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 # mount -t configfs none /config/ 15 16 For nth PCIe Device Controller 17 /config/pcie-gadget.n/ 18 link ... used to enable ltssm and read its status. 19 int_type ...used to configure and read type of supported 20 interrupt 21 no_of_msi ... used to configure number of MSI vector needed and 22 to read no of MSI granted. 23 inta ... write 1 to assert INTA and 0 to de-assert. 24 send_msi ... write MSI vector to be sent. 25 vendor_id ... used to write and read vendor id (hex) 26 device_id ... used to write and read device id (hex) 27 bar0_size ... used to write and read bar0_size 28 bar0_address ... used to write and read bar0 mapped area in hex. 29 bar0_rw_offset ... used to write and read offset of bar0 where 30 bar0_data will be written or read. 31 bar0_data ... used to write and read data at bar0_rw_offset. 32