* [PATCH v2 1/3] Add virtio-sound device
2023-06-08 15:56 [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
@ 2023-06-08 15:56 ` Manos Pitsidianakis
2023-07-17 15:38 ` Alex Bennée
2023-06-08 15:56 ` [PATCH v2 2/3] Add virtio-sound-pci device Manos Pitsidianakis
` (2 subsequent siblings)
3 siblings, 1 reply; 8+ messages in thread
From: Manos Pitsidianakis @ 2023-06-08 15:56 UTC (permalink / raw)
To: qemu-devel; +Cc: Manos Pitsidianakis, Igor Skalkin, Anton Yakovlev
This patch adds an audio device implementing the recent virtio sound
spec (1.2).
PCM functionality is implemented, and jack[0], chmaps[1] messages are
at the moment left unimplemented.
PS2: This patch was based on a draft patch posted by OpenSynergy in 2019. [2]
[0]: https://www.kernel.org/doc/html/latest/sound/designs/jack-controls.html
[1]: https://www.kernel.org/doc/html/latest/sound/designs/channel-mapping-api.html
[2]: https://github.com/OpenSynergy/qemu/commit/5a2f350eec5d157b90d9c7b40a8e603f4da92471#diff-fa5c10be8476fb5385a280885d527b0b40dfc11ddcc74369fce085d8b5b17bbd
Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
---
MAINTAINERS | 6 +
hw/virtio/Kconfig | 5 +
hw/virtio/meson.build | 1 +
hw/virtio/trace-events | 21 +
hw/virtio/virtio-snd.c | 1121 ++++++++++++++++++++++++++++++++
include/hw/virtio/virtio-snd.h | 194 ++++++
6 files changed, 1348 insertions(+)
create mode 100644 hw/virtio/virtio-snd.c
create mode 100644 include/hw/virtio/virtio-snd.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 1c93ab0ee5..5d5475b1c1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2218,6 +2218,12 @@ F: hw/virtio/virtio-mem-pci.h
F: hw/virtio/virtio-mem-pci.c
F: include/hw/virtio/virtio-mem.h
+virtio-snd
+M: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
+S: Supported
+F: hw/virtio/virtio-snd*.c
+F: include/hw/virtio/virtio-snd.h
+
nvme
M: Keith Busch <kbusch@kernel.org>
M: Klaus Jensen <its@irrelevant.dk>
diff --git a/hw/virtio/Kconfig b/hw/virtio/Kconfig
index 89e9e426d8..fcc522ed21 100644
--- a/hw/virtio/Kconfig
+++ b/hw/virtio/Kconfig
@@ -17,6 +17,11 @@ config VIRTIO_PCI
depends on PCI
select VIRTIO
+config VIRTIO_SND
+ bool
+ default y
+ depends on VIRTIO
+
config VIRTIO_MMIO
bool
select VIRTIO
diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build
index bdec78bfc6..8cf49af618 100644
--- a/hw/virtio/meson.build
+++ b/hw/virtio/meson.build
@@ -68,5 +68,6 @@ softmmu_ss.add(when: 'CONFIG_VIRTIO', if_false: files('virtio-stub.c'))
softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('vhost-stub.c'))
softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('virtio-stub.c'))
softmmu_ss.add(files('virtio-hmp-cmds.c'))
+softmmu_ss.add(when: 'CONFIG_VIRTIO_SND', if_true: files('virtio-snd.c'))
specific_ss.add_all(when: 'CONFIG_VIRTIO', if_true: specific_virtio_ss)
diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index 8f8d05cf9b..b77d78abdc 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -151,3 +151,24 @@ virtio_pmem_flush_done(int type) "fsync return=%d"
virtio_gpio_start(void) "start"
virtio_gpio_stop(void) "stop"
virtio_gpio_set_status(uint8_t status) "0x%x"
+
+#virtio-snd.c
+virtio_snd_pcm_stream_flush(int stream) "flushing stream %d"
+virtio_snd_handle_ctrl(void *vdev, void *vq) "snd %p: handle ctrl event for queue %p"
+#virtio_snd_handle_jack_info(int jack) "VIRTIO_SND_JACK_INFO called for jack %d"
+#virtio_snd_handle_jack_remap(void) "VIRTIO_SND_PCM_JACK_REMAP called"
+virtio_snd_handle_pcm_info(int stream) "VIRTIO_SND_R_PCM_INFO called for stream %d"
+virtio_snd_handle_pcm_set_params(int stream) "VIRTIO_SND_PCM_SET_PARAMS called for stream %d"
+virtio_snd_handle_pcm_start_stop(const char *code, int stream) "%s called for stream %d"
+virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE called for stream %d"
+virtio_snd_handle_chmap_info(void) "VIRTIO_SND_CHMAP_INFO called"
+virtio_snd_handle_xfer(void) "tx/rx queue callback called"
+virtio_snd_handle_event(void) "event queue callback called"
+virtio_snd_realize(void *snd) "snd %p: realize"
+virtio_snd_unrealize(void *snd) "snd %p: unrealize"
+virtio_snd_get_features(void *vdev, uint64_t features) "snd %p: get_features 0x%"PRIx64
+virtio_snd_get_config(void *vdev, uint32_t jacks, uint32_t streams, uint32_t chmaps) "snd %p: get_config jacks=%d streams=%d chmaps=%d"
+virtio_snd_set_config(void *vdev, uint32_t jacks, uint32_t new_jacks, uint32_t streams, uint32_t new_streams, uint32_t chmaps, uint32_t new_chmaps) "snd %p: set_config jacks from %d->%d, streams from %d->%d, chmaps from %d->%d"
+virtio_snd_vm_state_running(void) "vm state running"
+virtio_snd_vm_state_stopped(void) "vm state stopped"
+virtio_snd_handle_code(int val, const char *code) "ctrl code msg val = %d == %s"
diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c
new file mode 100644
index 0000000000..e3b6c353ad
--- /dev/null
+++ b/hw/virtio/virtio-snd.c
@@ -0,0 +1,1121 @@
+/*
+ * VIRTIO Sound Device conforming to
+ *
+ * "Virtual I/O Device (VIRTIO) Version 1.2
+ * Committee Specification Draft 01
+ * 09 May 2022"
+ *
+ * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
+ * Copyright (C) 2019 OpenSynergy GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version. See the COPYING file in the
+ * top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/iov.h"
+#include "qemu/log.h"
+#include "include/qemu/lockable.h"
+#include "sysemu/runstate.h"
+#include "trace.h"
+#include "qapi/error.h"
+#include "hw/virtio/virtio-snd.h"
+
+#define VIRTIO_SOUND_VM_VERSION 1
+
+#define VIRTIO_SOUND_JACK_DEFAULT 0
+#define VIRTIO_SOUND_STREAM_DEFAULT 1
+#define VIRTIO_SOUND_CHMAP_DEFAULT 0
+
+#define VIRTIO_SOUND_HDA_FN_NID 0
+
+static const VMStateDescription vmstate_virtio_snd_device = {
+ .name = TYPE_VIRTIO_SND,
+ .version_id = VIRTIO_SOUND_VM_VERSION,
+ .minimum_version_id = VIRTIO_SOUND_VM_VERSION,
+};
+
+static const VMStateDescription vmstate_virtio_snd = {
+ .name = "virtio-sound",
+ .minimum_version_id = VIRTIO_SOUND_VM_VERSION,
+ .version_id = VIRTIO_SOUND_VM_VERSION,
+ .fields = (VMStateField[]) {
+ VMSTATE_VIRTIO_DEVICE,
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static Property virtio_snd_properties[] = {
+ DEFINE_AUDIO_PROPERTIES(VirtIOSound, card),
+ DEFINE_PROP_UINT32("jacks", VirtIOSound, snd_conf.jacks,
+ VIRTIO_SOUND_JACK_DEFAULT),
+ DEFINE_PROP_UINT32("streams", VirtIOSound, snd_conf.streams,
+ VIRTIO_SOUND_STREAM_DEFAULT),
+ DEFINE_PROP_UINT32("chmaps", VirtIOSound, snd_conf.chmaps,
+ VIRTIO_SOUND_CHMAP_DEFAULT),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void
+virtio_snd_get_config(VirtIODevice *vdev, uint8_t *config)
+{
+ VirtIOSound *s = VIRTIO_SND(vdev);
+ trace_virtio_snd_get_config(vdev,
+ s->snd_conf.jacks,
+ s->snd_conf.streams,
+ s->snd_conf.chmaps);
+
+ memcpy(config, &s->snd_conf, sizeof(s->snd_conf));
+}
+
+static void
+virtio_snd_set_config(VirtIODevice *vdev, const uint8_t *config)
+{
+ VirtIOSound *s = VIRTIO_SND(vdev);
+ const virtio_snd_config *sndconfig =
+ (const virtio_snd_config *)config;
+
+
+ trace_virtio_snd_set_config(vdev,
+ s->snd_conf.jacks,
+ sndconfig->jacks,
+ s->snd_conf.streams,
+ sndconfig->streams,
+ s->snd_conf.chmaps,
+ sndconfig->chmaps);
+
+ memcpy(&s->snd_conf, sndconfig, sizeof(s->snd_conf));
+}
+
+static void virtio_snd_process_cmdq(VirtIOSound *s);
+static void virtio_snd_pcm_flush(VirtIOSoundPCMStream *stream);
+static void virtio_snd_pcm_out_cb(void *data, int available);
+static uint32_t virtio_snd_pcm_read_write(VirtIOSoundPCMStream *stream,
+ VirtQueue *vq,
+ VirtQueueElement *element,
+ bool read);
+
+/*
+ * Get a specific stream from the virtio sound card device.
+ * Returns NULL if @stream_id is invalid or not allocated.
+ *
+ * @s: VirtIOSound device
+ * @stream_id: stream id
+ */
+static VirtIOSoundPCMStream *virtio_snd_pcm_get_stream(VirtIOSound *s,
+ uint32_t stream_id)
+{
+ if (stream_id >= s->snd_conf.streams) {
+ return NULL;
+ }
+ return s->pcm->streams[stream_id];
+}
+
+/*
+ * Get params for a specific stream.
+ *
+ * @s: VirtIOSound device
+ * @stream_id: stream id
+ */
+static VirtIOSoundPCMParams *virtio_snd_pcm_get_params(VirtIOSound *s,
+ uint32_t stream_id)
+{
+ if (stream_id >= s->snd_conf.streams) {
+ return NULL;
+ }
+ return s->pcm->pcm_params[stream_id];
+}
+
+/*
+ * Handle the VIRTIO_SND_R_PCM_INFO request.
+ * The function writes the info structs to the request element.
+ *
+ * @s: VirtIOSound device
+ * @cmd: The request command queue element from VirtIOSound cmdq field
+ */
+static void virtio_snd_handle_pcm_info(VirtIOSound *s,
+ virtio_snd_ctrl_command *cmd)
+{
+ virtio_snd_query_info req;
+ uint32_t sz;
+ VirtIOSoundPCMStream *stream = NULL;
+ g_autofree virtio_snd_pcm_info *pcm_info = NULL;
+
+ sz = iov_to_buf(cmd->elem->out_sg,
+ cmd->elem->out_num,
+ 0,
+ &req,
+ sizeof(req));
+ assert(sz == sizeof(virtio_snd_query_info));
+
+ if (iov_size(cmd->elem->in_sg, cmd->elem->in_num) <
+ sizeof(virtio_snd_hdr) + req.size * req.count) {
+ error_report("pcm info: buffer too small, got: %lu, needed: %lu",
+ iov_size(cmd->elem->in_sg, cmd->elem->in_num),
+ sizeof(virtio_snd_pcm_info));
+ cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
+ return;
+ }
+
+ pcm_info = g_new0(virtio_snd_pcm_info, req.count);
+ for (int i = req.start_id; i < req.start_id + req.count; i++) {
+ trace_virtio_snd_handle_pcm_info(i);
+ stream = virtio_snd_pcm_get_stream(s, i);
+
+ if (!stream) {
+ error_report("Invalid stream id: %d", i);
+ cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
+ return;
+ }
+
+ pcm_info[i - req.start_id].hdr.hda_fn_nid = stream->info.hdr.hda_fn_nid;
+ pcm_info[i - req.start_id].features = stream->features;
+ pcm_info[i - req.start_id].formats = stream->formats;
+ pcm_info[i - req.start_id].rates = stream->rates;
+ pcm_info[i - req.start_id].direction = stream->direction;
+ pcm_info[i - req.start_id].channels_min = stream->channels_min;
+ pcm_info[i - req.start_id].channels_max = stream->channels_max;
+
+ memset(&pcm_info[i].padding, 0, sizeof(pcm_info[i].padding));
+ }
+
+ cmd->resp.code = VIRTIO_SND_S_OK;
+
+ sz = iov_from_buf(cmd->elem->in_sg,
+ cmd->elem->in_num,
+ sizeof(virtio_snd_hdr),
+ pcm_info,
+ sizeof(virtio_snd_pcm_info) * req.count);
+ assert(sz == req.size * req.count);
+
+ return;
+}
+
+/*
+ * Set the given stream params.
+ * Called by both virtio_snd_handle_pcm_set_params and during device
+ * initialization.
+ * Returns the response status code. (VIRTIO_SND_S_*).
+ *
+ * @s: VirtIOSound device
+ * @params: The PCM params as defined in the virtio specification
+ */
+static
+uint32_t virtio_snd_pcm_set_params_impl(VirtIOSound *s,
+ virtio_snd_pcm_set_params *params)
+{
+ uint32_t supported_formats, supported_rates;
+ VirtIOSoundPCMParams *st_params;
+ uint32_t stream_id = params->hdr.stream_id;
+
+ if (stream_id > s->snd_conf.streams || !(s->pcm->pcm_params)) {
+ virtio_error(VIRTIO_DEVICE(s), "Streams have not been initialized.\n");
+ return VIRTIO_SND_S_BAD_MSG;
+ }
+
+ if (!s->pcm->pcm_params[stream_id]) {
+ s->pcm->pcm_params[stream_id] = g_new0(VirtIOSoundPCMParams, 1);
+ }
+ st_params = virtio_snd_pcm_get_params(s, stream_id);
+
+ st_params->features = params->features;
+ st_params->buffer_bytes = params->buffer_bytes;
+ st_params->period_bytes = params->period_bytes;
+
+ if (params->channels < 1 || params->channels > AUDIO_MAX_CHANNELS) {
+ error_report("Number of channels is not supported.");
+ return VIRTIO_SND_S_NOT_SUPP;
+ }
+ st_params->channels = params->channels;
+
+ supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
+ | 1 << VIRTIO_SND_PCM_FMT_U8
+ | 1 << VIRTIO_SND_PCM_FMT_S16
+ | 1 << VIRTIO_SND_PCM_FMT_U16
+ | 1 << VIRTIO_SND_PCM_FMT_S32
+ | 1 << VIRTIO_SND_PCM_FMT_U32
+ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
+
+ supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
+ | 1 << VIRTIO_SND_PCM_RATE_8000
+ | 1 << VIRTIO_SND_PCM_RATE_11025
+ | 1 << VIRTIO_SND_PCM_RATE_16000
+ | 1 << VIRTIO_SND_PCM_RATE_22050
+ | 1 << VIRTIO_SND_PCM_RATE_32000
+ | 1 << VIRTIO_SND_PCM_RATE_44100
+ | 1 << VIRTIO_SND_PCM_RATE_48000
+ | 1 << VIRTIO_SND_PCM_RATE_64000
+ | 1 << VIRTIO_SND_PCM_RATE_88200
+ | 1 << VIRTIO_SND_PCM_RATE_96000
+ | 1 << VIRTIO_SND_PCM_RATE_176400
+ | 1 << VIRTIO_SND_PCM_RATE_192000
+ | 1 << VIRTIO_SND_PCM_RATE_384000;
+
+ if (!(supported_formats & (1 << params->format))) {
+ error_report("Stream format is not supported.");
+ return VIRTIO_SND_S_NOT_SUPP;
+ }
+ st_params->format = params->format;
+
+ if (!(supported_rates & (1 << params->rate))) {
+ error_report("Stream rate is not supported.");
+ return VIRTIO_SND_S_NOT_SUPP;
+ }
+ st_params->rate = params->rate;
+ st_params->period_bytes = params->period_bytes;
+ st_params->buffer_bytes = params->buffer_bytes;
+
+ return VIRTIO_SND_S_OK;
+}
+
+/*
+ * Handles the VIRTIO_SND_R_PCM_SET_PARAMS request.
+ *
+ * @s: VirtIOSound device
+ * @cmd: The request command queue element from VirtIOSound cmdq field
+ */
+static void virtio_snd_handle_pcm_set_params(VirtIOSound *s,
+ virtio_snd_ctrl_command *cmd)
+{
+ virtio_snd_pcm_set_params req;
+ uint32_t sz;
+
+ sz = iov_to_buf(cmd->elem->out_sg,
+ cmd->elem->out_num,
+ 0,
+ &req,
+ sizeof(req));
+ assert(sz == sizeof(virtio_snd_pcm_set_params));
+
+ trace_virtio_snd_handle_pcm_set_params(req.hdr.stream_id);
+ cmd->resp.code = virtio_snd_pcm_set_params_impl(s, &req);
+
+ return;
+}
+
+/*
+ * Get a QEMU Audiosystem compatible format value from a VIRTIO_SND_PCM_FMT_*
+ */
+static AudioFormat virtio_snd_get_qemu_format(uint32_t format)
+{
+ switch (format) {
+ case VIRTIO_SND_PCM_FMT_U8:
+ return AUDIO_FORMAT_U8;
+ case VIRTIO_SND_PCM_FMT_S8:
+ return AUDIO_FORMAT_S8;
+ case VIRTIO_SND_PCM_FMT_U16:
+ return AUDIO_FORMAT_U16;
+ case VIRTIO_SND_PCM_FMT_S16:
+ return AUDIO_FORMAT_S16;
+ case VIRTIO_SND_PCM_FMT_U32:
+ return AUDIO_FORMAT_U32;
+ case VIRTIO_SND_PCM_FMT_S32:
+ return AUDIO_FORMAT_S32;
+ case VIRTIO_SND_PCM_FMT_FLOAT:
+ return AUDIO_FORMAT_F32;
+ default:
+ return -1;
+ }
+}
+
+/*
+ * Get a QEMU Audiosystem compatible frequency value from a
+ * VIRTIO_SND_PCM_RATE_*
+ */
+static uint32_t virtio_snd_get_qemu_freq(uint32_t rate)
+{
+ switch (rate) {
+ case VIRTIO_SND_PCM_RATE_5512:
+ return 5512;
+ case VIRTIO_SND_PCM_RATE_8000:
+ return 8000;
+ case VIRTIO_SND_PCM_RATE_11025:
+ return 11025;
+ case VIRTIO_SND_PCM_RATE_16000:
+ return 16000;
+ case VIRTIO_SND_PCM_RATE_22050:
+ return 22050;
+ case VIRTIO_SND_PCM_RATE_32000:
+ return 32000;
+ case VIRTIO_SND_PCM_RATE_44100:
+ return 44100;
+ case VIRTIO_SND_PCM_RATE_48000:
+ return 48000;
+ case VIRTIO_SND_PCM_RATE_64000:
+ return 64000;
+ case VIRTIO_SND_PCM_RATE_88200:
+ return 88200;
+ case VIRTIO_SND_PCM_RATE_96000:
+ return 96000;
+ case VIRTIO_SND_PCM_RATE_176400:
+ return 176400;
+ case VIRTIO_SND_PCM_RATE_192000:
+ return 192000;
+ case VIRTIO_SND_PCM_RATE_384000:
+ return 384000;
+ default:
+ return -1;
+ }
+}
+
+/*
+ * Get QEMU Audiosystem compatible audsettings from virtio based pcm stream
+ * params.
+ */
+static void virtio_snd_get_qemu_audsettings(audsettings *as,
+ VirtIOSoundPCMParams *params)
+{
+ as->nchannels = MIN(AUDIO_MAX_CHANNELS, params->channels);
+ as->fmt = virtio_snd_get_qemu_format(params->format);
+ as->freq = virtio_snd_get_qemu_freq(params->rate);
+ as->endianness = AUDIO_HOST_ENDIANNESS;
+}
+
+/*
+ * Prepares a VirtIOSound card stream.
+ * Returns the response status code. (VIRTIO_SND_S_*).
+ *
+ * @s: VirtIOSound device
+ * @stream_id: stream id
+ */
+static uint32_t virtio_snd_pcm_prepare_impl(VirtIOSound *s, uint32_t stream_id)
+{
+ audsettings as;
+ uint32_t supported_formats, supported_rates;
+ VirtIOSoundPCMParams *params;
+ VirtIOSoundPCMStream *stream;
+
+ if (!s->pcm->streams
+ || !s->pcm->pcm_params
+ || !s->pcm->pcm_params[stream_id]) {
+ return VIRTIO_SND_S_BAD_MSG;
+ }
+
+ supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
+ | 1 << VIRTIO_SND_PCM_FMT_U8
+ | 1 << VIRTIO_SND_PCM_FMT_S16
+ | 1 << VIRTIO_SND_PCM_FMT_U16
+ | 1 << VIRTIO_SND_PCM_FMT_S32
+ | 1 << VIRTIO_SND_PCM_FMT_U32
+ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
+
+ supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
+ | 1 << VIRTIO_SND_PCM_RATE_8000
+ | 1 << VIRTIO_SND_PCM_RATE_11025
+ | 1 << VIRTIO_SND_PCM_RATE_16000
+ | 1 << VIRTIO_SND_PCM_RATE_22050
+ | 1 << VIRTIO_SND_PCM_RATE_32000
+ | 1 << VIRTIO_SND_PCM_RATE_44100
+ | 1 << VIRTIO_SND_PCM_RATE_48000
+ | 1 << VIRTIO_SND_PCM_RATE_64000
+ | 1 << VIRTIO_SND_PCM_RATE_88200
+ | 1 << VIRTIO_SND_PCM_RATE_96000
+ | 1 << VIRTIO_SND_PCM_RATE_176400
+ | 1 << VIRTIO_SND_PCM_RATE_192000
+ | 1 << VIRTIO_SND_PCM_RATE_384000;
+
+ params = virtio_snd_pcm_get_params(s, stream_id);
+ assert(params);
+
+ virtio_snd_get_qemu_audsettings(&as, params);
+
+ stream = g_new0(VirtIOSoundPCMStream, 1);
+
+ stream->id = stream_id;
+ stream->pcm = s->pcm;
+ stream->direction = stream_id < s->snd_conf.streams / 2 +
+ (s->snd_conf.streams & 1) ? VIRTIO_SND_D_OUTPUT : VIRTIO_SND_D_INPUT;
+ stream->info.hdr.hda_fn_nid = VIRTIO_SOUND_HDA_FN_NID;
+ stream->features = 0;
+ stream->channels_min = 1;
+ stream->channels_max = as.nchannels;
+ stream->formats = supported_formats;
+ stream->rates = supported_rates;
+ stream->s = s;
+
+ stream->buffer_bytes = params->buffer_bytes;
+ stream->period_bytes = params->period_bytes;
+
+ stream->positions[0] = VIRTIO_SND_CHMAP_FL;
+ stream->positions[1] = VIRTIO_SND_CHMAP_FR;
+
+
+ if (stream->direction == VIRTIO_SND_D_OUTPUT) {
+ stream->voice.out = AUD_open_out(&s->card,
+ stream->voice.out,
+ "virtio_snd_card",
+ stream,
+ virtio_snd_pcm_out_cb,
+ &as);
+
+ } else {
+ qemu_log_mask(LOG_UNIMP, "virtio_snd: input/capture is unimplemented.");
+ /*
+ * stream->voice.in = AUD_open_in(&s->card,
+ * stream->voice.in,
+ * "virtio_snd_card",
+ * stream,
+ * virtio_snd_input_cb,
+ * &as);
+ */
+ }
+
+ stream->as = as;
+ stream->desired_as = stream->as;
+ qemu_mutex_init(&stream->queue_mutex);
+ QSIMPLEQ_INIT(&stream->queue);
+
+ s->pcm->streams[stream_id] = stream;
+
+ return VIRTIO_SND_S_OK;
+}
+
+/*
+ * Handles VIRTIO_SND_R_PCM_PREPARE.
+ *
+ * @s: VirtIOSound device
+ * @cmd: The request command queue element from VirtIOSound cmdq field
+ */
+static void virtio_snd_handle_pcm_prepare(VirtIOSound *s,
+ virtio_snd_ctrl_command *cmd)
+{
+ uint32_t stream_id;
+ size_t sz;
+
+ sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num,
+ sizeof(virtio_snd_hdr), &stream_id, sizeof(stream_id));
+ assert(sz == sizeof(uint32_t));
+
+ cmd->resp.code = virtio_snd_pcm_prepare_impl(s, stream_id);
+ return;
+}
+
+/*
+ * Handles VIRTIO_SND_R_PCM_START.
+ *
+ * @s: VirtIOSound device
+ * @cmd: The request command queue element from VirtIOSound cmdq field
+ * @start: whether to start or stop the device
+ */
+static void virtio_snd_handle_pcm_start_stop(VirtIOSound *s,
+ virtio_snd_ctrl_command *cmd,
+ bool start)
+{
+ VirtIOSoundPCMStream *stream;
+ virtio_snd_pcm_hdr req;
+ size_t sz;
+
+ sz = iov_to_buf(cmd->elem->out_sg,
+ cmd->elem->out_num,
+ 0,
+ &req,
+ sizeof(req));
+ assert(sz == sizeof(virtio_snd_pcm_hdr));
+
+ cmd->resp.code = VIRTIO_SND_S_OK;
+ trace_virtio_snd_handle_pcm_start_stop(start ? "VIRTIO_SND_R_PCM_START" :
+ "VIRTIO_SND_R_PCM_STOP", req.stream_id);
+
+ stream = virtio_snd_pcm_get_stream(s, req.stream_id);
+
+ if (stream) {
+ if (stream->direction == VIRTIO_SND_D_OUTPUT) {
+ AUD_set_active_out(stream->voice.out, start);
+ }
+ } else {
+ cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
+ }
+ return;
+}
+
+/*
+ * Returns the number of bytes that have not been passed to AUD_write yet.
+ *
+ * @stream: VirtIOSoundPCMStream
+ */
+static int virtio_snd_pcm_get_pending_bytes(VirtIOSoundPCMStream *stream)
+{
+ VirtIOSoundPCMBlock *block;
+ VirtIOSoundPCMBlock *next;
+ int size = 0;
+
+ WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
+ QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
+ size += block->size;
+ }
+ }
+ return size;
+}
+
+/*
+ * Releases the buffer resources allocated to a stream. Seperated from the
+ * handler so that the code can be reused in the unrealize function. Returns
+ * the response status code. (VIRTIO_SND_S_*).
+ *
+ * @stream: VirtIOSoundPCMStream stream
+ * @stream_id: stream id
+ */
+static uint32_t virtio_snd_pcm_release_impl(VirtIOSoundPCMStream *stream,
+ uint32_t stream_id)
+{
+ assert(stream->s->pcm->streams[stream_id] == stream);
+
+ if (virtio_snd_pcm_get_pending_bytes(stream)) {
+ /*
+ * virtio-v1.2-csd01, 5.14.6.6.5.1,
+ * Device Requirements: Stream Release
+ *
+ * - The device MUST complete all pending I/O messages for the
+ * specified stream ID.
+ * - The device MUST NOT complete the control request while there
+ * are pending I/O messages for the specified stream ID.
+ */
+ virtio_snd_process_cmdq(stream->s);
+ trace_virtio_snd_pcm_stream_flush(stream_id);
+ virtio_snd_pcm_flush(stream);
+ }
+
+ return VIRTIO_SND_S_OK;
+}
+
+/*
+ * Handles VIRTIO_SND_R_PCM_RELEASE.
+ *
+ * @s: VirtIOSound device
+ * @cmd: The request command queue element from VirtIOSound cmdq field
+ */
+static void virtio_snd_handle_pcm_release(VirtIOSound *s,
+ virtio_snd_ctrl_command *cmd)
+{
+ uint32_t stream_id;
+ size_t sz;
+ VirtIOSoundPCMStream *stream;
+
+ sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num,
+ sizeof(virtio_snd_hdr), &stream_id, sizeof(stream_id));
+ assert(sz == sizeof(uint32_t));
+
+ trace_virtio_snd_handle_pcm_release(stream_id);
+
+ stream = virtio_snd_pcm_get_stream(s, stream_id);
+ if (!stream) {
+ error_report("already released stream %d", stream_id);
+ virtio_error(VIRTIO_DEVICE(s), "already released stream %d", stream_id);
+ cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
+ return;
+ }
+ cmd->resp.code = virtio_snd_pcm_release_impl(stream, stream_id);
+ return;
+}
+
+/*
+ * The actual processing done in virtio_snd_process_cmdq().
+ *
+ * @s: VirtIOSound device
+ * @cmd: control command request
+ */
+static inline void
+process_cmd(VirtIOSound *s, virtio_snd_ctrl_command *cmd)
+{
+ VIRTIO_SND_FILL_CMD(cmd->ctrl);
+ size_t sz;
+
+ trace_virtio_snd_handle_code(cmd->ctrl.code,
+ print_code(cmd->ctrl.code));
+
+ switch (cmd->ctrl.code) {
+ case VIRTIO_SND_R_JACK_INFO:
+ case VIRTIO_SND_R_JACK_REMAP:
+ qemu_log_mask(LOG_UNIMP,
+ "virtio_snd: jack functionality is unimplemented.");
+ break;
+ case VIRTIO_SND_R_PCM_INFO:
+ virtio_snd_handle_pcm_info(s, cmd);
+ break;
+ case VIRTIO_SND_R_PCM_SET_PARAMS:
+ virtio_snd_handle_pcm_set_params(s, cmd);
+ break;
+ case VIRTIO_SND_R_PCM_PREPARE:
+ virtio_snd_handle_pcm_prepare(s, cmd);
+ break;
+ case VIRTIO_SND_R_PCM_START:
+ virtio_snd_handle_pcm_start_stop(s, cmd, true);
+ break;
+ case VIRTIO_SND_R_PCM_STOP:
+ virtio_snd_handle_pcm_start_stop(s, cmd, false);
+ break;
+ case VIRTIO_SND_R_PCM_RELEASE:
+ virtio_snd_handle_pcm_release(s, cmd);
+ break;
+ case VIRTIO_SND_R_CHMAP_INFO:
+ qemu_log_mask(LOG_UNIMP,
+ "virtio_snd: chmap info functionality is unimplemented.");
+ trace_virtio_snd_handle_chmap_info();
+ break;
+ default:
+ /* error */
+ error_report("virtio snd header not recognized: %d", cmd->ctrl.code);
+ cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
+ }
+
+ sz = iov_from_buf(cmd->elem->in_sg,
+ cmd->elem->in_num,
+ 0,
+ &cmd->resp,
+ sizeof(cmd->resp));
+ assert(sz == sizeof(cmd->resp));
+ virtqueue_push(cmd->vq, cmd->elem, sizeof(cmd->elem));
+ virtio_notify(VIRTIO_DEVICE(s), cmd->vq);
+ cmd->finished = true;
+}
+
+/*
+ * Consume all elements in command queue.
+ *
+ * @s: VirtIOSound device
+ */
+static void virtio_snd_process_cmdq(VirtIOSound *s)
+{
+ virtio_snd_ctrl_command *cmd;
+
+ if (unlikely(qatomic_read(&s->processing_cmdq))) {
+ return;
+ }
+
+ WITH_QEMU_LOCK_GUARD(&s->cmdq_mutex) {
+ qatomic_set(&s->processing_cmdq, true);
+ while (!QTAILQ_EMPTY(&s->cmdq)) {
+ cmd = QTAILQ_FIRST(&s->cmdq);
+
+ /* process command */
+ process_cmd(s, cmd);
+
+ QTAILQ_REMOVE(&s->cmdq, cmd, next);
+
+ assert(cmd->finished);
+ g_free(cmd);
+ }
+ qatomic_set(&s->processing_cmdq, false);
+ }
+}
+
+/*
+ * The control message handler. Pops an element from the control virtqueue,
+ * and stores them to VirtIOSound's cmdq queue and finally calls
+ * virtio_snd_process_cmdq() for processing.
+ *
+ * @vdev: VirtIOSound device
+ * @vq: Control virtqueue
+ */
+static void virtio_snd_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
+{
+ VirtIOSound *s = VIRTIO_SND(vdev);
+ VirtQueueElement *elem;
+ virtio_snd_ctrl_command *cmd;
+
+ trace_virtio_snd_handle_ctrl(vdev, vq);
+
+ if (!virtio_queue_ready(vq)) {
+ return;
+ }
+
+ elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
+ while (elem) {
+ cmd = g_new0(virtio_snd_ctrl_command, 1);
+ cmd->elem = elem;
+ cmd->vq = vq;
+ cmd->finished = false;
+ cmd->resp.code = VIRTIO_SND_S_OK;
+ QTAILQ_INSERT_TAIL(&s->cmdq, cmd, next);
+ elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
+ }
+
+ virtio_snd_process_cmdq(s);
+}
+
+/*
+ * The event virtqueue handler.
+ * Not implemented yet.
+ *
+ * @vdev: VirtIOSound device
+ * @vq: event vq
+ */
+static void virtio_snd_handle_event(VirtIODevice *vdev, VirtQueue *vq)
+{
+ qemu_log_mask(LOG_UNIMP, "virtio_snd: event queue is unimplemented.");
+ trace_virtio_snd_handle_event();
+}
+
+/*
+ * The tx virtqueue handler. Makes the buffers available to their respective
+ * streams for consumption.
+ *
+ * @vdev: VirtIOSound device
+ * @vq: tx virtqueue
+ */
+static void virtio_snd_handle_xfer(VirtIODevice *vdev, VirtQueue *vq)
+{
+ VirtIOSound *s = VIRTIO_SND(vdev);
+ VirtIOSoundPCMStream *stream = NULL;
+ VirtQueueElement *elem;
+ size_t sz;
+ virtio_snd_pcm_xfer hdr;
+ virtio_snd_pcm_status resp = { 0 };
+
+ trace_virtio_snd_handle_xfer();
+
+ for (;;) {
+ elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
+ if (!elem) {
+ break;
+ }
+ /* get the message hdr object */
+ sz = iov_to_buf(elem->out_sg,
+ elem->out_num,
+ 0,
+ &hdr,
+ sizeof(hdr));
+ assert(sz == sizeof(hdr));
+ stream = s->pcm->streams[hdr.stream_id];
+ assert(stream);
+
+ WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
+ virtio_snd_pcm_read_write(stream,
+ vq,
+ elem,
+ hdr.stream_id == VIRTIO_SND_D_INPUT);
+
+ resp.status = VIRTIO_SND_S_OK;
+ sz = iov_from_buf(elem->in_sg,
+ elem->in_num,
+ 0,
+ &resp,
+ sizeof(resp));
+ assert(sz == sizeof(virtio_snd_pcm_status));
+ }
+ }
+
+ /*
+ * Notify vq about virtio_snd_pcm_status responses.
+ * Buffer responses must be notified separately later.
+ */
+ virtio_notify(VIRTIO_DEVICE(s), vq);
+}
+
+static uint64_t get_features(VirtIODevice *vdev, uint64_t features,
+ Error **errp)
+{
+ /*
+ * virtio-v1.2-csd01, 5.14.3,
+ * Feature Bits
+ * None currently defined.
+ */
+ trace_virtio_snd_get_features(vdev, features);
+ return features | 1UL << VIRTIO_F_VERSION_1 | 1UL << VIRTIO_F_IN_ORDER;
+}
+
+static void virtio_snd_set_pcm(VirtIOSound *snd)
+{
+ VirtIOSoundPCM *pcm;
+
+ pcm = g_new0(VirtIOSoundPCM, 1);
+ pcm->snd = snd;
+
+ pcm->streams = g_new0(VirtIOSoundPCMStream *, snd->snd_conf.streams);
+ pcm->pcm_params = g_new0(VirtIOSoundPCMParams *, snd->snd_conf.streams);
+ pcm->jacks = g_new0(struct virtio_snd_jack *, snd->snd_conf.jacks);
+
+ snd->pcm = pcm;
+
+ return;
+}
+
+void virtio_snd_common_realize(DeviceState *dev,
+ VirtIOHandleOutput ctrl,
+ VirtIOHandleOutput evt,
+ VirtIOHandleOutput txq,
+ VirtIOHandleOutput rxq,
+ Error **errp)
+{
+ VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+ VirtIOSound *vsnd = VIRTIO_SND(dev);
+ virtio_snd_pcm_set_params default_params;
+ uint32_t status;
+
+ virtio_snd_set_pcm(vsnd);
+
+ virtio_init(vdev, VIRTIO_ID_SOUND, sizeof(virtio_snd_config));
+
+ /* set number of jacks and streams */
+ if (vsnd->snd_conf.jacks > 8) {
+ error_setg(errp,
+ "Invalid number of jacks: %d",
+ vsnd->snd_conf.jacks);
+ return;
+ }
+ if (vsnd->snd_conf.streams < 1 || vsnd->snd_conf.streams > 10) {
+ error_setg(errp,
+ "Invalid number of streams: %d",
+ vsnd->snd_conf.streams);
+ return;
+ }
+
+ if (vsnd->snd_conf.chmaps > VIRTIO_SND_CHMAP_MAX_SIZE) {
+ error_setg(errp,
+ "Invalid number of channel maps: %d",
+ vsnd->snd_conf.chmaps);
+ return;
+ }
+
+ AUD_register_card("virtio-sound", &vsnd->card);
+
+ /* set default params for all streams */
+ default_params.features = 0;
+ default_params.buffer_bytes = 8192;
+ default_params.period_bytes = 4096;
+ default_params.channels = 2;
+ default_params.format = VIRTIO_SND_PCM_FMT_S16;
+ default_params.rate = VIRTIO_SND_PCM_RATE_44100;
+
+ vsnd->queues[VIRTIO_SND_VQ_CONTROL] = virtio_add_queue(vdev, 64, ctrl);
+ vsnd->queues[VIRTIO_SND_VQ_EVENT] = virtio_add_queue(vdev, 64, evt);
+ vsnd->queues[VIRTIO_SND_VQ_TX] = virtio_add_queue(vdev, 64, txq);
+ vsnd->queues[VIRTIO_SND_VQ_RX] = virtio_add_queue(vdev, 64, rxq);
+ qemu_mutex_init(&vsnd->cmdq_mutex);
+ QTAILQ_INIT(&vsnd->cmdq);
+
+ for (int i = 0; i < vsnd->snd_conf.streams; i++) {
+ default_params.hdr.stream_id = i;
+ status = virtio_snd_pcm_set_params_impl(vsnd, &default_params);
+ if (status != VIRTIO_SND_S_OK) {
+ error_setg(errp,
+ "Can't initalize stream params, device responded with %s.",
+ print_code(status));
+ return;
+ }
+ status = virtio_snd_pcm_prepare_impl(vsnd, i);
+ if (status != VIRTIO_SND_S_OK) {
+ error_setg(errp,
+ "Can't prepare streams, device responded with %s.",
+ print_code(status));
+ return;
+ }
+ }
+}
+
+static void
+virtio_snd_vm_state_change(void *opaque, bool running, RunState state)
+{
+ if (running) {
+ trace_virtio_snd_vm_state_running();
+ } else {
+ trace_virtio_snd_vm_state_stopped();
+ }
+}
+
+static void virtio_snd_realize(DeviceState *dev, Error **errp)
+{
+ VirtIOSound *vsnd = VIRTIO_SND(dev);
+ Error *err = NULL;
+
+ vsnd->pcm = NULL;
+ vsnd->vmstate =
+ qemu_add_vm_change_state_handler(virtio_snd_vm_state_change, vsnd);
+
+ trace_virtio_snd_realize(vsnd);
+
+ virtio_snd_common_realize(dev,
+ virtio_snd_handle_ctrl,
+ virtio_snd_handle_event,
+ virtio_snd_handle_xfer,
+ virtio_snd_handle_xfer,
+ &err);
+ if (err != NULL) {
+ error_propagate(errp, err);
+ return;
+ }
+}
+
+/*
+ * AUD_* output callback.
+ *
+ * @data: VirtIOSoundPCMStream stream
+ * @available: number of bytes that can be written with AUD_write()
+ */
+static void virtio_snd_pcm_out_cb(void *data, int available)
+{
+ VirtIOSoundPCMStream *stream = data;
+ VirtIOSoundPCMBlock *block;
+ VirtIOSoundPCMBlock *next;
+ int size;
+
+ WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
+ QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
+ for (;;) {
+ size = MIN(block->size, available);
+ size = AUD_write(stream->voice.out,
+ block->data + block->offset,
+ size);
+ block->size -= size;
+ block->offset += size;
+ if (!block->size) {
+ virtqueue_push(block->vq,
+ block->elem,
+ sizeof(block->elem));
+ virtio_notify(VIRTIO_DEVICE(stream->s),
+ block->vq);
+ QSIMPLEQ_REMOVE_HEAD(&stream->queue, entry);
+ g_free(block);
+ available -= size;
+ break;
+ }
+
+ available -= size;
+ if (!available) {
+ break;
+ }
+ }
+ if (!available) {
+ break;
+ }
+ }
+ }
+}
+
+/*
+ * Flush all buffer data from this stream's queue into the driver's virtual
+ * queue.
+ *
+ * @stream: VirtIOSoundPCMStream *stream
+ */
+static void virtio_snd_pcm_flush(VirtIOSoundPCMStream *stream)
+{
+ VirtIOSoundPCMBlock *block;
+ VirtIOSoundPCMBlock *next;
+
+ WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
+ QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
+ AUD_write(stream->voice.out, block->data, block->size);
+ virtqueue_push(block->vq, block->elem, sizeof(block->elem));
+ virtio_notify(VIRTIO_DEVICE(stream->s), block->vq);
+ QSIMPLEQ_REMOVE(&stream->queue, block, VirtIOSoundPCMBlock, entry);
+ }
+ }
+}
+
+/*
+ * Close the sound card.
+ *
+ * @stream: VirtIOSoundPCMStream *stream
+ */
+static void virtio_snd_pcm_close(VirtIOSoundPCMStream *stream)
+{
+ virtio_snd_process_cmdq(stream->s);
+ if (stream->direction == VIRTIO_SND_D_OUTPUT) {
+ AUD_close_out(&stream->pcm->snd->card, stream->voice.out);
+ stream->voice.out = NULL;
+ } else {
+ AUD_close_in(&stream->pcm->snd->card, stream->voice.in);
+ stream->voice.in = NULL;
+ }
+
+}
+
+static void virtio_snd_unrealize(DeviceState *dev)
+{
+ VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+ VirtIOSound *vsnd = VIRTIO_SND(dev);
+ VirtIOSoundPCMStream *stream;
+
+ qemu_del_vm_change_state_handler(vsnd->vmstate);
+ virtio_del_queue(vdev, 0);
+
+ trace_virtio_snd_unrealize(vsnd);
+
+ for (int i = VIRTIO_SND_D_OUTPUT; i <= VIRTIO_SND_D_INPUT; i++) {
+ stream = vsnd->pcm->streams[i];
+ virtio_snd_pcm_close(stream);
+ g_free(stream);
+ }
+
+ AUD_remove_card(&vsnd->card);
+ g_free(vsnd->pcm);
+ virtio_cleanup(vdev);
+}
+
+
+static uint32_t
+virtio_snd_pcm_read_write(VirtIOSoundPCMStream *stream,
+ VirtQueue *vq,
+ VirtQueueElement *element,
+ bool read)
+{
+ VirtIOSoundPCMBlock *fragment;
+ size_t size = iov_size(element->out_sg, element->out_num) -
+ sizeof(virtio_snd_pcm_xfer);
+ assert(size <= stream->period_bytes);
+
+ fragment = g_malloc0(sizeof(VirtIOSoundPCMBlock) + size);
+ fragment->elem = element;
+ fragment->vq = vq;
+ fragment->size = size;
+ fragment->offset = 0;
+
+ iov_to_buf(element->out_sg, element->out_num,
+ sizeof(virtio_snd_pcm_xfer),
+ fragment->data,
+ size);
+
+ QSIMPLEQ_INSERT_TAIL(&stream->queue, fragment, entry);
+
+ return fragment->size;
+}
+
+static void virtio_snd_reset(VirtIODevice *vdev)
+{
+ VirtIOSound *s = VIRTIO_SND(vdev);
+ virtio_snd_ctrl_command *cmd;
+
+ WITH_QEMU_LOCK_GUARD(&s->cmdq_mutex) {
+ while (!QTAILQ_EMPTY(&s->cmdq)) {
+ cmd = QTAILQ_FIRST(&s->cmdq);
+ QTAILQ_REMOVE(&s->cmdq, cmd, next);
+ g_free(cmd);
+ }
+ }
+}
+
+static void virtio_snd_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
+
+
+ set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
+ device_class_set_props(dc, virtio_snd_properties);
+
+ dc->vmsd = &vmstate_virtio_snd;
+ vdc->vmsd = &vmstate_virtio_snd_device;
+ vdc->realize = virtio_snd_realize;
+ vdc->unrealize = virtio_snd_unrealize;
+ vdc->get_config = virtio_snd_get_config;
+ vdc->set_config = virtio_snd_set_config;
+ vdc->get_features = get_features;
+ vdc->reset = virtio_snd_reset;
+ vdc->legacy_features = 0;
+}
+
+static const TypeInfo virtio_snd_info = {
+ .name = TYPE_VIRTIO_SND,
+ .parent = TYPE_VIRTIO_DEVICE,
+ .instance_size = sizeof(VirtIOSound),
+ .class_init = virtio_snd_class_init,
+};
+
+static void virtio_snd_register(void)
+{
+ type_register_static(&virtio_snd_info);
+}
+
+type_init(virtio_snd_register);
diff --git a/include/hw/virtio/virtio-snd.h b/include/hw/virtio/virtio-snd.h
new file mode 100644
index 0000000000..c19e71f40f
--- /dev/null
+++ b/include/hw/virtio/virtio-snd.h
@@ -0,0 +1,194 @@
+/*
+ * VIRTIO Sound Device conforming to
+ *
+ * "Virtual I/O Device (VIRTIO) Version 1.2
+ * Committee Specification Draft 01
+ * 09 May 2022"
+ *
+ * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
+ * Copyright (C) 2019 OpenSynergy GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version. See the COPYING file in the
+ * top-level directory.
+ */
+
+#ifndef QEMU_VIRTIO_SOUND_H
+#define QEMU_VIRTIO_SOUND_H
+
+#include "hw/virtio/virtio.h"
+#include "audio/audio.h"
+#include "standard-headers/linux/virtio_ids.h"
+#include "standard-headers/linux/virtio_snd.h"
+
+#define TYPE_VIRTIO_SND "virtio-sound-device"
+#define VIRTIO_SND(obj) \
+ OBJECT_CHECK(VirtIOSound, (obj), TYPE_VIRTIO_SND)
+
+typedef struct VirtIOSound {
+ VirtIODevice parent_obj;
+ struct VirtQueue *queues[VIRTIO_SND_VQ_MAX];
+ struct VirtIOSoundPCM *pcm;
+ bool virtio_access_is_big_endian;
+ QEMUSoundCard card;
+ VMChangeStateEntry *vmstate;
+ char *audiodev;
+ struct virtio_snd_config snd_conf;
+ QemuMutex cmdq_mutex;
+ QTAILQ_HEAD(, virtio_snd_ctrl_command) cmdq;
+ bool processing_cmdq;
+} VirtIOSound;
+
+typedef struct virtio_snd_ctrl_command {
+ struct VirtQueueElement *elem;
+ struct VirtQueue *vq;
+ struct virtio_snd_hdr ctrl;
+ struct virtio_snd_hdr resp;
+ bool finished;
+ QTAILQ_ENTRY(virtio_snd_ctrl_command) next;
+} virtio_snd_ctrl_command;
+
+#define VIRTIO_SND_FILL_CMD(out) do { \
+ size_t s; \
+ s = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num, 0, \
+ &out, sizeof(out)); \
+ if (s != sizeof(out)) { \
+ qemu_log_mask(LOG_GUEST_ERROR, \
+ "%s: virtio-snd command size incorrect %zu vs \
+ %zu\n", __func__, s, sizeof(out)); \
+ return; \
+ } \
+ } while (0)
+
+/* CONFIGURATION SPACE */
+
+typedef struct virtio_snd_config virtio_snd_config;
+
+/* COMMON DEFINITIONS */
+
+/* common header for request/response*/
+typedef struct virtio_snd_hdr virtio_snd_hdr;
+
+/* event notification */
+typedef struct virtio_snd_event virtio_snd_event;
+
+/* common control request to query an item information */
+typedef struct virtio_snd_query_info virtio_snd_query_info;
+
+/* JACK CONTROL MESSAGES */
+
+typedef struct virtio_snd_jack_hdr virtio_snd_jack_hdr;
+
+/* jack information structure */
+typedef struct virtio_snd_jack_info virtio_snd_jack_info;
+
+/* jack remapping control request */
+typedef struct virtio_snd_jack_remap virtio_snd_jack_remap;
+
+/*
+ * PCM CONTROL MESSAGES
+ */
+typedef struct virtio_snd_pcm_hdr virtio_snd_pcm_hdr;
+
+/* PCM stream info structure */
+typedef struct virtio_snd_pcm_info virtio_snd_pcm_info;
+
+/* set PCM stream params */
+typedef struct virtio_snd_pcm_set_params virtio_snd_pcm_set_params;
+
+/* I/O request header */
+typedef struct virtio_snd_pcm_xfer virtio_snd_pcm_xfer;
+
+/* I/O request status */
+typedef struct virtio_snd_pcm_status virtio_snd_pcm_status;
+
+/* Stream params */
+typedef struct VirtIOSoundPCMParams {
+ uint32_t features;
+ uint32_t buffer_bytes; /* size of hardware buffer in bytes */
+ uint32_t period_bytes; /* size of hardware period in bytes */
+ uint8_t channels;
+ uint8_t format;
+ uint8_t rate;
+} VirtIOSoundPCMParams;
+
+#define VIRTIO_SND_PCM_MIN_CHANNELS 2
+
+typedef struct VirtIOSoundPCMBlock VirtIOSoundPCMBlock;
+typedef struct VirtIOSoundPCM VirtIOSoundPCM;
+
+struct VirtIOSoundPCMBlock {
+ QSIMPLEQ_ENTRY(VirtIOSoundPCMBlock) entry;
+ struct VirtQueueElement *elem;
+ struct VirtQueue *vq;
+ int size;
+ int offset;
+ uint8_t data[];
+};
+
+typedef struct VirtIOSoundPCMStream {
+ VirtIOSoundPCM *pcm;
+ struct virtio_snd_pcm_info info;
+ uint32_t id;
+ uint32_t buffer_bytes;
+ uint32_t period_bytes;
+ /* channel position values (VIRTIO_SND_CHMAP_XXX) */
+ uint8_t positions[VIRTIO_SND_CHMAP_MAX_SIZE];
+ VirtIOSound *s;
+ uint32_t features; /* 1 << VIRTIO_SND_PCM_F_XXX */
+ uint64_t formats; /* 1 << VIRTIO_SND_PCM_FMT_XXX */
+ uint64_t rates; /* 1 << VIRTIO_SND_PCM_RATE_XXX */
+ uint8_t direction;
+ uint8_t channels_min;
+ uint8_t channels_max;
+ bool flushing;
+ struct audsettings as;
+ struct audsettings desired_as;
+ union {
+ SWVoiceIn *in;
+ SWVoiceOut *out;
+ } voice;
+ QemuMutex queue_mutex;
+ QSIMPLEQ_HEAD(, VirtIOSoundPCMBlock) queue;
+} VirtIOSoundPCMStream;
+
+struct VirtIOSoundPCM {
+ VirtIOSound *snd;
+ struct VirtIOSoundPCMParams **pcm_params;
+ VirtIOSoundPCMStream **streams;
+ struct virtio_snd_jack **jacks;
+};
+
+void virtio_snd_common_realize(DeviceState *dev,
+ VirtIOHandleOutput ctrl,
+ VirtIOHandleOutput evt,
+ VirtIOHandleOutput txq,
+ VirtIOHandleOutput rxq,
+ Error **errp);
+
+static inline const char *print_code(int code)
+{
+ switch (code) {
+ case VIRTIO_SND_R_JACK_INFO:
+ return "VIRTIO_SND_R_JACK_INFO";
+ case VIRTIO_SND_R_JACK_REMAP:
+ return "VIRTIO_SND_R_JACK_REMAP";
+ case VIRTIO_SND_R_PCM_INFO:
+ return "VIRTIO_SND_R_PCM_INFO";
+ case VIRTIO_SND_R_PCM_SET_PARAMS:
+ return "VIRTIO_SND_R_PCM_SET_PARAMS";
+ case VIRTIO_SND_R_PCM_PREPARE:
+ return "VIRTIO_SND_R_PCM_PREPARE";
+ case VIRTIO_SND_R_PCM_RELEASE:
+ return "VIRTIO_SND_R_PCM_RELEASE";
+ case VIRTIO_SND_R_PCM_START:
+ return "VIRTIO_SND_R_PCM_START";
+ case VIRTIO_SND_R_PCM_STOP:
+ return "VIRTIO_SND_R_PCM_STOP";
+ case VIRTIO_SND_R_CHMAP_INFO:
+ return "VIRTIO_SND_R_CHMAP_INFO";
+ default:
+ return "invalid code";
+ }
+};
+#endif
--
2.39.2
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 1/3] Add virtio-sound device
2023-06-08 15:56 ` [PATCH v2 1/3] Add virtio-sound device Manos Pitsidianakis
@ 2023-07-17 15:38 ` Alex Bennée
0 siblings, 0 replies; 8+ messages in thread
From: Alex Bennée @ 2023-07-17 15:38 UTC (permalink / raw)
To: Manos Pitsidianakis; +Cc: Igor Skalkin, Anton Yakovlev, qemu-devel
Manos Pitsidianakis <manos.pitsidianakis@linaro.org> writes:
> This patch adds an audio device implementing the recent virtio sound
> spec (1.2).
>
> PCM functionality is implemented, and jack[0], chmaps[1] messages are
> at the moment left unimplemented.
>
> PS2: This patch was based on a draft patch posted by OpenSynergy in 2019. [2]
>
> [0]: https://www.kernel.org/doc/html/latest/sound/designs/jack-controls.html
> [1]: https://www.kernel.org/doc/html/latest/sound/designs/channel-mapping-api.html
> [2]: https://github.com/OpenSynergy/qemu/commit/5a2f350eec5d157b90d9c7b40a8e603f4da92471#diff-fa5c10be8476fb5385a280885d527b0b40dfc11ddcc74369fce085d8b5b17bbd
>
> Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
> Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
> Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
> ---
> MAINTAINERS | 6 +
> hw/virtio/Kconfig | 5 +
> hw/virtio/meson.build | 1 +
> hw/virtio/trace-events | 21 +
> hw/virtio/virtio-snd.c | 1121 ++++++++++++++++++++++++++++++++
> include/hw/virtio/virtio-snd.h | 194 ++++++
> 6 files changed, 1348 insertions(+)
> create mode 100644 hw/virtio/virtio-snd.c
> create mode 100644 include/hw/virtio/virtio-snd.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 1c93ab0ee5..5d5475b1c1 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2218,6 +2218,12 @@ F: hw/virtio/virtio-mem-pci.h
> F: hw/virtio/virtio-mem-pci.c
> F: include/hw/virtio/virtio-mem.h
>
> +virtio-snd
> +M: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
> +S: Supported
> +F: hw/virtio/virtio-snd*.c
> +F: include/hw/virtio/virtio-snd.h
> +
> nvme
> M: Keith Busch <kbusch@kernel.org>
> M: Klaus Jensen <its@irrelevant.dk>
> diff --git a/hw/virtio/Kconfig b/hw/virtio/Kconfig
> index 89e9e426d8..fcc522ed21 100644
> --- a/hw/virtio/Kconfig
> +++ b/hw/virtio/Kconfig
> @@ -17,6 +17,11 @@ config VIRTIO_PCI
> depends on PCI
> select VIRTIO
>
> +config VIRTIO_SND
> + bool
> + default y
> + depends on VIRTIO
> +
> config VIRTIO_MMIO
> bool
> select VIRTIO
> diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build
> index bdec78bfc6..8cf49af618 100644
> --- a/hw/virtio/meson.build
> +++ b/hw/virtio/meson.build
> @@ -68,5 +68,6 @@ softmmu_ss.add(when: 'CONFIG_VIRTIO', if_false: files('virtio-stub.c'))
> softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('vhost-stub.c'))
> softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('virtio-stub.c'))
> softmmu_ss.add(files('virtio-hmp-cmds.c'))
> +softmmu_ss.add(when: 'CONFIG_VIRTIO_SND', if_true:
> files('virtio-snd.c'))
I suspect this wants to be above with the other specific_virtio_ss devices,
currently:
specific_virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_GPIO'], if_true: files('vhost-user-gpio-pci.c'))
specific_virtio_ss.add(when: 'CONFIG_VHOST_USER_SCMI', if_true: files('vhost-user-scmi.c'))
specific_virtio_ss.add(when: ['CONFIG_VIRTIO_PCI','CONFIG_VHOST_USER_SCMI'], if_true: files('vhost-user-sc
Although I suspect the vhost-user-scmi-pci and vhost-user-gpio-pci need
to be shuffled down into the virtio_pci_ss source set bellow (as
separate patches, and maybe start sorting them?)
>
> specific_ss.add_all(when: 'CONFIG_VIRTIO', if_true: specific_virtio_ss)
> diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
> index 8f8d05cf9b..b77d78abdc 100644
> --- a/hw/virtio/trace-events
> +++ b/hw/virtio/trace-events
> @@ -151,3 +151,24 @@ virtio_pmem_flush_done(int type) "fsync return=%d"
> virtio_gpio_start(void) "start"
> virtio_gpio_stop(void) "stop"
> virtio_gpio_set_status(uint8_t status) "0x%x"
> +
> +#virtio-snd.c
> +virtio_snd_pcm_stream_flush(int stream) "flushing stream %d"
> +virtio_snd_handle_ctrl(void *vdev, void *vq) "snd %p: handle ctrl event for queue %p"
> +#virtio_snd_handle_jack_info(int jack) "VIRTIO_SND_JACK_INFO called for jack %d"
> +#virtio_snd_handle_jack_remap(void) "VIRTIO_SND_PCM_JACK_REMAP called"
> +virtio_snd_handle_pcm_info(int stream) "VIRTIO_SND_R_PCM_INFO called for stream %d"
> +virtio_snd_handle_pcm_set_params(int stream) "VIRTIO_SND_PCM_SET_PARAMS called for stream %d"
> +virtio_snd_handle_pcm_start_stop(const char *code, int stream) "%s called for stream %d"
> +virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE called for stream %d"
> +virtio_snd_handle_chmap_info(void) "VIRTIO_SND_CHMAP_INFO called"
> +virtio_snd_handle_xfer(void) "tx/rx queue callback called"
> +virtio_snd_handle_event(void) "event queue callback called"
> +virtio_snd_realize(void *snd) "snd %p: realize"
> +virtio_snd_unrealize(void *snd) "snd %p: unrealize"
> +virtio_snd_get_features(void *vdev, uint64_t features) "snd %p: get_features 0x%"PRIx64
> +virtio_snd_get_config(void *vdev, uint32_t jacks, uint32_t streams, uint32_t chmaps) "snd %p: get_config jacks=%d streams=%d chmaps=%d"
> +virtio_snd_set_config(void *vdev, uint32_t jacks, uint32_t new_jacks, uint32_t streams, uint32_t new_streams, uint32_t chmaps, uint32_t new_chmaps) "snd %p: set_config jacks from %d->%d, streams from %d->%d, chmaps from %d->%d"
> +virtio_snd_vm_state_running(void) "vm state running"
> +virtio_snd_vm_state_stopped(void) "vm state stopped"
> +virtio_snd_handle_code(int val, const char *code) "ctrl code msg val = %d == %s"
> diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c
> new file mode 100644
> index 0000000000..e3b6c353ad
> --- /dev/null
> +++ b/hw/virtio/virtio-snd.c
> @@ -0,0 +1,1121 @@
> +/*
> + * VIRTIO Sound Device conforming to
> + *
> + * "Virtual I/O Device (VIRTIO) Version 1.2
> + * Committee Specification Draft 01
> + * 09 May 2022"
The canonical URL wouldn't go amiss here:
https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html#x1-52900014
> + *
> + * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
> + * Copyright (C) 2019 OpenSynergy GmbH
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or
> + * (at your option) any later version. See the COPYING file in the
> + * top-level directory.
> + */
> +
<snip>
> +
> +/*
> + * Set the given stream params.
> + * Called by both virtio_snd_handle_pcm_set_params and during device
> + * initialization.
> + * Returns the response status code. (VIRTIO_SND_S_*).
> + *
> + * @s: VirtIOSound device
> + * @params: The PCM params as defined in the virtio specification
> + */
> +static
> +uint32_t virtio_snd_pcm_set_params_impl(VirtIOSound *s,
> + virtio_snd_pcm_set_params *params)
> +{
> + uint32_t supported_formats, supported_rates;
> + VirtIOSoundPCMParams *st_params;
> + uint32_t stream_id = params->hdr.stream_id;
> +
> + if (stream_id > s->snd_conf.streams || !(s->pcm->pcm_params)) {
> + virtio_error(VIRTIO_DEVICE(s), "Streams have not been initialized.\n");
> + return VIRTIO_SND_S_BAD_MSG;
> + }
> +
> + if (!s->pcm->pcm_params[stream_id]) {
> + s->pcm->pcm_params[stream_id] = g_new0(VirtIOSoundPCMParams, 1);
> + }
> + st_params = virtio_snd_pcm_get_params(s, stream_id);
> +
> + st_params->features = params->features;
> + st_params->buffer_bytes = params->buffer_bytes;
> + st_params->period_bytes = params->period_bytes;
> +
> + if (params->channels < 1 || params->channels > AUDIO_MAX_CHANNELS) {
> + error_report("Number of channels is not supported.");
> + return VIRTIO_SND_S_NOT_SUPP;
> + }
> + st_params->channels = params->channels;
> +
> + supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
> + | 1 << VIRTIO_SND_PCM_FMT_U8
> + | 1 << VIRTIO_SND_PCM_FMT_S16
> + | 1 << VIRTIO_SND_PCM_FMT_U16
> + | 1 << VIRTIO_SND_PCM_FMT_S32
> + | 1 << VIRTIO_SND_PCM_FMT_U32
> + | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
> +
> + supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
> + | 1 << VIRTIO_SND_PCM_RATE_8000
> + | 1 << VIRTIO_SND_PCM_RATE_11025
> + | 1 << VIRTIO_SND_PCM_RATE_16000
> + | 1 << VIRTIO_SND_PCM_RATE_22050
> + | 1 << VIRTIO_SND_PCM_RATE_32000
> + | 1 << VIRTIO_SND_PCM_RATE_44100
> + | 1 << VIRTIO_SND_PCM_RATE_48000
> + | 1 << VIRTIO_SND_PCM_RATE_64000
> + | 1 << VIRTIO_SND_PCM_RATE_88200
> + | 1 << VIRTIO_SND_PCM_RATE_96000
> + | 1 << VIRTIO_SND_PCM_RATE_176400
> + | 1 << VIRTIO_SND_PCM_RATE_192000
> + | 1 << VIRTIO_SND_PCM_RATE_384000;
There seems to be a lot of duplication of constants with
virtio_snd_pcm_prepare_impl bellow. Is this stuff that depends on the
backend? Is it fixed or dynamic depending on the machine?
> +
> + if (!(supported_formats & (1 << params->format))) {
> + error_report("Stream format is not supported.");
> + return VIRTIO_SND_S_NOT_SUPP;
> + }
> + st_params->format = params->format;
> +
> + if (!(supported_rates & (1 << params->rate))) {
> + error_report("Stream rate is not supported.");
> + return VIRTIO_SND_S_NOT_SUPP;
> + }
> + st_params->rate = params->rate;
> + st_params->period_bytes = params->period_bytes;
> + st_params->buffer_bytes = params->buffer_bytes;
> +
> + return VIRTIO_SND_S_OK;
> +}
> +
> +/*
> + * Handles the VIRTIO_SND_R_PCM_SET_PARAMS request.
> + *
> + * @s: VirtIOSound device
> + * @cmd: The request command queue element from VirtIOSound cmdq field
> + */
> +static void virtio_snd_handle_pcm_set_params(VirtIOSound *s,
> + virtio_snd_ctrl_command *cmd)
> +{
> + virtio_snd_pcm_set_params req;
> + uint32_t sz;
> +
> + sz = iov_to_buf(cmd->elem->out_sg,
> + cmd->elem->out_num,
> + 0,
> + &req,
> + sizeof(req));
> + assert(sz == sizeof(virtio_snd_pcm_set_params));
> +
> + trace_virtio_snd_handle_pcm_set_params(req.hdr.stream_id);
> + cmd->resp.code = virtio_snd_pcm_set_params_impl(s, &req);
> +
> + return;
> +}
> +
> +/*
> + * Get a QEMU Audiosystem compatible format value from a VIRTIO_SND_PCM_FMT_*
> + */
> +static AudioFormat virtio_snd_get_qemu_format(uint32_t format)
> +{
> + switch (format) {
> + case VIRTIO_SND_PCM_FMT_U8:
> + return AUDIO_FORMAT_U8;
Dare I suggest macros?
#define CASE(FMT) \
case VIRTIO_SND_PCM_FMT__##FMT: \
return AUDIO_FORMAT_##FMT
case(S8);
case(U16);
...
default:
return -1;
#undef CASE
I know it's not quite as hygienic as rust but this is C ;-)
> + case VIRTIO_SND_PCM_FMT_S8:
> + return AUDIO_FORMAT_S8;
> + case VIRTIO_SND_PCM_FMT_U16:
> + return AUDIO_FORMAT_U16;
> + case VIRTIO_SND_PCM_FMT_S16:
> + return AUDIO_FORMAT_S16;
> + case VIRTIO_SND_PCM_FMT_U32:
> + return AUDIO_FORMAT_U32;
> + case VIRTIO_SND_PCM_FMT_S32:
> + return AUDIO_FORMAT_S32;
> + case VIRTIO_SND_PCM_FMT_FLOAT:
> + return AUDIO_FORMAT_F32;
> + default:
> + return -1;
> + }
> +}
> +
> +/*
> + * Get a QEMU Audiosystem compatible frequency value from a
> + * VIRTIO_SND_PCM_RATE_*
> + */
> +static uint32_t virtio_snd_get_qemu_freq(uint32_t rate)
> +{
> + switch (rate) {
> + case VIRTIO_SND_PCM_RATE_5512:
> + return 5512;
Same?
> + case VIRTIO_SND_PCM_RATE_8000:
> + return 8000;
> + case VIRTIO_SND_PCM_RATE_11025:
> + return 11025;
> + case VIRTIO_SND_PCM_RATE_16000:
> + return 16000;
> + case VIRTIO_SND_PCM_RATE_22050:
> + return 22050;
> + case VIRTIO_SND_PCM_RATE_32000:
> + return 32000;
> + case VIRTIO_SND_PCM_RATE_44100:
> + return 44100;
> + case VIRTIO_SND_PCM_RATE_48000:
> + return 48000;
> + case VIRTIO_SND_PCM_RATE_64000:
> + return 64000;
> + case VIRTIO_SND_PCM_RATE_88200:
> + return 88200;
> + case VIRTIO_SND_PCM_RATE_96000:
> + return 96000;
> + case VIRTIO_SND_PCM_RATE_176400:
> + return 176400;
> + case VIRTIO_SND_PCM_RATE_192000:
> + return 192000;
> + case VIRTIO_SND_PCM_RATE_384000:
> + return 384000;
> + default:
> + return -1;
> + }
> +}
> +
> +/*
> + * Get QEMU Audiosystem compatible audsettings from virtio based pcm stream
> + * params.
> + */
> +static void virtio_snd_get_qemu_audsettings(audsettings *as,
> + VirtIOSoundPCMParams *params)
> +{
> + as->nchannels = MIN(AUDIO_MAX_CHANNELS, params->channels);
> + as->fmt = virtio_snd_get_qemu_format(params->format);
> + as->freq = virtio_snd_get_qemu_freq(params->rate);
> + as->endianness = AUDIO_HOST_ENDIANNESS;
> +}
> +
> +/*
> + * Prepares a VirtIOSound card stream.
> + * Returns the response status code. (VIRTIO_SND_S_*).
> + *
> + * @s: VirtIOSound device
> + * @stream_id: stream id
> + */
> +static uint32_t virtio_snd_pcm_prepare_impl(VirtIOSound *s, uint32_t stream_id)
> +{
> + audsettings as;
> + uint32_t supported_formats, supported_rates;
> + VirtIOSoundPCMParams *params;
> + VirtIOSoundPCMStream *stream;
> +
> + if (!s->pcm->streams
> + || !s->pcm->pcm_params
> + || !s->pcm->pcm_params[stream_id]) {
> + return VIRTIO_SND_S_BAD_MSG;
> + }
> +
> + supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
> + | 1 << VIRTIO_SND_PCM_FMT_U8
> + | 1 << VIRTIO_SND_PCM_FMT_S16
> + | 1 << VIRTIO_SND_PCM_FMT_U16
> + | 1 << VIRTIO_SND_PCM_FMT_S32
> + | 1 << VIRTIO_SND_PCM_FMT_U32
> + | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
> +
> + supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
> + | 1 << VIRTIO_SND_PCM_RATE_8000
> + | 1 << VIRTIO_SND_PCM_RATE_11025
> + | 1 << VIRTIO_SND_PCM_RATE_16000
> + | 1 << VIRTIO_SND_PCM_RATE_22050
> + | 1 << VIRTIO_SND_PCM_RATE_32000
> + | 1 << VIRTIO_SND_PCM_RATE_44100
> + | 1 << VIRTIO_SND_PCM_RATE_48000
> + | 1 << VIRTIO_SND_PCM_RATE_64000
> + | 1 << VIRTIO_SND_PCM_RATE_88200
> + | 1 << VIRTIO_SND_PCM_RATE_96000
> + | 1 << VIRTIO_SND_PCM_RATE_176400
> + | 1 << VIRTIO_SND_PCM_RATE_192000
> + | 1 << VIRTIO_SND_PCM_RATE_384000;
> +
> + params = virtio_snd_pcm_get_params(s, stream_id);
> + assert(params);
asserting for something you expect to happen is bad form. If it
shouldn't happen maybe the assert should be lower (i.e. in
virtio_snd_pcm_get_params itself)?
> +
> + virtio_snd_get_qemu_audsettings(&as, params);
> +
> + stream = g_new0(VirtIOSoundPCMStream, 1);
> +
> + stream->id = stream_id;
> + stream->pcm = s->pcm;
> + stream->direction = stream_id < s->snd_conf.streams / 2 +
> + (s->snd_conf.streams & 1) ? VIRTIO_SND_D_OUTPUT : VIRTIO_SND_D_INPUT;
> + stream->info.hdr.hda_fn_nid = VIRTIO_SOUND_HDA_FN_NID;
> + stream->features = 0;
> + stream->channels_min = 1;
> + stream->channels_max = as.nchannels;
> + stream->formats = supported_formats;
> + stream->rates = supported_rates;
> + stream->s = s;
> +
> + stream->buffer_bytes = params->buffer_bytes;
> + stream->period_bytes = params->period_bytes;
> +
> + stream->positions[0] = VIRTIO_SND_CHMAP_FL;
> + stream->positions[1] = VIRTIO_SND_CHMAP_FR;
> +
> +
> + if (stream->direction == VIRTIO_SND_D_OUTPUT) {
> + stream->voice.out = AUD_open_out(&s->card,
> + stream->voice.out,
> + "virtio_snd_card",
> + stream,
> + virtio_snd_pcm_out_cb,
> + &as);
> +
> + } else {
> + qemu_log_mask(LOG_UNIMP, "virtio_snd: input/capture is unimplemented.");
> + /*
> + * stream->voice.in = AUD_open_in(&s->card,
> + * stream->voice.in,
> + * "virtio_snd_card",
> + * stream,
> + * virtio_snd_input_cb,
> + * &as);
> + */
> + }
> +
> + stream->as = as;
> + stream->desired_as = stream->as;
> + qemu_mutex_init(&stream->queue_mutex);
> + QSIMPLEQ_INIT(&stream->queue);
> +
> + s->pcm->streams[stream_id] = stream;
> +
> + return VIRTIO_SND_S_OK;
> +}
> +
> +/*
> + * Handles VIRTIO_SND_R_PCM_PREPARE.
> + *
> + * @s: VirtIOSound device
> + * @cmd: The request command queue element from VirtIOSound cmdq field
> + */
> +static void virtio_snd_handle_pcm_prepare(VirtIOSound *s,
> + virtio_snd_ctrl_command *cmd)
> +{
> + uint32_t stream_id;
> + size_t sz;
> +
> + sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num,
> + sizeof(virtio_snd_hdr), &stream_id, sizeof(stream_id));
> + assert(sz == sizeof(uint32_t));
> +
> + cmd->resp.code = virtio_snd_pcm_prepare_impl(s, stream_id);
> + return;
> +}
> +
> +/*
> + * Handles VIRTIO_SND_R_PCM_START.
> + *
> + * @s: VirtIOSound device
> + * @cmd: The request command queue element from VirtIOSound cmdq field
> + * @start: whether to start or stop the device
> + */
> +static void virtio_snd_handle_pcm_start_stop(VirtIOSound *s,
> + virtio_snd_ctrl_command *cmd,
> + bool start)
> +{
> + VirtIOSoundPCMStream *stream;
> + virtio_snd_pcm_hdr req;
> + size_t sz;
> +
> + sz = iov_to_buf(cmd->elem->out_sg,
> + cmd->elem->out_num,
> + 0,
> + &req,
> + sizeof(req));
> + assert(sz == sizeof(virtio_snd_pcm_hdr));
asserting on guest data is also a no no.
> +
> + cmd->resp.code = VIRTIO_SND_S_OK;
> + trace_virtio_snd_handle_pcm_start_stop(start ? "VIRTIO_SND_R_PCM_START" :
> + "VIRTIO_SND_R_PCM_STOP", req.stream_id);
> +
> + stream = virtio_snd_pcm_get_stream(s, req.stream_id);
> +
> + if (stream) {
> + if (stream->direction == VIRTIO_SND_D_OUTPUT) {
> + AUD_set_active_out(stream->voice.out, start);
> + }
> + } else {
> + cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
> + }
> + return;
> +}
> +
> +/*
> + * Returns the number of bytes that have not been passed to AUD_write yet.
> + *
> + * @stream: VirtIOSoundPCMStream
> + */
> +static int virtio_snd_pcm_get_pending_bytes(VirtIOSoundPCMStream *stream)
> +{
> + VirtIOSoundPCMBlock *block;
> + VirtIOSoundPCMBlock *next;
> + int size = 0;
> +
> + WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
> + QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
> + size += block->size;
> + }
> + }
> + return size;
> +}
> +
> +/*
> + * Releases the buffer resources allocated to a stream. Seperated from the
> + * handler so that the code can be reused in the unrealize function. Returns
> + * the response status code. (VIRTIO_SND_S_*).
> + *
> + * @stream: VirtIOSoundPCMStream stream
> + * @stream_id: stream id
> + */
> +static uint32_t virtio_snd_pcm_release_impl(VirtIOSoundPCMStream *stream,
> + uint32_t stream_id)
> +{
> + assert(stream->s->pcm->streams[stream_id] == stream);
> +
> + if (virtio_snd_pcm_get_pending_bytes(stream)) {
> + /*
> + * virtio-v1.2-csd01, 5.14.6.6.5.1,
> + * Device Requirements: Stream Release
> + *
> + * - The device MUST complete all pending I/O messages for the
> + * specified stream ID.
> + * - The device MUST NOT complete the control request while there
> + * are pending I/O messages for the specified stream ID.
> + */
> + virtio_snd_process_cmdq(stream->s);
> + trace_virtio_snd_pcm_stream_flush(stream_id);
> + virtio_snd_pcm_flush(stream);
> + }
> +
> + return VIRTIO_SND_S_OK;
> +}
> +
> +/*
> + * Handles VIRTIO_SND_R_PCM_RELEASE.
> + *
> + * @s: VirtIOSound device
> + * @cmd: The request command queue element from VirtIOSound cmdq field
> + */
> +static void virtio_snd_handle_pcm_release(VirtIOSound *s,
> + virtio_snd_ctrl_command *cmd)
> +{
> + uint32_t stream_id;
> + size_t sz;
> + VirtIOSoundPCMStream *stream;
> +
> + sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num,
> + sizeof(virtio_snd_hdr), &stream_id, sizeof(stream_id));
> + assert(sz == sizeof(uint32_t));
ditto
> +
> + trace_virtio_snd_handle_pcm_release(stream_id);
> +
> + stream = virtio_snd_pcm_get_stream(s, stream_id);
> + if (!stream) {
> + error_report("already released stream %d", stream_id);
> + virtio_error(VIRTIO_DEVICE(s), "already released stream %d", stream_id);
> + cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
> + return;
> + }
> + cmd->resp.code = virtio_snd_pcm_release_impl(stream, stream_id);
> + return;
> +}
> +
> +/*
> + * The actual processing done in virtio_snd_process_cmdq().
> + *
> + * @s: VirtIOSound device
> + * @cmd: control command request
> + */
> +static inline void
> +process_cmd(VirtIOSound *s, virtio_snd_ctrl_command *cmd)
> +{
> + VIRTIO_SND_FILL_CMD(cmd->ctrl);
> + size_t sz;
> +
> + trace_virtio_snd_handle_code(cmd->ctrl.code,
> + print_code(cmd->ctrl.code));
> +
> + switch (cmd->ctrl.code) {
> + case VIRTIO_SND_R_JACK_INFO:
> + case VIRTIO_SND_R_JACK_REMAP:
> + qemu_log_mask(LOG_UNIMP,
> + "virtio_snd: jack functionality is unimplemented.");
> + break;
> + case VIRTIO_SND_R_PCM_INFO:
> + virtio_snd_handle_pcm_info(s, cmd);
> + break;
> + case VIRTIO_SND_R_PCM_SET_PARAMS:
> + virtio_snd_handle_pcm_set_params(s, cmd);
> + break;
> + case VIRTIO_SND_R_PCM_PREPARE:
> + virtio_snd_handle_pcm_prepare(s, cmd);
> + break;
> + case VIRTIO_SND_R_PCM_START:
> + virtio_snd_handle_pcm_start_stop(s, cmd, true);
> + break;
> + case VIRTIO_SND_R_PCM_STOP:
> + virtio_snd_handle_pcm_start_stop(s, cmd, false);
> + break;
> + case VIRTIO_SND_R_PCM_RELEASE:
> + virtio_snd_handle_pcm_release(s, cmd);
> + break;
> + case VIRTIO_SND_R_CHMAP_INFO:
> + qemu_log_mask(LOG_UNIMP,
> + "virtio_snd: chmap info functionality is unimplemented.");
> + trace_virtio_snd_handle_chmap_info();
> + break;
> + default:
> + /* error */
> + error_report("virtio snd header not recognized: %d", cmd->ctrl.code);
> + cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
> + }
> +
> + sz = iov_from_buf(cmd->elem->in_sg,
> + cmd->elem->in_num,
> + 0,
> + &cmd->resp,
> + sizeof(cmd->resp));
> + assert(sz == sizeof(cmd->resp));
> + virtqueue_push(cmd->vq, cmd->elem, sizeof(cmd->elem));
> + virtio_notify(VIRTIO_DEVICE(s), cmd->vq);
> + cmd->finished = true;
> +}
> +
> +/*
> + * Consume all elements in command queue.
> + *
> + * @s: VirtIOSound device
> + */
> +static void virtio_snd_process_cmdq(VirtIOSound *s)
> +{
> + virtio_snd_ctrl_command *cmd;
> +
> + if (unlikely(qatomic_read(&s->processing_cmdq))) {
> + return;
> + }
> +
> + WITH_QEMU_LOCK_GUARD(&s->cmdq_mutex) {
> + qatomic_set(&s->processing_cmdq, true);
> + while (!QTAILQ_EMPTY(&s->cmdq)) {
> + cmd = QTAILQ_FIRST(&s->cmdq);
> +
> + /* process command */
> + process_cmd(s, cmd);
> +
> + QTAILQ_REMOVE(&s->cmdq, cmd, next);
> +
> + assert(cmd->finished);
> + g_free(cmd);
> + }
> + qatomic_set(&s->processing_cmdq, false);
> + }
> +}
> +
> +/*
> + * The control message handler. Pops an element from the control virtqueue,
> + * and stores them to VirtIOSound's cmdq queue and finally calls
> + * virtio_snd_process_cmdq() for processing.
> + *
> + * @vdev: VirtIOSound device
> + * @vq: Control virtqueue
> + */
> +static void virtio_snd_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
> +{
> + VirtIOSound *s = VIRTIO_SND(vdev);
> + VirtQueueElement *elem;
> + virtio_snd_ctrl_command *cmd;
> +
> + trace_virtio_snd_handle_ctrl(vdev, vq);
> +
> + if (!virtio_queue_ready(vq)) {
> + return;
> + }
> +
> + elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
> + while (elem) {
> + cmd = g_new0(virtio_snd_ctrl_command, 1);
> + cmd->elem = elem;
> + cmd->vq = vq;
> + cmd->finished = false;
> + cmd->resp.code = VIRTIO_SND_S_OK;
> + QTAILQ_INSERT_TAIL(&s->cmdq, cmd, next);
> + elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
> + }
> +
> + virtio_snd_process_cmdq(s);
> +}
> +
> +/*
> + * The event virtqueue handler.
> + * Not implemented yet.
> + *
> + * @vdev: VirtIOSound device
> + * @vq: event vq
> + */
> +static void virtio_snd_handle_event(VirtIODevice *vdev, VirtQueue *vq)
> +{
> + qemu_log_mask(LOG_UNIMP, "virtio_snd: event queue is unimplemented.");
> + trace_virtio_snd_handle_event();
> +}
> +
> +/*
> + * The tx virtqueue handler. Makes the buffers available to their respective
> + * streams for consumption.
> + *
> + * @vdev: VirtIOSound device
> + * @vq: tx virtqueue
> + */
> +static void virtio_snd_handle_xfer(VirtIODevice *vdev, VirtQueue *vq)
> +{
> + VirtIOSound *s = VIRTIO_SND(vdev);
> + VirtIOSoundPCMStream *stream = NULL;
> + VirtQueueElement *elem;
> + size_t sz;
> + virtio_snd_pcm_xfer hdr;
> + virtio_snd_pcm_status resp = { 0 };
> +
> + trace_virtio_snd_handle_xfer();
> +
> + for (;;) {
> + elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
> + if (!elem) {
> + break;
> + }
> + /* get the message hdr object */
> + sz = iov_to_buf(elem->out_sg,
> + elem->out_num,
> + 0,
> + &hdr,
> + sizeof(hdr));
> + assert(sz == sizeof(hdr));
ditto
I'm stopping now because this patch is too big...
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2 2/3] Add virtio-sound-pci device
2023-06-08 15:56 [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
2023-06-08 15:56 ` [PATCH v2 1/3] Add virtio-sound device Manos Pitsidianakis
@ 2023-06-08 15:56 ` Manos Pitsidianakis
2023-07-17 16:47 ` Alex Bennée
2023-06-08 15:56 ` [PATCH v2 3/3] Implement audio capture in virtio-snd device Manos Pitsidianakis
2023-07-13 11:00 ` [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
3 siblings, 1 reply; 8+ messages in thread
From: Manos Pitsidianakis @ 2023-06-08 15:56 UTC (permalink / raw)
To: qemu-devel; +Cc: Manos Pitsidianakis, Igor Skalkin, Anton Yakovlev
This patch adds a PCI wrapper device for the virtio-sound device.
To test this, you'll need a >=5.13 kernel compiled with
CONFIG_SND_VIRTIO=y, which at the time of writing most distros have off
by default.
Use with following flags in the invocation:
-device virtio-sound-pci,disable-legacy=on
And an audio backend listed with `-audio driver=help` that works on
your host machine, e.g.:
Pulseaudio:
-audio driver=pa,model=virtio-sound
sdl:
-audio driver=sdl,model=virtio-sound
coreaudio (macos/darwin):
-audio driver=coreaudio,model=virtio-sound
etc.
You can use speaker-test from alsa-tools to play noise, sines, or
WAV files.
Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
---
---
hw/virtio/meson.build | 1 +
hw/virtio/virtio-snd-pci.c | 102 +++++++++++++++++++++++++++++++++++++
include/hw/pci/pci.h | 1 +
softmmu/qdev-monitor.c | 1 +
4 files changed, 105 insertions(+)
create mode 100644 hw/virtio/virtio-snd-pci.c
diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build
index 8cf49af618..55d9426415 100644
--- a/hw/virtio/meson.build
+++ b/hw/virtio/meson.build
@@ -58,6 +58,7 @@ virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-serial-pc
virtio_pci_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true: files('virtio-pmem-pci.c'))
virtio_pci_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu-pci.c'))
virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem-pci.c'))
+virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SND', if_true: files('virtio-snd-pci.c'))
virtio_pci_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev-pci.c'))
specific_virtio_ss.add_all(when: 'CONFIG_VIRTIO_PCI', if_true: virtio_pci_ss)
diff --git a/hw/virtio/virtio-snd-pci.c b/hw/virtio/virtio-snd-pci.c
new file mode 100644
index 0000000000..1a41b53e07
--- /dev/null
+++ b/hw/virtio/virtio-snd-pci.c
@@ -0,0 +1,102 @@
+/*
+ * VIRTIO Sound Device PCI Bindings
+ *
+ * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version. See the COPYING file in the
+ * top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/audio/soundhw.h"
+#include "hw/virtio/virtio-pci.h"
+#include "hw/virtio/virtio-snd.h"
+
+typedef struct VirtIOSoundPCI VirtIOSoundPCI;
+
+/*
+ * virtio-snd-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_SND_PCI "virtio-sound-pci-base"
+DECLARE_INSTANCE_CHECKER(VirtIOSoundPCI, VIRTIO_SOUND_PCI,
+ TYPE_VIRTIO_SND_PCI)
+
+struct VirtIOSoundPCI {
+ VirtIOPCIProxy parent;
+ VirtIOSound vdev;
+};
+
+static Property virtio_snd_pci_properties[] = {
+ DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static const char *audiodev_id;
+
+static int virtio_snd_init_pci(PCIBus *init_bus, const char *audiodev)
+{
+ audiodev_id = audiodev;
+ return 0;
+}
+
+static void virtio_snd_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+ VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(vpci_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+ VirtIOSound *vsnd = VIRTIO_SND(&dev->vdev);
+
+ /*
+ * According to spec, non-legacy virtio PCI devices are always little
+ * endian
+ */
+ vsnd->virtio_access_is_big_endian = false;
+
+
+ qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus), errp);
+
+ qdev_prop_set_string(vdev, "audiodev", audiodev_id);
+
+ object_property_set_bool(OBJECT(vdev), "realized", true, errp);
+}
+
+static void virtio_snd_pci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
+ PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+
+ vpciklass->realize = virtio_snd_pci_realize;
+ set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
+
+ pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+ pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SND;
+ pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+ pcidev_k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
+ device_class_set_props(dc, virtio_snd_pci_properties);
+}
+
+static void virtio_snd_pci_instance_init(Object *obj)
+{
+ VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(obj);
+
+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+ TYPE_VIRTIO_SND);
+}
+
+static const VirtioPCIDeviceTypeInfo virtio_snd_pci_info = {
+ .base_name = TYPE_VIRTIO_SND_PCI,
+ .generic_name = "virtio-sound-pci",
+ .instance_size = sizeof(VirtIOSoundPCI),
+ .instance_init = virtio_snd_pci_instance_init,
+ .class_init = virtio_snd_pci_class_init,
+};
+
+static void virtio_snd_pci_register(void)
+{
+ virtio_pci_types_register(&virtio_snd_pci_info);
+ pci_register_soundhw("virtio-sound", "Virtio Sound Device",
+ virtio_snd_init_pci);
+}
+
+type_init(virtio_snd_pci_register);
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index e6d0574a29..cf4216df81 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -85,6 +85,7 @@ extern bool pci_available;
#define PCI_DEVICE_ID_VIRTIO_RNG 0x1005
#define PCI_DEVICE_ID_VIRTIO_9P 0x1009
#define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012
+#define PCI_DEVICE_ID_VIRTIO_SND 0x1019
/*
* modern virtio-pci devices get their id assigned automatically,
diff --git a/softmmu/qdev-monitor.c b/softmmu/qdev-monitor.c
index b8d2c4dadd..49d68495a3 100644
--- a/softmmu/qdev-monitor.c
+++ b/softmmu/qdev-monitor.c
@@ -108,6 +108,7 @@ static const QDevAlias qdev_alias_table[] = {
{ "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO },
{ "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW },
{ "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI},
+ { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI},
{ "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO },
{ "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW },
{ "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI },
--
2.39.2
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 2/3] Add virtio-sound-pci device
2023-06-08 15:56 ` [PATCH v2 2/3] Add virtio-sound-pci device Manos Pitsidianakis
@ 2023-07-17 16:47 ` Alex Bennée
0 siblings, 0 replies; 8+ messages in thread
From: Alex Bennée @ 2023-07-17 16:47 UTC (permalink / raw)
To: Manos Pitsidianakis; +Cc: Igor Skalkin, Anton Yakovlev, qemu-devel
Manos Pitsidianakis <manos.pitsidianakis@linaro.org> writes:
> This patch adds a PCI wrapper device for the virtio-sound device.
>
> To test this, you'll need a >=5.13 kernel compiled with
> CONFIG_SND_VIRTIO=y, which at the time of writing most distros have off
> by default.
>
> Use with following flags in the invocation:
>
> -device virtio-sound-pci,disable-legacy=on
>
> And an audio backend listed with `-audio driver=help` that works on
> your host machine, e.g.:
>
> Pulseaudio:
> -audio driver=pa,model=virtio-sound
> sdl:
> -audio driver=sdl,model=virtio-sound
> coreaudio (macos/darwin):
> -audio driver=coreaudio,model=virtio-sound
> etc.
>
> You can use speaker-test from alsa-tools to play noise, sines, or
> WAV files.
>
> Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
> ---
> ---
> hw/virtio/meson.build | 1 +
> hw/virtio/virtio-snd-pci.c | 102 +++++++++++++++++++++++++++++++++++++
> include/hw/pci/pci.h | 1 +
> softmmu/qdev-monitor.c | 1 +
> 4 files changed, 105 insertions(+)
> create mode 100644 hw/virtio/virtio-snd-pci.c
>
> diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build
> index 8cf49af618..55d9426415 100644
> --- a/hw/virtio/meson.build
> +++ b/hw/virtio/meson.build
> @@ -58,6 +58,7 @@ virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-serial-pc
> virtio_pci_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true: files('virtio-pmem-pci.c'))
> virtio_pci_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu-pci.c'))
> virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem-pci.c'))
> +virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SND', if_true: files('virtio-snd-pci.c'))
> virtio_pci_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev-pci.c'))
>
> specific_virtio_ss.add_all(when: 'CONFIG_VIRTIO_PCI', if_true: virtio_pci_ss)
> diff --git a/hw/virtio/virtio-snd-pci.c b/hw/virtio/virtio-snd-pci.c
> new file mode 100644
> index 0000000000..1a41b53e07
> --- /dev/null
> +++ b/hw/virtio/virtio-snd-pci.c
> @@ -0,0 +1,102 @@
> +/*
> + * VIRTIO Sound Device PCI Bindings
> + *
> + * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or
> + * (at your option) any later version. See the COPYING file in the
> + * top-level directory.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "hw/audio/soundhw.h"
> +#include "hw/virtio/virtio-pci.h"
> +#include "hw/virtio/virtio-snd.h"
> +
> +typedef struct VirtIOSoundPCI VirtIOSoundPCI;
> +
> +/*
> + * virtio-snd-pci: This extends VirtioPCIProxy.
> + */
> +#define TYPE_VIRTIO_SND_PCI "virtio-sound-pci-base"
> +DECLARE_INSTANCE_CHECKER(VirtIOSoundPCI, VIRTIO_SOUND_PCI,
> + TYPE_VIRTIO_SND_PCI)
> +
> +struct VirtIOSoundPCI {
> + VirtIOPCIProxy parent;
> + VirtIOSound vdev;
> +};
> +
> +static Property virtio_snd_pci_properties[] = {
> + DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
What does this control? In VirtIOPCIProxy class_code seems to be for
transitional devices. It's used inconsistently across the code base
AFAICT.
> + DEFINE_PROP_END_OF_LIST(),
> +};
> +
> +static const char *audiodev_id;
> +
> +static int virtio_snd_init_pci(PCIBus *init_bus, const char *audiodev)
> +{
> + audiodev_id = audiodev;
> + return 0;
> +}
> +
> +static void virtio_snd_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
> +{
> + VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(vpci_dev);
> + DeviceState *vdev = DEVICE(&dev->vdev);
> + VirtIOSound *vsnd = VIRTIO_SND(&dev->vdev);
> +
> + /*
> + * According to spec, non-legacy virtio PCI devices are always little
> + * endian
> + */
> + vsnd->virtio_access_is_big_endian = false;
> +
> +
> + qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus), errp);
> +
> + qdev_prop_set_string(vdev, "audiodev", audiodev_id);
> +
> + object_property_set_bool(OBJECT(vdev), "realized", true, errp);
> +}
> +
> +static void virtio_snd_pci_class_init(ObjectClass *klass, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(klass);
> + VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
> + PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
> +
> + vpciklass->realize = virtio_snd_pci_realize;
> + set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
> +
> + pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
> + pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SND;
> + pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
> + pcidev_k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
> + device_class_set_props(dc, virtio_snd_pci_properties);
> +}
> +
> +static void virtio_snd_pci_instance_init(Object *obj)
> +{
> + VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(obj);
> +
> + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
> + TYPE_VIRTIO_SND);
> +}
> +
> +static const VirtioPCIDeviceTypeInfo virtio_snd_pci_info = {
> + .base_name = TYPE_VIRTIO_SND_PCI,
> + .generic_name = "virtio-sound-pci",
> + .instance_size = sizeof(VirtIOSoundPCI),
> + .instance_init = virtio_snd_pci_instance_init,
> + .class_init = virtio_snd_pci_class_init,
> +};
> +
> +static void virtio_snd_pci_register(void)
> +{
> + virtio_pci_types_register(&virtio_snd_pci_info);
> + pci_register_soundhw("virtio-sound", "Virtio Sound Device",
> + virtio_snd_init_pci);
> +}
> +
> +type_init(virtio_snd_pci_register);
> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
> index e6d0574a29..cf4216df81 100644
> --- a/include/hw/pci/pci.h
> +++ b/include/hw/pci/pci.h
> @@ -85,6 +85,7 @@ extern bool pci_available;
> #define PCI_DEVICE_ID_VIRTIO_RNG 0x1005
> #define PCI_DEVICE_ID_VIRTIO_9P 0x1009
> #define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012
> +#define PCI_DEVICE_ID_VIRTIO_SND 0x1019
>
> /*
> * modern virtio-pci devices get their id assigned automatically,
> diff --git a/softmmu/qdev-monitor.c b/softmmu/qdev-monitor.c
> index b8d2c4dadd..49d68495a3 100644
> --- a/softmmu/qdev-monitor.c
> +++ b/softmmu/qdev-monitor.c
> @@ -108,6 +108,7 @@ static const QDevAlias qdev_alias_table[] = {
> { "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO },
> { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW },
> { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI},
> + { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI},
> { "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO },
> { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW },
> { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI },
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2 3/3] Implement audio capture in virtio-snd device
2023-06-08 15:56 [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
2023-06-08 15:56 ` [PATCH v2 1/3] Add virtio-sound device Manos Pitsidianakis
2023-06-08 15:56 ` [PATCH v2 2/3] Add virtio-sound-pci device Manos Pitsidianakis
@ 2023-06-08 15:56 ` Manos Pitsidianakis
2023-07-13 11:00 ` [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
3 siblings, 0 replies; 8+ messages in thread
From: Manos Pitsidianakis @ 2023-06-08 15:56 UTC (permalink / raw)
To: qemu-devel; +Cc: Manos Pitsidianakis, Igor Skalkin, Anton Yakovlev
Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
---
hw/virtio/trace-events | 3 +-
hw/virtio/virtio-snd.c | 239 +++++++++++++++++++++++++++++++++++------
2 files changed, 206 insertions(+), 36 deletions(-)
diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index b77d78abdc..b58c007297 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -162,7 +162,8 @@ virtio_snd_handle_pcm_set_params(int stream) "VIRTIO_SND_PCM_SET_PARAMS called f
virtio_snd_handle_pcm_start_stop(const char *code, int stream) "%s called for stream %d"
virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE called for stream %d"
virtio_snd_handle_chmap_info(void) "VIRTIO_SND_CHMAP_INFO called"
-virtio_snd_handle_xfer(void) "tx/rx queue callback called"
+virtio_snd_handle_tx_xfer(void) "tx queue callback called"
+virtio_snd_handle_rx_xfer(void) "rx queue callback called"
virtio_snd_handle_event(void) "event queue callback called"
virtio_snd_realize(void *snd) "snd %p: realize"
virtio_snd_unrealize(void *snd) "snd %p: unrealize"
diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c
index e3b6c353ad..fe7d70ff06 100644
--- a/hw/virtio/virtio-snd.c
+++ b/hw/virtio/virtio-snd.c
@@ -25,7 +25,7 @@
#define VIRTIO_SOUND_VM_VERSION 1
#define VIRTIO_SOUND_JACK_DEFAULT 0
-#define VIRTIO_SOUND_STREAM_DEFAULT 1
+#define VIRTIO_SOUND_STREAM_DEFAULT 2
#define VIRTIO_SOUND_CHMAP_DEFAULT 0
#define VIRTIO_SOUND_HDA_FN_NID 0
@@ -89,12 +89,16 @@ virtio_snd_set_config(VirtIODevice *vdev, const uint8_t *config)
}
static void virtio_snd_process_cmdq(VirtIOSound *s);
-static void virtio_snd_pcm_flush(VirtIOSoundPCMStream *stream);
+static void virtio_snd_pcm_out_flush(VirtIOSoundPCMStream *stream);
+static void virtio_snd_pcm_in_flush(VirtIOSoundPCMStream *stream);
static void virtio_snd_pcm_out_cb(void *data, int available);
-static uint32_t virtio_snd_pcm_read_write(VirtIOSoundPCMStream *stream,
+static void virtio_snd_pcm_in_cb(void *data, int available);
+static uint32_t virtio_snd_pcm_write(VirtIOSoundPCMStream *stream,
VirtQueue *vq,
- VirtQueueElement *element,
- bool read);
+ VirtQueueElement *element);
+static uint32_t virtio_snd_pcm_read(VirtIOSoundPCMStream *stream,
+ VirtQueue *vq,
+ VirtQueueElement *element);
/*
* Get a specific stream from the virtio sound card device.
@@ -450,15 +454,12 @@ static uint32_t virtio_snd_pcm_prepare_impl(VirtIOSound *s, uint32_t stream_id)
&as);
} else {
- qemu_log_mask(LOG_UNIMP, "virtio_snd: input/capture is unimplemented.");
- /*
- * stream->voice.in = AUD_open_in(&s->card,
- * stream->voice.in,
- * "virtio_snd_card",
- * stream,
- * virtio_snd_input_cb,
- * &as);
- */
+ stream->voice.in = AUD_open_in(&s->card,
+ stream->voice.in,
+ "virtio_snd_card",
+ stream,
+ virtio_snd_pcm_in_cb,
+ &as);
}
stream->as = as;
@@ -522,6 +523,8 @@ static void virtio_snd_handle_pcm_start_stop(VirtIOSound *s,
if (stream) {
if (stream->direction == VIRTIO_SND_D_OUTPUT) {
AUD_set_active_out(stream->voice.out, start);
+ } else {
+ AUD_set_active_in(stream->voice.in, start);
}
} else {
cmd->resp.code = VIRTIO_SND_S_BAD_MSG;
@@ -573,7 +576,11 @@ static uint32_t virtio_snd_pcm_release_impl(VirtIOSoundPCMStream *stream,
*/
virtio_snd_process_cmdq(stream->s);
trace_virtio_snd_pcm_stream_flush(stream_id);
- virtio_snd_pcm_flush(stream);
+ if (stream->direction == VIRTIO_SND_D_OUTPUT) {
+ virtio_snd_pcm_out_flush(stream);
+ } else {
+ virtio_snd_pcm_in_flush(stream);
+ }
}
return VIRTIO_SND_S_OK;
@@ -754,7 +761,7 @@ static void virtio_snd_handle_event(VirtIODevice *vdev, VirtQueue *vq)
* @vdev: VirtIOSound device
* @vq: tx virtqueue
*/
-static void virtio_snd_handle_xfer(VirtIODevice *vdev, VirtQueue *vq)
+static void virtio_snd_handle_tx_xfer(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIOSound *s = VIRTIO_SND(vdev);
VirtIOSoundPCMStream *stream = NULL;
@@ -763,7 +770,7 @@ static void virtio_snd_handle_xfer(VirtIODevice *vdev, VirtQueue *vq)
virtio_snd_pcm_xfer hdr;
virtio_snd_pcm_status resp = { 0 };
- trace_virtio_snd_handle_xfer();
+ trace_virtio_snd_handle_tx_xfer();
for (;;) {
elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
@@ -780,11 +787,11 @@ static void virtio_snd_handle_xfer(VirtIODevice *vdev, VirtQueue *vq)
stream = s->pcm->streams[hdr.stream_id];
assert(stream);
+ assert(hdr.stream_id != VIRTIO_SND_D_INPUT);
WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
- virtio_snd_pcm_read_write(stream,
+ virtio_snd_pcm_write(stream,
vq,
- elem,
- hdr.stream_id == VIRTIO_SND_D_INPUT);
+ elem);
resp.status = VIRTIO_SND_S_OK;
sz = iov_from_buf(elem->in_sg,
@@ -803,6 +810,53 @@ static void virtio_snd_handle_xfer(VirtIODevice *vdev, VirtQueue *vq)
virtio_notify(VIRTIO_DEVICE(s), vq);
}
+/*
+ * The rx virtqueue handler. Makes the buffers available to their respective
+ * streams for consumption.
+ *
+ * @vdev: VirtIOSound device
+ * @vq: tx virtqueue
+ */
+static void virtio_snd_handle_rx_xfer(VirtIODevice *vdev, VirtQueue *vq)
+{
+ VirtIOSound *s = VIRTIO_SND(vdev);
+ VirtIOSoundPCMStream *stream = NULL;
+ VirtQueueElement *elem;
+ size_t sz;
+ virtio_snd_pcm_xfer hdr;
+
+ trace_virtio_snd_handle_rx_xfer();
+
+ for (;;) {
+ elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
+ if (!elem) {
+ break;
+ }
+ /* get the message hdr object */
+ sz = iov_to_buf(elem->out_sg,
+ elem->out_num,
+ 0,
+ &hdr,
+ sizeof(hdr));
+ assert(sz == sizeof(hdr));
+ stream = s->pcm->streams[hdr.stream_id];
+ assert(stream);
+
+ assert(hdr.stream_id == VIRTIO_SND_D_INPUT);
+ WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
+ virtio_snd_pcm_read(stream, vq, elem);
+
+ }
+ }
+
+ /*
+ * Notify vq about virtio_snd_pcm_status responses.
+ * Buffer responses must be notified separately later.
+ */
+ virtio_notify(VIRTIO_DEVICE(s), vq);
+}
+
+
static uint64_t get_features(VirtIODevice *vdev, uint64_t features,
Error **errp)
{
@@ -928,8 +982,8 @@ static void virtio_snd_realize(DeviceState *dev, Error **errp)
virtio_snd_common_realize(dev,
virtio_snd_handle_ctrl,
virtio_snd_handle_event,
- virtio_snd_handle_xfer,
- virtio_snd_handle_xfer,
+ virtio_snd_handle_tx_xfer,
+ virtio_snd_handle_rx_xfer,
&err);
if (err != NULL) {
error_propagate(errp, err);
@@ -984,26 +1038,124 @@ static void virtio_snd_pcm_out_cb(void *data, int available)
}
/*
- * Flush all buffer data from this stream's queue into the driver's virtual
- * queue.
+ * AUD_* input callback.
*
- * @stream: VirtIOSoundPCMStream *stream
+ * @data: VirtIOSoundPCMStream stream
+ * @available: number of bytes that can be read with AUD_read()
*/
-static void virtio_snd_pcm_flush(VirtIOSoundPCMStream *stream)
+static void virtio_snd_pcm_in_cb(void *data, int available)
{
+ VirtIOSoundPCMStream *stream = data;
VirtIOSoundPCMBlock *block;
- VirtIOSoundPCMBlock *next;
+ uint32_t sz;
+ virtio_snd_pcm_status resp = { 0 };
+ int size;
WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
- QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
- AUD_write(stream->voice.out, block->data, block->size);
- virtqueue_push(block->vq, block->elem, sizeof(block->elem));
- virtio_notify(VIRTIO_DEVICE(stream->s), block->vq);
- QSIMPLEQ_REMOVE(&stream->queue, block, VirtIOSoundPCMBlock, entry);
+ while (!QSIMPLEQ_EMPTY(&stream->queue)) {
+ block = QSIMPLEQ_FIRST(&stream->queue);
+ assert(block != NULL);
+
+ for (;;) {
+ size = AUD_read(stream->voice.in,
+ block->data + block->offset,
+ MIN(stream->period_bytes - block->offset, available));
+ block->offset += size;
+ block->size += size;
+ if (size == 0 || block->size == stream->period_bytes) {
+ resp.status = VIRTIO_SND_S_OK;
+ sz = iov_from_buf(block->elem->in_sg,
+ block->elem->in_num,
+ 0,
+ &resp,
+ sizeof(resp));
+ assert(sz == sizeof(virtio_snd_pcm_status));
+
+ /* Copy data -if any- to guest */
+ if (block->size) {
+ sz = iov_from_buf(block->elem->in_sg,
+ block->elem->in_num,
+ sz,
+ &block->data,
+ block->size);
+ assert(sz <= stream->period_bytes);
+ }
+ virtqueue_push(block->vq,
+ block->elem,
+ sizeof(block->elem));
+ virtio_notify(VIRTIO_DEVICE(stream->s),
+ block->vq);
+ QSIMPLEQ_REMOVE_HEAD(&stream->queue, entry);
+ g_free(block);
+ available -= size;
+ break;
+ }
+
+ available -= size;
+ if (!available) {
+ break;
+ }
+ }
+ if (!available) {
+ break;
+ }
}
}
}
+#define virtio_snd_pcm_flush(AUD_CB) \
+ VirtIOSoundPCMBlock *block; \
+ VirtIOSoundPCMBlock *next; \
+ WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) { \
+ QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) { \
+ do { \
+ AUD_CB; \
+ } while (0) \
+ ; \
+ virtqueue_push(block->vq, block->elem, sizeof(block->elem));\
+ virtio_notify(VIRTIO_DEVICE(stream->s), block->vq); \
+ QSIMPLEQ_REMOVE(&stream->queue, \
+ block, \
+ VirtIOSoundPCMBlock, \
+ entry); \
+ } \
+ } \
+
+
+/*
+ * Flush all buffer data from this output stream's queue into the driver's
+ * virtual queue.
+ *
+ * @stream: VirtIOSoundPCMStream *stream
+ */
+static void virtio_snd_pcm_out_flush(VirtIOSoundPCMStream *stream)
+{
+ virtio_snd_pcm_flush(
+ AUD_write(stream->voice.out,
+ block->data,
+ block->size);
+ );
+}
+
+/*
+ * Flush all buffer data from this input stream's queue into the driver's
+ * virtual queue.
+ *
+ * @stream: VirtIOSoundPCMStream *stream
+ */
+static void virtio_snd_pcm_in_flush(VirtIOSoundPCMStream *stream)
+{
+ uint32_t sz;
+ virtio_snd_pcm_flush(
+ sz = iov_from_buf(block->elem->in_sg,
+ block->elem->in_num,
+ sizeof(virtio_snd_pcm_info),
+ block->data,
+ block->offset);
+ assert(sz <= block->size);
+ );
+}
+
/*
* Close the sound card.
*
@@ -1046,10 +1198,9 @@ static void virtio_snd_unrealize(DeviceState *dev)
static uint32_t
-virtio_snd_pcm_read_write(VirtIOSoundPCMStream *stream,
+virtio_snd_pcm_write(VirtIOSoundPCMStream *stream,
VirtQueue *vq,
- VirtQueueElement *element,
- bool read)
+ VirtQueueElement *element)
{
VirtIOSoundPCMBlock *fragment;
size_t size = iov_size(element->out_sg, element->out_num) -
@@ -1072,6 +1223,24 @@ virtio_snd_pcm_read_write(VirtIOSoundPCMStream *stream,
return fragment->size;
}
+static uint32_t
+virtio_snd_pcm_read(VirtIOSoundPCMStream *stream,
+ VirtQueue *vq,
+ VirtQueueElement *element)
+{
+ VirtIOSoundPCMBlock *fragment;
+
+ fragment = g_malloc0(sizeof(VirtIOSoundPCMBlock) + stream->period_bytes);
+ fragment->elem = element;
+ fragment->vq = vq;
+ fragment->size = 0;
+ fragment->offset = 0;
+
+ QSIMPLEQ_INSERT_TAIL(&stream->queue, fragment, entry);
+
+ return fragment->size;
+}
+
static void virtio_snd_reset(VirtIODevice *vdev)
{
VirtIOSound *s = VIRTIO_SND(vdev);
--
2.39.2
^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 0/3] Add VIRTIO sound card
2023-06-08 15:56 [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
` (2 preceding siblings ...)
2023-06-08 15:56 ` [PATCH v2 3/3] Implement audio capture in virtio-snd device Manos Pitsidianakis
@ 2023-07-13 11:00 ` Manos Pitsidianakis
2023-07-16 17:18 ` Philippe Mathieu-Daudé
3 siblings, 1 reply; 8+ messages in thread
From: Manos Pitsidianakis @ 2023-07-13 11:00 UTC (permalink / raw)
To: qemu-devel
Cc: Manos Pitsidianakis, Igor Skalkin, Anton Yakovlev, Paolo Bonzini,
Gerd Hoffmann, Michael S. Tsirkin, Marcel Apfelbaum,
Daniel P. Berrangé , Eduardo Habkost
Ping
Patch series on patchew:
https://patchew.org/QEMU/cover.1686238728.git.manos.pitsidianakis@linaro.org/
Patch series on lore:
https://lore.kernel.org/qemu-devel/cover.1686238728.git.manos.pitsidianakis@linaro.org/
On Thu, 08 Jun 2023 18:56, Manos Pitsidianakis <manos.pitsidianakis@linaro.org> wrote:
>This patch series adds an audio device implementing the recent virtio
>sound spec (1.2) and a corresponding PCI wrapper device.
>
>Main differences with v1 patch
><20230526204845.673031-1-manos.pitsidianakis@linaro.org>:
>
>- Split virtio-snd and virtio-snd-pci devices to two commits
>- Added audio capture support
>
>Known problems (On pipewire at least):
>
>- Stereo recording results in one channel with the recording + a ticking
> kind of artifact and one channel that has no artifacts, just the
> recording.
>
>Manos Pitsidianakis (3):
> Add virtio-sound device
> Add virtio-sound-pci device
> Implement audio capture in virtio-snd device
>
> MAINTAINERS | 6 +
> hw/virtio/Kconfig | 5 +
> hw/virtio/meson.build | 2 +
> hw/virtio/trace-events | 22 +
> hw/virtio/virtio-snd-pci.c | 102 +++
> hw/virtio/virtio-snd.c | 1290 ++++++++++++++++++++++++++++++++
> include/hw/pci/pci.h | 1 +
> include/hw/virtio/virtio-snd.h | 194 +++++
> softmmu/qdev-monitor.c | 1 +
> 9 files changed, 1623 insertions(+)
> create mode 100644 hw/virtio/virtio-snd-pci.c
> create mode 100644 hw/virtio/virtio-snd.c
> create mode 100644 include/hw/virtio/virtio-snd.h
>
>Range-diff against v1:
>1: 652c7d2d01 ! 1: 95d564fc1f Add virtio-sound and virtio-sound-pci devices
> @@ Metadata
> Author: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
>
> ## Commit message ##
> - Add virtio-sound and virtio-sound-pci devices
> + Add virtio-sound device
>
> This patch adds an audio device implementing the recent virtio sound
> - spec (1.2) and a corresponding PCI wrapper device.
> + spec (1.2).
>
> PCM functionality is implemented, and jack[0], chmaps[1] messages are
> - at the moment ignored.
> -
> - To test this, you'll need a >6.0 kernel compiled with the virtio-snd
> - flag enabled, which distros have off by default.
> -
> - Use with following flags in the invocation:
> -
> - -device virtio-sound-pci,disable-legacy=on
> -
> - And an audio backend listed with `-audio driver=help` that works on
> - your host machine, e.g.:
> -
> - Pulseaudio:
> - -audio driver=pa,model=virtio-sound,server=/run/user/1000/pulse/native
> - sdl:
> - -audio driver=sdl,model=virtio-sound
> - coreaudio:
> - -audio driver=coreaudio,model=virtio-sound
> - etc.
> -
> - You can use speaker-test from alsa-tools to play noise, sines, or
> - WAV files.
> + at the moment left unimplemented.
>
> PS2: This patch was based on a draft patch posted by OpenSynergy in 2019. [2]
>
> @@ Commit message
> Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
> Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
>
> + ## MAINTAINERS ##
> +@@ MAINTAINERS: F: hw/virtio/virtio-mem-pci.h
> + F: hw/virtio/virtio-mem-pci.c
> + F: include/hw/virtio/virtio-mem.h
> +
> ++virtio-snd
> ++M: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
> ++S: Supported
> ++F: hw/virtio/virtio-snd*.c
> ++F: include/hw/virtio/virtio-snd.h
> ++
> + nvme
> + M: Keith Busch <kbusch@kernel.org>
> + M: Klaus Jensen <its@irrelevant.dk>
> +
> ## hw/virtio/Kconfig ##
> @@ hw/virtio/Kconfig: config VIRTIO_PCI
> depends on PCI
> @@ hw/virtio/Kconfig: config VIRTIO_PCI
> select VIRTIO
>
> ## hw/virtio/meson.build ##
> -@@ hw/virtio/meson.build: virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-serial-pc
> - virtio_pci_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true: files('virtio-pmem-pci.c'))
> - virtio_pci_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu-pci.c'))
> - virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem-pci.c'))
> -+virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SND', if_true: files('virtio-snd-pci.c'))
> - virtio_pci_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev-pci.c'))
> -
> - specific_virtio_ss.add_all(when: 'CONFIG_VIRTIO_PCI', if_true: virtio_pci_ss)
> @@ hw/virtio/meson.build: softmmu_ss.add(when: 'CONFIG_VIRTIO', if_false: files('virtio-stub.c'))
> softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('vhost-stub.c'))
> softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('virtio-stub.c'))
> @@ hw/virtio/trace-events: virtio_pmem_flush_done(int type) "fsync return=%d"
> +virtio_snd_handle_pcm_info(int stream) "VIRTIO_SND_R_PCM_INFO called for stream %d"
> +virtio_snd_handle_pcm_set_params(int stream) "VIRTIO_SND_PCM_SET_PARAMS called for stream %d"
> +virtio_snd_handle_pcm_start_stop(const char *code, int stream) "%s called for stream %d"
> -+virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE called for stream %id"
> ++virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE called for stream %d"
> +virtio_snd_handle_chmap_info(void) "VIRTIO_SND_CHMAP_INFO called"
> +virtio_snd_handle_xfer(void) "tx/rx queue callback called"
> -+virtio_snd_handle_xfer_elem(const char * k) "xfer handled in virtio_snd_pcm_%s"
> +virtio_snd_handle_event(void) "event queue callback called"
> -+virtio_snd_cpu_is_stopped(void *snd, int size) "snd %p: cpu is stopped, dropping %d bytes"
> +virtio_snd_realize(void *snd) "snd %p: realize"
> -+virtio_snd_unrealize(void *snd) "snd %p: realize"
> ++virtio_snd_unrealize(void *snd) "snd %p: unrealize"
> +virtio_snd_get_features(void *vdev, uint64_t features) "snd %p: get_features 0x%"PRIx64
> +virtio_snd_get_config(void *vdev, uint32_t jacks, uint32_t streams, uint32_t chmaps) "snd %p: get_config jacks=%d streams=%d chmaps=%d"
> +virtio_snd_set_config(void *vdev, uint32_t jacks, uint32_t new_jacks, uint32_t streams, uint32_t new_streams, uint32_t chmaps, uint32_t new_chmaps) "snd %p: set_config jacks from %d->%d, streams from %d->%d, chmaps from %d->%d"
> @@ hw/virtio/trace-events: virtio_pmem_flush_done(int type) "fsync return=%d"
> +virtio_snd_vm_state_stopped(void) "vm state stopped"
> +virtio_snd_handle_code(int val, const char *code) "ctrl code msg val = %d == %s"
>
> - ## hw/virtio/virtio-snd-pci.c (new) ##
> -@@
> -+/*
> -+ * VIRTIO Sound Device PCI Bindings
> -+ *
> -+ * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
> -+ *
> -+ * This work is licensed under the terms of the GNU GPL, version 2 or
> -+ * (at your option) any later version. See the COPYING file in the
> -+ * top-level directory.
> -+ */
> -+
> -+#include "qemu/osdep.h"
> -+#include "hw/audio/soundhw.h"
> -+#include "hw/virtio/virtio-pci.h"
> -+#include "hw/virtio/virtio-snd.h"
> -+
> -+typedef struct VirtIOSoundPCI VirtIOSoundPCI;
> -+
> -+/*
> -+ * virtio-snd-pci: This extends VirtioPCIProxy.
> -+ */
> -+#define TYPE_VIRTIO_SND_PCI "virtio-sound-pci-base"
> -+DECLARE_INSTANCE_CHECKER(VirtIOSoundPCI, VIRTIO_SOUND_PCI,
> -+ TYPE_VIRTIO_SND_PCI)
> -+
> -+struct VirtIOSoundPCI {
> -+ VirtIOPCIProxy parent;
> -+ VirtIOSound vdev;
> -+};
> -+
> -+static Property virtio_snd_pci_properties[] = {
> -+ DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
> -+ DEFINE_PROP_END_OF_LIST(),
> -+};
> -+
> -+static const char *audiodev_id;
> -+
> -+static int virtio_snd_init_pci(PCIBus *init_bus, const char *audiodev)
> -+{
> -+ audiodev_id = audiodev;
> -+ return 0;
> -+}
> -+
> -+static void virtio_snd_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
> -+{
> -+ VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(vpci_dev);
> -+ DeviceState *vdev = DEVICE(&dev->vdev);
> -+ VirtIOSound *vsnd = VIRTIO_SND(&dev->vdev);
> -+
> -+ /*
> -+ * According to spec, non-legacy virtio PCI devices are always little
> -+ * endian
> -+ */
> -+ vsnd->virtio_access_is_big_endian = false;
> -+
> -+
> -+ qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus), errp);
> -+
> -+
> -+ qdev_prop_set_string(vdev, "audiodev", audiodev_id);
> -+ AUD_register_card ("virtio-sound", &dev->vdev.card);
> -+
> -+ object_property_set_bool(OBJECT(vdev), "realized", true, errp);
> -+}
> -+
> -+static void virtio_snd_pci_class_init(ObjectClass *klass, void *data)
> -+{
> -+ DeviceClass *dc = DEVICE_CLASS(klass);
> -+ VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
> -+ PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
> -+
> -+ vpciklass->realize = virtio_snd_pci_realize;
> -+ set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
> -+
> -+ pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
> -+ pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SND;
> -+ pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
> -+ pcidev_k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
> -+ device_class_set_props(dc, virtio_snd_pci_properties);
> -+}
> -+
> -+static void virtio_snd_pci_instance_init(Object *obj)
> -+{
> -+ VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(obj);
> -+
> -+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
> -+ TYPE_VIRTIO_SND);
> -+}
> -+
> -+static const VirtioPCIDeviceTypeInfo virtio_snd_pci_info = {
> -+ .base_name = TYPE_VIRTIO_SND_PCI,
> -+ .generic_name = "virtio-sound-pci",
> -+ .instance_size = sizeof(VirtIOSoundPCI),
> -+ .instance_init = virtio_snd_pci_instance_init,
> -+ .class_init = virtio_snd_pci_class_init,
> -+};
> -+
> -+static void virtio_snd_pci_register(void)
> -+{
> -+ virtio_pci_types_register(&virtio_snd_pci_info);
> -+ pci_register_soundhw("virtio-sound", "Virtio Sound Device",
> -+ virtio_snd_init_pci);
> -+}
> -+
> -+type_init(virtio_snd_pci_register);
> -
> ## hw/virtio/virtio-snd.c (new) ##
> @@
> +/*
> @@ hw/virtio/virtio-snd.c (new)
> +#define VIRTIO_SOUND_STREAM_DEFAULT 1
> +#define VIRTIO_SOUND_CHMAP_DEFAULT 0
> +
> -+#define VIRTIO_SOUND_HDA_FN_NID_OUT 0
> -+#define VIRTIO_SOUND_HDA_FN_NID_IN 1
> ++#define VIRTIO_SOUND_HDA_FN_NID 0
> +
> +static const VMStateDescription vmstate_virtio_snd_device = {
> + .name = TYPE_VIRTIO_SND,
> @@ hw/virtio/virtio-snd.c (new)
> +uint32_t virtio_snd_pcm_set_params_impl(VirtIOSound *s,
> + virtio_snd_pcm_set_params *params)
> +{
> ++ uint32_t supported_formats, supported_rates;
> ++ VirtIOSoundPCMParams *st_params;
> + uint32_t stream_id = params->hdr.stream_id;
> ++
> + if (stream_id > s->snd_conf.streams || !(s->pcm->pcm_params)) {
> + virtio_error(VIRTIO_DEVICE(s), "Streams have not been initialized.\n");
> + return VIRTIO_SND_S_BAD_MSG;
> @@ hw/virtio/virtio-snd.c (new)
> + if (!s->pcm->pcm_params[stream_id]) {
> + s->pcm->pcm_params[stream_id] = g_new0(VirtIOSoundPCMParams, 1);
> + }
> -+ VirtIOSoundPCMParams *st_params = virtio_snd_pcm_get_params(s, stream_id);
> ++ st_params = virtio_snd_pcm_get_params(s, stream_id);
> +
> + st_params->features = params->features;
> + st_params->buffer_bytes = params->buffer_bytes;
> @@ hw/virtio/virtio-snd.c (new)
> + }
> + st_params->channels = params->channels;
> +
> -+ uint32_t supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
> -+ | 1 << VIRTIO_SND_PCM_FMT_U8
> -+ | 1 << VIRTIO_SND_PCM_FMT_S16
> -+ | 1 << VIRTIO_SND_PCM_FMT_U16
> -+ | 1 << VIRTIO_SND_PCM_FMT_S32
> -+ | 1 << VIRTIO_SND_PCM_FMT_U32
> -+ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
> -+
> -+ uint32_t supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
> -+ | 1 << VIRTIO_SND_PCM_RATE_8000
> -+ | 1 << VIRTIO_SND_PCM_RATE_11025
> -+ | 1 << VIRTIO_SND_PCM_RATE_16000
> -+ | 1 << VIRTIO_SND_PCM_RATE_22050
> -+ | 1 << VIRTIO_SND_PCM_RATE_32000
> -+ | 1 << VIRTIO_SND_PCM_RATE_44100
> -+ | 1 << VIRTIO_SND_PCM_RATE_48000
> -+ | 1 << VIRTIO_SND_PCM_RATE_64000
> -+ | 1 << VIRTIO_SND_PCM_RATE_88200
> -+ | 1 << VIRTIO_SND_PCM_RATE_96000
> -+ | 1 << VIRTIO_SND_PCM_RATE_176400
> -+ | 1 << VIRTIO_SND_PCM_RATE_192000
> -+ | 1 << VIRTIO_SND_PCM_RATE_384000;
> ++ supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
> ++ | 1 << VIRTIO_SND_PCM_FMT_U8
> ++ | 1 << VIRTIO_SND_PCM_FMT_S16
> ++ | 1 << VIRTIO_SND_PCM_FMT_U16
> ++ | 1 << VIRTIO_SND_PCM_FMT_S32
> ++ | 1 << VIRTIO_SND_PCM_FMT_U32
> ++ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
> ++
> ++ supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
> ++ | 1 << VIRTIO_SND_PCM_RATE_8000
> ++ | 1 << VIRTIO_SND_PCM_RATE_11025
> ++ | 1 << VIRTIO_SND_PCM_RATE_16000
> ++ | 1 << VIRTIO_SND_PCM_RATE_22050
> ++ | 1 << VIRTIO_SND_PCM_RATE_32000
> ++ | 1 << VIRTIO_SND_PCM_RATE_44100
> ++ | 1 << VIRTIO_SND_PCM_RATE_48000
> ++ | 1 << VIRTIO_SND_PCM_RATE_64000
> ++ | 1 << VIRTIO_SND_PCM_RATE_88200
> ++ | 1 << VIRTIO_SND_PCM_RATE_96000
> ++ | 1 << VIRTIO_SND_PCM_RATE_176400
> ++ | 1 << VIRTIO_SND_PCM_RATE_192000
> ++ | 1 << VIRTIO_SND_PCM_RATE_384000;
> +
> + if (!(supported_formats & (1 << params->format))) {
> + error_report("Stream format is not supported.");
> @@ hw/virtio/virtio-snd.c (new)
> + st_params->rate = params->rate;
> + st_params->period_bytes = params->period_bytes;
> + st_params->buffer_bytes = params->buffer_bytes;
> ++
> + return VIRTIO_SND_S_OK;
> +}
> +
> @@ hw/virtio/virtio-snd.c (new)
> +{
> + virtio_snd_pcm_set_params req;
> + uint32_t sz;
> ++
> + sz = iov_to_buf(cmd->elem->out_sg,
> + cmd->elem->out_num,
> + 0,
> @@ hw/virtio/virtio-snd.c (new)
> +
> + trace_virtio_snd_handle_pcm_set_params(req.hdr.stream_id);
> + cmd->resp.code = virtio_snd_pcm_set_params_impl(s, &req);
> ++
> + return;
> +}
> +
> @@ hw/virtio/virtio-snd.c (new)
> +static void virtio_snd_get_qemu_audsettings(audsettings *as,
> + VirtIOSoundPCMParams *params)
> +{
> -+ as->nchannels = params->channels;
> ++ as->nchannels = MIN(AUDIO_MAX_CHANNELS, params->channels);
> + as->fmt = virtio_snd_get_qemu_format(params->format);
> + as->freq = virtio_snd_get_qemu_freq(params->rate);
> + as->endianness = AUDIO_HOST_ENDIANNESS;
> @@ hw/virtio/virtio-snd.c (new)
> + */
> +static uint32_t virtio_snd_pcm_prepare_impl(VirtIOSound *s, uint32_t stream_id)
> +{
> ++ audsettings as;
> ++ uint32_t supported_formats, supported_rates;
> ++ VirtIOSoundPCMParams *params;
> ++ VirtIOSoundPCMStream *stream;
> ++
> + if (!s->pcm->streams
> + || !s->pcm->pcm_params
> + || !s->pcm->pcm_params[stream_id]) {
> + return VIRTIO_SND_S_BAD_MSG;
> + }
> +
> -+ uint32_t supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
> -+ | 1 << VIRTIO_SND_PCM_FMT_U8
> -+ | 1 << VIRTIO_SND_PCM_FMT_S16
> -+ | 1 << VIRTIO_SND_PCM_FMT_U16
> -+ | 1 << VIRTIO_SND_PCM_FMT_S32
> -+ | 1 << VIRTIO_SND_PCM_FMT_U32
> -+ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
> -+
> -+ uint32_t supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
> -+ | 1 << VIRTIO_SND_PCM_RATE_8000
> -+ | 1 << VIRTIO_SND_PCM_RATE_11025
> -+ | 1 << VIRTIO_SND_PCM_RATE_16000
> -+ | 1 << VIRTIO_SND_PCM_RATE_22050
> -+ | 1 << VIRTIO_SND_PCM_RATE_32000
> -+ | 1 << VIRTIO_SND_PCM_RATE_44100
> -+ | 1 << VIRTIO_SND_PCM_RATE_48000
> -+ | 1 << VIRTIO_SND_PCM_RATE_64000
> -+ | 1 << VIRTIO_SND_PCM_RATE_88200
> -+ | 1 << VIRTIO_SND_PCM_RATE_96000
> -+ | 1 << VIRTIO_SND_PCM_RATE_176400
> -+ | 1 << VIRTIO_SND_PCM_RATE_192000
> -+ | 1 << VIRTIO_SND_PCM_RATE_384000;
> -+
> -+ VirtIOSoundPCMParams *params = virtio_snd_pcm_get_params(s, stream_id);
> ++ supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
> ++ | 1 << VIRTIO_SND_PCM_FMT_U8
> ++ | 1 << VIRTIO_SND_PCM_FMT_S16
> ++ | 1 << VIRTIO_SND_PCM_FMT_U16
> ++ | 1 << VIRTIO_SND_PCM_FMT_S32
> ++ | 1 << VIRTIO_SND_PCM_FMT_U32
> ++ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
> ++
> ++ supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
> ++ | 1 << VIRTIO_SND_PCM_RATE_8000
> ++ | 1 << VIRTIO_SND_PCM_RATE_11025
> ++ | 1 << VIRTIO_SND_PCM_RATE_16000
> ++ | 1 << VIRTIO_SND_PCM_RATE_22050
> ++ | 1 << VIRTIO_SND_PCM_RATE_32000
> ++ | 1 << VIRTIO_SND_PCM_RATE_44100
> ++ | 1 << VIRTIO_SND_PCM_RATE_48000
> ++ | 1 << VIRTIO_SND_PCM_RATE_64000
> ++ | 1 << VIRTIO_SND_PCM_RATE_88200
> ++ | 1 << VIRTIO_SND_PCM_RATE_96000
> ++ | 1 << VIRTIO_SND_PCM_RATE_176400
> ++ | 1 << VIRTIO_SND_PCM_RATE_192000
> ++ | 1 << VIRTIO_SND_PCM_RATE_384000;
> ++
> ++ params = virtio_snd_pcm_get_params(s, stream_id);
> + assert(params);
> +
> -+ VirtIOSoundPCMStream *stream = g_new0(VirtIOSoundPCMStream, 1);
> ++ virtio_snd_get_qemu_audsettings(&as, params);
> ++
> ++ stream = g_new0(VirtIOSoundPCMStream, 1);
> +
> ++ stream->id = stream_id;
> + stream->pcm = s->pcm;
> + stream->direction = stream_id < s->snd_conf.streams / 2 +
> + (s->snd_conf.streams & 1) ? VIRTIO_SND_D_OUTPUT : VIRTIO_SND_D_INPUT;
> -+ stream->info.hdr.hda_fn_nid = stream->direction == VIRTIO_SND_D_OUTPUT ?
> -+ VIRTIO_SOUND_HDA_FN_NID_OUT : VIRTIO_SOUND_HDA_FN_NID_IN;
> ++ stream->info.hdr.hda_fn_nid = VIRTIO_SOUND_HDA_FN_NID;
> + stream->features = 0;
> + stream->channels_min = 1;
> -+ stream->channels_max = AUDIO_MAX_CHANNELS;
> ++ stream->channels_max = as.nchannels;
> + stream->formats = supported_formats;
> + stream->rates = supported_rates;
> + stream->s = s;
> @@ hw/virtio/virtio-snd.c (new)
> + stream->positions[0] = VIRTIO_SND_CHMAP_FL;
> + stream->positions[1] = VIRTIO_SND_CHMAP_FR;
> +
> -+ audsettings as;
> -+ virtio_snd_get_qemu_audsettings(&as, params);
> +
> + if (stream->direction == VIRTIO_SND_D_OUTPUT) {
> + stream->voice.out = AUD_open_out(&s->card,
> @@ hw/virtio/virtio-snd.c (new)
> + stream->desired_as = stream->as;
> + qemu_mutex_init(&stream->queue_mutex);
> + QSIMPLEQ_INIT(&stream->queue);
> ++
> + s->pcm->streams[stream_id] = stream;
> +
> + return VIRTIO_SND_S_OK;
> @@ hw/virtio/virtio-snd.c (new)
> + virtio_snd_ctrl_command *cmd,
> + bool start)
> +{
> ++ VirtIOSoundPCMStream *stream;
> + virtio_snd_pcm_hdr req;
> + size_t sz;
> +
> @@ hw/virtio/virtio-snd.c (new)
> + trace_virtio_snd_handle_pcm_start_stop(start ? "VIRTIO_SND_R_PCM_START" :
> + "VIRTIO_SND_R_PCM_STOP", req.stream_id);
> +
> -+ VirtIOSoundPCMStream *stream = virtio_snd_pcm_get_stream(s, req.stream_id);
> ++ stream = virtio_snd_pcm_get_stream(s, req.stream_id);
> +
> + if (stream) {
> + if (stream->direction == VIRTIO_SND_D_OUTPUT) {
> @@ hw/virtio/virtio-snd.c (new)
> +}
> +
> +/*
> -+ * Releases the resources allocated to a stream. Seperated from the handler
> -+ * so that the code can be reused in the unrealize function.
> -+ * Returns the response status code. (VIRTIO_SND_S_*).
> ++ * Releases the buffer resources allocated to a stream. Seperated from the
> ++ * handler so that the code can be reused in the unrealize function. Returns
> ++ * the response status code. (VIRTIO_SND_S_*).
> + *
> + * @stream: VirtIOSoundPCMStream stream
> + * @stream_id: stream id
> @@ hw/virtio/virtio-snd.c (new)
> +static uint32_t virtio_snd_pcm_release_impl(VirtIOSoundPCMStream *stream,
> + uint32_t stream_id)
> +{
> ++ assert(stream->s->pcm->streams[stream_id] == stream);
> ++
> + if (virtio_snd_pcm_get_pending_bytes(stream)) {
> + /*
> + * virtio-v1.2-csd01, 5.14.6.6.5.1,
> @@ hw/virtio/virtio-snd.c (new)
> + virtio_snd_pcm_flush(stream);
> + }
> +
> -+ if (stream->direction == VIRTIO_SND_D_OUTPUT) {
> -+ AUD_close_out(&stream->s->card, stream->voice.out);
> -+ } else {
> -+ AUD_close_in(&stream->s->card, stream->voice.in);
> -+ }
> -+
> -+ assert(stream->s->pcm->streams[stream_id] == stream);
> -+
> + return VIRTIO_SND_S_OK;
> +}
> +
> @@ hw/virtio/virtio-snd.c (new)
> +{
> + uint32_t stream_id;
> + size_t sz;
> ++ VirtIOSoundPCMStream *stream;
> +
> + sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num,
> + sizeof(virtio_snd_hdr), &stream_id, sizeof(stream_id));
> @@ hw/virtio/virtio-snd.c (new)
> +
> + trace_virtio_snd_handle_pcm_release(stream_id);
> +
> -+ VirtIOSoundPCMStream *stream = virtio_snd_pcm_get_stream(s, stream_id);
> ++ stream = virtio_snd_pcm_get_stream(s, stream_id);
> + if (!stream) {
> + error_report("already released stream %d", stream_id);
> + virtio_error(VIRTIO_DEVICE(s), "already released stream %d", stream_id);
> @@ hw/virtio/virtio-snd.c (new)
> +
> + switch (cmd->ctrl.code) {
> + case VIRTIO_SND_R_JACK_INFO:
> -+ /*
> -+ * Unimplemented
> -+ * virtio_snd_handle_jack_info(s, cmd);
> -+ */
> -+ break;
> + case VIRTIO_SND_R_JACK_REMAP:
> -+ /*
> -+ * Unimplemented
> -+ * virtio_snd_handle_jack_remap(s, cmd);
> -+ */
> ++ qemu_log_mask(LOG_UNIMP,
> ++ "virtio_snd: jack functionality is unimplemented.");
> + break;
> + case VIRTIO_SND_R_PCM_INFO:
> + virtio_snd_handle_pcm_info(s, cmd);
> @@ hw/virtio/virtio-snd.c (new)
> + virtio_snd_handle_pcm_release(s, cmd);
> + break;
> + case VIRTIO_SND_R_CHMAP_INFO:
> ++ qemu_log_mask(LOG_UNIMP,
> ++ "virtio_snd: chmap info functionality is unimplemented.");
> + trace_virtio_snd_handle_chmap_info();
> + break;
> + default:
> @@ hw/virtio/virtio-snd.c (new)
> + */
> +static void virtio_snd_handle_event(VirtIODevice *vdev, VirtQueue *vq)
> +{
> ++ qemu_log_mask(LOG_UNIMP, "virtio_snd: event queue is unimplemented.");
> + trace_virtio_snd_handle_event();
> +}
> +
> @@ hw/virtio/virtio-snd.c (new)
> + VirtQueueElement *elem;
> + size_t sz;
> + virtio_snd_pcm_xfer hdr;
> ++ virtio_snd_pcm_status resp = { 0 };
> +
> + trace_virtio_snd_handle_xfer();
> +
> @@ hw/virtio/virtio-snd.c (new)
> + elem,
> + hdr.stream_id == VIRTIO_SND_D_INPUT);
> +
> -+ virtio_snd_pcm_status resp = { 0 };
> + resp.status = VIRTIO_SND_S_OK;
> + sz = iov_from_buf(elem->in_sg,
> + elem->in_num,
> @@ hw/virtio/virtio-snd.c (new)
> + VirtIOSoundPCMStream *stream = data;
> + VirtIOSoundPCMBlock *block;
> + VirtIOSoundPCMBlock *next;
> ++ int size;
> +
> + WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
> + QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
> -+ int size = MIN(block->size, available);
> -+
> + for (;;) {
> ++ size = MIN(block->size, available);
> + size = AUD_write(stream->voice.out,
> + block->data + block->offset,
> + size);
> @@ hw/virtio/virtio-snd.c (new)
> + sizeof(block->elem));
> + virtio_notify(VIRTIO_DEVICE(stream->s),
> + block->vq);
> -+ QSIMPLEQ_REMOVE(&stream->queue,
> -+ block,
> -+ VirtIOSoundPCMBlock,
> -+ entry);
> ++ QSIMPLEQ_REMOVE_HEAD(&stream->queue, entry);
> ++ g_free(block);
> + available -= size;
> + break;
> + }
> @@ hw/virtio/virtio-snd.c (new)
> +{
> + VirtIODevice *vdev = VIRTIO_DEVICE(dev);
> + VirtIOSound *vsnd = VIRTIO_SND(dev);
> ++ VirtIOSoundPCMStream *stream;
> +
> + qemu_del_vm_change_state_handler(vsnd->vmstate);
> + virtio_del_queue(vdev, 0);
> @@ hw/virtio/virtio-snd.c (new)
> + trace_virtio_snd_unrealize(vsnd);
> +
> + for (int i = VIRTIO_SND_D_OUTPUT; i <= VIRTIO_SND_D_INPUT; i++) {
> -+ VirtIOSoundPCMStream *stream = vsnd->pcm->streams[i];
> -+
> ++ stream = vsnd->pcm->streams[i];
> + virtio_snd_pcm_close(stream);
> -+
> + g_free(stream);
> + }
> +
> @@ hw/virtio/virtio-snd.c (new)
> + sizeof(virtio_snd_pcm_xfer);
> + assert(size <= stream->period_bytes);
> +
> -+ trace_virtio_snd_handle_xfer_elem(read ? "read" : "write");
> -+
> -+ fragment = g_malloc(sizeof(VirtIOSoundPCMBlock) + size);
> ++ fragment = g_malloc0(sizeof(VirtIOSoundPCMBlock) + size);
> + fragment->elem = element;
> + fragment->vq = vq;
> + fragment->size = size;
> @@ hw/virtio/virtio-snd.c (new)
> +
> +type_init(virtio_snd_register);
>
> - ## include/hw/pci/pci.h ##
> -@@ include/hw/pci/pci.h: extern bool pci_available;
> - #define PCI_DEVICE_ID_VIRTIO_RNG 0x1005
> - #define PCI_DEVICE_ID_VIRTIO_9P 0x1009
> - #define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012
> -+#define PCI_DEVICE_ID_VIRTIO_SND 0x1019
> -
> - /*
> - * modern virtio-pci devices get their id assigned automatically,
> -
> ## include/hw/virtio/virtio-snd.h (new) ##
> @@
> +/*
> @@ include/hw/virtio/virtio-snd.h (new)
> +typedef struct VirtIOSoundPCMStream {
> + VirtIOSoundPCM *pcm;
> + struct virtio_snd_pcm_info info;
> ++ uint32_t id;
> + uint32_t buffer_bytes;
> + uint32_t period_bytes;
> + /* channel position values (VIRTIO_SND_CHMAP_XXX) */
> @@ include/hw/virtio/virtio-snd.h (new)
> + }
> +};
> +#endif
> -
> - ## softmmu/qdev-monitor.c ##
> -@@ softmmu/qdev-monitor.c: static const QDevAlias qdev_alias_table[] = {
> - { "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO },
> - { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW },
> - { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI},
> -+ { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI},
> - { "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO },
> - { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW },
> - { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI },
>-: ---------- > 2: db527bc9a1 Add virtio-sound-pci device
>-: ---------- > 3: 4c130f066d Implement audio capture in virtio-snd device
>--
>2.39.2
>
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [PATCH v2 0/3] Add VIRTIO sound card
2023-07-13 11:00 ` [PATCH v2 0/3] Add VIRTIO sound card Manos Pitsidianakis
@ 2023-07-16 17:18 ` Philippe Mathieu-Daudé
0 siblings, 0 replies; 8+ messages in thread
From: Philippe Mathieu-Daudé @ 2023-07-16 17:18 UTC (permalink / raw)
To: Manos Pitsidianakis, qemu-devel
Cc: Igor Skalkin, Anton Yakovlev, Paolo Bonzini, Gerd Hoffmann,
Michael S. Tsirkin, Marcel Apfelbaum, Daniel P. Berrangé,
Eduardo Habkost, Marc-André Lureau, Volker Rümelin,
Kővágó, Zoltán
Cc'ing more contributors involved with audio in general.
On 13/7/23 13:00, Manos Pitsidianakis wrote:
> Ping
>
> Patch series on patchew:
> https://patchew.org/QEMU/cover.1686238728.git.manos.pitsidianakis@linaro.org/
>
> Patch series on lore:
> https://lore.kernel.org/qemu-devel/cover.1686238728.git.manos.pitsidianakis@linaro.org/
>
>
> On Thu, 08 Jun 2023 18:56, Manos Pitsidianakis
> <manos.pitsidianakis@linaro.org> wrote:
>> This patch series adds an audio device implementing the recent virtio
>> sound spec (1.2) and a corresponding PCI wrapper device.
>>
>> Main differences with v1 patch
>> <20230526204845.673031-1-manos.pitsidianakis@linaro.org>:
>>
>> - Split virtio-snd and virtio-snd-pci devices to two commits
>> - Added audio capture support
>>
>> Known problems (On pipewire at least):
>>
>> - Stereo recording results in one channel with the recording + a
>> ticking kind of artifact and one channel that has no artifacts, just
>> the recording.
>>
>> Manos Pitsidianakis (3):
>> Add virtio-sound device
>> Add virtio-sound-pci device
>> Implement audio capture in virtio-snd device
>>
>> MAINTAINERS | 6 +
>> hw/virtio/Kconfig | 5 +
>> hw/virtio/meson.build | 2 +
>> hw/virtio/trace-events | 22 +
>> hw/virtio/virtio-snd-pci.c | 102 +++
>> hw/virtio/virtio-snd.c | 1290 ++++++++++++++++++++++++++++++++
>> include/hw/pci/pci.h | 1 +
>> include/hw/virtio/virtio-snd.h | 194 +++++
>> softmmu/qdev-monitor.c | 1 +
>> 9 files changed, 1623 insertions(+)
>> create mode 100644 hw/virtio/virtio-snd-pci.c
>> create mode 100644 hw/virtio/virtio-snd.c
>> create mode 100644 include/hw/virtio/virtio-snd.h
>>
>> Range-diff against v1:
>> 1: 652c7d2d01 ! 1: 95d564fc1f Add virtio-sound and virtio-sound-pci
>> devices
>> @@ Metadata
>> Author: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
>> ## Commit message ##
>> - Add virtio-sound and virtio-sound-pci devices
>> + Add virtio-sound device
>> This patch adds an audio device implementing the recent virtio
>> sound
>> - spec (1.2) and a corresponding PCI wrapper device.
>> + spec (1.2).
>> PCM functionality is implemented, and jack[0], chmaps[1]
>> messages are
>> - at the moment ignored.
>> -
>> - To test this, you'll need a >6.0 kernel compiled with the
>> virtio-snd
>> - flag enabled, which distros have off by default.
>> -
>> - Use with following flags in the invocation:
>> -
>> - -device virtio-sound-pci,disable-legacy=on
>> -
>> - And an audio backend listed with `-audio driver=help` that
>> works on
>> - your host machine, e.g.:
>> -
>> - Pulseaudio:
>> - -audio
>> driver=pa,model=virtio-sound,server=/run/user/1000/pulse/native
>> - sdl:
>> - -audio driver=sdl,model=virtio-sound
>> - coreaudio:
>> - -audio driver=coreaudio,model=virtio-sound
>> - etc.
>> -
>> - You can use speaker-test from alsa-tools to play noise, sines, or
>> - WAV files.
>> + at the moment left unimplemented.
>> PS2: This patch was based on a draft patch posted by
>> OpenSynergy in 2019. [2]
>> @@ Commit message
>> Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
>> Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
>> + ## MAINTAINERS ##
>> +@@ MAINTAINERS: F: hw/virtio/virtio-mem-pci.h
>> + F: hw/virtio/virtio-mem-pci.c
>> + F: include/hw/virtio/virtio-mem.h
>> + ++virtio-snd
>> ++M: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
>> ++S: Supported
>> ++F: hw/virtio/virtio-snd*.c
>> ++F: include/hw/virtio/virtio-snd.h
>> ++
>> + nvme
>> + M: Keith Busch <kbusch@kernel.org>
>> + M: Klaus Jensen <its@irrelevant.dk>
>> +
>> ## hw/virtio/Kconfig ##
>> @@ hw/virtio/Kconfig: config VIRTIO_PCI
>> depends on PCI
>> @@ hw/virtio/Kconfig: config VIRTIO_PCI
>> select VIRTIO
>> ## hw/virtio/meson.build ##
>> -@@ hw/virtio/meson.build: virtio_pci_ss.add(when:
>> 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-serial-pc
>> - virtio_pci_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true:
>> files('virtio-pmem-pci.c'))
>> - virtio_pci_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true:
>> files('virtio-iommu-pci.c'))
>> - virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true:
>> files('virtio-mem-pci.c'))
>> -+virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SND', if_true:
>> files('virtio-snd-pci.c'))
>> - virtio_pci_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true:
>> files('vdpa-dev-pci.c'))
>> - - specific_virtio_ss.add_all(when: 'CONFIG_VIRTIO_PCI',
>> if_true: virtio_pci_ss)
>> @@ hw/virtio/meson.build: softmmu_ss.add(when: 'CONFIG_VIRTIO',
>> if_false: files('virtio-stub.c'))
>> softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('vhost-stub.c'))
>> softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('virtio-stub.c'))
>> @@ hw/virtio/trace-events: virtio_pmem_flush_done(int type) "fsync
>> return=%d"
>> +virtio_snd_handle_pcm_info(int stream) "VIRTIO_SND_R_PCM_INFO
>> called for stream %d"
>> +virtio_snd_handle_pcm_set_params(int stream)
>> "VIRTIO_SND_PCM_SET_PARAMS called for stream %d"
>> +virtio_snd_handle_pcm_start_stop(const char *code, int stream)
>> "%s called for stream %d"
>> -+virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE
>> called for stream %id"
>> ++virtio_snd_handle_pcm_release(int stream) "VIRTIO_SND_PCM_RELEASE
>> called for stream %d"
>> +virtio_snd_handle_chmap_info(void) "VIRTIO_SND_CHMAP_INFO called"
>> +virtio_snd_handle_xfer(void) "tx/rx queue callback called"
>> -+virtio_snd_handle_xfer_elem(const char * k) "xfer handled in
>> virtio_snd_pcm_%s"
>> +virtio_snd_handle_event(void) "event queue callback called"
>> -+virtio_snd_cpu_is_stopped(void *snd, int size) "snd %p: cpu is
>> stopped, dropping %d bytes"
>> +virtio_snd_realize(void *snd) "snd %p: realize"
>> -+virtio_snd_unrealize(void *snd) "snd %p: realize"
>> ++virtio_snd_unrealize(void *snd) "snd %p: unrealize"
>> +virtio_snd_get_features(void *vdev, uint64_t features) "snd %p:
>> get_features 0x%"PRIx64
>> +virtio_snd_get_config(void *vdev, uint32_t jacks, uint32_t
>> streams, uint32_t chmaps) "snd %p: get_config jacks=%d streams=%d
>> chmaps=%d"
>> +virtio_snd_set_config(void *vdev, uint32_t jacks, uint32_t
>> new_jacks, uint32_t streams, uint32_t new_streams, uint32_t chmaps,
>> uint32_t new_chmaps) "snd %p: set_config jacks from %d->%d, streams
>> from %d->%d, chmaps from %d->%d"
>> @@ hw/virtio/trace-events: virtio_pmem_flush_done(int type) "fsync
>> return=%d"
>> +virtio_snd_vm_state_stopped(void) "vm state stopped"
>> +virtio_snd_handle_code(int val, const char *code) "ctrl code msg
>> val = %d == %s"
>> - ## hw/virtio/virtio-snd-pci.c (new) ##
>> -@@
>> -+/*
>> -+ * VIRTIO Sound Device PCI Bindings
>> -+ *
>> -+ * Copyright (c) 2023 Emmanouil Pitsidianakis
>> <manos.pitsidianakis@linaro.org>
>> -+ *
>> -+ * This work is licensed under the terms of the GNU GPL, version
>> 2 or
>> -+ * (at your option) any later version. See the COPYING file in the
>> -+ * top-level directory.
>> -+ */
>> -+
>> -+#include "qemu/osdep.h"
>> -+#include "hw/audio/soundhw.h"
>> -+#include "hw/virtio/virtio-pci.h"
>> -+#include "hw/virtio/virtio-snd.h"
>> -+
>> -+typedef struct VirtIOSoundPCI VirtIOSoundPCI;
>> -+
>> -+/*
>> -+ * virtio-snd-pci: This extends VirtioPCIProxy.
>> -+ */
>> -+#define TYPE_VIRTIO_SND_PCI "virtio-sound-pci-base"
>> -+DECLARE_INSTANCE_CHECKER(VirtIOSoundPCI, VIRTIO_SOUND_PCI,
>> -+ TYPE_VIRTIO_SND_PCI)
>> -+
>> -+struct VirtIOSoundPCI {
>> -+ VirtIOPCIProxy parent;
>> -+ VirtIOSound vdev;
>> -+};
>> -+
>> -+static Property virtio_snd_pci_properties[] = {
>> -+ DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
>> -+ DEFINE_PROP_END_OF_LIST(),
>> -+};
>> -+
>> -+static const char *audiodev_id;
>> -+
>> -+static int virtio_snd_init_pci(PCIBus *init_bus, const char
>> *audiodev)
>> -+{
>> -+ audiodev_id = audiodev;
>> -+ return 0;
>> -+}
>> -+
>> -+static void virtio_snd_pci_realize(VirtIOPCIProxy *vpci_dev,
>> Error **errp)
>> -+{
>> -+ VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(vpci_dev);
>> -+ DeviceState *vdev = DEVICE(&dev->vdev);
>> -+ VirtIOSound *vsnd = VIRTIO_SND(&dev->vdev);
>> -+
>> -+ /*
>> -+ * According to spec, non-legacy virtio PCI devices are
>> always little
>> -+ * endian
>> -+ */
>> -+ vsnd->virtio_access_is_big_endian = false;
>> -+
>> -+
>> -+ qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus), errp);
>> -+
>> -+
>> -+ qdev_prop_set_string(vdev, "audiodev", audiodev_id);
>> -+ AUD_register_card ("virtio-sound", &dev->vdev.card);
>> -+
>> -+ object_property_set_bool(OBJECT(vdev), "realized", true, errp);
>> -+}
>> -+
>> -+static void virtio_snd_pci_class_init(ObjectClass *klass, void
>> *data)
>> -+{
>> -+ DeviceClass *dc = DEVICE_CLASS(klass);
>> -+ VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
>> -+ PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
>> -+
>> -+ vpciklass->realize = virtio_snd_pci_realize;
>> -+ set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
>> -+
>> -+ pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
>> -+ pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SND;
>> -+ pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
>> -+ pcidev_k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
>> -+ device_class_set_props(dc, virtio_snd_pci_properties);
>> -+}
>> -+
>> -+static void virtio_snd_pci_instance_init(Object *obj)
>> -+{
>> -+ VirtIOSoundPCI *dev = VIRTIO_SOUND_PCI(obj);
>> -+
>> -+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
>> -+ TYPE_VIRTIO_SND);
>> -+}
>> -+
>> -+static const VirtioPCIDeviceTypeInfo virtio_snd_pci_info = {
>> -+ .base_name = TYPE_VIRTIO_SND_PCI,
>> -+ .generic_name = "virtio-sound-pci",
>> -+ .instance_size = sizeof(VirtIOSoundPCI),
>> -+ .instance_init = virtio_snd_pci_instance_init,
>> -+ .class_init = virtio_snd_pci_class_init,
>> -+};
>> -+
>> -+static void virtio_snd_pci_register(void)
>> -+{
>> -+ virtio_pci_types_register(&virtio_snd_pci_info);
>> -+ pci_register_soundhw("virtio-sound", "Virtio Sound Device",
>> -+ virtio_snd_init_pci);
>> -+}
>> -+
>> -+type_init(virtio_snd_pci_register);
>> -
>> ## hw/virtio/virtio-snd.c (new) ##
>> @@
>> +/*
>> @@ hw/virtio/virtio-snd.c (new)
>> +#define VIRTIO_SOUND_STREAM_DEFAULT 1
>> +#define VIRTIO_SOUND_CHMAP_DEFAULT 0
>> +
>> -+#define VIRTIO_SOUND_HDA_FN_NID_OUT 0
>> -+#define VIRTIO_SOUND_HDA_FN_NID_IN 1
>> ++#define VIRTIO_SOUND_HDA_FN_NID 0
>> +
>> +static const VMStateDescription vmstate_virtio_snd_device = {
>> + .name = TYPE_VIRTIO_SND,
>> @@ hw/virtio/virtio-snd.c (new)
>> +uint32_t virtio_snd_pcm_set_params_impl(VirtIOSound *s,
>> + virtio_snd_pcm_set_params
>> *params)
>> +{
>> ++ uint32_t supported_formats, supported_rates;
>> ++ VirtIOSoundPCMParams *st_params;
>> + uint32_t stream_id = params->hdr.stream_id;
>> ++
>> + if (stream_id > s->snd_conf.streams || !(s->pcm->pcm_params)) {
>> + virtio_error(VIRTIO_DEVICE(s), "Streams have not been
>> initialized.\n");
>> + return VIRTIO_SND_S_BAD_MSG;
>> @@ hw/virtio/virtio-snd.c (new)
>> + if (!s->pcm->pcm_params[stream_id]) {
>> + s->pcm->pcm_params[stream_id] =
>> g_new0(VirtIOSoundPCMParams, 1);
>> + }
>> -+ VirtIOSoundPCMParams *st_params =
>> virtio_snd_pcm_get_params(s, stream_id);
>> ++ st_params = virtio_snd_pcm_get_params(s, stream_id);
>> +
>> + st_params->features = params->features;
>> + st_params->buffer_bytes = params->buffer_bytes;
>> @@ hw/virtio/virtio-snd.c (new)
>> + }
>> + st_params->channels = params->channels;
>> +
>> -+ uint32_t supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
>> -+ | 1 << VIRTIO_SND_PCM_FMT_U8
>> -+ | 1 << VIRTIO_SND_PCM_FMT_S16
>> -+ | 1 << VIRTIO_SND_PCM_FMT_U16
>> -+ | 1 << VIRTIO_SND_PCM_FMT_S32
>> -+ | 1 << VIRTIO_SND_PCM_FMT_U32
>> -+ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
>> -+
>> -+ uint32_t supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
>> -+ | 1 << VIRTIO_SND_PCM_RATE_8000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_11025
>> -+ | 1 << VIRTIO_SND_PCM_RATE_16000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_22050
>> -+ | 1 << VIRTIO_SND_PCM_RATE_32000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_44100
>> -+ | 1 << VIRTIO_SND_PCM_RATE_48000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_64000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_88200
>> -+ | 1 << VIRTIO_SND_PCM_RATE_96000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_176400
>> -+ | 1 << VIRTIO_SND_PCM_RATE_192000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_384000;
>> ++ supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
>> ++ | 1 << VIRTIO_SND_PCM_FMT_U8
>> ++ | 1 << VIRTIO_SND_PCM_FMT_S16
>> ++ | 1 << VIRTIO_SND_PCM_FMT_U16
>> ++ | 1 << VIRTIO_SND_PCM_FMT_S32
>> ++ | 1 << VIRTIO_SND_PCM_FMT_U32
>> ++ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
>> ++
>> ++ supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
>> ++ | 1 << VIRTIO_SND_PCM_RATE_8000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_11025
>> ++ | 1 << VIRTIO_SND_PCM_RATE_16000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_22050
>> ++ | 1 << VIRTIO_SND_PCM_RATE_32000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_44100
>> ++ | 1 << VIRTIO_SND_PCM_RATE_48000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_64000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_88200
>> ++ | 1 << VIRTIO_SND_PCM_RATE_96000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_176400
>> ++ | 1 << VIRTIO_SND_PCM_RATE_192000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_384000;
>> +
>> + if (!(supported_formats & (1 << params->format))) {
>> + error_report("Stream format is not supported.");
>> @@ hw/virtio/virtio-snd.c (new)
>> + st_params->rate = params->rate;
>> + st_params->period_bytes = params->period_bytes;
>> + st_params->buffer_bytes = params->buffer_bytes;
>> ++
>> + return VIRTIO_SND_S_OK;
>> +}
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> +{
>> + virtio_snd_pcm_set_params req;
>> + uint32_t sz;
>> ++
>> + sz = iov_to_buf(cmd->elem->out_sg,
>> + cmd->elem->out_num,
>> + 0,
>> @@ hw/virtio/virtio-snd.c (new)
>> +
>> + trace_virtio_snd_handle_pcm_set_params(req.hdr.stream_id);
>> + cmd->resp.code = virtio_snd_pcm_set_params_impl(s, &req);
>> ++
>> + return;
>> +}
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> +static void virtio_snd_get_qemu_audsettings(audsettings *as,
>> + VirtIOSoundPCMParams
>> *params)
>> +{
>> -+ as->nchannels = params->channels;
>> ++ as->nchannels = MIN(AUDIO_MAX_CHANNELS, params->channels);
>> + as->fmt = virtio_snd_get_qemu_format(params->format);
>> + as->freq = virtio_snd_get_qemu_freq(params->rate);
>> + as->endianness = AUDIO_HOST_ENDIANNESS;
>> @@ hw/virtio/virtio-snd.c (new)
>> + */
>> +static uint32_t virtio_snd_pcm_prepare_impl(VirtIOSound *s,
>> uint32_t stream_id)
>> +{
>> ++ audsettings as;
>> ++ uint32_t supported_formats, supported_rates;
>> ++ VirtIOSoundPCMParams *params;
>> ++ VirtIOSoundPCMStream *stream;
>> ++
>> + if (!s->pcm->streams
>> + || !s->pcm->pcm_params
>> + || !s->pcm->pcm_params[stream_id]) {
>> + return VIRTIO_SND_S_BAD_MSG;
>> + }
>> +
>> -+ uint32_t supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
>> -+ | 1 << VIRTIO_SND_PCM_FMT_U8
>> -+ | 1 << VIRTIO_SND_PCM_FMT_S16
>> -+ | 1 << VIRTIO_SND_PCM_FMT_U16
>> -+ | 1 << VIRTIO_SND_PCM_FMT_S32
>> -+ | 1 << VIRTIO_SND_PCM_FMT_U32
>> -+ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
>> -+
>> -+ uint32_t supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
>> -+ | 1 << VIRTIO_SND_PCM_RATE_8000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_11025
>> -+ | 1 << VIRTIO_SND_PCM_RATE_16000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_22050
>> -+ | 1 << VIRTIO_SND_PCM_RATE_32000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_44100
>> -+ | 1 << VIRTIO_SND_PCM_RATE_48000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_64000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_88200
>> -+ | 1 << VIRTIO_SND_PCM_RATE_96000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_176400
>> -+ | 1 << VIRTIO_SND_PCM_RATE_192000
>> -+ | 1 << VIRTIO_SND_PCM_RATE_384000;
>> -+
>> -+ VirtIOSoundPCMParams *params = virtio_snd_pcm_get_params(s,
>> stream_id);
>> ++ supported_formats = 1 << VIRTIO_SND_PCM_FMT_S8
>> ++ | 1 << VIRTIO_SND_PCM_FMT_U8
>> ++ | 1 << VIRTIO_SND_PCM_FMT_S16
>> ++ | 1 << VIRTIO_SND_PCM_FMT_U16
>> ++ | 1 << VIRTIO_SND_PCM_FMT_S32
>> ++ | 1 << VIRTIO_SND_PCM_FMT_U32
>> ++ | 1 << VIRTIO_SND_PCM_FMT_FLOAT;
>> ++
>> ++ supported_rates = 1 << VIRTIO_SND_PCM_RATE_5512
>> ++ | 1 << VIRTIO_SND_PCM_RATE_8000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_11025
>> ++ | 1 << VIRTIO_SND_PCM_RATE_16000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_22050
>> ++ | 1 << VIRTIO_SND_PCM_RATE_32000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_44100
>> ++ | 1 << VIRTIO_SND_PCM_RATE_48000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_64000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_88200
>> ++ | 1 << VIRTIO_SND_PCM_RATE_96000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_176400
>> ++ | 1 << VIRTIO_SND_PCM_RATE_192000
>> ++ | 1 << VIRTIO_SND_PCM_RATE_384000;
>> ++
>> ++ params = virtio_snd_pcm_get_params(s, stream_id);
>> + assert(params);
>> +
>> -+ VirtIOSoundPCMStream *stream = g_new0(VirtIOSoundPCMStream, 1);
>> ++ virtio_snd_get_qemu_audsettings(&as, params);
>> ++
>> ++ stream = g_new0(VirtIOSoundPCMStream, 1);
>> +
>> ++ stream->id = stream_id;
>> + stream->pcm = s->pcm;
>> + stream->direction = stream_id < s->snd_conf.streams / 2 +
>> + (s->snd_conf.streams & 1) ? VIRTIO_SND_D_OUTPUT :
>> VIRTIO_SND_D_INPUT;
>> -+ stream->info.hdr.hda_fn_nid = stream->direction ==
>> VIRTIO_SND_D_OUTPUT ?
>> -+ VIRTIO_SOUND_HDA_FN_NID_OUT : VIRTIO_SOUND_HDA_FN_NID_IN;
>> ++ stream->info.hdr.hda_fn_nid = VIRTIO_SOUND_HDA_FN_NID;
>> + stream->features = 0;
>> + stream->channels_min = 1;
>> -+ stream->channels_max = AUDIO_MAX_CHANNELS;
>> ++ stream->channels_max = as.nchannels;
>> + stream->formats = supported_formats;
>> + stream->rates = supported_rates;
>> + stream->s = s;
>> @@ hw/virtio/virtio-snd.c (new)
>> + stream->positions[0] = VIRTIO_SND_CHMAP_FL;
>> + stream->positions[1] = VIRTIO_SND_CHMAP_FR;
>> +
>> -+ audsettings as;
>> -+ virtio_snd_get_qemu_audsettings(&as, params);
>> +
>> + if (stream->direction == VIRTIO_SND_D_OUTPUT) {
>> + stream->voice.out = AUD_open_out(&s->card,
>> @@ hw/virtio/virtio-snd.c (new)
>> + stream->desired_as = stream->as;
>> + qemu_mutex_init(&stream->queue_mutex);
>> + QSIMPLEQ_INIT(&stream->queue);
>> ++
>> + s->pcm->streams[stream_id] = stream;
>> +
>> + return VIRTIO_SND_S_OK;
>> @@ hw/virtio/virtio-snd.c (new)
>> +
>> virtio_snd_ctrl_command *cmd,
>> + bool start)
>> +{
>> ++ VirtIOSoundPCMStream *stream;
>> + virtio_snd_pcm_hdr req;
>> + size_t sz;
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> + trace_virtio_snd_handle_pcm_start_stop(start ?
>> "VIRTIO_SND_R_PCM_START" :
>> + "VIRTIO_SND_R_PCM_STOP", req.stream_id);
>> +
>> -+ VirtIOSoundPCMStream *stream = virtio_snd_pcm_get_stream(s,
>> req.stream_id);
>> ++ stream = virtio_snd_pcm_get_stream(s, req.stream_id);
>> +
>> + if (stream) {
>> + if (stream->direction == VIRTIO_SND_D_OUTPUT) {
>> @@ hw/virtio/virtio-snd.c (new)
>> +}
>> +
>> +/*
>> -+ * Releases the resources allocated to a stream. Seperated from
>> the handler
>> -+ * so that the code can be reused in the unrealize function.
>> -+ * Returns the response status code. (VIRTIO_SND_S_*).
>> ++ * Releases the buffer resources allocated to a stream. Seperated
>> from the
>> ++ * handler so that the code can be reused in the unrealize
>> function. Returns
>> ++ * the response status code. (VIRTIO_SND_S_*).
>> + *
>> + * @stream: VirtIOSoundPCMStream stream
>> + * @stream_id: stream id
>> @@ hw/virtio/virtio-snd.c (new)
>> +static uint32_t virtio_snd_pcm_release_impl(VirtIOSoundPCMStream
>> *stream,
>> + uint32_t stream_id)
>> +{
>> ++ assert(stream->s->pcm->streams[stream_id] == stream);
>> ++
>> + if (virtio_snd_pcm_get_pending_bytes(stream)) {
>> + /*
>> + * virtio-v1.2-csd01, 5.14.6.6.5.1,
>> @@ hw/virtio/virtio-snd.c (new)
>> + virtio_snd_pcm_flush(stream);
>> + }
>> +
>> -+ if (stream->direction == VIRTIO_SND_D_OUTPUT) {
>> -+ AUD_close_out(&stream->s->card, stream->voice.out);
>> -+ } else {
>> -+ AUD_close_in(&stream->s->card, stream->voice.in);
>> -+ }
>> -+
>> -+ assert(stream->s->pcm->streams[stream_id] == stream);
>> -+
>> + return VIRTIO_SND_S_OK;
>> +}
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> +{
>> + uint32_t stream_id;
>> + size_t sz;
>> ++ VirtIOSoundPCMStream *stream;
>> +
>> + sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num,
>> + sizeof(virtio_snd_hdr), &stream_id, sizeof(stream_id));
>> @@ hw/virtio/virtio-snd.c (new)
>> +
>> + trace_virtio_snd_handle_pcm_release(stream_id);
>> +
>> -+ VirtIOSoundPCMStream *stream = virtio_snd_pcm_get_stream(s,
>> stream_id);
>> ++ stream = virtio_snd_pcm_get_stream(s, stream_id);
>> + if (!stream) {
>> + error_report("already released stream %d", stream_id);
>> + virtio_error(VIRTIO_DEVICE(s), "already released stream
>> %d", stream_id);
>> @@ hw/virtio/virtio-snd.c (new)
>> +
>> + switch (cmd->ctrl.code) {
>> + case VIRTIO_SND_R_JACK_INFO:
>> -+ /*
>> -+ * Unimplemented
>> -+ * virtio_snd_handle_jack_info(s, cmd);
>> -+ */
>> -+ break;
>> + case VIRTIO_SND_R_JACK_REMAP:
>> -+ /*
>> -+ * Unimplemented
>> -+ * virtio_snd_handle_jack_remap(s, cmd);
>> -+ */
>> ++ qemu_log_mask(LOG_UNIMP,
>> ++ "virtio_snd: jack functionality is
>> unimplemented.");
>> + break;
>> + case VIRTIO_SND_R_PCM_INFO:
>> + virtio_snd_handle_pcm_info(s, cmd);
>> @@ hw/virtio/virtio-snd.c (new)
>> + virtio_snd_handle_pcm_release(s, cmd);
>> + break;
>> + case VIRTIO_SND_R_CHMAP_INFO:
>> ++ qemu_log_mask(LOG_UNIMP,
>> ++ "virtio_snd: chmap info functionality is
>> unimplemented.");
>> + trace_virtio_snd_handle_chmap_info();
>> + break;
>> + default:
>> @@ hw/virtio/virtio-snd.c (new)
>> + */
>> +static void virtio_snd_handle_event(VirtIODevice *vdev, VirtQueue
>> *vq)
>> +{
>> ++ qemu_log_mask(LOG_UNIMP, "virtio_snd: event queue is
>> unimplemented.");
>> + trace_virtio_snd_handle_event();
>> +}
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> + VirtQueueElement *elem;
>> + size_t sz;
>> + virtio_snd_pcm_xfer hdr;
>> ++ virtio_snd_pcm_status resp = { 0 };
>> +
>> + trace_virtio_snd_handle_xfer();
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> + elem,
>> + hdr.stream_id == VIRTIO_SND_D_INPUT);
>> +
>> -+ virtio_snd_pcm_status resp = { 0 };
>> + resp.status = VIRTIO_SND_S_OK;
>> + sz = iov_from_buf(elem->in_sg,
>> + elem->in_num,
>> @@ hw/virtio/virtio-snd.c (new)
>> + VirtIOSoundPCMStream *stream = data;
>> + VirtIOSoundPCMBlock *block;
>> + VirtIOSoundPCMBlock *next;
>> ++ int size;
>> +
>> + WITH_QEMU_LOCK_GUARD(&stream->queue_mutex) {
>> + QSIMPLEQ_FOREACH_SAFE(block, &stream->queue, entry, next) {
>> -+ int size = MIN(block->size, available);
>> -+
>> + for (;;) {
>> ++ size = MIN(block->size, available);
>> + size = AUD_write(stream->voice.out,
>> + block->data + block->offset,
>> + size);
>> @@ hw/virtio/virtio-snd.c (new)
>> + sizeof(block->elem));
>> + virtio_notify(VIRTIO_DEVICE(stream->s),
>> + block->vq);
>> -+ QSIMPLEQ_REMOVE(&stream->queue,
>> -+ block,
>> -+ VirtIOSoundPCMBlock,
>> -+ entry);
>> ++ QSIMPLEQ_REMOVE_HEAD(&stream->queue, entry);
>> ++ g_free(block);
>> + available -= size;
>> + break;
>> + }
>> @@ hw/virtio/virtio-snd.c (new)
>> +{
>> + VirtIODevice *vdev = VIRTIO_DEVICE(dev);
>> + VirtIOSound *vsnd = VIRTIO_SND(dev);
>> ++ VirtIOSoundPCMStream *stream;
>> +
>> + qemu_del_vm_change_state_handler(vsnd->vmstate);
>> + virtio_del_queue(vdev, 0);
>> @@ hw/virtio/virtio-snd.c (new)
>> + trace_virtio_snd_unrealize(vsnd);
>> +
>> + for (int i = VIRTIO_SND_D_OUTPUT; i <= VIRTIO_SND_D_INPUT;
>> i++) {
>> -+ VirtIOSoundPCMStream *stream = vsnd->pcm->streams[i];
>> -+
>> ++ stream = vsnd->pcm->streams[i];
>> + virtio_snd_pcm_close(stream);
>> -+
>> + g_free(stream);
>> + }
>> +
>> @@ hw/virtio/virtio-snd.c (new)
>> + sizeof(virtio_snd_pcm_xfer);
>> + assert(size <= stream->period_bytes);
>> +
>> -+ trace_virtio_snd_handle_xfer_elem(read ? "read" : "write");
>> -+
>> -+ fragment = g_malloc(sizeof(VirtIOSoundPCMBlock) + size);
>> ++ fragment = g_malloc0(sizeof(VirtIOSoundPCMBlock) + size);
>> + fragment->elem = element;
>> + fragment->vq = vq;
>> + fragment->size = size;
>> @@ hw/virtio/virtio-snd.c (new)
>> +
>> +type_init(virtio_snd_register);
>> - ## include/hw/pci/pci.h ##
>> -@@ include/hw/pci/pci.h: extern bool pci_available;
>> - #define PCI_DEVICE_ID_VIRTIO_RNG 0x1005
>> - #define PCI_DEVICE_ID_VIRTIO_9P 0x1009
>> - #define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012
>> -+#define PCI_DEVICE_ID_VIRTIO_SND 0x1019
>> - - /*
>> - * modern virtio-pci devices get their id assigned automatically,
>> -
>> ## include/hw/virtio/virtio-snd.h (new) ##
>> @@
>> +/*
>> @@ include/hw/virtio/virtio-snd.h (new)
>> +typedef struct VirtIOSoundPCMStream {
>> + VirtIOSoundPCM *pcm;
>> + struct virtio_snd_pcm_info info;
>> ++ uint32_t id;
>> + uint32_t buffer_bytes;
>> + uint32_t period_bytes;
>> + /* channel position values (VIRTIO_SND_CHMAP_XXX) */
>> @@ include/hw/virtio/virtio-snd.h (new)
>> + }
>> +};
>> +#endif
>> -
>> - ## softmmu/qdev-monitor.c ##
>> -@@ softmmu/qdev-monitor.c: static const QDevAlias
>> qdev_alias_table[] = {
>> - { "virtio-serial-device", "virtio-serial",
>> QEMU_ARCH_VIRTIO_MMIO },
>> - { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW },
>> - { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI},
>> -+ { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI},
>> - { "virtio-tablet-device", "virtio-tablet",
>> QEMU_ARCH_VIRTIO_MMIO },
>> - { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW },
>> - { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI },
>> -: ---------- > 2: db527bc9a1 Add virtio-sound-pci device
>> -: ---------- > 3: 4c130f066d Implement audio capture in virtio-snd
>> device
>> --
>> 2.39.2
>>
>
^ permalink raw reply [flat|nested] 8+ messages in thread