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virtio_snd.h
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/* SPDX-License-Identifier: BSD-3-Clause */ /* * Copyright (C) 2021 OpenSynergy GmbH */ #ifndef VIRTIO_SND_IF_H #define VIRTIO_SND_IF_H #include <linux/virtio_types.h> /******************************************************************************* * FEATURE BITS */ enum { /* device supports control elements */ VIRTIO_SND_F_CTLS = 0 }; /******************************************************************************* * CONFIGURATION SPACE */ struct virtio_snd_config { /* # of available physical jacks */ __le32 jacks; /* # of available PCM streams */ __le32 streams; /* # of available channel maps */ __le32 chmaps; /* # of available control elements */ __le32 controls; }; enum { /* device virtqueue indexes */ VIRTIO_SND_VQ_CONTROL = 0, VIRTIO_SND_VQ_EVENT, VIRTIO_SND_VQ_TX, VIRTIO_SND_VQ_RX, /* # of device virtqueues */ VIRTIO_SND_VQ_MAX }; /******************************************************************************* * COMMON DEFINITIONS */ /* supported dataflow directions */ enum { VIRTIO_SND_D_OUTPUT = 0, VIRTIO_SND_D_INPUT }; enum { /* jack control request types */ VIRTIO_SND_R_JACK_INFO = 1, VIRTIO_SND_R_JACK_REMAP, /* PCM control request types */ VIRTIO_SND_R_PCM_INFO = 0x0100, VIRTIO_SND_R_PCM_SET_PARAMS, VIRTIO_SND_R_PCM_PREPARE, VIRTIO_SND_R_PCM_RELEASE, VIRTIO_SND_R_PCM_START, VIRTIO_SND_R_PCM_STOP, /* channel map control request types */ VIRTIO_SND_R_CHMAP_INFO = 0x0200, /* control element request types */ VIRTIO_SND_R_CTL_INFO = 0x0300, VIRTIO_SND_R_CTL_ENUM_ITEMS, VIRTIO_SND_R_CTL_READ, VIRTIO_SND_R_CTL_WRITE, VIRTIO_SND_R_CTL_TLV_READ, VIRTIO_SND_R_CTL_TLV_WRITE, VIRTIO_SND_R_CTL_TLV_COMMAND, /* jack event types */ VIRTIO_SND_EVT_JACK_CONNECTED = 0x1000, VIRTIO_SND_EVT_JACK_DISCONNECTED, /* PCM event types */ VIRTIO_SND_EVT_PCM_PERIOD_ELAPSED = 0x1100, VIRTIO_SND_EVT_PCM_XRUN, /* control element event types */ VIRTIO_SND_EVT_CTL_NOTIFY = 0x1200, /* common status codes */ VIRTIO_SND_S_OK = 0x8000, VIRTIO_SND_S_BAD_MSG, VIRTIO_SND_S_NOT_SUPP, VIRTIO_SND_S_IO_ERR }; /* common header */ struct virtio_snd_hdr { __le32 code; }; /* event notification */ struct virtio_snd_event { /* VIRTIO_SND_EVT_XXX */ struct virtio_snd_hdr hdr; /* optional event data */ __le32 data; }; /* common control request to query an item information */ struct virtio_snd_query_info { /* VIRTIO_SND_R_XXX_INFO */ struct virtio_snd_hdr hdr; /* item start identifier */ __le32 start_id; /* item count to query */ __le32 count; /* item information size in bytes */ __le32 size; }; /* common item information header */ struct virtio_snd_info { /* function group node id (High Definition Audio Specification 7.1.2) */ __le32 hda_fn_nid; }; /******************************************************************************* * JACK CONTROL MESSAGES */ struct virtio_snd_jack_hdr { /* VIRTIO_SND_R_JACK_XXX */ struct virtio_snd_hdr hdr; /* 0 ... virtio_snd_config::jacks - 1 */ __le32 jack_id; }; /* supported jack features */ enum { VIRTIO_SND_JACK_F_REMAP = 0 }; struct virtio_snd_jack_info { /* common header */ struct virtio_snd_info hdr; /* supported feature bit map (1 << VIRTIO_SND_JACK_F_XXX) */ __le32 features; /* pin configuration (High Definition Audio Specification 7.3.3.31) */ __le32 hda_reg_defconf; /* pin capabilities (High Definition Audio Specification 7.3.4.9) */ __le32 hda_reg_caps; /* current jack connection status (0: disconnected, 1: connected) */ __u8 connected; __u8 padding[7]; }; /* jack remapping control request */ struct virtio_snd_jack_remap { /* .code = VIRTIO_SND_R_JACK_REMAP */ struct virtio_snd_jack_hdr hdr; /* selected association number */ __le32 association; /* selected sequence number */ __le32 sequence; }; /******************************************************************************* * PCM CONTROL MESSAGES */ struct virtio_snd_pcm_hdr { /* VIRTIO_SND_R_PCM_XXX */ struct virtio_snd_hdr hdr; /* 0 ... virtio_snd_config::streams - 1 */ __le32 stream_id; }; /* supported PCM stream features */ enum { VIRTIO_SND_PCM_F_SHMEM_HOST = 0, VIRTIO_SND_PCM_F_SHMEM_GUEST, VIRTIO_SND_PCM_F_MSG_POLLING, VIRTIO_SND_PCM_F_EVT_SHMEM_PERIODS, VIRTIO_SND_PCM_F_EVT_XRUNS }; /* supported PCM sample formats */ enum { /* analog formats (width / physical width) */ VIRTIO_SND_PCM_FMT_IMA_ADPCM = 0, /* 4 / 4 bits */ VIRTIO_SND_PCM_FMT_MU_LAW, /* 8 / 8 bits */ VIRTIO_SND_PCM_FMT_A_LAW, /* 8 / 8 bits */ VIRTIO_SND_PCM_FMT_S8, /* 8 / 8 bits */ VIRTIO_SND_PCM_FMT_U8, /* 8 / 8 bits */ VIRTIO_SND_PCM_FMT_S16, /* 16 / 16 bits */ VIRTIO_SND_PCM_FMT_U16, /* 16 / 16 bits */ VIRTIO_SND_PCM_FMT_S18_3, /* 18 / 24 bits */ VIRTIO_SND_PCM_FMT_U18_3, /* 18 / 24 bits */ VIRTIO_SND_PCM_FMT_S20_3, /* 20 / 24 bits */ VIRTIO_SND_PCM_FMT_U20_3, /* 20 / 24 bits */ VIRTIO_SND_PCM_FMT_S24_3, /* 24 / 24 bits */ VIRTIO_SND_PCM_FMT_U24_3, /* 24 / 24 bits */ VIRTIO_SND_PCM_FMT_S20, /* 20 / 32 bits */ VIRTIO_SND_PCM_FMT_U20, /* 20 / 32 bits */ VIRTIO_SND_PCM_FMT_S24, /* 24 / 32 bits */ VIRTIO_SND_PCM_FMT_U24, /* 24 / 32 bits */ VIRTIO_SND_PCM_FMT_S32, /* 32 / 32 bits */ VIRTIO_SND_PCM_FMT_U32, /* 32 / 32 bits */ VIRTIO_SND_PCM_FMT_FLOAT, /* 32 / 32 bits */ VIRTIO_SND_PCM_FMT_FLOAT64, /* 64 / 64 bits */ /* digital formats (width / physical width) */ VIRTIO_SND_PCM_FMT_DSD_U8, /* 8 / 8 bits */ VIRTIO_SND_PCM_FMT_DSD_U16, /* 16 / 16 bits */ VIRTIO_SND_PCM_FMT_DSD_U32, /* 32 / 32 bits */ VIRTIO_SND_PCM_FMT_IEC958_SUBFRAME /* 32 / 32 bits */ }; /* supported PCM frame rates */ enum { VIRTIO_SND_PCM_RATE_5512 = 0, VIRTIO_SND_PCM_RATE_8000, VIRTIO_SND_PCM_RATE_11025, VIRTIO_SND_PCM_RATE_16000, VIRTIO_SND_PCM_RATE_22050, VIRTIO_SND_PCM_RATE_32000, VIRTIO_SND_PCM_RATE_44100, VIRTIO_SND_PCM_RATE_48000, VIRTIO_SND_PCM_RATE_64000, VIRTIO_SND_PCM_RATE_88200, VIRTIO_SND_PCM_RATE_96000, VIRTIO_SND_PCM_RATE_176400, VIRTIO_SND_PCM_RATE_192000, VIRTIO_SND_PCM_RATE_384000 }; struct virtio_snd_pcm_info { /* common header */ struct virtio_snd_info hdr; /* supported feature bit map (1 << VIRTIO_SND_PCM_F_XXX) */ __le32 features; /* supported sample format bit map (1 << VIRTIO_SND_PCM_FMT_XXX) */ __le64 formats; /* supported frame rate bit map (1 << VIRTIO_SND_PCM_RATE_XXX) */ __le64 rates; /* dataflow direction (VIRTIO_SND_D_XXX) */ __u8 direction; /* minimum # of supported channels */ __u8 channels_min; /* maximum # of supported channels */ __u8 channels_max; __u8 padding[5]; }; /* set PCM stream format */ struct virtio_snd_pcm_set_params { /* .code = VIRTIO_SND_R_PCM_SET_PARAMS */ struct virtio_snd_pcm_hdr hdr; /* size of the hardware buffer */ __le32 buffer_bytes; /* size of the hardware period */ __le32 period_bytes; /* selected feature bit map (1 << VIRTIO_SND_PCM_F_XXX) */ __le32 features; /* selected # of channels */ __u8 channels; /* selected sample format (VIRTIO_SND_PCM_FMT_XXX) */ __u8 format; /* selected frame rate (VIRTIO_SND_PCM_RATE_XXX) */ __u8 rate; __u8 padding; }; /******************************************************************************* * PCM I/O MESSAGES */ /* I/O request header */ struct virtio_snd_pcm_xfer { /* 0 ... virtio_snd_config::streams - 1 */ __le32 stream_id; }; /* I/O request status */ struct virtio_snd_pcm_status { /* VIRTIO_SND_S_XXX */ __le32 status; /* current device latency */ __le32 latency_bytes; }; /******************************************************************************* * CHANNEL MAP CONTROL MESSAGES */ struct virtio_snd_chmap_hdr { /* VIRTIO_SND_R_CHMAP_XXX */ struct virtio_snd_hdr hdr; /* 0 ... virtio_snd_config::chmaps - 1 */ __le32 chmap_id; }; /* standard channel position definition */ enum { VIRTIO_SND_CHMAP_NONE = 0, /* undefined */ VIRTIO_SND_CHMAP_NA, /* silent */ VIRTIO_SND_CHMAP_MONO, /* mono stream */ VIRTIO_SND_CHMAP_FL, /* front left */ VIRTIO_SND_CHMAP_FR, /* front right */ VIRTIO_SND_CHMAP_RL, /* rear left */ VIRTIO_SND_CHMAP_RR, /* rear right */ VIRTIO_SND_CHMAP_FC, /* front center */ VIRTIO_SND_CHMAP_LFE, /* low frequency (LFE) */ VIRTIO_SND_CHMAP_SL, /* side left */ VIRTIO_SND_CHMAP_SR, /* side right */ VIRTIO_SND_CHMAP_RC, /* rear center */ VIRTIO_SND_CHMAP_FLC, /* front left center */ VIRTIO_SND_CHMAP_FRC, /* front right center */ VIRTIO_SND_CHMAP_RLC, /* rear left center */ VIRTIO_SND_CHMAP_RRC, /* rear right center */ VIRTIO_SND_CHMAP_FLW, /* front left wide */ VIRTIO_SND_CHMAP_FRW, /* front right wide */ VIRTIO_SND_CHMAP_FLH, /* front left high */ VIRTIO_SND_CHMAP_FCH, /* front center high */ VIRTIO_SND_CHMAP_FRH, /* front right high */ VIRTIO_SND_CHMAP_TC, /* top center */ VIRTIO_SND_CHMAP_TFL, /* top front left */ VIRTIO_SND_CHMAP_TFR, /* top front right */ VIRTIO_SND_CHMAP_TFC, /* top front center */ VIRTIO_SND_CHMAP_TRL, /* top rear left */ VIRTIO_SND_CHMAP_TRR, /* top rear right */ VIRTIO_SND_CHMAP_TRC, /* top rear center */ VIRTIO_SND_CHMAP_TFLC, /* top front left center */ VIRTIO_SND_CHMAP_TFRC, /* top front right center */ VIRTIO_SND_CHMAP_TSL, /* top side left */ VIRTIO_SND_CHMAP_TSR, /* top side right */ VIRTIO_SND_CHMAP_LLFE, /* left LFE */ VIRTIO_SND_CHMAP_RLFE, /* right LFE */ VIRTIO_SND_CHMAP_BC, /* bottom center */ VIRTIO_SND_CHMAP_BLC, /* bottom left center */ VIRTIO_SND_CHMAP_BRC /* bottom right center */ }; /* maximum possible number of channels */ #define VIRTIO_SND_CHMAP_MAX_SIZE 18 struct virtio_snd_chmap_info { /* common header */ struct virtio_snd_info hdr; /* dataflow direction (VIRTIO_SND_D_XXX) */ __u8 direction; /* # of valid channel position values */ __u8 channels; /* channel position values (VIRTIO_SND_CHMAP_XXX) */ __u8 positions[VIRTIO_SND_CHMAP_MAX_SIZE]; }; /******************************************************************************* * CONTROL ELEMENTS MESSAGES */ struct virtio_snd_ctl_hdr { /* VIRTIO_SND_R_CTL_XXX */ struct virtio_snd_hdr hdr; /* 0 ... virtio_snd_config::controls - 1 */ __le32 control_id; }; /* supported roles for control elements */ enum { VIRTIO_SND_CTL_ROLE_UNDEFINED = 0, VIRTIO_SND_CTL_ROLE_VOLUME, VIRTIO_SND_CTL_ROLE_MUTE, VIRTIO_SND_CTL_ROLE_GAIN }; /* supported value types for control elements */ enum { VIRTIO_SND_CTL_TYPE_BOOLEAN = 0, VIRTIO_SND_CTL_TYPE_INTEGER, VIRTIO_SND_CTL_TYPE_INTEGER64, VIRTIO_SND_CTL_TYPE_ENUMERATED, VIRTIO_SND_CTL_TYPE_BYTES, VIRTIO_SND_CTL_TYPE_IEC958 }; /* supported access rights for control elements */ enum { VIRTIO_SND_CTL_ACCESS_READ = 0, VIRTIO_SND_CTL_ACCESS_WRITE, VIRTIO_SND_CTL_ACCESS_VOLATILE, VIRTIO_SND_CTL_ACCESS_INACTIVE, VIRTIO_SND_CTL_ACCESS_TLV_READ, VIRTIO_SND_CTL_ACCESS_TLV_WRITE, VIRTIO_SND_CTL_ACCESS_TLV_COMMAND }; struct virtio_snd_ctl_info { /* common header */ struct virtio_snd_info hdr; /* element role (VIRTIO_SND_CTL_ROLE_XXX) */ __le32 role; /* element value type (VIRTIO_SND_CTL_TYPE_XXX) */ __le32 type; /* element access right bit map (1 << VIRTIO_SND_CTL_ACCESS_XXX) */ __le32 access; /* # of members in the element value */ __le32 count; /* index for an element with a non-unique name */ __le32 index; /* name identifier string for the element */ __u8 name[44]; /* additional information about the element's value */ union { /* VIRTIO_SND_CTL_TYPE_INTEGER */ struct { /* minimum supported value */ __le32 min; /* maximum supported value */ __le32 max; /* fixed step size for value (0 = variable size) */ __le32 step; } integer; /* VIRTIO_SND_CTL_TYPE_INTEGER64 */ struct { /* minimum supported value */ __le64 min; /* maximum supported value */ __le64 max; /* fixed step size for value (0 = variable size) */ __le64 step; } integer64; /* VIRTIO_SND_CTL_TYPE_ENUMERATED */ struct { /* # of options supported for value */ __le32 items; } enumerated; } value; }; struct virtio_snd_ctl_enum_item { /* option name */ __u8 item[64]; }; struct virtio_snd_ctl_iec958 { /* AES/IEC958 channel status bits */ __u8 status[24]; /* AES/IEC958 subcode bits */ __u8 subcode[147]; /* nothing */ __u8 pad; /* AES/IEC958 subframe bits */ __u8 dig_subframe[4]; }; struct virtio_snd_ctl_value { union { /* VIRTIO_SND_CTL_TYPE_BOOLEAN|INTEGER value */ __le32 integer[128]; /* VIRTIO_SND_CTL_TYPE_INTEGER64 value */ __le64 integer64[64]; /* VIRTIO_SND_CTL_TYPE_ENUMERATED value (option indexes) */ __le32 enumerated[128]; /* VIRTIO_SND_CTL_TYPE_BYTES value */ __u8 bytes[512]; /* VIRTIO_SND_CTL_TYPE_IEC958 value */ struct virtio_snd_ctl_iec958 iec958; } value; }; /* supported event reason types */ enum { /* element's value has changed */ VIRTIO_SND_CTL_EVT_MASK_VALUE = 0, /* element's information has changed */ VIRTIO_SND_CTL_EVT_MASK_INFO, /* element's metadata has changed */ VIRTIO_SND_CTL_EVT_MASK_TLV }; struct virtio_snd_ctl_event { /* VIRTIO_SND_EVT_CTL_NOTIFY */ struct virtio_snd_hdr hdr; /* 0 ... virtio_snd_config::controls - 1 */ __le16 control_id; /* event reason bit map (1 << VIRTIO_SND_CTL_EVT_MASK_XXX) */ __le16 mask; }; #endif /* VIRTIO_SND_IF_H */
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