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From: Tiwei Bie <tiwei.bie@intel.com>
To: dev@dpdk.org
Cc: cunming.liang@intel.com, bruce.richardson@intel.com,
	alejandro.lucero@netronome.com
Subject: [dpdk-dev] [RFC 0/3] Add mdev (Mediated device) support in DPDK
Date: Wed,  3 Apr 2019 15:18:41 +0800
Message-ID: <20190403071844.21126-1-tiwei.bie@intel.com> (raw)

Hi everyone,

This is a draft implementation of the mdev (Mediated device [1])
bus support in DPDK. Mdev is a way to virtualize devices in Linux
kernel. Based on the device-api (mdev_type/device_api), there could
be different types of mdev devices (e.g. vfio-pci). In this RFC,
one mdev bus is introduced to scan the mdev devices in the system
and do the probe based on the device-api.

Take the mdev devices whose device-api is "vfio-pci" as an example,
in this RFC, these devices will be probed by a mdev driver provided
by PCI bus, which will plug them to the PCI bus. And they will be
probed with the drivers registered on the PCI bus based on VendorID/
DeviceID/... then.

                     +----------+
                     | mdev bus |
                     +----+-----+
                          |
         +----------------+----+------+------+
         |                     |      |      |
   mdev_vfio_pci               ......
(device-api: vfio-pci)

There are also other ways to add mdev device support in DPDK (e.g.
let PCI bus scan /sys/bus/mdev/devices directly). Comments would be
appreciated!

[1] https://github.com/torvalds/linux/blob/master/Documentation/vfio-mediated-device.txt

Thanks,
Tiwei

Tiwei Bie (3):
  eal: add a helper for reading string from sysfs
  bus/mdev: add mdev bus support
  bus/pci: add mdev support

 config/common_base                        |   5 +
 config/common_linux                       |   1 +
 drivers/bus/Makefile                      |   1 +
 drivers/bus/mdev/Makefile                 |  41 +++
 drivers/bus/mdev/linux/Makefile           |   6 +
 drivers/bus/mdev/linux/mdev.c             | 117 ++++++++
 drivers/bus/mdev/mdev.c                   | 310 ++++++++++++++++++++++
 drivers/bus/mdev/meson.build              |  15 ++
 drivers/bus/mdev/private.h                |  90 +++++++
 drivers/bus/mdev/rte_bus_mdev.h           | 141 ++++++++++
 drivers/bus/mdev/rte_bus_mdev_version.map |  12 +
 drivers/bus/meson.build                   |   2 +-
 drivers/bus/pci/Makefile                  |   3 +
 drivers/bus/pci/linux/Makefile            |   4 +
 drivers/bus/pci/linux/pci_vfio.c          |  35 ++-
 drivers/bus/pci/linux/pci_vfio_mdev.c     | 305 +++++++++++++++++++++
 drivers/bus/pci/meson.build               |   4 +-
 drivers/bus/pci/pci_common.c              |  17 +-
 drivers/bus/pci/private.h                 |   9 +
 drivers/bus/pci/rte_bus_pci.h             |  11 +-
 lib/librte_eal/common/eal_filesystem.h    |   7 +
 lib/librte_eal/freebsd/eal/eal.c          |  22 ++
 lib/librte_eal/linux/eal/eal.c            |  22 ++
 lib/librte_eal/rte_eal_version.map        |   1 +
 mk/rte.app.mk                             |   1 +
 25 files changed, 1163 insertions(+), 19 deletions(-)
 create mode 100644 drivers/bus/mdev/Makefile
 create mode 100644 drivers/bus/mdev/linux/Makefile
 create mode 100644 drivers/bus/mdev/linux/mdev.c
 create mode 100644 drivers/bus/mdev/mdev.c
 create mode 100644 drivers/bus/mdev/meson.build
 create mode 100644 drivers/bus/mdev/private.h
 create mode 100644 drivers/bus/mdev/rte_bus_mdev.h
 create mode 100644 drivers/bus/mdev/rte_bus_mdev_version.map
 create mode 100644 drivers/bus/pci/linux/pci_vfio_mdev.c

-- 
2.17.1

From: Tiwei Bie <tiwei.bie@intel.com>
To: dev@dpdk.org
Cc: cunming.liang@intel.com, bruce.richardson@intel.com,
	alejandro.lucero@netronome.com
Subject: [dpdk-dev] [RFC 0/3] Add mdev (Mediated device) support in DPDK
Date: Wed,  3 Apr 2019 15:18:41 +0800
Message-ID: <20190403071844.21126-1-tiwei.bie@intel.com> (raw)
Message-ID: <20190403071841.YWn1WLUqShPRTRxmecrcLe41Af1IfiEnxQKTYbOs7-w@z> (raw)

Hi everyone,

This is a draft implementation of the mdev (Mediated device [1])
bus support in DPDK. Mdev is a way to virtualize devices in Linux
kernel. Based on the device-api (mdev_type/device_api), there could
be different types of mdev devices (e.g. vfio-pci). In this RFC,
one mdev bus is introduced to scan the mdev devices in the system
and do the probe based on the device-api.

Take the mdev devices whose device-api is "vfio-pci" as an example,
in this RFC, these devices will be probed by a mdev driver provided
by PCI bus, which will plug them to the PCI bus. And they will be
probed with the drivers registered on the PCI bus based on VendorID/
DeviceID/... then.

                     +----------+
                     | mdev bus |
                     +----+-----+
                          |
         +----------------+----+------+------+
         |                     |      |      |
   mdev_vfio_pci               ......
(device-api: vfio-pci)

There are also other ways to add mdev device support in DPDK (e.g.
let PCI bus scan /sys/bus/mdev/devices directly). Comments would be
appreciated!

[1] https://github.com/torvalds/linux/blob/master/Documentation/vfio-mediated-device.txt

Thanks,
Tiwei

Tiwei Bie (3):
  eal: add a helper for reading string from sysfs
  bus/mdev: add mdev bus support
  bus/pci: add mdev support

 config/common_base                        |   5 +
 config/common_linux                       |   1 +
 drivers/bus/Makefile                      |   1 +
 drivers/bus/mdev/Makefile                 |  41 +++
 drivers/bus/mdev/linux/Makefile           |   6 +
 drivers/bus/mdev/linux/mdev.c             | 117 ++++++++
 drivers/bus/mdev/mdev.c                   | 310 ++++++++++++++++++++++
 drivers/bus/mdev/meson.build              |  15 ++
 drivers/bus/mdev/private.h                |  90 +++++++
 drivers/bus/mdev/rte_bus_mdev.h           | 141 ++++++++++
 drivers/bus/mdev/rte_bus_mdev_version.map |  12 +
 drivers/bus/meson.build                   |   2 +-
 drivers/bus/pci/Makefile                  |   3 +
 drivers/bus/pci/linux/Makefile            |   4 +
 drivers/bus/pci/linux/pci_vfio.c          |  35 ++-
 drivers/bus/pci/linux/pci_vfio_mdev.c     | 305 +++++++++++++++++++++
 drivers/bus/pci/meson.build               |   4 +-
 drivers/bus/pci/pci_common.c              |  17 +-
 drivers/bus/pci/private.h                 |   9 +
 drivers/bus/pci/rte_bus_pci.h             |  11 +-
 lib/librte_eal/common/eal_filesystem.h    |   7 +
 lib/librte_eal/freebsd/eal/eal.c          |  22 ++
 lib/librte_eal/linux/eal/eal.c            |  22 ++
 lib/librte_eal/rte_eal_version.map        |   1 +
 mk/rte.app.mk                             |   1 +
 25 files changed, 1163 insertions(+), 19 deletions(-)
 create mode 100644 drivers/bus/mdev/Makefile
 create mode 100644 drivers/bus/mdev/linux/Makefile
 create mode 100644 drivers/bus/mdev/linux/mdev.c
 create mode 100644 drivers/bus/mdev/mdev.c
 create mode 100644 drivers/bus/mdev/meson.build
 create mode 100644 drivers/bus/mdev/private.h
 create mode 100644 drivers/bus/mdev/rte_bus_mdev.h
 create mode 100644 drivers/bus/mdev/rte_bus_mdev_version.map
 create mode 100644 drivers/bus/pci/linux/pci_vfio_mdev.c

-- 
2.17.1


             reply	other threads:[~2019-04-03  7:19 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-03  7:18 Tiwei Bie [this message]
2019-04-03  7:18 ` Tiwei Bie
2019-04-03  7:18 ` [dpdk-dev] [RFC 1/3] eal: add a helper for reading string from sysfs Tiwei Bie
2019-04-03  7:18   ` Tiwei Bie
2019-04-03  7:18 ` [dpdk-dev] [RFC 2/3] bus/mdev: add mdev bus support Tiwei Bie
2019-04-03  7:18   ` Tiwei Bie
2019-04-03  7:18 ` [dpdk-dev] [RFC 3/3] bus/pci: add mdev support Tiwei Bie
2019-04-03  7:18   ` Tiwei Bie
2019-04-03 14:13   ` Wiles, Keith
2019-04-03 14:13     ` Wiles, Keith
2019-04-04  4:19     ` Tiwei Bie
2019-04-04  4:19       ` Tiwei Bie
2019-04-08  8:44 ` [dpdk-dev] [RFC 0/3] Add mdev (Mediated device) support in DPDK Alejandro Lucero
2019-04-08  8:44   ` Alejandro Lucero
2019-04-08  9:36   ` Tiwei Bie
2019-04-08  9:36     ` Tiwei Bie
2019-04-10 10:02     ` Francois Ozog
2019-04-10 10:02       ` Francois Ozog
2019-07-15  7:52 ` [dpdk-dev] [RFC v2 0/5] " Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 1/5] bus/pci: introduce an internal representation of PCI device Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 2/5] bus/pci: avoid depending on private value in kernel source Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 3/5] bus/pci: introduce helper for MMIO read and write Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 4/5] eal: add a helper for reading string from sysfs Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 5/5] bus/pci: add mdev support Tiwei Bie
2021-06-01  3:06     ` [dpdk-dev] [RFC v3 0/6] Add mdev (Mediated device) support in DPDK Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 1/6] bus/pci: introduce an internal representation of PCI device Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 2/6] bus/pci: avoid depending on private value in kernel source Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 3/6] bus/pci: introduce helper for MMIO read and write Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 4/6] eal: add a helper for reading string from sysfs Chenbo Xia
2021-06-01  5:37         ` Stephen Hemminger
2021-06-08  5:47           ` Xia, Chenbo
2021-06-01  5:39         ` Stephen Hemminger
2021-06-08  5:48           ` Xia, Chenbo
2021-06-11  7:19         ` Thomas Monjalon
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 5/6] bus/pci: add mdev support Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 6/6] bus/pci: add sparse mmap support for mediated PCI devices Chenbo Xia
2021-06-11  7:15       ` [dpdk-dev] [RFC v3 0/6] Add mdev (Mediated device) support in DPDK Thomas Monjalon
2021-06-15  2:49         ` Xia, Chenbo
2021-06-15  7:48           ` Thomas Monjalon
2021-06-15 10:44             ` Xia, Chenbo
2021-06-15 11:57             ` Jason Gunthorpe

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