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 =============== ====================================================== 34