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Subject: Re: [PATCH 2/7] uapi: virtio_snd: add the sound device header file
On Wed, Jan 20, 2021 at 01:36:30AM +0100, Anton Yakovlev wrote:
> The file contains the definitions for the sound device from the OASIS
> virtio spec.
>
> Signed-off-by: Anton Yakovlev <anton.yakovlev@opensynergy.com>
> ---
> MAINTAINERS | 6 +
> include/uapi/linux/virtio_snd.h | 361 ++++++++++++++++++++++++++++++++
> 2 files changed, 367 insertions(+)
> create mode 100644 include/uapi/linux/virtio_snd.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 00836f6452f0..6dfd59eafe82 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -18936,6 +18936,12 @@ W: https://virtio-mem.gitlab.io/
> F: drivers/virtio/virtio_mem.c
> F: include/uapi/linux/virtio_mem.h
>
> +VIRTIO SOUND DRIVER
> +M: Anton Yakovlev <anton.yakovlev@opensynergy.com>
> +L: virtualization@lists.linux-foundation.org
> +S: Maintained
> +F: include/uapi/linux/virtio_snd.h
> +
> VIRTUAL BOX GUEST DEVICE DRIVER
> M: Hans de Goede <hdegoede@redhat.com>
> M: Arnd Bergmann <arnd@arndb.de>
You want sound/virtio here too, right?
I'd just squash this with the next patch in series.
> diff --git a/include/uapi/linux/virtio_snd.h b/include/uapi/linux/virtio_snd.h
> new file mode 100644
> index 000000000000..1ff6310e54d6
> --- /dev/null
> +++ b/include/uapi/linux/virtio_snd.h
> @@ -0,0 +1,361 @@
> +/* SPDX-License-Identifier: BSD-3-Clause */
> +/*
> + * Copyright (C) 2020 OpenSynergy GmbH
> + *
> + * This header is BSD licensed so anyone can use the definitions to
> + * implement compatible drivers/servers.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + * 3. Neither the name of OpenSynergy GmbH nor the names of its contributors
> + * may be used to endorse or promote products derived from this software
> + * without specific prior written permission.
> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
> + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IBM OR
> + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
> + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
> + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
> + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
> + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + */
> +#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 */
> --
> 2.30.0
>
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