[PATCH 15/16 v6] PCI: document the SR-IOV sysfs entries

[Yu Zhao <yu.zhao@intel.com>]

Document the SR-IOV sysfs entries.

Cc: Alex Chiang <achiang@hp.com>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>

---
 Documentation/ABI/testing/sysfs-bus-pci |   33 +++++++++++++++++++++++++++++++
 1 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index ceddcff..41cce8f 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -9,3 +9,36 @@ Description:
 		that some devices may have malformatted data.  If the
 		underlying VPD has a writable section then the
 		corresponding section of this file will be writable.
+
+What:		/sys/bus/pci/devices/.../iov/enable
+Date:		October 2008
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This file appears when a device has the SR-IOV capability.
+		It holds the status of the capability, and could be written
+		(0/1) to disable and enable the capability if the PF driver
+		supports this operation.
+
+What:		/sys/bus/pci/devices/.../iov/initialvfs
+Date:		October 2008
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This file appears when a device has the SR-IOV capability.
+		It holds the number of initial Virtual Functions (read-only).
+
+What:		/sys/bus/pci/devices/.../iov/totalvfs
+Date:		October 2008
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This file appears when a device has the SR-IOV capability.
+		It holds the number of total Virtual Functions (read-only).
+
+
+What:		/sys/bus/pci/devices/.../iov/numvfs
+Date:		October 2008
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This file appears when a device has the SR-IOV capability.
+		It holds the number of available Virtual Functions, and
+		could be written (1 ~ InitialVFs) to change the number if
+		the PF driver supports this operation.
-- 
1.5.6.4