[PATCH 0/8 v4] PCI: Linux kernel SR-IOV support

[Yu Zhao]

Greetings,

Following patches are intended to support SR-IOV capability in the
Linux kernel. With these patches, people can turn a PCI device with
the capability into multiple ones from software perspective, which
will benefit KVM and achieve other purposes such as QoS, security,
and etc.

[PATCH 1/8 v4] PCI: define PCI resource names in a 'enum'
[PATCH 2/8 v4] PCI: export __pci_read_base
[PATCH 3/8 v4] PCI: export pci_alloc_child_bus
[PATCH 4/8 v4] PCI: add a wrapper for resource_alignment
[PATCH 5/8 v4] PCI: add a new function to map BAR offset
[PATCH 6/8 v4] PCI: support the SR-IOV capability
[PATCH 7/8 v4] PCI: reserve bus range for the SR-IOV device
[PATCH 8/8 v4] PCI: document the changes

---

 b/Documentation/DocBook/kernel-api.tmpl |    1 
 b/Documentation/PCI/pci-iov-howto.txt   |  223 ++++++++
 b/drivers/pci/Kconfig                   |   12 
 b/drivers/pci/Makefile                  |    2 
 b/drivers/pci/iov.c                     |  853 ++++++++++++++++++++++++++++++++
 b/drivers/pci/pci-sysfs.c               |    4 
 b/drivers/pci/pci.c                     |   19 
 b/drivers/pci/pci.h                     |    9 
 b/drivers/pci/probe.c                   |    2 
 b/drivers/pci/proc.c                    |    7 
 b/drivers/pci/setup-bus.c               |    4 
 b/drivers/pci/setup-res.c               |    8 
 b/include/linux/pci.h                   |   38 -
 b/include/linux/pci_regs.h              |   22 
 drivers/pci/iov.c                       |   24 
 drivers/pci/pci-sysfs.c                 |    4 
 drivers/pci/pci.c                       |   61 ++
 drivers/pci/pci.h                       |   65 ++
 drivers/pci/probe.c                     |   39 -
 drivers/pci/setup-res.c                 |   14 
 include/linux/pci.h                     |   57 ++
 21 files changed, 1397 insertions(+), 71 deletions(-)

---

Single Root I/O Virtualization (SR-IOV) capability defined by PCI-SIG
is intended to enable multiple system software to share PCI hardware
resources.  PCI device that supports this capability can be extended
to one Physical Functions plus multiple Virtual Functions. Physical
Function, which could be considered as the "real" PCI device, reflects
the hardware instance and manages all physical resources. Virtual
Functions are associated with a Physical Function and shares physical
resources with the Physical Function.Software can control allocation of
Virtual Functions via registers encapsulated in the capability structure.

SR-IOV specification can be found at
http://www.pcisig.com/members/downloads/specifications/iov/sr-iov1.0_11Sep07.pdf

Devices that support SR-IOV are available from following vendors:
http://download.intel.com/design/network/ProdBrf/320025.pdf
http://www.netxen.com/products/chipsolutions/NX3031.html
http://www.neterion.com/products/x3100.html
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