[dpdk-dev] [PATCH v4 00/14] Add virtio support for arm/arm64

[Santosh Shukla <sshukla@mvista.com>]

Hi,

This v4 patch uses vfio-noiommu-way to access virtio-net pci interface.
Tested for arm64 thunderX platform. Patch builds for
x86/i386/arm/armv8/thunderX. Tested with testpmd application.

Refer v3 [1] cover letter for dependancy description:
Step to enable vfio-noiommu mode:
- modprobe vfio-pci
echo 1 > /sys/module/vfio/parameters/enable_unsafe_*
- then bind 
./tools/dpdk_nic_bind.py -b vfio-pci 0000:00:03.0

- Testpmd application to try out for:
./app/testpmd -c 0x3 -n 4 -- -i --portmask=0x0  --nb-cores=1 --port-topology=chained

On host side ping to tapX interface and observe pkt_cnt on guest side.

For patch history from v1-->v3 pl. refer v3 cover letter [1]

v3--> v4:
- Incorporated v3 review comments, Thanks to Stephen, Yuan, Bruce for comment!
- Tested for Huawei patch series titled "[PATCH v2 0/4] fix the issue that DPDK
  takes over virtio device blindly". 
- Patch no 11 and 13 are testonly patches used for this patch series [Anatoly/
  Yuan]

Major change in series:
- Introducing vfio interface parse api in virtio pmd driver
- Added vfio device specific private header in struct virtio_hw{}
- Dummy in/oub x86-style api, just to pass build error for non-x86 arch for vfio
  mode.
- VIRTIO_REG_RD/WR API(s) are now able to do rd/wr for both interfaces i.e. for
  vfio and igb_uio/ioport bar. Tested for both mode for x86 and also only for
  vfio for arm64 (non-x86) archs.

So to try-out complete patc-set w/o cut-n-paste pain clone this [2]

Thanks!.

[1] http://permalink.gmane.org/gmane.comp.networking.dpdk.devel/31117
[2] https://github.com/sshukla82/dpdk.git branch master-virtio-vfio-v4

Anatoly Burakov (1):
  vfio: Support for no-IOMMU mode

Santosh Shukla (12):
  virtio: Introduce config RTE_VIRTIO_INC_VECTOR
  config: i686: set RTE_VIRTIO_INC_VECTOR=n
  linuxapp: eal: arm: Always return 0 for rte_eal_iopl_init()
  linuxapp/vfio: ignore mapping for ioport region
  virtio_pci.h: build fix for sys/io.h for non-x86 arch
  eal: pci: vfio: add rd/wr func for pci bar space
  virtio: vfio: add api support to rd/wr ioport bar
  virtio: pci: extend virtio pci rw api for vfio interface
  virtio: ethdev: check for vfio interface
  virtio: pci: add dummy func definition for in/outb for non-x86 arch
  config: armv7/v8: Enable RTE_LIBRTE_VIRTIO_PMD
  virtio: enable vfio in pmd driver

Yuanhan Liu (1):
  eal: pci: export pci_[un]map_device

 config/common_linuxapp                          |    1 +
 config/defconfig_arm-armv7a-linuxapp-gcc        |    4 +-
 config/defconfig_arm64-armv8a-linuxapp-gcc      |    4 +-
 config/defconfig_i686-native-linuxapp-gcc       |    1 +
 config/defconfig_i686-native-linuxapp-icc       |    1 +
 drivers/net/virtio/Makefile                     |    2 +-
 drivers/net/virtio/virtio_ethdev.c              |  124 ++++++++++++++-
 drivers/net/virtio/virtio_pci.h                 |  128 +++++++++++++--
 drivers/net/virtio/virtio_rxtx.c                |    7 +
 drivers/net/virtio/virtio_vfio_rw.h             |  107 +++++++++++++
 lib/librte_eal/bsdapp/eal/eal_pci.c             |    4 +-
 lib/librte_eal/bsdapp/eal/rte_eal_version.map   |    7 +
 lib/librte_eal/common/eal_common_pci.c          |    4 +-
 lib/librte_eal/common/eal_private.h             |   18 ---
 lib/librte_eal/common/include/rte_pci.h         |   65 ++++++++
 lib/librte_eal/linuxapp/eal/Makefile            |    1 +
 lib/librte_eal/linuxapp/eal/eal.c               |    2 +
 lib/librte_eal/linuxapp/eal/eal_pci.c           |   41 ++++-
 lib/librte_eal/linuxapp/eal/eal_pci_init.h      |   28 ++++
 lib/librte_eal/linuxapp/eal/eal_pci_vfio.c      |  191 ++++++++++++++++-------
 lib/librte_eal/linuxapp/eal/eal_pci_vfio_dma.c  |   84 ++++++++++
 lib/librte_eal/linuxapp/eal/eal_vfio.h          |    5 +
 lib/librte_eal/linuxapp/eal/rte_eal_version.map |    7 +
 23 files changed, 740 insertions(+), 96 deletions(-)
 create mode 100644 drivers/net/virtio/virtio_vfio_rw.h
 create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio_dma.c

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1.7.9.5