What: /config/pcie-gadget Date: Feb 2011 KernelVersion: 2.6.37 Contact: Pratyush Anand <pratyush.anand@st.com> Description: Interface is used to configure selected dual mode PCIe controller as device and then program its various registers to configure it as a particular device type. This interfaces can be used to show spear's PCIe device capability. Nodes are only visible when configfs is mounted. To mount configfs in /config directory use: # mount -t configfs none /config/ For nth PCIe Device Controller /config/pcie-gadget.n/ link ... used to enable ltssm and read its status. int_type ...used to configure and read type of supported interrupt no_of_msi ... used to configure number of MSI vector needed and to read no of MSI granted. inta ... write 1 to assert INTA and 0 to de-assert. send_msi ... write MSI vector to be sent. vendor_id ... used to write and read vendor id (hex) device_id ... used to write and read device id (hex) bar0_size ... used to write and read bar0_size bar0_address ... used to write and read bar0 mapped area in hex. bar0_rw_offset ... used to write and read offset of bar0 where bar0_data will be written or read. bar0_data ... used to write and read data at bar0_rw_offset.