[PATCH v5 1/6] xen-pciback: Document the various parameters and attributes in SysFS

From: Konrad Rzeszutek Wilk
Date: Mon Jul 14 2014 - 12:19:17 EST

Which hadn't been done with the initial commit.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
v2: Dropped the parameters and one that is unlikeable.
Documentation/ABI/testing/sysfs-driver-pciback | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-driver-pciback

diff --git a/Documentation/ABI/testing/sysfs-driver-pciback b/Documentation/ABI/testing/sysfs-driver-pciback
new file mode 100644
index 0000000..cdc8340
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-pciback
@@ -0,0 +1,25 @@
+What: /sys/bus/pci/drivers/pciback/quirks
+Date: Oct 2011
+KernelVersion: 3.1
+Contact: xen-devel@xxxxxxxxxxxxxxxxxxxx
+ If the permissive attribute is set, then writing a string in
+ the format of DDDD:BB:DD.F-REG:SIZE:MASK will allow the guest
+ to write and read from the PCI device. That is Domain:Bus:
+ Device.Function-Register:Size:Mask (Domain is optional).
+ For example:
+ #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks
+ will allow the guest to read and write to the configuration
+ register 0x0E.
+What: /sys/bus/pci/drivers/pciback/irq_handlers
+Date: Oct 2011
+KernelVersion: 3.1
+Contact: xen-devel@xxxxxxxxxxxxxxxxxxxx
+ A list of all of the PCI devices owned by Xen PCI back and
+ whether Xen PCI backend will acknowledge the interrupts received
+ and the amount of interrupts received. Xen PCI back acknowledges
+ said interrupts only when they are level, shared with another
+ guest, and enabled by the guest.

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