindex(val & 0xf0);
1450	if ( dma != pStream->HwCfgRuntime.uDmaChanLow
1451	\|\| hdma != pStream->HwCfgRuntime.uDmaChanHigh)
1452	{
1453	LogRelMax2(64, ("SB16: Attempt to change DMA 8bit %d(%d), 16bit %d(%d)\n",
1454	dma, pStream->HwCfgRuntime.uDmaChanLow, hdma, pStream->HwCfgRuntime.uDmaChanHigh));
1455	}
1456	#if 0
1457	pStream->dma = dma;
1458	pStream->hdma = hdma;
1459	#endif
1460	break;
1461	}
1462
1463	case 0x82:
1464	LogRelMax2(64, ("SB16: Attempt to write into IRQ status register to %#x\n", val));
1465	return VINF_SUCCESS;
1466
1467	default:
1468	if (pThis->mixer_nreg >= 0x80)
1469	LogFlowFunc(("attempt to write mixer[%#x] <- %#x\n", pThis->mixer_nreg, val));
1470	break;
1471	}
1472
1473	pThis->mixer_regs[pThis->mixer_nreg] = val;
1474
1475	/* Update the master (mixer) volume. */
1476	if ( fUpdateMaster
1477	\|\| fUpdateStream)
1478	{
1479	sb16UpdateVolume(pThis);
1480	}
1481
1482	return VINF_SUCCESS;
1483	}
1484
1485	/**
1486	* @callback_method_impl{PFNIOMIOPORTNEWOUT}
1487	*/
1488	static DECLCALLBACK(VBOXSTRICTRC) sb16IoPortMixerWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
1489	{
1490	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
1491	RT_NOREF(pvUser);
1492
1493	/** @todo Figure out how we can distinguish between streams. */
1494	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
1495
1496	switch (cb)
1497	{
1498	case 1:
1499	switch (offPort)
1500	{
1501	case 0:
1502	sb16MixerWriteIndex(pThis, pStream, u32);
1503	break;
1504	case 1:
1505	sb16MixerWriteData(pThis, pStream, u32);
1506	break;
1507	default:
1508	AssertFailed();
1509	}
1510	break;
1511	case 2:
1512	sb16MixerWriteIndex(pThis, pStream, u32 & 0xff);
1513	sb16MixerWriteData(pThis, pStream, (u32 >> 8) & 0xff);
1514	break;
1515	default:
1516	ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d u32=%#x\n", offPort, cb, u32));
1517	break;
1518	}
1519	return VINF_SUCCESS;
1520	}
1521
1522	/**
1523	* @callback_method_impl{PFNIOMIOPORTNEWIN}
1524	*/
1525	static DECLCALLBACK(VBOXSTRICTRC) sb16IoPortMixerRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
1526	{
1527	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
1528	RT_NOREF(pvUser, cb, offPort);
1529
1530	#ifndef DEBUG_SB16_MOST
1531	if (pThis->mixer_nreg != 0x82)
1532	LogFlowFunc(("sb16IoPortMixerRead[%#x] -> %#x\n", pThis->mixer_nreg, pThis->mixer_regs[pThis->mixer_nreg]));
1533	#else
1534	LogFlowFunc(("sb16IoPortMixerRead[%#x] -> %#x\n", pThis->mixer_nreg, pThis->mixer_regs[pThis->mixer_nreg]));
1535	#endif
1536	*pu32 = pThis->mixer_regs[pThis->mixer_nreg];
1537	return VINF_SUCCESS;
1538	}
1539
1540
1541	/*********************************************************************************************************************************
1542	* DMA handling *
1543	*********************************************************************************************************************************/
1544
1545	/**
1546	* Worker for sb16DMARead.
1547	*/
1548
1549	/**
1550	* @callback_method_impl{FNDMATRANSFERHANDLER,
1551	* Worker callback for both DMA channels.}
1552	*/
1553	static DECLCALLBACK(uint32_t) sb16DMARead(PPDMDEVINS pDevIns, void *pvUser, unsigned uChannel, uint32_t off, uint32_t cb)
1554
1555	{
1556	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
1557	AssertPtr(pThis);
1558	PSB16STREAM pStream = (PSB16STREAM)pvUser;
1559	AssertPtr(pStream);
1560
1561	int till, copy, free;
1562
1563	if (pStream->cbDmaBlockSize <= 0)
1564	{
1565	LogFlowFunc(("invalid block size=%d uChannel=%d off=%d cb=%d\n", pStream->cbDmaBlockSize, uChannel, off, cb));
1566	return off;
1567	}
1568
1569	if (pStream->cbDmaLeft < 0)
1570	pStream->cbDmaLeft = pStream->cbDmaBlockSize;
1571
1572	free = cb;
1573
1574	copy = free;
1575	till = pStream->cbDmaLeft;
1576
1577	Log4Func(("pos=%d %d, till=%d, len=%d\n", off, free, till, cb));
1578
1579	if (copy >= till)
1580	{
1581	if (0 == pStream->dma_auto)
1582	{
1583	copy = till;
1584	}
1585	else
1586	{
1587	if (copy >= till + pStream->cbDmaBlockSize)
1588	copy = till; /* Make sure we won't skip IRQs. */
1589	}
1590	}
1591
1592	STAM_COUNTER_ADD(&pThis->StatBytesRead, copy);
1593
1594	uint32_t written = 0; /* Shut up GCC. */
1595	int rc = sb16StreamDoDmaOutput(pThis, pStream, uChannel, off, cb, copy, &written);
1596	AssertRC(rc);
1597
1598	/** @todo Convert the rest to uin32_t / size_t. */
1599	off = (off + (int)written) % cb;
1600	pStream->cbDmaLeft -= (int)written; /** @todo r=andy left_till_irq can be < 0. Correct? Revisit this. */
1601
1602	Log3Func(("pos %d/%d, free=%d, till=%d, copy=%d, written=%RU32, block_size=%d\n",
1603	off, cb, free, pStream->cbDmaLeft, copy, copy, pStream->cbDmaBlockSize));
1604
1605	if (pStream->cbDmaLeft <= 0)
1606	{
1607	pThis->mixer_regs[0x82] \|= (uChannel & 4) ? 2 : 1;
1608
1609	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 1);
1610
1611	if (0 == pStream->dma_auto) /** @todo r=andy BUGBUG Why do we first assert the IRQ if dma_auto is 0? Revisit this. */
1612	{
1613	sb16StreamControl(pDevIns, pThis, pStream, false /* fRun */);
1614	sb16SpeakerControl(pThis, 0);
1615	}
1616	}
1617
1618	while (pStream->cbDmaLeft <= 0)
1619	pStream->cbDmaLeft += pStream->cbDmaBlockSize;
1620
1621	return off;
1622	}
1623
1624
1625	/*********************************************************************************************************************************
1626	* Timer-related code *
1627	*********************************************************************************************************************************/
1628
1629	/**
1630	* @callback_method_impl{PFNTMTIMERDEV}
1631	*/
1632	static DECLCALLBACK(void) sb16TimerIRQ(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser)
1633	{
1634	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
1635	RT_NOREF(hTimer, pThis);
1636
1637	PSB16STREAM pStream = (PSB16STREAM)pvUser;
1638	AssertPtrReturnVoid(pStream);
1639
1640	LogFlowFuncEnter();
1641
1642	pStream->can_write = 1;
1643	PDMDevHlpISASetIrq(pDevIns, pStream->HwCfgRuntime.uIrq, 1);
1644	}
1645
1646	/**
1647	* Sets the stream's I/O timer to a new expiration time.
1648	*
1649	* @param pDevIns The device instance.
1650	* @param pStream SB16 stream to set timer for.
1651	* @param cTicksToDeadline The number of ticks to the new deadline.
1652	*/
1653	DECLINLINE(void) sb16TimerSet(PPDMDEVINS pDevIns, PSB16STREAM pStream, uint64_t cTicksToDeadline)
1654	{
1655	int rc = PDMDevHlpTimerSetRelative(pDevIns, pStream->hTimerIO, cTicksToDeadline, NULL /pu64Now/);
1656	AssertRC(rc);
1657	}
1658
1659	/**
1660	* @callback_method_impl{FNTMTIMERDEV}
1661	*/
1662	static DECLCALLBACK(void) sb16TimerIO(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser)
1663	{
1664	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
1665	STAM_PROFILE_START(&pThis->StatTimerIO, a);
1666
1667	PSB16STREAM pStream = (PSB16STREAM)pvUser;
1668	AssertPtrReturnVoid(pStream);
1669	AssertReturnVoid(hTimer == pStream->hTimerIO);
1670
1671	const uint64_t cTicksNow = PDMDevHlpTimerGet(pDevIns, pStream->hTimerIO);
1672
1673	pStream->tsTimerIO = cTicksNow;
1674
1675	PAUDMIXSINK pSink = sb16StreamIndexToSink(pThis, pStream->uIdx);
1676	AssertPtrReturnVoid(pSink);
1677
1678	const bool fSinkActive = AudioMixerSinkIsActive(pSink);
1679
1680	LogFlowFunc(("fSinkActive=%RTbool\n", fSinkActive));
1681
1682	/* Schedule the next transfer. */
1683	PDMDevHlpDMASchedule(pDevIns);
1684
1685	if (fSinkActive)
1686	{
1687	/** @todo adjust cTicks down by now much cbOutMin represents. */
1688	sb16TimerSet(pDevIns, pStream, pStream->cTicksTimerIOInterval);
1689	}
1690
1691	AudioMixerSinkSignalUpdateJob(pSink);
1692
1693	STAM_PROFILE_STOP(&pThis->StatTimerIO, a);
1694	}
1695
1696
1697	/*********************************************************************************************************************************
1698	* LUN (driver) management *
1699	*********************************************************************************************************************************/
1700
1701	/**
1702	* Retrieves a specific driver stream of a SB16 driver.
1703	*
1704	* @returns Pointer to driver stream if found, or NULL if not found.
1705	* @param pDrv Driver to retrieve driver stream for.
1706	* @param enmDir Stream direction to retrieve.
1707	* @param enmPath Stream destination / source to retrieve.
1708	*/
1709	static PSB16DRIVERSTREAM sb16GetDrvStream(PSB16DRIVER pDrv, PDMAUDIODIR enmDir, PDMAUDIOPATH enmPath)
1710	{
1711	PSB16DRIVERSTREAM pDrvStream = NULL;
1712
1713	if (enmDir == PDMAUDIODIR_OUT)
1714	{
1715	LogFunc(("enmPath=%d\n", enmPath));
1716
1717	switch (enmPath)
1718	{
1719	case PDMAUDIOPATH_OUT_FRONT:
1720	pDrvStream = &pDrv->Out;
1721	break;
1722	default:
1723	AssertFailed();
1724	break;
1725	}
1726	}
1727	else
1728	Assert(enmDir == PDMAUDIODIR_IN /** @todo Recording not implemented yet. */);
1729
1730	return pDrvStream;
1731	}
1732
1733	/**
1734	* Adds a driver stream to a specific mixer sink.
1735	*
1736	* @returns VBox status code.
1737	* @param pDevIns The device instance.
1738	* @param pMixSink Mixer sink to add driver stream to.
1739	* @param pCfg Stream configuration to use.
1740	* @param pDrv Driver stream to add.
1741	*/
1742	static int sb16AddDrvStream(PPDMDEVINS pDevIns, PAUDMIXSINK pMixSink, PCPDMAUDIOSTREAMCFG pCfg, PSB16DRIVER pDrv)
1743	{
1744	AssertReturn(pCfg->enmDir == PDMAUDIODIR_OUT, VERR_NOT_IMPLEMENTED); /* We don't support recording for SB16 so far. */
1745	LogFunc(("[LUN#%RU8] %s\n", pDrv->uLUN, pCfg->szName));
1746
1747	int rc;
1748	PSB16DRIVERSTREAM pDrvStream = sb16GetDrvStream(pDrv, pCfg->enmDir, pCfg->enmPath);
1749	if (pDrvStream)
1750	{
1751	AssertMsg(pDrvStream->pMixStrm == NULL, ("[LUN#%RU8] Driver stream already present when it must not\n", pDrv->uLUN));
1752
1753	PAUDMIXSTREAM pMixStrm;
1754	rc = AudioMixerSinkCreateStream(pMixSink, pDrv->pConnector, pCfg, pDevIns, &pMixStrm);
1755	LogFlowFunc(("LUN#%RU8: Created stream \"%s\" for sink, rc=%Rrc\n", pDrv->uLUN, pCfg->szName, rc));
1756	if (RT_SUCCESS(rc))
1757	{
1758	rc = AudioMixerSinkAddStream(pMixSink, pMixStrm);
1759	LogFlowFunc(("LUN#%RU8: Added stream \"%s\" to sink, rc=%Rrc\n", pDrv->uLUN, pCfg->szName, rc));
1760	if (RT_SUCCESS(rc))
1761	pDrvStream->pMixStrm = pMixStrm;
1762	else
1763	AudioMixerStreamDestroy(pMixStrm, pDevIns, true /fImmediate/);
1764	}
1765	}
1766	else
1767	rc = VERR_INVALID_PARAMETER;
1768
1769	LogFlowFuncLeaveRC(rc);
1770	return rc;
1771	}
1772
1773	/**
1774	* Adds all current driver streams to a specific mixer sink.
1775	*
1776	* @returns VBox status code.
1777	* @param pDevIns The device instance.
1778	* @param pThis The SB16 state.
1779	* @param pMixSink Mixer sink to add stream to.
1780	* @param pCfg Stream configuration to use.
1781	*/
1782	static int sb16AddDrvStreams(PPDMDEVINS pDevIns, PSB16STATE pThis, PAUDMIXSINK pMixSink, PCPDMAUDIOSTREAMCFG pCfg)
1783	{
1784	AssertPtrReturn(pMixSink, VERR_INVALID_POINTER);
1785
1786	int rc;
1787	if (AudioHlpStreamCfgIsValid(pCfg))
1788	{
1789	rc = AudioMixerSinkSetFormat(pMixSink, &pCfg->Props, pCfg->Device.cMsSchedulingHint);
1790	if (RT_SUCCESS(rc))
1791	{
1792	PSB16DRIVER pDrv;
1793	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1794	{
1795	int rc2 = sb16AddDrvStream(pDevIns, pMixSink, pCfg, pDrv);
1796	if (RT_FAILURE(rc2))
1797	LogFunc(("Attaching stream failed with %Rrc\n", rc2));
1798
1799	/* Do not pass failure to rc here, as there might be drivers which aren't
1800	* configured / ready yet. */
1801	}
1802	}
1803	}
1804	else
1805	rc = VERR_INVALID_PARAMETER;
1806
1807	LogFlowFuncLeaveRC(rc);
1808	return rc;
1809	}
1810
1811	/**
1812	* Removes a driver stream from a specific mixer sink.
1813	*
1814	* @param pDevIns The device instance.
1815	* @param pMixSink Mixer sink to remove audio streams from.
1816	* @param enmDir Stream direction to remove.
1817	* @param enmPath Stream destination / source to remove.
1818	* @param pDrv Driver stream to remove.
1819	*/
1820	static void sb16RemoveDrvStream(PPDMDEVINS pDevIns, PAUDMIXSINK pMixSink, PDMAUDIODIR enmDir,
1821	PDMAUDIOPATH enmPath, PSB16DRIVER pDrv)
1822	{
1823	PSB16DRIVERSTREAM pDrvStream = sb16GetDrvStream(pDrv, enmDir, enmPath);
1824	if (pDrvStream)
1825	{
1826	if (pDrvStream->pMixStrm)
1827	{
1828	LogFlowFunc(("[LUN#%RU8]\n", pDrv->uLUN));
1829
1830	AudioMixerSinkRemoveStream(pMixSink, pDrvStream->pMixStrm);
1831
1832	AudioMixerStreamDestroy(pDrvStream->pMixStrm, pDevIns, false /fImmediate/);
1833	pDrvStream->pMixStrm = NULL;
1834	}
1835	}
1836	}
1837
1838	/**
1839	* Removes all driver streams from a specific mixer sink.
1840	*
1841	* @param pDevIns The device instance.
1842	* @param pThis The SB16 state.
1843	* @param pMixSink Mixer sink to remove audio streams from.
1844	* @param enmDir Stream direction to remove.
1845	* @param enmPath Stream destination / source to remove.
1846	*/
1847	static void sb16RemoveDrvStreams(PPDMDEVINS pDevIns, PSB16STATE pThis, PAUDMIXSINK pMixSink,
1848	PDMAUDIODIR enmDir, PDMAUDIOPATH enmPath)
1849	{
1850	AssertPtrReturnVoid(pMixSink);
1851
1852	PSB16DRIVER pDrv;
1853	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
1854	{
1855	sb16RemoveDrvStream(pDevIns, pMixSink, enmDir, enmPath, pDrv);
1856	}
1857	}
1858
1859	/**
1860	* Adds a specific SB16 driver to the driver chain.
1861	*
1862	* @returns VBox status code.
1863	* @param pDevIns The device instance.
1864	* @param pThis The SB16 device state.
1865	* @param pDrv The SB16 driver to add.
1866	*/
1867	static int sb16AddDrv(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16DRIVER pDrv)
1868	{
1869	int rc = VINF_SUCCESS;
1870
1871	for (unsigned i = 0; i < SB16_MAX_STREAMS; i++)
1872	{
1873	if (AudioHlpStreamCfgIsValid(&pThis->aStreams[i].Cfg))
1874	{
1875	int rc2 = sb16AddDrvStream(pDevIns, sb16StreamIndexToSink(pThis, pThis->aStreams[i].uIdx),
1876	&pThis->aStreams[i].Cfg, pDrv);
1877	if (RT_SUCCESS(rc))
1878	rc = rc2;
1879	}
1880	}
1881
1882	return rc;
1883	}
1884
1885	/**
1886	* Removes a specific SB16 driver from the driver chain and destroys its
1887	* associated streams.
1888	*
1889	* This is only used by sb16Detach.
1890	*
1891	* @param pDevIns The device instance.
1892	* @param pThis The SB16 device state.
1893	* @param pDrv SB16 driver to remove.
1894	*/
1895	static void sb16RemoveDrv(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16DRIVER pDrv)
1896	{
1897	RT_NOREF(pDevIns);
1898
1899	/** @todo We only implement one single output (playback) stream at the moment. */
1900
1901	if (pDrv->Out.pMixStrm)
1902	{
1903	AudioMixerSinkRemoveStream(pThis->pSinkOut, pDrv->Out.pMixStrm);
1904	AudioMixerStreamDestroy(pDrv->Out.pMixStrm, pDevIns, true /fImmediate/);
1905	pDrv->Out.pMixStrm = NULL;
1906	}
1907
1908	RTListNodeRemove(&pDrv->Node);
1909	}
1910
1911
1912	/*********************************************************************************************************************************
1913	* Stream handling *
1914	*********************************************************************************************************************************/
1915
1916	static int sb16StreamDoDmaOutput(PSB16STATE pThis, PSB16STREAM pStream, int uDmaChan, uint32_t offDma, uint32_t cbDma,
1917	uint32_t cbToRead, uint32_t *pcbRead)
1918	{
1919	uint32_t cbFree = (uint32_t)RTCircBufFree(pStream->State.pCircBuf);
1920	//Assert(cbToRead <= cbFree); /** @todo Add statistics for overflows. */
1921	cbToRead = RT_MIN(cbToRead, cbFree);
1922
1923	uint32_t cbReadTotal = 0;
1924	while (cbToRead)
1925	{
1926	void *pv = NULL;
1927	size_t cb = 0;
1928	RTCircBufAcquireWriteBlock(pStream->State.pCircBuf, RT_MIN(cbDma - offDma, cbToRead), &pv, &cb);
1929
1930	uint32_t cbRead = 0;
1931	int rc = PDMDevHlpDMAReadMemory(pThis->pDevInsR3, uDmaChan, pv, offDma, (uint32_t)cb, &cbRead);
1932	if (RT_SUCCESS(rc))
1933	Assert(cbRead == cb);
1934	else
1935	{
1936	AssertMsgFailed(("Reading from DMA failed: %Rrc (cbReadTotal=%#x)\n", rc, cbReadTotal));
1937	RTCircBufReleaseWriteBlock(pStream->State.pCircBuf, 0);
1938	if (cbReadTotal > 0)
1939	break;
1940	*pcbRead = 0;
1941	return rc;
1942	}
1943
1944	if (RT_LIKELY(!pStream->Dbg.Runtime.pFileDMA))
1945	{ /* likely */ }
1946	else
1947	AudioHlpFileWrite(pStream->Dbg.Runtime.pFileDMA, pv, cbRead);
1948
1949	RTCircBufReleaseWriteBlock(pStream->State.pCircBuf, cbRead);
1950
1951	Assert(cbToRead >= cbRead);
1952	pStream->State.offWrite += cbRead;
1953	offDma = (offDma + cbRead) % cbDma;
1954	cbReadTotal += cbRead;
1955	cbToRead -= cbRead;
1956	}
1957
1958	*pcbRead = cbReadTotal;
1959
1960	/* Update buffer stats. */
1961	pStream->State.StatDmaBufUsed = (uint32_t)RTCircBufUsed(pStream->State.pCircBuf);
1962
1963	return VINF_SUCCESS;
1964	}
1965
1966	/**
1967	* Enables or disables a SB16 audio stream.
1968	*
1969	* @returns VBox status code.
1970	* @param pThis The SB16 state.
1971	* @param pStream The SB16 stream to enable or disable.
1972	* @param fEnable Whether to enable or disable the stream.
1973	* @param fForce Whether to force re-opening the stream or not.
1974	* Otherwise re-opening only will happen if the PCM properties have changed.
1975	*/
1976	static int sb16StreamEnable(PSB16STATE pThis, PSB16STREAM pStream, bool fEnable, bool fForce)
1977	{
1978	if ( !fForce
1979	&& fEnable == pStream->State.fEnabled)
1980	return VINF_SUCCESS;
1981
1982	LogFlowFunc(("fEnable=%RTbool, fForce=%RTbool, fStreamEnabled=%RTbool\n", fEnable, fForce, pStream->State.fEnabled));
1983
1984	PAUDMIXSINK pSink = sb16StreamIndexToSink(pThis, pStream->uIdx);
1985	AssertPtrReturn(pSink, VERR_INTERNAL_ERROR_2);
1986
1987	/* We only need to register the AIO update job the first time around as the requence doesn't change. */
1988	int rc;
1989	if (fEnable && !pStream->State.fRegisteredAsyncUpdateJob)
1990	{
1991	rc = AudioMixerSinkAddUpdateJob(pSink, sb16StreamUpdateAsyncIoJob, pStream, RT_MS_1SEC / pStream->uTimerHz);
1992	AssertRC(rc);
1993	pStream->State.fRegisteredAsyncUpdateJob = RT_SUCCESS(rc) \|\| rc == VERR_ALREADY_EXISTS;
1994	}
1995
1996	/* Tell the mixer. */
1997	if (fEnable)
1998	{
1999	rc = AudioMixerSinkStart(pSink);
2000	AssertRCReturn(rc, rc);
2001	}
2002	else
2003	{
2004	rc = AudioMixerSinkDrainAndStop(pSink, pStream->State.pCircBuf ? (uint32_t)RTCircBufUsed(pStream->State.pCircBuf) : 0);
2005	AssertRCReturn(rc, rc);
2006	}
2007
2008	pStream->State.fEnabled = fEnable;
2009
2010	return rc;
2011	}
2012
2013	/**
2014	* Retrieves the audio mixer sink of a corresponding SB16 stream.
2015	*
2016	* @returns Pointer to audio mixer sink if found, or NULL if not found / invalid.
2017	* @param pThis The SB16 state.
2018	* @param uIdx Stream index to get audio mixer sink for.
2019	*/
2020	DECLINLINE(PAUDMIXSINK) sb16StreamIndexToSink(PSB16STATE pThis, uint8_t uIdx)
2021	{
2022	AssertReturn(uIdx <= SB16_MAX_STREAMS, NULL);
2023
2024	/* Dead simple for now; make this more sophisticated if we have more stuff to cover. */
2025	if (uIdx == SB16_IDX_OUT)
2026	return pThis->pSinkOut; /* Can be NULL if not configured / set up yet. */
2027
2028	AssertMsgFailed(("No sink attached (yet) for index %RU8\n", uIdx));
2029	return NULL;
2030	}
2031
2032	/**
2033	* Returns the audio direction of a specified stream descriptor.
2034	*
2035	* @returns Audio direction.
2036	* @param uIdx Stream index to get audio direction for.
2037	*/
2038	DECLINLINE(PDMAUDIODIR) sb16GetDirFromIndex(uint8_t uIdx)
2039	{
2040	AssertReturn(uIdx <= SB16_MAX_STREAMS, PDMAUDIODIR_INVALID);
2041
2042	/* Dead simple for now; make this more sophisticated if we have more stuff to cover. */
2043	if (uIdx == SB16_IDX_OUT)
2044	return PDMAUDIODIR_OUT;
2045
2046	return PDMAUDIODIR_INVALID;
2047	}
2048
2049	/**
2050	* Creates a SB16 audio stream.
2051	*
2052	* @returns VBox status code.
2053	* @param pThis The SB16 state.
2054	* @param pStream The SB16 stream to create.
2055	* @param uIdx Stream index to assign.
2056	*/
2057	static int sb16StreamCreate(PSB16STATE pThis, PSB16STREAM pStream, uint8_t uIdx)
2058	{
2059	LogFlowFuncEnter();
2060
2061	pStream->Dbg.Runtime.fEnabled = pThis->Dbg.fEnabled;
2062
2063	if (RT_LIKELY(!pStream->Dbg.Runtime.fEnabled))
2064	{ /* likely */ }
2065	else
2066	{
2067	int rc2 = AudioHlpFileCreateF(&pStream->Dbg.Runtime.pFileDMA, AUDIOHLPFILE_FLAGS_NONE, AUDIOHLPFILETYPE_WAV,
2068	pThis->Dbg.pszOutPath, AUDIOHLPFILENAME_FLAGS_NONE, 0 /uInstance/,
2069	sb16GetDirFromIndex(pStream->uIdx) == PDMAUDIODIR_IN
2070	? "sb16StreamWriteSD%RU8" : "sb16StreamReadSD%RU8", pStream->uIdx);
2071	AssertRC(rc2);
2072
2073	/* Delete stale debugging files from a former run. */
2074	AudioHlpFileDelete(pStream->Dbg.Runtime.pFileDMA);
2075	}
2076
2077	pStream->uIdx = uIdx;
2078
2079	return VINF_SUCCESS;
2080	}
2081
2082	/**
2083	* Destroys a SB16 audio stream.
2084	*
2085	* @returns VBox status code.
2086	* @param pDevIns The device instance.
2087	* @param pThis The SB16 state.
2088	* @param pStream The SB16 stream to destroy.
2089	*/
2090	static int sb16StreamDestroy(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream)
2091	{
2092	LogFlowFuncEnter();
2093
2094	sb16StreamClose(pDevIns, pThis, pStream);
2095
2096	if (pStream->State.fRegisteredAsyncUpdateJob)
2097	{
2098	PAUDMIXSINK pSink = sb16StreamIndexToSink(pThis, pStream->uIdx);
2099	if (pSink)
2100	AudioMixerSinkRemoveUpdateJob(pSink, sb16StreamUpdateAsyncIoJob, pStream);
2101	pStream->State.fRegisteredAsyncUpdateJob = false;
2102	}
2103
2104	if (pStream->State.pCircBuf)
2105	{
2106	RTCircBufDestroy(pStream->State.pCircBuf);
2107	pStream->State.pCircBuf = NULL;
2108	}
2109
2110	if (RT_LIKELY(!pStream->Dbg.Runtime.fEnabled))
2111	{ /* likely */ }
2112	else
2113	{
2114	AudioHlpFileDestroy(pStream->Dbg.Runtime.pFileDMA);
2115	pStream->Dbg.Runtime.pFileDMA = NULL;
2116	}
2117
2118	pStream->uIdx = UINT8_MAX;
2119
2120	return VINF_SUCCESS;
2121	}
2122
2123	/**
2124	* Resets a SB16 stream.
2125	*
2126	* @param pThis The SB16 state.
2127	* @param pStream The SB16 stream to reset.
2128	*/
2129	static void sb16StreamReset(PSB16STATE pThis, PSB16STREAM pStream)
2130	{
2131	LogFlowFuncEnter();
2132
2133	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 0);
2134	if (pStream->dma_auto)
2135	{
2136	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 1);
2137	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 0);
2138
2139	pStream->dma_auto = 0;
2140	}
2141
2142	sb16StreamControl(pThis->pDevInsR3, pThis, pStream, false /* fRun */);
2143	sb16StreamEnable(pThis, pStream, false /* fEnable /, false / fForce */);
2144
2145	switch (pStream->uIdx)
2146	{
2147	case SB16_IDX_OUT:
2148	{
2149	pStream->Cfg.enmDir = PDMAUDIODIR_OUT;
2150	pStream->Cfg.enmPath = PDMAUDIOPATH_OUT_FRONT;
2151
2152	PDMAudioPropsInit(&pStream->Cfg.Props, 1 /* 8-bit /, false / fSigned /, 1 / Mono /, 11025 / uHz */);
2153	RTStrCopy(pStream->Cfg.szName, sizeof(pStream->Cfg.szName), "Output");
2154	break;
2155	}
2156
2157	default:
2158	AssertFailed();
2159	break;
2160	}
2161
2162	pStream->cbDmaLeft = 0;
2163	pStream->cbDmaBlockSize = 0;
2164	pStream->can_write = 1; /** @ŧodo r=andy BUGBUG Figure out why we (still) need this. */
2165
2166	/** @todo Also reset corresponding DSP values here? */
2167	}
2168
2169	/**
2170	* Opens a SB16 stream with its current mixer settings.
2171	*
2172	* @returns VBox status code.
2173	* @param pDevIns The device instance.
2174	* @param pThis The SB16 device state.
2175	* @param pStream The SB16 stream to open.
2176	*
2177	* @note This currently only supports the one and only output stream.
2178	*/
2179	static int sb16StreamOpen(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream)
2180	{
2181	LogFlowFuncEnter();
2182	AssertLogRelReturn(PDMAudioPropsAreValid(&pStream->Cfg.Props), VERR_INTERNAL_ERROR_5);
2183
2184	switch (pStream->uIdx)
2185	{
2186	case SB16_IDX_OUT:
2187	pStream->Cfg.enmDir = PDMAUDIODIR_OUT;
2188	pStream->Cfg.enmPath = PDMAUDIOPATH_OUT_FRONT;
2189
2190	RTStrCopy(pStream->Cfg.szName, sizeof(pStream->Cfg.szName), "Output");
2191	break;
2192
2193	default:
2194	AssertFailed();
2195	break;
2196	}
2197
2198	LogRel2(("SB16: (Re-)Opening stream '%s' (%RU32Hz, %RU8 channels, %s%RU8)\n", pStream->Cfg.szName, pStream->Cfg.Props.uHz,
2199	PDMAudioPropsChannels(&pStream->Cfg.Props), pStream->Cfg.Props.fSigned ? "S" : "U",
2200	PDMAudioPropsSampleBits(&pStream->Cfg.Props)));
2201
2202	/* (Re-)create the stream's internal ring buffer. */
2203	if (pStream->State.pCircBuf)
2204	{
2205	RTCircBufDestroy(pStream->State.pCircBuf);
2206	pStream->State.pCircBuf = NULL;
2207	}
2208
2209	/** @todo r=bird: two DMA periods is probably too little. */
2210	const uint32_t cbCircBuf = PDMAudioPropsMilliToBytes(&pStream->Cfg.Props,
2211	(RT_MS_1SEC / pStream->uTimerHz) * 2 /* Use double buffering here */);
2212
2213	int rc = RTCircBufCreate(&pStream->State.pCircBuf, cbCircBuf);
2214	AssertRCReturn(rc, rc);
2215	pStream->State.StatDmaBufSize = (uint32_t)RTCircBufSize(pStream->State.pCircBuf);
2216
2217	/* Set scheduling hint. */
2218	pStream->Cfg.Device.cMsSchedulingHint = RT_MS_1SEC / RT_MIN(pStream->uTimerHz, 1);
2219
2220	PAUDMIXSINK pMixerSink = sb16StreamIndexToSink(pThis, pStream->uIdx);
2221	AssertPtrReturn(pMixerSink, VERR_INVALID_POINTER);
2222
2223	sb16RemoveDrvStreams(pDevIns, pThis,
2224	sb16StreamIndexToSink(pThis, pStream->uIdx), pStream->Cfg.enmDir, pStream->Cfg.enmPath);
2225
2226	rc = sb16AddDrvStreams(pDevIns, pThis, pMixerSink, &pStream->Cfg);
2227	if (RT_SUCCESS(rc))
2228	{
2229	if (RT_LIKELY(!pStream->Dbg.Runtime.fEnabled))
2230	{ /* likely */ }
2231	else
2232	{
2233	/* Make sure to close + delete a former debug file, as the PCM format has changed (e.g. U8 -> S16). */
2234	if (AudioHlpFileIsOpen(pStream->Dbg.Runtime.pFileDMA))
2235	{
2236	AudioHlpFileClose(pStream->Dbg.Runtime.pFileDMA);
2237	AudioHlpFileDelete(pStream->Dbg.Runtime.pFileDMA);
2238	}
2239
2240	int rc2 = AudioHlpFileOpen(pStream->Dbg.Runtime.pFileDMA, AUDIOHLPFILE_DEFAULT_OPEN_FLAGS,
2241	&pStream->Cfg.Props);
2242	AssertRC(rc2);
2243	}
2244	}
2245
2246	LogFlowFuncLeaveRC(rc);
2247	return rc;
2248	}
2249
2250	/**
2251	* Closes a SB16 stream.
2252	*
2253	* @param pDevIns The device instance.
2254	* @param pThis SB16 state.
2255	* @param pStream The SB16 stream to close.
2256	*/
2257	static void sb16StreamClose(PPDMDEVINS pDevIns, PSB16STATE pThis, PSB16STREAM pStream)
2258	{
2259	RT_NOREF(pDevIns, pThis, pStream);
2260
2261	LogFlowFuncEnter();
2262
2263	/* Nothing to do in here right now. */
2264	}
2265
2266	static void sb16StreamTransferScheduleNext(PSB16STATE pThis, PSB16STREAM pStream, uint32_t cbBytes)
2267	{
2268	RT_NOREF(pStream);
2269
2270	uint64_t const uTimerHz = PDMDevHlpTimerGetFreq(pThis->pDevInsR3, pThis->hTimerIRQ);
2271
2272	const uint64_t usBytes = PDMAudioPropsBytesToMicro(&pStream->Cfg.Props, cbBytes);
2273	const uint64_t cTransferTicks = PDMDevHlpTimerFromMicro(pThis->pDevInsR3, pThis->hTimerIRQ, usBytes);
2274
2275	LogFlowFunc(("%RU32 bytes -> %RU64 ticks\n", cbBytes, cTransferTicks));
2276
2277	if (cTransferTicks < uTimerHz / 1024) /** @todo Explain this. */
2278	{
2279	LogFlowFunc(("IRQ\n"));
2280	PDMDevHlpISASetIrq(pThis->pDevInsR3, pStream->HwCfgRuntime.uIrq, 1);
2281	}
2282	else
2283	{
2284	LogFlowFunc(("Scheduled\n"));
2285	PDMDevHlpTimerSetRelative(pThis->pDevInsR3, pThis->hTimerIRQ, cTransferTicks, NULL);
2286	}
2287	}
2288
2289
2290	/**
2291	* Output streams: Pushes data to the mixer.
2292	*
2293	* @param pStream The SB16 stream.
2294	* @param pSink The mixer sink to push to.
2295	*/
2296	static void sb16StreamPushToMixer(PSB16STREAM pStream, PAUDMIXSINK pSink)
2297	{
2298	#ifdef LOG_ENABLED
2299	uint64_t const offReadOld = pStream->State.offRead;
2300	#endif
2301	pStream->State.offRead = AudioMixerSinkTransferFromCircBuf(pSink,
2302	pStream->State.pCircBuf,
2303	pStream->State.offRead,
2304	pStream->uIdx,
2305	/** @todo pStream->Dbg.Runtime.fEnabled
2306	? pStream->Dbg.Runtime.pFileStream :*/ NULL);
2307
2308	Log3Func(("[SD%RU8] transferred=%#RX64 bytes -> @%#RX64\n", pStream->uIdx,
2309	pStream->State.offRead - offReadOld, pStream->State.offRead));
2310
2311	/* Update buffer stats. */
2312	pStream->State.StatDmaBufUsed = (uint32_t)RTCircBufUsed(pStream->State.pCircBuf);
2313	}
2314
2315
2316	/**
2317	* @callback_method_impl{FNAUDMIXSINKUPDATE}
2318	*
2319	* For output streams this moves data from the internal DMA buffer (in which
2320	* ichac97R3StreamUpdateDma put it), thru the mixer and to the various backend
2321	* audio devices.
2322	*/
2323	static DECLCALLBACK(void) sb16StreamUpdateAsyncIoJob(PPDMDEVINS pDevIns, PAUDMIXSINK pSink, void *pvUser)
2324	{
2325	PSB16STATE const pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2326	PSB16STREAM const pStream = (PSB16STREAM)pvUser;
2327	Assert(pStream->uIdx == (uintptr_t)(pStream - &pThis->aStreams[0]));
2328	Assert(pSink == sb16StreamIndexToSink(pThis, pStream->uIdx));
2329	RT_NOREF(pThis);
2330
2331	/*
2332	* Output.
2333	*/
2334	if (sb16GetDirFromIndex(pStream->uIdx) == PDMAUDIODIR_OUT)
2335	sb16StreamPushToMixer(pStream, pSink);
2336	/*
2337	* No input streams at present.
2338	*/
2339	else
2340	AssertFailed();
2341	}
2342
2343
2344	/*********************************************************************************************************************************
2345	* Saved state handling *
2346	*********************************************************************************************************************************/
2347
2348	/**
2349	* @callback_method_impl{FNSSMDEVLIVEEXEC}
2350	*/
2351	static DECLCALLBACK(int) sb16LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
2352	{
2353	RT_NOREF(uPass);
2354
2355	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2356	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2357
2358	/** Currently the saved state only contains the one-and-only output stream. */
2359	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
2360
2361	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgDefault.uIrq);
2362	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgDefault.uDmaChanLow);
2363	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgDefault.uDmaChanHigh);
2364	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgDefault.uPort);
2365	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgDefault.uVer);
2366	return VINF_SSM_DONT_CALL_AGAIN;
2367	}
2368
2369	/**
2370	* Worker for sb16SaveExec.
2371	*/
2372	static int sb16Save(PCPDMDEVHLPR3 pHlp, PSSMHANDLE pSSM, PSB16STATE pThis)
2373	{
2374	/* The saved state only contains the one-and-only output stream. */
2375	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
2376
2377	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgRuntime.uIrq);
2378	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgRuntime.uDmaChanLow);
2379	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgRuntime.uDmaChanHigh);
2380	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgRuntime.uPort);
2381	pHlp->pfnSSMPutS32(pSSM, pStream->HwCfgRuntime.uVer);
2382	pHlp->pfnSSMPutS32(pSSM, pThis->dsp_in_idx);
2383	pHlp->pfnSSMPutS32(pSSM, pThis->dsp_out_data_len);
2384
2385	pHlp->pfnSSMPutS32(pSSM, PDMAudioPropsChannels(&pStream->Cfg.Props) >= 2 ? 1 : 0);
2386	pHlp->pfnSSMPutS32(pSSM, PDMAudioPropsIsSigned(&pStream->Cfg.Props) ? 1 : 0);
2387	pHlp->pfnSSMPutS32(pSSM, PDMAudioPropsSampleBits(&pStream->Cfg.Props));
2388	pHlp->pfnSSMPutU32(pSSM, 0); /* Legacy; was PDMAUDIOFMT, unused now. */
2389
2390	pHlp->pfnSSMPutS32(pSSM, pStream->dma_auto);
2391	pHlp->pfnSSMPutS32(pSSM, pStream->cbDmaBlockSize);
2392	pHlp->pfnSSMPutS32(pSSM, pStream->fifo);
2393	pHlp->pfnSSMPutS32(pSSM, PDMAudioPropsHz(&pStream->Cfg.Props));
2394	pHlp->pfnSSMPutS32(pSSM, pStream->time_const);
2395	pHlp->pfnSSMPutS32(pSSM, 0); /* Legacy; was speaker control (on/off) for output stream. */
2396	pHlp->pfnSSMPutS32(pSSM, pThis->dsp_in_needed_bytes);
2397	pHlp->pfnSSMPutS32(pSSM, pThis->cmd);
2398	pHlp->pfnSSMPutS32(pSSM, pStream->fDmaUseHigh);
2399	pHlp->pfnSSMPutS32(pSSM, pThis->highspeed);
2400	pHlp->pfnSSMPutS32(pSSM, pStream->can_write);
2401	pHlp->pfnSSMPutS32(pSSM, pThis->v2x6);
2402
2403	pHlp->pfnSSMPutU8 (pSSM, pThis->csp_param);
2404	pHlp->pfnSSMPutU8 (pSSM, pThis->csp_value);
2405	pHlp->pfnSSMPutU8 (pSSM, pThis->csp_mode);
2406	pHlp->pfnSSMPutU8 (pSSM, pThis->csp_param); /* Bug compatible! */
2407	pHlp->pfnSSMPutMem(pSSM, pThis->csp_regs, 256);
2408	pHlp->pfnSSMPutU8 (pSSM, pThis->csp_index);
2409	pHlp->pfnSSMPutMem(pSSM, pThis->csp_reg83, 4);
2410	pHlp->pfnSSMPutS32(pSSM, pThis->csp_reg83r);
2411	pHlp->pfnSSMPutS32(pSSM, pThis->csp_reg83w);
2412
2413	pHlp->pfnSSMPutMem(pSSM, pThis->dsp_in_data, sizeof(pThis->dsp_in_data));
2414	pHlp->pfnSSMPutMem(pSSM, pThis->dsp_out_data, sizeof(pThis->dsp_out_data));
2415	pHlp->pfnSSMPutU8 (pSSM, pThis->test_reg);
2416	pHlp->pfnSSMPutU8 (pSSM, pThis->last_read_byte);
2417
2418	pHlp->pfnSSMPutS32(pSSM, pThis->nzero);
2419	pHlp->pfnSSMPutS32(pSSM, pStream->cbDmaLeft);
2420	pHlp->pfnSSMPutS32(pSSM, pStream->State.fEnabled ? 1 : 0);
2421	/* The stream's bitrate. Needed for backwards (legacy) compatibility. */
2422	pHlp->pfnSSMPutS32(pSSM, AudioHlpCalcBitrate(PDMAudioPropsSampleBits(&pThis->aStreams[SB16_IDX_OUT].Cfg.Props),
2423	PDMAudioPropsHz(&pThis->aStreams[SB16_IDX_OUT].Cfg.Props),
2424	PDMAudioPropsChannels(&pThis->aStreams[SB16_IDX_OUT].Cfg.Props)));
2425	/* Block size alignment, superfluous and thus not saved anymore. Needed for backwards (legacy) compatibility. */
2426	pHlp->pfnSSMPutS32(pSSM, 0);
2427
2428	pHlp->pfnSSMPutS32(pSSM, pThis->mixer_nreg);
2429	return pHlp->pfnSSMPutMem(pSSM, pThis->mixer_regs, 256);
2430	}
2431
2432	/**
2433	* @callback_method_impl{FNSSMDEVSAVEEXEC}
2434	*/
2435	static DECLCALLBACK(int) sb16SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
2436	{
2437	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2438	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2439
2440	sb16LiveExec(pDevIns, pSSM, 0);
2441	return sb16Save(pHlp, pSSM, pThis);
2442	}
2443
2444	/**
2445	* Worker for sb16LoadExec.
2446	*/
2447	static int sb16Load(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, PSB16STATE pThis)
2448	{
2449	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2450	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT]; /* The saved state only contains the one-and-only output stream. */
2451	int rc;
2452
2453	int32_t i32Tmp;
2454	pHlp->pfnSSMGetS32(pSSM, &i32Tmp);
2455	pStream->HwCfgRuntime.uIrq = i32Tmp; /* IRQ. */
2456	pHlp->pfnSSMGetS32(pSSM, &i32Tmp);
2457	pStream->HwCfgRuntime.uDmaChanLow = i32Tmp; /* Low (8-bit) DMA channel. */
2458	pHlp->pfnSSMGetS32(pSSM, &i32Tmp);
2459	pStream->HwCfgRuntime.uDmaChanHigh = i32Tmp; /* High (16-bit) DMA channel. */
2460	pHlp->pfnSSMGetS32(pSSM, &i32Tmp); /* Used I/O port. */
2461	pStream->HwCfgRuntime.uPort = i32Tmp;
2462	pHlp->pfnSSMGetS32(pSSM, &i32Tmp); /* DSP version running. */
2463	pStream->HwCfgRuntime.uVer = i32Tmp;
2464	pHlp->pfnSSMGetS32(pSSM, &pThis->dsp_in_idx);
2465	pHlp->pfnSSMGetS32(pSSM, &pThis->dsp_out_data_len);
2466
2467	rc = pHlp->pfnSSMGetS32(pSSM, &i32Tmp); /* Output stream: Numer of channels. */
2468	AssertRCReturn(rc, rc);
2469	PDMAudioPropsSetChannels(&pStream->Cfg.Props, i32Tmp);
2470	pHlp->pfnSSMGetS32(pSSM, &i32Tmp); /* Output stream: Signed format bit. */
2471	pStream->Cfg.Props.fSigned = i32Tmp != 0;
2472	rc = pHlp->pfnSSMGetS32(pSSM, &i32Tmp); /* Output stream: Sample size in bits. */
2473	AssertRCReturn(rc, rc);
2474	PDMAudioPropsSetSampleSize(&pStream->Cfg.Props, i32Tmp / 8);
2475
2476	pHlp->pfnSSMSkip (pSSM, sizeof(int32_t)); /* Legacy; was PDMAUDIOFMT, unused now. */
2477	pHlp->pfnSSMGetS32(pSSM, &pStream->dma_auto);
2478	pHlp->pfnSSMGetS32(pSSM, &pThis->aStreams[SB16_IDX_OUT].cbDmaBlockSize);
2479	pHlp->pfnSSMGetS32(pSSM, &pStream->fifo);
2480	pHlp->pfnSSMGetS32(pSSM, &i32Tmp); pStream->Cfg.Props.uHz = i32Tmp;
2481	pHlp->pfnSSMGetS32(pSSM, &pStream->time_const);
2482	pHlp->pfnSSMSkip (pSSM, sizeof(int32_t)); /* Legacy; was speaker (on / off) for output stream. */
2483	pHlp->pfnSSMGetS32(pSSM, &pThis->dsp_in_needed_bytes);
2484	pHlp->pfnSSMGetS32(pSSM, &pThis->cmd);
2485	pHlp->pfnSSMGetS32(pSSM, &pStream->fDmaUseHigh); /* Output stream: Whether to use the high or low DMA channel. */
2486	pHlp->pfnSSMGetS32(pSSM, &pThis->highspeed);
2487	pHlp->pfnSSMGetS32(pSSM, &pStream->can_write);
2488	pHlp->pfnSSMGetS32(pSSM, &pThis->v2x6);
2489
2490	pHlp->pfnSSMGetU8 (pSSM, &pThis->csp_param);
2491	pHlp->pfnSSMGetU8 (pSSM, &pThis->csp_value);
2492	pHlp->pfnSSMGetU8 (pSSM, &pThis->csp_mode);
2493	pHlp->pfnSSMGetU8 (pSSM, &pThis->csp_param); /* Bug compatible! */
2494	pHlp->pfnSSMGetMem(pSSM, pThis->csp_regs, 256);
2495	pHlp->pfnSSMGetU8 (pSSM, &pThis->csp_index);
2496	pHlp->pfnSSMGetMem(pSSM, pThis->csp_reg83, 4);
2497	pHlp->pfnSSMGetS32(pSSM, &pThis->csp_reg83r);
2498	pHlp->pfnSSMGetS32(pSSM, &pThis->csp_reg83w);
2499
2500	pHlp->pfnSSMGetMem(pSSM, pThis->dsp_in_data, sizeof(pThis->dsp_in_data));
2501	pHlp->pfnSSMGetMem(pSSM, pThis->dsp_out_data, sizeof(pThis->dsp_out_data));
2502	pHlp->pfnSSMGetU8 (pSSM, &pThis->test_reg);
2503	pHlp->pfnSSMGetU8 (pSSM, &pThis->last_read_byte);
2504
2505	pHlp->pfnSSMGetS32(pSSM, &pThis->nzero);
2506	pHlp->pfnSSMGetS32(pSSM, &pStream->cbDmaLeft);
2507	pHlp->pfnSSMGetS32(pSSM, &i32Tmp); /* Output stream: DMA currently running bit. */
2508	const bool fStreamEnabled = i32Tmp != 0;
2509	pHlp->pfnSSMSkip (pSSM, sizeof(int32_t)); /* Legacy; was the output stream's current bitrate (in bytes). */
2510	pHlp->pfnSSMSkip (pSSM, sizeof(int32_t)); /* Legacy; was the output stream's DMA block alignment. */
2511
2512	int32_t mixer_nreg = 0;
2513	rc = pHlp->pfnSSMGetS32(pSSM, &mixer_nreg);
2514	AssertRCReturn(rc, rc);
2515	pThis->mixer_nreg = (uint8_t)mixer_nreg;
2516	rc = pHlp->pfnSSMGetMem(pSSM, pThis->mixer_regs, 256);
2517	AssertRCReturn(rc, rc);
2518
2519	if (fStreamEnabled)
2520	sb16StreamControl(pDevIns, pThis, pStream, true /* fRun */);
2521
2522	/* Update the master (mixer) and PCM out volumes. */
2523	sb16UpdateVolume(pThis);
2524
2525	return VINF_SUCCESS;
2526	}
2527
2528	/**
2529	* @callback_method_impl{FNSSMDEVLOADEXEC}
2530	*/
2531	static DECLCALLBACK(int) sb16LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
2532	{
2533	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2534	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2535
2536	AssertMsgReturn( uVersion == SB16_SAVE_STATE_VERSION
2537	\|\| uVersion == SB16_SAVE_STATE_VERSION_VBOX_30,
2538	("%u\n", uVersion),
2539	VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION);
2540	if (uVersion > SB16_SAVE_STATE_VERSION_VBOX_30)
2541	{
2542	/** Currently the saved state only contains the one-and-only output stream. */
2543	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
2544
2545	int32_t irq;
2546	pHlp->pfnSSMGetS32(pSSM, &irq);
2547	int32_t dma;
2548	pHlp->pfnSSMGetS32(pSSM, &dma);
2549	int32_t hdma;
2550	pHlp->pfnSSMGetS32(pSSM, &hdma);
2551	int32_t port;
2552	pHlp->pfnSSMGetS32(pSSM, &port);
2553	int32_t ver;
2554	int rc = pHlp->pfnSSMGetS32(pSSM, &ver);
2555	AssertRCReturn (rc, rc);
2556
2557	if ( irq != pStream->HwCfgDefault.uIrq
2558	\|\| dma != pStream->HwCfgDefault.uDmaChanLow
2559	\|\| hdma != pStream->HwCfgDefault.uDmaChanHigh
2560	\|\| port != pStream->HwCfgDefault.uPort
2561	\|\| ver != pStream->HwCfgDefault.uVer)
2562	{
2563	return pHlp->pfnSSMSetCfgError(pSSM, RT_SRC_POS,
2564	N_("config changed: irq=%x/%x dma=%x/%x hdma=%x/%x port=%x/%x ver=%x/%x (saved/config)"),
2565	irq, pStream->HwCfgDefault.uIrq,
2566	dma, pStream->HwCfgDefault.uDmaChanLow,
2567	hdma, pStream->HwCfgDefault.uDmaChanHigh,
2568	port, pStream->HwCfgDefault.uPort,
2569	ver, pStream->HwCfgDefault.uVer);
2570	}
2571	}
2572
2573	if (uPass != SSM_PASS_FINAL)
2574	return VINF_SUCCESS;
2575
2576	return sb16Load(pDevIns, pSSM, pThis);
2577	}
2578
2579
2580	/*********************************************************************************************************************************
2581	* Debug Info Items *
2582	*********************************************************************************************************************************/
2583
2584	/**
2585	* @callback_method_impl{FNDBGFHANDLERDEV, sb16mixer}
2586	*/
2587	static DECLCALLBACK(void) sb16DbgInfoMixer(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
2588	{
2589	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2590	if (pThis->pMixer)
2591	AudioMixerDebug(pThis->pMixer, pHlp, pszArgs);
2592	else
2593	pHlp->pfnPrintf(pHlp, "Mixer not available\n");
2594	}
2595
2596
2597	/*********************************************************************************************************************************
2598	* IBase implementation *
2599	*********************************************************************************************************************************/
2600
2601	/**
2602	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
2603	*/
2604	static DECLCALLBACK(void ) sb16QueryInterface(struct PDMIBASE pInterface, const char *pszIID)
2605	{
2606	PSB16STATE pThis = RT_FROM_MEMBER(pInterface, SB16STATE, IBase);
2607	Assert(&pThis->IBase == pInterface);
2608
2609	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
2610	return NULL;
2611	}
2612
2613
2614	/*********************************************************************************************************************************
2615	* Device (PDM) handling *
2616	*********************************************************************************************************************************/
2617
2618	/**
2619	* Worker for sb16Construct() and sb16Attach().
2620	*
2621	* @returns VBox status code.
2622	* @param pThis SB16 state.
2623	* @param uLUN The logical unit which is being detached.
2624	* @param ppDrv Attached driver instance on success. Optional.
2625	*/
2626	static int sb16AttachInternal(PSB16STATE pThis, unsigned uLUN, PSB16DRIVER *ppDrv)
2627	{
2628	/*
2629	* Allocate a new driver structure and try attach the driver.
2630	*/
2631	PSB16DRIVER pDrv = (PSB16DRIVER)RTMemAllocZ(sizeof(SB16DRIVER));
2632	AssertReturn(pDrv, VERR_NO_MEMORY);
2633	RTStrPrintf(pDrv->szDesc, sizeof(pDrv->szDesc), "Audio driver port (SB16) for LUN #%u", uLUN);
2634
2635	PPDMIBASE pDrvBase;
2636	int rc = PDMDevHlpDriverAttach(pThis->pDevInsR3, uLUN, &pThis->IBase, &pDrvBase, pDrv->szDesc);
2637	if (RT_SUCCESS(rc))
2638	{
2639	pDrv->pConnector = PDMIBASE_QUERY_INTERFACE(pDrvBase, PDMIAUDIOCONNECTOR);
2640	AssertPtr(pDrv->pConnector);
2641	if (RT_VALID_PTR(pDrv->pConnector))
2642	{
2643	pDrv->pDrvBase = pDrvBase;
2644	pDrv->pSB16State = pThis;
2645	pDrv->uLUN = uLUN;
2646
2647	/* Attach to driver list if not attached yet. */
2648	if (!pDrv->fAttached)
2649	{
2650	RTListAppend(&pThis->lstDrv, &pDrv->Node);
2651	pDrv->fAttached = true;
2652	}
2653
2654	if (ppDrv)
2655	*ppDrv = pDrv;
2656	LogFunc(("LUN#%u: returns VINF_SUCCESS (pCon=%p)\n", uLUN, pDrv->pConnector));
2657	return VINF_SUCCESS;
2658	}
2659	rc = VERR_PDM_MISSING_INTERFACE_BELOW;
2660	}
2661	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
2662	LogFunc(("No attached driver for LUN #%u\n", uLUN));
2663	else
2664	LogFunc(("Failed to attached driver for LUN #%u: %Rrc\n", uLUN, rc));
2665	RTMemFree(pDrv);
2666
2667	LogFunc(("LUN#%u: rc=%Rrc\n", uLUN, rc));
2668	return rc;
2669	}
2670
2671	/**
2672	* @interface_method_impl{PDMDEVREG,pfnAttach}
2673	*/
2674	static DECLCALLBACK(int) sb16Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2675	{
2676	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2677	RT_NOREF(fFlags);
2678	LogFunc(("iLUN=%u, fFlags=%#x\n", iLUN, fFlags));
2679
2680	/** @todo r=andy Any locking required here? */
2681
2682	PSB16DRIVER pDrv;
2683	int rc = sb16AttachInternal(pThis, iLUN, &pDrv);
2684	if (RT_SUCCESS(rc))
2685	{
2686	int rc2 = sb16AddDrv(pDevIns, pThis, pDrv);
2687	if (RT_FAILURE(rc2))
2688	LogFunc(("sb16AddDrv failed with %Rrc (ignored)\n", rc2));
2689	}
2690
2691	return rc;
2692	}
2693
2694	/**
2695	* @interface_method_impl{PDMDEVREG,pfnDetach}
2696	*/
2697	static DECLCALLBACK(void) sb16Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2698	{
2699	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2700	RT_NOREF(fFlags);
2701
2702	LogFunc(("iLUN=%u, fFlags=0x%x\n", iLUN, fFlags));
2703
2704	PSB16DRIVER pDrv;
2705	RTListForEach(&pThis->lstDrv, pDrv, SB16DRIVER, Node)
2706	{
2707	if (pDrv->uLUN == iLUN)
2708	{
2709	sb16RemoveDrv(pDevIns, pThis, pDrv);
2710	RTMemFree(pDrv);
2711	return;
2712	}
2713	}
2714	LogFunc(("LUN#%u was not found\n", iLUN));
2715	}
2716
2717
2718	/**
2719	* @interface_method_impl{PDMDEVREG,pfnReset}
2720	*/
2721	static DECLCALLBACK(void) sb16DevReset(PPDMDEVINS pDevIns)
2722	{
2723	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2724
2725	LogRel2(("SB16: Reset\n"));
2726
2727	pThis->mixer_regs[0x82] = 0;
2728	pThis->csp_regs[5] = 1;
2729	pThis->csp_regs[9] = 0xf8;
2730
2731	pThis->dsp_in_idx = 0;
2732	pThis->dsp_out_data_len = 0;
2733	pThis->dsp_in_needed_bytes = 0;
2734	pThis->nzero = 0;
2735	pThis->highspeed = 0;
2736	pThis->v2x6 = 0;
2737	pThis->cmd = -1;
2738
2739	sb16MixerReset(pThis);
2740	sb16SpeakerControl(pThis, 0);
2741	sb16DspCmdResetLegacy(pThis);
2742	}
2743
2744	/**
2745	* Powers off the device.
2746	*
2747	* @param pDevIns Device instance to power off.
2748	*/
2749	static DECLCALLBACK(void) sb16PowerOff(PPDMDEVINS pDevIns)
2750	{
2751	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2752
2753	LogRel2(("SB16: Powering off ...\n"));
2754
2755	/*
2756	* Destroy all streams.
2757	*/
2758	for (unsigned i = 0; i < SB16_MAX_STREAMS; i++)
2759	sb16StreamDestroy(pDevIns, pThis, &pThis->aStreams[i]);
2760
2761	/*
2762	* Destroy all sinks.
2763	*/
2764	if (pThis->pSinkOut)
2765	{
2766	AudioMixerSinkDestroy(pThis->pSinkOut, pDevIns);
2767	pThis->pSinkOut = NULL;
2768	}
2769	/** @todo Ditto for sinks. */
2770
2771	/*
2772	* Note: Destroy the mixer while powering off and not in sb16Destruct,
2773	* giving the mixer the chance to release any references held to
2774	* PDM audio streams it maintains.
2775	*/
2776	if (pThis->pMixer)
2777	{
2778	AudioMixerDestroy(pThis->pMixer, pDevIns);
2779	pThis->pMixer = NULL;
2780	}
2781	}
2782
2783	/**
2784	* @interface_method_impl{PDMDEVREG,pfnDestruct}
2785	*/
2786	static DECLCALLBACK(int) sb16Destruct(PPDMDEVINS pDevIns)
2787	{
2788	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns); /* this shall come first */
2789	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2790
2791	LogFlowFuncEnter();
2792
2793	PSB16DRIVER pDrv;
2794	while (!RTListIsEmpty(&pThis->lstDrv))
2795	{
2796	pDrv = RTListGetFirst(&pThis->lstDrv, SB16DRIVER, Node);
2797
2798	RTListNodeRemove(&pDrv->Node);
2799	RTMemFree(pDrv);
2800	}
2801
2802	/* We don't always go via PowerOff, so make sure the mixer is destroyed. */
2803	if (pThis->pMixer)
2804	{
2805	AudioMixerDestroy(pThis->pMixer, pDevIns);
2806	pThis->pMixer = NULL;
2807	}
2808
2809	return VINF_SUCCESS;
2810	}
2811
2812	/**
2813	* @interface_method_impl{PDMDEVREGR3,pfnConstruct}
2814	*/
2815	static DECLCALLBACK(int) sb16Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2816	{
2817	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); /* this shall come first */
2818	PSB16STATE pThis = PDMDEVINS_2_DATA(pDevIns, PSB16STATE);
2819	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2820	RT_NOREF(iInstance);
2821
2822	Assert(iInstance == 0);
2823
2824	/*
2825	* Initialize the data so sb16Destruct runs without a hitch if we return early.
2826	*/
2827	pThis->pDevInsR3 = pDevIns;
2828	pThis->IBase.pfnQueryInterface = sb16QueryInterface;
2829	pThis->cmd = -1;
2830
2831	pThis->csp_regs[5] = 1;
2832	pThis->csp_regs[9] = 0xf8;
2833
2834	RTListInit(&pThis->lstDrv);
2835
2836	/*
2837	* Validate and read config data.
2838	*/
2839	/* Note: For now we only support the one-and-only output stream. */
2840	PSB16STREAM pStream = &pThis->aStreams[SB16_IDX_OUT];
2841
2842	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IRQ\|DMA\|DMA16\|Port\|Version\|TimerHz\|DebugEnabled\|DebugPathOut", "");
2843	int rc = pHlp->pfnCFGMQueryU8Def(pCfg, "IRQ", &pStream->HwCfgDefault.uIrq, 5);
2844	if (RT_FAILURE(rc))
2845	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Failed to get the \"IRQ\" value"));
2846	/* Sanity-check supported SB16 IRQs. */
2847	if ( 2 != pStream->HwCfgDefault.uIrq
2848	&& 5 != pStream->HwCfgDefault.uIrq
2849	&& 7 != pStream->HwCfgDefault.uIrq
2850	&& 10 != pStream->HwCfgDefault.uIrq)
2851	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Invalid \"IRQ\" value."));
2852	pStream->HwCfgRuntime.uIrq = pStream->HwCfgDefault.uIrq;
2853
2854	rc = pHlp->pfnCFGMQueryU8Def(pCfg, "DMA", &pStream->HwCfgDefault.uDmaChanLow, 1);
2855	if (RT_FAILURE(rc))
2856	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Failed to get the \"DMA\" value"));
2857	if ( 0 != pStream->HwCfgDefault.uDmaChanLow
2858	&& 1 != pStream->HwCfgDefault.uDmaChanLow
2859	&& 3 != pStream->HwCfgDefault.uDmaChanLow)
2860	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Invalid \"DMA\" value."));
2861	pStream->HwCfgRuntime.uDmaChanLow = pStream->HwCfgDefault.uDmaChanLow;
2862
2863	rc = pHlp->pfnCFGMQueryU8Def(pCfg, "DMA16", &pStream->HwCfgDefault.uDmaChanHigh, 5);
2864	if (RT_FAILURE(rc))
2865	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Failed to get the \"DMA16\" value"));
2866	if ( 5 != pStream->HwCfgDefault.uDmaChanHigh
2867	&& 6 != pStream->HwCfgDefault.uDmaChanHigh
2868	&& 7 != pStream->HwCfgDefault.uDmaChanHigh)
2869	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Invalid \"DMA16\" value."));
2870	pStream->HwCfgRuntime.uDmaChanHigh = pStream->HwCfgDefault.uDmaChanHigh;
2871
2872	rc = pHlp->pfnCFGMQueryPortDef(pCfg, "Port", &pStream->HwCfgDefault.uPort, 0x220);
2873	if (RT_FAILURE(rc))
2874	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Failed to get the \"Port\" value"));
2875	/* Sanity-check supported SB16 ports. */
2876	if ( 0x220 != pStream->HwCfgDefault.uPort
2877	&& 0x240 != pStream->HwCfgDefault.uPort
2878	&& 0x260 != pStream->HwCfgDefault.uPort
2879	&& 0x280 != pStream->HwCfgDefault.uPort)
2880	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Invalid \"Port\" value. Did you specify it as a hex value (e.g. 0x220)?"));
2881	pStream->HwCfgRuntime.uPort = pStream->HwCfgDefault.uPort;
2882
2883	rc = pHlp->pfnCFGMQueryU16Def(pCfg, "Version", &pStream->HwCfgDefault.uVer, 0x0405);
2884	if (RT_FAILURE(rc))
2885	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Failed to get the \"Version\" value"));
2886	pStream->HwCfgRuntime.uVer = pStream->HwCfgDefault.uVer;
2887
2888	rc = pHlp->pfnCFGMQueryU16Def(pCfg, "TimerHz", &pStream->uTimerHz, SB16_TIMER_HZ_DEFAULT);
2889	if (RT_FAILURE(rc))
2890	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: failed to read Hertz rate as unsigned integer"));
2891	if (pStream->uTimerHz == 0)
2892	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Hertz rate is invalid"));
2893	if (pStream->uTimerHz > 2048)
2894	return PDMDEV_SET_ERROR(pDevIns, rc, N_("SB16 configuration error: Maximum Hertz rate is 2048"));
2895
2896	rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "DebugEnabled", &pThis->Dbg.fEnabled, false);
2897	if (RT_FAILURE(rc))
2898	return PDMDEV_SET_ERROR(pDevIns, rc,
2899	N_("SB16 configuration error: failed to read debugging enabled flag as boolean"));
2900
2901	rc = pHlp->pfnCFGMQueryStringAllocDef(pCfg, "DebugPathOut", &pThis->Dbg.pszOutPath, NULL);
2902	if (RT_FAILURE(rc))
2903	return PDMDEV_SET_ERROR(pDevIns, rc,
2904	N_("SB16 configuration error: failed to read debugging output path flag as string"));
2905
2906	if (pThis->Dbg.fEnabled)
2907	LogRel2(("SB16: Debug output will be saved to '%s'\n", pThis->Dbg.pszOutPath));
2908
2909	/*
2910	* Create internal software mixer.
2911	* Must come before we do the device's mixer reset.
2912	*/
2913	rc = AudioMixerCreate("SB16 Mixer", 0 /* uFlags */, &pThis->pMixer);
2914	AssertRCReturn(rc, rc);
2915
2916	AssertRCReturn(rc, rc);
2917	rc = AudioMixerCreateSink(pThis->pMixer, "PCM Output",
2918	PDMAUDIODIR_OUT, pDevIns, &pThis->pSinkOut);
2919	AssertRCReturn(rc, rc);
2920
2921	/*
2922	* Create all hardware streams.
2923	* For now we have one stream only, namely the output (playback) stream.
2924	*/
2925	AssertCompile(RT_ELEMENTS(pThis->aStreams) == SB16_MAX_STREAMS);
2926	for (unsigned i = 0; i < SB16_MAX_STREAMS; i++)
2927	{
2928	rc = sb16StreamCreate(pThis, &pThis->aStreams[i], i /* uIdx */);
2929	AssertRCReturn(rc, rc);
2930	}
2931
2932	/*
2933	* Setup the mixer now that we've got the irq and dma channel numbers.
2934	*/
2935	pThis->mixer_regs[0x80] = magic_of_irq(pStream->HwCfgRuntime.uIrq);
2936	pThis->mixer_regs[0x81] = (1 << pStream->HwCfgRuntime.uDmaChanLow) \| (1 << pStream->HwCfgRuntime.uDmaChanHigh);
2937	pThis->mixer_regs[0x82] = 2 << 5;
2938
2939	sb16MixerReset(pThis);
2940
2941	/*
2942	* Create timers.
2943	*/
2944	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, sb16TimerIRQ, pThis,
2945	TMTIMER_FLAGS_DEFAULT_CRIT_SECT \| TMTIMER_FLAGS_NO_RING0, "SB16 IRQ", &pThis->hTimerIRQ);
2946	AssertRCReturn(rc, rc);
2947
2948	static const char * const s_apszNames[] = { "SB16 OUT" };
2949	AssertCompile(RT_ELEMENTS(s_apszNames) == SB16_MAX_STREAMS);
2950	for (unsigned i = 0; i < SB16_MAX_STREAMS; i++)
2951	{
2952	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, sb16TimerIO, &pThis->aStreams[i],
2953	TMTIMER_FLAGS_DEFAULT_CRIT_SECT \| TMTIMER_FLAGS_NO_RING0, s_apszNames[i], &pThis->aStreams[i].hTimerIO);
2954	AssertRCReturn(rc, rc);
2955
2956	pThis->aStreams[i].cTicksTimerIOInterval = PDMDevHlpTimerGetFreq(pDevIns, pThis->aStreams[i].hTimerIO)
2957	/ pThis->aStreams[i].uTimerHz;
2958	pThis->aStreams[i].tsTimerIO = PDMDevHlpTimerGet(pDevIns, pThis->aStreams[i].hTimerIO);
2959	}
2960
2961	/*
2962	* Register I/O and DMA.
2963	*/
2964	static const IOMIOPORTDESC s_aAllDescs[] =
2965	{
2966	{ "FM Music Status Port", "FM Music Register Address Port", NULL, NULL }, // 00h
2967	{ NULL, "FM Music Data Port", NULL, NULL }, // 01h
2968	{ "Advanced FM Music Status Port", "Advanced FM Music Register Address Port", NULL, NULL }, // 02h
2969	{ NULL, "Advanced FM Music Data Port", NULL, NULL }, // 03h
2970	{ NULL, "Mixer chip Register Address Port", NULL, NULL }, // 04h
2971	{ "Mixer chip Data Port", NULL, NULL, NULL }, // 05h
2972	{ NULL, "DSP Reset", NULL, NULL }, // 06h
2973	{ "Unused7", "Unused7", NULL, NULL }, // 07h
2974	{ "FM Music Status Port", "FM Music Register Port", NULL, NULL }, // 08h
2975	{ NULL, "FM Music Data Port", NULL, NULL }, // 09h
2976	{ "DSP Read Data Port", NULL, NULL, NULL }, // 0Ah
2977	{ "UnusedB", "UnusedB", NULL, NULL }, // 0Bh
2978	{ "DSP Write-Buffer Status", "DSP Write Command/Data", NULL, NULL }, // 0Ch
2979	{ "UnusedD", "UnusedD", NULL, NULL }, // 0Dh
2980	{ "DSP Read-Buffer Status", NULL, NULL, NULL }, // 0Eh
2981	{ "IRQ16ACK", NULL, NULL, NULL }, // 0Fh
2982	{ "CD-ROM Data Register", "CD-ROM Command Register", NULL, NULL }, // 10h
2983	{ "CD-ROM Status Register", NULL, NULL, NULL }, // 11h
2984	{ NULL, "CD-ROM Reset Register", NULL, NULL }, // 12h
2985	{ NULL, "CD-ROM Enable Register", NULL, NULL }, // 13h
2986	{ NULL, NULL, NULL, NULL },
2987	};
2988
2989	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pStream->HwCfgRuntime.uPort + 0x04 /uPort/, 2 /cPorts/,
2990	sb16IoPortMixerWrite, sb16IoPortMixerRead,
2991	"SB16 - Mixer", &s_aAllDescs[4], &pThis->hIoPortsMixer);
2992	AssertRCReturn(rc, rc);
2993	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, pStream->HwCfgRuntime.uPort + 0x06 /uPort/, 10 /cPorts/,
2994	sb16IoPortDspWrite, sb16IoPortDspRead,
2995	"SB16 - DSP", &s_aAllDescs[6], &pThis->hIoPortsDsp);
2996	AssertRCReturn(rc, rc);
2997
2998	rc = PDMDevHlpDMARegister(pDevIns, pStream->HwCfgRuntime.uDmaChanHigh, sb16DMARead, &pThis->aStreams[SB16_IDX_OUT] /* pvUser */);
2999	AssertRCReturn(rc, rc);
3000	rc = PDMDevHlpDMARegister(pDevIns, pStream->HwCfgRuntime.uDmaChanLow, sb16DMARead, &pThis->aStreams[SB16_IDX_OUT] /* pvUser */);
3001	AssertRCReturn(rc, rc);
3002
3003	/*
3004	* Register Saved state.
3005	*/
3006	rc = PDMDevHlpSSMRegister3(pDevIns, SB16_SAVE_STATE_VERSION, sizeof(SB16STATE), sb16LiveExec, sb16SaveExec, sb16LoadExec);
3007	AssertRCReturn(rc, rc);
3008
3009	LogRel2(("SB16: Using port %#x, DMA%RU8, IRQ%RU8\n",
3010	pStream->HwCfgRuntime.uPort, pStream->HwCfgRuntime.uDmaChanLow, pStream->HwCfgRuntime.uIrq));
3011
3012	/*
3013	* Attach drivers. We ASSUME they are configured consecutively without any
3014	* gaps, so we stop when we hit the first LUN w/o a driver configured.
3015	*/
3016	for (unsigned iLun = 0; ; iLun++)
3017	{
3018	AssertBreak(iLun < UINT8_MAX);
3019	LogFunc(("Trying to attach driver for LUN#%u ...\n", iLun));
3020	rc = sb16AttachInternal(pThis, iLun, NULL /* ppDrv */);
3021	if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
3022	{
3023	LogFunc(("cLUNs=%u\n", iLun));
3024	break;
3025	}
3026	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("LUN#%u: rc=%Rrc\n", iLun, rc), rc);
3027	}
3028
3029	sb16DspCmdResetLegacy(pThis);
3030
3031	/*
3032	* Register statistics.
3033	*/
3034	# ifdef VBOX_WITH_STATISTICS
3035	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTimerIO, STAMTYPE_PROFILE, "Timer", STAMUNIT_TICKS_PER_CALL, "Profiling sb16TimerIO.");
3036	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatBytesRead, STAMTYPE_COUNTER, "BytesRead", STAMUNIT_BYTES, "Bytes read from SB16 emulation.");
3037	# endif
3038	for (unsigned idxStream = 0; idxStream < RT_ELEMENTS(pThis->aStreams); idxStream++)
3039	{
3040	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStreams[idxStream].State.offRead, STAMTYPE_U64, STAMVISIBILITY_USED, STAMUNIT_BYTES,
3041	"Virtual internal buffer read position.", "Stream%u/offRead", idxStream);
3042	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStreams[idxStream].State.offWrite, STAMTYPE_U64, STAMVISIBILITY_USED, STAMUNIT_BYTES,
3043	"Virtual internal buffer write position.", "Stream%u/offWrite", idxStream);
3044	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStreams[idxStream].State.StatDmaBufSize, STAMTYPE_U32, STAMVISIBILITY_USED, STAMUNIT_BYTES,
3045	"Size of the internal DMA buffer.", "Stream%u/DMABufSize", idxStream);
3046	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->aStreams[idxStream].State.StatDmaBufUsed, STAMTYPE_U32, STAMVISIBILITY_USED, STAMUNIT_BYTES,
3047	"Number of bytes used in the internal DMA buffer.", "Stream%u/DMABufUsed", idxStream);
3048	}
3049
3050	/*
3051	* Debug info items.
3052	*/
3053	//PDMDevHlpDBGFInfoRegister(pDevIns, "sb16", "SB16 registers. (sb16 [register case-insensitive])", sb16DbgInfo);
3054	//PDMDevHlpDBGFInfoRegister(pDevIns, "sb16stream", "SB16 stream info. (sb16stream [stream number])", sb16DbgInfoStream);
3055	PDMDevHlpDBGFInfoRegister(pDevIns, "sb16mixer", "SB16 mixer state.", sb16DbgInfoMixer);
3056
3057	return VINF_SUCCESS;
3058	}
3059
3060	const PDMDEVREG g_DeviceSB16 =
3061	{
3062	/* .u32Version = */ PDM_DEVREG_VERSION,
3063	/* .uReserved0 = */ 0,
3064	/* .szName = */ "sb16",
3065	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_NEW_STYLE
3066	\| PDM_DEVREG_FLAGS_FIRST_POWEROFF_NOTIFICATION /* stream clearnup with working drivers */,
3067	/* .fClass = */ PDM_DEVREG_CLASS_AUDIO,
3068	/* .cMaxInstances = */ 1,
3069	/* .uSharedVersion = */ 42,
3070	/* .cbInstanceShared = */ sizeof(SB16STATE),
3071	/* .cbInstanceCC = */ 0,
3072	/* .cbInstanceRC = */ 0,
3073	/* .cMaxPciDevices = */ 0,
3074	/* .cMaxMsixVectors = */ 0,
3075	/* .pszDescription = */ "Sound Blaster 16 Controller",
3076	#if defined(IN_RING3)
3077	/* .pszRCMod = */ "",
3078	/* .pszR0Mod = */ "",
3079	/* .pfnConstruct = */ sb16Construct,
3080	/* .pfnDestruct = */ sb16Destruct,
3081	/* .pfnRelocate = */ NULL,
3082	/* .pfnMemSetup = */ NULL,
3083	/* .pfnPowerOn = */ NULL,
3084	/* .pfnReset = */ sb16DevReset,
3085	/* .pfnSuspend = */ NULL,
3086	/* .pfnResume = */ NULL,
3087	/* .pfnAttach = */ sb16Attach,
3088	/* .pfnDetach = */ sb16Detach,
3089	/* .pfnQueryInterface = */ NULL,
3090	/* .pfnInitComplete = */ NULL,
3091	/* .pfnPowerOff = */ sb16PowerOff,
3092	/* .pfnSoftReset = */ NULL,
3093	/* .pfnReserved0 = */ NULL,
3094	/* .pfnReserved1 = */ NULL,
3095	/* .pfnReserved2 = */ NULL,
3096	/* .pfnReserved3 = */ NULL,
3097	/* .pfnReserved4 = */ NULL,
3098	/* .pfnReserved5 = */ NULL,
3099	/* .pfnReserved6 = */ NULL,
3100	/* .pfnReserved7 = */ NULL,
3101	#elif defined(IN_RING0)
3102	/* .pfnEarlyConstruct = */ NULL,
3103	/* .pfnConstruct = */ NULL,
3104	/* .pfnDestruct = */ NULL,
3105	/* .pfnFinalDestruct = */ NULL,
3106	/* .pfnRequest = */ NULL,
3107	/* .pfnReserved0 = */ NULL,
3108	/* .pfnReserved1 = */ NULL,
3109	/* .pfnReserved2 = */ NULL,
3110	/* .pfnReserved3 = */ NULL,
3111	/* .pfnReserved4 = */ NULL,
3112	/* .pfnReserved5 = */ NULL,
3113	/* .pfnReserved6 = */ NULL,
3114	/* .pfnReserved7 = */ NULL,
3115	#elif defined(IN_RC)
3116	/* .pfnConstruct = */ NULL,
3117	/* .pfnReserved0 = */ NULL,
3118	/* .pfnReserved1 = */ NULL,
3119	/* .pfnReserved2 = */ NULL,
3120	/* .pfnReserved3 = */ NULL,
3121	/* .pfnReserved4 = */ NULL,
3122	/* .pfnReserved5 = */ NULL,
3123	/* .pfnReserved6 = */ NULL,
3124	/* .pfnReserved7 = */ NULL,
3125	#else
3126	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
3127	#endif
3128	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
3129	};
3130

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