configfs-spear-pcie-gadget

 1What:		/config/pcie-gadget
 2Date:		Feb 2011
 3KernelVersion:	2.6.37
 4Contact:	Pratyush Anand <pratyush.anand@gmail.com>
 5Description:
 6
 7	Interface is used to configure selected dual mode PCIe controller
 8	as device and then program its various registers to configure it
 9	as a particular device type.
10	This interfaces can be used to show spear's PCIe device capability.
11
12	Nodes are only visible when configfs is mounted. To mount configfs
13	in /config directory use::
14
15	  # mount -t configfs none /config/
16
17	For nth PCIe Device Controller /config/pcie-gadget.n/:
18
19	=============== ======================================================
20	link		used to enable ltssm and read its status.
21	int_type	used to configure and read type of supported interrupt
22	no_of_msi	used to configure number of MSI vector needed and
23			to read no of MSI granted.
24	inta		write 1 to assert INTA and 0 to de-assert.
25	send_msi	write MSI vector to be sent.
26	vendor_id	used to write and read vendor id (hex)
27	device_id	used to write and read device id (hex)
28	bar0_size	used to write and read bar0_size
29	bar0_address	used to write and read bar0 mapped area in hex.
30	bar0_rw_offset	used to write and read offset of bar0 where bar0_data
31			will be written or read.
32	bar0_data	used to write and read data at bar0_rw_offset.
33	=============== ======================================================