Appears to be a way to address usb devices via EHCI (USB 2.0). This driver has only been seen in IOS58. The interface appears to resemble that of /dev/usb/oh0.
Devices
/dev/usb/ehc/0b95/7720
ASIX AX88772 USB2.0 to Fast Ethernet Adapter (referenced in IOS eth driver)
IPC request list
| number
|
name
|
Description
|
| 0x01
|
IOS_OPEN
|
Opens the device. Returns 0 if success. Returns 1 if device already open (not confirmed)
|
| 0x02
|
IOS_CLOSE
|
Closes the device. Returns 0 always.
|
| 0x03
|
IOS_READ
|
Does nothing. Returns -4.
|
| 0x04
|
IOS_WRITE
|
Does nothing. Returns -4.
|
| 0x05
|
IOS_IOCTL
|
Does nothing. Returns -4.
|
| 0x06
|
IOS_IOCTLV
|
Send an ioctl request.
|
IOS Ioctlv list
| number
|
name
|
in count
|
out count
|
vec entry target
|
vec entry size [bytes]
|
Description
|
| 0x00
|
?
|
0
|
0
|
?
|
?
|
Sets ioctlv.vector[0].addr to 0x20001 and returns 0 ??
|
| 0x01
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x02
|
?
|
0
|
0
|
?
|
?
|
Reads a stored IPC request. If not NULL, replies to it. If NULL, replies to the current request (always replies with zero). ??
|
| 0x03
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x04
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x05
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x06
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x10
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x11
|
?
|
0
|
0
|
?
|
?
|
?
|
| 0x13
|
?
|
0
|
0
|
?
|
?
|
?
|