[00/12] ASoC: SOF DSP virtualisation

Message

Guennadi Liakhovetski March 20, 2020, 3:40 p.m. UTC

This patch series extends the SOF driver to add support for DSP
virtualisation to ASoC. It is built on top of VirtIO, contains a
guest driver and a vhost in-kernel guest driver. This version
supports a single playback and a single capture interface on the
guest. The specific guest audio topology is supplied by the host
from a file, specified on the QEMU command line. This solution is
designed to use advanced DSP functionality, available on the host.
In case no DSP is available on the host, a fall-back should be
provided in the future to the pure audio virtualisation standard,
currently developed by OASIS.

Extensive documentation is available at [1].

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>

v2: one patch merged, one patch resubmitted separately, otherwise 
no changes.

[1] https://thesofproject.github.io/latest/developer_guides/virtualization/virtualization.html

Guennadi Liakhovetski (12):
  ASoC: add function parameters to enable forced path pruning
  ASoC: SOF: extract firmware-related operation into a function
  ASoC: SOF: VirtIO: make a function global
  vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl
  ASoC: SOF: support IPC with immediate response
  ASoC: SOF: add a power status IPC
  ASoC: SOF: add two helper lookup functions
  ASoC: SOF: add a VirtIO DSP driver
  ASoC: SOF: add a vhost driver: sound part
  vhost: add an SOF DSP driver
  ASoC: SOF: VirtIO: free guest pipelines upon termination
  ASoC: SOF: VirtIO: enable simultaneous playback and capture

 drivers/vhost/Kconfig            |    7 +
 drivers/vhost/Makefile           |    5 +
 drivers/vhost/dsp.c              |  731 ++++++++++++++++++++++
 include/sound/soc-dpcm.h         |   28 +-
 include/sound/soc-topology.h     |    3 +
 include/sound/sof.h              |    4 +
 include/sound/sof/header.h       |    3 +
 include/sound/sof/topology.h     |    1 +
 include/sound/sof/virtio.h       |  206 +++++++
 include/uapi/linux/vhost.h       |    9 +-
 include/uapi/linux/vhost_types.h |    7 +
 include/uapi/linux/virtio_ids.h  |    1 +
 sound/soc/soc-compress.c         |    2 +-
 sound/soc/soc-dapm.c             |    8 +-
 sound/soc/soc-pcm.c              |   98 ++-
 sound/soc/sof/Kconfig            |    8 +
 sound/soc/sof/Makefile           |    8 +
 sound/soc/sof/core.c             |  114 ++--
 sound/soc/sof/ipc.c              |   39 +-
 sound/soc/sof/loader.c           |    4 +
 sound/soc/sof/ops.h              |   10 +-
 sound/soc/sof/pcm.c              |   15 +-
 sound/soc/sof/pm.c               |    4 +
 sound/soc/sof/sof-audio.c        |   33 +
 sound/soc/sof/sof-audio.h        |   21 +
 sound/soc/sof/sof-priv.h         |   54 ++
 sound/soc/sof/topology.c         |   71 ++-
 sound/soc/sof/vhost-be.c         | 1248 ++++++++++++++++++++++++++++++++++++++
 sound/soc/sof/virtio-fe.c        |  922 ++++++++++++++++++++++++++++
 29 files changed, 3555 insertions(+), 109 deletions(-)
 create mode 100644 drivers/vhost/dsp.c
 create mode 100644 include/sound/sof/virtio.h
 create mode 100644 sound/soc/sof/vhost-be.c
 create mode 100644 sound/soc/sof/virtio-fe.c