Difference between revisions of "/dev/usb/ehc"
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| − | | style="vertical-align: top;" |? | + | | style="vertical-align: top;" |Reads a stored IPC request. If not NULL, replies to it. If NULL, replies to the current request (always replies with zero). ?? |
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Revision as of 20:04, 24 June 2010
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 | ? | ? | ? |