HDAStream.h@ 82420

Last change on this file since 82420 was 82420, checked in by vboxsync, 5 years ago
DevHDA: The HDASTREAM::CritSect is not needed unless VBOX_WITH_AUDIO_HDA_ASYNC_IO is defined, the critical section of the device will take care of the serializing then. The hdaR3StreamLock/Unlock functions are left as no-ops (strict builds checks for device critsect ownership). bugref:9218
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 12.0 KB

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1	/* $Id: HDAStream.h 82420 2019-12-05 13:51:16Z vboxsync $ */
2	/** @file
3	* HDAStream.h - Streams for HD Audio.
4	*/
5
6	/*
7	* Copyright (C) 2017-2019 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	#ifndef VBOX_INCLUDED_SRC_Audio_HDAStream_h
19	#define VBOX_INCLUDED_SRC_Audio_HDAStream_h
20	#ifndef RT_WITHOUT_PRAGMA_ONCE
21	# pragma once
22	#endif
23
24	#include "DevHDACommon.h"
25	#include "HDAStreamMap.h"
26	#include "HDAStreamPeriod.h"
27
28
29	#ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
30	/**
31	* HDA stream's state for asynchronous I/O.
32	*/
33	typedef struct HDASTREAMSTATEAIO
34	{
35	/** Thread handle for the actual I/O thread. */
36	RTTHREAD Thread;
37	/** Event for letting the thread know there is some data to process. */
38	RTSEMEVENT Event;
39	/** Critical section for synchronizing access. */
40	RTCRITSECT CritSect;
41	/** Started indicator. */
42	volatile bool fStarted;
43	/** Shutdown indicator. */
44	volatile bool fShutdown;
45	/** Whether the thread should do any data processing or not. */
46	volatile bool fEnabled;
47	bool afPadding[1+4];
48	} HDASTREAMSTATEAIO;
49	/** Pointer to a HDA stream's asynchronous I/O state. */
50	typedef HDASTREAMSTATEAIO *PHDASTREAMSTATEAIO;
51	#endif
52
53	/**
54	* Structure containing HDA stream debug stuff, configurable at runtime.
55	*/
56	typedef struct HDASTREAMDEBUGRT
57	{
58	/** Whether debugging is enabled or not. */
59	bool fEnabled;
60	uint8_t Padding[7];
61	/** File for dumping stream reads / writes.
62	* For input streams, this dumps data being written to the device FIFO,
63	* whereas for output streams this dumps data being read from the device FIFO. */
64	R3PTRTYPE(PPDMAUDIOFILE) pFileStream;
65	/** File for dumping raw DMA reads / writes.
66	* For input streams, this dumps data being written to the device DMA,
67	* whereas for output streams this dumps data being read from the device DMA. */
68	R3PTRTYPE(PPDMAUDIOFILE) pFileDMARaw;
69	/** File for dumping mapped (that is, extracted) DMA reads / writes. */
70	R3PTRTYPE(PPDMAUDIOFILE) pFileDMAMapped;
71	} HDASTREAMDEBUGRT;
72
73	/**
74	* Structure containing HDA stream debug information.
75	*/
76	typedef struct HDASTREAMDEBUG
77	{
78	#ifdef DEBUG
79	/** Critical section to serialize access if needed. */
80	RTCRITSECT CritSect;
81	uint32_t Padding0[2];
82	/** Number of total read accesses. */
83	uint64_t cReadsTotal;
84	/** Number of total DMA bytes read. */
85	uint64_t cbReadTotal;
86	/** Timestamp (in ns) of last read access. */
87	uint64_t tsLastReadNs;
88	/** Number of total write accesses. */
89	uint64_t cWritesTotal;
90	/** Number of total DMA bytes written. */
91	uint64_t cbWrittenTotal;
92	/** Number of total write accesses since last iteration (Hz). */
93	uint64_t cWritesHz;
94	/** Number of total DMA bytes written since last iteration (Hz). */
95	uint64_t cbWrittenHz;
96	/** Timestamp (in ns) of beginning a new write slot. */
97	uint64_t tsWriteSlotBegin;
98	/** Number of current silence samples in a (consecutive) row. */
99	uint64_t csSilence;
100	/** Number of silent samples in a row to consider an audio block as audio gap (silence). */
101	uint64_t cSilenceThreshold;
102	/** How many bytes to skip in an audio stream before detecting silence.
103	* (useful for intros and silence at the beginning of a song). */
104	uint64_t cbSilenceReadMin;
105	#endif
106	/** Runtime debug info. */
107	HDASTREAMDEBUGRT Runtime;
108	} HDASTREAMDEBUG;
109	typedef HDASTREAMDEBUG *PHDASTREAMDEBUG;
110
111	/**
112	* Internal state of a HDA stream.
113	*/
114	typedef struct HDASTREAMSTATE
115	{
116	/** Current BDLE to use. Wraps around to 0 if
117	* maximum (cBDLE) is reached. */
118	uint16_t uCurBDLE;
119	/** Flag indicating whether this stream currently is
120	* in reset mode and therefore not acccessible by the guest. */
121	volatile bool fInReset;
122	/** Flag indicating if the stream is in running state or not. */
123	volatile bool fRunning;
124	/** Unused, padding. */
125	uint8_t Padding0[4];
126	#ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
127	/** Asynchronous I/O state members. */
128	HDASTREAMSTATEAIO AIO;
129	#endif
130	/** This stream's data mapping. */
131	HDASTREAMMAP Mapping;
132	/** Current BDLE (Buffer Descriptor List Entry). */
133	HDABDLE BDLE;
134	/** Circular buffer (FIFO) for holding DMA'ed data. */
135	R3PTRTYPE(PRTCIRCBUF) pCircBuf;
136	#if HC_ARCH_BITS == 32
137	RTR3PTR Padding1;
138	#endif
139	/** Timestamp of the last DMA data transfer. */
140	uint64_t tsTransferLast;
141	/** Timestamp of the next DMA data transfer.
142	* Next for determining the next scheduling window.
143	* Can be 0 if no next transfer is scheduled. */
144	uint64_t tsTransferNext;
145	/** Total transfer size (in bytes) of a transfer period. */
146	uint32_t cbTransferSize;
147	/** Transfer chunk size (in bytes) of a transfer period. */
148	uint32_t cbTransferChunk;
149	/** How many bytes already have been processed in within
150	* the current transfer period. */
151	uint32_t cbTransferProcessed;
152	/** How many interrupts are pending due to
153	* BDLE interrupt-on-completion (IOC) bits set. */
154	uint8_t cTransferPendingInterrupts;
155	uint8_t Padding2[2];
156	/** The stream's timer Hz rate.
157	* This value can can be different from the device's default Hz rate,
158	* depending on the rate the stream expects (e.g. for 5.1 speaker setups).
159	* Set in hdaR3StreamInit(). */
160	uint16_t uTimerHz;
161	/** Number of audio data frames for the position adjustment.
162	* 0 if no position adjustment is needed. */
163	uint16_t cfPosAdjustDefault;
164	/** How many audio data frames are left to be processed
165	* for the position adjustment handling.
166	*
167	* 0 if position adjustment handling is done or inactive. */
168	uint16_t cfPosAdjustLeft;
169	/** (Virtual) clock ticks per byte. */
170	uint64_t cTicksPerByte;
171	/** (Virtual) clock ticks per transfer. */
172	uint64_t cTransferTicks;
173	/** The stream's period. Need for timing. */
174	HDASTREAMPERIOD Period;
175	/** The stream's current configuration.
176	* Should match SDFMT. */
177	PDMAUDIOSTREAMCFG Cfg;
178	uint32_t Padding4;
179	#ifdef HDA_USE_DMA_ACCESS_HANDLER
180	/** List of DMA handlers. */
181	RTLISTANCHORR3 lstDMAHandlers;
182	#endif
183	/** Timestamp (in ns) of last stream update. */
184	uint64_t tsLastUpdateNs;
185	} HDASTREAMSTATE;
186	AssertCompileSizeAlignment(HDASTREAMSTATE, 8);
187	/** Pointer to the internal state of an HDA stream. */
188	typedef HDASTREAMSTATE *PHDASTREAMSTATE;
189
190	/**
191	* An HDA stream (SDI / SDO).
192	*
193	* @note This HDA stream has nothing to do with a regular audio stream handled
194	* by the audio connector or the audio mixer. This HDA stream is a serial
195	* data in/out stream (SDI/SDO) defined in hardware and can contain
196	* multiple audio streams in one single SDI/SDO (interleaving streams).
197	*
198	* How a specific SDI/SDO is mapped to our internal audio streams relies on the
199	* stream channel mappings.
200	*
201	* Contains only register values which do not change until a stream reset
202	* occurs.
203	*/
204	typedef struct HDASTREAM
205	{
206	/** Stream descriptor number (SDn). */
207	uint8_t u8SD;
208	/** Current channel index.
209	* For a stereo stream, this is u8Channel + 1. */
210	uint8_t u8Channel;
211	uint8_t abPadding0[6];
212	/** DMA base address (SDnBDPU - SDnBDPL).
213	* Will be updated in hdaR3StreamInit(). */
214	uint64_t u64BDLBase;
215	/** Cyclic Buffer Length (SDnCBL).
216	* Represents the size of the ring buffer.
217	* Will be updated in hdaR3StreamInit(). */
218	uint32_t u32CBL;
219	/** Format (SDnFMT).
220	* Will be updated in hdaR3StreamInit(). */
221	uint16_t u16FMT;
222	/** FIFO Size (FIFOS).
223	* Maximum number of bytes that may have been DMA'd into
224	* memory but not yet transmitted on the link.
225	*
226	* Will be updated in hdaR3StreamInit(). */
227	uint16_t u16FIFOS;
228	/** FIFO Watermark. */
229	uint16_t u16FIFOW;
230	/** Last Valid Index (SDnLVI).
231	* Will be updated in hdaR3StreamInit(). */
232	uint16_t u16LVI;
233	uint16_t au16Padding1[2];
234	/** Pointer to the HDA state this stream is attached to. */
235	R3PTRTYPE(PHDASTATE) pHDAState;
236	/** Pointer to HDA sink this stream is attached to. */
237	R3PTRTYPE(PHDAMIXERSINK) pMixSink;
238	/** The timer for pumping data thru the attached LUN drivers. */
239	TMTIMERHANDLE hTimer;
240	#ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
241	/** The stream's critical section to serialize access between the async I/O
242	* thread and (basically) the guest. */
243	RTCRITSECT CritSect;
244	#endif
245	/** Internal state of this stream. */
246	HDASTREAMSTATE State;
247	/** Debug information. */
248	HDASTREAMDEBUG Dbg;
249	} HDASTREAM;
250	/** Pointer to an HDA stream (SDI / SDO). */
251	typedef HDASTREAM *PHDASTREAM;
252
253	#ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
254	/**
255	* HDA stream thread context (arguments).
256	*/
257	typedef struct HDASTREAMTHREADCTX
258	{
259	PHDASTATE pThis;
260	PHDASTREAM pStream;
261	} HDASTREAMTHREADCTX, *PHDASTREAMTHREADCTX;
262	#endif
263
264	#ifdef IN_RING3
265
266	/** @name Stream functions.
267	* @{
268	*/
269	int hdaR3StreamCreate(PHDASTREAM pStream, PHDASTATE pThis, uint8_t u8SD);
270	void hdaR3StreamDestroy(PHDASTREAM pStream);
271	int hdaR3StreamInit(PPDMDEVINS pDevIns, PHDASTREAM pStream, uint8_t uSD);
272	void hdaR3StreamReset(PHDASTATE pThis, PHDASTREAM pStream, uint8_t uSD);
273	int hdaR3StreamEnable(PHDASTREAM pStream, bool fEnable);
274	uint32_t hdaR3StreamGetPosition(PHDASTATE pThis, PHDASTREAM pStream);
275	void hdaR3StreamSetPosition(PHDASTREAM pStream, uint32_t u32LPIB);
276	uint32_t hdaR3StreamGetFree(PHDASTREAM pStream);
277	uint32_t hdaR3StreamGetUsed(PHDASTREAM pStream);
278	bool hdaR3StreamTransferIsScheduled(PHDASTREAM pStream, uint64_t tsNow);
279	uint64_t hdaR3StreamTransferGetNext(PHDASTREAM pStream);
280	void hdaR3StreamLock(PHDASTREAM pStream);
281	void hdaR3StreamUnlock(PHDASTREAM pStream);
282	int hdaR3StreamRead(PHDASTREAM pStream, uint32_t cbToRead, uint32_t *pcbRead);
283	int hdaR3StreamWrite(PHDASTREAM pStream, const void pvBuf, uint32_t cbBuf, uint32_t pcbWritten);
284	void hdaR3StreamUpdate(PPDMDEVINS pDevIns, PHDASTREAM pStream, bool fAsync);
285	# ifdef HDA_USE_DMA_ACCESS_HANDLER
286	bool hdaR3StreamRegisterDMAHandlers(PHDASTREAM pStream);
287	void hdaR3StreamUnregisterDMAHandlers(PHDASTREAM pStream);
288	# endif
289	/** @} */
290
291	/** @name Async I/O stream functions.
292	* @{
293	*/
294	# ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
295	DECLCALLBACK(int) hdaR3StreamAsyncIOThread(RTTHREAD hThreadSelf, void *pvUser);
296	int hdaR3StreamAsyncIOCreate(PHDASTREAM pStream);
297	int hdaR3StreamAsyncIODestroy(PHDASTREAM pStream);
298	int hdaR3StreamAsyncIONotify(PHDASTREAM pStream);
299	void hdaR3StreamAsyncIOLock(PHDASTREAM pStream);
300	void hdaR3StreamAsyncIOUnlock(PHDASTREAM pStream);
301	void hdaR3StreamAsyncIOEnable(PHDASTREAM pStream, bool fEnable);
302	# endif /* VBOX_WITH_AUDIO_HDA_ASYNC_IO */
303	/** @} */
304
305	#endif /* IN_RING3 */
306	#endif /* !VBOX_INCLUDED_SRC_Audio_HDAStream_h */
307

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source: vbox/trunk/src/VBox/Devices/Audio/HDAStream.h@ 82420

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