From 3b4bd47f8f4ed3aaf7c81c9b5d2d37ad79fadf4a Mon Sep 17 00:00:00 2001 From: Fathi Boudra Date: Sun, 28 Apr 2013 09:33:08 +0300 Subject: Imported Upstream version 3.9.0 --- .../ABI/testing/configfs-spear-pcie-gadget | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/ABI/testing/configfs-spear-pcie-gadget (limited to 'Documentation/ABI/testing/configfs-spear-pcie-gadget') diff --git a/Documentation/ABI/testing/configfs-spear-pcie-gadget b/Documentation/ABI/testing/configfs-spear-pcie-gadget new file mode 100644 index 00000000..87598814 --- /dev/null +++ b/Documentation/ABI/testing/configfs-spear-pcie-gadget @@ -0,0 +1,31 @@ +What: /config/pcie-gadget +Date: Feb 2011 +KernelVersion: 2.6.37 +Contact: Pratyush Anand +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. -- cgit v1.2.3