Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/config/pcie-gadget
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:		Feb 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) KernelVersion:	2.6.37
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Contact:	Pratyush Anand <pratyush.anand@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 	Interface is used to configure selected dual mode PCIe controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	as device and then program its various registers to configure it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	as a particular device type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	This interfaces can be used to show spear's PCIe device capability.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	Nodes are only visible when configfs is mounted. To mount configfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	in /config directory use::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	  # mount -t configfs none /config/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	For nth PCIe Device Controller /config/pcie-gadget.n/:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	=============== ======================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	link		used to enable ltssm and read its status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	int_type	used to configure and read type of supported interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	no_of_msi	used to configure number of MSI vector needed and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 			to read no of MSI granted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	inta		write 1 to assert INTA and 0 to de-assert.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	send_msi	write MSI vector to be sent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	vendor_id	used to write and read vendor id (hex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	device_id	used to write and read device id (hex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	bar0_size	used to write and read bar0_size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	bar0_address	used to write and read bar0 mapped area in hex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	bar0_rw_offset	used to write and read offset of bar0 where bar0_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 			will be written or read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	bar0_data	used to write and read data at bar0_rw_offset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	=============== ======================================================