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What: /config/pcie-gadget
Date: Feb 2011
KernelVersion: 2.6.37
Contact: Pratyush Anand <pratyush.anand@gmail.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.
=============== ======================================================
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