[dpdk-dev] [PATCH v6 0/8] Add virtio support for arm/arm64

[Santosh Shukla]

Hi,

Patch series to allow access to virtio using vfio interface.
Tested for vfio-noiommu mode for x86_64/arm64{thunderX} platform.
patch series builds successfully for armv7/v8/x86_64/i686.

Patchset rebased on yuan's under review virtio-1.0 v2 patchset. Refer my public
branch [1]

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.

v5-->v6:
- Removed KDRV_NOIOMMU mode
- patchseries aligned in topic-wise ordered way
- Introduced virtio_io.h; has in/out api, and header file sys/io.h 
- Renamed virtio_vfio_rw.h to virtio_vfio_io.h, renamed ioport_in/out{b,w,l} to
  vfio_in/out{b,w,l}

v4 --> v5:
- Introducing RTE_KDRV_VFIO_NOIOMMU driver mode
- Incorporated v4 review comments, Pl. refer each patchset for review change.

For older version(v4.. v1) patch history, refer [2].

Thanks.
[1] https://github.com/sshukla82/dpdk.git branch virtio-vfio-v6-review
[2] http://comments.gmane.org/gmane.comp.networking.dpdk.devel/31402

Santosh Shukla (8):
  eal: pci: add api to rd/wr pci bar region
  linuxapp/vfio: ignore mapping for ioport region
  eal/linux: never check iopl for arm
  virtio: Introduce config RTE_VIRTIO_INC_VECTOR
  virtio: move io header and api from virtio_pci.h
  virtio: add vfio api to rd/wr ioport space
  virtio: extend pci rw api for vfio
  virtio: do not parse if interface is vfio

 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_io.h                  |  114 +++++++++++++++++++++++
 drivers/net/virtio/virtio_pci.c                 |  113 +++++++++++++++++++---
 drivers/net/virtio/virtio_pci.h                 |   30 ------
 drivers/net/virtio/virtio_rxtx.c                |   16 +++-
 drivers/net/virtio/virtio_rxtx.h                |    2 +
 drivers/net/virtio/virtio_vfio_io.h             |  104 +++++++++++++++++++++
 lib/librte_eal/bsdapp/eal/eal_pci.c             |   19 ++++
 lib/librte_eal/bsdapp/eal/rte_eal_version.map   |    3 +
 lib/librte_eal/common/include/rte_pci.h         |   38 ++++++++
 lib/librte_eal/linuxapp/eal/eal.c               |    2 +
 lib/librte_eal/linuxapp/eal/eal_pci.c           |   34 +++++++
 lib/librte_eal/linuxapp/eal/eal_pci_init.h      |    6 ++
 lib/librte_eal/linuxapp/eal/eal_pci_vfio.c      |   48 ++++++++++
 lib/librte_eal/linuxapp/eal/rte_eal_version.map |    3 +
 20 files changed, 498 insertions(+), 47 deletions(-)
 create mode 100644 drivers/net/virtio/virtio_io.h
 create mode 100644 drivers/net/virtio/virtio_vfio_io.h

-- 
1.7.9.5