0001 What: /config/pcie-gadget
0002 Date: Feb 2011
0003 KernelVersion: 2.6.37
0004 Contact: Pratyush Anand <pratyush.anand@gmail.com>
0005 Description:
0006
0007 Interface is used to configure selected dual mode PCIe controller
0008 as device and then program its various registers to configure it
0009 as a particular device type.
0010 This interfaces can be used to show spear's PCIe device capability.
0011
0012 Nodes are only visible when configfs is mounted. To mount configfs
0013 in /config directory use::
0014
0015 # mount -t configfs none /config/
0016
0017 For nth PCIe Device Controller /config/pcie-gadget.n/:
0018
0019 =============== ======================================================
0020 link used to enable ltssm and read its status.
0021 int_type used to configure and read type of supported interrupt
0022 no_of_msi used to configure number of MSI vector needed and
0023 to read no of MSI granted.
0024 inta write 1 to assert INTA and 0 to de-assert.
0025 send_msi write MSI vector to be sent.
0026 vendor_id used to write and read vendor id (hex)
0027 device_id used to write and read device id (hex)
0028 bar0_size used to write and read bar0_size
0029 bar0_address used to write and read bar0 mapped area in hex.
0030 bar0_rw_offset used to write and read offset of bar0 where bar0_data
0031 will be written or read.
0032 bar0_data used to write and read data at bar0_rw_offset.
0033 =============== ======================================================
