Add sysfs ABI docs for driver entries bind, unbind and new_id. These entries are pretty old, from 2.6.0 onwards AFAIK, so this documents current behaviour. Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx> Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- v2 - add note re: older kernels and echo -n - add ack from gregkh Documentation/ABI/testing/sysfs-bus-pci | 43 ++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -1,3 +1,46 @@ +What: /sys/bus/pci/drivers/.../bind +Date: December 2003 +Contact: linux-pci@xxxxxxxxxxxxxxx +Description: + Writing a device location to this file will cause + the driver to attempt to bind to the device found at + this location. This is useful for overriding default + bindings. The format for the location is: DDDD:BB:DD.F. + That is Domain:Bus:Device.Function and is the same as + found in /sys/bus/pci/devices/. For example: + # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/bind + (Note: kernels before 2.6.28 may require echo -n). + +What: /sys/bus/pci/drivers/.../unbind +Date: December 2003 +Contact: linux-pci@xxxxxxxxxxxxxxx +Description: + Writing a device location to this file will cause the + driver to attempt to unbind from the device found at + this location. This may be useful when overriding default + bindings. The format for the location is: DDDD:BB:DD.F. + That is Domain:Bus:Device.Function and is the same as + found in /sys/bus/pci/devices/. For example: + # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/unbind + (Note: kernels before 2.6.28 may require echo -n). + +What: /sys/bus/pci/drivers/.../new_id +Date: December 2003 +Contact: linux-pci@xxxxxxxxxxxxxxx +Description: + Writing a device ID to this file will attempt to + dynamically add a new device ID to a PCI device driver. + This may allow the driver to support more hardware than + was included in the driver's static device ID support + table at compile time. The format for the device ID is: + VVVV DDDD SVVV SDDD CCCC MMMM PPPP. That is Vendor ID, + Device ID, Subsystem Vendor ID, Subsystem Device ID, + Class, Class Mask, and Private Driver Data. The Vendor ID + and Device ID fields are required, the rest are optional. + Upon successfully adding an ID, the driver will probe + for the device and attempt to bind to it. For example: + # echo "8086 10f5" > /sys/bus/pci/drivers/foo/new_id + What: /sys/bus/pci/devices/.../vpd Date: February 2008 Contact: Ben Hutchings <bhutchings@xxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
