[dpdk-dev] [ [PATCH v2] 00/13] Add virtio support in arm/arm64

[Santosh Shukla]

This patch set add basic infrastrucure to run virtio-net-pci pmd driver for
arm64/arm. Tested on ThunderX platfrom. Verified for existing dpdk(s) test
applications like:
- ovs-dpdk-vhost-user: across the VM's, for the use-cases like guest2guest and
  Host2Guest
- testpmd application: Tested for max virtio-net-pci interface currently
  supported in kernel i.e. 31 interface.

Builds successfully for armv7/v8/thunderX and x86_64/i686 platforms. Made sure
that patch changes donot break for x86_64 case. Done similar tests for x86_64
too.

Patch History:
v2:
- Removed ifdef arm.. clutter from igb_uio / virtio_ethedev files
- Introduced rte_io.h header file in generic/ and arch specifics i.e.. for 
  armv7 --> rte_io_32.h, for armv8 --> rte_io_64.h.
- Removed RTE_ARCH_X86 ifdef clutter too and added rte_io.h header which nothing
  but wraps sys/io.h for x86_64 and i686
- Moved all the RTE_ARCH_ARM/64 dependancy for igb_uio case to separate header
  file named igbuio_ioport_misc.h. Now igb_uio.c will call only three function 
   - igbuio_iomap
   - igbuio_ioport_register
   - igbuio_ioport_unregister
- Moved ARM/64 specific definition to include/exec-env/rte_virt_ioport.h header
- Included virtio_ioport.c/h; has all private and public api required to map
  iopci bar for non-x86 arch. Tested on thunderX and x86_64 both.
  Private api includes:
  	- virtio_map_ioport
	- virtio_set_ioport_addr
  Public api includes:
  	- virtio_ioport_init
	- virtio_ioport_unmap

- Last patch is the miscllanious format specifier fix identifid for 64bit case
  during regression. 


v1:
- First patch adds RTE_VIRTIO_INC_VECTOR config, much needed for archs like
  arm/arm64 as they don't support vectored implementation, also wont able to
  build.
- Second patch is in-general fix for i686.
- Third patch is to emulate x86-style of {in,out}[b,w,l] api support for armv7/v8.
  As virtio-net-pci pmd driver uses those apis for port rd/wr {b,w,l}
- Fourth patch to enable VIRTIO_PMD feature in armv7/v8/thunderX config.
- Fifth patch to disable iopl syscall, As arm/arm64 linux kernel doesn't support
  them.
- Sixth patch introduces ioport memdevice called /dev/igb_ioport by which virtio
  pmd driver could able to rd/wr PCI_IOBAR.
  {applicable for arm/arm64 only, tested for arm64 as of now}


Santosh Shukla (13):
  virtio: Introduce config RTE_VIRTIO_INC_VECTOR
  config: i686: set RTE_VIRTIO_INC_VECTOR=n
  rte_io: armv7/v8: Introduce api to emulate x86-style of PCI/ISA
    ioport access
  virtio_pci: use rte_io.h for non-x86 arch
  virtio: change io_base datatype from uint32_t to uint64_type
  config: armv7/v8: Enable RTE_LIBRTE_VIRTIO_PMD
  linuxapp: eal: arm: Always return 0 for rte_eal_iopl_init()
  rte_io: x86: Remove sys/io.h ifdef x86 clutter
  igb_uio: ioport: map iopci region for armv7/v8
  include/exec-env: ioport: add rte_virt_ioport header file
  virtio_ioport: armv7/v8: mmap virtio iopci bar region
  virtio_ethdev: use virtio_ioport api at device init/close
  virtio_ethdev : fix format specifier error for 64bit addr case

 config/common_linuxapp                             |    1 +
 config/defconfig_arm-armv7a-linuxapp-gcc           |    6 +-
 config/defconfig_arm64-armv8a-linuxapp-gcc         |    6 +-
 config/defconfig_i686-native-linuxapp-gcc          |    1 +
 config/defconfig_i686-native-linuxapp-icc          |    1 +
 drivers/net/virtio/Makefile                        |    3 +-
 drivers/net/virtio/virtio_ethdev.c                 |   10 +-
 drivers/net/virtio/virtio_ioport.c                 |  163 ++++++++++++++++++++
 drivers/net/virtio/virtio_ioport.h                 |   42 +++++
 drivers/net/virtio/virtio_pci.h                    |    6 +-
 drivers/net/virtio/virtio_rxtx.c                   |    7 +
 lib/librte_eal/common/Makefile                     |    1 +
 lib/librte_eal/common/include/arch/arm/rte_io.h    |   60 +++++++
 lib/librte_eal/common/include/arch/arm/rte_io_32.h |  155 +++++++++++++++++++
 lib/librte_eal/common/include/arch/arm/rte_io_64.h |  155 +++++++++++++++++++
 lib/librte_eal/common/include/arch/x86/rte_io.h    |   42 +++++
 lib/librte_eal/common/include/generic/rte_io.h     |   81 ++++++++++
 lib/librte_eal/linuxapp/eal/Makefile               |    2 +-
 lib/librte_eal/linuxapp/eal/eal.c                  |    7 +-
 .../eal/include/exec-env/rte_virt_ioport.h         |   81 ++++++++++
 lib/librte_eal/linuxapp/igb_uio/igb_uio.c          |    8 +-
 .../linuxapp/igb_uio/igbuio_ioport_misc.h          |  133 ++++++++++++++++
 22 files changed, 957 insertions(+), 14 deletions(-)
 create mode 100644 drivers/net/virtio/virtio_ioport.c
 create mode 100644 drivers/net/virtio/virtio_ioport.h
 create mode 100644 lib/librte_eal/common/include/arch/arm/rte_io.h
 create mode 100644 lib/librte_eal/common/include/arch/arm/rte_io_32.h
 create mode 100644 lib/librte_eal/common/include/arch/arm/rte_io_64.h
 create mode 100644 lib/librte_eal/common/include/arch/x86/rte_io.h
 create mode 100644 lib/librte_eal/common/include/generic/rte_io.h
 create mode 100644 lib/librte_eal/linuxapp/eal/include/exec-env/rte_virt_ioport.h
 create mode 100644 lib/librte_eal/linuxapp/igb_uio/igbuio_ioport_misc.h

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1.7.9.5