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[v9,6/7] PCI: document SR-IOV sysfs entries

Message ID 1234790920-1810-7-git-send-email-yu.zhao@intel.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Yu Zhao Feb. 16, 2009, 1:28 p.m. UTC 
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
---
 Documentation/ABI/testing/sysfs-bus-pci |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
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Patch

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index ceddcff..84dc100 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -9,3 +9,30 @@  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/.../virtfn/N
+Date:		February 2009
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This symbol link appears when hardware supports SR-IOV
+		capability and Physical Function driver has enabled it.
+		The symbol link points to the PCI device sysfs entry of
+		Virtual Function whose index is N (0...MaxVFs-1).
+
+What:		/sys/bus/pci/devices/.../virtfn/dep_link
+Date:		February 2009
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This symbol link appears when hardware supports SR-IOV
+		capability and Physical Function driver has enabled it,
+		and this device has vendor specific dependencies with
+		others. The symbol link points to the PCI device sysfs
+		entry of Physical Function this device depends on.
+
+What:		/sys/bus/pci/devices/.../physfn
+Date:		February 2009
+Contact:	Yu Zhao <yu.zhao@intel.com>
+Description:
+		This symbol link appears when a device is Virtual Function.
+		The symbol link points to the PCI device sysfs entry of
+		Physical Function this device associates with.