From: "Michael S. Tsirkin" <mst@redhat.com>
To: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jon Mason <jdmason@kudzu.us>, Dave Jiang <dave.jiang@intel.com>,
Allen Hubbe <allenbh@gmail.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Jason Wang <jasowang@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Stefano Garzarella <sgarzare@redhat.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-remoteproc@vger.kernel.org, linux-ntb@googlegroups.com,
linux-pci@vger.kernel.org, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org
Subject: Re: [RFC PATCH 00/22] Enhance VHOST to enable SoC-to-SoC communication
Date: Thu, 2 Jul 2020 05:51:29 -0400 [thread overview]
Message-ID: <20200702055026-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20200702082143.25259-1-kishon@ti.com>
On Thu, Jul 02, 2020 at 01:51:21PM +0530, Kishon Vijay Abraham I wrote:
> This series enhances Linux Vhost support to enable SoC-to-SoC
> communication over MMIO. This series enables rpmsg communication between
> two SoCs using both PCIe RC<->EP and HOST1-NTB-HOST2
>
> 1) Modify vhost to use standard Linux driver model
> 2) Add support in vring to access virtqueue over MMIO
> 3) Add vhost client driver for rpmsg
> 4) Add PCIe RC driver (uses virtio) and PCIe EP driver (uses vhost) for
> rpmsg communication between two SoCs connected to each other
> 5) Add NTB Virtio driver and NTB Vhost driver for rpmsg communication
> between two SoCs connected via NTB
> 6) Add configfs to configure the components
>
> UseCase1 :
>
> VHOST RPMSG VIRTIO RPMSG
> + +
> | |
> | |
> | |
> | |
> +-----v------+ +------v-------+
> | Linux | | Linux |
> | Endpoint | | Root Complex |
> | <-----------------> |
> | | | |
> | SOC1 | | SOC2 |
> +------------+ +--------------+
>
> UseCase 2:
>
> VHOST RPMSG VIRTIO RPMSG
> + +
> | |
> | |
> | |
> | |
> +------v------+ +------v------+
> | | | |
> | HOST1 | | HOST2 |
> | | | |
> +------^------+ +------^------+
> | |
> | |
> +---------------------------------------------------------------------+
> | +------v------+ +------v------+ |
> | | | | | |
> | | EP | | EP | |
> | | CONTROLLER1 | | CONTROLLER2 | |
> | | <-----------------------------------> | |
> | | | | | |
> | | | | | |
> | | | SoC With Multiple EP Instances | | |
> | | | (Configured using NTB Function) | | |
> | +-------------+ +-------------+ |
> +---------------------------------------------------------------------+
>
> Software Layering:
>
> The high-level SW layering should look something like below. This series
> adds support only for RPMSG VHOST, however something similar should be
> done for net and scsi. With that any vhost device (PCI, NTB, Platform
> device, user) can use any of the vhost client driver.
>
>
> +----------------+ +-----------+ +------------+ +----------+
> | RPMSG VHOST | | NET VHOST | | SCSI VHOST | | X |
> +-------^--------+ +-----^-----+ +-----^------+ +----^-----+
> | | | |
> | | | |
> | | | |
> +-----------v-----------------v--------------v--------------v----------+
> | VHOST CORE |
> +--------^---------------^--------------------^------------------^-----+
> | | | |
> | | | |
> | | | |
> +--------v-------+ +----v------+ +----------v----------+ +----v-----+
> | PCI EPF VHOST | | NTB VHOST | |PLATFORM DEVICE VHOST| | X |
> +----------------+ +-----------+ +---------------------+ +----------+
>
> This was initially proposed here [1]
>
> [1] -> https://lore.kernel.org/r/2cf00ec4-1ed6-f66e-6897-006d1a5b6390@ti.com
I find this very interesting. A huge patchset so will take a bit
to review, but I certainly plan to do that. Thanks!
>
> Kishon Vijay Abraham I (22):
> vhost: Make _feature_ bits a property of vhost device
> vhost: Introduce standard Linux driver model in VHOST
> vhost: Add ops for the VHOST driver to configure VHOST device
> vringh: Add helpers to access vring in MMIO
> vhost: Add MMIO helpers for operations on vhost virtqueue
> vhost: Introduce configfs entry for configuring VHOST
> virtio_pci: Use request_threaded_irq() instead of request_irq()
> rpmsg: virtio_rpmsg_bus: Disable receive virtqueue callback when
> reading messages
> rpmsg: Introduce configfs entry for configuring rpmsg
> rpmsg: virtio_rpmsg_bus: Add Address Service Notification support
> rpmsg: virtio_rpmsg_bus: Move generic rpmsg structure to
> rpmsg_internal.h
> virtio: Add ops to allocate and free buffer
> rpmsg: virtio_rpmsg_bus: Use virtio_alloc_buffer() and
> virtio_free_buffer()
> rpmsg: Add VHOST based remote processor messaging bus
> samples/rpmsg: Setup delayed work to send message
> samples/rpmsg: Wait for address to be bound to rpdev for sending
> message
> rpmsg.txt: Add Documentation to configure rpmsg using configfs
> virtio_pci: Add VIRTIO driver for VHOST on Configurable PCIe Endpoint
> device
> PCI: endpoint: Add EP function driver to provide VHOST interface
> NTB: Add a new NTB client driver to implement VIRTIO functionality
> NTB: Add a new NTB client driver to implement VHOST functionality
> NTB: Describe the ntb_virtio and ntb_vhost client in the documentation
>
> Documentation/driver-api/ntb.rst | 11 +
> Documentation/rpmsg.txt | 56 +
> drivers/ntb/Kconfig | 18 +
> drivers/ntb/Makefile | 2 +
> drivers/ntb/ntb_vhost.c | 776 +++++++++++
> drivers/ntb/ntb_virtio.c | 853 ++++++++++++
> drivers/ntb/ntb_virtio.h | 56 +
> drivers/pci/endpoint/functions/Kconfig | 11 +
> drivers/pci/endpoint/functions/Makefile | 1 +
> .../pci/endpoint/functions/pci-epf-vhost.c | 1144 ++++++++++++++++
> drivers/rpmsg/Kconfig | 10 +
> drivers/rpmsg/Makefile | 3 +-
> drivers/rpmsg/rpmsg_cfs.c | 394 ++++++
> drivers/rpmsg/rpmsg_core.c | 7 +
> drivers/rpmsg/rpmsg_internal.h | 136 ++
> drivers/rpmsg/vhost_rpmsg_bus.c | 1151 +++++++++++++++++
> drivers/rpmsg/virtio_rpmsg_bus.c | 184 ++-
> drivers/vhost/Kconfig | 1 +
> drivers/vhost/Makefile | 2 +-
> drivers/vhost/net.c | 10 +-
> drivers/vhost/scsi.c | 24 +-
> drivers/vhost/test.c | 17 +-
> drivers/vhost/vdpa.c | 2 +-
> drivers/vhost/vhost.c | 730 ++++++++++-
> drivers/vhost/vhost_cfs.c | 341 +++++
> drivers/vhost/vringh.c | 332 +++++
> drivers/vhost/vsock.c | 20 +-
> drivers/virtio/Kconfig | 9 +
> drivers/virtio/Makefile | 1 +
> drivers/virtio/virtio_pci_common.c | 25 +-
> drivers/virtio/virtio_pci_epf.c | 670 ++++++++++
> include/linux/mod_devicetable.h | 6 +
> include/linux/rpmsg.h | 6 +
> {drivers/vhost => include/linux}/vhost.h | 132 +-
> include/linux/virtio.h | 3 +
> include/linux/virtio_config.h | 42 +
> include/linux/vringh.h | 46 +
> samples/rpmsg/rpmsg_client_sample.c | 32 +-
> tools/virtio/virtio_test.c | 2 +-
> 39 files changed, 7083 insertions(+), 183 deletions(-)
> create mode 100644 drivers/ntb/ntb_vhost.c
> create mode 100644 drivers/ntb/ntb_virtio.c
> create mode 100644 drivers/ntb/ntb_virtio.h
> create mode 100644 drivers/pci/endpoint/functions/pci-epf-vhost.c
> create mode 100644 drivers/rpmsg/rpmsg_cfs.c
> create mode 100644 drivers/rpmsg/vhost_rpmsg_bus.c
> create mode 100644 drivers/vhost/vhost_cfs.c
> create mode 100644 drivers/virtio/virtio_pci_epf.c
> rename {drivers/vhost => include/linux}/vhost.h (66%)
>
> --
> 2.17.1
>
next prev parent reply other threads:[~2020-07-02 9:51 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 8:21 [RFC PATCH 00/22] Enhance VHOST to enable SoC-to-SoC communication Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 01/22] vhost: Make _feature_ bits a property of vhost device Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 02/22] vhost: Introduce standard Linux driver model in VHOST Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 03/22] vhost: Add ops for the VHOST driver to configure VHOST device Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 04/22] vringh: Add helpers to access vring in MMIO Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 05/22] vhost: Add MMIO helpers for operations on vhost virtqueue Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 06/22] vhost: Introduce configfs entry for configuring VHOST Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 07/22] virtio_pci: Use request_threaded_irq() instead of request_irq() Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 08/22] rpmsg: virtio_rpmsg_bus: Disable receive virtqueue callback when reading messages Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 09/22] rpmsg: Introduce configfs entry for configuring rpmsg Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 10/22] rpmsg: virtio_rpmsg_bus: Add Address Service Notification support Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 11/22] rpmsg: virtio_rpmsg_bus: Move generic rpmsg structure to rpmsg_internal.h Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 12/22] virtio: Add ops to allocate and free buffer Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 13/22] rpmsg: virtio_rpmsg_bus: Use virtio_alloc_buffer() and virtio_free_buffer() Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 14/22] rpmsg: Add VHOST based remote processor messaging bus Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 15/22] samples/rpmsg: Setup delayed work to send message Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 16/22] samples/rpmsg: Wait for address to be bound to rpdev for sending message Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 17/22] rpmsg.txt: Add Documentation to configure rpmsg using configfs Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 18/22] virtio_pci: Add VIRTIO driver for VHOST on Configurable PCIe Endpoint device Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 19/22] PCI: endpoint: Add EP function driver to provide VHOST interface Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 20/22] NTB: Add a new NTB client driver to implement VIRTIO functionality Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 21/22] NTB: Add a new NTB client driver to implement VHOST functionality Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 8:21 ` [RFC PATCH 22/22] NTB: Describe ntb_virtio and ntb_vhost client in the documentation Kishon Vijay Abraham I
2020-07-02 8:21 ` Kishon Vijay Abraham I
2020-07-02 9:51 ` Michael S. Tsirkin [this message]
2020-07-02 10:10 ` [RFC PATCH 00/22] Enhance VHOST to enable SoC-to-SoC communication Jason Wang
2020-07-02 13:35 ` Kishon Vijay Abraham I
2020-07-02 13:35 ` Kishon Vijay Abraham I
2020-07-03 7:16 ` Jason Wang
2020-07-03 7:16 ` Jason Wang
2020-07-06 9:32 ` Kishon Vijay Abraham I
2020-07-06 9:32 ` Kishon Vijay Abraham I
2020-07-07 9:47 ` Jason Wang
2020-07-07 9:47 ` Jason Wang
2020-07-07 14:45 ` Kishon Vijay Abraham I
2020-07-07 14:45 ` Kishon Vijay Abraham I
2020-07-08 11:22 ` Jason Wang
2020-07-08 13:13 ` Kishon Vijay Abraham I
2020-07-08 13:13 ` Kishon Vijay Abraham I
2020-07-09 6:26 ` Jason Wang
2020-08-28 10:34 ` Cornelia Huck
2020-08-28 10:34 ` Cornelia Huck
2020-09-01 5:24 ` Kishon Vijay Abraham I
2020-09-01 5:24 ` Kishon Vijay Abraham I
2020-09-01 8:50 ` Jason Wang
2020-09-01 8:50 ` Jason Wang
2020-09-08 16:37 ` Cornelia Huck
2020-09-08 16:37 ` Cornelia Huck
2020-09-09 8:41 ` Jason Wang
2020-09-09 8:41 ` Jason Wang
2020-09-14 7:23 ` Kishon Vijay Abraham I
2020-09-14 7:23 ` Kishon Vijay Abraham I
2020-09-15 8:18 ` Jason Wang
2020-09-15 8:18 ` Jason Wang
2020-09-15 15:47 ` Kishon Vijay Abraham I
2020-09-15 15:47 ` Kishon Vijay Abraham I
2020-09-16 3:10 ` Jason Wang
2020-09-16 3:10 ` Jason Wang
2020-09-16 11:47 ` Kishon Vijay Abraham I
2020-09-16 11:47 ` Kishon Vijay Abraham I
2020-09-16 11:47 ` Kishon Vijay Abraham I
2020-09-16 11:47 ` Kishon Vijay Abraham I
2020-09-18 4:04 ` Jason Wang
2020-09-18 4:04 ` Jason Wang
2020-07-15 17:15 ` Mathieu Poirier
2020-09-01 4:40 ` Kishon Vijay Abraham I
2020-09-01 4:40 ` Kishon Vijay Abraham I
2020-07-02 10:25 ` Kishon Vijay Abraham I
2020-07-02 10:25 ` Kishon Vijay Abraham I
2020-07-02 17:31 ` Mathieu Poirier
2020-07-02 17:31 ` Mathieu Poirier
2020-07-03 6:17 ` Kishon Vijay Abraham I
2020-07-03 6:17 ` Kishon Vijay Abraham I
2020-07-03 6:17 ` Kishon Vijay Abraham I
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