On Mon, Sep 8, 2008 at 9:48 PM, Joseph Smith email@example.com wrote:
On Tue, 09 Sep 2008 03:31:00 +0200, Carl-Daniel Hailfinger firstname.lastname@example.org wrote:
I wanted to know which physical port of my multiple USB controllers have the debug capability. There was no way to find that easily, so I created a tool which will do most of the work for the user.
Example output: The following PCI devices support a USB debug port (says lspci): 0000:00:1d.7 The following PCI devices support a USB debug port (says the kernel): 0000:00:1d.7 PCI device 0000:00:1d.7, USB bus 3, USB physical port 1 Currently connected high-speed devices: /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M |__ Port 2: Dev 20, If 0, Class=stor., Driver=usb-storage, 480M
The output can be improved, but it's a good start.
Doesn't lspci -vvv tell you? It does for me on the ICH4
00:1d.7 USB Controller: Intel Corp. 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI]) Subsystem: Unknown device bc8a:4610 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0 Interrupt: pin D routed to IRQ 11 Region 0: Memory at feb7fc00 (32-bit, non-prefetchable) [size=1K] Capabilities:  Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities:  Debug port
But IIRC, only the first port on the controller works as a debug port, and Carl-Daniel's program will let you figure out exactly which port that is, by swapping a USB device between the two ports. Right?