Re: [PATCH 2/7] uapi: virtio_snd: add the sound device header file

From: Michael S. Tsirkin
Date: Wed Jan 20 2021 - 03:39:47 EST

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In reply to: Michael S. Tsirkin: "Re: [PATCH 2/7] uapi: virtio_snd: add the sound device header file"
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On Wed, Jan 20, 2021 at 03:19:55AM -0500, Michael S. Tsirkin wrote:
> 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@xxxxxxxxxxxxxxx>
> > ---
> > 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@xxxxxxxxxxxxxxx>
> > +L: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
> > +S: Maintained
> > +F: include/uapi/linux/virtio_snd.h
> > +
> > VIRTUAL BOX GUEST DEVICE DRIVER
> > M: Hans de Goede <hdegoede@xxxxxxxxxx>
> > M: Arnd Bergmann <arnd@xxxxxxxx>
>
> You want sound/virtio here too, right?
> I'd just squash this with the next patch in series.

I meant just the MAINTAINERS part. Not a big deal, admittedly ...

>
> > 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
> >

Next message: Michael S. Tsirkin: "Re: [PATCH 5/7] ALSA: virtio: PCM substream operators"
Previous message: Anshuman Khandual: "Re: [PATCH V3 0/3] mm/memory_hotplug: Pre-validate the address range with platform"
In reply to: Michael S. Tsirkin: "Re: [PATCH 2/7] uapi: virtio_snd: add the sound device header file"
Next in thread: Michael S. Tsirkin: "Re: [PATCH 2/7] uapi: virtio_snd: add the sound device header file"
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