On Tue, Jan 12, 2016 at 02:58:57PM +0800, Yuanhan Liu wrote:

v2: - fix a data corruption reported by Qian, due to hdr size mismatch.
      check detailes at ptach 5.

    - Add missing config_irq and isr reading support from v1.

    - fix comments from v1.

Almost all difference comes from virtio 1.0 are the PCI layout change:
the major configuration structures are stored at bar space, and their
location is stored at corresponding pci cap structure. Reading/parsing
them is one of the major work of patch 7.

To make handling virtio v1.0 and v0.95 co-exist well, this patch set
introduces a virtio_pci_ops structure, to add another layer so that
we could keep those vtpci_foo_bar "APIs". With that, we could do the
minimum change to add virtio 1.0 support.

Oops, I just found that I missed a simple test guide here, as promised
before. And here it is:

Firstly, you need get a virtio 1.0 supported QEMU (say, v2.5), then add
option "disable-modern=false" to qemu virtio-net-pci device to enable
virtio 1.0 (which is disabled by default).

And if you see something like following from 'lspci -v', it means virtio
1.0 is indeed enabled:

    00:04.0 Ethernet controller: Red Hat, Inc Virtio network device
    Subsystem: Red Hat, Inc Device 0001 
    Physical Slot: 4 
    Flags: bus master, fast devsel, latency 0, IRQ 11 
    I/O ports at c040 [size=64] 
    Memory at febf1000 (32-bit, non-prefetchable) [size=4K] 
    Memory at fe000000 (64-bit, prefetchable) [size=8M] 
    Expansion ROM at feb80000 [disabled] [size=256K] 
    Capabilities: [98] MSI-X: Enable+ Count=6 Masked- 
==> Capabilities: [84] Vendor Specific Information: Len=14 <?> 
==> Capabilities: [70] Vendor Specific Information: Len=14 <?> 
==> Capabilities: [60] Vendor Specific Information: Len=10 <?> 
==> Capabilities: [50] Vendor Specific Information: Len=10 <?> 
==> Capabilities: [40] Vendor Specific Information: Len=10 <?> 
    Kernel driver in use: virtio-pci 
    Kernel modules: virtio_pci

After that, there wasn't anything speical comparing to the old virtio
0.95 pmd driver.

	--yliu

---
Yuanhan Liu (7):
  virtio: don't set vring address again at queue startup
  virtio: introduce struct virtio_pci_ops
  virtio: move left pci stuff to virtio_pci.c
  viritio: switch to 64 bit features
  virtio: retrieve hdr_size from hw->vtnet_hdr_size
  eal: pci: export pci_map_device
  virtio: add 1.0 support

 doc/guides/rel_notes/release_2_3.rst            |   3 +
 drivers/net/virtio/virtio_ethdev.c              | 301 +---------
 drivers/net/virtio/virtio_ethdev.h              |   3 +-
 drivers/net/virtio/virtio_pci.c                 | 768 +++++++++++++++++++++++-
 drivers/net/virtio/virtio_pci.h                 | 102 +++-
 drivers/net/virtio/virtio_rxtx.c                |  21 +-
 drivers/net/virtio/virtqueue.h                  |   4 +-
 lib/librte_eal/bsdapp/eal/eal_pci.c             |   2 +-
 lib/librte_eal/bsdapp/eal/rte_eal_version.map   |   6 +
 lib/librte_eal/common/eal_common_pci.c          |   2 +-
 lib/librte_eal/common/eal_private.h             |  11 -
 lib/librte_eal/common/include/rte_pci.h         |  11 +
 lib/librte_eal/linuxapp/eal/eal_pci.c           |   2 +-
 lib/librte_eal/linuxapp/eal/rte_eal_version.map |   6 +
 14 files changed, 899 insertions(+), 343 deletions(-)

-- 
1.9.0