blob: 875988146a63cd8945d97e652b36919d7635bd1e [file] [log] [blame]
Pratyush Anandb9500542011-03-22 16:33:58 -07001What: /config/pcie-gadget
2Date: Feb 2011
3KernelVersion: 2.6.37
4Contact: Pratyush Anand <pratyush.anand@st.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.