32 lines
1.2 KiB
Plaintext
32 lines
1.2 KiB
Plaintext
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.
|