| /* 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> |
| |
| /******************************************************************************* |
| * CONFIGURATION SPACE |
| */ |
| struct virtio_snd_config { |
| /* # of available physical jacks */ |
| __le32 jacks; |
| /* # of available PCM streams */ |
| __le32 streams; |
| /* # of available channel maps */ |
| __le32 chmaps; |
| }; |
| |
| 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, |
| |
| /* 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, |
| |
| /* 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]; |
| }; |
| |
| #endif /* VIRTIO_SND_IF_H */ |
