tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
15 # mount -t configfs none /config/
16
17 For nth PCIe Device Controller /config/pcie-gadget.n/:
18
19 =============== ======================================================
20 link used to enable ltssm and read its status.
21 int_type used to configure and read type of supported interrupt
22 no_of_msi used to configure number of MSI vector needed and
23 to read no of MSI granted.
24 inta write 1 to assert INTA and 0 to de-assert.
25 send_msi write MSI vector to be sent.
26 vendor_id used to write and read vendor id (hex)
27 device_id used to write and read device id (hex)
28 bar0_size used to write and read bar0_size
29 bar0_address used to write and read bar0 mapped area in hex.
30 bar0_rw_offset used to write and read offset of bar0 where bar0_data
31 will be written or read.
32 bar0_data used to write and read data at bar0_rw_offset.
33 =============== ======================================================