| 1 | /* $Id: HDAStream.h 87830 2021-02-22 08:40:44Z vboxsync $ */
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| 2 | /** @file
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| 3 | * HDAStream.h - Streams for HD Audio.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2017-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef VBOX_INCLUDED_SRC_Audio_HDAStream_h
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| 19 | #define VBOX_INCLUDED_SRC_Audio_HDAStream_h
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| 20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 21 | # pragma once
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| 22 | #endif
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| 23 |
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| 24 | #include "DevHDACommon.h"
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| 25 | #include "HDAStreamMap.h"
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| 26 | #include "HDAStreamPeriod.h"
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| 27 |
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| 28 |
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| 29 | #ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
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| 30 | /**
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| 31 | * HDA stream's state for asynchronous I/O.
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| 32 | */
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| 33 | typedef struct HDASTREAMSTATEAIO
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| 34 | {
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| 35 | /** Thread handle for the actual I/O thread. */
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| 36 | RTTHREAD hThread;
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| 37 | /** Event for letting the thread know there is some data to process. */
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| 38 | RTSEMEVENT hEvent;
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| 39 | /** Critical section for synchronizing access. */
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| 40 | RTCRITSECT CritSect;
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| 41 | /** Started indicator. */
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| 42 | volatile bool fStarted;
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| 43 | /** Shutdown indicator. */
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| 44 | volatile bool fShutdown;
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| 45 | /** Whether the thread should do any data processing or not. */
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| 46 | volatile bool fEnabled;
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| 47 | bool afPadding[1+4];
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| 48 | } HDASTREAMSTATEAIO;
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| 49 | /** Pointer to a HDA stream's asynchronous I/O state. */
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| 50 | typedef HDASTREAMSTATEAIO *PHDASTREAMSTATEAIO;
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| 51 | #endif
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| 52 |
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| 53 | /**
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| 54 | * Structure containing HDA stream debug stuff, configurable at runtime.
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| 55 | */
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| 56 | typedef struct HDASTREAMDEBUGRT
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| 57 | {
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| 58 | /** Whether debugging is enabled or not. */
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| 59 | bool fEnabled;
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| 60 | uint8_t Padding[7];
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| 61 | /** File for dumping stream reads / writes.
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| 62 | * For input streams, this dumps data being written to the device FIFO,
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| 63 | * whereas for output streams this dumps data being read from the device FIFO. */
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| 64 | R3PTRTYPE(PPDMAUDIOFILE) pFileStream;
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| 65 | /** File for dumping raw DMA reads / writes.
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| 66 | * For input streams, this dumps data being written to the device DMA,
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| 67 | * whereas for output streams this dumps data being read from the device DMA. */
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| 68 | R3PTRTYPE(PPDMAUDIOFILE) pFileDMARaw;
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| 69 | /** File for dumping mapped (that is, extracted) DMA reads / writes. */
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| 70 | R3PTRTYPE(PPDMAUDIOFILE) pFileDMAMapped;
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| 71 | } HDASTREAMDEBUGRT;
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| 72 |
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| 73 | /**
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| 74 | * Structure containing HDA stream debug information.
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| 75 | */
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| 76 | typedef struct HDASTREAMDEBUG
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| 77 | {
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| 78 | #ifdef DEBUG
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| 79 | /** Critical section to serialize access if needed. */
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| 80 | RTCRITSECT CritSect;
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| 81 | uint32_t Padding0[2];
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| 82 | /** Number of total read accesses. */
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| 83 | uint64_t cReadsTotal;
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| 84 | /** Number of total DMA bytes read. */
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| 85 | uint64_t cbReadTotal;
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| 86 | /** Timestamp (in ns) of last read access. */
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| 87 | uint64_t tsLastReadNs;
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| 88 | /** Number of total write accesses. */
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| 89 | uint64_t cWritesTotal;
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| 90 | /** Number of total DMA bytes written. */
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| 91 | uint64_t cbWrittenTotal;
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| 92 | /** Number of total write accesses since last iteration (Hz). */
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| 93 | uint64_t cWritesHz;
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| 94 | /** Number of total DMA bytes written since last iteration (Hz). */
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| 95 | uint64_t cbWrittenHz;
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| 96 | /** Timestamp (in ns) of beginning a new write slot. */
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| 97 | uint64_t tsWriteSlotBegin;
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| 98 | /** Number of current silence samples in a (consecutive) row. */
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| 99 | uint64_t csSilence;
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| 100 | /** Number of silent samples in a row to consider an audio block as audio gap (silence). */
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| 101 | uint64_t cSilenceThreshold;
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| 102 | /** How many bytes to skip in an audio stream before detecting silence.
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| 103 | * (useful for intros and silence at the beginning of a song). */
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| 104 | uint64_t cbSilenceReadMin;
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| 105 | #endif
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| 106 | /** Runtime debug info. */
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| 107 | HDASTREAMDEBUGRT Runtime;
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| 108 | } HDASTREAMDEBUG;
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| 109 | typedef HDASTREAMDEBUG *PHDASTREAMDEBUG;
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| 110 |
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| 111 | /**
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| 112 | * Internal state of a HDA stream.
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| 113 | */
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| 114 | typedef struct HDASTREAMSTATE
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| 115 | {
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| 116 | /** Current BDLE to use. Wraps around to 0 if
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| 117 | * maximum (cBDLE) is reached. */
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| 118 | uint16_t uCurBDLE;
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| 119 | /** Flag indicating whether this stream currently is
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| 120 | * in reset mode and therefore not acccessible by the guest. */
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| 121 | volatile bool fInReset;
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| 122 | /** Flag indicating if the stream is in running state or not. */
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| 123 | volatile bool fRunning;
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| 124 | /** Unused, padding. */
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| 125 | uint8_t abPadding0[4];
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| 126 | /** Current BDLE (Buffer Descriptor List Entry). */
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| 127 | HDABDLE BDLE;
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| 128 | /** Timestamp (absolute, in timer ticks) of the last DMA data transfer. */
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| 129 | uint64_t tsTransferLast;
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| 130 | /** Timestamp (absolute, in timer ticks) of the next DMA data transfer.
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| 131 | * Next for determining the next scheduling window.
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| 132 | * Can be 0 if no next transfer is scheduled. */
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| 133 | uint64_t tsTransferNext;
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| 134 | /** Total transfer size (in bytes) of a transfer period. */
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| 135 | uint32_t cbTransferSize;
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| 136 | /** Transfer chunk size (in bytes) of a transfer period. */
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| 137 | uint32_t cbTransferChunk;
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| 138 | /** How many interrupts are pending due to
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| 139 | * BDLE interrupt-on-completion (IOC) bits set. */
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| 140 | uint8_t cTransferPendingInterrupts;
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| 141 | uint8_t abPadding2[7];
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| 142 | /** The stream's I/O timer Hz rate. */
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| 143 | uint16_t uTimerIoHz;
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| 144 | /** Number of audio data frames for the position adjustment.
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| 145 | * 0 if no position adjustment is needed. */
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| 146 | uint16_t cfPosAdjustDefault;
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| 147 | /** How many audio data frames are left to be processed
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| 148 | * for the position adjustment handling.
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| 149 | *
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| 150 | * 0 if position adjustment handling is done or inactive. */
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| 151 | uint16_t cfPosAdjustLeft;
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| 152 | uint16_t u16Padding3;
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| 153 | /** (Virtual) clock ticks per byte. */
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| 154 | uint64_t cTicksPerByte;
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| 155 | /** (Virtual) clock ticks per transfer. */
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| 156 | uint64_t cTransferTicks;
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| 157 | /** The stream's period. Need for timing. */
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| 158 | HDASTREAMPERIOD Period;
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| 159 | /** The stream's current configuration.
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| 160 | * Should match SDFMT. */
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| 161 | PDMAUDIOSTREAMCFG Cfg;
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| 162 | /** Timestamp (real time, in ns) of last DMA transfer. */
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| 163 | uint64_t tsLastTransferNs;
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| 164 | /** Timestamp (real time, in ns) of last stream read (to backends).
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| 165 | * When running in async I/O mode, this differs from \a tsLastTransferNs,
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| 166 | * because reading / processing will be done in a separate stream. */
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| 167 | uint64_t tsLastReadNs;
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| 168 | } HDASTREAMSTATE;
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| 169 | AssertCompileSizeAlignment(HDASTREAMSTATE, 8);
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| 170 |
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| 171 | /**
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| 172 | * An HDA stream (SDI / SDO) - shared.
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| 173 | *
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| 174 | * @note This HDA stream has nothing to do with a regular audio stream handled
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| 175 | * by the audio connector or the audio mixer. This HDA stream is a serial
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| 176 | * data in/out stream (SDI/SDO) defined in hardware and can contain
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| 177 | * multiple audio streams in one single SDI/SDO (interleaving streams).
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| 178 | *
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| 179 | * How a specific SDI/SDO is mapped to our internal audio streams relies on the
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| 180 | * stream channel mappings.
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| 181 | *
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| 182 | * Contains only register values which do *not* change until a stream reset
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| 183 | * occurs.
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| 184 | */
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| 185 | typedef struct HDASTREAM
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| 186 | {
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| 187 | /** Stream descriptor number (SDn). */
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| 188 | uint8_t u8SD;
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| 189 | /** Current channel index.
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| 190 | * For a stereo stream, this is u8Channel + 1. */
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| 191 | uint8_t u8Channel;
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| 192 | uint8_t abPadding0[6];
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| 193 | #ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
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| 194 | /** The stream's shared r0/r3 critical section to serialize access between the async I/O
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| 195 | * thread and (basically) the guest. */
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| 196 | PDMCRITSECT CritSect;
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| 197 | #endif
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| 198 | /** DMA base address (SDnBDPU - SDnBDPL).
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| 199 | * Will be updated in hdaR3StreamInit(). */
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| 200 | uint64_t u64BDLBase;
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| 201 | /** Cyclic Buffer Length (SDnCBL).
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| 202 | * Represents the size of the ring buffer.
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| 203 | * Will be updated in hdaR3StreamInit(). */
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| 204 | uint32_t u32CBL;
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| 205 | /** Format (SDnFMT).
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| 206 | * Will be updated in hdaR3StreamInit(). */
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| 207 | uint16_t u16FMT;
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| 208 | /** FIFO Size (checked + translated in bytes, FIFOS).
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| 209 | * Maximum number of bytes that may have been DMA'd into
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| 210 | * memory but not yet transmitted on the link.
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| 211 | *
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| 212 | * Will be updated in hdaR3StreamInit(). */
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| 213 | uint8_t u8FIFOS;
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| 214 | /** FIFO Watermark (checked + translated in bytes, FIFOW). */
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| 215 | uint8_t u8FIFOW;
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| 216 | uint8_t abPadding1[2];
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| 217 | /** FIFO scratch buffer, to avoid intermediate (re-)allocations. */
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| 218 | uint8_t abFIFO[HDA_FIFO_MAX + 1];
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| 219 | /** Last Valid Index (SDnLVI).
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| 220 | * Will be updated in hdaR3StreamInit(). */
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| 221 | uint16_t u16LVI;
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| 222 | /** The timer for pumping data thru the attached LUN drivers. */
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| 223 | TMTIMERHANDLE hTimer;
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| 224 | /** Internal state of this stream. */
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| 225 | HDASTREAMSTATE State;
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| 226 | } HDASTREAM;
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| 227 | /** Pointer to an HDA stream (SDI / SDO). */
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| 228 | typedef HDASTREAM *PHDASTREAM;
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| 229 |
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| 230 |
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| 231 | /**
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| 232 | * An HDA stream (SDI / SDO) - ring-3 bits.
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| 233 | */
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| 234 | typedef struct HDASTREAMR3
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| 235 | {
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| 236 | /** Stream descriptor number (SDn). */
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| 237 | uint8_t u8SD;
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| 238 | uint8_t abPadding[7];
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| 239 | /** The shared state for the parent HDA device. */
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| 240 | R3PTRTYPE(PHDASTATE) pHDAStateShared;
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| 241 | /** The ring-3 state for the parent HDA device. */
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| 242 | R3PTRTYPE(PHDASTATER3) pHDAStateR3;
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| 243 | /** Pointer to HDA sink this stream is attached to. */
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| 244 | R3PTRTYPE(PHDAMIXERSINK) pMixSink;
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| 245 | /** Internal state of this stream. */
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| 246 | struct
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| 247 | {
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| 248 | /** This stream's data mapping. */
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| 249 | HDASTREAMMAP Mapping;
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| 250 | /** Circular buffer (FIFO) for holding DMA'ed data. */
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| 251 | R3PTRTYPE(PRTCIRCBUF) pCircBuf;
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| 252 | #ifdef HDA_USE_DMA_ACCESS_HANDLER
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| 253 | /** List of DMA handlers. */
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| 254 | RTLISTANCHORR3 lstDMAHandlers;
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| 255 | #endif
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| 256 | #ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
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| 257 | /** Asynchronous I/O state members. */
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| 258 | HDASTREAMSTATEAIO AIO;
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| 259 | #endif
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| 260 | } State;
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| 261 | /** Debug bits. */
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| 262 | HDASTREAMDEBUG Dbg;
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| 263 | } HDASTREAMR3;
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| 264 | /** Pointer to an HDA stream (SDI / SDO). */
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| 265 | typedef HDASTREAMR3 *PHDASTREAMR3;
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| 266 |
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| 267 | #ifdef IN_RING3
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| 268 |
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| 269 | /** @name Stream functions (shared).
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| 270 | * @{
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| 271 | */
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| 272 | void hdaStreamLock(PHDASTREAM pStreamShared);
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| 273 | void hdaStreamUnlock(PHDASTREAM pStreamShared);
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| 274 | /** @} */
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| 275 |
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| 276 | /** @name Stream functions (ring-3).
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| 277 | * @{
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| 278 | */
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| 279 | int hdaR3StreamConstruct(PHDASTREAM pStreamShared, PHDASTREAMR3 pStreamR3, PHDASTATE pThis,
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| 280 | PHDASTATER3 pThisCC, uint8_t uSD);
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| 281 | void hdaR3StreamDestroy(PHDASTREAM pStreamShared, PHDASTREAMR3 pStreamR3);
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| 282 | int hdaR3StreamSetUp(PPDMDEVINS pDevIns, PHDASTATE pThis, PHDASTREAM pStreamShared,
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| 283 | PHDASTREAMR3 pStreamR3, uint8_t uSD);
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| 284 | void hdaR3StreamReset(PHDASTATE pThis, PHDASTATER3 pThisCC,
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| 285 | PHDASTREAM pStreamShared, PHDASTREAMR3 pStreamR3, uint8_t uSD);
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| 286 | int hdaR3StreamEnable(PHDASTREAM pStreamShared, PHDASTREAMR3 pStreamR3, bool fEnable);
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| 287 | void hdaR3StreamSetPositionAdd(PHDASTREAM pStreamShared, PPDMDEVINS pDevIns, PHDASTATE pThis, uint32_t uToAdd);
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| 288 | bool hdaR3StreamTransferIsScheduled(PHDASTREAM pStreamShared, uint64_t tsNow);
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| 289 | uint64_t hdaR3StreamTransferGetNext(PHDASTREAM pStreamShared);
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| 290 | void hdaR3StreamUpdate(PPDMDEVINS pDevIns, PHDASTATE pThis, PHDASTATER3 pThisCC,
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| 291 | PHDASTREAM pStreamShared, PHDASTREAMR3 pStreamR3, bool fInTimer);
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| 292 | PHDASTREAM hdaR3StreamR3ToShared(PHDASTREAMR3 pStreamCC);
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| 293 | # ifdef HDA_USE_DMA_ACCESS_HANDLER
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| 294 | bool hdaR3StreamRegisterDMAHandlers(PHDASTREAM pStream);
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| 295 | void hdaR3StreamUnregisterDMAHandlers(PHDASTREAM pStream);
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| 296 | # endif
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| 297 | /** @} */
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| 298 |
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| 299 | /** @name Async I/O stream functions (ring-3).
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| 300 | * @{
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| 301 | */
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| 302 | # ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
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| 303 | int hdaR3StreamAsyncIOCreate(PHDASTREAMR3 pStreamR3);
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| 304 | void hdaR3StreamAsyncIOLock(PHDASTREAMR3 pStreamR3);
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| 305 | void hdaR3StreamAsyncIOUnlock(PHDASTREAMR3 pStreamR3);
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| 306 | void hdaR3StreamAsyncIOEnable(PHDASTREAMR3 pStreamR3, bool fEnable);
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| 307 | # endif /* VBOX_WITH_AUDIO_HDA_ASYNC_IO */
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| 308 | /** @} */
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| 309 |
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| 310 | #endif /* IN_RING3 */
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| 311 | #endif /* !VBOX_INCLUDED_SRC_Audio_HDAStream_h */
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| 312 |
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