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 summary:
- 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}
On Sixth patch: There is other way to achieve desired by adding support in
linux kernel character memory driver such that user could do file rd/wr for
half-word/word size data. Currently character memory driver support byte rd/wr
via interface `/dev/port`. Such proposal already discussed long back at lkml
thread [2] but couldn;t got much atttaction though! I am going to send out
similar implementation as an RFC to dpdk-dev thread and to linux-kernel
community{todo}. However like to listen to current approach
review/comment/feedback.
Thanks in advance.
patchset developed on upstream dpdk commit 538020a then pulled jerin's
dependancy patches [1] on top.
[1] http://permalink.gmane.org/gmane.comp.networking.dpdk.devel/29068
[2] https://lkml.org/lkml/2014/5/10/189
Santosh Shukla (6):
virtio: Introduce config RTE_VIRTIO_INC_VECTOR
config: i686: set RTE_VIRTIO_INC_VECTOR=n
virtio: armv7/v8: Introdice api to emulate x86-style of PCI/ISA
ioport access
config: armv7/v8: Enable RTE_LIBRTE_VIRTIO_PMD
linuxapp: eal: arm: Always return 0 for rte_eal_iopl_init()
virtio: arm/arm64: memory mapped IO support in pmd driver
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 | 2 +-
drivers/net/virtio/virtio_ethdev.c | 138 ++++++++++++-
drivers/net/virtio/virtio_pci.h | 15 ++
drivers/net/virtio/virtio_rxtx.c | 7 +
.../common/include/arch/arm/rte_isa_io.h | 212 ++++++++++++++++++++
lib/librte_eal/linuxapp/eal/eal.c | 3 +
lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 80 +++++++-
12 files changed, 465 insertions(+), 7 deletions(-)
create mode 100644 lib/librte_eal/common/include/arch/arm/rte_isa_io.h
--
1.7.9.5
