[dpdk-dev] [PATCH 0/4] rework ioport access for virtio

[David Marchand <david.marchand@6wind.com>]

Introduce a new ioport api in eal to mask all arch / kernel driver specifics.

- rte_eal_pci_ioport_map is responsible for initialising an rte_pci_ioport
  object that is used in subsequent calls, this function must be tweaked per
  architecture and per kernel driver, rte_ioport_t type is architecture
  specific and is used to hide those details to the application,
- rte_eal_pci_ioport_read / rte_eal_pci_ioport_write uses a rte_pci_ioport
  object to read / write those resources,
- rte_eal_pci_ioport_unmap releases resources used by a rte_pci_ioport
  object if necessary.

There is still some more work to ensure intr handle are properly initialized
and released when used in conjonction with rte_eal_map_device() api calls.

For now, only x86 uio / "none" is supported, rte_ioport x86 code has been
excessively simplified to only handle those cases at the moment.
Other archs might want to support both uio / vfio / xxx.

BSD code has been neither run nor compiled, please can someone confirm I did
not break too much stuff ?

virtio legacy code has been updated accordingly.
With this, virtio code should be ready for other archs now.

So in the end, all that is missing for ARM on linux is some vfio update and
implementation of rte_ioport stuff.


Regards, 
-- 
David Marchand

David Marchand (4):
  virtio/bsd: fix typo
  virtio: fix incorrect check when mapping pci resources
  eal: introduce ioport api
  virtio: use ioport api

 drivers/net/virtio/virtio_pci.c                    | 343 ++++-----------------
 drivers/net/virtio/virtio_pci.h                    |  38 +--
 lib/librte_eal/bsdapp/eal/eal_pci.c                |  76 +++++
 lib/librte_eal/bsdapp/eal/rte_eal_version.map      |   4 +
 .../common/include/arch/arm/rte_ioport.h           |  41 +++
 .../common/include/arch/ppc_64/rte_ioport.h        |  41 +++
 .../common/include/arch/tile/rte_ioport.h          |  41 +++
 .../common/include/arch/x86/rte_ioport.h           | 109 +++++++
 lib/librte_eal/common/include/rte_pci.h            |  68 ++++
 lib/librte_eal/linuxapp/eal/eal_pci.c              | 156 ++++++++++
 lib/librte_eal/linuxapp/eal/eal_pci_init.h         |   6 +
 lib/librte_eal/linuxapp/eal/eal_pci_uio.c          |  67 +++-
 lib/librte_eal/linuxapp/eal/eal_pci_vfio.c         |  17 +
 lib/librte_eal/linuxapp/eal/rte_eal_version.map    |   4 +
 14 files changed, 684 insertions(+), 327 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/arm/rte_ioport.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_ioport.h
 create mode 100644 lib/librte_eal/common/include/arch/tile/rte_ioport.h
 create mode 100644 lib/librte_eal/common/include/arch/x86/rte_ioport.h

-- 
1.9.1