PCI: export SMBIOS provided firmware instance and label to sysfs

This patch exports SMBIOS provided firmware instance and label of
onboard PCI devices to sysfs.  New files are:
  /sys/bus/pci/devices/.../label which contains the firmware name for
the device in question, and
  /sys/bus/pci/devices/.../index which contains the firmware device type
instance for the given device.

Signed-off-by: Jordan Hargrave <jordan_hargrave@dell.com>
Signed-off-by: Narendra K <narendra_k@dell.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 25be3250f7d6..f979d825d112 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -139,3 +139,30 @@ Contact:	linux-pci@vger.kernel.org
 Description:
                 This symbolic link points to the PCI hotplug controller driver
                 module that manages the hotplug slot.
+
+What:           /sys/bus/pci/devices/.../label
+Date:           July 2010
+Contact:        Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
+Description:
+                Reading this attribute will provide the firmware
+                given name(SMBIOS type 41 string) of the PCI device.
+                The attribute will be created only if the firmware
+                has given a name to the PCI device.
+Users:
+                Userspace applications interested in knowing the
+                firmware assigned name of the PCI device.
+
+What:           /sys/bus/pci/devices/.../index
+Date:           July 2010
+Contact:        Narendra K <narendra_k@dell.com>, linux-bugs@dell.com
+Description:
+                Reading this attribute will provide the firmware
+                given instance(SMBIOS type 41 device type instance)
+                of the PCI device. The attribute will be created
+                only if the firmware has given a device type instance
+                to the PCI device.
+Users:
+                Userspace applications interested in knowing the
+                firmware assigned device type instance of the PCI
+                device that can help in understanding the firmware
+                intended order of the PCI device.